High-efficiency and energy-saving VOC (volatile organic compound) removal system

Abstract

The invention relates to the field of plastic particle treatment equipment, in particular to an efficient and energy-saving VOC removal system which comprises a temporary storage bin and a plurality of odor removal bins, plastic particles are stored in an inner cavity of the temporary storage bin, and the discharging end of the temporary storage bin is sequentially communicated with the feeding ends of the odor removal bins through pipelines. According to the plastic particle deodorizing device, the buffering bin and the multiple deodorizing bins are arranged, so that the deodorizing operation of the plastic particles is stably carried out, when one deodorizing bin is used for deodorizing the plastic particles, the other deodorizing bin is used for feeding or discharging, it is guaranteed that the multiple deodorizing bins are used for deodorizing the plastic particles at the same time, and therefore the use efficiency of the deodorizing bins is improved.

Description

Technical Field

[0001] The present application relates to the field of plastic particle processing equipment, and in particular to a system for removing VOCs with high efficiency and energy saving. Background Art

[0002] The particles produced by engineering plastic granulation often contain volatile organic compounds (VOCs). The plastic particles are transported from the vibrating screening silo to the deodorization bin through a negative pressure Roots blower, and the deodorization bin deodorizes the plastic particles.

[0003] Deodorization is only carried out when the deodorization bin is filled with plastic particles, and it takes 3-5 hours for the deodorization bin to be filled with plastic particles and for the plastic particles to be discharged from the deodorization bin. When there are two or more deodorization bins, when one deodorization bin is discharging material, the other deodorization bin needs to be used for discharging or feeding material, but there is no transfer design, which leads to reduced efficiency in the use of the deodorization bins. Summary of the invention

[0004] In order to improve the problem of the efficiency of using the deodorization chamber, the present application provides a system for removing VOCs with high efficiency and energy saving.

[0005] The present application provides a system for removing VOCs with high efficiency and energy saving, which adopts the following technical solutions: A highly efficient and energy-saving VOC removal system comprises a buffer bin and a plurality of deodorization bins. The inner cavity of the buffer bin is used for storing plastic particles. The discharge end of the buffer bin is connected with the feed ends of the plurality of deodorization bins in sequence through pipelines.

[0006] By adopting the above technical scheme, plastic particles are transported from the vibrating screening silo to the storage silo through the negative pressure Roots blower. The storage silo can store plastic particles. The plastic particles in the storage silo are filled into the inner cavities of multiple deodorization silos in turn through the pipeline. When multiple deodorization silos are performing deodorization operations on plastic particles at the same time, the plastic particles stably enter the storage silo from the vibrating screening silo through the negative pressure Roots blower. The plastic particles in the multiple deodorization silos are stably discharged after deodorization. At the same time, the produced plastic particles continue to be stably injected into the storage silo from the vibrating screening silo through the negative pressure Roots blower. The above operations are repeated to achieve stable deodorization of plastic particles. There is no need for one deodorization silo to deodorize plastic particles while another deodorization silo is feeding or discharging. This ensures that multiple deodorization silos are deodorizing plastic particles at the same time, thereby improving the utilization efficiency of the deodorization silos.

[0007] Optionally, a cooling bin is also included, wherein a feeding end of the cooling bin is connected to a plurality of discharging ends of deodorization bins in sequence through a pipeline, and a negative pressure Roots blower is connected to the pipeline. The negative pressure Roots blower drives the plastic particles in the deodorization bin into the cooling bin through the pipeline, and the cooling bin cools the plastic particles. A valve body is connected to the discharging end of the cooling bin, and the valve body can control the opening and closing of the discharging end of the cooling bin.

[0008] By adopting the above technical solution, when the deodorization operation of the plastic particles in the deodorization bin is completed, the negative pressure Roots blower drives the plastic particles in the deodorization bin through the pipe into the cooling bin, and the cooling bin cools the plastic particles. When the plastic particles in the cooling bin are cooled, the valve body is opened, and the cooled plastic particles are discharged from the cooling bin and packaged, thereby realizing the storage of the plastic particles.

[0009] Optionally, a circulation component is connected between the cache bin and the deodorization bin, and the circulation component includes a heat exchanger, a return air duct and a fan. One end of the return air duct is connected to the air outlet of the deodorization bin, and the other end of the return air duct is connected to one of the air inlet ends of the heat exchanger. The air in the deodorization bin enters the heat exchanger through the return air duct, and the other air inlet end of the heat exchanger is for natural air to enter. The air inlet end of the fan is connected to one of the air outlet ends of the heat exchanger, and the air outlet end of the fan is connected to the air inlet end of the cache bin. The fan drives natural air to enter the cache bin through the heat exchanger, and the other air outlet end of the heat exchanger is for connection with an external exhaust duct.

[0010] By adopting the above technical scheme, during the deodorization process of plastic particles in the deodorization bin, the high-temperature air in the deodorization bin enters the heat exchanger one through the return air duct and is discharged from the external exhaust duct. At the same time, the fan one drives the natural air to enter the buffer bin through the heat exchanger one. The natural air and the high-temperature air exchange heat in the heat exchanger one to achieve heating of the natural air. The heated natural air enters the buffer bin to heat the plastic particles, thereby achieving preheating of the plastic particles in the buffer bin, thereby improving the deodorization efficiency of the plastic particles.

[0011] Optionally, the circulation component also includes an air filter, a second heat exchanger, a second fan and a heating pipe. The air filter and the second heat exchanger are connected to the return air duct at intervals. The air in the deodorization bin passes through the air filter and the second heat exchanger in sequence and enters the first heat exchanger. The air filter can filter moisture in the air. The second fan inlet is connected to the second heat exchanger outlet, the second fan outlet is connected to the inlet of the heating pipe, and the heating outlet is connected to the inlet of the deodorization bin. The second fan drives natural air to pass through the second heat exchanger and the heating pipe in sequence and enter the deodorization bin.

[0012] By adopting the above technical scheme, fan 2 drives natural air to pass through heat exchanger 2 and heating pipe in turn and enter the deodorization chamber, the heating pipe heats the natural air, and the heated natural air enters the deodorization chamber to heat the plastic particles, thereby accelerating the discharge of volatile organic compounds in the plastic particles. At the same time, the high-temperature air in the deodorization chamber passes through the air filter element and heat exchanger 2 in turn and enters the heat exchanger 1, the air filter element filters the moisture in the high-temperature air, and the high-temperature air and natural air perform heat exchange in heat exchanger 2, thereby realizing preheating of the natural air and reducing the energy consumption of the heating pipe, thereby embodying the concept of energy saving.

[0013] Optionally, an exhaust duct is connected to the air outlet of the cache bin, and the exhaust duct is connected to an external exhaust gas duct.

[0014] By adopting the above technical solution, the exhaust gas in the cache is discharged from the external exhaust gas duct through the exhaust duct, so that the toxic gas in the exhaust gas is not easy to pollute the environment, thereby embodying the concept of environmental protection.

[0015] Optionally, a diffuser is connected to the inner wall of the cache bin, and the diffuser promotes air flow in the cache bin.

[0016] By adopting the above technical solution, the diffuser promotes the air flow in the cache bin, the air fully contacts and exchanges heat with the plastic particles, thereby increasing the residence time of the air in the cache bin and achieving heat insulation of the inner cavity of the cache bin.

[0017] Optionally, the buffer bin feed end is connected to a vacuum hopper, plastic particles enter the vacuum hopper from the vibrating screening bin through a negative pressure Roots blower, and the plastic particles in the vacuum hopper enter the inner cavity of the buffer bin from the buffer bin feed end, and the vacuum hopper is connected to a cleaning assembly, the cleaning assembly includes a reciprocating screw and a cleaning ring, the reciprocating screw is rotatably connected to the inner cavity wall of the vacuum hopper, the cleaning ring is threadedly connected to the outer wall of the reciprocating screw, and the cleaning end of the cleaning ring presses against the inner wall of the vacuum hopper to scrape off the plastic particles.

[0018] By adopting the above technical scheme, plastic particles enter the inner cavity of the vacuum hopper from the vibrating screening silo through the negative pressure Roots blower. The vacuum hopper is installed at the feed end of the buffer bin. The plastic particles in the vacuum hopper enter the inner cavity of the buffer bin from the feed end of the buffer bin, thereby realizing the storage of plastic particles in the buffer bin. At the same time, the reciprocating screw rotates on the inner cavity wall of the vacuum hopper, driving the cleaning ring to slide on the inner wall of the vacuum hopper along the axis of the reciprocating screw. The cleaning end of the cleaning ring presses against the inner wall of the vacuum hopper and scrapes off the plastic particles, making it difficult for the plastic particles to adhere to the inner wall of the vacuum hopper, thereby ensuring the stability of the plastic particles being transported from the vacuum hopper into the inner cavity of the buffer bin.

[0019] Optionally, the cleaning component also includes a ventilation hood, an air inlet duct and an air outlet duct, the ventilation hood is connected to the outer peripheral surface of the vacuum hopper, the inner cavity of the ventilation hood surrounds the outer peripheral surface of the vacuum hopper, one end of the air inlet duct is connected to the surface of the ventilation hood, and the other end of the air inlet duct is connected to a return air duct, the high-temperature air in the return air duct enters the inner cavity of the ventilation hood through the air inlet duct, one end of the air outlet duct is connected to the surface of the ventilation hood, and the other end of the air outlet duct is connected to an external exhaust gas duct, and the air in the ventilation hood is discharged from the external exhaust gas duct through the air outlet duct.

[0020] By adopting the above technical scheme, the high-temperature air in the deodorization bin passes through the air filter element, the second heat exchanger, the return air duct and the air inlet duct in sequence and enters the inner cavity of the ventilation hood. The inner cavity of the ventilation hood surrounds the inner cavity of the vacuum hopper. The high-temperature air in the ventilation hood fully contacts and exchanges heat with the outer peripheral surface of the vacuum hopper, thereby heating the vacuum hopper and promoting the drying of the plastic particles in the vacuum hopper, making it difficult for the plastic particles to adhere to the inner cavity wall of the vacuum hopper, thereby improving the discharge efficiency of the plastic particles in the vacuum hopper.

[0021] Optionally, a transmission assembly is connected between the ventilation hood and the reciprocating screw, and the transmission assembly includes a transmission impeller, at least two synchronous wheels and a synchronous belt used in conjunction with the synchronous wheels. The transmission impeller is rotatably connected to the inner wall of the ventilation hood, and the outlet end of the air inlet duct faces the transmission impeller blades. The axis of the transmission impeller and the axis of the reciprocating screw are parallel to each other, one of the synchronous wheels is coaxially connected to the rotating shaft of the transmission impeller, and the other synchronous wheel is coaxially connected to the reciprocating screw, and the synchronous belt is tensioned to connect the two synchronous wheels.

[0022] By adopting the above technical solution, when high-temperature air enters the inner cavity of the ventilation hood through the air inlet duct, the high-temperature air impacts the transmission impeller blades and drives the transmission impeller to rotate. The synchronous belt tensions the two synchronous wheels, driving the reciprocating screw to rotate on the inner wall of the vacuum hopper. There is no need for an external power device to drive the reciprocating screw to rotate, which reduces energy loss and reflects the concept of energy saving.

[0023] Optionally, the vacuum hopper includes a hopper and a vacuum pump, the inner cavity of the hopper is used to store plastic particles, the ventilation hood is connected to the surface of the hopper, the vacuum pump is connected to the surface of the hopper, the vacuum pump can extract air from the inner cavity of the hopper, the inner cavity wall of the hopper is provided with an air outlet channel, the air outlet channel is connected to the air inlet end of the vacuum pump, the hopper is connected to a filter assembly, the filter assembly includes a cam, a filter screen, a filter plate, an elastic member and a plurality of filter rods, the filter screen is connected to the inner wall of the air outlet channel, the filter screen can filter impurities in the air, and the end of the transmission impeller is penetrated by the outer wall of the ventilation hood and the outer wall of the hopper in sequence And is located in the air outlet channel, the cam is connected to the end of the transmission impeller located in the air outlet channel, the elastic member 1 is connected to the inner wall of the air outlet channel, the other end of the elastic member 1 in the elastic force direction is connected to the filter plate surface, the elastic member 1 has the elastic force to drive the filter plate surface to press against the cam wheel surface, and the filter plate surface has a tendency to roll with the cam wheel surface, a plurality of filter rods are connected at intervals on the surface of the filter plate facing the filter net, the filter rods correspond to the filter holes on the filter net one by one, and when the cam drives the filter plate to slide in the direction close to the filter net, the filter rods correspond to the filter holes on the filter net one by one and are embedded.

[0024] By adopting the above technical scheme, one end of the elastic member in an elastic direction is connected to the inner wall of the air outlet flow channel, and the other end of the elastic member in an elastic direction is connected to the filter plate surface. The elastic force of the elastic member drives the filter plate surface to press against the cam wheel surface, and the cam wheel surface is in rolling contact with the filter plate surface. The cam has a large end and a small end. When the small end of the cam abuts against the filter plate surface, the filter plate is driven to slide along the inner wall of the air outlet flow channel in a direction close to the filter screen, and the filter rod corresponds to and is embedded in the filter holes on the filter screen one by one, and the filter rod scrapes off the impurities on the inner wall of the filter holes on the filter screen, thereby realizing directional cleaning of the filter screen; when the small end of the cam abuts against the filter plate surface, the filter plate is driven to slide along the inner wall of the air outlet flow channel in a direction away from the filter screen, and the end of the filter rod is separated from the filter holes on the filter screen, thereby realizing the detachment between the filter rod and the filter screen, and ensuring the directional cleaning of the filter screen, thereby further improving the convenience of using the system for efficient and energy-saving VOC removal.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of the buffer bin and multiple deodorization bins can realize the stable deodorization operation of plastic particles. It is not necessary for one deodorization bin to deodorize plastic particles while another deodorization bin is feeding or discharging materials. It ensures that multiple deodorization bins can deodorize plastic particles at the same time, thereby improving the utilization efficiency of the deodorization bins; 2. The setting of the cooling bin. When the plastic particles in the cooling bin are cooled down, the valve body is opened, and the cooled plastic particles are discharged from the cooling bin and packaged, so as to realize the storage of the plastic particles; 3. Heat exchanger 1, return air duct and fan 1 are set up. Natural air and high-temperature air exchange heat in heat exchanger 1 to achieve heating of natural air. The heated natural air enters the buffer bin to heat the plastic particles, thereby preheating the plastic particles in the buffer bin, thereby improving the deodorization efficiency of the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view of the vacuum hopper in the embodiment of the present application.

[0028] Figure 3 yes Figure 2 The enlarged view of point A in the middle shows the filter components.

[0029] Explanation of reference numerals: 1. Cache; 2. Cooling; 3. Deodorizing; 4. Valve body 1; 5. Circulation component; 51. Heat exchanger 1; 52. Fan 1; 53. Return air duct; 54. Air filter; 55. Heat exchanger 2; 56. Fan 2; 57. Heating pipe; 6. High level meter; 7. Weighing module; 8. Exhaust duct; 9. Vacuum hopper; 91. Hopper; 92. Vacuum pump; 93. Air outlet channel; 94. Connecting chamber; 10. Cleaning Management component; 101, reciprocating screw rod; 102, cleaning ring; 103, ventilation hood; 104, air inlet duct; 105, air outlet duct; 11, transmission component; 111, transmission impeller; 112, synchronous wheel; 113, synchronous belt; 12, connecting pipe; 13, filter component; 131, cam; 132, filter net; 1321, filter hole; 133, filter plate; 1331, sieve hole; 134, elastic member 1; 135, filter rod. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a system for removing VOCs with high efficiency and energy saving. Figure 1 A system for removing VOCs with high efficiency and energy saving comprises a buffer bin 1, a cooling bin 2 and a plurality of deodorization bins 3. The number of the deodorization bins 3 may be two, three or more. In the embodiment of the present application, the number of the deodorization bins 3 is two. The buffer bin 1 is used to store plastic particles. The discharge end of the buffer bin 1 is connected with the feed ends of the two deodorization bins 3 in sequence through a pipeline. The feed end of the cooling bin 2 is connected with the discharge ends of the two deodorization bins 3 in sequence through a pipeline. A negative pressure Roots blower is installed in the pipeline. The negative pressure Roots blower drives the plastic particles in the two deodorization bins 3 into the cooling bin 2 through the pipeline. The cooling bin 2 cools the plastic particles. A valve body 4 is installed at the discharge end of the cooling bin 2. The valve body 4 can control the opening and closing of the discharge end of the cooling bin 2.

[0032] Reference Figure 1 , the plastic particles are transported from the vibrating screening bin to the storage bin through the negative pressure Roots blower, and the plastic particles in the storage bin are filled into the inner cavities of the two deodorizing bins 3 in turn through the pipeline, and the two deodorizing bins 3 perform deodorizing operations on the plastic particles at the same time. When the deodorizing operation of the plastic particles in the deodorizing bin 3 is completed, the negative pressure Roots blower drives the plastic particles in the deodorizing bin 3 to enter the cooling bin 2 from the pipeline. After the cooling bin 2 cools down the plastic particles, the valve body 4 opens, and the plastic particles are discharged from the discharging end of the cooling bin 2. The above operation is repeated, and at the same time, the plastic particles stably enter the storage bin from the vibrating screening bin through the negative pressure Roots blower, so that the two deodorizing bins 3 can perform deodorizing operations on the plastic particles stably, and there is no need for one deodorizing bin 3 to deodorize the plastic particles while the other deodorizing bin 3 is feeding or discharging, so as to ensure that the multiple deodorizing bins 3 can deodorize the plastic particles at the same time, thereby improving the utilization efficiency of the deodorizing bins 3.

[0033] Reference Figure 1 A circulation component 5 is installed between the buffer bin 1 and the deodorization bin 3, and the circulation component 5 can recycle the high-temperature air discharged from the deodorization bin 3; the circulation component 5 includes a heat exchanger 1 51, a return air duct 53, a fan 1 52, an air filter element 54, a heat exchanger 2 55, a fan 2 56 and a heating pipe 57. In the embodiment of the present application, the heat exchanger 1 51 and the heat exchanger 2 55 have two air inlet ends and two air outlet ends, one end of the return air duct 53 is installed at the air outlet end of the deodorization bin 3, and the other end of the return air duct 53 is installed at one of the air inlet ends of the heat exchanger 1 51, and one of the air outlet ends of the heat exchanger 1 51 is provided for the installation of an external exhaust gas duct The air filter 54 and the second heat exchanger 55 are installed on the return air duct 53 at intervals. The air filter 54 is located between the second heat exchanger 55 and the deodorization chamber 3. The air filter 54 can filter moisture in the high-temperature air. One of the air inlet ends of the second heat exchanger 55 faces the air filter 54, and one of the air outlet ends of the second heat exchanger 55 faces the first heat exchanger 51. The high-temperature air in the deodorization chamber 3 passes through the air filter 54, the second heat exchanger 55 and the first heat exchanger 51 in turn and is discharged from the external exhaust pipe, so that the high-temperature air in the deodorization chamber 3 is not easily discharged into the environment, thereby ensuring that the surrounding environment is not easily polluted, thereby reflecting the concept of environmental protection.

[0034] Reference Figure 1The other air inlet end of heat exchanger 51 is used for natural air, the air inlet end of fan 52 is installed at the other air outlet end of heat exchanger 51 through a pipeline, and the air outlet end of fan 52 is installed at the air inlet end of cache bin 1 through a pipeline. Fan 52 drives natural air to enter cache bin 1 through heat exchanger 51, and at the same time, natural air and high-temperature air exchange heat in heat exchanger 51 to achieve heating of natural air. The heated natural air enters cache bin 1 to heat the plastic particles, thereby preheating the plastic particles in cache bin 1 and reducing the energy consumption of deodorization bin 3, thereby reflecting the concept of energy saving.

[0035] Reference Figure 1 The other air inlet end of the heat exchanger 55 is for natural air to pass in, and the other air outlet end of the heat exchanger 55 is installed at the air inlet end of the fan 56 through a pipeline. The air outlet end of the fan 56 is installed at the air inlet end of the heating pipe 57 through a pipeline, and the air outlet end of the heating pipe 57 is installed at the air inlet end of the deodorization bin 3 through a pipeline; the fan 56 drives the natural air to pass through the heat exchanger 55 and the heating pipe 57 in sequence and enter the deodorization bin 3, and the natural air and the high-temperature air exchange heat in the heat exchanger 55 to realize preheating of the natural air, and the initially heated natural air passes into the heating pipe 57, and the heating pipe 57 heats the initially heated natural air, and the heated natural air enters the deodorization bin 3 through the pipeline to heat and dry the plastic particles.

[0036] Reference Figure 1 The cache bin 1 and the deodorization bin 3 are both installed with a high material level meter 6, which is used to measure the storage height of the plastic particles in the cache bin 1 and the deodorization bin 3, so as to ensure the storage stability of the plastic particles in the cache bin 1 and the deodorization bin 3; the inner wall of the cache bin 1 and the inner wall of the deodorization bin 3 are both installed with a weighing module 7, which can accurately measure the weight of the plastic particles in the cache bin 1 and the deodorization bin 3, so as to improve the operating accuracy of the system for efficient and energy-saving VOC removal.

[0037] Reference Figure 1 A diffuser is installed on the inner wall of the buffer bin 1, and the diffuser promotes the air flow in the buffer bin 1. The heated natural air is in full contact with the plastic particles and performs heat exchange, thereby increasing the residence time of the heated natural air in the buffer bin 1 and realizing the insulation function of the buffer bin 1; an exhaust duct 8 is installed at the air outlet end of the buffer bin 1, and the end of the exhaust duct 8 away from the air outlet end of the buffer bin is provided for the installation of an external exhaust gas duct. After the air in the buffer bin 1 is in full contact with the plastic particles, it is discharged from the external exhaust gas duct through the exhaust duct 8, thereby realizing unified treatment of the air, making it difficult for the exhaust gas to pollute the environment, thereby reflecting the concept of environmental protection.

[0038] Reference Figure 1 and Figure 2A vacuum hopper 9 is installed at the feed end of the buffer bin 1. The vacuum hopper 9 includes a hopper portion 91 and a vacuum pump 92. The hopper portion 91 is installed at the feed end of the buffer bin 1. The vacuum pump 92 is installed on the surface of the hopper portion 91. An air outlet channel 93 is opened on the inner wall of the hopper portion 91. The air outlet channel 93 is connected to the air inlet end of the vacuum pump 92. The vacuum pump 92 can extract air from the inner cavity of the hopper portion 91 through the air outlet channel 93. The discharge end of the hopper portion 91 faces the feed end of the buffer bin 1. Plastic particles enter the hopper portion 91 from the vibrating screening bin through the negative pressure Roots blower. The plastic particles in the hopper portion 91 enter the inner cavity of the buffer bin 1 from the feed end of the buffer bin 1, thereby realizing a stable supply of plastic particles in the buffer bin 1.

[0039] Reference Figure 1 and Figure 2 The bucket 91 is equipped with a cleaning assembly 10, which can scrape off plastic particles adhered to the inner wall of the bucket 91. The cleaning assembly 10 includes a reciprocating screw 101, a cleaning ring 102, a ventilation hood 103, an air inlet duct 104 and an air outlet duct 105. The reciprocating screw 101 is rotatably connected to the inner wall of the bucket 91, and the cleaning ring 102 is threadedly connected to the outer wall of the reciprocating screw 101. The cleaning ring 102 slides on the inner wall of the bucket 91 along the axis of the reciprocating screw 101, and the cleaning end of the cleaning ring 102 presses against the inner wall of the bucket 91 and scrapes off the plastic particles, driving the plastic particles from the discharge end of the bucket 91 into the feed end of the buffer bin 1, so that the plastic particles are not easily adhered to the inner wall of the bucket 91, thereby ensuring the stability of the plastic particles transported to the buffer bin 1.

[0040] Reference Figure 1 and Figure 2 The ventilation hood 103 is fixed to the outer peripheral surface of the bucket portion 91 by bolts, and the inner cavity of the ventilation hood 103 surrounds the outer peripheral surface of the bucket portion 91. One end of the air inlet duct 104 is fixed to the surface of the ventilation hood 103 by a flange, and the other end of the air inlet duct 104 is connected to the return air duct 53. The high-temperature air in the return air duct 53 can enter the inner cavity of the ventilation hood 103 through the air inlet duct 104. The high-temperature air in the ventilation hood 103 exchanges heat with the outer peripheral surface of the bucket portion 91 to achieve the heating of the bucket portion 91. The heated bucket portion 91 heats and dries the plastic particles, thereby further achieving the pre-drying of the plastic particles in the bucket portion 91.

[0041] Reference Figure 1 and Figure 2One end of the air outlet duct 105 is fixed to the surface of the ventilation hood 103 through a flange, and the other end of the air outlet duct 105 is provided for installation of an external exhaust gas duct. The high-temperature air in the ventilation hood 103 can be discharged from the external exhaust gas duct through the air outlet duct 105, thereby realizing unified treatment of the exhaust gas; a transmission assembly 11 is installed between the ventilation hood 103 and the reciprocating screw rod 101, and the transmission assembly 11 can drive the reciprocating screw rod 101 to rotate. The transmission assembly 11 includes a transmission impeller 111, two synchronous wheels 112 and a synchronous belt 113 used in conjunction with the synchronous wheel 112. The transmission impeller 111 is rotatably connected to the inner wall of the ventilation hood 103, and the air outlet end of the air inlet duct 104 faces the blades of the transmission impeller 111, and the axis of the transmission impeller 111 and The axes of the reciprocating screw 101 are parallel to each other, and a connecting cavity 94 is provided on the surface of the bucket 91 facing the transmission impeller 111. The end of the reciprocating screw 101 rotates on the inner wall of the connecting cavity 94, one of the synchronous wheels 112 is coaxially fixed on the rotating shaft of the transmission impeller 111, and the other synchronous wheel 112 is coaxially fixed on the reciprocating screw 101, and the synchronous belt 113 is tensioned to connect the two synchronous wheels 112; when high-temperature air enters the inner cavity of the ventilation hood 103 through the air inlet duct 104 and impacts the blades of the transmission impeller 111, the transmission impeller 111 rotates, driving the reciprocating screw 101 to rotate on the inner wall of the connecting cavity 94, and no external power device is required to drive the reciprocating screw 101 to rotate, thereby reducing energy loss and reflecting the concept of energy saving.

[0042] Reference Figure 2 and Figure 3 A connecting pipe 12 is fixed on the surface of the ventilation hood 103 through a flange. The inner cavity of the connecting pipe 12 faces the blades of the transmission impeller 111. The end of the connecting pipe 12 away from the ventilation hood 103 is installed with the air outlet end of the vacuum pump 92 through a flange. The vacuum pump 92 drives the air in the bucket 91 into the inner cavity of the ventilation hood 103 from the connecting pipe 12 and impacts the blades of the transmission impeller 111, driving the transmission impeller 111 to rotate, thereby ensuring the stability of the rotation of the transmission impeller 111.

[0043] Reference Figure 2 and Figure 3The bucket 91 is equipped with a filter assembly 13, which can filter the air in the bucket 91. The filter assembly 13 includes a cam 131, a filter screen 132, a filter plate 133, an elastic member 134 and a plurality of filter rods 135. The filter screen 132 is fixed to the inner wall of the air outlet channel 93. The filter screen 132 has a plurality of filter holes 1321. The filter screen 132 can filter impurities in the air; the end of the rotating shaft of the driving impeller 111 is sequentially penetrated by the outer wall of the ventilation cover 103 and the outer wall of the bucket 91 and is located in the air outlet channel 93. The cam 131 is fixed to the end of the driving impeller 111 located at the air outlet channel 93. The elastic member 134 can be a compression spring or a tension spring. The implementation of this application In the example, the elastic member 134 is a compression spring with a certain deformation ability. One end of the elastic member 134 in the elastic direction is fixed to the inner wall of the air outlet channel 93, and the other end of the elastic member 134 in the elastic direction is fixed to the surface of the filter plate 133. The elastic force of the elastic member 134 drives the surface of the filter plate 133 to press against the wheel surface of the cam 131, and the wheel surface of the cam 131 has a tendency to roll in contact with the surface of the filter plate 133. The filter plate 133 has a plurality of sieve holes 1331, and the filter plate 133 can filter impurities in the air. A plurality of filter rods 135 are fixed at intervals on the surface of the filter plate 133 facing the filter net 132, and the filter rods 135 correspond one by one to the filter holes 1321 on the filter plate 133.

[0044] Reference Figure 2 and Figure 3 The cam 131 has a large end and a small end. When the small end of the cam 131 abuts against the surface of the filter plate 133, the filter plate 133 is driven to slide along the inner wall of the air outlet flow channel 93 in the direction close to the filter screen 132. The filter rod 135 corresponds to and is embedded in the filter holes 1321 on the filter screen 132 one by one. The filter rod 135 scrapes off the impurities on the inner walls of the filter holes 1321 on the filter screen 132, thereby achieving directional cleaning of the filter screen 132; when the small end of the cam 131 abuts against the surface of the filter plate 133, the filter plate 133 is driven to slide along the inner wall of the air outlet flow channel 93 in the direction away from the filter screen 132, and the end of the filter rod 135 is separated from the filter holes 1321 on the filter screen 132, thereby achieving the detachment between the filter rod 135 and the filter screen 132, thereby ensuring the directional cleaning of the filter screen 132, thereby further improving the ease of use of the system for efficient and energy-saving VOC removal. The implementation principle of the system for efficient and energy-saving VOC removal in the embodiment of the present application is as follows: plastic particles are transported from the vibrating screening bin to the storage bin through the negative pressure Roots blower, and the plastic particles in the storage bin are filled into the inner cavities of the two deodorizing bins 3 in turn through the pipeline, and the two deodorizing bins 3 perform deodorizing operations on the plastic particles at the same time. When the deodorizing operation of the plastic particles in the deodorizing bin 3 is completed, the negative pressure Roots blower drives the plastic particles in the deodorizing bin 3 to enter the cooling bin 2 from the pipeline. After the cooling bin 2 cools down the plastic particles, the valve body 4 opens, and the plastic particles are discharged from the discharge end of the cooling bin 2. The above operation is repeated, and at the same time, the plastic particles stably enter the storage bin from the vibrating screening bin through the negative pressure Roots blower, so that the two deodorizing bins 3 perform deodorizing operations on the plastic particles stably, and there is no need for one deodorizing bin 3 to deodorize the plastic particles while the other deodorizing bin 3 is feeding or discharging, so as to ensure that the multiple deodorizing bins 3 deodorize the plastic particles at the same time, thereby improving the utilization efficiency of the deodorizing bins 3.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A highly efficient and energy-saving VOC removal system, characterized by: It comprises a buffer bin (1) and a plurality of deodorizing bins (3); the inner cavity of the buffer bin (1) is used to store plastic particles; the discharge end of the buffer bin (1) is connected to the feed ends of the plurality of deodorizing bins (3) in sequence through pipelines.

2. A highly efficient and energy-saving VOC removal system according to claim 1, characterized in that: It also comprises a cooling bin (2), wherein the feeding end of the cooling bin (2) is connected to the discharging ends of the plurality of deodorizing bins (3) in sequence through a pipeline, the pipeline being connected to a negative pressure Roots blower, the negative pressure Roots blower drives the plastic particles in the deodorizing bin (3) to enter the cooling bin (2) through the pipeline, the cooling bin (2) cools the plastic particles, the discharging end of the cooling bin (2) is connected to a valve body 1 (4), the valve body 1 (4) being able to control the opening and closing of the discharging end of the cooling bin (2).

3. The system for removing VOCs with high efficiency and energy saving according to claim 1, characterized in that: A circulation component (5) is connected between the buffer chamber (1) and the deodorizing chamber (3), and the circulation component (5) comprises a heat exchanger (51), a return air duct (53) and a fan (52). One end of the return air duct (53) is connected to the air outlet of the deodorizing chamber (3), and the other end of the return air duct (53) is connected to one of the air inlet ends of the heat exchanger (51). The air in the deodorizing chamber (3) enters the heat exchanger (51) through the return air duct (53). The other air inlet end of the heat exchanger (51) is used for natural air to enter. The air inlet end of the fan (52) is connected to one of the air outlet ends of the heat exchanger (51), and the air outlet end of the fan (52) is connected to the air inlet end of the buffer chamber (1). The fan (52) drives the natural air to pass through the heat exchanger (51) and enter the buffer chamber (1). The other air outlet end of the heat exchanger (51) is used for connection with an external exhaust air duct.

4. A highly efficient and energy-saving VOC removal system according to claim 3, characterized in that: The circulation component (5) further comprises an air filter element (54), a second heat exchanger (55), a second fan (56) and a heating pipe (57). The air filter element (54) and the second heat exchanger (55) are connected to the return air duct (53) at intervals. The air in the deodorizing chamber (3) passes through the air filter element (54) and the second heat exchanger (55) in sequence and enters the first heat exchanger (51). The air filter element (54) can filter moisture in the air. The air inlet end of the second fan (56) is connected to the air outlet end of the second heat exchanger (55). The air outlet end of the second fan (56) is connected to the air inlet end of the heating pipe (57). The air outlet end of the heating end is connected to the air inlet end of the deodorizing chamber (3). The second fan (56) drives natural air to pass through the second heat exchanger (55) and the heating pipe (57) in sequence and enter the deodorizing chamber (3).

5. The system for removing VOCs with high efficiency and energy saving according to claim 3 is characterized in that: The air outlet end of the buffer chamber (1) is connected to an exhaust duct (8), and the exhaust duct (8) is connected to an external exhaust gas duct.

6. The system for removing VOCs with high efficiency and energy saving according to claim 3 is characterized in that: The inner wall of the buffer chamber (1) is connected to a diffuser, and the diffuser promotes the flow of air in the buffer chamber (1).

7. The system for removing VOCs with high efficiency and energy saving according to claim 4, characterized in that: The feed end of the buffer bin (1) is connected to a vacuum hopper (9); plastic particles enter the vacuum hopper (9) from the vibrating screening bin through a negative pressure Roots blower; the plastic particles in the vacuum hopper (9) enter the inner cavity of the buffer bin (1) from the feed end of the buffer bin (1); the vacuum hopper (9) is connected to a cleaning assembly (10); the cleaning assembly (10) comprises a reciprocating screw (101) and a cleaning ring (102); the reciprocating screw (101) is rotatably connected to the inner cavity wall of the vacuum hopper (9); the cleaning ring (102) is threadedly connected to the outer wall of the reciprocating screw (101); the cleaning end of the cleaning ring (102) is pressed against the inner wall of the vacuum hopper (9) and scrapes off the plastic particles.

8. The system for removing VOCs with high efficiency and energy saving according to claim 7, characterized in that: The cleaning assembly (10) further comprises a ventilation hood (103), an air inlet duct (104) and an air outlet duct (105); the ventilation hood (103) is connected to the outer peripheral surface of the vacuum hopper (9); the inner cavity of the ventilation hood (103) surrounds the outer peripheral surface of the vacuum hopper (9); one end of the air inlet duct (104) is connected to the surface of the ventilation hood (103); the other end of the air inlet duct (104) is connected to the return air duct (53); the high-temperature air in the return air duct (53) enters the inner cavity of the ventilation hood (103) through the air inlet duct (104); one end of the air outlet duct (105) is connected to the surface of the ventilation hood (103); the other end of the air outlet duct (105) is connected to an external exhaust gas duct; the air in the ventilation hood (103) is discharged from the external exhaust gas duct through the air outlet duct (105).

9. The system for removing VOCs with high efficiency and energy saving according to claim 8, characterized in that: A transmission assembly (11) is connected between the ventilation hood (103) and the reciprocating screw (101), and the transmission assembly (11) comprises a transmission impeller (111), at least two synchronous wheels (112) and a synchronous belt (113) used in combination with the synchronous wheels (112); the transmission impeller (111) is rotatably connected to the inner wall of the ventilation hood (103); the air outlet end of the air inlet duct (104) faces the blades of the transmission impeller (111); the axis of the transmission impeller (111) and the axis of the reciprocating screw (101) are parallel to each other; one of the synchronous wheels (112) is coaxially connected to the rotating shaft of the transmission impeller (111); the other synchronous wheel (112) is coaxially connected to the reciprocating screw (101); and the synchronous belt (113) is tensioned to connect the two synchronous wheels (112).

10. The system for removing VOCs with high efficiency and energy saving according to claim 9, characterized in that: The vacuum hopper (9) comprises a hopper portion (91) and a vacuum pump (92). The inner cavity of the hopper portion (91) is used to store plastic particles. The ventilation hood (103) is connected to the surface of the hopper portion (91). The vacuum pump (92) is connected to the surface of the hopper portion (91). The vacuum pump (92) can extract air from the inner cavity of the hopper portion (91). The inner cavity wall of the hopper portion (91) is provided with an air outlet channel (93). The air outlet channel (93) is connected to the air inlet end of the vacuum pump (92). The bucket (91) is connected to a filter assembly (13), the filter assembly (13) comprising a cam (131), a filter screen (132), a filter plate (133), an elastic member (134) and a plurality of filter rods (135), the filter screen (132) being connected to the inner wall of the air outlet channel (93), the filter screen (132) being capable of filtering impurities in the air, the end of the driving impeller (111) being sequentially penetrated by the outer wall of the ventilation hood (103) and the outer wall of the bucket (91) and being located In the air outlet channel (93), the cam (131) is connected to the end of the transmission impeller (111) located in the air outlet channel (93), the elastic member (134) is connected to the inner wall of the air outlet channel (93), the other end of the elastic member (134) in the elastic force direction is connected to the plate surface of the filter plate (133), the elastic member (134) has an elastic force to drive the plate surface of the filter plate (133) to press against the wheel surface of the cam (131), and the plate surface of the filter plate (133) and the cam (131) are connected. 31) wheel surface rolling contact tendency, a plurality of the filter rods (135) are connected at intervals on the surface of the filter plate (133) facing the filter screen (132), the filter rods (135) correspond one-to-one with the filter holes (1321) on the filter screen (132), when the cam (131) drives the filter plate (133) to slide in a direction close to the filter screen (132), the filter rods (135) correspond one-to-one with the filter holes (1321) on the filter screen (132) and are embedded.

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