Gate valve with locking function

Abstract

The application discloses a gate valve with locking function, which comprises a shell with a first plate and a second plate, both of which are penetrated by a valve port; a driving unit; a sliding seat with multiple sliding top abutting pieces; a valve piece rotatably arranged on the sliding seat by two cranks, which constitute a parallel equal-crank mechanism with the sliding seat and the valve piece; and an elastic element; wherein, when the sliding seat is at the highest position, the two cranks are in an inclined state; when the sliding seat is at the lowest position, the two cranks are in a horizontal state relative to the shell, the multiple sliding top abutting pieces of the sliding seat and the valve piece are rolled against the bottom of the shell, the valve piece is rotated to a position where the valve piece closes the valve port of the second plate, and the multiple sliding top abutting pieces on the sliding seat are also rolled against the inner side surface of the first plate.

Description

TECHNICAL FIELD

[0001] The present application relates to a gate valve, and in particular to a gate valve with locking function. BACKGROUND

[0002] Taiwan Patent No. I551798, US Patent No. 9,464,721, discloses a gate valve with locking function. The gate valve mainly utilizes a driver to drive a swing arm, so as to drive a sliding seat to move, and when the swing arm is displaced to a second locking position, a valve element on the sliding seat closes a valve port, so as to achieve the effect of locking the valve element when closing.

[0003] The aforementioned case utilizes the relationship between the swing arm and the driving sliding groove with nonlinear track to achieve the locking effect when the valve element closes the valve port. However, this structure has its function in the locking effect, but it is not suitable for occasions that require larger closing force. That is, when the valve element needs to close the valve port with larger force, the structure of the aforementioned case is less suitable for use. SUMMARY

[0004] The main purpose of the present application is to provide a gate valve with locking function, which is more suitable for larger closing force requirement than the prior art, and can still maintain stable locking state when closing.

[0005] Based on the above, the present application provides a gate valve with locking function, comprising: a housing, which is flat, has a first plate and a second plate, and has a receiving space between the first plate and the second plate; the first plate and the second plate are located on the front and back sides and are opposite to each other and penetrate a valve port; the housing has a bottom; a drive unit is arranged above the housing and has a drive rod which can be extended into the receiving space and is located between the first plate and the second plate when extended; a sliding seat is arranged on the drive rod and is driven by the drive rod to move between a highest position and a lowest position in the receiving space; the sliding seat has a plurality of sliding top abutting members which protrude from the sliding seat and face the inner side of the first plate; part of the plurality of sliding top abutting members protrude from the bottom of the sliding seat and face the bottom of the housing; a valve member is arranged on the sliding seat by two cranks; the two cranks are substantially the same length and parallel to each other, and constitute a parallel equal crank mechanism with the sliding seat and the valve member; the valve member has a plurality of sliding top abutting members which protrude from the bottom of the valve member and face the bottom of the housing; and an elastic element abuts one end of the sliding seat and the other end of the valve member, and the elastic restoring force makes the valve member move downward relative to the sliding seat; when the sliding seat is at the highest position, the plurality of sliding top abutting members of the sliding seat which face the bottom of the housing do not abut the bottom of the housing, and the plurality of sliding top abutting members of the valve member which face the bottom of the housing do not abut the bottom of the housing; the position of the two cranks arranged on the sliding seat is higher than the position of the two cranks arranged on the valve member, and the two cranks are inclined; when the sliding seat is at the lowest position, the two cranks are horizontal relative to the housing; the plurality of sliding top abutting members of the sliding seat which face the bottom of the housing abut the bottom of the housing, and the plurality of sliding top abutting members of the valve member which face the bottom of the housing abut the bottom of the housing; the valve member is rotated to a position where the valve member closes the valve port of the second plate; the plurality of sliding top abutting members on the sliding seat also abut the inner side of the first plate; the position of the two cranks arranged on the sliding seat is substantially the same as the position of the two cranks arranged on the valve member, and the two cranks are substantially horizontal.

[0006] Therefore, the parallel equal crank mechanism formed by the two cranks and the sliding seat and the valve member can provide greater closing force than the prior art, which is suitable for larger force closing requirements and can still maintain a stable locking state when closing.

[0007] The present application will be described in detail below in conjunction with the drawings and specific embodiments, but is not limited to the present application. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a combined perspective view of the first preferred embodiment of the present application.

[0009] Figure 2 is a partial exploded view of the first preferred embodiment of the present application, showing the first plate and the second plate removed.

[0010] Figure 3 is a partial assembly perspective view of the first preferred embodiment of the present application, showing the valve member in phantom after the first plate and the second plate are removed.

[0011] Figure 4 is another exploded view of the first preferred embodiment of the present application, showing the second plate removed and the valve member flipped over.

[0012] Figure 5 is a cross-sectional view along the section line 5-5 in Figure 1

[0013] Figure 6 is a cross-sectional view along the section line 6-6 in Figure 1

[0014] Figure 7 is an operational schematic view of the first preferred embodiment of the present application.

[0015] Figure 8 is another operational schematic view of the first preferred embodiment of the present application.

[0016] Figure 9 is the same operation as Figure 8 , but with a cross-sectional view at the location of the section line. Figure 6

[0017] Figure 10 is the same operation as Figure 8 , but with a schematic view at the perspective of Figure 3

[0018] Figure 11 is a partial enlarged view of Figure 10

[0019] wherein the reference numeral

[0020] 10: gate valve with locking function

[0021] 11: housing

[0022] 111: bottom

[0023] 112: top block

[0024] 12: first plate

[0025] 121: valve port

[0026] 14: second plate

[0027] 141: valve port

[0028] ​​​​​16: Storage space

[0029] 21: Drive Unit

[0030] 22: Drive lever

[0031] 31: Slide

[0032] 34: Sliding top stop component

[0033] 36: Stabilizer

[0034] 41: Valve

[0035] 42: Crank

[0036] 44: Sliding top stop component

[0037] 46: Abutment Block

[0038] 51: Elastic element Detailed Implementation

[0039] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims.

[0040] like Figures 1 to 6 As shown, a preferred embodiment of the present invention provides a gate valve 10 with a locking function, mainly composed of a housing 11, a drive unit 21, a slide 31, a valve element 41, and an elastic element 51, wherein:

[0041] The housing 11 is flat and has a first plate 12 and a second plate 14. The housing 11 has an accommodating space 16 located between the first plate 12 and the second plate 14. The first plate 12 and the second plate 14 are located on the front and rear sides and are opposite each other through a valve port 121, 141. The housing 11 has a bottom 111. In this embodiment, the bottom 111 of the housing 11 is formed by the first plate 12 and the second plate 14 extending towards each other and connecting.

[0042] The drive unit 21 is disposed above the housing 11. The drive unit 21 has a drive rod 22 that can extend vertically into the accommodating space 16, and is located between the first plate 12 and the second plate 14 during extension and retraction. In this embodiment, the drive unit 21 is composed of multiple air compressor cylinders, and its piston rod serves as the drive rod. The number of air compressor cylinders can be determined according to actual needs; under suitable conditions, even one air compressor cylinder may be sufficient.

[0043] The slide 31 is provided on the driving rod 22 and is driven by the driving rod 22 to move between a highest position and a lowest position in the accommodating space 16. The slide 31 has a plurality of sliding abutting members 34, in this embodiment, rollers, whose wheel surfaces protrude from the slide 31 and face a surface of the inner side of the first plate 12. Some of the sliding abutting members 34 are located at the bottom of the slide 31, and their wheel surfaces protrude from the bottom of the slide 31 and face the bottom 111 of the shell 11. In this embodiment, the left and right sides of the slide 31 each have a stabilizing wheel 36 for rolling against the left and right side walls inside the shell 11, which can provide a stabilizing effect when the slide 31 moves up and down.

[0044] The valve 41 is rotatably provided on the slide 31 by two cranks 42, which are substantially the same length and parallel to each other, and together with the slide 31 and the valve 41 form a parallel equal crank mechanism. The valve 41 has a plurality of sliding abutting members 44, in this embodiment, rollers, located at the bottom of the valve 41, and their wheel surfaces protrude from the bottom of the valve 41 and face the bottom 111 of the shell 11. In this embodiment, the valve 41 is also provided with an abutting block 46.

[0045] The plurality of sliding abutting members 34 of the slide 31 and the plurality of sliding abutting members 44 of the valve 41 in this embodiment are exemplified by rollers, but are not limited to the implementation form of rollers. Other implementation forms such as metal arc-shaped convex surfaces or iron fluoride layers provided on the surface of the arc-shaped convex surfaces can also slide relative to the bottom 111 of the shell 11 or the inner surface of the first plate 12 when abutting.

[0046] The elastic element 51, in this embodiment, is a compression spring, one end of which abuts against the slide 31 and the other end of which abuts against the abutting block 46 of the valve 41. The elastic restoring force of the elastic element 51 causes the valve 41 to move downward relative to the slide 31.

[0047] When the sliding seat 31 is at the highest position, the sliding top abutting pieces 34 of the sliding seat 31 facing the bottom 111 of the shell 11 do not abut against the bottom 111 of the shell 11, the sliding top abutting pieces 44 of the valve piece 41 facing the bottom 111 of the shell 11 do not abut against the bottom 111 of the shell 11, and the positions of the two cranks 42 arranged on the sliding seat 31 are higher than the positions of the two cranks 42 arranged on the valve piece 41, i.e. the two cranks 42 are in an inclined state. When the sliding seat 31 is at the lowest position, the sliding top abutting pieces 34 of the sliding seat 31 facing the bottom 111 of the shell 11 abut against the bottom 111 of the shell 11, the sliding top abutting pieces 44 of the valve piece 41 facing the bottom 111 of the shell 11 abut against the bottom 111 of the shell 11, the valve piece 41 is rotated relative to the sliding seat 31 to a position where the valve piece 41 closes the valve port 141 of the second plate 14, the sliding top abutting pieces 34 on the sliding seat 31 also abut against the inner side of the first plate 12, the positions of the two cranks 42 arranged on the sliding seat 31 are substantially the same as the positions of the two cranks 42 arranged on the valve piece 41, i.e. the two cranks 42 are in a horizontal state relative to the shell 11.

[0048] In actual implementation, a top block 112 is arranged on the bottom 111 of the shell 11 in the accommodating space 16, when the sliding seat 31 is at the lowest position, the sliding top abutting pieces 34 of the sliding seat 31 facing the bottom 111 of the shell 11 abut against the top block 112. The design of the top block 112 can make a height difference between the sliding top abutting pieces 34 of the sliding seat 31 and the sliding top abutting pieces 44 of the valve piece 41 when the sliding seat 31 is at the lowest position, i.e. the sliding top abutting pieces 34 of the sliding seat 31 are higher than the sliding top abutting pieces 44 of the valve piece 41, so that the top block 112 can make the sliding seat 31 not need to move downward to the bottom of the accommodating space 16, and the driving stroke of the driving unit 21 can be reduced.

[0049] The structure of the present application is described above, and the operation state of the present application is described below.

[0050] As shown in Figure 5 , when the sliding seat 31 is at the highest position, the elastic restoring force of the elastic element 51 pushes the valve piece 41 to move downward to the lowest position relative to the sliding seat 31. At this time, the two cranks 42 are inclined downward, based on the characteristics of the parallel equal crank mechanism, the valve piece 41 is closest to the sliding seat 31. At this time, the valve port 121 of the first plate 12 and the valve port 141 of the second plate 14 are in an open state.

[0051] As shown in Figure 7 and Figure 3As shown, during the process of the drive unit 21 driving the slide 31 to descend, the slide 31 can be stabilized by the multiple stabilizing wheels 36 rolling against the inner walls of the left and right sides of the housing 11 (this part of the structure is very easy to understand, and the applicant believes that it does not need to be shown in the diagram). The multiple sliding abutments 44 at the bottom of the valve 41 will first abut against the bottom 111 of the housing 11. At this time, the multiple sliding abutments 34 at the bottom of the slide 31 have not yet abutted against the top block 112 and are separated from the top block 112 by a predetermined distance. The aforementioned multiple stabilizing wheels 36 are actually for use when the invention is in a side-lying position, that is, when the invention is turned ninety degrees and the drive unit 21 is located on one side of the housing 11, the weight of the slide 31 itself may cause the drive rod 22 of the drive unit 21 to bend. Therefore, the multiple stabilizing wheels 36 provide a supporting effect. Therefore, when used upright (i.e., Figure 1 In practice, the multiple stabilizing wheels 36 do not necessarily need to roll against the inner walls on the left and right sides of the housing 11. However, if a rolling relationship occurs, it can provide a stabilizing effect.

[0052] like Figures 8 to 11 As shown, during the process where the drive unit 21 continues to drive the slide 31 down until the multiple sliding abutments 34 at the bottom of the slide 31 abut against the top block 112, the valve member 41, based on the characteristics of the parallel crank mechanism and the relative relationship of the multiple sliding abutments 44 rolling against the bottom 111 of the housing 11, swings toward the second plate 14, and also moves further away from the slide 31 relative to its raised position; that is, the distance between the valve member 41 and the slide 31 increases. When the valve member 41 swings to the point where the two cranks 42 are in a horizontal state, as shown... Figure 8 In the indicated state, the valve 41 closes the valve port 141 of the second plate 14, and the plurality of sliding abutments 34 of the slide block 31 abut against the inner side of the first plate 12. At this time, since the two cranks 42 are in a horizontal state, and the direction of the closing force of the valve 41 is consistent with the long axis direction of the two cranks 42, the force applied to the valve 41 from the outside is parallel to the two cranks 42. Therefore, the force applied to the valve 41 by the valve port 141 cannot change the position of the two cranks 42, thereby generating a great closing force. Moreover, the horizontal state of the two cranks 42 also forms a locking effect. Unless the drive unit 21 drives the slide block 31 to retract upward, the valve 41 is in a locked closed state.

[0053] To release the closed state, simply drive the drive unit 21 to drive the slide 31 upward, which is the reverse of the above actions, causing the valve 41 to disengage from the valve port 141, thus releasing the closed state and returning to normal. Figures 1 to 6 The location.

[0054] As can be seen from the above, the present application can provide greater closing force than the prior art. In addition, the parallel equal-crank mechanism formed by the two cranks 42, the slide 31 and the valve 41 can make the two cranks 42 horizontal when closing, thereby achieving the effect of locking the valve 41.

[0055] Of course, the present application can also have other various embodiments. Those skilled in the art can make various corresponding changes and modifications to the present application without departing from the spirit and essence of the present application, and these corresponding changes and modifications shall all belong to the protection scope of the claims of the present application.

Claims

1. A gate valve having a locking function, characterized by, The utility model relates to a valve drive mechanism, comprising: a housing, which is flat, has a first plate and a second plate, and has a containing space between the first plate and the second plate, the first plate and the second plate are located on the front and back sides and are opposite to each other and penetrate a valve port, and the housing has a bottom; a drive unit, which is arranged on the housing and is located above the housing, has a drive rod that can be telescopically inserted into the containing space, and is located between the first plate and the second plate when telescoping; a sliding seat, which is arranged on the drive rod, is driven by the drive rod to displace between a highest position and a lowest position in the containing space, has a plurality of sliding abutting members that protrude from the sliding seat and face the inner side of the first plate, and has some of the plurality of sliding abutting members that protrude from the bottom of the sliding seat and face the top block of the housing; a valve piece, which is arranged on the sliding seat by two cranks and can swing, the two cranks are substantially the same length and parallel to each other, and constitute a parallel equal crank mechanism with the sliding seat and the valve piece, the valve piece has a plurality of sliding abutting members that protrude from the bottom of the valve piece and face the bottom of the housing; and a resilient element, which is a compression spring, one end of which abuts against the sliding seat and the other end of which abuts against the valve piece, the elastic restoring force of the compression spring moves the valve piece downward relative to the sliding seat, the elastic restoring force of the compression spring is decomposed into an axial component force and a lateral component force in the displacement direction of the valve piece when the valve piece moves laterally, and the lateral component force can push the valve piece to move laterally. When the sliding seat is at the highest position, the plurality of sliding abutting members of the sliding seat that face the top block of the housing do not abut against the top block of the housing, the plurality of sliding abutting members of the valve piece that face the bottom of the housing do not abut against the bottom of the housing, and the positions of the two cranks arranged on the sliding seat are higher than the positions of the two cranks arranged on the valve piece, so that the two cranks are inclined; when the sliding seat is at the lowest position, the two cranks are horizontal relative to the housing, the plurality of sliding abutting members of the sliding seat that face the top block of the housing abut against the top block of the housing, and the plurality of sliding abutting members of the valve piece that face the bottom of the housing abut against the bottom of the housing, so that the height difference between the plurality of sliding abutting members of the sliding seat bottom and the plurality of sliding abutting members of the valve piece bottom is higher, the valve piece swings relative to the sliding seat to a position where the valve piece closes the valve port of the second plate, the plurality of sliding abutting members on the sliding seat also abut against the inner side of the first plate, and the positions of the two cranks arranged on the sliding seat are substantially the same as the positions of the two cranks arranged on the valve piece.

2. The gate valve having a locking function according to claim 1, characterized in that, The drive unit is an air cylinder.

3. The gate valve having a locking function according to claim 1, characterized in that, The drive unit has a plurality of air cylinders.

4. The gate valve having a locking function according to claim 1, characterized in that, The left and right sides of the sliding seat each have a stabilizing wheel that rolls against the left and right side walls inside the housing.

5. The gate valve having a locking function according to claim 1, characterized in that, The valve piece has an abutting block, one end of the resilient element abuts against the abutting block.

6. The gate valve having a locking function according to claim 1, characterized in that, The plurality of sliding abutting members of the sliding seat and the plurality of sliding abutting members of the valve piece are rollers.

Images