Air leakage detection device for ventilating duct

Abstract

The utility model discloses an air leakage detection device for a ventilating duct, which is applied to the field of ventilating ducts and comprises a shell, a detection mechanism is arranged in the shell, a support plate is bolted at the top of the shell, a winding drum is rotatably sleeved on the inner wall of the support plate, and a fixing mechanism is arranged at one end of the winding drum; after the connecting pipe winding device is used, the rotating disc is rotated to enable the winding drum to rotate to wind the connecting pipe, and after winding is completed, the fixing bolt is screwed to fix the connecting pipe, so that the purpose of conveniently storing the connecting pipe can be achieved, the workload is reduced, the connecting pipe is prevented from being scattered and wound, and the connecting pipe winding device is convenient to use; by means of the mode that the sliding barrel is moved to enable the trapezoidal block to move, the trapezoidal block moves to enable the clamping rod to be disengaged from the clamping groove under the action of the second spring, and the first blocking plate is taken down to be replaced, the purpose of conveniently replacing the blocking plate can be achieved, the workload is reduced, the replacing efficiency is improved, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of ventilation ducts, and in particular to a ventilation duct leakage detection device. Background Technology

[0002] A search of Chinese patents revealed publication number CN218885337U, entitled "A Duct Leak Detection Device," belonging to the field of building engineering technology. It mainly includes cover plates installed at both ends of a duct. A fan is connected to one cover plate, and a wind pressure sensor is installed inside the duct. Both ends of the wind pressure sensor are connected to ropes. Rope-passing holes are provided on both cover plates. A rotating assembly is located on the lower side of the duct. The ropes at both ends of the wind pressure sensor pass through the rope-passing holes and are wound around the rotating assembly. When the rotating assembly rotates clockwise, the wind pressure sensor moves to one side via the ropes; when the rotating assembly rotates counterclockwise, the wind pressure sensor moves to the other side via the ropes. The fan pressurizes the duct, and the rotating assembly, through the ropes, moves the wind pressure sensor inside the duct. The wind pressure sensor detects the air pressure at various locations within the duct, and the pressure difference between leaking and non-leaking areas allows for convenient location of leaks. This duct leakage detection device achieves the effect of conveniently detecting the location of leaks.

[0003] Existing detection devices are inconvenient for storing connecting pipes. Generally, these devices connect to the ductwork for testing, and after testing, the connecting pipes need to be stored. Storage typically involves winding the pipes together, tying them with rope, and placing them on the device. This process is cumbersome, increases workload, and reduces efficiency. Furthermore, the connecting pipes are prone to tangling and becoming unusable during winding, affecting usability. Replacing the endplates is also inconvenient, as endplates are usually of fixed size. When testing ducts of different sizes, the endplates need to be replaced. Since endplates are typically threaded to the connecting pipes, replacement requires tools, which is tedious, increases workload, reduces efficiency, and is inconvenient to use. To address these problems, we propose a ventilation duct leakage detection device. Utility Model Content

[0004] The purpose of this invention is to provide a ventilation duct leakage detection device, which has the advantages of being easy to store the connecting pipe and easy to replace the plug.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a ventilation duct leakage detection device, comprising a housing, a detection mechanism disposed inside the housing, a support plate bolted to the top of the housing, a winding drum rotatably sleeved on the inner wall of the support plate, a fixing mechanism disposed at one end of the winding drum, a fixing pipe rotatably sleeved on the inner wall of the other end of the winding drum, and the fixing pipe being fixedly sleeved with the inner wall of the support plate, an air passage being opened on the inner wall of the winding drum, and the air passage communicating with one end of the fixing pipe, and the other end of the air passage communicating with a connecting pipe.

[0006] By adopting the above technical solution, after use, the turntable is rotated to make the winding drum rotate and wind up the connecting pipe. After winding, the fixing bolts are tightened to fix it. This method can facilitate the storage of the connecting pipe, reduce the workload, avoid the connecting pipe from being scattered and tangled, and make it convenient to use.

[0007] The present invention is further configured such that: the other end of the connecting pipe is connected to a mounting base; a first blocking plate is slidably sleeved on the inner wall of the mounting base; a sliding cylinder is slidably sleeved on the surface of the mounting base; a trapezoidal block is bolted to the inner wall of the sliding cylinder; a first spring is fixedly connected between the trapezoidal block and the inner wall of the mounting base by a spring fixing member; a snap-fit ​​rod is slidably connected to the surface of the trapezoidal block; a second spring is sleeved on the surface of the snap-fit ​​rod; a snap-fit ​​groove is opened on the surface of the first blocking plate, and the snap-fit ​​groove snaps into one end of the snap-fit ​​rod; a duct is fixedly connected to the surface of the first blocking plate by bolts; and a second blocking plate is fixedly connected to the other end of the duct by bolts.

[0008] By adopting the above technical solution, the trapezoidal block is moved by moving the sliding cylinder. The movement of the trapezoidal block causes the locking rod to disengage from the locking groove under the action of the second spring, and the first blocking plate can be removed and replaced. This method can facilitate the replacement of the blocking plate, reduce the workload, improve the replacement efficiency, and make it convenient to use.

[0009] The present invention is further configured such that: the detection mechanism includes an air pump, the air pump is bolted to the inner wall of the housing, the output end of the air pump is connected to an air pipe, and the other end of the air pipe is connected to one end of a fixed pipe, and an electric valve and a pressure gauge are connected to the surface of the air pipe.

[0010] By adopting the above technical solution and setting up a testing agency, it is convenient to inspect the air ducts.

[0011] The present invention is further configured such that: the fixing mechanism includes a fixing block, the fixing block is rotatably sleeved with the surface of the winding drum, and the fixing block is bolted to the surface of the support plate, and the inner wall of the fixing block is threaded with a fixing bolt.

[0012] The above technical solution uses a fixing mechanism to secure the winding drum.

[0013] The present invention is further configured such that a turntable is bolted to one end of the winding drum.

[0014] By adopting the above technical solution, a turntable is set up to facilitate the rotation of the winding drum and make winding easier.

[0015] The present invention is further provided that the surface of the slide tube is provided with anti-slip texture.

[0016] By adopting the above technical solution, anti-slip texture is set to prevent hand slippage and facilitate operation.

[0017] The present invention is further configured such that a sealing ring is provided between the first blocking plate and the mounting base.

[0018] By adopting the above technical solution, a sealing gasket is installed to prevent air leakage.

[0019] The present invention is further configured such that: a caster wheel is bolted to the bottom of the housing.

[0020] By adopting the above technical solution and setting omnidirectional wheels, the device can be easily moved.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model achieves the purpose of convenient storage of connecting pipes by rotating the turntable to make the winding drum rotate and winding the connecting pipe after use, and tightening the fixing bolts to fix it after winding. This reduces the workload, avoids the connecting pipes from being scattered and tangled, and is convenient to use.

[0023] 2. This utility model uses a movable sliding cylinder to move the trapezoidal block. The movement of the trapezoidal block causes the locking rod to disengage from the locking groove under the action of the second spring, allowing the first blocking plate to be removed and replaced. This method facilitates the replacement of the blocking plate, reduces workload, improves replacement efficiency, and is convenient to use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a side sectional view of the structure of this utility model;

[0027] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0028] Reference numerals: 1. Housing; 2. Detection mechanism; 3. Support plate; 4. Rewind drum; 5. Anti-slip texture; 6. Fixing mechanism; 7. Fixing pipe; 8. Air passage; 9. Connecting pipe; 10. Mounting base; 11. Sealing ring; 12. First blocking plate; 13. Slide cylinder; 14. Caster wheel; 15. First spring; 16. Trapezoidal block; 17. Clip rod; 18. Second spring; 19. Clip groove; 20. Air duct; 21. Second blocking plate; 22. Air pump; 23. Air pipe; 24. Electric valve; 25. Pressure gauge; 26. Fixing block; 27. Fixing bolt; 28. Turntable. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] refer to Figure 1 , Figure 2 and Figure 3 A ventilation duct leakage detection device includes a housing 1, a detection mechanism 2 inside the housing 1, a support plate 3 bolted to the top of the housing 1, a winding drum 4 rotatably sleeved on the inner wall of the support plate 3, a fixing mechanism 6 at one end of the winding drum 4, and a fixing pipe 7 rotatably sleeved on the inner wall of the other end of the winding drum 4, with the fixing pipe 7 fixedly sleeved to the inner wall of the support plate 3. An air passage 8 is opened on the inner wall of the winding drum 4, and the air passage 8 is connected to one end of the fixing pipe 7, while the other end of the air passage 8 is connected to a connecting pipe 9. After use, the winding drum 4 is rotated by rotating the turntable 28 to wind up the connecting pipe 9. After winding, the fixing bolt 27 is tightened to fix it. This method can facilitate the storage of the connecting pipe 9, reduce workload, avoid the connecting pipe 9 from being scattered and tangled, and facilitate use.

[0032] refer to Figure 2 The testing mechanism 2 includes an air pump 22, which is bolted to the inner wall of the housing 1. The output end of the air pump 22 is connected to an air pipe 23, and the other end of the air pipe 23 is connected to one end of the fixed pipe 7. An electric valve 24 and a pressure gauge 25 are connected to the surface of the air pipe 23. By setting up the testing mechanism 2, it is convenient to test the air duct 20.

[0033] refer to Figure 3 The fixing mechanism 6 includes a fixing block 26, which is rotatably sleeved with the surface of the take-up drum 4 and bolted to the surface of the support plate 3. The inner wall of the fixing block 26 is threaded with a fixing bolt 27. The take-up drum 4 is fixed by setting the fixing mechanism 6.

[0034] refer to Figure 1 and Figure 3 One end of the winding drum 4 is bolted with a turntable 28. By setting the turntable 28, it is easy to rotate the winding drum 4 and facilitate winding.

[0035] Example 2:

[0036] refer to Figure 1 , Figure 2 and Figure 4 The other end of the connecting pipe 9 is connected to the mounting base 10. A first blocking plate 12 is slidably sleeved on the inner wall of the mounting base 10. A sliding cylinder 13 is slidably sleeved on the surface of the mounting base 10. A trapezoidal block 16 is bolted to the inner wall of the sliding cylinder 13. A first spring 15 is fixedly connected between the trapezoidal block 16 and the inner wall of the mounting base 10 by a spring fastener. A snap-fit ​​rod 17 is slidably connected to the surface of the trapezoidal block 16. A second spring 18 is sleeved on the surface of the snap-fit ​​rod 17. A snap-fit ​​groove 19 is formed on the surface of the first blocking plate 12. The groove 19 is engaged with one end of the locking rod 17. The surface of the first blocking plate 12 is fixedly connected to the air duct 20 by bolts. The other end of the air duct 20 is fixedly connected to the second blocking plate 21 by bolts. The trapezoidal block 16 is moved by moving the sliding cylinder 13. The movement of the trapezoidal block 16 causes the locking rod 17 to disengage from the locking groove 19 under the action of the second spring 18, allowing the first blocking plate 12 to be removed and replaced. This method facilitates the replacement of the blocking plate, reduces workload, improves replacement efficiency, and is convenient to use.

[0037] refer to Figure 4 The surface of the slide cylinder 13 is provided with anti-slip texture 5. By setting the anti-slip texture 5, the hand slips and the operation is facilitated.

[0038] refer to Figure 4 A sealing ring 11 is provided between the first blocking plate 12 and the mounting base 10 to prevent air leakage.

[0039] refer to Figure 1 , Figure 2 and Figure 3 The bottom of the housing 1 is bolted with casters 14, which facilitates the movement of the device.

[0040] Brief description of the usage process: During testing, the first blocking plate 12 and the second blocking plate 21 are bolted to both ends of the air duct 20 to block it. Then, the air pump 22 is turned on to inflate the inside of the air duct 20. The pressure gauge 25 is observed. After the air pressure is inflated to the required pressure, the air pump 22 and the electric valve 24 are turned off. After stabilizing the pressure for a period of time, the pressure gauge 25 is observed to see if the air pressure in the air duct 20 drops. If the air pressure drops, the air duct 20 has poor sealing, i.e., it leaks air. If the air pressure does not drop, the air duct 20 has good sealing, i.e., it does not leak air, thus achieving the purpose of air duct 20 leakage detection. After the test is completed, the first blocking plate 12 and the second blocking plate 21 are removed. The first blocking plate 12 and the connecting pipe 9 are disconnected and then loosened. Fix bolt 27, rotate turntable 28, turntable 28 rotates and drives take-up drum 4 to rotate, take-up drum 4 rotates and winds up connecting pipe 9. After winding, tighten fixing bolt 27 to fix it, thereby facilitating the storage of connecting pipe 9; move slide cylinder 13, slide cylinder 13 moves and drives trapezoidal block 16 to move, trapezoidal block 16 moves and causes snap-fit ​​rod 17 to disengage from snap-fit ​​groove 19 under the action of second spring 18, remove the plug plate, install the required first plug plate 12 into mounting base 10, loosen slide cylinder 13, slide cylinder 13 drives trapezoidal block 16 to reset under the action of first spring 15, trapezoidal block 16 resets and causes snap-fit ​​rod 17 to snap into snap-fit ​​groove 19, fix the first plug plate 12, complete the replacement, thereby facilitating the replacement of plug plate.

[0041] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A ventilation duct leakage detection device, comprising a housing (1), characterized in that, The housing (1) is equipped with a detection mechanism (2) inside. A support plate (3) is bolted to the top of the housing (1). A winding drum (4) is rotatably sleeved on the inner wall of the support plate (3). A fixing mechanism (6) is provided at one end of the winding drum (4). A fixing tube (7) is rotatably sleeved on the inner wall of the other end of the winding drum (4). The fixing tube (7) is fixedly sleeved on the inner wall of the support plate (3). An air passage (8) is opened on the inner wall of the winding drum (4). The air passage (8) is connected to one end of the fixing tube (7). The other end of the air passage (8) is connected to a connecting tube (9).

2. The ventilation duct leakage detection device according to claim 1, characterized in that, The other end of the connecting pipe (9) is connected to the mounting base (10). The inner wall of the mounting base (10) is slidably fitted with a first blocking plate (12). The surface of the mounting base (10) is slidably fitted with a slide cylinder (13). The inner wall of the slide cylinder (13) is bolted with a trapezoidal block (16). The trapezoidal block (16) and the inner wall of the mounting base (10) are fixedly connected by a first spring (15) through a spring fastener. The surface of the trapezoidal block (16) is slidably connected with a snap-fit ​​rod (17). The surface of the snap-fit ​​rod (17) is fitted with a second spring (18). The surface of the first blocking plate (12) is provided with a snap-fit ​​groove (19), and the snap-fit ​​groove (19) is snapped with one end of the snap-fit ​​rod (17). The surface of the first blocking plate (12) is fixedly connected with a duct (20) by bolts. The other end of the duct (20) is fixedly connected with a second blocking plate (21) by bolts.

3. The ventilation duct leakage detection device according to claim 1, characterized in that, The testing mechanism (2) includes an air pump (22), which is bolted to the inner wall of the housing (1). The output end of the air pump (22) is connected to an air pipe (23), and the other end of the air pipe (23) is connected to one end of a fixed pipe (7). An electric valve (24) and a pressure gauge (25) are connected to the surface of the air pipe (23).

4. The ventilation duct leakage detection device according to claim 1, characterized in that, The fixing mechanism (6) includes a fixing block (26), which is rotatably sleeved with the surface of the winding drum (4) and bolted to the surface of the support plate (3). The inner wall of the fixing block (26) is threaded with a fixing bolt (27).

5. The ventilation duct leakage detection device according to claim 1, characterized in that, One end of the winding drum (4) is bolted with a turntable (28).

6. A ventilation duct leakage detection device according to claim 2, characterized in that, The surface of the slide (13) is provided with anti-slip texture (5).

7. A ventilation duct leakage detection device according to claim 2, characterized in that, A sealing ring (11) is provided between the first blocking plate (12) and the mounting base (10).

8. The ventilation duct leakage detection device according to claim 1, characterized in that, The bottom of the housing (1) is bolted with casters (14).

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