Slurry washing effect detection device and washing system

Abstract

The utility model discloses a slurry washing effect detection device and a washing system. The slurry washing effect detection device comprises a detection assembly which comprises a detection barrel and a light detection element, and the light detection element is connected with the side wall of the detection barrel; the wastewater supply assembly comprises a first pipeline and a first valve, the first valve is arranged on the first pipeline, and the outlet end of the first pipeline is connected with the detection barrel; the wastewater discharge assembly comprises a second pipeline and a second valve, the second valve is arranged on the second pipeline, and the inlet end of the second pipeline is connected with the detection barrel; the reagent supply assembly comprises a reagent barrel, a third pipeline and a third valve, the third valve is arranged on the third pipeline, the inlet end of the third pipeline is connected with the reagent barrel, and the outlet end of the third pipeline is connected with the detection barrel. The washing system comprises a washing and filtering assembly and a slurry washing effect detection device. The device can be used for directly detecting the waste water flowing out after the slurry is washed and filtered, so that the detection procedure of the slurry washing effect is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry washing equipment, in particular to a slurry washing effect detection device and a washing system. Background Art

[0002] In wet smelting, the washing process of slurry is indispensable. In the current production process of battery-grade materials, the content of various ionic impurities (such as chlorine Cl, sulfur S, calcium Ca, sodium Na, magnesium Mg, etc.) exceeds the standard and fails to meet the required product quality standards. Filtration and washing are used to reduce the impurity content so that the product quality meets the standard. For example, the main impurities of products such as cobalt carbonate and lithium carbonate are removed by filtration and washing. Usually, companies will choose to use filter presses to filter, wash, press and blow the slurry, and finally obtain filter cake-like materials.

[0003] The filter presses currently on the market have the following problems: 1. After the filter press is washed within the specified time, in order to detect whether the chloride ion content of the washed cobalt carbonate slurry is qualified, it is necessary to loosen the already compressed filter plate and take out a piece of filter cake material between the filter plates for testing. This process is cumbersome and affects work efficiency. 2. If the chloride ion content is found to be unqualified after sampling and testing, the filter plate needs to be re-pressed and washed again, which increases working time. 3. The inspection time is long and the accumulated cost is high. 4. The washing effect cannot be understood during the washing process, and a large amount of washing water is wasted. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a slurry washing effect detection device and a washing system.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A slurry washing effect detection device, comprising:

[0007] A detection assembly, comprising a detection barrel and a light detection element, wherein the light detection element is connected to a side wall of the detection barrel and is used to obtain the light shielding degree of the solution in the detection barrel;

[0008] A wastewater supply assembly, used to provide wastewater to the detection barrel, the wastewater supply assembly comprising a first pipeline and a first valve, the first valve is arranged on the first pipeline, and an outlet end of the first pipeline is connected to the detection barrel;

[0009] A wastewater discharge assembly, used to discharge wastewater from the detection barrel, the wastewater discharge assembly comprising a second pipeline and a second valve, the second valve being arranged on the second pipeline, and an inlet end of the second pipeline being connected to the detection barrel;

[0010] The reagent supply assembly comprises a reagent barrel, a third pipeline and a third valve, wherein the third valve is arranged on the third pipeline, the inlet end of the third pipeline is connected to the reagent barrel, and the outlet end of the third pipeline is connected to the detection barrel.

[0011] The utility model has at least the following beneficial effects: the first pipeline can be directly connected to the outlet of the filter washing assembly for washing slurry, the wastewater discharged after slurry washing enters the detection barrel through the first pipeline, the reagent enters the detection barrel through the third pipeline, the reagent and the ions to be tested in the wastewater are mixed and reacted in the detection barrel, so that the light shielding degree of the liquid in the detection barrel changes, the light shielding degree in the detection barrel is detected by the light detection component, and the solution light shielding degree of the solution in the detection barrel is obtained. The operator can judge the content of the ions to be tested in the wastewater according to the obtained solution light shielding degree, and judge the slurry Whether the washing is qualified, the waste water after the test is discharged through the second pipeline; in the whole testing process, the washing effect can be tested by testing the waste water after slurry washing and filtration, and the operator does not need to take out the filter cake after washing and filtration from the filter washing component for inspection, which simplifies the washing effect testing procedure and improves the work efficiency. Moreover, since the waste water can be tested quickly, the operator can also understand the washing effect in time during the washing process. When the washing is qualified, the slurry washing can be stopped in time to reduce the waste of washing water and the filter washing cost.

[0012] As a further improvement of the above technical solution, the detection barrel is made of a transparent material, the light detection element is connected to the outer wall of the detection barrel, and the detection end of the light detection element is arranged toward the inside of the detection barrel. In this way, the light detection element can detect the light shielding degree of the solution inside the detection barrel from the outside of the detection barrel without placing the light detection element inside the detection barrel, thereby avoiding damage to the light detection element by the solution in the detection barrel and improving the accuracy and service life of the light detection element.

[0013] As a further improvement of the above technical solution, the detection assembly further includes a stirring component, the stirring end of which extends into the interior of the detection barrel. The stirring component can stir the liquid in the detection barrel to make the wastewater and the reagent mix more evenly, accelerate the reaction rate, and improve the detection efficiency.

[0014] As a further improvement of the above technical solution, the slurry washing effect detection device further includes an electric control box, and the electric control box is electrically connected to the first valve, the second valve, the third valve, and the light detection element respectively. Due to the provision of the electric control box, the first valve, the second valve, the third valve, and the light detection element can be automatically controlled, further reducing the labor intensity of the operator, and achieving higher efficiency and more timely control.

[0015] As a further improvement of the above technical solution, the detection component also includes a first flow meter, which is arranged on the first pipeline and located between the first valve and the detection barrel. The first flow meter is electrically connected to the electric control box, and the first flow meter is configured to obtain wastewater flow information and send it to the electric control box, so that the electric control box controls the opening or closing of the first valve according to the wastewater flow. After the first flow meter obtains the wastewater flow information entering the detection barrel, it transmits the wastewater flow information to the electric control box, and the electric control box automatically controls the opening or closing of the first valve according to the obtained wastewater flow information, thereby accurately limiting the amount of wastewater entering the detection barrel, and avoiding the detection result being affected by too much or too little wastewater in the detection barrel.

[0016] As a further improvement of the above technical solution, the reagent supply assembly also includes a second flow meter, which is arranged on the third pipeline and located between the third valve and the detection barrel. The second flow meter is electrically connected to the electric control box, and the second flow meter is configured to obtain the reagent flow information and send it to the electric control box, so that the electric control box controls the opening or closing of the third valve according to the reagent flow. After the second flow meter obtains the reagent flow information entering the detection barrel, it transmits the reagent flow information to the electric control box, and the electric control box automatically controls the opening or closing of the third valve according to the obtained reagent flow information, thereby accurately limiting the amount of reagent entering the detection barrel, avoiding affecting the test results due to too little reagent in the detection barrel or wasting due to too much reagent.

[0017] As a further improvement of the above technical solution, the slurry washing effect detection device also includes a display component, the display component is electrically connected to the electric control box, and the display component is used to display the solution shading degree. Due to the provision of the display component, the operator can intuitively learn the solution shading degree of the suspension after the reaction, thereby judging whether the washing is qualified.

[0018] A washing system comprises a filter washing assembly and a slurry washing effect detection device as described in any one of the above technical solutions, wherein the inlet end of the first pipeline of the slurry washing effect detection device is connected to the outlet end of the filter washing assembly. The slurry washing effect detection device can directly detect the wastewater flowing out after the slurry filter washing without taking out the filter cake formed after the filter washing, and the detection process is simpler and more efficient.

[0019] As a further improvement of the above technical solution, the washing system further includes a water outlet pipe, the inlet end of the water outlet pipe is connected to the outlet end of the filter wash assembly, the outlet end of the second pipeline of the slurry washing effect detection device and the inlet end of the first pipeline are respectively connected to the water outlet pipe, and the outlet end of the second pipeline is located between the inlet end of the first pipeline and the outlet end of the water outlet pipe. With such an arrangement, the layout is more reasonable, and only one water outlet pipe is required to realize the wastewater discharge of the filter wash assembly, the wastewater supply of the slurry washing effect detection device, and the wastewater discharge of the slurry washing effect detection device, thereby reducing the number of pipelines in the washing system.

[0020] As a further improvement of the above technical solution, the filter washing assembly includes a washing water tank, a fourth pipeline and a filter press component, the inlet end of the first pipeline is connected to the outlet end of the filter press component, the inlet end of the fourth pipeline is connected to the washing water tank, the outlet end of the fourth pipeline is connected to the inlet end of the filter press component, a discharge pump is provided on the fourth pipeline, and the slurry washing effect detection device is provided with an electric control box, and the discharge pump and the light detection element are electrically connected to the electric control box respectively. The electric control box controls the start or stop of the discharge pump according to the detection result of the light detection element, thereby automatically controlling the slurry to continue washing or stop washing, reducing the waste of washing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a slurry washing effect detection device according to an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a pulp washing effect detection device according to another embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a washing system according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a filter washing assembly according to an embodiment of the utility model.

[0026] Figure numerals: 100, detection component; 110, detection barrel; 120, light detection element; 130, stirring component; 200, wastewater supply component; 210, first pipeline; 220, first valve; 230, first flow meter; 300, wastewater discharge component; 310, second pipeline; 320, second valve; 400, reagent supply component; 410, third pipeline; 420, third valve; 430, reagent barrel; 440, second flow meter; 500, electrical control box; 600, filter washing component; 610, water outlet pipe; 611, terminal wastewater tank; 620, washing water tank; 630, washing filter press; 631, low-salt wastewater tank; 632, high-salt wastewater tank; 640, fourth pipeline; 641, discharge pump; 650, low-salt wastewater filter press; 660, water receiving tank; 670, safety filter. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to 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.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0032] First, refer to Figure 1 and Figure 2 The embodiment of the utility model provides a slurry washing effect detection device, including a detection component 100, a wastewater supply component 200, a wastewater discharge component 300 and a reagent supply component 400. Among them, the detection component 100 is used to detect the content of a certain ion in the wastewater discharged after the slurry is washed, the wastewater supply component 200 is used to provide wastewater for the detection component 100, the wastewater discharge component 300 is used to discharge the wastewater detected in the detection component 100, and the reagent supply component 400 is used to provide the detection component 100 with a detection reagent.

[0033] Specifically, the slurry washing effect detection device of this embodiment is used to detect the chloride ion content in wastewater. The reagent used is 5% silver nitrate solution. The silver nitrate solution can react chemically with chloride ions and produce silver chloride precipitate. The silver chloride precipitate is solid particles, which can increase the light-shielding degree of the wastewater.

[0034] In this embodiment, the wastewater supply assembly 200 includes a first pipeline 210 and a first valve 220, the first valve 220 is arranged on the first pipeline 210, and is used to control the opening and closing of the first pipeline 210; the wastewater discharge assembly 300 includes a second pipeline 310 and a second valve 320, the second valve 320 is arranged on the second pipeline 310, and is used to control the opening and closing of the second pipeline 310; the reagent supply assembly 400 includes a third pipeline 410 and a third valve 420, the third valve 420 is arranged on the third pipeline 410, and is used to control the opening and closing of the third pipeline 410. The reagent supply assembly 400 also includes a reagent barrel 430, the reagent barrel 430 is used to store the silver nitrate solution, and the inlet end of the third pipeline 410 is connected to the reagent barrel 430.

[0035] The detection assembly 100 includes a detection barrel 110 and a light detection element 120. The light detection element 120 is installed on the side wall of the detection, and its detection end is arranged toward the inside of the detection barrel 110. The light detection element 120 is used to obtain the light shielding degree of the solution in the detection barrel 110. The outlet end of the first pipeline 210, the inlet end of the second pipeline 310, and the outlet end of the third pipeline 410 are respectively connected to the detection barrel 110.

[0036] The wastewater after slurry washing enters the detection barrel 110 through the first pipeline 210, and the silver nitrate solution enters the detection barrel 110 through the third pipeline 410. After the wastewater and the reagent are mixed in the detection barrel 110, the light shielding degree of the mixed wastewater is detected by the light detection element 120 to obtain the light shielding degree of the solution in the detection barrel 110. The wastewater after the detection is discharged through the second pipeline 310.

[0037] It can be understood that the solution shading degree obtained by the light detection element 120 is compared with the pre-set standard shading degree: when the solution shading degree in the detection barrel 110 is lower than the standard shading degree, it indicates that the slurry washing is qualified and subsequent processes such as unloading can be carried out; when the solution shading degree in the detection barrel 110 is higher than the standard shading degree, it indicates that the slurry washing is unqualified and the slurry needs to be continued to be washed until the next test is qualified.

[0038] It can be understood that, in this embodiment, the first pipeline 210 can be directly connected to the outlet of the filter washing assembly 600 for washing the slurry. The slurry washing effect detection device can detect the wastewater after the slurry is washed and filtered, so that the washing effect can be detected. There is no need to take out the filter cake after washing and filtering from the filter washing assembly 600 for inspection, which simplifies the washing effect detection procedure, improves work efficiency, and can also reduce the filter washing cost.

[0039] It is understandable that the slurry washing effect detection device of this embodiment can also be used to detect the content of other ions by using reagents that produce precipitation reactions with the desired detection ions.

[0040] In some embodiments, the detection barrel 110 is made of a transparent material, the light detection element 120 is connected to the outer wall of the detection barrel 110, and the detection end of the light detection element 120 is arranged toward the inside of the detection barrel 110. It can be understood that, in this arrangement, the light detection element 120 can detect the light shielding degree of the solution inside the detection barrel 110 from the outside of the detection barrel 110 without placing the light detection element 120 inside the detection barrel 110, thereby avoiding damage to the light detection element 120 by the solution in the detection barrel 110, and improving the accuracy and service life of the light detection element 120.

[0041] In addition, since the detection barrel 110 is transparent, the operator can observe the internal conditions of the detection barrel 110 with the naked eye from the outside of the detection barrel 110, such as abnormal supply of the reagent supply assembly 400, and take corresponding treatment measures in a timely manner to ensure the accuracy of the detection.

[0042] It is understandable that the detection barrel 110 may be made of transparent materials such as glass material, transparent plastic material, etc.

[0043] In some embodiments, the detection assembly 100 further includes a stirring member 130, the stirring end of which extends into the interior of the detection barrel 110, and can stir the solution in the detection barrel 110. It is understood that the stirring action can make the wastewater and the silver nitrate solution mix more evenly, accelerate the reaction rate, and improve the efficiency of the detection.

[0044] The stirring member 130 may be a stirring motor, etc., and the speed of the stirring end thereof is preferably set to 90 r / min to 110 r / min, so that the wastewater and the silver nitrate solution are mixed better and the reaction rate is faster. In order to facilitate the regulation of the stirring member 130, it is preferably set to 90 r / min, 100 r / min or 110 r / min.

[0045] The stirring time of the stirring component 130 is preferably 3 minutes, which can make the wastewater and the silver nitrate solution mix more evenly. Of course, the stirring time of the stirring component 130 can also be greater than or less than 3 minutes. After the stirring is completed, the stirring component 130 stops running, and the solution in the detection barrel 110 needs to be allowed to stand for a certain period of time before the shading degree is detected. Preferably, the standing time is 2 minutes. By standing for 2 minutes, the solution in the detection barrel 110 can react completely, and the influence of the vortex generated by the stirring on the shading degree can be avoided, thereby improving the accuracy of the shading degree detection. If the standing time is too long, the silver chloride precipitate produced is easy to sink to the bottom of the detection barrel 110, which will also have a certain impact on the accuracy of the detection.

[0046] In some embodiments, the slurry washing effect detection device further includes an electric control box 500, and the first valve 220, the second valve 320, the third valve 420 and the light detection element 120 are respectively electrically connected to the electric control box 500. Due to the provision of the electric control box 500, the first valve 220, the second valve 320, the third valve 420 and the light detection element 120 can be automatically controlled, further reducing the labor intensity of the operator, and more efficiently and timely.

[0047] In the embodiment where the stirring component 130 is provided, the stirring component 130 is electrically connected to the electric control box 500, and the stirring component 130 is automatically started or shut down by the electric control box 500, which further reduces the labor intensity of the operator and can also accurately control the start time of the stirring component 130.

[0048] In some embodiments, the detection assembly 100 further includes a first flow meter 230. The first flow meter 230 is disposed on the first pipeline 210 and is located between the first valve 220 and the detection barrel 110, and is used to detect the flow of wastewater entering the detection barrel 110 through the first pipeline 210. The first flow meter 230 is electrically connected to the electric control box 500, and the wastewater flow information obtained by the first flow meter 230 can be transmitted to the electric control box 500, and the electric control box 500 controls the opening or closing of the first valve 220 according to the wastewater flow information, so as to accurately limit the amount of wastewater entering the detection barrel 110, and avoid affecting the detection result due to too much or too little wastewater in the detection barrel 110.

[0049] In some embodiments, the reagent supply assembly 400 further includes a second flow meter 440, which is disposed on the third pipeline 410 and is located between the third valve 420 and the detection barrel 110. The second flow meter 440 is used to detect the flow of the reagent from the third pipeline 410 to the detection barrel 110. The second flow meter 440 is electrically connected to the electric control box 500. After the reagent flow information obtained by the second flow meter 440 is transmitted to the electric control box 500, the electric control box 500 controls the opening or closing of the third valve 420 according to the reagent flow information, thereby being able to accurately limit the amount of reagent entering the detection barrel 110, avoiding the detection result being affected by too little reagent in the detection barrel 110 or waste due to too much reagent.

[0050] In some embodiments, the slurry washing effect detection device further includes a display component, which is used to display the solution shading degree obtained by the light detection element 120, and is electrically connected to the electric control box 500. Due to the provision of the display component, the operator can intuitively learn the solution shading degree of the suspension formed by the wastewater and the reagent after the reaction, thereby judging whether the washing is qualified.

[0051] In some embodiments, the obtained solution opacity is substituted into the working curve to calculate the chloride ion concentration of the generated sample, wherein the working curve is obtained by detecting the opacity of a standard solution of known concentration, performing data fitting between the concentration and the opacity, and determining the conversion equation between the concentration and the opacity.

[0052] When it is necessary to detect the washing effect, the electric control box 500 controls the second valve 320 to close and controls the first valve 220 to open, and the wastewater flows into the detection barrel 110 through the first pipeline 210. After the first valve 220 is opened for a period of time, the wastewater flow rate obtained by the first flowmeter 230 reaches a predetermined value, and the wastewater in the detection barrel 110 reaches a predetermined volume. The electric control box 500 automatically controls the first valve 220 to close and opens the third valve 420 to allow the silver nitrate solution to enter the detection barrel 110 through the third pipeline 410. After the third valve 420 is opened for a period of time, the reagent flow rate obtained by the second flowmeter 440 reaches a predetermined value, and the silver nitrate solution in the detection barrel 110 reaches a predetermined amount. The electric control box 500 controls the third valve 420 to close and controls the stirring component 130 to start. After the stirring component 130 is started for a preset time, the wastewater and the reagent are evenly mixed. The electric control box 500 controls the stirring component 130 to stop running, and the liquid in the detection barrel 110 is left to stand, so that the wastewater and the reagent react fully and produce silver chloride precipitation. The electric control box 500 controls the light detection element 120 to start, and the light detection element 120 detects the light shielding degree of the suspension in the detection barrel 110, and displays the detected light shielding degree of the solution through the display component. After the detection is completed, the electric control box 500 controls the second valve 320 to open, so that the suspension in the detection barrel 110 can be discharged.

[0053] When the solution shading degree displayed by the display component is lower than the standard shading degree, it indicates that the slurry washing is qualified and can be unloaded; when the solution shading degree displayed by the display component is higher than the standard shading degree, it indicates that the slurry washing is unqualified and needs to be continued. After washing for a period of time, the slurry washing effect detection device of this embodiment is used again to detect the wastewater after washing.

[0054] The slurry washing effect detection device of the embodiment of the utility model can detect the washing effect of the slurry. There is no need to take out the slurry for washing and filtering the filter cake, which simplifies the washing effect detection process. Moreover, the opening or closing of the first valve 220, the second valve 320, the third valve 420, the stirring component 130, and the light detection element 120 are automatically controlled by the electrical control box 500, which can reduce the labor intensity of the workers, accurately control the amount of reagents and wastewater, and improve the detection accuracy.

[0055] Second, refer to Figure 3 and Figure 4The embodiment of the utility model also proposes a washing system, including a filter washing assembly 600 and a slurry washing effect detection device proposed in any one of the embodiments of the first aspect. It can be understood that the filter washing assembly 600 is used to wash and filter press the slurry, and the slurry is filtered after washing, and the slurry after filtering forms a filter cake. The traditional washing effect detection is to take out the filter cake formed after filtering and send it for detection. The operation process is cumbersome and inefficient. In this embodiment, the inlet end of the first pipeline 210 of the slurry washing effect detection device is connected to the outlet end of the filter washing assembly 600. The slurry washing effect detection device directly detects the wastewater flowing out after filtering without taking out the filter cake and other operations. The detection process is simpler and more efficient.

[0056] In some embodiments, the inlet end of the outlet pipe 610 is connected to the outlet end of the filter wash assembly 600, the inlet end of the first pipeline 210 and the outlet end of the second pipeline 310 are respectively connected to the outlet pipe 610, and the outlet end of the second pipeline 310 is located between the inlet end of the first pipeline 210 and the outlet end of the outlet pipe 610.

[0057] With such an arrangement, the layout is more reasonable. With only one outlet pipe 610, the wastewater discharge of the filter wash assembly 600, the wastewater supply to the slurry washing effect detection device and the wastewater discharge of the slurry washing effect detection device can be realized, thereby reducing the number of pipelines in the washing system.

[0058] It is understandable that a terminal wastewater tank 611 for storing wastewater may be provided at the outlet end of the water outlet pipe 610 to prevent the wastewater from polluting the surrounding environment after being discharged.

[0059] In some embodiments, the filter wash assembly 600 includes a wash water tank 620, a fourth pipeline 640 and a filter press component. The outlet end of the fourth pipeline 640 is connected to the inlet end of the filter press component, and the inlet end of the fourth pipeline 640 is connected to the wash water tank 620. The wash water tank 620 provides washing water for the filter press component, and the filter press component washes and filters the slurry. A discharge pump 641 is provided on the fourth pipeline 640, and the slurry washing effect detection device is provided with an electric control box 500, and the discharge pump 641 is electrically connected to the electric control box 500 in the slurry washing effect detection device. The electric control box 500 can control the opening or closing of the discharge pump 641, thereby controlling the on-off of the fourth pipeline 640, so as to control whether the wash water tank 620 provides washing water to the filter press component.

[0060] It is understandable that when the solution shading obtained by the light detection element 120 is lower than the standard shading, the washing is judged to be qualified, and the filter press component does not need to continue washing the slurry. The electrical control box 500 controls the discharge pump 641 to close in time to reduce the waste of washing water.

[0061] In some embodiments, the filter press component includes a material washing filter press 630, a low-salt wastewater tank 631, a high-salt wastewater tank 632, a low-salt wastewater filter press 650, a water receiving tank 660 and a security filter 670, and the outlet pipe 610 is connected to the outlet of the security filter 670. The outlet end of the fourth pipeline 640 is connected to the material washing filter press 630. After the slurry is washed in the material washing filter press 630, low-salt wastewater and high-salt wastewater are discharged, wherein the low-salt wastewater flows to the low-salt wastewater tank 631, and the high-salt wastewater flows to the high-salt wastewater tank 632. The wastewater in the low-salt wastewater tank 631 flows to the low-salt wastewater filter press 650 for further filtration, and the wastewater after filtration enters the water receiving tank 660, and then is discharged after being filtered by the security filter 670. The wastewater passes through the outlet pipe 610 and enters the slurry washing effect detection device for detection or is discharged to the terminal wastewater tank 611.

[0062] The single washing time of the washing filter press 630 is generally 1 to 2 hours, preferably 1 hour, 1.5 hours or 2 hours.

[0063] The working process of the whole washing system is as follows: the electric control box 500 controls the discharge pump 641 to start, the washing water tank 620 provides washing water to the washing material filter press 630 through the fourth pipeline 640, the slurry is washed in the washing material filter press 630, and the high-salt wastewater and low-salt wastewater are discharged, wherein the low-salt wastewater enters the low-salt wastewater filter press 650 for further filtration, and passes through the water receiving tank 660 and the security filter 670 in sequence, and is discharged to the terminal wastewater tank 611 through the outlet pipe 610. After the washing material filter press 630 washes for a preset time, the electric control box 500 controls the second valve 320 to close, and controls the first valve 220 to open, and the wastewater in the outlet pipe 610 enters the detection barrel 110 through the first pipeline 210. When the first flowmeter 230 detects that the wastewater flow entering the detection barrel 110 reaches a preset value, the electric control box 500 controls the first valve 220 to close, and controls the third valve 420 to open. The silver nitrate solution in the reagent barrel 430 enters the detection barrel 110 through the third pipeline 410. When the second flowmeter 440 detects that the reagent flow entering the detection barrel 110 reaches a preset value, the controller closes the third valve 420 and controls the stirring component 130 to start. After the stirring component 130 starts for a preset time, the wastewater and the reagent are evenly mixed. The electric control box 500 controls the stirring component 130 to stop running, and the liquid in the detection barrel 110 is left to stand for a period of time to allow the wastewater and the reagent to fully react and produce silver chloride precipitation. The electric control box 500 controls the light detection element 120 to start, and the light detection element 120 performs a light shielding detection on the suspension with silver chloride precipitation in the detection barrel 110, and the obtained solution light shielding is displayed by the display component. After the detection is completed, the electric control box 500 controls the second valve 320 to open, so that the suspension in the detection barrel 110 is discharged to the outlet pipe 610 through the second pipeline 310, and the wastewater flows along the outlet pipe 610 to the terminal wastewater tank 611.

[0064] When the solution shading degree displayed by the display unit is lower than the standard shading degree, it indicates that the slurry washing is qualified and can be unloaded. The electric control box 500 controls the discharge pump 641 to close, and the washing water tank 620 no longer provides washing water to the washing filter press 630. The washing filter press 630 stops washing the slurry to reduce the waste of washing water. When the solution shading degree displayed by the display unit is higher than the standard shading degree, it indicates that the slurry washing is unqualified and needs to be continued. The electric control box 500 controls the discharge pump 641 to remain open, and the washing water tank 620 continues to provide washing water to the washing filter press 630. After washing for a period of time, the waste water after washing is re-tested through the slurry washing effect detection device.

[0065] The washing system of this embodiment is used to wash, filter press and detect the washing effect of the slurry. During the whole process, there is no need to loosen the already compressed filter plates of the washing filter press 630 or the low-salt wastewater filter press 650 and take out the filter cake formed after filtration for inspection. Instead, the ion content in the wastewater discharged from the outlet pipe 610 after washing is directly detected. This can achieve accurate detection of the slurry washing effect and simplify the washing effect detection process, greatly improving work efficiency and reducing washing and filtration costs.

[0066] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A slurry washing effect detection device, characterized in that: include: A detection assembly (100) comprises a detection barrel (110) and a light detection element (120), wherein the light detection element (120) is connected to a side wall of the detection barrel (110), and the light detection element (120) is used to obtain the light-shielding degree of a solution in the detection barrel (110); a wastewater supply assembly (200) for supplying wastewater to the detection barrel (110), the wastewater supply assembly (200) comprising a first pipeline (210) and a first valve (220), the first valve (220) being arranged on the first pipeline (210), and the outlet end of the first pipeline (210) being connected to the detection barrel (110); a wastewater discharge assembly (300) for discharging wastewater from the detection barrel (110); the wastewater discharge assembly (300) comprises a second pipeline (310) and a second valve (320); the second valve (320) is arranged on the second pipeline (310); an inlet end of the second pipeline (310) is connected to the detection barrel (110); A reagent supply assembly (400) comprises a reagent barrel (430), a third pipeline (410) and a third valve (420), wherein the third valve (420) is arranged on the third pipeline (410), the inlet end of the third pipeline (410) is connected to the reagent barrel (430), and the outlet end of the third pipeline (410) is connected to the detection barrel (110).

2. The slurry washing effect detection device according to claim 1, characterized in that: The detection barrel (110) is made of a transparent material, the light detection element (120) is connected to the outer wall surface of the detection barrel (110), and the detection end of the light detection element (120) is arranged toward the inside of the detection barrel (110).

3. The slurry washing effect detection device according to claim 1, characterized in that: The detection assembly (100) further comprises a stirring component (130), wherein a stirring end of the stirring component (130) extends into the interior of the detection barrel (110).

4. The slurry washing effect detection device according to claim 1, characterized in that: The slurry washing effect detection device further comprises an electric control box (500), and the electric control box (500) is electrically connected to the first valve (220), the second valve (320), the third valve (420), and the light detection element (120), respectively.

5. The slurry washing effect detection device according to claim 4, characterized in that: The detection component (100) further comprises a first flow meter (230), wherein the first flow meter (230) is arranged on the first pipeline (210) and is located between the first valve (220) and the detection barrel (110), and the first flow meter (230) is electrically connected to the electric control box (500), and the first flow meter (230) is configured to obtain wastewater flow information and send it to the electric control box (500), so that the electric control box (500) controls the opening or closing of the first valve (220) according to the wastewater flow.

6. The slurry washing effect detection device according to claim 4, characterized in that: The reagent supply assembly (400) also includes a second flow meter (440), which is arranged on the third pipeline (410) and located between the third valve (420) and the detection barrel (110). The second flow meter (440) is electrically connected to the electrical control box (500). The second flow meter (440) is configured to obtain reagent flow information and send it to the electrical control box (500), so that the electrical control box (500) controls the opening or closing of the third valve (420) according to the reagent flow.

7. The slurry washing effect detection device according to claim 4, characterized in that: The slurry washing effect detection device further comprises a display component, the display component is electrically connected to the electric control box (500), and the display component is used to display the light shielding degree of the solution.

8. A washing system, characterized in that: It comprises a filter wash assembly (600) and a slurry washing effect detection device as claimed in any one of claims 1 to 7, wherein the inlet end of the first pipeline (210) of the slurry washing effect detection device is connected to the outlet end of the filter wash assembly (600).

9. The washing system according to claim 8, characterized in that: The washing system further comprises a water outlet pipe (610), the inlet end of the water outlet pipe (610) being connected to the outlet end of the filter wash assembly (600), the outlet end of the second pipeline (310) of the slurry washing effect detection device and the inlet end of the first pipeline (210) being respectively connected to the water outlet pipe (610), and the outlet end of the second pipeline (310) being located between the inlet end of the first pipeline (210) and the outlet end of the water outlet pipe (610).

10. The washing system according to claim 8, characterized in that: The filter washing assembly (600) comprises a washing water tank (620), a fourth pipeline (640) and a filter press component; the inlet end of the first pipeline (210) is connected to the outlet end of the filter press component; the inlet end of the fourth pipeline (640) is connected to the washing water tank (620); the outlet end of the fourth pipeline (640) is connected to the inlet end of the filter press component; a discharge pump (641) is provided on the fourth pipeline (640); the slurry washing effect detection device is provided with an electric control box (500); the discharge pump (641) and the light detection element (120) are respectively electrically connected to the electric control box (500).

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