Polytetrafluoroethylene micro-powder irradiation cracking device

Abstract

The utility model provides a polytetrafluoroethylene micro-powder irradiation cracking device, which comprises a first irradiation box, the first irradiation box comprises a box body, a top cover and a first irradiation source, the top cover is fixed at the upper end of the box body, a feeding port is arranged on the top cover, an irradiation window is arranged at the center of the top cover, the irradiation source is arranged at the upper end of the irradiation window, and the first irradiation source is arranged at the lower end of the box body. The device comprises a first irradiation box, a second irradiation box is arranged below the first irradiation box, a discharging channel is arranged between the first irradiation box and the second irradiation box, the first irradiation box and the second irradiation box are communicated through the discharging channel, and the discharging channel is obliquely arranged. Micro powder is subjected to primary irradiation cracking in the first irradiation box and falls into the second irradiation box through the discharging channel to be subjected to secondary irradiation, continuous cracking and conveying of materials are achieved by arranging the two irradiation boxes and the inclined discharging channel, and the cracking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polytetrafluoroethylene production, in particular to a polytetrafluoroethylene micropowder irradiation cracking device. Background Art

[0002] Known as the "king of plastics," polytetrafluoroethylene (PTFE) ultrafine powder is a low-molecular-weight polytetrafluoroethylene (PTFE) that offers high and low temperature resistance (-50°C to 250°C), corrosion resistance (resistance to strong acids, strong bases, and strong oxidants), excellent electrical insulation, and is non-flammable, non-stick, and has a low coefficient of friction. After irradiation, the PTFE ultrafine powder can be reduced to a particle size below 20μm. It exhibits excellent dispersibility and blends evenly with other materials. It can be used as a modifier for rubber, plastics, paints, inks, coatings, lubricants, greases, and other applications, making it an organic chemical raw material with a wide range of applications.

[0003] Existing Chinese patent document CN201220528814.9 discloses an irradiation cracking device for polytetrafluoroethylene (PTFE) micropowder, comprising an irradiation mechanism, a conveying mechanism, and a negative pressure mechanism. The irradiation mechanism comprises a housing with a sealed cavity and an irradiating element, wherein a first notch is formed in the upper surface of the housing, and a high-energy electron beam generated by the irradiating element irradiates the PTFE micropowder; the housing comprises an air inlet and an air outlet; the conveying mechanism comprises a conveying element and a cover, wherein a second notch is formed in the cover below the irradiating element; and the negative pressure mechanism comprises a flow valve and a pump body, wherein the flow valve is connected to the air inlet, and the pump body is capable of maintaining a negative pressure in the sealed cavity through the air outlet. This utility model has at least the following advantages: the use of the cover structure in conjunction with the negative pressure design within the irradiation cavity enables uniform and stable airflow into the irradiation cavity, thereby minimizing the impact on the PTFE micropowder.

[0004] However, the above patent has certain defects when used. The device only irradiates polytetrafluoroethylene powder on one side. When the irradiation time is too short, the effect will be poor. Therefore, the irradiation time needs to be extended, which greatly reduces the work efficiency, and the single-sided irradiation is not uniform enough.

[0005] Therefore, a polytetrafluoroethylene micropowder irradiation cracking device is proposed to solve the above-mentioned problems. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a polytetrafluoroethylene micropowder irradiation cracking device.

[0007] The utility model is implemented by the following technical solutions:

[0008] A polytetrafluoroethylene powder irradiation cracking device comprises a first irradiation box, the first irradiation box comprises a box body, a top cover and a first irradiation source, the top cover is fixed to the upper end of the box body, the top cover is provided with a feeding port, the center of the top cover is provided with an irradiation window, the irradiation source is arranged at the upper end of the irradiation window, a second irradiation box is provided below the first irradiation box, four support columns are provided at the bottom of the first irradiation box, one end of the support column is fixed to the four sides of the first irradiation box, and the other end is fixed to the upper surface of the second irradiation box, a material discharge channel is provided between the first irradiation box and the second irradiation box, the material discharge channel respectively connects the first irradiation box with the second irradiation box, and the material discharge channel is arranged obliquely;

[0009] The second irradiation box includes a box body, a second irradiation source and a top cover. The top cover is fixed to the upper end of the box body. An irradiation window is provided in the center of the top cover. The second irradiation source is arranged at the upper end of the irradiation window. Four supporting legs are provided at the bottom of the second irradiation box, which are fixed to the bottom of the box body. A drop opening is provided at the bottom left side of the second irradiation box.

[0010] A conveying device is respectively provided inside the first irradiation box and the second irradiation box, and the conveying device includes a driving wheel, a driven wheel, a conveyor belt and a motor. The driving wheel and the driven wheel are respectively arranged inside the box body, and the conveyor belt connects the driving wheel and the driven wheel. The motor is fixed on the front side of the box body, and the output end of the motor is fixedly connected to one end of the driving wheel.

[0011] An upper scraper is provided on the lower surface of the top cover of the first irradiation box. The top of the upper scraper is fixedly connected to the top cover. A gap is left between the lower end of the upper scraper and the conveyor belt. The width of the upper scraper is consistent with the width of the conveyor belt.

[0012] A lower scraper is provided inside the box body of the first irradiation box. The lower scraper is arranged on the right side of the box body and is fixedly connected thereto. The upper end of the lower scraper is in contact with the conveyor belt, and a material blocking platform is provided on the right side of the lower scraper.

[0013] The feeding port is provided with a feeding device, and the feeding device comprises a feeding hopper, a sealing cover is provided on the top of the feeding hopper, and an inclined plate is provided on the bottom of the feeding hopper.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting up the first irradiation box and the second irradiation box, the micro powder undergoes initial irradiation cracking in the first irradiation box and falls into the second irradiation box through the discharge channel for secondary irradiation. By setting up two irradiation boxes and the inclined discharge channel, continuous cracking and transportation of materials are achieved, thereby improving cracking efficiency;

[0016] 2. A conveying device is set inside the irradiation box. The use of the conveying device ensures the uniform distribution of materials during the irradiation process, avoiding the problems of material accumulation and uneven cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a front structural diagram of the utility model;

[0019] Figure 3 This is an exploded schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional explosion structure of the first irradiation box of the utility model;

[0021] In the figure: 1. First irradiation box; 11. Support column; 12. Box body; 13. Motor; 14. Conveyor belt; 15. Top cover; 16. Driving wheel; 17. Driven wheel; 2. Feeding device; 21. Sealing cover; 22. Feeding hopper; 23. Inclined plate; 3. First irradiation source; 4. Second irradiation source; 5. Second irradiation box; 51. Dropping port; 6. Support legs; 7. Dropping channel; 8. Upper scraper; 81. Lower scraper; 82. Material blocking platform. DETAILED DESCRIPTION

[0022] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 4As shown, a polytetrafluoroethylene powder irradiation cracking device includes a first irradiation box 1, which includes a box body 12, a top cover 15 and a first irradiation source 3. As the main container for irradiation cracking, the box body 12 needs to withstand the radiation generated by the irradiation source while maintaining the stability of the internal environment. It is usually made of radiation-resistant materials, such as stainless steel or special alloys, to ensure that it will not deform or produce harmful substances under long-term irradiation. The top cover 15 is fixed to the upper end of the box body 12. The top cover 15 is fixed to the upper end of the box body 12 and is used to close the box body 12 to prevent radiation leakage during the irradiation process. A feeding port is provided on the top cover 15, which is connected to the inside of the box body 12. The feeding port provided on the top cover 15 is used to add polytetrafluoroethylene. Ethylene powder, an irradiation window is provided at the center of the top cover 15, and the irradiation source is arranged at the upper end of the irradiation window for performing initial irradiation cracking on the material. A second irradiation box 5 is provided below the first irradiation box 1, and four support columns 11 are provided at the bottom of the first irradiation box 1. One end of the support column 11 is fixed on the four sides of the first irradiation box 1, and the other end is fixed on the upper surface of the second irradiation box 5. A feeding channel 7 is provided between the first irradiation box 1 and the second irradiation box 5, and the feeding channel 7 connects the first irradiation box 1 with the second irradiation box 5 respectively. The feeding channel 7 is arranged at an angle, and the feeding channel 7 is a shell with openings at both ends and a hollow interior, which is used to smoothly transport the material after the initial irradiation cracking to the second irradiation box 5.

[0025] The second irradiation box 5 includes a box body 12, a second irradiation source 4 and a top cover 15. The top cover 15 is fixed to the upper end of the box body 12. An irradiation window is provided in the center of the top cover 15. The second irradiation source 4 is arranged at the upper end of the irradiation window. The second irradiation source 4 is used to further crack the material that has undergone initial irradiation cracking. The bottom of the second irradiation box 5 is provided with four supporting legs, which are fixed to the bottom of the box body 12. The bottom left side of the second irradiation box 5 is provided with a drop opening 51.

[0026] The first irradiation box 1 and the second irradiation box 5 are respectively provided with a conveying device, and the conveying device includes a driving wheel 16, a driven wheel 17, a conveyor belt 14 and a motor 13. The driving wheel 16 and the driven wheel 17 are respectively arranged inside the box body 12. The conveyor belt 14 connects the driving wheel 16 and the driven wheel 17. The motor 13 is fixed to the front of the box body 12, and the output end of the motor 13 is fixedly connected to one end of the driving wheel 16. The motor 13 drives the driving wheel 16 to rotate, and the driving wheel 16 and the conveyor belt 14 on the driven wheel 17 rotate together under the action of friction, thereby realizing continuous transportation of materials. The running directions of the motors 13 on the first irradiation box 1 and the second irradiation box 5 are opposite. The motor 13 of the first irradiation box 1 drives the conveyor belt 14 to move from left to right, while the motor 13 of the second irradiation box 5 drives the conveyor belt 14 to move from right to left.

[0027] An upper scraper 8 is provided on the lower surface of the top cover 15 of the first irradiation box 1. The top of the upper scraper 8 is fixedly connected to the top cover 15. A gap is left between the lower end of the upper scraper 8 and the conveyor belt 14. The width of the upper scraper 8 is consistent with the width of the conveyor belt 14. The upper scraper 8 is provided with an arc-shaped end and is made of wear-resistant silicone to prevent damage to the conveyor belt 14. The gap between the upper scraper 8 and the conveyor belt 14 can be used to prevent material from accumulating at the beginning of the conveyor belt 14, and to evenly scrape and spread the material on the conveyor belt 14.

[0028] A lower scraper 81 is provided inside the housing 12 of the first irradiation box 1. The lower scraper 81 is arranged on the right side of the housing 12 and is fixedly connected thereto. The upper end of the lower scraper 81 contacts the conveyor belt 14, and a material retaining platform 82 is provided on the right side of the lower scraper 81. Since the lower scraper 81 contacts the conveyor belt 14, it can be used to scrape off materials attached to the conveyor belt 14 to prevent accumulation of materials during the conveyance process. The material retaining platform 82 is an inclined ramp used to scrape the fine powder from the conveyor belt 14 and accurately deposit it into the discharge channel 7.

[0029] The feeding port is provided with a feeding device 2, which includes a feeding hopper 22, a cover 21 on the top of the feeding hopper 22, and an inclined plate 23 on the bottom of the feeding hopper 22. The inclined plate 23 is provided to facilitate the smooth falling of materials into the first irradiation box 1 and ensure that the materials are evenly distributed on the conveyor belt 14 to avoid local accumulation.

[0030] The principle of use of the present invention is as follows: when in use, the polytetrafluoroethylene powder to be cracked is placed into the feeding hopper 22 of the feeding device 2, and the cover 21 of the feeding hopper 22 is ensured to be closed to prevent radiation leakage during the irradiation process;

[0031] Check and start key components such as the conveyor device and irradiation source to ensure their normal operation. The motor 13 drives the driving wheel 16 to rotate, thereby driving the conveyor belt 14 to move. The material on the conveyor belt 14 enters the first irradiation box 1 as the conveyor belt 14 moves;

[0032] The radiation source in the first irradiation box 1 irradiates and cracks the material, breaking the polytetrafluoroethylene molecular chain. The cracked material enters the second irradiation box 5 through the discharge channel 7. The radiation source in the second irradiation box 5 further cracks the material to achieve the desired cracking degree.

[0033] The cracked material is discharged through the discharge port 51 on the left side of the second irradiation box 5, and the discharged material is collected for subsequent processing or analysis.

[0034] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A polytetrafluoroethylene powder irradiation cracking device, comprising a first irradiation box, the first irradiation box comprising a box body, a top cover, and a first irradiation source, the top cover being fixed to the upper end of the box body, the top cover being provided with a feeding port, the top cover being provided with an irradiation window at the center thereof, the irradiation source being disposed above the irradiation window, and characterized in that: A second irradiation box is provided below the first irradiation box, and four support columns are provided at the bottom of the first irradiation box, one end of the support column is fixed to the four sides of the first irradiation box, and the other end is fixed to the upper surface of the second irradiation box. A material discharge channel is provided between the first irradiation box and the second irradiation box, and the material discharge channel connects the first irradiation box and the second irradiation box respectively, and the material discharge channel is arranged obliquely; The second irradiation box includes a box body, a second irradiation source and a top cover. The top cover is fixed to the upper end of the box body. An irradiation window is provided in the center of the top cover. The second irradiation source is arranged at the upper end of the irradiation window. Four supporting legs are provided at the bottom of the second irradiation box, which are fixed to the bottom of the box body. A drop opening is provided at the bottom left side of the second irradiation box.

2. The polytetrafluoroethylene powder irradiation cracking device according to claim 1, characterized in that: A conveying device is respectively provided inside the first irradiation box and the second irradiation box, and the conveying device includes a driving wheel, a driven wheel, a conveyor belt and a motor. The driving wheel and the driven wheel are respectively arranged inside the box body, and the conveyor belt connects the driving wheel and the driven wheel. The motor is fixed on the front side of the box body, and the output end of the motor is fixedly connected to one end of the driving wheel.

3. The polytetrafluoroethylene powder irradiation cracking device according to claim 2, characterized in that: An upper scraper is provided on the lower surface of the top cover of the first irradiation box. The top of the upper scraper is fixedly connected to the top cover. A gap is left between the lower end of the upper scraper and the conveyor belt. The width of the upper scraper is consistent with the width of the conveyor belt.

4. The polytetrafluoroethylene powder irradiation cracking device according to claim 3, characterized in that: A lower scraper is provided inside the box body of the first irradiation box. The lower scraper is arranged on the right side of the box body and is fixedly connected thereto. The upper end of the lower scraper is in contact with the conveyor belt, and a material blocking platform is provided on the right side of the lower scraper.

5. The polytetrafluoroethylene powder irradiation cracking device according to claim 4, characterized in that: The feeding port is provided with a feeding device, and the feeding device comprises a feeding hopper, a sealing cover is provided on the top of the feeding hopper, and an inclined plate is provided on the bottom of the feeding hopper.

Images