CN210600425U

CN210600425U - Back flushing device for exhaust valve

Info

Publication number: CN210600425U
Application number: CN201921313007.3U
Authority: CN
Inventors: 王志坚
Original assignee: Tianjin Krs Valve Co ltd
Current assignee: Tianjin Krs Valve Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-22
Anticipated expiration: 2029-08-13

Abstract

The utility model provides a back washing device for an exhaust valve, which comprises a first valve body, a second valve body, a filter plate, a back washing device, an upper guide frame, a lower guide frame, a guide post and a valve clack, the bottom of the first valve body is connected to the upper part of the second valve body through a filter plate, the back washing device is fixedly connected to one side of the first valve body, the cross section of the second valve body is of a Chinese character 'zhong' structure, an upper guide frame is fixedly arranged on the upper part of the inner wall of the second valve body, a lower guide frame is fixedly arranged on the lower part of the inner wall of the second valve body, the upper guide frame is connected with the lower guide frame through a guide post, the valve clack is sleeved on the guide post, and the back washing device comprises a first pipe, a stop valve, a second pipe and a micro exhaust valve, wherein the first pipe is connected with the middle part of the second pipe through the stop valve, one end of the second pipe is connected to one side of the first valve body, and the other end of the second pipe is connected to the micro exhaust valve. The utility model discloses can guarantee the smoothness nature that the valve leads to water, avoid blockking up.

Description

Back flushing device for exhaust valve

Technical Field

The utility model belongs to the valve field especially relates to back washing unit for exhaust valve.

Background

The liquid flowing in the pressure pipe has a sudden change in flow rate for some reason (sudden closing of a valve, sudden stopping of a water pump, sudden opening and closing of a guide vane, etc.), and an alternating change in which the pressure is suddenly increased or decreased due to the inertia of the liquid, that is, a pressure wave, which is called a water hammer. Because the inner wall of the pipeline is smooth, water flows freely. When the opened valve is suddenly closed or the water pump is suddenly stopped, the follow-up water flow continues to flow under the action of inertia, after the flow is stopped, the water in the pipeline reversely flows back, at the moment, great impact force and water pressure can be generated on the water pump, the valve and the pipeline, and a destructive effect is generated. The water hammer effect is extremely destructive: too high a pressure will cause the pipe to break, whereas too low a pressure will cause the pipe to collapse and may also damage valves and pumps etc. Because the aquatic contains a large amount of impurity, so can install the filter screen between the valve and be used for filtering impurity, but the time is of a specified duration, and impurity can cause the jam to the mesh of filter screen, influences the circulation of water.

Disclosure of Invention

In view of this, the present invention provides a back washing device for an exhaust valve to wash a clogged filter screen, so as to restore the mesh of the filter screen to be smooth and ensure the circulation of water.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the back flushing device for the exhaust valve comprises a first valve body, a second valve body, a filter plate, a back flushing device, an upper guide frame, a lower guide frame, a guide column and a valve clack,

the bottom of the first valve body is connected to the upper part of the second valve body through a filter plate, the back washing device is fixedly connected to one side of the first valve body,

the cross section of the second valve body is of a Chinese character 'zhong' structure, the upper part of the inner wall of the second valve body is fixedly provided with an upper guide frame, the lower part of the inner wall of the second valve body is fixedly provided with a lower guide frame, the upper guide frame is connected with the lower guide frame through a guide post, the valve clack is sleeved on the guide post and slides relative to the guide post,

the back washing device comprises a first pipe, a stop valve, a second pipe and a micro exhaust valve, wherein the first pipe is connected with the middle of the second pipe through the stop valve, one end of the second pipe is connected to one side of the first valve body, and the other end of the second pipe is connected to the micro exhaust valve.

Furthermore, the structure of the micro exhaust valve is the same as that of the backwashing device.

Furthermore, the first valve body and the second valve body are fixedly connected through bolts.

Furthermore, the valve clack is of an arc-shaped structure, a plurality of through holes are formed in the valve clack, and the opening direction of the through holes is perpendicular to the tangent line of the valve clack.

Furthermore, sealing rubber pads are arranged at two ends of the valve clack.

Furthermore, a limiting block is arranged on the guide post.

Compared with the prior art, back washing unit for blast gate have following advantage:

(1) back flush unit for blast gate, can wash the filter screen that is stopped up by the magazine, guarantee the unblocked of filter screen, and then guarantee the unblocked of rivers.

(2) Back flush unit for blast gate, direct and be responsible for the net and communicate, utilize the water pressure of main pipe net effectual to wash the filter.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a back washing device for an exhaust valve according to an embodiment of the present invention.

Description of reference numerals:

1-valve body number one; 2-valve body II; 3-a filter plate; 4-a backwashing device; 41-first pipe; 42-a stop valve; 43-second tube; 44-micro vent valve; 5-upper guide frame; 6-a lower guide frame; 7-a guide post; 8-valve clack.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The back flushing device for the exhaust valve is shown in figure 1 and comprises a first valve body 1, a second valve body 2, a filter plate 3, a back flushing device 4, an upper guide frame 5, a lower guide frame 6, a guide column 7 and a valve clack 8,

the bottom of the first valve body 1 is connected to the upper part of the second valve body 2 through a filter plate 3, the back washing device 4 is fixedly connected to one side of the first valve body 1,

the cross section of the second valve body 2 is of a Chinese character 'zhong' structure, the upper part of the inner wall of the second valve body 2 is fixedly provided with an upper guide frame 5, the lower part of the inner wall of the second valve body 2 is fixedly provided with a lower guide frame 6, the upper guide frame 5 is connected with the lower guide frame 6 through a guide post 7, the valve clack 8 is sleeved on the guide post 7 and slides relative to the guide post 7,

the back washing device 4 comprises a first pipe 41, a stop valve 42, a second pipe 43 and a micro exhaust valve 44, wherein the first pipe 41 is connected with the middle part of the second pipe 43 through the stop valve 42, one end of the second pipe 43 is connected to one side of the first valve body 1, and the other end of the second pipe 43 is connected to the micro exhaust valve 44.

The structure of the micro exhaust valve 44 is the same as that of the backwashing device 4.

The first valve body 1 and the second valve body 2 are fixedly connected through bolts.

Valve clack 8 is the arc structure, be equipped with a plurality of through-holes on the valve clack 8, the opening direction of through-hole is perpendicular with valve clack 8's tangent line, and when water assaulted to valve clack 8, water can form the water column of correlation through the through-hole, weakens the impact force of water.

The both ends of valve clack 8 are equipped with sealed cushion, when water assaults valve clack 8, improve the leakproofness between valve clack 8 and No. two valve bodies 2.

And a limiting block is arranged on the guide post 7, and when the valve clack 8 loses the impulsive force of water and moves downwards, the inner wall of the second valve body 2 is impacted.

Back flush unit for exhaust valve, theory of operation, when rivers through No. 2 valve bodies, curved valve clack 8 can weaken the water hammer that forms, and water flows to filter 3 through valve clack 8, and filter 3 filters the impurity in rivers, but impurity can have on filter 3 to remain, opens stop valve 42, and the net normal water of being responsible for can wash filter 3, and the impurity of remaining on filter 3 can be washed back in former pipeline.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Back flush device for exhaust valve, its characterized in that: including a valve body (1), No. two valve bodies (2), filter (3), back flush unit (4), go up leading truck (5), leading truck (6), guide post (7) and valve clack (8) down, No. one valve body (1) bottom is connected to No. two valve body (2) upper portions through filter (3), back flush unit (4) fixed connection is to valve body (1) one side No. two, No. two valve body (2) transversal style of calligraphy structure of personally submitting, No. two valve body (2) inner wall upper portion fixed mounting go up leading truck (5), and No. two valve body (2) inner wall lower part fixed mounting is down leading truck (6), goes up leading truck (5) and is connected with leading truck (6) down through guide post (7), valve clack (8) cup joint on guide post (7) to relative guide post (7) slide, back flush unit (4) include No. one pipe (41), Stop valve (42), No. two pipe (43) and trace discharge valve (44), No. one pipe (41) are connected through stop valve (42) and No. two pipe (43) middle part, and No. two pipe (43) one end is connected to valve body (1) one side, and No. two pipe (43) other end is connected to trace discharge valve (44).

2. The back-flushing device for an exhaust valve according to claim 1, characterized in that: the structure of the micro exhaust valve (44) is the same as that of the backwashing device (4).

3. The back-flushing device for an exhaust valve according to claim 1, characterized in that: the first valve body (1) is fixedly connected with the second valve body (2) through bolts.

4. The back-flushing device for an exhaust valve according to claim 1, characterized in that: the valve clack (8) are of an arc-shaped structure, a plurality of through holes are formed in the valve clack (8), and the opening direction of the through holes is perpendicular to the tangent line of the valve clack (8).

5. The back-flushing device for an exhaust valve according to claim 1, characterized in that: and sealing rubber pads are arranged at two ends of the valve clack (8).

6. The back-flushing device for an exhaust valve according to claim 1, characterized in that: and a limiting block is arranged on the guide post (7).