Novel high-temperature-resistant and corrosion-resistant gate valve

Abstract

The novel high-temperature-resistant and corrosion-resistant gate valve comprises a gate valve body, a valve plate and a screw rod, a threaded hole is formed in the upper wall of the gate valve body, the screw rod is installed in the threaded hole in a screwed mode, the valve plate is rotatably installed at the end, located in the gate valve body, of the screw rod, a water flow channel is formed in the gate valve body, and the valve plate can block the water flow channel. A receding groove is formed in the gate valve body and communicates with the water flow channel, the valve plate is inserted and installed in the receding groove, the outer side of the valve plate is sleeved with a sealing ring, the sealing ring is attached to the inner wall of the receding groove, a flow guide hole is formed in the inner wall of the receding groove, and a one-way valve is installed in the flow guide hole. According to the device, the flow guide hole and the one-way valve are arranged in the receding groove, so that liquid brought into the receding groove by the valve plate can be discharged back into the water flow channel, and the situation that the screw rod in the device is immersed into the liquid and corroded, and normal use of the device is affected is avoided.

Description

Technical Field

[0001] This patent relates to the field of gate valves, specifically a new type of high temperature and corrosion resistant gate valve. Background Art

[0002] The gate valve is a commonly used valve product for controlling the on-off of the pipeline system. The general gate valve has a valve plate, a valve stem and a handwheel. The valve plate is used to close and open the fluid channel.

[0003] Since the valve plate of the existing gate valve is frequently raised and lowered and contacts the liquid in the pipeline, the liquid that is in direct contact or penetrates upward due to capillary action may be easily brought into other parts that are not in direct contact with the liquid, such as the screw, during the lifting process of the valve plate. This may easily cause rapid corrosion of the screw, affecting the opening and closing of the gate valve and the service life. Therefore, further improvements are needed on this basis. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this patent is to provide a new type of high temperature and corrosion resistant gate valve.

[0005] The technical solution adopted by this patent to solve its technical problems is: a new type of high temperature and corrosion resistant gate valve, including a gate valve body, a valve plate and a screw, the upper wall of the gate valve body is provided with a threaded hole, the screw is screwed into the threaded hole, one end of the screw located inside the gate valve body is rotatably installed with a valve plate, the gate valve body is provided with a water flow channel, and the valve plate can block the water flow channel;

[0006] A clearance groove is provided inside the gate valve body, and the clearance groove is connected to the water flow channel. The valve plate is inserted and installed in the clearance groove. A sealing ring is sleeved on the outer side of the valve plate, and the sealing ring fits with the inner wall of the clearance groove. A guide hole is provided on the inner wall of the guide hole, and the guide hole is connected to the water flow channel. A one-way valve is installed in the guide hole.

[0007] Furthermore, a sealing ring is installed in the middle of the water flow channel, and a rubber ring is installed on the side wall of the sealing ring, and the rubber ring can be fitted with the side wall of the valve plate.

[0008] Furthermore, the one-way valve includes a fixed sleeve, a fixed ring, a rotating plate and a spring. The fixed sleeve is installed in the guide hole, the inner wall of the fixed sleeve is installed with a fixed ring, the lower wall of the fixed ring is rotatably installed with a rotating plate, the upper wall of the rotating plate is installed with one end of the spring, and the other end of the spring is installed on the inner wall of the fixed sleeve.

[0009] Furthermore, a connecting ring is installed at one end of the screw located in the inner cavity of the gate valve body, a connecting block is installed on the upper wall of the valve plate, an installation groove is opened on the upper wall of the connecting block, the connecting ring is inserted and installed in the installation groove, and the connecting ring can rotate in the installation groove.

[0010] Furthermore, a plug post is installed on the lower wall of the sealing ring, and the plug post can be inserted into the guide hole.

[0011] Furthermore, a rotating wheel is installed at one end of the screw located outside the gate valve body.

[0012] The beneficial effects of this patent are:

[0013] The device is provided with a guide hole and a one-way valve in its clearance groove, so that the liquid brought into the clearance groove by the valve plate can be discharged back into the water flow channel, thereby preventing the screw in the device from being immersed in the liquid and being corroded, thereby affecting the normal use of the device;

[0014] In addition, the device also provides a sealing ring on the outside of the valve plate, which is equivalent to a piston that can slide in the give-way groove. When the screw is rotated to move the valve plate downward, the piston can press the liquid in the give-way groove into the guide hole to make it flow back into the water flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of this patent.

[0016] Figure 2 This is a schematic diagram of the screw structure of this patent.

[0017] Figure 3 This is a schematic diagram of the one-way valve structure of this patent.

[0018] Explanation of the reference numerals: 1 gate valve body, 2 valve plate, 3 screw, 4 threaded hole, 5 water flow channel, 6 give way groove, 7 sealing ring, 8 guide hole, 9 one-way valve, 91 fixed sleeve, 92 fixed ring, 93 rotating plate, 94 spring, 10 sealing ring, 11 rubber ring, 12 connecting ring, 13 connecting block, 14 mounting groove, 15 plug column, 16 runner. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0020] See also Figure 1 , Figure 2 , Figure 3This is a schematic diagram of the structure of the patent. The new high-temperature and corrosion-resistant gate valve includes a gate valve body 1, a valve plate 2 and a screw 3. A threaded hole 4 is provided on the upper wall of the gate valve body 1. The screw 3 is screwed into the threaded hole 4. The valve plate 2 is rotatably installed at one end of the screw 3 located inside the gate valve body 1. A water flow channel 5 is provided inside the gate valve body 1. The valve plate 2 can block the water flow channel 5.

[0021] The high temperature and corrosion resistant gate valve proposed in this article is a wedge-type gate valve, which is achieved by rotating the screw 3 to lower the height of the valve plate 2, and then blocking the water flow channel through the valve plate 2. The gate valve body 1 and the valve plate 2 in this article are both made of cast steel, and have good high temperature and corrosion resistance. In addition, the sealing ring 7 and the rubber ring 11 in this article are both made of fluorinated rubber, and also have the characteristics of high temperature resistance and corrosion resistance;

[0022] A clearance groove 6 is provided inside the gate valve body 1, and the clearance groove 6 is connected to the water flow channel 5. The valve plate 2 is inserted and installed in the clearance groove 6. A sealing ring 7 is sleeved on the outer side of the valve plate 2, and the sealing ring 7 is fitted with the inner wall of the clearance groove 6. A guide hole 8 is provided on the inner wall of the clearance groove 6, and the guide hole 8 is connected to the water flow channel 5. A one-way valve 9 is installed in the guide hole 8.

[0023] By arranging a guide hole 8 and a one-way valve 9 in the clearance groove 6, the liquid brought into the clearance groove 6 by the valve plate 2 can be discharged back into the water flow channel 5, thereby preventing the screw 3 in the device from being immersed in the liquid and being corroded, thereby affecting the normal use of the device;

[0024] The sealing ring 7 can be regarded as a piston. When the screw 3 is rotated to move the valve plate 2 downward, the sealing ring 7 can press the liquid in the clearance groove 6 downward to press it into the guide hole 8 and make it flow back into the water flow channel 5.

[0025] A sealing ring 10 is installed in the middle of the water flow channel 5, and a rubber ring 11 is installed on the side wall of the sealing ring 10, and the rubber ring 11 can fit the side wall of the valve plate 2;

[0026] By providing the sealing ring 10 and the rubber ring 11 , the sealing performance between the valve plate 2 and the water flow channel 5 can be improved when the valve plate 2 of the device is closed.

[0027] The one-way valve 9 includes a fixed sleeve 91, a fixed ring 92, a rotating plate 93 and a spring 94. The fixed sleeve 91 is installed in the guide hole 8. The inner wall of the fixed sleeve 91 is installed with the fixed ring 92. The lower wall of the fixed ring 92 is rotatably installed with the rotating plate 93. The upper wall of the rotating plate 93 is installed with one end of the spring 94. The other end of the spring 94 is installed on the inner wall of the fixed sleeve 91.

[0028] Since the rotating plate 93 in the device can only rotate downward, the liquid in the make way groove 6 can flow into the water flow channel 5 through the guide hole 8, but the liquid in the water flow channel 5 cannot flow into the make way groove 6.

[0029] A connecting ring 12 is installed at one end of the screw 3 located in the inner cavity of the gate valve body 1, and a connecting block 13 is installed on the upper wall of the valve plate 2. The upper wall of the connecting block 13 is provided with a mounting groove 14, and the connecting ring 12 is inserted and installed in the mounting groove 14. The connecting ring 12 can rotate in the mounting groove 14.

[0030] The lower wall of the sealing ring 7 is provided with an inserting post 15 , which can be inserted into the guide hole 8 .

[0031] A runner 16 is installed at one end of the screw 3 located outside the gate valve body 1 .

[0032] When the patent is working, when the valve needs to be opened, the screw 3 is rotated clockwise to drive the valve plate 2 to move upward through the screw 3, thereby releasing the blockage of the water flow channel 5, so that the two sides of the water flow channel 5 are connected, and the valve is in an open state;

[0033] When closing the valve, the screw 3 is rotated counterclockwise, and the screw 3 drives the valve plate 2 to move downward, and the valve plate 2 blocks the water flow channel 5. In this process, the sealing ring 7 moves downward with the valve plate 2, and can press the liquid in the make way groove 6 downward, so that it is pressed into the guide hole 8 and flows back into the water flow channel 5.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel high temperature and corrosion resistant gate valve, comprising a gate valve body (1), a valve plate (2) and a screw (3), characterized in that: A threaded hole (4) is provided on the upper wall of the gate valve body (1), and the screw (3) is screwed into the threaded hole (4). A valve plate (2) is rotatably mounted on one end of the screw (3) located inside the gate valve body (1). A water flow channel (5) is provided inside the gate valve body (1), and the valve plate (2) can block the water flow channel (5). The gate valve body (1) is provided with a clearance groove (6) inside, the clearance groove (6) is connected to the water flow channel (5), the valve plate (2) is inserted and installed in the clearance groove (6), the outer side of the valve plate (2) is sleeved with a sealing ring (7), the sealing ring (7) is in contact with the inner wall of the clearance groove (6), the inner wall of the clearance groove (6) is provided with a guide hole (8), the guide hole (8) is connected to the water flow channel (5), and a one-way valve (9) is installed in the guide hole (8).

2. The new high temperature and corrosion resistant gate valve according to claim 1 is characterized in that: A sealing ring (10) is installed in the middle of the water flow channel (5), and a rubber ring (11) is installed in contact with the side wall of the sealing ring (10), and the rubber ring (11) can be in contact with the side wall of the valve plate (2).

3. The new type of high temperature and corrosion resistant gate valve according to claim 1 is characterized in that: The one-way valve (9) comprises a fixed sleeve (91), a fixed ring (92), a rotating plate (93) and a spring (94); the fixed sleeve (91) is installed in the guide hole (8); the inner wall of the fixed sleeve (91) is installed with the fixed ring (92); the lower wall of the fixed ring (92) is rotatably installed with the rotating plate (93); the upper wall of the rotating plate (93) is installed with one end of the spring (94); and the other end of the spring (94) is installed on the inner wall of the fixed sleeve (91).

4. The new type of high temperature and corrosion resistant gate valve according to claim 1 is characterized in that: A connecting ring (12) is installed at one end of the screw rod (3) located in the inner cavity of the gate valve body (1), and a connecting block (13) is installed on the upper wall of the valve plate (2). The upper wall of the connecting block (13) is provided with a mounting groove (14), and the connecting ring (12) is inserted and installed in the mounting groove (14). The connecting ring (12) can rotate in the mounting groove (14).

5. The new type of high temperature and corrosion resistant gate valve according to claim 1 is characterized in that: The lower wall of the sealing ring (7) is provided with an insertion column (15), and the insertion column (15) can be inserted into the guide hole (8).

6. The new type of high temperature and corrosion resistant gate valve according to claim 1 is characterized in that: A rotating wheel (16) is installed at one end of the screw rod (3) located outside the gate valve body (1).

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