Handle-free safety valve

Abstract

The utility model belongs to the technical field of valves, and discloses a safety valve without a handle. The handle-free safety valve comprises a valve body, a valve cover, a sealing assembly and an elastic piece, an inner cavity and a pressure relief cavity communicated with the inner cavity are formed in the valve body, the valve cover is connected to one end of the valve body, and the sealing assembly is arranged in the valve body in a penetrating mode and can move relative to the valve body so as to control connection and disconnection between the inner cavity and the pressure relief cavity. One end of the sealing assembly can seal the outlet of the inner cavity, the other end of the sealing assembly is a free end, one end of the elastic piece abuts against the sealing assembly, and the other end of the elastic piece abuts against the valve deck. According to the safety valve, a handle is omitted, the top end of the sealing assembly is arranged to be the free end, the length, extending out of the valve deck, of the free end is shortened, the safety valve is made to be miniaturized, after-sales maintenance is facilitated, the assembling procedure and the direct cost of products are reduced, and the market competitiveness is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a handleless safety valve. BACKGROUND

[0002] The safety valve opens when the medium pressure exceeds the pressure value, can discharge fluid medium to the fluid system outside to reduce the system pressure to avoid the fluid system to be damaged due to the medium pressure is too high, guarantees the safe operation of equipment and personnel's life safety, therefore the safety valve is widely used in the fluid control field.

[0003] The existing safety valve, since the manual pressure relief when failure is realized, therefore one end of the sealing assembly usually extends out of the valve cover and is connected with the handle, realizes the manual pressure relief through the handle, but if needing after-sales maintenance after assembly, the handle of the safety valve interferes with the water pump and the expansion water tank, is not convenient for maintenance, therefore needs the miniaturization of the existing safety valve.

[0004] Therefore, it is urgent to provide a handleless safety valve to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a handleless safety valve, cancel the setting of handle, shorten the extension length of sealing assembly, make the miniaturization of safety valve, save the cost, and it is convenient for after-sales maintenance.

[0006] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0007] A handleless safety valve, comprising:

[0008] A valve body, an inner cavity and a pressure relief cavity communicated with the inner cavity are arranged in the valve body;

[0009] A valve cover connected to one end of the valve body;

[0010] A sealing assembly arranged in the valve body and movable relative to the valve body to control the on-off of the inner cavity and the pressure relief cavity, one end of the sealing assembly can seal the outlet of the inner cavity, and the other end is a free end;

[0011] An elastic member, one end of the elastic member abuts against the sealing assembly, and the other end abuts against the valve cover.

[0012] As an optional scheme, the sealing assembly comprises a sealing seat and a sealing piece, the sealing piece is connected to the bottom of the sealing seat, the sealing piece can seal the outlet of the inner cavity, and the end of the sealing seat away from the sealing piece is the free end and is arranged in the valve cover.

[0013] As an optional scheme, an inner hole is arranged in the sealing seat.

[0014] As an optional solution, the inner hole penetrates the sealing seat in the axial direction away from one end of the free end, and the free end is closed.

[0015] As an optional solution, the top end of the valve cover is provided with a penetration opening, the sealing seat comprises a first guide part, the bottom end of the first guide part is connected with the sealing element, the top end of the first guide part is the free end and penetrates the penetration opening.

[0016] As an optional solution, the sealing seat further comprises a second guide part, the second guide part is annularly arranged on the periphery of the first guide part, and the second guide part is in sliding fit with the inner cavity of the valve cover.

[0017] As an optional solution, a second accommodating groove is arranged in the sealing seat, the second accommodating groove is located between the first guide part and the second guide part, the elastic element is sleeved outside the first guide part, and the bottom end of the elastic element is accommodated in the second accommodating groove.

[0018] As an optional solution, a first accommodating groove is arranged in the valve cover, and one end of the elastic element away from the sealing assembly is accommodated in the first accommodating groove.

[0019] As an optional solution, the valve body is further provided with a mounting cavity for mounting the sealing assembly, the mounting cavity is coaxially and communicatively arranged with the inner cavity, and the inner cavity is vertically arranged with the pressure relief cavity.

[0020] As an optional solution, an inner thread is arranged on the inner wall of one end of the valve body, an outer thread is arranged on the outer periphery of the valve cover, and the valve cover is threadedly connected with the inner thread of the valve body through the outer thread.

[0021] The utility model discloses beneficial effects:

[0022] The utility model provides a kind of handleless safety valve, when safety valve is in closed state, one end of sealing assembly is sealed to the export of inner cavity under the elastic force of elastic element, so that the inner cavity of valve body and pressure relief cavity are mutually isolated;When the pressure of fluid medium exceeds preset pressure value, sealing assembly is pushed to move upwards to overcome the elastic force of elastic element, so that the inner cavity of valve body and pressure relief cavity are mutually communicated, fluid medium flows to pressure relief cavity through inner cavity, and flows outwards through pressure relief cavity, realizes pressure relief process.The safety valve provided by the utility model cancels the setting of handle, sets the top end of sealing assembly as free end, and shortens the length of free end that protrudes from valve cover, so that safety valve is miniaturized, convenient for after-sales maintenance, and reduces assembly process and direct cost of product, improves market competitiveness. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structure schematic view of a handle-free safety valve provided by the embodiment of the present utility model;

[0024] Figure 2 is a sectional view of the handle-free safety valve provided by the embodiment of the present utility model.

[0025] In the drawing:

[0026] 1, valve body; 11, inner cavity; 12, pressure relief cavity; 13, mounting cavity;

[0027] 2, valve cover; 21, through hole; 22, first accommodating groove;

[0028] 3, sealing assembly; 31, sealing seat; 311, free end; 312, inner hole; 313, first guide part; 314, second guide part; 315, second accommodating groove; 32, sealing element;

[0029] 4, elastic element. DETAILED DESCRIPTION

[0030] The present utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, and not to limit the present utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present utility model are shown in the drawings, not all the structures.

[0031] In the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] In the present utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0034] The present embodiment provides a handle-free safety valve, hereinafter referred to as a safety valve, which is applied to a fluid medium system and opens when the pressure of the fluid medium exceeds a preset pressure value, can discharge the fluid medium in the fluid system outward, reduce the pressure in the fluid system, and protect the safe operation of equipment and the safety of personnel.

[0035] In the present embodiment, the safety valve is applied to pressure control of a wall-hanging stove heating system. It can be understood that in other embodiments, the safety valve can also be applied to other liquid pressure control environments such as urban water networks, musical fountains, industrial equipment, etc., as long as it can achieve safe control of the pressure of the fluid medium.

[0036] Specifically, as shown in Figure 1 and Figure 2 , the handle-free safety valve comprises a valve body 1, a valve cover 2, a sealing assembly 3, and an elastic member 4, the valve body 1 is provided with an inner cavity 11 and a pressure relief cavity 12 communicating with the inner cavity 11, the valve cover 2 is connected to one end of the valve body 1, the sealing assembly 3 is arranged in the valve body 1 and can move relative to the valve body 1 to control the opening and closing of the inner cavity 11 and the pressure relief cavity 12, one end of the sealing assembly 3 can seal the outlet of the inner cavity 11, and the other end is a free end 311, one end of the elastic member 4 abuts against the sealing assembly 3, and the other end abuts against the valve cover 2, and the elastic member 4 is used to provide a preset pressure value by relying on its elastic deformation.

[0037] When the safety valve is in a closed state, one end of the sealing assembly 3 is sealed under the elastic force of the elastic member 4, so that the inner cavity 11 and the pressure relief cavity 12 of the valve body 1 are isolated from each other; when the pressure of the fluid medium exceeds the preset pressure value, the sealing assembly 3 is pushed to move upward against the elastic force of the elastic member 4, so that the inner cavity 11 and the pressure relief cavity 12 of the valve body 1 are in communication with each other, the fluid medium flows through the inner cavity 11 to the pressure relief cavity 12, and flows outwards through the pressure relief cavity 12, realizing the pressure relief process.

[0038] In the prior art, the top end of the sealing assembly 3 protrudes out of the valve cover 2 and is connected with a handle, and manual pressure relief can be achieved through the handle. However, if after assembly, after-sales maintenance is required, the handle of the safety valve interferes with the water pump and the expansion tank, which is not convenient for maintenance. In order to solve the above problems, the safety valve provided in the embodiment cancels the setting of the handle, sets the top end of the sealing assembly 3 as a free end 311, and shortens the length of the free end 311 protruding out of the valve cover 2, so as to miniaturize the safety valve, facilitate after-sales maintenance, reduce the assembly process and direct cost of the product, and improve market competitiveness. It should be noted that manual pressure relief is used only when the automatic pressure relief function of the safety valve fails, and manual pressure relief needs to be disassembled and maintained. Therefore, manual pressure relief is rarely used in actual use. Although the safety valve provided in the embodiment cancels the setting of the handle, it basically has no effect, and can be directly disassembled and maintained or replaced if the automatic pressure relief fails.

[0039] The elastic member 4 has a deformation amount, which can apply the elastic force of the elastic member 4 to the sealing assembly 3 and provide a preset pressure value for the safety valve. In the present embodiment, the elastic member 4 can be selected as a spring. In other embodiments, the elastic member 4 can also be made of other types of elastic bodies such as rubber columns.

[0040] Further, as shown in Figure 2 , the valve body 1 is also provided with a mounting cavity 13 for mounting the sealing assembly 3. In the present embodiment, the mounting cavity 13 is coaxially and communicatively arranged with the inner cavity 11, and the inner cavity 11 is vertically arranged with the pressure relief cavity 12. In other embodiments, the mounting cavity 13 and the inner cavity 11, and the inner cavity 11 and the pressure relief cavity 12 can also be communicatively arranged at other angles, as long as they can achieve the pressure relief process, which is not specifically limited here.

[0041] Specifically, as shown in Figure 2 , the sealing assembly 3 includes a sealing seat 31 and a sealing member 32. The sealing member 32 is connected to the bottom of the sealing seat 31, and the sealing member 32 can be sealed to the outlet of the inner cavity 11. The end of the sealing seat 31 away from the sealing member 32 is a free end 311 and is provided through the valve cover 2. The sealing member 32 is used to seal the inner cavity 11, and the sealing seat 31 is used to connect and drive the sealing member 32 to move. The sealing member 32 has elasticity and can be made of rubber material. The sealing member 32 is generally bowl-shaped, one end of which is fixed in the end face under the extrusion and fixation of the valve body 1 and the fixing member, and the other end is fixedly connected with the sealing seat 31. The sealing member 32 is sleeved outside the sealing seat 31, and the part of the sealing member 32 sleeved on the sealing seat 31 can be deformed under the driving of the sealing seat 31, so as to realize the mutual isolation or communication of the inner cavity 11 and the pressure relief cavity 12.

[0042] In the embodiment, the sealing seat 31 and the sealing member 32 are separated from each other, and are two components. The sealing member 32 is fixedly connected to the sealing seat 31 by means of glue fixing. In other alternative embodiments, the sealing member 32 can also be fixedly connected to the sealing seat 31 by means of riveting, vacuum adsorption or other means. In other alternative embodiments, the sealing seat 31 and the sealing member 32 can also be integrally formed.

[0043] As shown in Figure 2 , the sealing seat 31 is provided with an inner hole 312. By providing the inner hole 312 in the sealing seat 31, the weight of the sealing seat 31 can be reduced, a rapid and stable pressure relief process can be achieved, and material costs can be saved.

[0044] Further, the inner hole 312 extends through the sealing seat 31 in the axial direction away from one end of the free end 311, and the free end 311 is closed. That is, the inner hole 312 does not extend through the free end 311. By closing the free end 311, the inner hole 312 can be blocked to prevent dirt from entering the inner hole 312 and corroding the sealing member 32.

[0045] As shown in Figure 2 , the top end of the valve cover 2 is provided with a through hole 21, and the sealing seat 31 comprises a first guide portion 313. The bottom end of the first guide portion 313 is connected to the sealing member 32, and the top end of the first guide portion 313 is the free end 311 and is arranged in the through hole 21. When the sealing seat 31 moves up and down, the first guide portion 313 and the through hole 21 are in sliding fit, which plays a role of movement guide, so that the sealing seat 31 can only move in the axial direction, ensuring smooth movement of the sealing seat 31 and achieving rapid and stable pressure relief.

[0046] In an alternative embodiment, when the safety valve is in an open state, the free end 311 is arranged in the through hole 21 but does not exceed the upper end surface of the valve cover 2. In another alternative embodiment, when the safety valve is in an open state, the free end 311 can also be arranged in the through hole 21 and slightly higher than the upper end surface of the valve cover 2.

[0047] Further, the sealing seat 31 further comprises a second guide portion 314, and the second guide portion 314 is annularly arranged on the side of the first guide portion 313. The second guide portion 314 and the inner cavity 11 of the valve cover 2 are in sliding fit. When the sealing seat 31 moves up and down, the second guide portion 314 and the inner cavity 11 of the valve cover 2 are in sliding fit, which also plays a role of movement guide, so that the sealing seat 31 can only move in the axial direction, further ensuring smooth movement of the sealing seat 31 and achieving rapid and stable pressure relief.

[0048] In the embodiment, as shown in Figure 2As shown, the sealing seat 31 is provided with a second accommodating groove 315 which is circumferentially arranged in the sealing seat 31, the second accommodating groove 315 is located between the first guide part 313 and the second guide part 314, the elastic member 4 is sleeved on the first guide part 313, and the bottom end of the elastic member 4 is accommodated in the second accommodating groove 315 and abuts against the groove bottom of the second accommodating groove 315. In this way, a part of the bottom end of the elastic member 4 is located in the second accommodating groove 315, and thus the length of the part of the elastic member 4 which is located outside the second accommodating groove 315 is shortened correspondingly, so that the design length of the valve cover 2 can be reduced, and the entire safety valve is more miniaturized, which is beneficial to cost reduction and installation of the product.

[0049] Further, as shown, Figure 2 the valve cover 2 is provided with a first accommodating groove 22, and the end of the elastic member 4 which is away from the sealing assembly 3 is accommodated in the first accommodating groove 22. In this way, a part of the top end of the elastic member 4 is located in the first accommodating groove 22, and thus the length of the part of the elastic member 4 which is located outside the first accommodating groove 22 and the second accommodating groove 315 is further shortened, so that the design length of the valve cover 2 is further reduced, and the entire safety valve is more miniaturized, which is beneficial to cost reduction and installation of the product.

[0050] Optionally, in the embodiment, the inner wall of one end of the valve body 1 is provided with an internal thread, the outer periphery of the valve cover 2 is provided with an external thread, and the valve cover 2 is threadedly connected with the valve body 1 through the external thread and the internal thread, so as to realize the close connection between the valve cover 2 and the valve body 1. In other embodiments, the valve cover 2 and the valve body 1 can also be fixed with each other by using other connection modes such as welding, check ring connection, riveting, glue fixing and the like, which are not specifically limited here.

[0051] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A handleless safety valve, characterized in that, include: The valve body (1) has an inner cavity (11) and a pressure relief cavity (12) communicating with the inner cavity (11); Valve cover (2) is connected to one end of the valve body (1); A sealing assembly (3) is inserted into the valve body (1) and can move relative to the valve body (1) to control the opening and closing between the inner cavity (11) and the pressure relief chamber (12). One end of the sealing assembly (3) can seal the outlet of the inner cavity (11), and the other end is set as a free end (311). An elastic element (4) is attached to the sealing assembly (3) at one end and to the valve cover (2) at the other end.

2. The handleless safety valve according to claim 1, characterized in that, The sealing assembly (3) includes a sealing seat (31) and a sealing element (32). The sealing element (32) is connected to the bottom of the sealing seat (31) and can seal the outlet of the inner cavity (11). The end of the sealing seat (31) away from the sealing element (32) is the free end (311) and passes through the valve cover (2).

3. The handleless safety valve according to claim 2, characterized in that, The sealing seat (31) has an inner hole (312).

4. The handleless safety valve according to claim 3, characterized in that, The inner hole (312) extends axially through one end of the sealing seat (31) away from the free end (311), and the free end (311) is closed.

5. The handleless safety valve according to claim 2, characterized in that, The valve cover (2) has a through-hole (21) at its top end. The sealing seat (31) includes a first guide (313), the bottom end of which is connected to the sealing element (32). The top end of the first guide (313) is the free end (311) and passes through the through-hole (21).

6. The handleless safety valve according to claim 5, characterized in that, The sealing seat (31) further includes a second guide portion (314), which is arranged around the periphery of the first guide portion (313), and the second guide portion (314) slides in cooperation with the inner cavity (11) of the valve cover (2).

7. The handleless safety valve according to claim 6, characterized in that, The sealing seat (31) has a second receiving groove (315) inside. The second receiving groove (315) is located between the first guide part (313) and the second guide part (314). The elastic member (4) is fitted outside the first guide part (313), and the bottom end of the elastic member (4) is received in the second receiving groove (315).

8. The handleless safety valve according to claim 1, characterized in that, The valve cover (2) has a first receiving groove (22) inside, and the end of the elastic member (4) away from the sealing assembly (3) is received in the first receiving groove (22).

9. The handleless safety valve according to claim 1, characterized in that, The valve body (1) is also provided with an installation cavity (13) for installing the sealing assembly (3). The installation cavity (13) is coaxially connected with the inner cavity (11), and the inner cavity (11) is perpendicular to the pressure relief cavity (12).

10. The handleless safety valve according to claim 1, characterized in that, The valve body (1) has an internal thread on one end of its inner wall, and the valve cover (2) has an external thread on its outer periphery. The valve cover (2) is threadedly connected to the valve body (1) through the external thread.

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