Anti-blocking one-way valve

Abstract

The utility model discloses an anti-blocking one-way valve which comprises a valve body, a one-way control assembly is arranged at the upper end of the interior of the valve body, an anti-blocking mechanism is arranged at the lower end of the interior of the valve body, and a communication assembly used for balancing hydraulic pressure at the upper end and the lower end of the interior of the valve body is arranged on the outer wall of the valve body. The one-way valve filter screen is simple in structure and reasonable in design, the effect of rapid backwashing of the filter screen is achieved, if only coagulum of working liquid is attached to meshes, the coagulum can be scattered by directly conducting backwashing once, smoothness of the one-way valve is recovered, compared with traditional cleaning of the one-way valve filter screen, the process is more simplified, the later maintenance cost is reduced, and the cleaning efficiency is improved. The maintenance efficiency and the operation efficiency of the whole system are improved, meanwhile, when the pressing block moves downwards, liquid above the valve body can be rapidly guided to the lower portion, the whole process can be synchronously controlled through the electromagnet ring, additional driving equipment does not need to be added, and the production cost of the one-way valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve equipment, in particular to an anti-blocking one-way valve. Background Art

[0002] In industrial fluid systems, a check valve is a key component used to ensure that the fluid flows in only one direction and prevent the fluid in the system from flowing in the opposite direction or backflowing. With the development of industrial applications, especially in situations where high fluid purity is required, check valves have begun to integrate filtering functions. The original intention of this design is to prevent liquid condensate and particulate impurities mixed in the liquid from passing through the check valve to protect the back-end equipment or the entire system from damage.

[0003] Deficiencies of existing technology:

[0004] At present, the filtering function of most one-way valves is mainly achieved by installing a filter at the liquid inlet end of the valve. This design is simple and direct, but in actual applications, the filter is easily blocked due to the adhesion of condensate in the liquid or the blocking of the mesh by too many particulate impurities. Once the filter is blocked, it will not only reduce the liquid output of the one-way valve, but may even cause the valve to stop working completely. At this time, staff are generally required to intervene quickly. The staff needs to remove the liquid inlet pipe at the lower end of the valve body and use a brush or other special tools to clean and wash the lower end of the filter to restore the smoothness of the valve body. However, no matter what the reason for the blockage, due to the lack of effective self-cleaning or backwashing mechanism in the existing technology, the subsequent maintenance and cleaning process is relatively complicated, which not only increases the maintenance cost, but also affects the operating efficiency of the entire system. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-blocking one-way valve to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-blocking one-way valve, comprising a valve body, a one-way control component is arranged at the upper end of the inner part of the valve body, an anti-blocking mechanism is arranged at the lower end of the inner part of the valve body, and a connecting component for balancing the hydraulic pressure between the upper and lower ends of the inner part of the valve body is arranged on the outer wall of the valve body;

[0007] The anti-blocking mechanism comprises:

[0008] A filter screen, the filter screen being arranged on the inner wall of the lower end of the valve body;

[0009] A first mounting plate, the first mounting plate is arranged on the inner wall of the lower end of the valve body and above the filter screen, a guide rod is arranged on the upper end surface of the first mounting plate, and a pressure block is slidably connected to the guide rod;

[0010] A guide ring, the guide ring is arranged on the upper end surface of the first mounting plate, a return spring is movably arranged on the outer wall of the guide rod, and the return spring is connected between the upper end surface of the first mounting plate and the lower end surface of the pressing block;

[0011] The electromagnet ring is arranged on the inner wall of the valve body, the electromagnet ring is located above the pressure block, and a permanent magnet ring matching the electromagnet ring is arranged inside the pressure block by opening a cavity.

[0012] Preferably, the connectivity component includes:

[0013] A liquid inlet hole, the liquid inlet hole is arranged on the valve wall of the valve body and located on one side of the one-way control component, and a liquid outlet hole is arranged on the valve wall of the valve body and located below the one-way control component;

[0014] A conduit, wherein the conduit is arranged on the outer wall of the valve body, and two ends of the conduit are respectively connected to the liquid inlet and the liquid outlet;

[0015] A sliding groove, the sliding groove is formed on the inner wall of the liquid outlet hole, and a sealing plate for sealing the liquid outlet hole is slidably connected in the sliding groove;

[0016] A liquid through hole, the liquid through hole being opened through the lower end of the sealing plate;

[0017] A permanent magnet block is arranged at the lower end of the sealing plate, and the permanent magnet block matches the electromagnet ring.

[0018] Preferably, the one-way control component includes:

[0019] A second mounting plate, wherein the second mounting plate is arranged on the inner wall of the upper end of the valve body, a control spring is arranged on the lower end surface of the second mounting plate, and a valve core is connected to the lower end of the control spring;

[0020] A sealing ring is arranged on the inner wall of the valve body and below the second mounting plate.

[0021] Preferably, a limit plate is provided at the upper end of the guide rod.

[0022] Preferably, the outer diameter of the pressing block matches the inner diameter of the guide ring.

[0023] Preferably, an insulating layer is provided on the outer side of the electromagnet ring.

[0024] Preferably, through holes are provided on both the first mounting plate and the second mounting plate to ensure liquid circulation.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The anti-blocking one-way valve is provided with an anti-blocking mechanism, which includes a filter screen, a first mounting plate, a guide rod, a pressure block, a guide ring, a reset spring, an electromagnet ring and a permanent magnet ring, so as to achieve the effect of fast backwashing for the filter screen. If only the condensate of the working liquid is attached to the mesh, the condensate can be directly dispersed by backwashing once to restore the unobstructed state of the one-way valve. If the blockage is caused by the granular impurities in the liquid blocking the mesh, the granular impurities on the filter screen can be flushed away and discharged from the valve body by backwashing once after the liquid inlet pipe is removed. Compared with the traditional one-way valve filter screen cleaning, the process is more simplified, the later maintenance cost is reduced, and the maintenance efficiency and the operation efficiency of the whole system are improved.

[0027] The anti-blocking one-way valve is provided with a connecting component, which includes a liquid inlet, a liquid outlet, a conduit, a sliding groove, a sealing plate, a liquid through hole and a permanent magnet block. When the pressure block moves downward, the liquid above the valve body can be quickly introduced to the bottom, thereby ensuring the normal operation of the anti-blocking mechanism. The whole process can be synchronously controlled by the electromagnet ring without adding additional driving equipment, thereby reducing the production cost of the one-way valve and further improving the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the overall front view of the utility model;

[0029] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0030] Figure 3 It is a working schematic diagram of the anti-blocking mechanism and the connecting component of the utility model;

[0031] Figure 4 For the utility model Figure 2 A magnified schematic diagram at point A in FIG.

[0032] In the figure: 1. valve body; 2. control component; 201. second mounting plate; 202. control spring; 203. valve core; 204. sealing ring; 3. anti-blocking mechanism; 301. filter screen; 302. first mounting plate; 303. guide rod; 3031. limit plate; 304. pressure block; 305. guide ring; 306. reset spring; 307. electromagnet ring; 3071. insulating layer; 308. permanent magnet ring; 4. connecting component; 401. liquid inlet hole; 402. liquid outlet hole; 403. conduit; 404. sliding groove; 405. sealing plate; 406. liquid through hole; 407. permanent magnet block. Implementation

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0037] See also Figure 1-4As shown, the utility model provides a technical solution for an anti-blocking one-way valve: an anti-blocking one-way valve, comprising a valve body 1, a one-way control component 2 is installed at the upper end of the valve body 1, an anti-blocking mechanism 3 is installed at the lower end of the valve body 1, and a connecting component 4 for balancing the hydraulic pressure between the upper and lower ends of the valve body 1 is installed on the outer wall of the valve body 1;The anti-blocking mechanism 3 includes a filter screen 301, a first mounting plate 302, a guide ring 305 and an electromagnet ring 307. The filter screen 301 is fixedly mounted on the inner wall of the lower end of the valve body 1. The first mounting plate 302 is fixedly mounted on the inner wall of the lower end of the valve body 1 and is located above the filter screen 301. A guide rod 303 is mounted on the upper end surface of the first mounting plate 302. A pressure block 304 is slidably connected to the guide rod 303. The guide ring 305 is fixedly mounted on the upper end surface of the first mounting plate 302. A return spring 306 is movably mounted on the outer wall of the guide rod 303. The return spring 306 is connected between the upper end surface of the first mounting plate 302 and the lower end surface of the pressure block 304. The electromagnet ring 307 is mounted on the inner wall of the valve body 1. 7 is located above the pressing block 304. The interior of the pressing block 304 is provided with a permanent magnet ring 308 matching the electromagnet ring 307 by opening a cavity. When the one-way valve is operating normally, the liquid flows into the valve body 1 after being filtered through the filter screen 301 below. If the flow of the valve body 1 is reduced and the filter screen 301 is not flowing smoothly, the electromagnet ring 307 is energized by an external controller or a staff member. After the electromagnet ring 307 is energized, the connecting component 4 is connected. At the same time, the permanent magnet ring 308 is subjected to the repulsive force of the electromagnet ring 307 and drives the pressing block 304 to overcome the elastic force of the return spring 306 and slide downward along the guide rod 303. During the downward sliding process of the pressing block 304, it enters the guide ring 305 and pushes the liquid inside the guide ring 305. The valve body 1 is pushed downward, forcing a part of the liquid under the valve body 1 to penetrate the filter screen 301, breaking and removing the condensate attached to the mesh of the filter screen 301. When the pressure block 304 moves down to the lowest point, the current direction of the electromagnet ring 307 is changed. The pressure block 304 quickly rises along the guide rod 303 under the action of the return spring 306 and the electromagnet ring 307, and the connecting component 4 is also closed. At this time, the function of the one-way valve is restored and it can continue to work. If the blockage phenomenon occurs soon after the restoration of work, it means that the blockage is not the condensate of the liquid but some hard particle impurities. At this time, the liquid inlet pipe connected to the lower end of the valve body 1 can be removed to expose the filter screen 301 to the air, and the electromagnet ring 307 is energized again to drive the pressure block 304 to move. At this time, part of the liquid under the valve body 1 will pass through the filter screen 301 again, flushing the hard particle impurities blocking the mesh of the filter screen 301 and discharging them from the lower end of the valve body 1. Through the anti-blocking mechanism 3, the effect of quickly backwashing the filter screen 301 is achieved. If only the condensate of the working liquid is attached to the mesh, a direct backwashing can disperse the condensate and restore the unobstructed flow of the one-way valve. If the blockage is caused by the particle impurities in the liquid blocking the mesh, a backwashing after removing the liquid inlet pipe can also flush the particle impurities on the filter screen 301 and discharge them from the valve body 1. Compared with the traditional one-way valve filter screen 301 cleaning, the process is more simplified, the later maintenance cost is reduced, and the maintenance efficiency and the operation efficiency of the entire system are improved. ;

[0038] The connecting component 4 includes a liquid inlet hole 401, a conduit 403, a sliding groove 404, a liquid through hole 406 and a permanent magnet block 407. The liquid inlet hole 401 is provided on the valve wall of the valve body 1 and is located on one side of the one-way control component 2. A liquid outlet hole 402 is provided on the valve wall of the valve body 1 and is located below the one-way control component 2. The conduit 403 is installed on the outer wall of the valve body 1. Both ends of the conduit 403 are connected to the liquid inlet hole 401 and the liquid outlet hole 402 respectively. The sliding groove 404 is provided on the inner wall of the liquid outlet hole 402. A sealing plate 405 for sealing the liquid outlet hole 402 is slidably connected in the sliding groove 404. The liquid through hole 406 is provided through the lower end of the sealing plate 405. The permanent magnet block 407 is installed in the cavity at the lower end of the sealing plate 405. The permanent magnet block 407 is connected to the electromagnet ring 30 7, when the electromagnet ring 307 is energized, the permanent magnet block 407 is driven by the repulsive force to drive the sealing plate 405 to rise in the sliding groove 404 until the liquid through hole 406 is located in the liquid outlet hole 402. At this time, the liquid above the one-way control component 2 can flow back to the lower end of the one-way valve body 1 through the conduit 403, so that the internal hydraulic pressure of the valve body 1 remains self-balanced, and the pressing block 304 can move downward smoothly to discharge the fluid at the lower end of the valve body 1. Through the connecting component 4, when the pressing block 304 moves downward, the liquid above the valve body 1 can be quickly introduced to the bottom, thereby ensuring the normal operation of the anti-blocking mechanism 3, and the whole process can be synchronously controlled by the electromagnet ring 307 without adding additional driving equipment, thereby reducing the production cost of the one-way valve and further improving the maintenance efficiency.

[0039] The one-way control component 2 includes a second mounting plate 201 and a sealing ring 204. The second mounting plate 201 is fixedly mounted on the inner wall of the upper end of the valve body 1. A control spring 202 is connected to the lower end surface of the second mounting plate 201. The lower end of the control spring 202 is connected to a valve core 203. The sealing ring 204 is fixedly mounted on the inner wall of the valve body 1 and is located below the second mounting plate 201. When the valve body 1 works normally, the fluid enters from the lower end of the valve body 1 through the liquid inlet pipe, passes through the filter screen 301 and the first mounting plate 302, passes through the sealing ring 204, and then the valve core 203 is pushed open by a certain hydraulic pressure, and finally passes through the second mounting plate 201 and is discharged from the upper end of the valve body 1.

[0040] A limit plate 3031 is installed at the upper end of the guide rod 303, and the limit plate 3031 can prevent the pressing block 304 from excessively moving upward to block the electromagnet ring 307 or the upper end of the movable guide rod 303 from falling off.

[0041] The outer diameter of the pressing block 304 matches the inner diameter of the guide ring 305 . The pressing block 304 and the guide ring 305 can ensure mutual sealing and meet the sliding requirements of the pressing block 304 in the guide ring 305 through reasonable matching of the inner and outer diameters.

[0042] An insulating layer 3071 is provided on the outer side of the electromagnet ring 307 , and the insulating layer 3071 can prevent the current from being introduced into the liquid and onto the valve body 1 when the electromagnet ring 307 is powered on.

[0043] Through holes are provided on the first mounting plate 302 and the second mounting plate 201 to ensure liquid circulation.

[0044] The working principle of the utility model is as follows:

[0045] When the anti-blocking one-way valve of the present embodiment is in use, the liquid flows into the valve body 1 after being filtered through the filter screen 301 below. If the flow rate of the valve body 1 decreases and the filter screen 301 has poor circulation, the external controller or the staff manually controls the electromagnet ring 307 to be energized. After the electromagnet ring 307 is energized, the permanent magnet block 407 is driven by the repulsive force to drive the sealing plate 405 to rise in the sliding groove 404 until the liquid through hole 406 is located in the liquid outlet hole 402. At this time, the conduit 403 connects the upper and lower ends of the valve body 1. Subsequently, the permanent magnet ring 308 is driven by the repulsive force of the electromagnet ring 307 to drive the pressing block 304 to overcome the elastic force of the return spring 306 and slide downward along the guide rod 303. The liquid above the sealing ring 204 can flow back to the one-way valve through the conduit 403. The lower end of the valve body 1 makes the internal hydraulic pressure of the valve body 1 maintain self-balance. During the downward sliding process of the pressure block 304, it will enter the guide ring 305 and push the liquid inside the guide ring 305 downward, forcing a part of the liquid below the valve body 1 to penetrate the filter 301, and the condensate attached to the mesh of the filter 301 will be broken and removed. When the pressure block 304 moves down to the lowest point, the current direction on the electromagnet ring 307 is changed manually by an external controller or a staff member. The pressure block 304 quickly rises along the guide rod 303 under the action of the return spring 306 and the electromagnet ring 307, and the sealing plate 405 also quickly falls back in the sliding groove 404 to re-block the liquid outlet 402. At this time, the function of the one-way valve is restored and it can continue to work. If the work is restored, Soon the blockage phenomenon reappears, indicating that the blockage is not the condensation of the liquid but some hard granular impurities. At this time, the liquid inlet pipe connected to the lower end of the valve body 1 can be removed to expose the filter screen 301 to the air, and the electromagnetic ring 307 is energized again to open the connecting component 4 and drive the pressing block 304 to move. At this time, a part of the liquid under the valve body 1 will pass through the filter screen 301 again, flushing the hard granular impurities blocking the mesh of the filter screen 301 and discharging them from the lower end of the valve body 1. Finally, the liquid inlet pipe is installed back under the valve body 1, and the one-way valve can resume normal operation. The utility model has a simple structure and a reasonable design. Through the anti-blocking mechanism 3, the effect of quickly backwashing the filter screen 301 is achieved. If only the condensation of the working liquid is attached to the mesh, a direct backwash is performed. Flushing can disperse the condensate and restore the smoothness of the one-way valve. If the blockage is caused by particulate impurities in the liquid blocking the mesh, backwashing after removing the liquid inlet pipe can also flush the particulate impurities on the filter 301 and discharge them from the valve body 1. Compared with the traditional one-way valve filter 301 cleaning, the process is simpler, the subsequent maintenance cost is reduced, the maintenance efficiency and the operating efficiency of the entire system are improved, and at the same time, through the connecting component 4, when the pressure block 304 moves downward, the liquid above the valve body 1 can be quickly introduced to the bottom, ensuring the normal operation of the anti-blocking mechanism 3, and the whole process can be synchronously controlled by the electromagnet ring 307 without adding additional driving equipment, thereby reducing the production cost of the one-way valve and further improving the maintenance efficiency.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-blocking one-way valve, comprising a valve body (1), characterized in that: A one-way control component (2) is arranged at the upper end of the valve body (1), an anti-blocking mechanism (3) is arranged at the lower end of the valve body (1), and a connecting component (4) for balancing the hydraulic pressure at the upper and lower ends of the valve body (1) is arranged on the outer wall of the valve body (1); The anti-blocking mechanism (3) comprises: A filter screen (301), wherein the filter screen (301) is arranged on the inner wall of the lower end of the valve body (1); a first mounting plate (302), the first mounting plate (302) being arranged on the inner wall of the lower end of the valve body (1) and above the filter screen (301), a guide rod (303) being arranged on the upper end surface of the first mounting plate (302), a pressure block (304) being slidably connected to the guide rod (303); A guide ring (305), the guide ring (305) being arranged on the upper end surface of the first mounting plate (302), a return spring (306) being movably arranged on the outer wall of the guide rod (303), the return spring (306) being connected between the upper end surface of the first mounting plate (302) and the lower end surface of the pressing block (304); An electromagnet ring (307) is arranged on the inner wall of the valve body (1), the electromagnet ring (307) is located above the pressing block (304), and a permanent magnet ring (308) matching the electromagnet ring (307) is arranged inside the pressing block (304) by opening a cavity.

2. The anti-blocking one-way valve according to claim 1, characterized in that: The connectivity component (4) comprises: A liquid inlet hole (401), the liquid inlet hole (401) being arranged on the valve wall of the valve body (1) at one side of the one-way control component (2), and a liquid outlet hole (402) being arranged on the valve wall of the valve body (1) below the one-way control component (2); A conduit (403), the conduit (403) being arranged on the outer wall of the valve body (1), and the two ends of the conduit (403) being respectively connected to the liquid inlet (401) and the liquid outlet (402); A sliding groove (404), the sliding groove (404) being formed on the inner wall of the liquid outlet hole (402), and a sealing plate (405) for sealing the liquid outlet hole (402) being slidably connected in the sliding groove (404); A liquid through hole (406), the liquid through hole (406) being formed through the lower end of the sealing plate (405); A permanent magnet block (407) is arranged at the lower end of the sealing plate (405), and the permanent magnet block (407) matches the electromagnet ring (307).

3. The anti-blocking one-way valve according to claim 1, characterized in that: The one-way control component (2) comprises: A second mounting plate (201), the second mounting plate (201) being arranged on the inner wall of the upper end of the valve body (1), a control spring (202) being arranged on the lower end surface of the second mounting plate (201), and a valve core (203) being connected to the lower end of the control spring (202); A sealing ring (204), wherein the sealing ring (204) is arranged on the inner wall of the valve body (1) and is located below the second mounting plate (201).

4. The anti-blocking one-way valve according to claim 1, characterized in that: A limiting plate (3031) is provided at the upper end of the guide rod (303).

5. The anti-blocking one-way valve according to claim 1, characterized in that: The outer diameter of the pressing block (304) matches the inner diameter of the guide ring (305).

6. The anti-blocking one-way valve according to claim 1, characterized in that: An insulating layer (3071) is provided on the outer side of the electromagnet ring (307).

7. The anti-blocking one-way valve according to claim 3, characterized in that: Through holes are provided on both the first mounting plate (302) and the second mounting plate (201) to ensure liquid circulation.

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