Vacuum one-way valve device for filter

Abstract

The utility model relates to the technical field of vacuum one-way valve devices for filters, and discloses a vacuum one-way valve device for a filter, which comprises a valve body, connecting pipes are fixedly connected to two sides of the valve body, a fixing ring is sleeved in one group of connecting pipes, a buffer component is slidably connected in the fixing ring, and the buffer component is fixedly connected with the valve body. A top cover is fixedly mounted at the top of the valve body through bolts, a discharging pipe is connected to the top of the top cover in a penetrating mode, a positioning piece is connected to the interior of the discharging pipe in a sleeved mode, a telescopic assembly is slidably connected to the interior of the positioning piece, and the buffering assembly comprises a sliding ring slidably connected to the interior of a fixing ring. According to the vacuum one-way valve device for the filter, through the arrangement of the buffer assembly, the effect of counteracting part of instantaneous pressure pushed by the valve body is achieved, deformation or damage of a valve part caused by beating due to sudden pressure increase is avoided, meanwhile, the risk of medium backflow can be reduced through a dynamic compensation mechanism, and the sealing reliability of a one-way valve is improved.

Description

A vacuum check valve device for a filter Technical Field

[0001] This utility model relates to the technical field of vacuum one-way valve devices for filters, and in particular to a vacuum one-way valve device for filters. Background Technology

[0002] A vacuum check valve device for filters is typically used to control the flow direction in liquid or gas systems, ensuring that fluid flows in only one direction while preventing backflow that could cause system malfunction or contamination. This type of device is particularly suitable for systems requiring filtration, such as air or water filters, where the aim is to ensure the filter operates only in the correct flow direction. The vacuum check valve is designed to open when a vacuum is created within the system, preventing the backflow of outside air or liquid.

[0003] However, existing vacuum check valve devices for filters often suffer from deformation or damage to valve components due to sudden pressure increases, and lack dynamic compensation, which can easily increase the risk of media backflow. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The purpose of this utility model is to provide a vacuum check valve device for filters, which solves the problem mentioned in the background art that the valve components of existing vacuum check valve devices for filters are often deformed or damaged due to sudden pressure increases and impacts, and lack dynamic compensation, which easily increases the risk of media backflow.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum one-way valve device for a filter, comprising a valve body, with connecting pipes fixedly connected to both sides of the valve body. A fixing ring is sleeved inside one set of the connecting pipes, and a buffer assembly is slidably connected inside the fixing ring. A top cover is fixedly installed on the top of the valve body by bolts, and a discharge pipe is connected through the top of the top cover. A positioning plate is sleeved inside the discharge pipe, and a telescopic assembly is slidably connected inside the positioning plate. The buffer assembly includes a sliding ring slidably connected inside the fixing ring. Several sets of support springs are fixedly connected in a circular array on one side of the sliding ring, and a positioning rod is sleeved inside the support spring. The telescopic assembly includes a sliding rod slidably connected inside the positioning plate, with a piston fixedly connected to one end of the sliding rod, and a telescopic spring fixedly connected to the bottom of the piston.

[0008] As a further embodiment of this utility model, a limiting ring is sleeved on the top of the valve body, and a fixing block is fixedly connected to the inner wall of the limiting ring. The fixing block serves to support the limiting plate.

[0009] As a further embodiment of this utility model, two sets of limiting plates are fixedly connected to one side of the fixing block, and a rotating rod is rotatably connected inside the limiting plate. The rotating rod facilitates the rotation of the support rod.

[0010] As a further embodiment of this utility model, a support rod is sleeved on the surface of the rotating rod, and a valve body is fixedly installed on one side of the bottom of the support rod by bolts. The valve body serves to maintain the unidirectional flow of the medium.

[0011] As a further embodiment of this utility model, both ends of the rotating rod are fitted with a spring, and the other end of the spring is fitted with a protective shell. The protective shell serves to protect and support the spring.

[0012] As a further embodiment of this utility model, a positioning ring is fixedly connected to one end of the support spring. The positioning ring is sleeved on the inner wall of the fixed ring, and the positioning ring plays a role in fixing and supporting the spring.

[0013] As a further embodiment of this utility model, a sealing ring is fitted onto the surface of the piston, and two sets of through holes are provided on the surface of the positioning plate. The through holes facilitate the passage of the medium.

[0014] (III) Beneficial Effects

[0015] This utility model provides a vacuum one-way valve device for a filter, which has the following advantages:

[0016] 1. This filter uses a vacuum one-way valve device. Through the setting of the buffer component, during use, the medium on one side of the valve body squeezes the valve body, causing the support rod on the valve body to drive the rotating rod to rotate on the limit plate. In turn, the valve body rotates and squeezes the sliding ring, causing the sliding ring to slide within the fixed ring and squeeze the support spring. Then, the positioning rod slides on one side of the sliding ring. The support spring deforms under force and generates elastic force, thereby achieving the effect of offsetting part of the instantaneous pressure of the valve body pushing. This avoids the deformation or damage of valve components caused by sudden pressure increase and impact. At the same time, the dynamic compensation mechanism can reduce the risk of medium backflow and improve the reliability of the one-way valve sealing.

[0017] 2. This filter uses a vacuum one-way valve device. Through the setting of the telescopic component, when the pressure on one side of the valve body is too high during use, the medium passes through the through hole on the positioning plate at the top of the valve body and enters the discharge pipe. It then continues to squeeze the piston along the discharge pipe. The telescopic spring deforms under force, causing the piston to slide into the cavity in the discharge pipe. The medium is discharged from the gap between the piston and the discharge pipe. When the pressure is released, the telescopic spring pulls the piston to retract in order to restore its deformation, thereby achieving the effect of releasing the excess internal pressure. This avoids the valve body or valve body being damaged by excessive pressure and improves the service life of the device. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 is a schematic diagram of the main structure of the valve of this utility model;

[0021] Figure 4 is a schematic diagram of the telescopic component structure of this utility model;

[0022] Figure 5 is a schematic diagram of the buffer component structure of this utility model.

[0023] In the diagram: 1. Valve body; 2. Connecting pipe; 3. Fixing ring; 4. Buffer assembly; 401. Sliding ring; 402. Support spring; 403. Positioning rod; 5. Top cover; 6. Discharge pipe; 7. Positioning plate; 8. Telescopic assembly; 801. Sliding rod; 802. Piston; 803. Telescopic spring; 9. Limiting ring; 10. Fixing block; 11. Limiting plate; 12. Rotating rod; 13. Support rod; 14. Valve body; 15. Spring spring; 16. Protective shell; 17. Positioning ring; 18. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please refer to Figures 1 to 5. This utility model provides a technical solution: a vacuum one-way valve device for a filter, including a valve body 1. Connecting pipes 2 are fixedly connected to both sides of the valve body 1. A fixing ring 3 is sleeved inside one set of connecting pipes 2. A buffer assembly 4 is slidably connected inside the fixing ring 3. The buffer assembly 4 offsets part of the instantaneous pressure exerted by the valve body 14, preventing deformation or damage to the valve components due to sudden pressure increases. Simultaneously, the dynamic compensation mechanism reduces the risk of media backflow and improves the reliability of the one-way valve's sealing. A top cover 5 is bolted to the top of the valve body 1. A discharge pipe 6 is connected through the top of the top cover 5. A buffer assembly 4 is slidably connected inside the discharge pipe 6. The device includes a positioning plate 7, with a telescopic assembly 8 slidably connected inside the positioning plate 7. The telescopic assembly 8 helps to release excess internal pressure, preventing excessive pressure from damaging the valve body 1 or valve main body 14 and improving the service life of the device. The buffer assembly 4 includes a sliding ring 401 slidably connected inside the fixed ring 3. Several sets of support springs 402 are fixedly connected in a ring array on one side of the sliding ring 401. A positioning rod 403 is sleeved inside the support spring 402. The telescopic assembly 8 includes a sliding rod 801 slidably connected inside the positioning plate 7. A piston 802 is fixedly connected to one end of the sliding rod 801, and a telescopic spring 803 is fixedly connected to the bottom of the piston 802.

[0026] A limit ring 9 is fitted onto the top of the valve body 1. A fixing block 10 is fixedly connected to the inner wall of the limit ring 9. The fixing block 10 serves to support the limit piece 11.

[0027] Two sets of limiting plates 11 are fixedly connected to one side of the fixed block 10. A rotating rod 12 is rotatably connected inside the limiting plate 11. The rotating rod 12 facilitates the rotation of the support rod 13.

[0028] A support rod 13 is sleeved on the surface of the rotating rod 12. A valve body 14 is fixedly installed on one side of the bottom of the support rod 13 by bolts. The valve body 14 is designed to maintain the unidirectional flow of the medium.

[0029] Both ends of the rotating rod 12 are fitted with springs 15, and the other end of the springs 15 is fitted with a protective shell 16. The protective shell 16 serves to protect and support the springs 15.

[0030] One end of the support spring 402 is fixedly connected to a positioning ring 17, which is sleeved on the inner wall of the fixed ring 3. The positioning ring 17 serves to provide a fixed support.

[0031] The piston 802 is fitted with a sealing ring 18, and the positioning plate 7 has two sets of through holes on its surface. The through holes facilitate the passage of the medium.

[0032] In this invention, the working steps of the device are as follows:

[0033] First step: During use, the medium on one side of the valve body 1 squeezes the valve body 14, causing the support rod 13 on the valve body 14 to drive the rotating rod 12 to rotate on the limiting plate 11. Then the valve body 14 rotates and squeezes the sliding ring 401, causing the sliding ring 401 to slide in the fixed ring 3 and squeeze the support spring 402. Then the positioning rod 403 slides on one side of the sliding ring 401, and the support spring 402 deforms under force to generate elastic force.

[0034] Second step: When the pressure on one side of the valve body 14 is too high during use, the medium passes through the through hole on the positioning plate 7 at the top of the valve body 1 and enters the discharge pipe 6, and then continues to squeeze the piston 802 along the discharge pipe 6, causing the telescopic spring 803 to deform under force.

[0035] The third step is to slide the piston 802 into the cavity in the discharge pipe 6, and the medium is discharged from the gap between the piston 802 and the discharge pipe 6. After the pressure is discharged, the extension spring 803 pulls the piston 802 to contract in order to restore its deformation.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum check valve device for a filter, comprising a valve body (1), characterized in that: Both sides of the valve body (1) are fixedly connected to connecting pipes (2). A fixing ring (3) is sleeved inside one set of the connecting pipes (2). A buffer assembly (4) is slidably connected inside the fixing ring (3). A top cover (5) is fixedly installed on the top of the valve body (1) by bolts. A discharge pipe (6) is connected through the top of the top cover (5). A positioning piece (7) is sleeved inside the discharge pipe (6). A telescopic assembly (8) is slidably connected inside the positioning piece (7). The buffer assembly (4) The component includes a sliding ring (401) slidably connected inside the fixed ring (3), and a number of support springs (402) are fixedly connected in a ring array on one side of the sliding ring (401). A positioning rod (403) is sleeved inside the support spring (402). The telescopic component (8) includes a sliding rod (801) slidably connected inside the positioning piece (7), and a piston (802) is fixedly connected to one end of the sliding rod (801). A telescopic spring (803) is fixedly connected to the bottom of the piston (802).

2. The vacuum check valve device for a filter according to claim 1, characterized in that: A limiting ring (9) is sleeved on the top of the valve body (1), and a fixing block (10) is fixedly connected to the inner wall of the limiting ring (9).

3. A vacuum check valve device for a filter according to claim 2, characterized in that: Two sets of limiting plates (11) are fixedly connected to one side of the fixed block (10), and a rotating rod (12) is rotatably connected inside the limiting plate (11).

4. A vacuum check valve device for a filter according to claim 3, characterized in that: A support rod (13) is sleeved on the surface of the rotating rod (12), and a valve body (14) is fixedly installed on one side of the bottom of the support rod (13) by bolts.

5. A vacuum check valve device for a filter according to claim 3, characterized in that: Both ends of the rotating rod (12) are fitted with springs (15), and the other end of the springs (15) is fitted with a protective shell (16).

6. A vacuum check valve device for a filter according to claim 1, characterized in that: One end of the support spring (402) is fixedly connected to a positioning ring (17), which is sleeved on the inner wall of the fixing ring (3).

7. A vacuum check valve device for a filter according to claim 1, characterized in that: The piston (802) is fitted with a sealing ring (18), and the positioning piece (7) has two sets of through holes on its surface.

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