Filter self-cleaning type low-temperature heat pump drying machine

Abstract

The utility model belongs to the field of drying machines, and particularly relates to a filter self-cleaning type low-temperature heat pump drying machine which comprises a material forming and slitting machine, a frame is fixedly installed on the surface of the material forming and slitting machine, and a heat preservation warehouse plate is fixedly installed at the top end of the frame. Self-cleaning is achieved through the vibration motor, discharged impurities are taken away along with material flow, the phenomenon that cleaning needs to be conducted due to the blocking phenomenon is avoided, production efficiency is improved, and the self-cleaning device can be suitable for treating occasions with large dust such as cow dung, pig manure and coal; the compressor is arranged nearby the evaporator and the condenser, so that a pipeline is shorter, and observation and maintenance are more convenient; the condenser, the evaporator and the economizer obtain larger mounting space and overhaul and maintenance space, so that operators can directly and manually overhaul and maintain the condenser, the evaporator and the economizer; in addition, a complete cavity is formed below the mesh belt body in the drying cavity, hot air buffering and ash cleaning are facilitated, and an ash cleaning device is convenient to mount subsequently.

Description

Technical Field

[0001] The utility model relates to the field of drying machines, in particular to a filter self-cleaning type low-temperature heat pump drying machine. Background Art

[0002] The low-temperature heat pump dryer absorbs low-temperature heat energy from the surrounding environment through the heat pump cycle and elevates it to high-temperature heat energy. The high-temperature heat energy is then transferred to the material to be dried to evaporate its moisture, thereby achieving the purpose of drying. During the use of the dryer, the impurities in the air retained by its filter will gradually increase, so the impurities in the filter need to be cleaned.

[0003] The mainstream low-temperature dryers in the market today all use bag filters. The filter installation position is not above the mesh belt, but above the economizer. The filter bag forms a pocket for holding dust and impurities when working, and the bag mouth faces upward and cannot be self-cleaned. When used in occasions with slightly larger impurities and dust, the filter bag will be blocked in a short time, which greatly limits the use of the dryer. The filter bag is a major workload for the operation of the dryer, because the blockage of the filter bag will directly lead to the energy consumption of the dryer system and even cause the system to paralyze. Therefore, in many industries with slightly larger dust, such as the treatment of cow dung, pig dung, coal and other industries, low-temperature dryers cannot be used. In addition, because the filter is installed above the economizer, most of the positions of the entire dryer can only be idle, and the space of the main cold and heat exchange position is very compact, resulting in no reserved maintenance space. Many parts can be seen but cannot be touched, which makes it difficult to clean and maintain, and then causes a small maintenance process to become a large maintenance process, thereby increasing economic losses. Therefore, a filter self-cleaning low-temperature heat pump dryer is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and avoid the problem that impurities in the filter are difficult to clean and affect the production efficiency, the utility model proposes a filter self-cleaning low-temperature heat pump dryer.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a filter self-cleaning low-temperature heat pump drying machine, including a material forming and cutting machine, a frame is fixedly installed on the surface of the material forming and cutting machine, a heat preservation storage plate is fixedly installed on the top of the frame, a vibration filter is fixedly installed on the top of the material forming and cutting machine, the bottom of the vibration filter is fixedly connected to the output shaft of the vibration motor, economizers are arranged on the left and right sides of the material forming and cutting machine, a condenser is arranged in the middle of the material forming and cutting machine, an evaporator is arranged at the bottom of the economizer in the material forming and cutting machine, compressors are fixedly installed on the left and right sides of the bottom of the material forming and cutting machine, and a fan is arranged in the middle of the bottom of the material forming and cutting machine.

[0006] Preferably, the material forming and strip cutting machine is composed of an upper hopper, an upper material level meter, a lower material level meter, an arch breaking motor, an arch breaking active shaft, an arch breaking driven shaft, an arch breaking bearing seat, a strip cutting active roller, a strip cutting driven roller, a strip cutting motor, a strip cutting bearing seat, a scraper, and an automatic butter machine. The material enters the upper hopper from above, and the material amount is controlled by the material level meter. The material reaches the arch breaking device by its own weight, and the arch breaking shaft squeezes the material into the strip cutting roller through the paddle on the active and driven shafts. As the roller rolls and squeezes, the material is formed into strips, discharged from the strip cutting machine, and falls onto the mesh belt body.

[0007] Preferably, a filter cartridge is provided inside the vibrating filter, and air enters from the circular opening at the bottom, intercepts impurities and dust through the filter bag, and is smoothly discharged from the top and the outer ring of the filter cartridge to continue circulating. The vibrating motor is electrically connected to a PLC controller. During operation, the vibrator with the vibrating filter is remotely controlled by the PLC controller to vibrate regularly, making it easier for air to be discharged from the filter. When too many impurities are intercepted, the vibration can cause the impurities to fall and be discharged with the movement of the afternoon material.

[0008] Preferably, a mesh belt drive motor is fixedly installed inside the material forming and cutting machine, an output shaft of the mesh belt drive motor is fixedly connected to a mesh belt body, and a mesh belt sprocket tensioning device is provided inside the material forming and cutting machine.

[0009] Preferably, a drying chamber is provided at the bottom of the material forming and slitting machine, and the drying chamber is located below the mesh belt body and is connected to the air outlet of the fan.

[0010] Preferably, the mesh belt sprocket tensioning device is composed of a tensioning bearing seat, a tensioning slide rail, a tensioning bolt and a locking nut in pairs, so that the mesh belt body is always in a tensioned state, thereby improving the transportation efficiency of materials.

[0011] The utility model is beneficial in that:

[0012] The utility model realizes self-cleaning through a vibrating motor, and the discharged impurities are taken away with the logistics, avoiding blockage and the need for cleaning, thereby improving production efficiency and being suitable for treating occasions with large dust such as cow dung, pig dung and coal; the compressor is installed close to the evaporator and condenser, so the pipeline is shorter, making observation and maintenance more convenient; and the condenser, evaporator and economizer have larger installation space and maintenance space, so that the operator can directly perform manual maintenance and maintenance; in addition, there is a complete cavity below the mesh belt body in the drying chamber, which is conducive to hot air caching and ash cleaning, and it is also convenient to install a cleaning device later. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal air flow of the utility model;

[0017] Figure 4 It is a right side structural schematic diagram of the utility model.

[0018] In the figure: 1. Material forming and cutting machine; 2. Insulated storage board; 3. Frame; 4. Belt vibration filter; 5. Vibration motor; 6. Economizer; 7. Condenser; 8. Evaporator; 9. Compressor; 10. Fan; 11. Mesh belt sprocket tensioning device; 12. Mesh belt body; 13. Mesh belt driving motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The following is combined with Figure 1-4 To further explain this application in detail,

[0021] The embodiment of the present application discloses a filter self-cleaning low-temperature heat pump dryer.

[0022] Reference Figure 1-Figure 3A filter self-cleaning low-temperature heat pump drying machine includes a material forming and cutting machine 1, which is composed of an upper hopper, an upper material level meter, a lower material level meter, an arch breaking motor, an arch breaking active shaft, an arch breaking driven shaft, an arch breaking bearing seat, a strip cutting active hob, a strip cutting driven hob, a strip cutting motor, a strip cutting bearing seat, a scraper, and an automatic butter machine. The material enters the upper hopper from the top, and the material amount is controlled by the material level meter. The material reaches the arch breaking device by its own weight, and the arch breaking shaft squeezes the material into the strip cutting hob through the paddle on the active and driven shafts. As the hob rolls and squeezes, the material is formed into strips and discharged from the strip cutting machine. A frame 3 is fixedly installed on the surface of the material forming and cutting machine 1, and a heat preservation storage plate 2 is fixedly installed on the top of the frame 3. A vibration filter 4 is fixedly installed on the top of the material forming and cutting machine 1, and a vibration motor is fixedly connected to the bottom of the vibration filter 4. The output shaft of the machine 5 is provided with a filter cartridge inside with a vibration filter 4. Air enters from the circular opening at the bottom, intercepts impurities and dust through the filter bag, and is smoothly discharged from the top and the outer ring of the filter cartridge to continue circulating. The vibration motor 5 is electrically connected to the PLC controller. During operation, the vibrator with the vibration filter 4 is remotely controlled by the PLC controller to vibrate regularly, so that the air can be more easily discharged from the filter. When too many impurities are intercepted, the vibration can make the impurities fall and be discharged with the movement of the afternoon material. Economizers 6 are provided on the left and right sides of the material forming and cutting machine 1, and a condenser 7 is provided in the middle of the material forming and cutting machine 1. An evaporator 8 is provided at the bottom of the economizer 6 inside the material forming and cutting machine 1. Compressors 9 are fixedly installed on the left and right sides of the bottom of the material forming and cutting machine 1, and a fan 10 is provided in the middle of the bottom of the material forming and cutting machine 1.

[0023] Reference Figure 1 , Figure 2 and Figure 4 A mesh belt drive motor 13 is fixedly installed inside the material forming and cutting machine 1, and the output shaft of the mesh belt drive motor 13 is fixedly connected to the mesh belt body 12. A drying chamber is opened at the bottom of the material forming and cutting machine 1, and the drying chamber is located below the mesh belt body 12 and is connected to the air outlet of the fan 10. A mesh belt sprocket tensioning device 11 is arranged inside the material forming and cutting machine 1. The mesh belt sprocket tensioning device 11 is composed of a tensioning bearing seat, a tensioning slide rail, a tightening bolt and a locking nut in pairs, so that the mesh belt body 12 is always in a tensioned state, thereby improving the transportation efficiency of the material.

[0024] Working principle: The operator first puts the material to be processed into the upper hopper from above the material forming and cutting machine 1. The material amount is controlled by the material level meter. The material reaches the arch breaking device by its own weight. The arch breaking shaft squeezes the material into the cutting roller through the paddle on the main and driven shafts. With the rolling and squeezing of the roller, the material is formed into strips, discharged from the cutting machine, and falls onto the mesh belt body 12.

[0025] At this time, the operator turns on the fan 10, and the fan 10 sends dry hot air to the drying chamber. The heat passes through the mesh belt body 12 below and the materials thereon, thereby taking away the moisture of the materials, and then passes through the mesh belt body 12 above and the materials thereon, and further takes away the moisture of the materials. At this time, the air is wet hot air, and enters the interior of the upper vibration filter 4. After that, the operator drives the vibration motor 5 to run periodically through the PLC controller, so that during the operation, the vibration motor 5 drives the vibrator of the vibration filter 4 to vibrate regularly, so that the air is easier to discharge from the vibration filter 4. When too many impurities are intercepted, the vibration can make the impurities fall, thereby renewing the cleaning. With a vibrating filter 4, dust gathers and falls with the vibration, and will move with the subsequent materials. The hot and humid air passing through the vibrating filter 4 passes through an economizer 6 and enters the interior of the evaporator 8. The evaporator 8 is the cold end of the refrigerant system. The hot and humid air is quickly cooled down, and condensed water drips into the bottom and is drained out of the equipment. The air discharged from the evaporator 8 is dry cold air, which passes through another economizer 6 and undergoes preliminary heat exchange. The preliminarily heated air passes through the condenser 7, which is the hot end of the refrigerant system. The air is heated when passing through it. The heated air is dry hot air, which is sent into the drying chamber after entering the interior of the fan 10, and the cycle is repeated.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A filter self-cleaning low-temperature heat pump dryer, characterized in that: The invention comprises a material forming and cutting machine (1), wherein a frame (3) is fixedly mounted on the surface of the material forming and cutting machine (1), a heat-insulating storage plate (2) is fixedly mounted on the top of the frame (3), a vibration filter (4) is fixedly mounted on the top of the material forming and cutting machine (1), the bottom of the vibration filter (4) is fixedly connected to the output shaft of a vibration motor (5), economizers (6) are arranged on the left and right sides of the material forming and cutting machine (1), a condenser (7) is arranged in the middle of the material forming and cutting machine (1), an evaporator (8) is arranged at the bottom of the economizer (6) in the material forming and cutting machine (1), compressors (9) are fixedly mounted on the left and right sides of the bottom of the material forming and cutting machine (1), and a fan (10) is arranged in the middle of the bottom of the material forming and cutting machine (1).

2. A filter self-cleaning low-temperature heat pump dryer according to claim 1, characterized in that: The material forming and strip cutting machine (1) is composed of an upper hopper, an upper material level meter, a lower material level meter, an arch breaking motor, an arch breaking active shaft, an arch breaking driven shaft, an arch breaking bearing seat, a strip cutting active roller, a strip cutting driven roller, a strip cutting motor, a strip cutting bearing seat, a scraper, and an automatic buttering machine.

3. The filter self-cleaning low-temperature heat pump dryer according to claim 1, characterized in that: The vibrating filter (4) is provided with a filter cartridge inside, and the vibrating motor (5) is electrically connected to a PLC controller.

4. The filter self-cleaning low-temperature heat pump dryer according to claim 1, characterized in that: A mesh belt drive motor (13) is fixedly installed inside the material forming and cutting machine (1), and the output shaft of the mesh belt drive motor (13) is fixedly connected to the mesh belt body (12). A mesh belt sprocket tensioning device (11) is arranged inside the material forming and cutting machine (1).

5. A filter self-cleaning low-temperature heat pump dryer according to claim 4, characterized in that: A drying chamber is provided at the bottom of the material forming and cutting machine (1), and the drying chamber is located below the mesh belt body (12) and is connected to the air outlet of the fan (10).

6. A filter self-cleaning low-temperature heat pump dryer according to claim 4, characterized in that: The mesh belt sprocket tensioning device (11) is composed of a tensioning bearing seat, a tensioning slide rail, a tensioning bolt and a locking nut in pairs.

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