Valve operating mechanism capable of automatically returning and locking

Abstract

The utility model provides a valve operating mechanism capable of automatically returning and locking. The valve operating mechanism comprises a valve body, the valve cover is connected with one end of the valve body; the valve clack is contained in the valve body and the valve cover, the valve clack movably penetrates through the upper end and the lower end of the valve body, and the tail end of the valve clack and the valve body are arranged in a sealed mode; the hand wheel is arranged on one side of the valve cover; the shaft gear is arranged in the valve cover and is connected with the hand wheel through a hand wheel shaft; the rack is arranged in the valve cover in a limited mode, the rack is meshed with the shaft tooth through a gear, and the rack is connected with the valve clack; the hand wheel drives the shaft gear to rotate in the rotating process, the rack drives the valve clack to move at the upper end and the lower end of the valve body, liquid taking of a liquid taking bottle is achieved, operation is convenient, and the valve operation mechanism capable of automatically returning and locking is good in overall sealing effect, capable of eliminating an outlet runner, free of sample residues and capable of reducing pollution to the environment.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of valves, and in particular to a valve operating mechanism which can automatically return to a position and can be locked. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief.

[0003] A liquid extraction valve is a type of valve. In order to achieve process control during production, it is often necessary to sample and analyze raw materials, semi-finished products and finished products. The existing liquid extraction valve adopts a ball valve structure, a conical plunger structure, a lever compression spring structure and a spiral compression spring structure. During use, a screw threaded connection is used to drive the valve stem to move up and down. This operation mode has a large valve operating torque and is not easy to operate. On this basis, and in order to meet the diversified development of the market, a new type of valve operating mechanism that can automatically return and lock is proposed. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model:

[0005] The utility model provides a valve operating mechanism which can automatically return to its original position and can be locked, so as to solve the technical problems existing in the above-mentioned background technology.

[0006] 2. Technical solution:

[0007] In order to achieve the above purpose, the technical solution provided by the utility model is as follows:

[0008] A valve operating mechanism capable of automatically returning to its original position and locking, comprising a valve body;

[0009] A valve cover connected to one end of the valve body;

[0010] The valve disc is accommodated in the valve body and the valve cover, and the valve disc movably passes through the upper and lower ends of the valve body, and the end of the valve disc is sealed with the valve body;

[0011] A hand wheel is arranged on one side of the valve cover;

[0012] The shaft gear is arranged in the valve cover, and the shaft gear is connected to the hand wheel through the hand wheel shaft;

[0013] The rack is limitedly arranged in the valve cover, and the rack is engaged with the shaft gear, and the rack is connected to the valve disc;

[0014] A liquid collection bottle is connected to the other end of the valve body;

[0015] The hand wheel rotates to drive the shaft gear to rotate, and the rack drives the valve disc to move at the upper and lower ends of the valve body to realize liquid collection from the liquid collection bottle.

[0016] A further improvement is that it also includes a handwheel actuator connected to the handwheel.

[0017] A further improvement is that it also includes a spring pad arranged on the outer side of the rack, a return spring is arranged on the spring pad, and the other end of the return spring is arranged on the inner wall of the top end of the valve cover.

[0018] A further improvement is that the end of the valve flap is arranged in a conical surface.

[0019] 3. Beneficial effects:

[0020] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0021] The utility model is easy to operate, by pulling the handwheel and rotating the handwheel counterclockwise, the handwheel drives the shaft gear to rotate through the handwheel shaft, and the valve disc is driven to move upward during the rotation of the shaft gear. At this time, the liquid in the valve body will flow into the liquid collection bottle. After the liquid is taken out of the liquid collection bottle, the handwheel is released, and the reset spring resets to drive the rack and the valve disc to move downward, closing the liquid collection channel, and the liquid collection is completed. The overall sealing effect is good, the outlet flow channel can be eliminated, no sample residue is left, and the pollution to the environment is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0024] Figure 3 This is a schematic diagram of the hand wheel connection relationship of the utility model.

[0025] Reference numerals:

[0026] 1-valve body; 2-valve cover; 3-valve disc; 4-handwheel; 5-shaft gear; 6-handwheel shaft; 7-rack; 8-handwheel actuator; 9-spring pad; 10-reset spring. DETAILED DESCRIPTION

[0027] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Reference Figure 1-3 , this embodiment provides a valve operating mechanism that can automatically return and lock, including a valve body 1;

[0030] A valve cover 2 is connected to one end of the valve body 1;

[0031] The valve disc 3 is accommodated in the valve body 1 and the valve cover 2, and the valve disc 3 movably passes through the upper and lower ends of the valve body 1, and the end of the valve disc 3 is sealed with the valve body 1;

[0032] A hand wheel 4 is arranged on one side of the valve cover 2;

[0033] The shaft gear 5 is arranged in the valve cover 2, and the shaft gear 5 is connected to the hand wheel 4 through the hand wheel shaft 6;

[0034] The rack 7 is limitedly arranged in the valve cover 2, and the rack 7 is engaged with the shaft gear 5, and the rack 7 is connected to the valve disc 3;

[0035] A liquid collection bottle is connected to the other end of the valve body 1;

[0036] The hand wheel 4 rotates to drive the shaft gear 5 to rotate, and the rack 7 drives the valve flap 3 to move at the upper and lower ends of the valve body 1 to achieve liquid collection from the liquid collection bottle.

[0037] This embodiment also includes a handwheel actuator 8 connected to the handwheel 4. The handwheel actuator 8 is provided to facilitate more accurate adjustment and control of flow, medium pressure, flow, and temperature. During operation, the handwheel 4 needs to be pulled out to rotate the handwheel 4, which has a certain error prevention function.

[0038] The present embodiment further comprises a handwheel tag hook, which is arranged in the valve cover 2. At the beginning, the handwheel 4 is engaged with the handwheel tag hook. The handwheel 4 can rotate only after it is separated from the handwheel tag hook. The valve cover 2 is provided with a plurality of limit grooves adapted to the rotating ends of the handwheel 4, so that the handwheel 4 is engaged when it rotates to the corresponding position.

[0039] The present embodiment further comprises a spring pad 9 arranged on the outer side of the rack 7, a reset spring 10 is arranged on the spring pad 9, and the other end of the reset spring 10 is arranged on the inner wall at the top end of the valve cover 2. The rack 7 is driven to move upward in coordination with the valve disc 3 by rotating the hand wheel 4, and the liquid collection bottle 8 starts to collect liquid. At this time, the reset spring 10 is in a squeezed state. After the liquid collection bottle completes the liquid collection, the hand wheel 4 is released or pushed forward to release the self-locking function of the hand wheel actuator 8. The reset spring 10 is reset to drive the rack 7 and the valve disc 3 to move downward, and the liquid collection channel is closed.

[0040] In a preferred embodiment, the end of the valve flap 3 is configured as a cone with a larger top and a smaller bottom. This configuration method has a good sealing effect, can eliminate the outlet flow channel, has no sample residue, and reduces pollution to the environment.

[0041] The operation process of this utility model is as follows:

[0042] Pull the handwheel 4 and rotate it counterclockwise. At this time, the handwheel 4 drives the shaft gear 6 to rotate through the handwheel shaft 5. During the rotation of the shaft gear 6, the valve disc 3 is driven to move upward through the rack 7. At this time, the liquid in the valve body 1 will flow into the liquid collection bottle. After the liquid is collected from the liquid collection bottle, the handwheel 4 is released or pushed forward to release the self-locking function of the handwheel actuator 8. The reset spring 10 resets and drives the rack 7 and the valve disc 3 to move downward, closing the liquid collection channel, and the liquid collection is completed.

[0043] It should be noted that the structures not introduced in the present invention do not involve the design points and improvement directions of the present invention, and all adopt the existing technology. At the same time, the content of the above background technology belongs to the technical cognition scope of the utility model inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute the prior art.

[0044] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A valve operating mechanism capable of automatically returning to its original position and locking, characterized in that: include Valve body (1); A valve cover (2) connected to one end of the valve body (1); The valve disc (3) is accommodated in the valve body (1) and the valve cover (2), and the valve disc (3) movably penetrates the upper and lower ends of the valve body (1), and the end of the valve disc (3) is sealed with the valve body (1); A hand wheel (4) is arranged on one side of the valve cover (2); A shaft tooth (5) is disposed in the valve cover (2), and the shaft tooth (5) is connected to the hand wheel (4) via a hand wheel shaft (6); A rack (7) is limitedly arranged in the valve cover (2), and the rack (7) is gear-engaged with the shaft gear (5), and the rack (7) is connected to the valve disc (3); The hand wheel (4) rotates to drive the shaft gear (5) to rotate, and the rack (7) drives the valve disc (3) to move at the upper and lower ends of the valve body (1).

2. The automatic return and lockable valve operating mechanism according to claim 1, characterized in that: Also included is a handwheel actuator (8) connected to the handwheel (4).

3. The automatic return and lockable valve operating mechanism according to claim 1, characterized in that: It also includes a spring washer (9) arranged on the outside of the rack (7), a return spring (10) being arranged on the spring washer (9), and the other end of the return spring (10) being arranged on the inner wall of the top end of the valve cover (2).

4. The automatic return and lockable valve operating mechanism according to claim 1, characterized in that: The end of the valve flap (3) is arranged in a conical shape.

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