A handle mechanical valve

Abstract

A handle mechanical valve comprises a handle, a main valve body, a valve stem, a rocker, a positioning shaft, a fixed seat, a connecting push rod, a reset spring, and a spring ball plunger, wherein the connecting push rod contacts the first end of the valve stem in the main valve body; the fixed seat is an L-shaped cavity, and the main valve body is fixed inside the lateral end of the L-shaped cavity, and a valve stem is provided in the center of the main valve body, and a rocker is installed inside the vertical end of the L-shaped cavity, and the rocker is flexibly fixed on a positioning shaft, and the positioning shaft is fixed to the vertical end shell of the L-shaped cavity, the upper end of the rocker is fixed to the handle, and the lower end of the rocker is flexibly fixed to one end of the connecting push rod, and the other end of the connecting push rod is fixed to the first end of the valve stem, and the left and right swinging of the rocker moves the connecting push rod to different left and right positions.

Description

Technical Field

[0001] The utility model relates to a structure for opening a valve by mechanically controlling the opening of a handle, which is also a handle mechanical valve structure. Background Art

[0002] Existing handle mechanical valve: The handle mechanical valve is a common type of mechanical valve. It is generally composed of a main valve body, a valve stem (valve core), and a handle. The swing angle of the handle drives the valve stem to control the opening or closing of different passages of the main valve body. It plays the role of controlling the gas circuit switch. However, the valve stem and the handle connecting rod are generally integrated, which requires high processing technology and assembly coordination. In maintenance, the key part valve stem needs to be replaced. There are high requirements for the cost of the product.

[0003] CN202122475458.0 discloses a valve core mechanism, including a handle, a valve stem screw, a lifting nut and a valve core assembly, wherein the valve stem screw is installed on one side of the handle, the lifting nut is sleeved on one end of the valve stem screw and is threadedly matched with the valve stem screw, and the valve core assembly is located at the end of the lifting nut away from the handle and is connected to the lifting nut. When the valve is opened, the overall height of the valve stem will not be increased, and no space needs to be reserved when in use. When the valve is closed, dust and impurities will not be introduced.

[0004] The prior art does not involve any improvement in the structure of the handle mechanically controlling the opening of the valve. Utility Model Content

[0005] The purpose of the utility model is to provide a structure for mechanically controlling the opening of a valve by a handle, also referred to as a handle mechanical valve structure, which requires low cost in processing technology and assembly coordination, is convenient for repairing and replacing key parts such as valve stems, and ensures the accuracy of the control of opening and closing of the valve.

[0006] The technical solution of the utility model is a handle mechanical valve, comprising a handle, a main valve body 8, a valve stem 7, a rocker 4, a positioning shaft 3, a fixed seat 5, a connecting push rod 6, a reset spring 9, and a spring ball plunger 10, wherein the connecting push rod 6 contacts the first end of the valve stem 7 in the main valve body 8; the fixed seat is an L-shaped cavity, the main valve body 8 is fixed inside the lateral end of the L-shaped cavity, a valve stem is provided in the center of the main valve body, a rocker is installed inside the vertical end of the L-shaped cavity, the rocker is flexibly fixed on a positioning shaft, the positioning shaft is fixed to the vertical end shell of the L-shaped cavity, the upper end of the rocker is fixed to the handle, the lower end of the rocker is flexibly fixed to one end of the connecting push rod, the other end of the connecting push rod is fixed to the first end of the valve stem, and the left and right swing of the rocker moves the connecting push rod to different left and right positions.

[0007] The dustproof rubber sleeve is used to seal the lower edge of the handle and the upper part of the vertical end of the L-shaped cavity of the fixed seat; the second end of the valve stem can contact a return spring;

[0008] The lower end of the rocker and one end of the connecting rod are fixed in a flexible manner as follows: a groove is made on the connecting rod, and the rocker is inserted into the groove or the lower end of the rocker and one end of the connecting rod are pin-shaped; a hole is made in the fixing seat 5, and a plunger is installed in the hole to fix the connecting rod. If the plunger is a spring ball plunger, and holes are made on both sides of the fixing seat 5, it is easier to install, and recessed holes are provided on both sides of the connecting rod to accommodate the spring ball plungers inserted into the holes on both sides.

[0009] The valve stem is continuous in the main valve body, the position of the valve stem in the main valve body controls the valve core and the flow channel, and the shell of the main valve body is provided with a fluid inlet and outlet connected with the valve core.

[0010] The working principle of the mechanical valve of the present application is as follows: the main valve body controls the switching or cutting off of the fluid passage (such as gas passage, liquid passage) by the different movement positions of the valve stem. The valve stem performs linear reciprocating motion inside the main valve body, and the handle mechanical valve performs linear reciprocating motion on the valve stem through the dual action of the connecting push rod and the return spring when the handle reciprocates at a certain angle.

[0011] Beneficial effects: The handle mechanical valve structure of the utility model has low requirements and low cost in terms of processing technology and assembly coordination. It is also convenient to repair and replace the key parts of the valve stem, and the accuracy of the control of the opening and closing position of the valve is guaranteed. The valve stem is driven by the swing angle of the handle to control the opening or closing of different passages of the main valve body or to conduct a certain flow channel. It plays the role of controlling the switch of the gas circuit, liquid circuit, etc. The requirements of the utility model in terms of processing technology and assembly coordination are very easy to achieve, and it is also convenient to replace the key parts during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of a stop valve according to an embodiment of the utility model.

[0013] Figure 2 for Figure 1 Schematic diagram of the structure from above.

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of the lower end of the rocker shown in two positions. DETAILED DESCRIPTION

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

[0016] See also Figure 1 to Figure 2The technical solution embodiment provides a handle mechanical valve, including a handle, a main valve body 8, a valve stem 7, a connecting push rod 6 and a rocker 4, a positioning shaft 3, a fixing seat 5, a reset spring 9, and a spring ball plunger 10. The connecting push rod 6 contacts (or is fixed by a screw nut) one end of the valve stem 7 in the main valve body 8; the fixing seat is an L-shaped cavity, and the main valve body 8 is fixed inside the lateral end of the L-shaped cavity. A valve stem is arranged in the center of the main valve body, and a rocker is installed inside the vertical end of the L-shaped cavity. The center of the rocker can be fixed on a positioning shaft in a flexible and rotatable manner. The positioning shaft (playing the role of a pin shaft) is fixed to the outer shell of the vertical end of the L-shaped cavity. The upper end of the rocker is movably fixed to the handle (can be directly connected, screwed or slotted, etc.), and the lower end of the rocker is flexibly fixed to one end of the connecting push rod (such as Figure 3 The handle is inserted into the groove at the end of the connecting rod), the other end of the connecting rod is fixed to the first end of the valve stem, and the left and right swing of the rocker moves the connecting rod to different left and right positions. Since the handle swings around the positioning axis to control the main valve body, there is a full-length valve stem on the main valve body, and the main valve body is fixed in the fixed seat and does not move. The valve stem will drive the valve core assembly to move at different positions to form a fluid passage or a corresponding circuit breaker. The main valve body is provided with an inlet and outlet for the fluid. The horizontal end of the L-shaped cavity and the vertical end of the L-shaped cavity can be integrated into a structure by welding or other methods.

[0017] The main valve body and the valve stem are connected to the valve core control of the main valve body and are located inside one lateral end of the L-shaped cavity;

[0018] The plunger (or an elastic ball, which can be positioned at the corresponding recessed hole 12 on the connecting push rod 6, and the elastic ball is relatively fixed and disengaged from the recessed hole) adopts a spring ball head plunger, which is inserted into the openings 11 on both sides of the fixing seat 5, and holes are provided on both sides of the connecting push rod for accommodating the spring ball head plungers inserted into the openings on both sides.

[0019] The dustproof rubber sleeve is used to seal the lower edge of the handle and the upper part of the vertical end of the L-shaped cavity of the fixed seat. The rubber sleeve is elastic and flexible, which can keep the handle sealed when it moves, and does not affect the movement of the rocker around the positioning axis.

[0020] The second end of the valve stem can contact a return spring; the lower end of the rocker and one end of the connecting rod are flexibly fixed in the following manner: a groove is formed on the connecting rod, and the rocker is inserted into the groove or the lower end of the rocker and one end of the connecting rod are in the form of a positioning shaft; a hole is formed in the fixing seat 5, and a plunger is installed in the hole to fix the connecting rod. If the plunger adopts a spring ball plunger and holes are formed on both sides of the fixing seat 5, it is easier to install, and recessed holes are formed on both sides of the connecting rod to accommodate the spring ball plunger inserted into the holes on both sides.

[0021] Handle swing ( Figure 1 , 3When the valve stem is moved left or right in the main valve body, at least two positions (or three positions) of the valve stem are controlled in the main valve body, such as opening or closing the valve (for stop valve); or when it is used for a three-position two-way valve, the main valve body has the first and second ports connected or the first and third ports connected when the valve core is in different positions.

[0022] The handle mechanical valve includes: a main valve body 8, a valve stem 7, a connecting push rod 6 and a rocker 4, a handle, a dustproof rubber sleeve, a positioning shaft 3, a fixed seat 5, a connecting push rod 6, a reset spring 9, and a spring ball plunger 10. The connecting push rod 6 contacts one end of the valve stem 7 in the main valve body 8; the fixed seat is an L-shaped cavity, and the main valve body 8 is fixed inside the lateral end of the L-shaped cavity. A valve stem is provided in the center of the main valve body, and a rocker is installed inside the vertical end of the L-shaped cavity. The rocker is flexibly fixed on a positioning shaft, and the positioning shaft is fixed to the vertical end shell of the L-shaped cavity. The upper end of the rocker is fixed to the handle, and the lower end of the rocker is flexibly fixed to one end of the connecting push rod. The other end of the connecting push rod is fixed to the valve stem, and the left and right swing of the rocker moves the connecting push rod to different left and right positions.

[0023] The main valve body 8 can be a general valve structure such as a stop valve, a reversing valve, etc.;

[0024] The lower end of the rocker and one end of the connecting rod are fixed in a flexible manner as follows: a groove is made on the connecting rod, and the rocker is inserted into the groove or the lower end of the rocker and one end of the connecting rod are pin-shaped; a hole is made in the fixing seat 5, and a plunger is installed in the hole to fix the connecting rod. If the plunger is a spring ball plunger, and holes are made on both sides of the fixing seat 5, it is easier to install, and recessed holes are provided on both sides of the connecting rod to accommodate the spring ball plungers inserted into the holes on both sides.

[0025] The valve stem 7 can be full length, and the valve stem 7 in the return spring 9 and the main valve body 8 controls the valve core. The shell of the main valve body 8 is provided with a fluid inlet and outlet connected to the valve core; the main valve body controls the switching or cutting off of the fluid passage (such as the gas path and the liquid path) by the different movement positions of the valve stem. The valve stem performs linear reciprocating motion inside the main valve body, and the handle mechanical valve performs linear reciprocating motion on the valve stem through the connection of the push rod and the return spring when the handle swings back and forth at a certain angle.

[0026] The valve stem length is used for mechanical valves such as two-position three-way, two-position five-way, two-position four-way, etc. The same set of connecting rods can be used, which greatly improves the adaptability of parts.

[0027] The rocker and connecting rod are heat treated to increase the hardness, wear resistance and mechanical strength of the parts, greatly improving the service life of the product; in the above scheme, the connecting rod and the valve stem belong to the separate free connection guide (coordination between the shaft and the hole), and the improvement direction is: the connecting rod is processed with external threads, and the valve stem is processed with internal threads. The two parts can be connected by threads.

[0028] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Without departing from the purpose and spirit of the utility model, any changes, modifications and other changes to the application are within the protection scope of the utility model.

Claims

1. A handle mechanical valve, characterized in that: It includes a handle, a main valve body, a valve stem, a rocker, a positioning shaft, a fixed seat, a connecting push rod, a reset spring, and a spring ball plunger, wherein the connecting push rod contacts the first end of the valve stem in the main valve body; the fixed seat is an L-shaped cavity, and the main valve body is fixed inside the lateral end of the L-shaped cavity, and a valve stem is provided in the center of the main valve body, and a rocker is installed inside the vertical end of the L-shaped cavity, and the rocker is flexibly fixed on a positioning shaft, and the positioning shaft is fixed to the vertical end shell of the L-shaped cavity, the upper end of the rocker is fixed to the handle, the lower end of the rocker is flexibly fixed to one end of the connecting push rod, and the other end of the connecting push rod is fixed to the first end of the valve stem, and the left and right swing of the rocker moves the connecting push rod to different left and right positions.

2. The handle mechanical valve according to claim 1, characterized in that: A dustproof rubber sleeve is provided, and the dustproof rubber sleeve is used for sealing the lower edge of the handle and the upper part of the vertical end of the L-shaped cavity of the fixing seat.

3. The handle mechanical valve according to claim 1, characterized in that: The second end of the valve stem contacts a return spring.

4. The handle mechanical valve according to claim 1, characterized in that: The lower end of the rocker arm and one end of the connecting push rod are flexibly fixed in the following manner: a groove is formed on the connecting push rod, the rocker arm is inserted into the groove, or the lower end of the rocker arm and one end of the connecting push rod are in a pin-shaft manner; a hole is formed in the fixing seat, and a plunger is installed in the hole to fix the connecting push rod.

5. The handle mechanical valve according to claim 1, characterized in that: The valve stem is continuous in the main valve body, the position of the valve stem in the main valve body controls the valve core and the flow channel, and the shell of the main valve body is provided with a fluid inlet and outlet connected with the valve core.

6. The handle mechanical valve according to claim 1, characterized in that: The plunger adopts a spring ball head plunger which is installed from the openings on both sides of the fixing seat. Both sides of the connecting push rod are provided with concave holes for accommodating the spring ball head plungers inserted into the openings on both sides.

Images