Foldable storage building door and window air tightness on-site detection device

Abstract

The utility model provides foldable building door and window air tightness on -the -spot detection device relates to detection equipment technical field, include: device box, four walking wheels are fixedly installed to the lower end surface of device box, one handle is installed to the left side plate outer end surface of device box respectively, the inner end surface mounting of device box has first baffle. In the utility model, the air pressure sensor can real -time monitoring the air pressure value in the room, when the air pressure reaches threshold value, sends the stop command to the electric control valve, the gas cylinder stops to the outside jet, maintains target pressure difference, records air pressure data for air tightness calculation simultaneously, can observe whether there is smoke to escape outward at this moment, thereby judges whether the air tightness of door and window is good, solves the problem that the existing detection equipment cannot accurately judge how much the air pressure in the room, there is the situation that the detection result is not accurate, and the equipment is mostly integrated design, also cannot dismantle storage, is not favorable to the storage problem.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a foldable and retractable on-site testing device for the airtightness of building doors and windows. Background Technology

[0002] As an important component of building envelope, the airtightness of building doors and windows has a crucial impact on the overall performance of the building. With people's increasing demands for building energy conservation, indoor environmental quality and living comfort, the importance of the airtightness of doors and windows has become increasingly prominent, thus requiring airtightness testing of doors and windows.

[0003] However, existing door and window airtightness testing devices still have the following two shortcomings in use: First, existing detection equipment cannot accurately determine the indoor air pressure when pressurizing a room, and therefore cannot determine the extent of gas leakage under the pressure difference between indoor and outdoor conditions, resulting in inaccurate detection results. Secondly, most existing testing equipment is an integrated design, which means it cannot be disassembled and stored. This results in the equipment requiring a large amount of space for transportation and storage, which is not conducive to storage. Utility Model Content

[0004] This utility model relates to a foldable and retractable on-site testing device for the airtightness of building doors and windows. It solves the problems of existing testing equipment being unable to accurately determine the indoor air pressure, resulting in inaccurate test results, and the fact that most of the equipment is an integrated design, making it impossible to disassemble and store, which is not conducive to storage.

[0005] This utility model provides a foldable and retractable on-site testing device for the airtightness of building doors and windows, specifically including: a device box; Four wheels are fixedly installed on the lower end face of the device box. A handle is installed on the outer end face of the left and right side plates of the device box. A first partition is installed on the inner end face of the device box. The two ends of the first partition are fixedly connected to the left and right side plates of the device box. The second partition is installed inside the device box. The front end of the second partition is fixedly connected to the first partition, and the rear end of the second partition is fixedly connected to the rear side plate of the device box. A gas cylinder, located inside the device box, with a connecting hose installed on its upper end face; The gas supply pipe has a T-shaped structure, and a first air inlet pipe is evenly installed on the front end face of the gas supply pipe. The first air inlet pipe is connected to a connecting hose. The placement plate is a circular plate structure. The placement plate is connected to the device box by bolts. A controller is fixedly installed on the upper end face of the placement plate, and a pressure sensor is installed on the outer end face of the controller. The limiting card box is provided in two symmetrical sets. The two limiting card boxes are fixedly installed on the rear side plate surface of the device box, and the inside of the limiting card box is provided with a cavity. The pull rod has an inverted U-shaped structure, and its two vertical plates are slidably fitted into the cavity inside the limiting card box.

[0006] Furthermore, the surface of the placement plate is provided with locking holes, and the upper part of the gas cylinder is locked into the locking holes on the surface of the placement plate.

[0007] Furthermore, a limiting block is installed on the outer end surface of the second partition. The surface of the limiting block has an arc-shaped structure, and the limiting block is in close contact with the gas cylinder.

[0008] Furthermore, an electrically controlled valve is installed on the surface of the first intake pipe, and the electrically controlled valve is electrically connected to the controller.

[0009] Furthermore, a smoke generator is fixedly installed on the inner end face of the front side plate of the device box. An air outlet pipe is installed on the upper end of the smoke generator, and a second air inlet pipe is installed on the lower end face of the air supply pipe. The second air inlet pipe and the air outlet pipe are connected by a flange.

[0010] Furthermore, a fixing ring is installed on the upper end face of the placement plate, and the gas supply pipe is snapped into the upper part of the fixing ring.

[0011] Furthermore, the surface of the limiting card box has two connecting holes, and the surfaces of the two vertical plates of the pull rod have track grooves, with fastening blocks slidingly fitted inside the track grooves.

[0012] Furthermore, two fastening screws are installed on the surface of the fastening block, and the fastening screws are engaged in the connecting holes on the surface of the limiting card box, with a nut connected to the surface of the fastening screw.

[0013] This utility model provides a foldable and retractable on-site testing device for the airtightness of building doors and windows, which has the following beneficial effects: 1. The two vertical plates of the pull rod can slide and retract along the cavity of the limiting card box to achieve the folding and storage function. After the vertical plates of the pull rod slide along the cavity of the limiting card box and are adjusted to a suitable height, they are engaged in the connecting hole by the fastening screw of the fastening block and the nut is turned to lock, which facilitates the dragging and moving of the device.

[0014] 2. Electrical control between the electric valve and the controller. The controller can control the opening and closing of the electric valve. A smoke generator is installed in the device box. It is connected to the second air inlet pipe at the lower end of the gas supply pipe through a flange, so that the smoke generated by the smoke generator can enter the gas supply pipe and be discharged into the room with the airflow, which can show the air leakage points of the door and window gaps.

[0015] 3. The air pressure sensor can monitor the air pressure inside the room in real time. When the air pressure reaches the threshold, it sends a stop command to the electronically controlled valve, and the gas cylinder stops expelling gas to maintain the target pressure difference. At the same time, it records the air pressure data for airtightness calculation. At this time, it can be observed whether there is smoke escaping outward, thereby judging whether the airtightness of the doors and windows is good. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram: Figure 1 A schematic diagram of the overall device structure of this utility model is shown; Figure 2 A schematic diagram of the connection structure between the device box and the limiting card box of this utility model is shown; Figure 3 An exploded view of the placement plate and device box of this utility model is shown. Figure 4 A schematic diagram of the internal parts structure of the device box of this utility model is shown; Figure 5 A schematic diagram of the connection structure between the gas cylinder, connecting hose, and gas delivery pipe of this utility model is shown. Figure 6 A schematic diagram of the exploded structure of the smoke generator and gas delivery pipe of this utility model is shown. Figure 7 A schematic diagram of the connection structure between the controller and the pressure sensor of this utility model is shown.

[0019] List of reference numerals in the attached diagram: 1. Device box; 101. Wheels; 102. Handle; 103. First partition; 2. Second partition; 201. Limiting block; 3. Smoke generator; 301. Gas outlet pipe; 4. Gas cylinder; 401. Connecting hose; 5. Gas supply pipe; 501. First air inlet pipe; 5011. Electrically controlled valve; 502. Second air inlet pipe; 6. Placement plate; 601. Locking hole; 602. Fixing ring; 7. Controller; 701. Air pressure sensor; 8. Limiting box; 801. Cavity; 802. Connecting hole; 9. Pull rod; 901. Track groove; 10. Fastening block; 1001. Fastening screw. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1: Please refer to Figures 1 to 7 : This utility model proposes a foldable and retractable on-site testing device for the airtightness of building doors and windows, comprising: device box 1; Four wheels 101 are fixedly installed on the lower end face of the device box 1. A handle 102 is installed on the outer end face of the left and right side plates of the device box 1 respectively. A first partition 103 is installed on the inner end face of the device box 1. The two ends of the first partition 103 are fixedly connected to the left and right side plates of the device box 1. The second partition 2 is installed inside the device box 1. The front end of the second partition 2 is fixedly connected to the first partition 103, and the rear end of the second partition 2 is fixedly connected to the rear side plate of the device box 1. Gas cylinder 4 is located inside device box 1, and a connecting hose 401 is installed on the upper end face of gas cylinder 4; The gas supply pipe 5 has a T-shaped structure. The front end face of the gas supply pipe 5 is evenly equipped with a first air inlet pipe 501, which is connected to the connecting hose 401. Placement plate 6, the main body of placement plate 6 is a circular plate structure, placement plate 6 is connected to device box 1 by bolts, controller 7 is fixedly installed on the upper end face of placement plate 6, and air pressure sensor 701 is installed on the outer end face of controller 7. Limiting card box 8, two sets of limiting card boxes 8 are symmetrically arranged, and the two limiting card boxes 8 are fixedly installed on the rear side plate surface of the device box 1. The inside of the limiting card box 8 is provided with a cavity 801. Pull rod 9 has an inverted U-shaped structure. The two vertical plates of pull rod 9 are slidably locked in the cavity 801 inside the limit card box 8.

[0022] The surface of the placement plate 6 is provided with a locking hole 601, and the upper part of the gas cylinder 4 is locked into the locking hole 601 on the surface of the placement plate 6.

[0023] Among them, a limiting block 201 is installed on the outer end surface of the second partition 2. The surface of the limiting block 201 is an arc-shaped structure. The limiting block 201 fits into the gas cylinder 4, which can fix the gas cylinder 4.

[0024] The first air inlet pipe 501 is equipped with an electrically controlled valve 5011, which is electrically connected to the controller 7. During use, the controller 7 sends a command to the electrically controlled valve 5011 on the surface of the first air inlet pipe 501. At this time, the high-pressure gas inside the gas cylinder 4 will flow outward, gradually increasing the air pressure inside the room, thus creating a pressure difference between the inside and outside of the room. The controller 7 is equipped with a pressure sensor 701, which can monitor the air pressure value inside the room in real time. When the air pressure reaches the threshold, a stop command is sent to the electrically controlled valve 5011, and the gas cylinder 4 stops expelling gas outward, maintaining the target pressure difference. At the same time, the air pressure data is recorded for airtightness calculation. At this time, it can be observed whether there is smoke escaping outward, thereby judging whether the airtightness of the doors and windows is good.

[0025] The device box 1 has a smoke generator 3 fixedly installed on the inner end face of the front side plate. The upper end of the smoke generator 3 is equipped with an exhaust pipe 301, and the lower end face of the gas supply pipe 5 is equipped with a second intake pipe 502. The second intake pipe 502 and the exhaust pipe 301 are connected by a flange. In use, the exhaust pipe 301 and the second intake pipe 502 at the lower end of the gas supply pipe 5 are connected by a flange so that the smoke generated by the smoke generator 3 can enter the gas supply pipe 5 and be discharged into the room with the airflow, which can show the air leakage points of the door and window gaps.

[0026] The upper end of the placement plate 6 is equipped with a fixing ring 602, and the gas supply pipe 5 is snapped into the upper part of the fixing ring 602. The fixing ring 602 can support the gas supply pipe 5.

[0027] The limit card box 8 has two connecting holes 802 on its surface, and the two vertical plates of the pull rod 9 have track grooves 901 on their surfaces. The track grooves 901 are fitted with fastening blocks 10, and the fastening blocks 10 have two fastening screws 1001 installed on their surfaces. The fastening screws 1001 are engaged in the connecting holes 802 on the surface of the limit card box 8, and a nut is connected to the surface of the fastening screws 1001. In use, the vertical plates of the pull rod 9 slide along the cavity 801 of the limit card box 8. After adjusting to a suitable height, the fastening screws 1001 of the fastening blocks 10 are engaged in the connecting holes 802 and the nuts are tightened to lock them, making it easy to drag and move the device.

[0028] The working principle of this embodiment: In this invention, the lower end of the device box 1 has wheels 101 for rapid movement. A handle 102 is installed at each end of the device box 1 for carrying assistance. The two vertical plates of the pull rod 9 can slide and fold up along the cavity 801 of the limiting card box 8, achieving a folding storage function. Multiple second partitions 2 are evenly installed inside the device box 1. A gas cylinder 4 is installed between two adjacent second partitions 2, serving as a gas source, which supplies gas to T via a connecting hose 401. Gas is supplied through a gas pipeline 5. A first inlet pipe 501 at the front end of the gas pipeline 5 receives the gas. An electrically controlled valve 5011 is installed on the surface of the first inlet pipe 501. The electrically controlled valve 5011 is electrically controlled by a controller 7, which can control the opening and closing of the valve 5011. A smoke generator 3 is installed inside the device box 1. It is connected to the second inlet pipe 502 at the lower end of the gas pipeline 5 via a flange through an outlet pipe 301. This allows the smoke generated by the smoke generator 3 to enter the gas pipeline 5 and be discharged into the room with the airflow. This system can detect leaks in door and window gaps. When testing the airtightness of doors and windows, the doors and windows can be closed. Then, the controller 7 sends a command to the electrically controlled valve 5011 on the surface of the first inlet pipe 501. At this time, the high-pressure gas inside the gas cylinder 4 flows outward, gradually increasing the gas pressure inside the room. The pressure difference between the inside and outside of the room is created by the pressure sensor 701 installed on the surface of the controller 7. The pressure sensor 701 can monitor the air pressure value inside the room in real time. When the air pressure reaches the threshold, it sends a stop command to the electric control valve 5011, and the gas cylinder 4 stops expelling gas to maintain the target pressure difference. At the same time, the air pressure data is recorded for airtightness calculation. At this time, it can be observed whether there is smoke escaping outward, so as to determine whether the airtightness of the doors and windows is good. The placement plate 6 is connected to the device box 1 by bolts, and the upper part of the gas cylinder 4 is locked in the locking hole 601 on the surface of the placement plate 6, which can realize the limiting and fixing of the gas cylinder 4. The vertical plate of the pull rod 9 slides along the cavity 801 of the limiting card box 8. After adjusting to a suitable height, the fastening screw 1001 of the fastening block 10 is locked into the connection hole 802 and the nut is turned to lock it, which facilitates the dragging and moving of the device.

Claims

1. A foldable and retractable on-site testing device for the airtightness of building doors and windows, characterized in that, Includes: a device box (1), with four wheels (101) fixedly installed on the lower end face of the device box (1), a handle (102) respectively installed on the outer end face of the left and right side plates of the device box (1), and a first partition (103) installed on the inner end face of the device box (1), with both ends of the first partition (103) fixedly connected to the left and right side plates of the device box (1); a second partition (2), which is installed inside the device box (1), with the front end of the second partition (2) fixedly connected to the first partition (103) and the rear end of the second partition (2) fixedly connected to the rear end side plate of the device box (1); a gas cylinder (4), which is located inside the device box (1), with a connecting hose (401) installed on the upper end face of the gas cylinder (4); and a gas transmission pipe (5), which has a T-shaped structure and transmits gas. The front end face of the tube (5) is uniformly equipped with a first air inlet pipe (501), which is connected to a connecting hose (401); the placement plate (6) is a circular plate structure, and the placement plate (6) is connected to the device box (1) by bolts. The upper end face of the placement plate (6) is fixedly installed with a controller (7), and the outer end face of the controller (7) is equipped with a pressure sensor (701); the limit card box (8) is symmetrically provided with two sets of limit card boxes (8), and the two limit card boxes (8) are fixedly installed on the rear side plate surface of the device box (1). The inside of the limit card box (8) is provided with a cavity (801); the pull rod (9) is an inverted U-shaped structure, and the two vertical plates of the pull rod (9) are slidably locked in the cavity (801) inside the limit card box (8).

2. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, The surface of the placement plate (6) is provided with a locking hole (601), and the upper part of the gas cylinder (4) is locked in the locking hole (601) on the surface of the placement plate (6).

3. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, A limiting block (201) is installed on the outer end surface of the second partition (2). The surface of the limiting block (201) is an arc-shaped structure, and the limiting block (201) is in contact with the gas cylinder (4).

4. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, An electrically controlled valve (5011) is installed on the surface of the first air intake pipe (501), and the electrically controlled valve (5011) is electrically connected to the controller (7).

5. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, A smoke generator (3) is fixedly installed on the inner end face of the front side plate of the device box (1). An air outlet pipe (301) is installed on the upper end of the smoke generator (3), and a second air inlet pipe (502) is installed on the lower end face of the air supply pipe (5). The second air inlet pipe (502) and the air outlet pipe (301) are connected by a flange.

6. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, A fixing ring (602) is installed on the upper end face of the placement plate (6), and the gas supply pipe (5) is snapped into the upper part of the fixing ring (602).

7. The foldable and retractable on-site airtightness testing device for building doors and windows according to claim 1, characterized in that, The surface of the limiting card box (8) has two connecting holes (802), and the surfaces of the two vertical plates of the pull rod (9) have track grooves (901). The track grooves (901) are fitted with fastening blocks (10) inside.

8. The foldable and retractable on-site testing device for the airtightness of building doors and windows according to claim 7, characterized in that, Two fastening screws (1001) are installed on the surface of the fastening block (10). The fastening screws (1001) are engaged in the connecting holes (802) on the surface of the limiting card box (8). A nut is connected to the surface of the fastening screws (1001).

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