Gate valve with filtering function

Abstract

A gate valve with a filtering function comprises a valve body, a valve rod and a gate plate, a valve cavity is formed in the valve body, a valve seat is arranged in the valve cavity, the valve rod extends into the valve cavity from the upper end of the valve body, and the gate plate is connected to the bottom end of the valve rod. Filter screens are arranged on the left and right side walls of the filter cage; the center of the flashboard sinks inwards to form a receding groove, the filter screen close to one side of the flashboard is provided with filter holes corresponding to the receding groove, and the filter screen and the edge of the flashboard are correspondingly provided with sealing rings; the filter hole diameter of the filter screen close to the inlet end of the two filter cages is greater than that of the filter screen close to the outlet end; sewage draining outlets are formed in the front side and the rear side of the valve body corresponding to the interval between the two filter screens of the filter cage; and sewage draining covers cover the sewage draining outlets.

Description

Technical Field

[0001] The utility model relates to the technical field of valve structures, in particular to a gate valve with a filtering function. Background Art

[0002] At present, during the use of gate valve body, the seal will be affected by the debris in the fluid. For this reason, people install a set of filters at the front end of the gate valve body, but it is difficult to replace and clean the filter due to the environment or the design of the installation space. In this case, debris often gets stuck between the gate and the valve body, affecting the seal and causing internal leakage. In this state for a long time, the rubber on the surface of the gate will also be damaged due to friction and extrusion with the debris, which will eventually cause the gate valve seal to fail or seal loosely, resulting in economic losses. Summary of the invention

[0003] In order to solve the above problems, the utility model provides the following solutions:

[0004] A gate valve with filtering function comprises a valve body, a valve stem and a gate plate, wherein a valve cavity is provided in the valve body, a valve seat is arranged in the valve cavity, the valve stem extends into the valve cavity from the upper end of the valve body, the bottom end of the valve stem is connected to the gate plate, installation grooves are respectively arranged in the valve cavity on the left and right sides of the gate plate along the left and right side walls of the gate valve, filter cages are arranged in the installation grooves, and filter screens are arranged on the left and right side walls of the filter cages; the gate plate is concave in the center to form a clearance groove, the filter screen close to one side of the gate plate is provided with filter holes corresponding to the clearance groove, and sealing rings are arranged corresponding to the filter screen and the gate plate edge; the filter hole diameters of the filter screens close to the inlet end of the two filter cages are larger than the filter hole diameters of the filter screens close to the outlet end; sewage outlets are arranged on the front and rear sides of the valve body corresponding to the interval between the two filter screens of the filter cages, and the sewage outlets are covered with sewage outlet covers.

[0005] Furthermore, a mounting seal ring is provided between the filter cage and the mounting groove.

[0006] Furthermore, the drain cover is connected to the valve body via fixing screws, and a sealing gasket is provided on one side of the drain cover facing the valve body.

[0007] Furthermore, the sewage outlet is opened from the middle of the valve body to the bottom of the valve body.

[0008] Furthermore, a handle is connected to the top end of the valve stem.

[0009] Furthermore, a valve cover is provided above the valve body, and the valve cover is connected to the valve body by means of a connecting screw and a nut, the bottom end of the connecting screw is rotatably connected to the top surface of the valve body, and the connecting screw passes through the bottom surface of the valve cover and is threadedly connected to the nut.

[0010] The beneficial effects of the utility model are:

[0011] A filter structure is provided in the valve body, through which the medium is filtered, and impurities can be collected in the filter cage. The impurities can be discharged by opening the drain cover and flushing with clean water, which is convenient for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0013] Figure 2 Schematic diagram of the external structure for practicality

[0014] 1. Valve body; 2. Valve stem; 3. Valve chamber; 4. Gate; 5. Filter cage; 6. Filter screen; 7. Give way groove; 8. Valve cover; 9. Handle; 10. Connecting screw; 11. Nut; 12. Drain cover. DETAILED DESCRIPTION

[0015] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0016] Example 1: Figure 1-Figure 2 As shown,

[0017] A gate valve with filtering function comprises a valve body 1, a valve stem 2 and a gate plate 4, wherein a valve cavity 3 is provided in the valve body 1, the valve stem 2 extends into the valve cavity 3 from the upper end of the valve body 1, and a gate plate 4 is connected to the bottom end of the valve stem 2, and installation grooves are respectively arranged along the left and right side walls of the gate plate 4 in the valve cavity 3 on the left and right sides of the gate plate 4, filter cages 5 are arranged in the installation grooves, and filter screens 6 are arranged on the left and right side walls of the filter cages 5; the gate plate 4 is concave in the center to form a clearance groove 7, and the filter screen 6 close to one side of the gate plate 4 is provided with filter holes corresponding to the clearance groove 7, and sealing rings are arranged on the filter screen 6 and the edge of the gate plate 4 correspondingly; the filter hole diameter of the filter screen 6 close to the inlet end of the two filter cages 5 is larger than the filter hole diameter of the filter screen 6 close to the outlet end; sewage outlets are arranged on the front and rear sides of the valve body 1 corresponding to the interval between the two filter screens 6 of the filter cages 5, and the sewage outlets are covered with sewage covers 12.

[0018] An installation sealing ring is arranged between the filter cage 5 and the installation groove. The sewage cover 12 is connected to the valve body 1 by fixing screws, and a sealing gasket is arranged on the sewage cover 12 facing the valve body 1. The sewage outlet is opened from the middle of the valve body 1 to the bottom of the valve body 1.

[0019] The top of the valve stem 2 is connected with a handle 9. A valve cover 8 is also arranged above the valve body 1, and the valve cover 8 is connected to the valve body 1 through a connecting screw 10 and a nut 11, the bottom end of the connecting screw 10 is rotatably connected to the top surface of the valve body 1, and the connecting screw 10 passes through the bottom surface of the valve cover 8 and is screwed to the nut 11.

[0020] The valve body 1 of the utility model is provided with a filter structure, through which the medium is filtered, and impurities can be collected in the filter cage 5, and the impurities can be discharged by opening the drain cover 12 and flushing with clean water, which is convenient for cleaning.

[0021] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A gate valve with filtering function, comprising a valve body, a valve stem and a gate plate, wherein a valve cavity is provided in the valve body, a valve seat is provided in the valve cavity, the valve stem extends from the upper end of the valve body into the valve cavity, and the bottom end of the valve stem is connected to the gate plate, characterized in that: Installation grooves are respectively arranged in the valve cavity on the left and right sides of the gate valve along the left and right side walls of the gate valve, and filter cages are arranged in the installation grooves, and filter screens are arranged on the left and right side walls of the filter cages; the center of the gate plate is concave to form a clearance groove, and the filter screen close to one side of the gate plate is provided with filter holes corresponding to the clearance grooves, and sealing rings are arranged on the filter screen and the gate plate edge correspondingly; the filter hole diameters of the filter screens close to the inlet end of the two filter cages are larger than the filter hole diameters of the filter screens close to the outlet end; sewage outlets are arranged on the front and rear sides of the valve body corresponding to the interval between the two filter screens of the filter cages, and the sewage outlets are covered with sewage discharge covers.

2. A gate valve with filtering function as claimed in claim 1, characterized in that: A mounting seal ring is arranged between the filter cage and the mounting groove.

3. A gate valve with filtering function as claimed in claim 1, characterized in that: The drain cover is connected to the valve body via fixing screws, and a sealing gasket is arranged on one side of the drain cover facing the valve body.

4. A gate valve with filtering function as claimed in claim 1, characterized in that: The sewage outlet is opened from the middle of the valve body to the bottom of the valve body.

5. A gate valve with filtering function as claimed in claim 1, characterized in that: The top end of the valve stem is connected with a handle.

6. A gate valve with filtering function as claimed in claim 5, characterized in that: A valve cover is also arranged above the valve body. The valve cover and the valve body are connected by a connecting screw and a nut. The bottom end of the connecting screw is rotatably connected to the top surface of the valve body. The connecting screw passes through the bottom surface of the valve cover and is screwed to the nut.

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