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CN-122014901-A - Valve device and gas system

CN122014901ACN 122014901 ACN122014901 ACN 122014901ACN-122014901-A

Abstract

The application provides a valve device and a gas system, wherein the valve device is favorable for realizing valve closing by quick cutting-off. The valve device comprises a valve body part, a valve rod part and a stop pin assembly, wherein the valve body part is provided with a matching wall, the valve rod part comprises a valve rod and a sealing part, the valve rod is provided with an abutting part, the stop pin assembly comprises a stop pin, the valve rod part is in a first working state, the sealing part is staggered with the matching wall in the axial direction, the valve rod part is in a second working state, the sealing part is in a first distance along the axial direction relative to the first working state, the sealing part is in a radial direction abutting with the matching wall to close the valve device, the abutting part abuts against the stop pin, the valve body part is in a third working state, the sealing part is in a second distance along the first direction relative to the second working state, the valve body part or the valve rod is provided with a reset surface, and in the third working state, the valve rod part can rotate to enable the abutting part to be in contact fit with the reset surface arranged on the valve body part or enable the stop pin to be in contact fit with the reset surface arranged on the valve rod, and the valve rod part moves to reset along the second direction.

Inventors

  • Request for anonymity
  • Request for anonymity
  • Request for anonymity

Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260512
Application Date
20251111
Priority Date
20241111

Claims (17)

  1. 1. A valve device, characterized by comprising a valve body part (20), a valve rod part (10) and a stop pin assembly (40), wherein the valve body part (20) is provided with a matching wall (20211), the valve rod part (10) comprises a valve rod (101) and a sealing part (102), the valve rod (101) is provided with an abutting part (103, 10111 a), the stop pin assembly (40) comprises a stop pin (401), and the stop pin assembly (40) is mounted on the valve body part (20); The valve device (100) is in a first working state, the sealing part (102) is staggered with the matching wall (20211) in the axial direction, and the valve device (100) is opened; The valve device (100) is in a second working state, the sealing part (102) moves along the axial direction relative to the first working state by a first distance, the moving direction is a first direction, the sealing part (102) is propped against the matching wall (20211) along the radial direction to close the valve device (100), the propping parts (103, 10111 a) are propped against the stop pin (401) along a second direction, and the first direction and the second direction are opposite; The valve device (100) is in a third working state, the sealing part (102) moves a second distance along a first direction relative to the second working state, and the abutting parts (103, 10111 a) and the stop pin (401) are staggered in the axial direction; The valve body part (20) or the valve rod (101) is provided with a reset surface, in the third working state, the valve rod part (10) can rotate, so that the abutting part (103) is in contact fit with a reset surface (231) arranged on the valve body part (20), or the stop pin (401) is in contact fit with a reset surface (10112) arranged on the valve rod (101), and the valve rod part (10) moves along the second direction to restore to the first working state.
  2. 2. A valve device according to claim 1, wherein the valve stem (101) is provided with the abutment portion (103), the abutment portion (103) being a stopper pin structure protruding in a radial direction of the valve stem (101), either one of the abutment portion (103) and the stopper pin (401) having a slope (4011 a) toward the other.
  3. 3. The valve device according to claim 2, wherein the reset surface (231) is provided on the valve body member (20), the valve device (100) further comprises a limiting portion (60), and the limiting portion (60) comprises a first guide surface (6012) and a second guide surface (6013); -the first guiding surface (6012) has a first end and a second end, in the second operating state the first end of the first guiding surface (6012) is closer to the valve stem part (10), the second guiding surface (6013) has a third end and a fourth end, in the second operating state the fourth end of the second guiding surface (6013) is closer to the valve stem part (10); The second end of the first guiding surface (6012) is connected with the third end of the second guiding surface (6013), a first slideway (100 a) is formed between the second guiding surface (6013) and the reset surface (231), a part of the abutting part (103) can be positioned in the first slideway (100 a), and the first slideway (100 a) gradually inclines towards the second direction from the third end to the fourth end.
  4. 4. A valve device according to claim 3, wherein the first guide surface (6012) is inclined gradually from the first end to the second end, the first slide (100 a) being inclined gradually towards the second direction.
  5. 5. A valve device according to claim 3, wherein the stop portion (60) further comprises a stop surface (6011), the first end of the first guide surface (6012) being connected to an end of the stop surface (6011) facing the first direction, the fourth end of the second guide surface (6013) being connected to an end of the stop surface (6011) facing the second direction; The limit surface (6011) extends along the axial direction, and in the second working state, one side of the abutting part (103) in the circumferential direction abuts against the limit surface (6011).
  6. 6. Valve device according to claim 5, wherein the inner wall of the valve body member (20) is provided with a first slide groove (23 b), a portion of the abutment portion (103) being inserted into the first slide groove (23 b), the abutment portion (103) being movable in the axial direction along the first slide groove (23 b); The first slide groove (23 b) has a first groove side wall (233), and in the second operating state, the other side of the abutting portion (103) in the circumferential direction abuts against the first groove side wall (233).
  7. 7. The valve device according to claim 5, wherein the limit part (60) comprises a limit base (602) and a limit boss (601) protruding from the limit base (602), the limit surface (6011), the first guide surface (6012) and the second guide surface (6013) being part of a peripheral wall of the limit boss (601); The valve body component (20) is provided with a mounting groove (23 c), and at least the limit base (602) of the limit part (60) is embedded in the mounting groove (23 c), or the limit part (60) and the valve body component (20) are integrally arranged.
  8. 8. The valve device according to claim 7, wherein the valve body member (20) includes a first valve body portion (201) and a second valve body portion (202), the first valve body portion (201) and the second valve body portion (202) are axially abutted, the first valve body portion (201) includes a first cavity (23 a), the second valve body portion (202) includes a second cavity (202 b), the valve cavity (20 a) of the valve body member (20) includes the first cavity (23 a) and the second cavity (202 b), the first cavity (23 a) and the second cavity (202 b) are axially abutted, and the mounting groove (23 c) is provided on an inner wall of the first valve body portion (201) corresponding to the first cavity (23 a).
  9. 9. The valve device according to claim 1, wherein a step surface facing the second direction is provided on an outer peripheral wall of the valve stem (101), the step surface being the abutting portion (10111 a), and wherein the outer peripheral wall of the valve stem (101) further has the reset surface (10112).
  10. 10. The valve device according to claim 9, wherein the reset surface (10112) has a fifth end and a sixth end, the sixth end being closer to the abutment (10111 a), the reset surface (10112) being gradually inclined in the first direction from the fifth end to the sixth end.
  11. 11. Valve device according to claim 10, wherein the outer circumferential wall of the valve stem (101) is further provided with a third guiding surface (10113), the third guiding surface (10113) being connected to the fifth end of the reset surface (10112), and wherein in the third operating state the blocking pin (401) is rotatable along the third guiding surface (10113) to the fifth end of the reset surface (10112).
  12. 12. The valve device according to claim 11, characterized in that the outer peripheral wall of the valve stem (101) is provided with a second sliding groove (1011 b 1), the abutment (10111 a) being provided to a bottom wall (10111) of the second sliding groove (1011 b 1), the groove peripheral wall of the second sliding groove (1011 b 1) comprising a third groove side wall (10115) and a fourth groove side wall (10118) extending in the axial direction and distributed in the circumferential direction opposite each other, the third groove side wall (10115) having a notch; in the second working state, one side of the blocking pin (401) in the circumferential direction is abutted against the third groove side wall (10115), and the other side is abutted against the fourth groove side wall (10118); In the third operating state, the blocking pin (401) can slide through the notch to contact the third guide surface (10113).
  13. 13. A valve device according to claim 12, wherein the outer peripheral wall of the valve stem (101) is provided with a reset groove (1011 b 2); The part of the groove peripheral wall of the reset groove (1011 b 2) is the reset surface (10112), the groove peripheral wall of the second sliding groove (1011 b 1) comprises a sliding groove lower peripheral wall (10116) facing the second direction, the sixth end of the reset surface (10112) is connected with the sliding groove lower peripheral wall (10116), the bottom wall of the reset groove (1011 b 2) is provided with a step surface to form the third guide surface (10113); In the first operating state, the stop pin (401) is in contact with the bottom wall of the second sliding groove (1011 b 1) along the radial direction and in contact with the lower peripheral wall (10116) of the sliding groove along the axial direction.
  14. 14. Valve device according to claim 13, wherein the bottom wall of the reset groove (1011 b 2) has a second slide (10 a), one end port of the second slide (10 a) being the notch, the second slide (10 a) having a slide upper peripheral wall (10114) and a slide lower peripheral wall which are relatively distributed, the slide lower peripheral wall being the third guide surface (10113).
  15. 15. The valve device according to any one of claims 1-14, wherein the stop pin assembly (40) further comprises a second elastic member (403) and a plug (402), the valve body member (20) has a mounting portion (22), the mounting portion (22) has a mounting hole, one end of the mounting hole communicates with the valve cavity (20 a) of the valve body member (20), the second elastic member (403) is located in the mounting hole, and the plug (402) seals the other end of the mounting hole.
  16. 16. A valve arrangement according to any one of claims 1-14, wherein the valve arrangement (100) comprises a first resilient member (50), the first resilient member (50) providing a resilient force in the second direction to the valve stem member (10).
  17. 17. A gas system, characterized by comprising a gas usage device and a main gas pipe (300), a bronchus (400), said main gas pipe (300) being provided with a valve arrangement (100) according to any one of claims 1-16, said main gas pipe (300) being provided with a control valve (600), said bronchus (400) being connected with said gas usage device, said gas usage device being provided with a control panel, said control valve (600) and said valve arrangement (100) being both provided in said control panel.

Description

Valve device and gas system The present application claims priority from the chinese patent office, application number 202411603553.6, chinese patent application entitled "a valve device and gas system" filed 11/2024/11, the entire contents of which are incorporated herein by reference. Technical Field The application relates to the technical field of valves, in particular to a valve device and a gas system. Background The gas system comprises a main gas circuit switch, a main gas pipe, branch gas pipes, a burner and a plug valve, wherein each branch gas pipe is connected with the main gas pipe through the plug valve, and the plug valve controls the on-off of the branch gas pipe and the main gas pipe. Each of the bronchi is provided with a corresponding burner for supplying gas to the burner. The gas system corresponds to equipment using gas, such as an oven, and the equipment is provided with a control panel for controlling a gas path, but the total gas path switch is often far away from the control panel or is arranged in a hidden way, so that once the plug valve fails, gas leakage or fire and other emergency conditions are generated, the plug valve cannot be cut off quickly. Disclosure of Invention The application aims to provide a valve device and a gas system, wherein the valve device is favorable for realizing valve closing by quick cutting-off. In order to solve the technical problems, the application provides a valve device, which comprises a valve body part, a valve rod part and a stop pin assembly, wherein the valve body part is provided with a matching wall, the valve rod part comprises a valve rod and a sealing part, the valve rod is provided with an abutting part, the stop pin assembly comprises a stop pin, and the stop pin assembly is arranged on the valve body part; The valve device is in a first working state, the sealing part is staggered with the matching wall in the axial direction, and the valve device is opened; the valve device is in a second working state, the sealing part moves a first distance along the axial direction relative to the first working state, the moving direction is a first direction, the sealing part is propped against the matching wall along the radial direction to close the valve device, the propping part is propped against the stop pin along a second direction, and the first direction is opposite to the second direction; The valve device is in a third working state, the sealing part moves a second distance along the first direction relative to the second working state, and the abutting part and the stop pin are staggered in the axial direction; The valve body part or the valve rod is provided with a reset surface, in the third working state, the valve rod part can rotate, so that the abutting part is in contact fit with the reset surface arranged on the valve body part, or the stop pin is in contact fit with the reset surface arranged on the valve rod, and the valve rod part moves along the second direction to restore to the first working state. The valve device in this application through setting up the portion of leaning on and backing pin, can make valve rod spare along axial displacement when needing the valve that closes to let the portion of leaning on cross backing pin back by backing pin spacing in the axial, make valve rod spare can keep the second operating condition at the valve that closes, as long as drive valve rod spare removal can realize closing valve operation promptly, the simple operation, when being applied to gas system for instance, can cut off the gas fast, improves the security. When the valve device needs to be re-opened, the valve rod part needs to be rotated for a certain angle, the valve rod part is in contact fit with the reset surface, and the valve rod part can return to the position of the first working state under the action of the reset surface. Drawings FIG. 1 is a schematic view of a valve device according to an embodiment of the present application; FIG. 2 is an axial cross-sectional view of the valve apparatus of FIG. 1; FIG. 3 is an axial cross-sectional view of the valve apparatus of FIG. 1 at another angle; FIG. 4 is a schematic view of the first valve body of FIG. 1; FIG. 5 is a schematic view of the first valve body of FIG. 4 in axial cross-section; FIG. 6 is a schematic view in axial cross-section of the first valve body of FIG. 4 from another perspective; FIG. 7 is a schematic view of the second valve body of FIG. 1; FIG. 8 is an axial cross-sectional view of the second valve body of FIG. 7; FIG. 9 is a schematic perspective view of the valve stem assembly of FIG. 1; FIG. 10 is a front view of the valve stem assembly of FIG. 9; FIG. 11 is a schematic perspective view of the latch of FIG. 3; FIG. 12 is a front view of the latch of FIG. 3; FIG. 13 is a left side view of FIG. 12; FIG. 14 is a schematic view of the valve stem assembly of FIG. 2 after a distance downward; FIG. 15 is a schematic view of the valve stem assembly