Search

CN-224200908-U - Plug-in type hydraulic control check valve testing device

CN224200908UCN 224200908 UCN224200908 UCN 224200908UCN-224200908-U

Abstract

The utility model discloses a plug-in type hydraulic control check valve testing device, and relates to the technical field of hydraulic testing. The installation base is provided with an oil way block, a transparent plastic pipe, a pressure reducing valve, a flow regulating valve, a reversing valve, a manual stop valve and an overflow valve, the outer side of the oil way block is provided with a digital display pressure sensor I and a digital display pressure sensor II, the digital display pressure sensor I is communicated with the overflow valve, and the detection end of the digital display pressure sensor II is communicated with the pressure reducing valve. The pilot oil way pressure supply is realized through the connection of the oil port and the manual stop valve, the pressure maintaining oil way is controlled by the reversing valve through the oil port, the synchronous oil supply of the double oil ways is supported, the pressure is independently adjustable, meanwhile, the limitation of the existing test bench can be changed through the arrangement of the pressure reducing valve and the flow regulating valve, the switching of different pressures and flows is realized, and the performance detection of the special hydraulic control one-way valve is met. The first digital display pressure sensor monitors the pressure change of the oil port four in real time, and the second digital display pressure sensor tracks the outlet pressure of the pressure reducing valve.

Inventors

  • DAI WEIWEI
  • LIU CHUNJIU

Assignees

  • 上海普林斯机械制造有限公司

Dates

Publication Date
20260505
Application Date
20250611

Claims (5)

  1. 1. The plug-in type hydraulic control one-way valve testing device comprises a mounting base (1) and is characterized in that an oil way block (2), a transparent plastic pipe (11), a pressure reducing valve (3), a reversing valve (6), a manual stop valve (5) and an overflow valve (4) are arranged on the mounting base (1), a first mounting hole (17), a second mounting hole (18) and a third mounting hole (19) are formed in the mounting base (1), a fixing threaded hole (30) is formed in the outer side wall of the oil way block (2), the oil way block (2) is connected with a fixing block (10) through the fixing threaded hole (30), the fixing block (10) is fixed on the mounting base (1) through the first mounting hole (17), the transparent plastic pipe (11) is fixed on the mounting base (1), the transparent plastic pipe (11) is communicated with the second mounting hole (18), the pressure reducing valve (3) is fixed on the mounting base (1) through the third mounting hole (19), an oil return port (14) is formed in the overflow valve (4), the pressure reducing valve (3) is provided with a first oil inlet (8) and a second digital display pressure sensor (7) is arranged on the outer side of the valve (6), the first digital display pressure sensor (8) is connected with the overflow valve (4), the detection end of the second digital display pressure sensor (9) is communicated with the pressure reducing valve (3), and the pressure reducing valve (3) is communicated with the overflow valve (4).
  2. 2. The cartridge type hydraulic control one-way valve testing device according to claim 1, wherein the upper end of the oil circuit block (2) is provided with a testing valve mounting hole (20), the lower end of the testing valve mounting hole (20) is provided with a first stepped hole (23), the lower end of the first stepped hole (23) is provided with a second stepped hole (24), the lower end of the second stepped hole (24) is provided with a third stepped hole (25), the lower end of the third stepped hole (25) is provided with a fourth stepped hole (28), the side wall of the first stepped hole (23) is provided with an oil port I (21) and an oil port II (22), the side wall of the second stepped hole (24) is provided with an oil port II (29), the side wall of the fourth stepped hole (28) is provided with an oil port III (26) and an oil port IV (27), and the oil port III (26) and the oil port IV (27) are communicated.
  3. 3. The plug-in type hydraulic control one-way valve testing device according to claim 2, wherein the third oil port (26) is communicated with the first digital display pressure sensor (8), the fourth oil port (27) is communicated with the reversing valve (6), the first oil port (21) is communicated with the manual stop valve (5), and one end, far away from the first oil port (21), of the manual stop valve (5) is communicated with the pressure reducing valve.
  4. 4. The cartridge type hydraulic control one-way valve testing device according to claim 1, wherein the oil return port (14) is connected with a first connecting pipeline (12), one end, away from the oil return port (14), of the first connecting pipeline (12) is connected with the reversing valve (6), and the first connecting pipeline (12) is also communicated with the pressure reducing valve (3).
  5. 5. The plug-in type hydraulic control one-way valve testing device according to claim 1, wherein the pressure reducing valve (3) is a direct-acting pressure reducing valve, the overflow valve (4) is a direct-acting overflow valve, the flow regulating valve (7) is a needle valve type throttle valve, the manual stop valve (5) is a ball valve, and the reversing valve (6) is a two-position three-way ball valve type reversing valve.

Description

Plug-in type hydraulic control check valve testing device Technical Field The utility model relates to the technical field of hydraulic testing, in particular to a plug-in type hydraulic control check valve testing device. Background The common hydraulic one-way valve can only be opened in one direction, and the hydraulic one-way valve can be opened reversely after receiving the pilot control signal, so that the hydraulic oil is allowed to flow reversely, and the reverse passage can be closed quickly after the pilot control signal is cancelled. The hydraulic control one-way valve is widely applied to a hydraulic loop which needs an actuating mechanism to be locked or the load to be kept, and the threaded plug-in type hydraulic control one-way valve is easy to integrate and design due to compact structure, and is more widely used in the field of engineering machinery. However, if the sealing quality of the hydraulic control one-way valve is poor, the internal leakage quantity is out of tolerance, the locking function will fail, so that the actuating mechanism cannot be locked, such as the load of the oil cylinder slowly drops or the hydraulic motor slides down, and the like, and the production safety accident is easily caused. Therefore, such valves require full detection of performance during product production, mainly including opening pressure, dwell leak, pressure drop, and closing lag time after control signal cancellation. However, the existing threaded plug-in type hydraulic check valves are various, special testing devices are needed for the hydraulic check valves for special purposes, and the special hydraulic check valves have higher requirements in testing, such as a pilot oil port and a pressure maintaining oil port for supplying oil simultaneously in testing, different pressures and flows, pressure drop in real time and reverse circulation and leakage detection, and the existing hydraulic valve testing equipment cannot meet the requirements due to limited testing functions. Disclosure of utility model The utility model aims to provide a plug-in type hydraulic control check valve testing device, which solves the technical problems in the background technology. The technical scheme is that the cartridge type hydraulic control one-way valve testing device comprises a mounting base, wherein an oil way block, a transparent plastic pipe, a pressure reducing valve, a reversing valve, a manual stop valve and an overflow valve are arranged on the mounting base, a first mounting hole, a second mounting hole and a third mounting hole are formed in the mounting base, a fixing threaded hole is formed in the outer side wall of the oil way block, the oil way block is connected with a fixing block through the fixing threaded hole, the fixing block is fixed on the mounting base through the first mounting hole, the transparent plastic pipe is fixed on the mounting base, the transparent plastic pipe is communicated with the second mounting hole, the pressure reducing valve is fixed on the mounting base through the third mounting hole, an oil return port is formed in the overflow valve, an oil inlet is formed in the pressure reducing valve, a first digital display pressure sensor and a second digital display pressure sensor are arranged on the outer side of the oil way block, a flow regulating valve is connected to the first digital display pressure sensor, a second detection end of the digital display pressure sensor is communicated with the pressure reducing valve, and the pressure reducing valve is communicated with the overflow valve. Preferably, the test valve mounting hole has been seted up to the oil circuit piece upper end, test valve mounting hole lower extreme is provided with first shoulder hole, first shoulder hole lower extreme is provided with the second shoulder hole, second shoulder hole lower extreme is provided with the third shoulder hole, third shoulder hole lower extreme is provided with the fourth shoulder hole, oil port one and oil port two have been seted up on the first shoulder hole lateral wall, oil port five have been seted up on the second shoulder hole lateral wall, oil port three and oil port four have been seted up on the fourth shoulder hole lateral wall, oil port three and four intercommunication. Preferably, the third oil port is communicated with the first digital display pressure sensor, the fourth oil port is communicated with the reversing valve, the first oil port is communicated with the manual stop valve, and one end, far away from the first oil port, of the manual stop valve is communicated with the pressure reducing valve. Preferably, the oil return port is connected with a first connecting pipeline, one end, far away from the oil return port, of the first connecting pipeline is connected with the reversing valve, and the first connecting pipeline is also communicated with the pressure reducing valve. Preferably, the pressure reducing valve is a direct-acting pressure red