Electric gate valve

Abstract

The invention relates to the field of valve structures, and discloses an electric gate valve which comprises a transmission component, a gate valve element and an abutting structure, and the transmission component is connected to a valve body; the gate valve element is connected to the inner side of the valve body in a sliding mode, and the output end of the transmission component is connected with the gate valve element. The abutting structure is hinged to the gate valve element and the transmission component so that the gate valve element can abut against the sealing valve port. The gate valve has the beneficial effects that when the transmission component moves the gate valve element to the bottom of the valve body, force is applied to the gate valve element through the abutting structure, and the gate valve element abuts against the sealing valve port; when the gate valve is opened and closed, only the abutting structure needs to be swung to relieve the abutting force on the gate valve element, so that the friction resistance when the gate valve is opened and closed is reduced, the abutting structure and the gate valve element are prevented from being seriously abraded after being used for a long time, the sealing effect is ensured, and the service life of the gate valve is prolonged.

Description

Technical Field

[0001] The invention relates to the field of valve structures, and in particular to an electric gate valve. Background Art

[0002] Square or rectangular pipes are used in vacuum equipment pipelines, pressure air equipment pipelines, purification equipment pipelines and other places. Square or rectangular pipe valves must also achieve a sealing effect. The sealing of square or rectangular pipe valves is difficult.

[0003] The square gate valve sealing method in the prior art adopts a bevel block structure with an inclined surface to seal against the gate valve core. The bevel block structure has a large friction resistance when opening and closing the gate valve, and is severely worn after long-term use, affecting the sealing effect. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the friction resistance of the inclined block structure when opening and closing the gate valve is relatively large, and it is seriously worn after long-term use, which affects the sealing effect. The purpose is to provide an electric gate valve, in which the abutment structure is hinged on the transmission component and the gate valve core. When opening and closing the gate valve, it is only necessary to swing the abutment structure to release the abutment force on the gate valve core, thereby reducing the friction resistance when opening and closing the gate valve, preventing the abutment structure and the gate valve core from being seriously worn after long-term use, ensuring the sealing effect, and increasing the service life of the gate valve.

[0005] The present invention is achieved through the following technical solutions: An electric gate valve comprises a transmission component, a gate valve core and an abutment structure, wherein the transmission component is connected to a valve body; the gate valve core is slidably connected to the inner side of the valve body, and the output end of the transmission component is connected to the gate valve core; the abutment structure is hinged to the gate valve core and the transmission component respectively so that the gate valve core abuts against a sealing valve port.

[0006] The beneficial effect of the present invention is that by connecting the transmission component to the valve body, the gate valve core can be slidably connected to the inner side of the valve body, and the output end of the transmission component is connected to the gate valve core, so that the gate valve core is driven up and down along the inner side of the valve body by the transmission component, and a supporting structure is provided, which is respectively hinged to the gate valve core and the transmission component, so that when the transmission component moves the gate valve core to the bottom of the valve body, the gate valve core is forced by the supporting structure to abut the gate valve core against the sealing valve port. Since the supporting structure is hinged on the transmission component and the gate valve core, when opening and closing the gate valve, it is only necessary to swing the supporting structure to release the abutting force on the gate valve core, thereby reducing the friction resistance when opening and closing the gate valve, preventing the supporting structure and the gate valve core from being seriously worn after long-term use, ensuring the sealing effect, and improving the service life of the gate valve.

[0007] In some embodiments, the transmission component includes an electric gate valve motor, a ball screw nut and a movable carriage, wherein the movable carriage is slidably connected to the inner side of the valve body, the ball screw nut is fixedly connected to the top of the movable carriage, the electric gate valve motor is fixedly connected to the top of the valve body, and the free end of the output shaft of the electric gate valve motor is connected to a ball screw, which is screwed with the ball screw nut. By arranging the ball screw nut at the top of the movable carriage, the electric gate valve motor is fixedly connected to the top of the valve body, and the free end of the output shaft of the electric gate valve motor is connected to a ball screw, so that the ball screw can be driven to rotate by the electric gate valve motor, and the movable carriage can be driven to move up and down when the ball screw rotates.

[0008] In some embodiments, sliders are provided on both sides of the movable carriage, guide rails are provided on both side walls of the inner cavity of the valve body, the guide rails are vertically provided on the valve body, and the sliders are slidably connected to the guide rails. By providing a slider on the movable carriage to slide with the guide rails vertically connected to the inner side of the valve body, the sliding track of the movable carriage is limited, and the friction resistance of the movable carriage when it moves up and down is also reduced.

[0009] In some embodiments, the movable carriage is in the shape of a rectangular frame as a whole, a support rod is provided in the middle of the inner cavity of the movable carriage, and the abutment structure is hinged to the support rod and the gate valve core respectively. By providing a support rod in the middle of the inner cavity of the movable carriage, and hinged to the support rod and the gate valve core respectively, when the gate valve core moves up and down, and when the abutment structure abuts against the gate valve core, the middle part of the gate valve core is stressed, thereby ensuring the stability of the gate valve core, and further ensuring the stability of the sealing effect.

[0010] In some embodiments, since the current inclined structure occupies a large space of the gate valve, resulting in a large overall structure of the gate valve, the abutting structure includes a sealing gate push rod, the sealing gate push rod is in the shape of a long strip, and the two ends of the sealing gate push rod are respectively hinged to the support rod and one side of the gate valve core. By setting the sealing gate to be in the shape of a long strip, it is convenient to reduce the space occupied by the sealing gate push rod in the gate valve and reduce the overall structure of the gate valve. In addition, since the gate valve core has a certain thickness error during production and a certain error during installation, the thickness error and installation error of the gate valve core are eliminated by swinging the long strip sealing gate push rod, so that the gate valve core can maintain abutment with the sealing valve port, ensuring the stability of the sealing effect.

[0011] In some embodiments, the abutment structure further includes a first sealing gate hinge shaft and a second sealing gate hinge shaft, wherein the first sealing gate hinge shaft is horizontally arranged on the support rod, the second sealing gate hinge shaft is horizontally arranged on the gate valve core, and both ends of the sealing gate push rod are respectively hinged to the first sealing gate hinge shaft and the second sealing gate hinge shaft. By horizontally arranging the first sealing gate hinge shaft and the second sealing gate hinge shaft on the support rod and the gate valve core respectively, the sealing gate push rod can swing along the space between the support rod and the gate valve core, thereby abutting against the sealing valve port and sealing the sealing valve port.

[0012] In some embodiments, a sealing ring is sleeved on the outer periphery of the gate valve core, and the gate valve core is in the shape of a rectangular plate as a whole. By providing the sealing ring, the sealing valve port is sealed by the deformation of the sealing ring.

[0013] In some embodiments, the valve body is provided with a limited translation roller, the limited translation roller includes at least two limited translation rollers, the limited translation rollers are connected to the bottom of the inner cavity of the valve body, when the gate valve core moves down to the lower limit state, the top of the limited translation roller contacts the bottom of the gate valve core, and the gate valve core abuts against the sealing valve port, and the sealing valve port is located on the side of the limited translation roller away from the gate valve core. By setting the roller to limit the downward movement distance of the gate valve core, and also by rolling the roller to unload the force, the bottom of the gate valve core is protected.

[0014] In some embodiments, the limit translation roller and the movable carriage are both provided with micro switches, and the top and bottom of the gate valve core can contact the corresponding micro switches respectively. By providing the micro switches, it is convenient to limit the upper and lower limits of the movement of the gate valve core through the micro switches, and then the motor can be turned off at the upper and lower limits.

[0015] In some embodiments, an electric control box is further included, the electric control box is connected to the top of the valve body, a control terminal is arranged in the electric control box, and the control terminal is electrically connected to the electric gate valve motor and the micro switch. By setting the control terminal, when the micro switch moves the gate valve core to the upper and lower limits, a signal is sent to the control terminal through the micro switch, and the control terminal issues a closing instruction to the electric gate valve motor.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The gate valve core is driven to move up and down along the inner side of the valve body by a transmission component, and a supporting structure is provided to be hinged with the gate valve core and the transmission component respectively, so that when the transmission component moves the gate valve core to the bottom of the valve body, a force is applied to the gate valve core through the supporting structure to make the gate valve core rest against the sealing valve port. Since the supporting structure is hinged on the transmission component and the gate valve core, when opening and closing the gate valve, it is only necessary to swing the supporting structure to release the supporting force on the gate valve core, thereby reducing the friction resistance when opening and closing the gate valve, preventing the supporting structure and the gate valve core from being seriously worn after long-term use, ensuring the sealing effect, and improving the service life of the gate valve.

[0017] 2. The sealing gate is set to a long strip shape to reduce the space occupied by the sealing gate push rod in the gate valve and reduce the overall structure of the gate valve.

[0018] 3. Also, because the gate valve core has a certain thickness error during production and a certain position error during installation, the thickness error and installation error of the gate valve core are eliminated by swinging the long sealing gate push rod, so that the gate valve core can remain against the sealing valve port to ensure the stability of the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 It is the appearance structure diagram of the present invention; Figure 2 It is the internal structure diagram of the present invention; Figure 3 For the present invention Figure 2 Rear view of Figure 4 It is a longitudinal central sectional view of the present invention; Figure 5 It is a transverse central cross-sectional view of the present invention; Figure 6 It is the right side view of the present invention.

[0020] Marks and corresponding parts names in the attached drawings: 101-auxiliary manual rotary wheel, 102-electric control box, 103-square gate valve, 104-sealed valve port, 201-electric gate valve motor, 203-electric down button, 204-up position indicator light, 205-down position indicator light, 206-electric up button, 301-ball screw, 302-ball screw nut, 303-first sealing gate hinge shaft, 304-sealing gate push rod, 305-second sealing gate hinge shaft, 306-limited translation roller, 307-sealing ring, 308-gate valve core, 309-guide rail, 310-slider, 311-moving drag plate, 312-valve body. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0022] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0024] The terms "first", "second", etc. used in the present invention are only used to distinguish the corresponding components for the sake of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

[0025] This embodiment provides an electric gate valve. Figure 1-Figure 6 , including a transmission component, a gate valve core 308 and a supporting structure, the transmission component is connected to the valve body 312; the gate valve core 308 is slidably connected to the inner side of the valve body 312, and the output end of the transmission component is connected to the gate valve core 308; the supporting structure is hinged to the gate valve core 308 and the transmission component respectively, so that the gate valve core 308 is abutted against the sealing valve port 104. The gate valve core 308 is driven to move up and down along the inner side of the valve body 312 by a transmission component, and a supporting structure is provided which is hinged to the gate valve core 308 and the transmission component respectively, so that when the transmission component moves the gate valve core 308 to the bottom of the valve body 312, a force is applied to the gate valve core 308 through the supporting structure, and the gate valve core 308 is pressed against the sealing valve port 104. Since the supporting structure is hinged on the transmission component and the gate valve core 308, when opening and closing the gate valve, it is only necessary to swing the supporting structure to release the supporting force on the gate valve core 308, thereby reducing the friction resistance when opening and closing the gate valve, preventing the supporting structure and the gate valve core 308 from being seriously worn after long-term use, ensuring the sealing effect, and increasing the service life of the gate valve.

[0026] See also Figure 1-Figure 4 The transmission component includes an electric gate valve motor 201, a ball screw nut 302 and a movable carriage 311, wherein the movable carriage 311 is slidably connected to the inner side of the valve body 312, the ball screw nut is fixedly connected to the top of the movable carriage 311, the electric gate valve motor 201 is fixedly connected to the top of the valve body 312, and the free end of the output shaft of the electric gate valve motor 201 is connected with a ball screw, and the ball screw is screwed with the ball screw nut. By arranging the ball screw nut at the top of the movable carriage 311, the electric gate valve motor 201 is fixedly connected to the top of the valve body 312, and the free end of the output shaft of the electric gate valve motor 201 is connected with a ball screw, so that the ball screw can be driven to rotate by the electric gate valve motor 201, and the movable carriage 311 can be driven to move up and down when the ball screw rotates.

[0027] See also Figure 2-Figure 4 Slide blocks 310 are provided on both sides of the movable carriage 311, and guide rails 309 are provided on both side walls of the inner cavity of the valve body 312. The guide rails 309 are vertically provided on the valve body 312, and the slide blocks 310 are slidably connected to the guide rails 309. By providing the slide blocks 310 on the movable carriage 311 and slidingly cooperating with the guide rails 309 vertically connected to the inner side of the valve body 312, the sliding track of the movable carriage 311 is limited, and the friction resistance when the movable carriage 311 moves up and down is also reduced.

[0028] See also Figure 2 and Figure 5The movable carriage 311 is in the shape of a rectangular frame as a whole, and a support rod is provided in the middle of the inner cavity of the movable carriage 311, and the abutment structure is respectively hinged to the support rod and the gate valve core 308. By providing a support rod in the middle of the inner cavity of the movable carriage 311, and hinged to the support rod and the gate valve core 308 respectively, when the gate valve core 308 moves up and down, and when the abutment structure abuts against the gate valve core 308, the middle part of the gate valve core 308 is stressed, thereby ensuring the stability of the gate valve core 308, and further ensuring the stability of the sealing effect.

[0029] See also Figure 2 and Figure 4 Since the current inclined structure occupies a large space of the gate valve, resulting in a large overall structure of the gate valve, the abutting structure includes a sealing gate push rod 304, which is in a long strip shape as a whole, and the two ends of the sealing gate push rod 304 are respectively hinged to the support rod and one side of the gate valve core 308. By setting the sealing gate in a long strip shape, it is convenient to reduce the space occupied by the sealing gate push rod 304 in the gate valve and reduce the overall structure of the gate valve. In addition, since the gate valve core 308 has a certain thickness error during production and a certain error during installation, the thickness error and installation error of the gate valve core 308 are eliminated by swinging the long strip sealing gate push rod 304, so that the gate valve core 308 can maintain abutment with the sealing valve port 104, ensuring the stability of the sealing effect.

[0030] See also Figure 2 and Figure 4 The abutment structure also includes a first sealing gate hinge shaft 303 and a second sealing gate hinge shaft 305. The first sealing gate hinge shaft 303 is horizontally arranged on the support rod, and the second sealing gate hinge shaft 305 is horizontally arranged on the gate valve core 308. The two ends of the sealing gate push rod 304 are respectively hinged with the first sealing gate hinge shaft 303 and the second sealing gate hinge shaft 305. By horizontally arranging the first sealing gate hinge shaft 303 and the second sealing gate hinge shaft 305 on the support rod and the gate valve core 308, respectively, it is convenient for the sealing gate push rod 304 to swing along the space between the support rod and the gate valve core 308, so as to abut against the sealing valve port 104 and seal the sealing valve port 104. Specifically, the abutment structure is set to at least two to improve the abutment effect on the gate valve core 308.

[0031] See also Figure 4 Specifically, a mounting bracket is provided on the back of the gate valve core 308 , and the second sealing gate hinge shaft 305 is connected to the mounting bracket, and the second sealing gate hinge shaft 305 is parallel to the first sealing gate hinge shaft 303 .

[0032] See also Figures 2 to 5The outer periphery of the gate valve core 308 is provided with a sealing ring 307, and the gate valve core 308 is in a rectangular plate shape as a whole. By providing the sealing ring 307, the sealing valve port 104 is sealed by the deformation of the sealing ring 307. Specifically, the sealing ring 307 is a fluororubber sealing ring 307, which increases the service life of the sealing ring 307.

[0033] See also Figure 2 and Figure 4 The valve body 312 is provided with a limited translation roller 306, which includes at least two limited translation rollers 306, which are connected to the bottom of the inner cavity of the valve body 312. When the gate valve core 308 moves down to the lower limit state, the top of the limited translation roller 306 contacts the bottom of the gate valve core 308, and the gate valve core 308 abuts against the sealing valve port 104, which is located on the side of the limited translation roller 306 away from the gate valve core 308. The bottom of the gate valve core 308 is protected by setting a roller to limit the downward movement distance of the gate valve core 308 and unloading the force by rolling the roller.

[0034] See also Figure 2 and Figure 4 The limit translation roller 306 and the moving carriage 311 are both provided with micro switches, and the top and bottom of the gate valve core 308 can contact the corresponding micro switches respectively. By providing the micro switches, it is convenient to limit the upper and lower limits of the movement of the gate valve core 308 through the micro switches, and then the motor can be turned off at the upper and lower limits.

[0035] See also Figure 2 and Figure 4 , further comprising an electric control box 102, the electric control box 102 being connected to the top of the valve body 312, a control terminal being arranged in the electric control box 102, and the control terminal being electrically connected to the electric gate valve motor 201 and the micro switch. By arranging the control terminal, when the micro switch moves the gate valve core 308 to the upper and lower limits, a signal is sent to the control terminal through the micro switch, and the control terminal issues a closing instruction to the electric gate valve motor 201.

[0036] See also Figure 1 and 6Specifically, an electric down button 203, an upward in-position indicator light 204, a downward in-position indicator light 205, and an electric up button 206 are installed on the outside of the electric control box 102 of the square gate valve 103. The upward in-position indicator light 204 and the downward in-position indicator light 205 are electrically connected to the corresponding micro switches respectively. When the gate valve core 308 contacts the corresponding micro switch, the corresponding micro switch is closed, and then the corresponding in-position indicator light is lit to remind the operator that the gate valve core 308 is in position. The electric up button 206 and the electric down button 203 are both electrically connected to the electric gate valve motor 201. By pressing the electric up button 206 and the electric down button 203, the motor is driven to rotate forward or reverse, thereby realizing the gate valve core 308 to move up or down.

[0037] See also Figure 1 and Figure 6 A manual auxiliary manual rotary wheel 101 is also provided, and the auxiliary manual rotary wheel 101 is connected to the ball screw 301. When there is no power supply, the square gate valve 103 is opened and closed by the auxiliary manual rotary wheel 101.

[0038] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric gate valve, characterized in that: include: A transmission component connected to the valve body; A gate valve core, wherein the gate valve core is slidably connected to the inner side of the valve body, and the output end of the transmission member is connected to the gate valve core; The abutting structure is hinged to the gate valve core and the transmission component respectively, so that the gate valve core abuts against the sealing valve port.

2. The electric gate valve according to claim 1, characterized in that: The transmission component includes an electric gate valve motor, a ball screw nut and a movable carriage, the movable carriage is slidably connected to the inner side of the valve body, the ball screw nut is fixedly connected to the top of the movable carriage, the electric gate valve motor is fixedly connected to the top of the valve body, the free end of the output shaft of the electric gate valve motor is connected to a ball screw, and the ball screw is threadedly engaged with the ball screw nut.

3. The electric gate valve according to claim 2, characterized in that: Slide blocks are arranged on both sides of the movable carriage, guide rails are arranged on both side walls of the inner cavity of the valve body, the guide rails are arranged vertically on the valve body, and the slide blocks are slidably connected to the guide rails.

4. The electric gate valve according to claim 2, characterized in that: The movable carriage is in the shape of a rectangular frame as a whole, a support rod is arranged in the middle of the inner cavity of the movable carriage, and the abutment structure is hinged to the support rod and the gate valve core respectively.

5. The electric gate valve according to claim 4, characterized in that: The abutting structure comprises a sealing gate push rod, which is in the shape of a long strip as a whole, and two ends of the sealing gate push rod are respectively hinged to the support rod and one side of the gate valve core.

6. The electric gate valve according to claim 5, characterized in that: The abutment structure also includes a first sealing gate hinge shaft and a second sealing gate hinge shaft. The first sealing gate hinge shaft is horizontally arranged on the support rod, and the second sealing gate hinge shaft is horizontally arranged on the gate valve core. Both ends of the sealing gate push rod are respectively hinged to the first sealing gate hinge shaft and the second sealing gate hinge shaft.

7. The electric gate valve according to claim 1, characterized in that: The gate valve core is in the shape of a rectangular plate as a whole, and a sealing ring is sleeved on the outer periphery of the gate valve core.

8. The electric gate valve according to any one of claims 1 to 7, characterized in that: A limit translation roller is arranged on the valve body, and the limit translation roller includes at least two limit translation rollers, and the limit translation roller is connected to the bottom of the inner cavity of the valve body. When the gate valve core moves down to the lower limit state, the top of the limit translation roller contacts the bottom of the gate valve core, and the gate valve core abuts against the sealing valve port, and the sealing valve port is located on the side of the limit translation roller away from the gate valve core.

9. The electric gate valve according to claim 8, characterized in that: The limit translation roller and the movable carriage are both provided with micro switches, and the top and the bottom of the gate valve core can be respectively in contact with the corresponding micro switches.

10. The electric gate valve according to claim 9, characterized in that: It also includes an electric control box, which is connected to the top of the valve body. A control terminal is arranged in the electric control box, and the control terminal is electrically connected to the electric gate valve motor and the micro switch.

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