Safety valve

Abstract

The utility model relates to the technical field of valves, and discloses a safety valve which comprises a valve body and a leakage body, the valve body is arranged in a penetrating mode along two axial ends of the valve body, an installation platform is arranged on the outer side wall of the valve body, and an assembly boss is arranged on the installation platform in a protruding mode. A first through hole which penetrates through the mounting platform and the assembling boss and is communicated with the interior of the valve body is formed in the assembling boss, and the leakage body is mounted on the mounting platform and connected to the outer side of the assembling boss in a sleeving mode. The connection of each part of the outer leakage body of the installation valve with the installation platform and the assembly boss is consistent, the connection strength of the installation valve is ensured, and the situation that the outer leakage body is directly installed in the concave arc-shaped opening of the side wall of the cylindrical valve body, so that the connection area between the outer leakage body and the valve body is not consistent, and the outer leakage body and the valve body are not firmly fixed is avoided.

Description

Technical Field

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

[0002] The safety valve is an important safety protection component of the water heater. Its main working principle is that it is a protection device that can automatically release pressure to the outside when the pressure of tap water or water in the water heater tank is higher than the rated water pressure set by the water heater. The existing stainless steel safety valve includes a valve body and a leakage body. The leakage body is connected to the valve body. The valve body is provided with an inner concave arc mouth connected to the leakage body. The outer edge of the inner wall of the arc mouth is provided with an arc boss. The valve body and the leakage body are die-cast or welded. The above design adopts the inner concave arc mouth seal. When welding, the leakage body needs to be embedded in the valve body. Because the valve body is circular in shape, the thickness of the insert is different around the position, and the welding liquid cannot penetrate evenly, resulting in insufficient product strength. Utility Model Content

[0003] The utility model aims to provide a safety valve, which solves the technical problem of insufficient connection strength between a valve body and an external leakage body of the safety valve in the prior art.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a safety valve, comprising a valve body and a leakage body, wherein the valve body is through-set at both ends along its axial direction, an outer wall of the valve body is provided with a mounting platform, an assembly boss is protruding from the mounting platform, a first through hole that penetrates the mounting platform and the assembly boss and is connected to the interior of the valve body is provided on the assembly boss, the leakage body is mounted on the mounting platform, and is sleeved and connected to the outer side of the assembly boss.

[0006] The safety valve is provided with a mounting platform on the outer wall of the valve body, an assembly boss is convexly provided on the mounting platform, a first through hole is provided on the assembly boss that penetrates the mounting platform and the assembly boss and is connected to the interior of the valve body, the leakage body is installed on the mounting platform, and is sleeved and connected to the outer side of the assembly boss. The connection between the leakage body of the installed valve and the mounting platform and the assembly boss is relatively consistent at all places, thereby ensuring the connection strength of the installed valve. There is no situation where the leakage body is directly installed in the concave arc-shaped opening of the side wall of the cylindrical valve body, resulting in inconsistent connection area between the circumference of the leakage body and the valve body, resulting in loose fixation of the two.

[0007] As a preferred solution of the above safety valve, a sealing boss is provided on the circumferential outer edge of the first through hole, and the sealing boss is convexly arranged on the assembly boss.

[0008] The provision of the sealing boss facilitates the sealing of the first through hole by the leakage component, thereby improving the sealing effect.

[0009] As a preferred solution of the above safety valve, the circumferential side wall of the sealing boss is perpendicular to the axial direction of the valve body.

[0010] The above arrangement enables the outer diameter of the sealing boss to remain unchanged, thereby ensuring the stability of the pressure of the safety valve.

[0011] As a preferred solution of the above safety valve, a rounded corner structure is provided at a port of the sealing boss at one end away from the valve body.

[0012] The above arrangement can reduce the contact area between the leakage component and the sealing boss, improve the sealing effect, and avoid the situation of loose sealing.

[0013] As a preferred solution of the above safety valve, the diameter range corresponding to the rounded corner structure is: 0.6mm-1.5mm.

[0014] The above arrangement is convenient for preparation and has a better sealing effect.

[0015] As a preferred solution of the above safety valve, the outer diameter size range of the sealing boss is: 10mm-16mm.

[0016] The above arrangement not only ensures the strength of the sealing boss, but also avoids interference with the installation of the leakage body.

[0017] As a preferred solution of the above safety valve, the inner wall of the leakage body is in contact with the outer wall of the assembly boss.

[0018] The above arrangement enables the leakage body to be stably mounted on the outer side of the assembly boss, thereby improving the mounting accuracy of the leakage body.

[0019] As a preferred solution of the above safety valve, the valve body and the leakage body are connected by welding.

[0020] The valve body and the skew body are welded together, and the connection is relatively firm.

[0021] As a preferred solution of the above safety valve, the valve body and the leakage body are made of stainless steel.

[0022] The valve body and the drain body are made of stainless steel, which has low cost and good structural strength and corrosion resistance.

[0023] Beneficial effects of the utility model:

[0024] The safety valve proposed in the utility model is characterized in that a mounting platform is arranged on the outer side wall of the valve body, an assembly boss is convexly arranged on the mounting platform, a first through hole is arranged on the assembly boss, which penetrates the mounting platform and the assembly boss and is communicated with the interior of the valve body, the leakage body is mounted on the mounting platform, and is sleeved and connected to the outer side of the assembly boss, the connection of the leakage body of the mounting valve with the mounting platform and the assembly boss at various locations is relatively consistent, thus ensuring the connection strength of the mounting valve, and there is no situation where the leakage body is directly mounted in the concave arc-shaped opening of the side wall of the cylindrical valve body, resulting in inconsistent connection area between the circumference of the leakage body and the valve body, resulting in loose fixation of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the safety valve provided by the utility model;

[0026] Figure 2 It is a top view of the safety valve provided by the utility model;

[0027] Figure 3 yes Figure 2 Sectional view along AA direction;

[0028] Figure 4 It is a structural schematic diagram of the valve body provided by the utility model;

[0029] Figure 5 It is a side view of the valve body provided by the utility model;

[0030] Figure 6 yes Figure 5 The cross-sectional view along the BB direction;

[0031] Figure 7 It is a cross-sectional view of the safety valve provided by the utility model with the valve body and the internal leakage component removed.

[0032] In the figure:

[0033] 1. valve body; 11. mounting platform; 12. assembly boss; 13. first through hole; 14. sealing boss; 141. rounded corner structure; 101. inlet; 102. outlet;

[0034] 2. leakage body; 21. second through hole;

[0035] 3. Diversion nozzle;

[0036] 4. Leakage component; 41. Connecting piece; 411. First connecting rod; 4111. Boss structure; 412. Second connecting rod; 4121. Boss structure; 4122. Through hole; 42. Elastic piece; 43. Pressure regulating cap; 44. Sealing seat;

[0037] 5. switch assembly; 51. handle; 52. connecting shaft. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying 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 of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] The safety valve is an important safety protection component of the water heater. Its main working principle is that it is a protection device that can automatically release pressure to the outside when the pressure of tap water or water in the water heater tank is higher than the rated water pressure set by the water heater. The existing stainless steel safety valve includes a valve body and a leakage body. The leakage body is connected to the valve body. The valve body is provided with an inner concave arc mouth connected to the leakage body. The outer edge of the inner wall of the arc mouth is provided with an arc boss. The valve body and the leakage body are die-cast or welded. The above design adopts the inner concave arc mouth seal. When welding, the leakage body needs to be embedded in the valve body. Because the valve body is circular in shape, the thickness of the insert is different around the position, and the welding liquid cannot penetrate evenly, resulting in insufficient product strength.

[0043] In order to solve the above problems, Figure 1-Figure 3 As shown, this embodiment provides a safety valve, including a valve body 1 and a leakage body 2. The valve body 1 is a cylindrical structure with two ends along its axial direction being connected. One end of the valve body 1 is an inlet 101, and the other end is an outlet 102. The outer wall of the valve body 1 is provided with a mounting platform 11, and a mounting boss 12 is protruding on the mounting platform 11. The mounting boss 12 is provided with a first through hole 13 that penetrates the mounting platform 11 and the mounting boss 12 and is connected to the inside of the valve body 1. The leakage body 2 is installed on the mounting platform 11 and is sleeved and connected to the outside of the mounting boss 12. In this embodiment, the leakage body 2 is welded to the valve body 1.

[0044] The mounting platform 11 of the mounting valve is a planar structure, so that the connection between the leakage body 2 and the mounting platform 11 and the assembly boss 12 is relatively consistent. During welding, the welding liquid penetrates evenly, ensuring the connection strength of the mounting valve. There is no situation where the leakage body 2 is directly installed in the concave arc-shaped opening of the side wall of the cylindrical valve body 1, resulting in an inconsistent connection area between the circumference of the leakage body 2 and the valve body 1, resulting in the two being not firmly fixed.

[0045] Furthermore, if Figure 4-Figure 6 As shown, a sealing boss 14 is provided at the circumferential outer edge of the first through hole 13, and the sealing boss 14 is convexly provided on the assembly boss 12. The provision of the sealing boss 14 facilitates the sealing of the first through hole 13 by the leakage component 4, thereby improving the sealing effect.

[0046] In this embodiment, the circumferential side wall of the sealing boss 14 is perpendicular to the axial direction of the valve body 1. The above arrangement keeps the outer diameter of the sealing boss 14 unchanged, thereby ensuring the stability of the pressure of the safety valve.

[0047] Preferably, if Figure 6 As shown, the port of the sealing boss 14 away from the valve body 1 is provided with a rounded corner structure 141. The above arrangement can reduce the contact area between the leakage component 4 and the sealing boss 14, improve the sealing effect, and avoid the situation of loose sealing.

[0048] Optionally, the diameter range corresponding to the rounded structure 141 of the sealing boss 14 is: 0.6mm-1.5mm. The above arrangement is easy to prepare, can be applicable to the application scenario of the water heater, and has a good sealing effect.

[0049] Optionally, the outer diameter of the sealing boss 14 ranges from 10 mm to 16 mm. The above arrangement not only ensures the strength of the sealing boss 14 but also avoids interference with the installation of the external leakage body 2.

[0050] In this embodiment, the inner wall of the leakage body 2 fits the outer wall of the assembly boss 12. The above arrangement enables the leakage body 2 to be stably installed on the outer side of the assembly boss 12, thereby improving the installation accuracy of the leakage body 2. The valve body 1 and the leakage body 2 are welded together, and the connection is relatively firm.

[0051] Optionally, the mounting platform 11 is surface treated in the circumferential direction of the assembly boss 12 to increase the roughness of the surface of the mounting platform 11, thereby increasing the welding contact area between the mounting platform 11 and the external leakage body 2. For example, the surface of the mounting platform 11 may be knurled or shot blasted to increase the welding contact area between the mounting platform 11 and the external leakage body 2.

[0052] In this embodiment, the valve body 1 and the external leakage body 2 are made of stainless steel, which has low cost, good structural strength and corrosion resistance.

[0053] like Figure 1 and Figure 3 As shown, the safety valve also includes a guide nozzle 3, and a second through hole 21 is arranged on the side wall of the leakage body 2. One end of the guide nozzle 3 is inserted into the second through hole 21, and the side walls of the two are tightly fitted and welded and fixed, so that the connection between the guide nozzle 3 and the leakage body 2 is more stable, and the weld between the contact surfaces will not be corroded by the fluid medium flowing in from the inlet end of the guide nozzle 3.

[0054] Alternatively, if Figure 3 and Figure 7 As shown, the safety valve further includes an internal leakage component, an external leakage component 4 and a switch component 5, wherein the internal leakage component is installed in the valve body 1 (not shown in the figure), the external leakage component 4 is installed in the external leakage body 2, and one end of the external leakage component 4 elastically abuts against the sealing boss 14. The switch component 5 is connected to the end of the external leakage component 4 away from the valve body 1. When working, the switch component 5 is pulled to open the external leakage component 4, so that the external fluid entering from the inlet 101 of the valve body 1 passes through the internal leakage component and then enters the external leakage body 2 from the first through hole 13, and then flows out from the guide nozzle 3 after passing through the external leakage component 4.

[0055] It should be noted that since the specific structure of the internal leakage component is a conventional structure, it will not be described in detail here.

[0056] Since one end of the leakage component 4 elastically abuts against the sealing boss 14, when the external fluid impacts the leakage component 4, or the leakage component 4 compresses the elastic part 42 of the leakage component 4 under the action of external force, the sealing boss 14 can be evenly stressed and pressure-bearing, thereby making the safety valve more stable and having a longer service life.

[0057] Specifically, Figure 7As shown, the leakage assembly 4 includes a connector 41, an elastic member 42, a pressure regulating cap 43 and a sealing seat 44, wherein one end of the connector 41 elastically abuts against the sealing boss 14, and the other end of the connector 41 extends out of the leakage body 2; the pressure regulating cap 43 is sleeved on the end of the connector 41 extending out of the leakage body 2; the elastic member 42 is a spring, which is sleeved between the outside of the connector 41 and the pressure regulating cap 43. The sealing seat 44 is a cover body with a groove, and is sleeved on the protruding end of the connector 41. When the pressure regulating cap 43 compresses the spring to a certain height according to the preset pressure, the sealing seat 44 is connected with the leakage body 2 in a matching manner, and the connection method includes a snap connection, a spiral connection, etc., so that the pressure regulating cap 43 is restricted in the leakage body 2. In this way, the height of the spring is pre-adjusted by the pressure regulating cap 43, and then the sealing is performed, so that the pressure relief pressure of the safety valve can be flexibly adjusted. In this embodiment, an external thread is further provided on the outer surface of the sealing seat 44 , and an internal thread is provided on the inner side of the leakage body 2 . The external thread cooperates with the internal thread to fix the sealing seat 44 and the leakage body 2 together.

[0058] Furthermore, the above-mentioned connecting member 41 can be an integrally formed structure or a split structure that can achieve linkage. In this embodiment, the connecting member 41 includes a first connecting rod 411 and a second connecting rod 412. The first connecting rod 411 can abut against the sealing boss 14, and one end of the second connecting rod 412 is in contact with the first connecting rod 411. A boss structure 4111 is provided on the inner side of the first connecting rod 411, and one end of the second connecting rod 412 is a bump structure 4121 that cooperates with the boss structure 4111, and the bump structure 4121 is penetrated in the first connecting rod 411 and limited by the boss structure 4111. The other end of the second connecting rod 412 extends out of the leakage body 2 and is connected to the switch assembly 5. When the second connecting rod 412 moves toward the switch assembly 5, it can drive the first connecting rod 411 to move at the same time.

[0059] During assembly, the bottom of the assembled leakage component 4 is first inserted into the leakage body 2, and then the external thread of the sealing seat 44 is screwed and fixed to the leakage body 2. The sealing seat 44 can also be clamped on the leakage component 4 by a buckle structure, and a sealing gasket, an O-ring or other sealing member is arranged between the sealing seat 44 and the leakage body 2 for sealing.

[0060] As a preferred embodiment, the switch assembly 5 includes a handle 51 and a connecting shaft 52. The protruding end of the second connecting rod 412 of the connecting member 41 is provided with a through hole 4122, and the through hole 4122 extends along the axial direction of the connecting member 41. In this embodiment, the through hole 4122 is a waist-shaped hole. The connecting shaft 52 is penetrated in the through hole 4122 and can move along the extension direction of the through hole 4122. One end of the handle 51 is connected to the connecting shaft 52. By rotating the handle 51, the end of the handle 51 provided with the connecting shaft 52 is abutted against the sealing seat 44, thereby driving the connecting shaft 52 to move along the extension direction of the through hole 4122, so that the connecting member 41 moves forward and backward along its axial direction, so that the leakage assembly 4 opens or closes the first through hole 13.

[0061] As a preferred embodiment, a seal is also provided between the contact surface of the sealing seat 44 and the connecting member 41 for sealing, and the seal can be a sealing gasket, an O-ring, etc. In this embodiment, other sealing parts of the safety valve are sealed by end face sealing technology.

[0062] When the installation valve is applied to an electric water heater, the fluid medium in the external pipeline enters the safety valve from the inlet 101 of the valve body 1, the internal leakage component is compressed and opened, and the fluid medium (such as water flow) enters the electric water heater through the outlet 102 of the valve body 1. When the pressure in the fluid medium is too high or the pressure of the electric water heater is too high after heating, the external leakage component 4 is compressed by the elastic member 42, so that the external leakage component 4 opens, and the fluid medium flows through the external leakage body 2 and then flows out through the guide nozzle 3. When the pressure in the water heater needs to be manually released, the switch component 5 can be opened to allow the external fluid to enter from the inlet 101 of the valve body 1, and enter the external leakage body 2 from the medium flow channel after passing through the internal leakage component, and then flow out from the guide nozzle 3 after the pressure is released through the external leakage component 4.

[0063] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Safety valve, characterized in that, The invention comprises a valve body (1) and an external leakage body (2), wherein the valve body (1) is through-set at both ends along its axial direction, an outer wall of the valve body (1) is provided with a mounting platform (11), an assembly boss (12) is protruding from the mounting platform (11), and the assembly boss (12) is provided with a first through hole (13) which penetrates the mounting platform (11) and the assembly boss (12) and is connected to the interior of the valve body (1), and the external leakage body (2) is mounted on the mounting platform (11) and is sleeved and connected to the outer side of the assembly boss (12).

2. The safety valve according to claim 1, characterized in that: A sealing boss (14) is provided on the circumferential outer edge of the first through hole (13), and the sealing boss (14) is protruding on the assembly boss (12).

3. The safety valve according to claim 2, characterized in that: The circumferential side wall of the sealing boss (14) is perpendicular to the axial direction of the valve body (1).

4. The safety valve according to claim 2, characterized in that: A rounded corner structure (141) is provided at a port at one end of the sealing boss (14) away from the valve body (1).

5. The safety valve according to claim 4, characterized in that: The diameter range corresponding to the rounded corner structure (141) is 0.6 mm to 1.5 mm.

6. The safety valve according to claim 2, characterized in that: The outer diameter of the sealing boss (14) ranges from 10 mm to 16 mm.

7. The safety valve according to any one of claims 1 to 6, characterized in that: The inner side wall of the leakage body (2) is in contact with the outer side wall of the assembly boss (12).

8. The safety valve according to any one of claims 1 to 6, characterized in that: The valve body (1) and the leakage body (2) are connected by welding.

9. The safety valve according to any one of claims 1 to 6, characterized in that: The valve body (1) and the leakage body (2) are made of stainless steel.

Images