Openable and closable three-way device capable of preventing and blocking materials and using method thereof

Abstract

The invention discloses an anti-freezing and anti-blocking switchable three-way device and a using method thereof, and relates to the field of tee joints, the key points of the technical scheme are that the anti-freezing and anti-blocking switchable three-way device comprises a three-way pipe body, the cross section of the three-way pipe body is square, and therefore a four-face structure is formed, the switchable three-way device capable of preventing freezing and blocking further comprises an electric scraping plate assembly and an electric heating plate, and has the effects that materials attached to the inner wall of the three-way pipe body can be continuously scraped away, meanwhile, an operator can conveniently enter the three-way pipe body to conduct deep cleaning, maintenance or overhaul work on the three-way pipe body due to the arrangement of the opening and closing door, and the working efficiency is improved. The electric heating plate starts to heat after being electrified, and heat is transferred to the inner surface in contact with the material through the three-way pipe body and the opening and closing door, so that the temperature in the three-way pipe body is increased, and therefore, even if the external environment temperature is low, the material can keep a certain temperature when flowing in the three-way pipe body, and the phenomenon that the material is frozen due to too low temperature is avoided.

Description

Technical Field

[0001] The present invention relates to the field of three-way pipes, and more specifically, it relates to a switchable three-way pipe device for preventing freezing and blocking of materials and its usage method. Background Art

[0002] In modern industrial material conveying systems, three-way pipe devices, as core components for achieving material diversion and confluence, are widely used in fields such as mining, chemical industry, electric power, and building materials. Traditional three-way pipe devices usually adopt a circular cross-section design. Although they have the basic function of diversion, they expose significant technical defects under complex working conditions. Especially in low-temperature environments and scenarios of transporting highly viscous materials, problems such as frozen materials and blocked materials severely restrict production efficiency and safety, specifically manifested as follows: 1. The problem of frozen materials is prominent In cold environments, materials (such as pulverized coal, ore powder, chemical raw materials, etc.) are prone to losing fluidity due to freezing at low temperatures. Especially at the three-way diversion part, the residence time of the materials is relatively long, and after freezing, hard blocks are formed to block the pipeline; 2. The phenomenon of blocked materials occurs frequently The inner wall of the traditional three-way pipe has insufficient smoothness, and the viscous components in the materials (such as wet coal, oil-containing powder materials) are easily attached to the pipe wall to form an accumulation layer, which gradually thickens over time, resulting in a reduction in the effective cross-sectional area of the pipeline or even complete blockage.

[0003] Therefore, in order to solve the above technical problems, the present application proposes a switchable three-way pipe device for preventing freezing and blocking of materials and its usage method. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a switchable three-way pipe device for preventing freezing and blocking of materials and its usage method.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A switchable three-way pipe device for preventing freezing and blocking of materials, including a three-way pipe body 1, whose cross-section is square, thus forming a four-sided structure, and one of the sides is set as a switch door 2. The switchable three-way pipe device for preventing freezing and blocking of materials further includes: An electric scraper assembly 4, which is arranged on the other three sides inside the three-way pipe body 1. It includes a motor 401 arranged outside the three-way pipe body 1, and the motor 401 drives the rotation of a scraper A 402 inside the three-way pipe body 1, and the scraping ranges between the scrapers A 402 overlap; An electric heating plate 5, which is arranged on the side wall of the three-way pipe body 1 and inside the switch door 2, and is used to heat the surface of the three-way pipe body 1 in contact with the material to prevent frozen materials.

[0006] Preferably, each of the scraping plates A402 is equipped with a motor 401. Small holes are formed on the surface of the tee pipe body 1. The motor 401 is fixed on the outer wall of the tee pipe body 1. The transmission shaft part thereof passes through the small holes and fills the packing in the gap between the transmission shaft and the small holes. Pressure is applied to the packing through a gland to deform the packing and hold the transmission shaft tightly to achieve the purpose of sealing.

[0007] Preferably, the scraping plates A402 on each plane share a motor 401. Bearings 403 are fixedly embedded on the three surfaces of the tee pipe body 1. The rotating rod 404 is rotatably supported by the bearings 403. One end of the rotating rod 404 is fixed to the scraping plate A402. The other end of the scraping plate A402 is fixedly connected with a gear 405. A toothed belt 406 is meshed between the gears 405. One of the gears 405 is driven to rotate by the motor 401. The motor 401 is fixed to the surface of the tee pipe body 1 through a connecting plate 407.

[0008] Preferably, a guide rail A6 is fixedly connected to the back of the tee pipe body 1. A slider A7 is slidably connected to the surface of the guide rail A6. The surface of the slider A7 is fixed to the side end of the switch door 2 through an L-shaped plate 8. A connecting block A9 is fixedly connected to the surface of the switch door 2. A screw A10 is installed on the surface of the connecting block A9. A mounting plate A11 is fixedly connected to the side end of the tee pipe body 1. A through hole A12 for the screw A10 to pass through is formed on the surface of the mounting plate A11. A layer of rubber is coated on the contact surface between the tee pipe body 1 and the switch door 2. A nut is threadedly connected to the outer side wall of the screw A10.

[0009] Preferably, the switch door 2 is opened by flipping. A layer of rubber is coated on the contact surface between the tee pipe body 1 and the switch door 2. A connecting block B15 is fixedly connected to the side end of the switch door 2. A screw B16 is installed on the surface of the connecting block B15. A mounting plate B17 is fixedly connected to the side end of the tee pipe body 1. A through hole B18 for the screw B16 to pass through is formed on the surface of the mounting plate B17. A nut is threadedly connected to the outer side wall of the screw B16.

[0010] Preferably, an elastic scraping plate assembly 13 is installed on one side of the tee pipe body 1 where it moves relative to the mounting plate A11 to scrape the material on the switch door 2 when the switch door 2 is opened and closed.

[0011] Preferably, the elastic scraper assembly 13 includes a connecting groove base 1301 fixed to the side end of the tee pipe body 1, the surface thereof facing the switch door 2 is open, both sides inside the connecting groove base 1301 are fixedly connected with guide rails B1302 for the slider B1303 to slide, an elastic support plate 1304 is fixedly connected between the sliders B1303, an elastic air cushion 1305 is fixedly connected between the back surface of the elastic support plate 1304 and the inner surface of the connecting groove base 1301, a scraper B1306 is fixedly connected to the surface of the elastic support plate 1304, and slopes 13061 are provided on both sides of the scraper B1306.

[0012] Preferably, ceramic linings are installed on the inner side wall of the tee pipe body 1 and the contact surfaces of the switch door 2 with the material. An electric flap device 3 is installed at the diversion part of the tee pipe body 1 for controlling the material distribution of the tee pipe body 1.

[0013] Preferably, a handle 14 is fixedly connected to the surface of the switch door 2, facilitating the staff to pull or rotate the switch door 2.

[0014] The method of using the switchable tee device for preventing freezing and clogging of materials includes the following steps: Step 1: Fix the motor at the preset installation position on the outer wall of the tee pipe body. The transmission shaft passes through the small hole on the side wall and is connected to the scraper A. Use graphite packing to fill the gap between the transmission shaft and the small hole, and apply torque through the gland to press tightly to ensure the sealing performance. Power on and test the rotation direction and speed of the scraper A, and adjust it to match the material flow direction; Step 2: Connect the power supply of the electric heating plate, set the temperature control range, and then carry out the material conveying work of the tee pipe body. Step 3: During the material conveying process, control the material distribution of the tee pipe body by manipulating the electric flap device. Step 4: When it is necessary to deeply clean the inside of the tee pipe body, turn off the motor and the electric heating plate, remove the nut on the screw A, release the fixation of the switch door, pull the switch door outwards, and the slider A slides along the guide rail A to the fully open position; Step 5: After the deep cleaning is completed, close it again. When the switch door moves, the scraper B contacts the surface of the switch door body through the slope, and the elastic air cushion prompts the scraper B to form a contact pressure on the surface of the switch door. Observe the scraping effect of the scraper B, and adjust the pre-charged air pressure of the elastic air cushion if necessary.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Since the scraper A is arranged on the other three sides inside the tee pipe body, during its rotation, it can continuously scrape off the materials adhering to the inner wall of the tee pipe body. At the same time, the setting of the switch door enables the operator to conveniently enter the inside of the tee pipe body for in-depth cleaning, maintenance or repair work. And after the electric heating plate is powered on, it starts to generate heat, and the heat is transmitted to the inner surface in contact with the materials through the tee pipe body and the switch door, thereby increasing the temperature inside the tee pipe body. In this way, even when the external environmental temperature is low, the materials can maintain a certain temperature when flowing inside the tee pipe body, avoiding freezing due to too low temperature, so as to solve the problems in the background technology that in the scenarios of low-temperature environment and high-viscosity material transportation, problems such as frozen materials and blocked materials seriously restrict the production efficiency and safety; 2. The present invention installs a ceramic lining on the inner side wall of the tee pipe body, which improves the wear resistance and optimizes the material flow characteristics at the same time; 3. The present invention can deeply scrape off the materials adhering to it when the switch door is opened and closed through the elastic scraper assembly; 4. The present invention installs an electric flap device at the material distribution part of the tee pipe body to control the material distribution of the tee pipe body. Multiple material distribution modes such as main road priority and alternating diversion can be preset through programs to adapt to the dynamic change requirements of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention (using the first switch door structure and the first electric scraper assembly); Figure 2 is the present invention Figure 1 A partial enlarged view of the structure; Figure 3 is a schematic diagram of the specific surface structure of the present invention (using the first switch door structure and the first electric scraper assembly); Figure 4 is the present invention Figure 3 B partial enlarged view of the structure; Figure 5 is a schematic diagram of the specific back structure of the present invention (using the first switch door structure and the first electric scraper assembly); Figure 6 is the present invention Figure 5 C partial enlarged view of the structure; Figure 7 is the present invention Figure 5 D partial enlarged view of the structure; Figure 8Schematic top view structure of the present invention (using the first door opening / closing switch structure and the first electric scraper assembly); Figure 9 Schematic overall structure of the present invention using the second door opening / closing switch structure (using the first electric scraper assembly); Figure 10 Schematic specific structure of the second electric scraper assembly in the present invention.

[0017] In the figure: 1, three-way pipe body; 2, door; 3, electric flap device; 4, electric scraper assembly; 401, motor; 402, scraper A; 5, electric heating plate; 6, guide rail A; 7, slider A; 8, L-shaped plate; 9, connecting block A; 10, screw A; 11, mounting plate A; 12, through hole A; 13, elastic scraper assembly; 1301, connecting groove seat; 1302, guide rail B; 1303, slider B; 1304, elastic support plate; 1305, elastic air cushion; 1306, scraper B; 13061, slope; 14, handle. Detailed implementation mode

[0018] Embodiment 1 As Figures 1 to 3 , Figure 5 , Figure 8 , Figure 10 shown, the present invention provides a switchable three-way device for preventing freezing and clogging of materials, including a three-way pipe body 1 with a square cross-section, thus forming a four-sided structure, with one side set as a door 2. The switchable three-way device for preventing freezing and clogging of materials further includes: An electric scraper assembly 4, which is arranged on the other three sides inside the three-way pipe body 1, and includes a motor 401 arranged outside the three-way pipe body 1, and the scraper A 402 inside the three-way pipe body 1 is driven by the motor 401 to rotate, and the scraping ranges between the scrapers A 402 overlap; An electric heating plate 5, which is arranged at the side end of the three-way pipe body 1 and inside the door 2, and is used to heat the surface of the three-way pipe body 1 in contact with the material to avoid frozen materials.

[0019] The three-way pipe body 1 is the core structure of the entire device. The four-sided structure formed by its square cross-section provides a conveying channel for the material. The material flows inside the three-way pipe body 1 and can be split or merged according to actual needs. The setting of the switch door 2 enables the operator to conveniently enter the inside of the three-way pipe body 1 for in-depth cleaning, maintenance, or repair work. The electric scraper assembly 4 is a key component to prevent material blockage. When the device is started, the motor 401 located outside the three-way pipe body 1 starts to operate. The motor 401 transmits power to the scraper A 402 inside the three-way pipe body 1, driving the scraper A 402 to rotate. Since the scraper A 402 is arranged on the other three sides inside the three-way pipe body 1, during its rotation, it can continuously scrape the material attached to the inner wall of the three-way pipe body 1. It should be noted that since there is an overlap in the scraping range between the scrapers A 402 to prevent sticky material from forming between two scrapers A 402. During the conveying process, the material is easily attached to the inner wall of the pipeline due to various factors (such as humidity, viscosity, etc.). Over time, it may cause pipeline blockage. The continuous rotation of the scraper A 402 can timely scrape off these attached materials, enabling them to re-participate in the material flow, ensuring the smoothness of the material conveying channel inside the three-way pipe body 1, and avoiding blockage problems caused by material accumulation. The electric heating plate 5 is arranged inside the side wall of the three-way pipe body 1, and its working principle is based on heat transfer. When the device is in a cold environment, the electric heating plate 5 starts to generate heat after being powered on. The heat is transferred through the three-way pipe body 1 and the switch door 2 to the inner surface in contact with the material, thereby increasing the temperature inside the three-way pipe body 1. In this way, even when the external environmental temperature is low, the material can maintain a certain temperature when flowing inside the three-way pipe body 1, avoiding freezing due to too low temperature. The material maintaining good fluidity helps it to be smoothly conveyed inside the three-way pipe body 1, reducing problems such as pipeline blockage and unsmooth conveying caused by frozen material.

[0020] The present invention provides two types of electric scraper assemblies 4: The first type of electric scraper assembly 4: Each of the scrapers A 402 is equipped with a motor 401. Small holes are provided on the surface of the three-way pipe body 1 of the electric scraper assembly 4. The motor 401 is fixed on the three-way pipe body 1. The transmission shaft part passes through the small hole and then the packing is filled in the gap between the transmission shaft and the small hole. Pressure is applied to the packing through the gland to make the packing deform and hold the transmission shaft tightly to achieve the purpose of sealing and prevent the material from overflowing from here; Second Electric Scraper Assembly 4: The scrapers A402 on each plane share one motor 401 (it should be noted that the plane mentioned above separates the inclined part and the vertical part of one side of the tee pipe body 1. Since the angles of the inclined part and the vertical part are different, each uses one motor 401). Bearings 403 are fixedly embedded on three sides of the tee pipe body 1, and the rotating rod 404 is rotationally supported by the bearings 403. One end of the rotating rod 404 is fixed to the scraper A402, and a gear 405 is fixedly connected to the other end of the scraper A402. A toothed belt 406 is meshed between the gears 405. By driving one gear 405 to rotate with the motor 401, the motor 401 is fixed to the surface of the tee pipe body 1 through a connecting plate 407. During use, the motor 401 drives one gear 405 to rotate, and the gear 405 can drive the rotation of other gears 405 in the same inclined part or vertical part through the toothed belt 406 (one motor is installed in both the inclined part and the vertical part on the same plane), thereby driving the rotation of multiple rotating rods 404 (although only two are drawn in the figure, in actual situation, the number of rotating rods 404, bearings 403, and gears 405 can be added according to the number of scrapers A402 in the same inclined part or vertical part as needed). Then, the rotation of multiple scrapers A402 can be driven by the rotating rods 404. This can effectively reduce the number of motors 401 used. Compared with the first electric scraper assembly 4, this can not only save costs but also reduce the difficulty of power supply. Figure 10 In the figure, only two are drawn. In actual situation, the number of rotating rods 404, bearings 403, and gears 405 can be added according to the number of scrapers A402 in the same inclined part or vertical part as needed). Then, the rotation of multiple scrapers A402 can be driven by the rotating rods 404. This can effectively reduce the number of motors 401 used. Compared with the first electric scraper assembly 4, this can not only save costs but also reduce the difficulty of power supply.

[0021] The staff can select different electric scraper assemblies 4 according to the actual situation, and a handle 14 for pulling or rotating it is fixedly connected to the surface of the switch door 2, which is more conducive to the operation of the staff.

[0022] Furthermore: Ceramic linings are installed on the inner side wall of the tee pipe body 1 and the contact surface between the switch door 2 and the material. The lining is made of high-purity alumina (Al2O3) or silicon carbide (SiC) ceramic material, and its Mohs hardness reaches 9 (second only to diamond). It can withstand high-speed scouring of materials and chemical corrosion, and is completely fitted to the inner wall of the pipe body with the curved surface structure formed by precision machining. Interference fit is achieved through the thermal expansion and contraction process, the covalent bond connection at the joint is strengthened by ultrasonic welding, and the quality distribution is ensured to be uniform through dynamic balance verification. The gradient thickness design of the ceramic lining (8 mm in the shunt area, 5 - 6 mm in the straight pipe section, 4 - 5 mm in the switch door 2 area) and the surface nano-scale sandblasting texture treatment optimize the material flow characteristics while improving the wear resistance. The measured data shows that the wear rate of the ceramic lining is only 1 / 15 - 1 / 20 of that of ordinary carbon steel, and the service life is extended by more than 5 times. Combined with the electric scraper assembly 4, it can form a "self-cleaning" effect, significantly reducing the maintenance cost and improving the operation stability of the system. Finally, a handle 14 for pulling it back and forth is fixedly connected to the surface of the switch door 2, which is more convenient for the staff to open and close the switch door 2.

[0023] Example 2 As Figures 1 to 3 and Figure 5 - Figure 9 As shown, this embodiment gives the specific structures of the two types of door switches in Embodiment 1.

[0024] The switching structure of the first type of door switch 2: A guide rail A6 is fixedly connected to the back of the tee pipe body 1, and a slider A7 is slidably connected to the surface of the guide rail A6. The surface of the slider A7 is fixed to the side end of the door switch 2 through an L-shaped plate 8. A connecting block A9 is fixedly connected to the surface of the door switch 2, and a screw A10 is installed on the surface of the connecting block A9. One side of the tee pipe body 1 is fixedly connected to a mounting plate A11, and a through hole A12 for the screw A10 to pass through is provided on the surface of the mounting plate A11. A layer of rubber is coated on the contact surface between the tee pipe body 1 and the door switch 2, and a nut is threadedly connected to the outer side wall of the screw A10.

[0025] The guide rail A6 is fixed to the back of the tee pipe body 1, which provides a track basis for the linear movement of the door switch 2. The slider A7 can slide smoothly on the surface of the guide rail A6 and is fixedly connected to the side end of the door switch 2 through the L-shaped plate 8, so that the sliding of the slider A7 can directly drive the door switch 2 to move along the guide rail A6, ensuring the stability and directionality of the opening and closing process of the door switch 2. When it is necessary to close the door switch 2, push the door switch 2 to seal the opening on the surface of the tee pipe body 1. After sealing, the screw A10 on the connecting block A9 just passes through the through hole A12 provided on the mounting plate A11 (it should be noted that the through hole A12 at the inclined part of the mounting plate A11 is designed larger to avoid blocking the screw A10 at the inclined part on the connecting block A9), and the screw A10 can pass through this through hole A12. After the door switch 2 is closed, by threadedly connecting a nut to the outer side wall of the screw A10 and tightening the nut, the connection between the connecting block A9 and the mounting plate A11 can be fixed, and thus the door switch 2 is tightly fixed to the tee pipe body 1. At the same time, in order to enhance the sealing effect, a layer of rubber is coated on the contact surface between the tee pipe body 1 and the door switch 2, and this layer of rubber can fill the tiny gaps between the two to prevent material leakage.

[0026] The second switching structure of the switch door 2: The switch door 2 is opened by flipping. A layer of rubber is coated on the contact surface between the three-way pipe body 1 and the switch door 2 (the function of the rubber is referred to above). A connecting block B15 is fixedly connected to the side end of the switch door 2, and a screw B16 is installed on the surface of the connecting block B15. An installation plate B17 is fixedly connected to the side end of the three-way pipe body 1, and a through hole B18 for the screw B16 to pass through is opened on the surface of the installation plate B17. A nut is threadedly connected to the outer side wall of the screw B16. That is, the switch door 2 is switched by flipping. When the switch door 2 is closed, the screw B16 on the connecting block B15 also passes through the through hole B18 on the installation plate B17. Then, the nut can be installed on the screw B16 by rotating the nut clockwise. Tighten the nut to complete the firm fixation of the switch door 2 on the three-way pipe body 1. In this way, the switch door 2 is switched by flipping, which is beneficial to saving the horizontal distance compared with the first switching structure of the switch door 2, and the staff can choose to apply it according to needs.

[0027] Embodiment 3 As Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, on the basis of Embodiment 1, an electric flap device 3 is installed at the material distribution part of the three-way pipe body 1 to control the material distribution of the three-way pipe body 1 (discharging through two openings simultaneously, or controlling the discharge of one of the openings), and on the basis of the first switching structure of the switch door in Embodiment 2, an elastic scraping plate assembly 13 is installed on one side of the three-way pipe body 1 where it moves past the installation plate A11 to scrape the material on the switch door 2 when the switch door 2 is switched.

[0028] This electric flap device 3 adopts mechatronic design to achieve precise material distribution control. Its core structure includes: 1. Drive system: composed of a servo motor (with encoder) and a planetary reducer, connected to the central rotating shaft through a coupling; 2. Flap assembly: a fan-shaped alloy steel flap with a thickness of 6 mm, the surface is sprayed with a Teflon coating, and a ternary ethylene propylene rubber sealing strip is embedded at the edge, which can rotate around the central axis by 0° - 90°; 3. Sealing mechanism: adjustable wear-resistant linings are arranged on both sides of the diversion cavity, forming a labyrinth sealing structure with the flap; 4. Control module: integrated with a PLC controller and an angle sensor, supporting three material distribution modes: full-open mode (both outlets discharge simultaneously, the flap remains horizontal), left-channel mode (the flap tilts 45° to the right, the left outlet is the main channel), and right-channel mode (the flap tilts 45° to the left, the right outlet is the main channel). When the flap switches angles, the elastic scraper assembly 13 installed on the top of the diversion cavity automatically scrapes the residual material on the back of the flap through a ramp structure, and cooperates with the local heating of the electric heating plate 5 in the area of the flap rotating shaft (the temperature is maintained at 50 - 60 °C), effectively preventing wet materials from sticking and blocking. The response time of this device is ≤ 0.3 seconds, the angle control accuracy is ± 0.2 °, the leakage rate in the single-channel sealing state is < 0.1%, and it is suitable for the material distribution operation of bulk materials with a moisture content ≤ 15% and a particle size ≤ 40 mm.

[0029] The following is the specific structure of the elastic scraper assembly 13: The elastic scraper assembly 13 includes a connecting groove seat 1301 fixed to the side end of the tee pipe body 1, the surface facing the switch door 2 is open, both sides inside the connecting groove seat 1301 are fixedly connected with guide rails B1302 for the slider B1303 to slide, an elastic support plate 1304 is fixedly connected between the sliders B1303, an elastic air cushion 1305 is fixedly connected between the back surface of the elastic support plate 1304 and the inner surface of the connecting groove seat 1301, a scraper B1306 is fixedly connected to the surface of the elastic support plate 1304, and ramps 13061 are provided on both sides of the scraper B1306.

[0030] Opening process of the switch door 2 When the switch door 2 needs to be opened, the operator will pull the switch door 2 to slide it open along the guide rail A6. During the process of the switch door 2 gradually moving away from the closed position, the switch door 2 will come into contact with the scraper B1306. Since ramps 13061 are provided on both sides of the scraper B1306, the switch door 2 will first come into contact with the ramps 13061. As the switch door 2 continues to move, the ramps 13061 will be squeezed by the switch door 2.

[0031] This extrusion causes the squeegee B1306 to move inward into the connecting groove seat 1301 together with the elastic support plate 1304. The slider B1303 slides on the guide rail B1302, providing guidance and support for the movement of the elastic support plate 1304. At the same time, the movement of the elastic support plate 1304 squeezes the elastic air cushion 1305 between its back surface and the inner surface of the connecting groove seat 1301, and the elastic air cushion 1305 is compressed, storing elastic potential energy.

[0032] During this process, the squeegee B1306 always remains in contact with the switch door 2, and due to the rebounding force generated by the compression of the elastic air cushion 1305, the squeegee B1306 can adhere to the surface of the switch door 2 with a certain pressure. In this way, the squeegee B1306 can effectively scrape off the materials adhering to the surface of the switch door 2.

[0033] Closing process of the switch door 2 When closing the switch door 2, the switch door 2 slides reversely along the guide rail A6. Similarly, the switch door 2 will come into contact with the slope 13061 of the squeegee B1306 again. As the switch door 2 continues to move, it squeezes the slope 13061 again, causing the squeegee B1306 and the elastic support plate 1304 to move inward into the connecting groove seat 1301, further compressing the elastic air cushion 1305. The rebounding force of the elastic air cushion 1305 ensures that there is sufficient pressure between the squeegee B1306 and the switch door 2. During the closing process of the switch door 2, the squeegee B1306 continuously scrapes the surface of the switch door 2 to scrape off the materials that were not completely scraped off during the opening process of the switch door 2.

[0034] The present invention also provides a method for using the switchable three-way device for preventing freezing and clogging of materials as described above: Step 1: Fix the motor 401 at the preset installation position on the outer wall of the three-way pipe body 1. The transmission shaft passes through the small hole in the side wall and is connected to the squeegee A402. Use graphite packing to fill the gap between the transmission shaft and the small hole, and apply torque through the gland to tighten it to ensure tightness. Power on and test the rotation direction and speed of the squeegee A402 (it is recommended that the no-load speed be 15 - 20 r / min), and adjust it to match the material flow direction.

[0035] Step 2: Connect the power supply of the electric heating plate 5, set the temperature control range, and then carry out the material feeding work of the three-way pipe body 1; Step 3: During the material feeding process, control the material distribution of the three-way pipe body 1 by operating the electric flap device 3; Step 4: When it is necessary to deeply clean the inside of the three-way pipe body 1, turn off the motor 401 and the electric heating plate 5, remove the nut on the screw A10 to release the fixation of the switch door 2, pull the switch door 2 outward, and the slider A7 slides along the guide rail A6 to the fully open position; Step 5: Deep cleaning After the cleaning is completed, close it again. When the switch door 2 moves, the scraping plate B1306 contacts the surface of the door body of the switch door 2 through the ramp 13061. The elastic air cushion 1305 prompts the scraping plate B1306 to form a contact pressure on the surface of the switch door 2. Observe the material scraping effect of the scraping plate B1306 and adjust the pre-charged air pressure of the elastic air cushion 1305 if necessary.

[0036] The anti-freezing and material-blocking switchable three-way device of the present invention and its usage method have the following advantages: Since the scraping plate A402 is arranged on the other three sides inside the three-way pipe body 1, during its rotation, it can continuously scrape the materials attached to the inner wall of the three-way pipe body 1. At the same time, the setting of the switch door 2 enables the operator to conveniently enter the inside of the three-way pipe body 1 for deep cleaning, maintenance or repair work, and the electric heating plate 5 starts to generate heat after being powered on. The heat is transferred to the inner surface in contact with the material through the three-way pipe body 1 and the switch door 2, thereby increasing the temperature inside the three-way pipe body 1. In this way, even when the external environmental temperature is relatively low, the material can maintain a certain temperature when flowing inside the three-way pipe body 1, avoiding freezing due to too low temperature; Install a ceramic inner lining on the inner side wall of the three-way pipe body 1 to optimize the material flow characteristics while improving the wear resistance; Through the elastic scraping plate assembly 13, the materials attached to the switch door 2 can be deeply scraped when the switch door 2 is opened and closed; An electric flap device 3 is installed at the material distribution part of the three-way pipe body 1 to control the material distribution of the three-way pipe body 1. Multiple material distribution modes (such as main road priority, alternating diversion) can be preset through the program to adapt to the dynamic change requirements of the production line.

[0037] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention in any form; any ordinary technician in the industry can smoothly implement the present invention according to the instructions in the drawings and the above description; however, any equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above, such as slight modifications, decorations and evolutions, are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A switchable three-way device for antifreeze material blocking, characterized in that: It comprises a three-way pipe body (1) whose cross section is square, thereby forming a four-sided structure, one side of which is provided as a switch door (2). The switchable three-way device for antifreeze material blocking also comprises: An electric scraper assembly (4) is arranged on the other three surfaces inside the three-way tube body (1), and comprises a motor (401) arranged outside the three-way tube body (1), and the motor (401) drives the scrapers A (402) inside the three-way tube body (1) to rotate, and the scraping ranges of the scrapers A (402) overlap; The electric heating plate (5) is arranged on the side wall of the three-way pipe body (1) and inside the switch door (2), and is used to heat the surface of the three-way pipe body (1) in contact with the material to prevent the material from freezing.

2. A switchable three-way device for antifreeze material blocking according to claim 1, characterized in that: Each scraper A (402) is equipped with a motor (401). A small hole is opened on the surface of the three-way tube body (1). The motor (401) is fixed on the outer wall of the three-way tube body (1). After the transmission shaft part passes through the small hole, a filler is filled in the gap between the transmission shaft and the small hole. Pressure is applied to the filler through the gland, so that the filler is deformed and holds the transmission shaft tightly, thereby achieving the purpose of sealing.

3. The switchable three-way device for antifreeze material blocking according to claim 1, characterized in that: The scrapers A (402) on each plane share a common motor (401); bearings (403) are embedded and fixed on the three surfaces of the three-way tube body (1); a rotating rod (404) is rotatably supported by the bearings (403); one end of the rotating rod (404) is fixed to the scraper A (402); the other end of the scraper A (402) is fixedly connected to a gear (405); a toothed belt (406) is meshed between the gears (405); one of the gears (405) is driven to rotate by the motor (401); and the motor (401) is fixed to the surface of the three-way tube body (1) via a connecting plate (407).

4. The switchable three-way device for antifreeze material blocking according to claim 1, characterized in that: The back of the three-way tube body (1) is fixedly connected to a guide rail A (6), and the surface of the guide rail A (6) is slidably connected to a slider A (7), the surface of the slider A (7) is fixed to the side end of the switch door (2) through an L-shaped plate (8), the surface of the switch door (2) is fixedly connected to a connecting block A (9), and the surface of the connecting block A (9) is mounted with a screw rod A (10), the side end of the three-way tube body (1) is fixedly connected to a mounting plate A (11), and the surface of the mounting plate A (11) is provided with a through hole A (12) for the screw rod A (10) to pass through, the contact surface between the three-way tube body (1) and the switch door (2) is coated with a layer of rubber, and the outer wall of the screw rod A (10) is threadedly connected with a nut.

5. The switchable three-way device for antifreeze material blocking according to claim 1, characterized in that: The switch door (2) is opened by flipping, the contact surface between the three-way tube body (1) and the switch door (2) is coated with a layer of rubber, the side end of the switch door (2) is fixedly connected to a connecting block B (15), and a screw rod B (16) is installed on the surface of the connecting block B (15), the side end of the three-way tube body (1) is fixedly connected to a mounting plate B (17), and a through hole B (18) for the screw rod B (16) to pass through is opened on the surface of the mounting plate B (17), and a nut is threadedly connected to the outer wall of the screw rod B (16).

6. The switchable three-way device for antifreeze material blocking according to claim 4, characterized in that: An elastic scraper assembly (13) is installed on the side of the three-way pipe body (1) that moves relative to the mounting plate A (11) to scrape off the scraping material on the door (2) when the door (2) is opened and closed.

7. The switchable three-way device for antifreeze material blocking according to claim 6, characterized in that: The elastic scraper assembly (13) comprises a connecting groove seat (1301) fixed to the side end of the three-way pipe body (1), and the surface thereof facing the switch door (2) is open; guide rails B (1302) for sliding a slider B (1303) are fixedly connected to both sides of the interior of the connecting groove seat (1301); an elastic support plate (1304) is fixedly connected between the sliders B (1303); an elastic air cushion (1305) is fixedly connected between the back surface of the elastic support plate (1304) and the inner surface of the connecting groove seat (1301); a scraper B (1306) is fixedly connected to the surface of the elastic support plate (1304), and slopes (13061) are provided on both sides of the scraper B (1306).

8. The switchable three-way device for antifreeze material blocking according to claim 1, characterized in that: The inner side wall of the three-way pipe body (1) and the contact surface between the switch door (2) and the material are both provided with a ceramic lining, and the flow distribution portion of the three-way pipe body (1) is provided with an electric plate turning device (3) for controlling the material distribution of the three-way pipe body (1).

9. A switchable three-way device for antifreeze material blocking according to claim 4 or 5, characterized in that: A handle (14) is fixedly connected to the surface of the switch door (2).

10. A method for using the switchable three-way device for antifreeze material blocking according to any one of claims 1, 2, 4-8, characterized in that: The steps include: Step 1: Fix the motor (401) to the preset mounting position on the outer wall of the three-way pipe body (1), connect the drive shaft to the scraper A (402) after passing through the small hole in the side wall, fill the gap between the drive shaft and the small hole with graphite filler, apply torque to tighten through the gland to ensure the sealing, power on to test the rotation direction and speed of the scraper A (402), and adjust to match the material flow direction; Step 2: Connect the power supply of the electric heating plate (5), set the temperature control range, and then carry out the material feeding work of the three-way pipe body (1); Step 3: In the material conveying process, the material distribution of the three-way pipe body (1) is controlled by operating the electric flipping device (3); Step 4: When it is necessary to deeply clean the interior of the three-way pipe body (1), turn off the motor (401) and the electric heating plate (5), remove the nut on the screw rod A (10), release the fixing of the switch door (2), pull the switch door (2) outward, and slide the slider A (7) along the guide rail A (6) to the fully open position; Step 5: Deep cleaning After cleaning, the door (2) is closed again. When the door (2) is moving, the scraper B (1306) contacts the surface of the door (2) through the slope (13061). The elastic air cushion (1305) causes the scraper B (1306) to form contact pressure on the surface of the door (2). The scraping effect of the scraper B (1306) is observed, and the pre-charged air pressure of the elastic air cushion (1305) is adjusted if necessary.

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