slide gate valve

Abstract

The slide gate valve disclosed herein includes a first valve member, a second valve member, a valve plate, a clamping drive mechanism, and a sliding drive mechanism. The first and second valve members are movably spaced close to / away from each other, forming a valve cavity when connected. The valve plate is movably disposed between the first and second valve members to open / close the valve cavity, and the valve plate can be clamped / released by the closeness / distance of the first and second valve members. The clamping drive mechanism is used to drive the first and second valve members to move closer / away from each other. The sliding drive mechanism includes a sliding plate rotating shaft and a sliding plate transmission assembly. The sliding plate transmission assembly is connected to both the sliding plate rotating shaft and the valve plate, converting the rotational motion of the sliding plate rotating shaft into a moving motion that drives the valve plate in and out of the valve cavity, and the first and / or second valve members are guided to move closer / away by the sliding plate rotating shaft. The sliding plate rotating shaft of the slide gate valve of this disclosure can guide the movement of the valve members, which helps to improve the movement stability when the valve members clamp / release the valve plate.

Description

Technical Field

[0001] This disclosure relates to the field of valve technology, and more particularly to slide gate valves. Background Technology

[0002] In related technologies, in slide gate valves, such as closed slide gate valves, the valve plate's sliding drive mechanism and the movable valve component that clamps and releases the valve plate are often independent of each other and do not affect each other. Furthermore, the sliding stability of the valve component's movement to clamp / release the valve plate is relatively poor and needs improvement. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a slide gate valve whose slide plate rotation axis can guide the movement of the valve component, which is beneficial to improving the movement stability of the valve component when clamping / releasing the valve plate.

[0004] This disclosure provides a gate valve, comprising: a first valve member and a second valve member, movably spaced close to / away from each other, forming a valve cavity when connected; a valve plate movably disposed between the first and second valve members to open / close the valve cavity; wherein the valve plate can be clamped / released by the closeness / distance of the first and second valve members; a clamping drive mechanism for driving the first and second valve members to move closer / away from each other; and a plate drive mechanism, comprising: a plate rotating shaft; and a plate transmission assembly connected to the plate rotating shaft and the valve plate, converting the rotational motion of the plate rotating shaft into a moving motion that drives the valve plate to move in and out of the valve cavity; wherein the first and / or second valve members are guided to move closer / away from each other by the plate rotating shaft.

[0005] According to some embodiments provided in this disclosure, the first valve is fixedly disposed, and the second valve is movable and disposed close to / away from the first valve;

[0006] The second valve is passed through the rotating shaft of the walkway to be guided toward / away from the first valve.

[0007] According to some embodiments provided in this disclosure, it further includes: a sliding guide disposed below the valve plate and slidingly engaged with the lower end of the valve plate upward.

[0008] According to some embodiments provided in this disclosure, one of the sliding guide and the valve plate is provided with a rolling element for rolling contact with the other.

[0009] According to some embodiments provided in this disclosure, the rolling element and / or the sliding guide are provided with limiting portions for restricting longitudinal jitter of the valve plate.

[0010] According to some embodiments provided in this disclosure, the plate drive assembly includes: a plate rotating member fixed to the plate rotating shaft; and a plate moving member fixed to the valve plate and meshing with the plate rotating member to drive the valve plate to move as the plate rotating member rotates.

[0011] According to some embodiments provided in this disclosure, the clamping drive mechanism includes: a plurality of clamping rotary shafts threadedly engaged with a plurality of points in the second valve and / or the first valve to drive the second valve and the first valve to move closer to / away from each other during rotation; a clamping drive member connected to one of the clamping rotary shafts to drive the one of the clamping rotary shafts to rotate; and a rotation drive assembly connected to the plurality of clamping rotary shafts to drive the other clamping rotary shafts to rotate when one of the clamping rotary shafts rotates.

[0012] According to some embodiments provided in this disclosure, the rotation drive assembly includes: a plurality of clamping rotating members, each fixed to a plurality of clamping rotating shafts in a corresponding manner; and a clamping rotating ring, which engages with the plurality of clamping rotating members, so that when one of the clamping rotating members is driven to rotate by the clamping rotating shaft, it drives the other clamping rotating members to rotate, thereby driving the other clamping rotating shafts to rotate.

[0013] According to some embodiments provided in this disclosure, it further includes: a housing, in which the first valve, the second valve, and the valve plate are disposed; and a spacer, which is fixedly fitted inside the first valve and sealed around the clamping rotating shaft.

[0014] According to some embodiments provided in this disclosure, the clamping rotating shaft is threadedly engaged with the first valve member. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the gate valve according to an embodiment of the present disclosure, taken below the first section line.

[0016] Figure 2 This is a front view of a gate valve according to an embodiment of this disclosure.

[0017] Figure 3 This is a cross-sectional view of the gate valve according to an embodiment of the present disclosure, taken below the second section line.

[0018] Figure 4 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0019] Figure label:

[0020] 11. First valve component;

[0021] 12. Second valve component; 121. Threaded position;

[0022] 13. Valve plate;

[0023] 14. Clamping drive mechanism; 141a. First clamping rotating shaft; 141b. Second clamping rotating shaft; 141c. Third clamping rotating shaft; 141d. Fourth clamping rotating shaft; 142a. First clamping rotating component; 142b. Second clamping rotating component; 142c. Third clamping rotating component; 142d. Fourth clamping rotating component; 143. Clamping rotating ring; 144. Clamping drive component;

[0024] 15. Board conveyor drive mechanism; 151. Board conveyor rotation shaft; 152. Board conveyor transmission assembly; 1521. Board conveyor rotating component; 1522. Board conveyor moving component; 153. Board conveyor drive motor;

[0025] 16. Sliding guide; 161. Limiting part; 162. Limiting groove;

[0026] 17. Rolling parts;

[0027] 18. Outer shell;

[0028] 19. Spacer sleeve;

[0029] 21. Third valve component;

[0030] 22. Telescopic valve. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0032] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0033] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0034] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0035] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0036] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0037] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0038] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0039] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0040] In related technologies, in slide gate valves, especially closed slide gate valves, the slide drive mechanism that drives the valve plate and the movable valve component that clamps and releases the valve plate are often independent of each other and do not affect each other. Furthermore, the stability of the valve component's movement, particularly in clamping / releasing the valve plate, is relatively poor and needs improvement.

[0041] In view of this, the present disclosure provides a slide gate valve in which the slide gate drive mechanism can guide the movement of the valve component, which is beneficial to improving the movement stability of the valve component when clamping / releasing the valve plate.

[0042] Figure 1 This is a cross-sectional view of the gate valve according to an embodiment of the present disclosure, taken below the first section line. Figure 2 This is a front view of a slide gate valve according to an embodiment of this disclosure. See also... Figure 1 and Figure 2 The slide gate valve of this disclosure includes a first valve 11, a second valve 12, a valve plate 13, a clamping drive mechanism 14, and a slide drive mechanism 15.

[0043] In this configuration, the first valve element 11 and the second valve element 12 are movably spaced closer to / away from each other, forming a valve cavity when connected. Optionally, the first valve element 11 is fixed, and the second valve element 12 is movably spaced closer to / away from the first valve element 11 to form a valve cavity when the first valve element 11 and the second valve element 12 are connected. It is worth noting that the first valve element 11 is fixed to ensure a stable connection with an external, stationary pipe (e.g., a gas pipe). However, depending on the application scenario, the second valve element 12 can also be fixed, while the first valve element 11 can be movably spaced closer to / away from the second valve element 12, allowing the second valve element 12 and the first valve element 11 to move closer to / away from each other, or both the second valve element 12 and the first valve element 11 can be movable, allowing them to move closer to / away from each other.

[0044] The valve plate 13 is movably disposed between the first valve member 11 and the second valve member 12 to open / close the valve cavity, wherein the valve plate 13 can be clamped / released by the approach / removal of the first valve member 11 and the second valve member 12. In other words, the valve plate 13 is movably disposed between the first valve member 11 and the second valve member 12 in a direction perpendicular to the paper and outward to conduct / isolate the valve cavity. Specifically, the valve plate 13 has blind holes and through holes arranged in a direction perpendicular to the paper, wherein when the through holes move between the first valve member 11 and the second valve member 12, the first valve member 11 and the second valve member 12 communicate to form the valve cavity, and when the blind holes move between the first valve member 11 and the second valve member 12, the first valve member 11 and the second valve member 12 are isolated to isolate the valve cavity.

[0045] The clamping drive mechanism 14 is used to drive the first valve member 11 and the second valve member 12 to move closer to each other or further apart. In other words, when the valve plate 13 needs to be stably maintained in the position of connecting / disconnecting the first valve member 11 and the second valve member 12, the first valve member 11 and the second valve member 12 move closer to each other to cooperate in clamping the valve plate 13, thereby enabling the slide gate valve to maintain a relatively stable disconnection / connection state, achieving stable flow or disconnection of the fluid medium. When the valve plate 13 needs to move to switch the disconnection / connection state of the fluid medium, the first valve member 11 and the second valve member 12 move further apart to release the valve plate 13, thereby making the valve plate 13 movable. Thus, the clamping drive mechanism 14 can clamp / release the valve plate 13 by driving the first valve member 11 and the second valve member 12 to move closer to each other or further apart.

[0046] Optionally, the clamping drive mechanism 14 includes a plurality of clamping rotation shafts, a clamping drive component 144, and a rotation drive assembly.

[0047] The plurality of clamping rotating shafts are threaded into multiple threaded points 121 in the second valve member 12 and / or the first valve member 11, so as to drive the second valve member 12 and / or the first valve member 11 to move closer to / away from each other when the plurality of clamping rotating shafts rotate, thereby clamping / releasing the valve plate 12. The clamping drive member 144 is connected to one of the clamping rotating shafts to drive the one clamping rotating shaft to rotate. The rotation drive assembly is connected to the plurality of clamping rotating shafts so as to be driven to rotate when one of the clamping rotating shafts rotates, thereby driving the other clamping rotating shafts to rotate. Thus, the second valve member 12 and the first valve member 11 perform the clamping / releasing action on the valve plate 12.

[0048] Optionally, the rotation drive assembly includes a plurality of clamping rotating members and a clamping rotating ring 143. The plurality of clamping rotating members are fixed one-to-one with the plurality of clamping rotating shafts. The clamping rotating ring 143 engages with the plurality of clamping rotating members, so that when one of the clamping rotating members is rotated by the clamping rotating shaft, it drives the other clamping rotating members to rotate, thereby driving the other clamping rotating shafts to rotate. Thus, the other plurality of clamping rotating shafts also achieve rotational movement.

[0049] It is understood that multiple clamping rotating shafts and multiple clamping rotating components refer to two or more clamping rotating shafts and clamping rotating components, but the number of clamping rotating shafts and clamping rotating components is not specifically limited and can be adjusted adaptively.

[0050] Figure 3 This is a cross-sectional view of the slide gate valve according to an embodiment of this disclosure, taken below the second section line. (See also...) Figure 2 and Figure 3 When the first valve 11 is fixedly installed and the second valve 12 is movable towards / away from the first valve 11, the plurality of clamping rotating shafts include a first clamping rotating shaft 141a, a second clamping rotating shaft 141b, a third clamping rotating shaft 141c, and a fourth clamping rotating shaft 141d. The first clamping rotating shaft 141a, the second clamping rotating shaft 141b, the third clamping rotating shaft 141c, and the fourth clamping rotating shaft 141d are correspondingly threaded into the four threaded points 121 of the second valve 12. Therefore, when the plurality of clamping rotating shafts rotate, the second valve 12 tends to rotate along the axial direction of the clamping rotating shafts. Since there are multiple clamping rotating shafts, the rotation of the second valve 12 is restricted, thus allowing the second valve 12 to move only along the axial direction of the plurality of clamping rotating shafts, thereby moving towards / away from the first valve 11.

[0051] The plurality of clamping rotating components include a first clamping rotating component 142a, a second clamping rotating component 142b, a third clamping rotating component 142c, and a fourth clamping rotating component 142d. The first clamping rotating component 142a, the second clamping rotating component 142b, the third clamping rotating component 142c, and the fourth clamping rotating component 142d are fixed to the first clamping rotating shaft 141a, the second clamping rotating shaft 141b, the third clamping rotating shaft 141c, and the fourth clamping rotating shaft 141d in a one-to-one correspondence. Therefore, when the first clamping rotating shaft 141a is driven to rotate, the first clamping rotating shaft 141a drives the first clamping rotating member 142a to rotate, the first clamping rotating member 142a rotates, the clamping rotating ring 143 rotates, and the clamping rotating ring 143 rotates, causing the second clamping rotating member 142b, the third clamping rotating member 142c, and the fourth clamping rotating member 142d to rotate accordingly, thereby driving the second clamping rotating shaft 141b, the third clamping rotating shaft 141c, and the fourth clamping rotating shaft 141d to rotate accordingly, so that all of the clamping rotating shafts are driven to rotate.

[0052] Specifically, each of the clamping rotating components is implemented as a gear. The clamping rotating ring 143 is implemented as a rotatable gear ring, which is disposed between and meshes with each of the gears. The clamping drive component 144 is implemented as a clamping drive motor. When the clamping drive motor drives one of the clamping rotating shafts to rotate, the gear connected to that clamping rotating shaft is driven to rotate, thereby driving the gear ring to rotate, which in turn causes the other gears to rotate, and thus the rotation of the other clamping rotating shafts is driven by the rotation of the other gears. Thus, all of the clamping rotating shafts are driven to rotate.

[0053] Optionally, when the first valve component 11 is fixed, the clamping rotating shaft is also threadedly engaged with the first valve component 11. This results in better and more stable connection stability for the clamping rotating shaft.

[0054] See Figure 1The plate drive mechanism 15, used to drive the valve plate 13 to move, includes a plate rotating shaft 151 and a plate transmission assembly 152. The plate transmission assembly 152 is connected to the plate rotating shaft 151 and the valve plate 13, converting the rotational motion of the plate rotating shaft 151 into a moving motion that propels the valve plate 13 in and out of the valve cavity. The first valve member 11 and / or the second valve member 12 are guided towards / away from the plate rotating shaft 151. In other words, when the plate rotating shaft 151 is driven to rotate, the plate transmission assembly 152 uses the rotational motion output by the plate rotating shaft 151 as power to move the valve plate 13 in and out of the valve cavity, thereby driving the valve plate 13 to move. Furthermore, since the first valve 11 and / or the second valve 12 are passed through the plate rotating shaft 151, when the plate rotating shaft 151 and the valve plate 13 remain stationary, the movement of the first valve 11 and / or the second valve 12 in releasing / clamping the valve plate 13 will proceed along the extension direction of the plate rotating shaft 151 and will be guided by the plate rotating shaft 151, thereby making the movement stability of the first valve 11 and / or the second valve 12 in releasing / clamping the valve plate 13 high.

[0055] For example, when the first valve 11 is fixedly installed, and the second valve 12 moves closer to / away from the first valve 11 to clamp / release the valve plate 13, the movement of the second valve 12 can be guided by the rotating shaft 151 of the walk plate, resulting in high movement stability.

[0056] Optionally, the plate-moving transmission assembly 152 includes a plate-moving rotating component 1521 and a plate-moving component 1522. The plate-moving rotating component 1521 is fixed to the plate-moving rotating shaft 151. The plate-moving component 1522 is fixed to the valve plate 13 and meshes with the plate-moving rotating component 1521 to drive the valve plate 13 to move as the plate-moving rotating component 1521 rotates. Thus, the valve plate 13 achieves a moving action.

[0057] Specifically, the plate-moving component 1521 can be implemented as a sprocket, and the plate-moving component 1522 can be implemented as a chain meshing with the sprocket. Thus, when the sprocket rotates, it drives the chain to move, and the chain movement drives the valve plate 13 to move. Alternatively, the plate-moving component 1521 can be implemented as a gear, and the plate-moving component 1522 can be implemented as a rack meshing with the gear. Thus, when the gear rotates, it drives the rack to move, and the rack movement drives the valve plate 13 to move.

[0058] Optionally, the board drive mechanism 15 further includes a board drive motor 153. The board drive motor 153 is connected to the board rotation shaft 151 and is used to drive the board rotation shaft 151 to rotate.

[0059] Figure 4 yes Figure 1 For an enlarged diagram of part A, see 1 and Figure 4 The slide gate valve further includes a sliding guide 16. The sliding guide 16 is fixedly disposed below the valve plate 13 and slides upwards in cooperation with the lower end of the valve plate 13. Therefore, when the valve plate 13 moves in and out of the valve cavity, the sliding guide 16 can support the valve plate 13 and guide its sliding. This prevents the valve plate 13 from falling downwards during sliding in and out, thus ensuring the sliding stability and reliability of the valve plate 13.

[0060] Optionally, one of the sliding guide 16 and the valve plate 13 is provided with a rolling element 17 for rolling contact with the other. For example, the top of the sliding guide 16 is provided with a rolling element 17 for rolling contact with the valve plate 13, or the bottom of the valve plate 13 is provided with a rolling element 17 for rolling contact with the sliding guide 16. Thus, when the valve plate 13 is guided by the sliding guide 16 to slide along the extending direction of the sliding guide 16, rolling friction occurs between the valve plate 13 and the sliding guide 16. The frictional force is small, and the sliding guide 16 and the valve plate 13 are unlikely to be damaged by friction.

[0061] Optionally, there are multiple rolling elements 17, which are spaced apart along the extending direction of the sliding guide 16. It is understood that the number of rolling elements 17 can be adjusted according to actual needs. Specifically, each rolling element 17 is rotatably disposed on the sliding guide 16 about a longitudinal axis L, thereby rolling. Furthermore, each rolling element 17 is implemented as a cylinder with no sharp edges on its outer circumference, which helps to reduce friction.

[0062] Optionally, the rolling element 17 and / or the sliding guide 16 are provided with limiting portions 161 for restricting the longitudinal jitter of the valve plate 13. That is, the rolling element 17 is provided with at least one limiting portion 161 for restricting the longitudinal jitter of the valve plate 13. And / or, the sliding guide 16 is provided with at least one limiting portion 161 for restricting the longitudinal jitter of the valve plate 13. Thus, when the valve plate 13 slides under the guidance of the sliding guide 16, the limiting portion 161 can restrict the longitudinal jitter of the valve plate 13, thereby helping to ensure the sliding stability of the valve plate 13 and helping to prevent the longitudinal jitter of the valve plate 13 from deviating from the sliding guide 16.

[0063] Specifically, the sliding guide 16 is provided with limiting parts 161 on both sides of the sliding guide 16. The two limiting parts 161 cooperate with the rolling member 17 to form a limiting groove 162 that is adapted to the thickness of the valve plate 13, so as to limit the longitudinal shaking of the valve plate 13 when sliding.

[0064] Optionally, see Figure 3 The slide gate valve further includes a housing 18 and a spacer 19. The first valve member 11, the second valve member 12, and the valve plate 13 are disposed within the housing 18. That is, the slide gate valve is a closed slide gate valve, with each component arranged within the closed housing 18. The spacer 19 is fixedly fitted inside the first valve member 11 and sealed outside the clamping rotating shaft (141a). Therefore, when the slide gate valve is used in a gas transmission pipeline, such as a gas pipeline, when gas flows from the second valve member 12 to the first valve member 11, the gas entering the housing during the movement of the valve plate 13 will not escape through the spacer 19. Furthermore, the spacer 19 helps to improve the support for the clamping rotating shaft (141a), improving the connection strength and stability of the clamping rotating shaft (141a). Of course, it is understood that the slide gate valve protected by this disclosure is not limited to this, and the slide gate valve can also be an open slide gate valve.

[0065] Optionally, see Figure 3 The slide gate valve further includes a third valve element 21 and a telescopic valve element 22. The third valve element 21 is fixedly disposed and located on opposite sides of the second valve element 12, opposite to the first valve element 11. Specifically, when the slide gate valve is in operation, the first valve element 11 and the third valve element 21 are respectively connected to an externally fixed first pipe and a second pipe, thereby isolating / connecting the external first pipe and the second pipe. The telescopic valve element 22 is connected to both the third valve element 21 and the second valve element 12, and extends or retracts when the second valve element 12 moves to compensate for the displacement of the second valve element 12, so that the third valve element 21 remains stationary when the second valve element 12 moves. Specifically, the telescopic valve element 22 can be implemented as a corrugated telescopic tube, correspondingly extending or retracting when the second valve element 12 moves.

[0066] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A slide gate valve, characterized in that, include: The first valve and the second valve are movably spaced close to / away from each other and form a valve chamber when connected. A valve plate is movably disposed between a first valve and a second valve to open / close the valve chamber; wherein the valve plate can be clamped / released by the approach / remove of the first and second valves; A clamping drive mechanism is used to drive the first valve and the second valve closer together or further apart; and The plate drive mechanism includes: a plate rotating shaft; and a plate transmission assembly connected to the plate rotating shaft and the valve plate, which converts the rotational motion of the plate rotating shaft into the movement of the valve plate in and out of the valve cavity. The first valve and / or the second valve are guided toward / away from the rotating shaft of the walkway.

2. The slide gate valve according to claim 1, characterized in that, The first valve is fixedly installed, while the second valve is movable and installed closer to or further away from the first valve. The second valve is passed through the rotating shaft of the walkway to be guided toward / away from the first valve.

3. The slide gate valve according to claim 1, characterized in that, Also includes: A sliding guide is located below the valve plate and slides upwards in cooperation with the lower end of the valve plate.

4. The slide gate valve according to claim 3, characterized in that, One of the sliding guide and the valve plate is provided with a rolling element for rolling contact with the other.

5. The slide gate valve according to claim 4, characterized in that, The rolling element and / or the sliding guide are provided with a limiting portion to restrict the longitudinal jitter of the valve plate.

6. The slide gate valve according to claim 1, characterized in that, The conveyor belt assembly includes: A rotating component for the conveyor plate is fixed to the rotating shaft of the conveyor plate; The sliding plate moving component is fixed to the valve plate and meshes with the sliding plate rotating component so as to drive the valve plate to move as the sliding plate rotating component rotates.

7. The slide gate valve according to claim 1, characterized in that, The clamping drive mechanism includes: Multiple clamping rotating shafts are threaded into multiple points in the second valve and / or the first valve to drive the second valve and the first valve to move closer to / away from each other during rotation; A clamping drive member is connected to one of the clamping rotary shafts to drive one of the clamping rotary shafts to rotate; and A rotation drive assembly is connected to a plurality of said clamping rotation shafts to drive the other said clamping rotation shafts to rotate when one of said clamping rotation shafts rotates.

8. The slide gate valve according to claim 7, characterized in that, The rotation drive component includes: Multiple clamping rotating components are fixed to multiple clamping rotating shafts in a corresponding manner; and The clamping rotating ring engages with a plurality of clamping rotating members so that when one of the clamping rotating members is rotated by the clamping rotating shaft, it drives the other clamping rotating members to rotate, thereby driving the other clamping rotating shafts to rotate.

9. The slide gate valve according to claim 7, characterized in that, Also includes: The housing, the first valve, the second valve and the valve plate are disposed inside the housing; The spacer is fixedly fitted inside the first valve and sealed outside the clamping rotating shaft.

10. The slide gate valve according to claim 7, characterized in that, The clamping rotating shaft is threadedly engaged with the first valve.

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