Pulper

Abstract

The utility model belongs to the technical field of papermaking equipment, and particularly relates to a pulper which comprises a rack, a barrel body, a pulping assembly, a driving motor and a control system. The barrel body is fixedly arranged on the rack, the top of the barrel body is open, the barrel body is used for containing slurry, and a slurry outlet is formed in the bottom of the barrel body; the pulping assembly is used for crushing the pulp in the barrel body; the driving motor is fixedly arranged on the rack, and the driving motor is used for providing circumferential rotation power for the pulping assembly; the control system comprises a controller, a liquid level sensor, a water inlet valve flow sensor, a slurry discharge valve flow sensor and a frequency converter, the controller is in telecommunication connection with the liquid level sensor, the water inlet valve flow sensor, the slurry discharge valve flow sensor and the frequency converter, and the frequency converter is used for controlling the output rotating speed of the driving motor. The control system can adjust the rotating speed of the driving motor according to different working conditions, the total energy consumption is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking equipment, in particular to a pulping machine. Background Art

[0002] Pulpers are mainly used in wet nonwoven and papermaking industries. They can break pulp boards, broken paper in the production process, waste paper and other raw materials into fibrous pulp. The materials enter the pulper through the feed port, and the rotating blade assembly cuts, tears and crushes the materials into smaller particles.

[0003] The current pulper has only one pulping speed after startup and cannot adjust the speed according to the actual working conditions. For example, when the liquid level is low, the blade assembly does not need to rotate at high speed for crushing, and only low-speed mixing is required when adding water and pumping pulp. If the high-speed crushing condition is maintained all the time, high energy consumption, waste and high cost will occur. Utility Model Content

[0004] The purpose of the utility model is to provide a pulper to solve the above-mentioned technical problems, so as to achieve the effect of reducing overall energy consumption and reducing production costs.

[0005] In view of this, the utility model provides a pulper, comprising a frame and further comprising:

[0006] A barrel body, which is fixedly mounted on the frame, has an open top, is used to contain slurry, and has a slurry outlet at the bottom;

[0007] A pulping assembly, which is used to crush the pulp in the barrel;

[0008] A driving motor, wherein the driving motor is fixedly mounted on the frame and is used to provide circumferential rotational power for the pulping assembly;

[0009] A control system, the control system includes a controller, a liquid level sensor, a water inlet valve flow sensor, a slurry discharge valve flow sensor and a frequency converter, the controller is fixedly arranged in the operation panel of the pulper, the liquid level sensor is fixedly arranged in the barrel body, the water inlet valve flow sensor is fixedly arranged at the water inlet valve of the water inlet pipe, the slurry discharge valve flow sensor is fixedly arranged at the slurry discharge valve of the slurry discharge pipe, the controller is electrically connected with the liquid level sensor, the water inlet valve flow sensor, the slurry discharge valve flow sensor and the frequency converter, and the frequency converter is used to control the output speed of the drive motor.

[0010] In the present technical scheme, when the liquid level sensor transmits the liquid level signal in the barrel to the controller, the controller controls the frequency converter to transmit a signal to change the output speed of the drive motor after processing, and the adjustment range is between 50%-80% of the rated speed; when the water inlet valve flow sensor senses that the water inlet valve is open, the signal is transmitted to the controller, and the controller controls the frequency converter to transmit a signal after processing to adjust the output speed of the drive motor to 5% of the rated speed; when the slurry discharge valve flow sensor senses that the slurry discharge valve of the slurry discharge pipe is open, the signal is transmitted to the controller, and the controller controls the frequency converter to transmit a signal after processing to adjust the output speed of the drive motor to 20% of the rated speed; the above control system can adjust the speed of the drive motor according to different working conditions, reduce overall energy consumption, and reduce production costs.

[0011] Furthermore, the liquid level sensor is a pressure type liquid level sensor.

[0012] Furthermore, the pulping assembly includes a pulping roller and a main blade fixedly arranged on the periphery of the pulping roller, and the pulping roller is connected to the output end of the driving motor and can rotate circumferentially.

[0013] Furthermore, the pulping assembly also includes a radial crushing assembly, which is used to tear the pulp in the barrel along the diameter direction of the barrel.

[0014] Furthermore, the radial crushing assembly comprises:

[0015] The crushing frame is fixedly arranged in the barrel body, and the crushing frame comprises a circular ring coaxial with the pulping roller and a vertical rod extending from the lower end of the circular ring to the bottom of the barrel body, and a through hole is opened on the circular ring along the diameter direction;

[0016] A cam, wherein the cam is fixedly sleeved on the pulping roller and can rotate synchronously with the pulping roller;

[0017] A moving rod, the moving rod is slidably arranged in the through hole, both ends of the moving rod extend out of the through hole, and one end of the moving rod is arranged on the rotation path of the cam;

[0018] A spring, which always has a tendency to push one end of the moving rod against the outer periphery of the cam;

[0019] A vertical rod, wherein the vertical rod is fixedly arranged at an end of the moving rod away from the cam, and the vertical rod is perpendicular to the moving rod;

[0020] The radial rod is fixedly arranged on the vertical rod in parallel with the moving rod, and a radial blade is fixedly arranged on the radial rod, and the blade edge of the radial blade is serrated.

[0021] In the present technical solution, after the driving motor is started, it drives the pulping roller to rotate circumferentially, thereby causing the cam to rotate. During the rotation of the cam, the convex portion rotates to the moving rod, which squeezes the moving rod to slide in the through hole along the radial direction of the ring away from the pulping roller. This will cause the radial rod to move with the radial blade. When the convex portion rotates away from the moving rod, the spring will cause the moving rod to move and reset in the through hole away from the pulping roller, thereby causing the radial blade to reciprocate along the extension line of the pulping roller diameter, and work together with the main blade to form two pulping methods: rotational shredding and radial shredding, which can improve the pulping efficiency.

[0022] Furthermore, one end of the moving rod facing the cam is hemispherical.

[0023] Furthermore, a baffle is provided on the moving rod, and the spring is provided between the baffle and the inner ring of the annulus.

[0024] Furthermore, the moving rods are arranged in four groups along the circumferential direction of the ring, and each group of moving rods corresponds to a vertical rod with seven radial rods, and each radial rod is provided with a radial blade.

[0025] Furthermore, the middle of the cam is hollowed out, and an auxiliary blade is provided at the hollowed out portion.

[0026] In this technical solution, the hollow portion provides space for slurry spreading, and the auxiliary blade can assist the main blade in slurry crushing.

[0027] Furthermore, the control method of the pulper comprises the following steps:

[0028] S1: Add water to feed, add clean water and pulp raw materials into the barrel;

[0029] S2: pulping, starting the drive motor, and performing pulping by forming two pulping modes of rotational cutting and radial tearing through the pulping component. During the pulping process, the control system adjusts the speed of the drive motor according to the signal transmitted by the liquid level sensor;

[0030] S3: After the pulp is pumped and crushed, the pulp discharge valve is opened to discharge the pulp. The control system adjusts the speed of the drive motor according to the signal transmitted by the flow sensor of the pulp discharge valve.

[0031] The beneficial effects of the utility model are:

[0032] 1. When the liquid level sensor transmits the liquid level signal in the barrel to the controller, the controller controls the frequency converter to send a signal to change the output speed of the drive motor after processing, and the adjustment range is between 50%-80% of the rated speed; when the water inlet valve flow sensor senses that the water inlet valve is open, the signal is transmitted to the controller, and the controller controls the frequency converter to send a signal after processing to adjust the output speed of the drive motor to 5% of the rated speed; when the slurry discharge valve flow sensor senses that the slurry discharge valve of the slurry discharge pipe is open, the signal is transmitted to the controller, and the controller controls the frequency converter to send a signal after processing to adjust the output speed of the drive motor to 20% of the rated speed; the above control system can adjust the speed of the drive motor according to different working conditions, reduce overall energy consumption, and reduce production costs.

[0033] 2. The pulping assembly forms radial blades that move back and forth along the extension line of the pulping roller diameter, and work together with the main blade to form two pulping modes: rotational shredding and radial shredding, which can improve the pulping efficiency.

[0034] 3. The hollow part provides space for the slurry to spread, and the auxiliary blade can assist the main blade in breaking the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the utility model;

[0036] Figure 2 It is a schematic diagram of the control system of the utility model;

[0037] Figure 3 It is a three-dimensional diagram of a pulper;

[0038] Figure 4 is a perspective view of a pulping assembly;

[0039] Figure 5 is a top view of the pulping assembly;

[0040] Figure 6 is a stereoscopic view of a pulping roller;

[0041] Figure 7 It is a partial perspective view of the radial crushing assembly.

[0042] The symbols in the figure are:

[0043] 1. Frame; 2. Barrel; 3. Pulping assembly; 4. Driving motor; 5. Pulping outlet; 6. Liquid level sensor; 7. Water inlet valve; 8. Pulping discharge valve; 9. Operation panel; 10. Water inlet pipe; 11. Pulping discharge pipe; 12. Pulping roller; 13. Main blade; 14. Ring; 15. Vertical rod; 16. Cam; 17. Moving rod; 18. Spring; 19. Vertical rod; 20. Radial rod; 21. Through hole; 22. Radial blade; 23. Baffle; 24. Hollow; 25. Auxiliary blade. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0047] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually 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. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0048] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0049] Embodiment 1

[0050] like Figure 1-3 As shown, a pulper includes a frame 1, a barrel 2, a pulping assembly 3, a drive motor 4 and a control system. The barrel 2 is fixedly mounted on the frame 1, the top of the barrel 2 is open, the barrel 2 is used to contain pulp, and a pulp outlet 5 is arranged at the bottom of the barrel 2; the pulping assembly 3 is used to crush the pulp in the barrel 2; the drive motor 4 is fixedly mounted on the frame 1, and the drive motor 4 is used to provide circumferential rotation power for the pulping assembly 3;

[0051] The control system includes a controller, a liquid level sensor 6, a flow sensor for a water inlet valve 7, a flow sensor for a pulp discharge valve 8, and a frequency converter. The controller is fixedly arranged in the operation panel 9 of the pulper, the liquid level sensor 6 is fixedly arranged in the barrel 2, and the liquid level sensor 6 is a pressure type liquid level sensor 6. The flow sensor for the water inlet valve 7 is fixedly arranged at the water inlet valve 7 of the water inlet pipe 10, and the flow sensor for the pulp discharge valve 8 is fixedly arranged at the pulp discharge valve 8 of the pulp discharge pipe 11. The controller is connected to the liquid level sensor 6, the flow sensor for the water inlet valve 7, the flow sensor for the pulp discharge valve 8, and the frequency converter by telecommunication, and the frequency converter is used to control the output speed of the drive motor 4.

[0052] When the liquid level sensor 6 transmits the liquid level signal in the barrel to the controller, the controller controls the frequency converter to transmit a signal to change the output speed of the drive motor 4 after processing, and the adjustment range is between 50%-80% of the rated speed; when the water inlet valve 7 flow sensor senses that the water inlet valve 7 is open, the signal is transmitted to the controller, and the controller controls the frequency converter to transmit a signal after processing to adjust the output speed of the drive motor 4 to 5% of the rated speed; when the slurry discharge valve 8 flow sensor senses that the slurry discharge valve 8 of the slurry discharge pipe 11 is open, the signal is transmitted to the controller, and the controller controls the frequency converter to transmit a signal after processing to adjust the output speed of the drive motor 4 to 20% of the rated speed; the above control system can adjust the speed of the drive motor 4 according to different working conditions, reduce overall energy consumption, and reduce production costs.

[0053] Embodiment 2

[0054] like Figure 4-7 As shown, the pulping assembly 3 includes a pulping roller 12 and a main blade 13 fixedly arranged on the periphery of the pulping roller 12. The pulping roller 12 is connected to the output end of the driving motor 4 and can rotate circumferentially.

[0055] The pulping assembly 3 further comprises a radial smashing assembly, which is used to tear and scrape the pulp in the barrel body 2 along the diameter direction of the barrel body 2. The radial smashing assembly comprises a smashing frame, a cam 16, a moving rod 17, a spring 18, a vertical rod 19 and a radial rod 20. The crushing frame is fixedly arranged in the barrel body 2, and the crushing frame includes a circular ring 14 coaxial with the pulping roller 12 and a vertical rod 15 extending from the lower end of the circular ring 14 to the bottom of the barrel body 2, and a through hole 21 is opened on the circular ring 14 along the diameter direction; the cam 16 is fixedly sleeved on the pulping roller 12 and can rotate synchronously with the pulping roller 12 in the circumferential direction; the moving rod 17 is slidably arranged in the through hole 21, and both ends of the moving rod 17 extend out of the through hole 21, and one end of the moving rod 17 is arranged on the rotation path of the cam 16; the spring 18 always has a movement tendency to push one end of the moving rod 17 to rest against the outer periphery of the cam 16; the vertical rod 19 is fixedly arranged at one end of the moving rod 17 away from the cam 16, and the vertical rod 19 is perpendicular to the moving rod 17; the radial rod 20 is fixedly arranged on the vertical rod 19 in parallel with the moving rod 17, and a radial blade 22 is fixedly arranged on the radial rod 20, and the blade of the radial blade 22 is serrated.

[0056] After the driving motor 4 is started, it drives the pulping roller 12 to rotate circumferentially, thereby rotating the cam 16. During the rotation of the cam 16, the convex portion rotates to the moving rod 17, which squeezes the moving rod 17 to slide in the through hole 21 along the radial direction of the ring 14 away from the pulping roller 12. This will cause the radial rod 20 to move with the radial blade 22. When the convex portion rotates away from the moving rod 17, the spring 18 will cause the moving rod 17 to move and reset in the through hole 21 away from the pulping roller 12, thereby forming a radial blade 22 that reciprocates along the direction of the extension line of the diameter of the pulping roller 12, and works together with the main blade 13 to form two pulping modes of rotational shredding and radial shredding, which can improve the pulping efficiency.

[0057] Embodiment 3

[0058] The end of the moving rod 17 facing the cam 16 is hemispherical. The moving rod 17 is provided with a baffle 23, and the spring 18 is provided between the baffle 23 and the inner ring of the ring 14. The moving rod 17 is provided with four groups along the circumferential direction of the ring 14, and a total of seven radial rods 20 are provided on the vertical rods 19 corresponding to each group of moving rods 17, and each radial rod 20 is provided with a radial blade 22. The cam 16 has a hollow 24 in the middle, and an auxiliary blade 25 is provided at the hollow 24. The hollow 24 provides space for slurry spreading, and the auxiliary blade 25 can assist the main blade 13 in pulping.

[0059] The control method of the pulper comprises the following steps:

[0060] S1: Add water to feed, add clean water and pulp raw materials into barrel 2;

[0061] S2: pulping, starting the drive motor 4, and performing pulping by forming two pulping modes of rotational shredding and radial shredding through the pulping assembly 3. During the pulping process, the control system adjusts the speed of the drive motor 4 according to the signal transmitted by the liquid level sensor 6;

[0062] S3: After the pulp is pumped and crushed, the pulp discharge valve 8 is opened to discharge the pulp, and the control system adjusts the speed of the driving motor 4 according to the signal transmitted by the flow sensor of the pulp discharge valve 8.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pulper, characterized in that , comprising a frame (1), and further comprising: A barrel body (2), wherein the barrel body (2) is fixedly arranged on the frame (1), the top of the barrel body (2) is open, the barrel body (2) is used to contain slurry, and the bottom of the barrel body (2) is provided with a slurry outlet (5); A pulping assembly (3), wherein the pulping assembly (3) is used to crush the pulp in the barrel (2); A driving motor (4), wherein the driving motor (4) is fixedly arranged on the frame (1), and the driving motor (4) is used to provide circumferential rotational power for the pulping assembly (3); A control system, the control system comprising a controller, a liquid level sensor (6), a water inlet valve (7) flow sensor, a pulp discharge valve (8) flow sensor and a frequency converter, the controller being fixedly arranged in an operation panel (9) of a pulper, the liquid level sensor (6) being fixedly arranged in a barrel (2), the water inlet valve (7) flow sensor being fixedly arranged at the water inlet valve (7) of a water inlet pipe (10), the pulp discharge valve (8) flow sensor being fixedly arranged at the pulp discharge valve (8) of a pulp discharge pipe (11), the controller being connected to the liquid level sensor (6), the water inlet valve (7) flow sensor, the pulp discharge valve (8) flow sensor and the frequency converter in telecommunication, and the frequency converter being used to control the output speed of a drive motor (4).

2. A pulper according to claim 1, characterized in that: The liquid level sensor (6) is a pressure type liquid level sensor (6).

3. A pulper according to claim 1, characterized in that: The pulping assembly (3) comprises a pulping roller (12) and a main blade (13) fixedly arranged on the periphery of the pulping roller (12); the pulping roller (12) is connected to the output end of the driving motor (4) and can rotate in a circumferential direction.

4. A pulper according to claim 3, characterized in that: The pulping assembly (3) further comprises a radial crushing assembly, which is used to tear and scrape the pulp inside the barrel (2) along the diameter direction of the barrel (2).

5. A pulper according to claim 4, characterized in that: The radial crushing assembly comprises: A crushing frame, the crushing frame is fixedly arranged in the barrel body (2), the crushing frame comprises a circular ring (14) coaxial with the pulping roller (12) and a vertical rod (15) extending from the lower end of the circular ring (14) to the bottom of the barrel body (2), and a through hole (21) is opened on the circular ring (14) along the diameter direction; A cam (16), wherein the cam (16) is fixedly sleeved on the pulping roller (12) and can rotate synchronously with the pulping roller (12); A moving rod (17), wherein the moving rod (17) is slidably arranged in the through hole (21), both ends of the moving rod (17) extend out of the through hole (21), and one end of the moving rod (17) is arranged on the rotation path of the cam (16); A spring (18), wherein the spring (18) always has a movement tendency to push one end of the moving rod (17) against the outer periphery of the cam (16); A vertical rod (19), wherein the vertical rod (19) is fixedly arranged at one end of the moving rod (17) away from the cam (16), and the vertical rod (19) is perpendicular to the moving rod (17); A radial rod (20) is fixedly arranged on the vertical rod (19) in parallel with the moving rod (17); a radial blade (22) is fixedly arranged on the radial rod (20); and the blade of the radial blade (22) is serrated.

6. A pulper according to claim 5, characterized in that: The end of the moving rod (17) facing the cam (16) is hemispherical.

7. A pulper according to claim 5, characterized in that: The moving rod (17) is provided with a baffle (23), and the spring (18) is arranged between the baffle (23) and the inner circle of the circular ring (14).

8. A pulper according to claim 5, characterized in that: The moving rods (17) are arranged in four groups along the circumferential direction of the circular ring (14), and a total of seven radial rods (20) are arranged on the vertical rods (19) corresponding to each group of moving rods (17), and each radial rod (20) is provided with a radial blade (22).

9. A pulper according to claim 5, characterized in that: The cam (16) has a hollow (24) in the middle, and an auxiliary blade (25) is arranged at the hollow (24).

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