Grain drying and dust removing device

Abstract

The utility model belongs to the technical field of grain processing equipment, and particularly discloses a grain drying and dust removing device which is used for solving the technical problems that the single-time drying amount is small, the time consumed by the single-time drying amount is too long, and accurate dust removal cannot be achieved due to the fact that rice is also sucked in the dust suction process. The grain drying device comprises a drying cylinder, a dust removal box is installed at the lower end of the drying cylinder, a pit box is arranged at the bottom of the dust removal box, a grain guide pipe is jointly installed in the middle of the drying cylinder and the middle of the dust removal box, and the bottom end of the grain guide pipe extends into the pit box. Continuous drying and insect killing of the rice are achieved in the mode that the rice is continuously fed and dried through high-temperature airflow, the continuity of rice processing is high, collection is convenient, effective and accurate dust removal can be achieved while the rice is dried through a dust removal structure integrated with drying, and the rice and the dust removal structure are matched for use, so that the rice drying efficiency is improved. Synchronous drying and dust removal are achieved under the condition that the quality of the rice is not damaged, and the yield and the processing efficiency of the rice are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain processing equipment, in particular to a grain drying and dust removal device. Background Art

[0002] Grain refers to the general term for various plant seeds in cooking food, which can also be generally referred to as grains. Grain crops are rich in nutrients, mainly protein, vitamins, dietary fiber and fat. my country is a major grain country, so how to effectively store grain is very important. Before storing grain, it is usually necessary to dry and dedust it. The dried grain is easy to store, and the dedusted grain is conducive to sales. When drying grain such as rice, the rice is dried by turning it over or directly blowing hot air or ventilation;

[0003] Referring to the invention patent with publication number CN108746071A, it solves the counting problem of simultaneous drying and dust removal in the rice processing process, but the single drying amount is small and the single drying amount consumes too much time, and the drying efficiency is greatly reduced without changing the drying amount; at the same time, during the dust removal process, the rice may be mistakenly cleaned, that is, the rice may also be sucked away during the dust suction process, which affects the yield of rice processing and cannot complete accurate dust removal;

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The utility model aims to provide a grain drying and dust removal device to solve the problems that the single drying amount is small and the single drying amount consumes too much time and the rice is also sucked away during the dust suction process, resulting in inaccurate dust removal.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a grain drying and dust removal device, comprising a drying cylinder, a dust removal box is installed at the lower end of the drying cylinder, a pit box is provided at the bottom of the dust removal box, a grain guide pipe is installed together in the inner middle of the drying cylinder and the dust removal box, the bottom end of the grain guide pipe extends into the pit box, a high-pressure air intake pipe is installed at the bottom of the pit box, the high-pressure air intake pipe is connected to a high-temperature and high-pressure output air pump, the high-pressure air intake pipe is coaxial with the grain guide pipe, an exhaust gas discharge pipe is installed at the top of the drying cylinder, the bottom of the dust removal box is conical and is equipped with a grain unloading pipe; a dust removal mechanism is installed on the outer sleeve of the grain guide pipe, and the dust suction end of the dust removal mechanism is connected to a cavity formed by the drying cylinder and the dust removal box.

[0007] Preferably, the dust removal mechanism includes a dust removal cylinder and a dust suction pipe, the dust removal cylinder is sleeved on the outside of the grain guide pipe, the lower end of the dust removal cylinder is provided with spaced annular blades, the dust suction pipe is installed in the box body part of the dust removal box corresponding to the annular blades, and the dust suction pipe is connected to the dust cleaner, the inner end of the dust suction pipe extends into the annular blade, the upper end of the dust removal cylinder is penetrated by an air inlet pipe facing outward, and the air inlet pipe is connected to the blower.

[0008] Preferably, the bottom of the dust removal cylinder is sealed, and a plurality of the annular blades are connected, the lower ends of the annular blades are inclined toward the outside, and the lower ends of the upper annular blades cover the outer side of the upper ends of the lower annular blades.

[0009] Preferably, symmetrically distributed electric push rods are installed at the lower end of the bottom of the dust removal box, the output ends of the electric push rods face downward and are installed with a fixing frame, the fixing frame passes through the dust removal box and extends to the end of the interior and is installed with a retaining ring, the retaining ring is funnel-shaped and seals to the gap between the dust removal box and the grain guide pipe.

[0010] Preferably, a gate tube is provided above the middle of the inner bottom end of the pit box, the gate tube is sleeved on the outside of the grain guiding pipe, and lifting rods are hinged on both sides of the upper end of the gate tube, and the lifting rods are also hinged to the pit box.

[0011] Preferably, a baffle is installed on the inner side of the drying cylinder corresponding to the upper end of the grain guiding pipe, and mounting rods are installed on both sides of the baffle, and the mounting rods are connected to the inner wall of the drying cylinder.

[0012] Preferably, when the bottom of the retaining ring contacts the inner bottom end of the cone of the dust removal box, the upper end of the retaining ring is sealed around the outer side of the lower end of the grain guiding pipe.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model is to infuse high-temperature and high-pressure gas into the pit box through a high-pressure air intake pipe through a high-temperature and high-pressure air pump, and the wet rice in the pit box is lifted upward by the high-temperature and high-pressure gas and infused into the drying cylinder under the action of the connection between the gate tube and the grain guide pipe. During the high-speed flow of the rice, a large amount of surface moisture is vaporized and discharged through the exhaust gas discharge pipe; at the same time, it is impacted by the impact of the high-speed flowing gas and hits the baffle plate and scatters to the bottom of the drying cylinder and the dust removal box; the baffle ring is in an open state, that is, the baffle ring does not form a seal for the gap between the dust removal box and the grain guide pipe, so that the scattered rice continues to fall downward into the pit box, and the cycle is repeated until the drying requirement is met, at which time the electric push rod is started, and the electric push rod drives the baffle ring to descend, thereby completing the sealing of the gap between the dust removal box and the grain guide pipe, and then completing the collection through the grain unloading pipe. In the above-mentioned rice drying process, the high-temperature and high-pressure gas is used to achieve full drying of the rice, and the high-temperature drying and collection of the rice are integrated into a design, which can also complete rice pest control;

[0015] (2) While the rice is drying, the air inlet pipe is connected to the blower and the dust suction pipe is connected to the dust collector. When the rice is impacted by the grain guide pipe onto the baffle and then scattered downward onto the outside of the dust removal box, the dust mixed in the rice enters the dust removal cylinder through the gap of the annular blade plate under the combined action of the air inlet pipe and the dust suction pipe. As the dust suction pipe continuously sucks outward, the dust is discharged through the dust suction pipe to be collected. The structural design in which the lower end of the upwind annular blade plate covers the outer side of the upper end of the annular blade plate below can effectively avoid the phenomenon of rice being accidentally sucked in, thereby achieving the purpose of accurate dust removal. Combined with the rice drying in the above-mentioned embodiment 1, the rice processing integrating drying and dust removal is completed, thereby improving the rice finished product rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 It is a structural stereogram of the entire utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 The utility model Figure 2 A in the enlarged view;

[0020] Figure 4 It is a partial structural cutaway schematic diagram of the utility model;

[0021] Figure 5 The utility model Figure 4 The enlarged view of point B in the figure;

[0022] Figure 6 It is a structural schematic diagram of the pit box of the utility model.

[0023] Legend: 1. Drying cylinder; 2. Dust removal box; 3. Pit box; 4. High-pressure air inlet pipe; 5. Exhaust gas exhaust pipe; 6. Blast inlet pipe; 7. Dust suction pipe; 8. Grain unloading pipe; 9. Brake tube; 10. Grain guide pipe; 11. Dust removal cylinder; 12. Annular blade; 13. Baffle; 14. Mounting rod; 15. Electric push rod; 16. Fixed bracket; 17. Baffle ring; 18. Lifting rod. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Embodiment 1:

[0026] This embodiment is used to solve the problem of small single drying amount and long time consumption in the rice drying process.

[0027] See also Figure 1 - Figure 6 As shown, this embodiment is a grain drying and dust removal device, comprising a drying cylinder 1, a dust removal box 2 is installed at the lower end of the drying cylinder 1, a pit box 3 is provided at the bottom of the dust removal box 2, a grain guide pipe 10 is installed in the middle of the drying cylinder 1 and the dust removal box 2, the bottom end of the grain guide pipe 10 extends into the pit box 3, a high-pressure air intake pipe 4 is installed at the bottom of the pit box 3, the high-pressure air intake pipe 4 is connected to the high-temperature and high-pressure output air pump, and the high-pressure air intake pipe 4 is coaxial with the grain guide pipe 10, an exhaust gas discharge pipe 5 is installed at the top of the drying cylinder 1, and the bottom of the dust removal box 2 is conical and is installed with a grain unloading pipe 8; a dust removal mechanism is installed on the outer sleeve of the grain guide pipe 10, and the dust suction end of the dust removal mechanism is connected to the cavity formed by the drying cylinder 1 and the dust removal box 2;

[0028] A gate tube 9 is arranged above the middle of the inner bottom end of the pit box 3, and the gate tube 9 is sleeved on the outside of the grain guide tube 10. Both sides of the upper end of the gate tube 9 are hinged with lifting rods 18, and the lifting rods 18 are also hinged with the pit box 3;

[0029] A baffle 13 is installed on the inner side of the upper end of the grain guide pipe 10 corresponding to the drying cylinder 1, and mounting rods 14 are installed on both sides of the baffle 13. The mounting rods 14 are connected to the inner wall of the drying cylinder 1. When the bottom of the baffle ring 17 contacts the inner bottom end of the cone of the dust removal box 2, the upper end of the baffle ring 17 is sealed around the outer side of the lower end of the grain guide pipe 10;

[0030] See also Figure 1 — Figure 3As shown, when the rice is dried, the rice is poured into the pit box 3 and filled, and then the lifting rods 18 on both sides of the gate tube 9 are pressed downward to form a gap between the bottom of the gate tube 9 and the bottom of the pit box 3. At this time, the high-pressure air intake pipe 4 injects high-temperature and high-pressure gas into the pit box 3 through the high-temperature and high-pressure air pump, and the wet rice in the pit box 3 is lifted upward by the high-temperature and high-pressure gas and injected into the drying cylinder 1 under the action of the connection between the gate tube 9 and the grain guide pipe 10. During the high-speed flow of the rice, a large amount of surface moisture is vaporized and discharged from the exhaust gas exhaust pipe 5; at the same time, it is impacted by the high-speed flowing gas and hits the baffle 13 and scatters to the bottom of the drying cylinder 1 and the dust removal box 2;

[0031] At this time, the retaining ring 17 is in an open state, that is, the retaining ring 17 does not form a seal on the gap between the dust removal box 2 and the grain guide pipe 10, so that the scattered rice continues to fall downward into the pit box 3, and the cycle is repeated until the drying requirement is met. At this time, the electric push rod 15 is started, and the electric push rod 15 drives the retaining ring 17 to descend, thereby completing the sealing of the gap between the dust removal box 2 and the grain guide pipe 10, and then completing the collection through the grain unloading pipe 8. In the above-mentioned rice drying process, the high-temperature and high-pressure gas is used to achieve sufficient drying of the rice, and the high-temperature drying and collection of the rice are integrated into a design, which can also complete the rice pest control and is easy to operate.

[0032] Embodiment 2:

[0033] This embodiment is used to solve the problem that smoke and dust are generated during the rice drying process and the dust cannot be collected synchronously.

[0034] See also Figure 1 - Figure 4 As shown, a grain drying and dust removal device of the present embodiment includes a dust removal mechanism installed on the outer sleeve of a grain guide pipe 10, the dust suction end of the dust removal mechanism is connected to the cavity formed by the drying cylinder 1 and the dust removal box 2, the dust removal mechanism includes a dust removal cylinder 11 and a dust suction pipe 7, the dust removal cylinder 11 is sleeved on the outside of the grain guide pipe 10, the lower end of the dust removal cylinder 11 is provided with annular blades 12 distributed at intervals, the dust suction pipe 7 is installed in the box part of the dust removal box 2 corresponding to the annular blade 12, and the dust suction pipe 7 is connected to the dust collector, the inner end of the dust suction pipe 7 extends into the annular blade 12, the upper end of the dust removal cylinder 11 is penetrated by an outward-facing blast inlet pipe 6, and the blast inlet pipe 6 is connected to the blower;

[0035] The bottom of the dust collecting cylinder 11 is sealed, and a plurality of annular blades 12 are connected, the lower ends of the annular blades 12 are inclined toward the outside, and the lower ends of the upper annular blades 12 cover the outer sides of the upper ends of the lower annular blades 12;

[0036] The lower end of the bottom of the dust removal box 2 is equipped with symmetrically distributed electric push rods 15, the output end of the electric push rods 15 faces downward and is equipped with a fixing frame 16, the fixing frame 16 passes through the dust removal box 2 and extends to the end inside and is equipped with a retaining ring 17, the retaining ring 17 is funnel-shaped and seals the gap between the dust removal box 2 and the grain guide pipe 10;

[0037] See also Figure 2 - Figure 4 As shown, during the drying process of the rice, the dust of the rice is also removed simultaneously, and the specific steps are as follows: while the rice is drying, the air inlet pipe 6 is connected to the blower, and the dust suction pipe 7 is connected to the dust collector equipment. When the rice is impacted by the grain guide pipe 10 onto the baffle 13 and then scattered downward to the outside of the dust removal box 2, the dust mixed in the rice enters the dust removal cylinder 11 through the gap of the annular blade 12 under the joint action of the air inlet pipe 6 and the dust suction pipe 7. Under the continuous outward suction of the dust suction pipe 7, the dust is discharged through the dust suction pipe 7 to complete the collection. The structural design that the lower end of the annular blade 12 on the upwind side covers the outer side of the upper end of the annular blade 12 on the lower side can effectively avoid the phenomenon of rice being accidentally sucked in, and achieve the purpose of precise dust removal. Combined with the rice drying in the above-mentioned embodiment one, the rice processing integrating drying and dust removal is completed, and the rice finished product rate is improved.

[0038] In combination with Example 1 and Example 2, continuous drying and pest control of rice are achieved by continuously feeding rice and drying it with high-temperature airflow, and the rice processing is highly continuous and the material collection is convenient. In addition, the dust removal structure designed in conjunction with the drying can be used to effectively and accurately remove dust from the rice while it is drying. The mutual use of the two achieves synchronous drying and dust removal without damaging the quality of the rice, thereby improving the rice yield and processing efficiency.

[0039] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A grain drying and dust removal device, comprising a drying cylinder (1), It is characterized in that A dust removal box (2) is installed at the lower end of the drying cylinder (1), a pit box (3) is provided at the bottom of the dust removal box (2), a grain guide pipe (10) is installed in the middle of the drying cylinder (1) and the dust removal box (2), the bottom end of the grain guide pipe (10) extends into the pit box (3), a high-pressure air intake pipe (4) is installed at the bottom of the pit box (3), the high-pressure air intake pipe (4) is connected to a high-temperature and high-pressure output air pump, the high-pressure air intake pipe (4) and the grain guide pipe (10) are coaxial, an exhaust gas discharge pipe (5) is installed at the top of the drying cylinder (1), the bottom of the dust removal box (2) is in a conical shape and is installed with a grain unloading pipe (8); a dust removal mechanism is installed on the outside of the grain guide pipe (10), and the dust suction end of the dust removal mechanism is connected to a cavity formed by the drying cylinder (1) and the dust removal box (2).

2. A grain drying and dust removal device according to claim 1, It is characterized in that The dust removal mechanism comprises a dust removal cylinder (11) and a dust suction pipe (7). The dust removal cylinder (11) is sleeved on the outside of the grain guide pipe (10). The lower end of the dust removal cylinder (11) is provided with annular blades (12) distributed at intervals. The dust suction pipe (7) is installed in the box body part of the dust removal box (2) corresponding to the annular blade (12), and the dust suction pipe (7) is connected to the dust collector. The inner end of the dust suction pipe (7) extends into the annular blade (12). The upper end of the dust removal cylinder (11) is penetrated by an outward-facing air inlet pipe (6), and the air inlet pipe (6) is connected to the blower.

3. A grain drying and dust removal device according to claim 2, It is characterized in that The bottom of the dust removal cylinder (11) is sealed, and a plurality of the annular blades (12) are connected, the lower ends of the annular blades (12) are inclined toward the outside, and the lower ends of the annular blades (12) located above cover the outer sides of the upper ends of the annular blades (12) located below.

4. A grain drying and dust removal device according to claim 1, It is characterized in that The lower end of the bottom of the dust removal box (2) is equipped with symmetrically distributed electric push rods (15), the output end of the electric push rods (15) faces downward and is equipped with a fixing frame (16), the fixing frame (16) penetrates the dust removal box (2) and extends to the end inside thereof and is equipped with a retaining ring (17), the retaining ring (17) is funnel-shaped and is sealed to the gap between the dust removal box (2) and the grain guide pipe (10).

5. A grain drying and dust removal device according to claim 1, It is characterized in that A gate tube (9) is arranged above the middle of the inner bottom end of the pit box (3), and the gate tube (9) is sleeved on the outside of the grain guide tube (10). Both sides of the upper end of the gate tube (9) are hinged with lifting rods (18), and the lifting rods (18) are also hinged with the pit box (3).

6. A grain drying and dust removal device according to claim 1, It is characterized in that A baffle (13) is installed on the inner side of the drying cylinder (1) corresponding to the upper end of the grain guide pipe (10), and mounting rods (14) are installed on both sides of the baffle (13), and the mounting rods (14) are connected to the inner wall of the drying cylinder (1).

7. A grain drying and dust removal device according to claim 4, It is characterized in that When the bottom of the retaining ring (17) contacts the inner bottom end of the cone of the dust removal box (2), the upper end of the retaining ring (17) is wrapped and sealed around the outer side of the lower end of the grain guide pipe (10).

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