A granulator

Abstract

A granulator comprises a frame, a material bin and a stirring main shaft, further comprising: a stirring main shaft sealing mechanism arranged on the stirring main shaft to provide airflow sealing protection for the stirring main shaft and equipped with a pressure increasing unit to increase the air pressure entering the shaft chamber; a kettle body lifting and overturning mechanism arranged on the frame to lift the material bin when granulation and finished granulation are performed to make the stirring main shaft enter and leave the material bin, and to overturn and reset the material bin when the granules are separated from the material bin; and a stirring main shaft spraying mechanism arranged in the stirring main shaft to clean the finished granulation material bin and to spray water in all directions while increasing the water flow rate when the water flows. The granulator has the beneficial effects that the airflow sealing gas of the stirring main shaft is pressurized to ensure cleaning during production, the overturning of the material bin makes all the granules quickly and completely separated from the material bin, the later cleaning is facilitated, and the provided cleaning effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pharmaceutical equipment, and particularly relates to a granulator. BACKGROUND

[0002] The granulator mainly comprises a feeding system, a stirring system, a granulating system, a transmission system and a lubricating system, and is widely applied in the pharmaceutical industry, the chemical industry and the food industry.

[0003] Publication No. CN203730763U discloses a wet granulator main shaft compressed air blowing sealing device, which comprises a pressure regulating valve, the pressure regulating valve is connected with a pneumatic joint through a pipeline, the pneumatic joint is installed on the side wall of a compressed air flow guide flange, the compressed air flow guide flange is sleeved on the outer periphery of a main shaft sleeve, the top of the compressed air flow guide flange is connected with a positioning sealing flange, a gas flow guide distribution ring and a combined sealing ring are sequentially arranged between the positioning sealing flange and the main shaft sleeve from top to bottom, the compressed air flow guide flange, the positioning sealing flange and the gas flow guide distribution ring are internally provided with a gas flow channel, and a VD sealing ring is arranged between the main shaft and a stirring paddle connected with the main shaft. Although the granulator can realize the cleaning and sealing of the device through the compressed air flow sealing, the granulator has certain defects, mainly reflected in that the gas pressure is adjusted by the pressure regulating valve, that is, the pressure value of the entering gas is limited, and then the air compressor needs to maintain a continuous high pressure output state, the high pressure output state leads to the increase of energy consumption and the rapid triggering of the overheat protection mechanism of the air pump in the air compressor, because the air compressor stops working when the overheat protection mechanism is triggered, so that the air flow sealing mechanism is paused, but the granulation needs a certain time, and therefore the continuous air flow sealing mechanism cannot be realized only by the pressure regulating valve, and the powder cannot be completely prevented from contacting with the non-hygienic parts and the lubricating grease in the main shaft system.

[0004] Publication No. CN113578191A discloses a wet granulator, which comprises a support seat, a granulating pot, an upper frame body, a lower plate body, a first air cylinder, a second air cylinder, a multi-stage filter screen and a stirring assembly, … and is located above the granulating pot. The top end of the lower plate body is provided with a material collecting groove. When producing, the granulator produces blocky raw materials through the granulating pot. The first air cylinder drives the lower plate body to rise. The granulating pot moves upward with the lower plate body until the stirring assembly is located inside the granulating pot. The stirring assembly is started to stir the raw materials into particles and enter the material collecting groove to discharge through the first discharge hole and the second discharge hole. Although this method can complete granulation and discharge, it has certain defects, mainly in the discharge method. The discharge here is mainly completed through the first discharge hole and the second discharge hole, i.e. corresponding to the first discharge collection and the second discharge collection. The main reason is that the initiative of the particles is relatively limited during discharge. During discharge, the particles only rely on mutual extrusion when the collecting groove is full. However, when the number is reduced to the point where extrusion disappears, it is no longer possible to discharge. Even if the second discharge hole is located at the bottom of the lower plate body, there will still be a small part of the particles in the collecting groove. Moreover, the space provided for the operator is relatively small. Each time the granulating pot needs to be removed from the lower plate body before complete discharge. The process is complicated. At the same time, the first air cylinder driving the lower plate body of the granulating pot can only provide simple upward / downward linear motion for the granulating pot and cannot assist in discharging.

[0005] Publication No. CN208612388U discloses a wet granulator convenient to clean, which comprises a pot body, an upper cover is assembled on the upper end of the pot body through bolts, … The motor A, the motor B and the motor C are electrically connected with the PLC controller. The granulator has a spraying device for spraying the pot body. The spraying device mainly comprises an annular pipe and a plurality of nozzles. The annular pipe is used to pass water, and the nozzles are used to spray the water in the annular pipe onto the pot body. Although this method can achieve cleaning, it has certain defects. Because the nozzles have a certain volume, the number of nozzles arranged on the annular pipe is very limited, and the distance between each spraying point is large, so the covered area is small. Moreover, the spraying device can only be static, i.e. cannot rotate, so it cannot compensate for the small covered area. Therefore, it can only achieve comprehensive cleaning by gradually filling the pot body with water. The cleaning efficiency is low, and manual intervention may be required. SUMMARY

[0006] The present application aims to solve the above-mentioned problems of the prior art.

[0007] The technical solution adopted by the present application to solve the technical problem is as follows: the granulator comprises a rack, a material bin and a stirring main shaft, and further comprises:

[0008] A stirring spindle sealing mechanism is arranged on the stirring spindle to provide airflow sealing protection for the stirring spindle, to prevent the production of medicinal powder from contacting non-hygienic parts and lubricating grease in the stirring spindle, and is equipped with a pressure increasing unit to increase the air pressure in the shaft chamber.

[0009] A kettle body lifting and overturning mechanism is arranged on the frame to lift the material bin when granulation is completed, so that the stirring spindle enters / leaves the material bin, and the material bin is overturned and can be reset after the particles are separated from the material bin.

[0010] A stirring spindle spraying mechanism is arranged in the stirring spindle to clean the material bin after granulation, and can increase the water flow rate while spraying water in all directions when the water flows.

[0011] Further improvement, the upper end of the frame is provided with a driving chamber, a support seat is arranged at the center position of the driving chamber, a power source for driving the stirring spindle is arranged on the support seat, a lower shaft sealing part as one part of the stirring spindle sealing mechanism is arranged on the bottom plate of the driving chamber, an upper shaft sealing part as another part of the stirring spindle sealing mechanism is arranged on the bottom plate of the support seat, and simultaneously passes through the bottom plate of the support seat, the bottom plate of the driving chamber and cooperates with the lower shaft sealing part, the air inlet starting point is arranged on the upper shaft sealing part, the air inlet ending point is arranged on the lower shaft sealing part to guide the gas to the shaft chamber, the first gas passage and the second gas passage for guiding the gas to the air inlet ending point through the first air inlet direction and the second air inlet direction are arranged between the air inlet starting point and the air inlet ending point, and the pressure increasing unit is arranged in the second gas passage.

[0012] Further improvement, the pressure increasing unit includes a left positioning part, a middle positioning part for guiding the gas to enter, and a right moving part for guiding the gas to exit, the assembly part is arranged in the left positioning part and synchronously passes through the middle positioning part, the right moving part is movably arranged on the connecting body, the assembly part and the inner wall of the second gas passage form a sealed space and make the entering gas as the kinetic energy to move the right moving part.

[0013] Further improvement, the assembly part includes a connecting body and a guide body, the connecting body is connected with the left positioning part and the middle positioning part, the right moving part is movably arranged on the connecting body, the pulling member is arranged in the connecting body, one end of the pulling member is connected with the left positioning part, the other end is connected with the guide body, and the gas entering from the left positioning part can be guided into the guide body, the third gas passage in the cross-shaped structure is arranged in the guide body and can divide the entering gas into two streams, one stream as the kinetic energy to move the right moving part, and the other stream directly enters into the shaft chamber; the side port arranged along the radial direction of the connecting body is in communication with the vertical section of the third gas passage, and is provided with a stop valve; the elastic unit is further arranged between the middle positioning part and the right moving part to reset the right moving part after losing the moving kinetic energy.

[0014] Further improvement, the pot body lifting and overturning mechanism comprises two guide rods arranged on the frame and used to drive the material bin to lift and hinge with the material bin, two symmetrically distributed side plates arranged on the frame and below the material bin, and a material bin connecting piece arranged above the side plate and adapted to be connected with the material bin, the bottom of the material bin connecting piece is provided with two symmetrically distributed swing arms, the swing arms have an assembly base surface, and the assembly base surface is provided with two upper and lower distributed positioning units; the side plate has an assembly cooperation surface in contact with the assembly base surface, the assembly cooperation surface is provided with an initial joint used to limit the material bin connecting piece in an initial state, and two final joints used to limit the material bin connecting piece in a final state, the assembly cooperation surface is provided with a first guide channel and a second guide channel used to guide the two positioning units to reach the corresponding final joints through a first guide direction and a second guide direction respectively, and the swing arms or the material bin connecting piece are overturned by 90°.

[0015] Further improvement, the side plate has an assembly side surface arranged opposite to the assembly cooperation surface, and is provided with a power source used to drive the swing arms to overturn; a synchronous shaft is arranged between the two lower positioning units, the synchronous shaft is provided with two connecting arms at a position close to the power source, one end of the two connecting arms is rotatable through the same shaft as a rotating shaft, and the other end is rotatably connected with the synchronous shaft and connected with the output end of the power source respectively; the top surface of the material bin connecting piece is provided with a plurality of vacuum suction cups distributed along the length direction of the material bin connecting piece.

[0016] Further improvement, the stirring main shaft spraying mechanism comprises an outer connecting part, an upper connected part and a lower connected part, the stirring main shaft has an upper half main shaft and a lower half main shaft with a separation interval, the upper half main shaft is provided with a first water channel for water inlet, the lower end of the upper half main shaft and the upper end of the lower half main shaft are provided with concave cavities, the outer connecting part is arranged in the concave cavity of the upper half main shaft and generates a limiting force to prevent separation, the lower connected part is arranged in the concave cavity of the lower half main shaft and generates a limiting force to prevent separation, and the upper connected part is arranged in the inner cavity of the outer connecting part and has a second water channel communicated with the first water channel, and the lower connected part is arranged in the inner cavity of the outer connecting part and forms a preset interval for water passage with the upper connected part.

[0017] Further improvement, the top of the lower connected part is provided with a groove, the side wall of the groove is inclined and the opening is towards the preset interval, the inner bottom of the groove is provided with a V-shaped body, the side wall of the V-shaped body and the side wall of the groove combine to form a W-shaped aggregation surface; the bottom surface of the upper connected part is provided with a boss extending into the groove, the second water channel extends into the boss and penetrates to obtain a water outlet, and the side wall of the boss is inclined and the inclination is consistent with the inclination of the side wall of the groove.

[0018] Further improvement, the preset interval is provided with a connecting lug for connecting the upper and lower connected parts, and the connecting lug is provided with a flow guide hole arranged along the water flow direction and allowing water flow.

[0019] Further improvement, the lower connected part is provided with a plug-in part, and the outer circumferential surface of the plug-in part is provided with a plurality of guide bodies arranged in a circular ring array with the center of the plug-in part as the center, the guide bodies extend from the top end to the bottom end of the plug-in part while deflecting to one side, and the adjacent guide bodies form flow channels for dispersing water flow, the bottom end of the guide body extends below the plug-in part so that the outlet of the flow channel is exposed in the separation interval, and the width of the flow channel gradually narrows from the inlet to the outlet.

[0020] The beneficial effects of the present application are:

[0021] The present application pressurizes the gas flow sealed to the stirring main shaft, so that the air compressor only needs to be in a normal pressure conveying state, thereby delaying the time of triggering the overheat protection mechanism of the air pump of the air compressor and prolonging the working time of the air compressor, so that the air flow sealing mechanism in the initial and middle stages of granulation does not pause, ensuring the reliability of the sealing, and ensuring that the production of the medicine powder does not contact with non-hygienic level parts and lubricating grease in the main shaft system, and ensuring the cleanliness and cross contamination in the production process;

[0022] The material bin of the present application can be lifted and turned over, and the pot body inside the material bin is in an arc shape, so that the arc can guide the particles after turning over, so that all particles can quickly and completely separate from the material bin, and there is no part of the particles remaining inside, and the pot body inside the material bin is also completely exposed outside, which is convenient for cleaning.

[0023] The stirring main shaft of the present application is combined in the form of an upper half shaft and a lower half shaft, and the stirring main shaft spraying mechanism is used as a connecting part of the two, so that the spraying state can be dynamic or static, that is, the stirring main shaft rotates in the dynamic state, and the stirring main shaft does not rotate in the static state, and the composition of the stirring main shaft spraying mechanism can ensure the spraying coverage area and the spraying intensity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present application;

[0025] Figure 2 It is a full cross-sectional structural schematic diagram of the present application;

[0026] Figure 3 It is a full cross-sectional structural schematic diagram of the present application Figure 2 It is a local enlarged schematic diagram of part A of the present application;

[0027] Figure 4 It is a full cross-sectional structural schematic diagram of the present application pressurizing unit;

[0028] Figure 5 Fig. 1 is a structural schematic diagram of the pot lifting and overturning mechanism of the present application;

[0029] Figure 6 Fig. 2 is a partial enlarged schematic diagram of part B of the present application; Figure 2

[0030] Figure 7 Fig. 3 is a partial enlarged schematic diagram of part C of the present application; Figure 6

[0031] Figure 8 Fig. 4 is a structural schematic diagram of the plug-in part of the present application. DETAILED DESCRIPTION

[0032] The present application will be further described below in conjunction with the accompanying drawings:

[0033] Referring to the drawings: the granulator comprises a frame 1, a material bin 2, a stirring main shaft 3, and further comprises:

[0034] A stirring main shaft sealing mechanism 4 is arranged on the stirring main shaft 3, which is used to provide airflow sealing protection for the stirring main shaft 3 to prevent the production of powder from contacting non-hygienic level parts and lubricating grease in the stirring main shaft, and is equipped with a pressure increasing unit 5 used to increase the air pressure entering the shaft chamber; and

[0035] A pot lifting and overturning mechanism 6 is arranged on the frame 1, which is used to lift the material bin 2 when granulating / finishing granulating to make the stirring main shaft 3 enter / leave the material bin 2, and overturn the material bin 2 and make it resettable after the particles are separated from the material bin 2.

[0036] A stirring main shaft spraying mechanism 7 is arranged in the stirring main shaft 3, which is used to clean the material bin 2 after finishing granulating, and can increase the water flow rate while spraying in all directions when the water flows.

[0037] ​​The upper end of the frame 1 is provided with a driving chamber 11, a support seat 11-a is arranged at the center position of the driving chamber 11, a power source for driving the stirring main shaft 3 is arranged on the support seat 11-a, a lower shaft sealing part 41 which is part of the stirring main shaft sealing mechanism 4 is arranged on the bottom plate of the driving chamber 11, an upper shaft sealing part 42 which is another part of the stirring main shaft sealing mechanism 4 and passes through the bottom plate of the support seat 11-a, the bottom plate of the driving chamber 11 and cooperates with the lower shaft sealing part 41 is arranged on the bottom plate of the support seat 11-a, an air inlet starting point 42-a is arranged on the upper shaft sealing part 42, an air inlet ending point 41-a which guides the gas to the shaft chamber is arranged on the lower shaft sealing part 41, the first gas passage 8 and the second gas passage 9 which guide the gas to pass through the first air inlet direction and the second air inlet direction to the air inlet ending point 41-a are arranged between the air inlet starting point 42-a and the air inlet ending point 41-a, and the supercharging unit 5 is arranged in the second gas passage 9. The gas flow sealing of the stirring main shaft 3 can be supercharged, so that the air compressor only needs to be in the normal pressure conveying state, thereby delaying the time of the air pump trigger overheating protection mechanism of the air compressor, and prolonging the working time of the air compressor, so that the initial and middle stage of the granulation airflow sealing mechanism does not stop, ensures the reliability of the sealing, and the production of the medicine powder does not contact with the non-hygienic parts and the lubricating grease in the main shaft system, also ensures the cleanliness and cross contamination in the production process, at the same time, the first gas passage 8 is formed on the upper shaft sealing part 42, the bottom plate of the support seat 4 and the lower shaft sealing part 41, the second gas passage 9 is formed on the lower shaft sealing part 41, so that the stirring main shaft 3 is axially sealed with the upper shaft sealing part 42 and the lower shaft sealing part 41, and the first gas passage 8 and the second gas passage 9 are obtained for guiding the gas to enter, and the first air inlet direction and the second air inlet direction have continuity in connection, so that the gas can quickly enter into the second gas passage 9 after passing through the first gas passage 8, so as to quickly guide the gas to enter the shaft chamber.

[0038] The booster unit 5 comprises a left positioning part 51 for guiding the gas to enter, a middle positioning part 52, and a right moving part 53 for guiding the gas to leave, the left positioning part 51 is provided with an assembly part 51-a which synchronously passes through the middle positioning part 52, the right moving part 53 moves the assembly part 51-a, the assembly part 51-a forms a sealed space with the inner wall of the second gas passage 9 and makes the entering gas as the kinetic energy to move the right moving part 53. The left positioning part 51 and the middle positioning part 52 make the booster unit 5 be able to stably exist in the second gas passage 9, and the connection between the left positioning part 51, the middle positioning part 52 and the second gas passage 9 can adopt a screw connection, which can not only provide a stable connection, but also solve the problem of narrow operation space. The assembly part 51-a is mainly used to guide the gas and also as a guide part of the right moving part 53, that is, it gives the gas a multi-directional gas direction. When the gas re-enters the second gas passage 9 by using the booster unit 5, it can generate negative pressure by pushing the right moving part 53, thereby increasing the increase of gas pressure. The assembly part 51-a and the left positioning part 51 and the middle positioning part 52 also adopt a screw connection, and the screw direction is consistent with the direction in which the left positioning part 51 or the middle positioning part 52 rotates in the second gas passage 9, so that disintegration does not occur. At the same time, the left positioning part 51, the assembly part 51-a and the right moving part 53 all have a certain length of inner hole, which can be used as a gas passage.

[0039] The assembly part 51-a includes a connecting body 51-a1 connected with the left positioning part 51 and the middle positioning part 52, and a guide body 51-a2, the right moving part 53 is movably arranged on the connecting body 51-a1, the connecting body 51-a1 is provided with a pulling member 51-a11, one end of the pulling member 51-a11 is connected with the left positioning part 51, the other end is connected with the guide body 51-a2, and the pulling member 51-a11 can also guide the gas entering from the left positioning part 51 into the guide body 51-a2, the guide body 51-a2 is provided with a third gas passage 51-a21 in a cross shape and can divide the entering gas into two streams, one stream is used as the kinetic energy to drive the right moving part 53 to move, and the other stream directly enters into the shaft chamber; the connecting body 51-a1 is provided with a side port 51-a12 arranged along the radial direction of the connecting body 51-a12, the side port 51-a12 is communicated with the vertical section of the third gas passage 51-a21, and is provided with a stop valve; the middle positioning part 52 and the right moving part 53 are further provided with the elastic unit 10 to reset the right moving part 53 after losing the moving kinetic energy. The pulling member 51-a11 is used as a connecting part, and also uses the inner hole of the pulling member 51-a11 as a gas guide part, so that the guide body 51-a2 and the connecting body 51-a1 only need to be connected by a simple plug-in connection, and are in clearance fit, and the connection tightness can be increased by a sealing ring, the guide body 51-a2 can realize the distribution of the gas through the third gas passage 51-a21 in a cross shape, so that one stream is used as the kinetic energy to drive the right moving part 53 to move, and the other stream directly enters into the shaft chamber, and the side port 51-a12 enables the gas to enter into the second gas passage 9 through the connecting body 51-a1, and the stop valve is used to control whether the gas is discharged from the side port 51-a12, so that the gas pressure can be increased in the initial and middle stages of stirring, and is opened or closed according to the powder generated by the granulation in the later stage, and the elastic unit 10 is a spring, the spring has elasticity, and the elastic trigger generates when the right moving part 53 moves under negative pressure, that is, stretching, so that the spring can reset after the stop valve stops the gas from going out of the side port 51-a12, so that the gas pressure can be continuously increased in the initial and middle stages of stirring, that is, the opening / closing action needs to be repeated.

[0040] The kettle lifting and overturning mechanism 6 comprises two guide rods 61 arranged on the frame 1 and used to lift and hinge the material bin 2, two symmetrically distributed side plates 62 arranged on the frame 1 and below the material bin 2, and a material bin connecting piece 63 arranged above the side plates 62 and adapted to be connected with the material bin 2, the bottom of the material bin connecting piece 63 is provided with two symmetrically distributed swing arms 63-a, the swing arms 63-a have an assembly base surface 63-a1, the assembly base surface 63-a1 is provided with two upper and lower distributed positioning units 20, the side plates 62 have an assembly matching surface 62-a in contact with the assembly base surface 63-a1, the assembly matching surface 62-a is provided with an initial joint 62-a1 used to define the initial state of the material bin connecting piece 63, and two final joints 62-a2 used to define the final state of the material bin connecting piece 63, the assembly matching surface 62-a is provided with a first guide channel 62-a3 and a second guide channel 62-a4 used to guide the two positioning units 20 to reach the corresponding final joints 62-a2 through the first guide direction and the second guide direction respectively, and make the swing arms 63-a or the material bin connecting piece 63 overturn 90°. The material bin connecting piece 3 can be overturned, compared with the prior art, the particles can be given complete initiative during discharging, and the kettle in the material bin 12 presents a circular arc shape, so that the circular arc can guide the particles after overturning, so that all the particles can quickly and completely separate from the material bin 2, and part of the particles will not be left in the material bin 2, so that the inside of the kettle in the material bin 2 can be completely exposed, which is convenient for the operator to clean, and the kettle does not need to be removed, and the second guide channel 62-a4 and the first guide channel 62-a3 are connected, and the second guide channel 62-a4 is provided with a turning channel 62-a5 through which the lower positioning unit 20 reaches the second guide channel 62-a4 from the first guide channel 62-a3 through the turning direction when the upper positioning unit 20 reaches the corresponding final joint 62-a2, the turning channel 62-a5 connects the first guide channel 62-a3 and the second guide channel 62-a4, so that the first guide direction, the turning direction and the second guide direction have continuity in connection, the first guide direction is basically a straight line direction, the second guide direction and the turning direction are arc-shaped directions, correspondingly, the first guide channel 62-a3 basically extends in a straight line, and the second guide channel 62-a4 and the turning channel 62-a5 basically extend in an arc line. The two final joints 62-a2 are a first final joint 62-a21 and a second final joint 62-a22, when the upper positioning unit 20 slides to the first final joint 62-a21, the material bin connecting piece 63 will move upward by a certain distance in advance, so as to avoid excessive swing amplitude, then the lower positioning unit 20 enters the turning channel 62-a5 under the swing of the swing arm 63-a, then enters the second guide channel 62-a4 with the increase of the swing amplitude, and reaches the second final joint 62-a22, thereby completing the overturning of the material bin 2.

[0041] The side plate 62 has an assembly side 62-b opposite to the assembly matching surface 62-a, and is provided with a power source for driving the swing arm 63-a to overturn; the synchronous shaft 201 is arranged between the two positioning units 20 below, and is provided with two connecting arms 30 at a position close to the power source, one end of the two connecting arms 30 is rotatable through the same shaft 303 as the rotation shaft, and the other end is respectively rotatably connected with the synchronous shaft 201 and the output end of the power source; the top surface of the material bin connecting piece 63 is provided with a plurality of vacuum suction cups 63-b distributed along the length direction of the material bin connecting piece 63, the two swing arms 63-a can be synchronously swung through the synchronous shaft 201, and the swinging of the swing arm 63-a is mainly realized through the two connecting arms 30 (herein the connecting arms 30 are divided into a first connecting arm 301 and a second connecting arm 302), that is, the output shaft of the power source (motor) is connected with one end of the first connecting arm 301, and the first connecting arm 301 will not self-rotate on the output shaft of the motor after the connection, but will rotate with the motor, the shaft 303 is fixed at the other end of the first connecting arm 301, one end of the second connecting arm 302 is arranged on the shaft 303 and self-rotates along the axial direction thereof, and the other end is rotatably connected with the synchronous shaft 201, so that the motor can transmit the rotation force generated by itself to the swing arm 363-a through the two connecting arms 30, so as to realize the overturning of the material bin connecting piece 3 by 90°, the connection of the vacuum suction cup 63-b with the material bin 2, and the firm adsorption of the negative pressure provided by the vacuum suction cup 63-b on the bottom of the material bin 2, so that the material bin 2 will also overturn after the overturning of the material bin connecting piece 63.

[0042] The stirring spindle spraying mechanism 7 comprises an outer connecting part 71, an upper connected part 72, and a lower connected part 73, the stirring spindle 3 has an upper half spindle 31 and a lower half spindle 32 with a separation interval, the upper half spindle 31 is internally provided with a first water channel 31-a for water inlet, the lower end of the upper half spindle 31 and the upper end of the lower half spindle 32 are both provided with a concave cavity 40, the outer connecting part 71 is placed in the concave cavity 40 of the upper half spindle 31 and generates a limiting force to prevent separation, the lower connected part 73 is placed in the concave cavity 40 of the lower half spindle 32 and generates a limiting force to prevent separation, the upper connected part 72 is arranged in the inner cavity of the outer connecting part 71 and has a second water channel 72-a in communication with the first water channel 31-a, the lower connected part 73 is arranged in the inner cavity of the outer connecting part 71 and forms a preset interval for water flow between the upper connected part 72. The outer connecting part 71 and the lower connected part 73 serve as connecting parts for connecting the upper half spindle 31 and the lower half spindle 32, so that when the upper half spindle 31 rotates, the lower half spindle 32 also rotates, and the situation that the lower half spindle 32 does not rotate because the two are not integrated does not occur, so that the stirring spindle spraying mechanism 7 can also rotate, thereby realizing dynamic spraying, increasing the spraying distance and intensity of the water flow, and the area covered by spraying is large, the second water channel 72-a is not only used to guide the water flow into the preset interval, but also has an inner diameter that is large at the top and small at the bottom, and because the inner diameter decreases, the water flow rate and cross-sectional water pressure will increase sharply, thereby forming a concentrated and aggregated water flow. In this embodiment, the outer connecting part 71 and the upper connected part 72, the upper connected part 72 and the concave cavity 40 of the lower end of the upper half spindle 31, and the lower connected part 73 and the concave cavity 40 of the upper end of the lower half spindle 32 are all threadedly connected, and the screw direction is consistent with the rotation direction of the stirring spindle 3

[0043] The top of the lower connecting part 73 is provided with a groove 73-a, the side wall of the groove 73-a is inclined and the opening faces the preset interval, the inner bottom is provided with a V-shaped body 73-a1, the side wall of the V-shaped body 73-a1 combines with the side wall of the groove 73-a to form a “W”-shaped converging surface 50; the bottom surface of the upper connecting part 72 is provided with a boss 72-b extending into the groove 73-a, the second water channel 72-a extends into the boss 72-b and penetrates to form a water outlet, the side wall of the boss 72-b is inclined and the inclination is consistent with the inclination of the side wall of the groove 73-a. The inner diameter of the second water channel 72-a is configured to be large at the top and small at the bottom. Due to the decrease of the inner diameter, the water flow rate and the cross-sectional water pressure will increase sharply, thereby forming a converging water flow, so that the water flow enters the preset interval in a jet manner, which is the first aggregation of the water flow. Then, the converging water flow collides with the “W”-shaped converging surface 50, the water flow impact force and the wall reaction force interact, and the water flow is aggregated in two directions under the action of the forces, so that the flow rate in the preset interval is increased. At the same time, the boss 72-b shortens the distance between the water outlet and the converging surface 50, so that the part with a reduced inner diameter is also close to the converging surface 50, thereby making the water flow impact force and the wall reaction force generated when the converging water flow collides with the converging surface 50 stronger, and the water flow in the preset interval faster.

[0044] The preset interval is provided with a connecting lug 60 for connecting the upper connecting part 72 and the lower connecting part 73, the connecting lug 60 is provided with a flow guide hole 601 arranged in the direction of the water flow and allowing the water flow to pass through. Since there is no direct connection between the lower connecting part 73 and the outer connecting part 71, in order to maintain the preset interval, the connecting lug 60 is provided, which is welded to the lower connecting part 73 and threaded to the upper connecting part 72 (the upper connecting part 72 is provided with a threaded groove matched with the threads). The configuration of the flow guide hole 601 is consistent with that of the second water channel 72-a, so that the effect generated when the water flow passes through is consistent with that generated by the second water channel 72-a, and the flow rate of the water flow is also improved.

[0045] The lower connecting part 73 is externally provided with a plug-in part 70, and a plurality of guide bodies 701 are arranged in a circular array around the center of the plug-in part 70. The guide bodies 701 extend from the top end to the bottom end of the plug-in part 70 while deflecting to one side, and a flow channel 701-a for dispersing water flow is formed between adjacent guide bodies 701. The bottom end of the guide body 701 extends below the plug-in part 70 so that the outlet of the flow channel 701-a is exposed in the partitioned space, and the width of the flow channel 701-a gradually narrows from the inlet to the outlet. The plug-in part 70 realizes the connection with the lower connecting part 73 and is used to arrange the guide bodies 701. The arrangement of the guide bodies 701 allows a large number of guide bodies 701 to be used, and the position that can be reached by the spray is also large. Only the width of the guide body 701 needs to be controlled. In addition, the water flow can rotate when passing through each flow channel 701-a, which can accelerate the propulsion of the water flow. The arrangement of the width of the flow channel 701-a can further increase the flow rate of the water flow, so that the water sprayed to the pot body is more powerful. In this way, the stirring shaft 3 can also ensure the spraying distance and intensity of the spray water flow when it is static (not rotating). In order to ensure the accuracy of the spray, the bottom end of the guide body 701 extends below the plug-in part 70 so that the outlet of the flow channel 701-a is exposed in the partitioned space. In this way, the water flow sprayed will not hit the inner wall of the outer connecting part 71, but will be directly sprayed on the pot body of the material bin 2.

[0046] Although the present application has been illustrated and described with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made therein without departing from the scope of the claims.

Claims

1. A granulator comprising a frame (1), a material bin (2) and a stirring main shaft (3), characterized in that: Also included are: a stirring spindle sealing mechanism (4) provided on the stirring spindle (3) to provide airflow sealing protection for the stirring spindle (3) to prevent the production of medicinal powder from contacting non-hygienic parts and lubricating grease in the stirring spindle, and equipped with a pressure boosting unit (5) to increase the air pressure entering the shaft chamber; a kettle body lifting and overturning mechanism (6) provided on the frame (1) to drive the material bin (2) to lift and lower to make the stirring spindle (3) enter and leave the material bin (2) when granulating / finishing granulation, and to drive the material bin (2) to overturn and reset when the granules are separated from the material bin (2); a stirring spindle spraying mechanism (7) provided in the stirring spindle (3) to clean the material bin (2) after finishing granulation, and to spray water around while increasing the water flow rate when the water flows; The stirring spindle spraying mechanism (7) includes an outer connecting part (71), an upper connected part (72), and a lower connected part (73), the stirring spindle (3) has an upper half spindle (31) and a lower half spindle (32) with a separation interval, the upper half spindle (31) is provided with a first water channel (31-a) for water inlet, the lower end of the upper half spindle (31) and the upper end of the lower half spindle (32) are provided with a concave cavity (40), the outer connecting part (71) is placed in the concave cavity (40) of the upper half spindle (31) and generates a limiting force to prevent separation, the lower connected part (73) is placed in the concave cavity (40) of the lower half spindle (32) and generates a limiting force to prevent separation, the upper connected part (72) is provided in the inner cavity of the outer connecting part (71) and has a second water channel (72-a) communicating with the first water channel (31-a), the lower connected part (73) is provided in the inner cavity of the outer connecting part (71) and forms a predetermined interval for water passage between the upper connected part (72).

2. A granulator according to claim 1, characterised in that The upper end of the frame (1) is provided with a driving chamber (11), the central position of the driving chamber (11) is provided with a support seat (11-a), the support seat (11-a) is provided with a power source for driving the stirring main shaft (3), the bottom plate of the driving chamber (11) is provided with a lower shaft sealing part (41) as one part of the stirring main shaft sealing mechanism (4), the bottom plate of the support seat (11-a) is provided with an upper shaft sealing part (42) which simultaneously passes through the bottom plate of the support seat (11-a), the bottom plate of the driving chamber (11) and cooperates with the lower shaft sealing part (41) and is another part of the stirring main shaft sealing mechanism (4), the upper shaft sealing part (42) is provided with an air inlet starting point (42-a), the lower shaft sealing part (41) is provided with an air inlet end point (41-a) for guiding gas to the shaft chamber, the air inlet starting point (42-a) and the air inlet end point (41-a) have a first gas passage (8) and a second gas passage (9) for guiding gas to the air inlet end point (41-a) through a first air inlet direction and a second air inlet direction, and the supercharging unit (5) is arranged in the second gas passage (9).

3. A granulator according to claim 2, characterised in that The supercharging unit (5) includes a left positioning part (51) for guiding gas to enter, a middle positioning part (52), and a right moving part (53) for guiding gas to leave, the left positioning part (51) is provided with an assembly part (51-a) which synchronously passes through the middle positioning part (52), the right moving part (53) is movably arranged in the assembly part (51-a), the assembly part (51-a) and the inner wall of the second gas passage (9) form a sealed space and make the entering gas as kinetic energy to drive the right moving part (53) to move.

4. A granulator according to claim 3, characterised in that The assembling part (51-a) comprises a connecting body (51-a1) connected with the left positioning part (51) and the middle positioning part (52), and a guide body (51-a2), the right moving part (53) is movably arranged on the connecting body (51-a1), a pulling member (51-a11) is arranged in the connecting body (51-a1), one end of the pulling member (51-a11) is connected with the left positioning part (51), the other end is connected with the guide body (51-a2), and the pulling member (51-a11) can also guide the gas entering from the left positioning part (51) into the guide body (51-a2), a third gas passage (51-a21) in a cross-shaped structure is arranged in the guide body (51-a2), and the third gas passage (51-a21) can divide the entering gas into two streams, one stream is used as kinetic energy to drive the right moving part (53) to move, and the other stream directly enters into the shaft chamber, a side port (51-a12) is arranged on the connecting body (51-a1) in a radial direction, the side port (51-a12) is communicated with a vertical section of the third gas passage (51-a21), and a stop valve is arranged on the side port (51-a12), and an elastic unit (10) is further arranged between the middle positioning part (52) and the right moving part (53), so that the right moving part (53) is reset after losing the moving kinetic energy.

5. The granulator of claim 1 wherein, The pot lifting and overturning mechanism (6) comprises two guide rods (61) arranged on the rack (1) and used to drive the material bin (2) to lift and hinge, two symmetrically distributed side plates (62) arranged on the rack (1) and below the material bin (2), and a material bin connecting piece (63) arranged above the side plate (62) and adapted to be connected with the material bin (2), the bottom of the material bin connecting piece (63) is provided with two symmetrically distributed swing arms (63-a), the swing arm (63-a) has an assembly base surface (63-a1), the assembly base surface (63-a1) is provided with two upper and lower positioning units (20), the side plate (62) has an assembly matching surface (62-a) in contact with the assembly base surface (63-a1), the assembly matching surface (62-a) is provided with an initial joint (62-a1) used to limit the material bin connecting piece (63) in an initial state, and two final joints (62-a2) used to limit the material bin connecting piece (63) in a final state, the assembly matching surface (62-a) is provided with a first guide channel (62-a3) and a second guide channel (62-a4) for guiding the two positioning units (20) to reach the corresponding final joints (62-a2) through a first guide direction and a second guide direction respectively, and enabling the swing arm (63-a) or the material bin connecting piece (63) to overturn 90°.

6. A granulator according to claim 5, characterised in that The side plate (62) has an assembly side (62-b) opposite to the assembly matching surface (62-a), and is provided with a power source for driving the swing arm (63-a) to overturn; a synchronous shaft (201) is arranged between the two lower positioning units (20), and the synchronous shaft (201) is provided with two connecting arms (30) at a position close to the power source; one end of the two connecting arms (30) is rotatable through the same shaft (303) as a rotating shaft, and the other end is rotatably connected with the synchronous shaft (201) and connected with the output end of the power source, respectively; a plurality of vacuum suction cups (63-b) are arranged on the top surface of the material bin connecting piece (63) and are distributed along the length direction of the material bin connecting piece (63).

7. The granulator of claim 1 wherein, The top of the lower connected part (73) is provided with a groove (73-a), the side wall of the groove (73-a) is inclined and the opening faces a preset interval, the inner bottom of the groove (73-a) is provided with a V-shaped body (73-a1), the side wall of the V-shaped body (73-a1) and the side wall of the groove (73-a) combine to form a "W"-shaped aggregation surface (50), the bottom surface of the upper connected part (72) is provided with a boss (72-b) extending into the groove (73-a), the second water channel (72-a) extends into the boss (72-b) and penetrates to form a water outlet, and the side wall of the boss (72-b) is inclined and the inclination is consistent with the inclination of the side wall of the groove (73-a).

8. The granulator of claim 1, wherein The preset interval is provided with a connecting lug (60) for simultaneously connecting the upper connected part (72) and the lower connected part (73), and the connecting lug (60) is provided with a flow guide hole (601) arranged along the water flow direction and allowing water flow.

9. The granulator of claim 1 wherein, The lower connected part (73) is provided with a plug-in part (70), the outer peripheral surface of the plug-in part (70) is provided with a plurality of guide bodies (701) arranged in a circular ring array with the center of the plug-in part (70) as the center, the guide bodies (701) extend from the top end to the bottom end of the plug-in part (70) while deflecting to one side, adjacent guide bodies (701) form flow channels (701-a) for dispersing water flow, the bottom end of the guide body (701) extends below the plug-in part (70) so that the outlet of the flow channel (701-a) is exposed in the partition interval, and the width of the flow channel (701-a) gradually narrows from the inlet to the outlet.

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