Preparation device and process of pp material

Abstract

The application discloses a kind of preparation device and process of PP material, it is related to PP material preparation technical field, it is solved that the mixing and hot melt of existing preparation of PP material when batching are easy to interfere with each other, cause the batching ratio of PP material is not accurate, and in preparation process, the waste heat of each process is not convenient for recycling etc. The preparation device of the PP material includes installation display mechanism, mixed injection mechanism and circulating heat exchange mechanism, the inside of the upper end of installation display mechanism is equipped with mixed injection mechanism, the inside of the bottom of installation display mechanism is equipped with material conveying and forming mechanism, the mixed injection mechanism is connected with material conveying and forming mechanism by circulating heat exchange mechanism, and the installation display mechanism includes installation shell.The batching of PP material is mixed and hot melt separation in the application, the batching ratio can be accurately controlled, meanwhile, the waste heat generated in each process during preparation molding can be recycled, to reduce energy waste.

Description

Technical Field

[0001] This invention relates to the field of PP material preparation technology, specifically to a PP material preparation apparatus and process. Background Technology

[0002] PP material generally refers to polypropylene, a thermoplastic resin obtained by polymerizing propylene. It is a white, waxy material, transparent and lightweight. Polypropylene is classified into three types according to the arrangement of methyl groups: isotactic polypropylene, atactic polypropylene, and syndiotactic polypropylene. It is widely used in fiber products and other fields. Polypropylene (PP) resin is the lowest density material among general-purpose plastics, possessing good strength, heat resistance, electrical properties, insulation, and resistance to organic solvents. Existing methods for preparing PP materials suffer from problems such as interference between mixing and melting of ingredients, resulting in inaccurate ingredient ratios and difficulties in recycling waste heat from each step. Therefore, these methods do not meet current requirements. To address this, we propose a PP material preparation apparatus and process. Summary of the Invention

[0003] The purpose of this invention is to provide a PP material preparation apparatus and process to solve the problems mentioned in the background art, such as the mutual interference between the mixing and hot melting of the ingredients during the preparation of PP materials, resulting in inaccurate ingredient ratios and the inconvenience of recycling the waste heat from each process.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A PP material preparation apparatus includes a display mounting mechanism, a mixing and injection mechanism, and a circulating heat exchange mechanism. The mixing and injection mechanism is installed on the inner side of the upper end of the display mounting mechanism, and a material conveying and forming mechanism is installed on the inner side of the bottom end of the display mounting mechanism. The mixing and injection mechanism and the material conveying and forming mechanism are connected through the circulating heat exchange mechanism. The display mounting mechanism includes a mounting shell, a sealing cover plate is fixedly installed on the upper end of the mounting shell, a display is fixedly installed on the front end face of the mounting shell, and a separation partition is fixedly installed on the inner side of the bottom end of the mounting shell.

[0006] The mixing and feeding mechanism includes a supporting partition plate, which is fixedly connected to the mounting shell. A transmission box is fixedly installed on the upper surface of the supporting partition plate. A first transmission sprocket is rotatably connected to the inner side of one end of the transmission box, and a second transmission sprocket is rotatably connected to the inner side of the other end of the transmission box. A first stirring shaft is installed on the inner side of the first transmission sprocket, and a first stirring frame is fixedly installed at the bottom end of the first stirring shaft. A second stirring shaft is installed on the inner side of the second transmission sprocket, and multiple second stirring frames are fixedly installed at the bottom end of the second stirring shaft. A first transmission motor is fixedly installed on the lower surface of the sealing cover plate. A premixing tank and a direct mixing tank are fixedly installed on the lower surface of the supporting partition plate. A first feeding pipe and a second feeding pipe are installed on the inner side of the upper end of the premixing tank. A conveying bend is installed at the bottom end of the premixing tank and the direct mixing tank, and a heating sleeve is fixedly installed on the outer side of the middle part of the conveying bend.

[0007] Preferably, the material conveying and forming mechanism includes a material conveying sleeve, which is fixedly connected to the mounting shell. A plurality of forming straight tubes are fixedly installed at one end of the material conveying sleeve, and a conical discharge hood is installed on the outer side of one end of the plurality of forming straight tubes. A sealing cover is fixedly installed at the other end of the material conveying sleeve, and a second drive motor is fixedly installed on one side of the sealing cover. The output end of the second drive motor passes through the sealing cover and is connected to a screw conveyor frame through a coupling.

[0008] Preferably, the circulating heat exchange mechanism includes a waste heat recovery hollow base, which is fixedly connected to a heating jacket. A second conveying pipe is provided at one end of the waste heat recovery hollow base. A heat preservation tank is installed at the bottom end of the second conveying pipe. A third conveying pipe is provided on the upper surface of the heat preservation tank, located on one side of the second conveying pipe. A preheating tank is fixedly installed at the upper end of the third conveying pipe. Cooling boxes are fixedly installed on both sides of the heat preservation tank below the preheating tank. A fourth conveying pipe is provided between the cooling boxes and the preheating tank. A vent plate is fixedly installed on one side of the cooling box. A fan box is fixedly installed in the middle of the vent plate. A cooling forming tank is installed at one end of the heat preservation tank. A fifth conveying pipe is provided between the cooling forming tank and both cooling boxes. A first conveying pipe is provided between the cooling forming tank and the waste heat recovery hollow base.

[0009] Preferably, the upper end of the first stirring shaft passes through the support partition and the transmission box and is fixedly connected to the first transmission sprocket; the upper end of the second stirring shaft passes through the support partition, the transmission box and the second transmission sprocket and is connected to the output end of the first transmission motor via a coupling; the second stirring shaft is fixedly connected to the second transmission sprocket; and a chain is provided between the first transmission sprocket and the second transmission sprocket.

[0010] Preferably, the bottom ends of the first and second feeding pipes both pass through the sealing cover and the supporting partition and are inserted into the inside of the premix tank. The premix tank and the mixing tank are connected through a conveying bend. The heating jacket is equipped with an electric heating resistance wire inside.

[0011] Preferably, the bottom end of the positive mixing tank is connected to the conveying sleeve, the conveying sleeve passes through the heat preservation tank and is connected to multiple forming straight pipes, the conical discharge hood is fixedly connected to the mounting shell, and the forming straight pipe passes through the cooling forming tank and is connected to the conical discharge hood.

[0012] Preferably, the inner side of the cooling molding tank is filled with a heat-conducting medium, which is sequentially fed into the interior of the waste heat recovery hollow base, the heat preservation tank, the preheating tank, the cooling box and the cooling molding tank through the first conveying pipe, the second conveying pipe, the third conveying pipe, the fourth conveying pipe and the fifth conveying pipe. The cooling molding tank and the waste heat recovery hollow base are connected through the first conveying pipe.

[0013] The present invention also provides a process for preparing PP material, applied to the PP material preparation apparatus described above, the PP material preparation process comprising the following steps:

[0014] S1: The interior of the cooling molding tank is filled with a heat-conducting medium, which is then conveyed sequentially through the first conveying pipe, the second conveying pipe, the third conveying pipe, the fourth conveying pipe and the fifth conveying pipe inside the waste heat recovery hollow seat, the heat preservation tank, the preheating tank, the cooling box and the cooling molding tank. The power is turned on, and the ingredients for preparing PP material are fed into the inside of the premix tank through the first feeding pipe and the second feeding pipe.

[0015] S2: Start the first drive motor. The first drive sprocket and the second drive sprocket are driven by a chain, so that the first drive motor drives the first drive sprocket, the second drive sprocket and the chain through the second stirring shaft, thereby realizing that the second stirring shaft and the first stirring shaft rotate in the same direction, and the rotation speed of the first stirring shaft is lower than that of the second stirring shaft. The first stirring shaft performs a premixing operation on the PP material through the first stirring frame. After the premixing is completed, the mixture is conveyed through the conveying bend pipe.

[0016] S3: A heating sleeve is fixedly installed on the outer side of the middle part of the conveying bend, and an electric heating resistance wire is provided inside the heating sleeve, so that the mixture conveyed by the conveying bend can be melted into clinker through the heating sleeve and guided to the inside of the mixing tank. At the same time, the waste heat of the heating sleeve can be absorbed by the waste heat recovery hollow seat and conveyed to the inside of the heat preservation tank through the second conveying pipe. The second stirring shaft fully stirs the clinker through the second stirring frame and then conveys it to the inside of the conveying sleeve.

[0017] S4: Start the second drive motor, which, under the support of the sealing cover, drives the rotation of the screw conveyor to push the clinker. The heat-conducting medium inside the insulation tank can keep the clinker warm, preventing cooling and solidification from causing blockage inside the conveying sleeve. The insulation tank and the preheating tank are connected through the third conveying pipe. The heat-conducting medium inside the insulation tank can be input into the inside of the preheating tank through the third conveying pipe to preheat the PP material in the preheating tank, thereby increasing the rate of heat melting of the material by the heating jacket.

[0018] S5: The preheating tank introduces the heat transfer medium into the cooling box through the fourth conveying pipe. The cooling box is cooled by the fan box. Then, the cooling box introduces the heat transfer medium into the cooling molding tank through the fifth conveying pipe. The conical discharge hood and the conveying sleeve are connected through multiple molding straight pipes. When the clinker flows inside the molding straight pipe, the cooling molding tank can fully cool the molding straight pipe, which facilitates the rapid molding operation of PP material. The material is then discharged and collected through the conical discharge hood.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The present invention fills the interior of the cooling molding tank with a heat-conducting medium, which is then conveyed sequentially through the first conveying pipe, the second conveying pipe, the third conveying pipe, the fourth conveying pipe, and the fifth conveying pipe inside the waste heat recovery hollow base, the heat preservation tank, the preheating tank, the cooling box, and the cooling molding tank. The first drive motor drives the second stirring shaft to rotate in the same direction as the first stirring shaft. The first stirring shaft performs a premixing operation on the PP material through the first stirring frame, and the second stirring shaft fully stirs the molten material through the second stirring frame. Through the mixing and heat-melting separation of the ingredients, the ingredients can be accurately proportioned.

[0021] 2. The second drive motor of this invention drives the rotation of the screw conveyor to push the clinker. The heat-conducting medium inside the heat preservation tank can keep the clinker warm and prevent cooling and solidification from causing blockage inside the conveying sleeve. The preheating tank can preheat the PP material batching, thereby increasing the rate of heat melting of the batching material by the heating jacket. When the clinker flows inside the forming straight tube, the cooling forming tank can fully cool the forming straight tube, thereby facilitating the rapid forming operation of the PP material. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 This is a cross-sectional structural diagram of the transmission box of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the premix tank of the present invention;

[0026] Figure 5 This is a cross-sectional structural diagram of the mixing and injection mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the circulating heat exchange mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the installation structure of the second delivery pipe of the present invention;

[0029] Figure 8 This is a schematic diagram of the installation structure of the fifth delivery pipe of the present invention.

[0030] In the diagram: 1. Display installation mechanism; 101. Housing installation; 102. Display; 103. Sealing cover; 104. Separation partition; 2. Mixing and feeding mechanism; 201. First feeding pipe; 202. Second feeding pipe; 203. Support partition; 204. Transmission box; 205. First transmission motor; 206. First stirring shaft; 207. Premixing tank; 208. Second stirring shaft; 209. Positive mixing tank; 210. First stirring frame; 211. Second stirring frame; 212. Conveying bend; 213. First transmission sprocket; 214. Second transmission sprocket; 21 5. Heating jacket; 3. Material conveying and forming mechanism; 301. Material conveying sleeve; 302. Sealing cover; 303. Second drive motor; 304. Spiral conveyor frame; 305. Forming straight pipe; 306. Conical discharge hood; 4. Circulating heat exchange mechanism; 401. Ventilation plate; 402. Cooling forming tank; 403. Insulation tank; 404. Cooling box; 405. Fan box; 406. Preheating tank; 407. Waste heat recovery hollow seat; 408. First conveying pipe; 409. Second conveying pipe; 410. Third conveying pipe; 411. Fourth conveying pipe; 412. Fifth conveying pipe. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The first drive motor 205 (model YS7134) and the second drive motor 303 (model YEJ3-112M-4) mentioned in this invention can both be obtained from the market or through private customization.

[0033] Please see Figures 1 to 4An embodiment of the present invention provides a PP material preparation apparatus, comprising a display mechanism 1, a mixing and injection mechanism 2, and a circulating heat exchange mechanism 4. The mixing and injection mechanism 2 is installed on the inner side of the upper end of the display mechanism 1, and the material conveying and forming mechanism 3 is installed on the inner side of the bottom end of the display mechanism 1. The mixing and injection mechanism 2 and the material conveying and forming mechanism 3 are connected through the circulating heat exchange mechanism 4. The display mechanism 1 includes a housing 101, a sealing cover plate 103 is fixedly installed on the upper end of the housing 101, a display 102 is fixedly installed on the front end face of the housing 101, and a separation partition 104 is fixedly installed on the inner side of the bottom end of the housing 101. The display 102 can display the parameters of each process in the PP material preparation process.

[0034] Please see Figures 2 to 5 The mixing and injection mechanism 2 includes a support partition 203, which is fixedly connected to the mounting housing 101. A transmission box 204 is fixedly installed on the upper end surface of the support partition 203. A first transmission sprocket 213 is rotatably connected to the inner side of one end of the transmission box 204, and a second transmission sprocket 214 is rotatably connected to the inner side of the other end of the transmission box 204. A first stirring shaft 206 is installed inside the first transmission sprocket 213, and a first stirring frame 210 is fixedly installed at the bottom end of the first stirring shaft 206. A second stirring shaft 208 is installed inside the second transmission sprocket 214, and multiple second stirring frames 211 are fixedly installed at the bottom end of the second stirring shaft 208. The upper end of the second stirring shaft 206 passes through the support partition 203 and the transmission box 204 and is fixedly connected to the first transmission sprocket 213. The upper end of the second stirring shaft 208 passes through the support partition 203, the transmission box 204 and the second transmission sprocket 214 and is connected to the output end of the first transmission motor 205 through a coupling. The second stirring shaft 208 is fixedly connected to the second transmission sprocket 214. A chain is provided between the first transmission sprocket 213 and the second transmission sprocket 214. The first transmission motor 205 drives the first transmission sprocket 213, the second transmission sprocket 214 and the chain through the second stirring shaft 208, thereby realizing the second stirring shaft 208 and the first stirring shaft 206 rotating in the same direction.

[0035] A first drive motor 205 is fixedly installed on the lower end face of the sealing cover plate 103. A premix tank 207 and a mixing tank 209 are fixedly installed on the lower end face of the supporting partition plate 203. A first feeding pipe 201 and a second feeding pipe 202 are installed on the inner side of the upper end of the premix tank 207. A conveying bend 212 is installed at the bottom end of the premix tank 207 and the mixing tank 209. A heating sleeve 215 is fixedly installed on the outer side of the middle part of the conveying bend 212. The bottom ends of the first feeding pipe 201 and the second feeding pipe 202 both pass through the sealing cover plate 103 and the supporting partition plate 203 and are inserted into the inner side of the premix tank 207. The premix tank 207 and the mixing tank 209 are connected through the conveying bend 212. The heating sleeve 215 is equipped with an electric heating resistance wire. The heating sleeve 215 is used to heat melt the mixture.

[0036] Please see Figure 2 The material conveying and forming mechanism 3 includes a material conveying sleeve 301. The bottom end of the mixing tank 209 is connected to the material conveying sleeve 301. The material conveying sleeve 301 is fixedly connected to the mounting shell 101. Multiple forming straight tubes 305 are fixedly installed at one end of the material conveying sleeve 301. A conical discharge hood 306 is installed on the outer side of one end of the multiple forming straight tubes 305. The conical discharge hood 306 is fixedly connected to the mounting shell 101. A sealing cover 302 is fixedly installed at the other end of the material conveying sleeve 301. A second drive motor 303 is fixedly installed on one side of the sealing cover 302. The output end of the second drive motor 303 passes through the sealing cover 302 and is connected to a screw conveyor frame 304 through a coupling. The rotation of the screw conveyor frame 304 can push the clinker and maintain the forming rate.

[0037] Please see Figures 2 to 8 The circulating heat exchange mechanism 4 includes a waste heat recovery hollow seat 407, which is fixedly connected to the heating jacket 215. One end of the waste heat recovery hollow seat 407 is provided with a second conveying pipe 409. A heat preservation tank 403 is installed at the bottom end of the second conveying pipe 409. A material conveying sleeve 301 passes through the heat preservation tank 403 and is connected to multiple forming straight pipes 305. A third conveying pipe 410 is provided on the upper end face of the heat preservation tank 403 on one side of the second conveying pipe 409. A preheating tank 406 is fixedly installed at the upper end of the third conveying pipe 410. The PP material inside the preheating tank 406 can be preheated through the preheating tank 406, thereby increasing the rate of heat melting of the material by the heating jacket 215.

[0038] Cooling boxes 404 are fixedly installed on both sides of the heat preservation tank 403 below the preheating tank 406. A fourth conveying pipe 411 is provided between the cooling box 404 and the preheating tank 406. A vent plate 401 is fixedly installed on one side of the cooling box 404. A fan box 405 is fixedly installed in the middle of the vent plate 401. A cooling forming tank 402 is installed at one end of the heat preservation tank 403. A forming straight pipe 305 passes through the cooling forming tank 402 and is connected to the conical discharge hood 306. A fifth conveying pipe 412 is provided between the cooling forming tank 402 and the two cooling boxes 404. A first conveying pipe 408 is provided between the cooling forming tank 402 and the waste heat recovery hollow seat 407. The cooling forming tank 402 can fully cool the forming straight pipe 305, thereby facilitating the rapid forming operation of PP material.

[0039] The inner side of the cooling molding tank 402 is filled with a heat-conducting medium. The heat-conducting medium is sequentially fed into the interior of the waste heat recovery hollow base 407, the heat preservation tank 403, the preheating tank 406, the cooling box 404 and the cooling molding tank 402 through the first conveying pipe 408, the second conveying pipe 409, the third conveying pipe 410, the fourth conveying pipe 411 and the fifth conveying pipe 412. The cooling molding tank 402 and the waste heat recovery hollow base 407 are connected through the first conveying pipe 408. By circulating the heat-conducting medium, the waste heat generated in the process of preparing PP material can be fully utilized.

[0040] The present invention also provides a process for preparing PP material, applied to the PP material preparation apparatus described above, the PP material preparation process comprising the following steps:

[0041] S1: The interior of the cooling molding tank 402 is filled with a heat-conducting medium, which is then conveyed sequentially through the first conveying pipe 408, the second conveying pipe 409, the third conveying pipe 410, the fourth conveying pipe 411 and the fifth conveying pipe 412 inside the waste heat recovery hollow seat 407, the heat preservation tank 403, the preheating tank 406, the cooling box 404 and the cooling molding tank 402. When the power is turned on, the ingredients for preparing PP material are fed into the inside of the premixing tank 207 through the first feeding pipe 201 and the second feeding pipe 202.

[0042] S2: Start the first drive motor 205. The first drive sprocket 213 and the second drive sprocket 214 are driven by the chain, so that the first drive motor 205 drives the first drive sprocket 213, the second drive sprocket 214 and the chain through the second stirring shaft 208. This enables the second stirring shaft 208 and the first stirring shaft 206 to rotate in the same direction, and the rotation speed of the first stirring shaft 206 is lower than the rotation speed of the second stirring shaft 208. The first stirring shaft 206 performs a premixing operation on the PP material through the first stirring frame 210. After the premixing is completed, the mixture is conveyed through the conveying bend pipe 212.

[0043] S3: A heating sleeve 215 is fixedly installed on the outer side of the middle part of the conveying bend 212, and an electric heating resistance wire is provided inside the heating sleeve 215, so that the mixture conveyed by the conveying bend 212 can be melted into clinker through the heating sleeve 215 and guided to the inner side of the mixing tank 209. At the same time, the waste heat recovery hollow seat 407 can absorb the waste heat of the heating sleeve 215 and convey it to the inside of the heat preservation tank 403 through the second conveying pipe 409. The second stirring shaft 208 fully stirs the clinker through the second stirring frame 211 and then conveys it to the inside of the conveying sleeve 301.

[0044] S4: Start the second drive motor 303, which drives the spiral conveyor frame 304 to rotate under the support of the sealing cover 302, thereby pushing the clinker. The heat-conducting medium inside the heat preservation tank 403 can keep the clinker warm, preventing cooling and solidification from causing blockage inside the conveying sleeve 301. The heat preservation tank 403 and the preheating tank 406 are connected through the third conveying pipe 410. The heat-conducting medium inside the heat preservation tank 403 can be input into the inside of the preheating tank 406 through the third conveying pipe 410 to preheat the PP material in the preheating tank 406, thereby increasing the rate of heat melting of the material by the heating jacket 215.

[0045] S5: The preheating tank 406 inputs the heat transfer medium into the cooling box 404 through the fourth conveying pipe 411. The cooling box 404 is cooled by the fan box 405. Then, the cooling box 404 inputs the heat transfer medium into the cooling molding tank 402 through the fifth conveying pipe 412. The conical discharge hood 306 and the conveying sleeve 301 are connected through multiple molding straight pipes 305. When the clinker flows inside the molding straight pipe 305, the cooling molding tank 402 can fully cool the molding straight pipe 305, which facilitates the rapid molding operation of PP material. The material is then output and collected through the conical discharge hood 306.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PP material preparation apparatus, comprising a display mounting mechanism (1), a mixing and injection mechanism (2), and a circulating heat exchange mechanism (4), characterized in that: A mixing and injection mechanism (2) is installed on the inner side of the upper end of the installation display mechanism (1), and a material conveying and forming mechanism (3) is installed on the inner side of the bottom end of the installation display mechanism (1). The mixing and injection mechanism (2) and the material conveying and forming mechanism (3) are connected through a circulating heat exchange mechanism (4). The installation display mechanism (1) includes an installation shell (101). A sealing cover plate (103) is fixedly installed on the upper end of the installation shell (101). A display (102) is fixedly installed on the front end face of the installation shell (101). A separation partition plate (104) is fixedly installed on the inner side of the bottom end of the installation shell (101). The mixing and injection mechanism (2) includes a support partition (203), which is fixedly connected to the mounting housing (101). A transmission box (204) is fixedly installed on the upper surface of the support partition (203). A first transmission sprocket (213) is rotatably connected to the inner side of one end of the transmission box (204), and a second transmission sprocket (214) is rotatably connected to the inner side of the other end of the transmission box (204). A first stirring shaft (206) is installed on the inner side of the first transmission sprocket (213), and a first stirring frame (210) is fixedly installed at the bottom end of the first stirring shaft (206). A second stirring frame (210) is installed on the inner side of the second transmission sprocket (214). There is a second stirring shaft (208), and multiple second stirring racks (211) are fixedly installed at the bottom end of the second stirring shaft (208). A first drive motor (205) is fixedly installed on the lower end face of the sealing cover plate (103). A premix tank (207) and a normal mixing tank (209) are fixedly installed on the lower end face of the support partition plate (203). A first feeding pipe (201) and a second feeding pipe (202) are installed on the inner side of the upper end of the premix tank (207). A conveying bend (212) is installed at the bottom end of the premix tank (207) and the normal mixing tank (209). A heating sleeve (215) is fixedly installed on the outer side of the middle part of the conveying bend (212). The circulating heat exchange mechanism (4) includes a waste heat recovery hollow seat (407), which is fixedly connected to a heating jacket (215). One end of the waste heat recovery hollow seat (407) is provided with a second conveying pipe (409), and a heat preservation tank (403) is installed at the bottom end of the second conveying pipe (409). A third conveying pipe (410) is provided on the upper end face of the heat preservation tank (403) on one side of the second conveying pipe (409). A preheating tank (406) is fixedly installed at the upper end of the third conveying pipe (410), and the lower part of the preheating tank (406) is located on both sides of the heat preservation tank (403). A cooling box (404) is fixedly installed on each of the cooling boxes (404) and the preheating tank (406). A fourth conveying pipe (411) is provided between the cooling box (404) and the preheating tank (406). A vent plate (401) is fixedly installed on one side of the cooling box (404). A fan box (405) is fixedly installed in the middle of the vent plate (401). A cooling forming tank (402) is installed at one end of the heat preservation tank (403). A fifth conveying pipe (412) is provided between the cooling forming tank (402) and the two cooling boxes (404). A first conveying pipe (408) is provided between the cooling forming tank (402) and the waste heat recovery hollow seat (407).

2. The apparatus for preparing PP material according to claim 1, characterized in that: The material conveying and forming mechanism (3) includes a material conveying sleeve (301), which is fixedly connected to the mounting shell (101). A plurality of forming straight tubes (305) are fixedly installed at one end of the material conveying sleeve (301). A conical discharge hood (306) is installed on the outer side of one end of the plurality of forming straight tubes (305). A sealing cover (302) is fixedly installed at the other end of the material conveying sleeve (301). A second drive motor (303) is fixedly installed on one side of the sealing cover (302). The output end of the second drive motor (303) passes through the sealing cover (302) and is connected to a screw conveyor frame (304) through a coupling.

3. The apparatus for preparing PP material according to claim 1, characterized in that: The upper end of the first stirring shaft (206) passes through the support partition (203) and the transmission box (204) and is fixedly connected to the first transmission sprocket (213). The upper end of the second stirring shaft (208) passes through the support partition (203), the transmission box (204) and the second transmission sprocket (214) and is connected to the output end of the first transmission motor (205) through a coupling. The second stirring shaft (208) is fixedly connected to the second transmission sprocket (214). A chain is provided between the first transmission sprocket (213) and the second transmission sprocket (214).

4. The apparatus for preparing PP material according to claim 1, characterized in that: The bottom ends of the first feeding pipe (201) and the second feeding pipe (202) both pass through the sealing cover plate (103) and the support partition plate (203) and are inserted into the inside of the premix tank (207). The premix tank (207) and the mixing tank (209) are connected through the conveying bend pipe (212). The heating jacket (215) is equipped with an electric heating resistance wire inside.

5. The apparatus for preparing PP material according to claim 2, characterized in that: The bottom end of the positive mixing tank (209) is connected to the conveying sleeve (301). The conveying sleeve (301) passes through the heat preservation tank (403) and is connected to multiple forming straight pipes (305). The conical discharge hood (306) is fixedly connected to the mounting shell (101). The forming straight pipe (305) passes through the cooling forming tank (402) and is connected to the conical discharge hood (306).

6. The apparatus for preparing PP material according to claim 1, characterized in that: The inner side of the cooling molding tank (402) is filled with a heat-conducting medium. The heat-conducting medium is sequentially fed into the interior of the waste heat recovery hollow base (407), the heat preservation tank (403), the preheating tank (406), the cooling box (404), and the cooling molding tank (402) through the first conveying pipe (408), the second conveying pipe (409), the third conveying pipe (410), the fourth conveying pipe (411), and the fifth conveying pipe (412). The cooling molding tank (402) and the waste heat recovery hollow base (407) are connected through the first conveying pipe (408).

7. A preparation process for PP material, characterized in that: The preparation process of the PP material includes the following steps: S1: The interior of the cooling molding tank (402) is filled with a heat-conducting medium, which is then conveyed sequentially through the first conveying pipe (408), the second conveying pipe (409), the third conveying pipe (410), the fourth conveying pipe (411), and the fifth conveying pipe (412) inside the waste heat recovery hollow seat (407), the heat preservation tank (403), the preheating tank (406), the cooling box (404), and the cooling molding tank (402). When the power is turned on, the ingredients for preparing PP material are fed into the inside of the premixing tank (207) through the first feeding pipe (201) and the second feeding pipe (202). S2: Start the first drive motor (205), the first drive sprocket (213) and the second drive sprocket (214) are driven by the chain, so that the first drive motor (205) drives the first drive sprocket (213), the second drive sprocket (214) and the chain through the second stirring shaft (208), thereby realizing that the second stirring shaft (208) and the first stirring shaft (206) rotate in the same direction, and the rotation speed of the first stirring shaft (206) is lower than the rotation speed of the second stirring shaft (208). The first stirring shaft (206) performs premixing operation on the PP material through the first stirring frame (210). After the premixing is completed, the mixture is conveyed through the conveying bend pipe (212). S3: A heating sleeve (215) is fixedly installed on the outer side of the middle part of the conveying bend (212), and the heating sleeve (215) is equipped with an electric heating resistance wire, so that the mixture conveyed by the conveying bend (212) can be melted into clinker through the heating sleeve (215) and guided to the inner side of the mixing tank (209). At the same time, the waste heat of the heating sleeve (215) can be absorbed by the waste heat recovery hollow seat (407) and conveyed to the inside of the heat preservation tank (403) through the second conveying pipe (409). The second stirring shaft (208) fully stirs the clinker through the second stirring frame (211) and then conveys it to the inside of the conveying sleeve (301). S4: Start the second drive motor (303), so that the second drive motor (303) drives the rotation of the screw conveyor (304) under the support of the sealing cover (302) to push the clinker. The heat-conducting medium inside the heat preservation tank (403) can keep the clinker warm and avoid cooling and solidification causing blockage inside the conveying sleeve (301). The heat preservation tank (403) and the preheating tank (406) are connected through the third conveying pipe (410). The heat-conducting medium inside the heat preservation tank (403) can be input into the inside of the preheating tank (406) through the third conveying pipe (410) to realize the preheating tank (406) to preheat the PP material batching and improve the rate of heat melting of the batching by the heating jacket (215). S5: The preheating tank (406) inputs the heat transfer medium into the interior of the cooling box (404) through the fourth conveying pipe (411). The cooling box (404) is cooled by the fan box (405). Then, the cooling box (404) inputs the heat transfer medium into the interior of the cooling molding tank (402) through the fifth conveying pipe (412). The conical discharge hood (306) and the conveying sleeve (301) are connected through multiple molding straight pipes (305). When the clinker flows inside the molding straight pipe (305), the cooling molding tank (402) can fully cool the molding straight pipe (305), which facilitates the rapid molding operation of PP material. The material is then output and collected through the conical discharge hood (306).

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