Water-cut-off-free plug stopping device

Abstract

The utility model discloses a non-stop water stop device which comprises a stop plug valve seat pre-sleeving a pipeline and a plate valve mounted on the stop plug valve seat, a sealed cabin is detachably mounted on one side, away from the stop plug valve seat, of the plate valve, and the sealed cabin is communicated with the plate valve; a valve element matched with a pipeline notch is installed in the sealed cabin, and a lifting mechanism used for driving the valve element to move in the direction close to or away from the cutting plug valve seat is installed at the end, away from the plate valve, of the sealed cabin. The pipeline cutting device has the effect of cutting a notch formed by cutting a pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline replacement construction, in particular to a non-stop water plug device. BACKGROUND

[0002] At present, with the continuous increase of the service life of the water supply pipe in the urban water supply network, some long-term pipes will be replaced to ensure the normal water supply of the water supply network. However, when replacing the existing old pipes, the whole pipe needs to be shut down for water treatment, and then the water is reconnected after the replacement is completed. This process will cause trouble to the user's life. Therefore, the old pipe is replaced by the non-stop water method to reduce the impact on the user's life.

[0003] The existing method of replacing the pipe without stopping the water is to first set a plug valve seat at the end of the old pipe to be replaced, then install a plate valve at the opening of the plug valve seat, and then install a pipe cutting machine at the plate valve. When the pipe cutting machine is cutting, the plate valve is opened for cutting, and then the plate valve is closed and the pipe cutting machine is removed. Then connect the temporary water pipe to supply normal water to the user. Then set a plug valve seat on the wall of the cutting position, install a plate valve at the opening of the plug valve seat, and then close the plate valve after cutting by the pipe cutting machine. Finally, the old pipe is replaced smoothly without stopping the water after the cut-out of the pipe is plugged. Therefore, a plug device is needed to complete the above process. SUMMARY

[0004] In order to complete the plugging of the cut-out of the pipe, the present application provides a non-stop water plug device.

[0005] The non-stop water plug device provided by the present application adopts the following technical scheme:

[0006] A non-stop water plug device, comprising a plug valve seat pre-fitted on a pipe and a plate valve installed on the plug valve seat, a sealing cabin being detachably installed on the side of the plate valve away from the plug valve seat, the sealing cabin being in communication with the plate valve; a valve core being installed in the sealing cabin and being adapted to the cut-out of the pipe, and a lifting mechanism being installed at the end of the sealing cabin away from the plate valve and being used to drive the valve core to move towards or away from the plug valve seat.

[0007] By adopting the technical scheme, after cutting, the plate valve is closed, the cutting machine is removed, then the sealing cabin is installed at the end of the plate valve away from the cut-off valve seat, the plate valve is opened, then the lifting mechanism is started to drive the valve core to move towards the cut-off valve seat until the valve core moves to the gap of the pipeline, so that the gap of the pipeline is cut off, and due to the water pressure in the pipeline, the valve core is slightly pushed to the end of the gap away from the temporary water pipe, so that the sealing performance is improved, and the greater the water pressure, the higher the sealing performance; then the old pipeline can be replaced and other operations, the whole process is not only convenient for construction, but also high in overall safety.

[0008] Preferably, the lifting mechanism comprises a shell, a sliding plate, a connecting rod and a driving assembly, the shell is fixedly installed on the sealing cabin, the sliding plate is slidably installed in the shell, one end of the connecting rod is installed on the sliding plate and the other end of the connecting rod extends into the sealing cabin and is installed on the valve core, and the driving assembly is used to drive the sliding plate to slide.

[0009] By adopting the technical scheme, the driving assembly is started to drive the sliding plate to slide in the shell, the valve core is driven to move through the connecting rod, and only one connecting rod in the whole structure is in the sealing cabin full of water, so that the influence on the lifting mechanism is reduced and the practical life is improved.

[0010] Preferably, the driving assembly comprises a pair of lead screws and a driving piece, the two lead screws are located on the two sides of the sliding plate respectively, the lead screws are parallel to the connecting rod, the two ends of the lead screws are rotatably installed on the two ends of the shell respectively, and the thread screw directions of the two lead screws are the same; the two lead screws are both threaded through the sliding plate and are screwed on the sliding plate; and the driving piece is used to drive the two lead screws to rotate in the same direction.

[0011] By adopting the technical scheme, the driving piece is started to synchronously drive the two lead screws to rotate in the same direction, so that the sliding plate is more stably driven to slide in the shell.

[0012] Preferably, the driving piece comprises a rotating rod, the rotating rod is rotatably installed on the top of the shell, and the rotating rod is connected with the two lead screws through a worm gear.

[0013] By adopting the technical scheme, the operator can drive the two lead screws to rotate in the same direction through the linkage action of the worm gear by rotating the rotating rod, which is not only convenient to operate, but also makes the valve core stable at the corresponding position through the self-locking function of the worm gear.

[0014] Preferably, an hand wheel is installed at the end of the rotating rod.

[0015] By adopting the technical scheme, the convenience of rotating the rotating rod can be improved.

[0016] Preferably, the sealing cabin is open at one end away from the plate valve, a sealing plate is arranged at the opening of the sealing cabin, the sealing plate is detachably connected with the sealing cabin, the shell is fixedly installed on the sealing plate, and the connecting rod is arranged through the sealing plate.

[0017] By adopting the above technical scheme, the sealing between the shell and the sealing cabin can be ensured, and the shell and the sealing cabin can be easily detached.

[0018] Preferably, the sealing plate is sleeved with a sealing ring at a position corresponding to the position through which the connecting rod passes.

[0019] By adopting the above technical scheme, the sealing between the shell and the sealing cabin can be improved.

[0020] Preferably, the outer side wall of the valve core is wrapped with a rubber plate.

[0021] By adopting the above technical scheme, the sealing between the valve core and the gap of the pipeline can be improved.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. After cutting is completed, the plate valve is closed, and then the cutting machine is detached; then the sealing cabin is installed at one end of the plate valve away from the plug valve seat, the plate valve is opened, and then the lifting mechanism is started to drive the valve core to move towards the plug valve seat, until the valve core moves to the gap of the pipeline, so that the gap of the pipeline is plugged; and due to the water pressure in the pipeline, the valve core is slightly pushed to one end of the gap away from the temporary water connection, so that the sealing is improved, and the greater the water pressure, the higher the sealing; then the old pipeline can be replaced and other operations, the whole process is not only convenient for construction, but also has high overall safety;

[0024] 2. The driving assembly is started to drive the sliding plate to slide in the shell, so that the valve core is driven to move through the connecting rod, and the overall structure has only one connecting rod in the sealing cabin full of water, thereby reducing the influence on the lifting mechanism and improving the service life;

[0025] 3. The outer side wall of the valve core is wrapped with a rubber plate to improve the sealing between the valve core and the gap of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a sectional view of the overall structure of the embodiment of the present application.

[0027] Figure 2 is a sectional view of the state of driving the valve core to the gap of the pipeline of the embodiment of the present application.

[0028] Figure 3 is Figure 2 is a local enlarged view of A in

[0029] Reference signs:

[0030] 1, cut-off valve seat; 2, plate valve; 3, sealing cabin; 31, sealing plate; 311, sealing ring; 4, valve core; 41, rubber plate; 5, lifting mechanism; 51, shell; 52, sliding plate; 53, connecting rod; 54, screw rod; 55, rotating rod; 56, hand wheel; 101, pipeline gap. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying drawings Figures 1-3 The application is further described in detail.

[0032] The embodiment of the application discloses a water-stop cut-off device. Referring to Figure 1 The water-stop cut-off device comprises a cut-off valve seat 1 and a plate valve 2, the cut-off valve seat 1 is sleeved on a pipeline, and the plate valve 2 is detachably installed on the cut-off valve seat 1 through a flange; a sealing cabin 3 is detachably installed on the side, away from the cut-off valve seat 1, of the plate valve 2 through a flange, and the sealing cabin 3 is in communication with the plate valve 2; a valve core 4 is installed in the sealing cabin 3, the valve core 4 is hollow, the outer side wall of the valve core 4 is wrapped with a rubber plate 41, and the valve core 4 is adapted to the pipeline gap 101; a lifting mechanism 5 is installed at the end, away from the plate valve 2, of the sealing cabin 3, and the lifting mechanism 5 is used for driving the valve core 4 to move towards or away from the cut-off valve seat 1; referring to Figure 2 The dots in the figure schematically indicate water spreading areas, and the arrows in the figure indicate water flow directions; when the valve core 4 is driven to the pipeline gap 101, the valve core 4 is slightly horizontally moved by the water pressure of water flow, abuts against one end of the pipeline gap 101, and seals the end, away from the temporary pipeline, of the pipeline gap 101.

[0033] Referring to Figure 1 and Figure 2 The end, away from the plate valve 2, of the sealing cabin 3 is open, a sealing plate 31 is arranged on the opening of the sealing cabin 3, and the sealing plate 31 is detachably connected with the sealing cabin 3; the lifting mechanism 5 is installed on the side, away from the sealing cabin 3, of the sealing plate 31; the lifting mechanism 5 comprises a shell 51, a sliding plate 52, a connecting rod 53 and a driving assembly, the shell 51 is fixedly installed on the sealing plate 31, and the shell 51 extends towards the sliding direction of the valve core 4; the sliding plate 52 is slidably installed in the shell 51 and extends towards the extending direction of the shell 51; one end of the connecting rod 53 is fixedly installed at the middle position of the sliding plate 52, the other end of the connecting rod 53 is arranged through the sealing plate 31 and fixedly installed on the valve core 4, and the sealing plate 31 is sleeved with a sealing ring 311 (referring to Figure 3 ) at the position, through which the connecting rod 53 is arranged.

[0034] Referring to Figure 2The driving assembly comprises a pair of lead screws 54 and a driving member, the two lead screws 54 are parallel to the connecting rod 53, and the two lead screws 54 are located at two sides of the sliding plate 52, that is, the connecting rod 53 is located between the two lead screws 54, the two ends of the lead screw 54 are rotatably installed at two ends of the shell 51, and the screw thread directions of the two lead screws 54 are the same; the two lead screws 54 are arranged in the sliding plate 52 and are threadedly installed on the sliding plate 52; the driving member is used for synchronously driving the two lead screws 54 to rotate in the same direction, so as to drive the sliding plate 52 to slide; the driving member comprises a rotating rod 55, the rotating rod 55 is rotatably installed at the top of the shell 51, the rotating rod 55 extends towards the connecting line direction of the two lead screws 54, the rotating rod 55 and the two lead screws 54 are connected through a worm gear (not shown in the figure), that is, the worm gear is sleeved on the lead screw 54, the worm is coaxially connected with the rotating rod 55, and the worm gear is engaged with the worm; so that the operator directly rotates the rotating rod 55 to simultaneously drive the two lead screws 54 to rotate in the same direction; the end portion of the rotating rod 55 is fixedly installed with a hand wheel 56, so as to facilitate the rotation of the rotating rod 55.

[0035] The implementation principle of the water-stopping and cutting device is as follows: after cutting is completed, the plate valve 2 is closed, and the cutting machine is removed; then the sealing cabin 3 is installed at the end of the plate valve 2 away from the cutting valve seat 1, the plate valve 2 is opened, and then the operator directly rotates the hand wheel 56 to drive the two lead screws 54 to rotate in the same direction, so as to drive the valve core 4 to move towards the cutting valve seat 1, and the valve core 4 is moved to the gap of the pipeline, so that the gap of the pipeline is cut off.

[0036] The above are preferred embodiments of the application, and are not used to limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A non-water stop device, comprising a stop valve seat (1) pre-fitted in a pipeline and a plate valve (2) installed on the stop valve seat (1), characterized in that, The plate valve (2) is detachably mounted with a sealing cabin (3) away from one side of the cut-off valve seat (1), the sealing cabin (3) is communicated with the plate valve (2); the sealing cabin (3) is mounted with a valve core (4) matched with a pipeline notch (101), and one end of the sealing cabin (3) away from the plate valve (2) is mounted with a lifting mechanism (5) for driving the valve core (4) to move towards or away from the cut-off valve seat (1).

2. A shut-off device according to claim 1, characterized in that The lifting mechanism (5) comprises a shell (51), a sliding plate (52), a connecting rod (53) and a driving assembly, the shell (51) is fixedly installed on the sealing cabin (3), the sliding plate (52) is slidably installed in the shell (51), one end of the connecting rod (53) is installed on the sliding plate (52), the other end of the connecting rod (53) extends into the sealing cabin (3) and is installed on the valve core (4); the driving assembly is used for driving the sliding plate (52) to slide.

3. A shut-off device according to claim 2, characterized in that The driving assembly comprises a pair of lead screws (54) and a driving member, the two lead screws (54) are located on the two sides of the sliding plate (52) respectively, the lead screws (54) are parallel to the connecting rod (53), the two ends of the lead screws (54) are rotatably installed on the two ends of the shell (51) respectively, and the thread screw directions of the two lead screws (54) are the same; the two lead screws (54) are both arranged in the sliding plate (52) and are threadedly installed on the sliding plate (52); the driving member is used for driving the two lead screws (54) to rotate in the same direction.

4. A shut-off device according to claim 3, characterized in that The driving member comprises a rotating rod (55), the rotating rod (55) is rotatably installed on the top of the shell (51), and the rotating rod (55) is connected with the two lead screws (54) through a worm gear.

5. A shut-off device according to claim 4, characterized in that The end of the rotating rod (55) is provided with a hand wheel (56).

6. A shut-off device according to claim 2, characterized in that One end of the sealing cabin (3) away from the plate valve (2) is opened, the sealing cabin (3) is provided with a sealing plate (31) corresponding to the opening, the sealing plate (31) is detachably connected with the sealing cabin (3), the shell (51) is fixedly installed on the sealing plate (31), and the connecting rod (53) is arranged in the sealing plate (31).

7. A shut-off device according to claim 6, characterized in that The sealing plate (31) is provided with a sealing ring (311) corresponding to the position through which the connecting rod (53) passes.

8. The shut-off device of claim 1, wherein, The outer side wall of the valve core (4) is wrapped with a rubber plate (41).

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