Safety valve with protection function

Abstract

The safety valve with the protection function comprises a valve shell, a valve body and a pressure regulating valve seat, the valve body is connected to the valve shell in a threaded mode, a rubber sleeve is arranged on the outer wall of the valve body in a sleeved mode and arranged at a threaded connection inlet of the valve body, and the pressure regulating valve seat is connected into the valve shell in a threaded mode. The valve shell is provided with a detachable protective cover and is arranged at an inlet of the pressure regulating valve seat. By means of the detachable protective cover, the pressure regulating valve seat is effectively protected and prevented from being eroded by damp air, the stability of threaded connection between the pressure regulating valve seat and the valve shell is enhanced, the protective cover plays a dustproof role, the rubber sleeve prevents dust from entering the position between the valve body and the valve shell, meanwhile, the situation that other persons adjust the pressure regulating valve seat by mistake is avoided, and the service life of the pressure regulating valve seat is prolonged. And the product has the advantages of moisture prevention, dust prevention and mistaken touch prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a safety valve with a protective function. Background Art

[0002] A safety valve, also known as a relief valve, is a safety protection valve that is usually connected to high-pressure equipment or high-pressure pipelines such as high-pressure pumps and boilers. Under normal circumstances, the opening and closing parts on it are in a normally closed state due to external forces. When the medium pressure in the high-pressure equipment or pipeline rises and exceeds the specified value, it automatically opens. By discharging the medium outside the system, it prevents the medium pressure in the pipeline or equipment from exceeding the specified value, thereby ensuring personal safety and safe operation of the equipment.

[0003] The existing safety valve is mainly composed of a valve body, a valve core, a pressure regulating valve seat, etc. Among them, the pressure regulating valve seat is one of the key components for adjusting the pressure relief pressure of the safety valve. The pressure regulating valve seat is connected to the valve body through threads and is in an exposed state. The threaded connection is easily corroded by moist air in the air, causing rust and affecting the connection stability. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional safety valve design and provide a product that is moisture-proof, dust-proof and prevents accidental touch.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A safety valve with a protective function includes a valve housing, a valve body, and a pressure-regulating valve seat. The valve body is threadedly connected to the valve housing. The outer wall of the valve body is provided with a rubber sleeve and is arranged at the threaded connection entrance of the valve body. The pressure-regulating valve seat is threadedly connected to the inside of the valve housing. The valve housing is provided with a detachable protective cover and is arranged at the entrance of the pressure-regulating valve seat.

[0007] Preferably, the valve body is provided with a quick connector, a screw plug and a guide sleeve are provided in the quick connector, the guide sleeve is provided in the screw plug, the inner walls of the guide sleeve and the screw plug are provided with a plurality of pressure relief holes, and the inner wall of the quick connector is provided with pressure relief holes corresponding to the pressure relief holes.

[0008] Preferably, a valve core is provided in the valve body and is slidably arranged in the guide sleeve and the wire plug. The valve core is provided with a through hole corresponding to the pressure relief hole. The through hole and the pressure relief hole are arranged in a staggered relationship. An O-ring is provided between the valve core and the guide sleeve and the wire plug.

[0009] Preferably, the rubber sleeve is provided with a bent portion and abuts against the inclined outer wall of the valve body.

[0010] Preferably, a spring pad is provided in the valve housing, one end of the spring pad is provided with a bulge and abuts the valve core, the other end of the spring pad is provided with a convex column, the outer wall of the convex column is provided with a spring, one end of the spring abuts the pressure regulating valve seat, and the other end abuts the spring pad, and the pressure regulating valve seat is provided with a hexagonal groove.

[0011] Preferably, the outer wall of the valve housing is provided with an external thread groove.

[0012] Preferably, the inner wall of the protective cover is provided with an internal thread groove, which is threadably engaged with the external thread groove.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model uses a detachable protective cover, which not only effectively protects the pressure regulating valve seat to prevent it from being corroded by moist air, but also enhances the stability of the threaded connection between the pressure regulating valve seat and the valve housing. In addition, the protective cover plays a dust-proof role, and the rubber sleeve prevents dust from entering between the valve body and the valve housing. At the same time, it also prevents other people from mistakenly adjusting the pressure regulating valve seat, so that the product has the advantages of moisture-proof, dust-proof and accidental touch-proof. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the side cross-sectional structure of a safety valve with a protective function according to the present invention;

[0017] The corresponding relationship between the labels and component names in the figures is as follows:

[0018] Figure numerals: 1. valve housing; 2. valve body; 3. pressure-regulating valve seat; 4. rubber sleeve; 5. protective cover; 6. valve core; 7. spring pad; 8. spring; 21. quick connector; 22. screw plug; 23. guide sleeve; 24. pressure relief hole; 211. pressure relief hole; 31. hexagonal groove; 41. bending part; 61. through hole; 62. O-ring; 71. convex bump; 72. convex column. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0022] Reference example Figure 1 , a safety valve with a protective function, includes a valve housing 1, a valve body 2, and a pressure-regulating valve seat 3. The valve body 2 is threadedly connected to the valve housing 1. The outer wall of the valve body 2 is provided with a rubber sleeve 4 and is arranged at the threaded connection entrance of the valve body 2. The pressure-regulating valve seat 3 is threadedly connected to the valve housing 1. The valve housing 1 is provided with a detachable protective cover 5 and is arranged at the entrance of the pressure-regulating valve seat 3. The detachable protective cover 5 not only effectively protects the pressure-regulating valve seat 3 from being eroded by moist air, but also enhances the stability of the threaded connection between the pressure-regulating valve seat 3 and the valve housing 1. In addition, the protective cover 5 plays a dust-proof role, and the rubber sleeve 4 prevents dust from entering between the valve body 2 and the valve housing 1. At the same time, it also prevents other people from adjusting the pressure-regulating valve seat 3 by mistake.

[0023] It is worth mentioning that the valve body 2 is provided with a quick connector 21, which is provided with a screw plug 22 and a guide sleeve 23. The guide sleeve 23 is sleeved in the screw plug 22. The inner walls of the guide sleeve 23 and the screw plug 22 are provided with a plurality of pressure relief holes 24. The inner wall of the quick connector 21 is provided with a pressure discharge hole 211 corresponding to the pressure relief hole 24. The quick connector 21 is convenient for the pipe body to be quickly connected or disassembled therewith. The screw plug 22 is threadedly connected to the valve body 2 to provide support for the guide sleeve 23. The guide sleeve 23 provides a guiding effect for the valve core 6. The pressure relief hole 24 and the pressure discharge hole 211 discharge hydraulic oil that exceeds the set pressure to avoid cracks and ruptures in the pipeline due to high pressure.

[0024] It is worth mentioning that a valve core 6 is provided in the valve body 2 and is slidably arranged in the guide sleeve 23 and the wire plug 22. The valve core 6 is provided with a through hole 61 corresponding to the pressure relief hole 24. The through hole 61 and the pressure relief hole 24 are set in a staggered relationship. An O-ring 62 is provided between the valve core 6 and the guide sleeve 23 and the wire plug 22. When the pressure in the pipeline gradually rises and reaches the set threshold, the force on the spring pad 7 exceeds the force of its spring 8, thereby compressing the spring 8, so that the through hole 61 coincides with the pressure relief hole 24, thereby effectively relieving pressure and protecting the pipeline. The O-ring 62 prevents the valve core 6 from having a gap with the guide sleeve 23 and the wire plug 22 during the pressure relief process, preventing hydraulic oil from being discharged into the spring 8 seat and the spring 8, ensuring that a relatively sealed structure is formed in the valve core 6, the guide sleeve 23 and the wire plug 22 to avoid insufficient pressure due to the gap and inability to effectively relieve pressure;

[0025] It is worth mentioning that the rubber sleeve 4 has a bent portion 41 that abuts the inclined outer wall of the valve body 2. The bent portion 41 makes the rubber sleeve 4 tightly adhere to the outer wall of the valve body 2, thereby enhancing the friction between the rubber sleeve 4 and the valve body 2. When the pressure relief hole 211 is relieved, the pressure will cause the rubber sleeve 4 to temporarily leave the outer wall of the valve body 2, allowing the hydraulic oil to be discharged.

[0026] It is worth mentioning that a spring washer 7 is provided in the valve housing 1, one end of the spring washer 7 is provided with a convex hull 71, and abuts the valve core 6, the other end of the spring washer 7 is provided with a convex column 72, and the outer wall of the convex column 72 is provided with a spring 8, one end of the spring 8 abuts the pressure regulating valve seat 3, and the other end abuts the spring washer 7. The pressure regulating valve seat 3 is provided with a hexagonal groove 31, and the elastic force of the spring 8 acts on the valve core 6 through the spring washer 7. The convex hull 71 concentrates the elastic force of the spring 8 on the valve core 6, and the convex column 72 places the spring 8 and the spring washer 7 on the same axis, ensuring that the spring washer 7 is evenly subjected to the elastic force. The hexagonal groove 31 makes it easy for the user to rotate the pressure regulating valve seat 3 with a tool, thereby adjusting the relief pressure value of the safety valve;

[0027] It is worth mentioning that the outer wall of the valve housing 1 is provided with an external thread groove, which is used in conjunction with the protective cover 5;

[0028] It is worth mentioning that the inner wall of the protective cover 5 is provided with an internal thread groove, which is threadedly engaged with the external thread groove. The internal thread groove ensures that the protective cover 5 is stably connected to the valve housing 1, preventing the pressure regulating valve seat 3 from being corroded by moist air.

[0029] The above design solution can make the product have the advantages of moisture-proof, dust-proof and accidental touch-proof.

[0030] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A safety valve with a protective function, comprising a valve housing (1), a valve body (2), and a pressure regulating valve seat (3), characterized in that: The valve body (2) is threadedly connected to the valve housing (1); the outer wall of the valve body (2) is provided with a rubber sleeve (4) and is arranged at the threaded connection entrance of the valve body (2); the pressure regulating valve seat (3) is threadedly connected to the inside of the valve housing (1); the valve housing (1) is provided with a detachable protective cover (5) and is arranged at the entrance of the pressure regulating valve seat (3).

2. The safety valve with protective function according to claim 1, characterized in that: The valve body (2) is provided with a quick connector (21), a screw plug (22) and a guide sleeve (23) are provided in the quick connector (21), the guide sleeve (23) is sleeved in the screw plug (22), the inner walls of the guide sleeve (23) and the screw plug (22) are provided with a plurality of pressure relief holes (24), and the inner wall of the quick connector (21) is provided with pressure relief holes (211) corresponding to the pressure relief holes (24).

3. The safety valve with protective function according to claim 2, characterized in that: A valve core (6) is provided in the valve body (2) and is slidably arranged in the guide sleeve (23) and the screw plug (22). The valve core (6) is provided with a through hole (61) corresponding to the pressure relief hole (24). The through hole (61) and the pressure relief hole (24) are arranged in a staggered relationship. An O-type sealing ring (62) is provided between the valve core (6), the guide sleeve (23) and the screw plug (22).

4. The safety valve with protective function according to claim 2, characterized in that: The rubber sleeve (4) is provided with a bent portion (41) and abuts against the inclined outer wall of the valve body (2).

5. The safety valve with protective function according to claim 3, characterized in that: A spring pad (7) is provided in the valve housing (1), one end of the spring pad (7) is provided with a convex bump (71) and abuts against the valve core (6), the other end of the spring pad (7) is provided with a convex column (72), the outer wall of the convex column (72) is provided with a spring (8), one end of the spring (8) abuts against the pressure regulating valve seat (3), and the other end abuts against the spring pad (7), and the pressure regulating valve seat (3) is provided with a hexagonal groove (31).

6. The safety valve with protective function according to claim 1, characterized in that: The outer wall of the valve housing (1) is provided with an external thread groove.

7. The safety valve with protective function according to claim 6, characterized in that: The inner wall of the protective cover (5) is provided with an internal thread groove, which is threadably engaged with the external thread groove.

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