Extraction device for detecting veterinary drug residues in fresh milk

Abstract

The utility model discloses an extraction device for detecting the residue of a veterinary drug in fresh milk, relates to the technical field of veterinary drug residue extraction, and solves the problems that when a tube body is put into an open groove of a supporting seat, the tube body needs to be assisted by other people, and the tube body is inconvenient to insert into the supporting seat under the condition of insufficient hands. A clamping structure used for positioning and clamping a pipe body is installed on the supporting plate, the clamping structure comprises two arc-shaped clamping plates which are symmetrically distributed, sliding blocks are fixedly connected to the lower ends of the arc-shaped clamping plates, rubber pads are fixedly bonded to the inner walls of the arc-shaped clamping plates, and first springs are installed on the sides, away from each other, of the two sliding blocks; by installing the driving structure, when the pipe body is installed on the supporting plate, assistance of other people is not needed, single-person operation is also convenient, by installing the speed reduction assembly, the moving speed of the push rod can be effectively reduced, and the situation that the pipe body is impacted and damaged due to the fact that the two arc-shaped clamping plates move too fast can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of veterinary drug residue extraction, in particular to an extraction device for detecting veterinary drug residues in fresh milk. Background Art

[0002] Veterinary drug residues refer to the residues of the original drug or its metabolites, including veterinary drug-related impurities, that accumulate or remain in the bodies of livestock and poultry or products (such as eggs, milk products, meat products, etc.) after drug use. Due to the wide variety of veterinary drug residues, low residual levels in samples, complex matrices, and many interfering substances, sample pretreatment technology, namely separation and purification technology, has become the focus and difficulty of veterinary drug residue analysis. At present, the main sample extraction methods for veterinary drug residues in raw milk include liquid-liquid extraction, solid phase extraction, solid phase microextraction, etc.

[0003] The existing public patent CN210251320U discloses a solid phase extraction column for veterinary drug residue determination. When in use, the water tank is clamped and placed in the inner groove on the upper surface of the base, and the pin body is moved to both sides respectively, driving the clamping block and the lower clamping ring to move to both sides, driving the spring to compress and move to both sides, and the tube body is sleeved inside the slot of the support seat, releasing the force on the pin body, and the spring exerts a force on the pin body, so that the clamping block clamps the support plate, and the lower clamping ring clamps the tube body. The design of the spring makes the lower clamping ring clamp the tube body to prevent shaking when pouring the liquid, and the liquid leaks sideways, and the push-pull rod is moved upward to drive the piston to move out of the tube body.

[0004] When using the above device, when moving the pin bodies to both sides respectively, the user needs to use both hands to move the two pin bodies respectively, so when placing the tube body into the groove of the support seat, the assistance of others is required. When there is a shortage of manpower, it is inconvenient to insert the tube body into the support seat. Utility Model Content

[0005] The purpose of the utility model is to provide an extraction device for detecting veterinary drug residues in raw milk which is convenient for single-person operation and can solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extraction device for detecting veterinary drug residues in raw milk, comprising a support plate, on which a clamping structure for positioning and clamping a tube body is installed, the clamping structure comprising two symmetrically distributed arc-shaped clamping plates, the lower ends of the arc-shaped clamping plates are fixedly connected to sliders, the inner walls of the arc-shaped clamping plates are fixedly adhered to a rubber pad, a spring is installed on one side of the two sliders away from each other, a driving structure for driving the two arc-shaped clamping plates to move is installed inside the support plate, and a handle is fixedly installed on the lower end of the support plate.

[0007] Preferably, the driving structure includes a push rod movably embedded in the front end of the support plate, and the connection between the push rod and the support plate is a plug-in connection, an anti-sliding block is fixedly installed at the front end of the push rod, and two symmetrically distributed connecting rods are hingedly installed at the rear end of the push rod.

[0008] Preferably, a connecting shaft is fixedly embedded in the center of the lower end of the slider, the slider is connected to the support plate by a sliding connection, and the connecting shaft is slidingly connected to the support plate through a limiting straight groove, and the connecting rod is movably hinged to the slider through the connecting shaft.

[0009] Preferably, two symmetrically distributed deceleration assemblies are installed on the outer side of the push rod and inside the support plate, and the deceleration assembly includes a rubber roller rollingly connected to the push rod, and the rubber roller is rotationally connected to the support plate through a positioning shaft.

[0010] Preferably, a sleeve is fixedly embedded on the outer side of the positioning shaft near its two ends, a movable push rod is movably embedded at one end of the sleeve located outside the positioning shaft, and a gasket is fixedly connected to one end of the push rod located inside the sleeve, which can prevent the push rod from detaching from the sleeve.

[0011] Preferably, the gasket is movably abutted against a spring 2 on one side away from the push rod, and a plurality of right-angled trapezoidal blocks equidistantly distributed in a circle are installed on the outer side of the positioning shaft at the push rod, and the plurality of right-angled trapezoidal blocks are fixedly connected by a fixing ring, and the right-angled trapezoidal blocks can prevent the push rod from rotating.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model installs a driving structure, and the push rod in the driving structure moves backward to drive the two arc-shaped clamping plates to move away from each other through two connecting rods. The movement of the push rod only requires one-handed operation, and no other person's assistance is required when installing the tube body on the support plate, so single-person operation is also more convenient.

[0014] 2. The utility model installs a deceleration assembly. When the push rod in the driving structure moves forward and back, the rubber roller in the deceleration assembly cannot rotate under the action of the push rod and the right-angle trapezoidal block, so that the rubber roller and the push rod rub against each other, thereby effectively slowing down the movement speed of the push rod and effectively preventing the two arc-shaped splints from moving too fast and colliding with the tube body, causing damage to the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 It is a side cross-sectional schematic diagram of the bottom side of the support plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the clamping structure, the driving structure and the deceleration assembly of the utility model;

[0018] Figure 4 It is a schematic side section diagram of the positioning shaft of the reduction assembly of the utility model.

[0019] In the figure: 1. support plate; 2. clamping structure; 201. arc clamping plate; 202. slider; 203. rubber pad; 204. spring one; 3. driving structure; 301. push rod; 302. connecting rod; 303. connecting shaft; 4. deceleration assembly; 401. rubber roller; 402. positioning shaft; 403. sleeve; 404. push rod; 405. gasket; 406. spring two; 407. right-angle trapezoidal block; 408. fixing ring; 5. handle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figure 1 , Figure 2 The figure shows an extraction device for detecting veterinary drug residues in raw milk, comprising a support plate 1, on which a clamping structure 2 for positioning and clamping a tube body is installed, the clamping structure 2 comprises two symmetrically distributed arc-shaped clamping plates 201, a slider 202 is fixedly connected to the lower end of the arc-shaped clamping plate 201, a rubber pad 203 is fixedly adhered to the inner wall of the arc-shaped clamping plate 201, a spring 204 is installed on the side away from the two sliders 202, and a driving structure 3 for driving the two arc-shaped clamping plates 201 to move is installed inside the support plate 1.

[0023] See also Figure 3 The driving structure 3 includes a push rod 301 movably embedded in the front end of the support plate 1, and the connection between the push rod 301 and the support plate 1 is a plug-in connection. An anti-sliding block is fixedly installed at the front end of the push rod 301, and two symmetrically distributed connecting rods 302 are hingedly installed at the rear end of the push rod 301.

[0024] See also Figure 1A connecting shaft 303 is fixedly embedded at the center of the lower end of the slider 202. The connection between the slider 202 and the support plate 1 is a sliding connection, and the connecting shaft 303 is slidingly connected to the support plate 1 through a limiting straight groove, and the connecting rod 302 is movably hinged to the slider 202 through the connecting shaft 303.

[0025] The working principle is convenient for single-person operation: when installing the tube body on the support plate 1, the user presses the push rod 301 with one hand, and the two arc-shaped clamping plates 201 are driven to move away from each other through the connecting rod 302 during the backward movement of the push rod 301. Then, the tube body is inserted into the slot on the support plate 1 with the other hand. The user releases the hand pressing the push rod 301. At this time, the two arc-shaped clamping plates 201 are driven by the spring 1 204 to move closer to each other, and the tube body is clamped and positioned. By installing the driving structure 3, the user can open the two arc-shaped clamping plates 201 with one hand, so that no assistance from others is required when installing the tube body on the support plate 1, and single-person operation is also simple and convenient.

[0026] Embodiment 2

[0027] See also Figure 3 This embodiment further explains Example 1. The outer side of the push rod 301 is located inside the support plate 1 and two symmetrically distributed reduction assemblies 4 are installed. The reduction assemblies 4 include a rubber roller 401 that is rollingly connected to the push rod 301, and the rubber roller 401 is rotationally connected to the support plate 1 through a positioning shaft 402.

[0028] See also Figure 4 A sleeve 403 is fixedly embedded on the outer side of the positioning shaft 402 near its two ends. A movable push rod 404 is movably embedded at one end of the sleeve 403 located outside the positioning shaft 402. A gasket 405 is fixedly connected to one end of the push rod 404 located inside the sleeve 403. The gasket 405 can prevent the push rod 404 from detaching from the sleeve 403.

[0029] See also Figure 4 A spring 2 406 is movably abutted on the side of the gasket 405 away from the push rod 404, and a plurality of right-angled trapezoidal blocks 407 equidistantly distributed in a circle are installed on the outer side of the positioning shaft 402 at the push rod 404, and the plurality of right-angled trapezoidal blocks 407 are fixedly connected by a fixing ring 408, and the right-angled trapezoidal blocks 407 can prevent the push rod 404 from rotating.

[0030] In this embodiment: when the user presses the push rod 301, the push rod 301 drives the two rubber rollers 401 to rotate during the movement. When the push rod 404 rotates with the rubber roller 401, the push rod 404 contacts the hypotenuse of the right-angled trapezoidal block 407, and the hypotenuse of the right-angled trapezoidal block 407 can drive the push rod 404 to move to the inside of the sleeve 403. When the user releases the push rod 301, the push rod 301 will move forward driven by the spring 1 204, and at this time the push rod 404 will resist the right-angled trapezoidal block 407, causing the rubber roller 401 to be unable to rotate. The push rod 301 will contact and rub with the rubber roller 401 during the process of moving forward and back, which can effectively reduce the moving speed of the push rod 301 and the arc-shaped clamping plate 201, thereby effectively preventing the two arc-shaped clamping plates 201 from moving too fast and colliding with the tube body driven by the spring 1 204, causing damage to the tube body.

[0031] Embodiment 3

[0032] See also Figure 1 This embodiment further illustrates the first embodiment, where a handle 5 is fixedly mounted on the lower end of the support plate 1 .

[0033] In this embodiment, when the user presses the push rod 301 , the user can hook the handle 5 with the index finger, thereby effectively preventing the support plate 1 from tipping over when the push rod 301 is pressed.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extraction device for detecting veterinary drug residues in raw milk, comprising a support plate (1), characterized in that: The support plate (1) is provided with a clamping structure (2) for positioning and clamping the tube body, the clamping structure (2) comprising two symmetrically distributed arc-shaped clamping plates (201), the lower ends of the arc-shaped clamping plates (201) are fixedly connected with sliders (202), the inner walls of the arc-shaped clamping plates (201) are fixedly bonded with rubber pads (203), a spring (204) is installed on the side away from the two sliders (202), a driving structure (3) for driving the two arc-shaped clamping plates (201) to move is installed inside the support plate (1), and a handle (5) is fixedly installed at the lower end of the support plate (1).

2. The extraction device for detecting veterinary drug residues in fresh milk according to claim 1, characterized in that: The driving structure (3) comprises a push rod (301) movably embedded in the front end of the support plate (1), and the connection between the push rod (301) and the support plate (1) is a plug-in connection, and the rear end of the push rod (301) is hingedly mounted with two symmetrically distributed connecting rods (302).

3. The extraction device for detecting veterinary drug residues in fresh milk according to claim 2, characterized in that: A connecting shaft (303) is fixedly embedded at the center of the lower end of the slider (202), and the connecting shaft (303) is slidably connected to the support plate (1) through a limiting straight groove, and the connecting rod (302) is movably hinged to the slider (202) through the connecting shaft (303).

4. The extraction device for detecting veterinary drug residues in fresh milk according to claim 2, characterized in that: Two symmetrically distributed deceleration assemblies (4) are installed on the outer side of the push rod (301) and located inside the support plate (1). The deceleration assembly (4) includes a rubber roller (401) that is rollingly connected to the push rod (301), and the rubber roller (401) is rotationally connected to the support plate (1) via a positioning shaft (402).

5. The extraction device for detecting veterinary drug residues in fresh milk according to claim 4, characterized in that: A sleeve (403) is fixedly embedded on the outer side of the positioning shaft (402) near its two ends; a movable push rod (404) is movably embedded at one end of the sleeve (403) located outside the positioning shaft (402); and a gasket (405) is fixedly connected to one end of the push rod (404) located inside the sleeve (403).

6. The extraction device for detecting veterinary drug residues in fresh milk according to claim 5, characterized in that: A spring 2 (406) is movably abutted against a side of the gasket (405) away from the push rod (404), and a plurality of right-angled trapezoidal blocks (407) equidistantly distributed in a circumference are installed on the outer side of the positioning shaft (402) at the push rod (404), and the plurality of right-angled trapezoidal blocks (407) are fixedly connected by a fixing ring (408).

Images