Corrosion-resistant gate valve

Abstract

This utility model proposes a corrosion-resistant gate valve with simple structure, long service life, and corrosion resistance. It includes a valve body and a fluid channel opened laterally in the valve body. The fluid channel is provided with a cleaning device, which includes a sliding frame that matches the shape of the fluid channel. The sliding frame is provided with a brush on its periphery. The brush resists the inner wall of the fluid channel. The fluid channel is provided with a sliding device for driving the sliding frame to slide and thus cleaning the inner wall. The fluid channel is also provided with a return device for returning the sliding frame to its original position.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a corrosion-resistant gate valve. Background Technology

[0002] A gate valve controls the flow or stop of fluid in a pipeline by opening and closing a gate. The direction of movement of the gate is perpendicular to the direction of fluid flow.

[0003] Although the existing valves can meet the usage requirements, when the valves transport fluid, impurities in the water flow will adhere to the inner wall of the valve body, thereby corroding the inside of the gate valve and reducing the service life of the valve.

[0004] This utility model was developed to solve this problem. Utility Model Content

[0005] Therefore, in view of the above problems, this utility model proposes a corrosion-resistant gate valve with simple structure, long service life and corrosion resistance.

[0006] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: a corrosion-resistant gate valve, including a valve body and a fluid channel laterally opened in the valve body. A cleaning device is provided in the fluid channel. The cleaning device includes a sliding frame that matches the shape of the fluid channel. A brush is provided on the periphery of the sliding frame. The brush resists the inner wall of the fluid channel. A sliding device is provided in the fluid channel for driving the sliding frame to slide and thus cleaning the inner wall. A return device is also provided in the fluid channel to return the sliding frame to its original position.

[0007] A further improvement is made to the sliding device, which includes a pull rope with a first hanging ring at one end and a second hanging ring on the sliding frame. The first hanging ring is fastened to the second hanging ring. A guide wheel is provided at the valve plate near the valve in the fluid channel. The pull rope passes through the guide wheel and exits the valve body. A sealing sleeve to prevent water leakage is provided between the valve body and the pull rope.

[0008] A further improvement is made to the following: the return device includes a spring, the other end of the sliding frame is provided with a third hanging ring, one end of the spring is provided with a fourth hanging ring, the third hanging ring is fastened to the fourth hanging ring, the fluid channel port is provided with a water-passing seat that allows water to flow through, the water-passing seat is provided with a fifth hanging ring, the other end of the spring is provided with a sixth hanging ring, and the sixth hanging ring is fastened to the fifth hanging ring.

[0009] A further improvement is that a maintenance channel is provided at the position of the water seat and the brush on the valve body, and a sealing cover is bolted to the opening of the maintenance channel, and a sealing device is provided between the sealing cover and the valve body.

[0010] A further improvement is that the sealing device includes a sealing ring, the valve body has a sealing groove, one end of the sealing ring is slidably disposed in the sealing groove, the other end resists the sealing cover, and a plurality of abutting springs are arranged around the sealing ring and the bottom of the sealing groove.

[0011] A further improvement is that the inner wall of the fluid channel is provided with a self-cleaning ceramic layer.

[0012] A further improvement is that the end of the rope is provided with a pull ring.

[0013] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0014] It features a simple structure, long service life, and corrosion resistance. During use, when impurities adhere to the inner wall, the operator pulls the rope, causing the brush to agitate the inner wall of the fluid channel, cleaning it and preventing impurities from accumulating inside the valve body. This prevents corrosion of the fluid channel's inner wall and thus extends the valve's service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the corrosion-resistant gate valve structure according to an embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the sliding frame structure according to an embodiment of the present invention.

[0017] Figure 3 This is an enlarged structural schematic diagram of embodiment A of this utility model. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] refer to Figure 1-3The present invention discloses a corrosion-resistant gate valve, comprising a valve body 1 and a fluid channel 2 laterally opened within the valve body 1. A cleaning device is provided within the fluid channel 2. The cleaning device includes a sliding frame 8 configured to match the shape of the fluid channel 2. A brush is provided around the periphery of the sliding frame 8, and the brush resists the inner wall of the fluid channel 2. A pull rope 10 is provided within the fluid channel 2 to drive the sliding frame 8 to slide and thus clean the inner wall. One end of the pull rope 10 is provided with a first hanging ring 7, and a second hanging ring is provided on the sliding frame 8. The first hanging ring 7 is fastened to the second hanging ring. The fluid channel 2 extends near the valve plate of the valve. A guide wheel 11 is provided, and the pull rope 10 passes through the guide wheel 11 and then out of the valve body 1. A sealing sleeve to prevent water leakage is provided between the valve body 1 and the pull rope 10. A spring 5 is provided in the fluid channel 2 to return the sliding frame 8 to its original position. A third hanging ring is provided at the other end of the sliding frame 8. A fourth hanging ring 6 is provided at one end of the spring 5. The third hanging ring is fastened to the fourth hanging ring 6. A water-passing seat 3 is provided at the port of the fluid channel 2 to allow water to flow through. A fifth hanging ring is provided on the water-passing seat 3. A sixth hanging ring 4 is provided at the other end of the spring 5. The sixth hanging ring 4 is fastened to the fifth hanging ring. In operation, when impurities adhere to the inner wall, the operator pulls the pull rope 10, which causes the sliding frame 8 to slide, thereby causing the brush to brush the inner wall of the fluid channel 2. The spring 5 is stretched. Then, the pull rope 10 is released, the spring 5 returns to its original position, and the sliding frame 8 returns to its original position. This process is repeated to clean the inner wall of the fluid channel 2, preventing impurities from adhering to the inner wall and thus preventing the accumulation of impurities inside the valve body 1. This prevents corrosion of the inner wall of the fluid channel 2 and helps to improve the service life of the valve.

[0020] To facilitate the replacement of the brush and spring 5 and ensure the sealing of the valve body 1, a maintenance channel is provided at the water seat 3 and the brush position on the valve body 1. A sealing cover 12 is bolted to the opening of the maintenance channel. A sealing ring 16 is provided between the sealing cover 12 and the valve body 1. The valve body 1 has a sealing groove 15. One end of the sealing ring 16 slides in the sealing groove 15, and the other end resists the sealing cover 12. A plurality of abutting springs 14 are arranged around the bottom of the sealing ring 16 and the sealing groove 15. When it is necessary to repair the spring 5 or replace the brush, the sealing cover 12 is opened, and then the second hanging ring, the third hanging ring, the fourth hanging ring 6, and the sixth hanging ring 4 are contacted to remove the brush and spring 5, allowing them to be replaced separately. This facilitates maintenance and replacement for staff and greatly improves efficiency. Under the push of the abutment spring 14, the sealing ring 16 always abuts against the sealing cover 12, thereby better ensuring the seal between the sealing cover 12 and the valve body. Especially when the valve body 1 is vibrated, the abutment spring 14 releases its elastic force to compensate, thus achieving better sealing.

[0021] In order to further facilitate the cleaning of impurities and prevent impurities from adhering to the inner wall of the fluid channel 2, the inner wall of the fluid channel 2 is provided with a self-cleaning ceramic layer 9.

[0022] To facilitate pulling the rope, a pull ring 13 is provided at the end of the rope.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant gate valve comprising a valve body, a fluid passageway transversely formed in the valve body, a cleaning device provided in the fluid passageway, characterized in that: The cleaning device includes a sliding frame that matches the shape of the fluid channel. A brush is provided on the periphery of the sliding frame. The brush resists the inner wall of the fluid channel. A sliding device is provided in the fluid channel to drive the sliding frame to slide and thus clean the inner wall. A return device is also provided in the fluid channel to return the sliding frame to its original position. ​ 2. The corrosion resistant gate valve of claim 1, wherein: The sliding device includes a pull rope, one end of which is provided with a first hanging ring, and the sliding frame is provided with a second hanging ring. The first hanging ring is fastened to the second hanging ring. The fluid channel is provided with a guide wheel near the valve plate of the valve. The pull rope passes through the guide wheel and then out of the valve body. A sealing sleeve is provided between the valve body and the pull rope to prevent water leakage.

3. The corrosion resistant gate valve of claim 1, wherein: The return device includes a spring, the other end of the sliding frame is provided with a third hanging ring, one end of the spring is provided with a fourth hanging ring, the third hanging ring is fastened to the fourth hanging ring, the fluid channel port is provided with a water-passing seat that allows water to flow through, the water-passing seat is provided with a fifth hanging ring, the other end of the spring is provided with a sixth hanging ring, the sixth hanging ring is fastened to the fifth hanging ring.

4. The corrosion resistant gate valve of claim 1, wherein: The valve body has a maintenance channel at the water seat and brush position. A sealing cover is bolted to the opening of the maintenance channel, and a sealing device is provided between the sealing cover and the valve body.

5. The corrosion resistant gate valve of claim 4, wherein: The sealing device includes a sealing ring, the valve body has a sealing groove, one end of the sealing ring is slidably disposed in the sealing groove, and the other end resists the sealing cover, and a plurality of abutting springs are arranged around the sealing ring and the bottom of the sealing groove.

6. The corrosion resistant gate valve of claim 1, wherein: The inner wall of the fluid channel is provided with a self-cleaning ceramic layer.

7. The corrosion resistant gate valve of claim 2, wherein: The end of the pull rope is provided with a pull ring.

Images