TWM626554U - Gate valve using spring force to open and close - Google Patents

Abstract

The gate valve of this creation includes a valve body, a transmission seat, two gate plates and an elastic member. The valve body has a chamber, a positioning plate and two valve ports located between the chamber and the positioning plate. The gates are arranged on two sides of the transmission seat and are connected together by elastic pieces, and the elastic pieces are arranged on the transmission seat and There is an elastic positioning part protruding from the transmission seat. When the transmission seat is in the first position, the gates are located in the chamber and are approached by the elastic force of the elastic piece, so that the valve ports are opened. When the transmission seat is in the first position In the two positions, the gates seal the valve ports and use the elastic positioning portion of the elastic member to abut the positioning plate of the valve body as a buffer for positioning. In this way, the gate valve of this creation utilizes the elastic force of the elastic member to achieve the opening and closing effect, and has the characteristics of smooth operation, simple structure and good adaptability.

Description

Gate valve using spring force to open and close

This creation is related to gate valves, especially a gate valve that uses elastic force to open and close.

CN 107923554 A patent case discloses the vacuum valve when the roller bracket moves from the open position to the middle position, the first plate and the second plate are driven by the roller bracket; when the roller bracket moves from the middle position to the closed position, the first plate and the second plate are driven by the roller bracket. Further movement of the second plate in the direction of movement is blocked, and the first and second expansion rollers move along the concave rim, and in this case the first and second plates are parallel to each other in the direction of expansion Separated, wherein the first plate and the second plate are pressed against the first expansion roller and the second expansion roller by the first spring arm arranged on the first plate and the second spring arm arranged on the second plate.

In the double-sealed gate valve disclosed in the CN 204267768 U patent case, when the sealing gate is closed, the drive shaft continues to push the drive frame, and the rolling bearing is brought from the deeper stop section to the shallower slope section, so that the two The distance between the sealing gates increases, thereby maintaining a tight state between the sealing gate and the valve hole; on the contrary, when the drive shaft moves in the opposite direction, the rolling bearing is brought from the shallower slope section to the deeper stopper. The distance between the two sealing gates is reduced by means of the elastic restoring force of the elastic member, thereby releasing the tight state between the sealing gate and the valve hole.

However, the aforementioned two patent documents also have the problems of unsmooth actuation of the shutter, complicated components and high manufacturing cost. In addition, the aforementioned two patent documents have a fixed sealing strength, which is difficult to correspond to actual needs (eg, different sizes). Adjusts the resilience of the elastic, so it is less adaptable.

The main purpose of this creation is to provide a gate valve that uses elastic force to open and close, which has smooth operation, simple structure, low manufacturing cost, and good adaptability.

In order to achieve the above-mentioned main purpose, the gate valve of the present invention includes a valve body and a gate unit. The valve body has a chamber, a positioning plate and two valve ports, the valve ports communicate with the chamber and are located between the chamber and the positioning plate; the gate unit has a transmission seat, two gates and at least An elastic piece, the transmission seat is arranged in the valve body and can move back and forth between a first position and a second position, the shutters are arranged on two opposite sides of the transmission seat and are connected through the at least one elastic piece Together, the shutters are made close to each other by the elastic force of the at least one elastic piece, the at least one elastic piece is arranged on the transmission base and has an elastic positioning portion protruding from the transmission base, when the transmission base is located in the In the first position, the gate plates and the at least one elastic member are located in the cavity of the valve body, so that the valve ports of the valve body are opened. When the transmission seat is in the second position, the gates The plate seals the valve ports of the valve body, and the elastic positioning portion of the at least one elastic piece abuts against the positioning plate of the valve body for buffer positioning.

It can be seen from the above that the gate valve of this creation can adjust the rebound force of the elastic member according to actual needs, so it has better performance in terms of adaptability; in addition, the gate provided by this creation is relatively smooth in actuation, making the operation easier The efficiency can be improved, and because the components are relatively simple, the purpose of reducing the manufacturing cost can be achieved.

Preferably, the number of the elastic members is one, and the elastic member further has two opposite elastic parts, one end of the elastic parts is connected to the shutters, and the other end of the elastic parts is connected to the elastic positioning part. Thereby, when the transmission plate is located at the first position, the elastic member provides rebound force to the shutters with the elastic parts, and when the transmission plate is located at the second position, the elastic properties of the elastic member The part is propped open by the shutters so as to accumulate the rebound force of the elastic element.

Preferably, each of the elastic parts has a first arm segment and a second arm segment connected to the first arm segment, one end of the first arm segments is connected to the shutters, and two of the second arm segments are The ends are respectively connected to the first arm segments and the elastic positioning portion. In addition, the widths of the first arm segments are greater than the widths of the second arm segments, so that the same elastic portion has different elastic coefficients.

Preferably, two opposite sides of the transmission seat respectively have a transmission convex portion, the second arm section of each elastic portion of the elastic member has an elongated hole adjacent to the elastic positioning portion, the transmission seat The transmission protrusions are displaceably embedded in the elongated holes. Therefore, when the transmission base moves from the first position to the second position, the transmission base drives the elastic member with the transmission protrusion, and then the elastic member drives the shutters.

Preferably, the number of the elastic pieces is at least two, each of the elastic pieces further has two opposite elastic parts, one end of the elastic parts of each elastic piece is connected to the shutters, and the elastic parts of each elastic piece The other end of the elastic part is connected to the elastic positioning part. In addition, the lengths of the elastic parts of one of the elastic parts are greater than the lengths of the elastic parts of the other elastic part, so that the elastic parts of the elastic parts have different elastic coefficients.

Preferably, the two opposite sides of the transmission seat respectively have a transmission convex portion, and one of the elastic members has a long hole adjacent to the elastic positioning portion, and the long holes are sleeved on the transmission seat. Wait for the transmission protrusion. Thereby, when the transmission base moves from the first position to the second position, the transmission base drives the elastic members with the transmission convex portion, and then drives the shutters by the elastic members.

Preferably, the gate unit further has two balls, the balls are arranged on two opposite sides of the transmission seat, each of the gates has a rolling groove toward one side of the transmission seat, and the rolling groove has a first section and a second section adjoining the first section, the depth of the first section is greater than the depth of the second section. Thereby, when the transmission base is moved from the first position to the second position, the balls are brought from the first sections with a deeper depth to the second sections with a shallower depth, so that the balls Push the gates outward to increase the distance between the gates, so that the gates seal the valve ports; conversely, when the transmission seat moves from the second position to the first position, The balls are brought from the second sections with a shallow depth to the first sections with a deeper depth, so that the balls release the pushing force applied to the shutters, and the shutters at this time will Under the resilient force of the elastic element, the sealing relationship with the valve ports is released.

Preferably, the valve body is provided with a fluid pressure cylinder, and the fluid pressure cylinder passes through the chamber with a drive shaft and is connected to the transmission seat for driving the transmission seat between the first position and the second position. move back and forth.

The detailed structure, characteristics, assembly or usage of the gate valve opened and closed by the elastic force provided by this creation will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of creation should be able to understand that these detailed descriptions and the specific embodiments enumerated for implementing the creation are only used to illustrate the creation and are not intended to limit the scope of the patent application of the creation.

The applicant first explains that in the entire specification, including the embodiments described below and the claims of the scope of the patent application, the terms related to the directionality are based on the directions in the drawings. Next, in the embodiments and drawings to be introduced below, the same element numbers represent the same or similar elements or their structural features.

Please refer to FIGS. 1 to 3 , the gate valve 10 of the present invention includes a valve body 20 , a fluid pressure cylinder 30 , and a gate unit 40 .

As shown in FIGS. 1 and 2 , the valve body 20 has a top frame 21 , two side plates 22 , two annular plates 25 , a top plate 26 , a cylinder seat 28 and a positioning plate 29 . The tops of the side plates 22 are assembled with the top frame 21 , so that a hollow chamber 23 is formed between the side plates 22 and the top frame 21 , and the bottom ends of the side plates 22 respectively have a valve port communicating with the chambers 23 . 24; the annular plates 25 are assembled on the outer peripheral surfaces of the side plates 22 and surround the valve ports 24; the top plate 26 is assembled on the top frame 21 with a plurality of screws 262 to close the top of the chamber 23 The center of the top plate 26 has a shaft hole 27 that communicates with the chamber 23; the cylinder block 28 is fixed on the top surface of the top plate 26 and seals the shaft hole 27 of the top plate 26; the positioning plate 29 is connected to the bottom ends of the side plates 22 and The valve ports 24 are adjacent to each other, so that the valve ports 24 are located between the chamber 23 and the positioning plate 29 .

The fluid pressure cylinder 30 may be a pneumatic cylinder or an oil pressure cylinder, which is not limited herein. The fluid pressure cylinder 30 has a cylinder block 32 and a drive shaft 34 . The cylinder block 32 is assembled on the top surface of the cylinder base 28 , and the drive shaft 34 is disposed on the cylinder block 32 in a vertically displaceable manner and protrudes through the shaft hole 27 of the top plate 26 . inside the chamber 23 (as shown in FIG. 6 ).

The gate unit 40 is arranged in the valve body 20 and has a transmission seat 42, two gates 56 and an elastic component 66, as shown in FIG. 3, wherein:

The transmission seat 42 is a rectangular frame. There is a hollow slot 44 in the center of the transmission seat 42, and a plurality of balls 46 are respectively arranged on the front and rear sides of the transmission seat 42 around the hollow slot 44 (the number and position of the balls 46 can be adjusted according to actual needs, which is not limited here. ); the top end of the transmission seat 42 is connected to the bottom end of the drive shaft 34 of the fluid pressure cylinder 30, so that the transmission seat 42 can be driven by the drive shaft 34 to move up and down, and the bottom end of the transmission seat 42 is penetrated by a transmission member 48, Two ends of the transmission member 48 respectively have a transmission protrusion 50 , and the transmission protrusions 50 of the transmission member 48 protrude from the front and rear sides of the transmission base 42 . In addition, the left and right side surfaces of the transmission seat 42 are respectively installed with two guide wheels 52 facing up and down, and a bearing 54 is installed at the four corners of the transmission seat 42 respectively. The guide wheels 52 and the bearings 54 are respectively abutted against the valve body 20 The side plates 22 can increase the stability and smoothness when the transmission base 42 moves up and down by the arrangement of the guide wheels 52 and the bearings 54 .

The two gate plates 56 are located on the front and rear opposite sides of the transmission base 42 . Each gate 56 has a plurality of longitudinally extending rolling grooves 58 on one side of the transmission seat 42 , the rolling grooves 58 accommodate the balls 46 in a one-to-one manner, and each rolling groove 58 has a first section 60 and A second section 62 connected to the bottom end of the first section 60, the depth of the first section 60 is greater than the depth of the second section 62 (as shown in FIG. 4 and FIG. 6 ). It should be added here that the number and position of the rolling grooves 58 can be adjusted according to actual needs, as long as they can be matched with the number and position of the balls 46 .

The elastic assembly 66 has three elastic members 68a, 68b, 68c in this embodiment, and each elastic member 68a, 68b, 68c has two opposite elastic portions 70 and an elastic positioning portion 72, and the elastic positioning portion 72 is integrally connected to these elastic members At the bottom end of the elastic portion 70, the lengths of the elastic portions 70 of the middle elastic member 68b are greater than the lengths of the elastic portions 70 of the left and right elastic members 68a, 68c, so that the elastic portions 70 of the elastic members 68a, 68b, 68c There are different elastic coefficients, and the bottom end of each elastic portion 70 of the middle elastic member 68b has a long hole 74 adjacent to the elastic positioning portion 72 . The elastic component 66 further has two support plates 76, one of which is fixed to the top of one of the elastic parts 70 of the elastic members 68a, 68b, 68c, one of the shutters 56, and the other support plate by four screws 762 76 is fixed to the top of the other elastic portion 70 of the elastic members 68a, 68b, 68c by four screws 764 and four nuts 766, and the heads of the screws 764 are fixed to the four countersunk holes of the other gate 56 64 , whereby the shutters 56 are combined together through the elastic element 66 . In addition, as shown in FIG. 3 and FIG. 4 , the elastic members 68a, 68b, 68c are sleeved on the transmission base 42 from bottom to top, and a part is located in the hollow groove 44, and the elastic positioning portion 72 of the middle elastic member 68b is set. It protrudes below the transmission base 42, and the elongated holes 74 of the middle elastic member 68b are sleeved on the transmission protrusions 50 of the transmission member 48, so that the transmission base 42 can drive the elastic component 66 during the up and down displacement process. , and the gates 56 are driven by the elastic element 66 .

In actual operation, first as shown in FIGS. 1 and 4 , the drive shaft 34 of the fluid pressure cylinder 30 keeps the transmission seat 42 at the first position P1 as shown in FIGS. 4 and 5 . At this time, the gates 56 and the elastic element 66 are both located in the chamber 23, so that the valve ports 24 are in an open state.

When the valve ports 24 are to be closed, the drive shaft 34 of the hydraulic cylinder 30 drives the transmission seat 42 to descend from the first position P1 shown in FIGS. 4 and 5 to the second position shown in FIGS. 6 and 7 . P2, during the descending process, the transmission base 42 drives the shutters 56 to descend synchronously through the elastic component 66, and when the elastic positioning portion 72 of the middle elastic member 68b abuts against the positioning plate 29, a buffer positioning effect is produced to absorb the shutters The impact force exerted by the unit 40 on the valve body 20 is when the gate plates 56 are facing the valve ports 24 .

After the gates 56 are aligned with the valve ports 24, the drive shaft 34 of the fluid pressure cylinder 30 continues to push the transmission seat 42, and the balls 46 will be brought from the deeper first section 60 to the deeper depth. In the shallow second section 62, when the transmission base 42 reaches the second position P2 as shown in FIG. 6 and FIG. 7, the balls 46 and the gates 56 are pushed outward, so that the distance between the gates 56 increases, Then the shutters 56 seal the valve ports 24 (as shown in FIG. 8 ). At this time, the elastic portions 70 of the elastic members 68a, 68b, and 68c will be stretched by the shutters 56, so that The elastic restoring force is accumulated; on the contrary, when the driving shaft 34 of the fluid pressure cylinder 30 is actuated in reverse, the balls 46 will be brought from the second section 62 with a shallow depth to the first section 60 with a deeper depth to release the applied force on the The pushing force of the shutters 56 is equal, and at this time, by means of the elastic restoring force of the elastic parts 70 of the elastic members 68a, 68b, 68c, the shutters 56 are brought close to each other and the distance between each other is reduced, so as to release the The sealing effect between the gates 56 and the valve ports 24 . Until the balls 46 are clamped on the first section 60, the gates 56 can be brought to the first position P1 as shown in FIG. 4 and FIG. 5 by the drive shaft 34 of the fluid pressure cylinder 30, and the valves are opened. Port 24 (shown in Figure 1).

On the other hand, the structure and quantity of the elastic members can be varied according to actual needs. As shown in FIG. 9 and FIG. 10 , in the second embodiment of the present invention, the elastic component 66 has only one elastic member 80 , and the elastic member 80 has two opposite elastic portions 81 and an elastic positioning portion 84 , and each elastic portion 81 has A first arm segment 82 and a second arm segment 83, the top end of the second arm segment 83 is integrally connected to the bottom end of the first arm segment 82, the bottom end of the second arm segment 83 is integrally connected to the elastic positioning portion 84, and The bottom end of the second arm segment 83 has an elongated hole 85 adjacent to the elastic positioning portion 84 . In addition, the width of the first arm segment 82 is greater than the width of the second arm segment 83 , so that the same elastic portion 81 has different elastic coefficients. As shown in FIGS. 9 and 10 , in the second embodiment of the present invention, the elastic component 66 also has two support plates 76 , and one of the support plates 76 is fixed to the first arm section of one of the elastic parts 81 by four screws 762 The top of the 82, one of the shutters 56, and the other support plate 76 are fixed to the top of the first arm section 82 of the other elastic portion 81 by four screws 764 and four nuts 766, and the heads of the screws 764 are fixed to the In the other four countersunk holes 64 of the gate 56 . In this way, the elastic components 66 can combine the shutter plates 56 together, and provide elastic restoring force to the shutter plates 56 by the elastic parts 81 with different elastic coefficients.

To sum up, the gate valve 10 of the present invention can adjust the number of the elastic members 68a, 68b, 68c, 80 according to actual needs (eg, different sizes), and use the structural design of different elastic coefficients, and then adjust the elastic members 68a, 68b accordingly , 68c, 80 provide the rebound force, so the performance is better in terms of adaptability. In addition, the shutter 56 provided by the present invention is relatively smooth in operation, so that the operation efficiency can be improved, and the overall components are relatively simple, so the purpose of reducing the manufacturing cost can be achieved.

10: Gate valve 20: valve body 21: Top frame 22: Side panels 23: Chamber 24: valve port 25: Ring plate 26: Top Plate 262: Screw 27: Shaft hole 28: Cylinder block 29: Positioning plate 30: Fluid pressure cylinder 32: Cylinder block 34: Drive shaft 40: Gate unit 42: Transmission seat 44: Hollow slot 46: Ball 48: Transmission parts 50: Transmission convex part 52: Guide wheel 54: Bearings 56: Gate 58: Rolling groove 60: First paragraph 62: Second paragraph 64: Countersunk hole 66: Elastic components 68a-68c: Elastic 70: Elastic part 72: Elastic positioning part 74: long hole 76: Support plate 762: Screw 764: Screw 766: Nut P1: first position P2: Second position 80: elastic parts 81: Elastic part 82: First arm segment 83: Second arm segment 84: Elastic positioning part 85: long hole

FIG. 1 is a perspective view of the gate valve according to the first embodiment of the invention, wherein the valve port is in an open state. FIG. 2 is a partial exploded perspective view of the gate valve according to the first embodiment of the invention. FIG. 3 is an exploded perspective view of the gate unit provided by the gate valve according to the first embodiment of the invention. 4 is a front partial cross-sectional view of the gate valve according to the first embodiment of the invention, wherein the transmission seat is located in the first position. 5 is a side partial cross-sectional view of the gate valve according to the first embodiment of the invention, wherein the balls are located in the first section of the rolling groove. 6 is a front partial cross-sectional view of the gate valve according to the first embodiment of the invention, wherein the transmission seat is located in the second position. 7 is a side partial cross-sectional view of the gate valve according to the first embodiment of the invention, wherein the balls are located in the second section of the rolling groove. 8 is a perspective view of the gate valve according to the first embodiment of the invention, wherein the valve port is in a sealed state. 9 is an exploded perspective view of the gate unit provided by the gate valve of the second embodiment of the invention. 10 is a front partial cross-sectional view of the gate valve according to the first embodiment of the invention, wherein the transmission seat is located in the first position.

21: Top frame

22: Side panels

23: Chamber

24: valve port

25: Ring plate

26: Top Plate

262: Screw

27: Shaft hole

28: Cylinder block

29: Positioning plate

30: Fluid pressure cylinder

32: Cylinder block

34: Drive shaft

40: Gate unit

Claims (8)

A gate valve, comprising: a valve body having a chamber, a positioning plate and two valve ports, the valve ports are connected to the chamber and are located between the chamber and the positioning plate; and A gate unit has a transmission seat, two gates and at least one elastic piece, the transmission seat is arranged in the valve body and can move back and forth relative to the valve body between a first position and a second position, the etc. The shutters are arranged on two opposite sides of the transmission base and are connected together through the at least one elastic piece, so that the gates are brought close to each other by the elastic force provided by the at least one elastic piece, and the at least one elastic piece is arranged on the transmission The seat has an elastic positioning portion protruding from the transmission seat. When the transmission seat is in the first position, the gate plates and the at least one elastic piece are all located in the cavity of the valve body, so that the valve body is The valve ports are opened, when the transmission seat is at the second position, the gate plates seal the valve ports of the valve body, and the elastic positioning portion of the at least one elastic member abuts the positioning plate of the valve body. The gate valve of claim 1, wherein the shutter unit has the elastic member, the elastic member further has two opposite elastic parts, one end of the elastic parts is connected to the gates, and the other elastic part is connected to the gates. One end is connected to the elastic positioning part. The gate valve of claim 2, wherein each of the elastic parts has a first arm segment and a second arm segment connected to the first arm segment, one end of the first arm segments is connected to the gate plates, the The two ends of the second arm segments are respectively connected to the first arm segments and the elastic positioning portion, and the width of the first arm segments is greater than the width of the second arm segments. The gate valve according to claim 3, wherein two opposite side surfaces of the transmission seat respectively have a transmission convex portion, and the second arm section of each elastic portion of the elastic member has a long bar adjacent to the elastic positioning portion The elongated holes are slidably sleeved on the transmission protrusions. The gate valve of claim 1, wherein the shutter unit has at least two elastic members, each elastic member further has two opposite elastic portions, and one end of the elastic portions of each elastic member is connected to the gates , the other end of the elastic parts of each elastic piece is connected to the elastic positioning part, wherein the length of the elastic parts of one elastic piece is greater than the length of the elastic parts of the other elastic piece. The gate valve as claimed in claim 5, wherein two opposite side surfaces of the transmission seat respectively have a transmission convex portion, wherein each of the elastic portions of the elastic member has an elongated hole adjacent to the elastic positioning portion, the The equal-length holes are slidably sleeved on the transmission protrusions. The gate valve according to any one of claims 1 to 6, wherein the gate unit further has two balls, the balls are disposed on two opposite sides of the transmission seat, and each of the gates faces one side of the transmission seat There is a rolling groove, each of the rolling grooves has a first section and a second section connected to the first section, the depth of each first section is greater than the depth of each second section, when the transmission seat is located in the first section The balls are located in the first section of the rolling grooves, and when the transmission seat is in the second position, the balls are located in the second section of the rolling grooves and the gates are pushed out, so that the The shutters seal the valve ports. The gate valve according to claim 1, further comprising a fluid pressure cylinder, the fluid pressure cylinder is arranged on the valve body, and the fluid pressure cylinder has a drive shaft, the drive shaft penetrates through the chamber and is connected to the transmission seat.

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