Test tube centrifugal device for tea pesticide residue detection

Abstract

The utility model discloses a test tube centrifugal device for tea pesticide residue detection. The test tube centrifugal device comprises a box body, a cover body, a first motor, a rotating shaft, a horizontal rotor and a plurality of sleeves, a centrifugal cavity is formed in the box body, the rotating shaft is rotationally arranged in the centrifugal cavity, the horizontal rotor is connected with the rotating shaft, the sleeves are rotationally arranged on the horizontal rotor, the rotating direction of the sleeves is perpendicular to the rotating direction of the rotating shaft, and the first motor is in driving connection with the rotating shaft. The cover body is arranged on the box body and is provided with a test tube inlet, and the test tube inlet is communicated with the centrifugal cavity; the two sliding rails are oppositely arranged on the two sides of the test tube inlet, the sliding plate is arranged between the two sliding rails in a sliding mode, the width of the sliding plate is larger than that of the test tube inlet, the second motor can drive the sliding plate to move on the sliding rails, opening and closing of the test tube inlet are achieved, and therefore the cover does not need to be opened; and the manipulator can conveniently place the test tube into a centrifuge for centrifugation through the test tube inlet.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a test tube centrifuge device for detecting pesticide residues in tea leaves. Background Art

[0002] Tea leaves, commonly known as tea, originated in China and generally include the leaves and buds of the camellia plant.

[0003] Tea trees may face attacks from various pests and diseases during the planting process. In order to protect the yield and quality of tea trees and tea leaves, pesticides are usually used for prevention and control. However, the use of pesticides must be strictly controlled to ensure that the pesticide residues in tea are within the permitted range of standards.

[0004] When testing pesticide residues in tea, a centrifuge is often needed to separate the components. However, during the automated preparation of pesticide residue samples, it is difficult to open the cover of the centrifuge, so the robot cannot properly place the test tube into the centrifuge for centrifugation. Utility Model Content

[0005] Based on this, it is necessary to provide a test tube centrifuge device for detecting pesticide residues in tea.

[0006] The utility model solves the above technical problems with the following technical solutions: A test tube centrifuge device for detecting pesticide residues in tea, comprising: a box body, a cover body, a first motor, a rotating shaft, a horizontal rotor and a plurality of sleeves;

[0007] A centrifugal chamber is provided in the box body, the rotating shaft is rotatably arranged in the centrifugal chamber, the horizontal rotor is connected to the rotating shaft, each of the sleeves is rotatably arranged on the horizontal rotor, and the rotating direction of each of the sleeves is perpendicular to the rotating direction of the rotating shaft, and the first motor is drivingly connected to the rotating shaft;

[0008] The cover body is arranged on the box body, and the cover body is provided with a test tube inlet, and the test tube inlet is communicated with the centrifugal chamber;

[0009] A sealing mechanism is provided on the cover body, and the sealing mechanism includes: a slide plate, a second motor and two slide rails, the two slide rails are relatively arranged on both sides of the test tube entrance, the slide plate is slidably arranged between the two slide rails, the width of the slide plate is greater than the width of the test tube entrance, and the second motor is drivingly connected to the slide plate.

[0010] In one embodiment, a plurality of U-shaped frames are disposed on the horizontal rotor, and the U-shaped frames are evenly distributed on the horizontal rotor, and each of the sleeves is rotatably disposed on a U-shaped frame.

[0011] In one embodiment, the U-shaped frame is provided with two rotating holes, the two rotating holes are arranged opposite to each other on the U-shaped frame, and rotating rods are respectively arranged on both sides of the sleeve, and the rotating rods are rotatably arranged on the rotating holes.

[0012] In one embodiment, it also includes: a support rod and two rotating seats, one of the rotating seats is set on the box body, and the other rotating seat is set on the cover body, one end of the support rod is rotatably connected to one of the rotating seats, and one end of the support rod is rotatably set on the other rotating seat.

[0013] In one embodiment, the shape of the test tube inlet is circular or square.

[0014] In one embodiment, the shape of the slide plate is round or square.

[0015] In one embodiment, a nitrogen inlet pipe is provided on the box body, and the nitrogen inlet pipe is connected to the centrifugal chamber.

[0016] In one embodiment, an anti-slip layer is provided on the inner side wall of the sleeve.

[0017] The beneficial effects of the utility model are as follows: the utility model provides a test tube centrifuge device for detecting pesticide residues in tea leaves. Since a sealing mechanism is arranged on the cover body, the sealing mechanism comprises: a slide plate, a second motor and two slide rails. A test tube entrance is opened on the cover body, and the two slide rails are relatively arranged on both sides of the test tube entrance. The slide plate is slidably arranged between the two slide rails, and the width of the slide plate is greater than the width of the test tube entrance. In this way, the second motor can drive the slide plate to move on the slide rails to realize the opening and closing of the test tube entrance, so that there is no need to open the cover body, which is convenient for the manipulator to put the test tube into the centrifuge through the test tube entrance for centrifugation during the automated preparation process of pesticide residue samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a test tube centrifuge device for detecting pesticide residues in tea leaves according to an embodiment;

[0019] Figure 2 The figure is a schematic cross-sectional structure diagram of a test tube centrifuge device for detecting pesticide residues in tea leaves according to an embodiment.

[0020] In the attached drawings, 800 is a test tube centrifuge device for detecting pesticide residues in tea leaves; 810 is a casing; 811 is a centrifugal chamber; 820 is a cover; 821 is a test tube inlet; 831 is a rotating shaft; 832 is a horizontal rotor; 833 is a sleeve; 834 is a first motor; 841 is a slide rail; 842 is a slide plate; 851 is a rotating seat; 852 is a support rod; and 853 is a rotating groove. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] like Figure 1 and Figure 2 As shown, in one embodiment, a test tube centrifuge device 800 for detecting pesticide residues in tea leaves comprises: a box body 810, a cover body 820, a first motor 834, a rotating shaft 831, a horizontal rotor 832 and a plurality of sleeves 833; a centrifugal chamber 811 is provided in the box body 810, the rotating shaft 831 is rotatably arranged in the centrifugal chamber 811, the horizontal rotor 832 is connected to the rotating shaft 831, each sleeve 833 is rotatably arranged on the horizontal rotor 832, and the rotation direction of each sleeve 833 is perpendicular to the rotation direction of the rotating shaft 831, and the first motor 834 is connected to the rotating shaft 831. The rotating shaft 831 is drive connected; the cover body 820 is arranged on the box body 810, and the cover body 820 is provided with a test tube inlet 821, and the test tube inlet 821 is communicated with the centrifugal chamber 811; the cover body 820 is provided with a sealing mechanism, and the sealing mechanism includes: a slide plate 842, a second motor and two slide rails 841, the two slide rails 841 are relatively arranged on both sides of the test tube inlet 821, the slide plate 842 is slidably arranged between the two slide rails 841, the width of the slide plate 842 is greater than the width of the test tube inlet 821, and the second motor is drive connected to the slide plate 842.

[0024] In this embodiment, the centrifugal chamber 811 is a cylindrical cavity, and the shape of the horizontal rotor 832 is correspondingly cylindrical. The rotating shaft 831 is rotatably arranged in the centrifugal chamber 811, driving the horizontal rotor 832 to rotate in the horizontal direction. The sleeves 833 are distributed on the circumferential outer side of the horizontal rotor 832, and the sleeves 833 are rotatably arranged on the horizontal rotor 832 in the vertical direction, that is, the rotation direction of each sleeve 833 is perpendicular to the rotation direction of the horizontal rotor 832.

[0025] Specifically, the edge of the horizontal rotor 832 is provided with a plurality of U-shaped grooves, and each U-shaped groove is arranged around the rotation axis of the horizontal rotor 832, each sleeve 833 is rotatably connected to the side wall of a U-shaped groove, and each sleeve 833 is rotatably arranged in a U-shaped groove. In one embodiment, a support shaft is connected to each side of each sleeve 833, and the two support shafts are rotatably connected to the side walls of the two sides of the U-shaped groove. In this embodiment, two opposite side walls of the U-shaped groove are respectively provided with rotation holes, and each support shaft is rotatably arranged in a rotation hole, so that the support for the rotation of the sleeve 833 is achieved by the rotation of the support shaft in the rotation hole. In one embodiment, two opposite side walls of the U-shaped groove are respectively provided with a support shaft, and support holes are respectively provided on both sides of each sleeve 833, and each of the support shafts is inserted in a support hole, so that each sleeve 833 can rotate around the support shaft. In this embodiment, the axial direction of the support shaft is perpendicular to the axial direction of the rotation shaft.

[0026] In this embodiment, the sleeve 833 is used to place a test tube, which is a test tube containing a sample of pesticide residue components. The distance between the top of the sleeve 833 and the support shaft is smaller than the distance between the bottom of the sleeve 833 and the support shaft, so that when the test tube is placed in the sleeve 833, the distance between the opening of the test tube and the support shaft is smaller than the distance between the bottom of the test tube and the support shaft. In this way, since the center of the test tube is located below the support shaft, when the horizontal rotor 832 rotates in the horizontal direction, the bottom of the test tube overcomes gravity under the action of centrifugation and rotates upward, so that the bottom of each test tube rotates outward and upward. In this way, when the first motor 834 drives the rotating shaft 831 to rotate, the horizontal rotor 832 rotates in the horizontal direction, and at the same time, each sleeve 833 can rotate relative to the horizontal rotor 832, so that during the centrifugation process, the test tube placed in the sleeve 833 can rotate back and forth relative to the horizontal rotor 832 during the rotation of the horizontal rotor 832 until it is on the same plane as the horizontal rotor 832, thus increasing the distance between the pesticide residue sample and the center of the circle of the horizontal rotor 832, that is, increasing the radius during centrifugation, so that it is subjected to a larger centrifugal force, which can accelerate the sedimentation speed of the particles in the pesticide residue sample, and separate the substances with different sedimentation coefficients and buoyancy densities in the pesticide residue sample. It should be understood that the way in which the first motor 834 drives the rotating shaft 831 to rotate is a technology that can be known to those skilled in the art and can be implemented, and will not be described in detail in this embodiment.

[0027] In this embodiment, the test tube inlet 821 on the cover body 820 is connected to the centrifugal chamber 811, the test tube inlet 821 is staggered from the rotation axis of the horizontal rotor 832, and each sleeve 833 is respectively aligned with the test tube inlet 821, that is, the test tube inlet 821 can be aligned with each sleeve 833 one by one, so that the manipulator can place the test tube on the sleeve 833 through the test tube inlet 821, and the side wall of the test tube inlet 821 is provided with a accommodating cavity, which is connected to the test tube inlet 821, and the accommodating cavity is connected to the centrifugal chamber 811, the width of the accommodating cavity is greater than the width of the test tube inlet 821, and the two slide rails 841 are arranged relatively On a relative inner wall of the accommodating chamber, the length of the slide rail 841 is greater than the width of the test tube entrance 821. The slide rail 842 is driven by the second motor to move toward or away from the test tube entrance 821 on the slide rail 841, and the test tube entrance 821 can be opened or closed, so there is no need to open the cover 820, which is convenient for the manipulator to put the test tube into the centrifuge through the test tube entrance 821 for centrifugation during the automated preparation of pesticide residue samples. It should be understood that the second motor drives the slide rail 842 to move in a manner that is known to those skilled in the art and is achievable, and is not described in detail in this embodiment. For example, the power output shaft of the second motor is connected to a gear, and the slide rail 842 is connected to a rack, and the gear and the rack are meshed, so that the second motor can drive the slide rail to move in a straight line. For another example, the second motor is connected to a screw, and the screw is connected to the screw nut on the slide rail.

[0028] In order to enable the sleeve 833 to be rotatably arranged on the horizontal rotor 832, in one embodiment, a plurality of U-shaped frames are arranged on the horizontal rotor 832, each of the U-shaped frames is evenly distributed on the horizontal rotor 832, each of the U-shaped frames is provided with a U-shaped groove, and each of the sleeves 833 is rotatably arranged on a U-shaped frame. Specifically, each of the U-shaped frames is evenly arranged on the outer circumferential wall of the horizontal rotor 832, that is, each of the U-shaped frames is arranged along the radial direction of the horizontal rotor 832, and one end of the opening of the U-shaped frame is away from the center of the horizontal rotor 832. Further, two rotating holes are respectively provided on the two side walls of the U-shaped frame, that is, the two rotating holes are relatively arranged on the two side walls of the U-shaped frame, and rotating rods are respectively arranged on both sides of the sleeve 833, and the width of the rotating hole is greater than the width of the rotating rod. In this way, the sleeve can be rotatably arranged on the U-shaped frame by connecting the first end of the rotating rod with the sleeve 833, and the second end of the rotating rod passes through the rotating hole, and the second end of the rotating rod is provided with an external thread and connected with a nut.

[0029] In order to better connect the cover 820 to the box 810, in one embodiment, Figure 1As shown, the test tube centrifuge device 800 for detecting pesticide residues in tea leaves also includes: a support rod 852 and two rotating seats 851, one of the rotating seats 851 is arranged on the box body 810, and the other rotating seat 851 is arranged on the cover body 820, one end of the support rod 852 is rotatably connected to one of the rotating seats 851, and one end of the support rod 852 is rotatably arranged on the other rotating seat 851. Specifically, the cover body 820 is rotatably arranged on the box body 810, that is, one side of the cover body 820 is rotatably connected to the box body 810, and a rotating groove 853 is provided on the side of the box body 810 that is rotatably connected to the cover body 820, and the depth of the rotating groove 853 is adapted to the height of the box body 810, so that one rotating seat 851 can be arranged on the bottom of the box body 810, and the other rotating seat 851 is arranged on the side of the cover body 820 facing the box body 810, and the positions of the two rotating seats 851 correspond to each other. The two ends of the support rod 852 are rotatably connected to a rotating seat 851 respectively. The support rod 852 is a telescopic rod, and the rotating groove 853 has a certain length. In this way, the support rod 852 can be displaced when the cover body 820 is closed on the box body 810 or the support rod 852 is opened. The support rod 852 contracts when the cover body 820 is closed on the box body 810, and the support rod 852 stretches when the cover body 820 is opened, which can limit the opening degree of the cover body 820 on the box body 810.

[0030] Furthermore, in order to enable the cover body 820 to be better connected to the box body 810, a locking piece is provided on the cover body 820, a locking hole is provided on the locking piece, and a locking groove is provided on the box body 810. The positions of the locking piece and the locking groove correspond one to one. By arranging a third motor and a locking rod in the locking groove, when the cover body 820 is closed on the box body 810, the locking piece is inserted into the locking groove, and the third motor drives the locking rod to pass through the locking hole to limit the locking piece, so that the cover body 820 can be better covered on the box body 810. It should be understood that the way in which the third motor drives the locking rod to move is a technology that can be known to those skilled in the art and is feasible, and is not described in detail in this embodiment.

[0031] In one embodiment, the shape of the test tube inlet 821 is circular or square. Specifically, the shape of the test tube inlet 821 can be adjusted according to the shape of the manipulator, and the shape of the slide plate 842 is circular or square accordingly. For example, the shape of the test tube inlet 821 is circular, which can facilitate the manipulator to clamp the test tube through the test tube inlet 821 and place it on the sleeve, and the shape of the slide plate 842 can be circular, or the shape of the slide plate 842 can be square, and the test tube inlet 821 is closed.

[0032] In order to improve the safety of the test tube centrifuge device 800 for detecting pesticide residues in tea leaves, in one embodiment, a nitrogen inlet pipe is provided on the box body 810, and the nitrogen inlet pipe is connected to the centrifugal chamber 811. Specifically, nitrogen is filled into the centrifugal chamber 811 through the nitrogen inlet pipe to replace the air inside, so that the oxygen concentration is maintained within a safe range, which can improve the safety of the test tube centrifuge device 800 for detecting pesticide residues in tea leaves during operation.

[0033] In order to better define the position of the test tube in the sleeve 833, in one embodiment, an anti-skid layer is provided on the inner wall of the sleeve 833. Specifically, the anti-skid layer is provided on the circumferential inner wall of the sleeve, which can increase the friction between the sleeve and the test tube, so that the test tube can be better placed in the sleeve to avoid displacement during centrifugation.

[0034] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A test tube centrifuge device for detecting pesticide residues in tea, characterized in that: include: A box body, a cover body, a first motor, a rotating shaft, a horizontal rotor and a plurality of sleeves; A centrifugal chamber is provided in the box body, the rotating shaft is rotatably arranged in the centrifugal chamber, the horizontal rotor is connected to the rotating shaft, each of the sleeves is rotatably arranged on the horizontal rotor, and the rotating direction of each of the sleeves is perpendicular to the rotating direction of the rotating shaft, and the first motor is drivingly connected to the rotating shaft; The cover body is arranged on the box body, and the cover body is provided with a test tube inlet, and the test tube inlet is communicated with the centrifugal chamber; A sealing mechanism is provided on the cover body, and the sealing mechanism includes: a slide plate, a second motor and two slide rails, the two slide rails are relatively arranged on both sides of the test tube entrance, the slide plate is slidably arranged between the two slide rails, the width of the slide plate is greater than the width of the test tube entrance, and the second motor is drivingly connected to the slide plate.

2. A test tube centrifuge device for detecting pesticide residues in tea according to claim 1, characterized in that: A plurality of U-shaped frames are arranged on the horizontal rotor, and the U-shaped frames are evenly distributed on the horizontal rotor, and each of the sleeves is rotatably arranged on a U-shaped frame.

3. A test tube centrifuge device for detecting pesticide residues in tea according to claim 2, characterized in that: The U-shaped frame is provided with two rotating holes, which are arranged opposite to each other on the U-shaped frame. Rotating rods are respectively arranged on both sides of the sleeve, and the rotating rods are rotatably arranged on the rotating holes.

4. A test tube centrifuge device for detecting pesticide residues in tea according to claim 1, characterized in that: Also includes: A support rod and two rotating seats, one rotating seat is arranged on the box body, and the other rotating seat is arranged on the cover body. One end of the support rod is rotatably connected to one rotating seat, and one end of the support rod is rotatably arranged on the other rotating seat.

5. A test tube centrifuge device for detecting pesticide residues in tea according to claim 1, characterized in that: The shape of the test tube inlet is circular or square.

6. A test tube centrifuge device for detecting pesticide residues in tea according to claim 5, characterized in that: The shape of the slide plate is round or square.

7. A test tube centrifuge device for detecting pesticide residues in tea according to claim 1, characterized in that: The box body is provided with a nitrogen inlet pipe, and the nitrogen inlet pipe is communicated with the centrifugal chamber.

8. A test tube centrifuge device for detecting pesticide residues in tea according to claim 1, characterized in that: An anti-slip layer is arranged on the inner side wall of the sleeve.

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