Thermoplastic polyurethane elastomer drying filter

Abstract

The utility model relates to the technical field of thermoplastic polyurethane elastomer drying and filtering, in particular to a thermoplastic polyurethane elastomer drying and filtering device which comprises a drying and filtering box, a filtering frame, a damper, a first spring, a telescopic rod, a fixing plate, a second spring, a feeding hopper and a material guiding frame. Four dampers are arranged at the four corners of the bottom of the filter frame, and the ends, away from the filter frame, of the four dampers are connected with the right side and the bottom of the interior of the drying filter box correspondingly; when materials slide down along the net face by means of gravity, fine particles penetrate through the filtering holes and fall to the right side of the box body, qualified materials slide to the left side, unpowered filtering is completed, energy consumption is reduced, the damper and the first spring cooperate for buffering when the filtering net is impacted, and the filtering frame rebounds and counteracts opposite force through the second spring. The three assemblies are dynamically balanced to limit displacement and disperse impact energy, impact resistance protection of the filter screen is achieved, and the problems of high energy consumption and filter screen damage of traditional vibration filtering are solved.

Description

Technical Field

[0001] This utility model relates to the field of thermoplastic polyurethane elastomer drying and filtration technology, and in particular to a thermoplastic polyurethane elastomer drying filter. Background Technology

[0002] Thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber, or TPU for short, is a (AB)n-type block linear polymer. A is a high molecular weight (1000-6000) polyester or polyether, and B is a diol containing 2-12 straight-chain carbon atoms. The chemical structure between the AB segments is a diisocyanate. In the processing of thermoplastic polyurethane elastomer, a drying filter is required for drying and filtration.

[0003] Common thermoplastic polyurethane elastomer dryer filters only include drying and filtering functions. They can dry and filter thermoplastic polyurethane elastomers, but they lack the functions of filter screen protection and energy consumption reduction. They cannot guarantee the service life of the filter screen and reduce processing costs. They often require the use of a vibration motor or cylinder to drive the filter screen to vibrate during the filtration of thermoplastic polyurethane elastomers. This consumes a lot of electricity and is prone to deformation or breakage of the thermoplastic polyurethane elastomers due to long-term impact on the filter screen, affecting the service life of the filter screen and processing costs.

[0004] Therefore, in view of the lack of filter screen protection and energy-saving functions in the above-mentioned thermoplastic polyurethane elastomer dryer filter, the traditional filtration process relies on vibration device to drive the filter screen, which has high energy consumption and the long-term impact of the material can easily cause the filter screen to deform and break, affecting the filter screen life and processing cost, there is an urgent need to design a new type of thermoplastic polyurethane elastomer dryer filter. Utility Model Content

[0005] To overcome the problems of common thermoplastic polyurethane elastomer dryer filters, such as lack of filter screen protection and energy-saving functions, the traditional filtration process relies on vibration devices to drive the filter screen, which consumes a lot of energy and the filter screen is prone to deformation and breakage due to long-term impact on the material, affecting the filter screen life and processing costs.

[0006] The technical solution of this utility model is as follows: a thermoplastic polyurethane elastomer dryer filter, comprising a dryer filter box, a filter frame, dampers, a first spring, telescopic rods, a fixing plate, a second spring, a feed hopper, and a guide frame. The filter frame is installed inside the dryer filter box. Four dampers are installed at the four corners of the bottom of the filter frame. The ends of the four dampers away from the filter frame are connected to the right side and bottom of the dryer filter box, respectively. The dampers are fitted with the first spring. Four telescopic rods are installed at the four corners of the bottom of the filter frame. The ends of the telescopic rods away from the filter frame are connected to the fixing plate. The four fixing plates are welded to the front and rear sides of the dryer filter box, respectively. The telescopic rods are fitted with the second spring. A feed hopper is installed at the top left side of the dryer filter box. A guide frame is installed at the top left side of the dryer filter box, corresponding to the position of the filter frame. The left end of the guide frame passes through the dryer filter box and connects to the feed hopper.

[0007] Preferably, material is fed into the feed hopper, where it slides into the guide frame. Once inside the guide frame, the material slides towards the filter frame until it falls onto the filter screen. Due to the screen's inclination, the material slides down the screen. Smaller materials are filtered and fall to the right side of the bottom of the drying filter box, while larger materials fall to the left side. This completes the non-powered filtration process, reducing energy consumption. A damper and a first spring buffer the impact force on the filter frame and screen. The first spring is compressed, and when the filter frame rebounds, a second spring further cushions the rebound force. The first spring extends while the second spring is compressed, and the damper, the first spring, and the second spring counterbalance each other to maintain the position of the filter frame and buffer the impact force on the filter screen, thus achieving the filter screen protection function. This addresses the common problem of thermoplastic polyurethane elastomer dryer filters, which only include drying and filtering functions. While they can dry and filter thermoplastic polyurethane elastomers, they lack filter screen protection and energy consumption reduction functions, and cannot guarantee the service life of the filter screen and reduce processing costs. This often results in the need to use a vibration motor or cylinder to drive the filter screen to vibrate during the filtration of thermoplastic polyurethane elastomers, which consumes a lot of electricity and is prone to deformation or breakage of the thermoplastic polyurethane elastomer due to long-term impact on the filter screen, affecting the service life of the filter screen and processing costs.

[0008] Preferably, the ends of the four first springs near the filter frame are welded to the filter frame, and the ends of the four first springs away from the filter frame are welded to the right side and bottom of the inside of the drying filter box, respectively. The ends of the four second springs near the filter frame are welded to the filter frame, and the ends of the second springs away from the filter frame are welded to the fixing plate.

[0009] Preferably, a filter screen is provided on the inner side of the filter frame, and a barrier pad is provided at the bottom of the filter frame, with the end of the barrier pad away from the filter frame connected to the bottom of the interior of the drying filter box.

[0010] Preferably, two irregularly shaped observation windows are symmetrically arranged on the front and rear sides of the drying filter box, corresponding to the positions of the fixing plates, and four self-locking casters are provided at the four corners of the bottom of the drying filter box.

[0011] Preferably, a left sealing door is movably connected to the bottom left side of the drying filter box via a hinge, and a right sealing door is movably connected to the bottom right side of the drying filter box via a hinge.

[0012] Preferably, the top of the drying filter box is provided with a top plate, with a through hole on the right side of the top center of the top plate, and a hot air fan is provided on the left side of the top center of the top plate.

[0013] Preferably, the output end on the right side of the hot air blower is connected to an air outlet pipe, and the end of the air outlet pipe away from the hot air blower is connected to an air supply pipe through a through hole.

[0014] The beneficial effects of this utility model are:

[0015] 1. After the material is introduced through the feed hopper, it slides naturally along the inner wall of the guide frame to the inclined filter screen surface in the filter frame. The material slides by its own weight with the help of the preset inclination angle of the filter screen, without the need for external power input. During the sliding process, fine particles pass through the filter screen holes and settle naturally to the lower right, while qualified materials slide along the inclined surface of the filter screen to the lower left collection area. The material's own weight and the screen structure work together to achieve powerless filtration. The material uses its own gravitational potential energy to drive the sliding process without the need for external power. This design completely replaces the traditional vibration motor or pneumatic drive mode through structural mechanics optimization, eliminating the need for external energy input and reducing the risk of mechanical vibration damaging the screen structure.

[0016] 2. When material impacts the filter screen, the damper and the first spring synchronously absorb the longitudinal impact load of the filter frame. Subsequently, during the rebound process, the filter frame triggers the compression deformation of the second spring, while the first spring simultaneously relaxes and releases energy. Through the dynamic balance between the viscous resistance of the damper and the elastic potential energy of the first and second springs, this buffering result transforms the alternating stress generated by the continuous impact of the material into the cyclic dissipation of heat energy and elastic potential energy. This avoids the cumulative damage to the filter screen lattice structure caused by stress concentration, ultimately achieving the effect of filter screen fatigue resistance. It realizes the axial displacement constraint of the filter frame and the multi-level buffering of the impact force of the filter screen, effectively suppressing the risk of filter screen deformation or breakage caused by long-term material impact. Attached Figure Description

[0017] Figure 1The diagram shown is a schematic representation of the overall structure of a thermoplastic polyurethane elastomer dryer filter according to this utility model.

[0018] Figure 2 The diagram shown is a schematic cross-sectional view of the thermoplastic polyurethane elastomer dryer filter according to this utility model.

[0019] Figure 3 The diagram shown is a schematic representation of the drying filter box structure of a thermoplastic polyurethane elastomer dryer according to this utility model.

[0020] Figure 4 The diagram shown is a schematic representation of the non-powered filter assembly of a thermoplastic polyurethane elastomer dryer according to this utility model.

[0021] Figure 5 The diagram shown is a schematic representation of the hot air mechanism of a thermoplastic polyurethane elastomer drying filter according to this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Drying filter box; 2. Filter frame; 3. Filter screen; 4. Damper; 5. First spring; 6. Telescopic rod; 7. Fixing plate; 8. Second spring; 9. Barrier pad; 10. Irregularly shaped observation window; 11. Self-locking caster wheel; 12. Feed hopper; 13. Guide frame; 14. Left sealing door; 15. Right sealing door; 16. Top plate; 17. Through hole; 18. Hot air blower; 19. Air outlet pipe; 20. Air supply pipe. Detailed Implementation

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

[0024] Please see Figures 1-5This utility model provides an embodiment: a thermoplastic polyurethane elastomer dryer filter, including a dryer filter box (1), a filter frame (2), dampers (4), a first spring (5), a telescopic rod (6), a fixing plate (7), a second spring (8), a feed hopper (12), and a guide frame (13). The dryer filter box (1) is equipped with a filter frame (2). Four dampers (4) are provided at the four corners of the bottom of the filter frame (2). The ends of the four dampers (4) away from the filter frame (2) are respectively connected to the right side and the bottom of the dryer filter box (1). The dampers (4) are surrounded by the first spring (5). The filter frame (1) 2) Four telescopic rods (6) are set at the four corners of the bottom. The end of the telescopic rod (6) away from the filter frame (2) is connected to a fixing plate (7). The four fixing plates (7) are welded to the front and rear sides of the inside of the drying filter box (1). The telescopic rod (6) is fitted with a second spring (8). A feed hopper (12) is set at the top left side of the drying filter box (1). A guide frame (13) is set at the top left side of the inside of the drying filter box (1) corresponding to the position of the filter frame (2). The left end of the guide frame (13) passes through the drying filter box (1) and connects to the feed hopper (12). After the material is introduced through the feed hopper (12), it is introduced along the slope of the guide frame (13). The material naturally slides to the filter frame (2) area and finally falls onto the surface of the inclined filter screen (3). Under the action of gravity, the material slides autonomously along the inclined surface of the filter screen (3). During this process, the small particles that do not meet the standards penetrate the filter holes and fall into the right collection area of ​​the drying filter box (1), while qualified materials slide into the left collection position. Through the synergistic effect of gravity sorting and screen interception, the filtration operation is achieved without external power input throughout the process, completely eliminating the energy consumption requirements of traditional vibration motors or cylinders driving the filter screen. When the material impacts the filter screen (3), the impact force is transmitted to the filter frame (2). The first spring (5) and the damper (4) are synchronously compressed to absorb the longitudinal load. The filter frame (2) During the rebound process, the second spring (8) is compressed and deformed to counteract the reverse force, while the first spring (5) extends and returns to its original position. Through the alternating action of the viscous resistance of the damper (4) and the elastic potential energy of the first spring (5) and the second spring (8), a multi-level buffer mechanism is formed, which not only limits the axial displacement of the filter frame (2), but also converts the instantaneous impact force borne by the filter screen (3) into elastic potential energy and heat energy for continuous dissipation, ultimately achieving the goal of protecting the filter screen from impact. This integrated solution solves the problem of excessive energy consumption caused by the reliance on vibration drive in traditional dryer filters, and at the same time significantly reduces the risk of fatigue damage caused by continuous impact of the filter screen through the mechanical buffer system.

[0025] Please see Figures 2-5In this embodiment, the ends of the four first springs (5) near the filter frame (2) are welded to the filter frame (2), and the ends of the four first springs (5) away from the filter frame (2) are welded to the right side and bottom of the inside of the drying filter box (1), respectively. The ends of the four second springs (8) near the filter frame (2) are welded to the filter frame (2), and the ends of the second springs (8) away from the filter frame (2) are welded to the fixing plate (7). The damper (4) and the first springs (5) buffer the impact force on the filter frame (2) and the filter screen (3), and the second springs (8) buffer the rebound force of the filter frame (2). The filter screen (3) is provided on the inner side of the filter frame (2). The bottom of the filter frame (2) is provided with a barrier pad (9). The end of the barrier pad (9) away from the filter frame (2) is connected to the bottom of the drying filter box (1). The material is filtered by the filter screen (3). The material on the left and right sides of the bottom of the drying filter box (1) is blocked by the barrier pad (9). Two irregular observation windows (10) are symmetrically arranged on the front and rear sides of the drying filter box (1) corresponding to the position of the fixed plate (7). Four self-locking universal wheels (11) are provided at the four corners of the bottom of the drying filter box (1). The working condition inside the box can be observed through the irregular observation windows (10). The device can be moved to the designated position through the self-locking universal wheels (11).

[0026] Please see Figures 1-5 In this embodiment, a left sealing door (14) is movably connected to the bottom left side of the drying filter box (1) via a hinge, and a right sealing door (15) is movably connected to the bottom right side of the drying filter box (1) via a hinge. Opening the left sealing door (14) allows materials of the correct size to be taken out, while opening the right sealing door (15) allows materials of smaller size to be taken out. A top plate (16) is provided on the top of the drying filter box (1), and a through hole (17) is provided on the right side of the top center of the top plate (16). (16) A hot air blower (18) is installed on the left side of the top middle. Hot air is blown out by starting the hot air blower (18). An air outlet pipe (19) is connected to the output end of the hot air blower (18). The end of the air outlet pipe (19) away from the hot air blower (18) is connected to the air supply pipe (20) through the through hole (17). The hot air blown out by the hot air blower (18) is blown into the air supply pipe (20) through the air outlet pipe (19), and then blown into the interior of the drying filter box (1) through the air supply pipe (20) to dry the material.

[0027] During operation, material is fed into the feed hopper (12). The material in the feed hopper (12) slides into the guide frame (13). After entering the guide frame (13), the material slides towards the filter frame (2) until it falls from the guide frame (13) onto the filter screen (3). At this time, because the filter screen (3) has a certain inclination, the material slides down along the filter screen (3). During the process of the material falling, the smaller material will fall to the right side of the bottom of the drying filter box (1) after being filtered by the filter screen (3), while the material with the correct size will fall to the left side of the bottom of the drying filter box (1). When the material impacts the filter screen (3), the impact force is transmitted to the filter frame (2). The first spring (5) and the damper (4) are compressed synchronously to absorb the longitudinal load. The filter frame (2) rebounds. During the process, the second spring (8) is compressed and deformed to counteract the reverse force, while the first spring (5) extends and returns to its original position. Through the alternating action of the viscous resistance of the damper (4) and the elastic potential energy of the first spring (5) and the second spring (8), a multi-level buffer mechanism is formed, which not only limits the axial displacement of the filter frame (2), but also converts the instantaneous impact force borne by the filter screen (3) into elastic potential energy and heat energy for continuous dissipation, ultimately achieving the goal of filter screen impact protection. At the same time, by starting the hot air blower (18), hot air is blown out. The hot air blown out by the hot air blower (18) is blown into the air supply pipe (20) through the air outlet pipe (19), and then blown into the interior of the drying filter box (1) through the air supply pipe (20) to dry the material. After the material is filtered and dried, the left sealing door (14) can be opened to take out the material with qualified specifications and the right sealing door (15) can be opened to take out the material with smaller specifications and the material with smaller specifications.

[0028] Through the above steps, after the material is fed through the feed hopper (12), it slides naturally along the inner wall of the guide frame (13) to the filter frame (2) area and finally falls onto the surface of the inclined filter screen (3). Under the action of the inclined angle of the filter screen (3), the material continues to slide down the screen surface by its own gravity. During the sliding process, the small particles that do not meet the standards penetrate the filter holes and fall to the bottom right area of ​​the drying filter box (1), while the qualified materials slide to the left collection position. The grading and screening process driven by the material's own weight realizes the filtration function without external power consumption. When material impacts the filter screen (3), the longitudinal impact force on the filter frame (2) is buffered by the damper (4) and the first spring (5). The first spring (5) is compressed and stores energy to offset the impact energy. The reverse force generated when the filter frame (2) rebounds is buffered by the second spring (8) through compression deformation. At the same time, the first spring (5) extends and resets. The viscous resistance of the damper (4) and the elastic potential energy of the first spring (5) and the second spring (8) are dynamically balanced, which limits the displacement amplitude of the filter frame (2) and also keeps the filter screen (3) in a stable position. 3) The instantaneous impact force is converted into continuously dissipated elastic potential energy, ultimately achieving the filter's impact protection function. This solves the energy consumption problem and mechanical damage risk of traditional filters that rely on vibration drive. It addresses the common issue of thermoplastic polyurethane elastomer dry filters, which only include drying and filtering functions. While they can dry and filter thermoplastic polyurethane elastomers, they lack filter protection and energy consumption reduction capabilities, failing to guarantee filter lifespan and reduce processing costs. Furthermore, when materials continuously impact the filter surface during filtration, the filter cannot reduce mechanical stress through buffering or dispersion, leading to long-term deformation and breakage. Additionally, traditional filtration operations rely on vibration motors or cylinders to drive high-frequency vibration of the filter to improve filtration efficiency. This method not only continuously consumes a large amount of electrical energy, but the repeated impacts from vibration accelerate structural fatigue of the filter, further shortening its lifespan. This technological limitation makes it difficult to balance filtration efficiency and filter durability in continuous production scenarios, affecting filter lifespan and processing costs.

Claims

1. A thermoplastic polyurethane elastomer dryer filter, comprising a dryer filter box (1); characterized in that: It also includes a filter frame (2), dampers (4), a first spring (5), a telescopic rod (6), a fixing plate (7), a second spring (8), a feed hopper (12), and a guide frame (13). The filter frame (2) is installed inside the drying filter box (1). Four dampers (4) are installed at the four corners of the bottom of the filter frame (2). The ends of the four dampers (4) away from the filter frame (2) are connected to the right side and the bottom of the drying filter box (1) respectively. The dampers (4) are surrounded by the first spring (5). The four corners of the bottom of the filter frame (2) Four telescopic rods (6) are provided at the location. The end of the telescopic rod (6) away from the filter frame (2) is connected to a fixing plate (7). The four fixing plates (7) are welded to the front and rear sides of the inside of the drying filter box (1). The telescopic rod (6) is fitted with a second spring (8). A feed hopper (12) is provided at the top left side of the drying filter box (1). A guide frame (13) is provided at the top left side of the inside of the drying filter box (1) corresponding to the position of the filter frame (2). The left end of the guide frame (13) passes through the drying filter box (1) and connects to the feed hopper (12).

2. The thermoplastic polyurethane elastomer dryer filter according to claim 1, characterized in that: The ends of the four first springs (5) near the filter frame (2) are all welded to the filter frame (2). The ends of the four first springs (5) away from the filter frame (2) are respectively welded to the right side and bottom of the inside of the drying filter box (1). The ends of the four second springs (8) near the filter frame (2) are all welded to the filter frame (2). The ends of the second springs (8) away from the filter frame (2) are welded to the fixing plate (7).

3. The thermoplastic polyurethane elastomer dryer filter according to claim 1, characterized in that: A filter screen (3) is provided on the inner side of the filter frame (2), and a barrier pad (9) is provided at the bottom of the filter frame (2). The end of the barrier pad (9) away from the filter frame (2) is connected to the bottom of the dry filter box (1).

4. The thermoplastic polyurethane elastomer dryer filter according to claim 1, characterized in that: Two irregularly shaped observation windows (10) are symmetrically arranged on the front and rear sides of the drying filter box (1) corresponding to the position of the fixing plate (7), and four self-locking universal wheels (11) are arranged at the four corners of the bottom of the drying filter box (1).

5. A thermoplastic polyurethane elastomer dryer filter according to claim 1, characterized in that: The bottom left side of the drying filter box (1) is connected to a left sealing door (14) via a hinge, and the bottom right side of the drying filter box (1) is connected to a right sealing door (15) via a hinge.

6. The thermoplastic polyurethane elastomer dryer filter according to claim 1, characterized in that: The top of the drying filter box (1) is provided with a top plate (16), and a through hole (17) is provided on the right side of the top middle of the top plate (16), and a hot air blower (18) is provided on the left side of the top middle of the top plate (16).

7. A thermoplastic polyurethane elastomer dryer filter according to claim 6, characterized in that: The output end of the hot air blower (18) is connected to an air outlet pipe (19), and the end of the air outlet pipe (19) away from the hot air blower (18) is connected to an air supply pipe (20) through a through hole (17).

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