Foam-containing pit liquid level measuring device

Abstract

The invention relates to the technical field of pit liquid level measurement, and discloses a foam-containing pit liquid level measuring device which comprises a mounting base, a filter screen is fixedly connected to the top of the mounting base, a connecting ring is fixedly connected to the top end of the filter screen, a supporting cylinder is fixedly inserted into the connecting ring, and a plurality of water inlets are formed in the bottom of the circumference of the supporting cylinder. Sliding grooves are formed in the inner walls of the two sides of the supporting cylinder, sliding blocks are slidably connected into the sliding grooves, and a connecting rod is fixedly connected between the two sliding blocks. The floating ball floats in the supporting cylinder under the buoyancy action of liquid, so that the ultrasonic refraction panel at the top of the floating ball is supported, then ultrasonic waves are transmitted to the ultrasonic refraction panel through the ultrasonic transmitting port of the ultrasonic transmitter, and then the ultrasonic waves are refracted by the ultrasonic refraction panel, so that the ultrasonic waves are reflected into the liquid. Therefore, the liquid level in the pit is measured by transmitting the ultrasonic waves and utilizing the refraction phenomenon of the ultrasonic waves, and the influence of foam on the measurement result is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pit liquid level measurement, in particular to a foam-containing pit liquid level measurement device. Background Art

[0002] The pit level measuring device is a device used to measure the level of liquid in a pit, and is mainly used in the fields of industry and environmental protection.

[0003] Existing pit level measurement devices mostly use ultrasonic transmitters to achieve measurement functions. However, there is a certain space between the foam generated inside the pit and the water level. The pit environment is complex, and the foam generated is caused by a variety of factors, such as chemical reactions, stirring or microbial activities of the substances in the pit. These foams have a certain thickness and unevenness. When using an ultrasonic transmitter to measure the liquid level, the ultrasonic wave encounters the foam layer during the propagation process. Due to the difference in physical properties between the foam and the liquid, the propagation path of the ultrasonic wave will change or produce reflection, scattering and other phenomena, resulting in deviations in the measurement results, which cannot accurately reflect the actual liquid level height in the pit, resulting in inaccurate data and overflow of pit wastewater. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a foam-containing pit liquid level measuring device, which is mainly used to solve the problems of inaccurate data, overflow of pit wastewater, and difficulty in manual cleaning.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for measuring the liquid level of a pit containing foam comprises a mounting seat, a filter screen is fixedly connected to the top of the mounting seat, a connecting ring is fixedly connected to the top of the filter screen, a support tube is fixedly inserted in the connecting ring, a plurality of water inlets are arranged at the bottom of the circumference of the support tube, inner walls on both sides of the support tube are provided with slide grooves, sliders are slidably connected in the slide grooves, a connecting rod is fixedly connected between the two sliders, a float is fixedly connected to the bottom end of the connecting rod, an ultrasonic refraction panel is fixedly connected to the top end of the connecting rod, an ultrasonic transmitter is fixedly connected to the top end of the support tube, the ultrasonic transmitter comprises a receiving box, the receiving box is arranged at the top end of the support tube, an ultrasonic transmitting port is arranged at the bottom of the receiving box, the ultrasonic transmitting port is arranged opposite to the ultrasonic refraction panel, and an antenna is fixedly connected to the outer wall of one side of the receiving box.

[0009] Furthermore, a plurality of connection blocks are fixedly connected to the circumferential outer wall of the mounting seat, and fastening bolts are threadedly inserted into the tops of the connection blocks.

[0010] Based on the above solution, a mounting box is clamped on the bottom of the mounting seat.

[0011] As a further solution of the present invention, the bottom inner wall of the installation box is fixedly connected to a motor, the output end of the motor is fixedly connected to a mounting plate, the top of the mounting plate is fixedly connected to a mounting frame, and the outer wall of the mounting frame is fixedly connected to multiple brushes and multiple arc plates.

[0012] Furthermore, the bottom end of the support tube is inserted into the mounting frame, and the circumference of the mounting frame is provided with a plurality of through openings, which are connected to the water inlet.

[0013] On the basis of the above-mentioned scheme, the filter screen is a cylindrical structure, and the filter screen is arranged around the outer side of the brush and the arc plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a foam-containing pit liquid level measuring device, which has the following beneficial effects:

[0016] 1. The float floats in the support tube under the buoyancy of the liquid, thereby supporting the ultrasonic refraction panel on the top. Then, the ultrasonic wave is transmitted to the ultrasonic refraction panel through the ultrasonic transmitting port of the ultrasonic transmitter, and then refracted by the ultrasonic refraction panel. The liquid level in the pit is measured by transmitting the ultrasonic wave and utilizing its refraction phenomenon, thereby avoiding the influence of foam on the measurement result.

[0017] 2. The mounting plate is rotated under the drive of the motor, thereby driving the mounting frame to rotate, and then driving the brush to brush the filter, thereby preventing impurities from clogging the mesh of the filter and affecting the entry of liquid.

[0018] 3. The motor drives the arc plate to rotate, so that the liquid diffuses and flows from the center to the surrounding areas, thereby preventing foam from adhering to the filter net to ensure the normal entry of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a foam-containing pit liquid level measuring device embodiment 1 proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the explosion structure of Example 1 of a foam-containing pit liquid level measuring device proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the enlarged structure of part A of Embodiment 1 of a foam-containing pit liquid level measuring device proposed by the present invention;

[0022] Figure 4This is a schematic cross-sectional structural diagram of Example 1 of a foam-containing pit liquid level measuring device proposed by the present invention.

[0023] In the figure: 1. mounting base; 2. connecting block; 3. fastening bolt; 4. mounting box; 5. motor; 6. mounting plate; 7. mounting frame; 8. brush; 9. curved plate; 10. connecting ring; 11. filter screen; 12. supporting cylinder; 13. slide groove; 14. slider; 15. connecting rod; 16. float; 17. ultrasonic refraction panel; 18. water inlet; 19. receiving box; 20. ultrasonic transmitter; 21. antenna. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 4 A device for measuring the liquid level of a pit containing foam comprises a mounting seat 1, a filter screen 11 is fixed to the top of the mounting seat 1 by bolts, a connecting ring 10 is fixed to the top of the filter screen 11 by bolts, a support tube 12 is fixedly inserted in the connecting ring 10, a plurality of water inlets 18 are arranged at the bottom of the circumference of the support tube 12, a slide groove 13 is arranged on the inner wall on both sides of the support tube 12, a slider 14 is slidably connected in the slide groove 13, a connecting rod 15 is welded between the two sliders 14, a floating ball 16 is fixed to the bottom end of the connecting rod 15, an ultrasonic refraction panel 17 is fixed to the top of the connecting rod 15 by bolts, the movement of the connecting rod 15 and the ultrasonic refraction panel 17 is guided by the slider 14 sliding in the slide groove 13, thereby improving the stability of the support of the ultrasonic refraction panel 17. Qualitatively, an ultrasonic transmitter 20 is fixed to the top of the support tube 12 by bolts. The ultrasonic transmitter 20 includes a receiving box 19. The receiving box 19 is arranged at the top of the support tube 12. An ultrasonic transmitting port is arranged at the bottom of the receiving box 19. The ultrasonic transmitting port is arranged opposite to the ultrasonic refraction panel 17. The float 16 floats in the support tube 12 under the buoyancy of the liquid, thereby supporting the ultrasonic refraction panel 17 on its top. Then, the ultrasonic wave is transmitted to the ultrasonic refraction panel 17 through the ultrasonic transmitting port of the ultrasonic transmitter 20, and then refracted by the ultrasonic refraction panel 17, so as to measure the liquid level in the pit by transmitting the ultrasonic wave and utilizing its refraction phenomenon. An antenna 21 is fixed to the outer wall of one side of the receiving box 19 by bolts.

[0026] A plurality of connecting blocks 2 are welded to the circumferential outer wall of the mounting seat 1, and fastening bolts 3 are inserted into the top threads of the connecting blocks 2. The pit liquid level measuring device is fixed to the bottom of the pit through the connecting blocks 2 and the fastening bolts 3. A mounting box 4 is clamped at the bottom of the mounting seat 1, and a motor 5 is fixed to the bottom inner wall of the mounting box 4 by bolts. A mounting disk 6 is fixed to the output end of the motor 5 by bolts, and a mounting frame 7 is fixed to the top of the mounting disk 6 by bolts. A plurality of brushes 8 and a plurality of arc plates 9 are fixed to the outer wall of the mounting frame 7 by bolts. The mounting disk 6 rotates under the drive of the motor 5, thereby driving the mounting frame 7 to rotate, and then driving the brush 8 to brush the filter screen 11, thereby preventing impurities from clogging the mesh of the filter screen 11. The bottom end of the support cylinder 12 is inserted into the mounting frame 7, and a plurality of through openings are provided on the circumference of the mounting frame 7, which are connected to the water inlet 18. The filter screen 11 is a cylindrical structure, and the filter screen 11 is arranged around the brush 8 and the outer side of the arc plate 9.

[0027] Working principle of this embodiment: when in use, first, the pit liquid level measuring device is fixed to the bottom of the pit through the connecting block 2 and the fastening bolts 3, then, the liquid in the pit enters the support tube 12 from the water inlet 18, then, the float 16 floats in the support tube 12 under the buoyancy of the liquid, thereby supporting the ultrasonic refraction panel 17 on the top thereof, then, the ultrasonic wave is emitted to the ultrasonic refraction panel 17 through the ultrasonic emission port of the ultrasonic transmitter 20, and then refracted by the ultrasonic refraction panel 17, thereby measuring the liquid level in the pit by emitting the ultrasonic wave and utilizing its refraction phenomenon;

[0028] Then, the motor 5 is started, and the mounting plate 6 is rotated under the drive of the motor 5, thereby driving the mounting frame 7 to rotate, and then driving the brush 8 to brush the filter screen 11, so as to prevent impurities from clogging the mesh of the filter screen 11. At the same time, the motor 5 drives the arc plate 9 to rotate, so that the liquid diffuses and flows from the center to the surroundings, thereby preventing foam from adhering to the filter screen 11.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A foam-containing pit liquid level measuring device, comprising a mounting seat (1), characterized in that: The top of the mounting seat (1) is fixedly connected to a filter screen (11), the top of the filter screen (11) is fixedly connected to a connecting ring (10), a supporting tube (12) is fixedly inserted in the connecting ring (10), a plurality of water inlets (18) are provided at the bottom of the circumference of the supporting tube (12), both sides of the inner wall of the supporting tube (12) are provided with sliding grooves (13), a sliding block (14) is slidably connected in the sliding groove (13), a connecting rod (15) is fixedly connected between the two sliding blocks (14), and a connecting rod (15) is fixedly connected at the bottom end of the connecting rod (15). The top of the floating ball (16) and the connecting rod (15) are fixedly connected to an ultrasonic refraction panel (17); the top of the supporting tube (12) is fixedly connected to an ultrasonic transmitter (20); the ultrasonic transmitter (20) includes a receiving box (19); the receiving box (19) is arranged at the top of the supporting tube (12); an ultrasonic transmitting port is arranged at the bottom of the receiving box (19); the ultrasonic transmitting port is arranged opposite to the ultrasonic refraction panel (17); and an antenna (21) is fixedly connected to an outer wall of one side of the receiving box (19).

2. A foam-containing pit liquid level measuring device according to claim 1, characterized in that: A plurality of connection blocks (2) are fixedly connected to the circumferential outer wall of the mounting seat (1), and fastening bolts (3) are threadedly inserted into the tops of the connection blocks (2).

3. A foam-containing pit liquid level measuring device according to claim 1, characterized in that: A mounting box (4) is clamped on the bottom of the mounting seat (1).

4. A foam-containing pit liquid level measuring device according to claim 3, characterized in that: The bottom inner wall of the installation box (4) is fixedly connected to a motor (5), the output end of the motor (5) is fixedly connected to a mounting plate (6), the top of the mounting plate (6) is fixedly connected to a mounting frame (7), and the outer wall of the mounting frame (7) is fixedly connected to a plurality of brushes (8) and a plurality of arc-shaped plates (9).

5. A foam-containing pit liquid level measuring device according to claim 1, characterized in that: The bottom end of the support tube (12) is inserted into the mounting frame (7), and the circumference of the mounting frame (7) is provided with a plurality of through openings, which are communicated with the water inlet (18).

6. A foam-containing pit liquid level measuring device according to claim 1, characterized in that: The filter screen (11) is a cylindrical structure, and the filter screen (11) is arranged around the brush (8) and the outer side of the arc plate (9).

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