CN220322496U

CN220322496U - Ultrasonic liquid level measuring device and SBR sewage treatment system

Info

Publication number: CN220322496U
Application number: CN202321153011.4U
Authority: CN
Inventors: 杨秋; 孙志科
Original assignee: Hunan Debang Environmental Protection Technology Co ltd
Current assignee: Hunan Debang Environmental Protection Technology Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2024-01-09
Anticipated expiration: 2033-05-15

Abstract

The utility model provides an ultrasonic liquid level measuring device and an SBR sewage treatment system, comprising: the isolating piece comprises a shell and an inner cavity, and a first opening and a second opening are respectively formed at two opposite ends of the isolating piece; the inner cavity is communicated with the outside through the first opening and the second opening; and an ultrasonic sensor for emitting ultrasonic waves and receiving reflected waves, and measuring a distance from the ultrasonic sensor to the ultrasonic reflection surface; the ultrasonic sensor is arranged at the position of the first opening or the second opening of the isolating piece; the ultrasonic sensor emitting ultrasonic waves toward the lumen; the measuring area is separated from other parts in the treatment tank by a separator, and the liquid level of the inner cavity is the same as the liquid level of other parts in the treatment tank; the ultrasonic sensor tests the height of the liquid level of the inner cavity; because the liquid in the inner cavity is separated from the treatment tank, the liquid is slightly influenced by foam or disturbance in the treatment tank, so that the testing accuracy of the ultrasonic sensor is improved.

Description

Ultrasonic liquid level measuring device and SBR sewage treatment system

Technical Field

The application relates to the field of environmental protection, in particular to an ultrasonic liquid level measuring device and an SBR sewage treatment system.

Background

An ultrasonic level meter is a digital level meter in which, during a measurement process, an ultrasonic pulse is reflected when it passes over the surface of a liquid, and the actual distance from the sensor to the surface of the liquid being measured is calculated by the time required between the emission and the final reception of the acoustic wave. Because it adopts non-contact measuring means, it can measure any medium, and can be widely used in the measurement of various solid and liquid materials.

SBR is a short term for a sequential batch type activated sludge process (Sequencing Batch Reactor Activated Sludge Process), which is an activated sludge sewage treatment technology operating in an intermittent aeration manner, and is also called a sequential batch type activated sludge process. The activated sludge biological treatment process is based on wastewater biological treatment activated sludge technology for degrading pollutants such as organic matters, ammonia nitrogen and the like under aerobic conditions by using microorganisms growing in a suspending way. The intermittent aeration mode is performed according to the time sequence, and the growth environment of the activated sludge is changed, so that the method is a wastewater treatment process widely accepted and used worldwide.

The ultrasonic liquid level meter has the advantages of non-contact, low failure rate, sensitive response, accurate measurement and convenient automatic control, so that the ultrasonic liquid level meter is widely applied to the field of environmental protection water treatment. However, when the ultrasonic liquid level sensor is used in the SBR sewage treatment system or the regulating tank with air stirring, the liquid level distortion fault often occurs, and the main reason is that more industrial wastewater generates foam during aeration or air stirring, the propagation and reflection of the ultrasonic wave are disturbed, and the ultrasonic liquid level sensor cannot receive a feedback signal.

Disclosure of Invention

In order to solve the technical problems, the utility model provides an ultrasonic liquid level measuring device, which is provided with a partition member for separating a measuring area from other parts in a treatment tank, wherein the partition member is provided with a first opening and a second opening which are respectively positioned on two end surfaces of the partition member, and the liquid level in the partition member is the same as the liquid level at other positions of the treatment tank according to the principle of a communicating vessel; the ultrasonic sensor reflects the height of the water surface in the treatment pool by testing the height of the water level in the isolating piece; because the liquid in the ultrasonic sensor is separated from the treatment tank, the ultrasonic sensor is less influenced by foam in the treatment tank, so that the testing accuracy of the ultrasonic sensor is improved.

Specifically, the ultrasonic liquid level measuring device provided by the utility model comprises:

a separator comprising a housing and an inner cavity, opposite ends of the separator being open respectively

A first opening and a second opening are arranged; the inner cavity is communicated with the outside through the first opening and the second opening; the method comprises the steps of,

an ultrasonic sensor for emitting ultrasonic waves and receiving reflected waves, and measuring the distance between the ultrasonic sensor and the ultrasonic reflection surface; the ultrasonic sensor is arranged at the position of the first opening or the second opening of the isolating piece; the ultrasonic sensor emits ultrasonic waves toward the lumen.

Optionally, the spacer is a tubular structure surrounded by the housing, and openings at two ends of the spacer are the first opening and the second opening respectively.

Optionally, the ultrasonic sensor is located at the first opening; the housing is provided with a blocking piece at the second opening position; the blocking piece occupies the space of the second opening to reduce the opening degree of the second opening.

Optionally, the barrier is a conical structure comprising a tip and a bottom end, the bottom end being located outside the barrier; the tip enters the lumen through the second opening; the maximum distance of the side wall of the barrier from the edge of the second opening is not 0.

Optionally, the area of the bottom end of the barrier is larger than the area of the second opening.

Optionally, the axis of the blocking member coincides with the perpendicular bisector of the second opening.

Optionally, the ultrasonic liquid level measurement device further comprises a liquid adding component for adding an antifoaming agent into the inner cavity.

Optionally, the liquid adding assembly includes:

the liquid storage box is used for storing the defoaming agent; the method comprises the steps of,

the liquid pump comprises an inlet and an outlet, the inlet of the liquid pump is connected with one end of a liquid inlet pipe, and the other end of the liquid inlet pipe extends into the liquid storage box; the outlet is connected with one end of the liquid outlet pipe, and the other end of the liquid outlet pipe extends into the inner cavity.

Optionally, the ultrasonic liquid level measurement device further comprises a fixing piece, wherein the fixing piece is used for fixing the isolation piece to a tank wall of a treatment tank of the SBR sewage treatment system.

The utility model also provides an SBR sewage treatment system, which comprises:

the treatment tank is used for containing wastewater to be treated, and the ultrasonic liquid level measuring device is arranged on the tank wall of the treatment tank; the ultrasonic liquid level measuring device is the ultrasonic liquid level measuring device; the first opening and the second opening of the isolating piece of the ultrasonic liquid level measuring device are respectively positioned on two end surfaces of the isolating piece in the vertical direction;

the aeration assembly comprises a gas pipe and an aeration device, the gas pipe extends to the bottom of the treatment tank, and the aeration device is arranged on the part of the gas pipe located in the treatment tank; the aeration device is used for conveying the gas in the gas conveying pipe into the treatment tank

Compared with the prior art, the utility model provides an ultrasonic liquid level measuring device, which is provided with a partition member for separating a measuring area from other parts in a treatment tank, wherein the partition member is provided with a first opening and a second opening which are respectively positioned on two end surfaces of the partition member, and the liquid level in the partition member is the same as the liquid level at other positions of the treatment tank according to the principle of a communicating vessel; the ultrasonic sensor reflects the height of the water surface in the treatment pool by testing the height of the water level in the isolating piece; because the liquid in the ultrasonic sensor is separated from the treatment tank, the ultrasonic sensor is less influenced by foam in the treatment tank, so that the testing accuracy of the ultrasonic sensor is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an ultrasonic liquid level measurement device provided by the application.

Description of the drawings: 1. an ultrasonic sensor; 2. a spacer; 21. a housing; 22. an inner cavity; 221. a first opening; 222. a second opening; 3. a first fixing member; 4. a second fixing member; 6. a barrier; 7. a liquid storage box; 8. and a liquid outlet pipe.

Description of the embodiments

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements defined by the statement "include one … …" are not excluded from the package.

The ultrasonic liquid level measuring device provided by the utility model comprises:

the separator 2 comprises a shell 21 and an inner cavity 22, wherein a first opening and a second opening are respectively formed at two opposite ends of the separator 2; the inner chamber 22 communicates with the outside through the first opening 221 and the second opening 222; an ultrasonic sensor 1 for emitting ultrasonic waves and receiving reflected waves, and measuring the distance of the ultrasonic reflection surface from the ultrasonic sensor 1; the ultrasonic sensor 1 is installed on the position of the isolating piece 2 at the first opening 221 or the second opening 222; the ultrasonic sensor 1 emits ultrasonic waves toward the inner chamber 22. The first opening or the second opening 222 is located at the lower end of the separator 2, in one embodiment, the second opening 222 is located at the lower end of the separator 2, the lower end of the separator 2 enters a treatment tank, the treatment tank contains waste liquid, the second opening 222 of the separator 2 is immersed below the liquid level of the waste liquid, the first opening 221 is located at the upper end of the separator 2 and above the liquid level of the waste liquid, the inner cavity 22 is communicated with the atmosphere, the liquid level in the separator 2 is consistent with the liquid level in the treatment tank according to the principle of a communicating vessel, the ultrasonic sensor 1 is mounted on the separator 2, it is understood that the ultrasonic sensor 1 comprises a transmitting device for transmitting ultrasonic waves, the transmitting device can be located at the first opening 221, the ultrasonic waves are transmitted into the inner cavity 22, the ultrasonic waves generate reflected waves at the liquid level of the inner cavity 22, and the ultrasonic sensor 1 can also receive the reflected waves; it will be appreciated that the ultrasonic sensor 1 further has a processor for calculating the distance of the liquid level of the inner chamber 22 from the ultrasonic sensor 1 based on the reflected wave, thereby calculating the height of the liquid level in the inner chamber 22, and the height of the liquid level in the treatment tank can be obtained because the height of the liquid level in the inner chamber 22 is the same as the height of the liquid level in the treatment tank; the ultrasonic sensor 1 measures the liquid level once at intervals of a first time, thereby monitoring the liquid level of the treatment tank. In the present utility model, since the liquid in the inner chamber 22 is separated from the treatment tank, it is less affected by the foam in the treatment tank, thereby improving the test accuracy of the ultrasonic sensor.

It can be understood that the ultrasonic sensor 1 is an ultrasonic ranging sensor in the prior art, and the specific structure thereof is the prior art and will not be described herein.

In an alternative embodiment, the spacer 2 is a tubular structure surrounded by the housing 21, and the openings at two ends thereof are the first opening 221 and the second opening 222, respectively.

In an alternative embodiment, the cross-section of the tubular structure may be circular, rectangular, or polygonal, and the embodiment is not limited herein.

In an alternative embodiment, the tubular structure is circular in cross-section and the tubular structure is a circular tubular structure.

In an alternative embodiment, the outer shell of the separator 2 is made of a metallic material, and the outer surface of the separator 2 may be coated with a corrosion-preventing coating in order to avoid corrosion by waste liquid. The anticorrosive coating can be anticorrosive paint in the prior art.

It will be appreciated that the second opening 222 is the opening at the lower end of the tubular structure; the first opening 221 is an opening at the upper end of the tubular structure; in actual use, the tubular spacer 2 is placed vertically, the second opening 222 at the bottom end thereof is located below the liquid surface of the treatment tank, and the first opening 221 is located above the liquid surface of the treatment tank.

In an alternative embodiment, the ultrasonic sensor 1 is located at the first opening 221; the housing 21 is provided with a blocking member 6 at the position of the second opening 222; the blocking member 6 reduces the opening degree of the second opening 222 by occupying the space of the second opening 222. After the opening degree of the second opening 222 is reduced, air bubbles cannot enter the inner cavity 22 from the second opening 222, so that the influence of the air bubbles on the liquid level measurement is avoided. It is understood that the blocking member 6 may be located at a middle position of the second opening 222, and a distance between an outer sidewall of the blocking member 6 and an edge of the second opening 222 is a gap through which the liquid flows.

In an alternative embodiment, the barrier 6 is a conical structure comprising a tip and a bottom end, said bottom end being located outside the barrier 2; the tip enters the lumen 22 through the second opening 222; the maximum distance of the side wall of the barrier 6 from the edge of the second opening 222 is not 0; in an alternative embodiment, the area of the bottom end of the barrier 6 is larger than the area of the second opening 222. In an alternative embodiment, the axis of the barrier 6 coincides with the bisector of the second opening 222. In the above embodiment, the outer surface of the blocking member 6 is a slope, and the solid waste in the inner cavity 22 may enter the treatment tank along the slope, but the solid waste in the treatment tank does not easily enter the inner cavity 22 through the gap between the blocking member 6 and the second opening 222. The second opening 222 functions to circulate liquid and to drain the solid waste within the interior chamber 22 to a disposal basin. In an alternative embodiment, the blocking member 6 is fixedly mounted to the isolating member 2, alternatively the blocking member 6 may be connected to the isolating member 2 by a connecting member, more specifically a first end of the connecting member is connected to the blocking member 6 and a second end of the connecting member is connected to the isolating member 2; in an alternative embodiment, the blocking member 6 is movable in a vertical direction, and is driven to move by the first driving member, the opening of the second opening 222 is adjusted by the blocking member 6 moving in the vertical direction, the blocking member 6 moves from top to bottom, the opening of the second opening 222 is gradually increased, and when the blocking member 6 moves from bottom to top, the opening of the second opening 222 is gradually decreased.

In an alternative embodiment, the ultrasonic level measurement device further comprises a liquid filling assembly for adding an antifoaming agent into the inner chamber 22. Optionally, the liquid adding assembly includes: a liquid storage box 7 for storing an antifoaming agent; and a liquid pump comprising an inlet and an outlet, wherein the inlet is connected with one end of a liquid inlet pipe, and the other end of the liquid inlet pipe extends into the liquid storage box 7; the outlet is connected with one end of the liquid outlet pipe 8, and the other end of the liquid outlet pipe 8 extends into the inner cavity 22. The defoamer enters the inner cavity 22, so that bubbles in the inner cavity 22 are eliminated, and the testing precision of the ultrasonic sensor 1 is improved. The defoamer can be one of the prior art. In an alternative embodiment, a shower head is mounted at the end of the outlet pipe 8 located in the inner cavity 22, for uniformly spraying the defoaming agent on the liquid surface in the inner cavity 22.

In an alternative embodiment, the ultrasonic level measurement device further comprises a fixing member for fixing the partition member 2 to a wall of a treatment tank of the SBR sewage treatment system. Specifically, the fixing pieces comprise a first fixing piece 3 and a second fixing piece 4; the first fixing piece 3 is used for fixing the upper end of the isolation piece 2, and the second fixing piece 4 is used for fixing the lower end of the isolation piece 2. In an alternative embodiment, the fixing member has a rod-shaped structure, including a first end and a second end, and the first end of the fixing member is fixedly connected with the spacer 4; the second end of the fixing piece is fixedly connected with the wall of the treatment tank of the SBR sewage treatment system. The fixed connection may be by using bolts to connect the two together.

The present utility model also provides an SBR sewage treatment system, which in one embodiment includes:

the treatment tank is used for containing wastewater to be treated, and the ultrasonic liquid level measuring device is arranged on the tank wall of the treatment tank; the ultrasonic liquid level measuring device is the ultrasonic liquid level measuring device; the first opening 221 and the second opening 222 of the isolating piece 2 of the ultrasonic liquid level measuring device are respectively positioned on two end surfaces of the isolating piece 2 in the vertical direction; it may be that the tubular partition 2 is placed vertically with its second opening 222 below the liquid level of the treatment tank, see fig. 1.

The foregoing is only a specific embodiment of the utility model so that those skilled in the art may understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic liquid level measurement device, comprising:

the isolating piece (2) comprises a shell (21) and an inner cavity (22), and a first opening and a second opening are respectively formed at two opposite ends of the isolating piece (2); the inner cavity (22) communicates with the outside through the first opening (221) and the second opening (222); the method comprises the steps of,

an ultrasonic sensor (1) for emitting ultrasonic waves and receiving reflected waves, and measuring the distance between the ultrasonic sensor (1) and the ultrasonic reflection surface; the ultrasonic sensor (1) is arranged at the position of the first opening (221) or the second opening (222) of the isolating piece (2); the ultrasonic sensor (1) emits ultrasonic waves towards the inner cavity (22); the isolating piece (2) is a tubular structure surrounded by the shell (21), and openings at two ends of the isolating piece are the first opening (221) and the second opening (222) respectively; the ultrasonic sensor (1) is positioned at the first opening (221); the housing (21) is provided with a blocking piece (6) at the position of the second opening (222); the barrier (6) reduces the opening of the second opening (222) by occupying the space of the second opening (222).

2. The ultrasonic level measurement device according to claim 1, characterized in that the barrier (6) is a conical structure comprising a tip and a bottom end, the bottom end being located outside the barrier (2); the tip enters the lumen (22) through the second opening (222); the maximum distance of the side wall of the barrier (6) from the edge of the second opening (222) is not 0.

3. The ultrasonic level measurement device according to claim 2, characterized in that the area of the bottom end of the barrier (6) is larger than the area of the second opening (222).

4. An ultrasonic level measurement device according to claim 3, characterized in that the axis of the baffle (6) coincides with the bisector of the second opening (222).

5. The ultrasonic level measurement device according to claim 1, further comprising a liquid filling assembly for adding an antifoaming agent into the inner chamber (22).

6. The ultrasonic level measurement device of claim 5, wherein the filling assembly comprises:

a liquid storage box (7) for storing the defoaming agent; the method comprises the steps of,

the liquid pump comprises an inlet and an outlet, the inlet of the liquid pump is connected with one end of a liquid inlet pipe, and the other end of the liquid inlet pipe extends into the liquid storage box (7); the outlet is connected with one end of the liquid outlet pipe (8), and the other end of the liquid outlet pipe (8) extends into the inner cavity (22).

7. The ultrasonic level measurement device according to claim 1, further comprising a fixing member for fixing the spacer member (2) to a tank wall of a treatment tank of an SBR sewage treatment system.

8. An SBR sewage treatment system comprising:

the treatment tank is used for containing wastewater to be treated, and the ultrasonic liquid level measuring device is arranged on the tank wall of the treatment tank; the ultrasonic liquid level measurement device is the ultrasonic liquid level measurement device according to any one of claims 1 to 7; a first opening (221) and a second opening (222) of the isolation piece (2) of the ultrasonic liquid level measuring device are respectively positioned on two end faces of the isolation piece (2) in the vertical direction;

the aeration assembly comprises a gas pipe and an aeration device, the gas pipe extends to the bottom of the treatment tank, and the aeration device is arranged on the part of the gas pipe located in the treatment tank; the aeration device is used for conveying the gas in the gas conveying pipe into the treatment tank.