CN114674616A

CN114674616A - Grain sampler

Info

Publication number: CN114674616A
Application number: CN202210362817.8A
Authority: CN
Inventors: 马浩然; 李月; 付鹏程; 彭倍; 李浩杰; 蔡育池; 董晓欢; 刘航波
Original assignee: Central Grain Reserve Changle Direct Warehouse Co ltd; Central Grain Reserve Xiamen Warehouse Co ltd; China Grain Storage Chengdu Storage Research Institute Co ltd
Current assignee: Central Grain Reserve Changle Direct Warehouse Co ltd; Central Grain Reserve Xiamen Warehouse Co ltd; China Grain Storage Chengdu Storage Research Institute Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-06-28

Abstract

The invention discloses a grain sampler, which comprises a cylinder, a grain suction pipe, supporting legs, a negative pressure machine, a filtering device, a grain feeding funnel and a rotary valve, wherein the grain suction pipe is arranged on the cylinder; the negative pressure machine, the filtering device, the grain feeding funnel and the rotary valve are sequentially arranged in the cylinder body from top to bottom; the rotary valve comprises a shell, a motor, a rotating shaft and blades; the shell is cylindrical; the rotating shaft is arranged at the axis of the shell; the blades are fixedly arranged on the circumferential direction of the rotating shaft; the end part of the blade far away from the rotating shaft is tightly attached to the inner wall of the shell; the top of the shell is provided with a feeding port, and the bottom of the shell is provided with a discharging port; the bottom of the grain feeding funnel is hermetically connected with the feeding port. The invention adopts negative pressure to suck grain, the grain is sucked into the cylinder through the grain sucking pipe, the grain sucked into the cylinder falls into the rotary valve through the grain inlet funnel under the action of gravity, and the rotary blades of the rotary valve play roles of sealing and material conveying, thereby preventing normal pressure gas from entering the cylinder and smoothly discharging the grain from the cylinder.

Description

Grain sampler

Technical Field

The invention relates to grain sampling equipment, in particular to a grain sampler.

Background

National grains are stored with corn, rice, wheat, soybean and the like and are mainly stored in horizontal warehouses, squat warehouses and vertical silos. The horizontal warehouse is 7m high, the squat round warehouse is 20 m-30 m high, and the vertical silo is 30 m-40 m high. In the process of grain storage, abnormal conditions of grain such as local heating, mildew and the like can occur. At the moment, the abnormal grain edible pipelines at the deep layers of the squat silo and the vertical silo need to be pumped out, detected and processed.

The grain sampler is a special equipment designed and manufactured for automatic sampling of grain depot. The grain sucking and sampling are carried out through the grain sucking rod, the purpose is to detect grain samples sampled randomly after the grains are put in storage, and whether the grain samples have abnormal samples or not is verified through detecting impurity rate, water content and volume weight of the samples.

The existing sampler mainly has an air suction type and a winch cage type. The air suction type has the characteristics of large flow, heavy equipment, large volume, short height lift and long parallel distance. The spiral cage type has the characteristics of large flow, heavy equipment, small size and short running distance.

In conclusion, the existing grain sampler has the problems of heavy equipment, large volume, inconvenient movement and the like.

Disclosure of Invention

In view of this, the present invention aims to provide a grain sampler with a compact structure for convenient use.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a grain sampler comprises a cylinder, a grain suction pipe, supporting legs, a negative pressure machine, a filtering device, a grain feeding funnel and a rotary valve; the negative pressure machine, the filtering device, the grain feeding funnel and the rotary valve are sequentially arranged in the barrel body from top to bottom; a grain inlet is formed in the side wall of the cylinder body and is positioned between the filtering device and the grain inlet funnel; the grain suction pipe is connected to the grain inlet; the bottom of the cylinder body is provided with a grain outlet which is arranged below the rotary valve; the supporting legs are fixedly arranged at the lower part of the cylinder body; the rotary valve comprises a shell, a motor, a rotating shaft and blades; the shell is cylindrical; the rotating shaft is arranged at the axis of the shell; the blades are fixedly arranged on the circumferential direction of the rotating shaft; the end part of the blade far away from the rotating shaft is tightly attached to the inner wall of the shell; the motor is arranged outside the shell, and the rotating shaft is in transmission connection with the motor; the top of the shell is provided with a feeding port, and the bottom of the shell is provided with a discharging port; the bottom of the grain feeding funnel is connected with the feeding port in a sealing manner.

In some embodiments, the rotary valve further comprises a speed reducer; the speed reducer is arranged outside the shell; the rotating shaft is in transmission connection with the motor through the speed reducer.

In some embodiments, the rotary valve further comprises a stationary plate; the speed reducer is connected to the shell through the fixing plate.

In some embodiments, the skewer further comprises a heat sink, the heat sink being wrapped outside the motor.

In some embodiments, the skewer further comprises a grain discharge drum disposed at the bottom of the barrel; and the grain outlet barrel is positioned below the rotary valve.

In some embodiments, the skewer further comprises a roller mounted to a bottom of the support leg.

In some embodiments, the filtration device comprises a screen, a support frame, and a locking frame; the filter screen is clamped between the support frame and the locking frame; the support frame is fixedly connected or detachably connected to the inner wall of the cylinder body; the locking frame is detachably connected to the supporting frame.

In some embodiments, the outer edge of the locking shelf is provided with a plurality of protrusions; the inner side of the support frame is provided with a plurality of clamping grooves matched with the protrusions for use.

In some embodiments, the negative pressure machine is removably attached to the top of the barrel.

In some embodiments, the skewer further comprises a hinge; the negative pressure machine is hinged to the top of the barrel through the hinge piece.

In summary, compared with the prior art, the invention has the following advantages and beneficial effects: the invention adopts negative pressure to suck grain, is convenient and labor-saving, and has light equipment and high efficiency; in inhaling the barrel with grain through inhaling the grain pipe, particulate matters such as dust in the grain can be blockked by filter equipment and adsorb, and grain after being inhaled the barrel falls into the rotary valve through advancing the grain funnel under the action of gravity in, relies on the rotatory blade of rotary valve to play sealed and material transport's effect, prevents that atmospheric pressure gas from entering into the barrel in, can arrange the material from the barrel smoothly again and go out with grain.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the internal structure of the cartridge according to the present invention.

Fig. 3 is a schematic perspective view of a rotary valve according to the present invention.

Fig. 4 is a front sectional view of the rotary valve of the present invention.

FIG. 5 is a schematic top sectional view of a rotary valve according to the present invention.

Fig. 6 is a sectional view along a-a in fig. 4.

FIG. 7 is a schematic view of the structure of the filter device of the present invention.

The explanation of each reference number in the figure is: inhale grain pipe 1, gyro wheel 2, supporting leg 3, barrel 4, lead wire pipe 5, radiator 6, negative pressure machine 7, filter equipment 8, advance grain funnel 9, rotary valve 10, go out grain section of thick bamboo 11, advance grain mouth 12, go out grain mouth 13, motor 14, reduction gear 15, fixed plate 16, casing 17, pivot 18, blade 19, material loading mouth 20, feed opening 21, hinge spare 22, support frame 23, locking frame 24, filter screen 25, draw-in groove 26, arch 27.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms first, second and the like, if any, are used for distinguishing technical features only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 and fig. 2, a grain sampler according to an embodiment of the present application includes a barrel 4, a grain suction pipe 1, support legs 3, a negative pressure machine 7, a filter device 8, a grain feeding funnel 9 and a rotary valve 10.

Supporting legs 3 welded fastening is around the outside of barrel 4 lower part for support whole barrel 4, raise the stack shell and let grain flow out smoothly.

It is also possible to install a roller 2 at the bottom of each support leg 3 to facilitate free movement of the entire device.

The negative pressure machine 7, the filtering device 8, the grain feeding funnel 9 and the rotary valve 10 are sequentially arranged in the barrel body 4 from top to bottom.

The side wall of the cylinder 4 is provided with a grain inlet 12, and the grain inlet 12 is positioned between the filtering device 8 and the grain inlet funnel 9. The grain suction pipe 1 is connected to the grain inlet 12.

The bottom of the cylinder body 4 is provided with a grain outlet 13, and the grain outlet 13 is positioned below the rotary valve 10.

As shown in fig. 3-6, the rotary valve 10 includes a housing 17, a motor 14, a shaft 18, and a vane 19.

The housing 17 is cylindrical. The rotating shaft 18 is disposed at the axial center of the housing 17. The plurality of blades 19 are fixedly disposed in the circumferential direction of the rotating shaft 18. The end of the blade 19 far away from the rotating shaft 18 is tightly attached to the inner wall of the shell 17.

The motor 14 is arranged outside the shell 17, and the rotating shaft 18 is in transmission connection with the motor 14.

The top of the housing 17 has a feed opening 20 and the bottom of the housing 17 has a discharge opening 21. The bottom of the grain feeding funnel 9 is hermetically connected with the feeding port 20.

In the embodiment of the application, the cylinder body 4 mainly works by generating negative pressure by the negative pressure machine 7, and grains are sucked into the cylinder body 4 through the grain sucking pipe 1. Particulate matters such as dust in the grain are blocked and adsorbed by the filtering device 8 to avoid causing damage to the negative pressure machine 7. Because the grain such as wheat, corn grain, etc. has larger diameter and larger weight, the grain is sucked into the cylinder 4 and then can not be adsorbed on the filtering device 8, and can fall into the rotary valve 10 through the grain feeding funnel 9 under the action of gravity.

The grain feeding funnel 9 can be welded in the cylinder 4, and meanwhile, the grain feeding funnel 9 can also be used as a positioning reference of the rotary valve 10.

A lead pipe 5 can be installed on the side wall outside the cylinder 4 to lead the control line of the rotary valve 10 to the connection port of the negative pressure machine 7 for connection.

In some embodiments, the negative pressure machine 7 is removably mounted on top of the barrel 4 and sealed by a rubber ring to prevent air leakage. The negative pressure machine 7 can be hinged to the cylinder 4 by means of a hinge element, such as a hinge element 22.

In the embodiment of the application, rotary valve 10 has two effects at least, firstly because blade 19 keeps away from the tip of pivot 18 and the inner wall of casing 17 closely laminate, make the shape that blade 19 formed when rotating unanimous with casing 17's inner chamber shape, lead to the air can't enter into in the barrel 4 through between blade 19 and the casing 17, rotary valve 10 can avoid outside air to enter into in the barrel 4 on the whole, inhale grain pipe 1 and become the sole air inlet source of negative pressure machine 7, thereby can guarantee that negative pressure machine 7 can produce suction to inhaling grain pipe 1, can inhale grain in the barrel 4 from inhaling grain pipe 1. Secondly, along with the rotation of the blade 19, the grain entering the rotary valve 10 is driven to move from the feeding port 20 to the discharging port 21, and finally discharged out of the barrel 4 through the discharging port 21, so that the grain discharging is realized. In summary, in the embodiment of the present application, the rotary valve 10 functions as a seal and a material transportation by virtue of the rotating blades 19, so as to prevent atmospheric gas from entering the cylinder 4, and to smoothly discharge grains from the cylinder 4.

In some embodiments, the end of the blade 19 remote from the shaft 18 may be spaced from the inner wall of the housing 17 by a small gap, which is sufficient to ensure that no grain enters, and therefore the gap is very small, typically not more than 1 mm. In this way, the blade 19 has a higher degree of freedom in assembly with the housing 17. The air that this clearance can pass through is also very limited, and in addition there is the hindrance of grain, also can realize sealed function basically.

In some embodiments, as shown in fig. 3-5, the rotary valve 10 further includes a speed reducer 15, the speed reducer 15 being disposed outside the housing 17, such as being connected to the housing 17 by a fixed plate 16. The rotating shaft 18 is in transmission connection with the motor 14 through the speed reducer 15. The speed reducer 15 can adjust the rotating speed of the blades 19, thereby adjusting the grain discharging speed.

The heat sink 6 can be wrapped outside the motor 14 to improve the heat dissipation capability, so that the motor 14 has a better working environment, and the service life of the motor is further prolonged.

In the embodiment of the present application, the two ends of the rotating shaft 18 may be fixed to the housing 17 by a bearing. A cushion rubber pad may be installed at the connection of the rotation shaft 18 and the motor 14 or the decelerator 15 to play a role of buffering when transmitting rotation.

In some embodiments, in order to make the discharging of the device more standard, as shown in fig. 2, a grain discharging barrel 11 is arranged at the bottom of the barrel body 4, and the grain discharging barrel 11 is positioned below the rotary valve 10. In this way, the grain brought out by the rotary valve 10 enters the grain outlet tube 11 again, and is conveniently collected after being intensively guided by the grain outlet tube 11.

As shown in fig. 2 and 7, the filtering device 8 includes a filtering net 25, a supporting frame 23 and a locking frame 24. The filter net 25 is held between the support frame 23 and the locking frame 24. The supporting frame 82 is fixedly connected or detachably connected to the inner wall of the cylinder 4; the locking bracket 24 is detachably connected to the supporting bracket 23. For example, the support frame 82 may be directly welded to the inner wall of the cylinder 4, or may be fixed to the inner wall of the cylinder 4 by a connector such as a bolt. The locking bracket 24 is used to clamp the filter net 25 to the support bracket 23 to ensure the filtering effect. The locking bracket 24 is designed in a detachable manner to facilitate later replacement of the filter screen 25.

In some embodiments, the outer edge of the locking shelf 24 is provided with a plurality of protrusions 27; the inner side of the supporting frame 23 is provided with a plurality of clamping grooves 26 matched with the protrusions 27 for use. So for be rotation fit between locking frame 24 and the support frame 23, pave filter screen 25 in support frame 23, aim at the draw-in groove 26 of support frame 23 with locking frame 24's arch 27, then compress tightly rotatory can install the completion to latched position, filter screen 25 changes conveniently, convenient high-efficient.

The grain sampler in the embodiment of the application not only is convenient to use in a granary, but also can work on the tops of a shallow round bin and a vertical silo, and the working site is small in limitation. The negative pressure grain suction is adopted, the convenience and labor saving are realized, the equipment is light, and the efficiency is high. The equipment can work continuously, abnormal grain conditions in the deep can be sucked out by matching with the pipe discharging equipment, the equipment works continuously, the grain suction amount per hour can reach 600 kg-2 t, the manual work is reduced, and the working efficiency is increased.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above preferred embodiments should not be considered as limiting the invention, which is subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and should be considered to be within the scope of the invention.

Claims

1. The utility model provides a grain sampler which characterized in that: the sampler comprises a cylinder (4), a grain suction pipe (1), supporting legs (3), a negative pressure machine (7), a filtering device (8), a grain feeding funnel (9) and a rotary valve (10);

the negative pressure machine (7), the filtering device (8), the grain feeding funnel (9) and the rotary valve (10) are sequentially arranged in the barrel body (4) from top to bottom;

a grain inlet (12) is formed in the side wall of the cylinder body (4), and the grain inlet (12) is positioned between the filtering device (8) and the grain inlet funnel (9); the grain suction pipe (1) is connected to the grain inlet (12);

the bottom of the cylinder body (4) is provided with a grain outlet (13), and the grain outlet (13) is positioned below the rotary valve (10);

the supporting legs (3) are fixedly arranged at the lower part of the cylinder body (4);

the rotary valve (10) comprises a shell (17), a motor (14), a rotating shaft (18) and blades (19);

the shell (17) is cylindrical; the rotating shaft (18) is arranged at the axis of the shell (17); the blades (19) are fixedly arranged on the circumferential direction of the rotating shaft (18); the end part of the blade (19) far away from the rotating shaft (18) is tightly attached to the inner wall of the shell (17);

the motor (14) is arranged outside the shell (17); the rotating shaft (18) is in transmission connection with the motor (14);

the top of the shell (17) is provided with a feeding port (20), and the bottom of the shell (17) is provided with a discharging port (21);

the bottom of the grain feeding funnel (9) is hermetically connected with the feeding port (20).

2. The grain sampler of claim 1, wherein: the rotary valve (10) further comprises a speed reducer (15); the speed reducer (15) is arranged outside the shell (17); the rotating shaft (18) is in transmission connection with the motor (14) through the speed reducer (15).

3. The grain sampler of claim 2, wherein: the rotary valve (10) further comprises a fixed plate (16); the speed reducer (15) is connected to the housing (17) through the fixing plate (16).

4. A grain sampler as claimed in any one of claims 1 to 3 wherein: the sampler also comprises a radiator (6), and the radiator (6) is wrapped outside the motor (14).

5. The grain sampler of claim 1, wherein: the sampler further comprises a grain discharging barrel (11), and the grain discharging barrel (11) is arranged at the bottom of the barrel body (4); and the grain outlet barrel (11) is positioned below the rotary valve (10).

6. The grain sampler of claim 1, wherein: the sampler also comprises rollers (2), and the rollers (2) are arranged at the bottoms of the supporting legs (3).

7. The grain sampler of claim 1, wherein: the filtering device (8) comprises a filter screen (25), a supporting frame (23) and a locking frame (24); the filter screen (25) is clamped between the support frame (23) and the locking frame (24); the support frame (82) is fixedly connected or detachably connected to the inner wall of the cylinder body (4); the locking frame (24) is detachably connected to the support frame (23).

8. The grain sampler of claim 7, wherein: a plurality of bulges (27) are arranged on the outer edge of the locking frame (24); the inner side of the support frame (23) is provided with a plurality of clamping grooves (26) matched with the protrusions (27) for use.

9. The grain sampler of claim 7 or 8, wherein: the negative pressure machine (7) is detachably connected to the top of the barrel (4).

10. The grain sampler of claim 9, wherein: the sampler further comprises a hinge member (22); the negative pressure machine (7) is hinged to the top of the barrel (4) through the hinge piece (22).