Crushing equipment and production line body

Abstract

The invention relates to the technical field of material smashing, and discloses smashing equipment and a production line body, the smashing equipment comprises a cavity, a rotor and a spraying assembly, the cavity is provided with a feeding port, at least one fixed plate is arranged in the cavity, and the fixed plate is used for being in transition butt joint with a face bearing materials to be smashed and a face, used for bearing the materials to be smashed, of the feeding port; the rotor is rotationally arranged on the cavity, at least one movable cutter is arranged at the part, located in the cavity, of the rotor, and the movable cutters are matched with the fixed plates at intervals; and the spraying assembly is located in the cavity, a spraying head of the spraying assembly faces the fixed plate and the movable cutter, and materials which are in a semi-molten state and are soft and high in toughness can be smashed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material crushing equipment, in particular to a crushing equipment and a production line body. BACKGROUND

[0002] In the related art, some industrial materials are in a semi-molten state after production, and have a long solidification time, so they need to be sliced in time for subsequent processing.

[0003] Specifically, low alcoholysis degree polyvinyl alcohol is an important petrochemical product, which is widely used in dispersants, extrusion injection molding processing, electrolyte, vinyl chloride suspension polymerization, special adhesives and other industries; in the production process of polyvinyl alcohol obtained by low alkali alcoholysis, when the alcoholysis degree is low (less than about 84%), the polyvinyl alcohol is in a semi-molten state, and is soft and strong in toughness, poor in mechanical processing ability, and difficult to crush, and at the same time, the alcoholysis reaction is continuing, so it needs to be crushed efficiently in time to enter the subsequent section for alcoholysis reaction termination process.

[0004] However, the existing crushing equipment cannot crush materials in a semi-molten state, which are soft and strong in toughness. SUMMARY

[0005] The present application provides a crushing equipment and a production line body, which can crush materials in a semi-molten state, which are soft and strong in toughness.

[0006] In one aspect, the present application provides a crushing equipment, which comprises a cavity, a rotor and a spraying assembly, and the specific scheme is as follows.

[0007] The cavity has a feed inlet, at least one fixed plate is arranged in the cavity, the fixed plate is used for transition butt joint with a surface carrying the material to be crushed and a surface of the feed inlet carrying the material to be crushed; the rotor is rotationally arranged on the cavity, at least one moving knife is arranged at a position of the rotor in the cavity, and the moving knife is spaced apart from the fixed plate; the spraying assembly is located in the cavity, and a spraying head of the spraying assembly faces the fixed plate and the moving knife.

[0008] Beneficial effect: the fixed plate is arranged in the cavity to support the semi-molten material which is soft and has flexibility, and the cleaning liquid sprayed by the spraying assembly is used to prevent the crushed material from being bonded on the inner wall of the cavity and other components (such as the moving knife and the fixed plate) in the cavity, so as to realize the crushing of the semi-molten material which is soft and strong in toughness.

[0009] In an optional embodiment, the spraying assembly comprises a spraying pipe and a plurality of spraying heads, the spraying pipe extends along the axial direction of the rotor, and the plurality of spraying heads are arranged on the spraying pipe and spaced apart along the axial direction of the rotor.

[0010] In an alternative embodiment, the moving blade has a plurality of first blade portions and a plurality of second blade portions, the plurality of first blade portions and the plurality of second blade portions are arranged alternately along the axial direction of the rotor, the first blade portions are arranged in a radial direction of the rotor in a staggered manner with the second blade portions; and / or, the fixed plate is provided with a third blade portion near the moving blade and near the edge of the material to be crushed.

[0011] In an alternative embodiment, the cavity is provided with an air inlet, the air inlet is used to input protective gas into the cavity, and the feeding port is in sealed communication with the output port of the material input device.

[0012] In an alternative embodiment, a filter screen is further included, and the cavity is provided with a discharge port, and the filter screen is arranged at the discharge port.

[0013] In an alternative embodiment, the fixed plate is a plurality of fixed plates, and the plurality of fixed plates are arranged at intervals in the circumferential direction of the rotor, and the filter screen is located between any two fixed plates.

[0014] In an alternative embodiment, the first end of the rotor is provided with an axial limiting portion, the axial limiting portion is in rotational limiting cooperation with the cavity, and the second end of the rotor is in rotational cooperation with the cavity.

[0015] In an alternative embodiment, the rotor comprises a rotating shaft and a plurality of connecting discs, the plurality of connecting discs are arranged coaxially on the rotating shaft at intervals in the axial direction of the rotating shaft, the connecting disc has at least one connecting portion on the outer periphery thereof, the moving blade extends in the axial direction of the rotating shaft and is connected with the connecting portions on the plurality of connecting discs.

[0016] In an alternative embodiment, a fixed seat and a rotary driving device are further included, the rotary driving device and the cavity are arranged on the fixed seat, the output shaft of the rotary driving device is coaxially driven with the rotating shaft, and the rotary driving device is a variable frequency driving device.

[0017] In another aspect, the application further provides a production line body, comprising: the crushing device in any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or the related art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

[0019] Figure 1 Figure 2 is a side view of a shaft of a pulverizing device according to an embodiment of the present application; Figure 2 Figure 3 is a top view of a pulverizing device according to an embodiment of the present application; Figure 3 Figure 4 is a perspective view of a pulverizing device according to an embodiment of the present application; Figure 2 Figure 5 is a sectional view along A-A in Figure 4; Figure 4 Figure 6 is a sectional view along B-B in Figure 4; Figure 2 Figure 7 is a schematic view of cooperation of a rotor, a fixed plate and a filter screen in a pulverizing device according to an embodiment of the present application; Figure 5 Figure 8 is another schematic view of cooperation of a rotor, a fixed plate and a filter screen in a pulverizing device according to an embodiment of the present application; Figure 9 is a schematic view of a structure of a rotor in a pulverizing device according to an embodiment of the present application; Figure 6 Figure 10 is a schematic view of a structure of a moving knife in a pulverizing device according to an embodiment of the present application. Figure 7 Figure 11 is a schematic view of a structure of a moving knife in a pulverizing device according to an embodiment of the present application. Figure 8 Figure 12 is a schematic view of a structure of a moving knife in a pulverizing device according to an embodiment of the present application.

[0020] Figure 13 is a schematic view of a structure of a moving knife in a pulverizing device according to an embodiment of the present application. 1, cavity, 2, rotor; 3, spraying assembly; 4, filter screen; 5, fixed frame; 6, rotary driving device; 11, feeding port, 12, fixed plate; 121, third knife edge part; 13, air inlet; 14, discharging port; 15, top cover; 16, middle shell; 17, bottom shell; 18, connecting part; 21, moving knife; 211, first knife edge part; 212, second knife edge part; 22, axial limiting part; 23, rotating shaft; 24, connecting disc; 31, spraying head; 32, spraying pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. The terms "parallel", "perpendicular", "equal" include the described case and the approximate case of the described case, and the approximate case is within the acceptable deviation range, wherein the acceptable deviation range is determined by the ordinary skilled in the art considering the measurement being discussed and the error related to the measurement of the specific quantity (i.e. the limitation of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, wherein the acceptable deviation range of approximate parallel can be, for example, within 5°; "perpendicular" includes absolute perpendicular and approximate perpendicular, wherein the acceptable deviation range of approximate perpendicular can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, less than or equal to 5% of the difference between the two. For the ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood in specific cases.

[0023] In the related art, for some industrial materials, after being produced, they are in a semi-molten state and have a long solidification time, and need to be sliced in time for subsequent processing.

[0024] Specifically, low alcoholysis degree polyvinyl alcohol is an important petrochemical product, which is widely used in dispersant, extrusion injection molding processing, electrolyte, vinyl chloride suspension polymerization, special adhesive and other industries; in the production process of obtaining polyvinyl alcohol by low alkali alcoholysis, when the alcoholysis degree is low (less than about 84%), the polyvinyl alcohol is in a semi-molten state, and is soft and strong in toughness, poor in mechanical processing ability, and difficult to crush, and at the same time, the alcoholysis reaction is continuing, so efficient crushing is needed in time to enter the subsequent section for alcoholysis reaction termination process.

[0025] However, the existing crushing equipment cannot crush the material in a semi-molten state, which is soft and strong in toughness.

[0026] To solve the above technical problems, the application provides a crushing device and a production line body, which can crush materials in a semi-molten state, soft and strong in toughness.

[0027] The embodiments of the application will be described below in combination with Figures 1 to 8 .

[0028] According to the embodiments of the application, in one aspect, a crushing device is provided, as shown in the accompanying drawings, which comprises a cavity 1, a rotor 2 and a spraying assembly 3, and the specific solutions are as follows. Figures 1 to 4

[0029] As shown in the accompanying drawings, the cavity 1 is in the shape of a cuboid or a cylinder, etc., and the cavity 1 comprises a top cover 15, a middle shell 16 and a bottom shell 17, the middle shell 16 is open at the top and the bottom, the top cover 15 covers the top opening of the middle shell 16, and the bottom shell 17 covers the bottom opening of the middle shell 16, the middle shell 16 is provided with an inlet 11, and the bottom shell 17 is provided with an outlet 14. Figure 1 3 As shown in the accompanying drawings, the cavity 1 is provided with an inlet 11, which is in the shape of a rectangle, a trapezoid or other shapes, and is preferably in the shape of a rectangle; as shown in the accompanying drawings, at least one fixed plate 12 is fixedly arranged in the cavity 1 by means of bolting or clamping, the fixed plate 12 is used for the surface for carrying the material to be crushed, and the surface for carrying the material to be crushed of the inlet 11 is in smooth transition connection, specifically, the number of the fixed plate 12 can be one or more, for example, the number of the fixed plate 12 can be 1-4, and is preferably 2.

[0030] As shown in the accompanying drawings, the cavity 1 is provided with an inlet 11, which is in the shape of a rectangle, a trapezoid or other shapes, and is preferably in the shape of a rectangle; as shown in the accompanying drawings, at least one fixed plate 12 is fixedly arranged in the cavity 1 by means of bolting or clamping, the fixed plate 12 is used for the surface for carrying the material to be crushed, and the surface for carrying the material to be crushed of the inlet 11 is in smooth transition connection, specifically, the number of the fixed plate 12 can be one or more, for example, the number of the fixed plate 12 can be 1-4, and is preferably 2. Figure 1 Figure 3 It should be noted that the fixed plate 12 is used for the surface for carrying the material to be crushed, and the surface for carrying the material to be crushed of the inlet 11 is in smooth transition connection or smooth transition connection, wherein the smooth transition connection means that the two surfaces are in a plane, and the smooth transition connection means that the two surfaces are in an arc shape.

[0031] The surface for carrying the material to be crushed of the fixed plate 12 is opposite to the surface of the moving knife 21 in the rotating direction at the inlet 11, and the surface for carrying the material to be crushed of the inlet 11 is specifically the inner surface of the inner wall of the inlet 11 which is opposite to the rotating direction of the moving knife 21 at the inlet 11.

[0032] As in the first specific structure, as shown in the accompanying drawings, the spraying assembly 3 comprises a spraying pipe 31 and a spraying nozzle 32, the spraying pipe 31 is arranged in the cavity 1, and the spraying nozzle 32 is arranged at the end of the spraying pipe 31.

[0033] As in the first specific structure, as shown in the accompanying drawings, the spraying assembly 3 comprises a spraying pipe 31 and a spraying nozzle 32, the spraying pipe 31 is arranged in the cavity 1, and the spraying nozzle 32 is arranged at the end of the spraying pipe 31. Figure 3 ​​​As shown, the rotation direction of the moving blade 21 at the feed inlet 11 is opposite to the inner bottom surface of the feed inlet 11. Therefore, the inner bottom surface of the feed inlet 11 is the surface of the feed inlet 11 used to hold the material to be crushed, and the top surface of the fixed plate 12 along the height direction of the cavity 1 is the surface used to hold the material to be crushed. That is, the top surface of the fixed plate 12 along the height direction of the cavity 1 and the inner bottom surface of the feed inlet 11 are smoothly connected.

[0034] In another specific structure (not shown in the figure), the rotation direction of the moving blade 21 at the feed inlet 11 is opposite to the inner top surface of the feed inlet 11. Therefore, the inner top surface of the feed inlet 11 is the surface used to hold the material to be crushed, and the bottom surface of the fixed plate 12 along the height direction of the cavity 1 is the surface used to hold the material to be crushed. That is, the bottom surface of the fixed plate 12 along the height direction of the cavity 1 and the inner top surface of the feed inlet 11 are smoothly connected. The first structural scheme is preferred over the second.

[0035] like Figure 3 As shown, rotor 2 is a component with a rotating function, rotatably mounted on cavity 1 via bearings or bushings. The portion of rotor 2 located outside cavity 1 is used for transmission connection with the rotary drive device 6, as shown below. Figure 4 As shown, at least one moving blade 21 is provided in the part of the rotor 2 located in the cavity 1. The moving blade 21 is spaced apart from the fixed plate 12. The minimum distance between the moving blade 21 and the fixed plate 12 (i.e., the distance between the moving blade 21 and the fixed plate 12 when the moving blade 21 is rotated to the closest position to the fixed plate 12) is 0.2mm to 1mm. Specifically, the minimum distance between the moving blade 21 and the fixed plate 12 is any one or any two values ​​of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1mm.

[0036] Specifically, such as Figure 4 As shown, the moving blades 21 are arranged circumferentially on the rotor 2. The number of moving blades 21 is 1 to 10. The number of moving blades 21 can be any one or any two of the following values: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. Preferably, there are 6 moving blades.

[0037] It should be noted that, as Figure 5 As shown, the moving blade 21 can extend along the axial direction of the rotor 2, and the moving blade 21 can also extend along the axial direction of the rotor 2 and extend circumferentially along the shaft 23. This scheme can reduce the driving force of the drive device.

[0038] The rotating speed of the rotor 2 is 300 rpm-800 rpm, specifically, the rotating speed of the rotor 2 is any one value or a range between any two values of 300 rpm, 350 rpm, 400 rpm, 450 rpm, 500 rpm, 550 rpm, 600 rpm, 650 rpm, 700 rpm, 750 rpm and 800 rpm, of course, the rotating speed of the rotor 2 can also be set to other ranges according to specific needs.

[0039] As shown in Figure 4 , the spraying assembly 3 is installed in the cavity 1 by bolted connection, the spraying head 31 of the spraying assembly 3 faces the fixed plate 12 and the moving knife 21, and the spraying assembly 3 is used for spraying cleaning liquid.

[0040] In a specific use process, as shown in Figures 3 to 5 , the rotor 2 is drivingly connected with the rotating driving device 6, so that the moving knife 21 rotates in the cavity 1, and the moving knife 21 is arranged in a spaced manner with the fixed plate 12, before crushing the material to be crushed, the spraying device is opened first, the moving knife 21 is sprayed with cleaning liquid, then the material to be crushed (generally continuous plate-shaped, and semi-molten body with soft and flexible) enters the cavity 1 through the feeding port 11, and under the support of the fixed plate 12, the material to be crushed is crushed under the cutting of the moving knife 21.

[0041] In this embodiment, as shown in Figures 1 to 5 , the fixed plate 12 is arranged in the cavity 1 to support the material which is soft and has flexibility and semi-molten, and the cleaning liquid sprayed by the spraying assembly 3 is used to prevent the crushed material from being adhered to the inner wall of the cavity 1 and other components (such as the moving knife 21 and the fixed plate 12, etc.) in the cavity 1, so as to realize the crushing of the semi-molten material which is soft and has flexibility.

[0042] In one embodiment, as shown in Figure 8 , the moving knife 21 has a plurality of first blade portions 211 and a plurality of second blade portions 212, the plurality of first blade portions 211 and the plurality of second blade portions 212 are arranged in sequence and alternately along the axial direction of the rotor 2, the first blade portion 211 and the second blade portion 212 are arranged in a staggered manner along the radial direction of the rotor 2, that is, the first blade portion 211 and the second blade portion 212 have a height difference along the radial direction of the rotor 2, the height difference is 0.2 mm-0.8 mm, specifically, the height difference can be any one value or a range between any two values of 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm and 0.8 mm, and preferably 0.5 mm.

[0043] Specifically, as shown in Figure 8As shown, the number of first cutting edge parts 211 is 2-6, and in a detailed scheme, the number of first cutting edge parts 211 can be any one value or a range between any two values selected from 2, 3, 4, 5, and 6; the number of second cutting edge parts 212 is 2-6, and in a detailed scheme, the number of second cutting edge parts 212 can be any one value or a range between any two values selected from 2, 3, 4, 5, and 6; wherein the number of first cutting edge parts 211 is one more than the number of second cutting edge parts 212, or the number of first cutting edge parts 211 is one less than the number of second cutting edge parts 212, or the number of first cutting edge parts 211 is the same as the number of second cutting edge parts 212.

[0044] In a specific use process, as shown in Figure 4 and Figure 8 As shown, since the first cutting edge part 211 and the second cutting edge part 212 are arranged in a radial direction offset manner along the rotor 2, during the cutting and crushing process of the material to be crushed by the moving knife 21, the first cutting edge part 211 and the second cutting edge part 212 always cut the material to be crushed at different positions along the radial direction of the rotor 2, and since the first cutting edge part 211 and the second cutting edge part 212 are arranged in an axial direction alternating manner along the rotor 2, the material to be crushed can be cut into a sheet-shaped material, specifically, the length of the sheet-shaped material is the size of the first cutting edge part 211 or the second cutting edge part 212 along the axial direction of the rotor 2, and the width of the sheet-shaped material is the thickness of the material to be crushed.

[0045] In this embodiment, as shown in Figure 8 A plurality of first cutting edge parts 211 and a plurality of second cutting edge parts 212 are arranged in an axial direction alternating manner along the rotor 2, the first cutting edge part 211 and the second cutting edge part 212 are arranged in a radial direction offset manner along the rotor 2, which can crush the material to be crushed into a sheet-shaped material, facilitating subsequent processing.

[0046] In one embodiment, as shown in Figure 4 A third cutting edge part 121 is arranged on the fixed plate 12 close to the moving knife 21 and close to the edge of the material to be crushed; in this embodiment, the arrangement of the third cutting edge part 121 can cooperate with the moving knife 21 to improve the cutting and crushing effect and efficiency.

[0047] In one embodiment, as shown in Figure 3 The spraying assembly 3 includes a spraying pipe 32 and a plurality of spraying heads 31, the spraying pipe 32 extends along the axial direction of the rotor 2 and is fixed to the inner top of the cavity 1 by bolt connection, the plurality of spraying heads 31 are arranged on the spraying pipe 32 in an axial direction interval manner along the rotor 2, specifically, the spraying pipe 32 is arranged with a plurality of liquid outlets in an axial direction interval manner along the rotor 2, the liquid outlet is embedded with a nut, the input port of the spraying head 31 is provided with an external thread, and the input port of the spraying head 31 is connected to the liquid outlet of the spraying pipe 32 in a screwing manner.

[0048] Specifically, the cleaning liquid sprayed by the spray head 31 can be in a fan-shaped diffusion or a cylindrical shape, and is preferably in a fan-shaped diffusion.

[0049] The spray head 31 can be a high-pressure spray head, which can improve the cleaning strength of the cleaning liquid on each part and each component in the cavity 1, improve the cleaning effect, and prevent problems such as adhesion.

[0050] In this embodiment, as shown in Figure 3 , the spray pipe 32 extends along the axial direction of the rotor 2, and a plurality of spray heads 31 are arranged on the spray pipe 32 along the axial direction of the rotor 2, which can improve the uniformity of the cleaning liquid sprayed in the cavity 1, thereby improving the overall cleaning degree of each part and component in the cavity 1.

[0051] In one embodiment, as shown in Figure 1 , the cavity 1 is provided with an air inlet 13, and the air inlet 13 is arranged on the cavity 1 away from the discharge port 14. Preferably, the air inlet 13 is arranged on the inner top of the cavity 1. The air inlet 13 is used to input a protective gas into the cavity 1, and the protective gas is a gas that does not react with the material to be crushed, such as nitrogen. The feed inlet 11 is in sealed communication with the output port of the material input device, and the feed inlet 11 and the output port of the material input device are sealed by a rubber pad or other elastic components.

[0052] In a specific structure, not shown in the figure, the air inlet 13 is connected with a rotary spray head, which is used to spray gas in rotation at the beginning of the protective gas input into the cavity 1, to remove other gases in the corners of the cavity 1, and to improve the purity of the protective gas in the cavity 1. Specifically, the rotary spray head can be meshed and driven by a gear, and the gear is driven and connected by a motor located outside the cavity 1.

[0053] In a specific use process, as shown in Figure 1 and 3 , before the material to be crushed enters the cavity 1, the air inlet 13 is opened to input a certain amount of protective gas, such as nitrogen, into the cavity 1 for a certain period of time. After the purity of the protective gas in the cavity 1 reaches a certain concentration, the rotary drive device is started to drive the rotor 2 to rotate, and the material to be crushed is input into the cavity 1.

[0054] In this embodiment, as shown in Figure 1 , the air inlet 13 is arranged on the cavity 1 to input the protective gas into the cavity 1, which can prevent the material to be crushed from reacting with some gases (such as oxygen) in the air after being crushed, thereby preventing the material from being contaminated and affecting the purity of the material.

[0055] In one embodiment, as shown in Figure 4 ,Figure 5 and Figure 6 As shown in

[0056] In this embodiment, as shown in Figure 5 and Figure 6 The setting of the filter screen 4 can filter and select the crushed materials, and the materials with a larger size are retained in the crushing cavity for secondary crushing.

[0057] In a specific embodiment, as shown in Figure 4 and Figure 5 The filter screen 4 is located between any two fixed plates 12. Specifically, a plurality of fixed parts corresponding to the plurality of fixed plates 12 are arranged in the cavity 1. At least one of the fixed plate 12 and the fixed part is provided with an oblong hole, and the fixed plate 12 and the fixed part are connected through the oblong hole structure, which can facilitate the adjustment of the distance between the fixed plate 12 and the moving knife 21.

[0058] In an embodiment, as shown in Figure 3 The first end of the rotor 2 is provided with an axial limiting part 22, which is rotationally limited with the cavity 1. The second end of the rotor 2 is rotationally connected with the cavity 1. Specifically, the cavity 1 is provided with a bearing seat, and a bearing is embedded in the bearing seat. The axial limiting part 22 is a stepped surface, which is in contact with one end surface of the inner ring of the bearing. A limiting ring is arranged at the other end surface of the inner ring of the bearing, and the limiting ring is clamped with the rotor 2.

[0059] In the specific use process, as shown in Figure 3 As shown in

[0060] In this embodiment, as shown in Figure 3 The first end of the rotor 2 is provided with an axial limiting part 22, which is rotationally limited with the cavity 1. The second end of the rotor 2 is rotationally connected with the cavity 1, which can prevent the rotor 2 from being stuck and improve its applicability.

[0061] In one embodiment, as shown in Figure 5 and Figure 7 , the rotor 2 comprises a rotating shaft 23 and a plurality of connecting plates 24 coaxially arranged on the rotating shaft 23 along the axial direction of the rotating shaft 23, the connecting plates 24 have at least one connecting portion 18 on the outer periphery, and the moving knife 21 extends along the axial direction of the rotating shaft 23 and is connected with the connecting portions 18 on the plurality of connecting plates 24.

[0062] Specifically, the distance between adjacent connecting plates 24 is 20-40 mm, and in a detailed scheme, the distance between adjacent connecting plates 24 can be any one value or a range between any two values selected from 20 mm, 25 mm, 30 mm, 35 mm and 40 mm.

[0063] The thickness of the connecting plate 24 is 20-40 mm, and in a detailed scheme, the thickness of the connecting plate 24 can be any one value or a range between any two values selected from 20 mm, 25 mm, 30 mm, 35 mm and 40 mm.

[0064] In this embodiment, as shown in Figure 5 , the plurality of connecting plates 24 arranged along the axial direction of the rotor 2 are used to fix the moving knife 21, which can facilitate the secondary crushing of the crushed material and reduce the weight of the rotor 2 and the cost.

[0065] In one embodiment, as shown in Figure 1 , the crushing device further comprises a fixed seat and a rotary driving device 6, specifically, the fixed seat is a frame welded by a steel plate, the rotary driving device 6 and the cavity 1 are arranged on the fixed seat by bolt screwing or welding, the output shaft of the rotary driving device 6 is coaxially transmitted with the rotating shaft 23 by spline fitting, and the rotary driving device 6 is a variable frequency driving device, specifically a variable frequency motor.

[0066] In this embodiment, as shown in Figure 1 , the cavity 1 and the rotary driving device 6 are fixed on the fixed frame 5, which can improve the relative position stability of the rotary driving device 6 and the cavity 1 and reduce the noise of the crushing device in operation; the rotary driving device 6 is a variable frequency driving device, which can facilitate the adjustment of the rotating speed and be suitable for different use scenarios.

[0067] In one embodiment, a crushing device is provided, as shown in Figures 1 to 4 , comprising a cavity 1, a rotor 2 and a spraying assembly 3, and the specific scheme is as follows.

[0068] As shown in Figure 1 and 3As shown, the cavity 1 is cuboid or cylindrical, etc., the cavity 1 includes a top cover 15, a middle shell 16 and a bottom shell 17, the middle shell 16 is open on both sides, the top cover 15 covers the opening on the upper side of the middle shell 16, and the bottom shell 17 blocks the opening on the lower side of the middle shell 16. The middle shell 16 is provided with a feed port 11, and the bottom shell 17 is provided with a discharge port 14.

[0069] As shown in Figure 1 , the cavity 1 has a feed port 11, the shape of the feed port 11 is rectangular, trapezoidal or other shapes, preferably rectangular; as shown in Figure 3 , at least one fixed plate 12 is fixedly arranged in the cavity 1 by bolt connection or clamping; the fixed plate 12 is used for the transition connection of the surface for carrying the material to be crushed with the surface for carrying the material to be crushed of the feed port 11. Specifically, the number of fixed plates 12 can be one or more, such as 1-4, preferably 2.

[0070] It should be noted that the fixed plate 12 is used for smooth transition connection or smooth transition connection of the surface for carrying the material to be crushed with the surface for carrying the material to be crushed of the feed port 11, wherein the smooth transition connection refers to that the two surfaces are connected in a plane, and the smooth transition connection refers to that the two surfaces are connected in a circular arc shape.

[0071] The surface for carrying the material to be crushed of the fixed plate 12 is opposite to the surface of the fixed plate 12 opposite to the rotating direction of the moving knife 21 at the feed port 11; the surface for carrying the material to be crushed of the feed port 11 specifically refers to the inner surface of the inner wall surface of the feed port 11 opposite to the rotating direction of the moving knife 21 at the feed port 11.

[0072] In a specific structure, as shown in Figure 3 , the rotating direction of the moving knife 21 at the feed port 11 is opposite to the inner bottom surface of the feed port 11, so the inner bottom surface of the feed port 11 is the surface for carrying the material to be crushed, and the top surface of the fixed plate 12 along the height direction of the cavity 1 is the surface for carrying the material to be crushed, that is, the top surface of the fixed plate 12 along the height direction of the cavity 1 is connected with the inner bottom surface of the feed port 11 in a smooth transition connection.

[0073] As shown in Figure 3 , the rotor 2 is a component with rotating function, which is rotatably arranged on the cavity 1 through bearing or bush, and the part of the rotor 2 located outside the cavity 1 is used for transmission connection with the rotating driving device 6, such as Figure 4As shown in the figure, the part where the rotor 2 is located in the cavity 1 is provided with at least one moving knife 21, and the moving knife 21 is spaced apart from the fixed plate 12. The minimum distance between the moving knife 21 and the fixed plate 12 (i.e. the distance between the moving knife 21 and the fixed plate 12 when the moving knife 21 rotates to the closest position of the fixed plate 12) is 0.2mm~1mm. Specifically, the minimum distance between the moving knife 21 and the fixed plate 12 can be any one value or a range between any two values selected from 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1mm.

[0074] Specifically, as shown in the figure, Figure 4 The moving knife 21 is arranged in the circumferential direction of the rotor 2. The number of moving knives 21 can be 1~10. Specifically, the number of moving knives 21 can be any one value or a range between any two values selected from 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. Preferably, the number of moving knives 21 is 6.

[0075] It should be noted that, as shown in the figure, Figure 5 The moving knife 21 can extend in the axial direction of the rotor 2. Alternatively, the moving knife 21 can extend in the axial direction of the rotor 2 and extend in the circumferential direction of the rotating shaft 23. This arrangement can reduce the driving force of the driving device.

[0076] The rotating speed of the rotor 2 is 300rpm~800rpm. Specifically, the rotating speed of the rotor 2 can be any one value or a range between any two values selected from 300rpm, 350rpm, 400rpm, 450rpm, 500rpm, 550rpm, 600rpm, 650rpm, 700rpm, 750rpm and 800rpm. Alternatively, the rotating speed of the rotor 2 can be set to other ranges according to specific requirements.

[0077] As shown in the figure, Figure 4 The spraying assembly 3 is installed in the cavity 1 by screwing. The spraying head 31 of the spraying assembly 3 faces the fixed plate 12 and the moving knife 21. The spraying assembly 3 is used to spray cleaning liquid.

[0078] Further specifically, as shown in the figure, Figure 8 The moving knife 21 has a plurality of first knife edge portions 211 and a plurality of second knife edge portions 212. The plurality of first knife edge portions 211 and the plurality of second knife edge portions 212 are arranged alternately in the axial direction of the rotor 2. The first knife edge portion 211 and the second knife edge portion 212 are arranged in a staggered manner in the radial direction of the rotor 2, i.e. the first knife edge portion 211 and the second knife edge portion 212 have a height difference in the radial direction of the rotor 2. The height difference is 0.2mm~0.8mm. Specifically, the height difference can be any one value or a range between any two values selected from 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm and 0.8mm. Preferably, the height difference is 0.5mm.

[0079] Specifically, as shown in Figure 8 the number of the first cutting edge parts 211 is 2-6, in a detailed scheme, the number of the first cutting edge parts 211 can be any one value or a range between any two values of 2, 3, 4, 5 and 6; the number of the second cutting edge parts 212 is 2-6, in a detailed scheme, the number of the second cutting edge parts 212 can be any one value or a range between any two values of 2, 3, 4, 5 and 6; wherein, the number of the first cutting edge parts 211 is one more than the number of the second cutting edge parts 212, or the number of the first cutting edge parts 211 is one less than the number of the second cutting edge parts 212, the number of the first cutting edge parts 211 is the same as the number of the second cutting edge parts 212.

[0080] Further specifically, as shown in Figure 4 the edge of the fixed plate 12 close to the moving knife 21 and close to the material to be crushed is provided with a third cutting edge part 121; in this embodiment, the third cutting edge part 121 can work with the moving knife 21 to improve the cutting and crushing effect and efficiency.

[0081] Further specifically, as shown in Figure 3 the spraying assembly 3 includes a spraying pipe 32 and a plurality of spraying heads 31, the spraying pipe 32 extends along the axial direction of the rotor 2 and is fixed to the inner top of the cavity 1 by bolt connection, and the plurality of spraying heads 31 are arranged on the spraying pipe 32 along the axial direction of the rotor 2, specifically, the spraying pipe 32 is provided with a plurality of liquid outlets along the axial direction of the rotor 2, the liquid outlets are embedded with nuts, the input port of the spraying head 31 is provided with external threads, and the input port of the spraying head 31 is connected with the liquid outlet of the spraying pipe 32 by screwing.

[0082] Specifically, the cleaning liquid sprayed by the spraying head 31 can be in a fan-shaped diffusion shape or a cylindrical shape, and is preferably in a fan-shaped diffusion shape.

[0083] The spraying head 31 can be a high-pressure spraying head, which can improve the cleaning intensity of the cleaning liquid on each part and each component in the cavity 1, improve the cleaning effect, and prevent problems such as sticking.

[0084] Further specifically, as shown in Figure 1 the cavity 1 is provided with an air inlet 13, specifically, the air inlet 13 is arranged on the cavity 1 away from the discharge port 14, preferably, the air inlet 13 is arranged on the inner top of the cavity 1, the air inlet 13 is used for inputting protective gas into the cavity 1, the protective gas is specifically a gas such as nitrogen that does not react with the material to be crushed, and the feeding port 11 is used for sealing communication with the output port of the material input device, specifically, the feeding port 11 and the output port of the material input device are sealed by a rubber pad or other elastic components.

[0085] Further specifically, as shown in Figure 4 , Figure 5 and Figure 6 , the crushing device further comprises a filter screen 4, the cavity 1 is provided with a discharge port 14, and the filter screen 4 is arranged at the discharge port 14. Specifically, the filter screen 4 is a plate body, and a plurality of filter holes are arranged on the plate body. The filter holes can be round holes or rectangular holes, and are preferably rectangular holes. The rectangular holes have good passability, which can facilitate the passage of the crushed materials. The opening size of the filter holes can be selected and set according to actual needs.

[0086] Further specifically, as shown in Figure 4 and Figure 5 , the fixed plate 12 is a plurality of fixed plates 12, and the plurality of fixed plates 12 are arranged at intervals along the circumference of the rotor 2. The filter screen 4 is located between any two fixed plates 12. Specifically, a plurality of fixed parts are arranged in the cavity 1, and each fixed part corresponds to a fixed plate 12. At least one of the fixed plate 12 and the fixed part is provided with an oblong hole, and the fixed plate 12 and the fixed part are connected through the oblong hole structure, which can facilitate the adjustment of the distance between the fixed plate 12 and the moving knife 21.

[0087] Further specifically, as shown in Figure 3 , the first end of the rotor 2 is provided with an axial limiting part 22, and the axial limiting part 22 is rotationally limited and matched with the cavity 1. The second end of the rotor 2 is rotationally matched with the cavity 1. Specifically, the cavity 1 is provided with a bearing seat, and a bearing is embedded in the bearing seat. The axial limiting part 22 is a stepped surface, and the stepped surface is in contact with one end surface of the inner ring of the bearing. A limiting ring is arranged at the other end surface of the inner ring of the bearing, and the limiting ring is clamped with the rotor 2.

[0088] Further specifically, as shown in Figure 5 and Figure 7 , the rotor 2 comprises a rotating shaft 23 and a plurality of connecting discs 24. The plurality of connecting discs 24 are coaxially arranged on the rotating shaft 23 at intervals along the axial direction of the rotating shaft 23. The outer periphery of the connecting disc 24 has at least one connecting part 18. The moving knife 21 extends along the axial direction of the rotating shaft 23 and is connected with the connecting part 18 on the plurality of connecting discs 24.

[0089] Specifically, the distance between adjacent connecting discs 24 is 20mm-40mm. In a detailed scheme, the distance between adjacent connecting discs 24 can be any one value or a range between any two values selected from 20mm, 25mm, 30mm, 35mm and 40mm.

[0090] The thickness of the connecting disc 24 is 20mm-40mm. In a detailed scheme, the thickness of the connecting disc 24 can be any one value or a range between any two values selected from 20mm, 25mm, 30mm, 35mm and 40mm.

[0091] Further specifically, as shown in Figure 1As shown, the crushing device further comprises a fixed seat and a rotary driving device 6, specifically, the fixed seat is a frame body welded by steel plates, the rotary driving device 6 and the cavity 1 are arranged on the fixed seat in a bolted manner or a welded manner, the output shaft of the rotary driving device 6 is coaxially transmitted with the rotating shaft 23 in a spline fitting manner, and the rotary driving device 6 is a variable frequency driving device, specifically, a variable frequency motor.

[0092] The crushing device in the embodiment is suitable for crushing soft and tough materials, i.e., is suitable for crushing low alcoholysis degree polyvinyl alcohol.

[0093] In the crushing process of the low alcoholysis degree polyvinyl alcohol, the cleaning agent is methanol, which can not only clean the cavity 1 and the components in the cavity 1, but also remove impurities in the low alcoholysis degree polyvinyl alcohol, so as to improve the purity of the low alcoholysis degree polyvinyl alcohol.

[0094] According to the embodiment of the present application, on the other hand, a production line body is provided, comprising the crushing device in any one of the above embodiments.

[0095] Specifically, the production line body can be a line body for producing low alcoholysis degree polyvinyl alcohol, and of course can also be a line body for producing other materials.

[0096] In this embodiment, because the production line body comprises the crushing device, has the same technical effects as the crushing device, and will not be described here.

[0097] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A pulverizing apparatus characterized by comprising: The utility model relates to a kind of pulverizer, including: Cavity (1), the cavity (1) has feed inlet (11), at least one fixed plate (12) is provided in the cavity (1), the fixed plate (12) is used to with the face of carrying the material to be pulverized, with the feed inlet (11) for carrying the face of material to be pulverized Transition interface; Rotor (2), rotation is arranged in the cavity (1), the part of rotor (2) in the cavity (1) is provided with at least one moving knife (21), the moving knife (21) is spaced apart with the fixed plate (12) cooperation; Spray assembly (3) is located in the cavity (1), and the spray head (31) of the spray assembly (3) is towards the fixed plate (12) and the moving knife (21).

2. The pulverization apparatus according to claim 1, characterized by The spray assembly (3) includes a plurality of spray heads (31) and a spray pipe (32), the spray pipe (32) extends along the axial direction of the rotor (2), and the plurality of spray heads (31) are arranged on the spray head (31) in the axial direction of the rotor (2).

3. The pulverization apparatus according to claim 1, characterized by The moving knife (21) has a plurality of first cutting edges (211) and a plurality of second cutting edges (212), the plurality of first cutting edges (211) and the plurality of second cutting edges (212) are sequentially and alternately arranged in the axial direction of the rotor (2), and the first cutting edges (211) and the second cutting edges (212) are arranged in the radial direction of the rotor (2). And / or, the fixed plate (12) is provided with a third cutting edge (121) near the moving knife (21) and near the edge of the material to be pulverized.

4. The pulverizing apparatus according to any one of claims 1 to 3, characterized by The cavity (1) is provided with an air inlet (13) for inputting protective gas into the cavity (1), and the feed inlet (11) is used for sealing communication with the output port of the material input device.

5. The pulverizing apparatus according to any one of claims 1 to 3, characterized by Further comprising a filter screen (4), the cavity (1) is provided with a discharge port (14), and the filter screen (4) is arranged at the discharge port (14).

6. The comminution apparatus of claim 5, wherein, The fixed plate (12) is a plurality of fixed plates (12), and the plurality of fixed plates (12) are arranged in the circumferential direction of the rotor (2), and the filter screen (4) is located between any two fixed plates (12).

7. The pulverizing apparatus according to any one of claims 1 to 3, characterized by The first end of the rotor (2) is provided with an axial limiting portion (22), the axial limiting portion (22) is rotationally limited with the cavity (1), and the second end of the rotor (2) is rotationally limited with the cavity (1).

8. The pulverizing apparatus according to any one of claims 1 to 3, characterized by The rotor (2) includes a shaft (23) and a plurality of connecting discs (24), the plurality of connecting discs (24) are coaxially arranged on the shaft (23) in the axial direction of the shaft (23), the connecting disc (24) has at least one connecting portion (18) on the outer periphery, the moving knife (21) extends in the axial direction of the shaft (23), and is connected with the connecting portion (18) on the plurality of connecting discs (24).

9. The comminution apparatus of claim 8, wherein, Further comprising a fixed seat and a rotary drive device (6), the rotary drive device (6) and the cavity (1) are arranged on the fixed seat, the output shaft of the rotary drive device (6) is coaxially driven with the shaft (23), and the rotary drive device (6) is a variable frequency drive device.

10. A production line body characterized by, Including: A pulverization apparatus as claimed in any one of claims 1 to 9.

Images