CN110578810A

CN110578810A - Blind valve of pipeline

Info

Publication number: CN110578810A
Application number: CN201910914703.8A
Authority: CN
Inventors: 陆瑾
Original assignee: Xuzhou Jinhong Electric Co Ltd
Current assignee: Xuzhou Jinhong Electric Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2019-12-17

Abstract

The invention discloses a pipeline blind valve, which comprises a valve body, wherein the valve body is respectively provided with an opening at the front side and the rear side. The fixed tube is fixedly disposed on the front side and has a shape inserted into the front-side opening. And a movable pipe provided on the rear side by being inserted into the opening on the rear side, the movable pipe being formed with a screw thread on an outer peripheral surface thereof and being movable in the pipe direction. A shutter is provided between the fixed pipe and the moving pipe to open or block the pipe by moving up or down; a drive assembly, comprising: a gear set engaged with the threads and configured to press the moving tube toward the louver to sealingly fix the moving tube; and a drive unit coupled to the gear set to control a rotational direction of the gear set.

Description

Blind valve of pipeline

Technical Field

the invention relates to a pipeline blind valve. More particularly, the present invention relates to a blind piping valve which can easily open and block a blind window and can seal the blind window with a simple structure.

Background

Normally, a line blind valve is provided at the boundary of the hydrostatic tester of the pipe to block and open the fluid flow in the pipe. In the case of flowing different types of fluids in the connection pipe, it is provided to prevent the fluids from being introduced into each other or to prevent the fluids from being mixed with each other.

As shown in fig. 1, the conventional blind valve is implemented by a conventional blind valve. Fig. 1 is a valve installed between pipes to open or block the pipes, and includes: a valve body 10 formed with opening portions 11 and 12 at front and rear sides thereof, respectively; a front piece 15 formed from the front opening 11 toward the inside of the valve element 10, and a rear piece 16 formed from the rear opening 12 toward the inside of the valve element 10. The blind 20 is disposed between the front sheet 15 and the rear sheet 16, and includes an opening member 21 formed with an opening for opening the pipeline and a blocking member 22 disposed at an upper portion of the opening member 21 to block the pipeline. A moving shaft which rotates by engaging on the surface of the flapper 20 to move the flapper 20 up and down to open and block the pipe. And a gear unit 40 configured to mesh the ring gear 41 with the rear panel 16. Moves forward to press the annular sheet 42 so that the annular sheet 42 presses the blind panel 20 against the front panel 15 to sealingly secure it.

Here, in order to bring the blind plate 20 into close contact with the valve body 10, the gear unit 40 is operated such that the annular plate 42 pushes the blind plate 20 toward the front plate 15, which requires a complicated structure, and thus the manufacturing cost is such that the sealing structure of the blind plate is complicated due to the presence of various components.

Here, the annular piece 42 should be in close contact not only with the blind 20 but also with the rear piece 16, and the annular piece is configured to be movable to the outer peripheral surface of the rear piece so as to ensure mutual sealing, thereby ensuring mutual sealing. Resulting in coupling and configuration complexity.

Therefore, there is a need to develop a blind valve that can solve the above problems.

Disclosure of Invention

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a line blind valve which is capable of sealing a blind plate by tight contact using a simple structure and has a structure configured to be easily spaced apart from a blind.

In order to achieve the above object, the present invention provides a line blind valve, comprising: a valve body formed with openings at a front side and a rear side thereof, respectively; the fixed tube is fixedly disposed on the front side and has a shape inserted into the front-side opening. And a movable pipe provided on the rear side by being inserted into the opening on the rear side, the movable pipe being formed with a screw thread on an outer peripheral surface thereof and being movable in the pipe direction. A shutter is inserted between the fixed pipe and the moving pipe to open or block the pipe by moving up or down. A drive assembly including a gear set engaged with the threads of the moving tube and configured to press the moving tube toward the louver by rotation thereof to sealingly fix the moving tube;

The gear set may include: a ring gear engaged with an outer circumferential surface of the moving tube and having a thread on an inner surface thereof; the lever is disposed on top of the ring gear and connected to the driving unit.

The driving unit may include: a worm gear connected to the handle; a screw shaft rotating together with the worm wheel; the moving nut moves forward and backward by engaging with the screw shaft, and a lower portion thereof is coupled to the lever.

the fixing tube may be integrally provided on the valve body.

According to the present invention configured as described above, the following effects can be expected.

Since the moving pipe allows the structure for sealing the louver by being in close contact with or spaced apart from the louver within the valve body to move in the duct, the louver can be sealed by a simple structure.

Drawings

FIG. 1 is a view showing a conventional blind valve for a piping;

FIG. 2 is a perspective view of a blind pipeline valve according to an embodiment of the present invention;

FIG. 3 is an internal view of FIG. 2;

FIG. 4 is an exploded perspective view showing a blind valve for a pipeline;

FIG. 5 is a view showing a state where the moving pipe is brought into close contact with the blind by advancing in the piping blind valve;

Fig. 6 is a view showing a state in which a moving pipe is spaced apart from a blind by moving backward in a line blind valve.

Detailed Description

hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a perspective view showing a blind pipe valve according to an embodiment of the present invention. And a figure. Fig. 3 is an internal view of fig. 2.

Referring to fig. 3, the blind valve for a pipeline according to the present invention includes a valve body 100, a fixed pipe 200, a moving pipe 300, a louver 400, and a driving assembly 500.

The valve body 100 corresponds to the external appearance of the valve and is formed in a box shape as shown in fig. 2. 1.

The valve body 100 is disposed between pipes with a louver 400 inserted therein to open or block the pipes.

The valve body 100 includes a front flange 110 formed with a front opening and a rear flange 120 formed with a rear opening for connecting pipes, and a louver 300 is disposed therebetween.

The fixing pipe 200 serves to support the front side of the louver 400 from the front opening of the valve body 100, and is formed in a pipe shape inserted in the front opening of the valve body 100. Here, the fixing pipe 200 is integrally formed at the valve bodies 100, 110 of the front flange 110 and fixed thereto.

The moving pipe 300 serves to support the rear side of the louver 400, and is formed in a pipe shape inserted in the rear opening of the valve body 100.

Here, the moving tube 300 is inserted into the rear opening to be movable toward the pipe. Further, a thread 320 is formed on the outer circumference of the moving tube 300, and the thread 320 is formed on the threaded tube 320 due to the thread 320 in fig. 3. Referring to fig. 4, the moving tube 300 may be moved toward the pipeline in conjunction with the operation of the driving assembly 500.

the fixed pipe 200 and the moving pipe 300 are portions inserted into the interior of the valve body 100 to be in close contact with the louver 400. The fixed pipe 200 is fixed, and the moving pipe 300 is configured to move to the rear opening of the valve body 100 to be in close contact with the louver 400.

The louver 400 is disposed between the fixed pipe 200 and the moving pipe 300 to open or block a pipe by moving up or down.

The louver 400 is formed in a plate shape, and is configured such that an upper portion thereof is a closed louver since it is used to block a pipe, and a lower portion thereof is an open louver since a communication hole is formed at a lower portion thereof. Having a size corresponding to the size of the conduit to enable communication therebetween.

The louver 400 is opened by moving upward and closed by moving downward, and the fixed pipe 200 and the moving pipe 300 are in close contact with the front and rear sides of the louver 400, respectively, to prevent fluid leakage.

Further, when the louver 400 is moved, the moving duct 300 should be spaced apart from the louver for convenience of movement, and the moving duct 300 is operated by the driving assembly 500.

The driving assembly 500 includes a gear set 520 and a driver, the gear set 520 being engaged with the threads of the moving tube 300 and configured to press the moving tube 300 toward the louver 400 by rotation thereof to sealingly fix the moving tube 300. A unit 540 coupled to the upper setting 520 of the gear to control the rotational direction setting 520 of the gear.

Fig. 4 is an exploded perspective view showing a blind line valve.

as shown in fig. 4, the gear set 520 includes: a ring gear 522, the ring gear 522 being engaged with an outer circumferential surface of the moving pipe and having a thread on an inner surface thereof. The lever 524 is provided on top of the ring gear 522 to be connected to the driving unit 540.

The driving unit 540 includes: a worm gear 544 connected to the handle 542; and a worm 544. The screw 546 rotates together with the worm gear 544, and the nut 548 moves forward and backward by engaging with the screw 546 and is coupled at its lower portion to the rod 524.

In other words, the moving nut 548 moves along the screw shaft 546 according to the rotating direction of the handle 542, and the moving tube 300 engaged with the ring gear 522 moves forward and backward by rotating the lever 524 connected to the moving member 548. The nut is rotated at a predetermined angle.

Fig. 5 is a view showing a state where the moving pipe is advanced in the piping blind valve to be in close contact with the blind 400. And a figure. Fig. 6 is a view illustrating a state in which the moving pipe is spaced apart from the blind 400 by moving backward in the line blind valve.

Referring to FIG. 5, the shutter 400 is shown opened such that the duct communicates with the opposite side thereof. Here, the gear set 520 is configured to rotate by a predetermined angle such that the moving duct 300 moves forward toward the louver 400 to be in close contact with the louver 400.

As shown in fig. 6, when the gear set 520 rotates in the reverse direction, the moving duct 300 moves backward from the louver 400 to be spaced apart therefrom. Here, since louver 400 can be freely moved up and down, it is possible to switch to a state of shielding louver 400.

Accordingly, the present invention can simply seal the louver without an additional sheet by using a coupling structure configured to bring the moving tube 300 into close contact with or be spaced apart from the louver in the duct.

It will be understood by those skilled in the art that the foregoing description is of a preferred embodiment of the blind line valve and that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

Line blind valve technical field the present invention relates to a line blind valve, which can be applied in the field of line blind valves, which facilitates opening and blocking of a blind plate and can seal the blind plate with a simple structure.

Claims

1. A blind pipeline valve comprising: the valve body (100) has openings at each of the front and rear sides thereof, and a fixing tube (200) is fixedly provided at the front side and inserted into the opening at the front side; a moving pipe (300) which is provided at a rear side and inserted into an opening of the rear side, and which is movable in a direction of the pipe, and which is formed with a thread (320) on an outer circumferential surface thereof; a louver 400 movably provided between the fixed pipe 200 and the moving pipe 300 to open or block a pipe by moving up or down, and a driving assembly (500) including a gear set (520), the gear set (520) engaged with a thread of the movable pipe (300) and configured to press the movable pipe (300) toward the louver (400) by its operation to hermetically fix the movable pipe (300), the moving pipe, and a driving unit (540) coupled to (an upper portion of) the gear set 520 so as to control a rotation direction (520) of the gear set, wherein the gear set (520) includes: a ring gear (522) engaged with an outer circumferential surface of the moving tube and having a thread on an inner surface thereof, a rod (524) disposed on top of the ring gear (522) and connected to a driving unit (540), wherein the driving unit (540) includes: a worm gear (544) connected to the handle (542); and a drive mechanism (540) that rotates together with the worm gear 544, wherein a movable nut 548 is engaged with the screw 546 to move back and forth, and the lower portion thereof is coupled to the rod 524.

2. Pipeline blind valve according to claim 1, wherein the fixed pipe (200) is integrally provided on the valve body (100).

3. Pipeline blind valve according to claim 1, wherein the valve body (100) comprises a front flange (110) to which the fixed pipe (200) is fixed and a rear flange (120) to which the mobile pipe (300) is fixed.