Wet garbage pulping and squeezing integrated device

Abstract

The utility model relates to a wet garbage pulping and squeezing integrated device, which is characterized in that a bin body assembly comprises a closed box body for accommodating materials, a steam pipeline and a wedge-shaped guide plate, a pulping area and a squeezing area are arranged in the box body, a feed port and a water replenishing interface are arranged on the front side of the top of the box body, a drainage interface is arranged on the middle rear side of the bottom of the box body, and a discharge port is arranged at the tail part of the box body; the steam pipeline comprises a steam inlet pipe, a transverse pipe and at least two branch pipes, the wedge-shaped flow guide plate is installed at the bottom of the box body and located at the junction of the pulping area and the squeezing area, the stirring and squeezing mechanism comprises a main shaft, a stirring paddle, a spiral blade and two mounted bearings, the main shaft is transversely installed on the two mounted bearings, and the stirring paddle is installed on the main shaft. The main shaft is provided with a plurality of stirring paddles in the pulping area and spiral blades in the squeezing area, and the stirring paddles are uniformly distributed in the radial direction and the axial direction of the main shaft; the driving mechanism comprises a variable frequency motor and a speed reducer, and the output side of the speed reducer is connected with the spindle. The pulping and squeezing functions are integrated, pollution is reduced, the structure is simple, and operation is efficient and stable.

Description

Technical Field

[0001] The utility model relates to a wet garbage pulping and squeezing integrated device, belonging to the technical field of wet garbage mechanical pretreatment. Background Art

[0002] Wet garbage contains large amounts of food residue, as well as small amounts of plant fibers, plastics, and other debris. A common method for treating wet garbage is mechanical pretreatment followed by anaerobic fermentation. Due to its high moisture content and organic matter content, wet garbage is well-suited for advanced treatment using wet anaerobic fermentation. To transform wet garbage into a suitable raw material for wet anaerobic fermentation, a pretreatment process combining pulping and dehydration by pressing is often employed. This involves using a pulping machine to pulp and homogenize the wet garbage, followed by a press to separate the solids from the liquid, removing fibers and debris. The remaining highly concentrated organic slurry is then fed into the wet anaerobic fermentation system.

[0003] The existing pulping and pressing equipment consists of two independently operated mechanical devices. Wet garbage is first hoisted into the pulping machine via a conveyor, and the pulp is then conveyed to the pressing machine via a secondary hoist. Since the wet garbage becomes slurry with increased fluidity, the lifting angle of the secondary conveying equipment is limited, making equipment layout optimization difficult and requiring a large footprint. Furthermore, the multiple pulp transfers between the pulping machine, secondary conveying equipment, and pressing machine increase the risk of pulp leakage, require stringent secondary pollution control measures, and result in low operating efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a wet garbage pulping and squeezing integrated device which integrates pulping and squeezing functions, reduces pollution, has a simple structure, and operates efficiently and stably.

[0005] The technical solution of the utility model to achieve the above-mentioned purpose is: a wet garbage pulping and squeezing integrated device, characterized by comprising a bin assembly, a stirring and squeezing mechanism and a driving mechanism;

[0006] The silo assembly includes a sealed box for accommodating materials, a steam pipeline and a wedge-shaped guide plate. The box has a pulping area and a pressing area, and the box is provided with support seats on the end plates on both sides; the top of the box is provided with a feed port and a water supply interface on the front side, the bottom of the box is provided with a drainage interface on the middle and rear sides, and a discharge port at the tail, and a screen is provided at the drainage interface of the box; the steam pipeline includes a steam inlet pipe, a cross pipe and at least two branch pipes, one end of the steam inlet pipe passes through the top of the box for connection with an external steam pipe, and the other end is connected to the cross pipe provided on the upper part of the box, and the branch pipe with multiple small holes is connected to the cross pipe; the wedge-shaped guide plate is installed at the bottom of the box and is located at the junction of the pulping area and the pressing area. The wedge-shaped guide plate has a guide surface inclined backward and a blocking surface at the rear end for blocking the backflow of the liquid phase after pressing;

[0007] The stirring and pressing mechanism includes a main shaft, a stirring paddle, a spiral blade and a bearing seat. The bearing seat is installed on a support seat. The main shaft is installed horizontally on two bearing seats. The main shaft is provided with multiple stirring paddles in the pulping area and spiral blades in the pressing area. The stirring paddles are evenly distributed along the radial and axial directions of the main shaft.

[0008] The driving mechanism includes a variable frequency motor and a reducer. The reducer is installed on the support seat, and the variable frequency motor is installed on the reducer. The output side of the variable frequency motor is connected to the input side of the reducer, and the output side of the reducer is connected to the main shaft.

[0009] The utility model relates to an integrated device for pulping and squeezing wet garbage. The wet garbage enters from the feed port at the top of the box body, and is discharged from the discharge port at the bottom after pulping and squeezing. The wet garbage enters and exits along the diagonal line of the box body, so it can effectively undergo the pulping and squeezing process and effectively avoid short-circuiting. The water supply port provided on the top of the box body of the utility model can replenish process water for wet garbage pulping, facilitate the adjustment of the moisture content of the wet garbage to ensure the pulping effect of the wet garbage, and replenish steam for wet garbage pulping under low temperature conditions through the steam pipeline to prevent high-water-content wet garbage from freezing and grease solidification due to low temperature, thereby ensuring stable operation of the device and ensuring the pulping and squeezing effect. The box of the utility model is provided with a pulping area and a pressing area, and the main shaft is provided with a stirring paddle corresponding to the pulping area and a spiral blade in the pressing area. Therefore, the stirring paddle is used to homogenize, stir and pulp the wet garbage, and the spiral pressing principle is used to squeeze and dehydrate the pulp after pulping. The pulp during squeezing is discharged from the drainage interface and the solid residue is discharged from the discharge port. The wedge-shaped guide plate facilitates the pulp after pulping to enter the pressing area, and at the same time can effectively prevent the liquid phase after squeezing from flowing back to the pulping area, which can maximize the pulping and squeezing effect. The utility model integrates the pulping and squeezing functions into one, eliminating the secondary lifting and transportation between the two, reducing pollution, saving land and reducing overall investment without reducing the original process function. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a structural schematic diagram of the wet garbage pulping and squeezing integrated device of the present invention.

[0012] Figure 2 yes Figure 1 Schematic diagram of the top view structure.

[0013] Figure 3 yes Figure 1 AA cross-sectional structure diagram.

[0014] Among them: 1-box, 1-1-feed port, 1-2-water supply port, 1-3-deodorization port, 1-4-inspection door, 1-5-drainage port, 1-6-discharge port, 2-main shaft, 3-mixing paddle, 4-spiral blade, 5-support seat, 6-bearing with seat, 7-reducer, 8-frequency conversion motor, 9-bracket, 10-support leg, 11-wedge-shaped guide plate, 12-steam inlet pipe, 13-cross pipe, 14-branch pipe. DETAILED DESCRIPTION

[0015] See Figures 1 to 3 As shown, the utility model is a wet garbage pulping and squeezing integrated device, which includes a bin body assembly, a driving mechanism and a stirring and squeezing mechanism.

[0016] See Figures 1 to 3 As shown, the silo assembly of the present invention includes a sealed box 1 for accommodating materials, a steam pipeline, and a wedge-shaped guide plate 11. The box 1 is made of high-quality stainless steel and high-manganese steel, which can effectively prevent equipment corrosion and wear and extend its service life. The box 1 has a pulping area and a pressing area. The box 1 is fixed with support bases 5 on the end plates on both sides, and the drive mechanism and the stirring and pressing mechanism are installed through the support bases 5. Figures 1 to 3 As shown, a feed port 1-1 and a water supply interface 1-2 are provided on the front side of the top of the box body 1 of the present invention, a drainage interface 1-5 is provided on the middle and rear side of the bottom of the box body 1, and a discharge port 1-6 is provided at the tail. A screen is provided at the drainage interface 1-5 of the box body 1, and wet garbage enters the box body 1 from the feed port 1-1 through the lifting and conveying equipment. The water supply interface 1-2 on the top of the box body 1 is connected to the external process water pipe. When the moisture content of the wet garbage is too low and affects the pulping effect, process water is sprayed into the box body 1 through the water supply interface 1-2 to adjust the moisture content of the wet garbage to the optimal range to ensure the pulping effect of the wet garbage. The slurry after pulping flows out from the drainage interface 1-5 after filtration, and the solid residue after squeezing is discharged from the discharge port 1-6.

[0017] The drainage interface 1-5 of the box body 1 of the present invention is provided with a connecting flange, which is convenient for connection and disassembly with an external drainage pipe. The drainage interface 1-5 of the present invention is provided with a circumferential groove and two axial guide grooves communicating with the circumferential groove. The screen has an outer edge, and the outer edge has two protruding ribs. The two ribs pass through the corresponding axial guide grooves and are arranged in the circumferential groove after rotation. The aperture of the screen is between 5 and 6 mm. Therefore, the slurry enters the drainage pipe after being filtered by the screen and enters the subsequent processing steps. At the same time, it can also facilitate the disassembly and installation of the screen, and the screen is quickly maintained and replaced while maintaining a good filtering effect.

[0018] See Figures 1 to 3As shown, the steam pipeline of the present invention includes a steam inlet pipe 12, a transverse pipe 13 and at least two branch pipes 14. One end of the steam inlet pipe 12 passes through the top of the box body 1 for connection with an external steam pipe, and the other end is connected to the transverse pipe 13 arranged on the upper part of the box body 1. The branch pipe 14 with multiple small holes is connected to the transverse pipe 13 to supplement steam for wet garbage pulping under low temperature conditions. For example, when the external ambient temperature is lower than 5°C, the external steam is passed through the steam inlet pipe 12 and the transverse pipe 13 to each branch pipe 14 and into the box body 1. The wet garbage in the box body 1 is heated by steam to avoid freezing of the wet garbage and solidification of grease, thereby ensuring the pulping and pressing effect of the wet garbage.

[0019] See Figure 3 As shown, the branch pipes 14 of the box body 1 of the present invention are arranged from top to bottom along the inner wall of the box body 1, and the center distance between two branch pipes 14 is between 500 and 600 mm, such as the center distance between two branch pipes 14 is 550 mm. The branch pipes 14 are located at the lower part of the center plane of the main shaft 2 and have multiple small holes evenly distributed toward one side of the main shaft 2. The center distance between two small holes on the branch pipes 14 is between 15 and 20 mm, and the hole diameter is between 8 and 12 mm. The wet garbage in the box body 1 is quickly and evenly heated through the multiple small holes.

[0020] See Figure 1 、 2 As shown, the wedge-shaped guide plate 11 of the present invention is installed at the bottom of the box body 1 and is located at the junction of the pulping area and the pressing area. The wedge-shaped guide plate 11 has a guide surface that is tilted backward and a blocking surface at the rear end to prevent the liquid phase from flowing back after pressing. The wedge-shaped guide plate 11 facilitates the entry of the pulping slurry into the pressing area after pulping, while also preventing the liquid phase from flowing back into the pulping area after pressing. The wedge-shaped guide plate 11 of the present invention is located in front of the drainage interface 1-5. The angle of the wedge-shaped guide plate 11 is between 20 and 35 degrees, such as the angle of the wedge-shaped guide plate 11 is 30 degrees.

[0021] See Figures 1 to 3 As shown, the stirring and squeezing mechanism of the present invention includes a main shaft 2, a stirring paddle 3, a spiral blade 4 and a seat bearing 6. The seat bearing 6 is installed on the support seat 5, and the main shaft 2 is horizontally installed on two seat bearings 6. The main shaft 2 is located in the pulping area and is provided with multiple stirring paddles 3, and is located in the squeezing area and is provided with spiral blades 4. The stirring paddles 3 are evenly distributed along the radial and axial directions of the main shaft 2. The wet garbage is homogenized, stirred and pulped by a plurality of stirring paddles 3, and the spiral blades 4 squeeze and dehydrate the pulp after pulping. The pulp during squeezing is discharged from the drainage interface 1-5 and the solid residue is discharged from the discharge port 1-6. During operation, the material is slowly moved toward the discharge port 1-6 under the action of the stirring paddle 3 and the spiral blade 4, which can avoid the sedimentation of wet garbage in the box and maximize the pulping and squeezing effects.

[0022] See Figures 1 to 3As shown, the distance h1 between the end of the stirring paddle 3 and the box wall of the utility model is between 100 and 250 mm, and the distance h2 between the outer periphery of the spiral blade 4 and the box wall is between 200 and 400 mm, which can avoid the dead zone phenomenon in pulping and pressing in the box body 1.

[0023] See Figure 1 、 2 As shown, the drive mechanism of the present invention includes a variable frequency motor 8 and a reducer 7. The reducer 7 is mounted on the support base 5, and the variable frequency motor 8 is mounted on the reducer 7. The output side of the variable frequency motor 8 is connected to the input side of the reducer 7, and the output side of the reducer 7 is connected to the main shaft 2. The variable frequency motor 8 can adjust the speed of the main shaft 2 according to the properties of wet garbage and the different requirements of pulping and pressing. The speed is controlled within the range of 25 to 50 rpm, and the reducer 7 provides sufficient torque for the rotation of the main shaft 2.

[0024] See Figures 1 to 3 As shown, the top of the box body 1 of the present invention is provided with a deodorizing interface 1-3 and an inspection door 1-4 in the middle. The inspection door 1-4 is sealed and installed at the inspection port of the box body 1. The deodorizing interface 1-3 is connected to the external odor collection system through a pipeline, so that a slight negative pressure is formed inside the box body 1, and the odor generated by the wet garbage is sent to the odor treatment system. The malodorous gas generated during operation can be collected and centrally treated. After treatment, the odor meets the discharge standard, ensuring that the odor in the box body 1 does not overflow and that there is no odor outside the device. Since the inspection port of the present invention is sealed under normal working conditions, the inspection door 1-4 is opened during device maintenance and inspection, which facilitates the entry and exit of operation and maintenance personnel and the replacement of parts. At the same time, the deodorizing interface 1-3 maintains negative pressure suction to replace the air inside the box body. When the operation and maintenance personnel enter the box body 1 to perform maintenance work, sufficient fresh air is ensured to ensure the safety of the maintenance work.

[0025] See Figures 1 to 3 As shown, the box body 1 of the present invention is fixed on a bracket 9, and the bracket 9 is mounted on a plurality of height-adjustable legs 10. The number of legs 10 can be increased or decreased in the horizontal direction, and the number and height can be adjusted according to different sites and working conditions.

Claims

1. A wet garbage pulping and squeezing integrated device, characterized by: It includes a bin assembly, a stirring and squeezing mechanism, and a driving mechanism; The silo assembly comprises a sealed box (1) for accommodating materials, a steam pipeline and a wedge-shaped guide plate (11). The box (1) has a pulping area and a pressing area, and the box (1) is provided with a support seat (5) on the end plates on both sides; the top of the box (1) is provided with a feed port (1-1) and a water supply port (1-2) on the front side, the bottom of the box (1) is provided with a drainage port (1-5) on the middle and rear side, and a discharge port (1-6) at the tail, and a screen is provided at the drainage port (1-5) of the box (1); the steam pipeline comprises a steam inlet pipe (12), a transverse pipe (13) and at least two branch pipes (14), one end of the steam inlet pipe (12) passes through the top of the box body (1) for connection with an external steam pipe, and the other end is connected to and communicates with the transverse pipe (13) arranged on the upper part of the box body (1), and the branch pipe (14) provided with a plurality of small holes is connected to and communicates with the transverse pipe (13); the wedge-shaped guide plate (11) is installed at the bottom of the box body (1) and is located at the junction of the pulping area and the pressing area, and the wedge-shaped guide plate (11) has a guide surface inclined backward and a blocking surface at the rear end for blocking the backflow of the liquid phase after pressing; The stirring and pressing mechanism comprises a main shaft (2), a stirring paddle (3), a spiral blade (4) and a seat bearing (6), the seat bearing (6) is mounted on a support seat (5), the main shaft (2) is horizontally mounted on two seat bearings (6), the main shaft (2) is provided with a plurality of stirring paddles (3) in the pulping area, and is provided with a spiral blade (4) in the pressing area, and the stirring paddles (3) are evenly distributed along the radial and axial directions of the main shaft (2); The driving mechanism includes a variable frequency motor (8) and a reducer (7), wherein the reducer (7) is mounted on the support base (5), the variable frequency motor (8) is mounted on the reducer (7), and the output side of the variable frequency motor (8) is connected to the input side of the reducer (7), and the output side of the reducer (7) is connected to the main shaft (2).

2. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: The wedge-shaped guide plate (11) is located in front of the drainage interface (1-5), and the included angle of the wedge-shaped guide plate (11) is between 20° and 35°.

3. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: The transverse pipe (13) is arranged in the pulping area, and the branch pipes (14) are arranged from top to bottom along the inner wall of the box body (1), and the center distance between two branch pipes (14) is between 500 and 600 mm. The branch pipes (14) are located at the lower part of the center plane of the main shaft (2) and have multiple small holes evenly distributed toward one side of the main shaft (2).

4. The wet garbage pulping and squeezing integrated device according to claim 3, characterized in that: The center distance between the two small holes on the branch pipe (14) is between 15 and 20 mm, and the hole diameter is between 8 and 12 mm.

5. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: The drainage interface (1-5) of the box (1) is provided with a connecting flange, and the drainage interface (1-5) is provided with a circumferential groove and two axial guide grooves communicating with the circumferential groove. The screen has an outer edge, and the outer edge has two outwardly protruding ribs. The two ribs pass through the corresponding axial guide grooves and are arranged in the circumferential groove after rotation. The aperture of the screen is between 5 and 6 mm.

6. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: The distance h1 between the end of the stirring paddle (3) and the box wall is between 100 and 250 mm, and the distance h2 between the outer periphery of the spiral blade (4) and the box wall is between 200 and 400 mm.

7. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: A deodorizing interface (1-3) and an inspection door (1-4) are provided in the middle of the top of the box body (1), and the inspection door (1-4) is sealed and installed at the inspection opening of the box body (1).

8. The wet garbage pulping and squeezing integrated device according to claim 1, characterized in that: The box body is fixed on a bracket (9), and the bracket (9) is mounted on a plurality of height-adjustable legs (10), and the number of the legs (10) can be increased or decreased in the transverse direction.

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