CN221374599U

CN221374599U - Safety valve

Info

Publication number: CN221374599U
Application number: CN202323325590.9U
Authority: CN
Inventors: 薛显坤; 韩岁平; 李芳�; 支宪
Original assignee: Dalian Drepp Environmental Technology Co ltd
Current assignee: Dalian Drepp Environmental Technology Co ltd
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-07-19
Anticipated expiration: 2033-12-07

Abstract

The utility model discloses a safety valve, relates to the technical field of safety valves, in particular to the technical field of spring safety valves, and comprises a valve cover, a pressing sleeve, a valve cover, a valve clack, a valve body, a spring, a valve seat, a guide sleeve, a silencing device, a filtering device and the like. The utility model ensures the cleanliness of the sealing surfaces of the valve clack and the valve seat, ensures the functional stability of the safety valve, prolongs the service life of the safety valve by more than 3 years, solves the working condition requirements of low applicable pressure, low temperature and single medium of the cast valve, improves the universality and adaptability of the valve, opens up the sales channel, and effectively solves the problem that the noise is too large during pressure relief to influence the normal life of surrounding residents and workers. The device has the advantages of simple structure, low cost, very large effect, low structural cost and very obvious effect, and effectively avoids the phenomenon that the safety valve is not normally depressurized and is automatically closed after the pressure is relieved due to the dislocation of the spring.

Description

Safety valve

Technical Field

The utility model relates to the technical field of safety valves, in particular to the technical field of spring safety valves

Background

The spring type safety valve overcomes the pressure of a medium by adjusting the force of the spring to achieve sealing, when the force of the spring is larger than the normal pressure of the medium, the spring is in a closed state, when the pressure of the medium exceeds the set pressure, the spring is compressed to enable the sealing surface of the valve clack to be separated, the safety valve is automatically opened, and then the valve is discharged in full quantity; when the pressure of the medium is reduced to a normal value, the spring force is used for overlapping the sealing surface of the valve clack and the sealing surface of the valve seat, and the safety valve is automatically closed.

The cleanliness of the sealing surfaces of the valve clack and the valve seat in the prior art seriously affects the tightness and the safety of the safety valve, and meanwhile, the safety valve cannot be normally discharged and cannot be automatically closed due to poor positioning of a spring. When the gas is discharged, the normal life of surrounding residents and workers is seriously influenced by the fact that the pressure is overlarge and the noise is overlarge at the moment of pressure relief.

Therefore, a relief valve is proposed to solve the above-mentioned problems.

Disclosure of utility model

(One) solving the technical problems

The utility model aims to provide a safety valve, which solves the problems of poor sealing performance and incapability of normal use of the safety valve caused by the cleanliness of sealing surfaces of a valve clack and a valve seat in the background of the prior art, and meanwhile, the safety valve cannot be normally discharged and cannot be automatically closed due to poor positioning of a spring. When the gas is discharged, the normal life of surrounding residents and workers is seriously influenced by the fact that the pressure is overlarge and the noise is overlarge at the moment of pressure relief.

(II) technical scheme

In order to achieve the above object, the present utility model is realized by the following technical scheme: a safety valve comprises a valve body, wherein threads are arranged at the material inlet and outlet ends of the valve body, a pipe joint is connected with the valve body through a joint nut, a filter device is welded on the pipe joint at the medium inlet end, and a silencing device is welded on the pipe joint at the medium outlet discharge port. The valve seat is connected with the pipe joint through a joint nut, and the pipe joint is welded on the pipeline or the container. The valve seat is connected with the valve clack through valve clack filler, the guide sleeve is assembled outside the valve clack, and the spring is connected with the valve clack and the pressing sleeve through the upper and lower positioning blocks to be pressed; the filter device is welded with the pipe joint through the fixing ring, and the filter element of the filter device can be replaced at any time. The silencing device passes through solid fixed ring and coupling welded connection, and silencing device silk screen can be changed at any time, can not influence the emission of medium because of the jam.

Preferably, the filter device is designed, and the filter device can effectively avoid the abrasion and leakage of the sealing surface caused by the entry of impurities and foreign matters into the valve. The cleanliness of the sealing surfaces of the valve clack and the valve seat is ensured. Ensuring the function of the safety valve.

Preferably, the silencer is designed, noise pollution caused by pressure relief of the safety valve can be effectively reduced, and the problem that noise is too much to affect normal life of surrounding residents and workers during pressure relief is effectively solved. The device has simple structure and low cost, and plays a very great role.

Preferably, the valve body is integrally forged, and is formed by a numerical control machining center, so that the defects of low applicable pressure and less applicable medium of valve body castings are overcome. The pressure and temperature are higher, and the applicable medium is wider.

Preferably, threads are designed at the inlet and outlet ends of the medium, the pipe joint is connected with the valve body through the joint nut, the pipe joint is welded with a pipeline or a container, and the safety valve can be connected with or detached from the pipe joint only by rotating the joint nut when the safety valve is installed and detached, so that the safety valve is simple and convenient to operate.

Preferably, the positioning block is designed, and the spring is connected and pressed with the valve body through the upper positioning block, the lower positioning block, the valve clack and the pressing sleeve. The positioning block can accurately position, so that spring dislocation is effectively avoided, and the safety valve cannot normally release pressure and is automatically closed after pressure release

(III) beneficial effects

Compared with the prior art, the utility model provides a safety valve, which has the following beneficial effects:

1. According to the safety valve, the filtering device is designed at the material inlet end, so that the cleanliness of the sealing surfaces of the valve clack and the valve seat is guaranteed, the functional stability of the safety valve is guaranteed, and the service life of the safety valve can be prolonged by more than 3 years.

2. The safety valve body is integrally forged, and is formed by a numerical control machining center. The valve solves the working condition requirements of low applicable pressure, low temperature and single medium of the cast valve, improves the universality and adaptability of the valve and opens up a sales channel.

3. This relief valve has designed silencing device, and noise pollution that noise reduction device can cause when effectual reduction relief valve pressure release, the noise is too big when effectually having solved the pressure release influences peripheral resident and workman's normal life. The device has simple structure and low cost, and plays a very great role.

4. This relief valve has designed the locating piece, ensures that the spring can be accurate fix a position, and the effectual relief valve that has avoided the spring dislocation to lead to can not normally release and self-closing behind the pressure release. The secondary structure has low cost and obvious effect.

Drawings

FIG. 1 is a block diagram of the present utility model

FIG. 2 is a block diagram of a component filter assembly according to the present utility model

FIG. 3 is a block diagram of the muffler assembly of the present utility model

Marked in fig. 1: the valve comprises a valve cover (1), a pressing sleeve (2), a positioning block (3), a sealing ring (4), a locking nut (5), a spring (6), a guide sleeve (8), a silencing device (9), a valve clack filler (10), a valve body (11), a sealing gasket (12), a valve seat (13), a joint nut (14), a sealing gasket (15), a pipe joint (16) and a silencing device (17)

The label in fig. 2: comprises (18) a fixing ring, (19) a filter element, (20) a compression ring and (21) a supporting piece

Marked in fig. 3: comprises (22) a fixing ring, (23) a silencing net, (24) a compression ring, (25) a fastening bolt and (26) a nut

Detailed Description

The following description of the embodiments of the present utility model will be made with reference to the accompanying drawings, in which embodiments of the present utility model are shown, but in which embodiments are shown, by way of illustration, only, and not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, a safety valve comprises a valve body (11) with threads on the upper end for connecting with a valve cover (1), and a sealing gasket (13) on the lower end for connecting with a valve seat (13) through threads. The medium discharge port is connected with the pipe joint (16) through a joint nut (14), and the silencing device (9) is welded on the pipe joint (16); the valve seat (13) is connected with the pipe joint (16) through the joint nut (14), the pipe joint is welded on a pipeline or a container, and the filtering device (17) is welded on the pipe joint (16); the valve seat (13) is connected with the valve clack (8) through a valve clack filler (9), the guide sleeve (7) is assembled outside the valve clack, and the spring (6) is connected with the valve clack (8) and the pressing sleeve (2) through the upper and lower positioning blocks (3) and is tightly pressed with the valve body (11); the filtering device (17) is characterized in that: the filter device is welded with the pipe joint (16) through the fixing ring, and the filter element of the filter device can be replaced at any time. The silencing device (9) is characterized in that: the silencing device is welded and connected with the pipe joint (16) through the fixing ring, and the silk screen of the silencing device can be replaced at any time, so that the medium discharge is not affected due to blockage.

Referring to fig. 2, a safety valve part filtering device is welded on a valve body through a fixing ring (18), a filter screen (20) is fixed on the fixing ring through an upper pressing ring (19) and a lower pressing ring (19), and a supporting piece (21) in the center of the filter screen is a strength supporting piece of the filtering device.

Referring to fig. 3, a muffler device for a safety valve part is shown, in which a pipe joint (16) is welded to a fixing ring (22), and a muffler net (23) is fixed to the fixing ring (22) by a pressing ring (24) and a nut (26) of a fastening bolt (25).

Working principle:

When the valve is used, the valve is connected with a pipe joint welded on the device through the threads at the inlet and outlet ends of the valve body through the joint nut, and the pressure sleeve is locked downwards through the locking nut to generate downward pressure to press the spring to compress, so that the set pressure is achieved. The pressure of the medium is overcome by adjusting the spring force to achieve sealing, when the spring force is larger than the normal pressure of the medium, the spring is in a closed state, when the pressure of the medium exceeds the set pressure, the spring is compressed, the sealing surface of the valve clack is separated, the safety valve is automatically opened, and then the full discharge is carried out; when the pressure of the medium is reduced to a normal value, the spring force again coincides the sealing surface of the valve clack with the sealing surface of the valve seat, and the safety valve is automatically closed

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Safety valve comprising a valve body (11), characterized in that: the upper end of the valve body (11) is provided with threads for connecting a valve cover (1), and the lower end of the valve body is connected with a valve seat (13) through the threads and is sealed by a sealing gasket (12); the medium discharge port is connected with the pipe joint (16) through a joint nut (14), and the silencing device (9) is welded on the pipe joint (16); the valve seat (13) is connected with the pipe joint (16) through the joint nut (14), the pipe joint is welded on a pipeline or a container, and the filtering device (17) is welded on the pipe joint (16); the valve seat (13) is connected with the valve clack (8) through a valve clack filler (10), the guide sleeve (7) is assembled outside the valve clack, and the spring (6) is connected with the valve clack (8) and the pressing sleeve (2) through the upper and lower positioning blocks (3) and is tightly pressed with the valve body (11); the filtering device (17) is characterized in that: the filter device is welded with the pipe joint (16) through the fixing ring, and the filter element of the filter device can be replaced at any time; the silencing device (9) is characterized in that: the silencing device is welded and connected with the pipe joint (16) through the fixing ring, and the silk screen of the silencing device can be replaced at any time, so that the medium discharge is not affected due to blockage.

2. A safety valve according to claim 1, wherein: the inlet and the outlet of the medium are designed with threads to connect the pipe joint (16) with the valve body (11) through the joint nut (14), and the disassembly and the maintenance are convenient.