CN219827844U - Safety valve for online replacement of filter - Google Patents

Safety valve for online replacement of filter Download PDF

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Publication number
CN219827844U
CN219827844U CN202321287381.7U CN202321287381U CN219827844U CN 219827844 U CN219827844 U CN 219827844U CN 202321287381 U CN202321287381 U CN 202321287381U CN 219827844 U CN219827844 U CN 219827844U
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CN
China
Prior art keywords
valve
cylindrical
filter screen
valve body
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321287381.7U
Other languages
Chinese (zh)
Inventor
陈海耀
陈志坚
陈海帆
陈庆通
张翠胜
潘国良
王兴州
郭建林
徐再付
黄振海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shuangtai Valve Co ltd
Original Assignee
Shuangtai Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shuangtai Valve Co ltd filed Critical Shuangtai Valve Co ltd
Priority to CN202321287381.7U priority Critical patent/CN219827844U/en
Application granted granted Critical
Publication of CN219827844U publication Critical patent/CN219827844U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a safety valve for online filter replacement, which comprises a valve body, a valve seat, a valve clack, a valve cover, a guide sleeve and a pressure setting device, wherein the center lines of inlet and outlet channels of the valve body are overlapped, and the valve seat is arranged on a platform positioned at one side of an outlet channel between the inlet and outlet channels of the valve body; the method is characterized in that: the filter is arranged in the valve body inlet channel, the cylindrical filter screen is arranged in the cylindrical cavity of the valve body inlet channel by the sealing cover, the filter and the valve body form an integrated structure, the equipment installation quantity and the installation space are reduced, the online cleaning and the replacement of the filter are realized, and the filter has the advantages of small product installation space, convenient cleaning and replacement of the filter and the like.

Description

Safety valve for online replacement of filter
Technical Field
The utility model belongs to the field of valves, and particularly relates to a spring type safety valve.
Background
The safety valve is an overpressure protection device for the pressure vessel or the medium delivery line. The spring type safety valve controls the opening and closing pressure of the valve clack by using the spring set pressure. When the inlet pressure of the valve body is smaller than the set pressure of the spring, the valve clack is pushed by the spring force to close; when the inlet pressure of the valve body exceeds the set pressure of the spring, the medium pressure overcomes the force of the spring to push the valve clack to open and release the inlet medium pressure, so that the safety accident caused by overpressure is prevented. However, in a pipe or a container having a large content of medium impurities, a filter is generally installed in a pipe on an inlet side of a valve body in order to prevent leakage of impurities due to adhesion between a valve flap and a sealing surface of a valve seat. The main disadvantages are: the installation quantity and the installation space of the equipment are increased, the filter is required to be detached from the pipeline for cleaning or replacement, and the cleaning and replacement of the filter are troublesome.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the safety valve capable of reducing the installation quantity and the installation space of equipment, cleaning and replacing the filter on line, and having small installation space of products and convenient cleaning and replacing of the filter.
The technical scheme for realizing the purpose of the utility model is as follows:
a safety valve for online filter replacement comprises a valve body, a valve seat, a valve clack, a valve cover, a guide sleeve and a pressure setting device, wherein the center lines of inlet and outlet channels of the valve body are overlapped, and the valve seat is arranged on a platform positioned at one side of an outlet channel between the inlet and outlet channels of the valve body; the method is characterized in that: a filter is arranged in the inlet channel of the valve body and consists of a filter body, a cylindrical filter screen and a sealing cover; the filter body and the valve body are integrally cast and formed, a cylindrical cavity matched with the cylindrical filter screen is formed, a limiting step is formed at the inlet of the cylindrical cavity, the end face of the cylindrical filter screen, which is positioned at the inlet side, is pressed on the limiting step, the other end of the cylindrical filter screen is installed in the cylindrical cavity by a sealing cover, the outer cylindrical surfaces at the two ends of the cylindrical filter screen are movably matched with the inner wall of the cylindrical cavity, and a gap is formed between the outer cylindrical surface at the middle part of the cylindrical filter screen and the inner wall of the cylindrical cavity.
Preferably, a flushing hole is arranged in the middle of the sealing cover, and a screw plug is arranged on the flushing hole.
Preferably, metal rings are arranged at two ends of the cylindrical filter screen, a disc spring is arranged between the sealing cover and the end face of the metal ring, an axial limiting rib is arranged on the inner wall of the inlet side of the cylindrical cavity, and an axial limiting groove matched with the axial limiting rib is formed in the outer circular surface of the metal ring.
Preferably, the center line of the cylindrical filter screen and the center line of the inlet channel form an acute angle of 30-45 degrees.
Compared with the prior art, the utility model has the beneficial effects that: the filter adopts the cylinder filter screen to install in the cylinder chamber of valve body import passageway by the closing cap, constitutes integrated structure with filter and valve body, has reduced equipment installation quantity and installation space, has realized filter online cleaning, has advantages such as product installation space is little, filter washs and change convenience.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1 valve body, 2 valve seat, 3 valve clack, 4 recoil dish, 5 uide bushing, 6 valve gap, 7 metal ring, 8 cylinder filter screen, 9 closing cap, 10 dish spring, 11 plugs.
Description of the embodiments
The safety valve for online filter replacement shown in fig. 1 comprises a valve body 1, a valve seat 2, a valve clack 3, a valve cover 6, a guide sleeve 5 and a pressure setting device, wherein the center line of an inlet channel and an outlet channel of the valve body 1 are overlapped and are arranged on a pressure pipeline through an inlet side flange, the valve seat 2 is arranged on a platform positioned at one side of an outlet channel between the inlet channel and the outlet channel of the valve body 1, the inlet channel and the outlet channel of the valve body 1 adopt a lower inlet structure and an upper outlet structure, a sealing surface on the upper plane of the valve seat 2 and a sealing surface in the lower plane of the valve clack 3 are matched with each other to form a sealing pair, the valve clack 3 is arranged in a guide hole of the guide sleeve 5 in a guide way through a recoil disc 4, the center of the upper end surface of the valve clack is connected with the pressure setting device, and the pressure setting device adopts a spring pressure setting device and is formed by installing a spring, a ejector rod and an adjusting screw sleeve in an inner cavity of the valve cover 6; the method is characterized in that: a filter is arranged in an inlet channel of the valve body 1 and consists of a filter body, a cylindrical filter screen 8 and a sealing cover 9; the filter body and the valve body 1 are integrally cast and formed, a cylindrical cavity matched with the cylindrical filter screen 8 is formed, a limit step is formed at the inlet of the cylindrical cavity, the end face of the cylindrical filter screen 8, which is positioned at the inlet side, is pressed on the limit step, the other end of the cylindrical filter screen 8 is installed in the cylindrical cavity through a sealing cover 9, the axial movement of the cylindrical filter screen 8 is limited by the sealing cover 9 and the limit step, the outer cylindrical surfaces at the two ends of the cylindrical filter screen 8 are movably matched with the inner wall of the cylindrical cavity, the sealing cover 9 is fixedly and hermetically installed on the valve body 1 through screws, the cylindrical filter screen 8 can be assembled and disassembled after the sealing cover 9 is opened for cleaning or replacement, a gap is formed between the outer cylindrical surface at the middle part of the cylindrical filter screen 8 and the inner wall of the cylindrical cavity, and a medium flows into the inlet of the valve seat 2 after being filtered by the cylindrical filter screen 8, so that leakage caused by the fact that the valve clack 3 is not tightly closed on the sealing surface of the valve seat 2 is avoided.
A flushing hole is arranged in the middle of the sealing cover 9, a screw plug 11 is arranged on the flushing hole, the screw plug 11 is detached, impurities in the cylindrical filter screen 8 can be discharged, and the cylindrical filter screen 8 is flushed on line.
The two ends of the cylindrical filter screen 8 are provided with metal rings 7, a disc spring 10 is arranged between the sealing cover 9 and the end face of the metal rings 7, the cylindrical filter screen 8 is elastically pressed and installed in the cylindrical cavity of the valve body 1, the cylindrical filter screen 8 is prevented from generating noise due to axial movement of medium pressure, the inner wall of the inlet side of the cylindrical cavity is provided with axial limiting ribs, and the outer circular surface of the metal rings 7 is provided with axial limiting grooves matched with the axial limiting ribs, so that the cylindrical filter screen 8 is prevented from generating noise due to rotation of medium thrust.
An acute angle of 30-45 degrees is formed between the central line of the cylindrical filter screen 8 and the central line of the inlet channel of the valve body 1, so that the cylindrical filter screen 8 is obliquely installed downwards in the medium flowing direction, and the cylindrical filter screen 8 is convenient to assemble and disassemble.

Claims (5)

1. The safety valve for online filter replacement comprises a valve body (1), a valve seat (2), a valve clack (3), a valve cover (6), a guide sleeve (5) and a pressure setting device, wherein the center lines of inlet and outlet channels of the valve body (1) are coincident, and the valve seat (2) is arranged on a platform positioned on one side of an outlet channel between the inlet and outlet channels of the valve body (1); the method is characterized in that: a filter is arranged in an inlet channel of the valve body (1), and consists of a filter body, a cylindrical filter screen (8) and a sealing cover (9); the filter body and the valve body (1) are integrally cast and formed, a cylindrical cavity matched with the cylindrical filter screen (8) is formed, a limiting step is formed in the inlet of the cylindrical cavity, the end face of the cylindrical filter screen (8) positioned at the inlet side is pressed on the limiting step, the other end of the cylindrical filter screen is installed in the cylindrical cavity through a sealing cover (9), the outer cylindrical surfaces at the two ends of the cylindrical filter screen (8) are movably matched with the inner wall of the cylindrical cavity, and a gap is formed between the outer cylindrical surface at the middle part of the cylindrical filter screen (8) and the inner wall of the cylindrical cavity.
2. The on-line filter replacement safety valve according to claim 1, wherein: a flushing hole is arranged in the middle of the sealing cover (9), and a screw plug (11) is arranged on the flushing hole.
3. The safety valve for online replacement of filters according to claim 1 or 2, characterized in that: the two ends of the cylindrical filter screen (8) are provided with metal rings (7), a disc spring (10) is arranged between the sealing cover (9) and the end face of the metal rings (7), the inner wall of the inlet side of the cylindrical cavity is provided with axial limiting ribs, and the outer circular surface of the metal rings (7) is provided with axial limiting grooves mutually matched with the axial limiting ribs.
4. The safety valve for online replacement of filters according to claim 1 or 2, characterized in that: an acute angle of 30-45 degrees is formed between the central line of the cylindrical filter screen (8) and the central line of the inlet channel of the valve body (1).
5. A safety valve for on-line replacement of a filter according to claim 3, wherein: an acute angle of 30-45 degrees is formed between the central line of the cylindrical filter screen (8) and the central line of the inlet channel of the valve body (1).
CN202321287381.7U 2023-05-25 2023-05-25 Safety valve for online replacement of filter Active CN219827844U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321287381.7U CN219827844U (en) 2023-05-25 2023-05-25 Safety valve for online replacement of filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321287381.7U CN219827844U (en) 2023-05-25 2023-05-25 Safety valve for online replacement of filter

Publications (1)

Publication Number Publication Date
CN219827844U true CN219827844U (en) 2023-10-13

Family

ID=88284611

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321287381.7U Active CN219827844U (en) 2023-05-25 2023-05-25 Safety valve for online replacement of filter

Country Status (1)

Country Link
CN (1) CN219827844U (en)

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