Negative pressure collector for loose grain in grain warehouse

Abstract

This utility model discloses a negative pressure collector for loose grain in a grain warehouse, comprising a suction system and a collection bucket. The suction system has a filter screen and a feed inlet. The suction system draws in material through the feed inlet, and the filter screen blocks the material drawn in by the suction system from entering the collection bucket. A sieving mechanism is provided between the suction system and the collection bucket to sieve the material drawn in by the suction system. This utility model, through innovative design, significantly improves the efficiency and purity of loose grain collection. Its core advantages lie in the efficient sieving mechanism and the ingenious drive mechanism design. The sieving mechanism effectively separates grain from impurities, improving grain purity and reducing subsequent processing costs. Simultaneously, the mechanism adopts a detachable design, facilitating cleaning and maintenance, preventing impurity accumulation, and extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a negative pressure collector for scattered grain in a grain warehouse. Background Technology

[0002] In the storage, processing, and transportation of grain, the cleaning and collection of loose grain is a crucial step. Traditional grain collectors often collect dust and impurities along with the grain, resulting in a mixture of impurities and dust in the collected grain. This mixed collection method not only reduces the purity and quality of the grain but also increases subsequent grain processing costs. Furthermore, the mixed grain and impurities may cause wear and tear on equipment during later processing, shortening its lifespan and increasing maintenance costs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a negative pressure collector for scattered grain in a grain warehouse, which can effectively separate grain and impurities during the collection process, so as to improve the purity of grain and reduce subsequent processing costs.

[0004] To solve the above-mentioned technical problems, the present invention provides a negative pressure collector for scattered grain in a grain warehouse, comprising a suction system and a collection bucket. The suction system has a filter screen and a feed inlet. The suction system sucks in the material through the feed inlet. The filter screen blocks the material sucked in by the suction system from outside the suction system so that the material can fall into the collection bucket. A screening mechanism for screening the material sucked in by the suction system is provided between the suction system and the collection bucket.

[0005] Furthermore, the suction system includes a suction barrel with an opening at the lower end and a blower. The air outlet of the blower is connected to the upper part of the suction barrel. The feed inlet is opened on the side wall of the suction barrel. The filter screen is disposed inside the suction barrel and the height of the filter screen is between the air outlet and the feed inlet. The sieving mechanism is detachably disposed at the lower part of the suction barrel. The collection barrel is located below the sieving mechanism to receive the material sieved by the sieving mechanism.

[0006] Furthermore, the sieving mechanism includes an outer barrel for connecting to the suction barrel and a sieving box disposed inside the outer barrel. A driving mechanism is provided between the outer barrel and the sieving box. Under the action of the driving mechanism, the sieving box can swing horizontally and move vertically relative to the outer barrel to improve the sieving effect.

[0007] Furthermore, the inner peripheral wall at the upper end of the outer barrel is provided with an internal thread, and the outer peripheral wall at the lower end of the suction barrel is provided with an external thread that matches the internal thread.

[0008] Furthermore, the outer barrel is hollow, and the sieving box is coaxially assembled with the outer barrel in the middle of the outer barrel. The driving mechanism includes a first driving component for driving the sieving box to swing horizontally and a second driving component for driving the sieving box to move vertically. The first driving component and the second driving component are respectively disposed on both sides of the sieving box.

[0009] Furthermore, the first driving component includes a first moving block and a push rod. The first moving block is fixedly disposed on the outer periphery of the sieve box, and the push rod is disposed inside the outer barrel and can slide along the circumference of the outer barrel. The push rod is connected to the first moving block, thereby the push rod pushes the first moving block to move along the circumference of the outer barrel.

[0010] Furthermore, the inner circumference of the outer barrel is provided with a first groove along its own circumferential direction, the first moving block is slidably connected to the first groove, one end of the first groove is provided with a sliding groove communicating with the first groove, the sliding groove is located inside the outer barrel and is provided along the circumferential direction of the outer barrel, the push rod is matched with the sliding groove and can slide along the circumferential direction in the sliding groove to extend into or out of the first groove.

[0011] An air passage is formed at the end of the slide groove away from the first groove. A sealing slider that is slidably connected to the slide groove is provided at the end of the push rod near the air passage. An inner groove is opened at the end of the air passage away from the slide groove, and an air pump that communicates with the air passage is provided in the inner groove.

[0012] Furthermore, the second driving component includes a second moving block. The inner circumference of the outer barrel is provided with a second groove along its own circumference. The upper wall of the second groove is wavy. The second moving block can slide along the second groove and includes a second upper part, a second lower part, and a second helical spring connecting the second upper part and the second lower part. The upper end of the second upper part is an arch shape that matches the wavy upper wall of the second groove. The lower end of the second lower part contacts the bottom wall of the second groove. The second helical spring is fixedly disposed on the upper end face of the second lower part. The second upper part is fixedly disposed on the upper end of the second helical spring. The second upper part is fixedly connected to the sieve box.

[0013] Furthermore, the lower end of the outer barrel is coaxially provided with a flange, and the lower end of the flange is recessed with an annular groove. The inner diameter of the annular groove matches the collection barrel so that the upper edge of the collection barrel can be inserted into it. A sealing ring is also provided in the annular groove to enhance the sealing between the collection barrel and the outer barrel.

[0014] Furthermore, it also includes a base plate and casters. The suction system and the collection bucket are both mounted on the base plate. There are four casters, and the four casters are rectangularly distributed at the four corners of the lower end face of the base plate.

[0015] This utility model discloses a negative pressure collector for loose grain in grain silos, which has at least the following beneficial effects: Through innovative design, it significantly improves the efficiency and purity of loose grain collection. Its core advantages lie in its efficient sieving mechanism and ingenious drive mechanism design. The sieving mechanism effectively separates grain from impurities, improving grain purity and reducing subsequent processing costs. Simultaneously, the mechanism adopts a detachable design, facilitating cleaning and maintenance, preventing impurity accumulation, and extending the equipment's service life. The drive mechanism cleverly achieves both horizontal swinging and vertical movement of the sieving box, not only enhancing the sieving effect but also simplifying the equipment structure and reducing costs. Furthermore, the application of negative pressure suction technology improves collection efficiency, reduces dust pollution, and improves the working environment. The casters at the bottom of the equipment further enhance operational flexibility. In summary, this utility model, through optimized sieving and drive mechanisms, solves many shortcomings of existing technologies and has significant practical value and market potential. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an embodiment of the negative pressure collector for scattered grain in a grain warehouse according to the present invention.

[0018] Figure 2 This is a schematic diagram of the suction bucket in one embodiment of the negative pressure collector for scattered grain in a grain warehouse according to the present invention.

[0019] Figure 3 This is a schematic diagram of the sieving mechanism in one embodiment of the negative pressure collector for loose grain in a grain warehouse according to this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the sieving mechanism in one embodiment of the negative pressure collector for loose grain in a grain warehouse according to this utility model. Figure 2 ;

[0021] Figure 5 This is a partial cross-sectional view of the sieving mechanism in one embodiment of the negative pressure collector for scattered grain in a grain warehouse according to the present invention.

[0022] Figure 6This is a schematic diagram of the structure of the sieve box and the first moving block in one embodiment of the negative pressure collector for scattered grain in a grain warehouse according to the present invention.

[0023] Figure 7 This is a schematic diagram of the sieving mechanism in one embodiment of the negative pressure collector for loose grain in a grain warehouse according to this utility model. Figure 3 .

[0024] The meanings of the labels in the attached diagram are as follows:

[0025] Suction system 1, suction tank 11, external thread 111, fan 12, filter screen 13, connecting pipe 14, feed inlet 15;

[0026] Collection bucket 2;

[0027] Screening mechanism 3, outer barrel 31, internal thread 311, flange 312, annular groove 313, sealing ring 314, screening box 32, driving mechanism 33, first driving assembly 331, first upper part 3311, first lower part 3312, first helical spring 3313, first groove 3314, push rod 3315, air passage 3316, sealing slider 3317, inner groove 3318, air pump 3319, second driving assembly 332, second upper part 3321, second lower part 3322, second helical spring 3323, second groove 3324;

[0028] Base plate 4, casters 41, uprights 42. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Please refer to Figure 1 The present invention relates to a negative pressure collector for scattered grain in a grain warehouse, comprising a suction system 1, a collection tank 2, and a screening mechanism 3 disposed between the suction system 1 and the collection tank 2 for screening the material suctioned by the suction system 1. It also includes a base plate 4 for mounting the suction system 1 and the collection tank 2, wherein four casters 41 are respectively provided at the four corners of the lower end face of the base plate 4 to facilitate the movement of the entire device.

[0031] Please refer to Figure 2The suction system 1 includes a suction bucket 11 with an open lower end and a fan 12. The suction bucket 11 is located at the rear of the upper surface of the base plate 4. Vertical support rods 42 are provided on both sides of the front of the base plate 4, and the suction bucket 11 is fixedly positioned between the two support rods 42. The fan 12 is connected to the suction bucket 11 via a connecting pipe 14, through which the fan 12 can draw air from or blow air into the suction bucket 11. The connecting pipe 14 is located at the upper part of the suction bucket 11. A feed inlet 15 is provided on the lower front side of the suction bucket 11, which is used to connect the suction pipe and the suction head (the suction pipe and suction head of a vacuum cleaner are visible; this is a relatively mature existing technology and is not shown in the figure). A filter screen 13 is also provided inside the suction bucket 11. The filter screen 13 is a cylindrical shape with an open top, and its height is located between the air inlet and the feed inlet 15. When the blower 12 draws in air, the strong suction draws in scattered grains and impurities through the feed inlet 15. After entering the suction tank 11, the material is blocked by the filter screen 13, thus preventing it from entering the connecting pipe 14. The material with weight falls downward into the collection tank 2, while dust is adsorbed on the outside of the filter screen 13.

[0032] The collection bucket 2 is located at the lower part of the suction bucket 11 to receive the material falling from the suction bucket 11. The sieving mechanism 3 is located between the suction bucket 11 and the collection bucket 2. Specifically, the sieving mechanism 3 is detachably connected to the lower part of the suction bucket 11.

[0033] Please refer to Figures 3 to 7 The sieving mechanism 3 includes an outer barrel 31 for connection with the suction barrel 11, a sieving box 32 disposed inside the outer barrel 31, and a driving mechanism 33 disposed between the outer barrel 31 and the sieving box 32. Under the action of the driving mechanism 33, the sieving box 32 can swing horizontally and move vertically relative to the outer barrel 31 to improve the sieving effect.

[0034] The outer barrel 31 is hollow, and its inner diameter matches the outer diameter of the suction barrel 11. The inner circumferential wall at the upper end of the outer barrel 31 is provided with an internal thread 311, and the outer circumferential wall at the lower end of the suction barrel 11 is provided with an external thread 111 that matches the internal thread 311. A flange 312 is coaxially provided at the lower end of the outer barrel 31, and an annular groove 313 is recessed upwards at the lower end of the flange 312. The inner diameter of the annular groove 313 matches the collecting barrel 2 so that the upper edge of the collecting barrel 2 can be inserted into it. A sealing ring 314 is also provided in the annular groove 313 to enhance the sealing between the collecting barrel 2 and the outer barrel 31. The sieving box 32 is coaxially assembled with the outer barrel 31 in the middle of the outer barrel 31. The driving mechanism 33 includes a first driving component 331 for driving the sieve box 32 to swing horizontally and a second driving component 332 for driving the sieve box 32 to move vertically. The first driving component 331 and the second driving component 332 are respectively disposed on both sides of the sieve box 32.

[0035] The first drive assembly 331 includes a first moving block and a push rod 3315. The first moving block includes a first upper portion 3311, a first lower portion 3312, and a first helical spring 3313. The first upper portion 3311 is fixedly connected to the outer periphery of the sieve box 32, one end of the first helical spring 3313 is fixedly connected to the lower end of the first upper portion 3311, and the first lower portion 3312 is fixedly connected to the lower end of the first helical spring 3313. A first groove 3314 is formed on the inner periphery of the outer barrel 31 along its circumferential direction, and the first moving block can slide within the first groove 3314 along its circumferential direction. A sliding groove communicating with the first groove 3314 is formed at one end of the first groove 3314, and the sliding groove is located inside the outer barrel 31 and is formed along its circumferential direction. The push rod 3315 matches the sliding groove and can slide circumferentially within the sliding groove to extend into or retract from the first groove 3314. The push rod 3315 is connected to the first movable block, thereby pushing the first movable block to move circumferentially along the outer barrel 31. Specifically, a strong magnet is provided at the end of the push rod 3315, and a metal sheet is provided on the corresponding side of the first upper portion 3311. An air passage 3316 is formed at the end of the slide groove away from the first groove 3314. A sealing slider 3317 that is slidably connected to the slide groove is provided at the end of the push rod 3315 near the air passage 3316. An inner groove 3318 is opened at the end of the air passage 3316 away from the slide groove. An air pump 3319 that communicates with the air passage 3316 is provided in the inner groove 3318.

[0036] The second drive assembly 332 includes a second moving block, which comprises a second upper portion 3321, a second lower portion 3322, and a second helical spring 3323 connecting the second upper portion 3321 and the second lower portion 3322. The second upper portion 3321 is fixedly connected to the outer periphery of the sieve box 32, one end of the second helical spring 3323 is fixedly connected to the lower end of the second upper portion 3321, and the second lower portion 3322 is fixedly connected to the lower end of the second helical spring 3323. The outer barrel 31 has a second groove 3324 on its inner circumference. The upper wall of the second groove 3324 is wavy. The second moving block can slide in the second groove 3324 along its circumference. Specifically, the upper end of the second upper part 3321 is an arch shape that matches the wavy upper wall of the second groove 3324. When sliding, the upper end of the second upper part 3321 contacts the upper end surface of the wavy second groove 3324, and the lower end of the second lower part 3322 contacts the bottom wall of the second groove 3324.

[0037] One embodiment of the negative pressure collector for loose grain in a grain silo of this utility model operates as follows: When collecting grain, the blower 12 is activated. When the blower 12 draws in air, the strong suction draws the loose grain and impurities together through the feed inlet 15. After entering the suction tank 11, the material is blocked by the filter screen 13, thus preventing it from entering the connecting pipe 14. The material with weight falls downward into the sieving mechanism 3, while dust is adsorbed on the outside of the filter screen 13.

[0038] During device operation, the air pump 3319 is activated. The air pump 3319 cyclically draws in and releases air. During release, gas enters the chute through the air passage 3316 and pushes the push rod 3315 into the first groove 3314. The push rod 3315 pushes the first moving block, thereby moving the sieving box 32. During drawing in air, the push rod 3315 retracts into the chute and drives the sieving box 32 to move via the first moving block, thus achieving the reciprocating movement of the sieving box 32. Simultaneously with the reciprocating rotation of the sieving box 32, the second moving block also moves within the second groove 3324. With the cooperation of the second upper portion 3321 and the wavy upper wall of the second groove 3324, the sieving box 32 moves up and down reciprocally, thereby sieving the grain and promoting the separation of grain and impurities.

[0039] Compared with existing technologies, this utility model's negative pressure grain collector for grain storage significantly improves the efficiency and purity of loose grain collection through innovative design. Its core advantages lie in its highly efficient sieving mechanism and ingenious drive mechanism design. The sieving mechanism effectively separates grain from impurities, improving grain purity and reducing subsequent processing costs. Simultaneously, the mechanism's detachable design facilitates cleaning and maintenance, preventing impurity accumulation and extending equipment lifespan. The drive mechanism cleverly achieves both horizontal swinging and vertical movement of the sieving box, enhancing sieving efficiency, simplifying equipment structure, and reducing costs. Furthermore, the application of negative pressure suction technology improves collection efficiency, reduces dust pollution, and improves the working environment. The casters at the bottom of the device further enhance operational flexibility. In summary, this utility model, through optimized sieving and drive mechanisms, overcomes many shortcomings of existing technologies, possessing significant practical value and market potential.

Claims

1. A negative pressure collector for scattered grain in a grain warehouse, comprising a suction system and a collection tank, characterized in that: The suction system has a filter screen and a feed inlet. The suction system sucks in materials through the feed inlet. The filter screen blocks the materials sucked in by the suction system from entering the system so that the materials can fall into the collection bucket. A sieving mechanism is provided between the suction system and the collection bucket for sieving the materials sucked in by the suction system.

2. The negative pressure collector for scattered grain in a grain warehouse as described in claim 1, characterized in that: The suction system includes a suction barrel with an opening at the bottom and a blower. The air outlet of the blower is connected to the upper part of the suction barrel. The feed inlet is opened on the side wall of the suction barrel. The filter screen is disposed inside the suction barrel and the height of the filter screen is between the air outlet and the feed inlet. The sieving mechanism is detachably disposed at the lower part of the suction barrel. The collection barrel is located below the sieving mechanism to receive the material after it has been sieved by the sieving mechanism.

3. The negative pressure collector for scattered grain in a grain warehouse as described in claim 2, characterized in that: The sieving mechanism includes an outer barrel for connecting to the suction barrel and a sieving box disposed inside the outer barrel. A driving mechanism is provided between the outer barrel and the sieving box. Under the action of the driving mechanism, the sieving box can swing horizontally and move vertically relative to the outer barrel to improve the sieving effect.

4. The negative pressure collector for scattered grain in a grain warehouse as described in claim 3, characterized in that: The inner circumferential wall at the upper end of the outer barrel is provided with an internal thread, and the outer circumferential wall at the lower end of the suction barrel is provided with an external thread that matches the internal thread.

5. The negative pressure collector for scattered grain in a grain warehouse as described in claim 3, characterized in that: The outer barrel is hollow, and the sieving box is coaxially assembled with the outer barrel in the middle of the outer barrel. The driving mechanism includes a first driving component for driving the sieving box to swing horizontally and a second driving component for driving the sieving box to move vertically. The first driving component and the second driving component are respectively disposed on both sides of the sieving box.

6. The negative pressure collector for scattered grain in a grain warehouse as described in claim 5, characterized in that: The first driving component includes a first moving block and a push rod. The first moving block is fixedly disposed on the outer periphery of the sieve box. The push rod is disposed inside the outer barrel and can slide along the circumference of the outer barrel. The push rod is connected to the first moving block so that the push rod pushes the first moving block to move along the circumference of the outer barrel.

7. The negative pressure collector for scattered grain in a grain warehouse as described in claim 6, characterized in that: The outer barrel has a first groove along its circumference. The first moving block is slidably connected to the first groove. One end of the first groove has a sliding groove that communicates with the first groove. The sliding groove is located inside the outer barrel and is opened along the circumference of the outer barrel. The push rod matches the sliding groove and can slide along the circumference in the sliding groove to extend into or out of the first groove. An air passage is formed at the end of the slide groove away from the first groove. A sealing slider that is slidably connected to the slide groove is provided at the end of the push rod near the air passage. An inner groove is opened at the end of the air passage away from the slide groove, and an air pump that communicates with the air passage is provided in the inner groove.

8. The negative pressure collector for scattered grain in a grain warehouse as described in claim 6, characterized in that: The second drive assembly includes a second moving block. The inner circumference of the outer barrel is provided with a second groove along its own circumference. The upper wall of the second groove is wavy. The second moving block can slide along the second groove and includes a second upper part, a second lower part, and a second helical spring connecting the second upper part and the second lower part. The upper end of the second upper part is an arch shape that matches the wavy upper wall of the second groove. The lower end of the second lower part contacts the bottom wall of the second groove. The second helical spring is fixedly disposed on the upper end face of the second lower part. The second upper part is fixedly disposed on the upper end of the second helical spring. The second upper part is fixedly connected to the sieve box.

9. The negative pressure collector for scattered grain in a grain warehouse as described in claim 3, characterized in that: The lower end of the outer barrel is coaxially provided with a flange, and the lower end of the flange is recessed with an annular groove. The inner diameter of the annular groove matches the collection barrel so that the upper edge of the collection barrel can be inserted into it. A sealing ring is also provided in the annular groove to enhance the sealing between the collection barrel and the outer barrel.

10. The grain silo negative pressure collector for spilled grain as described in any one of claims 1 to 9, characterized in that: It also includes a base plate and casters. The suction system and the collection bucket are both mounted on the base plate. There are four casters, and the four casters are distributed in a rectangular shape at the four corners of the lower end face of the base plate.

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