CN220320513U - Plugging device - Google Patents

Plugging device Download PDF

Info

Publication number
CN220320513U
CN220320513U CN202320824027.7U CN202320824027U CN220320513U CN 220320513 U CN220320513 U CN 220320513U CN 202320824027 U CN202320824027 U CN 202320824027U CN 220320513 U CN220320513 U CN 220320513U
Authority
CN
China
Prior art keywords
retaining plate
screw
pipeline
groove
shaped clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202320824027.7U
Other languages
Chinese (zh)
Inventor
李志福
李学儒
钱文魁
秋凯
赵岩
李疆
李星亮
尚浩
杜琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Third Construction Co Ltd of China Construction Third Engineering Division
Original Assignee
Third Construction Co Ltd of China Construction Third Engineering Division
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Third Construction Co Ltd of China Construction Third Engineering Division filed Critical Third Construction Co Ltd of China Construction Third Engineering Division
Priority to CN202320824027.7U priority Critical patent/CN220320513U/en
Application granted granted Critical
Publication of CN220320513U publication Critical patent/CN220320513U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Pipe Accessories (AREA)

Abstract

The utility model provides a plugging device which is used for plugging a gap between a pipeline penetrating through a wall body and the wall body, and comprises a shell, a first retaining plate and a second retaining plate; the shell is provided with a mounting part used for being fixed on a wall body, the shell is provided with a first mounting through hole for the pipeline to pass through and in clearance fit with the outer wall of the pipeline, the first retaining plate and the second retaining plate are arranged in a cavity of the shell, one side of the first retaining plate, which is close to the axis of the first mounting through hole, is provided with a first U-shaped clamping groove, one side of the second retaining plate, which is close to the axis of the first mounting through hole, is provided with a second U-shaped clamping groove, the first U-shaped clamping groove and the second U-shaped clamping groove are arc grooves, the notch of the first U-shaped clamping groove and the second U-shaped clamping groove are oppositely arranged, and the shell is provided with a first retaining plate driving mechanism used for driving the first retaining plate to move so that the first U-shaped clamping groove is abutted against or far away from the pipeline, and a second retaining plate driving mechanism used for driving the second retaining plate to move so that the second U-shaped clamping groove is abutted against or far away from the pipeline. The utility model can be reused.

Description

Plugging device
Technical Field
The utility model relates to the technical field of gap blocking between a pipeline and a wall body, in particular to a blocking device.
Background
The cable, oil pipe, air pipe, etc. pass through the wall and floor to form various openings, so that the openings need to be plugged to prevent fire and smoke from spreading through the openings and gaps. The existing plugging mode is to plug rock wool. However, the use of rock wool for plugging has the problem of insufficient tightness. Accordingly, in the prior art, as disclosed in chinese patent (CN 211653234U), a pipe plugging device for optical cable construction is disclosed, which comprises: a sealing bag which is in a vacuum state and can be wound up; the compressed gas cylinder is arranged inside the sealing bag, a structure to be broken for breaking the compressed gas cylinder is arranged on the compressed gas cylinder, and compressed gas is arranged in the compressed gas cylinder. When needing to carry out the pipeline shutoff, wrap up the sealing bag outside the optical cable, and place pipeline mouth department in after, make the compressed gas bottle in the sealing bag break through waiting to break the structure, release the inside compressed gas of compressed gas bottle, after compressed gas pressure release, the gas volume increases, can make the sealing bag quick expansion in order to seal the irregular clearance between optical cable and the pipeline, play the effect of preventing silting, waterproof, protection against insects mouse, not only the simple operation, easy construction, the leakproofness is good, and low cost need not other air supplies and mounting tool, the later stage dismantlement is also comparatively convenient. However, such a pipe plugging device for optical cable construction is removed by breaking the sealing bag to discharge the gas, so that the pipe plugging device for optical cable construction cannot be reused.
Accordingly, there is a need for improvements to existing occlusion devices to allow for reuse of the occlusion device.
Disclosure of Invention
The utility model aims to provide a plugging device which solves the problem that the existing plugging device cannot be reused.
In order to solve the technical problems, the utility model provides a plugging device for plugging a gap between a pipeline penetrating through a wall body and the wall body, which comprises a shell, a first retaining plate and a second retaining plate; the installation department that is used for being fixed to on the wall body is equipped with on the casing, the casing has the confession the pipeline passes and with the pipeline outer wall is clearance fit's first installation through-hole, first keep out the board with the second keeps out the board setting and is in the cavity of casing, first U type draw-in groove has been seted up to one side that first keep out the board is close to first installation through-hole axis, the second keeps out the board and is close to one side of first installation through-hole axis has seted up the second U type draw-in groove, first U type draw-in groove with the second U type draw-in groove is circular arc groove and notch relative setting, be equipped with on the casing and be used for the drive first keep out the board activity so that first U type draw-in groove supports tightly or keeps away from the first keep out the board actuating mechanism of pipeline, and be used for the drive the second keeps out the board activity so that second U type draw-in groove supports tightly or keeps away from the second of pipeline keeps out the board actuating mechanism.
Optionally, when the first U-shaped clamping groove abuts against the pipeline and the second U-shaped clamping groove abuts against the pipeline, a projection of a gap between the pipeline and the wall body along the axial direction of the pipeline is in a projection of the first retaining plate and the second retaining plate along the axial direction of the pipeline.
Optionally, the first board actuating mechanism that keeps out includes first screw rod, the second board actuating mechanism that keeps out includes the second screw rod, first screw rod with the second screw rod respectively with casing threaded connection, the one end of first screw rod with first board that keeps out rotates to be connected and the other end sets up the casing outside, the one end of second screw rod with the second keeps out board and rotates to be connected and the other end sets up the casing outside.
Optionally, the device further comprises a first bearing and a second bearing, wherein the first screw is rotatably connected with the first retaining plate through the first bearing, and the second screw is rotatably connected with the second retaining plate through the second bearing.
Optionally, the device further comprises a sliding rail and a sliding block, wherein the sliding rail is in sliding connection with the sliding block, one of the sliding rail and the sliding block is arranged on the first resisting plate, and the other of the sliding rail and the sliding block is arranged on the second resisting plate.
Optionally, the sliding rail is a sliding groove formed in the first resisting plate, the sliding block is a protrusion formed in the second resisting plate, and the sliding groove is matched with the protrusion.
Optionally, the device further comprises a first tension spring, wherein the first tension spring is arranged on the outer side of the shell and located on the first screw rod, one end of the first tension spring is fixedly connected with the shell, and the other end of the first tension spring is fixedly connected with the first screw rod.
Optionally, the device further comprises a second tension spring, the second tension spring is arranged on the outer side of the shell and located on the second screw, one end of the second tension spring is fixedly connected with the shell, and the other end of the second tension spring is fixedly connected with the second screw.
Optionally, the device further comprises a first driving unit for driving the first screw to rotate and a second driving unit for driving the second screw to rotate, wherein the first driving unit and/or the second driving unit is/are a hand wheel.
Optionally, the wall body further comprises an expansion bolt, and the mounting part is fixed on the wall body through the expansion bolt.
The plugging device provided by the utility model has the following beneficial effects:
because the first U-shaped clamping groove is formed in one side, close to the axis of the first mounting through hole, of the first retaining plate, the second U-shaped clamping groove is formed in one side, close to the axis of the first mounting through hole, of the second retaining plate, the first U-shaped clamping groove and the second U-shaped clamping groove are arc grooves, the notch of the first U-shaped clamping groove is opposite to the notch of the second U-shaped clamping groove, the first retaining plate driving mechanism for driving the first retaining plate to move so that the first U-shaped clamping groove abuts against or is far away from the pipeline, and the second retaining plate driving mechanism for driving the second retaining plate to move so that the second U-shaped clamping groove abuts against or is far away from the pipeline, and the positions of the first retaining plate and the second retaining plate relative to the pipeline can be adjusted; because when first U type draw-in groove supports tightly the pipeline to and the second U type draw-in groove supports tightly the pipeline, first keep out the board with the second keep out the board can be to the shutoff of clearance between pipeline and the wall body, and because the casing has the confession pipeline pass and with the first installation through-hole that is clearance fit with the pipeline outer wall, consequently, the casing can once shutoff to the pipeline, and the casing with first keep out the board, the second keep out the board cooperation forms the labyrinth seal to the pipeline.
Drawings
FIG. 1 is a schematic view of the structure of an occlusion device according to an embodiment of the present utility model;
FIG. 2 is a side view of an occluding device in an embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of a portion of FIG. 1 at A;
fig. 4 is an enlarged partial schematic view of fig. 1 at B.
Reference numerals illustrate:
100-a housing; 110-a mounting portion; 120-expansion bolts; 130-a first mounting via; 200-a first retaining plate; 300-a second retaining plate; 310-a second U-shaped clamping groove; 400-a first screw; 500-a second screw; 610-slide rail; 620-a slider; 700-a first tension spring; 820-handwheels; 910-wall; 920-pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, 2, 3 and 4, fig. 1 is a schematic structural view of a plugging device according to an embodiment of the present utility model, fig. 2 is a side view of the plugging device according to an embodiment of the present utility model, fig. 3 is a partially enlarged schematic view of fig. 1 at a, and fig. 4 is a partially enlarged schematic view of fig. 1 at B, the embodiment providing a plugging device for plugging a gap between a pipe 920 passing through a wall 910 and the wall 910. The plugging device comprises a shell 100, a first retaining plate 200 and a second retaining plate 300; the casing 100 is provided with a mounting portion 110 for being fixed to a wall 910, the casing 100 is provided with a first mounting through hole 130 through which the pipe 920 passes and which is in clearance fit with the outer wall of the pipe 920, the first retaining plate 200 and the second retaining plate 300 are arranged in a cavity of the casing 100, a first U-shaped clamping groove is formed in one side of the first retaining plate 200, which is close to the axis of the first mounting through hole 130, a second U-shaped clamping groove 310 is formed in one side of the second retaining plate 300, which is close to the axis of the first mounting through hole 130, the first U-shaped clamping groove and the second U-shaped clamping groove 310 are arc grooves and are arranged in opposite notches, and the casing 100 is provided with a first retaining plate driving mechanism for driving the first retaining plate 200 to move so that the first U-shaped clamping groove is abutted against or separated from the pipe 920, and a second retaining plate driving mechanism for driving the second retaining plate 300 to move so that the second U-shaped clamping groove 310 is abutted against or separated from the pipe 920.
Because the first U-shaped clamping groove is formed on one side of the first retaining plate 200, which is close to the axis of the first mounting through hole 130, the second U-shaped clamping groove 310 is formed on one side of the second retaining plate 300, which is close to the axis of the first mounting through hole 130, the first U-shaped clamping groove and the second U-shaped clamping groove 310 are both arc grooves and are opposite to each other, the first retaining plate driving mechanism for driving the first retaining plate 200 to move so that the first U-shaped clamping groove is close to or far from the pipeline 920, and the second retaining plate driving mechanism for driving the second retaining plate 300 to move so that the second U-shaped clamping groove 310 is close to or far from the pipeline 920 are formed on the housing 100, and the positions of the first retaining plate 200 and the second retaining plate 300 relative to the pipeline 920 can be adjusted; since the first and second retaining plates 200 and 300 can seal the gap between the pipe 920 and the wall 910 when the first U-shaped groove is abutted against the pipe 920 and the second U-shaped groove is abutted against the pipe 920, and since the housing 100 has the first mounting through-hole 130 through which the pipe 920 passes and which is in clearance fit with the outer wall of the pipe 920, the housing 100 can seal the pipe 920 once, and the housing 100 and the first and second retaining plates 200 and 300 cooperate to form a labyrinth seal for the pipe.
In this embodiment, the housing has a cavity, openings are formed on two opposite sides of the cavity, the opening on one side is the first mounting through hole 130, and the opening on the other side is communicated with the wall 910.
In this embodiment, in a plane perpendicular to the axis of the first mounting through hole, the notches of the first U-shaped slot and the second U-shaped slot are disposed opposite to each other. In the plane parallel to the moving direction of the first retaining plate and the second retaining plate, the notch of the first U-shaped clamping groove and the notch of the second U-shaped clamping groove can be aligned or arranged in a staggered mode.
When the first U-shaped clamping groove abuts against the pipe 920 and the second U-shaped clamping groove abuts against the pipe 920, the projection of the gap between the pipe 920 and the wall 910 along the axial direction of the pipe is within the projection of the first retaining plate 200 and the second retaining plate 300 along the axial direction of the pipe. In this case, the areas of the first and second retaining plates 200 and 300 are larger than the areas of the holes, and the pipe 920 can be blocked by the first and second retaining plates 200 and 300.
The first retaining plate driving mechanism comprises a first screw rod 400, the second retaining plate driving mechanism comprises a second screw rod 500, the first screw rod 400 and the second screw rod 500 are respectively in threaded connection with the shell 100, one end of the first screw rod 400 is rotationally connected with the first retaining plate 200, the other end of the first screw rod is arranged outside the shell 100, one end of the second screw rod 500 is rotationally connected with the second retaining plate 300, and the other end of the second screw rod 500 is arranged outside the shell 100. Because the first screw 400 and the second screw 500 are respectively in threaded connection with the housing 100, one end of the first screw 400 is rotatably connected with the first retaining plate 200, and the other end is disposed at the outer side of the housing 100, one end of the second screw 500 is rotatably connected with the second retaining plate 300, and the other end is disposed at the outer side of the housing 100, therefore, rotating the first screw 400 from the outer side of the housing 100 may cause the first retaining plate 200 to be away from or close to the pipe 920, and rotating the second screw 500 from the outer side of the housing 100 may cause the second retaining plate 300 to be away from or close to the pipe 920.
The plugging device further comprises a first bearing and a second bearing, the first screw 400 is rotatably connected with the first retaining plate 200 through the first bearing, and the second screw 500 is rotatably connected with the second retaining plate 300 through the second bearing. Specifically, the outer ring of the first bearing is fixed to the first retaining plate 200, and the inner ring of the first bearing is fixed to the first screw 400; the outer ring of the second bearing is fixed to the second retaining plate 300, and the inner ring of the second bearing is fixed to the second screw 500. The plugging device further comprises a first limit nut and a second limit nut, the first limit nut and the second limit nut are in threaded connection with the first screw 400, the first limit nut is arranged above the first bearing, and the second limit nut is arranged below the first bearing so as to limit the first bearing to move in the axial direction of the first screw 4200 through the first limit nut and the second limit nut. The plugging device further comprises a third limit nut and a fourth limit nut, the third limit nut and the fourth limit nut are in threaded connection with the second screw 500, the third limit nut is arranged above the second bearing, and the fourth limit nut is arranged below the second bearing so as to limit the second bearing to move in the axial direction of the second screw 500 through the third limit nut and the fourth limit nut.
Referring to fig. 1 and 3, the plugging device further includes a sliding rail 610 and a sliding block 620, the sliding rail 610 is slidably connected with the sliding block 620, one of the sliding rail 610 and the sliding block 620 is disposed on the first abutment plate 200, and the other of the sliding rail 610 and the sliding block 620 is disposed on the second abutment plate 300. The sliding rail and the sliding groove are arranged, so that the first retaining plate and the second retaining plate are tightly matched, and the plugging effect is improved.
In this embodiment, the sliding rail 610 is a sliding groove formed on the first retaining plate 200, the sliding block 620 is a protrusion formed on the second retaining plate 300, and the sliding groove is matched with the protrusion.
Referring to fig. 4, the plugging device further includes a first tension spring 700, the first tension spring 700 is disposed on the first screw 400 outside the housing 100, one end of the first tension spring 700 is fixedly connected with the housing 100, and the other end of the first tension spring 700 is fixedly connected with the first screw 400, so that the first screw 400 is pulled in a direction approaching to the housing 100 by the first tension spring 700, so that the first retaining plate 200 is kept pressed against the pipe 920.
The plugging device further comprises a second tension spring, the second tension spring is arranged on the second screw 500 outside the shell 100, one end of the second tension spring is fixedly connected with the shell 100, and the other end of the second tension spring is fixedly connected with the second screw 500, so that the second tension spring pulls the second screw 500 in a direction close to the shell 100, and the second retaining plate 300 is kept to be pressed against the pipeline 920.
Referring to fig. 4, the apparatus further includes a first driving unit for driving the first screw 400 to rotate, and a second driving unit for driving the second screw 500 to rotate, wherein the first driving unit and/or the second driving unit is a hand wheel 820. Rotation of the first screw 400 may be facilitated by the provision of the handwheel 820 such that the first retaining plate 200 is either closer to or farther from the conduit 920; rotation of the second screw 500 may be facilitated by the provision of the handwheel 820 such that the second retaining plate 300 is either closer to or further from the conduit 920.
The plugging device further comprises an expansion bolt 120, and the mounting portion 110 is fixed on the wall 910 through the expansion bolt 120.
The plugging device is installed as follows:
first, rotating the handwheel 820 moves the first and second retaining plates 200, 300 away from the conduit 920.
Next, a plugging device is placed on the pipe 920 such that the pipe 920 passes through the gap between the first and second retaining plates 200 and 300 and through the hole and is fixed to the wall 910 by the expansion bolts 130.
Again, rotating the hand wheel 820 moves the first abutment plate 200 and the second abutment plate 300 in a direction approaching the conduit 920 until the first abutment plate 200 and the second abutment plate 300 abut against the conduit 920, completing the plugging of the conduit 920.
The disassembly process of the plugging device is as follows:
first, rotating the handwheel 820 moves the first and second retaining plates 200, 300 away from the conduit 920.
Next, the expansion bolts 130 are removed from the wall 910, and the plugging device is removed from the pipe 920, thereby completing the plugging device removal.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims (10)

1. A plugging device for plugging a gap between a pipeline penetrating through a wall body and the wall body, which is characterized by comprising a shell, a first retaining plate and a second retaining plate; the installation department that is used for being fixed to on the wall body is equipped with on the casing, the casing has the confession the pipeline passes and with the pipeline outer wall is clearance fit's first installation through-hole, first keep out the board with the second keeps out the board setting and is in the cavity of casing, first U type draw-in groove has been seted up to one side that first keep out the board is close to first installation through-hole axis, the second keeps out the board and is close to one side of first installation through-hole axis has seted up the second U type draw-in groove, first U type draw-in groove with the second U type draw-in groove is circular arc groove and notch relative setting, be equipped with on the casing and be used for the drive first keep out the board activity so that first U type draw-in groove supports tightly or keeps away from the first keep out the board actuating mechanism of pipeline, and be used for the drive the second keeps out the board activity so that second U type draw-in groove supports tightly or keeps away from the second of pipeline keeps out the board actuating mechanism.
2. The plugging device of claim 1, wherein when the first U-shaped clamping groove abuts against the pipe and the second U-shaped clamping groove abuts against the pipe, a projection of a gap between the pipe and the wall along the axial direction of the pipe is within a projection of the first retaining plate and the second retaining plate along the axial direction of the pipe.
3. The plugging device of claim 1, wherein the first retaining plate driving mechanism comprises a first screw, the second retaining plate driving mechanism comprises a second screw, the first screw and the second screw are respectively in threaded connection with the housing, one end of the first screw is rotatably connected with the first retaining plate, the other end of the first screw is arranged outside the housing, one end of the second screw is rotatably connected with the second retaining plate, and the other end of the second screw is arranged outside the housing.
4. The occlusion device of claim 3, further comprising a first bearing and a second bearing, wherein said first screw is rotatably coupled to said first retaining plate by said first bearing, and wherein said second screw is rotatably coupled to said second retaining plate by said second bearing.
5. The occlusion device of claim 1, further comprising a slide rail and a slider, wherein the slide rail is slidably coupled to the slider, one of the slide rail and the slider is disposed on the first retaining plate, and the other of the slide rail and the slider is disposed on the second retaining plate.
6. The plugging device of claim 5, wherein the sliding rail is a sliding groove formed on the first retaining plate, the sliding block is a protrusion formed on the second retaining plate, and the sliding groove is matched with the protrusion.
7. The occlusion device of claim 3, further comprising a first tension spring disposed on the outer side of the housing on the first screw, and wherein one end of the first tension spring is fixedly connected to the housing and the other end of the first tension spring is fixedly connected to the first screw.
8. The occlusion device of claim 3, further comprising a second tension spring disposed on the outer side of said housing on said second screw, and wherein one end of said second tension spring is fixedly connected to said housing and the other end of said second tension spring is fixedly connected to said second screw.
9. The occlusion device of claim 3, further comprising a first drive unit for driving rotation of said first screw and a second drive unit for driving rotation of said second screw, wherein said first drive unit and/or said second drive unit is a hand wheel.
10. The occlusion device of claim 1, further comprising an expansion bolt, wherein said mounting portion is secured to said wall by the expansion bolt.
CN202320824027.7U 2023-04-14 2023-04-14 Plugging device Active CN220320513U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320824027.7U CN220320513U (en) 2023-04-14 2023-04-14 Plugging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320824027.7U CN220320513U (en) 2023-04-14 2023-04-14 Plugging device

Publications (1)

Publication Number Publication Date
CN220320513U true CN220320513U (en) 2024-01-09

Family

ID=89417582

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320824027.7U Active CN220320513U (en) 2023-04-14 2023-04-14 Plugging device

Country Status (1)

Country Link
CN (1) CN220320513U (en)

Similar Documents

Publication Publication Date Title
CN207296018U (en) The attachment device of shear wall and concrete walls floor in a kind of building structure
CN220320513U (en) Plugging device
CN113685629B (en) Air cooling duct fast connecting structure for air cooling unit
CN112696601B (en) Terminal processing device for wireless communication
CN205136624U (en) Double -valve -clack butterfly valve
CN218094555U (en) Quick-opening pneumatic actuator
CN115671614A (en) Automatic fire extinguishing device for transformer
CN215170687U (en) Hydraulic pump sealing structure for hydraulic station
US4911193A (en) Temporary or permanent blocking of the bore of a pipe
CN204880907U (en) Refrigerant discharging equipment
CN114922989B (en) Electromagnetic type quick coal gas cut-off valve group
CN219698063U (en) Monitoring device
CN219241195U (en) Vortex flow-increasing type smoke exhaust air passage
CN217081660U (en) Fire-fighting pipeline butt joint device used in fire-fighting engineering installation
CN206682070U (en) Hydraulic cylinder
JP5639920B2 (en) Connection member removal method
CN216648964U (en) Low-voltage comprehensive distribution box of cable distribution box
CN220749147U (en) Pressure relief assembly and boiler explosion door
CN218480467U (en) Ship pipeline orifice plate
CN118079293B (en) Antitheft fire hydrant and use method thereof
CN216361979U (en) High-sensitivity combustible gas alarm
CN216799314U (en) Liquid distributor for washing tower
CN220773728U (en) Gas alarm controller convenient to install
CN212871721U (en) Portable subway fire prevention valve debugging fault analysis equipment
CN220668670U (en) Pipeline sealing connection joint

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant