Vertical gate valve of split type floating valve plate

Abstract

The utility model relates to the technical field of gate valves, and provides a vertical gate valve of a split type floating valve plate, which comprises a valve body, a first spigot ring, a second spigot ring, a compensation mechanism and a valve plate assembly, the first spigot ring is fixedly arranged on the valve body, and one end of the first spigot ring is provided with a first sealing end face; the second spigot ring is axially and movably arranged on the valve body, one end of the second spigot ring is provided with a second sealing end face, and the compensation mechanism is detachably connected to the other end of the second spigot ring; the valve plate assembly is arranged between the first sealing end face and the second sealing end face. The second spigot ring of the valve plate assembly and the compensation mechanism are arranged in a split mode through the flange, so that maintenance can be achieved in an independent replacement mode after the compensation mechanism is damaged, the use cost and the maintenance cost are reduced, and the compensation mechanism is convenient to disassemble and replace in a detachable connection mode. And closing of the channel is achieved through switching of the through hole inserting plate and the blind hole inserting plate, and therefore the compensation mechanism can be disassembled conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of plug-in valves, in particular to a vertical plug-in valve with a split floating valve plate. Background Art

[0002] The gate valve is the main equipment for cutting off the gas medium and is mainly used in gas pipelines. The compensation mechanism is one of the key components in the gate valve. The opening and closing of the valve is achieved by compressing or stretching the compensation mechanism.

[0003] In the related art, the compensation mechanism and the valve body are usually connected by integral welding, and the compensation mechanism is easily damaged during long-term operation. Once the compensation mechanism is damaged, the related device needs to be replaced as a whole. The replacement procedure is cumbersome, which increases the use cost and maintenance cost of the equipment. Utility Model Content

[0004] The utility model provides a vertical plug-in valve with a split floating valve plate, which is used to solve the defects of the prior art that the compensation mechanism is difficult to disassemble and has high use and maintenance costs.

[0005] The utility model provides a vertical plug-in valve with a split floating valve plate, comprising: a valve body, a first stop ring, a second stop ring, a compensation mechanism and a valve plate assembly; the first stop ring is fixedly arranged on the valve body, and one end of the first stop ring has a first sealing end face; the second stop ring is axially movably arranged on the valve body, and one end of the second stop ring has a second sealing end face, and the second sealing end face is spaced apart from the first sealing end face; the compensation mechanism is arranged on the valve body, and the compensation mechanism is detachably connected to the other end of the second stop ring, and the compensation mechanism is configured to be compressed or stretched when the second stop ring moves axially; the valve plate assembly is arranged between the first sealing end face and the second sealing end face. The valve plate assembly is provided with a through-hole plug plate, a blind-hole plug plate and a lifting drive assembly, wherein the through-hole plug plate is fixedly mounted on the support frame, and a connecting hole is provided in the middle of the through-hole plug plate to open the channel; the blind-hole plug plate is fixedly mounted on the support frame and arranged in parallel with the through-hole plug plate in the vertical direction, and the blind-hole plug plate is used to close the channel; the lifting drive assembly is transmission-connected to the support frame, and the lifting drive assembly is used to drive the support frame to lift and lower, so as to realize the switching between the through-hole plug plate and the blind-hole plug plate.

[0006] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, the through-hole plug-in plate and the blind-hole plug-in plate are both fixedly connected to the support frame via a connecting block, and a reset component is provided around the through-hole plug-in plate and the blind-hole plug-in plate. The reset component is configured to enable the through-hole plug-in plate and the blind-hole plug-in plate to separate from the first sealing end surface and the second sealing end surface during the switching process between the through-hole plug-in plate and the blind-hole plug-in plate.

[0007] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, the reset assembly includes a leaf spring and a valve plate bracket, the leaf spring is arranged on the through hole plug-in plate and the blind hole plug-in plate, and the valve plate bracket is located in the support frame and connected to both ends of the leaf spring.

[0008] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, a crossbeam is provided in the middle of the support frame, and the crossbeam divides the support frame into an upper area and a lower area. The through-hole plug-in plate is provided in the upper area, and the blind-hole plug-in plate is provided in the lower area.

[0009] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, the lifting drive assembly includes a lifting drive unit and a lifting transmission mechanism, the lifting transmission mechanism is connected to the support frame, and the drive unit is configured to drive the lifting transmission mechanism to drive the support frame to lift and lower.

[0010] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, the valve plate assembly also includes a guide plate, which is fixed on the valve body and located on both sides of the support frame; wherein the guide plate is provided with a guide groove, and guide wheels and limiting wheels are provided on the two opposite sides of the support frame, the guide wheels cooperate with the guide groove for lifting and lowering guidance, and the limiting wheels extend into the guide groove for limiting positioning.

[0011] According to the vertical gate valve with split floating valve plate provided by the utility model, the vertical gate valve also includes a support ring, the support ring sleeve is connected to the valve body and arranged outside the second stop ring, and the support ring is gap-matched with the second stop ring.

[0012] According to the vertical gate valve with a split floating valve plate provided by the utility model, the vertical gate valve also includes a clamping mechanism, which includes: a clamping drive part and a transmission rod, and the clamping drive part is arranged on the valve body; one end of the transmission rod is connected to the second stop ring, and the other end of the transmission rod is connected to the clamping drive part through a transmission assembly, and the clamping drive part is configured to drive the transmission rod to rotate, thereby driving the second stop ring to move axially.

[0013] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, there are multiple transmission rods, and the multiple transmission rods are evenly arranged outside the second stop ring. Each transmission rod is provided with a reducer, and a coupling is provided between adjacent reducers, wherein two of the reducers are transmission-connected to the clamping drive part so as to drive the transmission rods to move simultaneously through the clamping drive part.

[0014] According to the vertical plug-in valve with a split floating valve plate provided by the utility model, the compensation mechanism includes a compensator and a limit rod, and flange connecting parts are provided at both ends of the compensator, one of the flange connecting parts is connected to the second stop ring, and the remaining flange connecting part is connected to one end of the limit rod, and the other end of the limit rod is connected to the valve body.

[0015] The utility model provides a vertical plug-in valve with a split floating valve plate. The second stop ring and the compensation mechanism are separately arranged through a flange, so that after the compensation mechanism is damaged, it can be maintained by replacing it separately, which reduces the use cost and maintenance cost. The compensation mechanism is easy to disassemble and replace through a detachable connection. During the replacement process, the channel is closed by switching between the through-hole plug-in plate and the blind-hole plug-in plate, thereby facilitating the disassembly of the compensation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is a three-dimensional structural schematic diagram of a vertical plug-in valve with a split floating valve plate.

[0018] Figure 2 The utility model is a schematic diagram of the forward structure of a vertical plug-in valve with a split floating valve plate.

[0019] Figure 3 The utility model is a schematic side sectional structural diagram of a vertical plug-in valve with a split floating valve plate.

[0020] Figure 4 The utility model is a schematic diagram of the lateral structure of a vertical plug-in valve with a split floating valve plate.

[0021] Figure 5 It is one of the structural schematic diagrams of the valve plate assembly in the vertical plug-in valve of the split floating valve plate provided by the utility model.

[0022] Figure 6 This is the second structural schematic diagram of the valve plate assembly in the vertical plug-in valve of the split floating valve plate provided by the utility model.

[0023] Reference numerals:

[0024] 10. Valve body; 11. Mounting platform; 12. Guardrail; 20. First stop ring; 21. First sealing end face; 30. Second stop ring; 31. Second sealing end face; 40. Compensation mechanism; 41. Compensator; 42. Limit rod; 43. Flange connection; 50. Valve plate assembly; 51. Support frame; 511. Guide wheel; 512. Limit wheel; 52. Lifting drive unit; 53. Reducer; 54. Lifting transmission mechanism; 55. Guide plate; 56. Through hole plug plate; 57. Blind hole plug plate; 58. Reset assembly; 581. Leaf spring; 582. Valve plate bracket; 60. Clamping mechanism; 61. Clamping drive unit; 62. Commutator; 63. Reducer; 64. Coupling; 65. Transmission rod; 70. Support ring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] In the related art, the compensation mechanism is a component with elastic properties, which is used to provide additional sealing force when the valve is closed to cope with the degradation of sealing performance caused by changes in medium pressure or wear of valve components. Usually, the compensation mechanism is fixed to the valve body by welding or other connection methods. Once the compensation mechanism is damaged, the valve needs to be replaced as a whole. The replacement process is complicated, and the equipment use cost and maintenance cost are increased.

[0031] Regarding the problems in related technologies, such as Figure 1-Figure 3As shown, the present embodiment provides a vertical plug-in valve with a split floating valve plate, comprising a valve body 10, a first stop ring 20, a second stop ring 30, a compensation mechanism 40 and a valve plate assembly 50; the first stop ring 20 is fixedly arranged on the valve body 10, and one end of the first stop ring 20 has a first sealing end face 21; the second stop ring 30 is axially movably arranged on the valve body 10, and one end of the second stop ring 30 has a second sealing end face 31, and the second sealing end face 31 is spaced apart from the first sealing end face 21; the compensation mechanism 40 is arranged on the valve body 10, and the compensation mechanism 40 is detachably connected to the other end of the second stop ring 30, and the compensation mechanism 40 is configured to be compressed or stretched when the second stop ring 30 moves axially; the valve plate assembly 50 is arranged between the first sealing end face 21 and the second sealing end face 31, and is sealed and abutted with the first sealing end face 21 and the second sealing end face 31 to form a channel, and the valve plate assembly 50 is used to control the opening or closing of the channel. The compensation mechanism 40 can be maintained by replacing the gate valve after being damaged. In the present embodiment, the compensation mechanism 40 is detachably connected to the second stop ring 30, which facilitates the disassembly of the compensation mechanism 40, making the replacement of the compensation mechanism 40 more convenient and solving the problem of high use and maintenance costs in related technologies.

[0032] The valve body 10 is a vertical frame structure as a whole, and the setting of the frame structure can provide support for various components. The first stop ring 20 and the second stop ring 30 are tubular structures, and the main parts of the first stop ring 20 and the second stop ring 30 are located in the lower area of ​​the valve body 10. Among them, the end of the first stop ring 20 away from the first sealing end face 21 is provided with a flange connection part 43 for communicating with an external pipeline.

[0033] In this embodiment, the first stop ring 20 and the second stop ring 30 are concentrically arranged, and form a passage that can be passed through as a whole under the arrangement of the valve plate assembly 50. That is, the valve plate assembly 50 is sealedly connected with the first sealing end face 21 and the second sealing end face 31, so that the first stop ring 20 and the second stop ring 30 can be connected to form a passage.

[0034] It is understandable that when the compensation mechanism 40 needs to be replaced, the channel needs to be closed before replacement. In this embodiment, the valve plate assembly 50 can open and close the channel. When the compensation mechanism 40 is replaced, the channel is closed by the valve plate assembly 50, thereby achieving replacement of the compensation mechanism 40.

[0035] The valve plate assembly 50 includes a support frame 51, a through-hole plug plate 56, a blind-hole plug plate 57 and a lifting drive assembly. The support frame 51 is slidably arranged in the valve body 10; the through-hole plug plate 56 is fixedly arranged on the support frame 51, and a connecting hole is opened in the middle of the through-hole plug plate 56 to open the channel; the blind-hole plug plate 57 is fixedly arranged on the support frame 51 and arranged in parallel with the through-hole plug plate 56 in the vertical direction, and the blind-hole plug plate 57 is used to close the channel; the lifting drive assembly is connected to the support frame 51 by transmission, and the lifting drive assembly is used to drive the support frame 51 to lift and lower to realize the switching between the through-hole plug plate 56 and the blind-hole plug plate 57. The valve plate assembly 50 needs to keep the channel unobstructed in the normal state for medium transportation, and needs to close the channel in the compensation mechanism 40 and some other conditions to replace the compensation mechanism 40 or perform other operations. In this embodiment, the through-hole plug plate 56 and the blind-hole plug plate 57 are arranged to enable the quick opening and closing of the channel.

[0036] It is understandable that in the normal state, the entire channel is in an open state for medium transportation, and in the unconventional state (such as replacing the compensation mechanism 40), the channel needs to be closed. The lifting drive assembly can drive the lifting operation of the support frame 51, and the through-hole plug plate 56 and the blind hole plug plate 57 are arranged on the support frame 51, so that the lifting drive assembly can drive the through-hole plug plate 56 and the blind hole plug plate 57 to cooperate with the first sealing end face 21 and the second sealing end face 31 for sealing, thereby realizing switching. Specifically, when the channel needs to be opened, the through-hole plug plate 56 is driven by the lifting drive assembly to cooperate with the first sealing end face 21 and the second sealing end face 31 for sealing. Since the through-hole plug plate 56 is provided with a connecting hole, the channel can be connected through the through hole. When the channel needs to be closed, the blind hole plug plate 57 is driven by the lifting assembly to cooperate with the first sealing end face 21 and the second sealing end face 31 for sealing. The blind hole plug plate 57 is a solid plate-like structure as a whole, so the channel is isolated by the blind hole plug plate 57 to achieve channel closure.

[0037] In the above embodiment, the through-hole plug plate 56 and the blind-hole plug plate 57 have the same structural dimensions, so that the through-hole plug plate 56 and the blind-hole plug plate 57 can achieve sealing with the first sealing end face 21 and the second sealing end face 31 at the same position. Specifically, sealing rings are provided on both sides of the through-hole plug plate 56 and both sides of the blind-hole plug plate 57. In a normal state, the sealing rings are squeezed and deformed to cooperate with the corresponding first sealing end face 21 and the second sealing end face 31 to seal, so that the medium in the channel will not leak out.

[0038] In the specific configuration, the main body of the through hole plug plate 56 is an annular structure, and the sealing ring is arranged on both sides of the annular structure. The main body of the blind hole plug plate 57 is a disc-shaped structure, and the sealing ring is arranged near the edge of the disc.

[0039] It can be understood that, in order to ensure the overall sealing of the channel, the valve plate assembly 50 should be tightly fitted against the first sealing end face 21 and the second sealing end face 31, which makes it difficult to switch the through hole plug plate 56 and the blind hole plug plate 57. In this embodiment, the second stop ring 30 is configured to be able to move axially, so that when switching is required, the second stop ring 30 can be moved to make the second sealing end face 31 detach from the valve plate assembly 50, so that the valve plate assembly 50 can be moved up and down, and the channel can be switched between opening and closing.

[0040] In a specific example, both the through-hole plug plate 56 and the blind-hole plug plate 57 are fixedly connected to the support frame 51 through a connecting block, and a reset assembly 58 is provided around the through-hole plug plate 56 and the blind-hole plug plate 57. The reset assembly 58 is configured to make the through-hole plug plate 56 and the blind-hole plug plate 57 separate from the first sealing end face 21 and the second sealing end face 31 during the switching process of the through-hole plug plate 56 and the blind-hole plug plate 57. In order to improve the high sealing performance between the valve plate assembly 50 and the first sealing end face 21 and the second sealing end, a certain axial force is usually applied to the valve plate assembly 50, so that the valve plate assembly 50 can be closely fitted with the first sealing end face 21 and the second sealing end face 31 to improve the sealing performance of the connection. In the process of switching between opening and closing the channel, it is necessary to realize the switching of the through-hole plug plate 56 and the blind-hole plug plate 57. In this embodiment, the setting of the reset assembly 58 can facilitate the separation of the valve plate assembly 50 from the second sealing end face 31, thereby realizing the rapid switching of the two plug plates.

[0041] It can be understood that in the present embodiment, the second stop ring 30 can move axially. When the normal connected state is switched to the closed state, the second stop ring 30 needs to be moved axially to compress the compensation mechanism 40. The compensation mechanism 40 has a component that can be compressed, so that the second sealing end face 31 on the second stop ring 30 is separated from the through hole plug plate 56 or the blind hole plug plate 57. During the separation process, the reset component 58 can be reset and accelerate the separation from the first sealing end face 21 during the reset process.

[0042] like Figure 5As shown, in a specific example, the reset assembly 58 includes a leaf spring 581 and a valve plate bracket 582. The leaf spring 581 is provided on the through hole plug plate 56 and the blind hole plug plate 57. The valve plate bracket 582 is located in the support frame 51 and connected to both ends of the leaf spring 581. The leaf spring 581 is a plate-like structure with a certain curvature. The valve plate bracket 582 is connected to both ends of the leaf spring 581. When the leaf spring 581 is in a compressed state, its bending degree becomes smaller and has a tendency to restore to its original state. Under normal conditions, the leaf spring 581 is in a compressed state. When switching is required, the leaf spring 581 restores to its original state and drives the through hole plug plate 56 and the blind hole plug plate 57 to move, so that the through hole plug plate 56 or the blind hole plug plate 57 can be separated from the first sealing end face 21 and the second sealing end face 31, so that the first sealing end face 21 and the second sealing end face 31 are separated from the sealing ring, so that the valve plate assembly 50 can be quickly separated from the two sealing surfaces (i.e., the first sealing surface and the second sealing surface) on both sides.

[0043] like Figure 2 , 3 As shown, when switching, the second stop ring 30 moves axially to the right, and at this time, the second sealing end face 31 on the second stop ring 30 gradually breaks away from the contact with the through-hole plug plate 56. At the same time, the leaf spring 581 gradually returns to its original state during this process. During the movement of the through-hole plug plate 56 or the blind hole plug plate 57, the through-hole plug plate 56 and the first sealing end face 21 of the blind hole plug plate 57 are separated, so that the support frame 51 can be lifted and moved. When the first sealing end face 21 and the second sealing end face 31 are separated from the through-hole plug plate 56, the lifting drive assembly drives the lifting frame to move upward, so that the blind hole is located in the channel (as shown in FIG. Figure 3 ), when the blind hole plug plate 57 is located in the channel, the second stop ring 30 is driven to move axially to the left, so that the two sealing surfaces are re-fitted and abutted against the valve plate assembly 50 to close the channel. After the channel is closed, the compensation mechanism 40 can be disassembled and replaced. After the replacement is completed, the through hole plug plate 56 can be switched through the above components. It should be understood that the second stop ring 30 can be driven by an automatic drive method, such as the clamping mechanism 60 in the embodiment described later. Of course, the second stop ring 30 can also be driven by an external driving component, such as by setting an external electric push rod or a hydraulic push rod.

[0044] In a specific implementation, a crossbeam is provided in the middle of the support frame 51, which divides the support frame 51 into an upper area and a lower area, the through-hole plug plate 56 is provided in the upper area, and the blind-hole plug plate 57 is provided in the lower area, thereby improving the stability of the overall structure of the support frame 51.

[0045] like Figure 5As shown, the support frame 51 is a rectangular frame structure as a whole, and two cross beams are provided in the middle of the support frame 51, and the two cross beams have a certain gap, the through hole plug plate 56 is fixed in the upper area through the connecting block, and the blind hole plug plate 57 is fixed in the lower area through the connecting block. When switching, the switching is achieved by driving the support frame 51 to move up and down. Of course, in other embodiments, the positions of the through hole plug plate 56 and the blind hole plug plate 57 can be swapped.

[0046] According to an embodiment provided by the utility model, the lifting drive assembly includes a lifting drive unit 52 and a lifting transmission mechanism 54, the lifting transmission mechanism 54 is connected to the support frame 51, and the lifting drive unit 52 is configured to drive the lifting transmission mechanism 54 to drive the lifting operation of the support frame 51. The lifting and lowering of the support frame 51 can be achieved by driving the lifting drive unit 52, thereby achieving the switching operation of the two plug-in plates (i.e., the through-hole plug-in plate 56 and the blind-hole plug-in plate 57). This method has a simple structure and is easy to prepare.

[0047] In the specific setting, the lifting transmission mechanism 54 is a screw transmission mechanism, which specifically includes two screws, and the two screws are rotatably connected to the two sides of the support frame 51. Each screw is connected to a reducer 53, and the reducer 53 is connected to the lifting drive unit 52. The lifting drive unit 52 is configured as a motor or a servo motor. The output end of the lifting drive unit 52 is connected to the input end of the reducer 53, and the output end of the reducer 53 is connected to the screw. The support frame 51 can be lifted and lowered smoothly by means of the screw. The two screws further improve the overall structural reliability and make the transmission replacement stable.

[0048] In a specific application, a mounting platform 11 is provided on the top of the valve body 10, and the mounting platform 11 is used to install the lifting drive unit 52 and the reducer 53, and a guardrail is connected around the mounting platform 11. A connecting seat is fixedly provided on the top of the support frame 51, and shaft holes are respectively opened inside the connecting seat, and a screw nut is provided at the bottom of the connecting seat. Two screws are respectively inserted into the screw nuts through the shaft holes, and the bottom of the screw is rotatably connected to the valve body 10, so that the support frame 51 can be driven to rise and fall when the screw rotates.

[0049] According to the specific implementation mode provided by the utility model, Figure 1 , Figure 5 As shown, the valve plate assembly 50 also includes a guide plate 55, which is fixed on the valve body 10 and located on both sides of the support frame 51; wherein the guide plate 55 is provided with a guide groove, and a guide wheel 511 and a limit wheel 512 are provided on both sides of the support frame 51, the guide wheel 511 cooperates with the guide groove for lifting and guiding, and the limit wheel extends into the guide groove for limiting. The setting of the guide plate 55 can improve the stability of the lifting and lowering of the support frame 51.

[0050] It can be understood that the guide wheels 511 on both sides of the support frame 51 can cooperate with the guide groove to move up and down, and the guide groove plays a guiding role, allowing the guide wheel 511 to slide in the guide groove. The size of the limiting wheel 512 is set to be slightly smaller than the groove width of the guide groove, which prevents the guide frame from shaking when moving up and down, further improving its stability.

[0051] According to an embodiment provided by the utility model, the vertical plug-in valve of the split floating valve plate further includes a support ring 70, which is sleeved and connected to the valve body 10 and arranged outside the second stop ring 30, and the support ring 70 is clearance-matched with the second stop ring 30. The support ring 70 is integrally connected to the valve body 10, and the second stop ring 30 is located inside the support ring 70, which can realize the stable movement of the second stop ring 30 and improve the overall stability.

[0052] In the specific setting, the inner diameter of the support ring 70 is slightly larger than the outer diameter of the second stop ring 30, so that it can be supported and guided by the support ring 70 when moving. At the same time, a guide support wheel is provided at the bottom of the component, thereby making the movement of the second stop ring 30 more stable.

[0053] According to an embodiment provided by the utility model, the vertical plug-in valve of the split floating valve plate also includes a clamping mechanism 60, which includes a clamping drive unit 61 and a transmission rod 65. The clamping drive unit 61 is arranged on the valve body 10; one end of the transmission rod 65 is connected to the second stop ring 30, and the other end of the transmission rod 65 is connected to the clamping drive unit 61 through a transmission assembly. The clamping drive unit 61 is configured to drive the transmission rod 65 to rotate, thereby driving the second stop ring 30 to move axially. The second stop ring 30 needs to be displaced in the axial direction to achieve smooth switching of the valve plate assembly 50. In this embodiment, the transmission rod 65 is driven to rotate by the driving unit, thereby achieving stable movement of the second stop ring 30.

[0054] In the specific configuration, the transmission rod 65 is a screw rod, one end of which is threadedly connected to the second stop ring 30, and the other end of the screw rod is transmission-connected to the clamping drive part 61, so that the clamping drive part 61 can drive the screw rod to rotate, thereby realizing the axial movement of the second stop ring 30.

[0055] In a specific application, there are multiple transmission rods 65, which are evenly arranged outside the second stop ring 30. Each transmission rod 65 is provided with a reducer 63, and a coupling 64 is provided between adjacent reducers to drive the transmission rods 65 to move simultaneously through the clamping drive unit 61. In order to achieve stable movement of the second stop ring 30, in this example, multiple transmission rods 65 are provided and multiple transmission rods 65 are driven simultaneously, so that the second stop ring 30 has the same axial force in all directions, and the second stop ring 30 is stably moved. Figure 2As shown, there are four transmission rods 65 in total. In specific transmission, two transmission rods 65 are connected to the commutator 62 as a group. The two commutators 62 are connected by a coupling 64. One of the commutators 62 is connected to the output end of the clamping drive part 61. This allows the clamping drive part 61 to drive the two commutators 62 to move when it rotates, thereby transmitting the torque to each reducer 63 and rotating the four transmission rods 65 at the same time. Of course, there can also be six transmission rods 65 or other numbers. The number of transmission rods 65 can be freely selected according to design requirements to provide a suitable driving force.

[0056] Continue as Figure 2 As shown, in the specific configuration, four transmission rods 65 are arranged at the four corners of the second stop ring 30, so as to achieve stable driving of the second stop ring 30. It should be noted that this embodiment is exemplified by four transmission rods 65, and should not be understood as limiting the number of transmission rods 65.

[0057] According to an embodiment of the present invention, the compensation mechanism 40 includes a compensator 41 and a limiting rod 42, and flange connection parts 43 are provided at both ends of the compensator 41, one of the flange connection parts 43 is connected to the second stop ring 30, and the remaining flange connection part 43 is connected to one end of the limiting rod 42, and the other end of the limiting rod 42 is connected to the valve body 10. The setting of the limiting rod 42 can prevent the compensator 41 from being pulled under the action of external force, thereby realizing the protection of the compensator 41.

[0058] In the specific setting, one end of the limit rod 42 is connected to the valve body 10, and the other end of the limit rod 42 is provided with two limit wheels 512, and there is a movable area between the two limit wheels 512. The remaining flange of the compensator 41 is connected to the movable area to realize the limitation of the movable area of ​​the compensator 41.

[0059] In a specific example, the compensator 41 is made of a flexible material, and rigid flange connection parts 43 are provided at both ends of the compensator 41 .

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical gate valve with a split floating valve plate, characterized in that: include: Valve body; A first stop ring is fixedly arranged on the valve body, and one end of the first stop ring has a first sealing end surface; A second stop ring is axially movably disposed on the valve body, one end of the second stop ring has a second sealing end face, and the second sealing end face is spaced apart from the first sealing end face; a compensation mechanism, disposed on the valve body, the compensation mechanism being detachably connected to the other end of the second stop ring, the compensation mechanism being configured to be compressed or stretched when the second stop ring moves axially; A valve plate assembly is disposed between the first sealing end surface and the second sealing end surface and is in sealing contact with the first sealing end surface and the second sealing end surface to form a channel. The valve plate assembly includes: A support frame, the support frame is slidably disposed in the valve body; A through-hole plug plate is fixedly mounted on the support frame, and a connecting hole is opened in the middle of the through-hole plug plate to open the channel; A blind hole plug plate, fixedly mounted on the support frame and arranged in parallel with the through hole plug plate in a vertical direction, the blind hole plug plate being used to close the passage; A lifting drive assembly is connected to the support frame in a transmission manner, and is used to drive the support frame to lift and lower to achieve switching between the through-hole plug plate and the blind-hole plug plate.

2. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The through hole plug plate and the blind hole plug plate are both fixedly connected to the support frame through a connecting block, and a reset component is provided around the through hole plug plate and the blind hole plug plate. The reset component is configured to make the through hole plug plate and the blind hole plug plate detach from the first sealing end surface and the second sealing end surface during the switching process between the through hole plug plate and the blind hole plug plate.

3. The vertical gate valve with split floating valve plate according to claim 2, characterized in that: The reset assembly comprises a leaf spring and a valve plate bracket, wherein the leaf spring is arranged on the through hole plug plate and the blind hole plug plate, and the valve plate bracket is located in the support frame and connected to both ends of the leaf spring.

4. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: A crossbeam is provided in the middle of the support frame, and the crossbeam divides the support frame into an upper area and a lower area. The through-hole plug plate is provided in the upper area, and the blind-hole plug plate is provided in the lower area.

5. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The lifting drive assembly includes a lifting drive unit and a lifting transmission mechanism. The lifting transmission mechanism is connected to the support frame. The lifting drive unit is configured to drive the lifting transmission mechanism to drive the support frame to lift and lower.

6. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The valve plate assembly further comprises a guide plate, which is fixed on the valve body and located on both sides of the support frame; The guide plate is provided with a guide groove, and guide wheels and limiting wheels are provided on the two opposite sides of the corresponding support frame. The guide wheels cooperate with the guide groove for lifting and lowering guidance, and the limiting wheels extend into the guide groove for limiting positioning.

7. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The vertical gate valve further comprises a support ring, wherein the support ring sleeve is connected to the valve body and arranged outside the second stop ring, and the support ring and the second stop ring are clearance-matched.

8. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The vertical gate valve also includes a clamping mechanism, which includes: A clamping drive unit, disposed on the valve body; A transmission rod, one end of which is connected to the second stop ring, and the other end of which is connected to the clamping drive part through a transmission assembly, wherein the clamping drive part is configured to drive the transmission rod to rotate, thereby driving the second stop ring to move axially.

9. The vertical gate valve with split floating valve plate according to claim 8, characterized in that: There are multiple transmission rods, which are evenly arranged outside the second stop ring. Each transmission rod is provided with a reducer, and a coupling is provided between adjacent reducers, wherein two reducers are transmission-connected to the clamping drive unit so as to drive the transmission rods to move simultaneously through the clamping drive unit.

10. The vertical gate valve with split floating valve plate according to claim 1, characterized in that: The compensation mechanism includes a compensator and a limit rod. Both ends of the compensator are provided with flange connecting parts, one of the flange connecting parts is connected to the second stop ring, and the remaining flange connecting part is connected to one end of the limit rod. The other end of the limit rod is connected to the valve body.

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