Search

CN-121993652-A - Water-saving valve capable of adjusting water outlet flow

CN121993652ACN 121993652 ACN121993652 ACN 121993652ACN-121993652-A

Abstract

The invention discloses a water-saving valve capable of adjusting water outlet flow, which relates to the technical field of water-saving valves and comprises a valve body, a throat part, a communication pipe, a liquid level response piece and a transmission assembly, wherein the throat part is arranged in a main flow channel of the valve body and is a flow section with the narrowest cross section in the main flow channel, the communication pipe is communicated with the radial side wall of the throat part in a penetrating way so as to enable the communication pipe to be communicated with the throat part in pressure, the liquid level response piece is arranged in the communication pipe and can move along the axial direction of the communication pipe to realize the adjustment of the hydraulic pressure of the throat part, and when the water-saving valve is used, the axial displacement of the liquid level response piece in the communication pipe is converted into the displacement of a movable plug in the throat part through the transmission assembly, so that the flow cross section of the throat part is changed, and the adjustment of the water outlet flow is realized. The pressure communication relation is established between the throat and the communicating pipe, so that the change of the throat pressure can cause the change of the liquid level in the communicating pipe, and the liquid level response piece and the transmission assembly drive the movable plug to change the flow cross section area of the throat, thereby forming the linkage adjustment based on the flow state.

Inventors

  • CHEN DAMING
  • Lei Shanxin
  • XU YONGLIANG
  • WANG HENG
  • DU DI
  • WU JIAFA

Assignees

  • 中山达鼎精密工业有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (10)

  1. 1. The water-saving valve capable of adjusting the water outlet flow comprises a valve body (1) and is characterized by also comprising a throat part (1.1), wherein the throat part is arranged in a main flow channel of the valve body (1) and is a circulation section with the narrowest cross section in the main flow channel; The communication pipe (1.2) is communicated with the radial side wall of the throat part (1.1) so that the communication pipe (1.2) is communicated with the throat part (1.1) in pressure; The liquid level response piece is arranged in the communication pipe (1.2) and can move along the axial direction of the communication pipe (1.2) to realize the adjustment of the hydraulic pressure of the throat part (1.1); a movable plug (1.10) slidably connected within the throat (1.1), the movable plug (1.10) being adapted to vary the cross-sectional area of the throat (1.1); the transmission assembly is arranged between the movable plug (1.10) and the liquid level response piece, and the movable plug (1.10) is connected with the liquid level response piece through the transmission assembly; When the device is used, the axial displacement of the liquid level response piece in the communication pipe (1.2) is converted into the displacement of the movable plug (1.10) in the throat part (1.1) through the transmission assembly, so that the flow cross section area of the throat part (1.1) is changed, and the regulation of the water outlet flow is realized.
  2. 2. A water saving valve according to claim 1, characterized in that the level responsive member comprises a pressure sealing plug (1.21) axially slidably connected in the communication tube (1.2), the pressure sealing plug (1.21) being connected to the communication tube (1.2) by means of a pressure spring (1.20).
  3. 3. A water-saving valve with adjustable water flow according to claim 1, characterized in that the cross-sectional area of the movable plug (1.10) is smaller than the narrowest cross-sectional area of the throat (1.1).
  4. 4. The water-saving valve with adjustable water outlet flow according to claim 2, wherein the valve body (1) is provided with a water outlet (1.02), and a pressure stabilizing cavity (1.11) is arranged between the throat part (1.1) and the water outlet (1.02).
  5. 5. The water-saving valve with adjustable water outlet flow according to claim 4, wherein the transmission assembly comprises a sealing transmission block (1.4) and a lever member which are slidably connected in the pressure stabilizing cavity (1.11), one end of the lever member is connected with the sealing transmission block (1.4), and the other end of the lever member is connected with the pressure sealing plug (1.21).
  6. 6. The water-saving valve with the adjustable water outlet flow according to claim 5, wherein the lever piece comprises a swinging rod (1.6) hinged on the valve body (1), one end of the swinging rod (1.6) is hinged with a first connecting rod (1.5), and one end, far away from the swinging rod (1.6), of the first connecting rod (1.5) is hinged with the sealing transmission block (1.4).
  7. 7. The water-saving valve with the adjustable water outlet flow according to claim 6, wherein a second connecting rod (1.7) is hinged to the other end of the swinging rod (1.6), and one end, far away from the swinging rod (1.6), of the second connecting rod (1.7) is hinged to the sealing plug.
  8. 8. The water-saving valve with adjustable water outlet flow according to claim 5, wherein the movable plug (1.10) is connected with the sealing transmission block (1.4) through a connecting piece, so that the radial sliding stroke of the sealing block in the pressure stabilizing cavity (1.11) drives the movable plug (1.10) to move in the throat part (1.1), and the flow cross section area of the throat part (1.1) is changed.
  9. 9. The water-saving valve with adjustable water outlet flow according to claim 8, wherein the connecting piece comprises a transmission pin (1.101) fixedly connected to the movable plug (1.10) and a transmission groove (1.40) formed on the sealing transmission block (1.4) and matched with the transmission pin (1.101), and the transmission pin (1.101) is positioned in the transmission groove (1.40).
  10. 10. The water-saving valve with adjustable water outlet flow according to claim 1, wherein the communicating pipe (1.2) is provided with a damping hole section, the damping hole section is used for limiting the speed of transmitting the pressure change of the throat part (1.1) into the communicating pipe (1.2) so as to inhibit the high-frequency reciprocating movement of the liquid level response piece, and the damping hole section is at least one of an orifice, a capillary channel or a labyrinth flow channel arranged on the inner wall of the communicating pipe (1.2).

Description

Water-saving valve capable of adjusting water outlet flow Technical Field The invention relates to the technical field of water-saving valves, in particular to a water-saving valve capable of adjusting water outlet flow. Background Water-saving valves are widely used to control the flow of water out to reduce the amount of water used and to increase the efficiency of water resource utilization. The existing water-saving valve generally adopts a fixed aperture throttling element, a rubber flow limiting piece, a needle valve structure or a simple mechanical regulating valve to limit water flow, and the basic principle is that the water yield in unit time is reduced by reducing the flow cross section area. Most of the prior art belongs to static throttling structures, and the throttling capacity and the water supply pressure of the static throttling structures are in direct coupling relation. When the water supply pressure changes, particularly under the condition of switching between water consumption peaks or different water supply areas, the water outlet flow can obviously fluctuate along with the pressure change, so that the water saving effect is unstable, and the constant or controllable water outlet flow is difficult to keep under different working conditions. To ameliorate the above problems, some of the prior art have introduced pressure compensating structures, such as regulating the flow of water through an elastic diaphragm, complex valve element assembly, or multi-stage throttling structure. Although the scheme can alleviate the influence of pressure fluctuation on flow to a certain extent, the structure is generally complex, in addition, the existing water-saving valve is mainly used for directly throttling control of a main flow channel, a real-time feedback mechanism for a flow state is lacked, and the throttling state cannot be adaptively adjusted according to actual flow conditions. Disclosure of Invention The invention aims to provide a water-saving valve capable of adjusting the water outlet flow so as to solve the defects in the prior art. In order to achieve the above object, the present invention provides the following technical solutions: the water-saving valve capable of regulating water outlet flow rate includes valve body, throat portion, internal flow channel and flow section with narrowest cross-sectional area; The communication pipe is communicated with the radial side wall of the throat part, so that the communication pipe is communicated with the throat part in pressure; the liquid level response piece is arranged in the communication pipe and can move along the axial direction of the communication pipe to realize the adjustment of the hydraulic pressure of the throat part; the movable plug is connected in the throat in a sliding way and is used for changing the flow cross-sectional area of the throat; The transmission assembly is arranged between the movable plug and the liquid level response piece, and the movable plug is connected with the liquid level response piece through the transmission assembly; When the device is used, the axial displacement of the liquid level response piece in the communication pipe is converted into the displacement of the movable plug in the throat part through the transmission assembly, so that the flow cross section area of the throat part is changed, and the regulation of the water outlet flow is realized. Preferably, the liquid level response piece comprises a pressure sealing plug which is axially and slidably connected with the communication pipe, and the pressure sealing plug is connected with the communication pipe through a pressure spring. Preferably, the cross-sectional area of the plug is less than the narrowest cross-sectional area of the throat. Preferably, a water outlet is arranged on the valve body, and a pressure stabilizing cavity is arranged between the throat part and the water outlet. Preferably, the transmission assembly comprises a sealing transmission block and a lever member which are slidably connected in the pressure stabilizing cavity, one end of the lever member is connected with the sealing transmission block, and the other end of the lever member is connected with the pressure sealing plug. Preferably, the lever member comprises a swing rod hinged on the valve body, one end of the swing rod is hinged with a first connecting rod, and one end of the first connecting rod, which is far away from the swing rod, is hinged with the sealing transmission block. Preferably, the other end of the swing rod is hinged with a second connecting rod, and one end, far away from the swing rod, of the second connecting rod is hinged with the sealing plug. Preferably, the movable plug is connected with the sealing transmission block through a connecting piece, so that the movable plug is driven to move in the throat part by the radial sliding stroke of the sealing block in the pressure stabilizing cavity, and the flow cross section area