Pressure release valve assembly

Abstract

The utility model provides a pressure release valve assembly which is characterized in that a pressure release channel is formed in the center of one end of a plastic connecting piece, a cylindrical plug is placed on the side, located on the pressure release channel, of the plastic connecting piece, and a supporting springback connecting piece is arranged on the side, away from the plastic connecting piece, of the cylindrical plug in a sleeving mode; one side of the spring connecting piece is arranged on the plastic connecting piece in a sleeving mode, and the other side of the spring connecting piece is arranged on the supporting springback connecting piece in a sleeving mode. In actual use, the pressure of liquid in the pressure relief channel in the plastic connecting piece exceeds the stretching force of spring connection, and the cylindrical plug is jacked up for pressure relief, so that the supporting springback connecting piece temporarily moves in the direction away from one side of the plastic connecting piece; when the pressure in the pressure relief channel is equal to or smaller than the tensile force of the spring connecting piece, the spring connecting piece can quickly return the supporting springback connecting piece, the function of adjusting the pressure in the air outlet channel is achieved, finally, if the assembly exceeds the specified service life, the spring connecting piece loses efficacy, and the like, the assembly can be maintained by disassembling and replacing accessories. The maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the field of pressure relief valves, in particular to the technical field of replacing throttlers, and specifically provides a pressure relief valve assembly. Background Art

[0002] In the existing pressure relief valve assembly, the throttler needs to be screwed into the plastic part through special equipment, and the assembly cost is relatively high. Moreover, there are thread gaps in the screwed-in part, which may cause unstable airtightness.

[0003] The throttler needs to communicate with the air outlet channel in the plastic part. The structure of the throttler is similar to a "one-way valve" to automatically relieve pressure when the air pressure in the pressure relief channel reaches a certain level. The throttler is almost an integral structure. When problems occur, it cannot be repaired and can only be returned to the factory for replacement, resulting in a relatively high maintenance cost for the overall assembly.

[0004] It is necessary to design a pressure relief valve assembly that does not rely on a throttler to regulate the pressure in the air outlet channel. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a pressure relief valve assembly to solve the difficulties of the prior art.

[0006] To achieve the above purpose and other related purposes, the present utility model provides a pressure relief valve assembly, including:

[0007] A plastic connector 1, with a pressure relief valve inner cavity 11 in the center of the plastic connector 1. One end of the plastic connector 1 is provided with a pressure relief channel 12 in the center, and the bottom of the pressure relief channel 12 communicates with the pressure relief valve inner cavity 11.

[0008] A cylindrical plug 2, placed on one side of the plastic connector 1 where the pressure relief channel 12 is located. The top of the cylindrical plug 2 abuts against the plastic connector 1 to block the pressure relief channel 12.

[0009] A support and rebound connector 3, sleeved on the side of the cylindrical plug 2 away from the plastic connector 1.

[0010] A spring connector 4, with one side sleeved on the plastic connector 1 and the other side sleeved on the support and rebound connector 3.

[0011] Further, the spring member connects the plastic connector 1 and the support and rebound connector 3, and locks the cylindrical plug 2 between the connection of the plastic connector 1 and the support and rebound connector 3.

[0012] In this technical solution, when the pressure in the pressure relief channel 12 exceeds the tensile force of the spring connector 4, the cylindrical plug 2 is pushed up to relieve the pressure, causing the support rebound connector 3 to move briefly in the direction away from the plastic connector 1. When the pressure in the pressure relief channel 12 is equal to or less than the tensile force of the spring connector 4, the spring connector 4 quickly returns the support rebound connector 3 to its original position.

[0013] According to the preferred solution, a first external thread spring slot 13 is provided on the outer contour of the plastic connector 1 on the side close to the pressure relief channel 12.

[0014] According to the preferred solution, the support rebound connector 3 includes:

[0015] A second external thread spring slot 31, which is provided on the outer wall of the support rebound connector 3 on the side close to the plastic connector 1;

[0016] A sealing plug installation groove 32, which is provided in the center of the end of the support rebound connector 3 close to the plastic connector 1;

[0017] A demolding weight reduction process hole 33, which is provided in the center of the bottom of the sealing plug installation groove 32;

[0018] A support rod 34, which is provided on the side of the support rebound connector 3 away from the plastic connector 1, and the support rod 34 is a polygonal column.

[0019] Furthermore, the support rebound connector 3 is sleeved outside the cylindrical plug 2 through the sealing plug installation groove 32.

[0020] According to the preferred solution, the pressure relief channel 12 is in the shape of a round hole, and the inner diameter of the pressure relief channel 12 is smaller than the outer diameter of the cylindrical plug 2.

[0021] According to the preferred solution, the inner diameter of the sealing plug installation groove 32 is larger than the outer diameter of the cylindrical plug 2, and the difference between the inner diameter of the sealing plug installation groove 32 and the outer diameter of the cylindrical plug 2 is smaller than the inner diameter of the pressure relief channel 12.

[0022] In this technical solution, after the cylindrical plug 2 is pushed up and moves to any position coordinate in the sealing plug installation groove 32, it can block the pressure relief channel 12 when it returns to its original position.

[0023] According to the preferred solution, one side of the spring connector 4 is clamped in the first external thread spring slot 13 and the other side is clamped in the second external thread spring slot 31.

[0024] The utility model adopts plastic connectors, cylindrical plug heads, support and rebound connectors, and spring connectors. In actual use, when the pressure of the liquid in the pressure relief channel of the plastic connector exceeds the tensile force of the spring connection, the cylindrical plug head is pushed up to relieve pressure, causing the support and rebound connector to move briefly away from the plastic connector. When the pressure in the pressure relief channel is equal to or less than the tensile force of the spring connector, the spring connector quickly returns the support and rebound connector to its original position, realizing the function of adjusting the pressure in the air outlet channel. Finally, if problems such as the failure of the spring connector occur when the component exceeds the specified service life, it can also be repaired by disassembling and replacing the accessories, with low repair costs.

[0025] In the following text, the optimal embodiments of implementing the utility model will be described in more detail in conjunction with the drawings, so as to easily understand the features and advantages of the utility model. Brief Description of the Drawings

[0026] Figure 1 Showing a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 Showing an enlarged three-dimensional structural schematic diagram of the plastic connector in the utility model;

[0028] Figure 3 Showing an enlarged three-dimensional structural schematic diagram of the cylindrical plug head clamped in the sealing plug installation groove in the utility model;

[0029] Figure 4 Showing an enlarged three-dimensional structural schematic diagram of the support and rebound connector in the utility model;

[0030] Figure 5 Showing a middle-sectional schematic diagram of the utility model;

[0031] Figure 6 Showing a middle-sectional schematic diagram of the throttle in the technical background of the utility model;

[0032] Label Description

[0033] 1. Plastic connector;

[0034] 11. Pressure relief valve inner cavity;

[0035] 12. Pressure relief channel;

[0036] 13. First external thread spring slot;

[0037] 2. Cylindrical plug head;

[0038] 3. Support and rebound connector;

[0039] 31. Second external thread spring slot;

[0040] 32. Sealing plug installation groove;

[0041] 33. Demolding weight reduction process hole;

[0042] 34. Support rod;

[0043] 4. Spring connector; Specific implementation manners

[0044] In order to make the objectives, technical solutions and advantages of the technical solutions of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present utility model. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0045] Compared with the embodiments shown in the drawings, the feasible implementation solutions within the protection scope of the present utility model may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0046] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The "first", "second" and similar terms used in the specification and claims of the patent application of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "one" do not necessarily denote a quantity limitation. Words such as "comprising" or "including" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] The present utility model provides a pressure relief valve assembly, which is used in the design of the pressure relief valve assembly. The present utility model does not limit the type of the pressure relief valve, but in the requirement that the structure of the pressure relief valve assembly still enables the pressure relief valve assembly to have the automatic pressure relief ability when the throttle is removed in the component design.

[0048] Generally speaking, the pressure relief valve assembly proposed by the present utility model mainly includes: a plastic connector 1, a cylindrical plug 2, a support and rebound connector 3, and a spring connector 4. Among them, reference can be made to Figure 1 , which shows the arrangement relationship of the plastic connector 1, the cylindrical plug 2, the support and rebound connector 3, and the spring connector 4.

[0049] The present utility model provides a pressure relief valve assembly. During installation, the cylindrical plug 2 is stuck in the sealing plug installation groove 32 in the support and rebound connector 3. Then, the support and rebound connector 3 and the plastic connector 1 can be placed on an automated device to automatically complete the press-fitting of the spring connector 4, or manually insert the spring connector 4 into the second external thread spring slot 31 outside the support and rebound connector 3. Connect the plastic connector 1 and the spring connector 4 through a fixture such as a vise, so that the cylindrical plug 2 abuts against the pressure relief channel 12 of the plastic connector 1. Use tweezers to stretch the spring assembly so that the other side of the spring assembly is stuck in the first external thread spring slot 13 under a certain tensile force. The assembly process is simple and the cost is low. It should also be noted that during use, a hollow limiting sleeve can be sleeved outside the plastic connector 1 and the support and rebound connector 3 to prevent the spring connector 4 from derailing. In actual use, when the pressure of the liquid in the pressure relief channel 12 of the plastic connector 1 exceeds the tensile force of the spring connector 4, the cylindrical plug 2 is pushed up to relieve pressure, causing the support and rebound connector 3 to move briefly away from the plastic connector 1. When the pressure in the pressure relief channel 12 is equal to or less than the tensile force of the spring connector 4, the spring connector 4 quickly returns the support and rebound connector 3 to its original position, realizing the function of regulating the pressure in the air outlet channel. Finally, if problems such as the failure of the spring connector 4 occur when this assembly exceeds the specified service life, it can also be repaired by disassembling and replacing the accessories, and the repair cost is low.

[0050] In the center of the above-mentioned plastic connector 1 is the pressure relief valve cavity 11. One end of the plastic connector 1 is provided with a pressure relief channel 12 in the center. The bottom of the pressure relief channel 12 communicates with the pressure relief valve cavity 11. An external thread spring slot 13 is provided on the outer contour of the plastic connector 1 near the pressure relief channel 12. The pressure relief valve assembly proposed by the present utility model is only a module in the pressure relief area of the pressure relief valve.

[0051] The above-mentioned cylindrical plug 2 is placed on one side of the plastic connector 1 where the pressure relief channel 12 is located. The top of the cylindrical plug 2 abuts against the plastic connector 1 to block the pressure relief channel 12. The outer diameter of the cylindrical plug 2 is smaller than the inner diameter of the sealing plug installation groove 32. The difference between the inner diameter of the sealing plug installation groove 32 and the outer diameter of the cylindrical plug 2 is smaller than the inner diameter of the pressure relief channel 12. The support and rebound connector 3 uses the tensile force to make the spring connector 4 exert a force towards each other, so that the cylindrical plug 2 can abut against and block the pressure relief channel 12.

[0052] The above-mentioned support and resilient connection member 3 is sleeved on the side of the cylindrical plug head 2 away from the plastic connection member 1. The support and resilient connection member 3 includes: a second external thread spring slot 31, a seal plug installation groove 32, a demolding and weight-reducing process hole 33, and a support rod 34. Among them, the second external thread spring slot 31 is opened on the outer wall of the support and resilient connection member 3 close to the plastic connection member 1. A seal plug installation groove 32 is opened in the center of the end of the support and resilient connection member 3 close to the plastic connection member 1. A demolding and weight-reducing process hole 33 is opened in the center of the bottom of the seal plug installation groove 32. The demolding and weight-reducing process hole 33 can reduce the production cost of the support and resilient connection member 3 and assist in the demolding process of mold processing and forming. A support rod 34 in the shape of a polygonal column is arranged on the side of the support and resilient connection member 3 away from the plastic connection member 1. The support rod 34 will be positioned and clamped by the pressure relief valve housing. The polygonal column prevents it from rotating and causing the spring connection member 4 to derail.

[0053] One side of the above-mentioned spring connection member 4 is sleeved on the plastic connection member 1 and the other side is sleeved on the support and resilient connection member 3. One side of the spring connection member 4 is clamped in the first external thread spring slot 13 and the other side is clamped in the second external thread spring slot 31. The support and resilient connection member 3 has a stretching function. Before assembly, the spring connection member 4 has a diameter of 4.2 mm and a height of 6.0 mm. After assembly and stretching, the height is about 11.5 mm. After expansion, it is tightly held in the 7-mm first external thread spring slot 13 and the second external thread spring slot 31 to form an effective thread. As Figure 1 shown, it winds 2.25 turns in the first external thread spring slot 13 and 6.5 turns in the second external thread spring slot 31, generating a relatively high tensile force after assembly.

[0054] The above embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A pressure relief valve assembly, characterized in that, Comprising: A plastic connector (1), with a pressure relief valve inner cavity (11) in the center of the plastic connector (1). At one end of the plastic connector (1), a pressure relief channel (12) is opened in the center, and the bottom of the pressure relief channel (12) communicates with the pressure relief valve inner cavity (11); A cylindrical plug (2), which is placed on one side of the plastic connector (1) where the pressure relief channel (12) is located. The top of the cylindrical plug (2) abuts against the plastic connector (1) to block the pressure relief channel (12); A support and rebound connector (3), which is sleeved on the side of the cylindrical plug (2) away from the plastic connector (1); A spring connector (4), with one side sleeved on the plastic connector (1) and the other side sleeved on the support and rebound connector (3).

2. The pressure relief valve assembly according to claim 1, characterized in that, On the outer contour of the plastic connector (1) near the pressure relief channel (12), a first external thread spring slot (13) is opened.

3. The pressure relief valve assembly according to claim 2, wherein, The support and rebound connector (3) includes: A second external thread spring slot (31), which is opened on the outer wall of the support and rebound connector (3) near the plastic connector (1); A seal plug installation groove (32), which is opened in the center of one end of the support and rebound connector (3) near the plastic connector (1); A demolding and weight reduction process hole (33), which is opened in the center of the bottom of the seal plug installation groove (32); A support rod (34), which is arranged on the side of the support and rebound connector (3) away from the plastic connector (1). The support rod (34) is in the shape of a polygonal column.

4. The pressure relief valve assembly according to claim 3, wherein, The pressure relief channel (12) is in the shape of a round hole, and the inner diameter of the pressure relief channel (12) is smaller than the outer diameter of the cylindrical plug (2).

5. The pressure relief valve assembly according to claim 4, wherein, The inner diameter of the seal plug installation groove (32) is larger than the outer diameter of the cylindrical plug (2), and the difference between the inner diameter of the seal plug installation groove (32) and the outer diameter of the cylindrical plug (2) is smaller than the inner diameter of the pressure relief channel (12).

6. The pressure relief valve assembly according to claim 5, characterized in that, One side of the spring connector (4) is clamped in the first external thread spring slot (13), and the other side is clamped in the second external thread spring slot (31).

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