Assembly type pneumatic device for checking smoothness of pre-embedded line pipe

Abstract

The utility model belongs to the technical field of pre-embedded line pipe smoothness inspection devices, and particularly relates to an assembly type pneumatic device for pre-embedded line pipe smoothness inspection. The air inlet end of the pneumatic control valve is connected with an air compressor, the air outlet end of the pneumatic control valve is connected with a second connecting pipe, and the free end of the second connecting pipe is provided with a conical rubber ring; in the lead wire rotating vehicle, a wire bundle shaft wound with a lead wire is rotationally mounted on a fixed bottom plate; the lead penetrates into the second connecting pipe and out of the rubber ring, and the free end of the lead is connected with a probe ball. Compared with the prior art, the utility model has the beneficial effects that the pneumatic principle of an air compressor is adopted, and the probe ball quickly moves in the embedded pipe, so that the inspection time can be effectively shortened, the working efficiency is improved, and labor is saved; the blocking position can be obtained according to the length of the lead extending into the embedded pipe, and the guiding effect on subsequent dredging is achieved; the lead rotating vehicle is combined with an external power mechanism to automatically take up and pay off; the diverter is adopted for multi-path expansion, and the inspection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pre-embedded conduit unobstructed inspection device, specifically relating to an assembled pneumatic device for inspecting the unobstructed flow of pre-embedded conduits. Background Technology

[0002] In the construction of building electrical engineering, after the conduit is pre-buried, it is necessary to check whether the conduit is unobstructed. This process is the only way to check the quality of the conduit pre-buried. If the construction progress of this process is not up to par, it will affect the subsequent civil engineering plastering construction plan. If the quality control of this process is not good, it will affect the later wiring progress and damage the completed wall or floor, resulting in poor overall construction quality of the project.

[0003] There are two main existing inspection methods: one is an air-blowing test, where smooth airflow indicates unobstructed flow, while obstruction indicates blockage; the other is to manually pull the cable on a cable-laying vehicle into the pre-buried pipe for inspection. The former cannot pinpoint the location of the blockage and is therefore less helpful for subsequent unblocking; while the latter requires manual operation of the cable-laying vehicle, which is time-consuming, labor-intensive, and slow in extending the cable. Moreover, this process usually requires multiple people to work together, resulting in lengthy inspection times and low work efficiency. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an assembled pneumatic device for checking the unobstructed flow of pre-buried conduits.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: An assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits includes: an air compressor, a pneumatic control valve, a lead wire rotating cart, a probe ball, a first connecting pipe, and a second connecting pipe; the air inlet of the pneumatic control valve is connected to the air outlet of the air compressor through the first connecting pipe, the air outlet of the pneumatic control valve is connected to the second connecting pipe, and a conical rubber ring is installed at the free end of the second connecting pipe; in the lead wire rotating cart, a wire bundle shaft around which the lead wire is rotated is mounted on a fixed base plate; the lead wire passes through the second connecting pipe until it exits through the rubber ring, and the free end of the lead wire is connected to a probe ball.

[0006] Furthermore, the wire bundle shaft has a slot for connecting to an external power mechanism.

[0007] Furthermore, the wire bundle shaft is rotatably mounted on the fixed base plate via bearings, and the wire bundle shaft is fixedly mounted on a rotating base plate, which is located above the fixed base plate.

[0008] Furthermore, the bearing is located between the rotating base plate and the fixed base plate.

[0009] Furthermore, the second connecting tube is composed of a flexible tube, a threading tube, and a front extension tube connected in sequence. The rubber ring is installed at the end of the front extension tube, and the threading tube has a threading hole near the front extension tube for the lead wire to pass through.

[0010] Furthermore, the end of the extension tube that connects to the rubber ring is bent at a 30-60° angle to its body.

[0011] Furthermore, the hose is a rubber hose, the conduit is a galvanized steel conduit with a tight-fitting design, and the extension tube is a heavy-duty PVC conduit.

[0012] Furthermore, the outer contour dimension of the cross-section of the rubber ring gradually decreases in the direction of airflow.

[0013] Furthermore, in the pneumatic control valve, a pressure gauge is installed on the outlet pipe of the controllable pressure bottle with a built-in controllable pressure chamber, and a flared pipe joint is installed at the inlet end of the controllable pressure bottle.

[0014] Furthermore, a distributor is installed at the outlet of the air compressor.

[0015] Compared with existing technologies, the advantages of this utility model are as follows: The use of an air compressor pneumatic principle enables the probe ball to move rapidly within the embedded pipe, effectively shortening inspection time and improving work efficiency. Furthermore, it eliminates the need for manual traction, saving effort. The length of the lead wire inserted into the embedded pipe allows for the determination of the blockage location, providing excellent guidance for subsequent unblocking work. The lead wire rotating cart can be combined with an external power mechanism, facilitating automatic wire deployment and retraction, thus improving work efficiency. The use of a diverter for multi-path expansion design allows for inspection of the embedded pipe's patency at multiple locations, improving inspection efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lead wire rotating carriage in this utility model;

[0018] Figure 3 This is a partial schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the pneumatic device in Example 2.

[0020] In the picture:

[0021] 1. Air compressor; 2. Pneumatic control valve; 3. Lead wire rotating cart; 4. Probe ball; 5. First connecting pipe; 6. Second connecting pipe.

[0022] 101. Diverter

[0023] 201. Controllable pressure bottle; 202. Pressure gauge; 203. Spring.

[0024] 301. Fixed base plate; 302. Wire bundle spool; 303. Lead wire; 304. Rotating base plate; 305. Bearing; 306. Slot.

[0025] 601. Rubber ring; 602. Flexible hose; 603. Conduit; 604. Extension tube; 605. Threading hole. Detailed Implementation

[0026] To facilitate understanding of this utility model, it will be described in more detail below with reference to the accompanying drawings and specific embodiments. However, this utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0027] Example 1: Combination Figure 1-3 Understanding: A prefabricated pneumatic device for checking the unobstructed flow of pre-buried conduits includes: an air compressor 1, a pneumatic control valve 2, a lead wire rotating cart 3, a probe ball 4, a first connecting pipe 5, and a second connecting pipe 6; In the pneumatic control valve 2, a pressure gauge 202 is installed on the outlet pipe of a controllable pressure cylinder 201 with a built-in controllable pressure chamber, and a flared pipe joint is installed at the inlet end of the controllable pressure cylinder 201; the inlet end of the pneumatic control valve 2 is connected to the air compressor through the first connecting pipe 5. The air outlet of the pneumatic control valve 2 is connected to the second connecting pipe 6. The second connecting pipe 6 is composed of a flexible hose 602, a threading pipe 603, and a forward extension pipe 604 connected in sequence. A tapered rubber ring 601 is installed at the end of the forward extension pipe 604. The outer contour dimension of the cross-section of the rubber ring 601 gradually decreases in the direction of airflow, which can play a role in sealing and preventing air leakage. The end of the forward extension pipe 604 connected to the rubber ring 601 is bent at 30-60° with its body. A threading hole 605 is opened on the threading pipe 603 near the forward extension pipe 604. In the lead wire rotating carriage 3, the wire bundling shaft 302 is rotatably mounted on the fixed base plate 301 via the bearing 305. The wire bundling shaft 302 is fixedly mounted on the rotating base plate 304, which is located above the fixed base plate 301. The bearing 305 is located between the rotating base plate 304 and the fixed base plate 301. The wire bundling shaft 302 has a slot 306 for connecting to an external power mechanism. A lead wire 303 is wound on the wire bundling shaft 302. The lead wire 303 passes through the wire hole 605 into the wire tube 603, through the extension tube 604, and out through the rubber ring 601. The free end of the lead wire 303 is connected to a probe ball 4.

[0028] The device is modular. Specifically, the pneumatic control valve 2 is modified from a used dry powder fire extinguisher. A hole is drilled at the bottom side of the valve, and an SP female connector is welded on as an air inlet, connecting to the air compressor 1. A controllable pressure chamber is formed inside the valve. A spring 203 can be added to the valve. Compressing the spring 203 opens the air outlet, and resetting the spring 203 closes the air outlet. Thus, the opening or closing of the fire extinguisher controls the start or stop of airflow. The first connecting pipe 5 is a PU hose. The flexible hose 602 is a rubber hose, the extension pipe 604 is a heavy-duty PVC conduit, and the conduit 603 is made of a galvanized steel conduit with a tight-fitting design. It can serve as the operating handle for the pneumatic device. A hole 605 is drilled at its front end to form a wire hole 605 for threading the lead wire 303, and the rear end connects to the fire extinguisher's air outlet via a rubber hose. The probe ball 4 is made of plastic or rubber with a φ10-20mm ball head, which is used to bind the lead wire 303. The ball head of the appropriate size is selected according to the different pipe diameters. The pipe is inspected by the probe ball 4 with the wire. Moreover, the location of the blockage can be determined by the length of the lead wire 303 extending into the pre-buried pipe, which has a good guiding role for subsequent unblocking work.

[0029] Assemble the pneumatic device of this application as described above, wherein the conduit 603 is made of JDG20 tubing; the extension tube 604 is made of PVC15 heavy-duty conduit, which can penetrate deep into the junction box and the end connection device inside the box; the end of the PVC tube is bent at a 45° angle with a spring for easy operation inside the junction box. The other end of the PVC15 tube is connected to the JDG20 tube, and the probe ball 4 is a φ14 rubber ball.

[0030] In use, the forward extension tube 604 is inserted forward to seal the opening of the pre-embedded pipe with the rubber ring 601. At this time, the probe ball 4 is located near the rubber ring 601. The air compressor 1 and the pneumatic control valve 2 are turned on, and high-pressure airflow is injected into the second connecting pipe 6, pushing the probe ball 4 to move outward in the direction of airflow and into the pre-embedded pipe. If the probe ball 4 passes through the pre-embedded pipe smoothly, it indicates that there is no blockage in the pre-embedded pipe, and the subsequent wire threading work will be smooth. If the probe ball 4 fails to pass through, it generally indicates that there is a blockage in the pre-embedded pipe. The atmospheric pressure or flow rate can be adjusted appropriately according to the detection plan for re-detection. At the same time, the length of the lead wire 303 extending into the pre-embedded pipe is recorded to provide support for subsequent unblocking work. After detection, the electric drill can be inserted into the slot 306, so that the wire bundling shaft 302 rotates relative to the fixed base plate 301 to assist in the recovery and winding of the lead wire 303.

[0031] This application uses the air compressor 1 and the pneumatic control valve 2 to push the probe ball 4 from one side of the pre-embedded pipe to the other side using air pressure to check whether the pre-embedded pipe is unobstructed. Pneumatic operation allows the probe ball 4 to move quickly within the pre-embedded pipe, effectively shortening inspection time and improving work efficiency. Furthermore, it eliminates the need for manual traction, saving effort. The lead wire rotating cart 3 can be combined with an external power mechanism to facilitate automatic wire winding and unwinding, further improving work efficiency.

[0032] Example 2: Based on Example 1, a distributor 101 is installed at the outlet of the air compressor 1, and multiple pneumatic control valves 2 are connected to the distributor 101 via multi-way air pipes. For example... Figure 4 As shown, a pneumatic air exhaust distributor with one inlet and five outlets is used, connecting to three channels, which allows for separate inspection of pre-buried pipes at three locations or on three floors. The multi-channel expansion design using the distributor facilitates inspection of the unobstructed flow of pre-buried pipes at multiple locations, improving inspection efficiency.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A prefabricated pneumatic device for checking the unobstructed flow of pre-buried conduits, characterized in that, include: An air compressor (1), a pneumatic control valve (2), a lead wire rotating cart (3), a probe ball (4), a first connecting pipe (5), and a second connecting pipe (6); the air inlet of the pneumatic control valve (2) is connected to the air outlet of the air compressor (1) through the first connecting pipe (5), and the air outlet of the pneumatic control valve (2) is connected to the second connecting pipe (6), and a conical rubber ring (601) is installed on the free end of the second connecting pipe (6); in the lead wire rotating cart (3), a wire bundle shaft (302) with a lead wire (303) is rotatably mounted on a fixed base plate (301); the lead wire (303) passes through the second connecting pipe (6) until the rubber ring (601) passes through, and the free end of the lead wire (303) is connected to a probe ball (4).

2. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 1, characterized in that, The wire bundle shaft (302) has a slot (306) for connecting to an external power mechanism.

3. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 2, characterized in that, The wire bundling shaft (302) is rotatably mounted on the fixed base plate (301) via a bearing (305), and the wire bundling shaft (302) is fixedly mounted on a rotating base plate (304), which is located above the fixed base plate (301).

4. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 3, characterized in that, The bearing (305) is located between the rotating base plate (304) and the fixed base plate (301).

5. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 1, characterized in that, The second connecting tube (6) is composed of a flexible tube (602), a threading tube (603) and a front extension tube (604) connected in sequence. The rubber ring (601) is installed at the end of the front extension tube (604). The threading tube (603) has a threading hole (605) near the front extension tube (604) for the lead wire (303) to pass through.

6. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 5, characterized in that, The end of the extension tube (604) that connects to the rubber ring (601) is bent at 30-60° with its body.

7. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 5, characterized in that, The hose (602) is a rubber hose, the conduit (603) is a galvanized steel conduit with a tight fit, and the extension tube (604) is a heavy-duty PVC conduit.

8. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 1, characterized in that, The outer contour dimension of the cross section of the rubber ring (601) gradually decreases in the direction of airflow.

9. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to claim 1, characterized in that, In the pneumatic control valve (2), a pressure gauge (202) is installed on the outlet pipe of the controllable pressure bottle (201) with a built-in controllable pressure chamber, and a flared pipe joint is installed at the inlet end of the controllable pressure bottle (201).

10. The assembled pneumatic device for checking the unobstructed flow of pre-embedded conduits according to any one of claims 1-9, characterized in that, The air compressor (1) is equipped with a distributor (101) at its outlet.

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