Sludge pretreatment equipment

Abstract

The utility model discloses sludge pretreatment equipment and relates to the technical field of sludge treatment. Sludge pretreatment equipment comprises a treatment box, the lower bottom end of the treatment box is fixedly connected with a supporting seat, the upper top end of the treatment box is fixedly connected with a stepping motor, the output end of the stepping motor is fixedly sleeved with a stirring roller used for stirring slurry, and one side of the treatment box is provided with a stirring assembly used for pretreating the slurry. The stirring assembly comprises a stirring box arranged on one side of the treatment box, sludge is stirred and diluted through the stirring assembly firstly, the diluted sludge is pumped into the treatment box through the pump body, and a chemical agent is further added through the agent box to treat the diluted sludge; and the treated clean water is pumped back into the stirring assembly through the water return pump to form circulation, the stirring efficiency is improved under the condition that water resources are saved, the water content in the sludge is reduced through the heating box, and the next incineration efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to a sludge pretreatment device. Background Art

[0002] Sludge treatment refers to the process of reducing, stabilizing, rendering harmless, and recycling sludge. Its goal is to achieve these objectives. Sludge pretreatment equipment first processes the sludge through mixing, treatment, and drying to make it suitable for incineration.

[0003] An investigation revealed that a Chinese utility model patent (publication number: CN216550052U) discloses a highly efficient pretreatment device for oily sludge. The device is generally described as including a feed hopper, a first vibrating screen below the outlet of the feed hopper, an oil-water separator below the outlet of the first vibrating screen, a second vibrating screen below the outlet of the oil-water separator, a sludge conveying device with its feed end below the outlet of the second vibrating screen, a magnetic screening device above the sludge conveying device, and a discharge hopper below the discharge end of the sludge conveying device. The pretreatment device also includes an automatic controller.

[0004] While the above-mentioned technical solution can screen stones in sludge using a screening device and remove gravel by using a second screening device, the composition of sludge is often extremely complex in actual sludge pretreatment. It often contains excessive plastic waste, gravel, and other debris, which cannot be completely removed by screening alone. Furthermore, when flexible plastic waste and other difficult-to-screen debris become entangled on the screening rollers, it can cause the motor to overload and burn out. Moreover, simply treating the sludge by screening alone cannot remove many harmful substances mixed in with the sludge, making it difficult to meet incineration standards.

[0005] Therefore, this utility model provides a sludge pretreatment device to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a sludge pretreatment device that solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A sludge pretreatment device includes a treatment box, a support base fixedly connected to the bottom of the treatment box, a stepper motor fixedly connected to the top of the treatment box, a stirring roller for stirring sludge fixedly sleeved at the output end of the stepper motor, and a stirring assembly for pretreated sludge provided on one side of the treatment box.

[0009] The mixing assembly includes a mixing tank located on one side of the processing tank. A feeding port for adding solid sludge is located at the top of the mixing tank. A servo motor is fixedly connected to the inner wall of the mixing tank. A drive wheel is fixedly sleeved at the output end of the servo motor. Multiple crushing rollers for crushing the sludge are rotatably connected to the inner wall of the mixing tank, and one of the crushing rollers is fixedly sleeved at the output end of the servo motor. A driven wheel is fixedly connected to the end of the crushing roller, and the driven wheel meshes with the drive wheel for transmission. A spiral roller for stirring the sludge is rotatably connected to the bottom of the mixing tank. Stirring rods for stirring the sludge are rotatably connected to both sides of the spiral roller at the bottom of the mixing tank. A housing is fixedly connected to the bottom of the mixing tank. A drive motor is fixedly connected to the inner wall of the housing, and the output end of the drive motor is fixedly sleeved at the end of the spiral roller. A geared disc is fixedly sleeved on the outer wall of the output end of the drive motor. The geared disc meshes with two toothed seats, and the toothed seats are fixedly connected to the ends of the stirring rods.

[0010] A further improvement of the present invention is that the stirring assembly further includes a flushing rod formed on the inner wall of the stirring tank. The flushing rod is hollow inside and has multiple high-pressure nozzles fixedly connected to its inner wall. The outer wall of the flushing rod has a water inlet for water intake.

[0011] A further improvement of this utility model is that: the top of the processing box is provided with an inlet for adding the agent, so a reagent box for storing various chemical agents is provided on one side of the processing box. Multiple partition plates for dividing the agent are fixedly connected to the inner wall of the reagent box. A feeding pump is provided at the top of the reagent box. A high-pressure pipe is fixedly connected to the output end of the feeding pump, and the end of the high-pressure pipe is fixedly connected to the inlet.

[0012] A further improvement of this utility model is that: a sludge pump is fixedly connected to the side wall of the mixing tank, and the output end of the sludge pump is fixedly connected to the treatment tank; a return water pump is fixedly connected to the outer wall of the treatment tank, and the output end of the return water pump is fixedly connected to the mixing tank.

[0013] A further improvement of this utility model is that: a heating box is provided on one side of the treatment box, a sewage pump for pumping out sludge is fixedly connected to the outer wall of the treatment box, the output end of the sewage pump is located inside the heating box, a heater is fixedly connected to the side wall of the heating box, and a plurality of heating rods that cooperate with the heater to heat are fixedly connected to the bottom of the heating box.

[0014] A further improvement of this utility model is that: a slurry inlet pipe for injecting sludge is fixedly connected to the outer wall of the mixing tank, and a transparent observation window for observing the situation inside the tank is fixedly connected to the side wall of the mixing tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the sludge is first diluted by stirring in the mixing tank, and then diluted by stirring with water to dilute the solid sludge. Then, large particles of sludge are crushed and cut by multiple crushing rollers in the mixing assembly, avoiding the phenomenon of power overload caused by garbage entanglement on the rollers. The sludge can be further diluted by using a spiral roller in conjunction with a stirring rod. The diluted sludge is then treated by adding chemical agents in the treatment tank. The treated clean water is then pumped back into the mixing assembly to form a circulation, which saves water resources and improves the mixing efficiency. Finally, the chemically treated sludge is heated in the heating tank to reduce the water content in the sludge and improve the efficiency of the next step of incineration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a sludge pretreatment equipment.

[0017] Figure 2 This is a schematic diagram of the internal structure of the treatment box in a sludge pretreatment device.

[0018] Figure 3 This is a schematic diagram of the internal structure of the mixing component of a sludge pretreatment device.

[0019] Figure 4 This is a schematic diagram of the drive wheel structure of a sludge pretreatment device;

[0020] Figure 5 This is a schematic diagram of the internal structure of a sludge pretreatment equipment.

[0021] Figure 6 A schematic diagram of the reagent tank structure of a sludge pretreatment device;

[0022] Figure 7 This is a schematic diagram of the internal structure of the reagent tank in a sludge pretreatment device.

[0023] In the diagram: 1. Processing box; 101. Support base; 102. Stepper motor; 103. Agitator roller; 104. Feed inlet; 105. Chemical tank; 106. Divider plate; 107. Feed pump; 108. High-pressure pipe; 109. Return water pump; 110. Sewage pump; 2. Agitator assembly; 201. Agitator box; 202. Feed inlet; 203. Servo motor; 204. Drive wheel; 205. Crushing roller; 206. Driven wheel; 207. Spiral roller; 208. Agitator rod; 209. Chassis; 210. Drive motor; 211. Gear disc; 212. Gear seat; 213. Flushing rod; 214. High-pressure nozzle; 215. Water inlet; 216. Sludge pump; 217. Slurry inlet pipe; 218. Transparent observation window; 3. Heating box; 301. Heater; 302. Heating rod. DETAILED DESCRIPTION

[0024] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0025] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0026] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0027] Reference Figures 1-7 This utility model provides two technical solutions:

[0028] Example 1:

[0029] A sludge pretreatment device includes a treatment box 1, a support base 101 fixedly connected to the bottom end of the treatment box 1, a stepper motor 102 fixedly connected to the top end of the treatment box 1, a stirring roller 103 for stirring sludge fixedly sleeved at the output end of the stepper motor 102, and a stirring assembly 2 for pretreated sludge is provided on one side of the treatment box 1.

[0030] The mixing assembly 2 includes a mixing tank 201 disposed on one side of the processing tank 1. A feeding port 202 for feeding solid sludge is provided at the top of the mixing tank 201. A servo motor 203 is fixedly connected to the inner wall of the mixing tank 201. A drive wheel 204 is fixedly sleeved at the output end of the servo motor 203. Multiple crushing rollers 205 for crushing the sludge are rotatably connected to the inner wall of the mixing tank 201. One of the crushing rollers 205 is fixedly sleeved at the output end of the servo motor 203. A driven wheel 206 is fixedly connected to the end of the crushing roller 205, and the driven wheel 206 meshes with the drive wheel 204 for transmission. A spiral roller 207 for stirring sludge is rotatably connected to the bottom of the mixing tank 201. Stirring rods 208 for stirring sludge are rotatably connected to both sides of the spiral roller 207 at the bottom of the mixing tank 201. A housing 209 is fixedly connected to the bottom of the mixing tank 201. A drive motor 210 is fixedly connected to the inner wall of the housing 209. The output end of the drive motor 210 is fixedly sleeved with the end of the spiral roller 207. A toothed disc 211 is fixedly sleeved on the outer wall of the output end of the drive motor 210. The toothed disc 211 meshes with two toothed seats 212. The toothed seats 212 are fixedly connected to the end of the stirring rods 208.

[0031] The mixing assembly 2 also includes a flushing rod 213 formed on the inner wall of the mixing tank 201. The flushing rod 213 is hollow inside and has multiple high-pressure nozzles 214 fixedly connected to its inner wall. The outer wall of the flushing rod 213 has a water inlet 215 for water intake.

[0032] A slurry inlet pipe 217 for filling sludge is fixedly connected to the outer wall of the mixing tank 201, and a transparent observation window 218 for observing the situation inside the tank is fixedly connected to the side wall of the mixing tank 201.

[0033] A sludge pump 216 is fixedly connected to the side wall of the mixing tank 201, and the output end of the sludge pump 216 is fixedly connected to the treatment tank 1. A return water pump 109 is fixedly connected to the outer wall of the treatment tank 1, and the output end of the return water pump 109 is fixedly connected to the mixing tank 201.

[0034] Specifically, the support base 101 at the bottom of the processing box 1 provides sufficient stability. The stepper motor 102 drives the stirring roller 103 to stir the sludge. The stirring assembly 2 can greatly dilute the sludge. Solid sludge can be directly fed in through the feeding port 202, and liquid sludge can be directly fed in through the slurry inlet pipe 217. The flange setting can accommodate more pipe openings. When the sludge slurry is pumped into the stirring assembly 2, the operation of the servo motor 203 first drives the drive wheel 204 and the driven wheel 206 to drive the crushing roller 205 to crush and cut the sludge. This can fully crush the gravel particles, garbage and other impurities in the sludge into fine particles, avoiding the blockage and entanglement of excessively large impurities. Then, the crushed particles are mixed by the crushing roller 205. As the muddy water flows in and falls, the flushing rod 213 inside the tank allows high-pressure water to flow through the inlet 215 and impact the crushing roller 205 via the high-pressure nozzle 214. This high-pressure flushing further improves the crushing effect. The rotation of the drive motor 210 then drives the toothed disc 211 and toothed seat 212 to rotate, which in turn drives the spiral roller 207 and stirring rod 208 to stir the mud in multiple directions, thoroughly diluting the small particles of sludge and water. The stirring situation inside the tank can be observed at any time through the transparent observation window 218. Once the dilution conditions are met, the sludge pump 216 is started to pump the diluted sludge into the treatment tank 1 for further stirring. After treatment in the treatment tank 1, the clean water is pumped back into the mixing tank 201 by the return water pump 109 for circulation, avoiding waste of water resources.

[0035] Example 2:

[0036] Based on Example 1:

[0037] The top of the processing box 1 is provided with an inlet 104 for adding chemicals. Therefore, a chemical tank 105 for storing various chemical chemicals is provided on one side of the processing box 1. Multiple partition plates 106 for dividing chemicals are fixedly connected to the inner wall of the chemical tank 105. A feeding pump 107 is provided at the top of the chemical tank 105. The output end of the feeding pump 107 is fixedly connected to a high-pressure pipe 108, and the end of the high-pressure pipe 108 is fixedly connected to the inlet 104.

[0038] A heating box 3 is provided on one side of the treatment box 1. A sewage pump 110 for pumping out sludge is fixedly connected to the outer wall of the treatment box 1. The output end of the sewage pump 110 is located inside the heating box 3. A heater 301 is fixedly connected to the side wall of the heating box 3. Multiple heating rods 302 that cooperate with the heater 301 for heating are fixedly connected to the bottom of the heating box 3.

[0039] Specifically, various chemical agents can be added through the inlet 104 at the top of the treatment tank 1. Different types of chemical agents are stored in the agent tank 105. The separator 106 ensures that they do not mix. According to the treatment requirements, the feed pump 107 is started to draw the specified chemical agents and pump them into the treatment tank 1 through the high-pressure pipe 108. The chemical agents are then mixed with the sludge slurry and reacted chemically with the sludge. The lighter water floats on the upper layer of the tank and is pumped back by the return water pump 109 for circulation. The heavier sludge is pumped into the heating tank 3 by the sewage pump 110. The heater 301 on the side wall of the heating tank 3 drives the heating rod 302 to heat the sludge and reduce its water content until it meets the requirements for incineration. This device can meet the requirements for pretreatment of solid and liquid sludge. The sludge is pre-mixed and diluted in mixing tank 201, and then the sludge is uniformly reacted through circulating mixing in treatment tank 1 in conjunction with the chemical reaction of chemical agents. Further, the water content is reduced in heating tank 3. The combination of these three processes improves the pretreatment effect of the sludge and accelerates the treatment efficiency. It should be noted that the motors mentioned in this article are all self-powered, and since this is existing technology, they will not be described in detail further.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge pretreatment device, comprising a treatment tank (1), characterized in that: The bottom end of the processing box (1) is fixedly connected to a support base (101), the top end of the processing box (1) is fixedly connected to a stepper motor (102), the output end of the stepper motor (102) is fixedly sleeved with a stirring roller (103) for stirring mud, and a stirring assembly (2) for pre-treated mud is provided on one side of the processing box (1). The mixing assembly (2) includes a mixing tank (201) disposed on one side of the processing tank (1). The top of the mixing tank (201) is provided with a feeding port (202) for feeding solid sludge. A servo motor (203) is fixedly connected to the inner wall of the mixing tank (201). A drive wheel (204) is fixedly sleeved on the output end of the servo motor (203). Multiple crushing rollers (205) for crushing sludge are rotatably connected to the inner wall of the mixing tank (201). One of the crushing rollers (205) is fixedly sleeved on the output end of the servo motor (203). A driven wheel (206) is fixedly connected to the end of the crushing roller (205), and the driven wheel (206) meshes with the drive wheel (204) for transmission. The bottom of the mixing tank (201) is rotatably connected to a spiral roller (207) for stirring sludge. The bottom of the mixing tank (201) is rotatably connected to two sides of the spiral roller (207) for stirring sludge. The bottom of the mixing tank (201) is fixedly connected to a housing (209). The inner wall of the housing (209) is fixedly connected to a drive motor (210). The output end of the drive motor (210) is fixedly sleeved with the end of the spiral roller (207). The outer wall of the output end of the drive motor (210) is fixedly sleeved with a toothed disc (211). The toothed disc (211) meshes with two toothed seats (212). The toothed seats (212) are fixedly connected to the end of the stirring rod (208).

2. The sludge pretreatment equipment according to claim 1, characterized in that: The stirring assembly (2) also includes a flushing rod (213) formed on the inner wall of the stirring tank (201). The flushing rod (213) is hollow inside and has multiple high-pressure nozzles (214) fixedly connected to its inner wall. The outer wall of the flushing rod (213) is provided with a water inlet (215) for water intake.

3. The sludge pretreatment equipment according to claim 1, characterized in that: The processing box (1) has an inlet (104) for dispensing chemicals at its top. Therefore, a chemical tank (105) for storing various chemical agents is provided on one side of the processing box (1). Multiple partition plates (106) for dividing chemicals are fixedly connected to the inner wall of the chemical tank (105). A feeding pump (107) is provided at the top of the chemical tank (105). A high-pressure pipe (108) is fixedly connected to the output end of the feeding pump (107), and the end of the high-pressure pipe (108) is fixedly connected to the inlet (104).

4. The sludge pretreatment equipment according to claim 1, characterized in that: A sludge pump (216) is fixedly connected to the side wall of the mixing tank (201), and the output end of the sludge pump (216) is fixedly connected to the treatment tank (1). A return water pump (109) is fixedly connected to the outer wall of the treatment tank (1), and the output end of the return water pump (109) is fixedly connected to the mixing tank (201).

5. The sludge pretreatment equipment according to claim 1, characterized in that: A heating box (3) is provided on one side of the treatment box (1). A sewage pump (110) for pumping out sludge is fixedly connected to the outer wall of the treatment box (1). The output end of the sewage pump (110) is located inside the heating box (3). A heater (301) is fixedly connected to the side wall of the heating box (3). A plurality of heating rods (302) that cooperate with the heater (301) for heating are fixedly connected to the bottom of the heating box (3).

6. The sludge pretreatment equipment according to claim 1, characterized in that: The mixing tank (201) is fixedly connected to an inlet pipe (217) for injecting sludge on its outer side wall, and a transparent observation window (218) for observing the situation inside the tank is fixedly connected to the side wall of the mixing tank (201).

Images