KR101736026B1 - Gate valves are equipped with the insert body - Google Patents

Abstract

[0001] The present invention relates to a gate valve that is installed between pipes for transferring fluids and interrupts a fluid to facilitate maintenance. More specifically, the present invention relates to a gate valve for forming an insert hole in a valve body, When the maintenance of performance which is communicated with the flow path of the valve and is deteriorated due to the wear due to the vortex generated as the gate is raised and lowered using the insert body coupled to the insert hole is performed, Disclosed is a gate valve having an insert body that is easy to maintain by replacing only the insert body.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed and will become apparent to those skilled in the art from the following detailed description, By simply replacing the worn insert body, it is possible to obtain an easy maintenance effect, thereby reducing the maintenance cost of the gate valve, simplifying the maintenance work process due to the occurrence of wear and shortening the working time The effect can be obtained.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a gate valve having an insert body,

[0001] The present invention relates to a gate valve that is installed between pipes for transferring fluids and interrupts a fluid to facilitate maintenance. More specifically, the present invention relates to a gate valve for forming an insert hole in a valve body, When the maintenance of performance which is communicated with the flow path of the valve and is deteriorated due to the wear due to the vortex generated as the gate is raised and lowered using the insert body coupled to the insert hole is performed, The present invention relates to a gate valve having an insert body that is easy to maintain by replacing only an insert body.

Generally, a gate valve is a valve that is designed to connect between a pipe and a pipe, and is used to control the flow of fluid through the pipe.

1 shows a conventional gate valve. As shown in FIG. 1, a conventional gate valve has a valve body 11 in which a flow path 17 is formed, a valve body 11 located in the center of the valve body 11 A gate 13 for interrupting the central portion of the flow path 17 through the ascending and descending operation, a stem rod 15 located at the upper portion of the gate 13 and for moving the gate 13 upward and downward, A bonnet 14 that houses the gate 13 and holds the stem rod 15 when the valve body 11 is closed and the gate 13 is lifted or lowered and the bonnet 14 And a gate handle 16 connected to the stem rod 15 passing through the gate 13 and moving up and down the gate 13.

The hermetic member 12 is inserted in the direction of the flow path 17 from the position of the gate 13 located at the center of the valve body 11.

When the gate handle 16 is operated, the ramp 15 is rotated, and the ramp 17 of the gate valve 10 is moved up or down according to the rotating direction, (13) also ascends or descends, so that the flow path (17) inside the valve is interrupted.

Such a gate valve is preferably used at a medium or low pressure due to the characteristic of the gate intermittent structure and is preferably used in a fully closed state or completely closed state for the purpose of interrupting the fluid rather than for the purpose of controlling the flow rate, The flow resistance coefficient is the smallest among the valve types.

As described above, the gate valve is mainly used for piping in which a pressure drop in the valve is small and a flow rate loss due to the valve is small and a constant flow rate must be ensured. Due to the nature of the flow intermittent structure, The flow changes into a vortex, which causes the gate, the hermetic element and the valve body to be worn by the vortex.

In connection with the above, a typical drilling operation provides a drilling mud at high pressure to the drilling bit for lubrication of the drilling bit, which is recovered along with the crumbly debris by the drilling bit, re-supplied to the drilling bit and recycled .

In this process, the flow rate of the drilling mud supplied for smooth lubrication of the excavation bit must be kept constant. Therefore, a gate valve is provided in the pipe to which the drilling mud is supplied in order to secure a constant flow rate.

However, the high-temperature, high-pressure, viscous drilling mud supplied to the inside of the valve body forms a vortex around the gate inside the valve body, and the vortex severely impairs the internal portion of the gate, the hermetic member and the valve body It acts as a cause of wear.

Therefore, the continuous wear of the internal portion of the gate, the hermetic member and the valve body due to the eddy current reduces the sealing effect of the drilling mud by the gate, and in the conventional maintenance work for solving the problem, Or replacing the gate, the hermetic member, and the entire valve body.

At this time, since the replacement work of the valve body can be performed by leaving the inside of the pipe connected to the inlet hole and the discharge hole of the gate valve, troublesome work, increase in maintenance cost due to replacement of the entire valve body, increase in work time, There is a problem in that replacement work is difficult due to the hand loss of the bolt due to the work or the fixation due to the aging of the pipe.

The following are representative conventional techniques for gate valves used in drilling operations.

Korean Patent Laid-Open Publication No. 10-2013-0032794 discloses a knife gate valve. In the knife gate valve, a plurality of packing is used to increase the sealing effect. In addition, the shape of a gate valve that can be used for high- I am suggesting.

However, the above-mentioned conventional technique has not solved the problem of abrasion of the gate valve although the sealing effect has been increased. Also, maintenance work due to wear of the gate, the hermetic member and the valve body due to the eddy current generated during the flow interrupting operation of the valve . Therefore, in using the gate valve, there is a need to simplify the maintenance work of the gate, the hermetic member, and the valve body, which are worn by friction of the fluid, and to reduce the maintenance cost.

Korea Patent Publication No. 2013-0032794

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a gate valve for a valve, There is a problem in that the insert body is installed in the valve body so that only the insert body can be replaced during the maintenance due to the occurrence of the abrasion, The main goal is to provide through.

In order to realize the above object, the present invention provides a valve body having a flow path formed on both sides thereof, an upper portion thereof being opened, an insert hole communicating with the flow path, The insert body has a diameter equal to that of the insert hole and has a gate hole formed in a longitudinal direction so as to communicate with the flow path of the valve body. The insert body is coupled to an upper portion of the insert hole of the valve body. And an opening / closing portion provided at a lower portion of the gate body.

In addition, the insert body of the present invention has an inlet formed at one side to communicate with the gate hole, an outlet formed at the other side to communicate with the gate hole, and a first airtight groove formed at the inside formed with the inlet and an outlet formed at the inside And a second airtight groove, wherein the first airtight groove and the second airtight groove are inserted and joined together, and at least one airtight groove is formed on the outer circumference.

According to another aspect of the present invention, the insert hole includes a protrusion protruding upward from a lower surface of the insert body. The insert body has a recess formed in the lower surface so as to correspond to the projection of the insert hole, And a hooking groove in which at least two are formed on the upper surface and the sealing groove to be formed.

The gate valve having the insert body according to the present invention has the insert body at the main wear portion of the valve body due to the vortex formed inside the valve body, It is possible to obtain an easy maintenance effect, thereby reducing the maintenance cost of the gate valve and simplifying the maintenance work process and shortening the work time due to the occurrence of wear Can be obtained.

1 is a front sectional view showing a conventional gate valve.
2 is an exploded perspective view of a gate valve according to a preferred embodiment of the present invention.
3 is a front sectional view of a gate valve according to a preferred embodiment of the present invention.
4 is a front sectional view of a valve body according to a preferred embodiment of the present invention.
5 is a front sectional view of a valve body to which an insert body according to a preferred embodiment of the present invention is coupled.
6 is a front cross-sectional view of a valve body combined with an insert body and a hermetic member according to a preferred embodiment of the present invention.
7 is a perspective view of an insert body according to a preferred embodiment of the present invention;
8 is a front sectional view of an insert body according to a preferred embodiment of the present invention.
9 is a front sectional view of a hermetic member according to a preferred embodiment of the present invention.
10 is a front sectional view of an insert body according to another embodiment of the present invention.
11 is a plan view of an insert body according to another embodiment of the present invention.

The present invention relates to a gate valve which is disposed between pipes for transferring fluids and interrupts a fluid to facilitate maintenance. More specifically, the present invention relates to a gate valve, in which an insert hole (120) is formed in a valve body (100) And is connected to the flow path 110 of the gate valve and connected to the insert hole 120. The insert body 120 is inserted into the insert hole 120, The present invention relates to a gate valve having an insert body that is easy to maintain by replacing only the insert body 100 instead of replacing the entire valve body 100. [

First, the gate valve according to the present invention is installed between a pipe for transferring a fluid and a pipeline, and is used for interrupting the flow of the fluid. The fluid is flowed inside the gate valve such as a gas, a liquid or a viscous body The drilling mud for drilling will be described in detail below, for example.

The valve body 100 includes a flow passage 110 formed on both sides thereof, an upper portion of which is opened, and an insert hole 120 communicating with the flow passage 110 is formed. The valve body 100 is inserted into the insert hole 120 of the valve body 100 and has a diameter equal to that of the insert hole 120, (200) having an insert body (210); And an opening and closing part 300 coupled to an upper portion of the insert hole 120 of the valve body 200 and including a gate 310 which is lifted and lowered in and out of the gate hole 210 of the insert body 200 .

The insert body 200 according to the present invention includes an inlet 220 formed at one side to communicate with the gate hole 210, an outlet 230 formed at the other side to communicate with the gate hole 210, A first airtight groove 240 formed on an inner side of the second airtight container 220; And a second airtight groove 250 formed on the inner side of the first airtight groove 240 and the discharge port 230. The first airtight groove 240 and the second airtight groove 250 are coupled to each other, And a hermetic member (260) having at least one O-ring groove (262) formed therein.

The insert hole 120 of the present invention includes a protrusion 122 protruding upward from a lower surface of the insert body 120. The insert body 120 has a protrusion 122 A sealing groove 204 formed in the upper and lower portions of the outer periphery, respectively; And a hooking groove (206) in which at least two are formed on the upper surface.

Hereinafter, the present invention will be described in detail with reference to the drawings 2 to 11 showing embodiments of the present invention

The valve body 100, which is a main component for achieving the present invention,

4, a flow path 110 is formed on both sides and an upper portion is opened and an insert hole 120 communicating with the flow path 110 is formed. And a flange is integrally formed or coupled to the outer periphery of both ends so as to facilitate connection with the piping.

In this case, as shown in FIG. 3, the fluid is introduced into one side, that is, the left side, and the fluid is discharged to the other side, that is, the right side.

4, an upper portion of the valve body 100 is opened and an insert hole 120 communicating with the flow path 110 is formed. The insert hole 120 is formed in the valve body 100, The center of the body 100, that is, the center of the flow path 110, and then the insert body 200 is inserted and installed.

Specifically, the insert hole 120 is formed with an inflow hole (not shown) at one side so as to communicate with the flow path 110 and a discharge hole (not shown) at the other side. As shown in FIG. 4, And at least one protrusion 122 protruding upwardly from the bottom surface, that is, the bottom surface.

In this case, the protrusion 122 prevents the insert body 200, which will be described later in detail, from being inserted into the insert hole 120 and rotated laterally, At least one recess 202 corresponding to the protrusion 122 is formed so that the protrusion 122 is coupled to the recess 202 so that the insert body 200 can be stably coupled to the insert hole 120. [ .

4, the insert hole 120 may further include an engagement groove 124 formed in the upper and lower portions of the outer periphery, and the engagement groove 124 may be formed later A sealing member (not shown) coupled to a sealing groove 204 formed at the upper and lower outer edges of the insert body 200 to be referred to is caught so that the insert body 200 is more firmly coupled to the insert hole 120, Thereby realizing an effect of increasing airtightness.

The insert body 200, which is a main component for achieving the present invention,

The valve body 100 is inserted into the insert hole 120 of the valve body 100 and has a diameter equal to that of the insert hole 120, The insert body 120 has a diameter equal to that of the insert hole 120 so that when the insert body 200 is worn thereafter to deteriorate the airtightness of the gate valve, Thereby realizing an easy maintenance effect.

In addition, the insert body 200 of the present invention is provided for facilitating maintenance when the sealing member is worn by the vortex generated as the gate 310 is raised and lowered to degrade the airtightness The insert body 200 is easily separated from the valve body 100 as one or more of the hermetic member 260 or the insert body 200 is worn out So that maintenance can be easily performed.

Specifically, the insert body 200 includes a gate hole 210 formed to penetrate in the longitudinal direction, an inlet 220 formed to communicate with the gate hole 210 at one side, and an inlet 220 formed to communicate with the gate hole 210 at the other side And a second airtight groove 250 formed on the inner side of the first airtight groove 240 and the second airtightness 230 formed on the inner side where the inlet 220 is formed .

The gate hole 210 opens and closes the flow path 110 formed in the valve body 100 by moving up and down the gate 310 of the opening and closing part 300 to be described later.

The inlet port 220 is formed at one side of the insert body 200 so that one side communicates with the flow path 110 and the other side communicates with the gate hole 210. The outlet port 230 communicates with the insert body 200, And one side communicates with the flow passage 110 so that the inlet port 220 and the discharge port 230 are connected to each other when the gate 310 of the opening and closing part 300 is raised When the gate 310 is lowered, the fluid is closed and the movement of the fluid is interrupted.

The first airtight groove 240 and the second airtight groove 250 are formed inside the insert body 200 formed with the inlet 220 and the outlet 230 so that the airtight member 260, Thereby realizing the effect that the airtightness can be maintained when the gate 310 is lowered.

That is, the first airtight groove 240 and the second airtight groove 250 are formed to include the hermetic member 260 which is inserted and joined to the outer circumferential surface and at least one O-ring groove 262 is formed And the hermetic member 260 is coupled to the first airtight groove 240 and the second airtight groove 250 to realize the effect of improving airtightness when the gate 310 is lowered.

9, the airtight member 260 is inserted into the first airtight groove 240 and the second airtight groove 250, and at least one O-ring groove 262 is formed on the outer circumference of the airtight member 260, (Not shown) is coupled to the O-ring groove 262 to increase the coupling force when the hermetic member 260 is coupled to the first hermetic groove 240 and the second hermetic groove 250, At the same time, the effect of improving airtightness is realized.

When the hermetic member 260 is coupled to the first airtight groove 240 and the second airtight groove 250, the airtightness of the first airtight groove 240 and the second airtightness And a fitting protrusion 264 protruding from the inside of the groove 250, that is, toward the outside of the insert body 200.

8, the first airtight grooves 240 and the second airtight grooves 250 are formed on the inner surface of the first airtight grooves 240 and the second airtight grooves 250, respectively, as the fitting protrusions 264 are formed in the airtightness member 260. At this time, The fitting grooves 242 and 252 corresponding to the fitting grooves 264 are formed.

The hermetic member 260 is connected to the first airtight groove 240 and the second airtight groove 250 and is connected to the gate 310 of the gate body 210 of the insert body 200 It is closely attached to both sides. 6, the hermetic member 260 may be coupled to the first airtight groove 240 and the second airtight groove 250 to form a hole 260 of the gate hole 210 of the insert body 200, And are closely contacted with both sides of the gate 310 which is led into the gate hole 210. [

The insert body 120 of the present invention has a groove 202 corresponding to the protrusion 122 protruding upward in the lower surface of the insert hole 120 as described above in the insert hole 120, In other words, the groove 202 is formed so that the protrusion 122 of the insert hole 120 corresponds to the lower surface of the insert body 200, as shown in FIG.

As shown in FIG. 8, the insert body 200 of the present invention further includes a sealing groove 204 formed in the upper and lower portions of the outer periphery. As shown in FIG. 5, The sealing groove 204 is formed in the valve body 100 so as to not only increase the bonding force but also improve the airtightness when the insert body 200 is coupled to the insert hole 120 of the valve body 100 after the sealing member .

In order to minimize abrasion of the sealing member and to increase the coupling force of the insert body 200 to the valve body 100, the valve body 100 of the present invention may include a part of the sealing member, The insert body 200 can be more firmly coupled to the valve body 100, i.e., the insert hole 120, and at the same time, the airtightness can be improved.

10 and 11, the insert body 200 of the present invention may further include a hooking groove 206 formed on the upper surface of the insert body 200, When the insert body 200 or the hermetic member 260 is worn on the hermetic member 260 coupled to the inside of the insert body 100 and the maintenance operation for replacing the insert body 200 or the hermetic member 260 is performed, The insert body 200 can be easily taken out by the user.

The shape and shape of the hooking groove 206 are not limited to those shown in the present invention, and may be any shape and shape that can be formed on the upper surface of the insert body 200 to easily draw the insert body 200 It would be self-evident if formed.

11, the insert body 200 of the present invention may further include a packing groove 208 formed at least one in a direction perpendicular to the outer periphery of the insert body 200, (Not shown) is coupled to the valve body 100 so that the insert body 200 can be more firmly coupled to the valve body 100 and at the same time, the airtightness can be improved.

The opening / closing part 300, which is a main component for achieving the present invention,

A gate 310 which is coupled to an upper portion of the insert hole 120 of the valve body 200 and is lifted and lowered to the gate hole 210 of the insert body 200 is provided at a lower portion of the insert body 120, Similarly, the valve body 200 is closed and the gate 310 is moved up and down to open and close the pipe, that is, the valve body 200.

Specifically, the opening and closing part 300 of the present invention includes a bonnet (not shown) coupled to the upper portion of the insert hole 120 of the valve body 200, a stem rod (not shown) inserted through the bonnet, A gate handle (not shown) coupled to an upper portion of the stem rod, and a gate 310 coupled to a lower portion of the stem by a bearing or the like.

That is, the bonnet closes the upper portion opened by the insert hole 120 of the valve body 100, and the gate handle lifts the stem rod so that the gate 310 coupled to the lower portion of the stem rod moves up and down And the gate 310 is inserted into and discharged from the gate hole 220 of the insert body 200 coupled to the insert hole 120 to open and close the valve body 100.

When the gate 310 is lowered to close the piping, that is, the valve body 100, the lowering of the gate 310 is restricted by the inner groove 130 formed in the lower portion of the valve body 100, Is intended to prevent damage to the valve body 100 and the gate 310 by lowering the gate 310 when the lower portion of the valve body 100 is closed.

That is, the inner groove 130 is formed at the lower portion of the valve body 100, that is, the lower portion of the insert hole 120. The fluid passing through the pipe is naturally filled, and the downward movement of the gate 310 The effect of minimizing damage to the gate 310 and the valve body 100 is realized.

It is preferable that the inner groove 130 is formed to be smaller than the diameter of the insert hole 130 in the lower portion of the insert hole 120. This is because the insert body 120 is formed with the insert body 120, And at the same time, the protrusion 122 mentioned above is formed.

The insert body 120 of the valve body 100 and the insert body 200 to which the hermetic member 260 is coupled are formed in one set structure, 260 and the insert body 200 due to wear of the insert body 200, the operator can reduce the number of operations, thereby achieving an easy maintenance effect .

That is, the insert body 200 of the present invention is preferably formed of a single body so as to facilitate the coupling and separation with the valve body 100, and the hermetic member 260 is firmly coupled to the inside of the insert body 200, The valve body 100 can be stably retained in the valve body 100 even when the valve body 100 vibrates due to fluid movement.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

100: valve body 110: flow path
120: insert hole 122: projection
124: engaging groove 130: inner groove
200: insert body 202: groove
204: sealing groove 206: hooking groove
208: packing groove 210: gate hole
220: inlet 230: outlet
240: first airtight groove 242. 252: fitting groove
250: second airtight groove 260: airtight member
262: O-ring groove 264:
300: opening and closing part 310: gate

Claims (6)

A valve 120 having an insert hole 120 formed at both sides thereof with a flow passage 110 and an upper portion opened and communicating with the flow passage 110 and having protrusions 122 protruding upwardly from a lower surface thereof, A body 100;
The valve body 100 is inserted into the insert hole 120 of the valve body 100 and has a diameter equal to that of the insert hole 120, (200) having an insert body (210); And
And an opening and closing part 300 coupled to an upper portion of the insert hole 120 of the valve body 200 and having a gate 310 at a lower portion thereof to be lifted and lowered into and out of the gate hole 210 of the insert body 200 Respectively,
The insert body (200)
An inlet 220 formed at one side to communicate with the gate hole 210,
An outlet 230 formed on the other side so as to communicate with the gate hole 210;
A first airtight groove 240 formed on an inner side where the inlet 220 is formed;
A second airtight groove 250 formed on the inner side where the discharge port 230 is formed;
A groove 202 formed in the lower surface so as to correspond to the projection 122 of the insert hole 120;
A sealing groove (204) formed in the upper and lower portions of the outer periphery, respectively, and to which the sealing member is coupled; and
A hooking groove (206) in which at least two are formed on the upper surface; And
And a packing groove (208) formed at least one in the vertical direction on the outer periphery and to which the packing is coupled,
The first airtight groove (240) and the second airtight groove (250)
And a hermetic member (260) which is inserted and joined and has at least one O-ring groove (262) formed on its outer periphery,
The insert hole (120)
(124) formed at the upper and lower portions of the outer periphery and coupled to the outside of the sealing member,
An inner groove 130 formed at the lower portion and filled with a fluid passing through the pipe to limit the lowering of the gate 310; Wherein the gate valve is provided with an insert body.
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