Gas-manual switching device

Abstract

The utility model discloses a pneumatic and manual switching device which comprises a piston rod, a support is fixedly installed outside the piston rod, a rotating handle is fixedly installed inside the support and located on the surface of the piston rod, a protective cover is fixedly installed outside the rotating handle, and a valve rod is movably installed inside the lower end of the piston rod. A nut positioning block is fixedly installed at the bottom of the support and located outside the valve rod, a trapezoidal nut is installed in the nut positioning block in a threaded mode, a shell is fixedly installed outside the nut positioning block, and a gear disc is movably installed at the bottom of the shell. Through the application of the rotary gear shaft, the gear disc, the nut positioning block and the trapezoidal nut, the operation stability of the internal structure of the pneumatic actuator can be effectively guaranteed, the balance of the internal valve rod in the vertical movement process can be guaranteed, the movement efficiency is higher, and in addition, the device is lighter in weight, smaller in size and more time-saving to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a gas-manual switching device. Background Art

[0002] A pneumatic actuator is an actuator that uses air pressure to open, close or adjust a valve. It is also called a pneumatic actuator or a pneumatic device, but it is more commonly known as a pneumatic head.

[0003] The pneumatic actuators currently used have complex internal structures and cannot guarantee stability when the internal valve stem moves up and down, resulting in low movement efficiency. In addition, the device is heavy, larger in size, and more complicated to disassemble and assemble. Utility Model Content

[0004] The utility model aims to provide a gas-manual switching device, which has the advantages of higher movement efficiency and convenient operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas-manual switching device, comprising a piston rod, a bracket fixedly installed on the outside of the piston rod, a turning handle fixedly installed inside the bracket and located on the surface of the piston rod, a shield fixedly installed on the outside of the turning handle, a valve stem movably installed inside the lower end of the piston rod, a nut positioning block fixedly installed on the bottom of the bracket and located on the outside of the valve stem, a trapezoidal nut is installed on the internal thread of the nut positioning block, a shell is fixedly installed on the outside of the nut positioning block, a gear plate movably installed on the bottom of the shell, a gear shaft movably installed inside the right side of the shell, and a handwheel is fixedly installed on the right end of the gear shaft.

[0006] As a preferred solution, a locking pin is movably installed inside the right side of the shield, and a first bearing is fixedly installed between the bottom of the bracket and the upper end of the shell.

[0007] As a preferred solution, a second bearing is fixedly mounted on the inner cavity at the bottom of the shell, and a base connecting plate is fixedly mounted on the bottom of the second bearing.

[0008] As a preferred solution, a third bearing is fixedly mounted on the outside of the left end of the gear shaft, and the outside of the third bearing is connected to the inner wall of the housing.

[0009] As a preferred solution, a bearing cover is fixedly installed on the right side of the third bearing and outside the gear shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model can effectively ensure the stability of the internal structure of the pneumatic actuator and the balance of the internal valve stem when it moves up and down by setting the rotating gear shaft, gear plate, nut positioning block and trapezoidal nut, so as to make the movement more efficient. In addition, the device is lighter in weight, smaller in size and saves time in assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0013] Figure 2 It is a three-dimensional diagram of the structure of the utility model.

[0014] In the figure: 1. piston rod; 2. bracket; 3. shield; 4. locking pin; 5. turning handle; 6. first bearing; 7. nut positioning block; 8. trapezoidal nut; 9. housing; 10. second bearing; 11. valve stem; 12. gear plate; 13. base connecting plate; 14. third bearing; 15. bearing cover; 16. gear shaft; 17. handwheel. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0017] Embodiment 1:

[0018] See also Figure 1-2 As shown, the utility model provides a gas manual switching device, including a piston rod 1, a bracket 2 is fixedly installed on the outside of the piston rod 1, a turning handle 5 is fixedly installed inside the bracket 2 and on the surface of the piston rod 1, a shield 3 is fixedly installed outside the turning handle 5, a valve stem 11 is movably installed inside the lower end of the piston rod 1, a nut positioning block 7 is fixedly installed at the bottom of the bracket 2 and on the outside of the valve stem 11, a trapezoidal nut 8 is installed on the internal thread of the nut positioning block 7, a shell 9 is fixedly installed outside the nut positioning block 7, a gear plate 12 is movably installed on the bottom of the shell 9, a gear shaft 16 is movably installed inside the right side of the shell 9, and a hand wheel 17 is fixedly installed on the right end of the gear shaft 16.

[0019] The technical solution sets up the application of rotating gear shaft 16, gear plate 12, nut positioning block 7 and trapezoidal nut 8, which can effectively ensure the stability of the internal structure operation of the pneumatic actuator, and can also ensure the balance of the internal valve stem 11 when it moves up and down, making the movement efficiency higher. In addition, the device is lighter in weight, smaller in size, and saves time in disassembly and assembly.

[0020] Embodiment 2:

[0021] On the basis of embodiment 1, the present invention is as follows Figure 2 As shown, a locking pin 4 is movably installed inside the right side of the shield 3, a first bearing 6 is fixedly installed between the bottom of the bracket 2 and the upper end of the shell 9; a second bearing 10 is fixedly installed in the inner cavity at the bottom of the shell 9, and a base connecting plate 13 is fixedly installed at the bottom of the second bearing 10.

[0022] Use Figure 1 In the technical solution shown, the locking pin 4 can be used to turn the connecting handle 5 to drive the trapezoidal nut 8 to tighten the trapezoidal thread of the valve stem 11. The locking pin 4 is inserted into the pin hole to quickly complete the switching action, so that the pneumatic actuator can be used, and the second bearing 10 can limit the structure of the connection to make its rotation more stable.

[0023] Secondly, in the technical solution, a third bearing 14 is fixedly installed on the outside of the left end of the gear shaft 16, and the outside of the third bearing 14 is connected to the inner wall of the housing 9; a bearing cover 15 is fixedly installed on the right side of the third bearing 14 and located on the outside of the gear shaft 16.

[0024] Its use is as Figure 1 In the technical solution shown, the third bearing 14 can limit the left end of the gear shaft 16 to ensure stability during rotation, while the bearing cover 15 can seal and protect the right side.

[0025] The working principle of the utility model is as follows: the actuator is installed on the bracket 2, the valve is installed on the base connecting plate 13, the lock pin 4 is pulled out and turned to the specified manual position, the lock pin 4 turns the connecting handle 5 to drive the trapezoidal nut 8 to tighten the trapezoidal thread of the valve stem 11, and the lock pin 4 is inserted into the pin hole to complete the switching action; the middle keyway structure of the handwheel 17 is installed with a flat key to match the gear shaft 16, the arc bevel gear of the gear shaft 16 matches the gear plate 12, the gear plate 12 is installed on the nut positioning block 7, the nut positioning block 7 is embedded with the trapezoidal nut 8, the handwheel 17 is operated to rotate to link the rotating gear shaft 16, the gear plate 12, the nut positioning block 7, and the trapezoidal nut 8; the trapezoidal nut 8 rotates to drive the trapezoidal thread on the valve stem 11, so that the valve stem 11 moves up and down.

[0026] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0027] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A gas manual switching device, comprising a piston rod (1), characterized in that: A bracket (2) is fixedly mounted on the outside of the piston rod (1), a handle (5) is fixedly mounted inside the bracket (2) and located on the surface of the piston rod (1), a shield (3) is fixedly mounted on the outside of the handle (5), a valve stem (11) is movably mounted inside the lower end of the piston rod (1), a nut positioning block (7) is fixedly mounted at the bottom of the bracket (2) and located on the outside of the valve stem (11), a trapezoidal nut (8) is threadedly mounted on the inside of the nut positioning block (7), a housing (9) is fixedly mounted on the outside of the nut positioning block (7), a gear plate (12) is movably mounted on the bottom of the housing (9), a gear shaft (16) is movably mounted inside the right side of the housing (9), and a hand wheel (17) is fixedly mounted on the right end of the gear shaft (16).

2. The gas manual switching device according to claim 1, characterized in that: A locking pin (4) is movably installed inside the right side of the shield (3), and a first bearing (6) is fixedly installed between the bottom of the bracket (2) and the upper end of the shell (9).

3. The gas manual switching device according to claim 1, characterized in that: A second bearing (10) is fixedly mounted in the inner cavity at the bottom of the housing (9), and a base connecting plate (13) is fixedly mounted at the bottom of the second bearing (10).

4. The gas manual switching device according to claim 1, characterized in that: A third bearing (14) is fixedly mounted on the outside of the left end of the gear shaft (16), and the outside of the third bearing (14) is connected to the inner wall of the housing (9).

5. The gas manual switching device according to claim 4, characterized in that: A bearing cover (15) is fixedly installed on the right side of the third bearing (14) and outside the gear shaft (16).

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