An adjustable micro differential pressure sensor

Abstract

The utility model discloses an adjustable micro pressure difference sensor, including sensor casing, the sensor casing outside is equipped with the connecting component, the connecting component is including the connecting frame, the connecting frame fixedly connected in sensor casing one side outer wall, the connecting frame outside rotatory sleeve is equipped with the mounting seat, the connecting frame rotating shaft one end coaxially fixedly has the mounting panel, the inside sliding of mounting panel is inserted with two symmetrical setting's locating rod, two locating rod outside all are equipped with a spring, two spring one end respectively with two locating rod fixedly connected, and two spring other end all are fixedly connected with mounting panel, mounting seat one end outer wall fixedly connected with the limit ring, the utility model discloses a connecting component can be realized without changing the sensor installation position, can easily change the orientation of sensor, makes the observation of different height staff all enough convenient, is favorable for the adaptability of improving device.

Description

Technical Field

[0001] This utility model relates to the field of micro differential pressure sensor technology, specifically an adjustable micro differential pressure sensor. Background Technology

[0002] A micro differential pressure sensor is a device used to measure minute pressure differences between two different points. It is widely used in cleanrooms, ventilation systems, medical equipment, and industrial automation control. These applications typically require high-precision pressure difference measurement to ensure proper system operation or that environmental parameters meet specific standards.

[0003] A search revealed a utility model patent with Chinese patent publication number CN217155682U, which discloses a high-stability indoor micro-differential pressure sensor, including a sensor body and a protective base. The protective base has an internal fitting groove that is movably connected to the sensor body. The front of the sensor body has a groove with cable interfaces fixed on both sides inside the groove. A first support plate and a second support plate are fixedly distributed on the front and rear sides of the top of the protective base, and a mounting plate is hinged to the top of the first support plate.

[0004] The aforementioned device uses a fixed structure to fix the sensor. Therefore, when the sensor is fixed, its position and angle are also fixed. If the installation position is high and the staff is not tall enough, it will be difficult to view the sensor panel, which leaves room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable micro differential pressure sensor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable micro differential pressure sensor, comprising a sensor housing, a connecting assembly mounted on the outside of the sensor housing, the connecting assembly comprising a connecting frame, the connecting frame being fixedly connected to one side of the outer wall of the sensor housing, a mounting seat being rotatably sleeved on the outside of the connecting frame, a mounting plate being coaxially fixed at one end of the rotating shaft of the connecting frame, two symmetrically arranged positioning rods being slidably inserted inside the mounting plate, a spring being sleeved on the outside of each of the two positioning rods, one end of each of the two springs being fixedly connected to the two positioning rods respectively, and the other end of each of the two springs being fixedly connected to the mounting plate, a limit ring being fixedly connected to one end of the outer wall of the mounting seat, and a plurality of limit holes adapted to the positioning rods being opened on one end of the outer wall of the limit ring.

[0007] The sensor's orientation can be easily changed without altering its installation position, making it convenient for workers of different heights to observe. This improves the device's adaptability. For example, if a worker is too tall, the connecting bracket can be rotated counterclockwise inside the mounting base via the cover plate. The rotating shaft of the connecting bracket drives the mounting plate to rotate synchronously. The mounting plate then moves the positioning rod out of the inserted limiting hole, stretching the spring. When the positioning rod moves to the outside of the new limiting hole, the stretched spring drives the positioning rod into it, ensuring that the cover plate will not flip due to loss of support.

[0008] As a further preferred embodiment of this technical solution, each of the two positioning rods is internally threaded with a reinforcing rod, the end of the reinforcing rod having the same curvature as the end of the positioning rod, and the inner wall of one end of each of the several limiting holes is provided with a positioning hole that matches the reinforcing rod.

[0009] As a further preferred embodiment of this technical solution, a limiting frame is fixedly connected to the outer wall of one end of the positioning rod, and the end of the reinforcing rod fits into the inner wall of the limiting frame to fill the groove of the positioning rod.

[0010] As a further preferred embodiment of this technical solution, a cover plate is rotatably connected to one side of the outer wall of the sensor housing via a hinge. The cover plate completely closes the opening of the sensor housing, and the sensor housing and the cover plate are equipped with the same opening and closing assembly.

[0011] As a further preferred embodiment of this technical solution, the opening and closing assembly includes a vertically arranged guide frame, which is fixedly connected to the outer wall of one end of the sensor housing. A drive seat is slidably sleeved on the outside of the guide frame, and a support column is fixedly connected to one end of the drive seat. An inclined extension frame is fixedly connected to the outer wall of one end of the cover plate, and the support column is in contact with one side of the extension frame.

[0012] To inspect the internal components of the sensor housing, apply an upward thrust to the drive seat. The drive seat and support column slide upward along the guide frame. Since the extension frame is tilted and the top end of the cover plate with the extension frame is hinged to the outside of the sensor housing, the extension frame and cover plate will be pushed upward and flipped as the position-fixed support column moves, exposing the internal components of the sensor housing to the outside.

[0013] As a further preferred embodiment of this technical solution, the drive seat is internally threaded with a horizontally arranged limiting bolt, the end of which is in contact with the outer wall of the guide frame.

[0014] As a further preferred embodiment of this technical solution, a connection hole is provided at each of the four corners of the mounting base.

[0015] This invention provides an adjustable micro differential pressure sensor, which has the following advantages:

[0016] (1) By setting up a connecting component, this utility model can easily change the orientation of the sensor without changing the sensor installation position, making it convenient for workers of different heights to observe. This is beneficial to improving the adaptability of the device. If the worker is too tall, the connecting frame can be pushed to rotate counterclockwise inside the mounting base through the cover plate. The rotating shaft of the connecting frame drives the mounting plate to rotate synchronously. The mounting plate drives the positioning rod to move out of the inserted limiting hole. The spring is stretched by force. When the positioning rod moves to the outside of the new limiting hole, the stretched spring drives the positioning rod to enter it, ensuring that the cover plate will not flip over due to loss of support.

[0017] (2) By setting up an opening and closing component, if it is necessary to repair the internal components of the sensor housing, the drive seat is pushed upward, and the drive seat and support column slide upward along the guide frame. Since the extension frame is in an inclined state and the top end of the cover plate with the extension frame is hinged to the outside of the sensor housing, as the position fixed support column moves, the extension frame and cover plate will be pushed upward and flipped, and the internal components of the sensor housing will be exposed to the outside. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partially enlarged structural diagram of the connecting component of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point B;

[0022] In the diagram: 1. Sensor housing; 2. Cover plate; 3. Connecting hole; 4. Connecting assembly; 5. Opening and closing assembly; 401. Mounting base; 402. Connecting frame; 403. Mounting plate; 404. Limiting ring; 405. Limiting hole; 406. Positioning rod; 407. Spring; 408. Reinforcing rod; 409. Limiting frame; 501. Extension frame; 502. Guide frame; 503. Drive base; 504. Support column; 505. Limiting bolt. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, an adjustable differential pressure sensor includes a sensor housing 1 (the sensor model is Setra Model 264, employing microelectromechanical systems (MEMS) technology, with an accuracy of ±0.5%FS. It features a built-in algorithm to automatically compensate for environmental interference such as temperature and humidity, avoiding the tediousness of manual calibration and enabling automatic range adjustment. For example, in an air conditioning system, the sensor can automatically adapt to pressure changes under different wind speeds, maintaining measurement stability). A connecting component 4 is mounted externally on the sensor housing 1. The connecting component 4 includes a connecting bracket 402, which is fixedly connected to the outer wall of one side of the sensor housing 1. A mounting base 401 is rotatably sleeved on the outside of the connecting bracket 402. One end of the rotating shaft of the connecting frame 402 is coaxially fixed with a mounting plate 403. Two symmetrically arranged positioning rods 406 are slidably inserted inside the mounting plate 403. A spring 407 is sleeved on the outside of each positioning rod 406. One end of each spring 407 is fixedly connected to the two positioning rods 406, and the other end of each spring 407 is fixedly connected to the mounting plate 403. A limit ring 404 is fixedly connected to the outer wall of one end of the mounting base 401. A number of limit holes 405 adapted to the positioning rods 406 are opened on the outer wall of one end of the limit ring 404.

[0025] Both positioning rods 406 are internally threaded with a reinforcing rod 408. The end of the reinforcing rod 408 has the same curvature as the end of the positioning rod 406. The inner wall of one end of several limiting holes 405 is provided with positioning holes that are adapted to the reinforcing rod 408.

[0026] One end of the positioning rod 406 is fixedly connected to the outer wall of the limiting frame 409. When the end of the reinforcing rod 408 is in contact with the inner wall of the limiting frame 409, it fills the groove of the positioning rod 406.

[0027] If the staff member is too tall, the connecting bracket 402 can be pushed to rotate counterclockwise inside the mounting base 401 through the cover plate 2. The rotating shaft of the connecting bracket 402 drives the mounting plate 403 to rotate synchronously. The mounting plate 403 drives the positioning rod 406 to move out of the inserted limiting hole 405. The spring 407 is stretched by force. When the positioning rod 406 moves to the outside of the new limiting hole 405, the stretched spring 407 drives the positioning rod 406 into it, ensuring that the cover plate 2 will not flip due to loss of support. The reinforcing rod 408 is driven to rotate by the knob. The reinforcing rod 408 moves towards the limiting ring 404 and closes to the positioning rod 406 until the reinforcing rod 408 is inserted into a deeper hole, ensuring that the positioning rod 406 cannot move out of the limiting hole 405 again.

[0028] like Figure 1 and Figure 3 As shown, a cover plate 2 is rotatably connected to one side of the outer wall of the sensor housing 1 via a hinge. The cover plate 2 completely seals the opening of the sensor housing 1. The sensor housing 1 and the cover plate 2 are equipped with the same opening and closing assembly 5.

[0029] The opening and closing assembly 5 includes a vertically arranged guide frame 502, which is fixedly connected to the outer wall of one end of the sensor housing 1. A drive seat 503 is slidably sleeved on the outside of the guide frame 502. A support column 504 is fixedly connected to one end of the drive seat 503. An inclined extension frame 501 is fixedly connected to the outer wall of one end of the cover plate 2. The support column 504 is attached to one side of the extension frame 501.

[0030] The drive seat 503 has a horizontally set limit bolt 505 internally threaded connection, and the end of the limit bolt 505 is in contact with the outer wall of the guide frame 502.

[0031] To inspect the internal components of the sensor housing 1, apply an upward thrust to the drive seat 503. The drive seat 503 and the support column 504 slide upward along the guide frame 502. Since the extension frame 501 is in an inclined state, and the top end of the cover plate 2, which is fixed to the extension frame 501, is hinged to the outside of the sensor housing 1, the extension frame 501 and the cover plate 2 will be pushed upward and flipped as the position-fixed support column 504 moves. The internal components of the sensor housing 1 will then be exposed to the outside. Finally, twist the limiting bolt 505. The limiting bolt 505 will press against the outer wall of the guide frame 502 along the drive seat 503. Under the action of the friction between the two, the position of the drive seat 503 will be fixed.

[0032] like Figure 1 As shown, each of the four corners of the mounting base 401 has a connecting hole 3.

[0033] This invention provides an adjustable micro differential pressure sensor, the specific working principle of which is as follows:

[0034] When the device is working, if the operator is too tall, the connecting frame 402 can be pushed to rotate counterclockwise inside the mounting base 401 through the cover plate 2. The rotating shaft of the connecting frame 402 drives the mounting plate 403 to rotate synchronously. The mounting plate 403 drives the positioning rod 406 to move out of the inserted limiting hole 405. The spring 407 is stretched by force. When the positioning rod 406 moves to the outside of the new limiting hole 405, the stretched spring 407 drives the positioning rod 406 into it, ensuring that the cover plate 2 will not flip due to loss of support. The reinforcing rod 408 is driven to rotate by the knob. The reinforcing rod 408 moves towards the limiting ring 404 and closes to the positioning rod 406 until the reinforcing rod 408 is inserted into a deeper hole, ensuring that the positioning rod 406 cannot move out of the limiting hole 405 again. To inspect the internal components of the sensor housing 1, apply an upward thrust to the drive seat 503. The drive seat 503 and the support column 504 slide upward along the guide frame 502. Since the extension frame 501 is tilted and one end of the cover plate 2, which is fixed to the extension frame 501, is hinged to the outside of the sensor housing 1, the extension frame 501 and the cover plate 2 will be pushed upward and flipped as the position-fixed support column 504 moves. The internal components of the sensor housing 1 will then be exposed. Finally, twist the limiting bolt 505. The limiting bolt 505 will press against the outer wall of the guide frame 502 along the drive seat 503. Under the action of friction, the position of the drive seat 503 will be fixed. Note that the wires connecting to the display screen need to be left with sufficient length for the cover plate 2 to flip.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable micro differential pressure sensor, comprising a sensor housing (1), characterized in that: A connecting assembly (4) is installed on the outside of the sensor housing (1). The connecting assembly (4) includes a connecting frame (402). The connecting frame (402) is fixedly connected to the outer wall of one side of the sensor housing (1). A mounting base (401) is rotatably sleeved on the outside of the connecting frame (402). A mounting plate (403) is coaxially fixed at one end of the rotating shaft of the connecting frame (402). Two symmetrically arranged positioning rods (406) are slidably inserted inside the mounting plate (403). A spring (407) is sleeved on the outside of each of the two positioning rods (406). One end of each spring (407) is fixedly connected to the two positioning rods (406), and the other end of each spring (407) is fixedly connected to the mounting plate (403). A limiting ring (404) is fixedly connected to the outer wall of one end of the mounting base (401). A plurality of limiting holes (405) adapted to the positioning rods (406) are opened on the outer wall of one end of the limiting ring (404).

2. The adjustable micro differential pressure sensor according to claim 1, characterized in that: Both positioning rods (406) are internally threaded with a reinforcing rod (408). The curvature of the end of the reinforcing rod (408) is consistent with that of the end of the positioning rod (406). The inner wall of one end of each of the limiting holes (405) is provided with a positioning hole that matches the reinforcing rod (408).

3. The adjustable micro differential pressure sensor according to claim 2, characterized in that: One end of the positioning rod (406) is fixedly connected to the outer wall of the limiting frame (409), and when the end of the reinforcing rod (408) is in contact with the inner wall of the limiting frame (409), it fills the groove of the positioning rod (406).

4. The adjustable micro differential pressure sensor according to claim 1, characterized in that: The sensor housing (1) has a cover plate (2) connected to one side of its outer wall via a hinge. The cover plate (2) completely seals the opening of the sensor housing (1). The sensor housing (1) and the cover plate (2) are equipped with the same opening and closing assembly (5).

5. An adjustable micro differential pressure sensor according to claim 4, characterized in that: The opening and closing assembly (5) includes a vertically arranged guide frame (502), which is fixedly connected to the outer wall of one end of the sensor housing (1). A drive seat (503) is slidably sleeved on the outside of the guide frame (502). A support column (504) is fixedly connected to one end of the drive seat (503). An inclined extension frame (501) is fixedly connected to the outer wall of one end of the cover plate (2). The support column (504) is attached to one side of the extension frame (501).

6. An adjustable micro differential pressure sensor according to claim 5, characterized in that: The drive seat (503) is internally threaded with a horizontally arranged limiting bolt (505), the end of which is in contact with the outer wall of the guide frame (502).

7. An adjustable micro differential pressure sensor according to claim 1, characterized in that: The mounting base (401) has a connection hole (3) at each of its four corners.

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