Liquid level sensor for medical instrument

Abstract

The utility model relates to the technical field of sensors, in particular to a liquid level sensor for medical equipment, which comprises a connecting rod and a connector arranged at the top of the connecting rod, an air pipe is connected onto the connector and communicated with external pressure detection equipment, a detection base is connected to the bottom of the connecting rod and communicated with the air pipe, and the air pipe is communicated with the detection base. The outer wall of the detection base is provided with a plurality of pressure sensors, the bottom of the detection base is provided with a counterweight base, the bottom of the connecting rod is connected with a fixed ring, the outer wall of the connecting rod is sleeved with a movable ring, a connecting rod is hinged between the movable ring and the fixed ring, and the outer wall of the movable ring is connected with a supporting rod. According to the liquid level sensor for the medical instrument, the influence of flowing liquid on the sensor can be reduced, and the working stability and accuracy of the sensor are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a liquid level sensor for medical equipment. Background Art

[0002] The static pressure input level transmitter (liquid level gauge) is suitable for the liquid level measurement of various media in systems and industries such as petrochemical, metallurgy, electricity, pharmaceutical, water supply and drainage, and environmental protection. The exquisite structure, simple adjustment and flexible installation method provide convenience for users to use easily. Standard signal output modes such as 4-20mA, 0-5v, 0-10mA are optional by users according to their needs. Measuring liquid level using the principle of fluid statics is an important application of pressure sensors. The use of special cables with ventilation ducts in the middle and special sealing technology not only ensures the water tightness of the sensor, but also makes the reference pressure chamber communicate with the ambient pressure, thereby ensuring high precision and high stability of the measurement. Existing liquid level sensors for medical devices, such as a liquid level sensor for medical devices, patent number (CN218724498U), are equipped with a counterweight to keep the liquid level sensor in a vertical state, but in some flowing liquids, the liquid level sensor cannot be kept in a vertical state by relying solely on the counterweight, which affects the accuracy of liquid level monitoring. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and provides a liquid level sensor for medical equipment.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A liquid level sensor for medical equipment is designed, comprising a connecting rod, a joint arranged at the top of the connecting rod, an air pipe connected to the joint, the air pipe is connected to an external pressure detection device, a detection base is connected to the bottom of the connecting rod, the detection base is connected to the air pipe, a plurality of pressure sensors are arranged on the outer wall of the detection base, and a counterweight base is arranged at the bottom of the detection base.

[0006] Preferably, a fixed ring is connected to the bottom of the connecting rod, a movable ring is sleeved on the outer wall of the connecting rod, a connecting rod is hinged between the movable ring and the fixed ring, and a supporting rod is connected to the outer wall of the movable ring.

[0007] Preferably, there are multiple support rods, and the multiple support rods are circumferentially distributed on the movable ring. The support rods are rotatably connected to the movable ring via hinges.

[0008] Preferably, an auxiliary plate is radially arranged on the outer wall of the support rod, and a plurality of through holes are evenly opened on the outer wall of the auxiliary plate.

[0009] Preferably, a spring is sleeved on the outer wall of the connecting rod, and the spring abuts between the joint and the movable ring.

[0010] Preferably, the pressure sensor is a thin film pressure sensor.

[0011] The utility model provides a liquid level sensor for medical equipment, which has the beneficial effect that: by setting a retractable support rod structure, when the liquid level sensor needs to be placed in a medical vessel, a push joint is used to push the entire liquid level sensor into the medical vessel from the opening of the medical vessel. After entering the medical vessel, a counterweight base is set to improve the stability of the sensor, prevent it from tipping over, and improve the stability of the equipment. At the same time, the support rods are stretched open by the action of springs, and the stretched multiple support rods cooperate with the auxiliary plate to further support the sensor, so as to reduce the influence of the flowing liquid on the sensor, and further improve the working stability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a liquid level sensor for medical equipment proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of a liquid level sensor for medical equipment proposed by the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of a liquid level sensor for medical equipment proposed by the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of a liquid level sensor for medical equipment proposed by the utility model;

[0016] Figure 5 The utility model is a schematic diagram of the structure of a liquid level sensor for medical equipment.

[0017] In the figure: 1 counterweight base, 2 pressure sensor, 3 detection base, 4 connecting rod, 5 auxiliary plate, 6 support rod, 7 connecting rod, 8 spring, 9 joint, 10 air pipe, 11 fixed ring, 12 movable ring, 13 hinge. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-5A liquid level sensor for medical equipment includes a connecting rod 7, a joint 9 arranged on the top of the connecting rod 7, an air pipe 10 connected to the joint 9, the air pipe 10 is connected to an external pressure detection device, a detection base 3 is connected to the bottom of the connecting rod 7, the detection base 3 is connected to the air pipe 10, a plurality of pressure sensors 2 are arranged on the outer wall of the detection base 3, and a counterweight base 1 is arranged at the bottom of the detection base 3.

[0020] The bottom of the connecting rod 7 is connected with a fixed ring 11 , the outer wall of the connecting rod 7 is sleeved with a movable ring 12 , a connecting rod 4 is hinged between the movable ring 12 and the fixed ring 11 , and the outer wall of the movable ring 12 is connected with a supporting rod 6 .

[0021] There are multiple support rods 6, which are circumferentially distributed on the movable ring 12. The support rods 6 are rotatably connected to the movable ring 12 via hinges 13. Auxiliary plates 5 are radially arranged on the outer wall of the support rods 6, and multiple through holes are evenly opened on the outer wall of the auxiliary plates 5.

[0022] The outer wall of the connecting rod 7 is sleeved with a spring 8, and the spring 8 abuts between the joint 9 and the movable ring 12. The pressure sensor 2 is a thin film pressure sensor.

[0023] Working method: When monitoring, the liquid level sensor is placed in the medical vessel, and the push connector 9 pushes the entire liquid level sensor from the opening of the medical vessel. After entering the medical vessel, the counterweight base 1 is set to improve the stability of the sensor to prevent it from tipping over, thereby improving the stability of the equipment. The set support rods 6 are stretched open by the action of the springs 8, and the stretched multiple support rods 6 cooperate with the auxiliary plate 5 to further support the sensor to reduce the impact of the flowing liquid on the sensor.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid level sensor for medical equipment, comprising a connecting rod (7), characterized in that: A joint (9) is arranged at the top of the connecting rod (7), and an air pipe (10) is connected to the joint (9), and the air pipe (10) is connected to an external pressure detection device. The bottom of the connecting rod (7) is connected to a detection base (3), and the detection base (3) is connected to the air pipe (10). A plurality of pressure sensors (2) are arranged on the outer wall of the detection base (3), and a counterweight base (1) is arranged at the bottom of the detection base (3).

2. A liquid level sensor for medical equipment according to claim 1, characterized in that: The bottom of the connecting rod (7) is connected to a fixed ring (11), the outer wall of the connecting rod (7) is sleeved with a movable ring (12), a connecting rod (4) is hinged between the movable ring (12) and the fixed ring (11), and the outer wall of the movable ring (12) is connected to a support rod (6).

3. A liquid level sensor for medical equipment according to claim 2, characterized in that: There are a plurality of support rods (6), which are circumferentially distributed on the movable ring (12), and the support rods (6) are rotatably connected to the movable ring (12) via hinges (13).

4. A liquid level sensor for medical equipment according to claim 3, characterized in that: An auxiliary plate (5) is radially arranged on the outer wall of the support rod (6), and a plurality of through holes are evenly opened on the outer wall of the auxiliary plate (5).

5. The liquid level sensor for medical equipment according to claim 1, characterized in that: The outer wall of the connecting rod (7) is sleeved with a spring (8), and the spring (8) abuts between the joint (9) and the movable ring (12).

6. A liquid level sensor for medical equipment according to claim 1, characterized in that: The pressure sensor (2) is a thin film pressure sensor.

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