Ultrasonic liquid level measuring mechanism for sewage pool and sewage treatment equipment

Abstract

The utility model provides an ultrasonic liquid level measuring mechanism for a sewage pool and sewage treatment equipment. The ultrasonic liquid level measuring mechanism for the sewage pool comprises an overhanging bracket, an ultrasonic liquid level meter and an ultrasonic absorption sheet, the overhanging bracket is transversely mounted on a sewage pool; the second end of the overhanging bracket is positioned above the liquid level in the sewage pool; the ultrasonic liquid level meter is mounted at the second end of the cantilever bracket; the ultrasonic absorption sheet is used for being mounted on the inner side wall of the sewage pool and is positioned between the overhanging bracket and the liquid level in the sewage pool; the horizontal distance between the ultrasonic liquid level meter and the ultrasonic absorption sheet is less than 20cm, the part of the ultrasonic wave, which is transmitted to the inner side wall of the sewage pool, is absorbed by the ultrasonic absorption sheet, and the part of the ultrasonic wave, which is transmitted to the liquid level in the sewage pool, can be applied to accurately measuring the height of the liquid level in the sewage pool. Meanwhile, the ultrasonic liquid level meter is closer to the first end of the overhanging support, so that compression on the overhanging support is reduced, and pressure damage to the overhanging support is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of sewage treatment, and particularly relates to an ultrasonic liquid level measuring assembly for a sewage tank and a sewage treatment device. BACKGROUND

[0002] When sewage treatment is performed on a sewage tank, the volume of sewage treatment needs to be determined by measuring the liquid level height of sewage in the sewage tank. At present, most manufacturers usually measure the liquid level of sewage in the sewage tank by using an ultrasonic liquid level sensor such as disclosed in Chinese patent document CN215491966U. Generally, in order to reduce the ultrasonic waves emitted by the ultrasonic liquid level sensor from bouncing off the inner side wall of the sewage tank, the ultrasonic liquid level sensor needs to be erected to the center position of the sewage tank by a support to reduce the influence of the bounced ultrasonic waves on the measurement accuracy of the ultrasonic liquid level sensor. In most cases, the support needs to be extended by a length of not less than 1 m, at which time the ultrasonic liquid level sensor suspended at the end of the support is prone to cause compression to the support, so that not only additional reinforcement needs to be performed on the support, but also the support is more prone to damage after long-time use. Meanwhile, when the ultrasonic liquid level sensor is subsequently maintained, it is also inconvenient to operate the ultrasonic liquid level sensor. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide an ultrasonic liquid level measuring assembly for a sewage tank and a sewage treatment device which are more convenient to maintain and more accurate in sewage liquid level measurement.

[0004] The purpose of the present disclosure is achieved by the following technical solutions:

[0005] An ultrasonic liquid level measuring mechanism for a sewage tank, comprising:

[0006] a cantilever support, the cantilever support being used for transversely mounting on the sewage tank; a first end of the cantilever support being used for fixedly connecting to the sewage tank, and a second end of the cantilever support being located above the liquid surface in the sewage tank;

[0007] an ultrasonic liquid level meter, the ultrasonic liquid level meter being mounted at the second end of the cantilever support, and an ultrasonic wave emitting end of the ultrasonic liquid level meter being used for being directed towards the liquid surface in the sewage tank;

[0008] The ultrasonic liquid level measuring mechanism for the sewage tank further comprises an ultrasonic wave absorbing sheet;

[0009] the ultrasonic wave absorbing sheet being used for being mounted on the inner side wall of the sewage tank and being located between the cantilever support and the liquid surface in the sewage tank; the horizontal distance between the ultrasonic liquid level meter and the ultrasonic wave absorbing sheet being below 20 cm, and the ultrasonic wave absorbing sheet being used for absorbing the ultrasonic waves emitted by the ultrasonic wave emitting end of the ultrasonic liquid level meter.

[0010] In some embodiments, the length of the cantilevered support is 20-30 cm.

[0011] In some embodiments, the ultrasonic wave absorbing sheet is a rubber sheet or a sound-absorbing foam sheet.

[0012] In some embodiments, the ultrasonic wave absorbing sheet comprises, in sequence, an adhesive inner layer, a sound-absorbing foam layer, and a rubber protective surface layer, and the adhesive inner layer is configured to be attached to the inner sidewall of the sewage tank.

[0013] In some embodiments, the first end of the cantilevered support is connected to the sewage tank by screw locking.

[0014] In some embodiments, the ultrasonic liquid level measuring mechanism for sewage tank further comprises a digital display assembly, and the digital display assembly is electrically connected to the ultrasonic liquid level meter.

[0015] In some embodiments, the digital display assembly comprises a support column, an instrument box, and a transmitter, the support column is vertically arranged on the sewage tank, and the instrument box is installed on the top of the support column; the transmitter is arranged in the instrument box and is electrically connected to the ultrasonic liquid level meter through a cable.

[0016] In some embodiments, the cable is provided with a protective tube; and / or,

[0017] The cantilevered support is a channel steel support.

[0018] In some embodiments, the digital display assembly further comprises a grounding electrode, and the grounding electrode is electrically connected to the transmitter, and the grounding electrode is configured to be arranged underground.

[0019] A sewage treatment device comprising the ultrasonic liquid level measuring mechanism for sewage tank of any of the above embodiments.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] The ultrasonic liquid level measuring mechanism for sewage pool, after the ultrasonic wave absorbing sheet is installed on the inner side wall of the sewage pool, because the ultrasonic wave absorbing sheet is located between the cantilever support and the liquid surface in the sewage pool, the ultrasonic wave emitting end of the ultrasonic liquid level meter is directed to the liquid surface in the sewage pool, after the ultrasonic wave emitting end of the ultrasonic liquid level meter with a horizontal distance of 20 cm or less from the ultrasonic wave absorbing sheet emits ultrasonic waves, the part of the ultrasonic waves propagating to the inner side wall of the sewage pool will be absorbed by the ultrasonic wave absorbing sheet, and the part of the ultrasonic waves propagating to the liquid surface in the sewage pool will be applied to accurately measure the liquid level height in the sewage pool. At the same time, because the horizontal distance between the ultrasonic wave absorbing sheet and the ultrasonic liquid level meter is 20 cm or less, the ultrasonic liquid level meter is closer to the first end of the cantilever support, that is, the horizontal force arm of the cantilever support is shortened, thereby reducing the compression of the cantilever support, so that not only the compression loss of the cantilever support is reduced, but also the staff can more conveniently operate the ultrasonic liquid level sensor during maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be considered as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The state diagram of the ultrasonic liquid level measuring mechanism for sewage pool of an embodiment of the present disclosure installed in the sewage pool;

[0024] Figure 2 For Figure 1 The local enlarged view shown in A in the middle.

[0025] Reference signs:

[0026] 100, cantilever support; 110, screw;

[0027] 200, ultrasonic liquid level meter; 210, ultrasonic wave emitting end;

[0028] 300, ultrasonic wave absorbing sheet; 310, adhesive inner layer; 320, sound-absorbing foam layer; 330, rubber protective surface layer;

[0029] 410, support column; 420, instrument box; 430, transmitter; 440, cable; 450, grounding electrode. DETAILED DESCRIPTION

[0030] For the purposes of this disclosure, particular embodiments will now be described in greater detail with reference to the drawings attached. The preferred embodiments of the disclosure are shown in the drawings. However, the disclosure can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art.

[0031] It is noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar expressions are used for illustrative purposes only and are not intended to be limiting.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] In order to better understand the technical solutions and beneficial effects of the disclosure, the disclosure will be further described in detail below in combination with specific embodiments:

[0034] Please refer to Figure 1 An ultrasonic liquid level measuring mechanism for a sewage tank according to an embodiment includes a cantilever support 100, an ultrasonic liquid level meter 200, and an ultrasonic wave absorbing sheet 300. The cantilever support 100 is configured to be horizontally installed on the sewage tank. A first end of the cantilever support 100 is configured to be fixedly connected to the sewage tank, and a second end of the cantilever support 100 is located above the liquid surface in the sewage tank. The ultrasonic liquid level meter 200 is installed at the second end of the cantilever support 100, and an ultrasonic wave emitting end 210 of the ultrasonic liquid level meter 200 is configured to be directed toward the liquid surface in the sewage tank. The ultrasonic wave absorbing sheet 300 is configured to be installed on the inner side wall of the sewage tank and located between the cantilever support 100 and the liquid surface in the sewage tank. The horizontal distance between the ultrasonic liquid level meter 200 and the ultrasonic wave absorbing sheet 300 is less than 20 cm, and the ultrasonic wave absorbing sheet 300 is configured to absorb the ultrasonic waves emitted by the ultrasonic wave emitting end 210 of the ultrasonic liquid level meter 200.

[0035] It can be understood that after the ultrasonic absorption sheet 300 is installed on the inner side wall of the sewage tank, since the ultrasonic absorption sheet 300 is located between the overhanging support 100 and the liquid surface in the sewage tank, the ultrasonic emission end 210 of the ultrasonic liquid level meter 200 is directed towards the liquid surface in the sewage tank. After the ultrasonic emission end 210 of the ultrasonic liquid level meter 200 which is horizontally spaced apart from the ultrasonic absorption sheet 300 by a distance of less than 20 cm emits ultrasonic waves, the portion of the ultrasonic waves propagating towards the inner side wall of the sewage tank will be absorbed by the ultrasonic absorption sheet 300, and the portion of the ultrasonic waves propagating towards the liquid surface in the sewage tank will be able to be applied to accurately measure the liquid level in the sewage tank. At the same time, since the ultrasonic absorption sheet 300 is horizontally spaced apart from the ultrasonic liquid level meter 200 by a distance of less than 20 cm, the ultrasonic liquid level meter 200 is closer to the first end of the overhanging support 100, i.e. the horizontal force arm of the overhanging support 100 is shortened, thereby reducing the compression of the overhanging support 100. In this way, not only the compression loss of the overhanging support 100 is reduced, but also the staff can more conveniently operate the ultrasonic liquid level sensor during maintenance.

[0036] Please refer to Figure 1 In some embodiments, the length of the overhanging support 100 is 20-30 cm. It can be understood that since the length of the overhanging support 100 is 20-30 cm, the ultrasonic liquid level meter 200 on the second end of the overhanging support 100 can be kept at a horizontal distance of less than 20 cm from the ultrasonic absorption sheet 300, so that the ultrasonic liquid level meter 200 is closer to the first end of the overhanging support 100, i.e. the horizontal force arm of the overhanging support 100 is shortened, thereby reducing the compression of the overhanging support 100. In this embodiment, the length of the overhanging support 100 can be 20 cm, 25 cm or 30 cm, etc. and the specific value is not limited herein, and other values can be selected by those skilled in the art as needed.

[0037] In one embodiment, the ultrasonic liquid level meter 200 can be a conventional digital liquid level meter controlled by a microprocessor, and thus is not described herein. It should be particularly noted that the method of using the ultrasonic liquid level meter 200 to measure the liquid level in the sewage tank belongs to the prior art and is not within the protection scope of the present disclosure.

[0038] In some embodiments, the ultrasonic absorption sheet 300 is a rubber sheet. It can be understood that since the ultrasonic absorption sheet 300 is a rubber sheet, the rubber sheet is flexible and durable, and has good sound absorption effect, i.e. the portion of the ultrasonic waves propagating towards the inner side wall of the sewage tank can be absorbed by the rubber sheet to reduce the rebound of the ultrasonic waves from the inner side wall of the sewage tank, thereby ultimately improving the measurement accuracy of the ultrasonic liquid level meter 200 on the liquid level in the sewage tank. Specifically, the rubber sheet can be adhered to the inner side wall of the sewage tank by glue.

[0039] In some embodiments, the ultrasonic wave absorbing sheet 300 is a sound-absorbing foam sheet. It can be understood that, since the ultrasonic wave absorbing sheet 300 is a sound-absorbing foam sheet, the sound-absorbing foam sheet has a good sound-absorbing effect, that is, part of the ultrasonic waves propagating towards the inner side wall of the sewage tank can be absorbed by the sound-absorbing foam sheet, so as to reduce the rebound of the ultrasonic waves on the inner side wall of the sewage tank, and finally improve the measurement accuracy of the ultrasonic liquid level meter 200 on the liquid level in the sewage tank. Specifically, the sound-absorbing foam sheet can be adhered to the inner side wall of the sewage tank by glue.

[0040] Referring to Figure 2 In some embodiments, the ultrasonic wave absorbing sheet 300 comprises a glue inner layer 310, a sound-absorbing foam layer 320 and a rubber protective surface layer 330 arranged in sequence, and the glue inner layer 310 is arranged to be attached to the inner side wall of the sewage tank. It can be understood that, by attaching the glue inner layer 310 to the inner side wall of the sewage tank, the ultrasonic wave absorbing sheet 300 can be adhered to the inner side wall of the sewage tank by the glue inner layer 310, at this time the rubber protective surface layer 330 faces outward and can resist rainwater, so as to improve the weather resistance of the ultrasonic wave absorbing sheet 300. At the same time, the sound-absorbing foam layer 320 and the rubber protective surface layer 330 form a composite sound-absorbing structure, which can further absorb part of the ultrasonic waves propagating towards the liquid surface in the sewage tank.

[0041] Referring to Figure 2 In some embodiments, the first end of the cantilever bracket 100 is locked and connected to the sewage tank by the screw 110. Specifically, the first end of the cantilever bracket 100 is locked and connected to the sewage tank by the screw 110, that is, the first end of the cantilever bracket 100 is threadedly connected to the sewage tank by the screw 110, so that the first end of the cantilever bracket 100 and the sewage tank are firmly fixed together. The glue inner layer 310, the sound-absorbing foam layer 320 and the rubber protective surface layer 330 are bonded together in sequence.

[0042] Referring to Figure 1 In some embodiments, the ultrasonic liquid level measurement mechanism for the sewage tank further comprises a digital display assembly electrically connected to the ultrasonic liquid level meter 200. It can be understood that, by electrically connecting the digital display assembly to the ultrasonic liquid level meter 200, the ultrasonic liquid level meter 200 can transmit the measured liquid level data to the digital display assembly, and then the staff can quickly know the liquid level height in the sewage tank measured by the ultrasonic liquid level meter 200 by checking the digital display assembly.

[0043] Referring to Figure 1In some embodiments, the digital display assembly comprises a support column 410, an instrument box 420 and a transmitter 430. The support column 410 is vertically arranged on the sewage tank. The instrument box 420 is installed on the top of the support column 410. The transmitter 430 is arranged in the instrument box 420 and is electrically connected to the ultrasonic liquid level meter 200 through a cable 440. It can be understood that, since the instrument box 420 is installed on the top of the support column 410 and the transmitter 430 is arranged in the instrument box 420, the transmitter 430 can be protected by the instrument box 420. By electrically connecting the transmitter 430 to the ultrasonic liquid level meter 200 through the cable 440, the liquid level height in the sewage tank measured by the ultrasonic liquid level meter 200 can be displayed by the transmitter 430.

[0044] In some embodiments, the cable 440 is sleeved with a protective tube. It can be understood that, by sleeving the cable 440 with the protective tube, the protective tube can protect the cable 440, reducing the damage of the cable 440.

[0045] In some embodiments, the cantilever support 100 is a channel steel support. It can be understood that, by arranging the cantilever support 100 as a channel steel support, the channel steel support has a compact structure and better load-bearing effect.

[0046] In some embodiments, the digital display assembly further comprises a grounding electrode 450 electrically connected to the transmitter 430. The grounding electrode 450 is arranged underground. It can be understood that, since the grounding electrode 450 is arranged underground, the electric charge on the transmitter 430 can be discharged to the ground through the grounding electrode 450 by electrically connecting the grounding electrode 450 to the transmitter 430, so that the digital display assembly can better adapt to rainy weather.

[0047] The present disclosure also provides a sewage treatment device comprising the ultrasonic liquid level measuring mechanism for sewage tank of any of the above embodiments. It can be understood that by applying the ultrasonic liquid level measuring mechanism for sewage tank of the present disclosure in the sewage treatment device, since the ultrasonic absorption sheet 300 is located between the overhanging support 100 and the liquid surface in the sewage tank, the ultrasonic emission end 210 of the ultrasonic level meter 200 is directed towards the liquid surface in the sewage tank, after the ultrasonic emission end 210 of the ultrasonic level meter 200 with a horizontal distance of 20 cm or less from the ultrasonic absorption sheet 300 emits ultrasonic waves, the part of the ultrasonic waves propagating towards the inner side wall of the sewage tank will be absorbed by the ultrasonic absorption sheet 300, and the part of the ultrasonic waves propagating towards the liquid surface in the sewage tank will be applied to accurately measure the liquid level height in the sewage tank. At the same time, since the horizontal distance between the ultrasonic absorption sheet 300 and the ultrasonic level meter 200 is 20 cm or less, the ultrasonic level meter 200 is closer to the first end of the overhanging support 100, i.e. the lateral force arm of the overhanging support 100 is shortened, thereby reducing the compression of the overhanging support 100, so not only the compression loss of the overhanging support 100 can be reduced, but also the staff can more conveniently operate the ultrasonic level sensor during maintenance.

[0048] Compared with the prior art, the present disclosure has at least the following advantages:

[0049] The ultrasonic liquid level measuring mechanism for sewage tank described above, after the ultrasonic absorption sheet 300 is installed on the inner side wall of the sewage tank, since the ultrasonic absorption sheet 300 is located between the overhanging support 100 and the liquid surface in the sewage tank, the ultrasonic emission end 210 of the ultrasonic level meter 200 is directed towards the liquid surface in the sewage tank, after the ultrasonic emission end 210 of the ultrasonic level meter 200 with a horizontal distance of 20 cm or less from the ultrasonic absorption sheet 300 emits ultrasonic waves, the part of the ultrasonic waves propagating towards the inner side wall of the sewage tank will be absorbed by the ultrasonic absorption sheet 300, and the part of the ultrasonic waves propagating towards the liquid surface in the sewage tank will be applied to accurately measure the liquid level height in the sewage tank. At the same time, since the horizontal distance between the ultrasonic absorption sheet 300 and the ultrasonic level meter 200 is 20 cm or less, the ultrasonic level meter 200 is closer to the first end of the overhanging support 100, i.e. the lateral force arm of the overhanging support 100 is shortened, thereby reducing the compression of the overhanging support 100, so not only the compression loss of the overhanging support 100 can be reduced, but also the staff can more conveniently operate the ultrasonic level sensor during maintenance.

[0050] The above-described embodiments only express several implementation manners of the present disclosure, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, which all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. An ultrasonic liquid level measuring device for a sewage tank, comprising: a cantilever support, the cantilever support being arranged to be transversely mounted on a sewage tank, a first end of the cantilever support being arranged to be fixedly connected to the sewage tank, and a second end of the cantilever support being arranged to be located above a liquid surface in the sewage tank; an ultrasonic liquid level meter, the ultrasonic liquid level meter being arranged to be mounted on the second end of the cantilever support, and an ultrasonic wave emitting end of the ultrasonic liquid level meter being arranged to be directed towards the liquid surface in the sewage tank; characterized in that the ultrasonic liquid level measuring device for the sewage tank further comprises an ultrasonic wave absorbing sheet; the ultrasonic wave absorbing sheet being arranged to be mounted on an inner side wall of the sewage tank and located between the cantilever support and the liquid surface in the sewage tank, a horizontal distance between the ultrasonic liquid level meter and the ultrasonic wave absorbing sheet being less than 20 cm, and the ultrasonic wave absorbing sheet being arranged to absorb ultrasonic waves emitted by the ultrasonic wave emitting end of the ultrasonic liquid level meter.

2. The ultrasonic liquid level measuring mechanism for a sewage tank according to claim 1, characterized by The length of the cantilever support is 20-30 cm.

3. The ultrasonic liquid level measuring device for sewage tanks according to claim 1, characterized in that The ultrasonic wave absorbing sheet is a rubber sheet or a sound-absorbing foam sheet.

4. The ultrasonic liquid level measurement mechanism for a sewage tank according to claim 1, characterized by The ultrasonic wave absorbing sheet comprises, in sequence, an adhesive inner layer, a sound-absorbing foam layer, and a rubber protective surface layer, and the adhesive inner layer is arranged to be attached to the inner side wall of the sewage tank.

5. The ultrasonic liquid level measurement mechanism for a sewage tank according to claim 1, characterized by The first end of the cantilever support is connected to the sewage tank by screw locking.

6. The ultrasonic liquid level measurement mechanism for a sewage tank according to claim 1, characterized by The ultrasonic liquid level measuring device for the sewage tank further comprises a digital display assembly, and the digital display assembly is electrically connected to the ultrasonic liquid level meter.

7. The ultrasonic liquid level measuring device for sewage tanks according to claim 6, characterized in that The digital display assembly comprises a support column, an instrument box, and a transmitter, the support column being arranged vertically on the sewage tank, the instrument box being mounted on the top of the support column, and the transmitter being arranged in the instrument box and electrically connected to the ultrasonic liquid level meter by a cable.

8. The ultrasonic liquid level measuring device for sewage tanks according to claim 7, characterized in that The cable is provided with a protective tube; and / or The cantilever support is a channel steel support.

9. The ultrasonic liquid level measuring device for sewage tanks according to claim 7, characterized in that The digital display assembly further comprises a grounding electrode, the grounding electrode being electrically connected to the transmitter, and the grounding electrode being arranged to be located underground.

10. A sewage treatment apparatus characterised in that, An ultrasonic liquid level measuring device for a sewage tank according to any one of claims 1-9.

Images