Grain dust filtering device of grain dryer

Abstract

The utility model belongs to the technical field of grain drying equipment, and particularly relates to a grain dust filtering device of a grain dryer, which comprises a grain dust filtering box. A feeding hole is formed in the middle of the side wall of the grain dust filtering box; a first collecting box is arranged in the middle of the grain dust filtering box; a first supporting frame is fixedly connected to the interior of the grain dust filtering box; the bottom of the first collecting box is in sliding fit with the top of the first supporting frame. The bottom of the inner side wall of the first collecting box is fixedly connected with a first material blocking screen. A motor is mounted at the bottom of the grain dust filtering box; according to the step, grain dust mixed in the grains can be blown out by arranging a grain dust filtering box, a feeding opening, a first collecting box, a first supporting frame, a motor and fan blades, the pumped grain dust can be pumped out by arranging an air outlet and an air guiding pipe, and then the grain dust mixed in the grains is filtered; and the conditions that the grain dust is directly discharged into the environment without being treated, the health of surrounding operators is harmed, and the environment is polluted are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain drying equipment, in particular to a grain dust filtering device of a grain dryer. Background Art

[0002] Grain dryer is a kind of equipment specially used for drying grains, such as rice and wheat. This machine is mainly composed of coal stove, electric motor, axial flow fan and stacking rack. The main function of grain dryer is to reduce the moisture content in grains by controlling factors such as temperature and humidity without damaging the quality of grains, so that the grains can meet national safety storage standards.

[0003] In the prior art, after the grain dryer has finished drying the grain, the grain dryer will discharge the grain through the discharge port. At this time, the discharged grain will be mixed with a large amount of grain dust. During long-term use and observation, it was found that if the grain dust is directly discharged into the environment without treatment, it will endanger the health of the surrounding operators and pollute the environment. At the same time, too much dust in the workshop can easily cause safety accidents.

[0004] To this end, the utility model provides a grain dust filtering device for a grain dryer. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a grain dust filtering device for a grain dryer is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the grain dust filtering device of the grain dryer described in the utility model comprises a grain dust filter box; a feed inlet is provided in the middle of the side wall of the grain dust filter box; a first collecting box is provided in the middle of the grain dust filter box; a first support frame is fixedly connected to the inside of the grain dust filter box; the bottom of the first collecting box slides with the top of the first support frame; a first material blocking screen is fixedly connected to the bottom of the inner side wall of the first collecting box; a motor is installed at the bottom of the grain dust filter box; a fan blade is fixedly connected to the output end of the motor; the fan blades are multiple and distributed in an annular manner at the output end of the motor; the fan blades are arranged inside the grain dust filter box; the fan blades are arranged below the first collecting box; a second material blocking screen is provided inside the grain dust filter box; the second material blocking screen is arranged above the first collecting box; the grain dust filter An air outlet is provided on the top of the box; an air duct is fixedly connected to the middle of the air outlet; a filter assembly is provided on the side wall of the grain dust filter box; the other end of the air duct is connected to the filter assembly; the apertures of the first material blocking screen and the second material blocking screen are smaller than the diameter of the grains; in this step, by providing a grain dust filter box, a feed port, a first collecting box, a first support frame, a motor and fan blades, the grains mixed in the grains can be blown out; by providing the first material blocking screen and the second material blocking screen, the grains can be blocked when the motor and the fan blades blow the grain dust out, reducing the situation where the grains are drawn out together by the filter assembly; by providing the air outlet and the air duct, the drawn grain dust can be drawn out, and then the grain dust mixed in the grains can be filtered, reducing the situation where the grain dust is directly discharged into the environment without treatment, endangering the health of surrounding operators and polluting the environment.

[0007] Preferably, the filter assembly includes a second support frame; the second support frame is fixedly connected to the middle part of the grain dust filter box; an air inlet is opened at the top of the second support frame; the air duct is connected to the air inlet; a second collecting box is provided in the middle part of the second support frame; the second collecting box is slidably matched with the second support frame; an air pump is installed at the bottom of the second support frame; this step can extract the grain dust from the inside of the grain dust filter box by providing a second support frame and an air pump, and can collect and store the grain dust extracted from the inside of the grain dust filter box by providing a second collecting box, thereby facilitating the staff to carry and handle the filtered grain dust, reducing the workload of the staff and improving the work efficiency of the staff.

[0008] Preferably, a ball bearing is fixedly connected to the top of the first support frame; the ball bearings are multiple and evenly distributed on the top of the first support frame; by providing the ball bearings, this step can change the sliding contact between the bottom of the first collecting box and the top of the first support frame into a rolling contact between the bottom of the first collecting box and the top of the ball bearings when the staff pulls the first collecting box out from the interior of the grain dust filter box, thereby reducing the friction force when the bottom of the first collecting box contacts the top of the first support frame, thereby reducing the wear when the bottom of the first collecting box contacts the top of the first support frame, thereby improving the service life of the device, and making the first collecting box slide more smoothly along the first support frame, thereby improving the stability when the staff pulls the first collecting box out from the interior of the grain dust filter box.

[0009] Preferably, an observation window is provided in the middle of the first collecting box; the observation window is made of transparent material; by providing the observation window, this step allows the staff to more conveniently observe the separation of grains and grain dust inside the grain dust filter box when the device is separating grains and grain dust, thereby reducing the need for the staff to stop the machine and pull the first collecting box out of the grain dust filter box to observe the separation of grains and grain dust, further reducing the workload of the staff, further improving the work efficiency of the staff, and improving the separation efficiency of the device for grains and grain dust.

[0010] Preferably, the inner side wall of the grain dust filter box is fixedly connected to a third support frame; the third support frame is arranged above the second material blocking screen; the top of the second material blocking screen is fixedly connected to a spring; the spring is slidably connected to the third support frame; a support shaft is connected between the third support frame and the second material blocking screen; the support shaft is sleeved outside the spring; the spring and the support shaft are multiple groups and are evenly distributed on the top of the second material blocking screen; in this step, by providing the third support frame, the spring and the support shaft, when the motor and the fan blades blow the grains away, the grains will hit the middle of the second material blocking screen. At this time, the spring will push the second material blocking screen and buffer this process, thereby reducing the situation where the grains hit the middle of the second material blocking screen and are broken, thereby improving the separation effect of this device on grains and grain dust, and by providing the support shaft, the spring can be supported when the spring pushes the second material blocking screen, thereby reducing the situation where the spring pushes the support shaft and is twisted and deformed, thereby improving the stability of the spring when working.

[0011] Preferably, a wind shield is fixedly connected to the top of the inner wall of the grain dust filter box; the lowest end of the wind shield is arranged corresponding to the air outlet; this step, by providing the wind shield, can guide the flow of air after the motor and the fan blades blow out the grain dust, thereby making it easier for the grain dust to enter the interior of the air duct, further improving the separation effect of this device on grains and grain dust.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The grain dust filtering device of a grain dryer described in the utility model can blow out the grain dust mixed in the grains by providing a grain dust filtering box, a feed inlet, a first collecting box, a first supporting frame, a motor and fan blades. The first material blocking screen and the second material blocking screen can block the grains when the motor and the fan blades blow out the grain dust, thereby reducing the situation where the grains are drawn out together with the filtering component. The air outlet and the air guide duct can be provided to draw out the drawn grain dust, and then the grain dust mixed in the grains can be filtered, thereby reducing the situation where the grain dust is directly discharged into the environment without treatment, endangering the health of surrounding operators and polluting the environment.

[0014] 2. The grain dust filtering device of a grain dryer described in the utility model can extract grain dust from the interior of the grain dust filtering box by providing a second support frame and an exhaust pump. By providing a second collecting box, the grain dust extracted from the interior of the grain dust filtering box can be collected and stored, thereby facilitating the staff to carry and process the filtered grain dust, reducing the staff's workload and improving the staff's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a stereogram in the utility model;

[0017] Figure 2 It is a side sectional view in the utility model;

[0018] Figure 3 It is a cross-sectional view in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the grain dust filter box in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the third support frame in the utility model;

[0021] Legend:

[0022] 1. Grain dust filter box; 11. Feed inlet; 12. First collecting box; 13. First material blocking screen; 14. First support frame; 15. Motor; 16. Fan blades; 17. Second material blocking screen; 18. Air outlet; 19. Air duct; 2. Second support frame; 21. Air inlet; 22. Second collecting box; 23. Vacuum pump; 3. Ball bearing; 4. Observation window; 5. Third support frame; 51. Spring; 52. Support shaft; 6. Wind shield. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] like Figures 1 to 4As shown, a grain dust filtering device of a grain dryer described in an embodiment of the utility model comprises a grain dust filtering box 1; a feed inlet 11 is provided in the middle of the side wall of the grain dust filtering box 1; a first collecting box 12 is provided in the middle of the grain dust filtering box 1; a first supporting frame 14 is fixedly connected to the inside of the grain dust filtering box 1; the bottom of the first collecting box 12 is slidably matched with the top of the first supporting frame 14; a first material blocking screen 13 is fixedly connected to the bottom of the inner side wall of the first collecting box 12; a motor 15 is installed at the bottom of the grain dust filtering box 1; a fan blade 16 is fixedly connected to the output end of the motor 15; the fan blades 16 are multiple and annularly distributed at the output end of the motor 15 ; The fan blade 16 is arranged inside the grain dust filter box 1; The fan blade 16 is arranged below the first collecting box 12; A second material blocking screen 17 is arranged inside the grain dust filter box 1; The second material blocking screen 17 is arranged above the first collecting box 12; An air outlet 18 is opened on the top of the grain dust filter box 1; An air duct 19 is fixedly connected to the middle of the air outlet 18; A filter assembly is arranged on the side wall of the grain dust filter box 1; The other end of the air duct 19 is connected to the filter assembly; The apertures of the first material blocking screen 13 and the second material blocking screen 17 are smaller than the diameter of the grain; When working, the staff will pass the grain dried by the grain dryer from the feed inlet 11 The grain dust is introduced into the grain dust filter box 1, and at this time, it will be retained on the top of the first material-blocking screen 13. At this time, the staff starts the motor 15 to drive the fan blades 16 to rotate, thereby blowing away the grains on the top of the first material-blocking screen 13 and moving irregularly inside the grain dust filter box 1. At this time, the heavier grains will fall downward, and the lighter grain dust will be blown away, and then be drawn out from the air outlet 18 and the air guide 19 by the filter assembly. When the grain dust removal is completed, the staff turns off the motor 15. At this time, the staff will draw the first collection box 12 and the first material-blocking screen 13 out of the grain dust filter box 1, and then discharge the dust-removed grains. This step By providing a grain dust filter box 1, a feed port 11, a first collecting box 12, a first support frame 14, a motor 15 and fan blades 16, the grain dust mixed in the grains can be blown out; by providing a first material blocking screen 13 and a second material blocking screen 17, the grains can be blocked when the motor 15 and the fan blades 16 blow the grain dust out, thereby reducing the situation where the grains are drawn out together with the filtering component; by providing an air outlet 18 and an air guide duct 19, the drawn grain dust can be drawn out, and then the grain dust mixed in the grains can be filtered, thereby reducing the situation where the grain dust is directly discharged into the environment without treatment, endangering the health of surrounding operators and polluting the environment.

[0026] Further, such as Figure 2As shown, the filtering assembly includes a second support frame 2; the second support frame 2 is fixedly connected to the middle part of the grain dust filtering box 1; an air inlet 21 is provided on the top of the second support frame 2; the air guide 19 is connected to the air inlet 21; a second collecting box 22 is provided in the middle part of the second support frame 2; the second collecting box 22 is slidably matched with the second support frame 2; an air pump 23 is installed at the bottom of the second support frame 2; when working, when the motor 15 and the fan blades 16 blow out the grains inside the first collecting box 12 and the first material blocking screen 13, the staff starts the air pump 23 to exhaust air from the second support frame 2. At the same time, the vacuum pump 23 will draw the grain dust out of the grain dust filter box 1 through the air outlet 18 and the air duct 19, and then enter the second collecting box 22 through the air inlet 21, and then be filtered by the second collecting box 22 and retained in the second collecting box 22. This step can draw the grain dust out of the grain dust filter box 1 by providing a second support frame 2 and a vacuum pump 23. By providing a second collecting box 22, the grain dust drawn from the grain dust filter box 1 can be collected and stored, thereby facilitating the staff to carry and process the filtered grain dust, reducing the staff's workload and improving the staff's work efficiency.

[0027] Further, such as Figure 3 and Figure 4 As shown, a ball 3 is fixedly connected to the top of the first support frame 14; the ball 3 is multiple and evenly distributed on the top of the first support frame 14; this step is provided with the ball 3, when the staff pulls the first collecting box 12 out of the grain dust filter box 1, the sliding contact between the bottom of the first collecting box 12 and the top of the first support frame 14 is changed to a rolling contact between the bottom of the first collecting box 12 and the top of the ball 3, thereby reducing the friction force when the bottom of the first collecting box 12 contacts the top of the first support frame 14, thereby reducing the wear when the bottom of the first collecting box 12 contacts the top of the first support frame 14, thereby improving the service life of this device, and making the first collecting box 12 slide more smoothly along the first support frame 14, thereby improving the stability when the staff pulls the first collecting box 12 out of the grain dust filter box 1.

[0028] Further, such as Figure 1 and Figure 2 As shown, an observation window 4 is provided in the middle of the first collecting box 12; the observation window 4 is made of transparent material; by providing the observation window 4, when the device separates the grains and the grain dust, the staff can more conveniently observe the separation of the grains and the grain dust inside the grain dust filter box 1, thereby reducing the need for the staff to stop the machine and pull out the first collecting box 12 from the grain dust filter box 1 to observe the separation of the grains and the grain dust, thereby further reducing the workload of the staff, further improving the work efficiency of the staff, and improving the separation efficiency of the device for grains and the grain dust.

[0029] Further, such as Figures 2 to 5 As shown, the inner wall of the grain dust filter box 1 is fixedly connected to a third support frame 5; the third support frame 5 is arranged above the second material blocking screen 17; a spring 51 is fixedly connected to the top of the second material blocking screen 17; the spring 51 is slidably connected to the third support frame 5; a support shaft 52 is connected between the third support frame 5 and the second material blocking screen 17; the support shaft 52 is sleeved outside the spring 51; the spring 51 and the support shaft 52 are multiple groups and are evenly distributed on the top of the second material blocking screen 17; this step can be carried out by providing the third support frame 5, the spring 51 and the support shaft 52, When the fan blades 16 blow the grains away, the grains will hit the middle of the second material-blocking screen 17. At this time, the spring 51 will push the second material-blocking screen 17 and buffer this process, thereby reducing the grains from hitting the middle of the second material-blocking screen 17 and causing them to break, thereby improving the separation effect of this device on grains and grain dust. By providing a support shaft 52, the spring 51 can be supported when the spring 51 pushes the second material-blocking screen 17, thereby reducing the twisting and deformation when the spring 51 pushes the support shaft 52, thereby improving the stability of the spring 51 when it is working.

[0030] Further, such as Figure 2 and Figure 4 As shown, a wind shield 6 is fixedly connected to the top of the inner wall of the grain dust filter box 1; the lowest end of the wind shield 6 is arranged corresponding to the air outlet 18; this step is provided with the wind shield 6, which can guide the flow of air after the motor 15 and the fan blades 16 blow out the grain dust, thereby making it easier for the grain dust to enter the air guide duct 19, and further improving the separation effect of this device on grains and grain dust.

[0031] Working principle: The staff introduces the grains dried by the grain dryer into the grain dust filter box 1 from the feed port 11. At this time, the staff will remain on the top of the first material blocking screen 13. At this time, the staff starts the motor 15 to drive the fan blades 16 to rotate, thereby blowing the grains on the top of the first material blocking screen 13 away and moving irregularly inside the grain dust filter box 1. At this time, the heavier grains will fall downwards, and the lighter grain dust will be blown away, and then be extracted from the air outlet 18 and the air guide 19 by the filter assembly. When the grain dust removal is completed, the staff turns off the motor 15. At this time, The staff then draws out the first collecting box 12 and the first material blocking screen 13 from the interior of the grain dust filter box 1, and then discharges the grains that have been dusted. When the motor 15 and the fan blades 16 blow out the grains in the first collecting box 12 and the first material blocking screen 13, the staff starts the vacuum pump 23 to exhaust the second support frame 2. At this time, the vacuum pump 23 will draw the grain dust out of the grain dust filter box 1 through the air outlet 18 and the air duct 19, and then enter the second collecting box 22 through the air inlet 21, and then be filtered by the second collecting box 22 and retained in the second collecting box 22.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A grain dust filtering device for a grain dryer, comprising a grain dust filtering box (1); characterized in that: A feed inlet (11) is provided in the middle of the side wall of the grain dust filter box (1); a first collecting box (12) is provided in the middle of the grain dust filter box (1); a first support frame (14) is fixedly connected inside the grain dust filter box (1); the bottom of the first collecting box (12) is slidably matched with the top of the first support frame (14); a first material blocking screen (13) is fixedly connected to the bottom of the inner side wall of the first collecting box (12); a motor (15) is installed at the bottom of the grain dust filter box (1); a fan blade (16) is fixedly connected to the output end of the motor (15); the fan blade (16) is multiple and annularly distributed at the output end of the motor (15); the fan blade (16) is arranged inside the grain dust filter box (1); the fan blade (16) is arranged below the first collecting box (12); a second material blocking screen (17) is arranged inside the grain dust filter box (1); the second material blocking screen (17) is arranged above the first collecting box (12); an air outlet (18) is opened on the top of the grain dust filter box (1); an air guide duct (19) is fixedly connected to the middle of the air outlet (18); a filter assembly is arranged on the side wall of the grain dust filter box (1); the other end of the air guide duct (19) is connected to the filter assembly; the apertures of the first material blocking screen (13) and the second material blocking screen (17) are smaller than the diameter of the grain.

2. A grain dust filtering device for a grain dryer according to claim 1, characterized in that: The filtering assembly comprises a second support frame (2); the second support frame (2) is fixedly connected to the middle of the grain dust filtering box (1); an air inlet (21) is provided at the top of the second support frame (2); the air guide pipe (19) is connected to the air inlet (21); a second collecting box (22) is provided in the middle of the second support frame (2); the second collecting box (22) is slidably matched with the second support frame (2); and an air pump (23) is installed at the bottom of the second support frame (2).

3. A grain dust filtering device for a grain dryer according to claim 2, characterized in that: A ball (3) is fixedly connected to the top of the first support frame (14); the ball (3) is multiple and evenly distributed on the top of the first support frame (14).

4. A grain dust filtering device for a grain dryer according to claim 3, characterized in that: An observation window (4) is provided in the middle of the first collection box (12); the observation window (4) is made of transparent material.

5. A grain dust filtering device for a grain dryer according to claim 4, characterized in that: A third support frame (5) is fixedly connected to the inner wall of the grain dust filter box (1); the third support frame (5) is arranged above the second material blocking screen (17); a spring (51) is fixedly connected to the top of the second material blocking screen (17); the spring (51) is slidably connected to the third support frame (5); a support shaft (52) is connected between the third support frame (5) and the second material blocking screen (17); the support shaft (52) is sleeved outside the spring (51); the spring (51) and the support shaft (52) are multiple groups and are evenly distributed on the top of the second material blocking screen (17).

6. A grain dust filtering device for a grain dryer according to claim 5, characterized in that: A windshield (6) is fixedly connected to the top of the inner wall of the grain dust filter box (1); the lowest end of the windshield (6) is arranged corresponding to the air outlet (18).

Images