Drying and stirring machine for recycled raw materials of woven bags

Abstract

The utility model discloses a drying and stirring machine for recycled raw materials of woven bags, and relates to the related technical field of woven bag processing. The drying device comprises a drying cylinder, a feeding channel, a rotating shaft and a small air compressor, the feeding channel is fixed to the upper portion of the drying cylinder in a penetrating mode, and first electric heating pipes distributed at equal intervals are fixed in the feeding channel; a rotating shaft is rotationally connected between the two ends of the drying cylinder in a penetrating mode, stirring blades distributed in a staggered mode are fixed to the peripheral face, located in an inner cavity of the drying cylinder, of the rotating shaft, the stirring blades are in an arc shape, and the inner arc faces of the stirring blades are net faces. Electric heating tubes II distributed in an annular array are fixed in an inner cavity of the rotating shaft; a small air compressor is fixed to one outer end face of the drying cylinder. By arranging the drying cylinder, the rotating shaft, the stirring blades and the small air compressor, the problem that the drying efficiency is low due to the fact that woven bag raw materials cannot move during drying is solved; and before the woven bag raw materials are dried, feeding is not uniform enough, and a large amount of water is prone to being accumulated.

Description

Technical Field

[0001] The utility model belongs to the technical field related to woven bag processing, in particular to a drying and mixing machine for recycling raw materials of woven bags. Background Art

[0002] The raw material for producing woven bags is polypropylene, which is extruded and stretched into flat yarns, and then woven, braided, and color-printed into woven bags. Woven bags are generally white or off-white in color, non-toxic and odorless, and generally less harmful to the human body. Although they are made of various chemical plastics, they are environmentally friendly and have a strong recycling capacity. The raw material produced after the woven bags are recycled is also polypropylene. Polypropylene is normally stored by granulation, but after the woven bag raw materials are recycled, they must be melted and then granulated and cooled. During this process, a large number of polypropylene particles will be immersed in cooling water to cool. In order to meet the needs of rapid recycling and production, they must be quickly dried and packaged. However, the following disadvantages still exist in the actual drying process:

[0003] Conventional drying methods are nothing more than air drying and drying, but for a large number of granular polypropylene, the drying effect is not very ideal. A large number of granular polypropylene are piled up, and it is difficult for wind to blow into the gaps to take away moisture, and the heat of drying is also difficult to transfer to the inside of the large number of accumulated granular polypropylene. Therefore, it is necessary to keep the polypropylene raw materials moving to cooperate with drying, and this problem needs to be solved;

[0004] Secondly, the feeding before drying is also particularly important. If a large amount of polypropylene particles contaminated with cooling water enter the equipment at one time, it is easy to cause excessive local moisture, which will have a certain impact on the subsequent drying. Therefore, it is necessary to ensure that the polypropylene particles are fed evenly. Utility Model Content

[0005] The utility model aims to provide a drying and stirring machine for recycling raw materials for woven bags. By arranging a drying cylinder, a rotating shaft, stirring blades and a small air compressor, the utility model solves the problems that the raw materials for the woven bags cannot move during drying, resulting in low drying efficiency; and the raw materials for the woven bags are not fed evenly before drying, which easily causes a large amount of water to accumulate.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a drying and mixing machine for recycling raw materials of woven bags, comprising a drying cylinder, a feeding channel, a rotating shaft and a small air compressor. The drying cylinder is placed horizontally, and a feeding channel is fixed through the upper part of the drying cylinder. Electric heating tubes with equal spacing are fixed in the feeding channel.

[0008] A rotating shaft is rotatably connected between the two ends of the drying cylinder, and a staggered stirring blade is fixed on the outer circumference of the rotating shaft in the inner cavity of the drying cylinder. The stirring blade is arc-shaped, and the inner arc surface of the stirring blade is set as a mesh surface;

[0009] The inner cavity of the rotating shaft is fixed with two electric heating tubes distributed in a ring array;

[0010] A small air compressor is fixed on an outer end surface of the drying cylinder.

[0011] Furthermore, two fans are symmetrically fixed on the upper end of the feed chute, and the blowing directions of the two fans are toward the inside of the feed chute; the spacing between adjacent electric heating tubes is greater than the particle size of the woven bag raw material particles.

[0012] Furthermore, one end of the stirring blade close to the rotating shaft is shorter than one end of the stirring blade away from the rotating shaft, and two side surfaces of the stirring blade adjacent to the mesh surface are also arc surfaces.

[0013] Furthermore, the inner cavity of the rotating shaft is interconnected with the inner cavity of the stirring blade, and the rotation diameter of the stirring blade is smaller than the inner diameter of the drying cylinder.

[0014] Furthermore, both ends of the rotating shaft extend out of the drying cylinder, an air pipe is fixed to the air outlet end of the small air compressor, and an end of the air pipe away from the small air compressor is rotatably connected with an end of the rotating shaft close to it in a through-type manner.

[0015] Furthermore, a bracket is fixed to one end of the drying cylinder away from the small air compressor, and a motor is fixed to the bracket, and the output shaft of the motor is fixedly connected to the end of the rotating shaft close to the motor.

[0016] Furthermore, the bottom of the drying cylinder is fixed with equally spaced and square discharge pipes, and each discharge pipe is provided with a gate valve.

[0017] The utility model has the following beneficial effects:

[0018] The utility model solves the problem that the raw materials of woven bags cannot move during drying, resulting in low drying efficiency, by arranging a drying cylinder, a rotating shaft, a stirring blade, a small air compressor and two electric heating pipes. After the recycled raw materials of the woven bags enter the drying cylinder, the motor drives the rotating shaft to rotate, and the rotating shaft drives the stirring blade to rotate, so that the stirring blade scoops up and stirs the particles in the drying cylinder, and then drops and scoops up again after circular motion. In this process, the two electric heating pipes in the drying cylinder generate heat, which is blown by the small air compressor through the air pipe to blow the heat out from the mesh surface, thereby performing a rapid hot air drying treatment on the polypropylene particles scooped up on the mesh surface. The amount of material scooped up each time is not much, and will not cause excessive accumulation. The scooped raw material particles are turned over, and the hot air drying will also turn over, so that the particles are constantly moving, and a rapid drying treatment is achieved.

[0019] The utility model solves the problem that the feeding of woven bag raw materials before drying is not uniform and a large amount of water is easily accumulated by arranging a feeding chute and an electric heating tube. When feeding, polypropylene particles are injected from the feeding chute, and the particles can only pass through the gaps between the electric heating tubes, thereby ensuring uniform feeding operation. Secondly, the electric heating tube itself has a certain amount of heat, which can realize preliminary drying and preheating processing, reduce the entry of water, and effectively improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0021] Figure 1 A three-dimensional diagram of a dry mixer for recycling raw materials of woven bags;

[0022] Figure 2 for Figure 1 Another structural diagram from another perspective;

[0023] Figure 3 This is a structural diagram of the drying cylinder after sectioning;

[0024] Figure 4 It is the structural diagram of the rotating shaft and the stirring blade;

[0025] Figure 5 It is the structural diagram of the rotating shaft and the stirring blade after longitudinal section;

[0026] Figure 6 This is a longitudinal section of the feed chute.

[0027] Reference numerals:

[0028] 1. Drying cylinder; 101. Bracket; 102. Motor; 103. Discharge pipe; 1031. Gate valve; 2. Inlet chute; 201. Fan; 202. Electric heating tube 1; 3. Rotating shaft; 301. Stirring blade; 3011. Mesh surface; 302. Electric heating tube 2; 4. Small air compressor; 401. Air pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-6 As shown, the utility model is a drying and mixing machine for recycling raw materials of woven bags, comprising a drying cylinder 1, a feeding chute 2, a rotating shaft 3 and a small air compressor 4. The drying cylinder 1 is placed horizontally, and the feeding chute 2 is fixed through the upper part of the drying cylinder 1. The feeding chute 2 is fixed with electric heating pipes 202 distributed at equal intervals;

[0031] The feeding channel 2 is used to add the raw material particles of the woven bag that need to be dried. The raw material particles enter the drying cylinder 1 after passing through the electric heating tube 202 to achieve preliminary preheating and drying, reducing the entry of moisture;

[0032] A rotating shaft 3 is rotatably connected between the two ends of the drying cylinder 1. Stirring blades 301 arranged in a staggered manner are fixed on the outer circumference of the rotating shaft 3 in the inner cavity of the drying cylinder 1. The stirring blades 301 are arc-shaped, and the inner arc surface of the stirring blades 301 is set as a mesh surface 3011.

[0033] The inner cavity of the rotating shaft 3 is fixed with electric heating tubes 302 distributed in a circular array;

[0034] A small air compressor 4 is fixed on an outer end surface of the drying cylinder 1;

[0035] The rotation of the rotating shaft 3 can drive the stirring blade 301 on its outer periphery to rotate, and the rotation direction is toward the inner arc surface (i.e., the mesh surface 3011) of the stirring blade 301, thereby scooping up and stirring the polypropylene particles at the bottom of the drying cylinder 1, and then dropping and scooping up again after circular motion. At the same time, the electric heating tube 2 302 in the drying cylinder 1 works to generate heat, and the small air compressor 4 works to blow air into the inner cavity of the rotating shaft 3 through the air pipe 401. Finally, the heat is blown out from the mesh surface 3011 of the stirring blade 301, thereby performing a rapid hot air drying process on the polypropylene particles scooped up on the mesh surface 3011. Because the amount of material scooped up each time is not large, it will not cause excessive accumulation, and the scooped raw material particles are turned over, and the hot air drying will also turn over, so that the particles keep moving, and a rapid and comprehensive drying process is achieved.

[0036] Two fans 201 are symmetrically fixed on the upper end of the feed chute 2, and the blowing direction of the two fans 201 is toward the inside of the feed chute 2; the spacing between adjacent electric heating tubes 202 is greater than the particle size of the woven bag raw material particles;

[0037] The fan 201 can blow the heat generated by the electric heating tube 202 into the drying cylinder 1 to increase the heat temperature inside the drying cylinder 1. Secondly, because the distance between adjacent electric heating tubes 202 is larger than the particle size of the woven bag raw material particles, the particles can only pass evenly through the gaps between the electric heating tubes 202, but will not enter directly in large quantities. Moreover, when the particles contact the electric heating tube 202, a certain amount of moisture will be taken away, thereby achieving preliminary drying and preheating treatment.

[0038] The end of the stirring blade 301 close to the rotating shaft 3 is shorter than the end of the stirring blade 301 away from the rotating shaft 3, and the two side surfaces of the stirring blade 301 adjacent to the mesh surface 3011 are also curved surfaces; a large amount of particles can be scooped up and then quickly dried and dropped.

[0039] The inner cavity of the rotating shaft 3 is interconnected with the inner cavity of the stirring blade 301, and the rotating diameter of the stirring blade 301 is smaller than the inner diameter of the drying cylinder 1, so that heat can be quickly transferred from the inner cavity of the rotating shaft 3 to the stirring blade 301, and then transmitted and discharged from the mesh surface 3011.

[0040] Both ends of the rotating shaft 3 extend out of the drying cylinder 1, and an air pipe 401 is fixed to the air outlet end of the small air compressor 4, and the end of the air pipe 401 away from the small air compressor 4 is connected to the end of the rotating shaft 3 close to it in a through-type rotational connection;

[0041] A bearing is fixed on the end of the rotating shaft 3 close to the small air compressor 4. The outer ring of the bearing is fixed to the rotating shaft 3, and the inner ring of the bearing is fixed to the air pipe 401. Therefore, when the rotating shaft 3 rotates, the air pipe 401 will not rotate accordingly. At this time, the compressed air generated by the operation of the small air compressor 4 will be input into the inner cavity of the rotating shaft 3 through the air pipe 401, blowing the heat in the inner cavity of the rotating shaft 3 to produce a hot air effect.

[0042] A bracket 101 is fixed to one end of the drying cylinder 1 away from the small air compressor 4, and a motor 102 is fixed to the bracket 101, and the output shaft of the motor 102 is fixedly connected to the end of the rotating shaft 3 close to it; the bracket 101 is used to install and fix the motor 102, and the motor 102 is used to drive the rotating shaft 3 to rotate.

[0043] Equidistantly distributed and square discharge pipes 103 are fixed through the bottom of the drying cylinder 1, and each discharge pipe 103 is provided with a gate valve 1031; the discharge pipe 103 can be used to discharge the dried polypropylene particles, and the opening and closing of the discharge pipe 103 is controlled by the gate valve 1031.

[0044] The specific working principle of the utility model is as follows: first, the woven bag raw material particles to be dried are added from the feed chute 2, and at this time, the fan 201 can blow the heat generated by the electric heating tube 202 into the drying cylinder 1 to increase the heat temperature in the drying cylinder 1. Because the spacing between adjacent electric heating tubes 202 is larger than the particle size of the woven bag raw material particles, the particles can only pass through the gaps between the electric heating tubes 202 evenly, and will not enter directly in large quantities. Moreover, the particles will also take away a certain amount of moisture when they contact the electric heating tube 202, thereby realizing a preliminary drying and preheating treatment;

[0045] Subsequently, the particles enter the drying cylinder 1, and the motor 102 drives the rotating shaft 3 to rotate. The rotation of the rotating shaft 3 can drive the stirring blades 301 on its periphery to rotate, and then scoop up the polypropylene particles at the bottom of the drying cylinder 1 and stir them. After circular motion, the particles fall down and are scooped up again. At this time, the electric heating tube 2 302 in the drying cylinder 1 works to generate heat, and the small air compressor 4 works to blow air into the inner cavity of the rotating shaft 3 through the air pipe 401. Finally, the heat is blown out from the mesh surface 3011 of the stirring blade 301, thereby performing a rapid hot air drying process on the polypropylene particles scooped up from the mesh surface 3011. Because the amount of material scooped up is not large, it will not cause excessive accumulation, and the scooped raw material particles are constantly turned over, and the particles dried by the hot air from the mesh surface 3011 will also be turned over, so that the particles keep moving, and a rapid and comprehensive drying process is achieved.

[0046] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A drying and mixing machine for recycling raw materials of woven bags, comprising a drying cylinder (1), a material feeding channel (2), a rotating shaft (3) and a small air compressor (4), characterized in that: The drying cylinder (1) is placed horizontally, and a feed channel (2) is fixedly passed through the upper part of the drying cylinder (1), and electric heating tubes (202) distributed at equal intervals are fixed in the feed channel (2); A rotating shaft (3) is rotatably connected between the two ends of the drying cylinder (1); stirring blades (301) arranged in a staggered manner are fixed on the outer circumferential surface of the rotating shaft (3) located in the inner cavity of the drying cylinder (1); the stirring blades (301) are arc-shaped, and the inner arc surface of the stirring blades (301) is a mesh surface (3011); The inner cavity of the rotating shaft (3) is fixed with electric heating tubes (302) distributed in a ring array; A small air compressor (4) is fixed on an outer end surface of the drying cylinder (1).

2. A drying and mixing machine for recycling raw materials from woven bags according to claim 1, characterized in that: Two fans (201) are symmetrically fixed to the upper end of the feed chute (2), and the blowing direction of the two fans (201) is toward the inside of the feed chute (2); the spacing between adjacent electric heating tubes (202) is greater than the particle size of the woven bag raw material particles.

3. The dry mixer for recycling raw materials from woven bags according to claim 1, characterized in that: The end of the stirring blade (301) close to the rotating shaft (3) is shorter than the end of the stirring blade (301) away from the rotating shaft (3), and the two side surfaces of the stirring blade (301) adjacent to the mesh surface (3011) are also arc surfaces.

4. The dry mixer for recycling raw materials from woven bags according to claim 1, characterized in that: The inner cavity of the rotating shaft (3) is interconnected with the inner cavity of the stirring blade (301), and the rotation diameter of the stirring blade (301) is smaller than the inner diameter of the drying cylinder (1).

5. The dry mixer for recycling raw materials from woven bags according to claim 1, characterized in that: Both ends of the rotating shaft (3) extend out of the drying cylinder (1); an air pipe (401) is fixed to the air outlet end of the small air compressor (4); and an end of the air pipe (401) away from the small air compressor (4) is rotatably connected to an end of the rotating shaft (3) close thereto in a through-type manner.

6. The drying and mixing machine for recycling raw materials of woven bags according to claim 1, characterized in that: A bracket (101) is fixed to one end of the drying cylinder (1) away from the small air compressor (4), and a motor (102) is fixed to the bracket (101). The output shaft of the motor (102) is fixedly connected to the end of the rotating shaft (3) adjacent to the motor (102).

7. The dry mixer for recycling raw materials from woven bags according to claim 1, characterized in that: Equidistantly distributed and square-shaped discharge pipes (103) are fixedly passed through the bottom of the drying cylinder (1), and each discharge pipe (103) is provided with a gate valve (1031).

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