Gate valve with high sealing performance

Abstract

The utility model discloses a gate valve with high sealing performance, which is characterized by comprising a gate valve main body unit comprising a water passing pipe main body, and the upper surface of the water passing pipe main body is fixedly connected with a branch pipe; the flashboard unit comprises a lead screw, a flashboard body is arranged at the lower end of the lead screw, a clamping spring is arranged in the flashboard body, and a rubber sealing gasket is fixedly connected to the outer surface of the clamping spring; the flange unit comprises a flange main body, the inner wall of the flange main body is fixedly connected to the outer surface of the water passing pipe main body, and the outer surface of the flange main body is in threaded connection with a sealing ring. The sealing ring and the rubber gasket are matched for use, so that the joint between the flange bodies can be sealed, leakage is reduced, the sealing effect of the gate plate body can be improved under the matching of the clamping spring and the rubber sealing gasket, the replacement frequency of the sealing layer and the disassembly frequency of the gate valve can be reduced, and the service life of the gate valve is prolonged. And the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a high-sealing gate valve. Background Art

[0002] A gate valve is a common valve used to control fluid flow. Its core component is a gate. Gate valves are mainly used to open and close fluid flow and are not suitable for regulating flow. They are usually used in places with high requirements for valve sealing, such as petrochemicals, mining equipment, and power equipment. Due to its simple structure, easy manufacturing, and good sealing performance, it is widely used in many fields such as petroleum, chemical industry, and water treatment.

[0003] However, the existing gate valves will wear out the sealing gaskets during use, and they need to be replaced immediately after wear occurs, otherwise leakage will occur, resulting in a significant decrease in sealing performance. However, frequent replacements greatly increase the cost of the equipment, and are also prone to damage to the equipment connections, resulting in leakage at the connection between the gate valve and the pipeline. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing high-sealing gate valve, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a high-sealing gate valve, which is designed to solve the problem that "the existing gate valve will wear the sealing gasket during use, and it needs to be replaced immediately after wear occurs, otherwise leakage will occur, resulting in a significant decrease in sealing performance."

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a high sealing gate valve, characterized in that: it includes:

[0008] The gate valve main body unit comprises a water pipe main body, the upper surface of which is fixedly connected with a branch pipe, and the upper end of which is provided with a connecting pipe;

[0009] The gate unit comprises a screw rod, the outer surface of which is threadedly connected to the inside of the connecting pipe, a gate body is arranged at the lower end of the screw rod, a retaining spring is arranged inside the gate body, and a rubber sealing pad is fixedly connected to the outer surface of the retaining spring;

[0010] The flange unit comprises a flange body, the inner wall of which is fixedly connected to the outer surface of a water pipe body, and the outer surface of which is threadedly connected with a sealing ring.

[0011] As a preferred solution of the high-sealing gate valve described in the utility model, the outer surface of the gate body is provided with a mounting groove, the outer surface of the retaining ring is slidably connected to the inside of the mounting groove, the side surface of the rubber sealing gasket is slidably connected to the inner wall of the mounting groove, and the outer surface of the rubber sealing gasket is slidably connected to the inner wall of the branch pipe.

[0012] As a preferred solution of the high-sealing gate valve described in the utility model, the lower end of the screw rod is rotatably connected to a clamping piece, the outer surface of the gate plate body is fixedly connected to the inside of the clamping piece, the outer surface of the screw rod is threadedly connected to the inside of the connecting pipe, and the upper end of the screw rod is fixedly connected to a handle.

[0013] As a preferred solution of the high-sealing gate valve described in the utility model, the outer surface of the flange body is provided with a first thread groove, one side of the inner wall of the sealing ring is provided with a second thread groove, and the other side of the inner wall of the sealing ring is fixedly connected with a rubber pad, and the inner wall of the rubber pad is in fit with the flange body.

[0014] As a preferred solution of the high-sealing gate valve described in the utility model, an isolation plate is provided on the inner wall of the connecting pipe, and the outer surface of the screw rod is threadedly connected to the inside of the isolation plate.

[0015] As a preferred solution of the high-sealing gate valve described in the utility model, the gate body is larger than the water pipe body, a track is provided in the middle of the inner wall of the water pipe body, and the outer surface of the gate body is slidably connected to the track and the inner wall of the branch pipe.

[0016] Beneficial effects of the utility model:

[0017] The joints between the flange bodies can be sealed by using sealing rings and rubber gaskets to reduce leakage, and the sealing effect of the gate body can be improved with the cooperation of the retaining ring and rubber sealing gasket, thereby reducing the replacement frequency of the sealing layer and the disassembly frequency of the gate valve and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a schematic diagram of the overall front structure of a high-sealing gate valve proposed by the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the gate unit;

[0021] Figure 3 for Figure 1 Schematic diagram of the flange unit.

[0022] In the figure: 100, gate valve main unit; 101, water pipe main body; 102, branch pipe; 103, connecting pipe; 200, gate unit; 201, screw rod; 202, clamping member; 203, gate main body; 204, mounting groove; 205, retaining spring; 206, rubber sealing pad; 207, handle; 300, flange unit; 301, flange main body; 302, first thread groove; 303, sealing ring; 304, second thread groove; 305, rubber pad. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Reference Figure 1-3 The utility model provides a high sealing gate valve, comprising:

[0028] The gate valve main unit 100 includes a water pipe main body 101, a branch pipe 102 is fixedly connected to the upper surface of the water pipe main body 101, and a connecting pipe 103 is provided at the upper end of the branch pipe 102;

[0029] The gate unit 200 includes a screw rod 201, the outer surface of the screw rod 201 is threadedly connected to the inside of the connecting pipe 103, the lower end of the screw rod 201 is provided with a gate body 203, the inside of the gate body 203 is provided with a retaining spring 205, and the outer surface of the retaining spring 205 is fixedly connected with a rubber sealing pad 206;

[0030] The flange unit 300 includes a flange body 301, the inner wall of which is fixedly connected to the outer surface of the water pipe body 101, and a sealing ring 303 is threadedly connected to the outer surface of the flange body 301. By rotating the screw rod 201, the position of the gate body 203 can be accurately controlled, thereby achieving the purpose of opening or closing the water pipe. At the same time, under the setting of the retaining spring 205, the rubber sealing pad 206 can be pushed to be close to the water pipe body 101, providing a good sealing effect, preventing fluid leakage, and ensuring the efficient operation of the system and environmental safety.

[0031] The outer surface of the gate body 203 is provided with a mounting groove 204, the outer surface of the retaining spring 205 is slidably connected to the inside of the mounting groove 204, the side surface of the rubber sealing pad 206 is slidably connected to the inner wall of the mounting groove 204, and the outer surface of the rubber sealing pad 206 is slidably connected to the inner wall of the branch pipe 102. The gate body 203 is larger than the water pipe body 101, and a track is provided in the middle of the inner wall of the water pipe body 101, and the outer surface of the gate body 203 is slidably connected to the track and the inner wall of the branch pipe 102. When in use, the retaining spring 205 will push the rubber sealing pad 206 to move so that it fits more closely to the inner wall of the water pipe body 101, thereby improving the airtightness of the device.

[0032] Furthermore, the lower end of the screw rod 201 is rotatably connected to the clamping piece 202, the outer surface of the gate body 203 is fixedly connected to the inside of the clamping piece 202, the outer surface of the screw rod 201 is threadedly connected to the inside of the connecting pipe 103, and the upper end of the screw rod 201 is fixedly connected to the handle 207. The inner wall of the connecting pipe 103 is provided with an isolation plate, and the outer surface of the screw rod 201 is threadedly connected to the inside of the isolation plate. By rotating the handle 207, the gate body 203 can be moved by driving the screw rod 201.

[0033] Furthermore, a first thread groove 302 is provided on the outer surface of the flange body 301, a second thread groove 304 is provided on one side of the inner wall of the sealing ring 303, and a rubber pad 305 is fixedly connected to the other side of the inner wall of the sealing ring 303. The inner wall of the rubber pad 305 fits the flange body 301, and the first thread groove 302 and the second thread groove 304 can facilitate the installation of the sealing ring 303 during use. After the sealing ring 303 is installed, the connection between the two flange bodies 301 can be sealed by the cooperation of the rubber pad 305, which further improves the sealing effect.

[0034] During use, the sealing ring 303 is first installed on the outer surface of the flange body 301 through the first thread groove 302 and the second thread groove 304, and then the connection between the two flange bodies 301 can be sealed through the cooperation of the rubber gasket 305 to reduce leakage at the connection. When draining water, the handle 207 is turned to drive the gate body 203 to move through the screw rod 201 to control the opening and closing. The gate body 203 will cause wear of the sealing gasket when moving, and then the rubber sealing gasket 206 is pushed back under the setting of the retaining spring 205 to make it more closely fit the inner wall of the water pipe body 101, thereby increasing the service life of the rubber sealing gasket 206, reducing the frequency of replacement, and improving the use effect.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high sealing gate valve, characterized by: include: The gate valve main body unit (100) comprises a water pipe main body (101), a branch pipe (102) is fixedly connected to the middle of the outer surface of the water pipe main body (101), and a connecting pipe (103) is arranged at the upper end of the branch pipe (102); The gate unit (200) comprises a screw rod (201), the outer surface of the screw rod (201) being threadedly connected to the inside of the connecting pipe (103), a gate body (203) being arranged at the lower end of the screw rod (201), a retaining spring (205) being arranged inside the gate body (203), and a rubber sealing pad (206) being fixedly connected to the outer surface of the retaining spring (205); The flange unit (300) comprises a flange body (301), the inner wall of the flange body (301) is fixedly connected to the outer surface of the water pipe body (101), and the outer surface of the flange body (301) is threadedly connected to a sealing ring (303).

2. A high sealing gate valve according to claim 1, characterized in that: The outer surface of the gate body (203) is provided with a mounting groove (204), the outer surface of the retaining ring (205) is slidably connected to the inside of the mounting groove (204), the side surface of the rubber sealing gasket (206) is slidably connected to the inner wall of the mounting groove (204), and the outer surface of the rubber sealing gasket (206) is slidably connected to the inner wall of the branch pipe (102).

3. A high sealing gate valve according to claim 1, characterized in that: The lower end of the screw rod (201) is rotatably connected to a clamping piece (202), the outer surface of the gate body (203) is fixedly connected to the inside of the clamping piece (202), and the upper end of the screw rod (201) is fixedly connected to a handle (207).

4. A high sealing gate valve according to claim 1, characterized in that: The outer surface of the flange body (301) is provided with a first thread groove (302), one side of the inner wall of the sealing ring (303) is provided with a second thread groove (304), and the other side of the inner wall of the sealing ring (303) is fixedly connected with a rubber pad (305), and the inner wall of the rubber pad (305) is in contact with the outer surface of the flange body (301).

5. A high sealing gate valve according to claim 1, characterized in that: The inner wall of the connecting pipe (103) is provided with an isolation plate, and the outer surface of the screw rod (201) is threadedly connected to the inside of the isolation plate.

6. A high sealing gate valve according to claim 1, characterized in that: The gate body (203) is larger than the water pipe body (101), a track is provided in the middle of the inner wall of the water pipe body (101), and the outer surface of the gate body (203) is slidably connected to the track and the inner wall of the branch pipe (102).

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