Front pretreatment device for reducing water content of sludge

Abstract

The utility model belongs to the field of sludge treatment, and particularly relates to a front pretreatment device for reducing the water content of sludge, which comprises a pyrohydrolysis reaction kettle, the top of the pyrohydrolysis reaction kettle is communicated and connected with a connecting valve, and the top of the connecting valve is communicated and connected with a preheating assembly. The middle of the bottom of the pyrohydrolysis reaction kettle is communicated with a crushing assembly; through the structural arrangement of the preheating assembly, when the pretreatment device is used, a solar heat collector continuously heats a heating medium in a water tank through solar energy, sludge is introduced into a preheating cylinder through an input pipe, and then a water pump is started; a heating medium heated in the solar heat collector is pumped into the cavity of the preheating cylinder through the hose A and then pumped into the cavity of the preheating cylinder through the hose B to preheat sludge, and the heating medium subjected to heat exchange in the cavity is squeezed back into the water tank of the solar heat collector through the return pipe, so that the pretreatment device can utilize solar energy to partially heat in the heating process; and the energy consumption of the device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment, specifically a pretreatment device for reducing the water content of sludge. Background Technology

[0002] Sludge treatment refers to the technical process of reducing, stabilizing, rendering harmless, and recycling water-containing solid waste generated during wastewater treatment. Pre-treatment devices for reducing sludge moisture content are equipment or processes used to improve sludge dewatering performance and reduce moisture content before sludge dewatering or drying. These devices alter sludge properties through physical, chemical, or biological methods, thereby improving subsequent dewatering efficiency and reducing energy consumption and costs.

[0003] In existing technologies, sludge needs to be pretreated before dewatering to improve its dewatering performance. Hot water hydrolysis can release bound water in the sludge under high temperature and pressure, improving its fluidity. However, existing pretreatment devices are not suitable for using solar energy for partial heating during the heating process, increasing the energy consumption of the device. At the same time, during the pretreatment process, sludge may clump together, affecting uneven heat transfer. Existing pretreatment devices are not suitable for breaking up clumps and exposing the sludge inside during the pretreatment process, reducing the pretreatment effect of the device. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the problems of inconvenience in utilizing solar energy for partial heating during the heating process and inconvenience in breaking up clumps during pretreatment, this utility model proposes a pretreatment device to reduce the water content of sludge.

[0005] The technical solution adopted by this utility model to solve its technical problem is: the pretreatment device for reducing the water content of sludge according to this utility model includes a hot water hydrolysis reactor, a connecting valve is connected through the top of the hot water hydrolysis reactor, a preheating component is connected through the top of the connecting valve, and a crushing component is connected through the middle of the bottom of the hot water hydrolysis reactor.

[0006] The preheating assembly includes a preheating cylinder that is connected to the top of the connecting valve. A return pipe is connected to one edge of the preheating cylinder. A solar collector is connected to one end of the return pipe. A flexible A hose is connected to the bottom of the solar collector. A water pump is connected to the bottom of the flexible A hose. A flexible B hose is connected to one end of the water pump. The preheating cylinder is connected to one end of the flexible B hose.

[0007] The crushing assembly includes a rotating rod rotatably connected to the middle of the bottom of the hot hydrolysis reactor. Connecting rods are rotatably connected to both ends of the rotating rod. Cutting blades are sleeved on the surface of the connecting rods. A transmission rod is fixedly connected to the bottom of the rotating rod. The bottom of the transmission rod is splinedly connected to the output end of a servo motor.

[0008] Preferably, a closed shell is connected through the surface of the rotating rod, and the bottom of the closed shell is fixedly connected to the inner surface of the hot water hydrolysis reactor.

[0009] Preferably, a motor box is fixedly connected to the bottom of the hot water hydrolysis reactor, and a servo motor is fixedly connected to the inner surface of the motor box.

[0010] Preferably, a frame plate is fixedly connected to the bottom of the solar collector, and a water pump is fixedly connected to the top edge of the frame plate.

[0011] Preferably, a base plate is fixedly connected to the bottom of the frame plate, a support frame is fixedly connected to the middle of the top of the base plate, and a hot water hydrolysis reactor is fixedly connected to the top of the support frame.

[0012] Preferably, a cavity for filling the heat medium is provided between the outer wall and the inner wall of the preheating cylinder, and an input pipe is connected through one side of the inner wall.

[0013] The advantages of this utility model are:

[0014] 1. Through the structural design of the preheating component, this utility model allows the solar collector to continuously heat the medium in the solar heating tank when using the pretreatment device. After the sludge is introduced into the preheating cylinder through the input pipe, the water pump is started to pump the heat medium heated in the solar collector through hose A and then through hose B into the cavity of the preheating cylinder to preheat the sludge. The heat medium that has undergone heat exchange in the cavity is then squeezed back into the water tank of the solar collector through the return pipe. This allows the pretreatment device to utilize solar energy for partial heating during the heating process, reducing the energy consumption of the device.

[0015] 2. This utility model, through the structural design of the crushing component, allows the preheated sludge to be fed into the hot hydrolysis reactor after the connecting valve is opened. The servo motor is then connected to a power source, causing the transmission rod to drive the rotating rod to rotate. The connecting rod then drives the cutting blade to rotate around the rotating rod as its axis. The cutting blade slides in the sludge, generating a reaction force that drives the cutting blade to rotate. This allows the serrated edges of the cutting blade to engage with and crush the clumps in the sludge. This enables the pretreatment device to break up the clumps and expose the sludge inside during the pretreatment process, thus improving the pretreatment effect of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the preheating component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the crushing component structure of this utility model.

[0021] In the diagram: 1. Hot water hydrolysis reactor; 2. Connecting valve; 3. Preheating assembly; 301. Preheating cylinder; 302. Return pipe; 303. Solar collector; 304. Hose A; 305. Water pump; 306. Hose B; 4. Crushing assembly; 401. Rotating rod; 402. Connecting rod; 403. Cutting blade; 404. Transmission rod; 405. Servo motor; 5. Enclosed shell; 6. Motor box; 7. Frame plate; 8. Base plate; 9. Support frame; 10. Input pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figures 1-4 As shown, a pretreatment device for reducing the water content of sludge includes a hot water hydrolysis reactor 1, a connecting valve 2 is connected through the top of the hot water hydrolysis reactor 1, a preheating component 3 is connected through the top of the connecting valve 2, and a crushing component 4 is connected through the middle of the bottom of the hot water hydrolysis reactor 1.

[0024] The preheating assembly 3 includes a preheating cylinder 301 that is connected to the top of the connecting valve 2. A return pipe 302 is connected to one edge of the preheating cylinder 301. A solar collector 303 is connected to one end of the return pipe 302. A flexible A 304 is connected to the bottom of the solar collector 303. A water pump 305 is connected to the bottom of the flexible A 304. A flexible B 306 is connected to one end of the water pump 305. A preheating cylinder 301 is connected to one end of the flexible B 306.

[0025] The crushing component 4 includes a rotating rod 401 rotatably connected to the middle of the bottom of the hot hydrolysis reactor 1. Connecting rods 402 are rotatably connected to both ends of the rotating rod 401. A cutting blade 403 is sleeved on the surface of the connecting rod 402. A transmission rod 404 is fixedly connected to the bottom of the rotating rod 401. The bottom of the transmission rod 404 is splinedly connected to the output end of the servo motor 405.

[0026] During operation, due to the structural design of the preheating component 3, when using this pretreatment device, the solar collector 303 continuously heats the medium in the solar heating tank. After the sludge is introduced into the preheating cylinder 301 through the input pipe 10, the water pump 305 is started. The heat medium heated in the solar collector 303 is pumped in through hose A 304 and then through hose B 306 into the cavity of the preheating cylinder 301 to preheat the sludge. The heat medium that has undergone heat exchange in the cavity is then squeezed back into the water tank of the solar collector 303 through the return pipe 302. This allows the pretreatment device to utilize solar energy for partial heating during the heating process, reducing the heat loss. The energy consumption of the device is reduced by the structure of the crushing component 4. After opening the connecting valve 2 to introduce the preheated sludge into the hot water hydrolysis reactor 1, the servo motor 405 is connected to the power supply and energized. This causes the transmission rod 404 to drive the rotating rod 401 to rotate, and through the connecting rod 402, it drives the cutting blade 403 to rotate around the rotating rod 401 as the axis of rotation. The cutting blade 403 slides in the sludge, and the resulting reaction force drives the cutting blade 403 to rotate. This allows the serrated edge of the cutting blade 403 to engage with and crush the clumps in the sludge. This enables the pretreatment device to break up the clumps and expose the sludge inside the clumps during the pretreatment process, thus improving the pretreatment effect of the device.

[0027] Furthermore, a closed shell 5 is connected through the surface of the rotating rod 401, and the bottom of the closed shell 5 is fixedly connected to the inner surface of the hot water hydrolysis reactor 1.

[0028] During operation, the enclosure 5 prevents sludge from seeping into the connection between the rotating rod 401 and the transmission rod 404 and affecting the operation of the crushing component 4.

[0029] Furthermore, a motor box 6 is fixedly connected to the bottom of the hot water hydrolysis reactor 1, and a servo motor 405 is fixedly connected to the inner surface of the motor box 6.

[0030] During operation, the motor box 6 can protect the servo motor 405 and fix the servo motor 405 below the hot water hydrolysis reactor 1.

[0031] Furthermore, a frame plate 7 is fixedly connected to the bottom of the solar collector 303, and a water pump 305 is fixedly connected to the top edge of the frame plate 7.

[0032] During operation, the frame plate 7 can support the solar collector 303 and the water pump 305.

[0033] Furthermore, a base plate 8 is fixedly connected to the bottom of the frame plate 7, a support frame 9 is fixedly connected to the middle of the top of the base plate 8, and a hot water hydrolysis reactor 1 is fixedly connected to the top of the support frame 9.

[0034] During operation, the support frame 9 can support the hot hydrolysis reactor 1 to a certain height, thus reserving space for the motor box 6.

[0035] Furthermore, a cavity for filling the heat medium is provided between the outer wall and the inner wall of the preheating cylinder 301, and an inlet pipe 10 is connected through one side of the inner wall.

[0036] During operation, the sludge can be introduced into the inner wall of the preheating cylinder 301 through the input pipe 10. The cavity allows the heat medium to preheat the sludge without contacting it.

[0037] Working principle: When using this pretreatment device, the solar collector 303 continuously heats the medium in the solar heating tank. After the sludge is introduced into the preheating cylinder 301 through the input pipe 10, the water pump 305 is started. The heat medium heated in the solar collector 303 is pumped into the cavity of the preheating cylinder 301 through the A hose 304 and then through the B hose 306 to preheat the sludge. The heat medium that has undergone heat exchange in the cavity is squeezed back into the water tank of the solar collector 303 through the return pipe 302. After opening the connecting valve 2 to introduce the preheated sludge into the hot hydrolysis reactor 1, the servo motor 405 is connected to the power supply and powered on. This causes the transmission rod 404 to drive the rotating rod 401 to rotate. Through the connecting rod 402, the cutting blade 403 rotates around the rotating rod 401 as the axis of rotation. The cutting blade 403 slides in the sludge, and the resulting reaction force drives the cutting blade 403 to rotate, so that the serrated edge of the cutting blade 403 can be inserted into and crush the clumps in the sludge.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment device for reducing the moisture content of sludge, characterized in that: The device includes a hot water hydrolysis reactor (1), a connecting valve (2) is connected through the top of the hot water hydrolysis reactor (1), a preheating component (3) is connected through the top of the connecting valve (2), and a crushing component (4) is connected through the middle of the bottom of the hot water hydrolysis reactor (1). The preheating component (3) includes a preheating cylinder (301) that is connected to the top of the connecting valve (2). A return pipe (302) is connected to one edge of the preheating cylinder (301). A solar collector (303) is connected to one end of the return pipe (302). A flexible A (304) is connected to the bottom of the solar collector (303). A water pump (305) is connected to the bottom of the flexible A (304). A flexible B (306) is connected to one end of the water pump (305). A preheating cylinder (301) is connected to one end of the flexible B (306). The crushing component (4) includes a rotating rod (401) rotatably connected to the middle of the bottom of the hot water hydrolysis reactor (1). The two ends of the rotating rod (401) are rotatably connected to connecting rods (402). A cutting blade (403) is sleeved on the surface of the connecting rod (402). A transmission rod (404) is fixedly connected to the bottom of the rotating rod (401). The bottom spline of the transmission rod (404) is connected to the output end of the servo motor (405).

2. The pretreatment device for reducing the moisture content of sludge according to claim 1, characterized in that: The rotating rod (401) is connected to a closed shell (5) through the surface, and the bottom of the closed shell (5) is fixedly connected to the inner surface of the hot water hydrolysis reactor (1).

3. The pretreatment device for reducing the moisture content of sludge according to claim 1, characterized in that: The bottom of the hot water hydrolysis reactor (1) is fixedly connected to a motor box (6), and a servo motor (405) is fixedly connected to the inner surface of the motor box (6).

4. The pretreatment device for reducing the moisture content of sludge according to claim 1, characterized in that: A frame plate (7) is fixedly connected to the bottom of the solar collector (303), and a water pump (305) is fixedly connected to the top edge of the frame plate (7).

5. A pretreatment device for reducing the moisture content of sludge according to claim 4, characterized in that: The bottom of the frame plate (7) is fixedly connected to a base plate (8), and a support frame (9) is fixedly connected to the middle of the top of the base plate (8). A hot water hydrolysis reactor (1) is fixedly connected to the top of the support frame (9).

6. The pretreatment device for reducing the moisture content of sludge according to claim 1, characterized in that: A cavity for filling the heat medium is provided between the outer wall and the inner wall of the preheating cylinder (301), and an input pipe (10) is connected through one side of the inner wall.

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