High-sensitivity quick-response overflow valve

Abstract

The utility model discloses a high-sensitivity quick response overflow valve, which relates to the technical field of overflow valves and comprises a valve body and an adjusting component rotatably connected with the top of the valve body, a liquid inlet is arranged on one side of the bottom end of the valve body, a liquid outlet is arranged on the other side of the valve body, and a filter component is mounted on one side of the liquid inlet. By means of the double filtering design of the filter element and the detachable filter plate, particle impurities in liquid are effectively blocked, blocking or abrasion of components in the valve body is avoided, and smooth operation of the components is guaranteed. Meanwhile, the filter plate is convenient to disassemble and replace, the main valve body does not need to be greatly disassembled, the maintenance efficiency and the operation safety are greatly improved, the quick response capability and the operation stability are enhanced, the service life of equipment is remarkably prolonged, and high sensitivity and reliability of a fluid control system in long-term operation are ensured.

Description

Technical Field

[0001] This utility model relates to the field of overflow valve technology, and in particular to a high-sensitivity, fast-response overflow valve. Background Technology

[0002] The safety relief valve plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve opens, releasing a portion of the gas in the system into the atmosphere, ensuring that the system pressure does not exceed the allowable value, thereby preventing accidents caused by excessive pressure.

[0003] For example, CN208503132U discloses an overflow valve, which includes an overflow valve body, an overflow inlet and an overflow outlet provided on the overflow valve body, an overflow valve core, an overflow valve spring, and an overflow piston provided in the overflow valve body. One end of the overflow valve core is connected to the overflow valve spring, and the other end of the overflow valve core is connected to the overflow piston. The overflow valve core seals the passage between the overflow inlet and the overflow outlet. When the oil pressure in the oil inlet is greater than a certain value, it squeezes the overflow valve core and opens the passage between the overflow inlet and the overflow outlet. As the overflow valve core gradually opens the passage between the overflow inlet and the overflow outlet, the overflow piston gradually seals the overflow inlet.

[0004] However, in the existing technology, impurities can block the valve core movement channel of the relief valve, preventing the valve core from moving in time when subjected to pressure changes. When the system pressure rises to the set value of the relief valve, the valve core cannot open quickly due to the obstruction of impurities, resulting in the relief valve not overflowing in time. The system pressure will continue to rise, and overflow will only begin after exceeding the set value by a large margin. This prolongs the response time of the relief valve and reduces its ability to respond quickly to pressure changes. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that impurities can block the valve core movement channel of the relief valve, preventing the valve core from moving in time when subjected to pressure changes, and proposes a high-sensitivity, fast-response relief valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-sensitivity, fast-response overflow valve, including a valve body and an adjustment assembly rotatably connected to its top, an inlet port on one side of the bottom end of the valve body, and an outlet port on the other side of the valve body, with a filter assembly installed on one side of the inlet port;

[0007] The filter assembly includes a retaining ring, the sidewall of which is fixedly connected to the outer edge of the liquid inlet, and multiple threaded rods are fixedly connected to the outer surface of the top of the retaining ring. A filter plate is inserted into the surface of the threaded rods, and an mounting ring is snapped into one side of the filter plate. The mounting ring is slidably connected to the threaded rods. Nuts are threaded to the outer surfaces of both ends of the threaded rods. A filter element is fixedly connected to the center of the inner side of the filter plate.

[0008] Preferably, the valve body inner cavity bottom end is provided with a second overflow groove, and the valve body inner cavity top end is provided with a first overflow groove.

[0009] Preferably, the valve body inner cavity bottom end is provided with a first valve core, and the first valve core top end is fixedly connected with a blocking block.

[0010] Preferably, the blocking block top end is fixedly connected with a second valve core, and the second valve core top end is abutted with a spring.

[0011] Preferably, the first valve core width is greater than the second overflow groove inner diameter.

[0012] Preferably, the blocking block is located in the first overflow groove inner side, and the first overflow groove and the second overflow groove are provided with a liquid inlet.

[0013] Preferably, the liquid inlet inner diameter is same with the blocking block outer diameter.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that:

[0015] 1、 in the utility model, through the double filtration design of filter core and detachable filter plate, effectively block the particle impurity in liquid, avoid to cause the blockage or abrasion to the internal components of valve body, guarantee its smooth operation. Meanwhile, the filter plate is convenient to detach and replace, need not dismantle main valve body greatly, greatly improved maintenance efficiency and operation safety, strengthened quick response ability and operation stability, prolonged equipment service life significantly, ensured that fluid control system in long -term operation high sensitivity and reliable performance;

[0016] 2、 in the utility model, through the linkage cooperation of blocking block and second valve core, realized the dynamic response adjustment to the internal pressure of valve body, the elastic potential energy is stored under the up -moving process under the fluid push and controls the overflow starting threshold value, forms the stable overflow path, and after the pressure drops, the rebound of spring ensures that the blocking block resets in time, terminates overflow, guarantees system safety, and the adjusting assembly can adjust spring pre-tightening force, flexibly sets overflow pressure upper limit, so that the system can adapt to the pressure control demand under different working conditions. ACCURACY

[0017] Figure 1 The utility model proposes the whole three-dimensional structure schematic diagram of high sensitivity quick response overflow valve;

[0018] Figure 2 The utility model proposes the three-dimensional structure schematic diagram of filter assembly in high sensitivity quick response overflow valve;

[0019] Figure 3 The utility model proposes the sectional structure schematic diagram of high sensitivity quick response overflow valve;

[0020] Figure 4The utility model provides high sensitivity quick response overflow valve's sectional stereogram structure schematic diagram.

[0021] Legend: 1, valve body; 11, first valve core; 12, blocking piece; 13, second valve core; 14, spring; 15, first overflow groove; 16, second overflow groove; 17, liquid inlet; 18, liquid outlet; 2, filter assembly; 21, fixed ring; 22, threaded rod; 23, filter plate; 24, filter core; 25, mounting ring; 26, nut; 3, adjusting assembly. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples.It should be noted that the examples and features in the examples of the present application can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific examples disclosed in the following disclosure.

[0024] Example one: as shown in Figure 1 And Figure 2 The utility model provides high sensitivity quick response overflow valve, including valve body 1 and its top rotationally connected adjusting assembly 3, the valve body 1 bottom end one side is set up liquid inlet 17, and the valve body 1 other side is set up liquid outlet 18, and the liquid inlet 17 one side is installed filter assembly 2;

[0025] Filter assembly 2 includes fixed ring 21, and the lateral wall of fixed ring 21 is fixedly connected with the outer edge of liquid inlet 17, and a plurality of threaded rods 22 are fixedly connected with the outer surface of the top end of fixed ring 21, the filter plate 23 is inserted on the surface of threaded rod 22, the mounting ring 25 is connected with the side of filter plate 23, and the mounting ring 25 is slidably connected with the threaded rod 22, and the nut 26 is threadedly connected with the outer surface of both ends of threaded rod 22, and the filter core 24 is fixedly connected with the inner side of filter plate 23.

[0026] The specific settings and effects of the present embodiment will be described below, the liquid inlet 17 can make the fluid quickly enter the inside of valve body 1, and the filter core 24 set in the front end of the liquid inlet channel can be used to carry out preliminary filtration treatment before the fluid enters. The setting of filter core 24 can effectively block the particulate impurities carried in the liquid, avoid the blockage or abnormal wear of blocking piece 12 and second valve core 13 caused by these impurities entering the inside of valve body 1, so as to guarantee the smooth operation of the inside components of valve body 1, improve the quick response ability and working stability of the whole system, and prolong the service life of the equipment.

[0027] On the basis of the filter element 24 filtering, there is also a detachable filter plate 23. The user can rotate the disassembly nut 26 to remove the locking effect of the mounting ring 25, and then take out the mounting ring 25 from the assembly structure. After the mounting ring 25 loses the cooperation and locking effect with the fixed ring 21, the filter plate 23 can be slid out from the outer surface of the threaded rod 22, without the need to disassemble the main valve body 1 greatly, greatly improving the convenience of maintenance and the safety of operation. If the filter plate 23 is blocked or the filtering effect is reduced during use, the operator can quickly replace or clean it, effectively avoiding problems such as slow response of the valve body 1 or failure of the actuator due to reduced filtering effect, thereby continuously ensuring the high sensitivity and reliable performance of the fluid control system.

[0028] Embodiment two: as shown in Figure 3 and Figure 4 The bottom end of the inner cavity of the valve body 1 is provided with a second overflow groove 16, and the top end of the inner cavity of the valve body 1 is provided with a first overflow groove 15. The first valve element 11 is installed at the bottom end of the inner cavity of the valve body 1, and the top end of the first valve element 11 is fixedly connected with the blocking block 12. The top end of the blocking block 12 is fixedly connected with the second valve element 13, and the top end of the second valve element 13 abuts against the spring 14. The width of the first valve element 11 is greater than the inner diameter of the second overflow groove 16. The blocking block 12 is located inside the first overflow groove 15, and the first overflow groove 15 and the second overflow groove 16 are provided with a liquid inlet 17. The inner diameter of the liquid inlet 17 is the same as the outer diameter of the blocking block 12.

[0029] The effect achieved by the whole embodiment is that when responding, after the fluid enters the inside of the valve body 1 through the liquid inlet 17, a certain pressure is formed in the inside of the valve body 1, which pushes the blocking block 12 arranged in the valve body 1 to move upward. At this time, the blocking block 12 will slide axially in the channel of the first overflow groove 15. During the upward movement, the upper end surface of the blocking block 12 will contact the lower end surface of the second valve element 13 and form a force transmission relationship, thereby driving the second valve element 13 to move upward synchronously.

[0030] At the same time, the upper end of the second valve element 13 is in contact with the spring 14 during the upward pushing process, and the spring 14 is subjected to a squeezing action, so that the spring 14 is in a compressed state. This compressed state not only stores elastic energy, but also limits the continuous upward movement of the second valve element 13 to a certain extent, thereby achieving control of the upward movement amplitude of the blocking block 12.

[0031] During the sliding of the blocking block 12 in the first overflow groove 15, due to the existence of structural gap, a narrow flow channel is formed around it, so that part of the fluid can flow from the first overflow groove 15 to the liquid outlet 18, thereby realizing the overflow function. As the fluid is continuously discharged from the liquid outlet 18, the pressure in the inside of the valve body 1 is gradually reduced.

[0032] When the internal pressure falls below a certain threshold, the spring 14 begins to rebound under the action of its restoring force, gradually pushing the second spool 13 and the blocking block 12 to move downward. With the downward movement of the two, the blocking block 12 will reseal the first overflow groove 15, thereby stopping the further overflow of the fluid, achieving dynamic adjustment and automatic response control of the fluid pressure.

[0033] During this process, in order to adapt to the demand for overflow pressure in different working environments, the axial position of the adjusting assembly 3 can be changed by screwing it. The movement of the adjusting assembly 3 changes the pre-compression amount of the spring 14, thereby indirectly adjusting the elastic force exerted by the spring 14 on the second spool 13. By increasing the pre-tightening force, the upper limit of the overflow pressure allowed by the system can be increased, so that the valve body 1 system can still maintain normal sealing and control function in a higher pressure environment, thereby enhancing the stability and adaptability of the system and meeting the use requirements in various industrial working conditions.

[0034] The use method and working principle of the device: the fluid can enter the valve body 1 quickly through the liquid inlet 17. Before entering, the fluid can be preliminarily filtered by the filter element 24, so as to avoid impurities entering the valve body 1, causing the blocking block 12 and the second spool 13 to be blocked and worn, and thereby affecting the overall rapid response performance.

[0035] In order to ensure that the system has high response sensitivity, the mounting ring 25 can be disassembled by unscrewing the nut 26, so as to contact the compression and positioning part of the filter plate 23. After losing the cooperation and locking of the mounting ring 25 and the fixing ring 21, the filter plate 23 can be removed from the threaded rod 22, so as to be replaced, so as to protect the overall filtering effect.

[0036] During the response process, as the fluid enters the valve body 1 through the liquid inlet 17, the fluid pressure pushes the blocking block 12 to move upward. At this time, the blocking block 12 slides in the first overflow groove 15 and further pushes the second spool 13 to move upward. With the upward movement of the second spool 13, the spring 14 is extruded and compressed. At the same time, the blocking block 12 will form a gap when it slides in the first overflow groove 15, so that part of the fluid flows out from the liquid outlet 18 through the first overflow groove 15. As the fluid continues to flow out, the internal pressure of the system gradually decreases, and the spring 14 will slowly release the compression force, pushing the second spool 13 and the blocking block 12 to move downward, and finally achieving the blocking of the first overflow groove 15.

[0037] During this process, the position of the adjusting assembly 3 can be changed by rotating it, so as to adjust the elastic force exerted by the spring 14 on the second spool 13, thereby increasing the overflow pressure threshold of the system.

[0038] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A high sensitivity quick response overflow valve comprising a valve body (1) and a regulating assembly (3) rotatably connected to the top of the valve body (1), characterized in that: The valve body (1) is provided with a liquid inlet (17) on one side of the bottom end, and a liquid outlet (18) is provided on the other side of the valve body (1), and the filter assembly (2) is installed on one side of the liquid inlet (17); The filter assembly (2) comprises a fixed ring (21), the side wall of the fixed ring (21) is fixedly connected with the outer edge of the liquid inlet (17), a plurality of threaded rods (22) are fixedly connected to the outer surface of the top end of the fixed ring (21), the filter plate (23) is inserted into the surface of the threaded rod (22), the mounting ring (25) is connected with the threaded rod (22) and the threaded rod (22) is slidably connected with the threaded rod (22), the nut (26) is threadedly connected to the outer surface of both ends of the threaded rod (22), and the filter plate (23) is fixedly connected with the filter core (24) on the inner side of the center.

2. The high sensitivity, fast responding spill valve of claim 1, wherein: The valve body (1) is provided with a second overflow groove (16) at the bottom end of the inner cavity, and a first overflow groove (15) is provided at the top end of the inner cavity of the valve body (1).

3. The high sensitivity, fast responding spill valve of claim 1, wherein: The first valve core (11) is installed at the bottom end of the inner cavity of the valve body (1), and the first valve core (11) is fixedly connected with the sealing block (12) at the top end.

4. The high sensitivity, fast responding spill valve of claim 3, wherein: The second valve core (13) is fixedly connected to the top end of the sealing block (12), and the spring (14) is abutted to the top end of the second valve core (13).

5. The high sensitivity, fast responding spill valve of claim 3, wherein: The width of the first valve core (11) is greater than the inner diameter of the second overflow groove (16).

6. The high sensitivity, fast responding spill valve of claim 3, wherein: The sealing block (12) is located on the inner side of the first overflow groove (15), and the liquid inlet (17) is provided between the first overflow groove (15) and the second overflow groove (16).

7. The high sensitivity, fast responding spill valve of claim 6, wherein: The inner diameter of the liquid inlet (17) is the same as the outer diameter of the sealing block (12).

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