CN218819670U - Sewage drainage pipeline infiltration detection device - Google Patents

Sewage drainage pipeline infiltration detection device Download PDF

Info

Publication number
CN218819670U
CN218819670U CN202222394758.0U CN202222394758U CN218819670U CN 218819670 U CN218819670 U CN 218819670U CN 202222394758 U CN202222394758 U CN 202222394758U CN 218819670 U CN218819670 U CN 218819670U
Authority
CN
China
Prior art keywords
air
pipeline
detection device
pipe
cavity
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
CN202222394758.0U
Other languages
Chinese (zh)
Inventor
林劭
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.)
Ningbo Lvqin Ecological Technology Co ltd
Original Assignee
Ningbo Lvqin Ecological Technology Co ltd
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 Ningbo Lvqin Ecological Technology Co ltd filed Critical Ningbo Lvqin Ecological Technology Co ltd
Priority to CN202222394758.0U priority Critical patent/CN218819670U/en
Application granted granted Critical
Publication of CN218819670U publication Critical patent/CN218819670U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Sewage (AREA)

Abstract

The utility model discloses a sewage drainage pipeline water seepage detection device, which aims to provide a sewage drainage pipeline water seepage detection device with simple structure, convenient operation, detection result and accurate water seepage position judgment, and the technical scheme is characterized in that the device comprises two buoyancy units, the two buoyancy units are respectively provided with air bags, the air bags are connected with a first inflation and deflation pipeline, the two buoyancy units are arranged at the inner side of a pipe section to be detected in a way of matching with the flow direction of a sewage pipe, the first inflation and deflation pipeline is inflated with gas to expand the two air bags to be attached to the inner side wall of the pipe section to be detected to be airtight, so as to form a cavity between the two air bags at the inner side of the pipe section to be detected; the two buoyancy units are matched with the cavity and provided with air nozzles and air pressure sensors, the air nozzles are connected with a second air charging and discharging pipeline, the air pressure sensors are electrically connected with a display unit, and air is introduced into the cavity through the air nozzles by the second air charging and discharging pipeline; the utility model discloses be suitable for pipeline detection device technical field.

Description

Sewage drainage pipeline infiltration detection device
Technical Field
The utility model relates to a pipeline detection device technical field more exactly relates to a sewage drainage pipe infiltration detection device.
Background
At present, with the increase of population and the expansion of cities, the using amount of water is larger and larger, and the discharge amount of sewage is increased day by day; because the water seepage detection device suitable for the residential sewage pipeline is lacked, when water seepage needs to be detected, whether water body leaks out can be observed only through manpower to judge whether water seepage occurs, a series of problems that the result accuracy is low, the water seepage position is not convenient to determine, the operation is complex and the like exist, and the water seepage detection device suitable for the residential sewage pipeline is needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the sewage drainage pipeline water seepage detection device has the advantages of simple structure, convenience in operation, detection result and accurate judgment of the water seepage position.
In order to achieve the above object, the present invention provides the following technical solutions.
A sewage drainage pipeline water seepage detection device comprises two buoyancy units, wherein the two buoyancy units are respectively provided with air bags, the air bags are connected with a first inflation and deflation pipeline, the two buoyancy units are arranged on the inner side of a pipe section to be detected in a way of matching with the flow direction of a sewage pipe, the first inflation and deflation pipeline is filled with gas to inflate the two air bags to be attached to the inner side wall of the pipe section to be detected in a closed way, so that a cavity is formed between the two air bags on the inner side of the pipe section to be detected;
two buoyancy unit cooperation cavity is provided with air cock and baroceptor, the air cock is connected with the second and fills the gassing pipeline, the baroceptor electricity is connected with the display element, the second fills the gassing pipeline and lets in gas to the cavity through the air cock, baroceptor monitoring cavity atmospheric pressure changes and feeds back to the display element.
After the structure above adopting, the utility model discloses a sewage drainage pipe infiltration detection device compares with prior art, has following advantage: put into the pipeline section one by one buoyancy unit in proper order, and make the flow direction of two buoyancy units cooperation sewage pipes arrange the setting, it is airtight to expand two gasbags to with the laminating of pipeline section inside wall to let in gas at first inflation and deflation passageway, can wait to detect and form the cavity between two gasbags of pipeline section inboard, further second inflation and deflation pipeline lets in gas to the cavity through the air cock and pressurizes to the cavity, pressurization finishes back baroceptor monitoring cavity atmospheric pressure and changes and feed back to display element, the user observes pressure variation through display element, the atmospheric pressure finishes at the pressurization in the cavity, pressure if there is the problem that this pipeline section exists the infiltration of judgement if there is reduction, pressure does not change then the problem that this pipeline section does not exist the infiltration.
In the improvement, the air pressure sensor is used for monitoring whether the pressure of the pressurized cavity changes or not so as to judge whether water seepage occurs or not, and the air pressure sensor has the characteristics of accurate and reliable water leakage detection results; in addition, the device has the characteristics of less parts, simple structure and high reliability; meanwhile, the device has the characteristics of being beneficial to miniaturization of the device, convenient for practical operation and relatively low in manufacturing cost.
As an improvement of the utility model, a connecting piece is arranged between two buoyancy units, the connecting piece connects two buoyancy units. Above-mentioned improvement sets up the connecting piece with two buoyancy unit mutual stabilization's connection, has made things convenient for the user to operate, avoids buoyancy unit to break away from and waits to detect the pipeline section, hoisting device's reliable degree.
As an improvement of the utility model, the buoyancy unit includes two pontoons that set up with the axle center, and the intermediate position of two pontoons passes through the connecting pipe to be connected, the connecting pipe periphery is provided with the mounting groove that supplies the gasbag cover to establish. In the improvement, the buoyancy unit adopts two coaxial buoys, so that the buoyancy of the device is improved, and the device is prevented from sinking into a water body; the air bag is sleeved in the mounting groove of the connecting pipe between the two floating barrels, so that the structural layout is reasonable and compact, and the miniaturization of the device is facilitated.
As an improvement of the utility model, the valve inside is worn to be equipped with by one side pipe wall of connecting pipe, the gasbag is inboard in arranging in to the delivery outlet of valve inside, the connecting pipe is inboard in being arranged in to the input port of valve inside. The improvement has the characteristics of reasonable and compact structural layout.
As an improvement of the present invention, the maximum diameter of the two buoys is larger than the maximum diameter of the air bag in the retraction state, so as to form the accommodation gap of the accommodation air bag between the end faces of the two buoys. According to the improvement, when the air bag is not inflated, the air bag is located in the accommodating gap of the concave structure, the buoy can reduce the contact between the air bag and a foreign object, the reliability of the device is improved, and the service life of the device is prolonged.
As an improvement of the utility model, the first gassing pipeline that fills penetrates to the inboard from the bottom terminal surface that is located the flotation pontoon of tail end to extend to and pass the connecting pipe inboard that is located the tail end in proper order and be located the connecting pipe inboard of front end respectively with the input connection of two valve cores. Above-mentioned improvement, place the first sewage pipe of aerifing in the inboard cavity of part structure, avoid the first sewage pipe of aerifing to leak outward, reduce it and foreign object contact in the use, effectively reduce wearing and tearing, increase of service life does benefit to the miniaturization of device simultaneously.
As an improvement of the utility model, the connecting piece adopts the bellows to the bellows inboard is provided with the inner chamber that supplies first fill and discharge pipeline to pass. The improvement adopts the corrugated pipe as the connecting piece, and when in use, the corrugated pipe can be properly bent aiming at the position of a pipe section (such as an elbow and the like) with a bending degree so as to lead the device to enter the pipe section needing to be detected, thereby improving the applicability of the device; in addition, the first charging and discharging pipeline penetrates through the inner cavity of the corrugated pipe to enter the buoy at the front end, so that the first charging and discharging pipeline is prevented from leaking, the contact between the first charging and discharging pipeline and a foreign object in the use process is reduced, the abrasion is effectively reduced, the service life is prolonged, and meanwhile, the structural layout is reasonable, and the miniaturization of the device is facilitated.
As an improvement of the present invention, the air faucet and the air pressure sensor are disposed on the upper end face of the float bowl located at the front end of the tail airbag. According to the improvement, the positions of the air nozzle and the air pressure sensor are located on the axial end face side of the inner side floating barrel, when the device is moved, the floating barrel contacts with a foreign object to play a supporting role, the air nozzle and the air pressure sensor are suspended, the contact between the air nozzle and the foreign object is reduced, the structural layout is reasonable, the abrasion is effectively reduced, and the service life is prolonged.
As an improvement of the utility model, the second fills the gassing pipeline and penetrates to the inboard from the bottom terminal surface that is located the flotation pontoon of tail end to extend to and pass the connecting pipe inboard and be connected with the air cock. Above-mentioned improvement aerifys the sewage pipe with the second and arranges the inner chamber of device in, reduces the second and aerifys the sewage pipe and leak outward, makes structural layout reasonable, effectively avoids the second to aerify the sewage pipe and receives wearing and tearing, has prolonged life.
Drawings
Fig. 1 is a schematic sectional view of the sewage pipe inspection device of the present invention.
Fig. 2 is an enlarged schematic view of a structure in fig. 1 of the present invention.
Fig. 3 is an enlarged schematic view of the structure B in fig. 1 of the present invention.
Fig. 4 is a schematic structural diagram of the present invention.
Shown in the figure: 1. a buoyancy unit; 1.1, a buoy; 2. an air bag; 3. a first inflation/deflation conduit; 4. a sewage pipe; 5. an air tap; 6. an air pressure sensor; 7. a connecting member; 8. a connecting pipe; 8.1, mounting grooves; 9. a valve core; 10. a second inflation/deflation line; 11. a display unit; 12. a waterproof joint.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1-4, the utility model discloses a sewage drainage pipe infiltration detection device with simple structure, convenient operation, accurate detection result and infiltration position determination.
In order to achieve the above object, the present invention provides the following technical solutions.
A sewage drainage pipeline water seepage detection device comprises two buoyancy units 1, wherein the two buoyancy units 1 are respectively provided with an air bag 2, the air bags 2 are connected with a first inflation and deflation pipeline 3, the two buoyancy units 1 are arranged on the inner side of a pipe section to be detected in a way of matching with the flow direction of a sewage pipe 4, the first inflation and deflation pipeline 3 is inflated with air to expand the two air bags 2 to be attached to the inner side wall of the pipe section to be detected and closed, so that a cavity is formed between the two air bags 2 on the inner side of the pipe section to be detected;
two buoyancy unit 1 cooperation cavities are provided with air cock 5 and baroceptor, and air cock 5 is connected with the second and fills gassing pipeline 10, and the baroceptor electricity is connected with display element 11, and the second fills gassing pipeline 10 and lets in gas to the cavity through air cock 5, and baroceptor monitoring cavity atmospheric pressure changes and feeds back to display element 11.
Will be in proper order buoyancy unit 1 puts into the pipeline section one by one, and make the flow direction of two buoyancy units 1 cooperation sewage pipe 4 arrange the setting, it is airtight to expand two gasbags 2 to be airtight with the laminating of pipeline section inside wall to let in gas at first inflation and deflation passageway, can wait to detect and form the cavity between two gasbags 2 of pipeline section inboard, further second inflation and deflation pipeline 10 lets in gas to the cavity through air cock 5 and pressurizes to the cavity, the pressurization finishes the back baroceptor and monitors the change of cavity atmospheric pressure and feed back to display element 11, the user of service observes the pressure change through display element 11, the atmospheric pressure finishes at the pressurization in the cavity, pressure if there is the problem that this pipeline section exists the infiltration of judgement, pressure does not change then there is not the problem of infiltration in this pipeline section.
In the improvement, the air pressure sensor is used for monitoring whether the pressure of the pressurized cavity changes or not so as to judge whether water seepage occurs or not, and the water seepage monitoring method has the characteristics of accurate and reliable water seepage monitoring result; in addition, the device has the characteristics of less parts, simple structure and high reliability; meanwhile, the device has the characteristics of being beneficial to miniaturization of the device, convenient for actual operation and relatively low in manufacturing cost.
Referring to fig. 1, 2 and 4, a connecting member 7 is disposed between the two buoyancy units 1, and the connecting member 7 connects the two buoyancy units 1. Above-mentioned improvement sets up the connection of connecting piece 7 with two buoyancy unit 1 mutual stabilities, has made things convenient for the user to operate, avoids buoyancy unit 1 to break away from and waits to detect the pipeline section, hoisting device's reliable degree.
The buoyancy unit 1 comprises two coaxial buoys 1.1, the middle positions of the two buoys 1.1 are connected through a connecting pipe 8, and a mounting groove 8.1 for the air bag 2 to be sleeved is formed in the periphery of the connecting pipe 8. According to the improvement, the buoyancy unit 1 adopts two coaxial buoys 1.1, so that the buoyancy of the device is lifted, and the device is prevented from sinking into a water body; the air bag 2 is sleeved in the mounting groove 8.1 of the connecting pipe 8 between the two buoys 1.1, so that the structural layout is reasonable and compact, and the miniaturization of the device is facilitated.
The valve core 9 is arranged on the pipe wall of one side of the connecting pipe 8 in a penetrating way, the output port of the valve core 9 is arranged on the inner side of the air bag 2, and the input port of the valve core 9 is arranged on the inner side of the connecting pipe 8. The improvement has the characteristics of reasonable and compact structural layout.
The maximum diameter of the two buoys 1.1 is greater than the maximum diameter of the air bag 2 in the retracted state, so that a receiving gap for receiving the air bag 2 is formed between the end faces of the two buoys 1.1. Above-mentioned improvement, when gasbag 2 does not aerify it is located the holding clearance of indent structure, flotation pontoon 1.1 can reduce the contact of gasbag 2 and foreign object, promotes device's reliability, increase of service life.
Referring to fig. 1, 2 and 3, the first inflation/deflation pipeline 3 penetrates from the bottom end surface to the inside of the buoy 1.1 at the tail end, and extends to sequentially penetrate through the inside of the connecting pipe 8 at the tail end and the inside of the connecting pipe 8 at the front end to be respectively connected with the input ports of the two valve cores 9. Above-mentioned improvement, place first sewage pipe 4 of aerifing in the inboard cavity of part structure, avoid first sewage pipe 4 of aerifing to leak outward, reduce it and foreign object contact in the use, effectively reduce wearing and tearing, increase of service life does benefit to the miniaturization of device simultaneously.
Referring to fig. 1-4, the connecting member 7 is a bellows, and an inner side of the bellows is provided with an inner cavity for the first inflation/deflation pipe 3 to pass through. The improvement adopts the corrugated pipe as the connecting piece 7, and when in use, the corrugated pipe can be properly bent aiming at the position of the pipe section with bending degree (such as an elbow and the like) so as to lead the device to enter the pipe section needing to be detected, thereby improving the applicability of the device; in addition, the first air charging and discharging pipeline 3 penetrates through the inner cavity of the corrugated pipe to enter the buoy 1.1 at the front end, so that the first air charging and discharging pipeline 3 does not leak outwards, contact with foreign objects in the using process is reduced, abrasion is effectively reduced, the service life is prolonged, meanwhile, the structural layout is reasonable, and miniaturization of the device is facilitated.
The air nozzle 5 and the air pressure sensor are arranged on the upper end face of the buoy 1.1 at the front end of the tail air bag 2. Above-mentioned improvement, air cock 5 and baroceptor's position are in inboard flotation pontoon 1.1's axial end face side, and when the mobile device, the supporting role that flotation pontoon 1.1 and foreign object contact play reduces its and foreign object contact with air cock 5 and baroceptor suspension, makes structural configuration reasonable, effectively reduces wearing and tearing, increase of service life.
The second air inflation and deflation pipeline 10 penetrates from the bottom end face of the buoy 1.1 at the tail end to the inner side and extends to penetrate through the inner side of the connecting pipe 8 to be connected with the air nozzle 5. Above-mentioned improvement aerifys sewage pipe 4 with the second and arranges the inner chamber of device in, reduces the second and aerifys sewage pipe 4 and leak outward, makes structural layout reasonable, effectively avoids the second to aerify sewage pipe 4 and receives wearing and tearing, has prolonged life.
The working principle is as follows: the buoy 1.1 is made of hard plastics, the buoy 1.1 is matched with the first air inflation and deflation pipeline 3 and the second air inflation and deflation pipeline 10 to be provided with a waterproof joint 12, and the first air inflation and deflation pipeline 3 and the second air inflation and deflation pipeline 10 penetrate into or penetrate out of the buoy 1.1 through the waterproof joint 12;
the connecting pipe 8 and the buoy 1.1 are in an integrally formed structural design;
when the air bag 2 is not inflated, the air bag is contracted to be wrapped outside the mounting groove 8.1, the maximum diameter of the uninflated air bag 2 is smaller than that of the buoy 1.1, and the air bag 2 is expanded to the maximum diameter exceeding that of the buoy 1.1 after the air bag is inflated;
the corrugated pipe is detachably connected with the buoy 1.1 through a threaded connection structure, and a waterproof sealing structure is arranged at the connection part;
the user can connect a cable to the bottom end face of the buoy 1.1 at the tail end for the use of the drawing device;
the display unit 11 can perform data communication with the air pressure sensor in a wireless manner, which is already used as a general prior art, and therefore, the details are not described herein;
when water seepage detection is carried out on a detection pipe section, the buoy 1.1 at the front end of the device firstly extends into the sewage pipe 4, and the buoy 1.1 at the front end continuously extends into the sewage pipe 4, so that the corrugated pipe and the floating at the rear end of the device both enter the sewage pipe 4, and if the sewage pipe 4 is bent, the device can enter a required position by bending the corrugated pipe;
further, the device is brought to the pipe section to be detected (the position to be detected is between the two air bags 2) by releasing the cable;
further, a user inflates the air bags 2 by introducing gas through the first inflation and deflation pipeline 3 until the air bags 2 are attached to the pipe wall, and a pipe section between the two air bags 2 forms a relatively closed cavity;
further, the user fills gassing pipeline 10 with the second and lets in gas, and the second fills gassing pipeline 10 makes the cavity pressurization through air cock 5 to cavity conveying gas, and after the pressurization finishes, a period of standing, the pressure value that the baroceptor that observes display unit 11 demonstration monitored, if the pressure value is about the pressure value after the pressurization, the pipeline section that the cavity corresponds does not exist because of the fracture appearance gas leakage (does not exist the infiltration promptly), if the pressure value appears reducing, the pipeline section that the cavity corresponds exists because of the fracture appearance gas leakage (exists the infiltration promptly).
After the detection is finished, a user deflates the air bag 2 through the first inflation/deflation pipeline 3 and inhales air to enable the air bag 2 to be in a contracted state, namely the device can be pulled out of the sewage pipe 4 through the cable.
When the water seepage detection is needed to be carried out on the pipe section to be detected, the floating unit at the front end of the device firstly extends into the sewage pipe 4.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a sewage drainage pipe infiltration detection device which characterized in that: the buoyancy detection device comprises two buoyancy units (1), wherein the two buoyancy units (1) are respectively provided with an air bag (2), the air bags (2) are connected with a first inflation and deflation pipeline (3), the two buoyancy units (1) are arranged on the inner side of a pipe section to be detected in a manner of matching with the flow direction of a sewage pipe (4), the first inflation and deflation pipeline (3) is filled with gas to expand the two air bags (2) to be attached to the inner side wall of the pipe section in a closed manner, so that a cavity is formed between the two air bags (2) on the inner side of the pipe section to be detected;
two buoyancy unit (1) cooperation cavity is provided with air cock (5) and baroceptor (6), air cock (5) are connected with the second and fill gassing pipeline (10), baroceptor (6) electricity is connected with display element (11), the second fills gassing pipeline (10) and lets in gas to the cavity through air cock (5), baroceptor (6) monitoring cavity atmospheric pressure change and feedback to display element (11).
2. The sewage drainage pipeline seepage detection device of claim 1, wherein: a connecting piece (7) is arranged between the two buoyancy units (1), and the two buoyancy units (1) are connected through the connecting piece (7).
3. The sewage drainage pipeline seepage detection device of claim 1, wherein: buoyancy unit (1) includes two flotation pontoons (1.1) that set up with the axle center, and the intermediate position of two flotation pontoons (1.1) is connected through connecting pipe (8), connecting pipe (8) periphery is provided with mounting groove (8.1) that supply gasbag (2) cover to establish.
4. The sewage drainage pipeline seepage detection device of claim 3, wherein: the valve core (9) is arranged on the pipe wall of one side of the connecting pipe (8) in a penetrating mode, the inner side of the air bag (2) is arranged at the output port of the valve core (9), and the inner side of the connecting pipe (8) is arranged at the input port of the valve core (9).
5. The sewage drainage pipeline water seepage detection device of claim 3, wherein: the maximum diameter of the two buoys (1.1) is larger than the maximum diameter of the air bag (2) in a retraction state, so that a holding gap for holding the air bag (2) is formed between the end faces of the two buoys (1.1).
6. The sewage drainage pipeline seepage detection device of claim 3, wherein: the first inflation and deflation pipeline (3) penetrates to the inner side from the bottom end face of the buoy (1.1) positioned at the tail end and extends to sequentially penetrate through the inner side of the connecting pipe (8) positioned at the tail end and the inner side of the connecting pipe (8) positioned at the front end to be connected with the input ports of the two valve cores (9) respectively.
7. The sewage drainage pipeline seepage detection device of claim 2, wherein: the connecting piece (7) adopts a corrugated pipe, and an inner cavity for the first inflation and deflation pipeline (3) to pass through is arranged on the inner side of the corrugated pipe.
8. The sewage drainage pipeline seepage detection device of claim 3, wherein: the air tap (5) and the air pressure sensor (6) are arranged on the upper end face of the buoy (1.1) located at the front end of the tail air bag (2).
9. The sewage drainage pipeline seepage detection device of claim 8, wherein: the second air inflation and deflation pipeline (10) penetrates to the inner side from the bottom end face of the buoy (1.1) positioned at the tail end and extends to penetrate through the inner side of the connecting pipe (8) to be connected with the air tap (5).
CN202222394758.0U 2022-09-08 2022-09-08 Sewage drainage pipeline infiltration detection device Active CN218819670U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222394758.0U CN218819670U (en) 2022-09-08 2022-09-08 Sewage drainage pipeline infiltration detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222394758.0U CN218819670U (en) 2022-09-08 2022-09-08 Sewage drainage pipeline infiltration detection device

Publications (1)

Publication Number Publication Date
CN218819670U true CN218819670U (en) 2023-04-07

Family

ID=87271731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222394758.0U Active CN218819670U (en) 2022-09-08 2022-09-08 Sewage drainage pipeline infiltration detection device

Country Status (1)

Country Link
CN (1) CN218819670U (en)

Similar Documents

Publication Publication Date Title
CN106944776A (en) A kind of plugging device for welded pipe line internal protection gas
CN218819670U (en) Sewage drainage pipeline infiltration detection device
CN212766657U (en) Rubber boat inflation system
CN211649365U (en) Sealing device for pipeline interface
CN218703730U (en) Air chamber through device of inflatable boat
CN108151973A (en) A kind of detection device for detecting packaging bag air-tightness
CN201865701U (en) Soft passage
CN211401664U (en) Fire hose resistance to compression detection device
CN211626848U (en) Ball valve detection device with alarm function
CN215213795U (en) Plunger type measuring pump convenient to installation
CN218894682U (en) Gas pressure acquisition instrument
CN217003272U (en) Automatic air charging and discharging valve body for floating-assisting air bag underwater
CN218063813U (en) Sand blowing pump pipe connector
CN217059301U (en) Positive and negative pressure test device
CN219369004U (en) Portable detection device for detecting outlet pressure of inflatable device of diving suit
CN212410000U (en) Pipeline air tightness detection device
CN219034940U (en) Quick inflation and deflation structure of inflatable cushion
CN217927677U (en) Pipeline butt joint reinforcing apparatus for factory foundation construction
CN219440160U (en) Telescopic improvement drainage bag
CN216041556U (en) Inflatable pneumatic dredging sealing head
CN218599462U (en) High-pressure gas filling pipeline replacement safety device
CN219077446U (en) Rescue boat with independent inflation cavity
CN220649507U (en) Hydraulic engineering water depth check out test set
CN213658173U (en) Detection device for upgrading and reconstructing ship equipment
CN217845551U (en) Automobile shock absorber ware tester

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant