Manual solid-phase extraction device

Abstract

The utility model discloses a manual solid-phase extraction device, which relates to the technical field of extraction devices and comprises a chassis, a plurality of extraction mechanisms are arranged above the chassis, and two draw bars are fixed above the chassis; the bearing assembly is arranged above the chassis, the bearing assembly is used for bearing extraction mechanisms of various sizes, the bearing assembly comprises a first bearing pore plate, a second bearing pore plate is rotationally arranged below the first bearing pore plate, and a third bearing pore plate is rotationally arranged below the second bearing pore plate. The position of the third bearing pore plate or the second bearing pore plate is adjusted and fixed by rotating the third bearing pore plate or the second bearing pore plate and utilizing the positioning head in the third bearing pore plate or the second bearing pore plate and automatic limiting of the spring; the bearing holes of the third bearing hole plate or the second bearing hole plate are hidden or stacked with the first bearing hole plate, so that the device can be used for extraction mechanism vessels with various sizes, and the overall applicability of the device is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to extraction device technical field, concretely relates to a kind of manual solid-phase extraction device. BACKGROUND

[0002] Solid-phase extraction is a kind of technology widely used in separation and enrichment of target substance in analytical sample, it is usually used in the treatment of liquid sample, especially in the field of environmental analysis, food safety, drug detection and clinical analysis, it is a kind of efficient, flexible sample pretreatment technology, plays an important role in modern analytical chemistry, and it is crucial to select appropriate solid-phase material and optimize operating conditions to improve the recovery rate of target substance and analysis sensitivity.

[0003] The prior art document with publication number CN205287712U discloses a kind of manual solid-phase extraction device, it includes respectively assembled on a bottom disc screw rod and support rod, in screw rod and support rod are sequentially worn and are installed with the plate body and pressing plate of the diameter of bottom disc, the plate body is distributed with hole, support rod is provided with support seat, support rod is fixedly connected with bottom disc, plate body is movably connected between screw rod and support rod, pressing plate is screwed with screw rod, pressing plate is movably connected between screw rod and support rod, screw rod top end is assembled with crank handle.

[0004] The above-mentioned manual solid-phase extraction device, since the hole size of the extraction mechanism is fixed, can only be used with the extraction mechanism of fixed size, and cannot be used with extraction mechanism vessels of different sizes, resulting in poor overall applicability of the device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of manual solid-phase extraction device, solve the existing manual solid-phase extraction device, since the hole size of the extraction mechanism is fixed, can only be used with the extraction mechanism of fixed size, and cannot be used with extraction mechanism vessels of different sizes, resulting in poor overall applicability of the device.

[0006] The utility model solves the above technical problem by the following technical solutions, the utility model discloses a kind of manual solid-phase extraction device, it includes:

[0007] Bottom disc, the top of the bottom disc is provided with a plurality of extraction mechanisms, and the top of the bottom disc is fixed with two traction rods;

[0008] A bearing assembly is arranged above the chassis, and the bearing assembly is used for bearing the extraction mechanisms of various sizes, and the bearing assembly comprises a first bearing hole plate, a second bearing hole plate is rotatably arranged below the first bearing hole plate, and a third bearing hole plate is rotatably arranged below the second bearing hole plate, the first bearing hole plate, the second bearing hole plate and the third bearing hole plate are arranged outside the two traction rods, two inner grooves are formed in the interiors of the second bearing hole plate and the third bearing hole plate, four positioning heads are slidably arranged in the interiors of the four inner grooves, four springs are fixedly arranged in the interiors of the four inner grooves, and one end of each of the four springs is fixedly connected to one side of each of the four positioning heads.

[0009] Preferably, a contraction assembly is arranged above the chassis, and the contraction assembly is used for changing the distance between the bearing assembly and the chassis.

[0010] Preferably, the contraction assembly comprises a fixed cylinder fixed to the interior of the first bearing hole plate, two vertical grooves are formed in the outer surface of the fixed cylinder, a first supporting column and a second supporting column are slidably arranged in the interior of the fixed cylinder, one end of the first supporting column is fixed to the interior of the chassis, two sliding rings are slidably arranged on the exterior of the fixed cylinder, the two sliding rings are fixed to the exteriors of the first supporting column and the second supporting column respectively, positioning screws are threadedly connected to the interiors of the two sliding rings respectively, and a plurality of threaded holes are formed in the outer surface of the fixed cylinder.

[0011] Preferably, a plurality of positioning grooves are formed in the outer surface of the fixed cylinder, and elastic positioning strips are fixed to the inner sides of the two sliding rings.

[0012] Preferably, a lead screw is rotatably arranged at one end of the second supporting column, a pressing plate is threadedly mounted on the exterior of the lead screw, and a driving handle is fixed to one end of the lead screw.

[0013] Preferably, the pressing plate is slidably arranged on the exterior of the two traction rods.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] By rotating the third bearing hole plate or the second bearing hole plate and automatically limiting the positioning heads and the springs in the third bearing hole plate or the second bearing hole plate, the position of the third bearing hole plate or the second bearing hole plate is adjusted and fixed, the bearing holes of the third bearing hole plate or the second bearing hole plate are hidden or stacked with the first bearing hole plate, the extraction mechanism vessels of various sizes can be used, and the overall applicability of the device is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view structure schematic diagram of the utility model;

[0017] Figure 2 It is the split sectional view of the utility model in bearing assembly;

[0018] Figure 3 It is Figure 2 The enlarged structure schematic diagram of A in the middle;

[0019] Figure 4 It is the split sectional view of the utility model in contraction assembly;

[0020] Figure 5 It is Figure 4 The enlarged structure schematic diagram of B in the middle.

[0021] The figure number indicates:

[0022] 1, chassis; 2, extraction mechanism; 3, traction rod; 4, bearing assembly; 41, first bearing hole plate; 42, second bearing hole plate; 43, third bearing hole plate; 44, inner groove; 45, positioning head; 46, spring; 47, positioning hole; 5, contraction assembly; 51, fixed cylinder; 52, vertical groove; 53, first support column; 54, second support column; 55, sliding ring; 56, positioning screw; 57, threaded hole; 58, positioning groove; 59, elastic positioning strip; 6, lead screw; 7, pressing plate; 8, drive handle. DETAILED DESCRIPTION

[0023] The above and other technical features and advantages of the utility model will be described in more detail below with reference to the drawings.

[0024] The embodiment provides a kind of technical scheme: a kind of manual solid phase extraction device, as Figure 1 And Figure 2 As shown, it includes chassis 1 and bearing assembly 4, the top of chassis 1 is provided with multiple extraction mechanisms 2, multiple extraction mechanisms 2 are annularly distributed on the top outer edge of chassis 1, two traction rods 3 are fixed on the top of chassis 1, bearing assembly 4 is arranged on the top of chassis 1, bearing assembly 4 is used to bear multiple sizes of extraction mechanism 2, bearing assembly 4 includes first bearing hole plate 41, the lower side of first bearing hole plate 41 is rotatably provided with second bearing hole plate 42, the lower side of second bearing hole plate 42 is rotatably provided with third bearing hole plate 43, the hole diameter of the internal bearing hole of first bearing hole plate 41, second bearing hole plate 42 and third bearing hole plate 43 gradually decreases, can be used to three extraction mechanisms 2, according to the size quantity of extraction mechanism 2 used as needed, the bearing hole plate of different sizes of extraction mechanism 2 applicable is stacked on the basis of first bearing hole plate 41, second bearing hole plate 42 and third bearing hole plate 43.

[0025] As Figure 2 AndFigure 3 As shown, the first bearing hole plate 41, the second bearing hole plate 42 and the third bearing hole plate 43 are all arranged outside the two traction rods 3, the interiors of the second bearing hole plate 42 and the third bearing hole plate 43 are both provided with two inner grooves 44, the two inner grooves 44 in the second bearing hole plate 42 and the third bearing hole plate 43 are symmetrically arranged, the interiors of the four inner grooves 44 are all slidably provided with a positioning head 45, one end of the positioning head 45 extends to the inner side of the bearing hole plate (i.e. the second bearing hole plate 42 or the third bearing hole plate 43), the interiors of the four inner grooves 44 are all fixedly provided with a spring 46, one end of the four springs 46 is respectively fixedly connected with one side of the four positioning heads 45, the two sides of the first bearing hole plate 41 and the two sides of the second bearing hole plate 42 are both provided with two positioning holes 47, when the spring 46 is in the original length, one end of the positioning head 45 is in a positioning hole 47 at a corresponding position, the two positioning holes 47 arranged on the two sides of the bearing hole plate (i.e. the second bearing hole plate 42 or the third bearing hole plate 43) are adjacent, when the positioning head 45 is rotated and clamped from one positioning hole 47 to another adjacent positioning hole 47, the bearing hole of the bearing hole plate (i.e. the second bearing hole plate 42 or the third bearing hole plate 43) corresponding to the positioning head 45 is in a hidden position, a protrusion is fixed above the second bearing hole plate 42 and the third bearing hole plate 43, which facilitates the second bearing hole plate 42 or the third bearing hole plate 43 to be pushed by the protrusion, and two identification stickers corresponding to the positioning holes 47 are arranged above the first bearing hole plate 41 and the second bearing hole plate 42, so that the direction in which the second bearing hole plate 42 or the third bearing hole plate 43 should be rotated can be easily known through the corresponding positions of the identification stickers and the protrusion.

[0026] As Figures 2-5As shown, the upper part of the chassis 1 is provided with a contraction assembly 5, which is used to change the distance between the bearing assembly 4 and the chassis 1 and the distance between the pressing plate 7 and the bearing assembly 4, and is suitable for various vertical size extraction mechanisms 2, the contraction assembly 5 comprises a fixed cylinder 51 fixed inside the first bearing hole plate 41, the fixed cylinder 51 is located at the center of the first bearing hole plate 41, the outer surface of the fixed cylinder 51 is provided with two vertical grooves 52, the inside of the fixed cylinder 51 is slidably provided with a first supporting column 53 and a second supporting column 54, one end of the first supporting column 53 is fixed to the inside of the chassis 1, connecting the chassis 1 and the bearing assembly 4, the outside of the fixed cylinder 51 is slidably provided with two sliding rings 55, the two sliding rings 55 are reversely arranged, the two sliding rings 55 are respectively fixed to the outside of the first supporting column 53 and the second supporting column 54, the inside of the two sliding rings 55 is threadedly connected with a positioning screw 56, the outer surface of the fixed cylinder 51 is provided with a plurality of threaded holes 57, since the two sliding rings 55 are reversely arranged, the directions of the two positioning screws 56 are also opposite, so that the plurality of threaded holes 57 on the outer surface of the fixed cylinder 51 are arranged in two vertical columns, the outer surface of the fixed cylinder 51 is provided with a plurality of positioning grooves 58, the plurality of positioning grooves 58 are also arranged in two vertical columns on the outer surface of the fixed cylinder 51, and each positioning groove 58 corresponds to a threaded hole 57, the inside of the two sliding rings 55 is fixed with an elastic positioning strip 59, the elastic positioning strip 59 corresponds to a threaded hole 57 to be clamped in, and the positioning screw 56 corresponds to one threaded hole 57.

[0027] As shown in Figure 1 and Figure 4 , one end of the second supporting column 54 is rotatably provided with a lead screw 6, the outside of the lead screw 6 is threadedly provided with a pressing plate 7, one end of the lead screw 6 is fixed with a driving handle 8, the pressing plate 7 is slidably arranged outside the two traction rods 3, the lead screw 6 is rotated through the driving handle 8, when the lead screw 6 rotates, the pressing plate 7 gradually moves down under the traction of the traction rod 3, the pressing plate 7 presses the upper end of the extraction mechanism 2 downward, helping the piston rod in the extraction mechanism 2 to move down at a uniform speed.

[0028] In use, according to the size of the position of the extraction mechanism 2 placed inside the bearing assembly 4, the bearing hole plate (i.e. the first bearing hole plate 41, the second bearing hole plate 42 and the third bearing hole plate 43) suitable for bearing the extraction mechanism 2 can be selected for use, if the smallest third bearing hole plate 43 is used, the bearing holes of the first bearing hole plate 41, the second bearing hole plate 42 and the third bearing hole plate 43 can be used, if the bearing holes of the second bearing hole plate 42 are needed, the third bearing hole plate 43 is rotated, the positioning head 45 in the third bearing hole plate 43 is clamped into another positioning hole 47 adjacent to the previous positioning hole 47 under the limiting of the spring 46, and the bearing holes of the third bearing hole plate 43 are hidden, similarly, if the bearing holes of the first bearing hole plate 41 are needed, the second bearing hole plate 42 is rotated to hide its bearing holes.

[0029] For different length of the extraction mechanism 2, the positioning screw 56 can be rotated out of the corresponding threaded hole 57, then the fixed cylinder 51 is pulled up while holding the base 1, the elastic positioning strip 59 inside the sliding ring 55 on the first support column 53 is deformed and moved out of the corresponding positioning slot 58 under the force until the fixed cylinder 51 is pulled to the appropriate position, the distance between the bearing assembly 4 and the base 1 is adjusted to the appropriate range, at this time the elastic positioning strip 59 is clamped into the closest positioning slot 58, the positioning screw 56 and one of the threaded holes 57 are corresponded and screwed into the threaded hole 57, the distance adjustment of the bearing assembly 4 and the base 1 is completed, similarly, the distance between the pressing plate 7 and the bearing assembly 4 is adjusted in the same way, the second support column 54 is pulled up while holding the bearing assembly 4, then the positioning screw 56 is screwed into the threaded hole 57 in different positions, the use range of the overall device is improved.

[0030] The above is only the preferred embodiment of the present application, which is only illustrative but not limiting. It is understood by those skilled in the art that many changes, modifications and even equivalents can be made to the present application within the spirit and scope of the present application, but all will fall within the protection scope of the present application.

Claims

1. A manual solid phase extraction device, characterized in that, Include: The chassis (1), the upper part of the chassis (1) is provided with a plurality of extraction mechanism (2), the upper part of the chassis (1) is fixed with two traction rod (3); The bearing assembly (4) is arranged on the upper part of the chassis (1), the bearing assembly (4) is used for bearing a plurality of sizes of extraction mechanism (2), the bearing assembly (4) includes first bearing hole plate (41), the lower part of the first bearing hole plate (41) rotates the second bearing hole plate (42), the lower part of the second bearing hole plate (42) rotates the third bearing hole plate (43), the first bearing hole plate (41), the second bearing hole plate (42) and the third bearing hole plate (43) are arranged outside the two traction rod (3), the inside of the second bearing hole plate (42) and the inside of the third bearing hole plate (43) are provided with two inner grooves (44), the inside of the four inner grooves (44) is slidably provided with a positioning head (45), four spring (46) is fixed in the inside of the four inner grooves (44), one end of the four spring (46) is fixedly connected with one side of the four positioning head (45), the two sides of the first bearing hole plate (41) and the two sides of the second bearing hole plate (42) are provided with two positioning holes (47).

2. The manual solid phase extraction device of claim 1, wherein, The upper part of the chassis (1) is provided with a contraction assembly (5), the contraction assembly (5) is used for changing the distance between the bearing assembly (4) and the chassis (1).

3. The manual solid phase extraction device of claim 2, wherein, The contraction assembly (5) includes a fixed cylinder (51) fixed inside the first bearing hole plate (41), the outer surface of the fixed cylinder (51) is provided with two vertical grooves (52), the inside of the fixed cylinder (51) is slidably provided with a first support column (53) and a second support column (54), one end of the first support column (53) is fixed in the inside of the chassis (1), the outside of the fixed cylinder (51) is slidably provided with two sliding rings (55), two sliding rings (55) are fixed on the outside of the first support column (53) and the second support column (54) respectively, the inside of the two sliding rings (55) is threadedly connected with a positioning screw (56), the outer surface of the fixed cylinder (51) is provided with a plurality of threaded holes (57).

4. The manual solid phase extraction device of claim 3, wherein, The outer surface of the fixed cylinder (51) is provided with a plurality of positioning grooves (58), the inner side of the two sliding rings (55) is fixed with an elastic positioning strip (59).

5. The manual solid phase extraction device of claim 3, wherein, One end of the second support column (54) rotates a lead screw (6), the outer surface of the lead screw (6) is threadedly connected with a pressing plate (7), one end of the lead screw (6) is fixed with a driving handle (8).

6. The manual solid phase extraction device of claim 5, wherein, The pressing plate (7) is slidably arranged outside the two traction rod (3).

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