Wood pulp secondary forming equipment

Abstract

The utility model relates to the field of disposable hygienic product mechanical equipment, in particular to wood pulp secondary forming equipment, which solves the problem that the existing wood pulp forming equipment is insufficient in wood pulp granularity stability and comprises a rack, and a first crushing mechanism and a second crushing mechanism are sequentially arranged on the rack. A conveying device used for feeding wood pulp is arranged at the input end of the first crushing mechanism, a feeding mechanism used for feeding the wood pulp subjected to primary crushing at the discharging end of the first crushing mechanism into the second crushing mechanism is arranged at the output end of the first crushing mechanism, and the feeding mechanism comprises a feeding pipe and a conveying fan arranged on the feeding pipe; and a forming die wheel for forming the cotton core is arranged at the discharging end of the second crushing mechanism.

Description

Technical Field

[0001] The utility model relates to the field of disposable hygiene product mechanical equipment, and particularly relates to a wood pulp secondary forming device. Background Art

[0002] In the production process of disposable hygiene products, wood pulp plays a role in absorbing liquids in the products and is crucial for the performance of the products. In traditional equipment, the forming of wood pulp generally involves the wood pulp paper being transported into a pulverizer. The pulverizer breaks the wood pulp paper into fibers of a certain size through sawteeth, and then the formed core body of the required size of the product is fixed through a forming bin and a mold wheel. During this process, the degree of pulverization of the wood pulp paper and the forming effect on the mold wheel will directly affect the water absorption of the product, thereby affecting the performance of the final product. In the traditional process, from the feeding of wood pulp to the final forming, it is concentrated on a set of continuous equipment, and the intermediate process can only achieve the perfection of wood pulp through the adjustment of the pulverizer. When the pulverizing ability of the pulverizer is insufficient, it cannot meet the equipment requirements.

[0003] In order to improve the pulverizing effect of wood pulp, as described in the Chinese patent with the publication number CN 218045590 U, a production device for the absorbent layer of a diaper includes a pulverizing mechanism, a screening mechanism, and a discharging mechanism arranged in sequence along the transportation direction of the wood pulp material, and also includes a material returning mechanism and a feeding mixer; the pulverizing mechanism is used for pulverizing the wood pulp material; the screening mechanism is used for screening the pulverized wood pulp material; the discharging mechanism is provided with a discharging port for receiving the qualified wood pulp material after screening and a recovery port for receiving the unqualified wood pulp material, the discharging port is communicated with the feeding mixer, and a feeding port for adding another material is provided on the feeding mixer, and the recovery port is communicated with the material returning mechanism; the feeding mixer is used for transporting the wood pulp material and mixing the wood pulp material with another material during the transportation process; the material returning mechanism is used for sending the unqualified wood pulp material back to the pulverizing mechanism for secondary pulverization.

[0004] This technical solution adopts the method of adding a screening mechanism to screen the pulverized wood pulp. After screening, the unqualified wood pulp material is returned to the pulverizing mechanism for secondary pulverization. In this technical solution, the situation of returning the material for secondary pulverization increases the working intensity for the pulverizing mechanism. Moreover, after returning the material, there are differences in the particle size of the wood pulp itself compared with the initially pulverized wood pulp. When mixed and pulverized again, it is often impossible to obtain a uniformly sized wood pulp material, and the stability of the material particles cannot be guaranteed. Summary of the Utility Model

[0005] Therefore, the utility model provides a wood pulp secondary forming device, which solves the problem of insufficient stability of wood pulp particle size in the existing wood pulp forming device.

[0006] To achieve the above object, the utility model is realized by the following technical solutions:

[0007] A wood pulp secondary forming device, including a frame, on which a first crushing mechanism and a second crushing mechanism are sequentially arranged. A conveying device for feeding wood pulp is provided at the input end of the first crushing mechanism. A feeding mechanism for feeding the wood pulp after being crushed for the first time at the output end of the first crushing mechanism into the second crushing mechanism is provided. The feeding mechanism includes a feeding pipe and a conveying fan arranged on the feeding pipe. A forming die wheel for cotton core forming is arranged at the output end of the second crushing mechanism.

[0008] Preferably, the second crushing mechanism includes a crushing chamber and a crushing roller arranged in the crushing chamber. A plurality of convex teeth are arranged at equal angles on the outer side of the crushing roller. Each of the convex teeth is arranged at an equal angle and is offset axially with respect to the crushing roller. A crushing knife is detachably installed on each of the convex teeth.

[0009] Preferably, the crushing knife includes a base for installing on the convex tooth and a blade part arranged at the top of the base. The blade part is divided into a first blade in the shape of a flat tooth and a second blade in the shape of an inclined tooth. The first blade and the second blade are arranged in an alternating manner during installation.

[0010] Preferably, three convex teeth form a horizontal row from one side to the other side horizontally. The misalignment angle of each convex tooth in the horizontal row is 3-6 degrees.

[0011] Preferably, each of the horizontal rows is arranged in a clockwise direction and is offset from one side to the other side. The misalignment angle of each horizontal row is 1-3 degrees.

[0012] Preferably, the first crushing mechanism and the second crushing mechanism have the same structure.

[0013] By adopting the foregoing technical solutions, the beneficial effects of the utility model are as follows:

[0014] This technical solution is improved on the basis of the original crushing equipment. The original crushing equipment is moved outside the production line as the first crushing mechanism for the first-stage crushing. Then, the wood pulp after the first-stage crushing is fed into the second crushing mechanism inside the production line through the feeding mechanism for the second-stage crushing. After the first-stage crushing outside the line and the second-stage crushing inside the line, the cotton core forming production of the production line is carried out. Thus, on the premise of maintaining the traditional primary crushing, the adjustment of the crushing degree of the wood pulp is realized, so that the wood pulp can achieve a more stable and perfect crushing effect, thereby improving the absorption efficiency of the wood pulp core and enhancing the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a layout structure schematic diagram of the equipment in the first embodiment of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the axial direction of the crushing roller in the second embodiment of the present utility model;

[0017] Figure 3 It is Figure 3 a partial enlarged structural diagram at position A in

[0018] Figure 4 This is a schematic surface structure diagram of the crushing roller in the second embodiment of the present utility model.

[0019] Reference numerals: 100, frame; 1, first crushing mechanism; 2, second crushing mechanism; 21, crushing bin; 22, crushing roller; 221, convex teeth; 23, crushing knife; 231, base; 232, blade part; 232a, first blade; 232b, second blade; 23a, horizontal row; 3, feeding pipe; 31, conveying fan; 4, forming die wheel. Specific embodiments

[0020] The following will describe in detail the embodiments of the present utility model in combination with specific embodiments, so as to fully understand how the present utility model uses technical means to solve technical problems and the implementation process of achieving technical effects and implement accordingly.

[0021] Embodiment 1

[0022] Referring to Figure 1 , a wood pulp secondary forming device includes a frame 100, a first crushing mechanism 1 and a second crushing mechanism 2 are sequentially arranged on the frame 100. A conveying device for feeding wood pulp is provided at the input end of the first crushing mechanism 1. The conveying device includes a guide roller group for conveying two paths of wood pulp raw materials. A feeding mechanism for feeding the wood pulp after being crushed once at the output end of the first crushing mechanism 1 into the second crushing mechanism 2 is provided at the output end of the first crushing mechanism 1. The feeding mechanism includes a feeding pipe 3 and a conveying fan 31 arranged on the feeding pipe 3. A forming die wheel 4 for cotton core forming is arranged at the output end of the second crushing mechanism 2.

[0023] Structurally, the first crushing mechanism 1 and the second crushing mechanism 2 have the same structure, and more stable wood pulp is obtained through two-stage crushing; and the same structure here means that the overall structural distribution is the same; while the fineness of crushing inside can be adjusted. It is only necessary that the particle fineness of the second crushing mechanism 2 is less than that of the first crushing mechanism 1, so as to form a gradually forming process from thick to fine.

[0024] This technical solution is improved on the basis of the original crushing equipment. The original crushing equipment is moved outside the production line as the first crushing mechanism 1 for the first-stage crushing. Then, the wood pulp after the first-stage crushing is sent into the second crushing mechanism 2 inside the production line through the feeding mechanism for the second-stage crushing. After the off-line primary crushing and in-line secondary crushing, the production of the cotton core in the production line is carried out. Furthermore, on the premise of maintaining the traditional primary crushing, the adjustment of the crushing degree of the wood pulp is realized, so that the wood pulp can achieve a more stable and perfect crushing effect, thereby improving the absorption efficiency of the wood pulp core and enhancing the product quality.

[0025] Embodiment 2

[0026] Reference Figures 2 to 4 , compared with Embodiment 1, the second crushing mechanism 2 adopts a more delicate internal crushing structure, which includes a crushing chamber 21 and a crushing roller 22 installed in the crushing chamber 21. A plurality of convex teeth 221 are arranged at equal angles on the outer side of the crushing roller 22. Each of the convex teeth 221 is arranged in a staggered manner at equal angles along the axial direction of the crushing roller 22. A crushing knife 23 is detachably installed on each of the convex teeth 221. Here, the convex teeth 221 are the basis for installing the crushing knife 23 for crushing. Through this structure, crushing knives 23 of different shapes and materials can be adjusted and installed to obtain different crushing effects, and each crushing knife 23 can be maintained and adjusted individually to obtain a more flexible production effect;

[0027] Specifically, the crushing knife 23 includes a base 231 for mounting on the convex teeth 221 and a blade 232 arranged on the top of the base 231, the blade 232 is divided into a first flat-toothed blade 232a and a second oblique-toothed blade 232b, the first blade 232a and the second blade 232b are arranged staggered with each other during installation; wherein, the convex teeth 221 form a group of horizontal rows 23a with three convex teeth 221 from one side to the other, and the staggered angle S1 of each convex tooth 221 in the horizontal row 23a is 3-6 degrees; each of the horizontal rows 23a is staggered in the clockwise direction from one side to the other, and the staggered angle S2 of each horizontal row 23a is 1-3 degrees; the convex teeth 221 in each horizontal row 23a are staggered at an angle, and when the wood pulp raw material in the input crushing assembly is crushed, the staggered crushing rollers 22 are staggered and contact the first blade plate. The convex teeth 221 are arranged close to each other, and after one convex row 23a pulverizes the wood pulp, the pulverizing force of the other convex row 23a on the external wood pulp is reduced, so that the service life of the pulverizing roller 22 is extended, and the wear of the blade is reduced, thereby solving the problem of excessive wear of the pulverizing wheel in the existing pulverizing device and high cost of use; the convex teeth 221 form a continuous staggered distribution, and the wood pulp is continuously pulverized with good fineness. The setting of the first blade 232a, wherein the first blade 232a and the second blade 232b are detachably connected to the convex teeth 221, is conducive to later replacement and reduces the cost of use; when the first blade 232a decreases from bottom to top, the contact surface with the first blade plate is reduced, and the impact force on the wood pulp pulverization is large, so that the pulverized wood pulp defibrination performance is improved.

[0028] For a more detailed description, please refer to the applicant's prior patent CN112796137B. Here, only one case is taken as an example.

[0029] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A wood pulp secondary molding device, characterized in that: The invention comprises a frame (100), wherein a first pulverizing mechanism (1) and a second pulverizing mechanism (2) are arranged on the frame (100) in sequence, wherein the input end of the first pulverizing mechanism (1) is provided with a conveying device for feeding wood pulp, and the output end of the first pulverizing mechanism (1) is provided with a feeding mechanism for feeding the wood pulp after one pulverization at its discharge end into the second pulverizing mechanism (2), wherein the feeding mechanism comprises a feeding pipe (3) and a conveying fan (31) arranged on the feeding pipe (3), and the discharge end of the second pulverizing mechanism (2) is provided with a molding die wheel (4) for molding a cotton core.

2. The wood pulp secondary molding equipment according to claim 1, characterized in that: The second pulverizing mechanism (2) comprises a pulverizing bin (21), and a pulverizing roller (22) mounted in the pulverizing bin (21); a plurality of convex teeth (221) are arranged at equal angles on the outer side of the pulverizing roller (22); the convex teeth (221) are arranged staggered at equal angles in the axial direction of the pulverizing roller (22); and a pulverizing knife (23) is detachably mounted on each of the convex teeth (221).

3. The wood pulp secondary molding equipment according to claim 2, characterized in that: The crushing knife (23) comprises a base (231) for mounting on the convex teeth (221) and a blade (232) arranged on the top of the base (231); the blade (232) is divided into a first blade (232a) in the form of a flat tooth and a second blade (232b) in the form of an oblique tooth; the first blade (232a) and the second blade (232b) are arranged in an alternating manner when mounted.

4. The wood pulp secondary molding device according to claim 2, characterized in that: The convex teeth (221) are arranged in a horizontal row (23a) of three from one side to the other, and the staggered angle of each convex tooth (221) in the horizontal row (23a) is 3-6 degrees.

5. The wood pulp secondary molding device according to claim 4, characterized in that: Each of the horizontal rows (23a) is staggered in a clockwise direction from one side to the other side, and the staggered angle of each of the horizontal rows (23a) is 1-3 degrees.

6. A wood pulp secondary molding device according to any one of claims 1 to 5, characterized in that: The first pulverizing mechanism (1) and the second pulverizing mechanism (2) have the same structure.

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