A mixing device for producing stone plastic composite floor

Abstract

The present application belongs to the technical field of pulverizing and mixing integrated machine, and particularly relates to a mixing equipment for producing stone-plastic composite floor. The present application sets up a mixing frame unit, an arc-shaped opening box unit, a rotary pulverizing kettle unit, a rotating shaft, a pulverizing stirring column, a driving motor and a direct mixing frame unit on the mounting frame unit, so that: 1, fine materials with required particle size can be added at the direct mixing frame unit without passing through the rotary pulverizing kettle unit, and finally are also fully mixed, improving the efficiency of pulverizing operation; 2, the rotary pulverizing kettle unit has a vertical rotation function, ensuring that the materials to be pulverized can fully contact the pulverizing stirring column, further improving the pulverizing efficiency and degree; 3, the mixing operation in the mixing frame unit has sufficient uniformity.

Description

Technical Field

[0001] This invention belongs to the technical field of integrated crushing and mixing machines, and particularly relates to a mixing device for producing stone-plastic composite flooring. Background Technology

[0002] Stone-plastic composite flooring primarily consists of a stone powder base layer and a PVC surface layer. Commonly used stone powder raw materials for stone-plastic composite flooring include marble powder, granite powder, calcite powder, and limestone powder. In addition to stone powder, the stone powder base layer also requires appropriate amounts of stabilizers, plasticizers, and colorants.

[0003] Therefore, in the preparation of stone powder base layer, a crusher and a mixer are required. The former is used to further crush the coarse stone powder, and the latter is used to mix all the raw materials together evenly.

[0004] Generally, a single integrated crushing and mixing machine, i.e., the mixing equipment mentioned above, can meet the two requirements. On the other hand, the crushing operation itself has a mixing effect, so in this mixing equipment, the crushing operation is more important than the mixing operation, and it is essential to ensure that all stone powder has the required particle size.

[0005] For example, Chinese utility model patent with patent publication number CN218803285U and publication date of April 7, 2023, discloses a high-speed mixing device for raw materials in the production of stone plastic flooring, including a tank, a base for supporting the tank, and a tank cover. The tank cover is provided with multiple raw material inlets, and the tank is provided with a raw material outlet. A rotating plate is provided inside the tank, which divides the tank into an upper tank and a lower tank. A mixing mechanism for preliminary mixing and crushing of raw materials is rotatably provided inside the upper tank, and a stirring mechanism for further mixing of raw materials is rotatably provided inside the lower tank. A roller is provided inside the upper tank, and a sliding space is formed between the roller and the upper tank. The roller is provided with through holes for screening the size of raw materials.

[0006] The high-speed mixing device in this utility model patent has the following structure, principle, and advantages: The mixing mechanism initially mixes the raw materials in the upper tank and crushes any fragments in the raw materials that do not meet production requirements. The roller rotates in the opposite direction to the mixing mechanism. The raw materials are thrown out through the through holes on the roller, reach the area between the upper tank and the roller, and slide down the upper tank to the lower tank. During the descent, the raw materials can be further mixed. When the raw materials enter the lower tank, they are stirred by the stirring mechanism and mixed again to ensure that the discharged raw materials are fully mixed and meet the production requirements of stone-plastic base plates.

[0007] However, in actual use, this high-speed mixing device still has at least two shortcomings, which are also the technical problems that this invention aims to solve: First, it has only one feeding position, so fine materials that do not need to be crushed and whose particle size meets the requirements have to go through the upper tank, which increases the workload of the crushing operation and will also greatly reduce the efficiency of the crushing operation, so that large particles cannot be fully crushed. Secondly, the upward return and multiple crushing effects of its crushing operation can only be achieved by pushing the spiral blades upward, which is very inefficient. Ultimately, large particles tend to settle on the surface of the rotating plate and cannot be crushed in a timely and sufficient manner.

[0008] Therefore, in summary, there is an urgent need for a mixing equipment with targeted crushing operation, higher crushing efficiency, and more thorough crushing for the production of stone-plastic composite flooring. Summary of the Invention

[0009] This invention provides a mixing device for producing stone-plastic composite flooring. By assembling a mixing frame unit, an arched perforated box unit, a rotary pulverizer unit, a rotating shaft, a pulverizing and stirring column, a drive motor, and a direct mixing frame unit on a mounting frame unit, the following advantages are achieved: 1. Fine materials with the required particle size can be added directly to the mixing frame unit without passing through the rotary pulverizer unit, achieving thorough mixing and improving pulverization efficiency; 2. The rotary pulverizer unit has a vertical rotation function, ensuring that the material to be pulverized can fully contact the pulverizing and stirring column, further improving pulverization efficiency and degree; 3. The mixing operation within the mixing frame unit has sufficient uniformity.

[0010] The technical solution adopted by the present invention to solve the above problems is: a mixing device for producing stone-plastic composite flooring, the structure of which includes a rotating shaft, a crushing and stirring column, and a drive motor, and also includes a mounting frame unit, a mixing frame unit disposed on the mounting frame unit, an arc-shaped opening box unit inserted into the mixing frame unit, a rotary crushing kettle unit inserted into the arc-shaped opening box unit and mounting the rotating shaft, and a direct mixing frame unit disposed on the mounting frame unit and used to engage the arc-shaped opening box unit.

[0011] A further preferred technical solution is that the mounting frame unit includes a base plate and a side vertical plate disposed on the base plate and used to mount the direct mixing frame unit.

[0012] A further preferred technical solution is that the mixing frame unit includes two intermediate plates disposed on the base plate and used to support the bow-shaped opening box unit, two side plates disposed on the base plate and the two intermediate plates and used to engage the bow-shaped opening box unit, and a discharge port disposed on one of the intermediate plates.

[0013] A further preferred technical solution is that: the bow-shaped opening box unit includes an arc-shaped plate disposed on the two intermediate plates and used to expose the drive motor, two bow-shaped plates respectively disposed on both sides of the arc-shaped plates, a central opening disposed on the bow-shaped plates and used to insert the rotary pulverizer unit, a discharge port disposed on the arc-shaped plates and used to connect the mixing frame unit, and a fine material port disposed on the arc-shaped plates and used to connect the direct mixing frame unit.

[0014] A further preferred technical solution is that the rotary pulverizing vessel unit includes two mounting shafts respectively disposed on the two central openings, a vessel body disposed on the two mounting shafts and on the rotating shaft, and pulverized material discharge holes disposed on the bottom plate and the annular plate of the vessel body.

[0015] A further preferred technical solution is that the direct mixing frame unit includes a horizontal rectangular frame disposed on the side vertical plate, which inserts and engages with the two bow-shaped plates and is used to connect the fine material inlet, and a fine material adding tube disposed on the top plate of the horizontal rectangular frame.

[0016] A further preferred technical solution is that the bow-shaped opening box unit further includes two end plates respectively disposed at both ends of the arc-shaped plate and connecting the two bow-shaped plates, and two elastic membranes disposed on the two bow-shaped plates and the two end plates and used to clamp the vessel body.

[0017] A further preferred technical solution is that the rotary pulverizing reactor unit further includes an upper feed pipe and a lower impurity discharge pipe disposed on the reactor body and located outside the elastic membrane, and used for limiting the rotation angle on the end plate.

[0018] A further preferred technical solution is that the mixing frame unit further includes two connecting track plates disposed on the lower end plate and one of the intermediate plates, and a vertical cover plate disposed on the connecting track plates and used to cover the discharge port.

[0019] A further preferred technical solution is that the rotary pulverizer unit also includes an outer gear disposed on the mounting shaft. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the mounting bracket unit in this invention.

[0022] Figure 3 This is a schematic diagram of the bow-shaped perforated box unit in this invention.

[0023] Figure 4 This is a schematic diagram illustrating the usage of the two elastic membranes in this invention.

[0024] Figure 5 This is a schematic diagram of the rotary pulverizing reactor unit in this invention.

[0025] Figure 6 This is a schematic diagram illustrating the usage of the rotary pulverizer unit in this invention.

[0026] Figure 7 This is a schematic diagram of the position and structure of the mixing frame unit in this invention.

[0027] Figure 8 This is a schematic diagram showing the position and shape of the two connecting track plates in this invention.

[0028] Figure 9 This is a schematic diagram of the positional structure of the frame unit used for direct mixing in this invention.

[0029] Figure 10 This is a schematic diagram illustrating the usage of the fine feed inlet in this invention.

[0030] The meanings of the markings in the diagram are as follows: a) The direction of fall of the material to be crushed; b) The direction of fall of the qualified crushed material; c) The direction of fall of the fine material. Rotating shaft 11, crushing and stirring column 12, drive motor 13; Mounting frame unit 1, mixing frame unit 2, bow-shaped perforated box unit 3, rotary pulverizer unit 4, direct mixing frame unit 5; Base plate 101, side vertical plate 102, shaft mounting plate 103, middle plate 201, side plate 202, discharge port 203, arc plate 301, bow plate 302, central opening 303, discharge port 304, fine material port 305, mounting shaft 401, kettle body 402, crushed material discharge hole 403, horizontal rectangular frame 501, fine material addition pipe 502, end plate 306, elastic membrane 307, upper feed pipe 404, lower impurity discharge pipe 405, connecting track plate 204, vertical cover plate 205, mixing and reinforcing dual-purpose rod 206, outer gear 406. Detailed Implementation

[0031] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0032] As attached Figure 1-10As shown, a mixing device for producing stone-plastic composite flooring includes a rotating shaft 11, a crushing and mixing column 12, and a drive motor 13. It also includes a mounting frame unit 1, a mixing frame unit 2 mounted on the mounting frame unit 1, an arc-shaped perforated box unit 3 inserted into the mixing frame unit 2, a rotary crushing kettle unit 4 inserted into the arc-shaped perforated box unit 3 and mounting the rotating shaft 11, and a direct mixing frame unit 5 mounted on the mounting frame unit 1 and used to engage the arc-shaped perforated box unit 3.

[0033] In this embodiment, the crushing and stirring column 12 is inserted and installed inside the rotary crushing kettle unit 4 to ensure the basic crushing and mixing effect.

[0034] Fine materials with relatively small particle sizes that fall within a preset range are added directly to the direct mixing frame unit 5, then slide down into the bow-shaped perforated box unit 3, and finally mix with the pulverized material that leaked out from the rotary pulverizer unit 4 in the mixing frame unit 2, thus achieving sufficient uniformity. This method can greatly reduce the workload of the rotary pulverizer unit 4.

[0035] On the other hand, the falling speed of the fine material is controlled to be relatively low, and the already crushed material is falling continuously and in small amounts. Therefore, the two materials converge in the mixing frame unit 2, which can achieve a sufficient degree of uniformity. In other words, the mixing device in this embodiment is characterized by crushing as the main function and mixing as a secondary function.

[0036] One of the vertical cross-sectional shapes of the bow-shaped perforated box unit 3 is an arc-shaped bow, which is intended to provide the rotary pulverizer unit 4 with a relatively sealed space that can rotate vertically and is not prone to dust generation.

[0037] Furthermore, the lower part of the bow-shaped perforated box unit 3 is secured within the mixing frame unit 2, and the side furthest from the drive motor 13 is secured within the direct mixing frame unit 5. Therefore, the bow-shaped perforated box unit 3 is not easily tilted to the left or right.

[0038] Finally, the rotary pulverizer unit 4 is inserted into the bow-shaped perforated box unit 3 at a relatively central position, so that the rotary pulverizer unit 4 can rotate upward and downward by an acute angle from the horizontal state, ensuring that the material to be pulverized a can fully contact the pulverizing and stirring column 12, thereby improving the efficiency and degree of pulverization operation.

[0039] The mounting frame unit 1 includes a base plate 101 and a side vertical plate 102 disposed on the base plate 101 and used to mount the direct mixing frame unit 5.

[0040] In this embodiment, both the mixing frame unit 2 and the direct mixing frame unit 5 are "four-sided closed" structures, that is, both are rectangular frame structures. The bottom plate 101 is the "fifth side" of the mixing frame unit 2, and the side vertical plate 102 is the "fifth side" of the direct mixing frame unit 5.

[0041] The "sixth side" of the mixing frame unit 2 and the direct mixing frame unit 5 is used to insert and install the bow-shaped opening box unit 3, ensuring that the bow-shaped opening box unit 3 is not easy to tilt to the left or right.

[0042] In other words, the bow-shaped perforated box unit 3 can essentially rotate vertically at this time.

[0043] The mixing frame unit 2 includes two intermediate plates 201 disposed on the base plate 101 and used to support the bow-shaped opening box unit 3, two side plates 202 disposed on the base plate 101 and the two intermediate plates 201 and used to engage the bow-shaped opening box unit 3, and a discharge port 203 disposed on one of the intermediate plates 201.

[0044] In this embodiment, the middle plate 201 and the side plate 202 are both rectangular in shape, forming a vertical rectangular frame. The two middle plates 201 are used to support the bow-shaped opening box unit 3, while the two side plates 202 are used to engage the bow-shaped opening box unit 3.

[0045] The arc-shaped perforated box unit 3 includes an arc-shaped plate 301 disposed on the two intermediate plates 201 and used to expose the drive motor 13, two arc-shaped plates 302 respectively disposed on both sides of the arc-shaped plate 301, a central opening 303 disposed on the arc-shaped plate 302 and used to insert the rotary pulverizer unit 4, a discharge port 304 disposed on the arc-shaped plate 301 and used to connect the mixing frame unit 2, and a fine material port 305 disposed on the arc-shaped plate 301 and used to connect the direct mixing frame unit 5.

[0046] In this embodiment, the shape of the bow-shaped plate 302 is a superior arc, so correspondingly, the central angle of the arc-shaped plate 301 is greater than 180°. These three plates together form the vertical rotation space of the rotary crushing kettle unit 4, making the space appropriately enclosed, because the dust is essentially qualified stone material with a smaller particle size, which should not fall and be wasted.

[0047] In addition, the opening size of the fine material inlet 305 is much smaller than that of the discharge port 304, ensuring that fine materials that do not need to be crushed can continuously and slowly enter and slide down at the fine material inlet 305, so that no additional stirring structure is needed at the mixing frame unit 2.

[0048] The rotary pulverizer unit 4 includes two mounting shafts 401 respectively disposed on the two central openings 303, a vessel body 402 disposed on the two mounting shafts 401 and on the rotating shaft 11, and pulverized material discharge holes 403 disposed on the bottom plate and the annular plate of the vessel body 402.

[0049] In this embodiment, both the mounting shaft 401 and the vessel body 402 are made of lightweight steel to minimize the load on the bow-shaped perforated box unit 3. The crushed material discharge hole 403 on the annular plate can be opened in a full circle or only in the lower part of the vessel body 402, ensuring that the crushed material can leave the vessel body 402 and enter the bow-shaped perforated box unit 3.

[0050] On the other hand, two more shaft mounting plates 103 can be provided on the base plate 101 for inserting and supporting the mounting shaft 401. The ultimate goal is to reduce the load-bearing pressure on the bow-shaped perforated box unit 3 and prevent it from being crushed by the rotary crushing vessel unit 4.

[0051] The direct mixing frame unit 5 includes a horizontal rectangular frame 501 disposed on the side vertical plate 102, which inserts and engages with the two bow-shaped plates 302 and is used to connect the fine material inlet 305, and a fine material adding tube 502 disposed on the top plate of the horizontal rectangular frame 501.

[0052] In this embodiment, the fine material addition tube 502 is used to add plasticizers, colorants and other additives that are originally fine powders, as well as the undersize material obtained from sieving the stone powder raw material at the beginning.

[0053] The fine material inlets 305 are all located within the lateral openings of the horizontal rectangular frame 501, ensuring that the fine material is fed into the fine material inlets 305 at a relatively slow speed, so that the fine material has fallen into the ground before the crushing operation is completed.

[0054] The bow-shaped perforated box unit 3 further includes two end plates 306 respectively disposed at both ends of the arc-shaped plate 301 and connecting the two bow-shaped plates 302, and two elastic membranes 307 disposed on the two bow-shaped plates 302 and the two end plates 306 and used to clamp the vessel body 402.

[0055] In this embodiment, the function of the two elastic membranes 307 is to further improve the airtightness of the bow-shaped perforated box unit 3 while allowing the vessel body 402 to rotate, thereby preventing large-scale dust generation.

[0056] In addition, the arc-shaped plate 301 and the bow-shaped plate 302 are both made of high-strength lightweight steel, and the end plate 306 is made of rubber. The function of the end plate 306 is to prevent the vessel body 402 from directly hitting the arc-shaped plate 301 when it is accidentally rotated too much. Its elasticity can provide appropriate buffering and protection.

[0057] The rotary pulverizer unit 4 also includes an upper feed pipe 404 and a lower impurity discharge pipe 405, which are disposed on the reactor body 402 and located outside the elastic membrane 307, and are used to limit the rotation angle on the end plate 306.

[0058] In this embodiment, the upper feed pipe 404, the lower impurity discharge pipe 405, and the drive motor 13 are always located outside the two elastic membranes 307 throughout the entire rotation of the rotary pulverizer unit 4.

[0059] The upper feed pipe 404 is used to add the sieve material that does not meet the particle size requirements obtained from the initial sieving of stone powder raw materials, while the lower impurity discharge pipe 405 is used to discharge impurities that are difficult to crush even after long-term impact and crushing.

[0060] The mixing frame unit 2 also includes two connecting track plates 204 disposed on the lower end plate 306 and one of the intermediate plates 201, and a vertical cover plate 205 disposed on the connecting track plates 204 and used to cover the discharge port 203.

[0061] In this embodiment, the first function of the connecting track plate 204 is "connection". It simultaneously fixes the middle plate 201 and the end plate 306 below it, ultimately preventing the bow-shaped opening box unit 3 from rotating vertically and avoiding the end plate 306 from actively bumping into the vessel body 402.

[0062] The second function of the connecting track plate 204 is, together with the vertical cover plate 205, to provide a stable and orderly opening and closing function for the discharge port 203, ensuring that the mixed stone can be discharged as needed.

[0063] The connecting track plate 204 has an L-shaped or U-shaped cross-section to laterally lock the vertical cover plate 205, so that the latter can only slide vertically.

[0064] The rotary pulverizer unit 4 also includes an outer gear 406 disposed on the mounting shaft 401.

[0065] In this embodiment, the outer gear 406, in conjunction with an external motor and rack, is one of the ways to achieve the vertical reciprocating rotation of the rotary pulverizer unit 4.

[0066] The outer gear 406 can be located either inside or outside the shaft mounting plate 103.

[0067] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of the present invention. These are non-inventive modifications and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A mixing device for producing stone-plastic composite flooring, comprising a rotating shaft (11), a crushing and mixing column (12), and a drive motor (13), characterized in that: It also includes a mounting frame unit (1), a mixing frame unit (2) disposed on the mounting frame unit (1), an arc-shaped perforated box unit (3) inserted on the mixing frame unit (2), a rotary pulverizer unit (4) inserted on the arc-shaped perforated box unit (3) and on which the rotating shaft (11) is mounted, and a direct mixing frame unit (5) disposed on the mounting frame unit (1) and used to engage the arc-shaped perforated box unit (3). The mounting frame unit (1) includes a base plate (101) and a side vertical plate (102) disposed on the base plate (101) and used to mount the direct mixing frame unit (5). The mixing frame unit (2) includes two intermediate plates (201) disposed on the base plate (101) and used to support the bow-shaped opening box unit (3), two side plates (202) disposed on the base plate (101) and the two intermediate plates (201) and used to engage the bow-shaped opening box unit (3), and a discharge port (203) disposed on one of the intermediate plates (201). The bow-shaped perforated box unit (3) includes an arc-shaped plate (301) disposed on the two intermediate plates (201) and used to expose the drive motor (13), two bow-shaped plates (302) respectively disposed on both sides of the arc-shaped plate (301), a central opening (303) disposed on the bow-shaped plate (302) and used to insert the rotary pulverizer unit (4), a discharge port (304) disposed on the arc-shaped plate (301) and used to connect the mixing frame unit (2), and a fine material port (305) disposed on the arc-shaped plate (301) and used to connect the direct mixing frame unit (5). The rotary pulverizer unit (4) includes two mounting shafts (401) respectively disposed on the two central openings (303), a vessel body (402) disposed on the two mounting shafts (401) and the rotating shaft (11) disposed thereon, and pulverized material discharge holes (403) disposed on the bottom plate and the annular plate of the vessel body (402). The bow-shaped perforated box unit (3) further includes two end plates (306) respectively disposed at both ends of the arc-shaped plate (301) and connecting the two bow-shaped plates (302), and two elastic membranes (307) disposed on the two bow-shaped plates (302) and the two end plates (306) for clamping the vessel body (402). The vertical cross-sectional shape of the bow-shaped perforated box unit (3) is an arc-shaped bow. The bow-shaped perforated box unit (3) provides the rotary pulverizer unit (4) with a relatively sealed space that can rotate vertically and is not prone to dust.

2. The mixing equipment for producing stone-plastic composite flooring according to claim 1, characterized in that: The direct mixing frame unit (5) includes a horizontal rectangular frame (501) disposed on the side vertical plate (102), which inserts and engages with two of the bow-shaped plates (302) and is used to connect the fine material inlet (305), and a fine material adding tube (502) disposed on the top plate of the horizontal rectangular frame (501).

3. The mixing equipment for producing stone-plastic composite flooring according to claim 1, characterized in that: The rotary pulverizer unit (4) further includes an upper feed pipe (404) and a lower impurity discharge pipe (405) disposed on the vessel body (402) and located outside the elastic membrane (307), and used for rotation angle blocking and limiting on the end plate (306).

4. A mixing device for producing stone-plastic composite flooring according to claim 1, characterized in that: The mixing frame unit (2) further includes two connecting track plates (204) disposed on the lower end plate (306) and one of the intermediate plates (201), and a vertical cover plate (205) disposed on the connecting track plate (204) and used to cover the discharge port (203).

5. A mixing device for producing stone-plastic composite flooring according to claim 1, characterized in that: The rotary pulverizer unit (4) also includes an outer gear (406) disposed on the mounting shaft (401).

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