Valve transmission shaft

Abstract

The utility model discloses a valve transmission shaft which comprises a transmission shaft, a rectangular shaft head and a shaft head sleeve, and further comprises a transmission sleeve, a push rod, a threaded connecting plug and a connecting chain, the rectangular shaft head integrated with the transmission shaft is arranged at the top of the transmission shaft, the shaft head sleeve is arranged on the rectangular shaft head in a sleeving mode, and the shaft head sleeve is connected with the rectangular shaft head in a gluing mode. A transmission sleeve is welded to one side of the shaft head sleeve, and the push rod is located at the end of the transmission sleeve. A set of transmission shaft mechanism capable of disassembling and placing a pushing and rotating transmission structure of a transmission shaft is provided for the manual valve, so that labor-saving lever thrust of personnel on a valve shaft rod is guaranteed, and meanwhile, after the manual valve is used, a pushing rod piece can be disassembled and placed, so that the occupied space of the manual valve is reduced, and the working efficiency is improved. And meanwhile, the convenience of the whole valve in the transfer period is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve drive shaft. Background Technology

[0002] In valve applications, some valves are still manually operated due to reliability requirements. Manual valves open and close by manually rotating the valve or by rotating the rod on the drive shaft.

[0003] The rotational thrust of the existing manually operated valve drive shaft is mainly based on the thrust of the rod on the drive shaft. The longer the rod, the less force is required to push it, which is more labor-saving. However, it is unavoidable that the rod occupies a large space in the environment, causing inconvenience to people in the surrounding area.

[0004] The existing manual valve drive shafts have the following drawbacks: they cannot guarantee that the drive shaft components will not occupy too much space while ensuring effortless force application during push-turn transmission. Therefore, we propose a new valve drive shaft. Summary of the Invention

[0005] The main objective of this invention is to provide a valve drive shaft that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A valve drive shaft includes a drive shaft, a rectangular shaft head and a shaft head sleeve, and also includes a transmission sleeve, a push rod, a threaded connector and a connecting chain. The top of the drive shaft is provided with an integral rectangular shaft head, the shaft head sleeve is sleeved on the rectangular shaft head and glued together with the shaft head sleeve. The transmission sleeve is welded to one side of the shaft head sleeve, and the push rod is located at the end of the transmission sleeve.

[0008] Furthermore, the end of the push rod is provided with an integral threaded connector, and one end of the connecting chain is rotatably connected to the threaded connector via a bearing.

[0009] Furthermore, the other end of the connecting chain is inserted into the transmission sleeve, and the other end of the connecting chain is welded to the inner wall of the transmission sleeve.

[0010] Furthermore, one end of the transmission sleeve is provided with an internal threaded connector corresponding to the threaded connector.

[0011] Compared with the prior art, this utility model has the following beneficial effects: By using an assembly consisting of a drive shaft, a rectangular shaft head, a shaft head sleeve, a drive sleeve, a push rod, a threaded connector, and a connecting chain, a drive shaft mechanism is provided for manual valves, allowing the drive shaft's push-rotation transmission structure to be disassembled and lowered. This ensures that personnel can apply a relatively effortless lever force to the valve shaft, while the push rod can be disassembled and lowered after use to reduce its space occupation. It also contributes to the convenience of the valve as a whole during transportation, solving the problem that the drive shaft of existing manual valves cannot guarantee effortless push-rotation transmission while ensuring that the drive shaft's transmission rod does not occupy a large space. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a valve drive shaft according to the present invention.

[0013] Figure 2 This is a schematic diagram of the transmission shaft structure of a valve transmission shaft according to the present invention.

[0014] Figure 3 This is a schematic diagram of the transmission shaft structure of a valve transmission shaft according to the present invention.

[0015] Figure 4 This is a schematic diagram of the transmission sleeve structure of a valve transmission shaft according to the present invention.

[0016] In the diagram: 1. Drive shaft; 2. Rectangular shaft head; 3. Shaft head sleeve; 4. Drive sleeve; 5. Push rod; 6. Threaded connector; 7. Internal threaded connector; 8. Connecting chain. Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-4 As shown, a valve drive shaft includes a drive shaft 1, a rectangular shaft head 2, and a shaft head sleeve 3, as well as a drive sleeve 4, a push rod 5, a threaded connector 6, and a connecting chain 8. The top of the drive shaft 1 is provided with an integral rectangular shaft head 2. The shaft head sleeve 3 is sleeved on the rectangular shaft head 2, and the shaft head sleeve 3 and the rectangular shaft head 2 are glued together. The drive sleeve 4 is welded to one side of the shaft head sleeve 3, and the push rod 5 is located at the end of the drive sleeve 4.

[0019] The push rod 5 has an integral threaded connector 6 at its end, and one end of the connecting chain 8 is rotatably connected to the threaded connector 6 via a bearing.

[0020] The other end of the connecting chain 8 is inserted into the transmission sleeve 4, and the other end of the connecting chain 8 is welded to the inner wall of the transmission sleeve 4.

[0021] The transmission sleeve 4 has an internal threaded interface 7 at one end that corresponds to the threaded connector 6.

[0022] It should be noted that this utility model is a valve drive shaft. During operation, the operator installs the bottom of the drive shaft 1 with the valve plate shaft of the valve. When the valve plate needs to be pushed, the operator can push the drive shaft 1 based on the push rod 5 on the drive sleeve 4, so that the drive sleeve 4 transmits the thrust to the drive shaft 1, causing the drive shaft 1 to drive the valve plate to rotate, thereby realizing the opening and closing of the valve. After use, the operator can rotate the push rod 5 to separate the threaded connector 6 at the end of the push rod 5 from the internal threaded connector 7 in the drive sleeve 4, so that the push rod 5 can be lowered, thereby reducing the space occupied by the push rod 5. During this process, the drive sleeve 4 and the push rod 5 are connected by the connecting chain 8.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A valve drive shaft comprising a drive shaft (1), a rectangular shaft head (2) and a shaft head sleeve (3), characterized in that It also includes transmission sleeve (4), push rod (5), threaded plug (6) and connecting chain (8), the top of the transmission shaft (1) is provided with a rectangular shaft head (2) as one, the shaft head sleeve (3) is sleeved on the rectangular shaft head (2), and the shaft head sleeve (3) is glued between the rectangular shaft head (2), the shaft head sleeve (3) is welded with transmission sleeve (4) on one side, the push rod (5) is located in the end of transmission sleeve (4).

2. A valve drive shaft as claimed in claim 1, characterized in that: The end of the push rod (5) is provided with a threaded plug (6) as one, one end of the connecting chain (8) is rotatably connected with the threaded plug (6) through the bearing.

3. A valve drive shaft as defined in claim 1, wherein: The other end of the connecting chain (8) is inserted into the transmission sleeve (4), and the other end of the connecting chain (8) is welded with the inner wall of the transmission sleeve (4).

4. The valve drive shaft of claim 1, wherein: The inner end of the transmission sleeve (4) is provided with an inner threaded plug (7) corresponding to the threaded plug (6).

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