Manual pressure relief type one-way valve

Abstract

The invention discloses a manual pressure relief type one-way valve, and relates to the technical field of one-way valves. The pressure relief device comprises a shell, the shell is provided with a liquid inlet and a liquid outlet, a one-way structure is installed in the liquid inlet, the pressure relief device further comprises a pressure relief structure installed on the shell, the pressure relief structure comprises a driving part and an opening and closing part, and the opening and closing part is provided with an opening. The pressure relief structure is installed on the shell, during use, the internal pressure is adjusted by changing the caliber of the opening and closing part of the pressure relief structure, and during adjustment, the cleaning part of the cleaning structure is driven through the driving part of the pressure relief structure, so that the cleaning part scrapes the inner wall of the shell; the movable path of the pressure relief structure is limited through the limiting structure, the possibility of excessive opening and closing of the opening and closing part of the pressure relief structure is reduced, after the limiting structure and the pressure relief structure are disconnected, at the moment, through cooperation of the driving part of the pressure relief structure, connection between the mounting part of the mounting structure and the preassembling part is disconnected, and the device is convenient to disassemble.

Description

Technical Field

[0001] The present application relates to the technical field of one-way valves, and in particular to a manual pressure relief one-way valve. Background Art

[0002] A one-way valve, also known as a non-return valve or a check valve, is a component used in a hydraulic system to prevent the reverse flow of oil, or in a pneumatic system to prevent the reverse flow of compressed air. In the prior art, a pressure relief component is provided on the one-way valve to reduce the damage to the internal pipeline of the one-way valve caused by excessive liquid backflow pressure.

[0003] Existing one-way valves have the following problems:

[0004] The existing one-way valve is not provided with a cleaning component. After the one-way valve is used for a long time, a lot of scale is easily attached inside, which is difficult to clean.

[0005] When installing the existing one-way valve, the one-way valve is installed between the pipe through the thread on it. During installation, the initial distance between the pipes needs to be kept greater than the length of the one-way valve, and then connected through the thread, so that the one-way valve is gradually connected to the pipe, which makes installation more troublesome and subsequent disassembly is also more troublesome;

[0006] Therefore, the present application provides a manual pressure relief one-way valve to improve this problem. Summary of the invention

[0007] The purpose of the present application is to solve the problems in the above-mentioned background technology, and the present application provides a manual pressure relief one-way valve.

[0008] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0009] A manual pressure relief one-way valve comprises a housing, wherein the housing has a liquid inlet and a liquid outlet, a one-way structure is installed in the liquid inlet, and further comprises:

[0010] The pressure relief structure is installed on the housing, the pressure relief structure includes a driving part and an opening and closing part, the opening and closing part has an opening, the opening and closing part is located between the liquid inlet and the liquid outlet, and the driving part is used to change the diameter of the opening;

[0011] The cleaning structure is installed in the shell, and the cleaning structure comprises a connecting part and a cleaning part, the connecting part is connected to the driving part of the pressure relief structure, and the cleaning part contacts the inner wall of the shell, and when the driving part changes the caliber of the opening, the connecting part drives the cleaning part to scrape the inner wall of the shell;

[0012] A limiting structure is installed on the housing, and the limiting structure is detachably connected to the driving part of the pressure relief structure. When the limiting structure is connected to the driving part of the pressure relief structure, the limiting structure limits the moving path of the driving part of the pressure relief structure;

[0013] The mounting structure is mounted on the outer shell, and comprises a pre-mounting part and a mounting part, the pre-mounting part is connected to the pipeline, the mounting part is connected to the driving part of the pressure relief structure, the mounting part is movably connected to the outer shell and is located on both sides of the outer shell, when the mounting part moves to the maximum limit, the distance between the mounting parts is greater than the length of the outer shell, and when the limiting structure is disconnected from the driving part of the pressure relief structure, the driving part of the pressure relief structure is used to disconnect the pre-mounting part from the mounting part.

[0014] Furthermore, the pressure relief structure comprises:

[0015] A back plate is installed inside the housing, the back plate is provided with a hexagonal groove, a plurality of shielding plates are slidably installed in the hexagonal groove, the opening is located between the shielding plates, the back plate is provided with a through hole for liquid to pass through, and the through hole is connected to the opening;

[0016] A rotating plate is rotatably mounted inside the housing, a through opening is also provided on the rotating plate, a sliding groove is provided on the rotating plate, and a sliding rod that is slidably matched with the sliding groove is installed on the shielding plate;

[0017] The magnet ring is rotatably mounted outside the shell, and an iron block is mounted on the rotating plate. When the magnet ring rotates, the iron block is driven to move in the shell by magnetic force.

[0018] Furthermore, the cleaning structure comprises:

[0019] A rotating rod is rotatably mounted in the housing, a receiving groove is provided on the rotating rod, and an inserting block for inserting into the receiving groove is installed on the rotating plate;

[0020] The scraping blocks are installed on the rotating rod. There are multiple scraping blocks, and the scraping blocks are arranged in a circular array around the rotating rod along the axis direction of the rotating rod.

[0021] Furthermore, the mounting structure comprises:

[0022] A pre-installed plate is installed on the pipeline, and an annular cavity is formed on the pre-installed plate, and a resisting plate is installed in the annular cavity through a connecting spring;

[0023] A mounting plate, movably mounted on the end of the housing, the mounting plate is used to be inserted into the annular cavity, a convex plate is mounted on the mounting plate, a notch for the convex plate to pass through is opened on the pre-installed plate, and when the mounting plate is inserted into the annular cavity, the mounting plate abuts against the abutment plate;

[0024] The connecting rod is mounted on the mounting plate, and the free end of the connecting rod is slidably connected with the magnet ring, so that when the magnet ring rotates, the connecting rod drives the mounting plate to rotate.

[0025] Furthermore, the limiting structure includes:

[0026] The limiting rod is slidably mounted on the housing, the magnet ring is provided with a limiting groove, the limiting rod is slidably matched with the limiting groove, and the center angle of the limiting groove is less than ninety degrees;

[0027] The limit plate is installed on the shell, the limit rod is slidably matched with the limit plate, the limit rod is installed with a hook plate, and the limit plate is provided with a limit hole for the hook plate to pass through. When the hook plate is inserted into the limit hole, the sliding of the limit rod is restricted.

[0028] Furthermore, a plurality of ring sleeves are installed in the liquid outlet, and the diameter of the ring sleeves gradually decreases from the liquid inlet to the liquid outlet.

[0029] Furthermore, a reflux pipe is installed on the shell, one end of the reflux pipe is located at the liquid outlet, and the other end is located between the liquid outlet and the liquid inlet. An inclined block is installed at the end of the reflux pipe away from the liquid outlet, and the inclined surface of the inclined block faces the liquid outlet.

[0030] Furthermore, a guide block is installed on the shell, a circular plate is installed at the end of the shell, a sliding hole slidably matched with the guide block is opened on the mounting plate, a circular cavity rotatably matched with the circular plate is opened on the mounting plate, and the circular cavity is connected with the sliding hole.

[0031] Furthermore, an expansion panel is installed on the abutment plate, and an expansion groove for accommodating the expansion panel is provided on the mounting plate.

[0032] Furthermore, a guide slope is provided on a side of the mounting plate away from the housing, so that the area of ​​the mounting plate away from the side of the housing is reduced.

[0033] The beneficial effects of this application are as follows:

[0034] The present application has a pressure relief structure installed on the shell. When in use, the internal pressure is adjusted by changing the diameter of the opening and closing part. During the adjustment, the cleaning part of the cleaning structure is driven by the driving part of the pressure relief structure, so that the cleaning part scrapes the inner wall of the shell, and the activity path of the pressure relief structure is limited by the limiting structure, thereby reducing the possibility of excessive opening and closing of the opening and closing part of the pressure relief structure. When the limiting structure is disconnected from the pressure relief structure, at this time, the installation part of the installation structure is disconnected from the pre-installation part through the cooperation of the driving part of the pressure relief structure, so that the device can be disassembled easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0036] Figure 2 It is an exploded view of some structures of this application;

[0037] Figure 3 It is an exploded diagram of the pressure relief structure of this application;

[0038] Figure 4 It is an exploded view of the cleaning structure of this application;

[0039] Figure 5 This is the exploded view of the installation structure of this application;

[0040] Figure 6 This is another exploded view of the installation structure of this application;

[0041] Figure 7 It is an exploded view of the limiting structure of this application;

[0042] Figure 8 This application Figure 1 The three-dimensional cross-sectional view of the middle structure;

[0043] Fig. 9 This application Figure 8 Enlarged view of point A in the middle;

[0044] Figure numerals: 1, housing; 101, liquid inlet; 102, liquid outlet; 2, one-way structure; 3, pressure relief structure; 301, opening; 302, hexagonal groove; 303, shielding plate; 304, back plate; 305, through-port; 306, rotating plate; 307, slide groove; 308, slide rod; 309, magnet ring; 3010, iron block; 4, cleaning structure; 401, rotating rod; 402, receiving groove; 403, plug block; 404, scraper block; 5, mounting structure; 50 1. Pre-installed plate; 502. Ring cavity; 503. Connecting spring; 504. Resistance plate; 505. Mounting plate; 506. Protruding plate; 507. Notch; 508. Connecting rod; 6. Limiting structure; 601. Limiting rod; 602. Limiting groove; 603. Limiting plate; 604. Hook plate; 605. Limiting hole; 7. Ring sleeve; 8. Return pipe; 9. Oblique block; 10. Guide block; 11. Round plate; 12. Sliding hole; 13. Round cavity; 14. Expanding panel; 15. Expanding groove. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0046] Embodiment 1

[0047] like Figure 1-Figure 9 As shown, a manual pressure relief one-way valve proposed in the first embodiment of the present application includes a housing 1, the housing 1 has a liquid inlet 101 and a liquid outlet 102, a one-way structure 2 is installed in the liquid inlet 101, and the one-way structure 2 is as shown in FIG. Figure 2 and Figure 8As shown, it is combined with the housing 1 to form an existing one-way valve structure, so that the liquid entering the housing 1 can only move from the liquid inlet 101 to the liquid outlet 102, and also includes:

[0048] The pressure relief structure 3 is installed on the housing 1. The pressure relief structure 3 includes a driving part and an opening and closing part. The opening and closing part has an opening 301. The opening and closing part is located between the liquid inlet 101 and the liquid outlet 102. The driving part is used to change the diameter of the opening 301. When in use, the driving part of the pressure relief structure 3 cooperates with the opening 301 to increase the diameter, thereby reducing the pressure caused by the liquid on the inside of the housing 1 and reducing the loss caused by the backflow liquid on the inner wall of the housing 1.

[0049] The cleaning structure 4 is installed in the housing 1. The cleaning structure 4 has a connecting part and a cleaning part. The connecting part is connected to the driving part of the pressure relief structure 3. The cleaning part contacts the inner wall of the housing 1. When the driving part changes the diameter of the opening 301, the connecting part drives the cleaning part to scrape the inner wall of the housing 1. When the housing 1 is depressurized, the connecting part of the cleaning structure 4 drives the cleaning part of the cleaning structure 4 to scrape the inner wall of the housing 1 through the cooperation of the driving part of the pressure relief structure 3, thereby reducing the possibility of scale adhering to the inner wall of the housing 1 and facilitating subsequent disassembly and cleaning.

[0050] The limiting structure 6 is installed on the housing 1. The limiting structure 6 is detachably connected to the driving part of the pressure relief structure 3. When the limiting structure 6 is connected to the driving part of the pressure relief structure 3, the limiting structure 6 limits the activity path of the driving part of the pressure relief structure 3. When the pressure relief structure 3 is used, the activity path of the driving part is limited by the cooperation of the limiting structure 6, which reduces the possibility of excessive wear of the opening and closing part due to excessive activity of the driving part, thereby increasing the practicality of the device;

[0051] The mounting structure 5 is mounted on the housing 1. The mounting structure 5 comprises a pre-installation part and a mounting part. The pre-installation part is connected to the pipeline. The mounting part is connected to the driving part of the pressure relief structure 3. The mounting part is movably connected to the housing 1 and is located on both sides of the housing 1. When the mounting part moves to the maximum limit, the distance between the mounting parts is greater than the length of the housing 1. On the contrary, when the mounting part does not move to the maximum distance, the length of the entire housing 1 is shorter and may be shorter than the distance between the two pipes. After the pre-installation part is installed on the pipe, the housing 1 is placed between the two pipes. Then, through the movement of the mounting part, the mounting part is connected to the pre-installation part, so as to facilitate the installation or removal of the device.

[0052] When the limiting structure 6 is disconnected from the driving part of the pressure relief structure 3, the driving part of the pressure relief structure 3 is used to disconnect the pre-installed part from the installation part. When in use, the limiting structure 6 plays a locking role, and the driving part of the pressure relief structure 3 plays a key role, which increases the practicality of both.

[0053] Compared with the prior art, a pressure relief structure 3 is installed on the shell 1. When in use, the internal pressure is adjusted by changing the diameter of the opening and closing part. During adjustment, the cleaning part of the cleaning structure 4 is driven by the driving part of the pressure relief structure 3, so that the cleaning part scrapes the inner wall of the shell 1, and the activity path of the pressure relief structure 3 is limited by the limiting structure 6, thereby reducing the possibility of excessive opening and closing of the opening and closing part of the pressure relief structure 3. When the limiting structure 6 is disconnected from the pressure relief structure 3, at this time, the installation part of the installation structure 5 is disconnected from the pre-installed part through the cooperation of the driving part of the pressure relief structure 3, so that the device can be disassembled easily.

[0054] Embodiment 2

[0055] like Figure 1-Figure 9 As shown, the second embodiment discloses the pressure relief structure 3, the cleaning structure 4, the mounting structure 5 and the limiting structure 6 on the basis of the first embodiment. In the second embodiment, the pressure relief structure 3 includes:

[0056] A back plate 304 is installed inside the housing 1. A hexagonal groove 302 is provided on the back plate 304. A plurality of shielding plates 303 are slidably installed in the hexagonal groove 302. The shielding plates 303 have protrusions. The shielding plates 303 are slidably matched with the hexagonal groove 302 through the protrusions. There are six shielding plates 303.

[0057] The opening 301 is located between the shielding plates 303. A through hole 305 for liquid to pass through is provided on the back plate 304. The through hole 305 is connected with the opening 301. When the shielding plates 303 move away from each other through sliding between the shielding plates 303, the diameter of the opening 301 increases, and vice versa. The shielding plates 303 are opening and closing parts. When in use, the liquid moves from the liquid inlet 101 to the liquid outlet 102 through the opening 301 and the through hole 305.

[0058] The rotating plate 306 is rotatably mounted inside the housing 1. The rotating plate 306 is also provided with a through opening 305. The rotating plate 306 is provided with a slide groove 307. The shielding plate 303 is provided with a slide rod 308 that slidably cooperates with the slide groove 307. The rotating plate 306, the back plate 304 and the shielding plate 303 form an iris mechanism. When the rotating plate 306 rotates, the slide rod 308 is pushed through the inner wall of the slide groove 307, so that the slide rod 308 drives the shielding plate 303 to slide in the hexagonal groove 302, so that the multiple shielding plates 303 move synchronously, so that the shielding plates 303 move away from or approach synchronously, which is convenient for changing the caliber of the outer shell 1.

[0059] The diameters of the inner walls of the housing 1 are uniform. For the sake of easy observation, the three locations where the pressure relief structures are installed are enlarged for display.

[0060] The magnet ring 309 is rotatably installed on the outside of the shell 1, and an iron block 3010 is installed on the rotating plate 306. When the magnet ring 309 rotates, the iron block 3010 is driven to move in the shell 1 by magnetic force. The magnet ring 309 and the rotating plate 306 constitute a driving part. The magnet ring 309 is located outside the shell 1. The magnet ring 309 includes an annular block and a magnet. The magnet is located at a position corresponding to the iron block 3010. When in use, it will not affect the sealing of the shell 1. When in use, when the magnet ring 309 rotates, the iron block 3010 is pulled to move in the same direction by magnetic force, so that the rotating plate 306 gradually rotates inside the shell 1 to change the size of the opening 301.

[0061] In the second embodiment, the cleaning structure 4 includes:

[0062] The rotating rod 401 is rotatably mounted in the housing 1. The rotating rod 401 is provided with a receiving groove 402. The rotating plate 306 is provided with an inserting block 403 for inserting into the receiving groove 402. The inserting block 403 is inserted into the receiving groove 402, so that when the rotating plate 306 rotates, the inserting block 403 pushes the inner wall of the receiving groove 402, thereby causing the rotating rod 401 to rotate in the housing 1. The rotating rod 401 is a connecting portion.

[0063] The scraper block 404 is installed on the rotating rod 401. The scraper block 404 is the cleaning part. There are multiple scraper blocks 404. The scraper blocks 404 are arranged in a circular array around the rotating rod 401 along the axial direction of the rotating rod 401. When in use, when the rotating rod 401 rotates, the scraper block 404 is driven to rotate in the outer shell 1, so that the side wall of the scraper block 404 scrapes the inner wall of the outer shell 1, reducing the possibility of scale adhering to the inner wall of the outer shell 1, which is convenient for cleaning after disassembly.

[0064] In the second embodiment, the mounting structure 5 includes:

[0065] The pre-installed plate 501 is installed on the pipeline. The pre-installed plate 501 is provided with an annular cavity 502. A resisting plate 504 is installed in the annular cavity 502 via a connecting spring 503. The pre-installed plate 501 is installed on the pipeline by using construction glue or other methods. The connecting spring 503 forces the resisting plate 504 to stay away from the pre-installed plate 501. The pre-installed plate 501 is a pre-installed part.

[0066] The mounting plate 505 is movably mounted at the end of the housing 1. The mounting plate 505 is a mounting portion. The mounting plate 505 can slide and rotate on the housing 1. The mounting plate 505 is used to be inserted into the annular cavity 502. A convex plate 506 is installed on the mounting plate 505. A notch 507 for the convex plate 506 to pass through is provided on the pre-installed plate 501. When the mounting plate 505 is inserted into the annular cavity 502, the mounting plate 505 conflicts with the abutment plate 504. In use, the convex plate 506 is first aligned with the notch 507, and the mounting plate 505 is inserted into the annular cavity 502 so that the mounting plate 505 conflicts with and squeezes the abutment plate 504. Then, the mounting plate 505 is rotated so that the inner wall of the annular cavity 502 blocks the convex plate 506, thereby connecting the mounting plate 505 with the pre-installed plate 501.

[0067] The connecting rod 508 is mounted on the mounting plate 505. The free end of the connecting rod 508 is slidably connected with the magnet ring 309, so that when the magnet ring 309 rotates, the connecting rod 508 drives the mounting plate 505 to rotate. When in use, when the mounting plate 505 slides on the housing 1, the connecting rod 508 slides on the magnet ring 309. When the magnet ring 309 is disconnected from the limiting structure 6, the magnet ring 309 can rotate on the housing 1 to a large extent. At this time, the rotating magnet ring 309 drives the connecting rod 508 and the mounting plate 505 to rotate, and the contact plate 504 is pushed by the connecting spring 503 to contact the mounting plate 505, thereby reducing the gap between the two and increasing the sealing performance between the device and the pipeline.

[0068] When disassembly is required, the mounting plate 505 is rotated in the opposite direction so that the convex plate 506 is aligned with the notch 507, and then the mounting plate 505 is slid so that the mounting plate 505 and the pre-installed plate 501 are disassembled. When the mounting plate 505 is slid onto the housing 1, the length of the entire device is reduced. When the device is installed, the distance between the initial positions of the two pipes can be set to be greater than the length of the housing 1, instead of the initial position being the same length as the valve body as in the prior art;

[0069] Furthermore, when the mounting plate 505 is located in the ring cavity 502 during use, the abutment plate 504 abuts against the mounting plate 505 , so that when the user rotates the magnet ring 309 , there will be a more obvious tactile feedback, thereby increasing the practicability of the device.

[0070] In the second embodiment, the limiting structure 6 includes:

[0071] The limiting rod 601 is slidably mounted on the housing 1, and a limiting groove 602 is provided on the magnet ring 309. The limiting rod 601 and the limiting groove 602 are slidably matched, and the central angle of the limiting groove 602 is less than ninety degrees, wherein the limiting groove 602 and the magnet on the magnet ring 309 are located at the same place on the magnet ring 309. When the limiting rod 601 is inserted into the limiting groove 602, the maximum rotation angle of the magnet ring 309 is not more than ninety degrees. When the mounting plate 505 is rotated to connect with the pre-installed plate 501, the rotation angle between the two is greater than or equal to ninety degrees, which reduces the possibility of excessive conflict between the sliding rod 308 and the inner wall of the sliding groove 307 due to excessive rotation of the magnet ring 309, thereby increasing the service life of the two.

[0072] The limiting plate 603 is mounted on the housing 1. The limiting rod 601 is slidably matched with the limiting plate 603. A hook plate 604 is mounted on the limiting rod 601. A limiting hole 605 for the hook plate 604 to pass through is provided on the limiting plate 603. When the hook plate 604 is inserted into the limiting hole 605, the sliding of the limiting rod 601 is restricted. The hook plate 604 is shaped as follows: Figure 7 As shown, the hook plate 604 is made of plastic or other elastic materials. When in use, the hook end of the hook plate 604 contacts the side wall of the limiting hole 605 to limit the sliding of the limiting rod 601, thereby increasing the stability of the limiting rod 601 when limiting. When disassembly is required, the hook plate 604 is pressed or bent so that the hook end of the hook plate 604 is aligned with the orifice of the limiting hole 605. At this time, the limiting rod 601 is slid to separate the limiting rod 601 from the limiting groove 602, thereby releasing the restriction on the movement path of the magnet ring 309 and performing subsequent disassembly.

[0073] When the magnet ring 309 acts on the pressure relief structure 3, it acts as a driving member to drive the rotating plate 306 to rotate, but when it acts on the mounting structure 5, it acts as a key, and rotating the magnet ring 309 releases the connection between the mounting plate 505 and the pre-installed plate 501;

[0074] When the limiting rod 601 acts on the magnet ring 309, it plays a limiting role, reducing the rotation range of the magnet ring 309. When it acts on the mounting structure 5, it plays a locking role. As long as the limiting rod 601 is inserted into the limiting groove 602, the rotation range of the magnet ring 309 can only be less than ninety degrees. At this time, the rotation of the magnet ring 309 will not make the convex plate 506 and the notch 507 aligned, so that the mounting plate 505 cannot be disconnected from the pre-installed plate 501.

[0075] Through the above design, the practicality of the magnet ring 309 and the limiting rod 601 is increased.

[0076] Embodiment 3

[0077] like Figure 1-Figure 9As shown, the third embodiment further discloses the present application on the basis of the second embodiment. In the third embodiment, a plurality of ring sleeves 7 are installed in the liquid outlet 102. The diameter of the ring sleeve 7 gradually decreases from the liquid inlet 101 to the liquid outlet 102. When the liquid flows back, it will pass through the ring sleeve 7. The diameter of the ring sleeve 7 gradually decreases from one end toward the liquid outlet 102 to the other end, thereby reducing the pressure of the water flow. The outer wall of the ring sleeve 7 blocks the water flow. When the water flow contacts the outer wall of the ring sleeve 7, the outer wall of the ring sleeve 7 blocks the water flow, thereby reducing the impact of the water flow, thereby increasing the pressure relief effect of the device.

[0078] In embodiment three, a return pipe 8 is installed on the housing 1, one end of the return pipe 8 is located at the liquid outlet 102, and the other end is located between the liquid outlet 102 and the liquid inlet 101. An inclined block 9 is installed at the pipe opening of the end of the return pipe 8 away from the liquid outlet 102, and the inclined surface of the inclined block 9 faces the liquid outlet 102. Under normal conditions, the scraper block 404 is used to cover the pipe opening of the return pipe 8 away from the liquid outlet 102. When pressure is released, the magnet ring 309 is rotated to rotate the rotating plate 306 and the scraper block 404, and the scraper block 404 removes the cover on the pipe opening of the return pipe 8. At this time, the water flow in the return pipe 8 is sprayed out, and the water flow sprayed out of the return pipe 8 is guided by the inclined block 9 to the liquid outlet 102, and is offset by the water flow flowing back from the liquid outlet 102, thereby reducing the impact force and pressure caused by the backflow of water and increasing the pressure relief effect of the device.

[0079] In embodiment three, a guide block 10 is installed on the shell 1, a circular plate 11 is installed on the end of the shell 1, a sliding hole 12 that slides with the guide block 10 is opened on the mounting plate 505, and a circular cavity 13 that rotates with the circular plate 11 is opened on the mounting plate 505. The circular cavity 13 is connected with the sliding hole 12. When the mounting plate 505 slides on the shell 1, the side wall of the guide block 10 contacts the inner wall of the sliding hole 12, so that the mounting plate 505 can only slide on the shell 1 along a straight line. When sliding to the maximum limit, the circular plate 11 is inserted into the circular cavity 13 and the guide block 10 is disconnected from the sliding hole 12. At this time, the mounting plate 505 can rotate on the shell 1, which is convenient for the mounting plate 505 to be connected with the pre-installed plate 501, thereby increasing the stability of the mounting plate 505 when in use.

[0080] In embodiment three, an expansion panel 14 is installed on the contact plate 504, and an expansion groove 15 for accommodating the expansion panel 14 is opened on the mounting plate 505. When in use, the expansion panel 14 is ring-shaped. When the mounting plate 505 contacts the contact plate 504, the gap between the two forms multiple corners, which further increases the sealing between the two. Moreover, through the connection between the expansion panel 14 and the expansion groove 15, the contact area between the mounting plate 505 and the contact plate 504 is increased, thereby increasing the connection strength between the two and increasing the stability of the device when in use.

[0081] In the third embodiment, a guiding bevel is provided on the side of the mounting plate 505 away from the outer shell 1 to reduce the area of ​​the mounting plate 505 away from the side of the outer shell 1. When in use, the area of ​​the end face of the mounting plate 505 is reduced by the guiding bevel, which facilitates the alignment of the mounting plate 505 with the outlet of the annular cavity 502, and then facilitates the insertion of the mounting plate 505 into the annular cavity 502, thereby increasing the convenience of installing the mounting plate 505.

[0082] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A manual pressure relief one-way valve, comprising a housing (1), wherein the housing (1) has a liquid inlet (101) and a liquid outlet (102), a one-way structure (2) is installed in the liquid inlet (101), and the valve is characterized in that: Also includes: The pressure relief structure (3) is mounted on the housing (1). The pressure relief structure (3) comprises a driving part and an opening and closing part. The opening and closing part has an opening (301). The opening and closing part is located between the liquid inlet (101) and the liquid outlet (102). The driving part is used to change the diameter of the opening (301). The pressure relief structure (3) comprises a back plate (304). The back plate (304) is mounted inside the housing (1). A hexagonal groove (302) is formed on the back plate (304). A plurality of shielding plates (303) are slidably mounted in the hexagonal groove (302). The opening (301) is located between the shielding plates (303). A useful A through-port (305) for liquid to pass through is provided, the through-port (305) is communicated with the opening (301), a rotating plate (306) is rotatably mounted inside the housing (1), the rotating plate (306) is also provided with a through-port (305), a sliding groove (307) is provided on the rotating plate (306), a sliding rod (308) slidably matched with the sliding groove (307) is installed on the shielding plate (303), a magnet ring (309) is rotatably mounted outside the housing (1), an iron block (3010) is installed on the rotating plate (306), and when the magnet ring (309) rotates, the iron block (3010) is driven to move inside the housing (1) by magnetic force; A cleaning structure (4) is installed in the housing (1). The cleaning structure (4) comprises a connecting part and a cleaning part. The connecting part is connected to the driving part of the pressure relief structure (3). The cleaning part contacts the inner wall of the housing (1). When the driving part changes the diameter of the opening (301), the connecting part drives the cleaning part to scrape the inner wall of the housing (1). The cleaning structure (4) also comprises a rotating rod (401). The rotating rod (401) is rotatably installed in the housing (1). A receiving groove (402) is provided on the rotating rod (401). An inserting block (403) for inserting into the receiving groove (402) is installed on the rotating plate (306). A scraping block (404) is installed on the rotating rod (401). There are a plurality of scraping blocks (404). The scraping blocks (404) are arranged in a circular array around the rotating rod (401) along the axis direction of the rotating rod (401). A limiting structure (6) is mounted on the housing (1), the limiting structure (6) being detachably connected to the driving part of the pressure relief structure (3), and when the limiting structure (6) is connected to the driving part of the pressure relief structure (3), the limiting structure (6) limits the moving path of the driving part of the pressure relief structure (3); The mounting structure (5) is mounted on the housing (1), the mounting structure (5) comprising a pre-mounting part and a mounting part, the pre-mounting part being connected to the pipeline, the mounting part being connected to the driving part of the pressure relief structure (3), the mounting part being movably connected to the housing (1) and being located on both sides of the housing (1), when the mounting part moves to a maximum extent, the distance between the mounting parts is greater than the length of the housing (1), and when the limiting structure (6) is disconnected from the driving part of the pressure relief structure (3), the driving part of the pressure relief structure (3) is used to disconnect the pre-mounting part from the mounting part.

2. The manual pressure relief check valve according to claim 1, characterized in that: The mounting structure (5) comprises: A pre-installed plate (501) is installed on the pipeline. An annular cavity (502) is provided on the pre-installed plate (501). A resisting plate (504) is installed in the annular cavity (502) via a connecting spring (503). A mounting plate (505) is movably mounted on the end of the housing (1); the mounting plate (505) is used to be inserted into the annular cavity (502); a convex plate (506) is mounted on the mounting plate (505); a notch (507) is provided on the pre-installed plate (501) for the convex plate (506) to pass through; when the mounting plate (505) is inserted into the annular cavity (502), the mounting plate (505) abuts against the abutment plate (504); The connecting rod (508) is mounted on the mounting plate (505), and the free end of the connecting rod (508) is slidably connected to the magnet ring (309), so that when the magnet ring (309) rotates, the connecting rod (508) drives the mounting plate (505) to rotate.

3. The manual pressure relief check valve according to claim 2, characterized in that: The limiting structure (6) comprises: A limiting rod (601) is slidably mounted on the housing (1); a limiting groove (602) is provided on the magnet ring (309); the limiting rod (601) and the limiting groove (602) are slidably matched; and a central angle of the limiting groove (602) is less than ninety degrees; The limiting plate (603) is mounted on the housing (1), the limiting rod (601) is slidably matched with the limiting plate (603), the limiting rod (601) is mounted with a hook plate (604), the limiting plate (603) is provided with a limiting hole (605) for the hook plate (604) to pass through, when the hook plate (604) is inserted into the limiting hole (605), the sliding of the limiting rod (601) is restricted.

4. The manual pressure relief check valve according to claim 3, characterized in that: A plurality of ring sleeves (7) are installed in the liquid outlet (102), and the diameter of the ring sleeves (7) gradually decreases from the liquid inlet (101) to the liquid outlet (102).

5. The manual pressure relief check valve according to claim 4, characterized in that: A reflux pipe (8) is installed on the housing (1), one end of the reflux pipe (8) is located at the liquid outlet (102), and the other end is located between the liquid outlet (102) and the liquid inlet (101), and an inclined block (9) is installed at the end of the reflux pipe (8) away from the liquid outlet (102), with the inclined surface of the inclined block (9) facing the liquid outlet (102).

6. The manual pressure relief check valve according to claim 5, characterized in that: A guide block (10) is mounted on the housing (1), a circular plate (11) is mounted on the end of the housing (1), a sliding hole (12) slidably engaged with the guide block (10) is formed on the mounting plate (505), a circular cavity (13) rotatably engaged with the circular plate (11) is formed on the mounting plate (505), and the circular cavity (13) is communicated with the sliding hole (12).

7. The manual pressure relief check valve according to claim 6, characterized in that: An expansion panel (14) is mounted on the abutment plate (504), and an expansion groove (15) for accommodating the expansion panel (14) is provided on the mounting plate (505).

8. The manual pressure relief check valve according to claim 7, characterized in that: A guide slope is provided on the side of the mounting plate (505) away from the housing (1), so as to reduce the area of ​​the mounting plate (505) away from the side of the housing (1).

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