阅读说明：本技术 一种多功能液位检测器 (Multifunctional liquid level detector ) 是由 施远强 于 2021-06-28 设计创作，主要内容包括：本发明公开了一种多功能液位检测器,包括一外壳,所述外壳内安装有浮球,所述浮球与摆臂连接,所述摆动轴安装在摆臂上,所述浮球和摆臂可带动摆动轴一起摆动,所述摆动轴穿过外壳延伸到背面,沿着轴的方向,设置有固定单元和与之相配合的液位检测单元。本发明提供的多功能液位检测器,通过在结构相同的壳体内部设置三种结构不同的附件用以实现液位检测和比重检测,同时可将检测信息反馈给控制系统,再配合其他部件如泵、阀的情况下,可实现对液位的维持功能。(The invention discloses a multifunctional liquid level detector, which comprises a shell, wherein a floating ball is arranged in the shell, the floating ball is connected with a swing arm, a swing shaft is arranged on the swing arm, the floating ball and the swing arm can drive the swing shaft to swing together, the swing shaft penetrates through the shell to extend to the back, and a fixing unit and a liquid level detection unit matched with the fixing unit are arranged along the shaft direction. The multifunctional liquid level detector provided by the invention is characterized in that three accessories with different structures are arranged in a shell with the same structure to realize liquid level detection and specific gravity detection, detection information can be fed back to a control system, and the liquid level can be maintained under the condition of matching with other components such as a pump and a valve.)

1. A multi-functional liquid level detector, comprising: the floating ball is installed in the shell and connected with the swing arm, the swing shaft is installed on the swing arm, the floating ball and the swing arm can drive the swing shaft to swing together, the swing shaft penetrates through the shell to extend to the back, and the fixing unit and the liquid level detection unit matched with the fixing unit are arranged along the direction of the shaft.

2. The multi-functional liquid level detector of claim 1, wherein the fixing unit comprises a rotating shaft fixing seat, a shaft sleeve, a first sealing ring, a third sealing ring, a positioning ring, a lock nut, a sealing nut and a second sealing ring which are sequentially arranged along the oscillating shaft.

3. The multifunctional liquid level detector according to claim 1, wherein the liquid level detection unit comprises a liquid level detection assembly, the liquid level detection assembly comprises a magnetic steel and a position sensor PCB, the magnetic steel is mounted on a magnetic steel fixing seat, and the magnetic steel fixing seat is mounted at the other end of the swing shaft; the position sensor PCB is arranged on the position sensor support, and the position sensor PCB and the position sensor support are in coaxial relation with the magnetic steel through the positioning ring.

4. The multi-functional liquid level detector of claim 1, wherein the liquid level detection unit comprises a liquid level detection assembly, the liquid level detection assembly comprises a pendulum pin and a position switch, the pendulum pin is connected with the pendulum shaft at one end and is drivingly connected with the position switch at the other end.

5. The multifunctional liquid level detector according to claim 1, wherein the liquid level detection unit comprises a specific gravity detection assembly, the specific gravity detection assembly comprises a magnetic steel and a position sensor PCB, the magnetic steel is mounted on a magnetic steel fixing seat, and the magnetic steel fixing seat is mounted at the other end of the swing shaft; the position sensor PCB is arranged on the position sensor support, and the position sensor PCB and the position sensor support are in a coaxial relation with the magnetic steel through the positioning ring; the specific gravity detection assembly further comprises a spring traction mechanism, the spring traction mechanism comprises a spring and a spring fixing seat, one end of the spring is connected with the oscillating shaft through a pendulum needle, and the other end of the spring is installed on the spring fixing seat.

6. The multi-purpose liquid level detector of claim 1, wherein a transparent cover plate is mounted to a front face of said housing.

Technical Field

The invention belongs to the technical field of liquid level monitoring, and particularly relates to a multifunctional liquid level detector.

Background

The existing liquid level maintainer can only realize the on-off function of liquid through a switch, cannot monitor the liquid level of the liquid, cannot monitor the specific gravity of other liquids, and cannot realize the purpose of multifunctional detection.

Therefore, it is a problem to be solved by those skilled in the art to provide a multifunctional liquid level detection device.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a multifunctional liquid level detector which can achieve the functions of monitoring the liquid level and the specific gravity of liquid.

In order to achieve the above object, the present invention provides a multifunctional liquid level detector, comprising: the floating ball is installed in the shell and connected with the swing arm, the swing shaft is installed on the swing arm, the floating ball and the swing arm can drive the swing shaft to swing together, the swing shaft penetrates through the shell to extend to the back, and the fixing unit and the liquid level detection unit matched with the fixing unit are arranged along the direction of the shaft.

Furthermore, the fixed unit comprises a rotating shaft fixing seat, a shaft sleeve, a first sealing ring, a third sealing ring, a positioning ring, a locking nut, a sealing nut and a second sealing ring which are sequentially arranged along the oscillating shaft.

Furthermore, the liquid level detection unit comprises a liquid level detection assembly, the liquid level detection assembly comprises magnetic steel and a position sensor PCB, the magnetic steel is arranged on a magnetic steel fixing seat, and the magnetic steel fixing seat is arranged at the other end of the oscillating shaft; the position sensor PCB is arranged on the position sensor support, and the position sensor PCB and the position sensor support are in coaxial relation with the magnetic steel through the positioning ring.

Furthermore, the liquid level detection unit comprises a liquid level detection assembly, the liquid level detection assembly comprises a swinging needle and a position switch, one end of the swinging needle is connected with the swinging shaft, and the other end of the swinging needle is in driving connection with the position switch.

Further, the liquid level detection unit comprises a specific gravity detection assembly, the specific gravity detection assembly comprises magnetic steel and a position sensor PCB, the magnetic steel is mounted on a magnetic steel fixing seat, and the magnetic steel fixing seat is mounted at the other end of the oscillating shaft; the position sensor PCB is arranged on the position sensor support, and the position sensor PCB and the position sensor support are in a coaxial relation with the magnetic steel through the positioning ring; the specific gravity detection assembly further comprises a spring traction mechanism, the spring traction mechanism comprises a spring and a spring fixing seat, one end of the spring is connected with the oscillating shaft through a pendulum needle, and the other end of the spring is installed on the spring fixing seat.

Further, a transparent cover plate is arranged in front of the shell.

The multifunctional liquid level detector provided by the invention is used for realizing liquid level detection and specific gravity detection by arranging three accessories with different structures in the shell with the same structure, simultaneously feeding detection information back to a control system, and realizing the function of maintaining the liquid level under the condition of matching with other components, such as a pump and a valve.

Drawings

The invention is further described below in conjunction with the appended drawings and the detailed description.

FIG. 1a is a first schematic structural diagram according to a first embodiment;

FIG. 1b is a schematic structural diagram of the first embodiment;

FIG. 1c is a schematic structural diagram of the first embodiment;

FIG. 1d is a schematic structural diagram of the first embodiment;

FIG. 2a is a schematic structural diagram of the second embodiment;

FIG. 2b is a schematic structural diagram of the second embodiment;

FIG. 2c is a schematic structural diagram of the second embodiment;

FIG. 2d is a fourth schematic structural diagram according to the second embodiment;

FIG. 3a is a first schematic structural diagram according to a third embodiment;

FIG. 3b is a schematic structural diagram of the second embodiment;

FIG. 3c is a third schematic structural diagram according to a third embodiment;

fig. 3d is a schematic structural diagram of the third embodiment.

The reference numbers in the figures mean:

FIG. 1 a-FIG. 1 d:

1-1, a transparent cover plate; 1-2, floating ball; 1-3, a shell; 1-4, a limiting block; 1-5, swinging arm; 1-6, a position sensor support; 1-7, a swing shaft; 1-8, a rotating shaft fixing seat; 1-9, shaft sleeve; 1-10, a first sealing ring; 1-11, locking nut; 1-12, sealing screw cap; 1-13, a position sensor PCB; 1-14, magnetic steel; 1-15, magnetic steel fixing seat; 1-16, a second sealing ring; 1-17, a positioning ring; 1-18, a third sealing ring;

fig. 2a-2 d:

2-1, a transparent cover plate; 2-2, floating balls; 2-3, a shell; 2-4, a limiting block; 2-5, swinging arms; 2-6, swinging the needle; 2-7, a position switch; 2-8, a swing shaft; 2-9, a rotating shaft fixing seat; 2-10, shaft sleeve; 2-11, a first sealing ring; 2-12, locking a nut; 2-13, sealing the screw cap; 2-14, a second sealing ring; 2-15, a positioning ring; 2-16, a third sealing ring;

fig. 3a-3 d:

3-1, a transparent cover plate; 3-2, floating balls; 3-3, a shell; 3-4, a limiting block; 3-5, swinging arms; 3-6, a position sensor support; 3-7, swinging the needle; 3-8, a swing shaft; 3-9, a spring; 3-10 parts of spring fixing seat; 3-11, a rotating shaft fixing seat; 3-12, shaft sleeve; 3-13, a first sealing ring; 3-14, locking nut; 3-15, sealing the screw cap; 3-16, a position sensor PCB; 3-17, magnetic steel; 3-18, magnetic steel fixing seat; 3-19, a second sealing ring; 3-20, a positioning ring; 3-21 and a third sealing ring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

To the problem that prior art exists, this scheme provides a multi-functional liquid level detector, through realize analog quantity output type, switching value output type, three kinds of different functions of proportion measurement type at the inside different annex of three kinds of structures that sets up of the casing that the structure is the same, be used for observing and maintaining the cooling water level, exhaust to fuel, drainage and proportion detect, carry out the liquid level to engine oil and maintain and engine oil quality detects, only can realize through changing inside accessory.

Three different functions of the multi-functional liquid level detector are specified below by means of three embodiments.

The first embodiment is as follows: analog quantity output type

As shown in figures 1a-1d, the analog output type multifunctional liquid level detector provided by the embodiment comprises a housing 1-3, a transparent cover plate 1-1 is arranged in front of the housing 1-3, a floating ball 1-2 is arranged in the housing 1-3, the floating ball 1-2 is welded with a swing arm 1-5, a swing shaft 1-7 is arranged on the swing arm 1-5, the floating ball 1-2 and the swing arm 1-5 can drive the swing shaft 1-7 to swing together, the swing shaft 1-7 penetrates through the housing 1-3 to extend to the back, and a rotating shaft fixing seat 1-8, a shaft sleeve 1-9, a first sealing ring 1-10, a third sealing ring 1-18, a positioning ring 1-17, a locking nut 1-11, a sealing nut 1-12, a rotating shaft fixing seat 1-8, a, Second seal ring 1-16, etc.

The other end of the swinging shaft 1-7 is provided with a magnetic steel fixing seat 1-15 on which magnetic steels 1-14 are arranged, a position sensor PCB1-13 is arranged on a position sensor support 1-6, and a position sensor PCB1-13 and the position sensor support 1-6 keep a coaxial relation with the magnetic steels 1-14 through a positioning ring 1-17.

Meanwhile, the limiting blocks 1-4 are arranged in cooperation with the swing arms 1-5 and used for ensuring that the swing arms 1-5 swing within a corresponding range and ensuring monitoring accuracy.

When the analog quantity output type multifunctional liquid level detector based on the structure is applied specifically, when liquid flows into/out of the shell, the liquid level begins to change, the floating ball 1-2 begins to rise or fall under the action of buoyancy, the floating ball 1-2 drives the swing arm 1-5 and the swing shaft 1-7 to drive the magnetic steel 1-14 to rotate, the position sensor PCB1-13 detects the rotation of the magnetic steel 1-14 and the change of a magnetic field, and then outputs an electric signal related to the position, and transmits the signal to the control system, so that the height of the liquid level is judged (the liquid position is continuously measured). When the liquid level is lowered and reaches a set low level, the control system starts a liquid supplementing program, starts the pump and the valve devices, and supplements liquid to the supplemented devices, and when the liquid level is raised and reaches a set high level, the control system closes the pump and the valve devices, and stops the liquid supplementing action.

Example two: switching value output type

As shown in figures 2a-2d, the switching value output type multifunctional liquid level detector provided by the embodiment comprises a shell 2-3, a transparent cover plate 2-1 is arranged in front of the shell 2-3, a floating ball 2-2 is arranged in the shell 2-3, the floating ball 2-2 is welded with a swing arm 2-5, a swing shaft 2-8 is arranged on the swing arm 2-5, the floating ball 2-2 and the swing arm 2-5 can drive the swing shaft 2-8 to swing together, the swing shaft 2-8 penetrates through the shell 2-3 to extend to the back, and a rotating shaft fixing seat 2-9, a shaft sleeve 2-10, a first sealing ring 2-11, a third sealing ring 2-16, a positioning ring 2-15, a locking nut 2-12, a sealing nut 2-13, a second sealing ring and a second sealing ring 2-5 are sequentially arranged along the shaft, Second seal ring 2-14, etc.

On the basis of the analog quantity type multifunctional liquid level detector, magnetic steel, a magnetic steel fixing seat, a position sensor PCB and a position sensor support are removed, a position switch 2-7 is installed below a swinging needle 2-6, the switch is driven to act through the rotation of the swinging needle 2-6, and the swinging needle 2-6 and the other end of a swinging shaft 2-8 are fixedly installed together.

Meanwhile, the limiting blocks 2-4 are arranged in cooperation with the swing arms 2-5 and used for ensuring that the swing arms 2-5 swing within a corresponding range and ensuring monitoring accuracy.

When the switching value output type multifunctional liquid level detector based on the structure is applied specifically, when liquid flows into/out of the shell, the liquid level begins to change, the floating ball 2-2 begins to rise or fall under the action of buoyancy, the floating ball 2-2 drives the swing arm 2-5 and the swing shaft 2-8 drives the swing needle 2-6 to rotate, the swing needle 2-6 drives the position switch 2-7 to act, when the liquid level is up, the switch is closed, when the liquid level is down, the switch is opened, a switch on-off signal is output to the control system, the signal is transmitted to the control system, and the control system can judge the height of the liquid level according to the signal (only can measure the highest point and the lowest point of the liquid level). When the liquid level is lowered and the position switch 2-7 is triggered to be opened, the control system starts a liquid supplementing program, starts a pump and valve devices, supplements liquid to the supplemented devices, when the liquid rises to reach a set position, the position switch 2-7 is closed, the control system closes the pump and valve devices, and the liquid supplementing action is stopped.

Example three: specific gravity measuring type

As shown in figures 3a-3d, the specific gravity measurement type multifunctional liquid level detector provided by the embodiment comprises a housing 3-3, a transparent cover plate 3-1 is arranged on the front of the housing 3-3, a floating ball 3-2 is arranged in the housing 3-3, the floating ball 3-2 is welded with a swing arm 3-5, a swing shaft 3-8 is arranged on the swing arm 3-5, the floating ball 3-2 and the swing arm 3-5 can drive the swing shaft 3-8 to swing together, the swing shaft 3-8 penetrates through the housing 3-8 to extend to the back, and a rotating shaft fixing seat 3-11, a shaft sleeve 3-12, a first sealing ring 3-13, a third sealing ring 3-21, a positioning ring 3-20, a locking nut 3-14, a sealing nut 3-15 and a sealing ring are sequentially arranged along the axial direction, Second seal ring 3-19, etc.

The other end of the swinging shaft 3-8 is provided with a magnetic steel fixing seat 3-18 on which magnetic steel 3-17 is arranged, the position sensor PCB3-16 is arranged on the position sensor support 3-6, and the position sensor PCB3-16 and the position sensor support 3-6 keep a coaxial relation with the magnetic steel 3-17 through a positioning ring 3-20.

The spring traction mechanism is added on the basis of the analog quantity type multifunctional liquid level detector, and comprises a spring 3-9 and a spring fixing seat 3-10.

Wherein, one end of the spring 3-9 is connected with the swinging shaft 3-8 through the swinging needle 3-7, and the other end is arranged on the spring fixing seat 3-10.

Meanwhile, the limiting blocks 3-4 are arranged in cooperation with the swing arms 3-5 and used for ensuring that the swing arms 3-5 swing within a corresponding range and ensuring monitoring accuracy.

Based on the analog quantity output type multifunctional liquid level detector with the structure, in specific application, when liquid flows into the shell, the floating ball 3-2 rises under the action of buoyancy and pulls the spring 3-9, when the buoyancy and the spring force reach balance, the floating ball 3-2 stops rising, and at the moment, a corresponding position value can be measured through the position sensor PCB 3-16. When the density of the liquid filled in the cavity is different, the buoyancy force borne by the floating ball 3-2 is different (according to the Archimedes principle, the floating ball is completely immersed in the liquid, the volume of the liquid discharged by the floating ball is certain, but the weight of the liquid discharged by the floating ball is different due to different liquid densities, the buoyancy force borne by the floating ball is different in different liquids, when the density is high, the buoyancy force borne by the floating ball is high, and when the density is low, the buoyancy force borne by the floating ball is low), the length of the pull-open spring 3-9 is also different, and the position value of the floating ball is further influenced. That is, in the liquid with different densities, the position values measured by the position sensor PCBs 3-16 are different, and the density (specific gravity) of the liquid can be detected by the position sensor PCBs 3-16 through calibration.

The multifunctional liquid level detector provided by the scheme has the advantages that the accessories with different structures are arranged in the shell with the same structure, and under the condition that other parts (such as a pump and a valve) are matched, liquid flows in from the inlet, flows out from the outlet and then flows into the part needing to be supplied with the liquid, and the balancing port at the top can be used for balancing the air pressure in the part to be supplied. Can see liquid level height and liquid state through transparent cover, can feed back liquid level height signal to control system through the sensor of self subsidiary, control system can control the action of pump and valve according to this signal, maintains the height of liquid level to the realization is observed and is maintained the cooling water level, is discharged gas, drainage and specific gravity to fuel and is detected, is carried out the liquid level to engine oil and is maintained and engine oil quality detection.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.