Internal hot air flow rate control device for drying of oilseed rape

Abstract

The application discloses a rapeseed drying internal hot air flow speed control device, relates to the rapeseed processing technical field, and particularly relates to a rapeseed drying internal hot air flow speed control device, which comprises a support frame, the inside of the support frame is fixedly connected with a limiting frame, the two ends of the support frame are respectively provided with flow guide mechanisms, one end of each of the two flow guide mechanisms is fixedly connected with a flow speed control mechanism, the flow speed control mechanism comprises a telescopic control rod fixedly connected with one end of the flow guide mechanism, one end of the telescopic control rod away from the flow guide mechanism is fixedly connected with one side of a support ring, a plurality of limiting rollers are fixedly connected to the outer wall of the support ring, and the inside of each of the plurality of limiting rollers is respectively penetrated through a control rod hinged to one end of the flow guide mechanism. The rapeseed drying internal hot air flow speed control device adopts the principle of a Laval nozzle to control the air flow speed, and the flow speed control is realized without the need of power adjustment of a motor, so that the rapeseed drying internal hot air flow speed control device has a wider application range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rapeseed processing, in particular to an internal hot air flow speed control device during rapeseed drying. BACKGROUND

[0002] In agronomy, multiple species of plants with seed oil are collectively referred to as rapeseed, and the main types of rapeseed currently cultivated (varieties) are: Chinese cabbage type rapeseed, mustard type rapeseed, and cabbage type rapeseed, which are mainly distributed in Anhui, Henan, Sichuan and other places in China. The oil content in rapeseed is 37.5%-46.3%, and rapeseed is the first source of domestic vegetable oil. Because mature rapeseed contains a certain amount of moisture, direct storage is prone to germination or mold, and needs to be dried to a moisture content of less than 10% for safe storage. At present, rapeseed planting is mainly carried out by individual farmers, and the harvested rapeseed is mainly dried naturally to reduce the moisture content. However, rapeseed is usually matured in the plum rain season, making it difficult to dry in time after harvesting, and it is prone to germination under high temperature and high humidity conditions, so it needs to be dried using a machine.

[0003] The existing patent (publication number: CN111623610A) discloses a rapeseed rapid drying device, which includes a drying box, a discharge hopper, a screening net, a gear box, a motor, a stirring rod, a feeding hopper, an upper conveying belt, a conveying belt motor, a discharge pipe, a drying box, support legs and a power switch. One end of the stirring rod connected to the gear box is installed on the top of the drying box, the motor is installed on one side of the gear box, the screening net is installed at the bottom of the stirring rod, the discharge hopper is installed at the bottom of the screening net, the power switch is installed on the discharge hopper, the discharge pipe is installed at the bottom of the discharge hopper, the drying boxes are installed on both sides of the discharge pipe, the support legs are installed on both sides of the bottom of the drying box, and the feeding hopper is installed on one side of the top of the drying box. The device can realize rapid feeding of rapeseed, stirring and drying of rapeseed, improve efficiency, and also can screen rapeseed, has high flexibility, simple structure and is convenient to popularize. However, the air inlet mode of the existing drying equipment is mostly realized by relying on a fan, and the size and power of the fan will directly result in different air inlet efficiencies, and the air flow rate of the equipment can only be realized by changing the power of the motor, thereby resulting in the need for multiple power air inlet equipment for different dryers, which cannot meet the use requirements of people and has other shortcomings. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an internal hot air flow speed control device during rapeseed drying, which solves the problem that the air flow rate of the drying equipment can only be realized by changing the power of the motor, thereby resulting in the need for multiple power air inlet equipment for different dryers.

[0005] In order to achieve the above object, the oilseed rape drying internal hot air flow velocity control device is realized by the following technical scheme: the oilseed rape drying internal hot air flow velocity control device, including a support frame, the inside of the support frame is fixedly connected with a limiting frame, both ends of the support frame are respectively provided with a flow guide mechanism, one end of the two flow guide mechanisms is fixedly connected with a flow velocity control mechanism;

[0006] The flow velocity control mechanism includes a telescopic control rod fixedly connected with one end of the flow guide mechanism;

[0007] The other end of the telescopic control rod away from the flow guide mechanism is fixedly connected with one side of the control ring;

[0008] The outer wall of the control ring is fixedly connected with a plurality of limiting rollers, the inner part of the plurality of limiting rollers is respectively penetrated through a control rod hinged with one end of the flow guide mechanism, the other end of the control rod is fixedly connected with the outer wall of the guide vane, the middle part of the guide vane is hinged between the inner wall of the control ring, and the guide vanes are connected through the connecting pieces.

[0009] Optionally, the support frame includes a base panel, and the bottom of the base panel is fixedly connected with universal wheels;

[0010] The top of the base panel is fixedly connected with a support seat, the top of the support seat is attached to the bottom of the drying cylinder, one end of the drying cylinder is hinged to the top of the sealing cover, and the inside of the sealing cover is embedded with a transparent window;

[0011] Both ends of the drying cylinder are fixedly connected with cylinder covers.

[0012] Optionally, the support seats are symmetrically distributed about the vertical center line of the drying cylinder, and the central axis of the drying cylinder is consistent with the central axis of the sealing cover.

[0013] Optionally, the limiting frame includes a pressure bearing seat fixedly connected with the inner wall of the support frame;

[0014] The top of the pressure bearing seat is fixedly connected with a pressure bearing panel, and the top of the pressure bearing panel is fixedly connected with a fixed socket above both ends.

[0015] Optionally, the baffle is a circular hollow mesh structure, and the baffles are symmetrically distributed about the vertical center line of the pressure bearing panel.

[0016] Optionally, the flow guide mechanism includes an outer package fixedly connected with the support frame, the inner wall of the outer package is embedded with a support ring, and the middle part of the support ring is coaxially provided with a motor;

[0017] The inner wall of the support ring and the outer wall of the motor are connected through a support rod;

[0018] The output shaft of the motor is fixedly connected with a fan blade, the inner wall of the outer shell is fixedly connected with a ceramic sheet, and the inner wall of the ceramic sheet is fixedly connected with an electric heating wire.

[0019] Optionally, the outer shell, the supporting ring and the central axis of the motor are consistent.

[0020] Optionally, the ceramic sheet is provided in an annular strip structure.

[0021] Optionally, the limiting roller is provided with a rotating structure through a control ring, and the control ring is provided with an extension structure through an extension control rod.

[0022] Optionally, the control rod and the guide blade are provided with twelve, respectively, and the control rod and the guide blade are uniformly distributed in equiangular polygons.

[0023] The oilseed rape drying internal hot air flow speed control device has the following advantages:

[0024] 1. The oilseed rape drying internal hot air flow speed control device, by the cooperation between the base panel and the supporting seat, the bottom of the drying cylinder is fixedly supported, thereby maintaining the stability of the drying cylinder during use, avoiding the inclination of the equipment, and the cylinder cover installed at both ends of the drying cylinder can provide an installation platform for the drainage mechanism, so that the coaxiality between the drainage mechanism and the drying cylinder is maintained, and the sealing cover of the device adopts an upward opening mode, so that the user has more operation space during the feeding process.

[0025] 2. The oilseed rape drying internal hot air flow speed control device utilizes the cooperation between the pressure receiving panel and the pressure receiving seat to provide a stacking platform for the oilseed rape, wherein the baffles on both sides of the pressure receiving panel can provide a limiting action for the stacked oilseed rape, avoiding the oilseed rape from falling over, and also avoiding the oilseed rape from flowing out of the equipment with hot air, and the perforated baffles can maintain the smooth flow of hot air while limiting the oilseed rape.

[0026] 3. The oilseed rape drying internal hot air flow speed control device is provided with two drainage mechanisms, and each drainage mechanism is provided with a corresponding flow rate control mechanism, and the two drainage mechanisms are respectively used as the air inlet and the air outlet of the drying cylinder, thereby maintaining the smoothness of the air flow in the equipment, wherein the drainage mechanism is provided with an independent air inlet power mechanism, the power mechanism is composed of a motor and a fan blade, and an electric heating wire is vertically arranged on the side of the fan blade close to the limiting frame, the electric heating wire is distributed in an S shape at equal intervals, the electric heating wire can be used to heat the introduced air, and the oilseed rape is dried, and the periphery of the electric heating wire is wrapped with a heat insulation ceramic sheet to avoid direct contact between the electric heating wire and the inner wall of the outer shell.

[0027] 4. The oilseed drying internal hot air flow speed control device, the limiting roller is composed of two parallel rollers, the control rod passes through the two rollers, when the control ring moves, the limiting roller can change the inclination direction of the control rod, then the corresponding guide vane is moved by the control rod, the telescopic control rod can provide thrust for the control ring;

[0028] Each guide vane is a bent sheet structure, and the twelve guide vanes are equally distributed in a ring shape to form a Laval nozzle structure. When the fluid moves backward through the guide vanes and enters the right end of the guide vanes, the gas movement follows the principle that the flow rate is high in the small cross section and low in the large cross section. Therefore, the airflow is continuously accelerated, and when it reaches the narrow throat of the guide vane bend, the flow rate is greatly increased. After that, the fluid no longer follows the principle that the flow rate is high in the small cross section and low in the large cross section, but is exactly the opposite. The larger the cross section, the faster the flow rate. After passing through the bend of the guide vane, the speed of the airflow is further accelerated. The device can control the inlet air flow rate by adjusting the inclination angle of the guide vane during use. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a front view structural diagram of the oilseed drying internal hot air flow speed control device.

[0030] Figure 2 It is a front view full section structural diagram of the oilseed drying internal hot air flow speed control device.

[0031] Figure 3 It is a side view structural diagram of the oilseed drying internal hot air flow speed control device.

[0032] Figure 4 It is a local enlarged structural diagram of the flow rate control mechanism of the oilseed drying internal hot air flow speed control device.

[0033] Figure 5 It is a half-section enlarged structural diagram of the flow rate control mechanism of the oilseed drying internal hot air flow speed control device.

[0034] Figure 6 It is a half-section enlarged structural diagram of the flow rate control mechanism of the oilseed drying internal hot air flow speed control device. Figure 5

[0035] ​In the figure: 1, support frame; 101, base panel; 102, universal wheel; 103, support seat; 104, drying cylinder; 105, sealing cover; 106, transparent window; 107, cylinder cover; 2, limiting frame; 201, pressure bearing seat; 202, pressure bearing panel; 203, fixed socket; 204, baffle; 3, drainage mechanism; 301, outer package; 302, support ring; 303, motor; 304, support rod; 305, fan blade; 306, ceramic sheet; 307, electric heating wire; 4, flow rate control mechanism; 401, telescopic control rod; 402, control ring; 403, limiting roller; 404, control rod; 405, guide vane; 406, link piece. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0037] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Please refer to Figures 1 to 6 The present application provides a technical solution: the internal hot air flow rate control device during rapeseed drying, including support frame 1, the inside of support frame 1 is fixedly connected with limiting frame 2, the two ends of support frame 1 are respectively provided with drainage mechanism 3, one end of two drainage mechanisms 3 is fixedly connected with flow rate control mechanism 4;

[0039] The flow rate control mechanism 4 includes a telescopic control rod 401 fixedly connected with one end of the drainage mechanism 3;

[0040] The other end of the telescopic control rod 401 away from the drainage mechanism 3 is fixedly connected with one side of the control ring 402;

[0041] The outer wall of the control ring 402 is fixedly connected with a plurality of limiting rollers 403, the inner part of the plurality of limiting rollers 403 is respectively penetrated by a control rod 404 hinged with one end of the drainage mechanism 3, the other end of the control rod 404 is fixedly connected with the outer wall of the guide vane 405, the middle part of the guide vane 405 is hinged between the inner wall of the control ring 402, and the guide vanes 405 are connected through the link pieces 406.

[0042] In the embodiment, as Figure 1 And Figure 2As shown, the support frame 1 includes a base panel 101, and the bottom of the base panel 101 is fixedly connected with universal wheels 102;

[0043] The top of the base panel 101 is fixedly connected with support seats 103, the top of the support seat 103 is attached to the bottom of the drying cylinder 104, the support seats 103 are symmetrically distributed about the vertical center line of the drying cylinder 104, the central axis of the drying cylinder 104 coincides with the central axis of the sealing cover 105, the top of the drying cylinder 104 is hingedly connected with one end of the sealing cover 105, the inside of the sealing cover 105 is embedded with a transparent window 106, and the two ends of the drying cylinder 104 are fixedly connected with cylinder covers 107 respectively;

[0044] The base panel 101 and the support seat 103 cooperate to fixedly support the bottom of the drying cylinder 104, thereby maintaining the stability of the drying cylinder 104 during use and avoiding the inclination of the equipment, and the cylinder covers 107 installed at the two ends of the drying cylinder 104 can provide a mounting platform for the drainage mechanism 3, so that the drainage mechanism 3 and the drying cylinder 104 maintain coaxiality, and the sealing cover 105 of the device adopts an upward opening mode, which provides a larger operating space for the user during the feeding process.

[0045] In this embodiment, as shown in the figure, Figure 2 The limit frame 2 includes pressure bearing seats 201 fixedly connected with the inner walls of the support frame 1;

[0046] The top of the pressure bearing seat 201 is fixedly connected with a pressure bearing panel 202, the two ends of the pressure bearing panel 202 are fixedly connected with fixed sockets 203 above, and the inside of the fixed socket 203 is inserted with the bottom end of the baffle 204; the baffle 204 is a circular hollow mesh structure, and the baffles 204 are symmetrically distributed about the vertical center line of the pressure bearing panel 202;

[0047] The pressure bearing panel 202 and the pressure bearing seat 201 cooperate to provide a stacking platform for the user, the baffles 204 on the two sides of the pressure bearing panel 202 can provide a limiting effect for the stacked rape, avoiding the rape from falling over, and also avoiding the rape from flowing out of the equipment with hot air, and the hollow baffle 204 can limit the rape while keeping the hot air flowing unobstructed.

[0048] In this embodiment, as shown in the figure, Figure 3 The drainage mechanism 3 includes an outer shell 301 fixedly connected with the support frame 1, the inner wall of the outer shell 301 is embedded with a support ring 302, the middle part of the support ring 302 is coaxially provided with a motor 303, and the central axes of the outer shell 301, the support ring 302 and the motor 303 coincide;

[0049] The inner wall of the support ring 302 and the outer wall of the motor 303 are connected through a support rod 304;

[0050] The output shaft of the motor 303 is fixedly connected with a fan blade 305, the inner wall of the outer shell 301 is fixedly connected with a ceramic sheet 306, the inner wall of the ceramic sheet 306 is fixedly connected with an electric heating wire 307, and the ceramic sheet 306 is provided in an annular strip structure.

[0051] The two flow guide mechanisms 3 are provided with corresponding flow rate control mechanisms 4, and the two flow guide mechanisms 3 are respectively used as the air inlet and air outlet of the drying cylinder 104, so as to keep the air flow in the device smooth, wherein the flow guide mechanism 3 is provided with an independent air inlet power mechanism, the power mechanism is composed of the motor 303 and the fan blade 305, and the electric heating wire 307 is vertically arranged on the side of the fan blade 305 close to the limiting frame 2, the electric heating wire 307 is distributed in an S shape at equal intervals, the air introduced can be heated by the electric heating wire 307, and then the rapeseed is dried, and the electric heating wire 307 is wrapped by the heat insulation ceramic sheet 306 around the electric heating wire 307, so as to avoid the direct contact between the electric heating wire 307 and the inner wall of the outer shell 301.

[0052] In the embodiment, as shown in Figure 3 and Figure 4 The limiting roller 403 is in a rotating structure through the control ring 402, and the control ring 402 is in an extension structure through the extension control rod 401.

[0053] The control rod 404 and the guide vane 405 are respectively provided with twelve, and the control rod 404 and the guide vane 405 are uniformly distributed in a regular polygon.

[0054] The limiting roller 403 is composed of two parallel roller bodies, the control rod 404 passes between the two roller bodies, the inclination direction of the control rod 404 can be changed by the limiting roller 403 when the control ring 402 moves, the corresponding guide vane 405 is inclined and moved by the control rod 404, and the extension control rod 401 can provide a thrust for the control ring 402.

[0055] Each guide vane 405 is provided in a bent sheet structure, and the twelve guide vanes 405 are distributed in a ring shape at equal angles, so as to form a Laval nozzle structure, the fluid moves backward after passing through the guide vane 405, enters the right end of the guide vane 405, and in this stage, the gas movement follows the principle that "the flow rate is large at the small cross section and the flow rate is small at the large cross section when the fluid moves in the pipe", so the airflow is continuously accelerated, and when reaching the narrow throat of the bending of the guide vane 405, the flow rate is greatly increased, and then the fluid in the movement no longer follows the principle that "the flow rate is large at the small cross section and the flow rate is small at the large cross section", but is just the opposite, the larger the cross section, the faster the flow rate, and after passing through the bending of the guide vane 405, the speed of the airflow is further accelerated, and the air inlet flow rate can be changed and controlled by adjusting the inclination angle of the guide vane 405 during use of the device.

[0056] In summary, the rapeseed drying internal hot air flow speed control device, when in use, open the sealing cover 105, rapeseed placed between the two baffles 204, the baffle 204 on both sides of the pressure plate 202 can provide limiting effect for the rapeseed, to avoid the rapeseed dump situation, also to avoid the rapeseed with hot air out of the device, wherein the perforated baffle 204 can limit the rapeseed while maintaining the flow of hot air unobstructed, then close the sealing cover 105, start the motor 303 and the heating wire 307, the drainage mechanism 3 is provided with two, and the drainage mechanism 3 is provided with a corresponding flow control mechanism 4, two drainage mechanism 3 respectively as the air inlet and exhaust of the drying cylinder 104, thereby maintaining the flow of air inside the device unobstructed, wherein the drainage mechanism 3 is provided with independent air inlet power mechanism, its power mechanism is composed of motor 303 and fan blade 305, and the heating wire 307 is vertically arranged on the side of the fan blade 305 close to the limiting frame 2, the heating wire 307 is S-shaped equidistant distribution, the heating wire 307 can heat the air introduced, and then the rapeseed is dried, wherein the heating wire 307 is wrapped with heat insulation ceramic sheet 306 around, to avoid the heating wire 307 directly contact with the inner wall of the outer shell 301.

[0057] The limiting roller 403 is composed of two parallel roller bodies, and the control rod 404 passes between the two roller bodies. When the control ring 402 moves, the inclination direction of the control rod 404 can be changed by the limiting roller 403, and then the corresponding guide vane 405 is inclined and moved by the control rod 404. The telescopic control rod 401 can provide a thrust force for the control ring 402.

[0058] Each guide vane 405 is provided as a bent sheet structure, and twelve guide vanes 405 are arranged in a ring shape at equal angles to form a Laval nozzle structure. When the fluid moves backward through the guide vane 405 and enters the right end of the guide vane 405, in this stage, the gas movement follows the principle that "the flow velocity is large in the small cross section and small in the large cross section". Therefore, the airflow is continuously accelerated, and when it reaches the narrow throat of the guide vane 405, the flow velocity is greatly increased. After that, the fluid no longer follows the principle that "the flow velocity is large in the small cross section and small in the large cross section", but is just the opposite. The larger the cross section, the faster the flow velocity. After passing through the bent part of the guide vane 405, the speed of the airflow is further accelerated. The device can change and control the inlet flow velocity by adjusting the inclination angle of the guide vane 405 during use.

[0059] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. Device for controlling the internal hot air flow speed during drying of oilseed rape, comprising a support frame (1), characterized in that: The support frame (1) is internally fixedly connected with a limiting frame (2), and the two ends of the support frame (1) are respectively provided with a drainage mechanism (3), and one end of the two drainage mechanisms (3) is fixedly connected with a flow rate control mechanism (4); The limiting frame (2) comprises a pressure bearing seat (201) fixedly connected with the inner wall of the support frame (1); The top of the pressure bearing seat (201) is fixedly connected with a pressure bearing panel (202), the upper ends of the two ends of the pressure bearing panel (202) are fixedly connected with a fixed socket (203), and the inside of the fixed socket (203) is inserted with the bottom end of a baffle (204); The drainage mechanism (3) comprises an outer package shell (301) fixedly connected with the support frame (1), the inner wall of the outer package shell (301) is embedded with a support ring (302), and the middle part of the support ring (302) is coaxially provided with an electric motor (303); The inner wall of the support ring (302) and the outer wall of the electric motor (303) are connected through a support rod (304); The output shaft of the electric motor (303) is fixedly connected with a fan blade (305), the inner wall of the outer package shell (301) is fixedly attached with a ceramic sheet (306), and the inner wall of the ceramic sheet (306) is fixedly connected with an electric heating wire (307); The central axes of the outer package shell (301), the support ring (302) and the electric motor (303) are consistent; The ceramic sheet (306) is provided in the form of an annular strip structure; The flow rate control mechanism (4) comprises a telescopic control rod (401) fixedly connected with one end of the drainage mechanism (3); The end of the telescopic control rod (401) away from the drainage mechanism (3) is fixedly connected with one side of a control ring (402); The outer wall of the control ring (402) is fixedly connected with a plurality of limiting rollers (403), the inner part of each of the plurality of limiting rollers (403) is respectively penetrated through a control rod (404) hingedly connected with one end of the drainage mechanism (3), the other end of the control rod (404) is fixedly connected with the outer wall of a guide vane (405), the middle part of the guide vane (405) is hingedly connected with the inner wall of the control ring (402), and the guide vanes (405) are connected through a linking piece (406); The limiting rollers (403) constitute a rotating structure through the control ring (402), and the control ring (402) constitutes a telescopic structure through the telescopic control rod (401); The control rod (404) and the guide vane (405) are respectively provided with twelve, and the control rod (404) and the guide vane (405) are evenly distributed in the form of a regular polygon; Each guide vane (405) is provided in the form of a bent sheet structure, and twelve guide vanes (405) are evenly distributed in the form of a ring, thereby forming a Laval nozzle structure.

2. The rapeseed drying internal hot air flow rate control device according to claim 1, characterized in that: The support frame (1) comprises a base panel (101), and the bottom of the base panel (101) is fixedly connected with a universal wheel (102); The top of the base panel (101) is fixedly connected with a support seat (103), the top of the support seat (103) is attached to the bottom of a drying cylinder (104), the top of the drying cylinder (104) is hingedly connected with one end of a sealing cover (105), and the inside of the sealing cover (105) is embedded with a transparent window (106). The two ends of the drying cylinder (104) are fixedly connected with cylinder covers (107) respectively.

3. The rapeseed drying internal hot air flow rate control device according to claim 2, characterized in that: The support seats (103) are symmetrically distributed about the vertical center line of the drying cylinder (104), and the central axis of the drying cylinder (104) is consistent with the central axis of the sealing cover (105).

4. The rapeseed drying internal hot air flow rate control device according to claim 1, characterized by: The baffle (204) is provided as a circular hollow mesh structure, and the baffles (204) are symmetrically distributed about the vertical center line of the pressure-bearing panel (202).

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