An electric gear blind plate valve

Abstract

This utility model belongs to the field of valve technology, specifically referring to an electric gear blind valve; it includes a valve body and a valve plate with a through hole on its outer edge, and at least a locking mechanism. The locking mechanism includes: a support base disposed on the valve body; two clamping plates disposed opposite each other on the support base, forming a compression space between the two clamping plates; a locking rod that passes through the through hole and the two clamping plates when the valve plate rotates to the working position, with a limiting head at one end and a threaded section at the other end; a locking nut that engages with the threaded section; and an elastic pressing member sleeved on the portion of the locking rod located in the compression space, with its two ends abutting against the two clamping plates respectively. Tightening the locking nut drives the clamping plates to compress the elastic pressing member, and the combined action of the limiting head and the locking nut presses and positions the valve plate. This design improves the stability of the electric gear blind valve in the preset working position.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically refers to an electric gear blind valve. Background Technology

[0002] Blind plate valves are key valve devices used in industrial pipeline systems to cut off or open media. They are widely used in gas and liquid transmission pipelines in chemical, metallurgical, and power industries. By rotating the valve plate, the position of the blind plate and the through plate is switched to close or open the valve body channel, ensuring the control of media transmission and the safety of equipment maintenance in the pipeline system.

[0003] However, in commonly used electric gear blind valves, the valve plate is rotated by an electric gear and its position is maintained solely by gear meshing self-locking or a simple limit pin. Under actual pipeline pressure fluctuations or long-term vibration environments, the valve plate is prone to slight displacement, leading to incomplete sealing or misalignment of the on / off position. Furthermore, the valve plate lacks independent mechanical locking devices in different operating positions, making accurate and stable bidirectional positioning impossible and affecting the safety and reliability of the valve in critical pipelines. Utility Model Content

[0004] This invention solves the problems mentioned in the background art by setting a locking mechanism on the valve body, which includes a support seat, a clamping plate, a locking rod, a locking nut, and an elastic pressing component. Tightening the locking nut drives the clamping plate to compress the elastic pressing component, and the valve plate rotated to the working position is pressed and positioned by the combined action of the limiting head and the locking nut.

[0005] The purpose of this utility model is achieved as follows: an electric gear blind valve includes a valve body and a valve plate with a through hole on its outer edge, and further includes at least a locking mechanism, the locking mechanism comprising:

[0006] A support base is provided on the valve body;

[0007] Two clamping plates are disposed opposite to each other on the support base, and a compression space is formed between the two clamping plates;

[0008] A locking rod passes through the through hole and the two clamping plates when the valve plate is rotated to the working position. One end of the locking rod is provided with a limiting head, and the other end is provided with a threaded section.

[0009] The locking nut mates with the threaded section.

[0010] An elastic pressing member is sleeved on the portion of the locking rod located in the compression space, with its two ends abutting against the two clamping plates respectively;

[0011] Tightening the locking nut can drive the clamping plate to compress the elastic pressure member, and the valve plate is pressed and positioned by the combined action of the limiting head and the locking nut.

[0012] The present invention is further configured such that the elastic pressing member is a helical spring.

[0013] The present invention is further configured such that the working position of the valve plate includes:

[0014] In the first working position, the blind flange closes the valve body passage;

[0015] In the second working position, the through plate is aligned with the valve body channel.

[0016] The present invention is further configured such that the locking mechanism is configured in two sets, the first set of locking mechanism corresponds to the first working position of the valve plate, and the second set of locking mechanism corresponds to the second working position of the valve plate.

[0017] The present invention is further configured such that the limiting head is a polygonal prism, and the surface of the valve plate is provided with a limiting groove that cooperates with the limiting head.

[0018] The present invention is further configured such that the clamping plate is fixed to the support base by a vertical plate.

[0019] The present invention is further configured such that the upright plate is mounted on a gear mounting seat of an electric gear that drives the valve plate to rotate.

[0020] By adopting the above technical solution, the beneficial effects that this utility model can achieve are:

[0021] 1. By using the locking rod and locking nut of the locking mechanism in conjunction with the elastic pressing component, tightening the nut drives the clamping plate to compress the elastic pressing component, which, combined with the limiting effect of the limiting head, presses the valve plate, thereby improving the positioning stability of the valve plate in the working position.

[0022] 2. By configuring two sets of locking mechanisms corresponding to the two working positions of the valve plate respectively, the positioning requirements of different on / off states are adapted to improve the adaptability of the blind valve to different working scenarios.

[0023] 3. By fixing the clamp plate to the support base via the upright plate and integrating the upright plate into the gear mounting base of the electric gear, the layout of the locking mechanism and the drive mechanism is optimized, improving the compactness and coordination of the overall structure of the blind valve. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the first position of this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the second position of this utility model;

[0027] Figure 4 This is a cross-sectional structural diagram of the locking mechanism of this utility model.

[0028] The attached figures are labeled as follows: 1. Valve body; 2. Valve plate; 3. Through hole; 4. Locking mechanism; 40. Support base; 41. Clamping plate; 42. Locking rod; 420. Limiting head; 421. Threaded section; 43. Locking nut; 44. Elastic pressing element; 5. Compression space; 6. First working position; 7. Second working position; 8. Blind plate; 9. Through plate; 10. Valve body channel; 11. Limiting groove; 12. Vertical plate; 13. Gear mounting base. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0030] Example 1:

[0031] This embodiment provides an electric gear blind valve, including a valve body 1 and a valve plate 2 with a through hole 3 on its outer edge, and at least a locking mechanism 4, the locking mechanism 4 including:

[0032] Support base 40 is disposed on the valve body 1;

[0033] Two clamping plates 41 are disposed opposite to each other on the support base 40, and a compression space 5 is formed between the two clamping plates 41;

[0034] The locking rod 42 passes through the through hole 3 and the two clamping plates 41 when the valve plate 2 is rotated to the working position. One end of the locking rod 42 is provided with a limiting head 420, and the other end is provided with a threaded section 421.

[0035] The locking nut 43 engages with the threaded section 421.

[0036] The elastic pressing member 44 is sleeved on the part of the locking rod 42 located in the compression space 5, and its two ends abut against the two clamping plates 41 respectively;

[0037] Tightening the locking nut 43 can drive the clamping plate 41 to compress the elastic pressing member 44, and the valve plate 2 is pressed and positioned by the combined action of the limiting head 420 and the locking nut 43.

[0038] The locking mechanism 4 is used to mechanically clamp and fix the valve plate 2 after it has been rotated to the working position, preventing the valve plate 2 from shifting or deflecting. Its structure consists of a support base 40, two clamping plates 41, a locking rod 42, a locking nut 43, and an elastic pressing member 44. It is installed on the valve body 1 and corresponds to the working position of the valve plate 2. The components are matched by fitting, sleeve, threaded connection, etc., to provide reliable positioning constraint for the valve plate 2.

[0039] The through hole 3 on the outer edge of the valve plate 2 is a smooth hole, with a diameter slightly larger than the diameter of the locking rod 42, facilitating the insertion and alignment of the locking rod. During installation, first rotate the valve plate to the preset working position, aligning the through hole 3 with the corresponding holes on the two clamping plates 41. Then, pass the locking rod sequentially through the outer clamping plate, the through hole of the valve plate, and the inner clamping plate. The position of the support base 40 can be pre-calibrated using adjusting bolts or welding to ensure that the locking rod is perpendicular to the valve plate plane when inserted, avoiding assembly interference.

[0040] The support base 40 provides an installation carrier for the two clamping plates 41 and maintains the relative position of the clamping plates 41. Its structure is block-shaped or frame-shaped, adapted to the installation requirements of the clamping plates 41, and fixedly installed on the corresponding position on the outside or inside of the valve body 1. It is connected to the valve body 1 by welding or bolt fastening, providing a stable installation reference for the clamping plates 41.

[0041] Driven by the locking nut 43, the clamping plates 41 move closer to each other, compressing the elastic pressing member 44 and cooperating with the locking rod 42 to clamp the valve plate 2. Its structure is plate-like, with two clamping plates 41 positioned opposite each other on the support base 40, forming a compression space 5 between them to accommodate the elastic pressing member 44. The shape is adapted to the requirement that the locking rod 42 passes through and abuts against the elastic pressing member 44. It is fixedly connected to the support base 40 and can move axially along the locking rod 42 under the action of the locking nut 43.

[0042] The locking rod 42 passes through the through hole 3 of the valve plate 2 and the two clamping plates 41, serving as a carrier for applying force to the locking nut 43. It works in conjunction with the limiting head 420 and the locking nut 43 to press the valve plate 2. Its structure is a long rod with a limiting head 420 at one end and a threaded section 421 at the other end. An elastic pressing member 44 can be sleeved in the middle of the rod. The cylindrical shape is adapted to fit the through hole 3 and the clamping plates 41. When the valve plate 2 rotates to the working position, it passes through the corresponding through hole 3 and clamping plate 41, providing rigid support for the entire locking action.

[0043] The limiting head 420 is used to restrict the movement of the locking rod 42 towards the clamping plate 41, and cooperates with the locking nut 43 to form a clamping force on the valve plate 2 and the clamping plate 41. Its structure is a block structure, larger than the rod body of the locking rod 42 and larger than the through hole 3 of the valve plate 2. Its shape can be adapted to the anti-rotation design. It is fixedly set at one end of the locking rod 42, and is integrally formed or welded to the locking rod 42. Its material is the same as that of the locking rod 42. When the locking nut 43 is tightened, it abuts against the surface of the outer clamping plate 41 or the valve plate 2 to form a reverse limiting.

[0044] The threaded section 421 is the threaded structure at the end of the locking rod 42. Its function is to cooperate with the locking nut 43 to convert the rotational torque into axial clamping force, driving the clamping plate 41 to move and compress the elastic pressing member 44. Its structure is a section with external threads machined at the end of the locking rod 42, the shape of which is adapted to the thread profile of the locking nut 43. It is located at the end of the locking rod 42 away from the limiting head 420, and is integrally formed with the locking rod 42. The locking force is transmitted through thread engagement, providing power for the clamping action of the locking mechanism 4.

[0045] The locking nut 43 engages with the threaded section 421 of the locking rod 42. By rotating and tightening, it generates axial force, driving the clamping plate 41 to compress the elastic pressing member 44. The locking nut 43 is constructed as a nut with internal threads, its shape adapted for manual or tool-operated operation. It is fitted onto the threaded section 421 of the locking rod 42 and threadedly connected to it. During rotation, it can move axially along the locking rod 42, pushing the clamping plate 41 closer to and pressing the elastic pressing member 44.

[0046] The elastic pressing member 44 undergoes elastic deformation under the pressure of the clamping plate 41, using reverse elastic force to enhance the pressing effect on the valve plate 2, while buffering the impact of equipment vibration. Its structure is a component with elastic deformation capability, sleeved on the part of the locking rod 42 located in the compression space 5, with both ends abutting against the two clamping plates 41 respectively. Its shape is adapted to the size of the compression space 5, and the pressing force of the locking mechanism 4 is maintained by elastic rebound.

[0047] When the electric gear blind valve is working, the valve plate 2 is first rotated to the preset working position by the electric gear, that is, the blind plate 8 closes the valve body 1 channel or the through plate 9 is aligned with the valve body 1 channel. At this time, the through hole 3 on the outer edge of the valve plate 2 is aligned with the through path of the locking rod 42 of the locking mechanism 4. The locking rod 42 is passed through the outer clamping plate 41, the through hole 3 of the valve plate 2 and the inner clamping plate 41 in sequence, so that the limiting head 420 of the locking rod 42 abuts against the surface of the outer clamping plate 41 or the valve plate 2. Then, the locking nut 43 is screwed on the threaded section 421 of the locking rod 42 and gradually tightened. During the tightening process, the locking nut 43 moves along the axial direction of the locking rod 42 and pushes the outer clamping plate 41 closer to the inner clamping plate 41. The two clamping plates 41 squeeze the elastic pressing member 44 sleeved on the locking rod 42, so that it generates elastic deformation in the compression space 5. When the elastic pressing member 44 is compressed, it generates a reverse elastic force. Combined with the clamping action of the limiting head 420 and the locking nut 43 at both ends of the locking rod 42, the valve plate 2 is tightly pressed into the preset working position, so as to achieve a stable lock of the valve plate 2. When it is necessary to unlock, the locking nut 43 is loosened in the opposite direction. The rebound thrust of the elastic pressing member 44 causes the clamping plate 41 to reset. After the locking rod 42 is pulled out, the valve plate 2 can be rotated to switch positions by the electric gear.

[0048] Example 2:

[0049] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] Furthermore, the elastic pressing member 44 is a helical spring.

[0051] By adopting the above technical solution, a helical spring is selected as the elastic pressing component 44. The helical spring is sleeved in the compression space 5 between the two clamping plates 41 on the locking rod 42. Its two ends abut against the two clamping plates 41 respectively. The structural characteristics of the helical spring enable it to produce uniform and stable elastic deformation under the compression of the clamping plates 41. The released reverse elastic force can continue to act on the clamping plates 41. Combined with the clamping action of the limiting head 420 and the locking nut 43, the pressing effect on the valve plate 2 is enhanced. At the same time, the helical spring has good elastic recovery ability, which can buffer the impact of equipment vibration and medium pressure fluctuation, and maintain the stability of the locking mechanism 4 pressing the valve plate 2.

[0052] It should be noted that the elastic pressing element 44 is not limited to a helical spring, but can also be a disc spring assembly, a rubber elastomer or a polyurethane buffer pad, or other elements with compressive elasticity and recovery. Their common feature is that they can generate a reverse force after being compressed to maintain continuous pressure on the valve plate.

[0053] Example 3:

[0054] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Furthermore, the working positions of the valve plate 2 include:

[0056] First working position 6, blind flange 8 closes valve body 1 channel;

[0057] Second working position 7, the through plate 9 is aligned with the valve body 1 channel.

[0058] By adopting the above technical solution, the two working positions of the valve plate 2 are clearly defined: the first working position 6 where the blind plate 8 closes the valve body 1 channel and the second working position 7 where the through plate 9 aligns with the valve body 1 channel. This defines the core state of the valve plate 2 in realizing the on / off control of the valve body 1 channel, providing a clear benchmark for the setting and positioning of the locking mechanism 4. This allows the locking mechanism 4 to fix the valve plate 2 in different functional states, ensuring that the valve plate 2 can stably remain in the corresponding preset position after completing the operation of cutting off or opening the medium, thus meeting the basic requirements of industrial pipelines for the on / off control of medium transportation.

[0059] Example 4:

[0060] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] Furthermore, the locking mechanism 4 is configured in two sets, with the first set of locking mechanism 4 corresponding to the first working position 6 of the valve plate 2 and the second set of locking mechanism 4 corresponding to the second working position 7 of the valve plate 2.

[0062] By adopting the above technical solution, the locking mechanism 4 is configured as two sets, with the first set of locking mechanism 4 corresponding to the first working position 6 of the valve body 1 channel closed by the blind plate 8 of the valve plate 2, and the second set of locking mechanism 4 corresponding to the second working position 7 of the valve body 1 channel aligned with the through plate 9 of the valve plate 2. The two sets of locking mechanisms 4 can respectively press and position the valve plate 2 in different functional states, avoiding positioning deviation or cumbersome operation when a single locking mechanism 4 is adapted to different positions. This ensures that the valve plate 2 can obtain stable positioning constraints through the corresponding locking mechanism 4 whether it achieves the closure or opening of the valve body 1 channel, and adapts to the fixing requirements of different working states of the valve plate 2.

[0063] Example 5:

[0064] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Furthermore, the limiting head 420 is a polygonal prism, and the surface of the valve plate 2 is provided with a limiting groove 11 that cooperates with the limiting head 420.

[0066] By adopting the above technical solution, the limiting head 420 is set as a polygonal prism structure, and a limiting groove 11 adapted to the limiting head 420 is opened on the surface of the valve plate 2. When the locking rod 42 passes through the through hole 3 of the valve plate 2 to complete the positioning, the polygonal prism limiting head 420 can be embedded in the limiting groove 11 on the surface of the valve plate 2. The anti-rotation characteristics of the polygonal structure are used to limit the relative rotation between the locking rod 42 and the valve plate 2, so as to prevent the locking rod 42 from circumferential displacement during the tightening of the locking nut 43 or during the operation of the equipment. At the same time, the cooperation between the limiting head 420 and the limiting groove 11 can further enhance the limiting effect of the locking rod 42 on the valve plate 2 and maintain the stability of the valve plate 2 in the working position.

[0067] Example 6:

[0068] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] Furthermore, the clamping plate 41 is fixed to the support base 40 by the upright plate 12.

[0070] By adopting the above technical solution, a plate-shaped upright plate 12 is used as the connecting component between the clamping plate 41 and the support base 40. One end of the upright plate 12 is fixedly connected to the support base 40 by welding or bolt fastening, and the other end is fixedly connected to the clamping plate 41 in the same way. The plate-shaped structure of the upright plate 12 can provide stable support for the clamping plate 41. By adjusting the installation distance and angle between the clamping plate 41 and the support base 40, the two clamping plates 41 are kept in a relatively set state and form a compression space 5 that is adapted to the installation of the elastic pressing member 44. At the same time, this connection method can enhance the connection stability between the clamping plate 41 and the support base 40, prevent the clamping plate 41 from shifting or loosening when subjected to the axial force of the locking nut 43, and ensure that the pressing action of the locking mechanism 4 can be stably implemented.

[0071] Example 7:

[0072] This embodiment provides an electric gear blind valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] Furthermore, the upright plate 12 is mounted on the gear mounting base 13 of the electric gear that drives the valve plate 2 to rotate.

[0074] By adopting the above technical solution, the upright plate 12 used to connect the clamping plate 41 and the support base 40 is installed on the gear mounting base 13 of the electric gear that drives the valve plate 2 to rotate. The upright plate 12 and the gear mounting base 13 are fixedly connected by bolts or welding. This installation method can integrate the locking mechanism 4 and the driving mechanism of the valve plate 2 together, reduce the installation space of the overall equipment, and at the same time make the position of the locking mechanism 4 precisely correspond to the working position of the valve plate 2 driven by the electric gear. This avoids the locking rod 42 from failing to accurately enter the through hole 3 of the valve plate 2 due to installation position deviation, ensures the coordination of the locking mechanism 4 and the driving mechanism, reduces interference between components, and maintains the stability of the entire blind plate 8 valve operation.

[0075] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An electric gear blind valve, comprising a valve body (1) and a valve plate (2) with a through hole (3) on its outer edge, characterized in that, It also includes at least a locking mechanism (4), said locking mechanism (4) comprising: A support base (40) is provided on the valve body (1); Two clamping plates (41) are disposed opposite to each other on the support base (40), and a compression space (5) is formed between the two clamping plates (41). The locking rod (42) passes through the through hole (3) and the two clamping plates (41) when the valve plate (2) is rotated to the working position. One end of the locking rod (42) is provided with a limiting head (420) and the other end is provided with a threaded section (421). The locking nut (43) engages with the threaded section (421); An elastic pressing member (44) is sleeved on the part of the locking rod (42) located in the compression space (5), and its two ends abut against the two clamping plates (41) respectively; Tightening the locking nut (43) can drive the clamping plate (41) to compress the elastic pressing member (44), and the valve plate (2) is pressed and positioned by the combined action of the limiting head (420) and the locking nut (43).

2. The electric gear blind valve according to claim 1, characterized in that, The elastic pressing element (44) is a helical spring.

3. The electric gear blind valve according to claim 1, characterized in that, The working positions of the valve plate (2) include: In the first working position (6), the blind plate (8) closes the valve body (1) passage; In the second working position (7), the through plate (9) is aligned with the valve body (1) channel.

4. An electric gear blind valve according to claim 3, characterized in that, The locking mechanism (4) is configured in two sets. The first set of locking mechanism (4) corresponds to the first working position (6) of the valve plate (2), and the second set of locking mechanism (4) corresponds to the second working position (7) of the valve plate (2).

5. An electric gear blind valve according to claim 1, characterized in that, The limiting head (420) is a polygonal prism, and the surface of the valve plate (2) is provided with a limiting groove (11) that cooperates with the limiting head (420).

6. An electric gear blind valve according to claim 1, characterized in that, The clamp (41) is fixed to the support base (40) by the upright plate (12).

7. An electric gear blind valve according to claim 6, characterized in that, The upright plate (12) is mounted on the gear mounting base (13) of the electric gear that drives the valve plate (2) to rotate.

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