CN215831174U

CN215831174U - Stop valve of filter

Info

Publication number: CN215831174U
Application number: CN202122303722.2U
Authority: CN
Inventors: 杨选辰; 杨珺凯; 杨选浩
Original assignee: Zhejiang Diantai Valve Industry Co ltd
Current assignee: Zhejiang Diantai Valve Industry Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-15
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to the field of stop valves, in particular to a filter stop valve which comprises a valve body, wherein a medium flow passage is arranged in the valve body, a valve cover is fixedly arranged at the upper end of the valve body through a bolt, a valve clack which is hermetically clamped in the medium flow passage and a filter screen which is positioned on the outer ring of the valve clack are arranged in the valve body, a valve rod is fixedly arranged on the top surface of the valve clack, the upper end of the valve rod extends to the upper part of the valve cover, a valve rod nut is fixedly arranged on the top surface of the valve cover, the upper end of the valve rod nut is in threaded connection with the valve rod, and a hand wheel is fixedly arranged at the top end of the valve rod through the hand wheel nut; the filter screen is arranged in the valve body middle cavity and surrounds the valve clack, so that the valve clack is filtered and protected when a medium flows through the valve middle cavity, and the service life of the valve can be effectively prolonged; on the other hand, when the medium pipeline needs to be used for filtering, the valve can be used as a filter when being fully opened, the filter does not need to be additionally arranged in the pipeline, and when the pipeline needs to be cut off, the valve can be used as a cut-off function after being closed.

Description

Stop valve of filter

Technical Field

The utility model relates to the field of stop valves, in particular to a filter stop valve.

Background

The stop valve is a tool which makes the sealing surface of the valve clack and the sealing surface of the valve seat tightly fit by the pressure of a valve rod to prevent medium from flowing, belongs to a forced sealing valve and is one of the most widely used valves. When the existing stop valve is used for a long time, impurities in fluid media flowing through the valve can be gradually attached to and accumulated on the valve middle cavity and the valve clack, so that the closing work of the valve clack is influenced, and the sealing performance and the service life of the valve are reduced.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a filter stop valve which can solve the technical problems that when the existing stop valve is used for a long time, impurities in fluid media flowing through a valve can be gradually attached and accumulated on a valve middle cavity and a valve clack, so that the closing work of the valve clack is influenced, the sealing performance of the valve is reduced, and the service life of the valve is prolonged.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a filter stop valve, includes the valve body, be provided with the medium runner in the valve body, there is the valve gap upper end of valve body through bolt fixed mounting, the inside valve clack that is provided with sealed card dress in the medium runner of valve body and being located the filter screen of valve clack outer lane, the top surface fixed mounting of valve clack has the valve rod, the upper end of valve rod extends to the top of valve gap, the top surface fixed mounting of valve gap has valve rod nut, just valve rod nut's upper end with valve rod threaded connection, the top of valve rod is through hand wheel nut fixed mounting hand wheel.

As a preferable technical scheme of the utility model, a winding gasket is hermetically installed at a joint of the valve body and the valve cover.

As a preferred technical scheme of the utility model, the filter screen is of a cylindrical structure, and the valve body and the valve cover are both internally provided with clamping grooves matched with the end parts of the filter screen.

As a preferred technical scheme of the utility model, the upper end of the valve cover is provided with a packing groove positioned on the outer ring of the valve rod, a lower packing and an upper packing are sequentially filled in the packing groove from bottom to top, the top end of the packing groove is provided with a packing pressing sleeve sleeved on the valve rod, and the top end of the packing pressing sleeve is provided with a packing pressing plate.

As a preferred technical scheme of the utility model, the packing pressing plate is provided with a loose joint bolt, the lower end of the loose joint bolt is movably connected with the valve cover through a pin, and the upper end of the loose joint bolt is locked and fixed with the packing pressing plate through a hexagon nut.

The utility model has the beneficial effects that:

according to the filter stop valve, the filter screen is arranged in the valve body middle cavity in a manner of surrounding the valve clack, so that the valve clack is filtered and protected when a medium flows through the valve middle cavity, impurities in the medium are prevented from being attached and accumulated on the valve clack to influence the sealing performance of the valve clack, and the service life of the valve can be effectively prolonged; on the other hand, when the medium pipeline needs to be used for filtering, the valve can be used as a filter when being fully opened, the filter does not need to be additionally arranged in the pipeline, and when the pipeline needs to be cut off, the valve can be used as a cut-off function after being closed.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1. a valve body; 2. a valve cover; 3. a valve flap; 4. a valve stem; 5. a filter screen; 6. winding the gasket; 7. lower filling; 8. filling; 9. a bolt; 10. a hand wheel nut; 11. loose joint bolts; 12. a pin; 13. a hexagonal nut; 14. pressing and sleeving the filler; 15. a packing press plate; 16. a valve stem nut; 17. a handwheel.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1, the filter stop valve provided by the utility model comprises a valve body 1, wherein a medium flow passage is arranged in the valve body 1, a valve cover 2 is fixedly arranged at the upper end of the valve body 1 through a bolt 9, a valve clack 3 which is hermetically clamped in the medium flow passage and a filter screen 5 which is positioned on the outer ring of the valve clack 3 are arranged in the valve body 1, a valve rod 4 is fixedly arranged on the top surface of the valve clack 3, the upper end of the valve rod 4 extends to the upper part of the valve cover 2, a valve rod nut 16 is fixedly arranged on the top surface of the valve cover 2, the upper end of the valve rod nut 16 is in threaded connection with the valve rod 4, and a hand wheel 17 is fixedly arranged at the top end of the valve rod 4 through a hand wheel nut 10.

And a winding gasket 6 is hermetically arranged at the joint of the valve body 1 and the valve cover 2, so that the sealing property of the joint of the valve body 1 and the valve cover 2 can be improved.

The filter screen 5 is the cylindrical structure, just the valve body 1 with the inside of valve gap 2 all be provided with the anastomotic draw-in groove of 5 tip of filter screen surrounds valve clack 3 through the filter screen 5 of cylinder, can carry out comprehensive filtration protection to valve clack 3, improves the filter effect, and the filter screen 5 of cylinder clamps between valve body 1 and valve gap 2 through the draw-in groove, and its installation is firm, receives the scouring ability reinforce, difficult not hard up damage, and filter screen 5 presss from both sides between valve body 1 and valve gap 2 simultaneously, and it dismantles and changes conveniently, intercepts when attaching to more impurity on filter screen 5, when influencing the valve velocity of flow, can unscrew bolt 9, separate valve body 1 and valve gap 2, can take out and change filter screen 5.

A packing groove located on the outer ring of the valve rod 4 is formed in the upper end of the valve cover 2, a lower packing 7 and an upper packing 8 are sequentially filled in the packing groove from bottom to top, a packing pressing sleeve 14 sleeved on the valve rod 4 is arranged at the top end of the packing groove, and a packing pressing plate 15 is arranged at the top end of the packing pressing sleeve 14; install loose joint bolt 11 on the pressure plate for packing 15, just the lower extreme of loose joint bolt 11 pass through pin 12 with 2 swing joint of valve gap, the upper end of loose joint bolt 11 pass through hexagon nut 13 with pressure plate for packing 15 locking is fixed, and wherein lower packing 7 is stainless steel wire + flexible graphite, and it is flexible graphite to go up packing 8, through the leakproofness of packing multiplicable valve rod 4 and valve gap 2 junction from top to bottom, prevents that seam crossing from seeping water.

Specifically, when the valve needs to be opened, the hand wheel 17 is rotated to drive the valve rod 4 to rotate, so that the valve rod 4 moves upwards under the screw thread transmission action of the valve rod nut 16, the valve clack 3 is further driven to move upwards, the medium flow channel is not sealed any more, the valve body 1 is conducted, the medium can flow through the valve, and at the moment, the filter screen 5 performs filtering protection on the valve clack 3 and simultaneously performs a filtering action on the medium flowing through the valve; when the medium needs to be cut off, the hand wheel 17 is rotated reversely, the valve clack 3 is driven to move downwards to reset, and the medium flow channel is sealed again.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a filter stop valve, includes valve body (1), its characterized in that, be provided with the medium runner in valve body (1), there is valve gap (2) upper end of valve body (1) through bolt (9) fixed mounting, valve body (1) inside is provided with sealed valve clack (3) and the filter screen (5) that are located in the medium runner valve clack (3) outer lane, the top surface fixed mounting of valve clack (3) has valve rod (4), the upper end of valve rod (4) extends to the top of valve gap (2), the top surface fixed mounting of valve gap (2) has valve rod nut (16), just the upper end of valve rod nut (16) with valve rod (4) threaded connection, the top of valve rod (4) is passed through hand wheel nut (10) fixed mounting and is had hand wheel (17).

2. A filter shut-off valve as defined in claim 1, wherein: and a winding gasket (6) is hermetically arranged at the joint of the valve body (1) and the valve cover (2).

3. A filter shut-off valve as defined in claim 1, wherein: the filter screen (5) is of a cylindrical structure, and the valve body (1) and the valve cover (2) are both internally provided with clamping grooves matched with the end parts of the filter screen (5).

4. A filter shut-off valve as defined in claim 1, wherein: the packing device is characterized in that a packing groove located on the outer ring of the valve rod (4) is formed in the upper end of the valve cover (2), a lower packing (7) and an upper packing (8) are sequentially filled in the packing groove from bottom to top, a packing pressing sleeve (14) sleeved on the valve rod (4) is arranged at the top end of the packing groove, and a packing pressing plate (15) is arranged at the top end of the packing pressing sleeve (14).

5. A filter shut-off valve according to claim 4, characterized in that: the packing press plate (15) is provided with a loose joint bolt (11), the lower end of the loose joint bolt (11) is movably connected with the valve cover (2) through a pin (12), and the upper end of the loose joint bolt (11) is locked and fixed with the packing press plate (15) through a hexagon nut (13).