On-site airtight performance detection device for building doors and windows

Abstract

The utility model discloses a building door and window on-site air tightness detection device, which comprises a base, a film, four connecting blocks and an air tightness detector, a connecting cylinder arranged along the transverse direction is arranged above the base, the film is arranged at one end of the connecting cylinder, a mounting ring is sleeved outside the connecting cylinder in a sliding manner, the number of the connecting blocks is four, and the air tightness detector is arranged on the mounting ring. Sliding rails and transverse rods are fixedly arranged on the two adjacent side walls of the connecting block respectively, sliding grooves matched with the sliding rails are formed in the end walls of the transverse rods, the sliding rails are slidably inserted into the corresponding sliding grooves respectively and connected with the corresponding transverse rods through limiting mechanisms respectively, one end wall of the connecting block is rotationally connected with connecting rods, and the ends of the connecting rods are rotationally connected with the mounting ring. The air tightness detector is fixedly arranged at the top of the base, an air outlet of the air tightness detector is communicated with the other end of the connecting cylinder through a telescopic pipe, a pressure measuring pipe is further arranged at the top of the air tightness detector, and the end of the pressure measuring pipe penetrates through the thin film.

Description

Technical Field

[0001] This utility model belongs to the field of engineering testing technology, specifically relating to a device for on-site testing of the air tightness performance of building doors and windows. Background Technology

[0002] To ensure that doors and windows can effectively prevent air circulation when closed, thereby improving the building's energy efficiency and indoor comfort, it is necessary to conduct on-site airtightness tests on the doors and windows installed inside the building.

[0003] Chinese patent CN219178839U discloses an on-site testing device for the airtightness of building doors and windows. The device includes a base and a frame structure. The base is connected to the frame structure via a lifting and pressing structure. A membrane is fixedly connected to the side of the frame structure away from the lifting and pressing structure. An inflation tube is fixedly connected to the middle of the membrane, and a pressure detector is fixedly connected to the other end of the membrane. A blower is fixedly connected to the top of the base, and the blower's outlet is fixedly connected to the inflation tube via a connecting pipe. The frame structure includes a crossbar, with a double-ended screw rod movably connected to one end of the crossbar. Both ends of the double-ended screw rod are threaded with moving blocks. Two moving blocks in the vertical direction are connected via a telescopic tube. This design utilizes the frame structure to allow the dimensions of the rectangular structure formed by the crossbar and moving blocks to be changed according to requirements, enabling the frame structure to adapt to doors and windows of different sizes.

[0004] When using the above solution, the distance between the two moving blocks is adjusted by rotating the double-ended screw. Because the length of the crossbar is fixed, the two ends of the crossbar may protrude from the two moving blocks, making it impossible to test the airtightness of doors and windows near the corner of the wall. This limits the applicable scenarios. Utility Model Content

[0005] The present invention aims to provide a device for on-site testing of the air tightness performance of building doors and windows, so as to solve the problem that the above-mentioned solutions have limited applicable scenarios.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The on-site airtightness testing device for building doors and windows includes a base, a membrane, connecting blocks, and an airtightness tester. A connecting cylinder arranged horizontally is positioned above the base. The membrane is located at one end of the connecting cylinder, and an mounting ring is slidably fitted around the connecting cylinder. Four connecting blocks are provided, aligned in pairs. Slide rails and crossbars are fixedly installed on the two adjacent side walls of each connecting block. The end wall of the crossbar has a groove that mates with the slide rail. Each slide rail is slidably inserted into its corresponding groove and connected to its corresponding crossbar via a limiting mechanism. A connecting rod is rotatably connected to one end wall of each connecting block, and the end of each connecting rod is rotatably connected to the mounting ring. The airtightness tester is fixedly mounted on the top of the base. The air outlet of the airtightness tester is connected to the other end of the connecting cylinder via a telescopic tube. A pressure measuring tube is also installed on the top of the airtightness tester, with its end passing through the membrane.

[0008] The principle and effects of this technical solution:

[0009] First, each slide rail is slidably inserted into its corresponding groove. Then, each slide rail is slid according to the dimensions of the door / window to be tested, ensuring that each slide rail and crossbar are outside the projected area of ​​the door / window. Next, each slide rail is limited by a limiting mechanism to prevent further movement relative to the corresponding crossbar. A membrane is placed at one end of the connecting cylinder, and a movable mounting ring is moved to press each slide rail and crossbar firmly against the wall. Then, the end of the pressure measuring tube passes through the membrane, and the airtightness tester blows air through the connecting cylinder and telescopic tube into the cavity formed by the membrane and the door / window to be tested. The pressure inside the cavity is measured using the pressure measuring tube, allowing for on-site evaluation of the airtightness performance of the door / window.

[0010] By using the above-mentioned settings, the device can perform airtightness tests on doors and windows of different sizes by sliding the slide rail into the corresponding groove. At the same time, it can reduce the area of ​​the device protruding from the door or window to be tested, and enable the device to test doors and windows near the corner of the wall, thus solving the problem of the limited applicability of the above-mentioned solutions.

[0011] In this invention, an electric actuator is fixedly mounted vertically at the top of the base, and a mounting base is fixedly mounted at the output end of the electric actuator. The connecting cylinder is fixedly inserted through the mounting base. This configuration enables the connecting cylinder to move up and down, improving the practicality of the device.

[0012] In this invention, a limiting groove is recessed on the outer wall of the connecting cylinder, and a limiting block that is slidably embedded in the limiting groove is fixedly provided on the inner wall of the mounting ring. This design prevents the mounting ring from rotating axially along the connecting cylinder.

[0013] In this invention, a movable ring is threadedly fitted onto the outer wall of the connecting cylinder between the mounting ring and the mounting base. This arrangement allows the movable ring to move axially along the connecting cylinder, pushing the mounting ring and preventing it from moving away from the wall once it has reached the appropriate position.

[0014] In this invention, the connecting block and the connecting rod are movably connected via a ball joint, and the end of the connecting rod is movably connected to the outer wall of the mounting ring via a ball joint. This configuration enables the device to perform airtightness testing on doors and windows with various aspect ratios, further expanding its applicable scenarios.

[0015] In this invention, the limiting mechanism includes a bolt, the bolt being threaded through the crossbar, with one end extending into the slide groove. By rotating the bolt, the bolt extends into the slide groove and presses against the slide rail, thus preventing displacement of the slide rail relative to the crossbar.

[0016] This invention also includes a fixing cylinder, the outer wall of which is threadedly connected to the inner wall of the connecting cylinder. The film is sleeved on the fixing cylinder, and an outer edge is fixedly provided on the outer periphery of the fixing cylinder at the end away from the connecting cylinder. With the above arrangement, by rotating the fixing cylinder, the outer edge of the fixing cylinder is brought close to the end of the connecting cylinder until the outer edge clamps the film with the end of the connecting cylinder, thereby connecting the film to the end of the connecting cylinder. Attached Figure Description

[0017] Figure 1 This is an isometric view of the overall structure of this utility model;

[0018] Figure 2 Disassembly of the components of this utility model Figure 1 ;

[0019] Figure 3 Disassembly of the components of this utility model Figure 2 ;

[0020] Figure 4 Disassembly of the components of this utility model Figure 3 . Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0022] The reference numerals in the accompanying drawings include: 10, base; 11, electric actuator; 12, mounting base; 20, connecting cylinder; 21, limiting groove; 22, movable ring; 30, mounting ring; 31, limiting block; 40, diaphragm; 50, connecting block; 51, slide rail; 52, crossbar; 521, slide groove; 60, connecting rod; 70, airtightness tester; 71, telescopic tube; 72, pressure measuring tube; 80, bolt; 90, fixing cylinder; 91, outer edge.

[0023] Example:

[0024] As attached Figure 1-4 As shown, this utility model discloses an on-site airtightness testing device for building doors and windows, which includes a base 10, a membrane 40, connecting blocks 50, and an airtightness tester 70. A connecting cylinder 20 arranged horizontally is arranged above the base 10. The membrane 40 is disposed at one end of the connecting cylinder 20. An installation ring 30 is slidably sleeved on the outside of the connecting cylinder 20. Four connecting blocks 50 are provided, and the four connecting blocks 50 are aligned in pairs. A slide rail 51 and a crossbar 52 are respectively fixedly disposed on two adjacent side walls of the connecting blocks 50. The end wall of the crossbar 52 has an opening that cooperates with the slide rail 51. The slide groove 521 is provided, and each of the slide rails 51 is slidably inserted into the corresponding slide groove 521 and connected to the corresponding crossbar 52 through the limiting mechanism. One end wall of the connecting block 50 is rotatably connected to the connecting rod 60, and the end of each connecting rod 60 is rotatably connected to the mounting ring 30. The air tightness tester 70 is fixedly installed on the top of the base 10. The air outlet of the air tightness tester 70 is connected to the other end of the connecting cylinder 20 through the telescopic tube 71. The top of the air tightness tester 70 is also provided with a pressure measuring tube 72, and the end of the pressure measuring tube 72 passes through the membrane 40.

[0025] In this embodiment, an electric actuator 11 is fixedly mounted vertically on the top of the base 10, and a mounting base 12 is fixedly mounted on the output end of the electric actuator 11. The connecting cylinder 20 is fixedly inserted through the mounting base 12.

[0026] In this embodiment, the outer side wall of the connecting cylinder 20 is recessed with a limiting groove 21, and the inner side wall of the mounting ring 30 is fixedly provided with a limiting block 31 that is slidably embedded in the limiting groove 21. The length direction of the limiting groove 21 is parallel to the axis of the connecting cylinder 20.

[0027] In this embodiment, a movable ring 22 is threadedly fitted on the outer side wall of the connecting cylinder 20 between the mounting ring 30 and the mounting base 12.

[0028] In this embodiment, the connecting block 50 and the connecting rod 60 are movably connected by a ball joint, and the end of the connecting rod 60 is movably connected to the outer side wall of the mounting ring 30 by a ball joint.

[0029] In this embodiment, the limiting mechanism includes a bolt 80, which is threaded through the crossbar 52, and one end of the bolt 80 extends into the groove 521.

[0030] In this embodiment, a fixing cylinder 90 is also included. The outer wall of the fixing cylinder 90 is threadedly connected to the inner wall of the connecting cylinder 20. The film 40 is sleeved on the fixing cylinder 90. An outer edge 91 is fixedly provided on the outer periphery of the fixing cylinder 90 away from the connecting cylinder 20.

[0031] The specific implementation process is as follows:

[0032] First, each slide rail 51 is slidably inserted into its corresponding slide groove 521. The slide rail 51 is then slid according to the size of the door or window to be tested, so that each slide rail 51 and each crossbar 52 are outside the orthographic projection range of the door or window to be tested. Then, each slide rail 51 is limited by a limiting mechanism to prevent it from moving relative to the corresponding crossbar 52. After a membrane 40 is set at one end of the connecting cylinder 20, the installation ring 30 is moved so that each slide rail 51 and each crossbar 52 presses the membrane 40 against the wall. Then, the end of the pressure measuring tube 72 passes through the membrane 40, and the air tightness tester 70 blows air into the cavity formed by the membrane 40 and the door or window to be tested through the connecting cylinder and the telescopic tube 71. The pressure in the cavity is measured by the pressure measuring tube 72, and the air tightness performance of the door or window to be tested is evaluated on site.

[0033] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for on-site airtightness testing of building doors and windows, characterized in that, include: A base, with a connecting cylinder arranged laterally on top of the base; A thin film is disposed at one end of a connecting cylinder, and an installation ring is slidably sleeved on the outside of the connecting cylinder; The connecting block comprises four blocks, which are aligned in pairs. Each connecting block has a slide rail and a crossbar fixedly mounted on its two adjacent sidewalls. The end wall of the crossbar has a groove that mates with the slide rail. Each slide rail is slidably inserted into its corresponding groove and connected to its corresponding crossbar via a limiting mechanism. One end wall of the connecting block is rotatably connected to a connecting rod, and the end of each connecting rod is rotatably connected to a mounting ring. An air tightness tester is fixedly installed on the top of the base. The air outlet of the air tightness tester is connected to the other end of the connecting cylinder through a telescopic tube. A pressure measuring tube is also installed on the top of the air tightness tester, and the end of the pressure measuring tube is inserted through a membrane.

2. The on-site airtightness testing device for building doors and windows as described in claim 1, characterized in that: An electric actuator is fixedly installed vertically at the top of the base, and a mounting base is fixedly installed at the output end of the electric actuator. The connecting cylinder is fixedly inserted through the mounting base.

3. The on-site airtightness testing device for building doors and windows as described in claim 2, characterized in that: The outer side wall of the connecting cylinder is recessed with a limiting groove, and the inner side wall of the mounting ring is fixedly provided with a limiting block that is slidably embedded in the limiting groove.

4. The on-site airtightness testing device for building doors and windows as described in claim 3, characterized in that: A movable ring is threaded between the mounting ring and the mounting base on the outer wall of the connecting cylinder.

5. The on-site airtightness testing device for building doors and windows as described in claim 4, characterized in that: The connecting block and the connecting rod are movably connected via a ball joint, and the end of the connecting rod is movably connected to the outer wall of the mounting ring via a ball joint.

6. The on-site airtightness testing device for building doors and windows as described in claim 5, characterized in that: The limiting mechanism includes a bolt, the bolt being threaded through the crossbar, and one end of the bolt extending into the groove.

7. The on-site airtightness testing device for building doors and windows as described in any one of claims 1-6, characterized in that: It also includes a fixing cylinder, the outer wall of which is threadedly connected to the inner wall of the connecting cylinder, the film being sleeved on the fixing cylinder, and an outer edge being fixedly provided on the outer periphery of the fixing cylinder at the end away from the connecting cylinder.

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