Variable tempering circulating type grain drying equipment
By dividing the tempering section of a traditional circulating dryer into two tempering sections and one drying section, and by adopting a variable drying-tempering ratio, the problem of low efficiency in high-moisture rice drying equipment is solved, achieving efficient and low-cost rice drying.
Patent Information
- Application Number
- CN202520285013.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing high-moisture rice drying equipment suffers from low drying efficiency, long drying time, and high equipment cost.
The tempering section of a traditional circulating dryer is divided into two tempering sections and one drying section. A variable drying tempering ratio is adopted, and the hot air supply is controlled to achieve the alternating use of hot air in different drying sections, thereby improving drying efficiency and reducing drying time.
It improves drying efficiency, reduces drying time, and at the same time ensures the quality of dried rice and reduces equipment costs.
Smart Images
Figure CN223954572U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of grain drying, and particularly relates to a variable slow cycle type grain drying equipment, which is especially suitable for drying high-moisture rice. BACKGROUND
[0002] The commonly used drying equipment for high-moisture rice is a circulating dryer. Since the high-moisture rice is prone to cracking during the drying process, drying and slow drying (without heating, so that the moisture of the grains is fully balanced) need to be alternately performed to reduce the stress on the grains and lower the cracking rate. In one cycle in the circulating dryer, the rice passes through a drying section, and the moisture on the surface of the rice is evaporated by being heated by high-temperature air in the drying section. Then, the rice enters a slow drying section, and the moisture diffuses from the inside of the rice to the surface. However, the current high-moisture rice drying equipment has a fixed drying and slow drying ratio (the traditional circulating dryer only includes one drying section and one slow drying section, wherein the drying section is relatively short, and the slow drying section is relatively long). That is, the size of the drying section and the slow drying section is fixed and cannot be changed. Although the cracking rate is relatively low, the drying efficiency is too low, the drying time is increased, and the cost of the equipment is increased. SUMMARY
[0003] The utility model discloses a kind of variable slow cycle type grain drying equipment to solve the problem of low efficiency of fixed drying slow drying ratio circulating dryer and long drying time, and the drying efficiency is improved by changing fixed drying slow drying ratio into variable drying slow drying ratio, to reduce drying time, while ensuring rice drying quality.
[0004] To achieve the above object, the technical scheme adopted is as follows:
[0005] The utility model provides a kind of variable slow cycle type grain drying equipment, comprising:
[0006] The grain inlet elevator is provided with a grain inlet at the lower end;
[0007] The drying machine main body is communicated with the grain outlet of the grain inlet elevator at the upper end, and the drying machine main body includes at least two slow drying sections and at least two drying sections arranged alternately upwards and downwards, and a grain discharging mechanism at the bottom end;
[0008] The grain outlet auger is located directly below the grain discharging mechanism, and the grain outlet of the grain outlet auger is communicated with the grain inlet of the grain inlet elevator;
[0009] And heat source provides hot air for drying section, and variable drying slow drying ratio is realized by controlling the hot air supply of different drying sections.
[0010] The utility model discloses variable slow drying circulation type grain drying equipment, further, the drying machine main part contains the first slow drying section, the first drying section, the second slow drying section and the second drying section from top to bottom arrangement.
[0011] The utility model discloses variable slow drying circulation type grain drying equipment, further, the first drying section and the second drying section all contain the casing and the upper and lower alternately arranged at least one layer exhaust angle case and at least one layer air inlet angle case in the casing, and the air inlet angle case is communicated with the heat source through the hot air pipeline.
[0012] The utility model discloses variable slow drying circulation type grain drying equipment, further, be provided with electric damper on the hot air pipeline of the first drying section with heat source intercommunication, be used for controlling the heat source to enter the first drying section to change drying slow drying ratio.
[0013] The utility model discloses variable slow drying circulation type grain drying equipment, further, the at least one layer exhaust angle case and at least one layer air inlet angle case staggered arrangement.
[0014] The utility model discloses variable slow drying circulation type grain drying equipment, further, the grain discharging mechanism includes the grain discharging bucket and the grain discharging wheel of pair, the grain discharging wheel sets up at the bottom opening place of grain discharging bucket, and the grain discharging wheel rotates and pushes out the grain in grain discharging bucket.
[0015] The utility model discloses variable slow drying circulation type grain drying equipment, further, the grain discharging mechanism still includes power part, and the power part includes the chain wheel and chain transmission mechanism and motor, and the motor drives the grain discharging wheel rotation through the chain wheel and chain transmission mechanism.
[0016] The utility model discloses variable slow drying circulation type grain drying equipment, further, the heat source adopts coal-fired heat source device, fuel heat source device, gas heat source device, electric heating heat source device, biomass heat source device or solar heat source device.
[0017] Adopt the above technical scheme, the beneficial effect obtained is:
[0018] The utility model sets up two drying sections and two slow drying sections to traditional circulation type drying machine, and two drying sections are connected with heat source through hot air pipeline, and high moisture rice is dried in two drying sections in high moisture section, and in low moisture section, the heat supply to the first drying section is closed, and the second drying section is used to dry, realizes that drying slow drying ratio is variable, compares with traditional circulation type drying machine, improves drying efficiency, reduces drying time, guarantees that the rate of explosion waist does not increase simultaneously, ensures the rice drying quality. ACCURACY OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced hereinafter. Among them, the drawings are only used to show some embodiments of the present application, and not to limit all embodiments of the present application to this.
[0020] Figure 1 is a structural schematic diagram of the variable slow drying circulation type grain drying equipment of the embodiments of the present application;
[0021] Figure 2 is a structural schematic diagram of the grain discharging mechanism of the embodiments of the present application;
[0022] Figure 3 is a structural schematic diagram of the first drying section and the second drying section of the embodiments of the present application.
[0023] The meaning represented by the serial number in the drawing is:
[0024] 1. grain feeding elevator, 2. grain feeding inlet of grain feeding elevator, 301. first slow drying section, 302. first drying section, 303. second slow drying section, 304. second drying section, 305. grain discharging mechanism, 4. grain discharging auger, 5. heat source, 6. hot air pipeline, 7. electric damper, 8. shell, 9. upper exhaust corner box, 10. air inlet corner box, 11. lower exhaust corner box, 12. grain discharging hopper, 13. grain discharging wheel. DETAILED DESCRIPTION
[0025] The example schemes of the embodiments of the present application will be clearly and completely described hereinafter in combination with the drawings of the specific embodiments of the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the persons skilled in the art.
[0026] The whole drying process of the present application is to set the drying slow drying ratio in stages, set a larger drying slow drying ratio in the high moisture section, and set a smaller drying slow drying ratio in the low moisture section. At the beginning of drying, the rice with a water content of about 30% needs a larger drying slow drying ratio. Because the rice has a higher water content, the grain shrinks less, the water passage is smooth, and there is a lot of surface water. The larger drying slow drying ratio can not only improve the drying efficiency, but also will not increase the rate of broken waist, and can ensure the drying quality. When the water content is reduced to about 20%, the drying slow drying ratio is reduced. At this time, the grain moisture can be fully balanced, until the water content of the rice is reduced to about 14%, and the drying is completed.
[0027] Based on the above principle of setting different drying slow drying ratios for different water contents of rice, Figure 1As shown, the embodiment discloses a variable drying and tempering cycle grain drying equipment, which comprises a grain feeding elevator 1, a drying machine main body, a grain discharging auger 4 and a heat source 5. The lower end of the grain feeding elevator 1 is provided with a grain feeding elevator inlet 2. The upper end of the drying machine main body is communicated with the grain outlet of the grain feeding elevator 1, and the drying machine main body comprises at least two tempering sections and at least two drying sections arranged alternately from top to bottom, and a grain discharging mechanism 305 located at the bottom end. The grain discharging auger 4 is located directly below the grain discharging mechanism 305, and the grain discharging outlet of the grain discharging auger 4 is communicated with the grain feeding inlet 2 of the grain feeding elevator. The heat source 5 provides hot air for the drying section, and by controlling the hot air supply of different drying sections, a variable drying and tempering ratio is realized.
[0028] The drying machine main body comprises a first tempering section 301, a first drying section 302, a second tempering section 303 and a second drying section 304 arranged from top to bottom. This design is to retain the drying section of the traditional cycle dryer (i.e. the second drying section 304 of the present scheme), and to divide the tempering section of the traditional cycle dryer into the first tempering section 301, the first drying section 302 and the second tempering section 303, so as to better face the adjustment of the drying and tempering ratio of rice with different moisture contents. The first tempering section 301 and the second tempering section 303 are hollow boxes.
[0029] As shown in the figure, Figure 3 The first drying section 302 and the second drying section 304 each comprise a shell 8 and at least one layer of exhaust angle-shaped boxes and at least one layer of air inlet angle-shaped boxes arranged alternately in the shell 8. According to different models, two rows, three rows, four rows or five rows of angle-shaped boxes can be arranged. Taking three rows of angle-shaped boxes as an example, one layer of upper exhaust angle-shaped boxes 9, one layer of air inlet angle-shaped boxes 10 and one layer of lower exhaust angle-shaped boxes 11 are arranged in the shell 8 from top to bottom. One layer of air inlet angle-shaped boxes 10 is communicated with the heat source 5 through the hot air pipeline 6. The heat source 5 delivers hot air to the air inlet angle-shaped boxes 10 through the hot air pipeline 6. The lower part of the air inlet angle-shaped boxes 10 is an open structure. The hot air comes out from the lower part to heat the grain and take away the moisture. The exhaust gas is discharged to the atmosphere from the upper and lower exhaust angle-shaped pipes.
[0030] An electric damper 7 is arranged on the hot air pipeline 6 communicated with the first drying section 302 and the heat source 5. When the electric damper 7 is open, the heat source 5 simultaneously sends hot air to the first drying section 302 and the second drying section 304. When the electric damper 7 is closed, the hot air supply to the first drying section 302 is stopped, and only the second drying section 304 is supplied with hot air at this time.
[0031] As a preferred, the one layer of upper exhaust angle-shaped boxes 9, the one layer of air inlet angle-shaped boxes 10 and the one layer of lower exhaust angle-shaped boxes 11 are arranged in turn and staggered. In this way, the grain flows in a staggered manner, the drying path of the grain is prolonged, and the overall drying effect of the grain is effectively improved.
[0032] Further, as shown in the figure, Figure 2As shown, the grain discharging mechanism 305 includes pairs of grain discharging hoppers 12 and grain discharging wheels 13, the grain discharging wheels 13 are structured as impellers evenly welded on the shaft in the circumferential direction. In this embodiment, 8 pairs of grain discharging hoppers 12 and grain discharging wheels 13 are arranged. Each grain discharging wheel 13 is arranged at the bottom opening of a grain discharging hopper 12, and the grain discharging wheel 13 rotates to push the grain in the grain discharging hopper 12 out. The grain discharging mechanism 305 further includes a power unit, which includes a chain and sprocket transmission mechanism and an electric motor, and the electric motor drives the grain discharging wheel 13 to rotate through the chain and sprocket transmission mechanism.
[0033] The heat source 5 of the scheme can adopt a coal-fired heat source device (such as a coal-fired hot blast furnace or a coal-fired boiler), an oil-fired heat source device (such as an oil-fired hot blast furnace or an oil-fired boiler), a gas-fired heat source device (such as a gas-fired hot blast furnace or a gas-fired boiler), an electric heating heat source device (such as an electromagnetic heater), a biomass heat source device (such as a biomass hot blast furnace or a biomass boiler), or a solar heat source device (such as a solar heat collector or a solar drying system).
[0034] The working principle of the utility model is as follows:
[0035] The high-moisture rice enters the drying machine main body through the grain inlet 2 of the grain inlet elevator 1, and after the grain is filled, the grain is discharged. The rice evenly falls in the lower grain outlet auger 4 after passing through the grain discharging mechanism 305, and is conveyed to the elevator by the grain outlet auger 4, and then enters the drying machine main body to form a drying cycle.
[0036] At the beginning of high-moisture rice drying, the electric damper 7 on the hot air pipeline 6 is opened, and the two drying sections are dried at the same time. At this time, the high-moisture rice passes through two drying sections and two curing sections, and is continuously dried. After several cycles, the moisture content is reduced to about 20%, and the electric damper 7 is closed. At this time, the first drying section 302 has no hot air entering, and becomes a curing function (without heating, it is a curing function), and only the second drying section 304 has hot air entering, and the process becomes a large curing section and a drying section. Therefore, the drying and curing ratio of the whole process is reduced at this time, and the cycle continues until the target moisture content is reached.
[0037] In the description of the utility model, it should be understood that the expressions of "first", "second" are used to describe the elements of the utility model, and do not mean any order, quantity or importance limitation, but only to distinguish one part from another.
[0038] It should be noted that when an element is described as "connected", "coupled" or "connected" with another element, it can mean that it is directly connected, coupled or connected, but it should be understood that there can be intermediate elements between the two; That is, it covers the position relationship of direct connection and indirect connection.
[0039] It should be noted that the use of "a" or "an", etc., is not necessarily intended to limit the number of elements or articles. By using the term "includes" or "including", etc., similar words or phrases, it is meant to encompass the elements or objects listed after the term, as well as equivalents thereof, without precluding other elements or objects.
[0040] It should be noted that the terms "upper", "lower", "left", "right", etc., indicating the orientation or positional relationship, are only used to represent the relative positional relationship, which is for the convenience of describing the utility model, and the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0041] The preferred embodiments for implementing the utility model have been described in detail above, but it should be understood that the role of these embodiments is only for example, and is not intended to limit the scope, application or structure of the utility model in any way. The scope of protection of the utility model is defined by the appended claims and their equivalents. Those skilled in the art can make many changes to the foregoing embodiments under the guidance of the utility model, and these changes all fall within the scope of protection of the utility model.
Claims
1. A variable-circulation grain drying apparatus, characterized by comprising: The application relates to a grain drying machine, which comprises the following parts: a grain feeding elevator, the lower end of which is provided with a grain feeding elevator grain inlet; a drying machine main body, the upper end of which is communicated with the grain outlet of the grain feeding elevator, the drying machine main body comprises a first slow recovery section, a first drying section, a second slow recovery section and a second drying section arranged from top to bottom, and a grain discharging mechanism at the bottom end; a grain discharging auger, which is located directly below the grain discharging mechanism, and the grain discharging outlet of the grain discharging auger is communicated with the grain feeding elevator grain inlet; and a heat source, which provides hot air for the drying section, and an electric damper is arranged on the hot air pipeline communicated with the first drying section and the heat source, which is used for controlling the heat source to enter the first drying section to change the drying slow recovery ratio.
2. The variable-circulation grain drying apparatus of claim 1, wherein The first drying section and the second drying section both comprise a shell and at least one layer of exhaust angle-shaped boxes and at least one layer of air inlet angle-shaped boxes arranged alternately in the shell; the air inlet angle-shaped boxes are communicated with the heat source through the hot air pipeline.
3. The variable-circulation grain drying apparatus of claim 2, wherein The at least one layer of exhaust angle-shaped boxes and the at least one layer of air inlet angle-shaped boxes are arranged alternately.
4. The variable-circulation grain drying apparatus of claim 1, wherein The grain discharging mechanism comprises a pair of grain discharging hoppers and a grain discharging wheel, the grain discharging wheel is arranged at the bottom opening of the grain discharging hopper, and the grain discharging wheel rotates to push out the grain in the grain discharging hopper.
5. The variable-circulation grain drying apparatus of claim 4, wherein The grain discharging mechanism further comprises a power part, the power part comprises a chain wheel and chain transmission mechanism and a motor, and the motor drives the grain discharging wheel to rotate through the chain wheel and chain transmission mechanism.
6. The variable-circulation grain drying apparatus of claim 1, wherein The heat source adopts a coal-fired heat source device, an oil-fired heat source device, a gas-fired heat source device, an electric heating heat source device, a biomass heat source device or a solar heat source device.