Sludge specific resistance measuring device

Abstract

The utility model discloses a sludge specific resistance measuring device which comprises a suction filtration mechanism and a vacuumizing mechanism, and the suction filtration mechanism is connected with the vacuumizing mechanism; the suction filtration mechanism comprises a suction filtration bottle, a funnel and a metering cylinder, the metering cylinder is arranged in the suction filtration bottle, the funnel is connected with the suction filtration bottle, and a liquid leakage pipe of the funnel extends into the metering cylinder. The vacuumizing mechanism extracts air of the suction filtration mechanism, so that negative pressure is formed in the funnel, liquid in the funnel is extracted and flows to the metering cylinder in the suction filtration bottle, and after liquid in sludge in the funnel enters the metering cylinder, the reading of the internal metering cylinder is read through the suction filtration bottle, so that the volume of the liquid of the current sludge is obtained; the problem that the rubber ring of the funnel is aged and worn due to excessive separation operation between the funnel and the suction flask is solved, and the air tightness of the device is not damaged. Besides, the liquid leakage pipe of the funnel is inserted into the metering cylinder, so that the liquid flows out of the funnel and directly enters the metering cylinder, the problem of sewage leakage can be avoided, and the accuracy of experimental data is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sludge dehydration, and in particular to a sludge specific resistance measuring device. Background Art

[0002] As my country's urbanization level continues to increase and people's living standards improve, sewage treatment systems are becoming more and more complete, and the output of sludge is also increasing. Sludge is the sediment obtained by sewage treatment plants when purifying sewage. It contains solid particles such as mud, fiber, animal and plant residues mixed in domestic sewage or industrial wastewater, and their condensed flocs. It is a complex of various colloids, organic matter, and adsorbed metal elements, microorganisms, pathogens, insect eggs and other substances. As the laws and regulations of various countries become increasingly stringent, and people's environmental awareness is increasingly enhanced, sludge treatment has become a key link in the water treatment process. In order to achieve sludge reduction, harmlessness, and resource-based treatment, it is necessary to carry out efficient mud-water separation of sludge. In the sludge treatment process, the dewatering performance of sludge is a crucial indicator. The sludge specific resistance is an important indicator for judging the dewatering performance of sludge. The accurate and rapid determination of the specific resistance has important application significance.

[0003] At present, most of the methods used by enterprises, universities and scientific research institutions to determine the specific resistance of sludge are vacuum filtration methods. That is, the sludge in the Büchner funnel is separated from the water by vacuuming, and the filtered sewage flows into the container below. The dehydrated sludge residue remains in the Büchner funnel, and the specific resistance of the sludge is calculated through various parameters in the experimental process.

[0004] However, during the test, each time the sewage volume is measured, the Büchner funnel needs to be taken out, the liquid needs to be poured into the measuring cylinder and then the reading is taken. This can easily cause the rubber ring of the Büchner funnel to age and wear, affecting the airtightness of the entire device. Utility Model Content

[0005] The technical problem to be solved by the present application is that during the test, each time the volume of sewage in the measuring cylinder is read, the Büchner funnel needs to be taken out, and then the measuring cylinder needs to be taken out for reading. This can easily cause aging and wear of the rubber ring of the Büchner funnel, affecting the airtightness of the entire device.

[0006] In order to solve the above technical problems, the present application provides a sludge specific resistance measuring device.

[0007] The utility model discloses a sludge specific resistance measuring device, which comprises a suction filtration mechanism and a vacuum pumping mechanism, wherein the suction filtration mechanism is connected to the vacuum pumping mechanism;

[0008] The suction filtration mechanism comprises a suction filtration bottle, a funnel and a measuring cylinder. The measuring cylinder is arranged inside the suction filtration bottle. The funnel is connected to the suction filtration bottle. The liquid leakage tube of the funnel penetrates into the measuring cylinder.

[0009] Preferably, the suction filtration mechanism comprises a stopper, the stopper is installed at the opening of the suction filtration bottle, the stopper is interference fit with the opening of the suction filtration bottle, and the liquid leakage port of the funnel passes through the stopper.

[0010] Preferably, the suction filtration bottle is provided with a first water outlet pipe, the metering cylinder is provided with a second water outlet pipe, and the first water outlet pipe is connected to the second water outlet pipe.

[0011] Preferably, the vacuum pumping mechanism comprises an extraction component and a safety component, the extraction component is connected to the safety component, and the safety component is connected to the suction filtration bottle.

[0012] Preferably, the safety component includes an overflow bucket, a first air extraction pipe and a pressure gauge, the overflow bucket is connected to the first air extraction pipe, the first air extraction pipe is connected to the suction bottle, and the pressure gauge is inserted into the overflow bucket.

[0013] Preferably, the suction filtration bottle is provided with a vent hole, and the vent hole is connected to the first suction pipeline;

[0014] The vent hole is arranged at a height higher than that of the first water outlet pipe.

[0015] Preferably, the extraction component comprises a vacuum pump and a second air extraction pipe, the vacuum pump is connected to the second air extraction pipe, and the second air extraction pipe is connected to the overflow bucket.

[0016] Preferably, the overflow bucket includes an air inlet and an air outlet, the first air extraction pipeline is connected to the air inlet, and the second air extraction pipeline is connected to the air outlet.

[0017] Preferably, the overflow bucket includes a check valve, and the check valve is installed on the air inlet and the air outlet respectively.

[0018] Preferably, it comprises a stage, and the filtration mechanism and the vacuum mechanism are installed on the stage.

[0019] The above technical solution provided by this application has the following advantages compared with the prior art:

[0020] The present application provides a sludge specific resistance measuring device, in which a vacuum mechanism extracts air from a filtration mechanism to form a negative pressure in the funnel, extracting liquid in the funnel, and the liquid flows to a measuring cylinder in a filtration bottle. When all the liquid in the sludge in the funnel enters the measuring cylinder, the reading of the internal measuring cylinder is read through the filtration bottle to obtain the current volume of the liquid in the sludge, thereby preventing the problem of aging and wear of the rubber ring of the funnel caused by excessive separation operations between the funnel and the filtration bottle, and ensuring that the airtightness of the device is not damaged.

[0021] In addition, the leakage tube of the funnel is inserted into the measuring cylinder, so that the liquid from the funnel directly enters the measuring cylinder, which can avoid the problem of sewage leakage and improve the accuracy of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 A structural module diagram of a sludge specific resistance measuring device provided in this application;

[0025] Figure 2 A schematic diagram of the structure of a sludge specific resistance measuring device provided in this application.

[0026] Description of reference numerals:

[0027] 1. Sludge specific resistance measuring device;

[0028] 11. Filtration mechanism;

[0029] 111, suction filter bottle; 1111, first water outlet pipe; 1112, vent hole;

[0030] 112. Funnel;

[0031] 113, metering cylinder; 1131, second water outlet pipe;

[0032] 114. Plug;

[0033] 12. Vacuum extraction mechanism;

[0034] 121. Security components;

[0035] 1211, overflow bucket; 1212, air inlet; 1213, air outlet; 1214, first air extraction pipeline; 1215, air pressure gauge; 1216, check valve;

[0036] 122. Extract components;

[0037] 1221, vacuum pump; 1222, second air extraction pipeline;

[0038] 13. Stage. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] See also Figure 1-2 The utility model discloses a sludge specific resistance measuring device 1, which includes a filtration mechanism 11, a vacuum mechanism 12 and a stage 13, wherein the filtration mechanism 11 is connected to the vacuum mechanism 12; the vacuum mechanism 12 is connected to the filtration mechanism 11, the vacuum mechanism 12 extracts the air in the filtration mechanism 11, so that the filtration mechanism 11 forms a negative pressure environment, thereby filtering the sludge to be filtered, calculating the volume of the obtained liquid within a limited time, and thus obtaining the sludge ratio; the filtration mechanism 11 and the vacuum mechanism 12 are arranged on the stage 13, and a universal wheel is arranged at the bottom of the stage 13, so that the operator can move the device to any position by pushing the stage 13, thereby increasing the portability and applicability of the device.

[0041] The vacuum pumping mechanism 12 includes an extraction component 122 and a safety component 121, wherein the extraction component 122 is connected to the safety component 121, and the safety component 121 is connected to the suction filtration bottle 111. Specifically, the extraction component 122 is used to extract air, and the safety component 121 is arranged between the extraction component 122 and the suction filtration mechanism 11, which can prevent the liquid in the suction filtration mechanism 11 from directly entering the extraction component 122, and can protect the extraction component 122.

[0042] The filtration mechanism 11 includes a filtration bottle 111 , a funnel 112 , and a metering cylinder 113 . The metering cylinder 113 is disposed inside the filtration bottle 111 . The funnel 112 is connected to the filtration bottle 111 , and a liquid leakage tube of the funnel 112 extends deep into the metering cylinder 113 .

[0043] Specifically, the height of the metering cylinder 113 allows the leakage tube at the tail of the funnel 112 to penetrate into the metering cylinder 113, so that the liquid from the funnel 112 directly enters the metering cylinder 113, thereby avoiding the problem of sewage leakage and improving the accuracy of experimental data.

[0044] The extraction component 122 extracts the air from the filtration mechanism 11 to form a negative pressure in the funnel 112, extracting the liquid in the funnel 112, and the liquid flows to the metering cylinder 113 in the filtration bottle 111. When the liquid in the sludge in the funnel 112 enters the metering cylinder 113, the reading of the internal metering cylinder 113 is read through the filtration bottle 111 to obtain the current volume of the liquid in the sludge, thereby preventing the problem of aging and wear of the rubber ring of the funnel 112 caused by excessive separation operations between the funnel 112 and the filtration bottle 111, and ensuring that the airtightness of the device is not destroyed.

[0045] Particularly, the funnel 112 is a Buchner funnel 112 .

[0046] The suction filtration mechanism 11 includes a stopper 114, which is installed at the opening of the suction filtration bottle 111. The stopper 114 is interference fit with the opening of the suction filtration bottle 111, and the liquid leakage port of the funnel 112 passes through the stopper 114. Specifically, the stopper 114 can seal the connection between the suction filtration bottle 111 and the funnel 112 to ensure the airtightness of the device.

[0047] The suction filtration bottle 111 is provided with a first water outlet pipe 1111, and the metering cylinder 113 is provided with a second water outlet pipe 1131, and the first water outlet pipe 1111 is connected to the second water outlet pipe 1131. Specifically, a switch is provided on the first water outlet pipe 1111 of the suction filtration bottle 111. When the test is performed, the switch of the first water outlet pipe 1111 is closed, and the funnel 112 filters the liquid and flows into the metering cylinder 113. When the test is completed, the first water outlet pipe 1111 is opened, and the liquid in the metering cylinder 113 flows out through the second water outlet pipe 1131 and the first water outlet pipe 1111.

[0048] The suction bottle 111 is provided with a vent hole 1112, and the safety component 121 is connected to the suction bottle 111 through the vent hole 1112, and the height of the vent hole 1112 is higher than the height of the first water outlet pipe 1111. Specifically, the suction bottle 111 is connected to the vacuum mechanism 12 through the vent hole 1112, and the vacuum mechanism 12 extracts the air in the suction bottle 111 through the vent hole 1112, so that the inside of the suction bottle 111 is in a negative pressure environment, so that the liquid in the sludge to be filtered loaded in the funnel 112 is extracted from the sludge to be filtered, and the vent hole 1112 is set higher than the first water outlet pipe 1111, which can prevent the liquid from flowing out of the vent hole 1112.

[0049] The extraction component 122 includes a vacuum pump 1221 and a second air extraction pipeline 1222, wherein the vacuum pump 1221 is connected to the second air extraction pipeline 1222, and the second air extraction pipeline 1222 is connected to the safety component 121. Specifically, the vacuum pump 1221 is used to provide power for extracting air, and the second air extraction pipeline 1222 connects the vacuum pump 1221 with the safety component 121. The vacuum pump 1221 extracts air in the safety component 121 through the second air extraction pipeline 1222, so that a negative pressure environment is formed in the safety component 121, and then a negative pressure is formed inside the suction filtration bottle 111, so that the liquid in the funnel 112 is easily extracted.

[0050] The safety component 121 includes an overflow bucket 1211, a first air extraction pipe 1214 and a pressure gauge 1215. The overflow bucket 1211 is connected to the first air extraction pipe 1214, the first air extraction pipe 1214 is connected to the air vent 1112 of the suction bottle 111, and the pressure gauge 1215 is inserted into the overflow bucket 1211.

[0051] Specifically, the overflow bucket 1211 needs to be kept sealed during testing; when performing vacuum filtration, the overflow bucket 1211 is loaded with liquid, and the gas in the first vacuum pipe 1214 is input into the liquid inside the overflow bucket 1211. The pressure gauge 1215 is used to display the current air pressure inside the overflow bucket 1211.

[0052] The overflow bucket 1211 includes a check valve 1216, a pressure relief valve, a liquid outlet pipe, an air inlet 1212 and an air outlet 1213. The first air suction pipe 1214 is connected to the air inlet 1212, the second air suction pipe 1222 is connected to the air outlet 1213, the pressure relief valve is connected to the liquid outlet pipe, and the check valve 1216 is respectively installed on the air inlet 1212 and the air outlet 1213.

[0053] Specifically, the air inlet 1212 of the overflow bucket 1211 is connected to the first air extraction pipeline 1214, and the air outlet 1213 is connected to the second air extraction pipeline 1222, so that the space between the overflow bucket 1211 and the suction bottle 111 is connected, and the vacuum pump 1221 extracts the air of the overflow bucket 1211 through the second air extraction pipeline 1222, so that the air of the suction bottle 111 is sucked into the overflow bucket 1211, and a negative pressure is formed in the suction bottle 111, so that the liquid contained in the sludge to be filtered loaded on the funnel 112 is extracted. A check valve 1216 is set at the air inlet 1212 and the air outlet 1213 to avoid the backflow of the liquid in the first air extraction pipeline 1214 and the second air extraction pipeline 1222, and prevent the liquid from entering the vacuum pump 1221. The liquid outlet pipe is set at the bottom of the overflow bucket 1211, and when the overflow bucket 1211 needs to be cleaned, the liquid flows out from the liquid outlet pipe. A pressure relief valve is provided on the liquid outlet pipe. During the test, when the pressure exceeds the preset value, the pressure relief valve can be automatically activated to serve as a protective device.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0060] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0061] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sludge specific resistance measuring device, characterized in that: It includes a filtration mechanism and a vacuum mechanism, wherein the filtration mechanism is connected to the vacuum mechanism; The suction filtration mechanism comprises a suction filtration bottle, a funnel and a measuring cylinder. The measuring cylinder is arranged inside the suction filtration bottle. The funnel is connected to the suction filtration bottle. The liquid leakage tube of the funnel penetrates into the measuring cylinder.

2. The sludge specific resistance measuring device according to claim 1, characterized in that: The suction filtration mechanism comprises a plug, which is installed at the opening of the suction filtration bottle. The plug is interference fit with the opening of the suction filtration bottle, and the liquid leakage port of the funnel passes through the plug.

3. The sludge specific resistance measuring device according to claim 1, characterized in that: The suction filtration bottle is provided with a first water outlet pipe, the metering cylinder is provided with a second water outlet pipe, and the first water outlet pipe is connected to the second water outlet pipe.

4. The sludge specific resistance measuring device according to claim 1, characterized in that: The vacuum pumping mechanism comprises an extraction component and a safety component, wherein the extraction component is connected to the safety component, and the safety component is connected to the suction filtration bottle.

5. The sludge specific resistance measuring device according to claim 4, characterized in that: The safety component includes an overflow bucket, a first air extraction pipeline and a pressure gauge, the overflow bucket is connected to the first air extraction pipeline, the first air extraction pipeline is connected to the filter bottle, and the pressure gauge is inserted into the overflow bucket.

6. The sludge specific resistance measuring device according to claim 5, characterized in that: The suction filter bottle is provided with a vent hole, and the vent hole is connected to the first suction pipeline; The vent hole is arranged at a height higher than that of the first water outlet pipe.

7. The sludge specific resistance measuring device according to claim 6, characterized in that: The extraction component includes a vacuum pump and a second air extraction pipeline, the vacuum pump is connected to the second air extraction pipeline, and the second air extraction pipeline is connected to the overflow bucket.

8. The sludge specific resistance measuring device according to claim 7, characterized in that: The overflow bucket includes an air inlet and an air outlet, the first air extraction pipeline is connected to the air inlet, and the second air extraction pipeline is connected to the air outlet.

9. The sludge specific resistance measuring device according to claim 8, characterized in that: The overflow bucket includes a check valve, and the check valve is respectively installed on the air inlet and the air outlet.

10. The sludge specific resistance measuring device according to claim 1, characterized in that: It comprises a loading platform, and the filtration mechanism and the vacuum mechanism are installed on the loading platform.

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