Granulation device

Abstract

The invention discloses a granulation device, and relates to the field of granulators, the granulation device comprises a feed hopper and a granulation cylinder communicated with the feed hopper, the granulation cylinder is in threaded connection with a sleeve, a screen is arranged in the sleeve, a cutter is arranged in the granulation cylinder, and the cutter is located on the movement stroke of the screen; a pressure detection mechanism is arranged on the screen, and a locking mechanism is arranged between the screen and the sleeve; and the position of the screen is locked through a locking mechanism based on the numerical value of the pressure detection mechanism. According to the granulation device provided by the invention, when the pressure detection mechanism detects that the acting force between the screen and the cutter is large enough, the relative position between the screen and the sleeve is locked through the locking mechanism, so that the screen can be maintained at the position; therefore, screen mesh abrasion, cutter abrasion and motor overload caused by overlarge acting force between the cutter and the screen mesh can be avoided as much as possible.

Description

Technical Field

[0001] The invention relates to the field of granulators, in particular to a granulating device. Background Art

[0002] As is known, a multi-color granulator is a processing device for coatings. Since the coating itself is tough, it is easy to clog spray guns and other equipment when spraying on building walls. Therefore, the tough coating needs to be cut off by a cutter in the granulator.

[0003] For example, the Chinese patent document with the authorization announcement number CN213761711U, the announcement date 2021-07-23, and the name "A combined multi-color paint granulator" includes a hopper, a barrel with a feed port on the side and a discharge port at the bottom, a connecting pipe for connecting the hopper and the feed port, and also includes a motor, a spiral shaft, a transmission shaft, a cutter and a screen. The motor, the barrel, the spiral shaft, the transmission shaft, the cutter and the screen are a group of granulation units, and the granulation unit At least two groups, each two groups of granulating units are connected by a feed elbow, the feed end of the feed elbow is connected to the discharge port of one group of granulating units, and the discharge end of the feed elbow is connected to the feed port of another granulating unit. The screen aperture of the granulating unit connected to the discharge end of the feed elbow is smaller than the screen aperture of the granulating unit connected to the feed end of the feed elbow. By configuring a separate motor when performing granulation of finer particles, the efficiency of the colorful paint granulator is improved while reducing the motor load.

[0004] The disadvantage of the above-mentioned prior art is that the cutter and the screen are fitted together by the elastic force of the spring, so the problem is that the cutter will float along the axial direction of the spiral shaft, so that the length of the cut paint varies. If the screen and the cutter are tightly fitted together by a threaded connection, if the force during rotation cannot be accurately controlled, the force between the screen and the cutter will be large, thereby making the friction force when the cutter rotates large. On the one hand, it is easy to cause wear of the screen and the cutter, and on the other hand, it will increase the load of the motor. Summary of the invention

[0005] The object of the present invention is to provide a granulation device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A granulation device comprises a feed hopper and a granulation cylinder connected to the feed hopper, wherein a sleeve is threadedly connected to the granulation cylinder, a screen is arranged in the sleeve, a cutter is arranged in the granulation cylinder, and the cutter is located on the movement stroke of the screen; a pressure detection mechanism is arranged on the screen, and a locking mechanism is arranged between the screen and the sleeve; the position of the screen is locked by the locking mechanism based on the value of the pressure detection mechanism.

[0008] In the above-mentioned granulation device, the pressure detection mechanism includes a first spring, a connecting cylinder is fixedly connected to the screen, the connecting cylinder is slidably connected to the sleeve, and the first spring is arranged between the connecting cylinder and the sleeve.

[0009] In the above-mentioned granulation device, a sealing portion is provided on the sleeve.

[0010] In the above-mentioned granulation device, the locking mechanism comprises a locking block, the locking block is slidably connected to the screen, and a second spring is arranged between the locking block and the screen, the sleeve is provided with an inner snapping groove, and the locking block is provided with an outer snapping groove;

[0011] When the inner snap-in groove of the sleeve is snap-fitted with the outer snap-in groove of the locking block, the position of the screen is locked.

[0012] The above-mentioned granulation device also includes a limiting component for fixing the position of the locking block.

[0013] In the above-mentioned granulation device, the limiting assembly includes a pin rod, the screen and the locking block are both provided with locking holes adapted to the pin rod, and the pin rod is plugged into the locking hole.

[0014] In the above-mentioned granulation device, a connecting rod is fixedly arranged between the pin rod and the sleeve.

[0015] In the above-mentioned granulation device, a sealing ring is arranged on the screen, a sealing groove is arranged on the granulation cylinder, and the sealing ring is plugged into the sealing groove.

[0016] The above-mentioned granulation device also includes a conveying mechanism for conveying paint, and the conveying mechanism includes a driving motor and a screw conveying rod connected to the output end of the driving motor, and the screw conveying rod is arranged in the granulation barrel.

[0017] In the above-mentioned granulation device, the cutter is fixedly connected to the spiral conveying rod.

[0018] In the above technical scheme, the present invention provides a granulation device, in which a pressure detection mechanism is arranged on the screen, and a locking mechanism is arranged between the screen and the sleeve. By rotating the sleeve, the screen is abutted against the cutter. When the pressure detection mechanism detects that the force between the screen and the cutter is large enough, the relative position between the screen and the sleeve is locked by the locking mechanism, so that the screen can be maintained in this position, thereby minimizing screen wear, cutter wear and motor overload caused by excessive force between the cutter and the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 A side structural schematic diagram provided for another embodiment of the present invention;

[0022] Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure at aa in the middle;

[0023] Figure 4 A schematic diagram of a connection structure between a spiral conveying rod and a cutter provided in yet another embodiment of the present invention;

[0024] Figure 5 for Figure 3 A schematic diagram of the enlarged local structure at center A;

[0025] Figure 6 for Figure 3 Enlarged schematic diagram of the local structure at point B in the middle.

[0026] Description of reference numerals:

[0027] 1. Feed hopper; 2. Granulating cylinder; 3. Sleeve; 4. Screen; 5. Cutter; 6. First spring; 7. Connecting cylinder; 701. First section; 702. Second section; 8. Sealing part; 9. Locking block; 10. Second spring; 11. Protruding ring; 12. T-slot; 13. Pin rod; 14. Locking hole; 15. Connecting rod; 16. Sealing ring; 17. Sealing groove; 18. Driving motor; 19. Screw conveying rod; 20. Socket; 21. Connecting part; 22. Lifting groove; 23. Connecting part; 24. Avoiding groove. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it is necessary to understand that Figure 2 The position of the middle drive motor 18 relative to the granulation barrel 2 is up, and vice versa. The terms "center", "longitudinal", "lateral", "length", "width", "degree", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Reference Figure 1-6 A granulation device according to an embodiment of the present invention comprises a feed hopper 1 and a granulation cylinder 2 connected to the feed hopper 1, a sleeve 3 is threadedly connected to the granulation cylinder 2, a screen 4 is arranged in the sleeve 3, a cutter 5 is arranged in the granulation cylinder 2, and the cutter 5 is located on the movement stroke of the screen 4; a pressure detection mechanism is arranged on the screen 4, and a locking mechanism is arranged between the screen 4 and the sleeve 3; the position of the screen 4 is locked by the locking mechanism based on the value of the pressure detection mechanism.

[0031] Specifically, the granulation cylinder 2 is arranged vertically, and the feed hopper 1 is funnel-shaped, with a bending cylinder at the bottom thereof, which is connected to the internal space of the granulation cylinder 2, and the cutter 5 is arranged inside the granulation cylinder 2, and the cutter 5 is in contact with the surface of the screen 4, and the coating is transported to the position of the screen 4 through a conveying component, and an extrusion force is provided to allow the coating to pass through the mesh of the screen 4. At the same time, the cutter 5 is controlled to rotate at a uniform speed, so that the coating can be cut off from the upper surface of the screen 4, and under the action of the extrusion force and gravity, the coating is separated from the holes of the screen 4, so that the coating is almost equidistantly cut to achieve the granulation effect. This is a prior art and will not be described in detail (see the patent document with announcement number CN213761711U for details). One of the core innovations of the embodiment of the present invention is that the screen 4 is arranged on the sleeve 3, and the cutter 5 is fixedly arranged in the granulation cylinder 2, and on the screen 4 A pressure detection mechanism is provided (which may be a pressure sensor for detecting the squeezing pressure of the screen 4 on the cutter 5), and a locking mechanism is provided between the screen 4 and the sleeve 3 (which may be a connecting part 23 such as a pin or a bolt). The purpose of such a setting is that when the screen 4 is installed, the sleeve 3 will drive the screen 4 to move upward by rotating the sleeve 3. During this process, the screen 4 will abut against the cutter 5, so that the screen 4 cannot continue to move upward. At this time, the sleeve 3 continues to be rotated, so that the force between the screen 4 and the cutter 5 gradually increases. When the pressure detection mechanism detects that the force between the screen 4 and the cutter 5 is large enough, the relative position between the screen 4 and the sleeve 3 is locked by the locking mechanism, so that the screen 4 can be maintained in this position, thereby minimizing the wear of the screen 4, the wear of the cutter 5 and the motor overload caused by the excessive force between the cutter 5 and the screen 4.

[0032] As an alternative to the above-mentioned pressure sensor, the pressure detection mechanism includes a first spring 6, a connecting tube 7 is fixedly connected to the screen 4, the connecting tube 7 is slidably connected to the sleeve 3, and the first spring 6 is arranged between the connecting tube 7 and the sleeve 3. Specifically, the cross-section of one half of the sleeve 3 is C-shaped (the other half is also symmetrically C-shaped), and its inner wall close to the top is threadedly connected to the outer wall of the granulation cylinder 2, and the sleeve 3 can be connected to the granulation cylinder 2 by rotation. The connecting tube 7 is fixed to the lower surface of the screen 4, and the connecting tube 7 and the screen 4 are coaxially arranged. The radial dimension of the connecting tube 7 is larger than the radial dimension of the screening area of ​​the screen 4. The bottom end of the connecting tube 7 is provided with a circular outer flange, and one end of the first spring 6 is fixed to the lower surface of the outer flange. , the other end is fixed to the inner bottom wall of the sleeve 3, and a plurality of first springs 6 are provided, and are arranged in an array about the central axis of the connecting cylinder 7. A slide groove is provided on the inner side wall of the sleeve 3, and a sliding connection part adapted to the slide groove is provided on the outer flange, and the sliding connection part is slidably connected with the slide groove, so that the connecting cylinder 7 and the granulating cylinder 2 can slide relative to each other in the axial direction, but cannot rotate relative to each other. The effect of such a setting is that when installing the screen 4, the sleeve 3 is coaxially arranged with the granulating cylinder 2, and then the sleeve 3 is twisted, so as to 4 and the cutter 5 are in close contact with each other, and the screen ...

[0033] It should be noted that, in order to facilitate the replacement of the screen 4, the screen 4 and the connecting tube 7 can be connected in a detachable manner such as by bolts.

[0034] Furthermore, a sealing portion 8 is provided on the sleeve 3. Specifically, the sealing portion 8 is an annular cylindrical structure, which is provided at the end of the sleeve 3, and in order to reduce the resistance when the coating material descends, the edge position of the top of the sealing portion 8 is arranged at an angle, and the outer peripheral surface of the sealing portion 8 is sealed and connected with the inner peripheral surface of the connecting tube 7. The sealing portion 8 and the connecting tube 7 seal the space inside the sleeve 3 to prevent liquid from entering the sleeve 3, so as to protect the components inside the sleeve 3.

[0035] As another embodiment of the present invention, the locking mechanism includes a locking block 9, which is slidably connected to the screen 4, and a second spring 10 is arranged between the locking block 9 and the screen 4, the sleeve 3 is provided with an inner card groove, and the locking block 9 is provided with an outer card groove, and the outer card groove is adapted to the inner card groove; when the inner card groove of the sleeve 3 is engaged with the outer card groove of the locking block 9, the position of the screen 4 is locked. Specifically, a convex ring portion 11 is provided at the edge of the screen 4, and a T-shaped groove 12 is provided between the convex ring portion 11 and the main body of the screen 4. The cross section of the locking block 9 is also T-shaped, and the end of the locking block 9 away from the T-shaped groove 12 is provided as an arc surface adapted to the inner wall of the sleeve 3. The second spring 10 is provided between the locking block 9 and the T-shaped groove 12, the inner card groove is provided on the inner side wall of the sleeve 3, and the outer card groove is provided on the arc surface of the locking block 9. The inner card groove and the outer card groove are both composed of a plurality of equidistant circular rings, the inner card groove and the outer card groove are arranged alternately, and the inner card groove and the outer card groove are both provided with openings. The effect of such a setting is The point is that when the elastic force of the second spring 10 is released, the locking block 9 will slide toward the outside of the T-slot 12, so that the outer snap-in groove on the arc-shaped surface of the locking block 9 is engaged with the inner snap-in groove of the sleeve 3. As a result, under the action of the engagement between the inner snap-in groove and the outer snap-in groove, the locking block 9 and the screen 4 and other components cannot move axially relative to the sleeve 3. Since the sleeve 3 is threadedly connected to the granulation barrel 2, under the self-locking action of the threaded connection, the screen 4 cannot move axially relative to the granulation barrel 2 and the cutter 5. In this way, the position of the screen 4 can be fixed to minimize axial floating of the screen 4, thereby improving the granulation effect of the coating.

[0036] Furthermore, it also includes a limiting component for fixing the position of the locking block 9. The limiting component can be a structure such as a card block, which abuts against the locking block 9. When the screen 4 is not installed in place, the limiting component limits the locking block 9 in the T-slot 12, and the second spring 10 is in a compressed state at this time, that is, the locking block 9 has only a tendency to slide outside the T-slot 12 at this time.

[0037] Preferably, the limiting assembly includes a pin 13, and the screen 4 and the locking block 9 are both provided with a locking hole 14 adapted to the pin 13, and the pin 13 is plugged into the locking hole 14. Specifically, the locking block 9 and the inner top wall of the T-slot 12 are both provided with a locking hole 14, and when the locking block 9 is inside the T-slot 12, the pin 13 penetrates the top wall of the T-slot 12 and is plugged into the locking hole 14 on the locking block 9, so that the locking block 9 can be limited in the T-slot 12, and when the locking block 9 needs to be ejected, the pin 13 is pulled upward, and when the pin 13 is completely pulled out of the locking hole 14 on the locking block 9, its limiting effect on the locking block 9 disappears, and at this time, the elastic force of the second spring 10 is released, so that the external thread on the locking block 9 is engaged with the internal thread on the sleeve 3 to fix the position of the screen 4.

[0038] Furthermore, a connecting rod 15 is fixedly arranged between the pin 13 and the sleeve 3. Specifically. The connecting rod 15 is fixed on the inner top wall of the sleeve 3, and is arranged vertically, and the bottom end of the connecting rod 15 is fixedly connected to the top end of the pin 13. The purpose of such arrangement is that when the screen 4 is installed, the sleeve 3 is rotated, thereby driving the screen 4 to move upward synchronously. When the screen 4 abuts against the cutter 5, the screen 4 cannot continue to move upward at this time. Continuing to rotate the sleeve 3 will cause the sleeve 3 to move upward relative to the screen 4 and accumulate force for the first spring 6. In this process, the sleeve 3 drives the pin 13 to move upward relative to the screen 4 through the connecting rod 15. When the pin 13 is pulled out of the locking hole 14 of the locking block 9, the squeezing force of the first spring 6 on the screen 4 reaches the maximum value (that is, after exceeding this value, the squeezing force between the screen 4 and the cutter 5 will cause serious wear of the screen 4 and the cutter 5). At this time, the second spring 10 The elastic force is released, causing the locking block 9 to slide toward the inner wall of the sleeve 3, so that the outer card groove of the locking block 9 is passively engaged with the inner card groove of the sleeve 3. When granulation is completed, the sleeve 3 is rotated in the opposite direction to remove the sleeve 3 from the granulation cylinder 2, and the screen 4 is removed together with the sleeve 3, and then the locking block 9 is pushed toward the inside of the T-slot 12, so that the locking hole 14 on the locking block 9 coincides with the locking hole 14 on the T-slot 12. Since the locking block 9 is far away from the sleeve 3 at this time, the limiting effect of the outer card groove and the inner card groove disappears, and the elastic force of the first spring 6 is released, which will drive the screen 4 to move upward relative to the sleeve 3, and make the pin 13 pass through the inner top wall of the T-slot 12 and be inserted into the locking hole 14 on the locking block 9, so as to limit the locking block 9 in the T-slot 12 again for the next granulation.

[0039] Furthermore, a sealing ring 16 is provided on the screen 4 , a sealing groove 17 is provided on the granulating cylinder 2 , and the sealing ring 16 is plugged into the sealing groove 17 . Specifically, the sealing ring 16 is annular and is arranged on the upper surface of the screen 4. The sealing groove 17 is an annular groove and is arranged at the bottom end of the granulation cylinder 2. In order to facilitate the insertion of the sealing ring 16 and the sealing groove 17, the open end of the sealing groove 17 is open, and there are gaps between the bottom end of the granulation cylinder 2 and the upper surface of the screen 4 and the top end of the sealing ring 16 and the inner top wall of the sealing groove 17. The purpose of such a setting is that when the sleeve 3 drives the screen 4 to move upward, the sealing ring 16 will be inserted into the sealing groove 17 to seal the position where the screen 4 is connected to the granulation cylinder 2, thereby preventing the paint from entering the internal space of the sleeve 3, and when the screen 4 abuts against the cutter 5, there are gaps between the bottom end of the granulation cylinder 2 and the upper surface of the screen 4 and the top end of the sealing ring 16 and the inner top wall of the sealing groove 17, so as not to affect the transmission of the force of the first spring 6, that is, at this time, the elastic force of the first spring 6 can only be transmitted to the screen 4 and the cutter 5.

[0040] Furthermore, it also includes a conveying mechanism for conveying the paint, the conveying mechanism includes a driving motor 18 and a spiral conveying rod 19 connected to the output end of the driving motor 18, and the spiral conveying rod 19 is arranged in the granulation cylinder 2. Specifically, the driving motor 18 is fixed on the top of the collecting barrel (not shown in the figure) through a mounting plate, and the granulating cylinder 2 is fixedly connected to the lower surface of the mounting plate, and the driving motor 18 is fixedly connected to the upper surface of the mounting plate, and its output end passes through the mounting plate and extends into the granulating cylinder 2 and is fixedly connected to the top of the spiral conveying rod 19. The middle of the spiral conveying rod 19 is a rod-shaped structure, and a spiral conveying part is arranged on the outer peripheral surface of the rod-shaped structure. The purpose of such arrangement is that when the paint is loaded, the paint is passed from the feed hopper 1 into the inside of the bending cylinder and slides into the granulating cylinder 2. At this time, the driving motor 18 is started, and the driving motor 18 drives the spiral conveying rod 19 at its output end to rotate, so that the paint can be transported to the position of the screen 4 and provide an extrusion force for the paint so that the paint can pass through the screen 4 smoothly. At this time, the paint is in a long strip shape. In this process, the cutter 5 is controlled to rotate, and the paint passing through the screen hole can be cut off at this time to achieve the effect of granulation.

[0041] Preferably, the cutter 5 is fixedly connected to the spiral conveying rod 19. The cutter 5 is fixedly connected to the bottom end of the spiral conveying rod 19, so that when the driving motor 18 drives the spiral conveying rod 19 to rotate, the cutter 5 is driven to rotate synchronously and passively to achieve passive cutting of the paint.

[0042] Since the first spring 6 is used as a replacement for the pressure sensor in the present application, the first spring 6 is a precision part, and therefore the first spring 6 needs to be protected to prevent changes in its elastic characteristics due to being in a stressed state for a long time. As another embodiment of the present invention, the connecting tube 7 includes a first section 701 and a second section 702 that are slidably connected to each other, and a limiting structure is provided between the first section 701 and the second section 702 to prevent the two from rotating relative to each other. A socket 20 is provided on the first section 701 and the second section 702, and a plug-in portion 21 is provided on the locking block 9, and the plug-in portion 21 is plugged into the socket 20.Specifically, in the present embodiment, the first section 701 is located below the second section 702, a lifting groove 22 is provided on the first section 701, a connecting portion 23 adapted to the lifting groove 22 is provided on the second section 702, the connecting portion 23 is slidably connected to the lifting groove 22, the first spring 6 is connected to the first section 701, the plug-in portion 21 is L-shaped, which includes a vertical section and a horizontal section, a long strip-shaped avoidance groove 24 is provided on the inner bottom wall of the T-slot 12, the top end of the vertical section passes through the avoidance groove 24 and is fixedly connected to the locking block 9, and the horizontal section passes through the side wall of the lifting groove 22 and is plugged into the socket 20. The effect of such a setting is that during the upward movement of the sleeve 3, the plug-in portion 21 is inserted into the socket 20 The first section 701 and the second section 702 are limited in the vertical direction. When the screen 4 cannot move up further after abutting against the cutter 5, the first section 701 and the second section 702 are connected into a whole under the action of the plug-in portion 21. Therefore, when the sleeve 3 continues to move up, the flange on the first section 701 will squeeze the first spring 6 to store force for the first spring 6. When the compression of the first spring 6 reaches the maximum value, the pin 13 will be pulled out of the locking hole 14 on the locking block 9, so that the locking block 9 pops out of the T-slot 12. At the same time, the plug-in portion 21 will also be driven to move in the direction away from the socket 20. The inner card groove and the outer card groove will be connected to each other. The card groove is deeper than the general thread. When the outer card groove on the locking block 9 and the inner card groove on the sleeve 3 are about to be plugged in (that is, the inner card groove and the outer card groove have not been fully plugged in at this time, and in this state, the locking block 9 will move a short distance toward the inner wall of the sleeve 3), during the subsequent movement of the locking hole 14, the plug-in portion 21 will be completely pulled out of the socket 20 on the connecting portion 23, and the position of the screen 4 and the second section 702 are fixed during this process. At this time, the elastic force of the first spring 6 is released, which will drive the first section 701 to move upward, so that the connecting portion 23 is inserted into the lifting slot 22 to achieve avoidance. During the upward movement of the first section 701, the first spring 6 The elastic force of spring 6 is released, thereby preventing the first spring 6 from being continuously stressed during the granulation process to protect the first spring 6. After granulation is completed, the sleeve 3 is removed from the granulation cylinder 2 and the first section 701 is pressed downward. During this process, the first spring 6 will accumulate force again. When the socket 20 on the first section 701 coincides with the socket 20 on the second section 702, a force is provided to move the locking block 9 toward the direction of the central axis of the granulation cylinder 2, so that the locking block 9 slides toward the inside of the T-slot 12. During the sliding process, the plug-in portion 21 will penetrate the lifting slot 22 and be plugged into the socket 20 on the second section 702, so as to achieve the resetting of the first section 701 and the second section 702.

[0043] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A granulation device, comprising a feed hopper and a granulation cylinder connected to the feed hopper, characterized in that: The granulating cylinder is threadedly connected with a sleeve, a screen is arranged in the sleeve, a cutter is arranged in the granulating cylinder, and the cutter is located on the movement stroke of the screen; A pressure detection mechanism is provided on the screen, and a locking mechanism is provided between the screen and the sleeve; The position of the screen is locked by a locking mechanism based on the value of the pressure detection mechanism.

2. A granulation device according to claim 1, characterized in that: The pressure detection mechanism includes a first spring. A connecting tube is fixedly connected to the screen. The connecting tube is slidably connected to the sleeve. The first spring is arranged between the connecting tube and the sleeve.

3. A granulation device according to claim 2, characterized in that: The sleeve is provided with a sealing portion.

4. A granulation device according to claim 1, characterized in that: The locking mechanism comprises a locking block, the locking block is slidably connected to the screen, and a second spring is arranged between the locking block and the screen, the sleeve is provided with an inner snapping groove, and the locking block is provided with an outer snapping groove; When the inner snap-in groove of the sleeve is snap-fitted with the outer snap-in groove of the locking block, the position of the screen is locked.

5. A granulation device according to claim 4, characterized in that: It also includes a limiting component for fixing the position of the locking block.

6. A granulation device according to claim 5, characterized in that: The limiting assembly includes a pin rod, and the screen and the locking block are both provided with locking holes matched with the pin rod, and the pin rod is plugged into the locking hole.

7. A granulation device according to claim 6, characterized in that: A connecting rod is fixedly arranged between the pin rod and the sleeve.

8. A granulation device according to claim 1, characterized in that: The screen is provided with a sealing ring, the granulating cylinder is provided with a sealing groove, and the sealing ring is plugged into the sealing groove.

9. A granulation device according to claim 1, characterized in that: It also includes a conveying mechanism for conveying the paint, wherein the conveying mechanism includes a driving motor and a screw conveying rod connected to the output end of the driving motor, and the screw conveying rod is arranged in the granulating cylinder.

10. A granulation device according to claim 9, characterized in that: The cutter is fixedly connected to the spiral conveying rod.

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