Valve positioning device for rail crossing refrigerating machine room

Abstract

The utility model discloses a rail crossing refrigerating machine room valve positioning device which comprises a valve body, a valve rod is installed at the top end of the valve body, a rotating disc is arranged at the top of the valve rod, a first gear is arranged on the surface of the valve rod, a mounting plate is arranged on one side of the first gear, and a second gear is arranged on the mounting plate. A second gear is rotationally connected to the bottom end of the inner wall of the mounting plate, a groove is formed in the center of the top end of the second gear, and a positioning locking piece is arranged at the top of the second gear. When the valve rod needs to be positioned, pressure is applied to the second gear through the positioning locking piece and the groove, the second gear is locked through friction force, the second gear is made to be in a static state, a rigid force transmission chain is formed through meshing transmission, and the locking state of the second gear can be indirectly transmitted to the valve rod through the first gear. Therefore, high-precision positioning and anti-maloperation protection of the valve rod are achieved, and the valve rod is suitable for complex working conditions such as high-frequency vibration of the rail transit refrigeration machine room.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve positioning device for a refrigeration room in a rail transit system. Background Technology

[0002] A valve is a mechanical device used to control parameters such as the flow direction, flow rate, and pressure of fluids in pipelines or equipment. It achieves functions such as cutting off, conducting, distributing, regulating, or protecting the medium by opening, closing, or adjusting the position of the valve core. It is a pipeline accessory used to open and close pipelines, control the flow direction of fluids, and regulate flow rate and pressure. It has functions such as shut-off, flow guiding, pressure stabilization, flow splitting, backflow prevention, and safety protection. It is widely used in various fluid transportation systems such as air, water, steam, corrosive media, oil, and liquid metals.

[0003] The existing utility model patent with publication number CN219198321U discloses a valve. "This device uses an isolator to isolate the packing from the packing gland. Therefore, when the packing gland rotates, it presses the isolator, and then the isolator presses the packing. The isolator can overcome the influence of the axial rotation torque of the packing gland on the packing. Thus, this utility model isolates the packing from the packing through the isolator, reducing the direct action of the packing gland on the packing and causing the packing to be twisted." While this solves the problem of "deformation of the packing, leading to the twisted part not fully fitting the valve stem and causing leakage," in rail transit chiller rooms, valves are key equipment for controlling the flow of fluids such as chilled water and cooling water. Their performance directly affects the operating efficiency and safety of the room. After the valve is fully closed or adjusted to a specific opening, because there is no mechanical locking structure between the valve stem and the valve body, it relies solely on the operating torque to maintain its position. When the pipeline vibrates, the equipment is impacted, or external forces are applied, the valve stem is prone to rotation, causing a change in the valve's state and affecting system stability. Therefore, a valve positioning device for rail transit chiller rooms is proposed. Utility Model Content

[0004] Therefore, it is necessary to provide a valve positioning device for a refrigeration room in a rail transit system to address the aforementioned technical problems.

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problem that the valve stem is prone to rotation when the pipeline vibrates, the equipment is impacted, or the external force is applied through the following technical solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A valve positioning device for a refrigeration room in a rail transit system, comprising:

[0008] A valve body, wherein a valve stem is mounted on the top of the valve body, and a rotating disc is provided on the top of the valve stem;

[0009] Gear 1 is disposed on the surface of the valve stem. A mounting plate is disposed on one side of gear 1. Gear 2 is rotatably connected to the bottom end of the inner wall of the mounting plate. A groove is provided at the center of the top end of gear 2. A positioning locking element is disposed on the top of gear 2. An installation element is disposed between the mounting plate and the valve body.

[0010] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, the outer wall of the valve stem is provided with multiple sliding grooves, and the inner wall of the first gear is fixedly connected with multiple sliders. The multiple sliders are slidably connected to the inner cavities of the multiple sliding grooves respectively, and the second gear meshes with the first gear.

[0011] In a preferred embodiment of the valve positioning device for a refrigeration room in a track crossing provided by this utility model, a threaded groove is provided at the center of the bottom end of the rotating disk, and the threaded groove is threadedly connected to the top of the valve stem.

[0012] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, a friction ring is fixedly connected to the inner wall of the groove.

[0013] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, the positioning locking component includes a screw threadedly connected to the top of the mounting plate, and a pressure block is fixedly connected to the bottom end of the screw.

[0014] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, the shape of the pressure block is adapted to the groove, and a knob is fixedly connected to the top of the screw.

[0015] As a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, the mounting component includes a mounting groove formed on one side of the top of the valve body, and a mounting strip is fixedly connected to the bottom end of the mounting plate.

[0016] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, a through hole is provided on one side wall of the mounting strip, and the mounting strip is slidably connected to the inner cavity of the mounting groove.

[0017] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, a rotating rod is rotatably connected to one side of the inner wall of the mounting groove.

[0018] In a preferred embodiment of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model, one end of the rotating rod extends movably through the inner cavity of the through hole to the outside and is fixedly connected to a stop block.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model provides a valve positioning device for a refrigeration room in rail transit. When the valve stem needs to be positioned, pressure is applied to the second gear through the positioning locking element and the groove. The friction force locks the second gear, keeping it in a stationary state. A rigid force transmission chain is formed through meshing transmission. The locked state of the second gear can be indirectly transmitted to the valve stem through the first gear, thereby achieving high-precision positioning of the valve stem and protection against accidental operation. It is suitable for complex working conditions such as high-frequency vibration in refrigeration rooms of rail transit.

[0021] This utility model provides a valve positioning device for a refrigeration room in a rail transit system. By providing mounting parts and a sliding groove, when gear one and gear two are worn, the adjusting block can be adjusted to overlap with the inner cavity of the through hole, thereby releasing the restriction on the mounting strip. Then, the mounting plate can be removed from the valve body to facilitate the replacement of gear two by the operator. By separating the rotating disc from the valve stem, gear one can be disassembled and replaced through the slider and sliding groove. The operation is simple and quick. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This utility model provides a partially disassembled structural schematic diagram;

[0025] Figure 3 This utility model provides a structural schematic diagram showing the valve stem portion disassembled;

[0026] Figure 4 This utility model provides a structural schematic diagram of the mounting plate and its components;

[0027] Figure 5 Provided for this utility model Figure 4 A schematic diagram of the partially disassembled structure;

[0028] Figure 6A structural schematic diagram of gear two is provided for this utility model.

[0029] The markings in the diagram are explained as follows:

[0030] 1. Valve body; 2. Valve stem; 3. Rotary disc; 4. Gear 1; 5. Mounting plate; 6. Gear 2; 7. Positioning and locking element; 71. Screw; 72. Pressure block; 73. Knob; 8. Mounting element; 81. Mounting groove; 82. Mounting strip; 83. Through hole; 84. Rotating rod; 85. Abutment block; 9. Slide groove; 10. Sliding block; 11. Threaded groove; 12. Groove; 13. Friction ring. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A valve positioning device for a refrigeration room in a rail transit system includes a valve body 1, a valve stem 2 installed at the top of the valve body 1 as an actuator for opening and closing the valve, and the valve core is opened and closed by rotation. A rotating disk 3 is provided at the top of the valve stem 2 for the operator to manually rotate the valve stem 2. Multiple sliding grooves 9 are provided on the outer wall of the valve stem 2, and multiple sliders 10 are slidably connected to the inner cavity of the multiple sliding grooves 9 respectively. A threaded groove 11 is provided at the center of the bottom end of the rotating disk 3, and the threaded groove 11 is threadedly connected to the top of the valve stem 2.

[0033] Gear 1 4 has multiple sliders 10 fixedly connected to its inner wall, serving as the transmission core to transmit the rotational torque of the valve stem 2 to gear 2 6. Through the sliding engagement of the sliders 10 and the sliding grooves 9, quick assembly and disassembly with the valve stem 2 are achieved. Gear 1 4 is set on the surface of the valve stem 2, and a mounting plate 5 is set on one side of gear 1 4. Gear 2 6 is rotatably connected to the bottom end of the inner wall of the mounting plate 5. The groove 12 at the top engages with the positioning locking element 7 to position the valve stem 2. Gear 2 6 meshes with gear 1 4. A groove 12 is opened at the center of the top of gear 2 6. A friction ring 13 is fixedly connected to the inner wall of the groove 12 to increase the friction when the groove 12 is connected to the pressure block 72. A positioning locking element 7 is set at the top of gear 2 6. An mounting element 8 is set between the mounting plate 5 and the valve body 1.

[0034] Preferably, the positioning locking component 7 includes a screw 71 threadedly connected to the top of the mounting plate 5. When the screw 71 is rotated, the pressure block 72 will move up and down with the screw 71. The bottom end of the screw 71 is fixedly connected to the pressure block 72 to press and position the gear 6. The shape of the pressure block 72 is adapted to the groove 12. The top end of the screw 71 is fixedly connected to the knob 73.

[0035] Preferably, the mounting component 8 includes a mounting groove 81 formed on one side of the top of the valve body 1, and a mounting strip 82 fixedly connected to the bottom end of the mounting plate 5. The mounting groove 81 and the mounting strip 82 are T-shaped. A through hole 83 is formed on one side wall of the mounting strip 82 for the rotation rod 84 and the stop block 85 to pass through. The mounting strip 82 is slidably connected to the inner cavity of the mounting groove 81. A rotation rod 84 is rotatably connected to one side of the inner wall of the mounting groove 81. One end of the rotation rod 84 extends to the outside through the inner cavity of the through hole 83 and is fixedly connected to the stop block 85 to limit the position of the mounting plate 5.

[0036] The operation of the valve positioning device for a refrigeration room in a rail transit system provided by this utility model is as follows: First, the operator rotates the valve stem 2 by rotating the rotating disk 3 to adjust the valve core inside the valve body 1. Then, as needed, the operator can manually rotate the knob 73 to move the screw 71 downwards, causing the pressure block 72 to enter the inner cavity of the groove 12 and press the gear 6 to prevent it from rotating. Since the gear 6 meshes with the gear 4, when the gear 6 cannot rotate, the valve stem 2 will also be difficult to rotate due to the slider 10, the groove 9, and the gear 4. This prevents the valve stem 2 from being damaged by non-human force. When the gear 4 and the gear 6 wear out after long-term use, the operator can rotate the rotating disk 3 to disengage from the valve stem 2. Then, the gear 4 can be removed from the valve stem 2 for replacement. By rotating the rotating rod 84, the abutment 85 is aligned with the through hole 83. Then, the mounting plate 5 can be moved to disengage from the valve body 1, thus completing the disassembly and replacement of the gear 6.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A valve positioning device for a refrigeration room in a rail transit system, characterized in that, It includes: The valve body (1), the top end of the valve body (1) is provided with a valve stem (2), and the top of the valve stem (2) is provided with a rotating disc (3); Gear one (4) is arranged on the surface of the valve stem (2), one side of the gear one (4) is provided with a mounting plate (5), the inner wall of the mounting plate (5) is rotatably connected with a gear two (6) at the bottom end, a recess (12) is formed in the center of the top of the gear two (6), and a positioning locking member (7) is arranged on the top of the gear two (6). The mounting plate (5) and the valve body (1) are provided with a mounting member (8).

2. A trackway chiller plant valve positioning device as set forth in claim 1, wherein, A plurality of sliding grooves (9) are formed in the outer wall surface of the valve stem (2), a plurality of sliding blocks (10) are fixedly connected to the inner wall of the gear one (4), and the plurality of sliding blocks (10) are respectively and slidably connected with the inner cavities of the plurality of sliding grooves (9). The gear two (6) is engaged with the gear one (4).

3. A trackway chiller plant valve positioning device as set forth in claim 1, wherein, A threaded groove (11) is formed in the center of the bottom end of the rotating disc (3), and the threaded groove (11) is threadedly connected with the top of the valve stem (2).

4. A trackway chiller plant valve positioning device as set forth in claim 1, wherein, The inner wall of the recess (12) is fixedly connected with a friction ring (13).

5. A trackway chiller plant valve positioning device as set forth in claim 1, wherein, The positioning locking member (7) comprises a screw rod (71) threadedly connected with the top end of the mounting plate (5), and the bottom end of the screw rod (71) is fixedly connected with a pressing block (72).

6. A trackway chiller plant valve positioning device as set forth in claim 5, wherein, The pressing block (72) is matched with the shape of the recess (12), and the top end of the screw rod (71) is fixedly connected with a knob (73).

7. A trackway chiller plant valve positioning device as set forth in claim 1, wherein, The mounting member (8) comprises a mounting groove (81) formed in one side of the top end of the valve body (1), and the bottom end of the mounting plate (5) is fixedly connected with a mounting strip (82).

8. A trackway chiller plant valve positioning device as set forth in claim 7, wherein, A through hole (83) is formed in one side wall of the mounting strip (82), and the mounting strip (82) is slidably connected with the inner cavity of the mounting groove (81).

9. A trackway chiller plant valve positioning device as set forth in claim 7, wherein, A rotating rod (84) is rotatably connected to one side of the inner wall of the mounting groove (81).

10. A trackway chiller plant valve positioning device as set forth in claim 9, wherein, One end of the rotating rod (84) extends to the outside through the inner cavity of the through hole (83) and is fixedly connected with an abutting block (85).

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