A sample pretreatment apparatus

Abstract

The utility model discloses a kind of sample pretreatment equipment, it is related to food detection technical field, including sample processing frame, the bottom four corners of sample processing frame are provided with supporting leg, the horizontal portion of sample processing frame is provided with positioning assembly, the vertical portion of sample processing frame is sequentially provided with first distance adjusting assembly and second distance adjusting assembly from bottom to top, first distance adjusting assembly is installed with first cutter, second distance adjusting assembly is installed with mounting seat, mounting seat is installed with telescopic cylinder, the telescopic end of telescopic cylinder is installed with tool rest, tool rest is provided with second cutter. The utility model can make first cutter transverse with food to be mesh-like cutting appropriate depth by first distance adjusting assembly, then second cutter is adjusted to appropriate position by second distance adjusting assembly, second cutter is driven by telescopic cylinder and food is shredded vertically, by twice cutting, relatively uniform shape of broken piece sample can be quickly obtained, and the efficiency of food detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, and more specifically, to a sample pretreatment device. Background Technology

[0002] Pesticide residues in food refer to trace amounts of pesticides, metabolites, degradation products, or impurities that remain in food after pesticides are applied during agricultural production to control pests, diseases, and weeds. Fruits and vegetables (such as apples, pears, and peaches) are directly exposed to the field, so pesticides tend to adhere to or penetrate the skin and near-skin tissues, with relatively low residue levels in the flesh. When sampling, it is necessary to cover both high-risk areas and the edible parts to avoid poor detection accuracy due to sampling only low-risk internal areas.

[0003] However, the existing sampling pretreatment method involves staff using knives to chop the sample surface. This method requires multiple cuts, which is cumbersome and inconvenient, and cannot quickly obtain fragmented samples, resulting in low detection efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a sample pretreatment device to solve the problem that the existing sampling pretreatment method involves the operator using a knife to cut the sample surface into pieces. This operation requires multiple cuts, which is cumbersome and inconvenient, and cannot quickly obtain fragmented samples, resulting in low detection efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sample pretreatment device, including a sample processing rack, with support legs provided at the four corners of the bottom of the sample processing rack, a positioning component provided on the horizontal part of the sample processing rack, and a first adjusting component and a second adjusting component arranged sequentially from bottom to top on the vertical part of the sample processing rack, a first cutting tool mounted on the first adjusting component, a mounting base mounted on the second adjusting component, a telescopic cylinder mounted on the mounting base, a tool holder mounted on the telescopic end of the telescopic cylinder, and a second cutting tool mounted on the tool holder.

[0006] Preferably, the first tool is arranged in a grid-like structure, the second tool is arranged in a vertical blade-like structure, and there are two of each tool.

[0007] Preferably, both the first and second cutting tools are symmetrically arranged with the positioning component as the center.

[0008] Preferably, the positioning component includes a support rod, and the top of the support rod has a plurality of positioning posts arranged in a ring.

[0009] Preferably, the first adjustment component includes a first slide groove formed on the vertical part of the sample processing rack, a first counter-rotating lead screw rotatably installed in the first slide groove, and symmetrical first sliders slidably fitted in the first slide groove. The two first sliders are respectively threaded on the left and right sides of the first counter-rotating lead screw. A first rocker arm is fixedly installed at one end of the first counter-rotating lead screw, and a knife holder is fixedly connected to the first slider. The first knife is installed on the knife holder.

[0010] Preferably, the second adjustment component includes a second slide groove formed on the vertical part of the sample processing rack, a second counter-rotating lead screw rotatably installed in the second slide groove, and symmetrical second sliders slidably fitted in the second slide groove. The two second sliders are respectively threaded on the left and right sides of the second counter-rotating lead screw, a second rocker arm is fixedly installed at one end of the second counter-rotating lead screw, and the mounting base is fixedly installed on the second slider.

[0011] Preferably, the support rod is rotatably mounted on the horizontal part of the sample processing rack, and an angle adjustment component is also provided in the horizontal part of the sample processing rack. The angle adjustment component includes a worm gear, which is fixed to the bottom end of the support rod. A worm is also rotatably mounted in the sample processing rack, and the worm gear meshes with the worm. A handle is fixedly mounted on the outer end of the worm.

[0012] Preferably, the vertical part of the sample processing rack is fixedly connected to a feeding slide by a fixing rod, and the support rod is movably inserted into the middle of the feeding slide.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention enables the first blade to make a horizontal mesh-like cut to an appropriate depth using a first adjusting component, and then adjusts the second blade to a suitable position using a second adjusting component. The second blade is then driven by a telescopic cylinder to vertically cut the food into small pieces. Through two cuts, relatively uniformly shaped fragments can be quickly obtained, improving the efficiency of food testing.

[0014] This invention improves the overall practicality of the equipment by setting up a first adjusting component and a second adjusting component to adjust the position of the first and second blades according to the size of the food.

[0015] This invention allows the worm gear to mesh with the worm wheel and rotate by rotating the knob, thereby adjusting the angle of the food and repeating the cutting operation. This allows for repeated cutting of the food for sampling, enabling multiple samples to be obtained for multiple tests, thus further improving sampling efficiency.

[0016] This invention, through the setting of a feeding chute, allows the sample container to be placed at the dropping end of the feeding chute, so that fragmented samples can automatically slide into the sample container. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the main structure of this utility model; Figure 2 This is a front view of the main structure of this utility model; Figure 3 This is a schematic diagram of the relevant structure of the positioning component of this utility model; Figure 4 This is a schematic diagram of the relevant structure of the first adjustment component of this utility model; Figure 5 This is a schematic diagram of the relevant structure of the second adjustment component of this utility model; Figure 6 This is a schematic diagram of the relevant structure of the angle adjustment component of this utility model.

[0018] Figure label: 1. Sample processing rack; 2. Support leg; 3. Positioning assembly; 31. Support rod; 32. Positioning post; 4. First adjustment assembly; 41. First slide groove; 42. First counter-directional lead screw; 43. First slider; 44. First crank handle; 45. Tool holder; 5. First tool; 6. Second adjustment assembly; 61. Second slide groove; 62. Second counter-directional lead screw; 63. Second slider; 64. Second crank handle; 7. Mounting base; 8. Telescopic cylinder; 9. Tool holder; 10. Second tool; 11. Angle adjustment assembly; 111. Worm gear; 112. Worm; 113. Button handle; 12. Fixing rod; 13. Feeding slide. Detailed Implementation

[0019] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0020] As attached Figure 1 To be continued Figure 6 An embodiment of this utility model provides a sample pretreatment device, including a sample processing rack 1. Support legs 2 are provided at the four corners of the bottom of the sample processing rack 1. A positioning component 3 is provided on the horizontal part of the sample processing rack 1. A first adjusting component 4 and a second adjusting component 6 are sequentially arranged from bottom to top on the vertical part of the sample processing rack 1. A first blade 5 is mounted on the first adjusting component 4. A mounting base 7 is mounted on the second adjusting component 6. A telescopic cylinder 8 is mounted on the mounting base 7. The telescopic cylinder 8 is an existing pneumatic structure, and its activation method can be achieved by an existing control structure, which will not be elaborated further here. A blade holder 9 is mounted on the telescopic end of the telescopic cylinder 8. A second blade 10 is provided on the blade holder 9. The first blade 5 is arranged in a grid-like structure, and the second blade 10 is arranged in a vertical sheet-like structure. There are two of each type of blade, and both the first blade 5 and the second blade 10 are symmetrically arranged with the positioning component 3 as the center.

[0021] The first adjustment component 4 enables the first cutter 5 to cut the food horizontally in a mesh pattern to an appropriate depth. The second adjustment component 6 then adjusts the second cutter 10 to a suitable position, and the telescopic cylinder 8 drives the second cutter 10 to vertically cut the food. Through two cuts, a relatively uniform shaped fragment sample can be quickly obtained.

[0022] Preferably, the positioning component 3 includes a support rod 31, and the top of the support rod 31 has a plurality of positioning posts 32 arranged in a ring. Food is inserted into the support rod 31 through the positioning posts 32 to fix it so that the first cutter 5 and the second cutter 10 can cut the food.

[0023] Preferably, the first adjustment component 4 includes a first groove 41 formed on the vertical part of the sample processing rack 1, a first counter-rotating lead screw 42 rotatably installed in the first groove 41, and symmetrical first sliders 43 slidably fitted in the first groove 41. The two first sliders 43 are respectively threaded on the left and right sides of the first counter-rotating lead screw 42. A first rocker arm 44 is fixedly installed at one end of the first counter-rotating lead screw 42. A knife holder 45 is fixedly connected to the first slider 43, and a first cutting tool 5 is installed on the knife holder 45.

[0024] Preferably, the second adjustment assembly 6 includes a second slide groove 61 formed on the vertical part of the sample processing rack 1, a second counter-rotating lead screw 62 is rotatably installed in the second slide groove 61, and symmetrical second sliders 63 are also slidably fitted in the second slide groove 61. The two second sliders 63 are respectively threaded on the left and right sides of the second counter-rotating lead screw 62. A second rocker handle 64 is fixedly installed at one end of the second counter-rotating lead screw 62, and the mounting base 7 is fixedly installed on the second slider 63.

[0025] The rotation of the first eccentric lead screw 42 causes the first slider 43 to move close to or away from each other along the first slide groove 41, thereby enabling the first cutter 5 to cut the food laterally. Similarly, the rotation of the second eccentric lead screw 62 can adjust the distance between the two second cutters 10 to match the cutting depth of the first cutter 5, and then the second cutter 10 cuts vertically to chop and sample the food, and the distance can be adjusted according to the size of the food.

[0026] When in use, first fix the food on the positioning post 32, then rotate the first rocker 44 in the forward direction to make the first blade 5 cut into the food horizontally, then rotate it in the reverse direction to remove the first blade 5, then rotate the second rocker 64 to adjust the second blade 10 to a suitable position, and start the telescopic cylinder 8 to cut the food vertically, thus completing the food chopping and sampling process.

[0027] Further embodiments, such as Figure 6As shown, the support rod 31 is rotatably mounted on the horizontal part of the sample processing rack 1. An angle adjustment assembly 11 is also provided in the horizontal part of the sample processing rack 1. The angle adjustment assembly 11 includes a worm gear 111, which is fixed to the bottom end of the support rod 31. A worm 112 is also rotatably mounted in the sample processing rack 1. The worm gear 111 meshes with the worm 112. A handle 113 is fixedly mounted on the outer end of the worm 112.

[0028] Specifically, after a cut is completed, the worm gear 112 can be engaged with the worm wheel 111 by rotating the knob 113, thereby adjusting the angle of the food and repeating the cutting operation to cut the food again for sampling, so as to obtain multiple samples for multiple tests.

[0029] Preferably, the vertical part of the sample processing rack 1 is fixedly connected to the discharge slide 13 by the fixing rod 12, and the support rod 31 is movably inserted into the middle of the discharge slide 13. By setting the discharge slide 13, the sample container is placed at the discharge end of the discharge slide 13, so that the fragmented sample can automatically slide into the sample container.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sample pre-treatment device, characterized by, The sample processing rack (1) is provided with four support legs (2) at the bottom corners. A positioning component (3) is provided on the horizontal part of the sample processing rack (1). A first adjustment component (4) and a second adjustment component (6) are provided on the vertical part of the sample processing rack (1) from bottom to top. A first cutter (5) is installed on the first adjustment component (4). A mounting base (7) is installed on the second adjustment component (6). A telescopic cylinder (8) is installed on the mounting base (7). A knife holder (9) is installed on the telescopic end of the telescopic cylinder (8). A second cutter (10) is provided on the knife holder (9).

2. The sample preparation device of claim 1, wherein, The first cutting tool (5) is arranged in a grid-like structure, and the second cutting tool (10) is arranged in a vertical sheet-like structure. There are two of each of the first cutting tool (5) and the second cutting tool (10).

3. The sample preparation device of claim 2, wherein, The first cutting tool (5) and the second cutting tool (10) are both symmetrically arranged with the positioning component (3) as the center.

4. The sample preparation device of claim 1, wherein, The positioning component (3) includes a support rod (31), and the top of the support rod (31) has a ring array of several positioning posts (32).

5. The sample preparation device of claim 1, wherein, The first adjustment component (4) includes a first groove (41) opened on the vertical part of the sample processing rack (1). A first counter-rotating lead screw (42) is rotatably installed in the first groove (41). A symmetrical first slider (43) is also slidably fitted in the first groove (41). The two first sliders (43) are respectively threaded on the left and right sides of the first counter-rotating lead screw (42). A first rocker arm (44) is fixedly installed at one end of the first counter-rotating lead screw (42). A knife holder (45) is fixedly connected to the first slider (43). The first knife (5) is installed on the knife holder (45).

6. The sample preparation device of claim 5, wherein, The second adjustment assembly (6) includes a second slide groove (61) opened on the vertical part of the sample processing rack (1), a second counter-rotating lead screw (62) is rotatably installed in the second slide groove (61), and a symmetrical second slider (63) is also slidably fitted in the second slide groove (61). The two second sliders (63) are respectively threaded on the left and right sides of the second counter-rotating lead screw (62). A second rocker arm (64) is fixedly installed at one end of the second counter-rotating lead screw (62), and the mounting base (7) is fixedly installed on the second slider (63).

7. The sample preparation device of claim 4, wherein, The support rod (31) is rotatably mounted on the horizontal part of the sample processing rack (1). An angle adjustment component (11) is also provided in the horizontal part of the sample processing rack (1). The angle adjustment component (11) includes a worm gear (111). The worm gear (111) is fixed to the bottom end of the support rod (31). A worm (112) is also rotatably mounted in the sample processing rack (1). The worm gear (111) meshes with the worm (112). A knob (113) is fixedly mounted on the outer end of the worm (112).

8. The sample preparation device of claim 7, wherein, The vertical part of the sample processing rack (1) is fixedly connected to the feeding slide (13) by a fixing rod (12), and the support rod (31) is movably inserted into the middle of the feeding slide (13).

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