Continuous purification device for grain drying tail gas
Through the combination of belt purification device and cleaning device, continuous purification and cleaning of grain dry exhaust gas is achieved, and the problems of frequent heat waste and maintenance of traditional equipment are solved, and the treatment efficiency and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202420980640.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-08
AI Technical Summary
Traditional food drying exhaust gas treatment equipment is large in size, resulting in waste of heat and increased costs. At the same time, centrifugal treatment equipment needs to be shut down regularly, affecting the continuous purification efficiency.
The belt purification device is adopted to control the directional movement of the purification belt by driving the roller, and combine the snake-shaped purification area and cleaning device to achieve continuous cleaning and purification of exhaust gas and reduce the frequency of equipment maintenance.
It improves the efficiency and cost-effectiveness of grain drying exhaust gas treatment, reduces heat loss, keeps the surface of the purification belt clean, and cleans simultaneously, reducing the frequency of shutdown and maintenance.
Smart Images
Figure CN222218987U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tail gas treatment, in particular to a continuous purification device for tail gas from grain drying. Background Art
[0002] A large amount of exhaust gas will continue to be produced during the grain drying process. The exhaust gas has a high enthalpy value and contains a large amount of impurities. Some companies will purify the grain drying exhaust gas and recover the waste heat to avoid waste of resources.
[0003] Some companies are able to treat grain drying exhaust gas through centrifugal waste heat recovery equipment. Compared with traditional heat exchange fins, waste heat recovery equipment can continuously treat grain drying exhaust gas and can effectively solve the problem of impurity blockage in the heat exchange fins.
[0004] However, traditional waste heat recovery equipment is large in size and the centrifugal treatment of exhaust gas takes a long time. In this process, the grain drying exhaust gas causes heat waste, affecting the comprehensive benefits of waste heat recovery and increasing the cost of grain drying exhaust gas treatment for enterprises. At the same time, centrifugal treatment equipment still needs to be shut down regularly for manual or machine cleaning, which affects the efficiency of continuous exhaust gas purification treatment. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a continuous purification device for grain drying tail gas, which improves the treatment efficiency of grain drying tail gas and reduces the cost of grain drying tail gas treatment.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A continuous purification device for grain drying exhaust gas, comprising a purification shell, a belt purification device installed inside the purification shell, the belt purification device comprising a plurality of drive rollers and a purification belt sleeved on the outside of the plurality of drive rollers, the directional movement of the purification belt being controlled by the plurality of drive rollers; the purification belt comprising a serpentine purification area, the serpentine purification area comprising a first purification area formed by the outer wall of the purification belt and a second purification area formed by the inner wall of the purification belt, an exhaust gas discharge mechanism facing the outer wall of the purification belt is arranged inside the first purification area, and a cleaning device for cleaning solid impurities on the outer wall of the purification belt is also arranged on the outer wall of the second purification area.
[0008] Preferably, the cleaning device comprises a supporting roller located at one side of the inner wall of the purification belt, and a cleaning roller located at one side of the outer wall of the purification belt, and a material guide baffle is arranged below the cleaning roller.
[0009] Preferably, the exhaust gas emission mechanism comprises an exhaust gas emission pipe arranged inside the first purification area, and an exhaust opening is opened on the exhaust gas emission pipe.
[0010] Preferably, the first purification area comprises a first top wall, a first bottom wall and a first side wall, and a squeezing device is provided at the first side wall.
[0011] Preferably, the squeezing device comprises a first squeezing roller located inside the purification belt and a second squeezing roller located outside the purification belt.
[0012] Preferably, a liquid suction device is installed between the first squeezing roller and the second squeezing roller.
[0013] Preferably, sealing devices are installed between the two sides of the purification belt and the inner wall of the purification shell.
[0014] Preferably, the sealing device comprises a first sealing portion fixed to the outside of the purification belt, and a second sealing portion sleeved on the outside of the first sealing portion is fixed to the inner wall of the purification housing.
[0015] Preferably, an exhaust pipe is fixed to the upper end of the purification housing, and an electromagnetic valve is installed inside the exhaust pipe.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] The continuous movement of the purification belt can continuously clean the grain drying exhaust gas. The cleaning device can keep the surface of the purification belt clean and tidy, ensuring the continuous treatment effect of the exhaust gas. The overall structure is compact and simple, the flow path of the exhaust gas is short, the heat loss is small, and the exhaust gas purification and purification belt cleaning are carried out simultaneously. The deposition rate of solid impurities on the surface of the purification belt is low, the overall equipment shutdown frequency is low, and the grain drying exhaust gas treatment effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the internal structure of the utility model.
[0019] Figure 2 For this utility model Figure 1 Schematic diagram of the main structure.
[0020] Figure 3 It is a structural schematic diagram of the sealing device of the utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the utility model in the installation state.
[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the main structure.
[0023] In the figure: 100, grain drying chamber; 110, angular box; 200, air intake chamber; 300, circulation device; 400, grain drying exhaust gas continuous purification device; 410, purification shell; 420, exhaust duct; 430, sealing device; 431, first sealing part; 432, second sealing part; 500, belt purification device; 510, purification belt; 520, driving roller; 530, first purification area; 531, first top wall; 532, first side wall; 533, first bottom wall; 540, second purification area; 541, second top wall; 542, second side wall; 543, second bottom wall; 600, exhaust gas discharge mechanism; 700, cleaning device; 710, cleaning roller; 720, supporting roller; 730, material guide baffle; 800, extrusion device; 810, first extrusion roller; 820, second extrusion roller; 900, grain lifting device. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.
[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0026] A large amount of exhaust gas will continue to be produced during the grain drying process. The exhaust gas has a high enthalpy value and contains a large amount of impurities. Some companies will purify the grain drying exhaust gas and recover the waste heat to avoid waste of resources.
[0027] Some companies are able to treat grain drying exhaust gas through centrifugal waste heat recovery equipment. Compared with traditional heat exchange fins, waste heat recovery equipment can continuously treat grain drying exhaust gas and can effectively solve the problem of impurity blockage in the heat exchange fins.
[0028] However, traditional waste heat recovery equipment is large in size and the centrifugal treatment of exhaust gas takes a long time. In this process, the grain drying exhaust gas causes heat waste, affecting the comprehensive benefits of waste heat recovery and increasing the cost of grain drying exhaust gas treatment for enterprises. At the same time, centrifugal treatment equipment still needs to be shut down regularly for manual or machine cleaning, which affects the efficiency of continuous exhaust gas purification treatment.
[0029] In order to solve the above problems, refer to the attached Figure 1 -Attached Figure 3 The continuous purification device for grain drying exhaust gas includes a purification shell 410, and a belt purification device 500 is installed inside the purification shell 410. The belt purification device 500 can continuously purify the exhaust gas; specifically, the belt purification device 500 includes a plurality of driving rollers 520 and a purification belt 510 sleeved on the outside of the plurality of driving rollers 520, and the directional movement of the purification belt 510 is controlled by the plurality of driving rollers 520; the grain drying exhaust gas continuously flows out from a predetermined position and directly acts on the surface of the purification belt 510. The purification belt 510 has a certain filtering effect and can collect solid impurities in the exhaust gas to achieve purification of the grain drying exhaust gas.
[0030] Specifically, the purification belt 510 includes a serpentine purification area, which includes a first purification area 530 formed by the outer wall of the purification belt 510 and a second purification area 540 formed by the inner wall of the purification belt 510. An exhaust gas discharge mechanism 600 facing the outer wall of the purification belt 510 is arranged inside the first purification area 530, and the outer wall of the second purification area 540 is also provided with a cleaning device 700 for cleaning solid impurities on the outer wall of the purification belt 510. The exhaust gas discharge mechanism 600 continuously sprays the grain drying exhaust gas toward the purification belt 510, and the solid impurities are attached to the outer surface of the purification belt 510, so as to purify the grain drying exhaust gas; at the same time, the purification belt 510 with solid impurities attached moves to the side of the cleaning device 700, and the surface of the purification belt 510 is continuously cleaned by the cleaning device 700, so as to keep the surface of the purification belt 510 clean, and realize continuous cleaning of the grain drying exhaust gas during the circulation of the purification belt 510.
[0031] It should be noted here that the first purification area 530 and the second purification area 540 can be alternately set to multiple, and the number of exhaust gas emission mechanisms 600 and cleaning devices 700 set is consistent with the number of first purification areas 530, thereby realizing multi-area exhaust gas purification and cleaning of solid impurities attached to the surface of the purification belt 510, further improving the effect of exhaust gas treatment.
[0032] In summary, the continuous movement of the purification belt 510 can continuously clean the grain drying exhaust gas, and the cleaning device 700 can keep the surface of the purification belt 510 clean and tidy, thereby ensuring the continuous treatment effect of the exhaust gas. The overall structure is compact and simple, the flow path of the exhaust gas is short, the heat loss is small, and the exhaust gas purification and cleaning of the purification belt 510 are carried out simultaneously. The deposition rate of solid impurities on the surface of the purification belt 510 is low, the overall equipment shutdown frequency for maintenance is low, and the grain drying exhaust gas treatment effect is good.
[0033] The cleaning device 700 here includes a support roller 720 located on one side of the inner wall of the purification belt 510, and a cleaning roller 710 located on one side of the outer wall of the purification belt 510. A material guide baffle 730 is arranged under the cleaning roller 710. The support roller 720 can be set in multiple numbers. The purification belt 510 is sleeved on the outside of multiple support rollers 720 to control the outer side of the purification belt 510 to protrude outward. During the continuous rotation of the cleaning roller 710, the solid impurities deposited on the outer surface of the purification belt 510 are cleaned, and the solid impurities fall on the surface of the material guide baffle 730, thereby realizing the centralized discharge of the solid impurities.
[0034] The exhaust gas emission mechanism 600 here includes an exhaust gas emission pipe arranged inside the first purification area 530, and an exhaust opening is opened on the top of the exhaust gas emission pipe. The exhaust opening is arranged upward, and the exhaust gas can move upward and directly act on the outer surface of the purification belt 510. The gas passes through the purification belt 510 or flows in a directional manner toward other positions to achieve solid-gas separation.
[0035] Specifically, the first purification area 530 includes a first top wall 531, a first bottom wall 533 and a first side wall 532. An extrusion device 800 is provided at the first side wall 532. The extrusion device 800 can be used to squeeze solid impurities on the surface of the purification belt 510 and squeeze out the internal moisture. The moisture content inside the overall purification device is convenient for the subsequent cleaning of solid impurities, and can reduce the water vapor content in the purification shell 410, so as to facilitate the subsequent drying and reheating of the exhaust gas, thereby improving the comprehensive treatment efficiency of the exhaust gas.
[0036] As a preferred extrusion method, the extrusion device 800 here includes a first extrusion roller 810 located on the inner side of the purification belt 510 and a second extrusion roller 820 located on the outer side of the purification belt 510. During the directional rotation of the first extrusion roller 810 and the second extrusion roller 820, the surface of the purification belt 510 can be squeezed, and the outer side of the purification belt 510 is in a concave state, which can improve the extrusion treatment effect on solid impurities.
[0037] A liquid suction device is installed between the first squeezing roller 810 and the second squeezing roller 820, through which the squeezed liquid can be discharged in time to avoid the squeezed liquid from remixing with solid impurities on the surface of the purification belt 510; the liquid suction device here can be arranged below the second squeezing roller 820 and selected as a suction pipe to extract the liquid in time.
[0038] A sealing device 430 is installed between the two sides of the purification belt 510 and the inner wall of the purification shell 410. The sealing device 430 can form a sealed barrier on both sides of the purification belt 510, and can seal the exhaust gas to avoid blockage in the continuous grain drying exhaust gas purification device 400, thereby reducing the failure rate of structures such as the continuous grain drying exhaust gas purification device 400 and the belt purification device 500, and also improves the exhaust gas treatment effect.
[0039] As a preferred sealing method, the sealing device 430 here includes a first sealing portion 431 fixed to the outside of the purification belt 510, and a second sealing portion 432 is fixed to the inner wall of the purification shell 410 and is sleeved on the outside of the first sealing portion 431. The first sealing portion 431 and the second sealing portion 432 can both be selected to be curved strips, and the curved shape is consistent with the curved shape of the purification belt 510. A curved sealing channel can be formed between the first sealing portion 431 and the second sealing portion 432 to avoid leakage of exhaust gas.
[0040] An exhaust pipe 420 is fixed at the upper end of the purification shell 410, and an electromagnetic valve is installed inside the exhaust pipe 420. A humidity detector is installed in the purification shell 410. When the humidity and pressure in the purification shell 410 are too high, the electromagnetic valve can be opened to quickly discharge the gas in the purification shell 410, thereby reducing the humidity and pressure of the exhaust gas in the purification shell 410, ensuring the stability and reliability of the overall structure and ensuring the continuous treatment effect of the exhaust gas.
[0041] Please refer to the attached Figure 4 , Attachment Figure 5 The grain drying exhaust gas continuous purification device 400 can be directly installed on the first side of the grain drying chamber 100. The outside of the grain drying chamber 100 is also equipped with an air intake chamber 200, a circulation device 300, a grain lifting device 900 and other structures. The circulation device 300 controls the drying gas to enter the grain drying chamber 100 from the air intake chamber 200. The dried exhaust gas in the grain drying chamber 100 is discharged from the continuous grain drying exhaust gas purification device 400. The dry exhaust gas is purified in the continuous grain drying exhaust gas purification device 400, and the exhaust gas is dried and then heated by the circulation device 300, and re-circulated into the air intake chamber 200 to realize the circulating drying of the grain. The purified and dried exhaust gas has a certain initial temperature, which reduces the heating loss of the circulation device 300 and reduces the resource loss in the grain drying process.
[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A continuous purification device for grain drying tail gas, comprising a purification housing (410), wherein a belt-type purification device (500) is installed inside the purification housing (410), characterized in that: The belt-type purification device (500) comprises a plurality of driving rollers (520) and a purification belt (510) sleeved on the outside of the plurality of driving rollers (520), and the directional movement of the purification belt (510) is controlled by the plurality of driving rollers (520); the purification belt (510) comprises a serpentine purification area, the serpentine purification area comprises a first purification area (530) formed by the outer wall of the purification belt (510) and a second purification area (540) formed by the inner wall of the purification belt (510); an exhaust gas discharge mechanism (600) facing the outer wall of the purification belt (510) is arranged inside the first purification area (530), and a cleaning device (700) for cleaning solid impurities on the outer wall of the purification belt (510) is also arranged on the outer wall of the second purification area (540).
2. The grain drying tail gas continuous purification device according to claim 1, characterized in that: The cleaning device (700) comprises a support roller (720) located on one side of the inner wall of the cleaning belt (510), and a cleaning roller (710) located on one side of the outer wall of the cleaning belt (510), wherein a material guide baffle (730) is arranged below the cleaning roller (710).
3. The grain drying tail gas continuous purification device according to claim 1, characterized in that: The exhaust gas emission mechanism (600) comprises an exhaust gas emission pipe arranged inside the first purification area (530), and an exhaust opening is formed on the top of the exhaust gas emission pipe.
4. The grain drying tail gas continuous purification device according to claim 1, characterized in that: The first purification area (530) comprises a first top wall (531), a first bottom wall (533), and a first side wall (532), and an extrusion device (800) is provided at the first side wall (532).
5. The grain drying tail gas continuous purification device according to claim 4, characterized in that: The squeezing device (800) comprises a first squeezing roller (810) located inside the purification belt (510) and a second squeezing roller (820) located outside the purification belt (510).
6. The grain drying tail gas continuous purification device according to claim 5, characterized in that: A liquid suction device is installed between the first squeezing roller (810) and the second squeezing roller (820).
7. The grain drying tail gas continuous purification device according to claim 1, characterized in that: Sealing devices (430) are installed between the two sides of the purification belt (510) and the inner wall of the purification housing (410).
8. The grain drying tail gas continuous purification device according to claim 7, characterized in that: The sealing device (430) comprises a first sealing portion (431) fixed to the outside of the purification belt (510), and a second sealing portion (432) sleeved on the outside of the first sealing portion (431) is fixed to the inner wall of the purification housing (410).
9. The grain drying tail gas continuous purification device according to claim 1, characterized in that: An exhaust pipe (420) is fixed to the upper end of the purification housing (410), and an electromagnetic valve is installed inside the exhaust pipe (420).