Ventilation pipeline wind pressure measuring device

Abstract

The utility model provides a ventilating duct wind pressure measuring device, and relates to the technical field of wind pressure measurement, the ventilating duct wind pressure measuring device comprises a housing and an installation assembly, one side of the housing is provided with a cable, one side of the housing is provided with a display screen, one side of the housing is provided with a measuring rod, one side of the housing is provided with a take-up device through the installation assembly, and the other side of the housing is provided with a wind pressure sensor. The take-up device comprises a placing plate, one side of the placing plate is in threaded connection with a threaded rod, one side of the threaded rod is rotatably connected with a fixing plate, one side of the placing plate is fixedly connected with a take-up rod, one side of the threaded rod is fixedly connected with an operation block, and one side of the operation block is fixedly connected with a plurality of anti-skid blocks. According to the wind pressure measuring device, by using the take-up device, the cable can be stored and fixed, and the situation that the cable is easily entangled together when wind pressure measurement is finished and the wind pressure sensor is stored is avoided, so that the use effect of the wind pressure measuring device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind pressure measurement, in particular to a ventilation duct wind pressure measuring device. Background Art

[0002] Wind pressure measuring devices are equipment used to measure and monitor wind pressure changes and are widely used in construction, ventilation, HVAC, industry and other fields.

[0003] When measuring the partial pressure of the ventilation duct, the measuring rod of the wind pressure sensor is connected to the ventilation duct, and then the cable inside the shell is connected to other devices. The result is output through the display screen. The wind pressure sensor usually includes a piezoresistive element, which is covered by a layer of elastic film. Its interior is divided into two isolated chambers. When the airflow passes through the sensor, the pressure generated by the airflow on the diaphragm causes the film to bend slightly. This bending causes the pressure in the chambers on both sides of the film to change. The pressure change on both sides of the diaphragm is detected by the electronic components inside the sensor. The electronic components then convert the detected resistance change into an electrical signal output. This electrical signal corresponds to the input wind pressure. After the wind pressure measurement is completed, when the wind pressure sensor is stored, the cable is easily entangled and knotted together, and then the cable needs to be untied before use next time, which causes problems affecting the use effect of the wind pressure measuring device. Utility Model Content

[0004] The utility model proposes a ventilation duct wind pressure measuring device to solve the problem that after wind pressure measurement is completed and the wind pressure sensor is stored, the cables are easily entangled and knotted together, which causes the cables to need to be untied before use next time, thereby affecting the use effect of the wind pressure measuring device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a wind pressure measuring device, comprising a shell and an installation assembly, a cable is provided on one side of the shell, a display screen is provided on one side of the shell, a measuring rod is provided on one side of the shell, and a wire-reeling device is provided on one side of the shell with the aid of the installation assembly, the wire-reeling device comprises a placing plate, a threaded rod is threadedly connected to one side of the placing plate, a fixing plate is rotatably connected to one side of the threaded rod, and an operating block is fixedly connected to one side of the threaded rod.

[0006] The effect achieved by the above components is: when measuring the partial pressure of the ventilation duct, the measuring rod of the wind pressure sensor will be connected to the ventilation duct, and then the cable inside the shell will be connected to other devices, and the result will be output through the display screen. The wind pressure sensor usually includes a piezoresistive element, which is covered by a layer of elastic film and is divided into two isolated chambers. When the airflow passes through the sensor, the pressure of the airflow on the diaphragm will cause the film to bend slightly. This bending will cause the pressure in the chambers on both sides of the film to change. The pressure change on both sides of the diaphragm will be detected by the electronic components inside the sensor, and then the electronic components will convert the detected resistance change into an electrical signal output. This electrical signal corresponds to the input wind pressure. After measuring the wind pressure, the cable is wound around the take-up rod, and then the operating block is rotated to make the threaded rod rotate on the placement plate. The threaded rod then drives the fixing plate close to the take-up rod, and then the through hole on the fixing plate is penetrated by the take-up rod. Then the fixing plate squeezes and fixes the cable wound on the take-up rod. By using the take-up device, the cable can be stored and fixed, avoiding the situation where the cables are easily entangled when the wind pressure measurement is completed and the wind pressure sensor is stored, thereby improving the use effect of the wind pressure measuring device.

[0007] Preferably, a plurality of anti-sliding blocks are fixedly connected to one side of the operating block, and the plurality of anti-sliding blocks are arranged at equal distances on one side of the operating block.

[0008] The effect achieved by the above components is: by using the anti-slip block, the friction between the operating block and the operator is increased, making it easier for the operator to rotate the operating block.

[0009] Preferably, one side of the fixing plate is fixedly connected to a limiting plate, and the limiting plate is slidably connected to the placement plate.

[0010] The effect achieved by the above components is: by using the limit plate, the moving trajectory of the fixed plate is restricted, so that the fixed plate can move more stably.

[0011] Preferably, a bearing is fixedly connected to one side of the threaded rod, and an outer ring of the bearing is fixedly connected to a fixing plate.

[0012] The effect achieved by the above components is: by using the bearing, the friction between the threaded rod and the fixed plate is reduced, so that the threaded rod can rotate better on the fixed plate.

[0013] Preferably, a conical block is fixedly connected to one side of the take-up rod, and the size of the conical block on the side away from the take-up rod is smaller than the size on the other side.

[0014] The effect achieved by the above components is: by using the tapered block, the size of one side of the take-up rod is reduced, and then the take-up rod can pass through the through hole on the fixing plate more easily.

[0015] Preferably, the mounting assembly includes a square tube, which is fixedly connected to the outer shell, a bolt is inserted into the internal thread of the square tube, one side of the bolt is threadedly connected to a connecting plate, and one side of the connecting plate is fixedly connected to the placement plate.

[0016] The effect achieved by the above components is: when using the wire-taking device, the placement plate can be moved so that the connecting plate on one side of the placement plate is inserted into the square tube, and then the bolt is turned so that the bolt passes through the square tube and is fixed to the connecting plate, and then the position of the placement plate is fixed. By using the installation assembly, the wire-taking device can be quickly installed and fixed, and then the operator can use the wire-taking device conveniently.

[0017] Preferably, one side of the bolt abuts against a gasket, and one side of the gasket abuts against the square tube.

[0018] The effect achieved by the above components is: by using gaskets, the friction between the bolts and the operator is increased, so that the bolts can fix the connecting plate more firmly.

[0019] Preferably, one side of the connecting plate is fixedly connected to a reinforcing plate, and one side of the reinforcing plate is fixedly connected to the placement plate.

[0020] The effect achieved by the above components is: by using the reinforcing plate, the connection strength between the connecting plate and the placement plate is improved, thereby avoiding the separation of the placement plate and the connecting plate.

[0021] In summary, the beneficial effects of the present invention are as follows:

[0022] By using a wire take-up device, the cables can be stored and fixed to avoid the situation where the cables are easily entangled when the wind pressure sensor is stored after the wind pressure measurement is completed, thereby improving the use effect of the wind pressure measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the wire take-up device of the present invention;

[0025] Figure 3 For this utility model Figure 2 A magnified image of the source A;

[0026] Figure 4 It is a three-dimensional structural diagram of the installation component of the utility model.

[0027] Legend: 1. Housing; 2. Wire-taking device; 21. Placement plate; 22. Threaded rod; 23. Fixing plate; 24. Wire-taking rod; 25. Operating block; 26. Anti-sliding block; 27. Limiting plate; 28. Bearing; 29. ​​Conical block; 3. Mounting assembly; 31. Square tube; 32. Bolt; 33. Connecting plate; 34. Gasket; 35. Reinforcement plate; 4. Cable; 5. Display screen; 6. Measuring rod. DETAILED DESCRIPTION

[0028] Reference Figure 1-4 As shown, this embodiment discloses a ventilation duct wind pressure measuring device, including a shell 1 and an installation component 3, a cable 4 is provided on one side of the shell 1, a display screen 5 is provided on one side of the shell 1, a measuring rod 6 is provided on one side of the shell 1, and a wire taking-up device 2 is provided on one side of the shell 1 with the aid of the installation component 3.

[0029] Reference Figure 1-4 As shown, this embodiment discloses a wire-reeling device 2 including a placing plate 21, a threaded rod 22 being threadedly connected to one side of the placing plate 21, a fixed plate 23 being rotatably connected to one side of the threaded rod 22, a wire-reeling rod 24 being fixedly connected to one side of the placing plate 21, and an operating block 25 being fixedly connected to one side of the threaded rod 22.

[0030] Reference Figure 1-4 As shown, this embodiment discloses that when measuring the partial pressure of the ventilation duct, the measuring rod 6 of the wind pressure sensor is connected to the ventilation duct, and then the cable 4 inside the housing 1 is connected to other devices, and the result is output through the display screen 5. The wind pressure sensor usually includes a piezoresistive element, which is covered by a layer of elastic film and is divided into two isolated chambers. When the airflow passes through the sensor, the pressure generated by the airflow on the diaphragm causes the film to bend slightly. This bending causes the pressure in the chambers on both sides of the film to change. The pressure change on both sides of the diaphragm will be detected by the electronic components inside the sensor, and then the electronic components will convert the detected resistance change into an electrical signal output. This electrical signal corresponds to the input wind pressure. After measuring the wind pressure, the cable 4 is wound around the take-up rod 24, and then the operating block 25 is rotated to make the threaded rod 22 rotate on the placement plate 21, and then the threaded rod 22 drives the fixing plate 23 close to the take-up rod 24, and then the through hole on the fixing plate 23 is penetrated by the take-up rod 24, and then the fixing plate 23 squeezes and fixes the cable 4 wound on the take-up rod 24. By using the take-up device 2, the cable 4 can be stored and fixed, avoiding the situation where the cable 4 is easily entangled when the wind pressure measurement is completed and the wind pressure sensor is stored, thereby improving the use effect of the wind pressure measuring device.

[0031] Reference Figure 1-4As shown, this embodiment discloses that one side of the operating block 25 is fixedly connected to a plurality of anti-slide blocks 26, and the plurality of anti-slide blocks 26 are equidistantly arranged on one side of the operating block 25. By using the anti-slide blocks 26, the friction between the operating block 25 and the operator is increased, making it easier for the operator to rotate the operating block 25. One side of the fixed plate 23 is fixedly connected to a limit plate 27, and the limit plate 27 is slidably connected to the placement plate 21. By using the limit plate 27, the movement trajectory of the fixed plate 23 is restricted, so that the fixed plate 23 can move more stably. One side of the threaded rod 22 is fixedly connected to a bearing 28, and the outer ring of the bearing 28 is fixedly connected to the fixed plate 23. By using the bearing 28, the friction between the threaded rod 22 and the fixed plate 23 is reduced, so that the threaded rod 22 can rotate better on the fixed plate 23. One side of the take-up rod 24 is fixedly connected to a conical block 29, and the size of the conical block 29 on the side away from the take-up rod 24 is smaller than that on the other side. By using the tapered block 29 , the size of one side of the take-up rod 24 is reduced, and the take-up rod 24 can be more easily passed through the through hole in the fixing plate 23 .

[0032] Reference Figure 1-4 As shown, this embodiment discloses that the mounting assembly 3 includes a square tube 31, which is fixedly connected to the housing 1. A bolt 32 is inserted into the internal thread of the square tube 31, and a connecting plate 33 is threadedly connected to one side of the bolt 32. One side of the connecting plate 33 is fixedly connected to the placement plate 21. When using the take-up device 2, the placement plate 21 can be moved so that the connecting plate 33 on one side of the placement plate 21 is inserted into the square tube 31, and then the bolt 32 is rotated so that the bolt 32 passes through the square tube 31 and is fixed to the connecting plate 33, thereby completing the fixation of the placement plate 21. By using the mounting assembly 3, the take-up device 2 can be quickly installed and fixed, and then the operator can use the take-up device 2 conveniently.

[0033] Reference Figure 1-4 As shown, this embodiment discloses a washer 34 abutting one side of the bolt 32, which in turn abuts the square tube 31. The use of the washer 34 increases the friction between the bolt 32 and the operator, allowing the bolt 32 to more securely secure the connecting plate 33. A reinforcing plate 35 is fixedly connected to one side of the connecting plate 33, and one side of the reinforcing plate 35 is fixedly connected to the placement plate 21. The reinforcing plate 35 increases the connection strength between the connecting plate 33 and the placement plate 21, preventing the placement plate 21 and the connecting plate 33 from separating.

[0034] Working principle: When measuring the partial pressure of the ventilation duct, the measuring rod 6 of the wind pressure sensor will be connected to the ventilation duct, and then the cable 4 inside the shell 1 will be connected to other devices, and the result will be output through the display screen 5. The wind pressure sensor usually includes a piezoresistive element, which is covered by a layer of elastic film and is divided into two isolated chambers. When the airflow passes through the sensor, the pressure of the airflow on the diaphragm will cause the film to bend slightly. This bending will cause the pressure in the chambers on both sides of the film to change. The pressure change on both sides of the diaphragm will be detected by the electronic components inside the sensor, and then the electronic components will convert the detected resistance change into an electrical signal output. This electrical signal corresponds to the input wind pressure. After measuring the wind pressure, the cable 4 is wound around the take-up rod 24 with the tapered block 29, and then the operating block 25 with the anti-sliding block 26 is rotated to make the threaded rod 22 with the bearing 28 rotate on the placement plate 21, and then the threaded rod 22 drives the fixing plate 23 to approach the take-up rod 24. At this time, the limit plate 27 is used to limit the movement trajectory of the fixing plate 23, so that the fixing plate 23 can move more stably, and then the through hole on the fixing plate 23 is penetrated by the take-up rod 24, and then the fixing plate 23 squeezes and fixes the cable 4 wound on the take-up rod 24. By using the take-up device 2, the cable 4 can be stored and fixed, avoiding the situation where the cable 4 is easily entangled when the wind pressure measurement is completed and the wind pressure sensor is stored, thereby improving the use effect of the wind pressure measuring device.

[0035] When using the take-up device 2, the placement plate 21 can be moved so that the connecting plate 33 on one side of the placement plate 21 is inserted into the square tube 31, and then the bolt 32 is rotated so that the bolt 32 passes through the gasket 34 and the square tube 31 and is fixed to the connecting plate 33, and then the position of the placement plate 21 is fixed. By using the installation component 3, the take-up device 2 can be quickly installed and fixed, and then the operator can use the take-up device 2 conveniently.

Claims

1. A ventilation duct wind pressure measuring device, comprising a housing (1) and a mounting assembly (3), characterized in that: A cable (4) is provided on one side of the housing (1), a display screen (5) is provided on one side of the housing (1), a measuring rod (6) is provided on one side of the housing (1), a wire take-up device (2) is provided on one side of the housing (1) with the aid of a mounting assembly (3), the wire take-up device (2) comprises a placement plate (21), a threaded rod (22) is threadedly connected to one side of the placement plate (21), a fixing plate (23) is rotatably connected to one side of the threaded rod (22), a wire take-up rod (24) is fixedly connected to one side of the placement plate (21), and an operating block (25) is fixedly connected to one side of the threaded rod (22).

2. A ventilation duct wind pressure measuring device according to claim 1, characterized in that: One side of the operating block (25) is fixedly connected to a plurality of anti-sliding blocks (26), and the plurality of anti-sliding blocks (26) are arranged at equal distances on one side of the operating block (25).

3. The ventilation duct wind pressure measuring device according to claim 2, characterized in that: One side of the fixed plate (23) is fixedly connected to a limiting plate (27), and the limiting plate (27) is slidably connected to the placement plate (21).

4. The ventilation duct wind pressure measuring device according to claim 3, characterized in that: A bearing (28) is fixedly connected to one side of the threaded rod (22), and an outer ring of the bearing (28) is fixedly connected to the fixing plate (23).

5. The ventilation duct wind pressure measuring device according to claim 4, characterized in that: A conical block (29) is fixedly connected to one side of the wire take-up rod (24), and the size of the conical block (29) on the side away from the wire take-up rod (24) is smaller than the size of the other side.

6. The ventilation duct wind pressure measuring device according to claim 5, characterized in that: The mounting assembly (3) includes a square tube (31), the square tube (31) is fixedly connected to the housing (1), a bolt (32) is inserted into the internal thread of the square tube (31), one side of the bolt (32) is threadedly connected to a connecting plate (33), and one side of the connecting plate (33) is fixedly connected to the placement plate (21).

7. The ventilation duct wind pressure measuring device according to claim 6, characterized in that: One side of the bolt (32) abuts against a gasket (34), and one side of the gasket (34) abuts against the square tube (31).

8. The ventilation duct wind pressure measuring device according to claim 7, characterized in that: One side of the connecting plate (33) is fixedly connected to a reinforcing plate (35), and one side of the reinforcing plate (35) is fixedly connected to the placement plate (21).

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