Gate valve with filtering function

Abstract

The gate valve with the filtering function is simple in structure and comprises a valve body, a valve cover arranged on the valve body, a water inlet channel, a water outlet channel, a valve plate and a filter screen, the water inlet channel and the water outlet channel are formed in the radial direction of the valve body, the valve plate and the filter screen are arranged between the water inlet channel and the water outlet channel, and a valve rod is arranged on the valve body. One end of the valve rod is connected with the valve plate, the other end of the valve rod penetrates out of the valve cover, a sliding channel is formed in the lower end of the valve body, the filter screen is connected with the valve plate through a connecting block, the filter screen enters the position between the water inlet channel and the water outlet channel when the valve plate is opened, and a fixing chamber is arranged at the lower end of the valve body. A sewage discharge channel is formed in the lower end of the fixed chamber, a sewage discharge device is arranged in the sewage discharge channel, and a cleaning device used for cleaning the filter screen is arranged in the fixed chamber.

Description

Technical Field

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

[0002] With the development of society, pipeline connections are needed in both production and life. In pipeline connections, pipeline connectors are required, among which gate valves are one of the most commonly used pipeline connectors.

[0003] In the prior art, although the gate valve can meet the use requirements, during use, there will be impurities in the water flow, which cannot be filtered and removed in the valve body, which can easily cause the impurities to deposit in the conveying pipeline, affecting the smooth flow of the pipeline.

[0004] In order to solve this problem, the present utility model is produced. Utility Model Content

[0005] Therefore, in order to solve the above problems, the present invention proposes a gate valve with a simple structure and a filtering function.

[0006] In order to solve the above technical problems, the solution adopted by the utility model is: a gate valve with a filtering function, comprising a valve body, a valve cover arranged on the valve body, a water inlet channel and a water outlet channel opened radially along the valve body, a valve plate arranged between the water inlet channel and the water outlet channel, and a filter screen, a valve stem is provided on the valve body, one end of the valve stem is connected to the valve plate, and the other end of the valve stem passes through the valve cover, a sliding channel is provided at the lower end of the valve body, the filter screen is connected to the valve plate through a connecting block, and the filter screen enters between the water inlet channel and the water outlet channel when the valve plate is opened, a fixed chamber is provided at the lower end of the valve body, a sewage discharge channel is provided at the lower end of the fixed chamber, a sewage discharge device is provided in the sewage discharge channel, and a cleaning device for cleaning the filter screen is provided in the fixed chamber.

[0007] A further improvement is that the cleaning device comprises two jet guns, each of which is provided with a universal ball, which is rotatably arranged at both ends of the fixed chamber.

[0008] A further improvement is that the sewage discharge device includes a sealing plug, and the sealing plug is threadedly connected and plugged in the sewage discharge channel.

[0009] A further improvement is that a rotating rod is rotatably provided on the valve body, one end of the rotating rod is located in the water inlet channel and a fixing plate is provided at the end, the other end of the rotating rod passes through the outside of the valve body, and a linkage device is provided between the rotating rod and the valve stem.

[0010] A further improvement is that: the linkage device includes a linkage rod, which is laterally rotated and penetrates the valve body, one end of the linkage rod is located inside the valve body and the end is provided with a first bevel tooth, the valve stem is provided with a second bevel tooth, the first bevel tooth and the second bevel tooth are engaged for transmission, the rotating rod is provided with a third bevel tooth, and the other end of the linkage rod is provided with a fourth bevel tooth, the third bevel tooth and the fourth bevel tooth are engaged for transmission.

[0011] A further improvement is that: a sealing box is provided on the valve body, and the rotating rod and the connecting rod are located in the sealing box.

[0012] A further improvement is that a hand wheel is provided on the valve stem.

[0013] A further improvement is that: the fixing plate is a rubber plate.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The structure is simple and has filtering function. When in use, when the valve is opened, the valve plate rises, thereby driving the filter to rise. The filter filters impurities and prevents impurities from entering the water outlet channel and causing siltation in the pipe, thereby facilitating the cleaning of the pipe and avoiding pipe blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a gate valve with a filtering function according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0017] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0018] refer to Figure 1, the utility model embodiment discloses: a gate valve with a filtering function, comprising a valve body 1, a valve cover 5 arranged on the valve body 1, an inlet channel 2 and a water outlet channel opened radially along the valve body 1, a valve plate 3 arranged between the water inlet channel 2 and the water outlet channel, and a filter screen 7, the valve body 1 is provided with a valve stem 4, one end of the valve stem 4 is connected to the valve plate 3, the other end of the valve stem 4 passes through the valve cover 5, the lower end of the valve body 1 is provided with a sliding channel, the filter screen 7 is connected to the valve plate 3 through a connecting block, and the filter screen 7 enters between the water inlet channel 2 and the water outlet channel when the valve plate 3 is opened, the lower end of the valve body 1 is provided with a fixed chamber 6, the lower end of the fixed chamber 6 is provided with a sewage channel, a sealing plug 10 is provided in the sewage channel, the sealing plug 10 is threadedly connected and blocked in the sewage channel, the fixed chamber 6 is provided with two jet guns 9 for cleaning the filter screen 7, the jet gun 9 is provided with a universal ball 8, and the universal ball 8 is rotatably arranged at both ends of the fixed chamber 6. During use, when the valve is opened, the valve plate 3 rises, thereby driving the filter screen 7 to rise, so that the filter screen 7 enters the valve body 1 from the sliding channel, and the water flows into the water inlet channel 2, passes through the filter screen 7, and then flows out of the water outlet channel. The filter screen 7 filters impurities to prevent impurities from entering the water outlet channel and causing siltation in the pipeline, thereby facilitating pipeline cleaning and preventing pipeline blockage. When use is over, the valve plate 3 returns to its original position, driving the filter screen 7 to enter the fixed chamber 6, and then the jet gun 9 is started and rotated. The jet gun 9 sprays fluid on the filter screen 7, thereby removing impurities on the filter screen 7, thereby preparing for the next filtration, and then the sealing plug 10 is opened to discharge the impurities.

[0019] In order to prevent water hammer from hitting the valve plate 3 and affecting the service life of the valve plate 3, a rotating rod 13 is rotatably penetrated on the valve body 1. One end of the rotating rod 13 is located in the water inlet channel 2 and a fixed plate 11 is provided at the end thereof. The other end of the rotating rod 13 passes through the outside of the valve body 1. A linkage device is provided between the rotating rod 13 and the valve stem 4.

[0020] Specifically, the linkage device includes a linkage rod 16,

[0021] The connecting rod 16 is laterally rotated and penetrates the valve body 1. One end of the connecting rod 16 is located inside the valve body 1 and is provided with a first bevel gear. The valve stem 4 is provided with a second bevel gear 17, and the first bevel gear and the second bevel gear 17 are meshed and driven. The rotating rod 13 is provided with a third bevel gear 14. The other end of the connecting rod 16 is provided with a fourth bevel gear 15, and the third bevel gear 14 is meshed and driven with the fourth bevel gear 15. In use, when the valve stem 4 is rotated to close the valve, the valve stem 4 drives the second bevel gear 17 to rotate, and the second bevel gear 17 drives the first bevel gear to rotate, thereby driving the connecting rod 16 to rotate. The connecting rod 16 drives the rotating rod 13 to rotate through the third bevel gear 14 and the fourth bevel gear 15. The rotating rod 13 drives the fixed plate 11 to rotate, causing the fixed plate 11 to rotate 90 degrees so that it is perpendicular to the water inlet channel 2. When water hammer enters the water inlet channel 2, it hits the fixed plate 11, thereby protecting the valve plate 3 and improving the service life of the valve plate 3. When the valve is opened, the valve stem 4 is reversed, and the valve stem 4 drives the rotating rod 13 to reverse, and the rotating rod 13 drives the fixed plate 11 to reverse 90°, so that the fixed plate 11 is parallel to the water flow in the water inlet channel 2, so that the fixed plate 11 does not affect the water flow through the water inlet channel 2.

[0022] Preferably, the fixing plate 11 is a rubber plate.

[0023] In order to increase the service life of the connecting rod and the rotating rod 13 , a sealing box 12 is provided on the valve body 1 , and the rotating rod 13 and the connecting rod 16 are located in the sealing box 12 .

[0024] In order to facilitate the rotation of the valve stem 4, a hand wheel is provided on the valve stem 4.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection claimed in the present invention is defined by the attached claims and their equivalents.

Claims

1. A gate valve with a filtering function, comprising a valve body, a valve cover disposed on the valve body, a water inlet channel and a water outlet channel radially extending from the valve body, and a valve plate disposed between the water inlet channel and the water outlet channel, wherein the valve body is provided with a valve stem, one end of the valve stem being connected to the valve plate and the other end of the valve stem extending through the valve cover, characterized in that: It also includes a filter screen, a sliding channel is provided at the lower end of the valve body, the filter screen is connected to the valve plate through a connecting block, and the filter screen enters between the water inlet channel and the water outlet channel when the valve plate is opened. A fixed chamber is provided at the lower end of the valve body, a sewage channel is provided at the lower end of the fixed chamber, a sewage discharge device is provided in the sewage channel, and a cleaning device for cleaning the filter screen is provided in the fixed chamber.

2. The gate valve with filtering function according to claim 1, characterized in that: The cleaning device comprises two jet guns. The jet guns are provided with universal balls, and the universal balls are rotatably arranged at two ends of a fixed chamber.

3. The gate valve with filtering function according to claim 1, characterized in that: The sewage discharge device comprises a sealing plug, and the sealing plug is threadedly connected and plugged in the sewage discharge channel.

4. The gate valve with filtering function according to claim 1, characterized in that: A rotating rod is rotatably provided on the valve body, one end of the rotating rod is located in the water inlet channel and a fixing plate is provided at the end thereof, and the other end of the rotating rod passes through the outside of the valve body, and a linkage device is provided between the rotating rod and the valve stem.

5. The gate valve with filtering function according to claim 4, characterized in that: The linkage device includes a linkage rod, which is laterally rotated and penetrates the valve body. One end of the linkage rod is located inside the valve body and is provided with a first bevel gear at the end. The valve stem is provided with a second bevel gear, and the first bevel gear and the second bevel gear are engaged for transmission. The rotating rod is provided with a third bevel gear, and the other end of the linkage rod is provided with a fourth bevel gear, and the third bevel gear and the fourth bevel gear are engaged for transmission.

6. The gate valve with filtering function according to claim 5, characterized in that: A sealing box is provided on the valve body, and the rotating rod and the connecting rod are located in the sealing box.

7. The gate valve with filtering function according to claim 1, characterized in that: A hand wheel is provided on the valve stem.

8. The gate valve with filtering function according to claim 4, characterized in that: The fixing plate is a rubber plate.

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