High-pressure corrosion-resistant flat gate valve

Abstract

The utility model relates to the technical field of flat gate valves, and provides a high-pressure corrosion-resistant flat gate valve which comprises a communicating pipe, a gate cavity is formed in the middle of the communicating pipe, the connecting position of the communicating pipe and the gate cavity is sealed, the communicating pipe and the gate cavity are communicated, a gate valve plate capable of ascending and descending to complete opening / closing is arranged in the gate cavity, and the bottom of the gate cavity is communicated with a bottom box. A driving assembly capable of being driven to rotate is arranged at the bottom of the bottom box, driven assemblies capable of rotating along with the driving assembly to rotate synchronously are arranged in a cavity of the bottom box in a bilateral symmetry mode, and each driven assembly comprises a scraping rubber plate playing a role in scraping the gate valve plate. By means of the design, the problem that in the prior art, the corrosion resistance of a flat gate valve is increased through an anti-corrosion coating, the coating is prone to being affected by external factors such as impact and meteorological changes, the coating can be damaged, and the protected metal surface is corroded is solved.

Description

Technical Field

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

[0002] The flat gate valve is a sliding valve with parallel gates as the closing part. The closing part can be a single gate or a double gate with a propping mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or floating valve seat. If it is a double-disc flat gate valve, the propping mechanism between the two gates can supplement this pressing force. Flat gate valves can be divided into manual flat gate valves, pneumatic flat gate valves and electric flat gate valves according to the driving mode. According to the purpose and application occasion, they can be divided into flat gate valves with diversion holes, flat gate valves without diversion holes, oilfield flat gate valves, pipeline flat gate valves and gas flat gate valves.

[0003] After searching, the announcement number CN213117659U discloses a flat gate valve, including a flat gate valve body, the flat gate valve body includes a first functional layer, a second functional layer and a base layer, the first functional layer includes a nano waterproof coating and an epoxy resin coating, and the second functional layer includes a hot-dip galvanized layer and a nickel-based alloy layer. The utility model is provided with a second functional layer including a hot-dip galvanized layer and a nickel-based alloy layer, wherein the nickel-based alloy layer has excellent properties such as corrosion resistance and oxidation resistance, and the hot-dip galvanized layer plays the role of beauty and rust prevention, so that the entire surface is protected, and the impact resistance and wear resistance are quite good. The hot-dip galvanized layer and the nickel-based alloy layer improve the overall corrosion resistance, and the first functional layer including a nano waterproof coating and an epoxy resin coating is provided, and the nano waterproof coating and the epoxy resin coating improve the overall protection performance, which solves the problem that the service life of the existing flat gate valve is not long and it is not convenient for people to use.

[0004] The above-mentioned flat gate valve adopts hot-dip galvanizing layer and nickel-based alloy layer to improve the overall corrosion resistance. However, increasing the corrosion resistance of the flat gate valve by anti-corrosion coating is easily affected by external factors, such as impact and weather changes, which will damage the coating and cause corrosion to the protected metal surface. Utility Model Content

[0005] The utility model provides a high-pressure corrosion-resistant flat gate valve, which solves the problem that the corrosion resistance of the flat gate valve is easily affected by external factors such as impact and weather changes, which may damage the coating and cause corrosion to the protected metal surface.

[0006] The technical solution of the utility model is as follows: a high-pressure corrosion-resistant flat gate valve, including a connecting pipe, a gate cavity is arranged in the middle of the connecting pipe, the connection between the connecting pipe and the gate cavity is sealed and the two cavities are connected, a gate valve plate that can be raised and lowered to complete opening / closing is arranged inside the gate cavity, the bottom of the gate cavity is connected to a bottom box, the bottom of the bottom box is provided with a drive assembly that can be driven to rotate, and the bottom of the bottom box cavity is symmetrically provided with driven assemblies that can rotate with the drive assembly and then rotate synchronously, and the driven assembly includes a cleaning rubber plate that plays a role in cleaning the gate valve plate.

[0007] Preferably, a through groove is provided through the middle of the gate valve plate, a closing door is provided in the lower middle portion of the gate valve plate, and the through groove and the closing door match the inner diameter of the connecting pipe oil pipe.

[0008] Preferably, a supporting plate is fixedly connected to the middle part of the bottom box cavity, and the top size of the supporting plate matches the bottom size of the gate valve plate.

[0009] Preferably, the driving assembly includes a motor, which is fixedly mounted on the bottom of the bottom box; the output end of the motor is fixedly connected to a first rotating shaft; the first rotating shaft and the groove at the bottom of the bottom box are sealed; the top of the first rotating shaft is fixedly connected to a first conical tooth; the first conical tooth is located in the middle of the bottom of the bottom box cavity.

[0010] Preferably, the driven components are two groups symmetrically arranged at left and right positions in the bottom box cavity, and the driven components include a second rotating shaft.

[0011] Preferably, a bearing is provided at one end of one side of the second rotating shaft, the outer surface of the second rotating shaft is fixedly connected to the inner ring of the bearing, and the outer ring of the bearing is fixedly connected to the inner wall of the bottom box cavity.

[0012] Preferably, a sleeve is fixedly connected to the middle of the outer surface of the second rotating shaft, and a cleaning rubber plate is fixedly connected to the outer side of the sleeve in an annular shape, and the cleaning rubber plate is in contact with the outer surface of the gate valve plate.

[0013] Preferably, the driven component further comprises a second conical tooth, wherein the second conical tooth is fixedly connected to the other end of the second rotating shaft away from the bearing, and the bearing is meshingly connected to the first conical tooth.

[0014] The beneficial effects of the utility model are:

[0015] The utility model comprises a connecting pipe, a gate cavity is arranged in the middle of the connecting pipe, a sealing treatment is adopted at the connection between the connecting pipe and the gate cavity, and the two cavities are connected, a gate valve plate which can be raised and lowered to complete opening / closing is arranged inside the gate cavity, a bottom box is connected to the bottom of the gate cavity, a driving component which can be driven to rotate is arranged at the bottom of the bottom box, and a driven component which can rotate with the driving component and thus rotate synchronously is symmetrically arranged in the bottom box cavity, and the driven component comprises a scraping rubber plate which plays a role of scraping the gate valve plate. Through this design, the problem that the corrosion resistance of the flat gate valve increased by the anti-corrosion coating in the prior art is easily affected by external factors, such as impact and weather changes, which will damage the coating and cause the protected metal surface to be corroded is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the front structure of the overall device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure inside the bottom box cavity of the utility model;

[0019] Figure 3 This is a schematic diagram of the gate valve plate structure of the utility model;

[0020] Figure 4 for Figure 2 A magnified image of area A;

[0021] Figure 5 It is a schematic diagram of the front structure of the driving component and the driven component;

[0022] Figure 6 It is a schematic diagram of the top structure of the driving component and the driven component;

[0023] In the figure: 1, connecting pipe; 2, gate chamber; 3, bottom box; 31, supporting plate; 4, driving assembly; 41, motor; 42, first rotating shaft; 43, first conical tooth; 5, gate plate; 51, through groove; 52, closing door; 6, driven assembly; 61, second rotating shaft; 62, connecting sleeve; 63, cleaning rubber plate; 64, second conical tooth; 65, bearing. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 and Figure 2 The utility model provides a technical solution: a high-pressure corrosion-resistant flat gate valve, comprising a connecting pipe 1, a gate chamber 2 is arranged in the middle of the connecting pipe 1, the connecting pipe 1 and the gate chamber 2 are sealed at the connection and the two cavities are connected, a gate valve plate 5 which can be raised and lowered to complete opening / closing is arranged inside the gate chamber 2, a bottom box 3 is connected to the bottom of the gate chamber 2, a driving component 4 which can be driven to rotate is arranged at the bottom of the bottom box 3, and a driven component 6 which can rotate with the driving component 4 and then rotate synchronously is symmetrically arranged in the cavity of the bottom box 3, and the driven component 6 includes a scraping rubber plate 63 which plays a role in scraping the gate valve plate 5. This design solves the problem that the corrosion resistance of the flat gate valve is easily affected by external factors in the prior art by increasing the corrosion resistance of the flat gate valve through an anti-corrosion coating, such as impact and weather changes, which will damage the coating and cause the protected metal surface to be corroded.

[0026] See also Figure 3 A through groove 51 is formed through the middle of the gate valve plate 5, and a closing door 52 is formed in the middle and lower part of the gate valve plate 5. The through groove 51 and the closing door 52 match the inner diameter of the connecting pipe 1. When the gate valve plate 5 is moved upward until the through groove 51 is aligned with the inner diameter of the connecting pipe 1, the connecting pipe 1 is circulated. When the gate valve plate 5 is moved downward until the closing door 52 is aligned with the inner diameter of the connecting pipe 1, the connecting pipe 1 is closed.

[0027] See also Figure 4 A supporting plate 31 is fixedly connected to the middle of the bottom box 3 cavity, and the top size of the supporting plate 31 matches the bottom size of the gate valve plate 5. This design can prevent the gate valve plate 5 from contacting the second conical teeth 64 during the downward movement, thereby preventing the two from contacting and colliding.

[0028] See also Figure 5 - Figure 6The driving assembly 4 includes a motor 41, which is fixedly mounted at the bottom of the bottom box 3. The output end of the motor 41 is fixedly connected to a first rotating shaft 42. The first rotating shaft 42 and the bottom slot of the bottom box 3 are sealed. The top of the first rotating shaft 42 is fixedly connected to a first conical tooth 43, which is located at the middle of the bottom of the bottom box 3 cavity. The driven assembly 6 is two groups symmetrically arranged at the left and right positions in the cavity of the bottom box 3. The driven assembly 6 includes a second rotating shaft 61. A bearing 65 is arranged at one end of the second rotating shaft 61. The outer surface of the second rotating shaft 61 is fixedly connected to the inner ring of the bearing 65. The outer ring of the bearing 65 is fixedly connected to the inner wall of the cavity of the bottom box 3. This design can complete the limiting work of the second rotating shaft 61 in the cavity of the bottom box 3 to prevent the second rotating shaft 61 from loosening. At the same time, the second rotating shaft 61 and the inner wall of the bottom box 3 are connected through the bearing 65, which can make the second rotating shaft 61 rotate more smoothly. The middle part of the outer surface of the second rotating shaft 61 is fixedly connected with a connecting sleeve 62, and the outer side of the connecting sleeve 62 is annularly distributed and fixedly connected with a cleaning rubber plate 63. The cleaning rubber plate 63 fits the outer surface of the gate valve plate 5. The driven component 6 also includes a second conical tooth 64, and the second conical tooth 64 is fixedly connected to the other end of the second rotating shaft 61 away from the bearing 65. The bearing 65 is meshed with the first conical tooth 43. Through this design, the left and right sides of the cleaning rubber plates 63 can rotate synchronously to scrape the closing door 52 in the middle and lower part of the gate valve plate 5, so as to avoid the circulating liquid from adhering to the surface of the closing door 52 for a long time and causing corrosion thereof.

[0029] The working principle and use process of the utility model are as follows:

[0030] When the gate valve plate 5 moves down to the point where the through groove 51 is aligned with the inner diameter of the connecting pipe 1, the device as a whole is in a flow state, and the closing door 52 located in the middle and lower part of the gate valve plate 5 will move synchronously into the cavity of the bottom box 3 as the gate valve plate 5 moves downward. At this time, the motor 41 is started, so that the output end of the motor 41 drives the first rotating shaft 42 and the first conical teeth 43 located at the top of the first rotating shaft 42 to rotate synchronously. At this time, the second conical teeth 64 meshingly connected to both sides of the first conical teeth 43 rotate synchronously and drive the connecting sleeve 62 and the cleaning rubber plate 63 to rotate. At this time, the cleaning rubber plate 63 is attached to the closing door 52 and scrapes the closing door 52 under its rotation. This design scrapes off the liquid and chemical residues on the surface of the closing door 52 to increase the corrosion resistance of the closing door 52. This design solves the problem in the prior art that the corrosion resistance of the flat gate valve increased by the anti-corrosion coating is easily affected by external factors, such as impact and weather changes, which will damage the coating and cause the protected metal surface to be corroded.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure corrosion-resistant flat gate valve, comprising a connecting pipe (1), characterized in that: A gate chamber (2) is arranged in the middle of the connecting pipe (1), the connection between the connecting pipe (1) and the gate chamber (2) is sealed and the two chambers are connected, a gate valve plate (5) which can be raised and lowered to open / close is arranged inside the gate chamber (2), the bottom of the gate chamber (2) is connected to a bottom box (3), the bottom of the bottom box (3) is provided with a rotatable driving component (4), and a driven component (6) which can rotate synchronously with the driving component (4) is symmetrically arranged inside the cavity of the bottom box (3), and the driven component (6) includes a scraping rubber plate (63) which plays a role in scraping the gate valve plate (5).

2. A high pressure corrosion resistant flat gate valve according to claim 1, characterized in that: A through groove (51) is provided through the middle of the gate valve plate (5), and a closing door (52) is provided at the lower middle portion of the gate valve plate (5). The through groove (51) and the closing door (52) match the inner diameter of the connecting pipe (1).

3. A high pressure corrosion resistant flat gate valve according to claim 1, characterized in that: A supporting plate (31) is fixedly connected to the middle of the cavity of the bottom box (3), and the top size of the supporting plate (31) matches the bottom size of the gate valve plate (5).

4. A high pressure corrosion resistant flat gate valve according to claim 1, characterized in that: The driving assembly (4) comprises a motor (41), the motor (41) is fixedly mounted on the bottom of the bottom box (3), the output end of the motor (41) is fixedly connected to a first rotating shaft (42), the first rotating shaft (42) and the bottom groove of the bottom box (3) are sealed, the top of the first rotating shaft (42) is fixedly connected to a first conical tooth (43), and the first conical tooth (43) is located in the middle of the bottom of the bottom box (3) cavity.

5. The high-pressure corrosion-resistant flat gate valve according to claim 1, characterized in that: The driven components (6) are divided into two groups and are symmetrically arranged at left and right positions in the cavity of the bottom box (3). The driven components (6) include a second rotating shaft (61).

6. A high pressure corrosion resistant flat gate valve according to claim 5, characterized in that: A bearing (65) is provided at one end of one side of the second rotating shaft (61); the outer surface of the second rotating shaft (61) is fixedly connected to the inner ring of the bearing (65); and the outer ring of the bearing (65) is fixedly connected to the inner wall of the bottom box (3).

7. A high pressure corrosion resistant flat gate valve according to claim 5, characterized in that: A connecting sleeve (62) is fixedly connected to the middle of the outer surface of the second rotating shaft (61), and a cleaning rubber plate (63) is fixedly connected to the outer side of the connecting sleeve (62) in an annular shape, and the cleaning rubber plate (63) is in contact with the outer surface of the gate valve plate (5).

8. The high-pressure corrosion-resistant flat gate valve according to claim 1, characterized in that: The driven component (6) further comprises a second conical tooth (64), wherein the second conical tooth (64) is fixedly connected to the other end of the second rotating shaft (61) away from the bearing (65), and the bearing (65) is meshingly connected to the first conical tooth (43).

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