Needled felt calendering device

Abstract

The utility model relates to the technical field of calendaring, and discloses a needle felt calendaring device which comprises a bottom plate and fixing plates, the fixing plates are vertically fixed on two sides of the surface of the bottom plate, and an upper outer frame and a lower outer frame are respectively fixed above and below the position between the fixing plates. And an upper heating roller and a lower heating roller are rotatably distributed between the fixed plates in the upper outer frame and the lower outer frame, and are in transmission connection with stepping motors mounted on the surfaces of the fixed plates at the tail ends of the upper heating roller and the lower heating roller. According to the technical scheme, the upper heating roller and the lower heating roller which are used for heating and calendering are arranged in the upper outer frame and the lower outer frame, and only areas in contact with the needled felt are exposed, so that during calendering, heat loss can be reduced, energy consumption can be reduced, and the service life of the needled felt is prolonged. And meanwhile, scrapers which are in contact with the surfaces of the upper heating roller and the lower heating roller are arranged in the upper outer frame and the lower outer frame, so that the surfaces of the upper heating roller and the lower heating roller can be scraped and cleaned during use, and the calendering effect is prevented from being influenced by adhered impurities.

Description

Technical Field

[0001] This utility model relates to the field of calendering technology, specifically to a needle-punched felt calendering device. Background Technology

[0002] Needle-punched felt is a commonly used auxiliary material for dust removal equipment. It has stable characteristics such as small pore size, high strength, corrosion resistance, high filtration load, and efficient dust collection. It can be divided into normal temperature needle-punched felt, antistatic needle-punched felt, easy-to-clean needle-punched felt, oil-proof and waterproof needle-punched felt, and coated needle-punched felt, etc. It is mainly used for smoke and dust removal in industries such as metallurgy, steel, chemical industry, food, building materials, petroleum and grain processing. During the production process, in order to improve the gloss and smoothness of the needle-punched felt surface, it needs to be calendered. That is, the needle-punched felt is subjected to high temperature and high pressure treatment using a pair of hot rollers. During this process, the needle-punched felt fibers are compressed and flattened, making the surface of the needle-punched felt smoother.

[0003] Because the heating roller has good thermal conductivity and a large contact area with air, it generates a lot of heat during use, resulting in high energy consumption. Furthermore, impurities from the needle-punched felt that adhere to the roller during use can affect the calendering effect. Therefore, we propose a needle-punched felt calendering device. Utility Model Content

[0004] The purpose of this utility model is to provide a needle-punched felt calendering device. By using an upper heating roller and a lower heating roller for heating and calendering, which are installed in the upper and lower outer frames, only the area in contact with the needle-punched felt is exposed. During the calendering process, heat loss can be reduced, thus reducing energy consumption. At the same time, scrapers that are in contact with the surfaces of the upper and lower heating rollers are provided in the upper and lower outer frames. During use, the surfaces of the rollers can be scraped and cleaned to prevent impurities from affecting the calendering effect, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a needle-punched felt calendering device, comprising a base plate and a fixing plate, wherein the fixing plate is vertically fixed on both sides of the surface of the base plate, and an upper outer frame and a lower outer frame are respectively fixed above and below the fixing plate; an upper heating roller and a lower heating roller are rotatably mounted between the fixing plates inside the upper and lower outer frames, and the upper and lower heating rollers are driven by stepper motors mounted on the surface of their end fixing plates; the bottom of the upper heating roller and the top of the lower heating roller are exposed to the outside through openings; electromagnetic heating coils close to the surface of the upper and lower heating rollers are installed inside the upper and lower outer frames on the sides of the upper and lower heating rollers; and scrapers in contact with the surface of the upper and lower heating rollers are also obliquely fixed inside the upper and lower outer frames.

[0006] By adopting the above technical solution, the heat loss of the upper and lower heating rollers during operation is reduced by utilizing the upper and lower outer frames and the heat insulation layer inside them. The scraper can scrape and clean the impurities on the surface of the upper and lower heating rollers when they rotate, ensuring that the subsequent calendering effect is not affected.

[0007] Optionally, the upper and lower outer frames of the scraper are provided with side openings, which are connected to the interior of the upper and lower outer frames.

[0008] By adopting the above technical solution, the impurities scraped off by the scraper can be discharged to the outside through the side opening.

[0009] Optionally, the upper and lower outer frames at the side opening are fixed with support frames, and the side plate is sealed to the side opening surface by the support frames.

[0010] By adopting the above technical solution, the side panel blocks the side opening during operation, preventing heat loss from the side opening.

[0011] Optionally, the bottom surface of the scraper is aligned with the bottom of the side opening.

[0012] By adopting the above technical solution, the scraper can also act as a guide plate, so that the scraped impurities are guided to be discharged from the side opening.

[0013] Optionally, a handle is fixed to the surface of the side plate, and the handle is located in the middle of the side plate surface.

[0014] By adopting the above technical solution, the side panel can be easily removed by holding it with a handle.

[0015] Optionally, the inner wall surfaces of the upper and lower outer frames are fitted and fixed with a heat insulation layer.

[0016] By adopting the above technical solutions, the heat insulation effect of the upper and lower outer frames is improved, and heat loss is further reduced.

[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0018] 1. The technical solution of this application uses an upper heating roller and a lower heating roller for heating and calendering, which are installed in the upper and lower outer frames, with only the area in contact with the needle-punched felt exposed. During the calendering process, heat loss can be reduced and energy consumption can be reduced. At the same time, scrapers that are in contact with the surfaces of the upper and lower heating rollers are provided in the upper and lower outer frames. During use, the surfaces of the two rollers can be scraped and cleaned to prevent impurities from affecting the calendering effect.

[0019] 2. The technical solution of this application provides side openings on the upper and lower outer frames of the scraper, which are then sealed by side plates. This allows for easy removal of the side plates and the scraper to guide and discharge impurities. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the needle-punched felt calendering device of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the upper and lower outer frames of the needle-punched felt calendering device of this utility model.

[0023] In the diagram: 1. Base plate; 2. Fixing plate; 21. Stepper motor; 3. Upper outer frame; 31. Upper heating roller; 4. Lower outer frame; 41. Lower heating roller; 5. Opening; 6. Scraper; 7. Side opening; 71. Support frame; 72. Side plate; 721. Handle; 8. Electromagnetic heating coil; 9. Insulation layer. Detailed Implementation

[0024] Please see Figure 1-2 This utility model provides a technical solution: a needle-punched felt calendering device, including a base plate 1 and a fixing plate 2. The fixing plate 2 is vertically fixed on both sides of the surface of the base plate 1. The fixing plates 2 on both sides are the same size and parallel to each other. An upper outer frame 3 and a lower outer frame 4 are fixed above and below the fixing plates 2, respectively. An upper heating roller 31 and a lower heating roller 41 are rotatably installed between the fixing plates 2 inside the upper outer frame 3 and the lower outer frame 4. The bottom of the upper heating roller 31 and the top of the lower heating roller 41 are exposed to the outside through an opening 5. An electromagnetic heating coil 8 is installed inside the upper outer frame 3 and the lower outer frame 4 on the sides of the upper heating roller 31 and the lower heating roller 41, close to the surface of the upper heating roller 31 and the lower heating roller 41. In use, the electromagnetic heating coil 8 heats the upper heating roller 31 and the lower heating roller 41 by electromagnetic induction.

[0025] The needle-punched felt to be calendered passes between the upper heating roller 31 and the lower heating roller 41 from right to left, so that the upper heating roller 31 and the lower heating roller 41 contact the surface of the needle-punched felt. The upper heating roller 31 and the lower heating roller 41 are connected to the stepper motor 21 mounted on the surface of their end fixing plate 2. In use, the stepper motor 21 drives the upper heating roller 31 to rotate clockwise, while the lower heating roller 41 is driven to rotate counterclockwise, which can transport the needle-punched felt to the left and use the heated upper heating roller 31 and the lower heating roller 41 to calender the needle-punched felt. Since the upper heating roller 31 and the lower heating roller 41 are housed in the upper outer frame 3 and the lower outer frame 4, with only a small part exposed, heat loss during use can be reduced and energy consumption can be reduced. In addition, the inner wall surfaces of the upper outer frame 3 and the lower outer frame 4 are attached and fixed with a heat insulation layer 9, which can improve the heat insulation effect of the upper outer frame 3 and the lower outer frame 4 and further reduce heat loss.

[0026] In order to prevent impurities from falling from the needle-punched felt from sticking to the surfaces of the upper heating roller 31 and the lower heating roller 41, scrapers 6 are also fixed at an angle inside the upper outer frame 3 and the lower outer frame 4, which are in contact with the surfaces of the upper heating roller 31 and the lower heating roller 41. When the upper heating roller 31 rotates clockwise and the lower heating roller 41 rotates counterclockwise, the scrapers 6 can be used to scrape off and clean the impurities stuck to their surfaces.

[0027] Side openings 7 are provided on the surfaces of the upper outer frame 3 and the lower outer frame 4 on the side of the scraper 6. The side openings 7 are connected to the interior of the upper outer frame 3 and the lower outer frame 4. A support frame 71 is fixed on the surface of the upper outer frame 3 and the lower outer frame 4 at the side opening 7. The side plate 72 is supported by the support frame 71 and sealed on the surface of the side opening 7. During the calendering operation, the side opening 7 is sealed to prevent heat dissipation. A handle 721 is fixed on the surface of the side plate 72. The handle 721 is located in the middle of the surface of the side plate 72. After a period of use, the side plate 72 can be removed through the handle 721 so that the scraped impurities can be discharged from the side opening 7.

[0028] In addition, the bottom surface of the scraper 6 is aligned with the bottom of the side opening 7, so that the impurities scraped off by the scraper 6 can be directly guided to the side opening 7. The scraper 6 has the function of guiding the impurities to be smoothly discharged from the side opening 7.

[0029] In use, both the stepper motor 21 and the electromagnetic heating coil 8 are connected to the control device. The needle-punched felt to be calendered passes between the upper outer frame 3 and the lower outer frame 4 from right to left, and passes between the upper heating roller 31 and the lower heating roller 41. During calendering, the upper heating roller 31 is driven to rotate clockwise, while the lower heating roller 41 is driven to rotate counterclockwise, which can transport the needle-punched felt to the left. The upper heating roller 31 and the lower heating roller 41 are heated by the electromagnetic heating coil 8, thereby achieving the purpose of calendering the needle-punched felt. Since the upper heating roller 31 and the lower heating roller 41 are mostly housed inside the upper outer frame 3 and the lower outer frame 4, and a heat insulation layer 9 is provided inside them, heat loss can be reduced. When the upper heating roller 31 rotates clockwise and the lower heating roller 41 rotates counterclockwise, the scraper 6 can be used to scrape off and clean the impurities of the needle-punched felt adhering to the outer surface of the upper heating roller 31 and the lower heating roller 41, ensuring the calendering effect during continuous use. Subsequently, the side plate 72 can be removed periodically through the handle 721 to discharge the scraped and cleaned impurities.

Claims

1. A needle felt calendering device comprising a base plate (1) and a fixed plate (2), characterized in that: The fixed plate (2) is vertically fixed on both sides of the surface of the bottom plate (1), and the upper outer frame (3) and the lower outer frame (4) are fixed above and below the fixed plate (2) respectively; The upper heating roller (31) and the lower heating roller (41) are rotatably arranged between the fixed plates (2) inside the upper outer frame (3) and the lower outer frame (4), the upper heating roller (31) and the lower heating roller (41) are drivingly connected with the step motor (21) fixed on the surface of the end fixed plate (2), the bottom of the upper heating roller (31) and the upper of the lower heating roller (41) are leaked to the outside through the opening (5), and the electromagnetic heating coil (8) close to the surface of the upper heating roller (31) and the lower heating roller (41) is arranged inside the upper outer frame (3) and the lower outer frame (4) on the side edge of the upper heating roller (31) and the lower heating roller (41), and the scraper (6) touching the surface of the upper heating roller (31) and the lower heating roller (41) is also fixed inside the upper outer frame (3) and the lower outer frame (4).

2. The needle felt calendering device according to claim 1, characterized in that: The side opening (7) is arranged on the surface of the upper outer frame (3) and the lower outer frame (4) on the side edge of the scraper (6), and the side opening (7) is communicated with the inside of the upper outer frame (3) and the lower outer frame (4).

3. The needle felt calendering device according to claim 2, characterized in that: The support frame (71) is fixed on the surface of the upper outer frame (3) and the lower outer frame (4) at the position of the side opening (7), and the side plate (72) is supported by the support frame (71) to block the surface of the side opening (7).

4. The needle felt calendering device of claim 2, wherein: The bottom surface of the scraper (6) is aligned with the bottom of the side opening (7).

5. The needle felt calendering device of claim 3, wherein: The handle (721) is fixed on the surface of the side plate (72), and the handle (721) is located at the middle position of the surface of the side plate (72).

6. The needle felt calendering device of claim 1, wherein: The heat insulation layer (9) is fixed on the inner wall surface of the upper outer frame (3) and the lower outer frame (4). The handle (721) is fixed on the surface of the side plate (72), and the handle (721) is located at the middle position of the surface of the side plate (72).

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