CN219024550U

CN219024550U - Cereal sample grinding device

Info

Publication number: CN219024550U
Application number: CN202223607765.0U
Authority: CN
Inventors: 杨明; 孙文闪; 尤坚萍; 章路; 周婷婷; 邢丽丽; 傅国斌; 王荣慧; 潘璐
Original assignee: Greentown Nongke Detection Technology Co ltd; Hangzhou Haomusi Food Co Ltd
Current assignee: Greentown Nongke Detection Technology Co ltd; Hangzhou Haomusi Food Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-16
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a grain sample grinding device, which particularly belongs to the technical field of pretreatment sample preparation, and comprises a hollow grinding barrel, a grinding disc, a rotary driving motor, an elastic piece and a sliding rod; the output end of the rotary driving motor is eccentrically fixed with the grinding disc; one end of the grinding disc, which is opposite to the output end, is provided with a containing groove, and the groove wall of the containing groove is provided with a sliding groove matched with the sliding rod; one end of the sliding rod, which is back to the sliding groove, is fixed with the output end; one end of the elastic piece is fixed with the groove wall of the accommodating groove, and the other end of the elastic piece is fixed with the side end of the output end; the upper end of the milling material cylinder is provided with a feed inlet, and the lower end of the milling material cylinder is provided with a discharge outlet. The grain sample grinding device can grind the grain sample to be detected, and the obtained grain sample has the advantage of uniform grain size.

Description

Cereal sample grinding device

Technical Field

The utility model belongs to the technical field of pretreatment sample preparation, and particularly relates to a grain sample grinding device.

Background

In detecting pesticide residues in grains, a grain sample is generally ground into sample powder, and then a purifying reagent and an extracting reagent are added into the sample powder to obtain an on-machine analysis liquid. And analyzing by a chromatographic instrument to obtain a detection result.

In the process of preparing sample powder, the grain sample is usually ground in a mortar, sieved, and the large particles sieved out are ground again in the mortar, sieved again, and the process is repeated to obtain the sample powder meeting the requirements. However, when the sample powder is prepared, repeated grinding takes time and labor, and efficiency cannot be kept up when the laboratory is over-checked.

Disclosure of Invention

The utility model aims to provide a grain sample grinding device which can grind a grain sample to be detected and has the advantage that the obtained grain sample has uniform particle size.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a grain sample grinding device comprises a hollow grinding barrel, a grinding disc, a rotary driving motor, an elastic piece and a sliding rod; the output end of the rotary driving motor is eccentrically fixed with the grinding disc; one end of the grinding disc, which is opposite to the output end, is provided with a containing groove, and the groove wall of the containing groove is provided with a sliding groove matched with the sliding rod; one end of the sliding rod, which is back to the sliding groove, is fixed with the output end; one end of the elastic piece is fixed with the groove wall of the accommodating groove, and the other end of the elastic piece is fixed with the side end of the output end; the upper end of the milling material cylinder is provided with a feed inlet, and the lower end of the milling material cylinder is provided with a discharge outlet.

Preferably, the side end of the milling barrel is provided with a rotating groove for the adapting output end to penetrate into, and a rotating bearing is fixedly arranged in the rotating groove.

Preferably, one end of the grinding material cylinder, which is opposite to the rotary driving motor, is provided with an arc-shaped slip part, and the cross section of the arc-shaped slip part is triangular.

Preferably, a sealing cover is arranged at the open end of the grinding material cylinder, which is opposite to the rotary driving motor, and the sealing cover is in threaded connection with the open end.

Preferably, the lower end of the milling barrel further comprises a fixing support, the fixing support comprises an arc-shaped supporting rod, an upper fixing rod, a lower fixing sleeve rod, a locking screw and a fixing foot, one end of the upper fixing rod is fixed with the arc-shaped supporting rod, the other end of the upper fixing rod is connected with the lower fixing sleeve rod in a sliding mode, correspondingly, a sliding groove matched with the upper fixing rod is formed in the upper end of the lower fixing sleeve rod, a threaded hole is formed in the lower fixing sleeve rod, the locking screw is in threaded hole, and the fixing foot is fixed with one end of the lower fixing sleeve rod, which faces away from the upper fixing rod, in a sliding mode.

Preferably, the discharging hole is provided with a discharging pipe, and the feeding hole is provided with a feeding hopper.

Preferably, the elastic member is a spring.

Compared with the prior art, the utility model has the beneficial effects that:

the grain sample powder particles prepared by using the grain sample grinding device are relatively uniform, and the grain sample powder particles are suitable for grinding small-sized samples in a single batch in a laboratory. Because the samples of different batches need to be ground independently, the grain sample volume is small, the characteristics of a lot number are high, so that the existing manual mortar grinding and machine grinding modes are not applicable, and the grain sample grinding device provided by the utility model has the advantages.

Drawings

FIG. 1 is a schematic diagram of a milling device for cereal samples according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a milling device for grain samples according to the present utility model;

fig. 3 is a schematic cross-sectional view of a grain sample grinding apparatus according to the present utility model.

In the figure: 1. grinding barrel 11, rotary driving motor 12, sealing cover 13, blanking pipe 14, feeding hopper 15, arc supporting rod 16, upper fixed rod 17, locking screw 18, lower fixed sleeve rod 19, fixed foot 20, arc sliding part 21, grinding disc 22, output end 23, rotary bearing 24, elastic component 25, sliding rod 26, sliding groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, a grain sample milling apparatus comprises a hollow milling cylinder 1, a milling disc 21, a rotation driving motor 11, an elastic member 24 and a slide rod 25; the output end 22 of the rotary driving motor 11 and the grinding disc 21 are eccentrically fixed; the end of the grinding disc 21, which is away from the output end 22, is provided with a containing groove, and the wall of the containing groove is provided with a sliding groove 26 which is matched with the sliding rod 25; one end of the sliding rod 25, which is opposite to the sliding groove 26, is fixed with the output end 22; one end of the elastic member 24 is fixed to the wall of the accommodating groove, and the other end is fixed to the side end of the output end 22; the upper end of the grinding cylinder 1 is provided with a feed inlet, and the lower end of the grinding cylinder 1 is provided with a discharge outlet.

The grains can enter from the feeding hole, and when the rotation driving motor 11 works, the grains can drive the output end 22 to rotate. Since the grinding disc 21 and the output end 22 are eccentrically connected, when the grinding disc 21 moves to the proximal and distal ends, the grinding disc 21 and the inner side wall of the grinding cylinder 1 abut against each other, thereby grinding the grain sample trapped in the middle.

Meanwhile, since the grinding disc 21 and the output end 22 are connected through the elastic piece 24, when the output end 22 rotates, the grinding disc 21 is driven to rotate due to the action of the sliding rod 25, but the grinding disc 21 can impact the grain sample at the near center end and the far center end by a small extent due to the sliding of the sliding rod 25 in the sliding groove 26, so that the grain sample is broken in the process of impact grinding for many times until the grain sample is powder.

In this embodiment, the side end of the grinding drum 1 is provided with a rotating groove for the adapting output end 22 to penetrate into, and a rotating bearing 23 is fixedly arranged in the rotating groove.

As shown in fig. 2, an arc-shaped sliding part 20 is arranged at one end of the grinding material cylinder 1, which is opposite to the rotary driving motor 11, and the cross section of the arc-shaped sliding part 20 is triangular. The arcuate slip portion 20 allows grain to slip down along it and to be concentrated entirely below the grinding disc 21, thereby facilitating grinding of the grain sample.

As shown in fig. 2, the open end of the milling barrel 1 facing away from the rotary driving motor 11 is provided with a sealing cover 12, and the sealing cover 12 is in threaded connection with the open end. The sealing cover 12 is detachable, so that after the testing personnel use, the samples in the grinding barrel 1 are cleaned so as to grind the next grain samples, and the preparation of multiple batches of samples is realized rapidly.

In this embodiment, the lower end of the grinding drum 1 further comprises a fixing support, the fixing support comprises an arc-shaped supporting rod 15, an upper fixing rod 16, a lower fixing sleeve rod 18, a locking screw 17 and a fixing foot 19, one end of the upper fixing rod 16 is fixed with the arc-shaped supporting rod 15, the other end of the upper fixing rod is in sliding connection with the lower fixing sleeve rod 18, correspondingly, a sliding groove matched with the upper fixing rod 16 is formed in the upper end of the lower fixing sleeve rod 18, a threaded hole is formed in the lower fixing sleeve rod 18, the locking screw 17 is in threaded hole, and the fixing foot 19 is fixed with one end of the lower fixing sleeve rod 18, which faces away from the upper fixing rod 16. Through the sleeve joint cooperation of the upper fixing rod 16 and the lower fixing sleeve rod 18, the height of the device can be adjusted conveniently by a user, and the device is beneficial to the adjustment of experimental staff according to the working environment.

In this embodiment, the discharge opening is provided with a blanking tube 13 and the feed opening is provided with a feed hopper 14.

In the present embodiment, the elastic member 24 is a spring.

Although embodiments of the present utility model have been shown and described in detail with reference to the foregoing detailed description, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A grain sample grinding device, which is characterized by comprising a hollow grinding cylinder (1), a grinding disc (21), a rotary driving motor (11), an elastic piece (24) and a sliding rod (25);

an output end (22) of the rotary driving motor (11) and the grinding disc (21) are eccentrically fixed;

one end of the grinding disc (21) back to the output end (22) is provided with an accommodating groove, and the groove wall of the accommodating groove is provided with a sliding groove (26) matched with the sliding rod (25);

one end of the sliding rod (25) facing away from the sliding groove (26) is fixed with the output end (22);

one end of the elastic piece (24) is fixed with the groove wall of the accommodating groove, and the other end of the elastic piece is fixed with the side end of the output end (22);

the upper end of the milling material cylinder (1) is provided with a feed inlet, and the lower end of the milling material cylinder (1) is provided with a discharge outlet.

2. A cereal sample milling device according to claim 1, characterized in that the side end of the milling barrel (1) is provided with a rotating groove into which the adapting output end (22) penetrates, and a rotating bearing (23) is fixedly arranged in the rotating groove.

3. A cereal sample milling device according to claim 1, wherein the end of the milling barrel (1) facing away from the rotary drive motor (11) is provided with an arc-shaped slip part (20), the cross section of the arc-shaped slip part (20) being triangular.

4. A cereal sample milling device according to claim 1, wherein the milling barrel (1) is provided with a sealing cover (12) at the open end facing away from the rotary drive motor (11), said sealing cover (12) being in threaded connection with the open end.

5. The grain sample grinding device according to claim 1, wherein the lower end of the grinding barrel (1) further comprises a fixing support, the fixing support comprises an arc-shaped supporting rod (15), an upper fixing rod (16), a lower fixing sleeve rod (18), a locking screw (17) and a fixing foot (19), one end of the upper fixing rod (16) is fixed with the arc-shaped supporting rod (15), the other end of the upper fixing rod is in sliding connection with the lower fixing sleeve rod (18), correspondingly, a sliding groove matched with the upper fixing rod (16) is formed in the upper end of the lower fixing sleeve rod (18), a threaded hole is formed in the lower fixing sleeve rod (18), the locking screw (17) is in threaded connection with the threaded hole, and the fixing foot (19) is fixed with one end of the lower fixing sleeve rod (18) back to the upper fixing rod (16).

6. A cereal sample milling device according to claim 1, wherein the discharge opening is provided with a blanking tube (13) and the feed opening is provided with a feed hopper (14).

7. A cereal sample milling device according to claim 1, wherein the resilient member (24) is a spring.