Pipe network sludge pretreatment device

Abstract

The utility model provides a pipe network sludge pretreatment device. The pipe network sludge pretreatment device comprises an outer box, a dehydration unit, a drying unit, a fixing net and a sampling bottle, the dehydration unit comprises a suction filtration pump, a filter plate and a water tank, the suction filtration pump and the water tank are arranged at the inner bottom of the outer box, and the suction filtration pump is communicated with the water tank through a pipeline; the filter plate is arranged above the suction filtration pump and the water tank, the fixed net is arranged above the suction filtration pump, and the sampling bottle is arranged on the fixed net; the sampling bottle, the filter plate and the suction filtration pump are communicated; the drying unit comprises an air blower and an exhaust rod, the exhaust rod is arranged in the sampling bottle, and the exhaust rod is communicated with the air blower through an air inlet pipe. According to the utility model, the drying efficiency and the sludge sample detection efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of solid waste treatment technology, and in particular to a pipeline sludge pretreatment device. Background Technology

[0002] With the needs of urban development, the length of sewage discharge pipelines continues to increase, and the trend is shifting from construction to operation and maintenance, leading to a continuous increase in the amount of sludge generated by drainage networks. The complex composition and significant variability of sludge from these networks have become key challenges in its disposal. Current sludge composition testing requires pretreatment, and existing pretreatment methods mainly include the following:

[0003] (a) Natural air drying: Place the sludge sample in a cool, ventilated place to dry. This requires the sludge to be tested components to be stable, takes a long time, and requires a larger space for a large number of samples.

[0004] (ii) Centrifugal separation: Centrifugal force is used to quickly separate water from solids in sludge, but this method has limited ability to reduce the water content of sludge;

[0005] (iii) Vacuum freeze drying: A drying technology that uses the principle of sublimation to dehydrate materials. After the sludge is rapidly frozen, it is dehydrated in a vacuum environment (lower than the triple point pressure of water). However, this method requires a relatively stable low temperature and takes a long time.

[0006] (iv) Dehydration with anhydrous sodium sulfate: Anhydrous sodium sulfate is a strong hygroscopic agent that can absorb water from a solution, making the solution drier. Its working principle mainly utilizes the hygroscopic properties of sodium sulfate to adsorb water from the sludge, thereby achieving dehydration. However, this method is time-consuming and inefficient, and the disposal of the sodium sulfate after water absorption also needs to be considered.

[0007] (v) Heating and drying: The sludge sample is placed in an oven at 103℃~105℃ and dried to constant weight. This method requires the components to be tested to be relatively stable. At the same time, the drying process will generate a lot of odor, which will affect the surrounding environment. Utility Model Content

[0008] The purpose of this invention is to provide a pipeline sludge pretreatment device with high drying efficiency.

[0009] The technical solution of this utility model is: a pipeline sludge pretreatment device, including an outer casing and a dewatering unit, a drying unit, a fixing net, and a sampling bottle placed inside the outer casing. The dewatering unit includes a filtration pump, a filter plate, and at least one water tank. The filtration pump and at least one water tank are located at the bottom of the inner casing, and the filtration pump is connected to at least one water tank through a pipeline. The filter plate is placed above the filtration pump and the water tank, the fixing net is placed above the filtration pump, and the sampling bottle is placed on the fixing net. The sampling bottle, the filter plate, and the filtration pump are connected. The drying unit includes a blower and an exhaust rod. The exhaust rod is placed in the sampling bottle, and the exhaust rod is connected to the blower through an air inlet pipe.

[0010] In the above scheme, the sampling bottle, filter plate, and filtration pump are connected. The sewage in the sampling bottle is extracted by the filtration pump, and air is supplied to the sampling bottle by a drying unit with a blower, so that the air comes into contact with the sludge sample, which improves the drying efficiency and greatly improves the efficiency of sludge sample detection, providing basic data support for subsequent sludge treatment and disposal.

[0011] Preferably, the venting rod is provided with a venting hole that communicates with the inside of the sampling bottle.

[0012] Preferably, the filter plate includes a first housing with a vacuum filtration cavity, the upper wall of the first housing is provided with a filter hole corresponding to the position of the sampling bottle, the lower wall of the first housing is provided with a connecting pipe, the bottom of the sampling bottle is connected to the filter hole, the vacuum filtration cavity and the connecting pipe in sequence, and the connecting pipe is connected to the vacuum filtration pump.

[0013] Preferably, a filter membrane is provided inside the filter pores. The filter membrane is disposable for easy replacement.

[0014] Preferably, the filtration pump is provided with a first connection port communicating with the connecting pipe; the filtration pump and the blower are provided with electrical wires.

[0015] Preferably, the fixing mesh has multiple mesh openings arranged in a rectangular array, and each mesh opening corresponds to the installation of one sampling bottle.

[0016] Preferably, the drying unit further includes a second housing with an air cavity, the exhaust rod is installed on the lower wall of the second housing, an air inlet is provided on the side wall of the second housing, the air inlet pipe is housed in the air cavity, and the air inlet pipe passes through the air inlet and is connected to a blower.

[0017] Preferably, the drying unit further includes an air intake pipe, a first air intake hole is provided on the lower wall of the second housing, and a second air intake hole is provided on the side wall of the second housing. One end of the air intake pipe is connected to the first air intake hole, and the other end of the air intake pipe extends through the second air intake hole to the outside of the outer casing.

[0018] Preferably, the exhaust rod and the first intake hole are arranged in a rectangular array and staggered.

[0019] Preferably, a valve is provided on the pipeline connecting the filtration pump and the water tank.

[0020] Preferably, the water tank includes an outer shell with an inner chamber, a second connection port is provided at the upper part of the water tank, and the pipeline on the filtration pump is connected to the second connection port; the lower part of the water tank is provided with a drain port that can be opened or closed.

[0021] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0022] I. The aforementioned pipeline sludge pretreatment device extracts wastewater from the sampling bottle using a suction pump and provides air to the sampling bottle using a drying unit equipped with a blower, allowing the air to contact the sludge sample, thereby improving the drying efficiency and greatly enhancing the efficiency of sludge sample detection, providing basic data support for subsequent sludge treatment and disposal.

[0023] 2. The aforementioned pipeline sludge pretreatment device dries sludge using air blowing and suction methods, eliminating the need for additional chemical agents. Furthermore, the wastewater suctioned during the treatment process can be stored in a water tank and poured into the municipal pipeline for direct treatment. The operation is simple and generates minimal secondary pollution.

[0024] Third, the pipeline sludge pretreatment device is equipped with multiple mesh openings in a rectangular array to fix multiple sampling bottles, which can pretreat multiple sampling bottles at the same time, further improving the efficiency of pretreatment. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of the pipeline sludge pretreatment device provided by this utility model;

[0026] Figure 2 This is a schematic diagram of the drying unit.

[0027] Figure 3 for Figure 2 A frontal view of the structural diagram;

[0028] Figure 4 A schematic diagram showing the distribution structure of the first intake port and the exhaust rod on the second housing;

[0029] Figure 5 This is a schematic diagram showing the distribution structure of the intake pipe and the suction pipe in the second housing;

[0030] Figure 6 This is a schematic diagram of the filter plate structure;

[0031] Figure 7 This is a schematic diagram of the water tank structure;

[0032] Figure 8 This is a schematic diagram of the fixed mesh structure;

[0033] Figure 9 This is a schematic diagram of a vacuum filter pump. Detailed Implementation

[0034] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0035] like Figure 1 As shown, the pipeline sludge pretreatment device provided in this embodiment includes an outer casing 1, a dewatering unit 2, a drying unit 3, a fixing net 4, a sampling bottle 5, and a filter membrane 6.

[0036] The outer casing 1 has a cubic structure, is small in size, and can be placed in the trunk of a vehicle for easy carrying. The outer casing 1 includes an outer wall 1.1, which encloses a cavity 1.2 on its five sides, with the top of the cavity 1.2 being open. The cavity 1.2 houses the dehydration unit 2, the drying unit 3, the fixing net 4, the sampling bottle 5, and the filter membrane 6. An electrical wire 1.3 is arranged inside the outer casing 1, with a connection port inside for connecting to the power cords of the blower 3.10 and the filtration pump 2.1. The other end of the electrical wire 1.3 can be plugged into a municipal power supply. A first lower side door 1.4 is located on one side wall of the outer casing 1, and a second lower side door 1.5 is located on the other side wall. Opening the first lower side door 1.4 and the second lower side door 1.5 allows the corresponding water tank 2.2, filtration pump 2.1, and blower 3.10 to be removed or installed.

[0037] The dehydration unit 2 includes a filtration pump 2.1, at least one water tank 2.2, and a filter plate 2.4. The number of water tanks 2.2 is selected according to actual needs; in this embodiment, there are two water tanks 2.2. The filtration pump 2.1 is selected to have two suction pipes. The two water tanks 2.2, one filtration pump 2.1, and one blower 3.10 are located at the lower end of the cavity 1.2. Figure 7 As shown, the water tank 2.2 is provided with a second connection port 2.1.5, and the pipelines on the filtration pump 2.1 are respectively connected to the second connection port 2.1.5 on the water tank 2.2, and valves 2.1.3 (such as...) are installed on their respective pipelines. Figure 9(As shown). In use, open one of the valves 2.1.3 to connect to one of the water tanks 2.2. When the water tank 2.2 is full, close the valve 2.1.3 and open the valve 2.1.3 connected to the other water tank 2.2. When the water tank 2.2 is full, open the corresponding lower door, remove the water tank 2.2, and open the drain outlet 2.2.3 at the bottom of the water tank 2.2 to drain the wastewater.

[0038] A partition is installed at the upper end of the water tank 2.2, the filtration pump 2.1, and the blower 3.10. The partition is detachably fixed to the interior of the outer casing 1. The filter plate 2.4 is placed on the partition.

[0039] like Figure 7 As shown, the water tank 2.2 includes an outer shell 2.2.1 with an inner tank compartment 2.2.2. The inner tank compartment 2.2.2 is used to store pumped wastewater. The lower part of the water tank 2.2 is provided with a drain outlet 2.2.3 that can be opened or closed. The side wall of the water tank 2.2 is provided with a handle 2.2.7 for easy removal or loading of the water tank 2.2.

[0040] like Figure 6 As shown, the filter plate 2.4 includes a first housing 2.4.2 with a filtration cavity 2.4.3. The upper wall of the first housing 2.4.2 has filter holes 2.4.1 corresponding to the position of the sampling bottle 5. The lower wall of the first housing 2.4.2 has a connecting pipe 2.1.4. Figure 9 As shown, the filtration pump 2.1 is provided with a first connection port 2.1.6 that communicates with the connecting pipe 2.1.4. The filtration pump 2.1 is provided with a power meter 2.1.1 and a power switch 2.1.2 for starting and stopping the filtration pump 2.1.

[0041] like Figure 8 As shown, the fixing net 4 has multiple mesh openings 4.1 arranged in a rectangular array, with each mesh opening 4.1 corresponding to a sampling bottle 5. The fixing net 4 can be made of spring wire with a certain elasticity, which can tighten the outer wall of the sampling bottle 5, ensuring the stability of the sampling bottle 5 during vehicle operation. Figure 6 As shown, the filter holes 2.4.1 are also arranged in a rectangular array and there are multiple of them. The filter holes 2.4.1, the vacuum filtration chamber 2.4.3, the connecting pipe 2.1.4 and the vacuum filtration pump 2.1 are connected.

[0042] like Figure 1As shown, the sampling bottle 5 is installed on the mesh 4.1. The sampling bottle 5 can be a disposable syringe with an opening at the bottom, which is inserted into the filter hole 2.4.1. A filter membrane 6 is installed in the filter hole 2.4.1. The filter membrane 6 is an externally purchased, disposable component with a selected pore size of 0.45 μm, which ensures that water flows out while preventing the sludge sample from flowing into the filtration chamber 2.4.3. Starting the filtration pump 2.1 draws water from the sample in the sampling bottle 5 into the filtration pump 2.1, and finally, the water enters the water tank 2.2.2 of the water tank 2.2 through the pipeline and the second connection port 2.1.5 on the filtration pump 2.1.

[0043] like Figure 2 , Figure 3 As shown, the drying unit 3 includes an exhaust rod 3.4, a blower 3.10, an air intake pipe 3.8, an air inlet pipe 3.9, and a second housing 3.1 having an air cavity 3.2. Figure 4 As shown, multiple exhaust rods 3.4 are installed on the lower wall of the second housing 3.1, and multiple first air intake holes 3.5 are provided on the lower wall of the second housing 3.1. The multiple exhaust rods 3.4 correspond one-to-one with the mesh holes 4.1, and are all arranged in a rectangular array. The multiple first air intake holes 3.5 are also arranged in a rectangular array, and are staggered with the multiple exhaust rods 3.4.

[0044] The second housing 3.1 and the exhaust rod 3.4 mounted thereon are detachably fitted onto the outer casing 1, allowing the open top of the outer casing 1 to be sealed. During installation, the fixing mesh 4 is installed using fixing nails on the side wall of the outer casing 1, ensuring the gap of the fixing mesh 4 is above the filter plate 2.4; then, the sampling bottle 5 is placed in the mesh opening 4.1, with the pinhole at the bottom of the sampling bottle 5 inserted into the filter opening 2.4.1; finally, the second housing 3.1 is placed over the outer casing 1, allowing the exhaust rod 3.4 to be inserted into the sampling bottle 5. To remove the sampling bottle 5, the second housing 3.1 must be opened first, allowing it to be removed from the outer casing 1 from above.

[0045] like Figure 5 As shown, the air cavity 3.2 is equipped with an air intake pipe 3.8 and an air inlet pipe 3.9. The air intake pipe 3.8 connects each of the first air intake holes 3.5. The air inlet pipe 3.9 connects each of the exhaust rods 3.4. Figure 1 , Figure 2 As shown, the second housing 3.1 has an air inlet 3.7 and a second air intake 3.6 on its side wall. The air inlet pipe 3.9 and the air intake pipe 3.8 are housed within the air cavity 3.2. The air inlet pipe 3.9 passes through the air inlet 3.7 and connects to the blower 3.10. One end of the air intake pipe 3.8 communicates with the first air intake 3.5, and the other end of the air intake pipe 3.8 extends through the second air intake 3.6 to the outside of the outer casing 1.

[0046] like Figure 3 As shown, the upper end of the exhaust rod 3.4 is mounted on the lower wall of the second housing 3.1, and the lower end of the exhaust rod 3.4 extends into the sampling bottle 5. Multiple exhaust holes 3.4.1 are arranged on the exhaust rod 3.4. The exhaust rod 3.4 has a hollow structure, and the hollow interior forms an airflow channel. The sampling bottle 5 is inserted into the mesh 4.1 (e.g., ...). Figure 1 (As shown). The diameter of the exhaust rod 3.4 is approximately 1 / 3 of the diameter of the sampling bottle 5.

[0047] The blower 3.10 is equipped with an electric heater and can blow out hot air. After the filtration pump 2.1 finishes pumping water, the blower 3.10 is started. Hot air enters the connected exhaust rod 3.4 through the air inlet pipe 3.9 and is blown out through the exhaust hole 3.4.1 on the exhaust rod 3.4, so that the hot air can fully contact the sludge in the sampling bottle 5, and finally further dry the sludge and prevent the sludge from clumping.

[0048] During the exhaust process described above, since the outer casing 1 is a sealed structure, the excess gas blown out enters the intake pipe 3.8 through the first intake hole 3.5 and is then discharged from the outside of the outer casing 1 through the intake pipe 3.8.

[0049] The specific usage process of the pipe network sludge pretreatment device provided by this utility model is as follows: Place the collected sludge sample bottle 5, containing the sludge sample to be treated, into the mesh of the fixing net 4. If there are multiple bottles, insert them one by one. Insert the pinhole at the bottom of the sampling bottle 5 into the filter hole 2.4.1. Then, cover the outer box 1 with the second housing 3.1, and insert the exhaust rod 3.4 into the sampling bottle 5. Turn on the power switch 2.1.2 on the filtration pump 2.1. Under the suction force of the filtration pump 2.1, the water in the sludge sample separates from the sludge solids and flows into the water tank 2.2 through the connecting pipe 2.1.4. An observation window can be opened on the side wall of the water tank 2.2. Open the first lower side door 1.4 and the second lower side door 1.5 to observe the water level change in the water tank 2.2 through the observation window. If the water level line no longer rises, it indicates that the batch of samples has been filtered. If the water level in tank 2.2 exceeds the maximum water level, the system will switch to another tank 2.2 to store wastewater via valve 2.1.3.

[0050] After filtration, turn on the power switch on blower 3.10 and simultaneously start the built-in electric heater, allowing hot air to be blown out from the air inlet pipe 3.9, exhaust rod 2.4, and exhaust port 3.4.1, contacting the sample in sampling bottle 5. After the sample has been dried by hot air, turn off the power switch (this can be determined based on empirical time values), completing the sample pretreatment.

[0051] Open the second housing 3.1, remove the sampling bottle 5, and then send the sampling bottle 5 to the laboratory for testing. The sampling bottle 5 and filter membrane 6 need to be replaced before the next use.

[0052] The pipeline sludge pretreatment device provided by this utility model can efficiently pretreat various types of pipeline sludge, has a wide range of applications, and improves the accuracy of subsequent testing indicators.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pipe network sludge pretreatment device, characterized in that, The device includes an outer casing (1) and a dehydration unit (2), a drying unit (3), a fixing net (4), and a sampling bottle (5) placed inside the outer casing (1). The dehydration unit (2) includes a filtration pump (2.1), a filter plate (2.4), and at least one water tank (2.2). The filtration pump (2.1) and at least one water tank (2.2) are located at the bottom inside the outer casing (1). The filtration pump (2.1) is connected to at least one water tank (2.2) through a pipeline. The filter plate (2.4) is placed inside the filtration pump. Above (2.1) and the water tank (2.2), the fixed net (4) is placed above the filtration pump (2.1), and the sampling bottle (5) is placed on the fixed net (4); the sampling bottle (5), the filter plate (2.4) and the filtration pump (2.1) are connected; the drying unit (3) includes a blower (3.10) and an exhaust rod (3.4), the exhaust rod (3.4) is placed in the sampling bottle (5), and the exhaust rod (3.4) is connected to the blower (3.10) through an air inlet pipe (3.9).

2. The pipeline sludge pretreatment device according to claim 1, characterized in that, The filter plate (2.4) includes a first housing (2.4.2) having a vacuum filtration cavity (2.4.3). The upper wall of the first housing (2.4.2) is provided with a filter hole (2.4.1) corresponding to the position of the sampling bottle (5). The lower wall of the first housing (2.4.2) is provided with a connecting pipe (2.1.4). The bottom of the sampling bottle (5) is connected to the filter hole (2.4.1), the vacuum filtration cavity (2.4.3) and the connecting pipe (2.1.4) in sequence. The connecting pipe (2.1.4) is connected to the vacuum filtration pump (2.1).

3. The pipeline sludge pretreatment device according to claim 2, characterized in that, The filter pore (2.4.1) is provided with a filter membrane (6).

4. The pipeline sludge pretreatment device according to claim 2, characterized in that, The filtration pump (2.1) is provided with a first connection port (2.1.6) that communicates with the connecting pipe (2.1.4); the filtration pump (2.1) and the blower (3.10) are provided with wires (1.3).

5. The pipeline sludge pretreatment device according to claim 1, characterized in that, The fixed net (4) has a rectangular array of multiple mesh holes (4.1), and each mesh hole (4.1) corresponds to the installation of a sampling bottle (5).

6. The pipeline sludge pretreatment device according to claim 1, characterized in that, The drying unit (3) further includes a second housing (3.1) having an air cavity (3.2), the exhaust rod (3.4) is installed on the lower wall of the second housing (3.1), an air inlet (3.7) is provided on the side wall of the second housing (3.1), the air inlet pipe (3.9) is housed in the air cavity (3.2), and the air inlet pipe (3.9) passes through the air inlet (3.7) and is connected to the blower (3.10).

7. The pipeline sludge pretreatment device according to claim 6, characterized in that, The drying unit (3) also includes an air intake pipe (3.8), a first air intake hole (3.5) is provided on the lower wall of the second housing (3.1), and a second air intake hole (3.6) is provided on the side wall of the second housing (3.1). One end of the air intake pipe (3.8) is connected to the first air intake hole (3.5), and the other end of the air intake pipe (3.8) extends through the second air intake hole (3.6) to the outside of the outer box (1).

8. The pipeline sludge pretreatment device according to claim 7, characterized in that, The exhaust rod (3.4) and the first intake hole (3.5) are arranged in a rectangular array and staggered.

9. The pipeline sludge pretreatment device according to claim 1, characterized in that, A valve (2.1.3) is provided on the pipeline connecting the filtration pump (2.1) and the water tank (2.2).

10. The pipeline sludge pretreatment device according to claim 1, characterized in that, The water tank (2.2) includes an outer shell (2.2.1) having an inner tank compartment (2.2.2), and a second connection port is provided at the upper part of the water tank (2.2). 2.1.5), the pipeline on the filtration pump (2.1) is connected to the second connection port (2.1.5); the lower part of the water tank (2.2) is provided with a drain port (2.2.3) that can be opened or closed.

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