Drying equipment for polytetrafluoroethylene hose production

Abstract

The utility model provides drying equipment for polytetrafluoroethylene hose production, which belongs to the technical field of drying equipment and is characterized in that a stirring component, an intelligent controller and a feed port are mounted in an accessory box on the equipment, and the intelligent controller and the feed port are respectively positioned on two sides of the stirring component; the lower accessory box frame comprises an upper supporting plate and a lower supporting plate, an air blower is fixedly arranged on one side of the upper supporting plate and communicates with the purification assembly, and the purification assembly communicates with the heating assembly; a recycling box is fixedly arranged in the center of the lower supporting plate, a material collecting box is arranged on one side of the recycling box, and a material conveying pipe is arranged on the material collecting box. The material conveying pipe is connected with the side wall of the material inlet, and the material conveying pipe is connected with a material conveying pump; and a temperature sensor is fixedly arranged above the inner wall of the drying box body. The problems that raw material particles to be dried are prone to caking and the drying efficiency is low in the existing polytetrafluoroethylene hose production process are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment, and particularly relates to a drying equipment for the production of polytetrafluoroethylene hoses. Background Technique

[0002] A polytetrafluoroethylene hose is a hose made of polytetrafluoroethylene (abbreviated as PTFE) material. This hose is widely used in fluid transmission systems in various industries such as chemical plants, laboratory equipment, semiconductor manufacturing, and food processing due to its excellent chemical stability and high temperature resistance.

[0003] In the process of producing PTFE hoses, it is necessary to appropriately pre-treat PTFE raw materials (usually resin particles or powders). Among them, the drying process is one of the key steps, aiming to remove the moisture in the raw materials and prevent bubbles from being generated during the subsequent melt extrusion process, so as to ensure that the physical properties of the final product meet the requirements. The traditional drying method is to use high-temperature air flow to pass through the particles in the drying furnace to evaporate the moisture in them. However, this method has some problems: the particles are prone to agglomerate and form lumps, resulting in low drying efficiency, and there may be a situation where some raw materials are not fully dried, affecting the product quality.

[0004] Therefore, in the process of producing polytetrafluoroethylene hoses, there is an urgent need to develop a drying equipment with high drying efficiency and no agglomeration of particles during the drying process. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a drying equipment for the production of polytetrafluoroethylene hoses, effectively solving the problems of easy agglomeration of particles to be dried and low drying efficiency in the current production process of polytetrafluoroethylene hoses.

[0006] The technical solution provided by the utility model is as follows:

[0007] A drying device for the production of polytetrafluoroethylene hoses, including an upper fitting box body, a drying box body is fixedly connected to the bottom of the upper fitting box body, a lower fitting box body frame is fixedly connected to the bottom of the drying box body, and the upper fitting box body, the drying box body and the lower fitting box body frame are all set as cylindrical structures; a stirring component is fixedly installed at the center of the upper fitting box body, and an intelligent controller and a feed inlet are also fixedly arranged in the upper fitting box body, and the intelligent controller and the feed inlet are respectively located on both sides of the stirring component; the lower fitting box body frame includes an upper support plate and a lower support plate, and support columns are fixedly arranged between the upper support plate and the lower support plate; a blower is fixedly arranged on one side of the upper surface of the upper support plate, the blower is communicated with a purification component through a first air outlet pipe, the purification component is communicated with a heating component through a second air outlet pipe, and the heating component, the purification component and the blower are respectively located on one side of the outer side of the drying box body in the order from top to bottom; a recovery box is fixedly arranged at the center of the upper surface of the lower support plate, an aggregate box is arranged on one side of the recovery box, and a conveying pipe is arranged on the aggregate box; the conveying pipe is connected to the side wall of the feed inlet, and a conveying pump is connected to the conveying pipe, and the conveying pump is fixedly arranged on the other side of the upper surface of the upper support plate and is located on the other side of the outer side of the drying box body; a temperature sensor is fixedly arranged above the inner wall of the drying box body, an inclined plate is fixedly arranged along the periphery of the inner wall of the bottom of the drying box body, a discharge pipe is arranged at the center of the inclined plate, and the discharge pipe penetrates through the upper support plate and is communicated with the recovery box.

[0008] Preferably, the temperature sensor is connected to the input end of the intelligent controller through a signal wire, and the output end of the intelligent controller is connected to the heating component through an electric wire.

[0009] Preferably, a heat insulation plate is arranged in the heating component, and a heating resistance wire is arranged on one side of the heat insulation plate.

[0010] Preferably, an air supply pipe is arranged above the heating component, and the air supply pipe penetrates through the outer side wall of the drying box body and is fixedly arranged on the top of the drying box body.

[0011] Preferably, the air supply pipe and the feed inlet and the stirring component are arranged in a staggered manner, and an air outlet is arranged on the lower surface of the air supply pipe.

[0012] Preferably, the purification component includes a first filter layer, an activated carbon filter layer and a second filter layer; both the first filter layer and the second filter layer are HEPA filters (high-efficiency particulate air filters), and the first filter layer and the second filter layer are respectively located on both sides of the activated carbon filter layer.

[0013] Preferably, the stirring component includes a motor, the output end of the motor is connected to a rotating shaft, the rotating shaft penetrates through the upper fitting box body and extends into the drying box body, a first stirring blade is fixedly installed on the upper part of the rotating shaft, and a second stirring blade is fixedly installed on the lower part of the rotating shaft.

[0014] Preferably, a circular through hole is provided on the first stirring blade, and the shape of the second stirring blade is adapted to that of the inclined plate.

[0015] Preferably, an inclined vibrating screen is arranged inside the recovery box, and the horizontal included angle between the vibrating screen and the bottom of the recovery box is 15°; a first discharge port is arranged on one side wall of the recovery box along the length direction of the vibrating screen, and the first discharge port is communicated with the aggregate box; a second discharge port is arranged at the lower part of the other side wall of the recovery box, and a switching valve is arranged on the second discharge port.

[0016] Preferably, 4 universal wheels are installed at the bottom of the lower support plate, and the universal wheels are symmetrically distributed at four equal points on the circumference of the bottom of the lower support plate.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The utility model provides an integrated hot air drying system, which combines a blower, a purification component and a heating component together and can generate clean and temperature-controllable hot air. Specifically as follows: Connect the blower, the heating component and the intelligent controller to appropriate power supplies respectively. Through the blower, a continuous air flow is generated, and the purification component purifies the air to remove impurities such as particulate matters and harmful gases in the air. The purified air enters the heating component, and the current passes through the heating resistance wire to make it heat up and heat the air around it. The heated air (i.e., hot air) enters the drying box body through the air outlet in the air supply pipe to heat the materials in the drying box body; In order to ensure the temperature stability during the drying process, a temperature sensor is installed in the drying box body. The sensor is connected to the intelligent controller, monitors the air temperature in the box body in real time, and feeds back the data to the intelligent controller. The intelligent controller automatically adjusts the power of the heating resistance wire according to the received information: when it detects that the temperature is lower than the preset value, the controller will increase the current of the resistance wire to raise the temperature; on the contrary, if the temperature is too high, the current will be reduced to lower the temperature, so as to ensure that the output temperature of the hot air is maintained within a stable range.

[0019] (2) The present utility model is also provided with a set of stirring components, including a motor, a rotating shaft, and stirring blades. The stirring blades in the upper part are designed with through holes, which helps to better disperse the raw materials. The shape of the stirring blades in the lower part matches the bottom of the drying box body, ensuring that the raw materials at the bottom of the box can also be effectively stirred. This design ensures that all the raw materials in the box body can be fully stirred and dispersed, avoiding the problem that the raw material particles are prone to aggregation and caking during the drying process. In addition, the present utility model is also provided with a recovery box at the bottom of the drying box body. A vibrating screen is arranged inside the recovery box. When the dried raw materials flow into the recovery box from the discharge port, they will be screened under the action of the vibrating screen. The fully dried materials, due to their smaller particle size, will pass through the vibrating screen and fall to the bottom of the recovery box, and will be collected and stored through the second discharge port; while those raw materials that are not fully dried will be screened out and flow into the aggregate box through the first discharge port. These raw materials will then be sent back into the drying box body for secondary drying under the action of a feeding pump through a feeding pipe, realizing the effective separation of the raw materials in the drying box body, significantly improving the drying efficiency and quality, and ensuring the stability of the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of a drying device for producing polytetrafluoroethylene hoses according to the present utility model;

[0021] Figure 2 is the structural schematic diagram of the stirring components of a drying device for producing polytetrafluoroethylene hoses according to the present utility model;

[0022] Figure 3 is the structural schematic diagram of the purification components of a drying device for producing polytetrafluoroethylene hoses according to the present utility model;

[0023] Figure 4 is the structural schematic diagram of the heating components of a drying device for producing polytetrafluoroethylene hoses according to the present utility model;

[0024] Figure 5 is the structural schematic diagram of the recovery box of a drying device for producing polytetrafluoroethylene hoses according to the present utility model.

[0025] In the figure: 1 upper fitting box body, 11 stirring assembly, 111 motor, 112 rotating shaft, 113 first stirring blade, 114 second stirring blade, 115 through hole, 12 feed inlet, 13 intelligent controller, 2 drying box body, 21 temperature sensor, 22 inclined plate, 23 discharge pipe, 3 lower fitting box body frame, 31 recycling box, 311 vibrating screen, 312 second discharge port, 313 switching valve, 314 first discharge port, 32 aggregate box, 33 conveying pipe, 34 upper support plate, 35 support column, 36 lower support plate, 4 blower, 41 first air outlet pipe, 5 purification assembly, 51 first filter layer, 52 activated carbon filter layer, 53 second filter layer, 54 second air outlet pipe, 6 heating assembly, 61 gas supply pipe, 62 air outlet, 63 heat insulation plate, 64 heating resistance wire, 7 conveying pump. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides a drying device for the production of polytetrafluoroethylene hoses. The technical solutions of the present invention will be further described below with reference to the accompanying drawings:

[0028] Refer to Figure 1It can be known that a drying device for producing polytetrafluoroethylene hoses includes an upper fitting box body 1. A drying box body 2 for drying raw materials is fixedly connected to the bottom of the upper fitting box body 1. A lower fitting box body frame 3 is fixedly connected to the bottom of the drying box body 2. The upper fitting box body 1, the drying box body 2, and the lower fitting box body frame 3 are all cylindrical structures. A stirring assembly 11 for stirring and dispersing raw materials is fixedly installed at the center of the upper fitting box body 1. An intelligent controller 13 and a feed inlet 12 are also fixedly arranged in the upper fitting box body 1. The intelligent controller 13 and the feed inlet 12 are respectively located on both sides of the stirring assembly 11. The lower fitting box body frame 3 includes an upper support plate 34 and a lower support plate 36. Support columns 35 are fixedly arranged between the upper support plate 34 and the lower support plate 36. A blower 4 capable of continuously providing an air flow is fixedly arranged on one side of the upper surface of the upper support plate 34. Air flows into a purification assembly 5 from a first air outlet pipe 41 of the blower 4. After the purification assembly 5 purifies the air to remove impurities such as particulate matter and harmful gases in the air, it then enters a heating assembly 6 through a second air outlet pipe 54. Among them, the above-mentioned heating assembly 6, purification assembly 5, and blower 4 are respectively located on one side of the outer side surface of the drying box body 2 in the order from top to bottom. A recovery box 31 for collecting raw materials is fixedly arranged at the center of the upper surface of the lower support plate 36. An aggregate box 32 for collecting inadequately dried raw materials is arranged on one side of the recovery box 31. A conveying pipe 33 is arranged on the aggregate box 32. The conveying pipe 33 is connected to the side wall of the feed inlet 12, and a feed pump 7 is connected to the conveying pipe 33. The feed pump 7 can re-feed the inadequately dried raw materials in the aggregate box 32 into the drying box body 2 through the conveying pipe 33 from the feed inlet 12 for continuous drying. The feed pump 7 is fixedly arranged on the other side of the upper surface of the upper support plate 34 and is located on the other side of the outer side surface of the drying box body 2. A temperature sensor 21 is fixedly arranged above the inner wall of the drying box body 2. An inclined plate 22 for facilitating the collection of raw materials is fixedly arranged along the periphery of the inner wall of the bottom of the drying box body 2. A discharge pipe 23 is arranged at the center of the inclined plate 22. The discharge pipe 23 penetrates through the upper support plate 34 and is communicated with the recovery box 31. Among them, 4 universal wheels 8 are installed at the bottom of the lower support plate 36. The universal wheels 8 are symmetrically distributed at four equally divided points on the circumference of the bottom of the lower support plate 36.

[0029] In the above embodiment, the temperature sensor 21 is connected to the input end of the intelligent controller 13 through a signal line, and the output end of the intelligent controller 13 is connected to the heating assembly 6 through an electric wire. A temperature sensor 21 is installed in the drying box body 2 to ensure the stability of the temperature during the drying process, and the temperature in the drying box body 2 can be monitored in real time, so as to ensure that the temperature in the drying box body 2 is maintained within a relatively stable temperature range. In addition, the intelligent controller can also be connected to an external control panel (not shown in the figure), allowing the user to directly set the required temperature on the panel to achieve more convenient operation.

[0030] Refer to Figure 1 andFigure 4 It can be seen that in the above embodiment, a heat insulation board 63 for preventing heat loss is provided in the heating component 6, a heating resistor wire 64 is provided on one side of the heat insulation board 63, and an air supply pipe 61 for conveying hot air is provided above the heating component 6. The air supply pipe 61 passes through the outer wall of the drying box 2 and is fixedly arranged on the top of the drying box 2, and is staggered with the feed port 12 and the stirring component 11. An air outlet 62 for flowing out hot air is also provided on the lower surface of the air supply pipe 61.

[0031] See also Figure 1 and Figure 2 It can be seen that in the above embodiment, the stirring component 11 includes a motor 111, and the output end of the motor 111 is connected to a rotating shaft 112, the rotating shaft 112 passes through the upper accessory box 1 and extends to the interior of the drying box 2, a first stirring blade 113 is fixedly installed on the upper part of the rotating shaft 112, and a second stirring blade 114 is fixedly installed on the lower part of the rotating shaft 112; the first stirring blade 113 is provided with a circular through hole 115 for evenly dispersing the raw materials, and the shape of the second stirring blade 114 is adapted to the inclined plate 22, so that the raw materials at the bottom of the drying box 2 can be fully dispersed while being dried.

[0032] See also Figure 1 and Figure 3 It can be seen that in the above embodiment, the purification component 5 includes a first filter layer 51, an activated carbon filter layer 52 and a second filter layer 53; the first filter layer 51 and the second filter layer 53 are both HEPA filters, and the first filter layer 51 and the second filter layer 53 are respectively located on both sides of the activated carbon filter layer 52; the above-mentioned first layer of HEPA filter 51 is used to remove most of the particulate matter in the air flow, and after the harmful gases and odors are removed by the activated carbon filter layer 52, the air quality is further improved by the second layer of HEPA filter 53, ensuring that the air entering the heating component is both clean and harmless, thereby improving the air quality during the raw material drying process, and helping to improve the drying quality and efficiency of the raw materials.

[0033] See also Figure 1 and Figure 5 It can be seen that in the above embodiment, an inclined vibrating screen 311 is arranged inside the recycling box 31, and the horizontal angle between the vibrating screen 311 and the bottom of the recycling box 31 is 15°; a first discharge port 314 is arranged on one side wall of the recycling box 31 along the length direction of the vibrating screen 311, so that the raw materials that are not dried sufficiently can flow into the collecting box 32 through the first discharge port 314, and the first discharge port 314 is connected to the collecting box 32; a second discharge port 312 for collecting the sufficiently dried raw materials is arranged at the lower part of the other side wall of the recycling box 31, and a switch valve 313 is arranged on the second discharge port 312.

[0034] Working principle of the utility model: During use, the raw materials for producing polytetrafluoroethylene hoses are put into the drying box body 2 through the feed inlet 12. Start the motor 111, and the motor 111 drives the rotating shaft 112 to rotate, and then drives the first stirring blade 113 and the second stirring blade 114 located on the rotating shaft 112 to rotate, so as to stir and disperse the raw materials in the drying box body 2. At the same time, start the blower 4 and the heating component 6 to work. The air generated by the blower 4 flows through the first air outlet pipe 41 through the purification component 5, and passes through the first filter layer 51, the activated carbon filter layer 52 and the second filter layer 53 to remove impurities such as particulate matter and harmful gases in the air flow. The purified air enters the heating component 6, and the air is heated into hot air by the heating resistance wire 64. The hot air enters the drying box body 2 through the air outlet 62 on the air supply pipe 61 to heat the raw materials in the drying box body 2. And a temperature sensor 21 is installed in the drying box body 2, which is connected to the intelligent controller 13, monitors the air temperature in the box body in real time, and feeds back the data to the intelligent controller 13. The intelligent controller 13 automatically adjusts the power of the heating resistance wire 64 according to the received information, so that the temperature in the drying box body 2 is within a constant temperature range. After the raw materials are dried, open the control valve on the discharge pipe 23, so that the raw materials in the drying box body 2 flow into the recycling box 31. At this time, start the vibrating screen 311 in the recycling box 31. The completely dried and qualified raw materials will pass through the vibrating screen 311, fall to the bottom of the recycling box 31, and are collected through the second discharge port 312 for subsequent use. The raw materials that are not dried up flow into the aggregate box 32 through the first discharge port 314. Under the action of the feeding pump 7, these unqualified raw materials are sent back to the drying box body 2 through the feeding pipe 33 for re-drying until they reach the standard. The qualified raw materials will eventually be collected through the second discharge port 312 for subsequent production.

[0035] The above has introduced in detail a drying device for producing polytetrafluoroethylene hoses provided by the utility model. The above embodiments are only used to illustrate the technical solutions of the utility model rather than to limit them. Those skilled in the art should understand that the technical solutions of the utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the utility model, and all should be covered by the scope of the claims of the utility model.

Claims

1. A drying device for producing polytetrafluoroethylene hoses, comprising an upper accessory box (1), characterized in that: The bottom of the upper accessory box (1) is fixedly connected to a drying box (2), and the bottom of the drying box (2) is fixedly connected to a lower accessory box frame (3), and the upper accessory box (1), the drying box (2) and the lower accessory box frame (3) are all cylindrical structures; a stirring assembly (11) is fixedly installed at the center of the upper accessory box (1), and an intelligent controller (13) and a feed port (12) are also fixedly arranged in the upper accessory box (1), and the intelligent controller (13) and the feed port (12) are The ports (12) are respectively located on both sides of the stirring assembly (11); the lower accessory box frame (3) comprises an upper support plate (34) and a lower support plate (36), and a support column (35) is fixedly arranged between the upper support plate (34) and the lower support plate (36); a blower (4) is fixedly arranged on one side of the upper surface of the upper support plate (34), and the blower (4) is connected to the purification assembly (5) through a first air outlet pipe (41), and the purification assembly (5) is connected to the heating element (5) through a second air outlet pipe (54). The lower support plate (36) is connected to the drying box body (2), the heating component (6), the purification component (5) and the blower (4) are respectively located on one side of the outer side of the drying box body (2) in order from top to bottom; a recovery box (31) is fixedly arranged at the center of the upper surface of the lower support plate (36), a collection box (32) is arranged on one side of the recovery box (31), and a feed pipe (33) is arranged on the collection box (32); the feed pipe (33) is connected to the side wall of the feed inlet (12), and the feed pipe (33) is connected to the side wall of the feed inlet (12). A feed pump (7) is provided, and the feed pump (7) is fixedly arranged on the other side of the upper surface of the upper support plate (34) and located on the other side of the outer side of the drying box body (2); a temperature sensor (21) is fixedly arranged above the inner wall of the drying box body (2), and an inclined plate (22) is fixedly arranged along the periphery of the inner wall at the bottom of the drying box body (2), and a discharge pipe (23) is arranged at the center of the inclined plate (22), and the discharge pipe (23) passes through the upper support plate (34) and is connected to the recovery box (31).

2. A drying device for producing polytetrafluoroethylene hose according to claim 1, characterized in that: The temperature sensor (21) is connected to the input end of the intelligent controller (13) via a signal line, and the output end of the intelligent controller (13) is connected to the heating component (6) via an electrical conductor.

3. A drying device for producing polytetrafluoroethylene hose according to claim 2, characterized in that: A heat insulation board (63) is provided inside the heating component (6), and a heating resistance wire (64) is provided on one side of the heat insulation board (63).

4. A drying device for producing polytetrafluoroethylene hose according to claim 3, characterized in that: An air supply pipe (61) is provided on one side of the heating component (6); the air supply pipe (61) passes through the outer wall of the drying box (2) and is fixedly arranged on the top of the drying box (2).

5. A drying device for producing polytetrafluoroethylene hose according to claim 4, characterized in that: The air supply pipe (61) is arranged alternately with the feed port (12) and the stirring assembly (11), and an air outlet (62) is arranged on the lower surface of the air supply pipe (61).

6. The drying equipment for producing polytetrafluoroethylene hose according to claim 1, characterized in that: The purification component (5) comprises a first filter layer (51), an activated carbon filter layer (52) and a second filter layer (53); the first filter layer (51) and the second filter layer (53) are both HEPA filters, and the first filter layer (51) and the second filter layer (53) are respectively located on both sides of the activated carbon filter layer (52).

7. The drying equipment for producing polytetrafluoroethylene hose according to claim 1, characterized in that: The stirring assembly (11) comprises a motor (111), the output end of the motor (111) is connected to a rotating shaft (112), the rotating shaft (112) passes through the upper accessory box (1) and extends to the interior of the drying box (2), a first stirring blade (113) is fixedly mounted on the upper portion of the rotating shaft (112), and a second stirring blade (114) is fixedly mounted on the lower portion of the rotating shaft (112).

8. The drying equipment for producing polytetrafluoroethylene hose according to claim 7, characterized in that: The first stirring blade (113) is provided with a circular through hole (115), and the shape of the second stirring blade (114) is adapted to the inclined plate (22).

9. The drying equipment for producing polytetrafluoroethylene hose according to claim 1, characterized in that: An inclined vibrating screen (311) is arranged inside the recovery box (31), and the horizontal angle between the vibrating screen (311) and the bottom of the recovery box (31) is 15°; a first discharge port (314) is arranged on one side wall of the recovery box (31) along the length direction of the vibrating screen (311), and the first discharge port (314) is connected to the collection box (32); a second discharge port (312) is arranged on the lower part of the other side wall of the recovery box (31), and a switch valve (313) is arranged on the second discharge port (312).

10. The drying equipment for producing polytetrafluoroethylene hose according to claim 1, characterized in that: Four universal wheels (8) are installed at the bottom of the lower support plate (36), and the universal wheels (8) are respectively located at four equally divided points on the circumference of the bottom of the lower support plate (36) and are symmetrically distributed.

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