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CN-224229249-U - Valve core external valve seat internal guide structure adjusting valve

CN224229249UCN 224229249 UCN224229249 UCN 224229249UCN-224229249-U

Abstract

The utility model provides an internal guide structure regulating valve of an external valve seat of a valve core, which relates to the technical field of valve structures and comprises a valve body, a valve seat and a valve core, wherein the valve body comprises a valve cavity, the valve seat comprises a valve seat body and a guide shell connected above the valve seat body, the valve seat body is connected with the inner wall of the valve cavity, a plurality of orifice groups are uniformly arranged on the guide shell along the radial direction of the guide shell, each orifice group comprises two orifices which are symmetrical in the center, and the valve core is sleeved on the periphery of the guide shell and moves up and down along the guide shell so as to regulate the opening degree of each orifice. According to the utility model, the full stroke of the valve core is guided by the guide shell, the fluid can be decomposed into a series of jet flows through the plurality of orifice groups on the guide shell, the jet flows mutually collide in the central area of the guide shell, the mutual reaction force of the fluid is limited in the central area inside the valve seat, and the valve core can be effectively prevented from being unstable due to unbalanced impact force of the medium.

Inventors

  • CHEN YUAN
  • HU YANCHAO
  • GUO FENG
  • GUO JINGLIANG
  • HUANG SIYUN
  • SONG ZHANGQI
  • LUO YUWEI

Assignees

  • 北京星光沃特传动研究所

Dates

Publication Date
20260512
Application Date
20250512

Claims (10)

  1. 1. An external disk seat internal guide structure governing valve of case, its characterized in that includes: a valve body (1) comprising a valve chamber (11); The valve seat (2) comprises a valve seat body (21) and a guide shell (22) connected to the upper part of the valve seat body (21), the valve seat body (21) is connected to the inner wall of the valve cavity (11), the guide shell (22) is uniformly provided with a plurality of orifice groups (221) along the radial direction of the guide shell, and each orifice group (221) comprises two orifices (2211) which are symmetrical in center; the valve core (3) is sleeved on the periphery of the guide shell (22) and moves up and down along the guide shell (22) so as to adjust the opening of each throttle hole (2211).
  2. 2. The valve with the external valve seat inner guide structure according to claim 1, wherein the outer periphery of the valve seat body (21) is provided with a valve seat sealing surface (211) matched with the valve seat (3), the inner periphery of the bottom of the valve seat (3) is provided with a valve seat sealing surface (31) corresponding to the valve seat sealing surface (211), the valve seat sealing surface (211) is positioned below the throttle hole (2211), and the valve seat sealing surface (31) is matched with the valve seat sealing surface (211) to control the on-off of the valve body (1).
  3. 3. The valve with the external valve seat inner guide structure according to claim 1, wherein an annular groove (222) is formed in the periphery of the guide shell (22) above the orifice group (221), a sealing ring (4) is installed in the annular groove (222), and the outer side of the sealing ring (4) is connected with the valve core (3).
  4. 4. The valve with the external valve seat inner guide structure according to claim 1, further comprising a valve rod (5) connected to the top of the valve core (3), wherein a mounting hole (32) for mounting the valve rod (5) is further formed in the top of the valve core (3), and a positioning part for positioning the valve rod (5) is arranged between the mounting hole (32) and the valve rod (5).
  5. 5. The valve with the external valve seat inner guide structure according to claim 4, wherein the mounting hole (32) comprises a cylindrical hole section (321) and a conical hole section (322) positioned above the cylindrical hole, the positioning part is formed by the inner wall of the conical hole section (322), the valve rod (5) comprises a first rod section (51) connected with the cylindrical hole section (321) and a second rod section (52) connected with the conical hole section (322), the lower end of the second rod section (52) is inserted into the conical hole section (322), a positioning surface (521) corresponding to the inner wall of the conical hole section (322) is arranged at the lower end of the second rod section (52), and the inner wall of the conical hole section (322) and the positioning surface (521) jointly form the positioning part.
  6. 6. The valve with the external valve core and the internal valve seat guiding structure according to claim 4, characterized by further comprising: A sleeve (6) sleeved on the periphery of the guide shell (22), the bottom of the sleeve is abutted against the periphery of the top of the valve seat body (21), and a plurality of through holes (61) are formed in the sleeve; A valve cover (7) connected to the top of the valve body (1) and the sleeve (6); The actuating mechanism (8) is connected to one side, far away from the valve core (3), of the valve rod (5) and is used for driving the valve rod (5) and the valve core (3) to conduct lifting movement.
  7. 7. The valve with the external valve seat inner guide structure according to claim 1, wherein a plurality of balance holes (33) which are uniformly distributed are formed in the top of the valve core (3), and the balance holes (33) are communicated with the inner cavity of the valve core (3) and the valve cavity (11).
  8. 8. The valve according to claim 1, wherein the valve element (3) and the valve seat (2) are made of the same material and have the same mass.
  9. 9. The valve according to claim 1, wherein the orifice (2211) includes: A first hole section (22111) whose projection on the axial direction of the guide housing (22) is V-shaped or trapezoidal, the flow passage area of the first hole section (22111) gradually increases from bottom to top; And a second hole section (22112) connected above the first hole section (22111), wherein the projection of the second hole section (22112) on the axial direction of the guide shell (22) is rectangular.
  10. 10. The valve with the internal guide structure of the external valve seat of the valve core according to claim 1, further comprising a water inlet cavity (12) and a water outlet cavity (13) which are communicated with the valve cavity (11), wherein the central line of the water inlet end of the water inlet cavity (12) and the central line of the water outlet end of the water outlet cavity (13) are collinear.

Description

Valve core external valve seat internal guide structure adjusting valve Technical Field The utility model relates to the technical field of valve structures, in particular to an adjusting valve with an external valve core and an internal guide structure of a valve seat. Background Conventional straight travel control valves are generally classified into single seat control valves and sleeve control valves. The structure of the practical valve design manual (4 th edition) and other valve materials published is consistent with that of a straight travel regulating valve in the market, and the practical valve design manual mainly comprises a valve body, a valve seat, a valve core (valve plug), a pressing cage (sleeve), a valve rod and a valve cover, wherein the valve rod drives the valve core to be far away from or close to the valve seat so as to realize the opening and closing of the regulating valve and the regulation of the flow. However, the existing valve core (valve plug) is subjected to unbalanced impact force of medium, so that the valve core (valve plug) rotates in the valve body, and the valve regulation is disabled or damaged. Disclosure of utility model In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme: According to an aspect of the present utility model, there is provided an external-spool valve seat internal-guide-structure regulating valve including: A valve body including a valve cavity; The valve seat comprises a valve seat body and a guide shell connected above the valve seat body, the valve seat body is connected to the inner wall of the valve cavity, a plurality of orifice groups are uniformly formed in the guide shell along the radial direction of the guide shell, and each orifice group comprises two orifices with central symmetry; The valve core is sleeved on the periphery of the guide shell and moves up and down along the guide shell so as to adjust the opening degree of each throttling hole. According to one embodiment of the utility model, a valve seat sealing surface matched with the valve core is arranged on the outer periphery of the valve seat body, a valve core sealing surface corresponding to the valve seat sealing surface is arranged on the inner periphery of the bottom of the valve core, the valve seat sealing surface is positioned below the throttling hole, and the valve core sealing surface is matched with the valve seat sealing surface to control the on-off of the valve body. According to one embodiment of the utility model, an annular groove is formed in the periphery of the guide shell above the orifice group, a sealing ring is installed in the annular groove, and the outer side of the sealing ring is connected to the valve core. According to one embodiment of the utility model, the valve further comprises a valve rod connected to the top of the valve core, the top of the valve core is further provided with a mounting hole for mounting the valve rod, and a positioning part for positioning the valve rod is arranged between the mounting hole and the valve rod. According to one embodiment of the utility model, the mounting hole comprises a cylindrical hole section and a conical hole section positioned above the cylindrical hole, the inner wall of the conical hole section forms the positioning part, the valve rod comprises a first rod section connected with the cylindrical hole section and a second rod section connected with the conical hole section, the lower end of the second rod section is inserted into the conical hole section, wherein a positioning surface corresponding to the inner wall of the conical hole section is arranged at the lower end of the second rod section, and the inner wall of the conical hole section and the positioning surface jointly form the positioning part. According to an embodiment of the utility model, the valve body external valve seat internal guiding structure adjusting valve further comprises: The sleeve is sleeved on the periphery of the guide shell, the bottom of the sleeve is abutted against the periphery of the top of the valve seat body, and a plurality of through holes are formed in the sleeve; And the valve cover is connected to the valve body and the top of the sleeve. And the actuating mechanism is connected to one side of the valve rod, which is far away from the valve core, and is used for driving the valve rod and the valve core to perform lifting movement. According to one embodiment of the utility model, a plurality of evenly distributed balance holes are formed in the top of the valve core, and the balance holes are communicated with the inner cavity of the valve core and the valve cavity. According to an embodiment of the utility model, the valve element and the valve seat are of the same material and of comparable mass. According to an embodiment of the utility model, wherein the orifice includes: The projection of the first hole section on the axial direction of t