KR200246926Y1 - A glove valve - Google Patents

Abstract

The present invention relates to a glove valve, and more specifically, by the bellows installed in the stem in the valve absorbs the compression and expansion due to thermal expansion, such as high temperature oil or cryogenic refrigerant gas to seal the fluid flowing in the valve It prevents leakage of the valve stem by the rotor and guide by preventing the leakage of fluid even if it is used for a long time. It relates to a glow valve that can discharge the correct amount of fluid by checking the opening and closing amount of the.

The glove valve according to the present invention is formed with an inlet (1a) and outlet (1b) and the valve cover (5) is provided on the upper portion of the valve body (1) having a fluid through hole (2) inside, the valve The cover 5 is provided with an opening and closing opening 4 for opening and closing the fluid through hole 2 at the end inserted into the valve body 1 and the handle 10 at the tip protruding upward of the valve cover 5. The installed valve stem 3 is vertically installed, and a gasket 8 is inserted between the upper surface of the valve body 1 and the bottom surface of the valve cover 5 so that the valve stem 3 penetrates. The bellows fixing ring 7 is fixed at a predetermined position of the valve stem 3 inside the body 1, and the bellows 6 is inserted between the bottom of the gasket 8 and the upper surface of the bellows fixing ring 7. In the inside of the boss portion of the handle 10, the outer periphery of the right screw is formed and the inner periphery of the left thread is formed 14 is provided, and the guide 11 marked with the scale 12 is vertically installed on both sides between the lower outer periphery of the rotor 14 and the upper portion of the valve cover 5, and the lower side of the rotor 14. And an indicator 13 in which both ends thereof are guided to the guide 11 is horizontally installed in the valve stem 3 between the valve cover 5 and the upper part of the valve cover 5.

Description

Glove Valve {A glove valve}

The present invention relates to a glow valve, and more specifically, by the bellows installed in the stem of the valve absorbs the compression and expansion due to thermal expansion such as high temperature oil or cryogenic refrigerant gas to seal the fluid flowing in the valve It prevents leakage of the valve stem by the rotor and guide by preventing the leakage of fluid even if it is used for a long time. It relates to a glow valve that can discharge the correct amount of fluid by checking the opening and closing amount of the.

As shown in FIG. 1, a general conventional glove valve is formed such that the inlet 1a and the outlet 1b are formed at both sides, and the fluid flowing through the inlet 1a is discharged to the outlet 1b. A valve body 1 having a fluid passage hole 2 is formed, and a valve cover 5 having a packing 9 inserted therein is installed at an upper portion of the valve body 1, and the valve cover 5 is provided at the valve body 5. It is known that the opening and closing port 4 for opening and closing the fluid passage hole 2 is provided at the end inserted into the valve body 1 and the handle 10 is provided at the front end protruding upward of the valve cover 5. have.

In the conventional glow valve as described above, when the glow valve is used for a long time, the inner periphery of the packing 9 and the outer periphery of the valve stem 3 are repeatedly rubbed in the process of repeatedly raising and lowering the valve stem 3. As the inner circumferential surface of the packing 9 is worn out, a predetermined gap is generated between the inner circumferential edge of the packing 9 and the outer circumferential edge of the valve stem 3, and the inner circumferential surface of the packing 9 is worn as described above. When a gap is formed between the central hole of the valve cover 5, that is, the hole through which the valve stem 3 is installed and the outer periphery of the valve stem 3, a fluid in the valve body 1 is generated. It leaked to the upper side of the valve cover 5 along the clearance gap formed in the outer periphery of 3).

As the fluid leaks from the valve as described above, it pollutes the surrounding environment, and the loss of fluid occurs, and if the leaked fluid is hot oil, toxic drugs, or gas, it is very harmful to human body and surroundings. There was a problem that caused a safety accident.

Therefore, in the case of using a high temperature fluid as described above, in order to absorb the thermal expansion generated by the high temperature fluid and improve the sealing property, the valve direction is formed in the seat in which the valve port is formed The seat portion is provided with elastic material, and the bellows is installed in the flow path having a cylindrical shape inside the seat valve so that the bellows is compressed or elongated to absorb the difference due to thermal expansion and to change the temperature or heat transfer rate. Therefore, it is known to have a stable sealing property.

However, when the bellows is installed to expand and contract in the opening and closing direction of the valve, the bellows attached to the valve stem easily breaks when the handle is rotated many times, and the bellows is detached from the valve stem to achieve the function of the bellows. Not only could there be a problem, there was a problem that could not accurately determine the opening and closing amount of the valve.

The present invention is to solve the conventional problems as described above, the present invention is to install the bellows inside the valve body of the glove valve to absorb the compression and expansion due to thermal expansion, such as high temperature oil or cryogenic refrigerant gas valve Sealing the fluid inside prevents the leakage of the fluid and at the same time rotates the valve handle over many times, it prevents the valve stem from shaking by the rotor and the guide so that the bellows is not easily broken. It is a technical task to check the opening and closing amount of the valve by the indicator so that the correct amount of fluid can be discharged.

In order to solve the technical problem as described above, the present invention is the inlet and outlet is formed and the valve cover is installed on the upper portion of the valve body having a fluid through hole, the end of the valve cover is inserted into the valve body An opening and closing hole for opening and closing the fluid passage hole is installed in the valve stem is installed vertically in the front end of the valve cover protruding upward, the gasket is passed through the valve stem between the upper surface of the valve body and the bottom of the valve cover The bellows fixing ring is fixed to a predetermined position of the valve stem inside the valve body, and a bellows is inserted between the bottom of the gasket and the upper surface of the bellows fixing ring. The right screw is formed in the inner circumference of the rotor is provided with a left screw, the lower side of the rotor Guides marked with scales are installed vertically on both sides between the periphery and the upper part of the valve cover, and indicators at both ends are guided horizontally in the valve stem between the lower side of the rotor and the upper part of the valve cover. .

1 is a cross-sectional view showing a conventional glow valve.

2 is a cross-sectional view showing a glove valve of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view showing a state in which the bellows is bonded to the valve stem.

5 is a cross-sectional view showing another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: Valve body 1a: Inlet 1b: Outlet

2 fluid passage 3 valve stem 4 opening and closing port

5: Valve cover 6: Bellows 7: Bellows fixing ring

8 gasket 9 packing 10 handle

11: Guide 12: Scale 13: Indicator

14: rotor

The present invention for achieving the above object is described in detail with reference to FIGS. 2 to 5 as follows.

Figure 2 is a cross-sectional view showing a glove valve of the present invention, Figure 3 is a cross-sectional view of the AA line of Figure 2, Figure 4 is a cross-sectional view showing a state in which the bellows is bonded to the valve stem, Figure 5 is the present invention It is sectional drawing which shows another Example of.

In the glove valve according to the present invention, the inlet port 1a and the outlet port 1b are formed at both sides, and the valve stem 3 is formed at the center of the upper part of the fluid passage hole 2 formed in the valve body 1. The valve cover 5 is provided in the state which interposed the gasket 8 provided with this through hole.

In addition, the through hole formed in the center of the valve cover 5 is provided with an opening and closing port 4 for opening and closing the fluid through hole 2 in the valve body 1 at the end thereof, and the front end of the valve cover 5 is provided. The valve stem 3 which protrudes upward and the handle 10 is installed is vertically installed.

In addition, the bellows fixing ring 7 is fixed by welding at a predetermined position of the valve stem 3 inside the valve body 1, and between the bottom of the gasket 8 and the upper surface of the bellows fixing ring 7. The bellows (6) is inserted and installed, the area where the bottom of the gasket (8) and the upper portion of the bellows 6 is in close contact with the upper surface of the bellows fixing ring (7) and the lower part of the bellows (6) by welding It is fixed so that the valve stem 3 and the valve cover 5 located in the valve body 1 can be completely sealed.

In addition, a guide 11 having a predetermined length is provided on the scale 12 marked with scales on both sides of the lower outer periphery of the rotor 14 screwed inside the boss portion of the handle 10 and the upper portion of the valve cover 5. It is installed vertically, the inner end of the rotor 14 is coupled to the left end of the valve stem 3, the left end is coupled, both ends of the valve stem 3 between the lower portion of the rotor 14 and the upper portion of the valve cover (5) The indicator 13 guided by the guide 11 is installed horizontally, and the indicator 13 moves up and down as the handle 10 is turned, and the scale 12 indicated by the indicator 13 is moved up and down. It is comprised so that the opening / closing amount of the opening and closing opening 4 can be displayed.

In addition, the glove valve according to another embodiment of the present invention shown in FIG. 5 is the same as the glove valve according to the embodiment of the present invention shown in FIG. Only the packing 9 is inserted into the cover 5, and the packing 9 is not a necessary component. However, when the packing 9 is impregnated with oil, the valve stem 3 may be inserted into the cover 5. The oil impregnated in the packing 9 can move up and down smoothly.

Referring to the working relationship of the present invention is configured as described above are as follows.

The glove valve of the present invention rotates the handle 10 in a state where it is installed in a pipe or a tank through which dangerous fluid such as high temperature oil or cryogenic refrigerant gas flows, and raises the opening and closing opening 4 of the valve body 1 so that the fluid passage hole ( When 2) is opened, the fluid which has been blocked at the inlet port 1a and stopped is introduced into the inner central portion of the valve body 1 at the same time as the fluid passage hole 2 is opened, and the valve body 1 of the valve body 1 The bellows 6 absorbs the difference due to the thermal expansion caused by the temperature difference of the fluid flowing into the center upper side to improve the sealability, and is blocked by the gasket 8 and the one outlet 1b side is open. Is discharged to the discharge port (1b) side.

As described above, the fluid passage hole 2 is opened and at the same time the fluid flowing into the inner central portion of the valve body 1 flows into the inner central portion of the valve body 1 at a predetermined pressure. If there is a small gap in the inner center portion, the gap is raised to the upper side of the valve cover 5, and the glove valve of the present invention has a gasket (8) and a bellows fixing ring (7) inside the valve body (1). In addition, the inner central portion of the valve body 1 is completely sealed by the bellows 6 so that the fluid does not leak to the upper side of the valve cover 5 and is discharged to the entire discharge port 1b.

Then, when the handle 10 is turned, the rotor 14 screwed into the boss portion of the handle 10 rotates together with the handle 10, and the outer circumference of the rotor 14 and the valve cover 5. The guide 11 is installed between the outer periphery of the lower end is fixedly installed on the outer periphery of the valve cover (5), the front end is installed in the non-fixed state and the outer periphery of the rotor 14, the guide 11 is fixed to the rotor (14) rotates only, the inner periphery of the rotor (14) and the tip of the valve stem (3) is coupled to the left side of the screw to try to rotate in the opposite direction in accordance with the rotation of the handle (10) and the rotor (14), Since the guide 13 is guided by the guide 11 to move up and down, the valve stem 3 moves up and down without rotation.

Accordingly, even when the handle 10 of the valve is rotated over a large number of times, only the rotor 14 rotates, and the guide 11 prevents the shaking of the valve stem 3 so that the valve stem 3 is attached to the valve stem 3. Since the bellows 6 is not easily broken, leakage of the fluid is prevented even when used for a long time.

As described above, as the valve stem 3 moves up and down, the indicator 13 installed at a predetermined position on the upper side of the valve stem 3 moves up and down in the same manner, and between the rotor 14 and the upper portion of the valve cover 5. The scale 12, which guides the lifting and lowering of the indicator 13 and shows the opening and closing amount according to the height of the lifting and lowering indicated by the indicator 13, is installed, that is, the lifting amount of the valve stem 3, that is, It is possible to easily check the opening and closing amount of the opening and closing (4) with the naked eye to discharge the correct amount of fluid.

The above design of the glove valve to install a bellows inside the valve body to absorb the compression and expansion caused by thermal expansion such as high temperature oil or cryogenic refrigerant gas to seal the fluid flowing in the valve to block the leakage of fluid Even if the handle of the valve is rotated many times, the rotor and guide prevent the valve stem from shaking and the bellows is not easily damaged. Therefore, even if the valve is used for a long time, the leakage of fluid is completely prevented. By checking the opening and closing amount of the valve by the indicator to move up and down there is an effect that can discharge the correct amount of fluid.

Claims (1)

An inlet port 1a and an outlet port 1b are formed and a valve cover 5 is installed on an upper portion of the valve body 1 having a fluid passage hole 2 therein, and the valve cover 5 is provided with a valve body ( A valve stem 3 having an opening and closing opening 4 for opening and closing the fluid passage hole 2 is installed at an end inserted into 1) and a handle 10 is installed at a tip protruding upward of the valve cover 5. Installed vertically, A gasket 8 is inserted between the upper surface of the valve body 1 and the bottom surface of the valve cover 5 so as to allow the valve stem 3 to pass therethrough, and a predetermined portion of the valve stem 3 inside the valve body 1 is installed. In the bellows fixing ring (7) is fixed to the position, the bellows (6) is inserted between the bottom of the gasket (8) and the upper surface of the bellows fixing ring (7), Inside the boss portion of the handle 10, a right hand thread is formed on the outer periphery and a left hand threaded rotor 14 is provided on the inner periphery. On both sides between the lower outer periphery of the rotor 14 and the upper portion of the valve cover 5, the guide 11 marked with the scale 12 is installed vertically, The valve valve (3) between the lower side of the rotor (14) and the top of the valve cover (5) is provided with an indicator (13) in which both ends are guided to the guide (11) horizontally.