Sludge sampling device

Abstract

The utility model relates to the technical field of environmental protection, and discloses a sludge sampling device which is characterized by comprising a box body, and a sludge cavity and a clear water cavity which are independent from each other are arranged in the box body; a filter part is arranged in the sludge cavity, the filter part and the bottom and the side wall of the sludge cavity are encircled to form a pre-filtration area, and the filter part and the top and the side wall of the sludge cavity are encircled to form a post-filtration area; a sludge inlet is formed in the side wall of the post-filtration area, a sludge inlet pipe is mounted at the sludge inlet and extends from the sludge inlet to the bottom of the sludge cavity to the pre-filtration area, and a self-control valve is arranged on the sludge inlet pipe; a floating type water taking device is arranged in the post-filtration area, a through hole is formed in the floating type water taking device in the axial direction, a water taking pipe is installed in the through hole, the distance between the bottom end of the water taking pipe and the bottom end of the floating type water taking device is larger than zero, and the top of the water taking pipe extends towards the open end of the sludge cavity and is communicated with the clear water cavity. The device disclosed by the utility model is compact in structure, small in occupied area, convenient to operate and capable of effectively reducing personal errors and improving the sampling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a sludge sampling device. Background Art

[0002] With the continuous development of automation technology, more and more fields have begun to introduce automated equipment for precise and efficient operations. In the field of environmental protection, automated sampling devices have also gradually been used. However, most of the automated sampling devices on the market are designed for water samples or other types of sludge, and do not take into account the particularity of nitrifying bacteria sludge and the specific needs of early warning monitoring of influent water quality.

[0003] As a key microbial group in the biological denitrification process, the activity and quantity of nitrifying bacteria sludge are closely related to the nitrogen content in the influent water quality. By monitoring the status of nitrifying bacteria sludge, the changing trend of influent water quality can be indirectly inferred, thereby realizing early warning monitoring of influent water quality. However, the traditional nitrifying bacteria sludge sampling method has many shortcomings, such as low sampling efficiency, large human errors, and many sludge impurities, which makes it difficult to meet the stability and accuracy requirements of nitrifying bacteria used in influent water quality early warning monitoring.

[0004] Therefore, how to provide an automated sludge sampling device with high sampling efficiency and the ability to effectively reduce impurities is an urgent problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a sludge sampling device to solve the problems of low sampling efficiency, large human error, and much sludge impurities in the existing sludge sampling process.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A sludge sampling device comprises a box body, wherein the box body is provided with a sludge chamber and a clean water chamber which are independent of each other;

[0008] A filter is provided inside the sludge chamber, and the filter divides the sludge chamber into a pre-filter area and a post-filter area which are arranged sequentially from top to bottom; a sludge inlet is provided on the side wall of the post-filter area, and a sludge inlet pipe is installed on the sludge inlet, and the sludge inlet pipe extends from the sludge inlet toward the bottom of the sludge chamber to the pre-filter area, and the sludge inlet pipe is provided with an automatic control valve;

[0009] The post-filtration area is provided with a floating water intake device, and the floating water intake device is provided with a through hole in its axial direction. A water intake pipe is installed in the through hole, and one end of the water intake pipe close to the bottom end of the floating water intake device is suspended. One end of the water intake pipe away from the bottom end of the floating water intake device extends toward the opening end of the sludge chamber and is connected to the clean water chamber.

[0010] Preferably, the floating water intake device includes a floating body and a plurality of connecting plates. The through hole is formed in the floating body, and the water intake pipe is installed in the through hole through the plurality of connecting plates.

[0011] Preferably, the sludge chamber is provided with a supernatant outlet, and a supernatant outlet pipe is installed at the supernatant outlet. The clear water chamber is provided with a supernatant inlet, and a supernatant inlet pipe is installed at the supernatant inlet. One end of the supernatant outlet pipe is communicated with the water intake pipe, and the other end is communicated with the supernatant inlet pipe. Automatic control valves are arranged on both the supernatant inlet pipe and the supernatant outlet pipe.

[0012] Preferably, a spray head is arranged in the filtered area. The spray head is communicated with the clear water chamber through a spray pipe, and an automatic control valve is arranged on the spray pipe.

[0013] Preferably, the clear water chamber is provided with a clear water outlet, and a clear water outlet pipe is installed at the clear water outlet. The clear water outlet pipe is communicated with the spray pipe, and an automatic control valve is arranged on the clear water outlet pipe.

[0014] Preferably, a centrifugal pump is further included. The water outlet ends of the supernatant outlet pipe and the clear water outlet pipe are both connected to the centrifugal pump, and the water inlet ends of the supernatant inlet pipe and the spray pipe are both connected to the centrifugal pump.

[0015] Preferably, a sludge sampling port is formed in the side wall of the filtered area, and a sludge sampling pipe is installed at the sludge sampling port. An automatic control valve is arranged on the sludge sampling pipe.

[0016] Preferably, a bracket and an end cover are further included. The box body is installed on the bracket, and the end cover is installed at the open end of the box body.

[0017] The present utility model provides a sludge sampling device. Compared with the prior art, its beneficial effects are as follows:

[0018] In the present utility model, the sludge sampling device is divided into an independent sludge chamber and a clear water chamber. The sludge inlet pipe extends downward from the top of the sludge chamber to the bottom of the filtering element, that is, in the pre-filtered area, so that the sediment and large particle impurities in the sludge can be intercepted at the bottom of the sludge chamber, ensuring that the taken sludge has less impurities and high stability, and improving the practicability of the sludge.

[0019] The floating water intake device in the present utility model floats in the filtered area of the sludge chamber. The design of its floating type and the length of the water intake pipe enables the water intake device to only take the supernatant clear water into the clear water chamber without taking the lower sludge, having a self-protection function for supernatant removal. It not only improves the accuracy of supernatant removal but also enhances the self-adaptability of the device, enabling it to adapt to the sampling requirements under different liquid level conditions.

[0020] The device of the present utility model has a compact structure, occupies a small area, and is convenient to operate. The automatic control valve can realize the automatic sludge sampling function, reduce human error, improve the sampling efficiency, and can filter, precipitate, and remove the supernatant of the sludge, etc., so as to achieve the characteristics of stable sludge sampling concentration and no impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 is a schematic three-dimensional structure diagram of the sludge sampling device in the embodiment of the present utility model;

[0023] Figure 2 is an internal cross-sectional view of the sludge sampling device in the embodiment of the present utility model;

[0024] Figure 3 is a top view of the part below the end cover of the sludge sampling device in the embodiment of the present utility model;

[0025] Figure 4 is a schematic structure diagram of the floating water intake device in the embodiment of the present utility model.

[0026] In the figure, 100 - box body, 110 - sludge chamber, 111 - filter element, 112 - automatic control valve I, 120 - clear water chamber, 121 - automatic control valve II, 130 - bracket, 140 - end cover, 141 - end cover handle, 200 - floating water intake device, 210 - floating body, 220 - water intake pipe, 230 - connecting plate, 240 - hose, 300 - sludge inlet pipe, 310 - automatic control valve III, 400 - supernatant outlet pipe, 410 - automatic control valve IV, 500 - supernatant inlet pipe, 510 - automatic control valve V, 600 - clear water outlet pipe, 610 - automatic control valve VII, 700 - spray pipe, 710 - spray head, 720 - automatic control valve VI, 800 - centrifugal pump, 810 - main water outlet pipe, 900 - sludge sampling pipe, 910 - automatic control valve VIII. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These terms are only used for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present application.

[0029] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] As Figures 1-3 shown, an embodiment of the present utility model provides a sludge sampling device, including a box body 100 and a bracket 130. Among them, the box body 100 is supported on the ground by the bracket 130. The bracket 130 may be a support leg, which is not specifically limited herein, and the box body 100 can be moved according to actual needs, making the use site convenient and flexible. An end cover 140 is provided at the open end of the box body 100 to prevent external dust, impurities, etc. from entering, and the end cover 140 is provided with an end cover handle 141. The number of the end cover handles 141 is a and a≥1, preferably a = 2.

[0032] In some embodiments of the present utility model, an independent sludge chamber 110 and a clear water chamber 120 are provided inside the box body 100. Preferably, the closed ends of the sludge chamber 110 and the clear water chamber 120 are both provided as conical bodies, which is convenient for the discharge of sludge impurities in the final sludge chamber 110 and clear water in the clear water chamber 120.

[0033] Optionally, a sludge drain pipe is provided at the conical end of the sludge chamber 110, and the sludge drain pipe is connected with a self-controlled valve I 112; a clear water drain pipe is provided at the conical end of the clear water chamber 120, and the clear water drain pipe is connected with a self-controlled valve II 121. The self-controlled valves in the present utility model can be ball valves, solenoid valves or other valves that can achieve automatic control, and can realize the automatic control of the fluid flow in the corresponding pipelines.

[0034] In some embodiments of the present utility model, a filter element 111 is provided inside the sludge chamber 110, and the filter element 111 divides the sludge chamber 110 into a pre-filter area and a post-filter area arranged in sequence from top to bottom, that is, the outer periphery of the filter element 111 is completely fixedly attached to the inner wall of the sludge chamber 110. The filter element 111 and the bottom and side walls of the sludge chamber 110 surround to form the pre-filter area, and the filter element 111 and the top and side walls of the sludge chamber 110 surround to form the post-filter area.

[0035] Optionally, the filter element 111 can be a filter orifice plate provided with round holes, and the diameter of the round holes of the filter orifice plate is c, preferably c≤4mm. Foreign matters and impurities in the nitrifying bacteria sludge are intercepted by the filter element 111 and settle to the bottom of the sludge chamber 110.

[0036] In some embodiments of the present utility model, a sludge inlet is provided on the side wall of the post-filter area, and a sludge inlet pipe 300 is installed at the sludge inlet, and the sludge inlet pipe 300 extends from the sludge inlet to the bottom of the sludge chamber 110 into the pre-filter area, and a self-controlled valve III 310 is provided at the front end of the sludge inlet pipe 300.

[0037] It can be understood that the sludge inlet pipe 300 passes through the side wall of the sludge chamber 110 and the filter element 111 and then extends into the pre-filter area. When the self-controlled valve III 310 is opened, the sludge is pumped into the sludge inlet pipe 300 and enters the pre-filter area of the sludge chamber 110. The sludge level in the sludge chamber 110 rises as the sludge continuously enters. Foreign matters and impurities in the sludge are intercepted by the filter element 111 and settle to the bottom of the sludge chamber 110, and the rising sludge level in the sludge chamber 110 drives the floating water intake device 200 to rise.

[0038] In some embodiments of the present utility model, the floating water intake device 200 is arranged on the top of the filter element 111, that is, in the post-filter area. A through hole is provided axially in the floating water intake device 200, and a water intake pipe 220 is installed in the through hole, and one end of the water intake pipe 220 close to the bottom end of the floating water intake device 200 is in a suspended state. One end of the water intake pipe 220 away from the bottom end of the floating water intake device 200 extends towards the opening end of the sludge chamber 110 and is communicated with the clear water chamber 120.

[0039] A water intake pipe is installed in the through hole, and one end of the water intake pipe close to the bottom end of the floating water intake device is in a suspended state. One end of the water intake pipe away from the bottom end of the floating water intake device extends towards the opening end of the sludge chamber and is communicated with the clear water chamber.

[0040] Optionally, as Figure 4 shown, the floating water intake device 200 includes a floating body 210 and a plurality of connecting plates 230. A through hole is formed in the floating body 210, and the water intake pipe 220 is installed in the through hole through the plurality of connecting plates 230. Specifically, both ends of the connecting plate 230 are respectively fixed to the outer side of the water intake pipe 220 and the inner side of the floating body 210. The number of the connecting plates 230 is d, d≥2, and preferably the connecting plates 230 are evenly distributed on the outer side of the water intake pipe 220 to ensure the overall stability of the floating water intake device 200.

[0041] It can be understood that the distance between the bottom end of the water intake pipe 220 and the bottom end of the floating body 210 is greater than zero, that is, the bottom end of the water intake pipe 220 does not extend to the bottom end of the floating body 210, but there is a certain distance between the bottom end of the water intake pipe 220 and the bottom end of the floating body 210. The relative height between the water intake pipe 220 and the floating body 210 makes the lower end of the water intake pipe 220 always below the clear water liquid level and above the sludge liquid level at the same time. In any case, due to the different densities of the sludge and the supernatant, the draft depth of the water intake pipe 220 caused by the floating body 210 can ensure that the floating water intake device 200 can only extract the supernatant in the sludge chamber 110 into the clear water chamber 120.

[0042] In some embodiments of the present invention, the sludge chamber 110 is provided with a supernatant outlet, and a supernatant outlet pipe 400 is installed at the supernatant outlet. The supernatant outlet pipe 400 is connected with a control valve Ⅳ 410; the clear water chamber 120 is provided with a supernatant inlet, and a supernatant inlet pipe 500 is installed at the supernatant inlet. The supernatant inlet pipe 500 is connected with a control valve Ⅴ 510; one end of the supernatant outlet pipe 400 is communicated with the water intake pipe 220 through a hose 240, and the other end is communicated with the supernatant inlet pipe 500 to transfer the supernatant in the sludge chamber 110 to the clear water chamber 120.

[0043] In some embodiments of the present invention, a spray head 710 is provided in the filtered area. The spray head 710 is communicated with the clear water chamber 120 through a spray pipe 700. The spray head 710 can be a rotary spray head for example. The number of the rotary spray heads is e, e≥3; the spray pipe 700 is provided with a control valve Ⅵ 720.

[0044] Optionally, the clear water chamber 120 is provided with a clear water outlet, and a clear water outlet pipe 600 is installed at the clear water outlet. The clear water outlet pipe 600 is communicated with the spray pipe 700, and the clear water outlet pipe 600 is provided with a control valve Ⅶ 610.

[0045] It can be understood that the supernatant stored in the clean water chamber 120 can be used to rotate and wash the inner wall of the sludge chamber 110 through the spray pipeline 700 and the spray head 710, so as to timely remove the sludge accumulated on the filter element 111 and the inner wall of the sludge chamber 110 and prevent blockage, realizing the self-cleaning function of the inner wall of the box body 100. The utility model does not need to additionally connect a clean water source, which not only saves water resources but also saves space. At the same time, the self-cleaning function ensures the cleanliness inside the device and provides a good environment for subsequent sampling work.

[0046] In some embodiments of the present utility model, a centrifugal pump 800 is provided outside the box body 100, preferably a self-priming centrifugal pump 800. The water outlet ends of the supernatant water outlet pipe 400 and the clean water outlet pipe 600 are both connected to the centrifugal pump 800, and the water inlet ends of the supernatant water inlet pipe 500 and the spray pipeline 700 are both connected to the centrifugal pump 800.

[0047] Optionally, the water inlet end of the centrifugal pump 800 is connected to the supernatant water outlet pipe 400 and the clean water outlet pipe 600 through a tee, and the water outlet end is connected with a main water outlet pipe 810. The main water outlet pipe 810 is connected to the supernatant water inlet pipe 500 and the spray pipeline 700 through a tee.

[0048] In some embodiments of the present utility model, a sludge taking port is provided on the side wall of the filtered area, and a sludge taking pipe 900 is installed at the sludge taking port. The sludge taking pipe 900 is provided with a self-control valve VIII 910 to facilitate controlling the opening and closing and the flow rate of the sludge taking pipe 900.

[0049] Optionally, the sludge taking port is arranged in the middle section of the side wall of the sludge chamber 110 for sludge taking. Preferably, the height of the sludge taking port relative to the ground is lower than that of the mud inlet, which ensures relatively high sludge concentration stability, less impurities and high effective bacteria content, greatly improving the practicality of the sludge.

[0050] The working process of the sludge sampling device of the present utility model is as follows:

[0051] Open the self-control valve III 310, close the self-control valve I 112 and the self-control valve II 121. The sludge in the sludge raw water tank is pumped to the sludge chamber 110 through the mud inlet pipe 300, and after being filtered by the filter element 111, it is left to stand and stratify. The upper layer is the supernatant, and the lower layer is the sludge sediment; open the self-control valve IV 410 and the self-control valve V 510, close the self-control valve VI 720 and the self-control valve VII 610, start the centrifugal pump 800, and the supernatant in the sludge chamber 110 is pumped to the clean water chamber 120 through the floating water intake device 200; open the self-control valve VIII 910, and the sludge in the sludge chamber 110 can be taken out through the sludge taking pipe for use.

[0052] After the sludge sampling is completed, close the automatic control valve Ⅲ310, open the automatic control valve Ⅰ112, and let the sludge in the sludge chamber 110 enter the original sludge pool through the sludge drain pipe; close the automatic control valve Ⅳ410 and the automatic control valve Ⅴ510, open the automatic control valve Ⅵ720 and the automatic control valve Ⅶ610, start the centrifugal pump 800, and the clear water in the clear water chamber 120 is sprayed out through the clear water outlet pipe 600 and the spray pipe 700 with the spray head 710 to wash the inner wall of the sludge chamber 110 and the filter element 111, and the washing water is then drained into the original sludge pool; open the automatic control valve Ⅱ121, and the remaining clear water in the clear water chamber 120 enters the original sludge pool through the clear water drain pipe.

[0053] In summary, the sludge sampling device of the present utility model takes mud in the original sludge pool and discharges the remaining sludge and supernatant to the original sludge pool to achieve water saving, land saving and environmental protection, and avoid the random discharge of sludge and secondary pollution to the environment. This way of recycling not only reduces the workload of sludge treatment and the treatment cost, but also reflects the dual benefits of rational utilization of resources and environmental protection.

[0054] The device of the present utility model can effectively precipitate and filter sludge, and solves the problems of unstable sludge such as large differences in the concentration of sludge bacteria agents and many impurity particles during mud sampling; in addition, the device of the present utility model uses the supernatant of the gravity stratification of nitrifying bacteria sludge to self-clean the device itself, and discharges the remaining sludge and supernatant to the original mud sampling pool, greatly improving the applicability and convenience of the device, and is suitable for automatic devices for mud sampling in various sewage and wastewater experiments and monitoring.

[0055] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A sludge sampling device, characterized in that: It comprises a box body, wherein the inside of the box body is provided with a sludge chamber and a clean water chamber which are independent of each other; A filter is provided inside the sludge chamber, and the filter divides the sludge chamber into a pre-filter area and a post-filter area which are arranged sequentially from top to bottom; a sludge inlet is provided on the side wall of the post-filter area, and a sludge inlet pipe is installed on the sludge inlet, and the sludge inlet pipe extends from the sludge inlet toward the bottom of the sludge chamber to the pre-filter area, and the sludge inlet pipe is provided with an automatic control valve; The post-filtration area is provided with a floating water intake device, and the floating water intake device is provided with a through hole in its axial direction. A water intake pipe is installed in the through hole, and one end of the water intake pipe close to the bottom end of the floating water intake device is suspended. One end of the water intake pipe away from the bottom end of the floating water intake device extends toward the opening end of the sludge chamber and is connected to the clean water chamber.

2. The sludge sampling device according to claim 1, characterized in that: The floating water intake device comprises a floating body and a plurality of connecting plates. The through hole is opened in the floating body, and the water intake pipe is installed in the through hole through the plurality of connecting plates.

3. The sludge sampling device according to claim 1, characterized in that: The sludge chamber is provided with a supernatant liquid outlet and a supernatant liquid outlet pipe is installed at the supernatant liquid outlet, the clean water chamber is provided with a supernatant liquid inlet and a supernatant liquid inlet pipe is installed at the supernatant liquid inlet; one end of the supernatant liquid outlet pipe is connected to the water intake pipe, and the other end is connected to the supernatant liquid inlet pipe; the supernatant liquid inlet pipe and the supernatant liquid outlet pipe are both provided with automatic control valves.

4. The sludge sampling device according to claim 3, characterized in that: A spray head is arranged in the post-filtration area, and the spray head is communicated with the clean water cavity through a spray pipe, and the spray pipe is provided with an automatic control valve.

5. The sludge sampling device according to claim 4, characterized in that: The clean water cavity is provided with a clean water outlet and the clean water outlet is provided with a clean water outlet pipe, the clean water outlet pipe is communicated with the spray pipe, and the clean water outlet pipe is provided with an automatic control valve.

6. The sludge sampling device according to claim 5, characterized in that: It also includes a centrifugal pump, the outlet ends of the supernatant liquid outlet pipe and the clean water outlet pipe are both connected to the centrifugal pump, and the supernatant liquid inlet pipe and the inlet end of the spray pipe are both connected to the centrifugal pump.

7. The sludge sampling device according to claim 1, characterized in that: A mud intake port is provided on the side wall of the post-filtration zone, and a mud intake pipe is installed at the mud intake port, and the mud intake pipe is provided with an automatic control valve.

8. The sludge sampling device according to claim 1, characterized in that: It also includes a bracket and an end cover, the box body is installed on the bracket, and the end cover is installed on the open end of the box body.

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