Manual pressure relief structure of neutral-position non-return superposition module

Abstract

The utility model discloses a manual pressure relief structure of a meso-position non-return superposition module, which comprises a superposition block, an upper accommodating cavity is arranged in the superposition block, the lower end of the upper accommodating cavity is provided with two isolated lower accommodating cavities, one of the lower accommodating cavities is communicated with a front cavity of a driving execution piece, the other lower accommodating cavity is communicated with a rear cavity of the driving execution piece, and the lower accommodating cavity is communicated with the rear cavity of the driving execution piece. A valve seat is fixedly installed in the upper containing cavity, discharging holes in one-to-one correspondence with the lower containing cavities are formed in the valve seat, one-way plug assemblies are arranged in the two lower containing cavities respectively and used for blocking the corresponding discharging holes, and an operation rod used for driving the two one-way plug assemblies to move downwards is arranged in the upper containing cavity. The first elastic piece is arranged between the operating rod and the valve seat in an abutting mode, a user can move the operating rod downwards according to the trend so that the pressure discharging function can be achieved, meanwhile, due to the arrangement of the one-way plug assembly, the discharging hole is sealed in the normal state, and then normal work of the driving execution piece can be prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of valve islands, in particular to a manual pressure relief structure of a mid-position non-return stacking module. Background Art

[0002] The existing valve island includes a manifold and several solenoid valves integrated on the upper end of the manifold. The valve island is used for multi-way pipeline control. The solenoid valves are usually divided into single-control or double-control. In certain specific occasions, it is necessary to drive the actuator (such as a cylinder) to stay in the middle position for a long time. At this time, it is necessary to use a three-position five-way solenoid valve with double control. Since the actuator needs to stay in the middle position for a long time, after the solenoid valve coil is powered off, the air pressure in the front and rear chambers of the actuator will remain in a balanced state. When the actuator completes the work, the operator can manually discharge the pressure. Therefore, how to discharge the front and rear chambers of the actuator without affecting the normal operation of the actuator is a technical problem that needs to be solved at present. Summary of the invention

[0003] The purpose of the utility model is to provide a manual pressure relief structure of a mid-position check stacking module, in which the user can realize the pressure relief function by moving the trend operating lever downward. At the same time, due to the setting of the one-way plug assembly, the discharge hole is sealed under normal circumstances, thereby avoiding affecting the normal operation of the driving actuator.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a manual pressure relief structure of a mid-position check stacking module, including a stacking block, an upper accommodating chamber is provided in the stacking block, and two isolated lower accommodating chambers are provided at the lower end of the upper accommodating chamber, one of the lower accommodating chambers is connected to the front chamber of the driving actuator, and the other lower accommodating chamber is connected to the rear chamber of the driving actuator, a valve seat is fixedly installed in the upper accommodating chamber, and the valve seat is provided with discharge holes corresponding to the lower accommodating chambers one by one, and one-way plug assemblies are respectively provided in the two lower accommodating chambers, and the one-way plug assemblies are used to block the corresponding discharge holes, and an operating rod for independently driving each one-way plug assembly or simultaneously driving the two one-way plug assemblies to move downward is provided in the upper accommodating chamber, and a first elastic member is abutted against the operating rod and the valve seat, and when the discharge hole is connected, the fluid medium is discharged to the outside from the lower accommodating chamber, the discharge hole and the upper accommodating chamber.

[0005] Furthermore, a downward pressure column corresponding to the discharge hole is provided at the lower part of the operating rod, and a discharge gap is left between the downward pressure column and the discharge hole. By driving the operating rod downward, the two downward pressure columns simultaneously push open the two one-way plug assemblies, thereby opening the two discharge holes at the same time.

[0006] Furthermore, the operating rod includes a split upper operating block and a lower pressing piece, the lower pressing column is formed at the lower end of the lower pressing piece, and the manual pressure relief structure is provided with a locking structure. After the upper operating block is pressed down, it can be locked in the pressed position by the locking structure.

[0007] Furthermore, the locking structure includes a locking groove arranged on the upper operating block and a locking block fixedly arranged on the superimposed block. The upper operating block is provided with a vertically arranged slide groove, and the locking groove is arranged at the top side end of the slide groove. Pressing the upper operating block downward can drive the lower pressing column to move downward to push open the one-way plug assembly. At this time, the upper operating block is screwed, and the locking block can be inserted into the locking groove and locked with the locking groove.

[0008] Furthermore, an operating portion for easy twisting is provided on the top of the upper operating block.

[0009] Furthermore, a receiving groove is provided in the valve seat, and the upper operating block is slidably matched with a groove wall of the receiving groove.

[0010] Furthermore, the lower portion of the valve seat is provided with a lower boss corresponding to the lower accommodating cavity one by one, the lower boss is inserted into the lower accommodating cavity, the outer periphery of the lower boss is provided with an annular groove, and a sealing ring is embedded in the annular groove to abut against the groove wall of the lower accommodating cavity.

[0011] Furthermore, the valve seat and / or the operating rod are provided with a guide column for guiding the first elastic member.

[0012] Furthermore, the one-way plug assembly includes a plug for plugging the discharge hole and a second elastic member disposed against the plug and the inner end surface of the lower accommodating cavity. The plug has a tendency to plug the discharge hole under the action of the second elastic member.

[0013] In summary, the utility model has the following beneficial effects:

[0014] The manual pressure relief structure of the utility model allows the user to achieve the pressure relief function by moving the trend operating lever downward. At the same time, due to the provision of the one-way plug assembly, the discharge hole is sealed under normal circumstances, thereby avoiding affecting the normal operation of the driving actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model from a first viewing angle.

[0016] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle.

[0017] Figure 3 It is a structural schematic diagram of an upper operating block and a lower pressing piece of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the superposition block of the utility model.

[0019] Figure 5 It is a schematic diagram of the gas path structure inside the stacking block of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the utility model when the stacking block is installed on the valve island.

[0021] In the figure: 10, stacking block; 11, stacking block A; 111, air inlet channel P; 112, air outlet channel A; 113, air outlet channel B; 114, exhaust channel R; 115, exhaust channel S; 116, first flow channel; 1161, upper first flow channel; 1162, lower first flow channel; 117, second flow channel; 1171, upper second flow channel; 1172, lower second flow channel; 12, stacking block B; 121, upper accommodating chamber; 122, lower accommodating chamber; 123, chamber A; 124, valve chamber; 125, chamber B; 126, left valve port; 1 27. Right valve port; 13. Valve core; 131. Elastic member A; 14. One-way valve assembly; 141. Sealing block; 142. Spring; 20. Valve seat; 21. Discharge hole; 22. Lower boss; 23. Sealing ring; 30. One-way plug assembly; 31. Plug; 32. Second elastic member; 40. Operating rod; 41. Upper operating block; 411. Locking groove; 412. Slide groove; 42. Pressing member; 421. Pressing column; 422. Discharge gap; 423. Guide column; 43. First elastic member; 50. Locking block; 60. Solenoid valve; 70. Manifold. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-6 As shown, a manual pressure relief structure of a neutral check stacking module includes a stacking block 10, an upper accommodating chamber 121 is provided in the stacking block 10, and two lower accommodating chambers 122 are provided at the lower end of the upper accommodating chamber 121, one of the lower accommodating chambers 122 is connected to the front chamber of the driving actuator, and the other lower accommodating chamber 122 is connected to the rear chamber of the driving actuator, a valve seat 20 is fixedly installed in the upper accommodating chamber 121, and a discharge hole 2 corresponding to the lower accommodating chamber 122 is provided in the valve seat 20 1, one-way plug assemblies 30 are respectively provided in the two lower accommodating chambers 122, and the one-way plug assemblies 30 are used to block the corresponding discharge holes 21. An operating rod 40 is provided in the upper accommodating chamber 121 for independently driving each one-way plug assembly 30 or driving the two one-way plug assemblies 30 to move downward simultaneously. A first elastic member 43 is abutted between the operating rod 40 and the valve seat 20. When the discharge hole 21 is connected, the fluid medium is discharged from the lower accommodating chamber 122, the discharge hole 21 and the upper accommodating chamber 121 to the outside.

[0024] like Figure 4-5As shown, the mid-position check stacking module of the present invention is arranged between the manifold 70 of the valve island and the single solenoid valve 60, and is used to control the airflow through the mid-position check stacking module. The mid-position check stacking module includes a stacking block 10A and a stacking block 10B. The manual pressure relief structure of the present invention is arranged on the stacking block 10B. The stacking block 10A is provided with an isolated air inlet channel P111, an air outlet channel A112, an air outlet channel B113, an exhaust channel R114 and an exhaust channel S115, wherein the air inlet channel P111 is opposite to the air inlet hole P of the solenoid valve 60. The outlet channel A112 corresponds to the outlet hole A of the solenoid valve 60, the outlet channel B113 corresponds to the outlet hole B of the solenoid valve 60, the exhaust channel R114 corresponds to the exhaust hole R of the solenoid valve 60, the exhaust channel S115 corresponds to the exhaust hole S of the solenoid valve 60, the manifold 70 is provided with a working port A and a working port B corresponding to the outlet channel A112 and the outlet channel B113, the working port A and the working port B are used to connect the front and rear cavities of the driving actuator, the outlet channel A112 and the outlet channel B113 are sealed and separated into two upper and lower chambers, and the stacked The block 10B is provided with a chamber A123, a valve chamber 124 and a chamber B125 which are arranged in sequence. A valve core 13 is slidably arranged in the valve chamber 124. Elastic members A131 for driving the valve core 13 to reset are arranged on both sides of the valve chamber 124. A sealing ring for sealing and separating the valve chamber 124 into left and right valve chambers 124 is arranged on the outer periphery of the valve core 13. Both the chamber A123 and the chamber B125 are provided with a one-way valve assembly 14. Both ends of the valve core 13 are respectively abutted against the one-way valve assemblies 14 on both sides. The stacked block 10 is provided with a first flow channel 116 and a connecting valve 117 for connecting the two chambers of the air outlet channel A112. The second flow channel 117 of the two chambers of the air outlet channel B113, the one-way valve assembly 14 on the left is used to isolate the first flow channel 116, and the one-way valve assembly 14 on the right is used to isolate the second flow channel 117. The one-way valve assembly 14 can be pushed open by the medium pressure or the valve core 13 to connect the corresponding flow channels. Specifically, in the utility model, one of the upper accommodating chambers 121 is used to connect the first flow channel 116, and the other upper accommodating chamber 121 is used to connect the second flow channel 117. The air outlet channel A112 and the air outlet channel B113 are used to communicate with the front and rear of the actuator.

[0025] Further, the first flow channel 116 includes an upper first flow channel 1161 connecting the upper chamber of the air outlet channel A112 and the left valve chamber 124, and a lower first flow channel 1162 connecting the chamber A123 and the lower chamber of the air outlet channel A112. The left chamber is connected to the chamber A123 through the left valve port 126. The second flow channel 117 includes an upper second flow channel 1171 connecting the upper chamber of the air outlet channel B113 and the right valve chamber 124, and a lower second flow channel 1172 connecting the chamber B125 and the lower chamber of the air outlet channel B113. The right chamber is connected to the chamber B125 through the right valve port 127. The one-way valve assemblies 14 on both sides are used to block the corresponding valve ports. Specifically, the one-way valve assembly 14 includes a sealing block 141 abutting against the valve core 13 and a spring 142 abutting against the sealing block 141. The sealing block 141 has a tendency to block the corresponding valve port under the action of the spring 142.

[0026] In this embodiment, the operating rod 40 can press down the two one-way plug assemblies 30 at the same time so that the two discharge holes 21 are opened at the same time. Specifically, the lower part of the operating rod 40 is provided with a downward pressure column 421 corresponding to the discharge hole 21 one by one, and a discharge gap 422 is left between the downward pressure column 421 and the discharge hole 21. By driving the operating rod 40 to move downward, the two downward pressure columns 421 simultaneously push open the two one-way plug assemblies 30, thereby opening the two discharge holes 21 at the same time.

[0027] In another embodiment, two operating rods 40 are provided and correspond one to one with the one-way plug assemblies 30. Pressing one of the operating rods 40 can push down the corresponding one-way plug assembly 30, thereby opening the corresponding discharge hole 21. In addition, pressing the two operating rods 40 at the same time can push down the two one-way plug assemblies 30 at the same time, thereby opening the two discharge holes 21.

[0028] The operating rod 40 includes a split upper operating block 41 and a lower pressing piece 42, the lower pressing column 421 is formed at the lower end of the lower pressing piece 42, and the manual pressure relief structure is provided with a locking structure, and the upper operating block 41 can be locked in the pressed position by the locking structure after being pressed down. Further, the locking structure includes a locking groove 411 arranged on the upper operating block 41 and a locking block 50 fixedly arranged on the superposition block 10, the upper operating block 41 is provided with a vertically arranged slide groove 412, and the locking groove 411 is arranged at the top side end of the slide groove 412, and pressing the upper operating block 41 downward can drive the lower pressing column 421 to move downward, thereby pushing open the one-way plug assembly 30, and at this time, the upper operating block 41 is screwed, and the locking block 50 can be inserted into the locking groove 411 and locked with the locking groove 411.

[0029] An operating portion for easy twisting is disposed on the top of the upper operating block 41 , and the operating portion may be a knob portion convexly disposed on the upper end surface of the upper operating block 41 or a strip-shaped groove concavely disposed on the upper end surface of the upper operating block 41 .

[0030] When manual pressure relief is required, the upper operating block 41 is pressed down, and the upper operating block 41 will drive the lower pressure column 421 to move downward, thereby pushing open the elastic plug 31 assembly to allow the discharge hole 21 to be connected. At this time, the air pressure in the front and rear chambers of the driving actuator will be discharged to the outside through the lower accommodating chamber 122, the discharge hole 21, and the upper accommodating chamber 121. By screwing the upper operating block 41, the locking block 50 will be inserted into the locking groove 411 and locked with the locking groove 411, thereby locking the upper operating block 41 in the pressed position. When the discharge work is completed, the upper operating block 41 can be screwed in the opposite direction to allow the locking block 50 to turn away from the locking groove 411. At this time, the operating rod 40 is released, and the operating rod 40 will be reset upward to the initial position under the action of the first elastic member 43. At this time, the one-way plug assembly 30 is reset and the discharge hole 21 is re-blocked.

[0031] At the same time, the operating rod 40 will not be separated from the upper accommodating chamber 121 due to the restriction of the locking block 50. Specifically, since the locking block 50 is inserted into the slide groove 412 of the upper operating block 41, in the initial state, the upper operating block 41 is at the uppermost position due to the elastic force of the first elastic member 43. At this time, the lower end surface of the slide groove 412 of the upper operating block 41 abuts against the locking block 50 to limit the upper operating block 41 from moving upward, thereby limiting the upper operating block 41 from being separated from the upper accommodating chamber 121.

[0032] The valve seat 20 is provided with a receiving groove, and the upper operating block 41 is slidably matched with the groove wall of the receiving groove. Specifically, in the present invention, through this arrangement, the upper operating block 41 can smoothly slide and rotate vertically in the receiving groove.

[0033] The lower part of the valve seat 20 is provided with a lower boss 22 corresponding to the lower accommodating chamber 122 one by one. The lower boss 22 is inserted into the lower accommodating chamber 122. The outer periphery of the lower boss 22 is provided with an annular groove, and a sealing ring 23 is embedded in the annular groove to abut against the groove wall of the lower accommodating chamber 122. Through this arrangement, the fluid medium in the lower accommodating chamber 122 is prevented from being directly discharged from the gap between the valve seat 20 and the lower accommodating chamber 122.

[0034] The valve seat 20 and / or the operating rod 40 are provided with a guide column 423 for guiding the first elastic member 43. In the utility model, the lower part of the operating rod 40 is protruding with a guide column 423, and the first elastic member 43 is sleeved on the outer periphery of the guide column 423. The first elastic member 43 is guided by the guide column 423, and displacement of the first elastic member 43 can be avoided at the same time.

[0035] The one-way plug assembly 30 includes a plug 31 for blocking the discharge hole 21 and a second elastic member 32 abutting against the plug 31 and the inner end surface of the lower accommodating chamber 122. The plug 31 has a tendency to block the discharge hole 21 under the action of the second elastic member 32. In the utility model, the plug 31 is a cylindrical structure, but it can also be other structures, and its outer diameter is smaller than the aperture of the lower accommodating chamber 122 and larger than the aperture of the discharge hole 21.

[0036] In summary, the utility model has the following beneficial effects:

[0037] With the manual pressure relief structure of the present invention, the user can realize the pressure relief function by moving the trend operating lever 40 downward. At the same time, due to the setting of the one-way plug assembly 30, the discharge hole 21 is sealed under normal conditions, thereby avoiding affecting the normal operation of the driving actuator.

[0038] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A manual pressure relief structure of a mid-position non-return stacking module, characterized in that: The invention comprises a stacking block (10), wherein an upper accommodating chamber (121) is provided in the stacking block (10), and two lower accommodating chambers (122) are provided at the lower end of the upper accommodating chamber (121), wherein one lower accommodating chamber (122) is connected to the front chamber of the driving actuator, and the other lower accommodating chamber (122) is connected to the rear chamber of the driving actuator, and a valve seat (20) is fixedly installed in the upper accommodating chamber (121), and a discharge hole (21) corresponding to the lower accommodating chamber (122) is provided in the valve seat (20), and the two lower accommodating chambers (122) are provided with a valve seat (20) and a valve seat (20) and a valve seat (20) are provided in the valve seat (20). A one-way plug assembly (30) is respectively provided, and the one-way plug assembly (30) is used to block the corresponding discharge hole (21). An operating rod (40) is provided in the upper accommodating chamber (121) for independently driving each one-way plug assembly (30) or driving two one-way plug assemblies (30) to move downward simultaneously. A first elastic member (43) is abutted against the operating rod (40) and the valve seat (20). When the discharge hole (21) is opened, the fluid medium is discharged to the outside from the lower accommodating chamber (122), the discharge hole (21) and the upper accommodating chamber (121).

2. The manual pressure relief structure of the mid-position non-return stacking module according to claim 1 is characterized in that: The lower part of the operating rod (40) is provided with a downward pressure column (421) corresponding to the discharge hole (21) one by one, and a discharge gap (422) is reserved between the downward pressure column (421) and the discharge hole (21). By driving the operating rod (40) downward, the two downward pressure columns (421) simultaneously push open the two one-way plug assemblies (30), thereby simultaneously opening the two discharge holes (21).

3. The manual pressure relief structure of the mid-position non-return stacking module according to claim 2 is characterized in that: The operating rod (40) comprises a split upper operating block (41) and a lower pressing piece (42); the lower pressing column (421) is formed at the lower end of the lower pressing piece (42); the manual pressure relief structure is provided with a locking structure; and the upper operating block (41) can be locked in the pressed position by the locking structure after being pressed down.

4. The manual pressure relief structure of the mid-position non-return stacking module according to claim 3 is characterized in that: The locking structure comprises a locking groove (411) arranged on the upper operating block (41) and a locking block (50) fixedly arranged on the superposition block (10); the upper operating block (41) is provided with a vertically arranged slide groove (412); the locking groove (411) is arranged at the top side end of the slide groove (412); pressing the upper operating block (41) downward can drive the downward pressing column (421) to move downward so as to push open the one-way plug assembly (30); at this time, the upper operating block (41) is screwed, and the locking block (50) can be inserted into the locking groove (411) and locked with the locking groove (411).

5. The manual pressure relief structure of the mid-position non-return stacking module according to claim 3 is characterized in that: An operating portion for easy twisting is provided on the top of the upper operating block (41).

6. The manual pressure relief structure of the mid-position non-return stacking module according to claim 3 is characterized in that: The valve seat (20) is provided with a receiving groove, and the upper operating block (41) is slidably matched with the groove wall of the receiving groove.

7. The manual pressure relief structure of the mid-position non-return stacking module according to claim 1 is characterized in that: The lower part of the valve seat (20) is provided with a lower boss (22) corresponding to the lower accommodating chamber (122) one by one. The lower boss (22) is inserted into the lower accommodating chamber (122). An annular groove is provided on the outer periphery of the lower boss (22). A sealing ring (23) is embedded in the annular groove and abuts against the groove wall of the lower accommodating chamber (122).

8. The manual pressure relief structure of the mid-position non-return stacking module according to claim 1 is characterized in that: The valve seat (20) and / or the operating rod (40) are provided with a guide column (423) for guiding the first elastic member (43).

9. The manual pressure relief structure of the mid-position non-return stacking module according to claim 1, characterized in that: The one-way plug assembly (30) comprises a plug (31) for plugging the discharge hole (21) and a second elastic member (32) disposed against the plug (31) and the inner end surface of the lower accommodating chamber (122); the plug (31) has a tendency to plug the discharge hole (21) under the action of the second elastic member (32).

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