Improved sludge specific resistance measuring device

Abstract

The utility model discloses an improved sludge specific resistance measuring device, which belongs to the technical field of sludge treatment and comprises a suction filtration measuring cylinder, and a Buchner funnel is arranged at an opening of the suction filtration measuring cylinder; a first sealing piece is arranged at the joint of the Buchner funnel and the suction filtration measuring cylinder; the liquid discharge cylinder is communicated with the suction filtration measuring cylinder through a communication pipeline; the communicating pipeline is provided with a valve; the suction filtration cylinder is communicated with the top of the suction filtration measuring cylinder through a second vacuum pipe; the output end of the vacuum pump is communicated with the suction filtration cylinder through a first vacuum pipe. According to the device disclosed by the utility model, the liquid discharge cylinder is arranged, so that treated liquid can be discharged into the liquid discharge cylinder, and the next step of operation can be carried out, such as measurement of other elements such as pH value and the like or discharge treatment is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and in particular relates to an improved sludge specific resistance measuring device. Background Art

[0002] With the rapid development of urbanization, the output of municipal sewage has also increased year by year. Due to the phenomenon of "heavy water and light mud" in the early sewage treatment industry in my country, the treatment and disposal of sludge has not been taken seriously for a long time. Improperly treated sludge will bring secondary pollution to the living environment and pose a huge threat to human health. In recent years, it has gradually evolved into a problem that cannot be ignored. At the end of 2018, the annual output of sludge in cities above the county level in my country has reached 67.65 million tons (water content is 80%), and it has been growing at a rate of 5%-8% per year. It is estimated that the annual output of sludge will exceed 90 million tons by 2025. The relevant departments have proposed new policies to pay attention to and strengthen sludge treatment and disposal, vigorously promote the resource utilization, reduction, harmlessness and stabilization of sludge, and form a new model for the construction of urban sewage treatment facilities with the goal of "improving quality and increasing efficiency", the principle of "giving equal importance to sludge and water", and the concept of "recycling and utilization". In the process of efficient sludge treatment and disposal, the research on sludge conditioning technology and dewatering performance is of vital importance. Sludge specific resistance is one of the most commonly used indicators for judging sludge conditioning performance, and improving its measurement efficiency and accuracy has far-reaching significance.

[0003] At present, the sludge specific resistance measuring device commonly used by us mainly includes a vacuum pump, a Buchner funnel, a suction filtration bottle, etc., which mainly filters the water-containing sludge through a vacuum pump and a Buchner funnel, so that the filtered sewage enters the suction filtration measuring cylinder below, and the dehydrated sludge remains on the filter paper of the Buchner funnel. The sludge specific resistance is calculated by determining various parameters in the experiment. However, since the pipe of the existing Buchner funnel is relatively short and is only inserted into the upper area of ​​the suction filtration measuring cylinder, the liquid level drops a long distance during the suction filtration process, which easily causes liquid level fluctuations, resulting in a large reading error and affecting the measurement results; at the same time, after each suction filtration experiment is completed, the filtrate in the suction filtration measuring cylinder needs to be discharged for the next experiment, and since the existing suction filtration measuring cylinder has only an opening at the upper end, it is necessary to pull out the rubber tube connected to the suction filtration port back and forth or take down the Buchner funnel back and forth for drainage, which leads to reduced air tightness of the equipment and inconvenient operation. Utility Model Content

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] An improved sludge specific resistance measuring device, comprising:

[0006] A suction filtration measuring cylinder, wherein a Buchner funnel is arranged at the opening of the suction filtration measuring cylinder; a first sealing member is arranged at the connection between the Buchner funnel and the suction filtration measuring cylinder;

[0007] A liquid discharge cylinder, the liquid discharge cylinder is connected to the suction filtration measuring cylinder through a connecting pipe; the connecting pipe is provided with a valve;

[0008] A suction filter cylinder, the suction filter cylinder is connected to the top of the suction filter measuring cylinder through a second vacuum tube;

[0009] A vacuum pump, wherein the output end of the vacuum pump is connected to the suction filter cartridge through a first vacuum pipe.

[0010] Furthermore, a scale is provided on the side wall of the suction filtration measuring cylinder.

[0011] Furthermore, the liquid discharge cylinder is located at the lower end of the suction filtration measuring cylinder and is connected to the suction filtration measuring cylinder through the connecting pipe.

[0012] Furthermore, the liquid discharge cylinder is detachably connected to the communicating pipe.

[0013] Furthermore, it also includes a conical base, which is arranged at the lower end of the liquid discharge cylinder.

[0014] Furthermore, the tip of the Buchner funnel is connected to an extension tube, and the other end of the extension tube points to the side wall of the suction filtration measuring cylinder.

[0015] Furthermore, the extension tube is divided into a vertical portion and a curved portion; the vertical portion is connected to the tip of the Buchner funnel; the curved portion is bent downward, wherein the liquid outlet direction of the curved portion points to the side wall of the suction filtration measuring cylinder.

[0016] Furthermore, the vertical portion of the extension pipe is provided with a plurality of exhaust holes.

[0017] Beneficial effects of the utility model:

[0018] (1) The present application provides a drain port between the extension tube and the side wall of the suction filtration cylinder, so that the liquid after filtration can flow smoothly to the bottom of the suction filtration cylinder, so that the liquid level does not fluctuate when reading, and the reading is more accurate; this is a critical data when measuring the sludge specific resistance, which ensures the accuracy of the experiment.

[0019] (2) The present application is provided with a liquid discharge cylinder, into which the treated liquid can be discharged, making it more convenient to carry out the next step, such as measuring its pH value and other factors or performing discharge treatment.

[0020] (3) The present application is provided with a detachable liquid discharge cylinder, which can discharge the filtrate without repeatedly opening the device back and forth, thereby ensuring the overall air tightness of the device. The entire device has a simple structure and is easy to manufacture. It also occupies a small area and saves space.

[0021] (4) The bottom of the present application is provided with a conical base to ensure the stability and safety of the entire device.

[0022] (5) The present invention can also be simply used as a filtration device, which is a truly multi-purpose integrated device, saving some space and costs for the laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a sludge specific resistance measuring device using the utility model;

[0024] Figure 2 It is a structural schematic diagram of the suction filtration measuring cylinder and the liquid discharge cylinder of the utility model;

[0025] In the figure: 1, Buchner funnel, 2, first rubber stopper, 3, suction measuring cylinder, 4, filtrate, 5, extension tube, 6, scale, 7, suction liquid level, 8, connecting pipe, 9, valve, 10, drainage cylinder, 11, conical base, 12, second vacuum tube, 13, suction filter cylinder, 14, vacuum pump, 15, second rubber stopper, 16, exhaust hole, 17, bending part, 18, third interface, 19, second interface, 20, first interface, 21, first vacuum tube. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Example 1

[0028] refer to Figure 1 to Figure 2 , an improved sludge specific resistance measuring device, comprising:

[0029] A suction filtration measuring cylinder 3, wherein a Buchner funnel 1 is arranged at the opening of the suction filtration measuring cylinder 3; a first sealing member is arranged at the connection between the Buchner funnel 1 and the suction filtration measuring cylinder 3; a third interface 18 is arranged on the top side wall of the suction filtration measuring cylinder 3;

[0030] A liquid discharge cylinder 10, which is connected to the suction filtration measuring cylinder 3 via a connecting pipe 8; the connecting pipe 8 is provided with a valve 9;

[0031] The suction filter cartridge 13 is connected to the top of the suction filter measuring cylinder 3 through the second vacuum tube 12; the suction filter cartridge 13 is provided with a first interface 20 and a second interface 19, and the second interface 19 is connected to the third interface 18 through the second vacuum tube 12;

[0032] The vacuum pump 14 , the output end of the vacuum pump 14 is connected to the suction filter cartridge 13 through the first vacuum tube 21 ; the vacuum pump 14 , the output end of the vacuum pump 14 is connected to the first interface 20 through the first vacuum tube 21 .

[0033] In this embodiment, the first sealing member is a first rubber stopper 2, which is used to ensure the sealing effect at the connection between the Buchner funnel 1 and the suction filtration measuring cylinder 3.

[0034] Preferably, a scale 6 is provided on the side wall of the suction filtration measuring cylinder 3 .

[0035] Example 2

[0036] In order to facilitate the discharge of the treated liquid into the liquid discharge barrel and avoid opening the device repeatedly to discharge the filtrate, this embodiment is a detailed arrangement based on the embodiment 1.

[0037] The liquid discharge cylinder 10 is located at the lower end of the suction filtration measuring cylinder 3 and is connected to the suction filtration measuring cylinder 3 through a connecting pipe 8 .

[0038] Preferably, the liquid discharge cylinder 10 is detachably connected to the connecting pipe 8 .

[0039] In this embodiment, the drain cylinder 10 is connected to the connecting pipe 8 by plugging, snapping or threading. Preferably, the drain cylinder 10 is connected to the connecting pipe 8 by threading.

[0040] Example 3

[0041] In order to ensure the stability and safety of the entire device and prevent the device from being top-heavy, causing instability and damage to the device, this embodiment is a detailed setting based on Embodiment 2.

[0042] The drain cylinder 10 further comprises a conical base 11 , which is disposed at the lower end of the drain cylinder 10 .

[0043] Example 4

[0044] In order to make the filtered liquid flow smoothly to the bottom of the suction filtration cylinder, so that the liquid level does not fluctuate when reading, and the reading is more accurate, this embodiment is a detailed setting based on Example 3.

[0045] The tip of the Buchner funnel 1 is connected to an extension tube 5 , and the other end of the extension tube 5 points to the side wall of the suction filtration measuring cylinder 3 .

[0046] In this embodiment, the gap between the extension tube 5 and the suction filtration measuring cylinder 3 is determined according to the flow rate of the filtrate 4 .

[0047] Preferably, the tip diameter of the Buchner funnel 1 is smaller than the diameter of the extension tube 5 ; a second sealing member is provided at the connection between the Buchner funnel 1 and the extension tube 5 .

[0048] In this embodiment, the second sealing member is a second rubber stopper 15 .

[0049] Preferably, the extension tube 5 is divided into a vertical portion and a curved portion 17; the vertical portion is connected to the tip of the Buchner funnel 1; the curved portion 17 is bent downward, wherein the liquid outlet direction of the curved portion 17 points to the side wall of the suction filtration cylinder 3.

[0050] Preferably, a plurality of exhaust holes 16 are provided on the vertical portion of the extension tube 5 to ensure that the pressure in the extension tube 5 is consistent with that in the suction filtration cylinder 3 .

[0051] In this embodiment, 4 to 6 exhaust holes 16 are provided and are evenly distributed at the vertical portion of the extension pipe.

[0052] Working principle:

[0053] The vacuum pump 14 in the device is a common vacuum filtration pump in the laboratory. The first vacuum tube 21 and the second vacuum tube 12 are rubber tubes with good air tightness. When using the device to measure the sludge specific resistance, it is necessary to first test the air tightness. The detection device is leak-proof. After the air tightness is good, the sludge specific resistance can be measured. Before starting the vacuum pump 14, spread the wet filter paper on the Buchner funnel 1, then pour the sludge to be measured, first close the valve 9, then open the vacuum pump 14, and adjust Pressure, since the extension tube is provided with an exhaust port 16, the pressure in the extension tube and the suction filtration measuring cylinder 3 is guaranteed to be consistent; at this time, the filtrate 4 will drip into the extension tube 5 below, and since a drainage port is provided between the extension tube 5 and the suction filtration measuring cylinder 3, it is guaranteed that the filtrate can flow out of the extension tube 5 along the side wall of the suction filtration measuring cylinder 3 and flow into the suction filtration liquid surface 7; when the measurement is completed, when the filtrate needs to be discharged, the valve 9 below the suction filtration measuring cylinder 3 can be opened to discharge the filtrate into the drainage cylinder 10 below, and then the next operation or discharge is carried out.

[0054] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. An improved sludge specific resistance measuring device, characterized in that: include: A suction filtration measuring cylinder, wherein a Buchner funnel is arranged at the opening of the suction filtration measuring cylinder; a first sealing member is arranged at the connection between the Buchner funnel and the suction filtration measuring cylinder; A liquid discharge cylinder, the liquid discharge cylinder is connected to the suction filtration measuring cylinder through a connecting pipe; the connecting pipe is provided with a valve; A suction filter cylinder, the suction filter cylinder is connected to the top of the suction filter measuring cylinder through a second vacuum tube; A vacuum pump, wherein the output end of the vacuum pump is connected to the suction filter cartridge through a first vacuum pipe.

2. An improved sludge specific resistance measuring device according to claim 1, characterized in that: The side wall of the suction filtration measuring cylinder is provided with a scale.

3. An improved sludge specific resistance measuring device according to claim 1, characterized in that: The liquid discharge cylinder is located at the lower end of the suction filtration measuring cylinder and is communicated with the suction filtration measuring cylinder through the communicating pipe.

4. An improved sludge specific resistance measuring device according to claim 3, characterized in that: The liquid discharge cylinder is detachably connected to the communicating pipe.

5. The improved sludge specific resistance measuring device according to claim 3, characterized in that: It also includes a conical base, which is arranged at the lower end of the liquid discharge cylinder.

6. The improved sludge specific resistance measuring device according to claim 1, characterized in that: The tip of the Buchner funnel is connected with an extension tube, and the other end of the extension tube points to the side wall of the suction filtration measuring cylinder.

7. An improved sludge specific resistance measuring device according to claim 6, characterized in that: The tip diameter of the Buchner funnel is smaller than the diameter of the extension tube; a second sealing member is provided at the connection between the Buchner funnel and the extension tube.

8. The improved sludge specific resistance measuring device according to claim 6, characterized in that: The extension tube is divided into a vertical portion and a curved portion; the vertical portion is connected to the tip of the Buchner funnel; the curved portion is bent downward, wherein the liquid outlet direction of the curved portion points to the side wall of the suction filtration measuring cylinder.

9. An improved sludge specific resistance measuring device according to claim 8, characterized in that: The vertical portion of the extension pipe is provided with a plurality of exhaust holes.

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