Multi-stage crushing device for urea resin

Abstract

The utility model relates to the technical field of multi-stage crushing, in particular to a multi-stage crushing device for urea resin, which comprises a crushing box internally provided with a crushing mechanism; wherein the crushing mechanism comprises two round rollers rotationally connected to the upper end of the inner wall of the crushing box, and one end of each round roller penetrates out of the crushing box and is fixedly connected with a first bevel gear; when urea resin is crushed, two round rollers rotate to drive first crushing cutters to alternately crush raw materials, meanwhile, a round plate drives a plurality of trigger blocks to circularly rotate, and when the trigger blocks rotate to coincide with a fixed plate, under the action of the fixed plate, the trigger blocks are pushed to extrude gas in a corresponding gas storage cylinder to enter a connecting pipe; and the corresponding longitudinal second crushing cutters are driven to move from the interiors of the first crushing cutters to crush the raw materials, the raw materials can be crushed from different directions, the raw materials can be cut into multiple blocks at the same time, and the cutting effect on the raw materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage crushing, in particular to a multi-stage crushing device for urea resin. Background Art

[0002] Urea resin is a thermosetting resin that becomes a hard and wear-resistant plastic after being heated and cured. Therefore, it is widely used in industry as adhesives, coatings, adhesives for plywood and wood processing. It needs to be crushed during the production process of urea resin.

[0003] The Chinese patent "A multi-stage crushing device for urea resin" authorization announcement number "CN216538864U" drives the stirring rod to rotate through the rotating first motor set in the crushing component. The rotation of the stirring rod drives the connecting rod to rotate the crushing knife to contact the material for crushing. The crushing ball is driven by the fixed rod to contact the semicircular bucket for grinding and crushing, which is convenient for complete stirring and crushing and improves production quality.

[0004] Although the above scheme can crush the urea resin, it uses the crushing blade to rotate and crush the urea resin along a predetermined direction, which will cause the crushing blade to have insufficient cutting force on part of the raw materials, thereby affecting the cutting and crushing effect on the raw materials.

[0005] Therefore, a multi-stage crushing device for urea resin is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-stage crushing device for urea resin in order to solve the above-mentioned problem, thereby improving the problem that the crushing blade is used to rotate and crush the urea resin along a predetermined direction, which will cause the crushing blade to have insufficient cutting force on part of the raw materials, thereby affecting the cutting and crushing effect of the raw materials.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme. A multi-stage crushing device for urea resin comprises: a crushing box, wherein a crushing mechanism is arranged inside the crushing box; wherein the crushing mechanism comprises two round rollers rotatably connected to the upper end of the inner wall of the crushing box, one end of each of the two round rollers passes through the crushing box and is fixedly connected to a first conical gear, the two first conical gears are meshed and connected, one side of the crushing box is fixedly connected to a first motor, the other end of one of the first conical gears is fixedly connected to the output shaft of the first motor, the surface of the round roller is fixedly connected to first crushing knives distributed in an annular array, the inner wall of the first crushing knife is slidably connected to two second crushing knives, the other side of the crushing box is fixedly connected to a fixed plate, and the inner wall of the round roller is provided with a driving assembly.

[0008] Preferably, the driving assembly comprises a cylinder, the inner wall of which is slidably connected to two piston plates, one end of which is fixedly connected to a connecting rod, the other end of which passes through the cylinder and is fixedly connected to the bottom end of the second crushing knife. The gas enters the cylinder to push the two piston plates to move simultaneously, which is conducive to the two connecting rods driving the corresponding second crushing knives to move out of the first crushing knife at the same time, thereby ensuring the consistency of the operation of the two second crushing knives.

[0009] Preferably, the driving assembly further comprises a connecting tube annularly distributed on the inner wall of the roller, the cylinder is connected to the connecting tube, the other end of the roller passes through the crushing box and is fixedly connected to a circular plate, the inner wall of the circular plate is fixedly connected to an annularly distributed gas cylinder, one end of the connecting tube passes through the roller and the circular plate in sequence and is connected to the bottom end of the corresponding gas cylinder, and the inner wall of the gas cylinder is slidably connected to a piston rod. While the two rollers rotate to drive the first crushing knife to alternately crush the raw material, the circular plate drives multiple trigger blocks to rotate in a circular manner. When the rotation of each trigger block coincides with the fixed plate, under the action of the fixed plate, the trigger block is pushed to squeeze the gas in the corresponding gas cylinder into the connecting tube, which is conducive to driving the corresponding longitudinal second crushing knife to move from the inside of the first crushing knife to crush the raw material, which is conducive to crushing the raw material from different directions, and can cut the raw material into multiple pieces at the same time, ensuring the cutting effect of the raw material.

[0010] Preferably, the top end of the piston rod passes through the air storage cylinder and is fixedly connected with a trigger block, and the trigger block is a half sphere, which is conducive to enabling the fixed plate to better push the trigger block to move.

[0011] Preferably, a spring is fixedly connected between the bottom end of the piston rod and the inner bottom wall of the gas storage cylinder. When the trigger block releases the squeeze, the spring facilitates the gas to flow back into the corresponding gas storage cylinder again, so that the corresponding second crushing knife is reset, which is convenient for the second crushing knife to perform crushing operation again.

[0012] Preferably, two limit blocks are fixedly connected to the inner wall of the cylinder to avoid excessive movement of the piston plate when it is reset, thereby ensuring the normal operation of the device.

[0013] Preferably, two crushing rollers are rotatably connected to the lower end of the inner wall of the crushing box, one end of the two crushing rollers passes through the crushing box and is fixedly connected to a second bevel gear, the two second bevel gears are meshed and connected, and a second motor is fixedly connected to one side of the crushing box, and the other end of one of the second bevel gears is fixedly connected to the output shaft of the second motor. This is conducive to secondary crushing of the raw materials crushed by the first crushing knife and the second crushing knife, ensuring the crushing effect of the raw materials.

[0014] Preferably, the number of the gas storage cylinders is the same as the number of the connecting pipes, so as to ensure the stability of the device during operation.

[0015] The beneficial effects of the utility model are:

[0016] 1. When crushing urea resin, two round rollers are used to rotate and drive the first crushing knife to crush the raw materials alternately. At the same time, the circular plate drives multiple trigger blocks to rotate in a circular shape. When the trigger block rotates and overlaps with the fixed plate, the fixed plate pushes the trigger block to squeeze the gas in the corresponding gas storage cylinder into the connecting pipe, which is conducive to driving the corresponding longitudinal second crushing knife to move from the inside of the first crushing knife to crush the raw materials. It is conducive to crushing the raw materials from different directions and can cut the raw materials into multiple pieces at the same time, ensuring the cutting effect of the raw materials;

[0017] 2. The gas enters the cylinder to push the two piston plates to move simultaneously, which is conducive to the two connecting rods driving the corresponding second crushing knives to move out of the first crushing knives at the same time, ensuring the consistency of the operation of the two second crushing knives. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the crushing mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the round roller structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0022] Figure 5 It is a cross-sectional view of a cylinder of the present utility model.

[0023] In the figure: 1, crushing box; 2, crushing mechanism; 201, round roller; 202, first bevel gear; 203, first motor; 204, first crushing knife; 205, second crushing knife; 206, driving assembly; 2061, cylinder; 2062, piston plate; 2063, connecting rod; 2064, connecting pipe; 2065, round plate; 2066, air storage cylinder; 2067, piston rod; 2068, trigger block; 2069, limit block; 20610, spring; 207, crushing roller; 2071, second bevel gear; 2072, second motor; 208, fixing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a multi-stage crushing device for urea resin comprises: a crushing box 1, wherein a crushing mechanism 2 is arranged inside the crushing box 1; wherein the crushing mechanism 2 comprises two round rollers 201 rotatably connected to the upper end of the inner wall of the crushing box 1, one end of each of the two round rollers 201 passes through the crushing box 1 and is fixedly connected to a first bevel gear 202, the two first bevel gears 202 are meshingly connected, a first motor 203 is fixedly connected to one side of the crushing box 1, the other end of one of the first bevel gears 202 is fixedly connected to the output shaft of the first motor 203, first crushing knives 204 distributed in an annular array are fixedly connected to the surface of the round roller 201, two second crushing knives 205 are slidably connected to the inner wall of the first crushing knife 204, a fixed plate 208 is fixedly connected to the other side of the crushing box 1, and a driving assembly 206 is arranged on the inner wall of the round roller 201.

[0026] A feed port is provided at the top of the crushing box 1. When the urea resin needs to be crushed, the raw material of the urea resin is poured into the interior of the crushing box 1 from the feed port, and the first motor 203 is started by the controller. When the first motor 203 is started, one of the first bevel gears 202 will be driven to rotate. Since the surfaces of the two first bevel gears 202 are meshed, when one of the first bevel gears 202 rotates, the other first bevel gear 202 will be driven to rotate in the opposite direction, thereby driving the two round rollers 201 to rotate in the opposite direction. At this time, the first crushing knives 204 on the surfaces of the two round rollers 201 will be staggered to crush the raw materials. When the two round rollers 201 rotate, the driving component 206 in the crushing mechanism 2 will be driven to operate, so that during the process of the first crushing knife 204 crushing the raw materials, the two second crushing knives 205 move outward to crush the raw materials.

[0027] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the driving assembly 206 includes a cylinder 2061, and the inner wall of the cylinder 2061 is slidably connected with two piston plates 2062, one end of the piston plate 2062 is fixedly connected with a connecting rod 2063, and the other end of the connecting rod 2063 passes through the cylinder 2061 and is fixedly connected to the bottom end of the second crushing knife 205. The driving assembly 206 also includes a connecting pipe 2064 distributed in an annular manner on the inner wall of the round roller 201, the cylinder 2061 is connected to the connecting pipe 2064, the other end of the round roller 201 passes through the crushing box 1 and is fixedly connected with a circular plate 2065, the inner wall of the circular plate 2065 is fixedly connected with an annularly distributed gas cylinder 2066, one end of the connecting pipe 2064 passes through the round roller 201 and the circular plate 2065 in sequence and is connected to the bottom end of the corresponding gas cylinder 2066, and the inner wall of the gas cylinder 2066 is slidably connected with a piston rod 2067. The top end of the piston rod 2067 passes through the gas storage cylinder 2066 and is fixedly connected with a trigger block 2068, which is a half sphere. The number of gas storage cylinders 2066 is the same as the number of connecting pipes 2064.

[0028] The fixing plate 208 is disposed between the two circular plates 2065 , and the distances between the surfaces of the two circular plates 2065 and the fixing plate 208 are the same.

[0029] The first crushing knives 204 distributed in equal rows in the longitudinal direction form a group, and the second crushing knives 205 in each group of first crushing knives 204 correspond to a connecting pipe 2064 .

[0030] When the two round rollers 201 rotate to drive the first crushing knife 204 to rotate and crush the raw materials, the circular plate 2065 will be driven to rotate synchronously, and the circular plate 2065 will rotate in a circular shape, thereby driving the corresponding trigger block 2068 to rotate in a circular shape through multiple air storage cylinders 2066. The rotation path of the trigger block 2068 will overlap with the fixed plate 208. When the trigger block 2068 rotates and overlaps with the fixed plate 208, the fixed plate 208 will squeeze the overlapping trigger block 2068. At this time, the entire set of second crushing knives 205 in the same longitudinal direction as the squeezed trigger block 2068 will be driven to operate. When the trigger block 2068 is squeezed, the piston rod 2067 will be pushed to move into the air storage cylinder 2066 and squeeze the air storage cylinder 2066. The gas in the cylinder 2061 is squeezed and enters the connecting pipe 2064 connected to the squeezed gas storage cylinder 2066, and enters the cylinder 2061 connected to the connecting pipe 2064 at the same time. The middle part of the cylinder 2061 is connected to the connecting pipe 2064, and the two piston plates 2062 are arranged on both sides of the air inlet of the cylinder 2061. When the gas enters the cylinder 2061, it will push the two piston plates 2062 to move and move away from each other. When the piston plate 2062 moves, it will push the connecting rod 2063 to move, thereby driving the second crushing knife 205 to move, so that the first crushing knife 204 crushes the raw material while the second crushing knife 205 moves from the inside of the first crushing knife 204 to crush the raw material.

[0031] like Figure 4 As shown, a spring 20610 is fixedly connected between the bottom end of the piston rod 2067 and the inner bottom wall of the gas storage cylinder 2066. When the trigger block 2068 is squeezed to push the piston rod 2067, the spring 20610 is compressed. When the corresponding trigger block 2068 is released from squeezing, the piston rod 2067 is reset under the action of the spring 20610, so that the gas flows back into the gas storage cylinder 2066 again. At this time, the corresponding second crushing knife 205 is reset.

[0032] like Figure 5 As shown, two limit blocks 2069 are fixedly connected to the inner wall of the cylinder 2061. When the device is in the initial state, the other end of the piston plate 2062 is in contact with the limit block 2069. When the device is reset, the limit block 2069 limits the reset movement of the piston plate 2062.

[0033] like Figure 2 As shown, two crushing rollers 207 are rotatably connected to the lower end of the inner wall of the crushing box 1, one end of the two crushing rollers 207 passes through the crushing box 1 and is fixedly connected to a second bevel gear 2071, the two second bevel gears 2071 are meshed and connected, and a second motor 2072 is fixedly connected to one side of the crushing box 1, and the other end of one of the second bevel gears 2071 is fixedly connected to the output shaft of the second motor 2072.

[0034] While the two round rollers 201 drive the first crushing knife 204 and the second crushing knife 205 to crush the raw materials, the second motor 2072 is started by the controller. When the second motor 2072 is started, it drives one of the second bevel gears 2071 to rotate, and drives the other second bevel gear 2071 to rotate in the opposite direction, thereby driving the two crushing rollers 207 in opposite directions. After the first crushing knife 204 and the second crushing knife 205 crush the raw materials, the crushed raw materials will fall onto the crushing roller 207. At this time, the two crushing rollers 207 rotate in opposite directions to perform secondary crushing on the crushed raw materials.

[0035] When the utility model is in use, when crushing urea resin, the raw material of urea resin is poured into the interior of the crushing box 1 from the feed port, and the first motor 203 and the second motor 2072 are started simultaneously by the controller. When the first motor 203 is started, it will drive the two round rollers 201 to rotate so that the first crushing knives 204 on the surfaces of the two round rollers 201 are staggered to perform primary crushing on the raw materials, and the crushed raw materials will fall onto the two crushing rollers 207. The second motor 2072 drives the two crushing rollers 207 to perform secondary crushing on the raw materials. At the same time, when the two round rollers 201 rotate, the circular plate 2065 is driven to rotate synchronously. When the circular plate 2065 drives the trigger block 2068 to rotate and overlap with the fixed plate 208, the fixed plate 208 will squeeze the overlapping trigger block 2068. At this time, it will drive the trigger block 2068 to be squeezed. The trigger block 2068 is in the same longitudinal direction of the entire set of second crushing knives 205. When the trigger block 2068 is squeezed, it will push the piston rod 2067 to move into the gas cylinder 2066 and squeeze the gas in the gas cylinder 2066. The squeezed gas will enter the connecting pipe 2064 connected to the squeezed gas cylinder 2066, and simultaneously enter the cylinder 2061 connected to this connecting pipe 2064 through the connecting pipe 2064. When the gas enters the cylinder 2061, it will simultaneously push the two piston plates 2062 to move and move away from each other. When the piston plate 2062 moves, it will push the connecting rod 2063 to move, thereby driving the second crushing knife 205 to move, so that the first crushing knife 204 crushes the raw material while the second crushing knife 205 moves from the inside of the first crushing knife 204 to crush the raw material.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-stage crushing device for urea resin, characterized in that: include: A crushing box (1), wherein a crushing mechanism (2) is arranged inside the crushing box (1); The crushing mechanism (2) comprises two round rollers (201) rotatably connected to the upper end of the inner wall of the crushing box (1), one end of each of the two round rollers (201) passes through the crushing box (1) and is fixedly connected to a first bevel gear (202), the two first bevel gears (202) are meshingly connected, one side of the crushing box (1) is fixedly connected to a first motor (203), the other end of one of the first bevel gears (202) is fixedly connected to the output shaft of the first motor (203), the surface of the round roller (201) is fixedly connected to first crushing knives (204) distributed in a ring array, the inner wall of the first crushing knife (204) is slidably connected to two second crushing knives (205), the other side of the crushing box (1) is fixedly connected to a fixed plate (208), and the inner wall of the round roller (201) is provided with a driving assembly (206).

2. A multi-stage crushing device for urea resin according to claim 1, characterized in that: The driving assembly (206) comprises a cylinder (2061), the inner wall of which is slidably connected to two piston plates (2062), one end of which is fixedly connected to a connecting rod (2063), and the other end of which passes through the cylinder (2061) and is fixedly connected to the bottom end of the second crushing knife (205).

3. The multi-stage crushing device for urea resin according to claim 2, characterized in that: The driving assembly (206) further comprises a connecting pipe (2064) annularly distributed on the inner wall of the round roller (201); the round cylinder (2061) is connected to the connecting pipe (2064); the other end of the round roller (201) passes through the crushing box (1) and is fixedly connected to a round plate (2065); the inner wall of the round plate (2065) is fixedly connected to an air storage cylinder (2066) distributed in annular shape; one end of the connecting pipe (2064) passes through the round roller (201) and the round plate (2065) in sequence and is connected to the bottom end of the corresponding air storage cylinder (2066); the inner wall of the air storage cylinder (2066) is slidably connected to a piston rod (2067).

4. The multi-stage crushing device for urea resin according to claim 3, characterized in that: The top end of the piston rod (2067) passes through the air storage cylinder (2066) and is fixedly connected to a trigger block (2068), wherein the trigger block (2068) is a half sphere.

5. The multi-stage crushing device for urea resin according to claim 3, characterized in that: A spring (20610) is fixedly connected between the bottom end of the piston rod (2067) and the inner bottom wall of the air storage cylinder (2066).

6. The multi-stage crushing device for urea resin according to claim 2, characterized in that: Two limit blocks (2069) are fixedly connected to the inner wall of the cylinder (2061).

7. The multi-stage crushing device for urea resin according to claim 1, characterized in that: The lower end of the inner wall of the crushing box (1) is rotatably connected to two crushing rollers (207), one end of the two crushing rollers (207) passes through the crushing box (1) and is fixedly connected to a second bevel gear (2071), the two second bevel gears (2071) are meshingly connected, and one side of the crushing box (1) is fixedly connected to a second motor (2072), the other end of one of the second bevel gears (2071) is fixedly connected to an output shaft of the second motor (2072).

8. The multi-stage crushing device for urea resin according to claim 3, characterized in that: The number of the gas storage cylinders (2066) is the same as the number of the connecting pipes (2064).

Images