Cut-off throttling device with labor-saving operation mechanism

Abstract

The utility model relates to the technical field of valves, in particular to a cut-off throttling device with a labor-saving operating mechanism, which controls the circulation of liquid in a pipeline through the throttling device, reduces the force required for opening and closing the valve at the initial stage, improves the structural stability of the device through an auxiliary structure, and improves the working efficiency. The driving device is matched with the throttling device, so that the force needed by an operator in the valve opening and closing process is reduced, the labor intensity of the operator in the large valve opening and closing process is reduced, and the practicability of the device is improved; comprising a throttling device, an auxiliary structure and a driving device, the auxiliary structure is installed on the throttling device, and the driving device is installed on the throttling device.

Description

Technical Field

[0001] This utility model relates to the technical field of valves, and in particular to a shut-off and throttling device with a labor-saving operating mechanism. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. They are also control components in fluid conveying systems. When a valve is closed, a certain sealing pressure needs to be formed between the valve element and the valve seat to ensure that the valve can close tightly and prevent media leakage. This sealing pressure requires a certain force to generate and maintain; therefore, a relatively large force needs to be applied at the final moment of closure to ensure a sealing effect. For some types of valves, at the initial moment of opening, the valve element needs to overcome the static friction between itself and the valve seat to begin moving. This static friction is usually greater than the dynamic friction, therefore a larger force is required to initiate the valve opening process.

[0003] The prior art Chinese utility model patent with application number CN202121569396.3 relates to a low-resistance, labor-saving shut-off valve, which includes a valve body, a valve cap, a handwheel, a valve screw, and a valve core plate. The valve body has an inlet, an outlet, and an opening and closing through hole. The valve screw and the valve cap are threaded together. This makes the shut-off valve simple and labor-saving to open and close.

[0004] However, in actual use, the above-mentioned device requires a certain force to be applied to the valve at the initial moment of opening and to the final state of closing. Especially for valves that have been in the open or closed state for a long time, the force required at the initial moment is large due to their own corrosion, which increases the difficulty for operators to open and close the valve. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a shut-off and throttling device with a labor-saving operating mechanism that controls the flow of liquid in a pipeline through a throttling device, reduces the force required for the initial opening and closing of the valve, improves the structural stability of the device through an auxiliary structure, and reduces the force required by the operator to open and close the valve through the cooperation of the drive device and the throttling device, thereby reducing the labor intensity of the operator in the process of opening and closing large valves and improving the practicality of the device.

[0006] This utility model discloses a shut-off and throttling device with a labor-saving operating mechanism; it includes a throttling device, an auxiliary structure, and a driving device. The auxiliary structure is installed on the throttling device, and the driving device is installed on the throttling device. The throttling device controls the flow of liquid in the pipeline, while reducing the force required for the initial opening and closing of the valve. The auxiliary structure improves the structural stability of the device. The driving device, in conjunction with the throttling device, reduces the force required by the operator during the opening and closing of the valve, thereby reducing the labor intensity of the operator in the process of opening and closing large valves and improving the practicality of the device.

[0007] Preferably, the throttling device includes a valve body, a flange, a valve stem, a first handwheel, a hexagonal rod, and a main gear. A set of flanges is respectively installed on the input and output ends of the valve body. A valve core is installed inside the valve body. The valve stem extends from the upper end face of the valve body to the upper side of the valve body and connects to the hexagonal rod. The first handwheel is connected to the upper part of the hexagonal rod. The main gear is mounted on the hexagonal rod and can move up and down on it. Through the cooperation of the main gear and the drive device, the labor intensity of the operator during valve stem rotation is reduced. The first handwheel facilitates quick valve stem rotation by the operator. The hexagonal rod limits the main gear and allows the main gear to move up and down following the rotation of the valve stem, improving the practicality of the device.

[0008] Preferably, the auxiliary structure includes an annular groove, through holes, and an annular limiting baffle. An annular groove is provided on the upper end face of the main gear, and multiple sets of through holes are evenly provided at the bottom of the annular groove. An annular limiting baffle is provided at the top and bottom of the hexagonal rod. The two sets of annular limiting baffles provide auxiliary limiting for the position of the main gear on the hexagonal rod. The annular groove facilitates the operator to hold the first handwheel for rapid rotation. The through holes allow the equipment to adapt to outdoor or humid environments, allowing water accumulated in the annular groove to drain quickly, reducing the rust on the upper end face of the main gear, and improving the practicality of the device.

[0009] Preferably, the drive device includes a support, a bearing housing, a support rod, and a gear rod. The support is mounted on the lower side of the valve body via a bracket. The support rod is connected to the upper end face of the support via the bearing housing. The gear rod is connected to the upper end face of the support rod. The gear rod meshes with the side of the main gear, and the lower end face of the gear rod is at the same height as the upper end face of the valve body. The gear rod has a stable rotational capacity through the cooperation of the bearing housing and the support rod. Furthermore, the meshing transmission between the gear rod and the outer side of the main gear reduces the force required to rotate the valve rod, lowers the labor intensity of the operator, and improves the practicality of the device.

[0010] Preferably, the device also includes a second handwheel, steel rods, and extension rods. The second handwheel is mounted on the upper end face of the gear rod. The inner and outer rings of the second handwheel are connected by multiple sets of steel rods. Two sets of steel rods on the same straight line have chambers inside, and two sets of through holes are provided on the outer side of the second handwheel, which communicate with the chambers in the two sets of steel rods respectively. The two sets of extension rods can be inserted into the chambers of the two sets of steel rods respectively. When the operator rotates the second handwheel, the outer parts of the two sets of extension rods can be pulled out from inside the steel rods, and only a portion of the extension rods can be inserted into the steel rods. With the help of the lever principle, the force required to rotate the second handwheel is reduced, the labor intensity of the operator is reduced, and the practicality of the device is improved.

[0011] Preferably, it also includes internal and external threads. The inner and outer sides of the outer side port of the second handwheel are provided with internal threads, and the two ends of the extension rod are respectively provided with a set of external threads. The external threads at both ends of the extension rod are connected to the internal threads on the port of the second handwheel. When not in operation, the extension rod is pushed into the steel rod as a whole, and the extension rod is rotated to connect the external threads of the extension rod with the internal threads of the port, preventing the extension rod from slipping out of the steel rod. When it is necessary to rotate the second handwheel, the extension rod is pulled out and rotated to connect the internal threads of the extension rod with the internal threads of the port. This increases the connection stability between the extension rod and the second handwheel, reduces the possibility of the extension rod slipping during rotation and causing injury to the operator, and improves the practicality of the device.

[0012] Preferably, it also includes anti-slip protrusions, with anti-slip protrusions provided on the outer end side of the extension rod; the anti-slip protrusions facilitate the operator to rotate the extension rod, improving the practicality of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the flow of liquid in the pipeline is controlled by the throttling device, while reducing the force required for the initial opening and closing of the valve; the structural stability of the device is improved by the auxiliary structure; the force required for the operator to open and close the valve is reduced by the cooperation of the drive device and the throttling device, thereby reducing the labor intensity of the operator in the process of opening and closing large valves and improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a first cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model;

[0017] Figure 4 This is an exploded structural diagram of the present invention;

[0018] Figure 5 This is a partially enlarged structural schematic diagram of the present invention;

[0019] The following are labels in the attached diagram: 1. Valve body; 2. Flange; 3. Valve stem; 4. First handwheel; 5. Hexagonal rod; 6. Main gear; 7. Annular groove; 8. Through hole; 9. Annular limit baffle; 10. Support; 11. Bearing seat; 12. Support rod; 13. Gear rod; 14. Second handwheel; 15. Steel rod; 16. Extension rod; 17. Internal thread; 18. External thread; 19. Anti-slip protrusion. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the auxiliary structure is mounted on the throttling device, and the drive device is mounted on the throttling device;

[0022] First, pull out the extension rod 16 and rotate it to connect the external thread 18 inside the extension rod 16 with the internal thread 17 inside the port. Then, hold both sets of extension rods 16 with both hands and rotate the second handwheel 14. The meshing transmission between the second handwheel 14 and the main gear 6 drives the main gear 6 to rotate, which in turn drives the valve stem 3 to rotate and drive the valve body 1 to open and close. After the initial rotation of the valve stem 3, the rotation resistance of the valve stem 3 decreases. Then, the operator pushes the extension rod 16 into the steel rod 15 as a whole and rotates the extension rod 16 to connect the external thread 18 outside the extension rod 16 with the internal thread 17 outside the port to prevent the extension rod 16 from slipping out of the steel rod 15. After that, simply hold the first handwheel 4 and rotate the valve stem 3.

[0023] The throttling device includes a valve body 1, a flange 2, a valve stem 3, a first handwheel 4, a hexagonal rod 5, and a main gear 6. A set of flanges 2 are respectively provided on the input end and the output end of the valve body 1. A valve core is provided inside the valve body 1. The valve stem 3 extends from the upper end face of the valve body 1 to the upper side of the valve body 1 and is connected to the hexagonal rod 5. The first handwheel 4 is connected to the upper part of the hexagonal rod 5. The main gear 6 is mounted on the hexagonal rod 5 and can move up and down on the hexagonal rod 5.

[0024] The auxiliary structure includes an annular groove 7, through holes 8 and an annular limiting baffle 9. An annular groove 7 is provided on the upper end surface of the main gear 6. Multiple sets of through holes 8 are evenly provided at the bottom of the annular groove 7. A set of annular limiting baffles 9 are provided at the top and bottom of the hexagonal rod 5 respectively.

[0025] The drive device includes a support 10, a bearing seat 11, a support rod 12 and a gear rod 13. The support 10 is mounted on the lower side of the valve body 1 via a bracket. The support rod 12 is connected to the upper end face of the support 10 via the bearing seat 11. The gear rod 13 is connected to the upper end face of the support rod 12. The gear rod 13 meshes with the side of the main gear 6, and the lower end face of the gear rod 13 is at the same height as the upper end face of the valve body 1.

[0026] It also includes a second handwheel 14, steel rods 15 and extension rods 16. The second handwheel 14 is installed on the upper end face of the gear rod 13. The inner and outer rings of the second handwheel 14 are connected by multiple sets of steel rods 15. Two sets of steel rods 15 on the same straight line have chambers inside. Two sets of through holes are provided on the outer side of the second handwheel 14, which are respectively connected to the chambers in the two sets of steel rods 15. The two sets of extension rods 16 can be inserted into the chambers of the two sets of steel rods 15 respectively.

[0027] It also includes internal threads 17 and external threads 18. The inner and outer sides of the outer side port of the second handwheel 14 are provided with internal threads 17, and the two ends of the extension rod 16 are respectively provided with a set of external threads 18.

[0028] It also includes anti-slip protrusions 19, which are provided on the outer end side of the extension rod 16;

[0029] The flow of liquid in the pipeline is controlled by a throttling device, which reduces the force required for the initial opening and closing of the valve. The auxiliary structure improves the structural stability of the device. The drive device works in conjunction with the throttling device to reduce the force required for operators to open and close the valve, thereby reducing the labor intensity of operators in the process of opening and closing large valves and improving the practicality of the device.

[0030] like Figures 1 to 5As shown, this utility model discloses a cutting-off and throttling device with a labor-saving operating mechanism. During operation, the extension rod 16 is first pulled out and rotated to connect the external thread 18 inside the extension rod 16 with the internal thread 17 inside the port. Then, both sets of extension rods 16 are held with both hands, and the second handwheel 14 is rotated. The meshing transmission between the second handwheel 14 and the main gear 6 drives the main gear 6 to rotate, which in turn drives the valve stem 3 to rotate, thus opening and closing the valve body 1. After the initial rotation of the valve stem 3, the rotational resistance of the valve stem 3 decreases. The operator then pushes the extension rod 16 as a whole into the steel rod 15 and rotates the extension rod 16 to connect the external thread 18 outside the extension rod 16 with the internal thread 17 outside the port, preventing the extension rod 16 from slipping out of the steel rod 15. Afterwards, the first handwheel 4 is held directly to rotate the valve stem 3.

[0031] The valve body 1 and bearing seat 11 of the cutting-off and throttling device with a labor-saving operating mechanism of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cutting-off and throttling device with a labor-saving operating mechanism; characterized in that, It includes a throttling device, an auxiliary structure, and a driving device. The auxiliary structure is installed on the throttling device, and the driving device is installed on the throttling device. The throttling device includes a valve body (1), a flange (2), a valve stem (3), a first handwheel (4), a hexagonal rod (5), and a main gear (6). A set of flanges (2) is respectively provided on the input end and the output end of the valve body (1). A valve core is provided inside the valve body (1). The valve stem (3) extends from the upper end face of the valve body (1) to the upper side of the valve body (1) and connects to the hexagonal rod (5). The upper part of the hexagonal rod (5) is connected to the first handwheel (4), and the main gear (6) 6) It is mounted on a hexagonal rod (5) and can move up and down on the hexagonal rod (5); the drive device includes a support (10), a bearing seat (11), a support rod (12) and a gear rod (13). The lower side of the valve body (1) is equipped with a support (10) through a bracket. The upper end face of the support (10) is connected to the support rod (12) through the bearing seat (11). The upper end face of the support rod (12) is connected to the gear rod (13). The gear rod (13) meshes with the side of the main gear (6), and the lower end face of the gear rod (13) is at the same height as the upper end face of the valve body (1).

2. The cutting-off and throttling device with a labor-saving operating mechanism as described in claim 1, characterized in that, The auxiliary structure includes an annular groove (7), through holes (8) and an annular limiting baffle (9). An annular groove (7) is provided on the upper end surface of the main gear (6). Multiple sets of through holes (8) are evenly provided at the bottom of the annular groove (7). A set of annular limiting baffles (9) is provided at the top and bottom of the hexagonal rod (5).

3. A cutting-off and throttling device with a labor-saving operating mechanism as described in claim 2, characterized in that, It also includes a second handwheel (14), a steel rod (15) and an extension rod (16). The second handwheel (14) is installed on the upper end face of the gear rod (13). The inner and outer rings of the second handwheel (14) are connected by multiple sets of steel rods (15). Two sets of steel rods (15) on the same straight line have chambers inside. Two sets of through holes are provided on the outer side of the second handwheel (14) and communicate with the chambers in the two sets of steel rods (15). The two sets of extension rods (16) can be inserted into the chambers of the two sets of steel rods (15).

4. A cutting-off and throttling device with a labor-saving operating mechanism as described in claim 3, characterized in that, It also includes internal threads (17) and external threads (18). The inner and outer sides of the outer side port of the second handwheel (14) are provided with internal threads (17), and the two ends of the extension rod (16) are provided with a set of external threads (18).

5. A cutting-off and throttling device with a labor-saving operating mechanism as described in claim 4, characterized in that, It also includes anti-slip protrusions (19), and anti-slip protrusions (19) are provided on the outer end side of the extension rod (16).

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