Building ventilation detection device

Abstract

The utility model discloses a building ventilation detection device which comprises a mounting seat and a wind speed detector, the mounting seat is provided with an inner cavity, a rotating shaft is rotatably inserted in the inner cavity, at least three groups of telescopic rods are fixedly arranged on the outer side wall of the mounting seat at intervals, each telescopic rod comprises a fixed rod and a sliding rod, one end of each fixed rod is fixedly connected with the outer side wall of the mounting seat, and the other end of each fixed rod is fixedly connected with the wind speed detector. First screws are rotationally inserted into the fixing rods, one ends of the sliding rods are slidably inserted into the other ends of the fixing rods and are sleeved with the first screws in a matched mode, supporting blocks are arranged at the other ends of the sliding rods, the first screws are in transmission connection with a rotating shaft, and the rotating shaft is connected with the rear side wall of the mounting base through a locking mechanism. The wind speed detector is arranged on the front side of the mounting base through the displacement mechanism. Through the above arrangement, the device can be installed in ventilation pipelines with various diameters, the operation steps are simplified, and the stability of the wind speed detector in the measurement process is improved.

Description

Technical Field

[0001] This utility model belongs to the field of engineering testing technology, and specifically relates to a building ventilation testing device. Background Technology

[0002] To introduce fresh air into the room to replace stale air, existing buildings are generally equipped with ventilation systems consisting of exhaust equipment and ventilation ducts. In order to ensure that the performance of the ventilation system meets the design and specification requirements, inspectors generally use handheld anemometers to test the wind speed in the ventilation ducts.

[0003] Chinese patent CN213809958U discloses a wind speed detection device for fire ventilation equipment. The device includes a central block with at least three hollow columns fixedly connected to it. Each hollow column has a sliding rod slidably connected inside it. Each sliding rod has a screw at its upper end for fixing it. A fixed clamping plate is fixedly connected to the end of the sliding rod away from the hollow column. A fixing plate is fixedly connected to the upper surface of the fixed clamping plate. A threaded rod is rotatably connected to the fixing plate. A movable clamping plate is externally threaded onto the threaded rod. The device can be fixedly clamped onto ventilation ducts of different diameters by using the fixed and movable clamping plates on the sliding rod.

[0004] In the process of using the above solution, in order to adapt to air ducts of different diameters, it is first necessary to rotate the screw knobs on multiple hollow columns one by one to adjust the length of the sliding rod extending out of the hollow column, and then rotate the threaded rods on each fixed clamp plate one by one. The operation steps are relatively complicated and the installation efficiency is low. Utility Model Content

[0005] The present invention aims to provide a building ventilation detection device to solve the problem of low installation efficiency in the above-mentioned solutions.

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

[0007] A building ventilation testing device includes a mounting base and an anemometer. The mounting base has an inner cavity in which a rotating shaft is rotatably inserted. At least three sets of telescopic rods are fixedly arranged at intervals on the outer wall of the mounting base. Each telescopic rod includes a fixed rod and a sliding rod. One end of the fixed rod is fixedly connected to the outer wall of the mounting base, and a first screw is rotatably inserted inside the fixed rod. One end of the sliding rod is slidably inserted into the other end of the fixed rod and is fitted onto the first screw. A support block is provided at the other end of the sliding rod. Each first screw is kinetically connected to the rotating shaft. The rotating shaft is connected to the rear side wall of the mounting base through a locking mechanism. The anemometer is disposed on the front side of the mounting base through a displacement mechanism.

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

[0009] In the initial state, each of the telescopic rods is in the retracted state. When it is necessary to test the exhaust volume of the ventilation system, this device is placed inside the ventilation duct. Then, the rotating shaft is rotated, causing the rotating shaft to drive each of the first screws to rotate. Because the fixed rod prevents the sliding rod from rotating, each sliding rod moves with the rotation of the first screw, thereby extending each set of telescopic rods simultaneously until each of the support blocks presses against the inner wall of the ventilation duct. At this time, the locking mechanism is closed, allowing the anemometer to detect the wind speed inside the ventilation duct.

[0010] With the above setup, multiple sets of telescopic rods can be extended simultaneously by rotating the shaft, so that multiple support blocks are pressed against the inner wall of the ventilation duct. This allows the device to be installed in ventilation ducts of various diameters, improving the stability of the anemometer during the measurement process. It also simplifies the operation steps and solves the problem of low installation efficiency in the above solutions.

[0011] In this invention, a first bevel gear is fixedly sleeved on the outer wall of the rotating shaft within the inner cavity, and a second bevel gear meshing with the first bevel gear is fixedly sleeved on the outer wall of one end of each of the first screws within the inner cavity. This arrangement achieves the goal of simultaneously driving multiple first screws to rotate.

[0012] In this utility model, a prism is fixedly provided on the rear side wall of the rotating shaft, and a groove is provided on the rear side wall of the prism. The locking mechanism includes a limiting block that is slidably sleeved on the prism and a tension spring provided in the groove. The two ends of the tension spring are respectively connected to the end wall of the groove and the limiting block. The rear side wall of the mounting base is recessed outside the rotating shaft and a limiting groove that cooperates with the limiting block.

[0013] The principle and effects of this technical solution:

[0014] In the initial state, the tension spring pulls the limit block into the limit groove. When it is necessary to rotate the shaft, pull the limit block backward to disengage it from the limit groove. After rotating the shaft so that the support blocks at the ends of each telescopic rod press against the inner wall of the ventilation duct, release the limit block. The tension spring then pulls the limit block back into the limit groove, and the limit groove prevents the limit block from rotating further.

[0015] With the above settings, the rotating shaft can be prevented from continuing to rotate after the support block is moved to the appropriate position, ensuring the stability of the device during use.

[0016] In this utility model, a connecting rod is fixedly provided at the other end of the sliding rod, a rod sleeve is slidably sleeved on the outside of the connecting rod, the support block is fixedly provided at the end of the rod sleeve away from the sliding rod, and a spring is sleeved on the connecting rod, with the two ends of the spring connected to the sliding rod and the rod sleeve respectively.

[0017] The principle and effects of this technical solution:

[0018] After rotating the shaft until each support block contacts the inner wall of the ventilation duct, continue rotating the shaft to extend the telescopic rod. The connecting rod continues to insert into the rod sleeve. At this time, the rod sleeve and sliding rod compress the spring, giving the spring elasticity.

[0019] With the above configuration, by using the sleeve and sliding rod to compress the spring, the inspector can easily rotate the limiting block to align with the limiting groove. At the same time, the spring pushes the support block at the end of the sleeve to press against the inner wall of the ventilation duct. This avoids the situation where the support block cannot press against the inner wall of the ventilation duct after the telescopic rod retracts due to vibration of the ventilation duct, thereby improving the stability of the device during use.

[0020] In this invention, the displacement mechanism includes a movable frame. The rear sidewall of the movable frame is rotatably connected to the front sidewall of the mounting base. A second screw is rotatably mounted on the front side of the movable frame, and a slider is fitted around the second screw. The slider slides against the movable frame, and the anemometer is fixedly mounted on the top of the slider. Rotating the second screw causes the slider to move left and right as the second screw rotates because the movable frame prevents the slider from rotating. This design allows for convenient adjustment of the anemometer's position by the testing personnel, enabling the device to test multiple points within the ventilation duct.

[0021] In this invention, a third screw is threaded through the mounting base along a transverse thread, and one end of the third screw can abut against the rear side wall of the movable frame. With this configuration, the measurable range of the anemometer can be further increased by rotating the movable frame, and by rotating the third screw to press its end against the movable frame, rotation of the movable frame during measurement can be prevented.

[0022] In this invention, a drive component that is connected to the second screw is fixedly mounted on the front side wall of the movable frame. This arrangement facilitates the rotation of the second screw by the inspection personnel, further improving the installation efficiency of the device. Attached Figure Description

[0023] Figure 1 This is a front axonometric drawing of the present invention;

[0024] Figure 2 This is a partial isometric sectional view of the present invention;

[0025] Figure 3 This is a rear-view axonometric drawing of the present invention. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0027] The reference numerals in the accompanying drawings include: 10, mounting base; 11, inner cavity; 12, limiting groove; 13, third screw; 20, rotating shaft; 21, first bevel gear; 22, prism; 23, groove; 30, telescopic rod; 31, fixed rod; 32, sliding rod; 33, first screw; 331, second bevel gear; 34, support block; 35, connecting rod; 36, rod sleeve; 37, spring; 41, limiting block; 42, tension spring; 50, anemometer; 61, movable frame; 62, second screw; 63, slider; 64, driving component.

[0028] Example:

[0029] As attached Figure 1-3 As shown, this utility model discloses a building ventilation detection device, including a mounting base 10 and an anemometer 50. The mounting base 10 has an inner cavity 11, in which a rotating shaft 20 is rotatably inserted. At least three sets of telescopic rods 30 are fixedly arranged at intervals on the outer side wall of the mounting base 10. Each telescopic rod 30 includes a fixed rod 31 and a sliding rod 32. One end of the fixed rod 31 is fixedly connected to the outer side wall of the mounting base 10, and a first screw 33 is rotatably inserted inside the fixed rod 31. One end of the sliding rod 32 is slidably inserted into the other end of the fixed rod 31 and is fitted onto the first screw 33. A support block 34 is provided at the other end of the sliding rod 32. Each first screw 33 is kinetically connected to the rotating shaft 20. The rotating shaft 20 is connected to the rear side wall of the mounting base 10 through a locking mechanism. The anemometer 50 is disposed on the front side of the mounting base 10 through a displacement mechanism.

[0030] In this embodiment, the outer wall of the rotating shaft 20 is fixedly sleeved with a first bevel gear 21 in the inner cavity 11, and the outer wall of one end of each of the first screws 33 is fixedly sleeved with a second bevel gear 331 that meshes with the first bevel gear 21 in the inner cavity 11.

[0031] In this embodiment, a prism 22 is fixedly provided on the rear side wall of the rotating shaft 20, and a groove 23 is provided on the rear side wall of the prism 22. The locking mechanism includes a limiting block 41 slidably sleeved on the prism 22 and a tension spring 42 provided in the groove 23. The two ends of the tension spring 42 are respectively connected to the end wall of the groove 23 and the limiting block 41. The rear side wall of the mounting base 10 is recessed outside the rotating shaft 20 and a limiting groove 12 that cooperates with the limiting block 41.

[0032] In this embodiment, a connecting rod 35 is fixedly provided at the other end of the sliding rod 32, and a rod sleeve 36 is slidably sleeved on the outside of the connecting rod 35. The support block 34 is fixedly provided at the end of the rod sleeve 36 away from the sliding rod 32. A spring 37 is sleeved on the connecting rod 35, and the two ends of the spring 37 are respectively connected to the sliding rod 32 and the rod sleeve 36.

[0033] In this embodiment, the displacement mechanism includes a movable frame 61, the rear side wall of the movable frame 61 is rotatably connected to the front side wall of the mounting base 10, a second screw 62 is rotatably provided on the front side of the movable frame 61, and a slider 63 is sleeved on the outside of the second screw 62. The slider 63 slides against the movable frame 61, and the wind speed detector 50 is fixedly installed on the top of the slider 63.

[0034] In this embodiment, the mounting base 10 is threaded with a third screw 13 along a transverse thread, and one end of the third screw 13 can abut against the rear side wall of the movable frame 61.

[0035] In this embodiment, a drive member 64 that is connected to the second screw 62 is fixedly provided on the front side wall of the movable frame 61.

[0036] The specific implementation process is as follows:

[0037] In the initial state, each of the telescopic rods 30 is in a retracted state. When it is necessary to test the exhaust volume of the ventilation system, this device is placed inside the ventilation duct. Then, the rotating shaft 20 is rotated, causing the rotating shaft 20 to drive each of the first screws 33 to rotate. Because the fixed rod 31 prevents the sliding rod 32 from rotating, each sliding rod 32 moves with the rotation of the first screw 33, thereby extending each set of telescopic rods 30 simultaneously until each of the support blocks 34 presses against the inner wall of the ventilation duct. At this time, the locking mechanism is closed, allowing the anemometer 50 to detect the wind speed inside the ventilation duct. In some application scenarios, the telescopic rods 30 can also be retracted to clamp the inner wall of each of the support blocks 34 against the outer wall of the ventilation duct, thus fixing this device on the ventilation duct.

[0038] In the initial state, the tension spring 42 pulls the limiting block 41 to engage in the limiting groove 12. When it is necessary to rotate the rotating shaft 20, the limiting block 41 is pulled backward to disengage it from the limiting groove 12. After rotating the rotating shaft 20 so that the support blocks 34 at the ends of each telescopic rod 30 press against the inner wall of the ventilation duct, the limiting block 41 is released. The tension spring 42 pulls the limiting block 41 to engage in the limiting groove 12 again, and the limiting groove 12 prevents the limiting block 41 from continuing to rotate.

[0039] After rotating the shaft 20 until each support block 34 contacts the inner wall of the ventilation duct, continue rotating the shaft 20 to extend the telescopic rod 30. The connecting rod 35 continues to be inserted into the rod sleeve 36. At this time, the rod sleeve 36 and the sliding rod 32 compress the spring 37, so that the spring 37 has elasticity.

[0040] 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 building ventilation detection device, characterized in that, include: The mounting base has an inner cavity in which a rotating shaft is rotatably inserted, and at least three sets of telescopic rods are fixedly arranged at intervals on the outer side wall of the mounting base. The telescopic rod includes a fixed rod and a sliding rod. One end of the fixed rod is fixedly connected to the outer wall of the mounting base, and a first screw is rotatably inserted into the fixed rod. One end of the sliding rod is slidably inserted into the other end of the fixed rod and is fitted onto the first screw. A support block is provided at the other end of the sliding rod. Each of the first screws is connected to a rotating shaft. The rotating shaft is connected to the rear side wall of the mounting base through a locking mechanism. An anemometer, wherein the anemometer is mounted on the front side of the mounting base via a displacement mechanism.

2. The building ventilation detection device as described in claim 1, characterized in that: The outer wall of the rotating shaft is fixedly fitted with a first bevel gear in the inner cavity, and the outer wall of one end of each of the first screws is fixedly fitted with a second bevel gear that meshes with the first bevel gear in the inner cavity.

3. The building ventilation detection device as described in claim 2, characterized in that: A prism is fixedly provided on the rear side wall of the rotating shaft, and a groove is provided on the rear side wall of the prism. The locking mechanism includes a limiting block that is slidably sleeved on the prism and a tension spring provided in the groove. The two ends of the tension spring are respectively connected to the end wall of the groove and the limiting block. The rear side wall of the mounting base is recessed outside the rotating shaft and a limiting groove that cooperates with the limiting block.

4. The building ventilation detection device as described in any one of claims 1-3, characterized in that: A connecting rod is fixedly installed at the other end of the sliding rod, and a rod sleeve is slidably fitted on the outside of the connecting rod. The support block is fixedly installed at the end of the rod sleeve away from the sliding rod, and a spring is fitted on the outside of the connecting rod. The two ends of the spring are respectively connected to the sliding rod and the rod sleeve.

5. The building ventilation detection device as described in claim 1, characterized in that: The displacement mechanism includes a movable frame, the rear side wall of which is rotatably connected to the front side wall of the mounting base. A second screw is rotatably provided on the front side of the movable frame, and a slider is sleeved on the outside of the second screw. The slider slides against the movable frame, and the wind speed detector is fixedly installed on the top of the slider.

6. The building ventilation detection device as described in claim 5, characterized in that: The mounting base is threaded with a third screw along a transverse thread, and one end of the third screw can abut against the rear side wall of the movable frame.

7. The building ventilation detection device as described in claim 6, characterized in that: The front side wall of the movable frame is fixedly equipped with a driving component that is connected to the second screw drive.

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