Integrated thermal hydrolysis and crushing device

Abstract

An integrated thermal hydrolysis and crushing device, comprising a thermal hydrolysis unit (1), a crushing unit (2) and a speed change unit (3). The thermal hydrolysis unit is provided with a transmission shaft (13); a variable-pitch spiral blade (18) is additionally mounted on the shaft; the crushing unit is provided with a spiral cutting blade (23), and the bottom of the crushing unit is additionally provided with a wastewater filter screen (24) and a discharging port (26); and by means of the engagement of a driving wheel (31), a driven wheel (32) and a gear (33) of the speed change unit, rotation of the thermal hydrolysis unit and the crushing unit at different speeds and in different directions is realized. A thermal hydrolysis stage and a subsequent crushing stage are integrated into the device, thereby improving the material treatment efficiency and the compactness of the device.

Description

A thermal hydrolysis and crushing integrated device Technical Field

[0001] The invention relates to the field of material crushing and pretreatment, and in particular to a thermal hydrolysis crushing integrated device. Background Art

[0002] Thermal hydrolysis and crushing are important process steps in the reduction and resource utilization of solid wastes such as agricultural and forestry wastes and organic garbage. Thermal hydrolysis generally refers to the use of water / steam at a certain temperature to cook biomass under a certain pressure to promote the decomposition of macromolecular materials, which is beneficial for the organic matter therein to further react with microorganisms and accelerate the reaction rate. Existing thermal hydrolysis devices are mostly kettle-type, which usually consume a large amount of high-temperature and high-pressure steam and are relatively expensive. In addition, existing technologies often separate thermal hydrolysis pretreatment and crushing into two equipment links, which is not conducive to the continuity of material reaction, increases the complexity of the equipment and processing links, and reduces production efficiency.

[0003] In response to the above problems, the present invention proposes an integrated thermal hydrolysis and crushing device, which integrates the thermal hydrolysis pretreatment of materials and the subsequent crushing process into one device, thereby improving the material processing efficiency and the compactness of the equipment.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology and to provide an integrated thermal hydrolysis and crushing device.

[0006] The technical solution of the present invention is:

[0007] A thermal hydrolysis and crushing integrated device includes a thermal hydrolysis unit, a crushing unit, and a speed change unit. The thermal hydrolysis unit is composed of a material supply bin, an electric motor, a transmission shaft, a vent, high-pressure steam, a thermal insulation layer, an inner shell, variable-pitch spiral blades, and an outer shell. The crushing unit includes a hollow shaft, a bearing, spiral blades, a sewage filter, a variable-diameter shaft, and a discharge port. The speed change unit includes a driving wheel, a driven wheel, a gear, a fixed frame, a spline, and a key.

[0008] A transmission shaft is set below the material supply bin, and the left side of the transmission shaft is connected to the motor, on which a variable pitch spiral blade is installed. The transmission shaft runs through the entire device, and there is a gradually shrinking diameter shaft at the end of the thermal hydrolysis unit;

[0009] The shell of the thermal hydrolysis unit is provided with a plurality of vent holes, which penetrate the shell, the insulation layer and the inner shell, and each vent hole is connected to the external high-pressure steam;

[0010] The hollow shaft is cylindrical and is installed on the reducing shaft through a bearing. A spiral blade is installed on the hollow shaft. The outer shell of the crushing unit is installed with a sewage filter and a discharge port. The driving wheel is connected to the end of the reducing shaft through a flat key and meshes with the driven wheel. The driven wheel is fixed on the fixed frame and meshes with the gear. The gear and the hollow shaft are connected through a spline. Beneficial effects:

[0011] 1. The present invention utilizes water / steam to carry out thermal hydrolysis reaction, which significantly saves water consumption and also reduces waste liquid discharge during the treatment process;

[0012] 2. The present invention combines the thermal hydrolysis and crushing processes of materials, reducing the cost of pretreatment equipment and enhancing the continuity of the material processing process;

[0013] 3. The device of the present invention integrates the thermal hydrolysis pretreatment and crushing of materials, reducing process energy loss and improving processing efficiency;

[0014] 4. The device of the present invention can realize the different speed rotation of the thermal hydrolysis unit and the crushing unit, and can also rotate in different directions, thereby enhancing the crushing effect of the crushing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a thermal hydrolysis and crushing integrated device;

[0016] Figure 2 is a cross-sectional view of the connection structure between the driving wheel and the variable diameter shaft;

[0017] Figure 3 is a cross-sectional view of the connection between the driven wheel and the gear along the AA line. DETAILED DESCRIPTION

[0018] For the sake of clarity, the direction in which the raw material moves forward is defined as the end.

[0019] A thermal hydrolysis and crushing integrated device includes a thermal hydrolysis unit 1, a crushing unit 2, and a speed change unit 3. The thermal hydrolysis unit 1 is composed of a material supply bin 11, a motor 12, a transmission shaft 13, a vent 14, high-pressure steam 15, an insulation layer 16, an inner shell 17, variable-pitch spiral blades 18, and an outer shell 19. The crushing unit 2 includes a hollow shaft 21, a bearing 22, spiral blades 23, a sewage filter 24, a variable-diameter shaft 25, and a discharge port 26. The speed change unit 3 includes a driving wheel 31, a driven wheel 32, a gear 33, a fixing frame 34, a spline 35, and a key 36.

[0020] A transmission shaft 13 is provided below the material supply bin 11. The left side of the transmission shaft 13 is connected to the motor 12, on which a variable pitch spiral blade 18 is mounted. The transmission shaft 13 runs through the entire device, and there is a gradually shrinking diameter shaft 25 at the end of the thermal hydrolysis unit 1.

[0021] The outer shell 19 of the thermal hydrolysis unit 1 is provided with a plurality of vent holes 14 , which penetrate the outer shell 19 , the insulation layer 16 and the inner shell 17 , and each vent hole 14 is connected to the external high-pressure steam 15 ;

[0022] The hollow shaft 21 is cylindrical and is mounted on the reducing shaft 25 through a bearing 22. A spiral blade 23 is installed on the hollow shaft 21. The housing 19 of the crushing unit 2 is installed with a sewage filter 24 and a discharge port 26. The driving wheel 31 is connected to the end of the reducing shaft 25 through a flat key 36 and meshes with the driven wheel 32. The driven wheel 32 is fixed on the fixing frame 34 and meshes with the gear 33. The gear 33 is connected to the hollow shaft 21 through a spline 35.

[0023] Referring to Figures 1 and 2, the thermal hydrolysis unit 1, crushing unit 2, and speed change unit 3 are arranged sequentially along the direction of feedstock movement. A reducing shaft 25 is coaxially fixedly connected to the drive shaft 13. A hollow shaft 21 is rotatably mounted on the reducing shaft 25 via a bearing 22 and axially extends through the crushing unit 2, the fixed frame 34, and the gear 33. The reducing shaft 25 axially extends through the crushing unit 2, the fixed frame 34, the gear 33, and the driving wheel 31. The distal end of the reducing shaft 25 extends from the distal end of the hollow shaft 21. The driven wheels 32 include a first driven wheel 32-a, a second driven wheel 32-b, and a third driven wheel 32-c. These first, second, and third driven wheels 32-b, 32-c are fixed to the fixed frame 34 at intervals along the periphery of the gear 33. The driving wheel 31 simultaneously meshes with the first, second, and third driven wheels 32-a, 32-b, and 32-c, respectively, on the outer sides away from the gear 33. Under the action of the motor 12, the reducing shaft 25 drives the driving wheel 31 to rotate via the flat key 36. The driving wheel 31 drives the driven wheel 32 to rotate in the same direction. The driven wheel 32, which is arranged on the periphery of the gear 33, drives the gear 33 to rotate in the opposite direction. Ultimately, the hollow shaft 21 and the transmission shaft 13, which are connected to the gear 33 via the spline 35, rotate in opposite directions. With this arrangement, the thermal hydrolysis unit 1 and the crushing unit 2 can rotate at different speeds and in opposite directions, thereby enhancing the crushing effect of the spiral blade 23.

[0024] The outer shell 19 of the thermal hydrolysis unit 1 and the crushing unit 2 is covered with a complete insulation layer 16 to enclose the entire device inner shell 17.

[0025] The high-pressure steam 15 pumped into the vent hole 14 may also be other solvent vapors, including but not limited to inorganic or organic solvents such as water and ethanol.

[0026] The variable pitch spiral blades 18 can not only transport the material to participate in the thermal hydrolysis, but also form extrusion between the blades to achieve the effect of dehydrating the material.

[0027] The meshing manner of the driven wheel 32 and the gear 33 is not limited to that shown in the figure, and they can also be connected in other ways to achieve the function.

[0028] The raw materials enter the device from the material supply bin 11, and the motor 12 drives the transmission shaft 13 to rotate. The variable-pitch spiral blades 18 on it slowly and continuously transport the raw materials forward. At the same time, high-pressure steam 15 enters the device through the vent 14 and mixes with the raw materials transported by the variable-pitch spiral blades 18 to perform thermal hydrolysis. The material after thermal hydrolysis continues to move forward and is crushed by the spiral blades 23. The liquid part is discharged and collected through the sewage filter 24, and the crushed material particles are collected through the discharge port 26.

Claims

1. A thermal hydrolysis crushing integrated device, characterized in that: It includes a thermal hydrolysis unit, a crushing unit and a speed change unit, wherein the thermal hydrolysis unit is composed of a material supply bin, a motor, a transmission shaft, a vent, high-pressure steam, a thermal insulation layer, an inner shell, variable-pitch spiral blades and an outer shell; the crushing unit includes a hollow shaft, a bearing, a spiral blade, a sewage filter, a variable-diameter shaft and a discharge port; the speed change unit includes a driving wheel, a driven wheel, a gear, a fixed frame, a spline and a flat key; A transmission shaft is arranged below the material supply bin, the left side of the transmission shaft is connected to the motor, and a variable pitch spiral blade is installed on the transmission shaft. The transmission shaft runs through the entire device, and there is a gradually reduced diameter shaft at the end of the thermal hydrolysis unit; The outer shell of the thermal hydrolysis unit is provided with a plurality of vent holes, the vent holes penetrate the outer shell, the insulation layer and the inner shell, and each vent hole is connected to the external high-pressure steam; The hollow shaft is cylindrical and is installed on the reducing shaft through a bearing. A spiral blade is installed on the hollow shaft. The outer shell of the crushing unit is installed with a sewage filter and a discharge port. The driving wheel is connected to the end of the reducing shaft through a flat key and meshes with the driven wheel. The driven wheel is fixed on the fixed frame and meshes with the gear. The gear and the hollow shaft are connected through a spline.

2. A thermal hydrolysis and crushing integrated device according to claim 1, characterized in that: The outer shells of the thermal hydrolysis unit and the crushing unit are covered with a complete insulation layer to wrap the entire inner shell of the device.

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