CN215568028U - Sealed gate valve - Google Patents

Abstract

The utility model relates to a sealed gate valve, which moves a gate plate to open a blanking channel in the blanking process, so that materials (such as fixed particles and the like) can enter from one end of the blanking channel and fall out from the other end of the blanking channel. When the blanking channel is opened by the gate plate, materials are easy to accumulate in the gap, and the sealing performance between the first sealing element and the gate plate and the service life of the first sealing element are affected. Therefore, the shunt pipe is arranged outside the blanking part of the sealed gate valve, and the shunt pipe is communicated with an external air source when blanking is finished or is carried out, so that the blown gas can blow back the materials in the gap into the blanking channel, particles in the gap can be effectively cleaned, and the sealing performance of the gap is ensured; meanwhile, the friction force on the flashboard is reduced, and the service life of the first sealing element is prolonged. In addition, the abrasion of the first sealing element is reduced, the replacement period of the first sealing element is prolonged, the equipment cost is reduced, the product quality is guaranteed, and the gate valve is improved to have a high value.

Description

Sealed gate valve

Technical Field

The utility model relates to the technical field of gate valve equipment, in particular to a sealed gate valve.

Background

At present, a sealing ring structure is generally arranged on the pneumatic gate, and the sealing ring is matched with the gate plate so as to improve the air tightness of the gate structure. When the pneumatic gate is applied to solid particle conveying, after the gate plate is opened, the solid particles can easily fall into the gap of the sealing ring. The more particulate matters accumulate in the gaps of the sealing ring along with the accumulation of time, so that the sealing performance of the sealing ring is easily damaged; on the other hand, the friction force between the gate plate and the sealing ring can be increased, and the service life of the gate is shortened.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a sealed gate valve, which can effectively clean the particles in the gap and ensure the sealing performance; meanwhile, the friction force on the flashboard is reduced, and the service life of the sealing element is prolonged.

A sealed gate valve, said sealed gate valve comprising: the blanking device comprises a blanking piece, wherein a blanking channel is arranged in the blanking piece, a gap communicated with the blanking channel is arranged on the blanking piece, the gap extends along the circumferential direction of the blanking channel, and a first sealing element is arranged on the inner wall of the gap; a gate plate movable in the gap to block or unblock the blanking channel, the gate plate in sealing engagement with the first seal; the shunt tubes, the shunt tubes is located blanking spare dorsad one side of blanking passageway, be equipped with the purge hole on the shunt tubes, the purge hole orientation the gap sets up, shunt tubes one end is used for communicating with outside air supply.

According to the sealing type gate valve, in the blanking process, the gate is moved, the blanking channel is opened, and materials (such as fixed particles) can enter from one end of the blanking channel and fall out from the other end of the blanking channel. Because the gap can be exposed when the blanking channel is opened by the gate plate, materials are easy to accumulate in the gap in the blanking process so as to influence the sealing performance between the first sealing element and the gate plate and the service life of the gate plate. Therefore, the shunt pipe is arranged outside the blanking part of the sealing type gate valve, the shunt pipe is communicated with an external air source when the blanking is completed or the blanking is carried out, so that air flows into the shunt pipe and is blown out from the blowing hole. The blowing holes are arranged towards the gaps, so that blown gas can blow materials in the gaps back into the blanking channel, particles in the gaps are effectively cleaned, and the sealing performance of the blanking channel is guaranteed; meanwhile, the friction force on the flashboard is reduced, and the service life of the flashboard is prolonged.

In one embodiment, the inner wall of the gap is further provided with a second sealing piece which is distributed at a distance from the first sealing piece, and the first sealing piece and the second sealing piece are used for inserting the gate.

In one embodiment, the number of the blowing holes is two or more, and the two or more blowing holes are arranged at intervals along the length direction of the shunt pipe.

In one embodiment, the sealed gate valve further comprises an on-off valve, and the on-off valve is used for controlling the on-off between the shunt pipe and the external air source.

In one embodiment, the closed type gate valve further comprises a driver, an output shaft of the driver is in driving connection with the gate, and the driver is used for driving the gate to move in the gap.

In one embodiment, the sealed gate valve further comprises a start-stop member, and the start-stop member is used for controlling the start and stop of the driver.

In one embodiment, the sealed gate valve further comprises a controller, and the controller is electrically connected with the start-stop piece and is used for controlling the operation state of the start-stop piece.

In one embodiment, the sealing type gate valve further comprises an adjusting structure, the shunt pipe is arranged on the adjusting structure, and the adjusting structure is used for adjusting the position and/or the angle of the shunt pipe.

In one embodiment, the adjusting structure comprises a pipe clamp and a fastener, the pipe clamp is arranged on the blanking part, the shunt pipe can be adjustably clamped on the pipe clamp, and the fastener is used for locking the shunt pipe on the pipe clamp.

In one embodiment, the sealed gate valve further comprises a material guiding member, the material guiding member is located on a side of the blanking member, which is opposite to the blanking channel, and the material guiding member is used for guiding the material falling out of the gap into the blanking channel.

In one embodiment, the material guiding member is provided with a material guiding cavity, and a material receiving opening and a material guiding opening which are respectively communicated with the material guiding cavity, the material guiding member is arranged on the material dropping member, the material receiving opening is communicated with the gap, and the material guiding opening is communicated with the material dropping channel or is positioned in the material dropping channel.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a sealed type gate valve according to an embodiment;

FIG. 2 is a cross-sectional view of a closed type gate valve according to one embodiment when the gate valve is just opened;

FIG. 3 is a sectional view of a sealed gate valve during a blanking process according to an embodiment;

FIG. 4 is a cross-sectional view of a closed type gate valve according to an embodiment of the blanking process;

fig. 5 is a schematic view of a shunt tube according to one embodiment;

fig. 6 is a cross-sectional view of one embodiment of a shunt tube construction.

100. Sealing the gate valve; 110. a blanking member; 111. a blanking channel; 112. a gap; 113. a first seal member; 114. a second seal member; 120. a shutter plate; 130. a shunt tube; 131. a purge hole; 132. mounting a plate; 140. an on-off valve; 150. a driver; 160. a start-stop member; 170. a controller; 180. an adjustment structure; 181. a pipe clamp; 182. a fastener; 183. a gasket; 190. a material guide member; 191. a material guiding cavity; 192. a material receiving port; 193. a material guide port; 200. and (3) feeding.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In one embodiment, referring to fig. 1 to 6, a sealed type gate valve 100, the sealed type gate valve 100 includes: a blanking member 110, a gate 120, and a shunt tube 130. A blanking channel 111 is arranged in the blanking part 110, and a gap 112 communicated with the blanking channel 111 is arranged on the blanking part 110. The slit 112 extends along the circumference of the blanking channel 111, and the inner wall of the slit 112 is provided with a first sealing member 113. The shutter 120 is movable in the gap 112 to block or unblock the blanking passage 111, the shutter 120 being in sealing engagement with the first seal 113. The shunt tube 130 is located on one side of the blanking member 110 opposite to the blanking channel 111, and the shunt tube 130 is provided with a purge hole 131. The purge hole 131 is disposed toward the slit 112, and one end of the shunt tube 130 is used for communicating with an external air source.

In the blanking process of the above-mentioned sealed gate valve 100, referring to fig. 2 to 4, the gate 120 is moved to open the blanking channel 111, so that the material 200 (such as fixed particles, etc.) can enter from one end of the blanking channel 111 and fall out from the other end of the blanking channel 111. Since the shutter 120 exposes the gap 112 when opening the blanking channel 111, the material 200 is likely to accumulate in the gap 112 during the blanking process, which affects the sealing performance between the first sealing element 113 and the shutter 120 and the service life of the first sealing element 113. For this reason, the shunt tube 130 is arranged outside the blanking part 110 of the sealing type gate valve 100, and when the blanking is completed or is performed, the shunt tube 130 is communicated with an external air source, so that the air flows into the shunt tube 130 and is blown out from the purge hole 131. Because the purge holes 131 are arranged towards the gap 112, the blown gas can blow the material 200 in the gap 112 back into the blanking channel 111, so that particles in the gap 112 are effectively cleaned, and the sealing performance of the gap 112 is ensured; while reducing the friction on the gate plate 120 and extending the life of the first seal 113.

It should be noted that the movement of the shutter 120 in the gap 112 may be manually driven or may be automatically driven. When the movement of the shutter 120 in the gap 112 is automatically driven, an air cylinder, a hydraulic cylinder, an electric cylinder, or other automatic driving device may be provided on the shutter 120. Meanwhile, the distribution of the shunt tubes 130 on the periphery of the blanking member 110 can be varied, for example: when the number of the shunt tubes 130 is one, the shunt tubes 130 can be disposed at one side of the gap 112 (e.g., at a side of the gap 112 away from the gate 120 in the open state), or can extend around the periphery of the blanking member 110 to form a ring-shaped shunt tube 130. When the number of the shunt tubes 130 is more than two, the shunt tubes 130 are distributed at intervals along the periphery of the blanking member 110, so that the shunt tubes 130 can blow the gaps 112 from different directions.

Alternatively, the external gas source may be, but is not limited to, a gas generator or a compressed gas tank. Meanwhile, the first sealing member 113 may be selected as a rubber packing.

Further, referring to fig. 2, the inner wall of the gap 112 is further provided with a second sealing member 114 spaced apart from the first sealing member 113. The first seal 113 and the second seal 114 are interposed for the shutter 120. When the gate plate 120 is inserted between the first sealing element 113 and the second sealing element 114, the first sealing element 113 and the second sealing element 114 are respectively in sealing fit with two opposite side surfaces of the gate plate 120, so that the blanking channel 111 is ensured to have better air tightness when being blocked, and the phenomenon that the air tightness of the blanking element 110 is easily damaged due to the fact that the material 200 seeps into the gap 112 is effectively avoided. Also, in the present embodiment, the second sealing member 114 may be a rubber sealing ring.

In one embodiment, the number of the purge holes 131 is two or more. Two or more purge holes 131 are spaced along the length of the manifold 130. When the gas is introduced into the shunt tube 130, the gas is blown out from different blowing holes 131 along the length direction of the gas in sequence, so that the blowing range in the gap 112 is effectively increased, and the cleaning effect in the gap 112 is improved. In order to facilitate understanding of the length direction of the shunt 130, taking fig. 5 as an example, the length direction of the shunt 130 is the direction indicated by any arrow S in fig. 5.

In one embodiment, referring to fig. 1, the sealed-type gate valve 100 further includes an on-off valve 140. The on-off valve 140 is used for controlling the on-off between the shunt tube 130 and the external air source. When the materials 200 in the residual gap 112 need to be cleaned, the on-off valve 140 is opened, the shunt tube 130 is controlled to be communicated with an external gas source, so that the gas flows through the shunt tube 130 and the purge hole 131 in sequence and is blown into the gap 112; when the material 200 is cleaned, the on-off valve 140 is closed, and the communication between the shunt tube 130 and the external air source is cut off, so that the air blowing in the gap 112 is stopped. In this way, flexible automated control is achieved, for example: the on-off valve 140 is subjected to pulse control, so that pulse type compressed air removal can be realized, and a better cleaning effect is ensured.

Alternatively, the on-off valve 140 may be a valve structure such as an electromagnetic valve or an electric valve.

It should be noted that the number of the shunt tubes 130 may be one, or two or more. When the number of the shunt tubes 130 is more than two, the shunt tubes 130 may be connected to the same on-off valve 140 at the same time, or may be connected to different on-off valves 140 respectively. When more than two shunt tubes 130 are connected to the same on-off valve 140, the on-off valve 140 can be a three-way valve, a four-way valve, or other valve structure.

In one embodiment, referring to fig. 1, the sealed type gate valve 100 further includes a driver 150. An output shaft of the driver 150 is drivingly connected to the shutter 120, and the driver 150 is configured to drive the shutter 120 to move within the gap 112. In this way, the shutter 120 is automatically moved by the actuator 150, so that the blanking of the sealed type gate valve 100 is automatically controlled.

Alternatively, the actuator 150 may be a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or other actuation device.

It should be noted that the number of drivers 150 may be one, two, three or more. Referring to fig. 1, when there are two drivers 150, the two drivers 150 are respectively located at two opposite sides of the blanking member 110.

Further, referring to fig. 1, the sealed gate valve 100 further includes a start-stop member 160. The start stop 160 is used to control the start and stop of the drive 150. Thus, the start-stop operation of the driver 150 is effectively controlled by the start-stop member 160.

It should be noted that, when the actuator 150 is a cylinder or a hydraulic cylinder, the start-stop member 160 may be a valve structure such as an electromagnetic valve, an electric valve, a stop valve, a butterfly valve, etc., that is, when the start-stop member 160 is opened, compressed gas or compressed liquid, etc. may be introduced into the actuator 150. When the actuator 150 is an electric cylinder, the trigger 160 can be designed as a switch, i.e., when the trigger 160 is open, the actuator 150 is in the energized state.

Further, referring to fig. 1, the sealed type gate valve 100 further includes a controller 170. The controller 170 is electrically connected to the start-stop member 160 and is configured to control the operation state of the start-stop member 160, so that the controller 170 effectively controls the operation of the start-stop member 160. The controller 170 may be a single chip, an editable logic controller 170, or an electronic control unit.

Specifically, the controller 170 is electrically connected to the on-off valve 140.

In one embodiment, referring to fig. 1, the sealed-type gate valve 100 further includes an adjustment structure 180. The shunt tube 130 is disposed on the adjustment structure 180. The adjustment structure 180 is used to adjust the position and/or angle at which the shunt 130 is positioned. In this way, the position and/or the angle of the shunt tube 130 are/is changed by the adjusting structure 180, so that the purge hole 131 of the shunt tube 130 is better aligned with the gap 112, and the material 200 in the gap 112 is more accurately blown back into the blanking channel 111.

Further, referring to fig. 1, the adjusting structure 180 includes a pipe clamp 181 and a fastener 182. The pipe clamp 181 is disposed on the blanking member 110. Shunt 130 can be adjustably clamped to clamp 181. Fasteners 182 are used to lock shunt 130 to tube clamp 181. Thus, during assembly, shunt 130 is clamped to tube clamp 181; then, adjusting the position and/or the angle of the shunt tube 130, so that the purge hole 131 on the shunt tube 130 is aligned with the gap 112, so as to purge the material 200 in the gap 112 into the blanking channel 111; after adjustment, the shunt 130 is fastened to the tube clamp 181 via the fastener 182 to prevent the shunt 130 from wobbling or misplacing during operation. The fasteners 182 may be bolts, screws, pins, rivets or other components.

Further, referring to fig. 1, the adjusting structure 180 further includes a gasket 183, the gasket 183 is disposed between the fastening member 182 and the pipe clamp 181, the gasket 183 is used to properly adjust the height of the shunt, and it should be noted that the gasket 183 may be replaced by other adjusting mechanisms.

In one embodiment, referring to fig. 2, the sealed gate valve 100 further includes a material guiding member 190. The material guiding member 190 is located on one side, back to the blanking channel 111, of the blanking member 110, and the material guiding member 190 is used for guiding the material 200 falling out of the gap 112 into the blanking channel 111, so that the material guiding member 190 is arranged outside the blanking member 110, the material 200 falling out or flying out of the gap 112 is effectively contained, the material 200 falling out or flying out is effectively recycled into the blanking channel 111, the material 200 is recycled, and waste caused by the material 200 splashing out is prevented.

Further, referring to fig. 2, the material guiding member 190 is provided with a material guiding cavity 191, and a material receiving port 192 and a material guiding port 193 which are respectively communicated with the material guiding cavity 191. The material guide 190 is disposed on the blanking member 110. The receiving port 192 communicates with the slit 112. The material guiding port 193 is communicated with the material dropping channel 111 or is positioned in the material dropping channel 111. Therefore, when the material 200 falls out or flies out of the gap 112, the material 200 falls into the material guiding cavity 191 from the material receiving port 192; and falls from the material guiding opening 193 to the material falling channel 111 again to effectively prevent the material 200 from spilling.

Further, referring to fig. 2, a wall of the material guiding cavity 191 is inclined so that the material 200 slides into the material guiding opening 193 more smoothly.

In one embodiment, referring to fig. 1, the sealed gate valve 100 further includes a mounting plate 132 for mounting the shunt 130.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A sealed gate valve, said sealed gate valve comprising:

the blanking device comprises a blanking piece, wherein a blanking channel is arranged in the blanking piece, a gap communicated with the blanking channel is arranged on the blanking piece, the gap extends along the circumferential direction of the blanking channel, and a first sealing element is arranged on the inner wall of the gap;

a gate plate movable in the gap to block or unblock the blanking channel, the gate plate in sealing engagement with the first seal;

the shunt tubes, the shunt tubes is located blanking spare dorsad one side of blanking passageway, be equipped with the purge hole on the shunt tubes, the purge hole orientation the gap sets up, shunt tubes one end is used for communicating with outside air supply.

2. The sealed-type gate valve according to claim 1, wherein an inner wall of the gap is further provided with a second seal spaced from the first seal, the first seal and the second seal being interposed for insertion of the gate; and/or the presence of a gas in the gas,

the number of the blowing holes is more than two, and the blowing holes are arranged at intervals along the length direction of the flow dividing pipe.

3. The sealed gate valve of claim 1, further comprising an on-off valve for controlling the opening and closing of the shunt tube to the external gas source.

4. The sealed-type gate valve of claim 1, further comprising an actuator having an output shaft drivingly connected to the gate, the actuator being adapted to drive the gate in the gap.

5. The sealed gate valve of claim 4, further comprising a start-stop for controlling the start-stop of the actuator.

6. The sealed gate valve of claim 5, further comprising a controller electrically connected to the start-stop and configured to control an operational state of the start-stop.

7. The sealed-type gate valve according to claim 1, further comprising an adjustment structure, wherein the shunt tube is disposed on the adjustment structure, and the adjustment structure is used for adjusting the position and/or the angle of the shunt tube.

8. The sealed gate valve of claim 7, wherein the adjustment structure includes a tube clamp disposed on the blanking member, the shunt tube being adjustably retained on the tube clamp, and a fastener for locking the shunt tube to the tube clamp.

9. The sealed gate valve according to any one of claims 1 to 8, further comprising a material guiding member located on a side of the blanking member facing away from the blanking channel, the material guiding member being configured to guide material falling out of the gap into the blanking channel.

10. The sealed gate valve according to claim 9, wherein the material guiding member is provided with a material guiding cavity, and a material receiving opening and a material guiding opening respectively communicated with the material guiding cavity, the material guiding member is disposed on the blanking member, the material receiving opening is communicated with the gap, and the material guiding opening is communicated with or located in the blanking channel.

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