Electric wedge gate valve

Abstract

The utility model discloses an electric wedge-type gate valve, which relates to the technical field of valves and particularly comprises a valve body, a hollow column is arranged at the top of the valve body, an opening and closing structure is arranged at the bottom end of an inner cavity of the hollow column, and an electric execution structure is arranged at the top end of the inner cavity of the hollow column. The opening and closing structure comprises a shell clamped to the bottom end of the inner cavity of the hollow column, through holes matched with the inner cavity of the valve body are formed in the two sides of the bottom end of the shell, a telescopic sleeve is fixedly connected to the bottom end of the inner cavity of the shell, a lead screw is movably connected to the middle of the top end of the inner cavity of the shell, and the outer ring of the lead screw is in threaded connection with a threaded pipe. And the bottom of the threaded pipe is fixedly connected with a wedge-shaped valve plate. According to the electric wedge type gate valve, the wedge-shaped valve plate is separated from fluid flowing in the valve body through the telescopic sleeve, the wedge-shaped valve plate is prevented from making direct contact with the fluid, therefore, the wedge-shaped valve plate can be prevented from being eroded by the fluid, the service life of the wedge-shaped valve plate is prolonged, the fluid can enter the shell, and cleaning of the gate valve is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric wedge-type gate valve. Background Art

[0002] The gate valve is a gate plate of an opening and closing member, and the movement direction of the gate plate is perpendicular to the direction of the fluid. The gate plate is used to adjust the flow rate in the pipe. It is now widely used in pipeline transportation control of liquids and gases such as tap water and natural gas. The electric wedge gate valve is a type of gate valve, and is named because its sealing surface is at a certain angle to the vertical center line, that is, the two sealing surfaces are wedge-shaped. At present, the wedge gate valve disclosed in the prior art is usually composed of a valve body, a valve plate, a valve stem and an electric actuator. When the electric actuator applies force to open the valve, the valve plate slides out of the gap between the valve bodies, and the fluid can pass through; conversely, when the actuator applies force to close the valve, the valve plate slides back into the gap of the valve body to completely cut off the fluid. However, since this type of gate valve is in direct contact with the fluid when the valve plate is in use, the valve plate is prone to erosion, which affects the service life of the valve plate. In addition, during the opening and closing process of the valve plate, the fluid adhering to the valve plate will move with the valve plate, causing pollution to the hollow part in the valve body, which is not conducive to the cleaning of the gate valve; based on this, the present application proposes an electric wedge gate valve. Utility Model Content

[0003] The utility model provides an electric wedge-type gate valve, which solves the problem proposed in the above background technology that when the gate valve is in use, the valve plate is in direct contact with the fluid, the valve plate is prone to erosion, and the service life of the valve plate is affected; during the opening and closing process of the valve plate, the fluid adhering to the valve plate will move with the valve plate, causing pollution to the hollow part in the valve body, which is not conducive to the cleaning of the gate valve.

[0004] The utility model provides the following technical solution: an electric wedge-type gate valve, comprising a valve body, a hollow column is provided on the top of the valve body, an opening and closing structure is provided at the bottom end of the inner cavity of the hollow column, and an electric execution structure is provided at the top end of the inner cavity of the hollow column;

[0005] The opening and closing structure comprises a shell body clamped with the bottom end of the inner cavity of the hollow column, both sides of the bottom end of the shell body are provided with through holes adapted to the inner cavity of the valve body, the bottom end of the inner cavity of the shell body is fixedly connected with a telescopic sleeve, the middle part of the top end of the inner cavity of the shell body is movably connected with a screw rod, the outer ring of the screw rod is threadedly connected with a threaded pipe, the bottom of the threaded pipe is fixedly connected with a wedge-shaped valve plate, the bottom end of the wedge-shaped valve plate close to the through hole is movably connected with an extrusion roller, and the extrusion roller is connected to the wedge-shaped valve plate through a spring;

[0006] The electric execution structure comprises a rotating motor clamped with the top of the screw rod, and the rotating motor is connected to the hollow column through a top cover.

[0007] Preferably, a concave hole is provided in the middle of the top end of the wedge-shaped valve plate, the threaded tube is fixedly connected to the top of the concave hole, and the screw rod is movably connected to the inner cavity of the concave hole.

[0008] Preferably, a slot is provided in the middle of the top of the screw rod, and a block adapted to the slot is fixedly connected to the end of the output shaft of the rotating motor.

[0009] Preferably, a positioning block is fixedly connected to the bottom of the top cover, and the positioning block is movably connected to the inner cavity of the hollow column.

[0010] Preferably, a lifting ring is fixedly connected to one side of the top of the shell, the size of the top end of the shell is larger than the size of the bottom end thereof, and the bottom end of the shell is wedge-shaped.

[0011] Preferably, the squeezing roller comprises a round rod, the outer ring in the middle of the round rod is movably sleeved with a positioning block, and the positioning block is connected to the wedge-shaped valve plate by a spring; at least two squeezing rollers are provided on one side of the bottom end of the wedge-shaped valve plate, and two adjacent positioning blocks are in a staggered state.

[0012] Preferably, the height of the positioning block is the same as the distance between the top of the shell and the top cover.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The electric wedge gate valve has a wedge-shaped valve plate and a fluid flowing in the valve body separated by a telescopic sleeve, which avoids direct contact between the wedge-shaped valve plate and the fluid, thereby preventing the wedge-shaped valve plate from being eroded by the fluid and improving the service life of the wedge-shaped valve plate; and when the wedge-shaped gate valve is in an open state, the extrusion roller and the wedge-shaped valve plate can limit the telescopic sleeve, so that the telescopic sleeve can remain flat under the impact force of the fluid, which is convenient for cleaning the inside of the gate valve.

[0015] 2. The electric wedge-type gate valve, through the setting of the opening and closing structure and the electric actuator structure, the electric actuator structure and the opening and closing structure can be quickly disassembled and assembled, and the opening and closing structure and the hollow column can be quickly disassembled and assembled, which is convenient for the replacement and maintenance of the opening and closing structure and the use of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the structure of the utility model;

[0017] Figure 2 The utility model structure Figure 1 Schematic cross-section;

[0018] Figure 3 The utility model structure Figure 2 Front view schematic diagram;

[0019] Figure 4This is an exploded schematic diagram of the wedge-shaped valve plate of the utility model structure;

[0020] Figure 5 The utility model structure Figure 1 Explosion diagram.

[0021] In the figure: 1. valve body; 2. hollow column; 3. top cover; 4. shell; 5. positioning block; 6. rotating motor; 7. clamping block; 8. screw rod; 9. threaded pipe; 10. wedge-shaped valve plate; 11. telescopic sleeve; 12. spring; 13. positioning block; 15. round rod; 16. through hole; 17. lifting ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in 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 in 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.

[0023] The utility model provides an electric wedge-type gate valve, comprising a valve body 1, a hollow column 2 is provided on the top of the valve body 1, the inner cavity of the hollow column 2 is in a connected state with the inner cavity of the valve body 1, and an opening and closing structure is provided at the bottom end of the inner cavity of the hollow column 2. The opening and closing structure comprises a shell 4 that is clamped with the bottom end of the inner cavity of the hollow column 2, the size of the top end of the shell 4 is larger than the size of the bottom end, the bottom end of the shell 4 is wedge-shaped, and the top end of the shell 4 is located in the inner cavity of the hollow column 2, and the bottom of the shell 4 is in contact with the bottom of the inner cavity of the valve body 1. Through the setting of the shape of the shell 4, the shell 4 can be quickly disassembled and assembled under the action of external force, which is convenient for replacement and maintenance of the opening and closing structure.

[0024] A lifting ring 17 is fixed to one side of the top of the shell 4 , and the provision of the lifting ring 17 makes it convenient for the user to take and place the shell 4 .

[0025] A screw rod 8 is movably connected to the middle of the top of the housing 4, a threaded tube 9 is threadedly connected to the outer ring of the screw rod 8, a wedge-shaped valve plate 10 is fixedly connected to the bottom of the threaded tube 9, the wedge-shaped valve plate 10 is movably connected to the inner cavity of the housing 4, and a concave hole is provided in the middle of the top of the wedge-shaped valve plate 10, the threaded tube 9 is fixedly connected to the top of the concave hole, and the screw rod 8 is movably connected to the inner cavity of the concave hole. It can be seen from the above description that the rotation of the screw rod 8 can make the threaded tube 9 move in the direction where the screw rod 8 is located, and the threaded tube 9 drives the wedge-shaped valve plate 10 to move when moving.

[0026] Through holes 16 are provided on both sides of the bottom end of the shell 4, and the inner diameter of the through hole 16 is adapted to the inner cavity of the valve body 1. A telescopic sleeve 11 is fixedly connected to the bottom end of the inner cavity of the shell 4, and a part of the telescopic sleeve 11 connected to the shell 4 is located above the through hole 16. The wedge-shaped valve plate 10 is located in the inner cavity of the telescopic sleeve 11. When the wedge-shaped valve plate 10 moves downward, the wedge-shaped valve plate 10 can squeeze the telescopic sleeve 11 to change the length of the telescopic sleeve 11. The telescopic sleeve 11 can fill the gap between the wedge-shaped valve plate 10 and the shell 4 to achieve the closing of the wedge-shaped gate valve. When the wedge-shaped valve plate 10 moves upward, the resilience of the telescopic sleeve 11 itself can cause the telescopic sleeve 11 to shrink, and the wedge-shaped gate valve can be opened.

[0027] In some embodiments of the present application, the telescopic sleeve 11 is made of rubber.

[0028] It can be seen from the above description that when the electric wedge gate valve is in use, the wedge-shaped valve plate 10 is separated from the fluid by the telescopic sleeve 11. The telescopic sleeve 11 protects the wedge-shaped valve plate 10 to prevent the wedge-shaped valve plate 10 from being eroded by the fluid, thereby increasing the service life of the wedge-shaped valve plate 10.

[0029] The bottom end of the wedge-shaped valve plate 10 near the through hole 16 is movably connected with a squeezing roller, and the squeezing roller is connected to the wedge-shaped valve plate 10 via a spring 12. Through the arrangement of the squeezing roller and the spring 12, the squeezing roller can squeeze and limit the telescopic sleeve 11 under the action of the rebound force of the spring 12, so that when the gate valve is opened, the telescopic sleeve 11 can be prevented from bulging upward due to the squeezing of the fluid, so that the bottom of the telescopic sleeve 11 can be kept flat, which is convenient for the use and cleaning of the gate valve.

[0030] In some embodiments of the present application, the extrusion roller includes a round rod 15, and the outer ring in the middle of the round rod 15 is movably sleeved with a positioning block 13, the positioning block 13 is connected to the wedge-shaped valve plate 10 by a spring 12, and the outer diameter of the round rod 15 is not less than the distance between the bottom end of the wedge-shaped valve plate 10 and the top end of the telescopic sleeve 11, so that the round rod 15 can limit the telescopic sleeve 11, and the size of the round rod 15 is set according to needs and is not limited here.

[0031] At least two squeezing rollers are disposed on one side of the bottom end of the wedge-shaped valve plate 10 , and two adjacent positioning blocks 13 are in a staggered state, so that the squeezing rollers can limit the telescopic sleeve 11 .

[0032] An electric actuator structure is provided at the top of the inner cavity of the hollow column 2. The electric actuator structure includes a rotating motor 6 that is clamped with the top of the screw rod 8, and the rotating motor 6 is connected to the hollow column 2 through the top cover 3. A clamping groove is provided in the middle of the top of the screw rod 8, and a clamping block 7 that is adapted to the clamping groove is fixedly connected to the end of the output shaft of the rotating motor 6 through a reducer. Through the setting of the clamping block 7 and the clamping groove, the rotating motor 6 and the screw rod 8 can be quickly disassembled and assembled. When the rotating motor 6 rotates, it can drive the screw rod 8 to rotate, thereby realizing the opening and closing of the wedge-shaped valve plate 10.

[0033] A positioning block 5 is fixedly connected to the bottom of the top cover 3, and the positioning block 5 is movably connected to the inner cavity of the hollow column 2, and the distance between the top of the shell 4 and the top cover 3 is the same as the height of the positioning block 5. With this arrangement, when the gate valve is in use, the positioning block 5 can limit the shell 4, thereby improving the firmness of the connection between the shell 4 and the hollow column 2.

[0034] To sum up: when the electric wedge gate valve is in use, the rotation of the rotating motor 6 can drive the screw rod 8 to rotate, and the rotation of the screw rod 8 causes the threaded tube 9 to move in the direction of the screw rod 8, and the threaded tube 9 drives the wedge-shaped valve plate 10 fixedly connected thereto to move, thereby realizing the opening and closing of the wedge gate valve, and when the wedge gate valve is in use, the telescopic sleeve 11 protects the wedge valve plate 10 to avoid direct contact between the fluid and the wedge valve plate 10, which can avoid the erosion of the wedge valve plate 10 by the fluid and improve the service life of the wedge valve plate 10, and when the wedge gate valve is in an open state, the extrusion roller can limit the telescopic sleeve 11 under the action of the rebound force of the spring 12, so that the bottom of the telescopic sleeve 11 can be kept flat, which is convenient for cleaning the gate valve.

[0035] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electric wedge gate valve, comprising a valve body (1), characterized in that: A hollow column (2) is provided at the top of the valve body (1), an opening and closing structure is provided at the bottom end of the inner cavity of the hollow column (2), and an electric actuator structure is provided at the top end of the inner cavity of the hollow column (2); The opening and closing structure comprises a shell (4) which is clamped with the bottom end of the inner cavity of the hollow column (2); both sides of the bottom end of the shell (4) are provided with through holes (16) which are adapted to the inner cavity of the valve body (1); the bottom end of the inner cavity of the shell (4) is fixedly connected with a telescopic sleeve (11); the middle part of the top end of the inner cavity of the shell (4) is movably connected with a screw rod (8); the outer ring of the screw rod (8) is threadedly connected with a threaded tube (9); the bottom of the threaded tube (9) is fixedly connected with a wedge-shaped valve plate (10); the bottom end of the wedge-shaped valve plate (10) close to the through hole (16) is movably connected with an extrusion roller; the extrusion roller is connected to the wedge-shaped valve plate (10) via a spring (12); The electric execution structure comprises a rotating motor (6) clamped to the top of the screw rod (8); the rotating motor (6) is connected to the hollow column (2) via a top cover (3).

2. The electric wedge gate valve according to claim 1, characterized in that: A concave hole is provided in the middle of the top end of the wedge-shaped valve plate (10), the threaded tube (9) is fixedly connected to the top of the concave hole, and the screw rod (8) is movably connected to the inner cavity of the concave hole.

3. The electric wedge gate valve according to claim 1, characterized in that: A slot is provided in the middle of the top of the screw rod (8), and a clamping block (7) adapted to the slot is fixedly connected to the end of the output shaft of the rotary motor (6).

4. The electric wedge gate valve according to claim 1, characterized in that: A positioning block (5) is fixedly connected to the bottom of the top cover (3), and the positioning block (5) is movably connected to the inner cavity of the hollow column (2).

5. The electric wedge gate valve according to claim 1, characterized in that: A lifting ring (17) is fixedly connected to one side of the top of the shell (4), the size of the top of the shell (4) is larger than the size of the bottom, and the bottom of the shell (4) is wedge-shaped.

6. The electric wedge gate valve according to claim 1, characterized in that: The squeezing roller comprises a round rod (15), the outer ring of the middle part of the round rod (15) is movably sleeved with a positioning block (13), and the positioning block (13) is connected to the wedge-shaped valve plate (10) via a spring (12); at least two squeezing rollers are arranged on one side of the bottom end of the wedge-shaped valve plate (10), and two adjacent positioning blocks (13) are in a staggered state.

7. The electric wedge gate valve according to claim 4, characterized in that: The height of the positioning block (5) is the same as the distance between the top of the shell (4) and the top cover (3).

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