Paper beating device capable of automatically adjusting speed

Abstract

The utility model discloses a paper beating device capable of automatically regulating speed. The paper beating device is characterized by further comprising a PLC (Programmable Logic Controller) and a weighing sensor, wherein the PLC is arranged on one side of a beating barrel and is electrically connected with a variable frequency motor I and a variable frequency motor II; the weighing sensor is arranged at the bottom of a rotating chassis, is used for sensing the weight of pulp in the beating barrel and is also electrically connected with the PLC; through the arrangement of the weighing sensor, the weight of pulp in the pulping barrel can be sensed, when the pulp is too much, the pulp is fed back to the PLC through the weighing sensor, the PLC controls the first variable frequency motor and the second variable frequency motor to rotate in an accelerated mode according to the weight value, fed back by the weighing sensor, of the pulp, and therefore the pulping speed is increased, and when the pulp is little, the second variable frequency motor and the third variable frequency motor rotate in an accelerated mode. And the PLC controls the variable frequency motor I and the variable frequency motor II to reduce the rotating speed, so that the energy consumption is reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pulping device technology, specifically to a paper pulping device with adjustable speed. Background Technology

[0002] Pulp beaters are mainly used in the papermaking industry. They have a large mixing capacity per cycle. Existing pulp beaters generally only have one set of mixing heads, and these heads are usually located at the bottom of the beating tank. The pulp concentration is inconsistent at the top and bottom of the tank, requiring a long mixing time to achieve uniform mixing. This is time-consuming and energy-intensive. Moreover, the mixing heads are prone to wear and breakage during prolonged mixing. When replacing them, the entire mixing shaft and the mixing head need to be replaced together, resulting in high maintenance costs. In addition, the beating speed is fixed regardless of the amount of pulp. This leads to a situation where the rotation speed is too low and the beating time is too long when there is a lot of pulp, and the rotation speed is relatively too high when there is a little pulp, wasting energy. Therefore, a self-adjustable speed paper beating device is proposed. Utility Model Content

[0003] The main purpose of this utility model is to provide a solution that can effectively address the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a self-adjustable speed paper pulping device, comprising a pulping tank, a feed hole, a water inlet, and a variable frequency motor 1 disposed at the top of the pulping tank, a discharge hole disposed at the bottom of the pulping tank, and a stirring shaft disposed inside the pulping tank and connected to the variable frequency motor 1, characterized in that: it further comprises several stirring paddles sleeved on the stirring shaft for easy disassembly, a variable frequency motor 2 disposed at the bottom of the pulping tank, a rotating base disposed inside the pulping tank and connected to the variable frequency motor 2, filter boxes symmetrically disposed under the rotating base for easy disassembly and cleaning, a PLC controller disposed on one side of the pulping tank and electrically connected to the variable frequency motor 1 and the variable frequency motor 2, and a weighing sensor disposed at the bottom of the rotating base for sensing the weight of the pulp in the pulping tank and also electrically connected to the PLC controller.

[0005] Preferably, the stirring paddle includes a sleeve connected to the stirring shaft and stirring blades disposed on the sleeve.

[0006] Preferably, the top of the sleeve is provided with several protrusions, and the bottom is provided with several grooves that are adapted to the protrusions on the next sleeve.

[0007] Preferably, the stirring shaft is provided with a locking nut for locking the stirring paddle.

[0008] Preferably, the rotating chassis is provided with several arc-shaped blocks and several discharge holes.

[0009] Preferably, the filter box includes surrounding panels, a filter screen at the bottom, and several sliders disposed at the bottom of the filter box.

[0010] Preferably, the pulping tank is provided with a base plate for fixing the filter box and a guide rail adapted to the slider.

[0011] Preferably, the variable frequency motor 2 is provided with a rotating shaft connected to the rotating chassis.

[0012] Preferably, a universal joint is provided at the connection between the stirring shaft and the rotating shaft.

[0013] This invention offers the following advantages: By incorporating easily detachable mixing paddles, they can be removed from the mixing shaft and replaced after prolonged wear or damage, reducing maintenance costs. Furthermore, the stacking of multiple paddles ensures thorough and uniform mixing of the pulp in the pulping tank, saving pulping time and improving efficiency. The rotating base facilitates the upward spiraling of bottom-sediment, ensuring consistent pulp concentration within the tank. The filter box allows for easy filtration of the mixed pulp, removing larger particles and ensuring uniformity of the finished product. A weighing sensor detects the weight of the pulp in the tank. When there is a large amount of pulp, the sensor feeds this information to the PLC controller, which then controls the variable frequency motors (VFM1 and VFM2) to accelerate, increasing pulping speed. Conversely, when there is a small amount of pulp, the VFM controller reduces the speed of the VFM motors, reducing energy consumption and lowering costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the stirring paddle mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the rotating chassis of this utility model;

[0017] Figure 4 This is a schematic diagram of the filter box structure of this utility model;

[0018] Figure 5 This is a partial enlarged view of the present invention.

[0019] Legend: 1. Pulping tank; 2. Feed hole; 3. Water inlet; 4. Variable frequency motor one; 5. PLC controller; 6. Discharge hole; 7. Agitator shaft; 8. Agitator paddle; 81. Sleeve; 811. Boss; 812. Groove; 82. Agitator blade; 9. Variable frequency motor two; 10. Rotating chassis; 101. Arc block; 102. Discharge hole; 11. Filter box; 111. Enclosure; 112. Filter screen; 113. Slider; 12. Locking nut; 13. Base plate; 14. Guide rail; 15. Rotating shaft; 16. Universal joint; 17. Weighing sensor. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-5 As shown, a self-adjusting speed paper pulping device includes a pulping tank 1, a feed port 2 and a water inlet 3 located at the top of the pulping tank 1, a variable frequency motor 4, a discharge port 6 located at the bottom of the pulping tank 1, and a stirring shaft 7 located inside the pulping tank 1 and connected to the variable frequency motor 4. The device is characterized by further including several easily detachable stirring paddles 8 sleeved on the stirring shaft 7, a variable frequency motor 9 located at the bottom of the pulping tank 1, a rotating base 10 located inside the pulping tank 1 and connected to the variable frequency motor 9, filter boxes 11 symmetrically arranged below the rotating base 10 for easy disassembly and cleaning, a PLC controller 5 located on one side of the pulping tank 1 and electrically connected to the variable frequency motor 4 and the variable frequency motor 9, and a weighing sensor 17 located at the bottom of the rotating base 10 for sensing the weight of the pulp in the pulping tank 1 and also electrically connected to the PLC controller 5. By providing easily detachable stirring paddles 8, when the stirring paddles 8 wear or break after prolonged use, they can be removed from the stirring shaft 7 and replaced. This reduces maintenance costs, and the multiple stacked mixing paddles (8) ensure thorough and uniform mixing of the pulp in the pulping tank 1, saving pulping time and improving pulping efficiency. The rotating base 10 facilitates the upward spiraling of bottom-sedimented pulp, ensuring consistent pulp concentration within the pulping tank 1. The filter box 11 allows for the filtration of the mixed pulp, removing larger particles and ensuring product uniformity. The weighing sensor 17 detects the weight of the pulp in the pulping tank 1. When there is a large amount of pulp, the weighing sensor 17 sends feedback to the PLC controller 5. Based on this weight, the PLC controller 5 controls the variable frequency motors 4 and 9 to accelerate, increasing pulping speed. When there is a small amount of pulp, the PLC controller 5 controls the variable frequency motors 4 and 9 to reduce their speed, thus reducing energy consumption and costs.

[0022] In one embodiment, the stirring paddle 8 includes a sleeve 81 connected to the stirring shaft 7 and stirring blades 82 disposed on the sleeve 81. The top of the sleeve 81 is provided with a plurality of protrusions 811, and the bottom is provided with a plurality of grooves 812 adapted to the protrusions 811 on the next sleeve 81. The stirring shaft 7 is provided with a locking nut 12 for locking the stirring paddle 8. When the stirring paddle 8 is worn or damaged, the variable frequency motor 4 is separated from the stirring shaft 7, the locking nut 12 on the stirring shaft 7 is removed, the stirring paddle 8 sleeved on the stirring shaft 7 is taken off the stirring shaft 7, a new stirring paddle 8 is replaced, and then the locking nut 12 is fixed on the stirring shaft 7. At the same time, when the amount of pulp in the pulping tank 1 is large, multiple stirring paddles 8 can be stacked by matching the protrusions 811 with the grooves 812 to make the pulp fully and evenly mixed.

[0023] In one embodiment, the rotating chassis 10 is provided with a plurality of arc-shaped blocks 101 and a plurality of discharge holes 102.

[0024] In one embodiment, the filter box 11 includes surrounding panels 111, a filter screen 112 at the bottom, and several sliders 113 disposed at the bottom of the filter box 11; the pulping tank 1 is provided with a base plate 13 for fixing the filter box 11 and a guide rail 14 adapted to the sliders 113; when there is a lot of pulp on the filter screen 112 in the filter box 11, the filter box 11 can be pulled out from the pulping tank 1 by the sliders 113 disposed at the bottom of the filter box 11 and the guide rails 14 on the pulping tank 1, and then the pulp on the filter screen 112 can be cleaned and reused.

[0025] In one embodiment, the variable frequency motor 9 is provided with a rotating shaft 15 connected to the rotating chassis 10; a universal joint 16 is provided at the connection between the stirring shaft 7 and the rotating shaft 15.

[0026] In use, the pulp is first fed into the feed hole 2, and then an appropriate amount of water is added through the water inlet 3. The pulp and water entering the pulping tank 1 are weighed by the weighing sensor 17, and the weighing information is transmitted to the PLC controller 5. The PLC controller 5 identifies the weight and selects the corresponding motor speed, then drives the variable frequency motor 4 and variable frequency motor 9. The variable frequency motor 4 drives the stirring shaft 7 to rotate, which in turn drives the stirring paddle 8 to rotate. The variable frequency motor 9 drives the rotating shaft 15 to rotate, thereby driving the rotating base 10 to rotate. The rotating base 10 and the stirring paddle 8 are connected by a universal joint 16, and their rotation directions are not the same. The rotating base 10 spirals the pulp deposited at the bottom upward, so that the pulp in the pulping tank 1 can be fully and evenly mixed. The evenly mixed pulp is discharged through the discharge hole 102 on the rotating base 10 to the filter box 11. After being filtered by the filter screen 112 on the filter box 11, the larger pulp is left on the filter screen 112, and the pulp that meets the requirements is discharged through the discharge hole 6.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-adjustable speed paper pulping device, comprising a pulping tank (1), a feed hole (2), a water inlet (3), and a variable frequency motor (4) disposed at the top of the pulping tank (1), a discharge hole (6) disposed at the bottom of the pulping tank (1), and a stirring shaft (7) disposed inside the pulping tank (1) and connected to the variable frequency motor (4), characterized in that: It also includes several agitators (8) that are sleeved on the agitator shaft (7) for easy disassembly, a variable frequency motor (9) set at the bottom of the pulping tank (1), a rotating base (10) set inside the pulping tank (1) and connected to the variable frequency motor (9), a filter box (11) symmetrically set under the rotating base (10) for easy disassembly and cleaning, a PLC controller (5) set on one side of the pulping tank (1) and electrically connected to the variable frequency motor (4) and the variable frequency motor (9), and a weighing sensor (17) set at the bottom of the rotating base (10) for sensing the weight of the pulp in the pulping tank (1) and also electrically connected to the PLC controller (5).

2. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The stirring paddle (8) includes a sleeve (81) connected to the stirring shaft (7) and stirring blades (82) disposed on the sleeve (81).

3. The self-adjustable speed paper pulping device according to claim 2, characterized in that: The top of the sleeve (81) is provided with several bosses (811), and the bottom is provided with several grooves (812) that are adapted to the bosses (811) on the next sleeve (81).

4. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The stirring shaft (7) is provided with a locking nut (12) for locking the stirring paddle (8).

5. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The rotating chassis (10) is provided with several arc-shaped blocks (101) and several discharge holes (102).

6. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The filter box (11) includes a surrounding panel (111), a filter screen (112) at the bottom, and several sliders (113) at the bottom of the filter box (11).

7. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The pulping tank (1) is provided with a base plate (13) for fixing the filter box (11) and a guide rail (14) adapted to the slider (113).

8. The self-adjustable speed paper pulping device according to claim 1, characterized in that: The variable frequency motor 2 (9) is provided with a rotating shaft (15) connected to the rotating chassis (10).

9. A self-adjustable speed paper pulping device according to claim 4 or 8, characterized in that: A universal joint (16) is provided at the connection between the stirring shaft (7) and the rotating shaft (15).

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