Constant-temperature negative-pressure drying bin
By combining solar energy and other energy sources in the drying silo to form a constant temperature and negative pressure environment, using annular ventilation ducts and multi-stage temperature control, the problems of low drying efficiency and unevenness are solved, and a more efficient and uniform drying effect is achieved. It also maintains uninterrupted heating under different conditions, and is suitable for rural and remote areas.
Patent Information
- Application Number
- CN202421188571.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing drying methods have problems such as low drying efficiency, high energy consumption, large pollution and limited application scope, especially in rural and remote areas, and tower dryers lead to uneven drying, reducing production efficiency and operating quality.
Design a constant temperature and negative pressure drying bin, combining solar energy and other energy sources, connects with ventilation ducts through heating devices to form a negative pressure environment, and uses annular ventilation ducts and multi-stage temperature control to achieve continuous low-temperature drying and through multiple The heat source ensures the sustainability of heating.
It improves drying efficiency and material storage duration, achieves a more uniform drying effect, and maintains uninterrupted heating under different conditions, and is suitable for rural and remote areas.
Smart Images
Figure CN222335854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying devices, in particular to a constant temperature negative pressure drying chamber. Background Art
[0002] In the processing of agricultural products such as fruits, vegetables, seeds, Chinese herbal medicines and seafood, it is usually necessary to dry them to preserve their effective nutrients and prevent them from being deteriorated and moldy due to long-term storage. The current drying methods mainly include natural air-drying method and coal and electric baking drying method. The traditional natural air-drying method requires a large site and a large amount of labor, and the drying time is long, the drying efficiency is low, and the effective nutrients in agricultural products, Chinese herbal medicines and seafood are seriously lost. The coal and electric baking drying method has high drying efficiency, but it is highly polluting, high energy consumption, high cost, and the conditions of use are limited. It can only be implemented in places with fuel and electricity, and it is not applicable to some rural areas and remote mountainous areas. At present, the solar drying equipment used in foreign countries such as Europe, Japan, and the United States is equipped with a plate collector on the top cover of the silo, which collects the heat of solar energy and dries the materials in the silo through forced ventilation by a fan. The biggest problem with this solar drying equipment is that it can only be dried on sunny days during the day, and cannot be used on rainy days and at night.
[0003] The existing tower dryers have the advantages of small footprint, high drying efficiency, and high energy utilization rate. They are suitable for large-scale factory production and small-batch drying operations by farmers. At present, the tower dryers used are mainly used for drying grains with strong fluidity. The grains are dried in different drying towers at different drying stages. Augers or bucket elevators are used to transport the grains between each drying tower. Different drying parameters are used between drying towers according to the drying process. In actual drying operations of existing dryers, the grain area at the inlet end of the air inlet angular tube has a large water content and high humidity, while the grain area near the closed end of the air inlet angular tube has a small water content and low humidity, resulting in a large difference in humidity within the drying section, which reduces the uniformity of grain drying and reduces production efficiency and operation quality.
[0004] Therefore, a constant temperature negative pressure drying chamber that combines solar energy with other energy sources is needed to ensure sufficient energy supply, dry the materials in a stable and gentle manner, improve drying efficiency, and preserve the materials in the chamber for a longer period of time. Utility Model Content
[0005] The purpose of the utility model is to provide a constant temperature negative pressure drying warehouse in view of the shortcomings of the prior art, combining solar energy-vertical constant temperature negative pressure drying silo, integrating the functions of continuous low-temperature drying of solar energy and slow revival of oil, accelerating the ripening process of oil, inhibiting the increase of acid value, and improving the oil yield.
[0006] The technical solution of the utility model is as follows:
[0007] The utility model discloses a constant temperature negative pressure drying warehouse, comprising a warehouse body, wherein the warehouse body is divided into three sections, each section is provided with a ventilation duct, the ventilation duct in each section is connected with a heating pipe, the front end of the heating pipe is connected with a heating device, and the rear end is divided into three heating pipes, the three heating pipes are respectively provided with temperature control devices, and the ends of the three heating pipes are respectively connected with the ventilation ducts in the three sections of the warehouse body; a feed port and a vacuum pumping device are provided on the top of the warehouse body.
[0008] With the above structure, the utility model connects the heating device with the ventilation duct to provide continuous heating, and utilizes the vacuum device on the top of the warehouse body to continuously draw air out of the warehouse body, so that negative pressure is formed in the warehouse body, thereby making the airflow in the warehouse flow continuously from bottom to top, maintaining ventilation and dryness inside the warehouse body, so that the materials in the warehouse body can be preserved longer and better.
[0009] Furthermore, the warehouse body is divided into three sections from top to bottom, namely, an upper warehouse, a middle warehouse and a lower warehouse. The upper warehouse, the middle warehouse and the lower warehouse are respectively connected with ventilation ducts. The temperatures in the ventilation ducts in the three sections are different. The temperature in the ventilation duct in the upper warehouse is 40-50°C, the temperature in the ventilation duct in the middle warehouse is 30-40°C, and the temperature in the ventilation duct in the lower warehouse is 25-30°C.
[0010] Furthermore, the ventilation duct is an annular ventilation duct.
[0011] Furthermore, a cooling fan is provided in the temperature control device.
[0012] In the above structure, the annular ventilation ducts are evenly distributed in the silo and are close to the inside of the silo, which increases the heating surface and can evenly dry the materials. It can also be set to a spiral shape, and multi-layer spiral ventilation ducts can dry the falling materials in all directions.
[0013] Furthermore, temperature sensors are respectively provided in the upper section warehouse, the middle section warehouse and the lower section warehouse, and the temperature sensor in each section is respectively connected to the temperature control device on the heating pipeline of the section.
[0014] The above mechanism divides the warehouse into three sections. Each section is equipped with a temperature sensor, which can independently control the ventilation wind speed to achieve multi-stage drying.
[0015] Furthermore, the bottom of the lower bin is a funnel-shaped storage area, and a vibrator is arranged outside the funnel-shaped storage area.
[0016] In the above structure, the funnel-shaped setting at the bottom of the lower bin makes it easy to take materials from below, and the setting of the vibrator makes it easier for materials to flow out from the bottom.
[0017] Furthermore, a discharge port is provided at the bottom of the warehouse body, and a discharge switch is installed on the discharge port.
[0018] With the above structure, when the dried material needs to be taken, the discharge switch and the vibrator are turned on to discharge the material from the bottom. When the material is not needed, the discharge switch is turned off, and the entire bin can be used as a storage space.
[0019] Furthermore, the heating device includes one or more combinations of solar energy, steam energy, electric energy, and biofuel energy.
[0020] With the above structure, the heating device can be composed of multiple heat sources, such as solar energy and steam energy, solar energy and electric energy, etc., to ensure uninterrupted heating even when there is not enough sunlight.
[0021] Furthermore, the heating device is connected to the ventilation duct through a hot air pipe.
[0022] In the above structure, the heating device transmits heat to the ventilation duct through the hot air pipe to dry the material.
[0023] Furthermore, a fan is provided on the hot air pipe.
[0024] Furthermore, it also includes a lifting pipeline, which is arranged outside the warehouse body, one end of the lifting pipeline is connected to the feed port, and the other end is connected to the upstream device.
[0025] Compared with the existing technology, the beneficial effects of the utility model are:
[0026] 1. The utility model continuously supplies heat by connecting the heating device with the ventilation duct, and uses the vacuum device on the top of the warehouse to continuously draw air out of the warehouse, so that negative pressure is formed in the warehouse, so that the air flow in the warehouse forms a continuous flow from bottom to top, maintaining ventilation and dryness inside the warehouse, so that the materials in the warehouse can be preserved longer and better.
[0027] 2. The utility model increases the heating surface through the annular ventilation duct, and the temperature of each bin section can be controlled by a temperature control device to achieve multi-stage drying, so that the material drying effect is better.
[0028] 3. The utility model provides heat through multiple heat sources, thus maintaining the continuity of heat supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the structure of the utility model;
[0030] Figure numerals: 1. Solar energy; 2. Steam energy; 3. Fan; 4. Vacuum extraction device; 5. Vibrator; 6. Lower warehouse; 7. Middle warehouse; 8. Upper warehouse; 9. Ventilation duct; 10. Temperature sensor; 11. Temperature control device. DETAILED DESCRIPTION
[0031] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0032] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0033] like Figure 1 As shown, the utility model discloses a constant temperature negative pressure drying chamber, including a chamber body, which is divided into three sections, each section is provided with a ventilation duct 9, and the ventilation duct 9 in each section is connected to a heating pipe, the front end of the heating pipe is connected to a heating device, and the rear end is divided into three heating pipes, and the three heating pipes are respectively provided with temperature control devices, and the ends of the three heating pipes are respectively connected to the ventilation ducts 9 in the three sections of the chamber body; the top of the chamber body is provided with a feed inlet and a vacuum device 4; the chamber body is divided into an upper chamber 8, a middle chamber 7 and a lower chamber from top to bottom. The warehouse 6 has three sections, and the upper warehouse 8, the middle warehouse 7 and the lower warehouse 6 are respectively connected with ventilation ducts 9. The temperatures in the ventilation ducts 9 in the three sections are different. The temperature in the ventilation duct 9 in the upper warehouse 8 is 40-50°C, the temperature in the ventilation duct 9 in the middle warehouse 7 is 30-40°C, and the temperature in the ventilation duct 9 in the lower warehouse 6 is 25-30°C. The heating device includes one or more combinations of solar energy 1, steam energy 2, electric energy, and biofuel energy. The heating device is connected to the ventilation duct 9 through a hot air pipe, and a fan 3 is arranged on the hot air pipe.
[0034] The bottom of the lower bin 6 is a funnel-shaped material storage area, and a vibrator 5 is arranged outside the funnel-shaped material storage area; the bottom of the bin body is provided with a discharge port, and a discharge switch is installed on the discharge port.
[0035] The utility model also comprises a lifting pipeline, which is arranged outside the bin body, one end of which is connected with the feed port, and the other end of which is connected with the upstream device.
[0036] Working principle: the material is carried into the silo from the top through the lifting pipe. During the falling process, the heat is transferred to the ventilation duct through the heating device to dry the material. During the drying process, the wind speed and weight are controlled by the temperature sensor 10 and the valve. The dried material is stored in the silo. When it is needed, the discharge switch and the vibrator 5 are turned on to release the material from the bottom.
[0037] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.
Claims
1. A constant temperature negative pressure drying chamber, characterized in that: The invention comprises a warehouse body, which is divided into three sections, each section is provided with a ventilation duct (9), the ventilation duct (9) in each section is connected to a heating duct, the front end of the heating duct is connected to a heating device, and the rear end is divided into three heating ducts, the three heating ducts are respectively provided with a temperature control device, and the ends of the three heating ducts are respectively connected to the ventilation ducts (9) in the three sections of the warehouse body; the top of the warehouse body is provided with a feed port and a vacuum device (4).
2. A constant temperature negative pressure drying chamber according to claim 1, characterized in that: The warehouse body is divided into three sections from top to bottom, namely an upper warehouse (8), a middle warehouse (7) and a lower warehouse (6). The upper warehouse (8), the middle warehouse (7) and the lower warehouse (6) are respectively connected with ventilation ducts (9). The temperatures in the ventilation ducts (9) in the three sections are different. The temperature in the ventilation duct (9) in the upper warehouse (8) is 40-50° C., the temperature in the ventilation duct (9) in the middle warehouse (7) is 30-40° C., and the temperature in the ventilation duct (9) in the lower warehouse (6) is 25-30° C.
3. A constant temperature negative pressure drying chamber according to claim 2, characterized in that: The ventilation duct (9) is an annular ventilation duct.
4. A constant temperature negative pressure drying chamber according to claim 2, characterized in that: A cooling fan is arranged in the temperature control device.
5. The constant temperature negative pressure drying chamber according to claim 2, characterized in that: The upper section bin (8), the middle section bin (7) and the lower section bin (6) are respectively provided with temperature sensors (10), and the temperature sensors in each section are respectively connected to the temperature control device on the heating pipeline of that section.
6. A constant temperature negative pressure drying chamber according to claim 2, 3 or 4, characterized in that: The bottom of the lower bin (6) is a funnel-shaped material storage area, and a vibrator (5) is arranged outside the funnel-shaped material storage area.
7. The constant temperature negative pressure drying chamber according to claim 1, characterized in that: A discharge port is arranged at the bottom of the bin body, and a discharge switch is installed on the discharge port.
8. The constant temperature negative pressure drying chamber according to claim 1, characterized in that: The heating device comprises one or a combination of solar energy (1), steam energy (2), electric energy, and biofuel energy.
9. A constant temperature negative pressure drying chamber according to claim 8, characterized in that: The ventilation duct (9) is connected to the hot air duct, and a fan (3) is provided on the hot air duct.
10. The constant temperature negative pressure drying chamber according to claim 2, characterized in that: It also includes a lifting pipeline, which is arranged outside the warehouse body, one end of the lifting pipeline is connected to the feed port, and the other end is connected to the upstream device.