Vertical automatic sample injection pushing mechanism
By designing a vertical automatic injection push mechanism, the problems of high cost and limited injection of existing automatic injection machines and detection instruments are solved, and efficient and standardized sampling of detection instruments are achieved, and detection efficiency is improved.
Patent Information
- Application Number
- CN202421515805.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-29
AI Technical Summary
The existing complete set of equipment that integrates automatic injection machines and detection instruments is expensive due to functional redundancy, and the injection volume, rate and injection rules are limited, so it is difficult to make changes as needed, which affects the full play of the high analytical and resolution capabilities of the detection instruments.
A vertical automatic sample injection push mechanism is designed, including a workbench, a vertical bracket, a sample tube seat and a pressing member. Through the cooperation of the vertical push rod and the driving member, the automatic lifting and pushing of the sampling tube is realized to meet different detection needs.
It realizes high-throughput and standardized sampling of detection instruments, saves time and effort, improves detection efficiency, and is compact and easy to connect with detection instruments.
Smart Images
Figure CN222913682U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vertical automatic sampling and pushing mechanism. Background Art
[0002] Currently, in pharmaceutical laboratories, food testing stations, water specimen testing centers, etc., there are many instruments that rely on droplet input for detecting components, matrices, etc. at the molecular ion level. This type of testing instrument has similar specifications and sampling modes and can be classified. Currently, the automatic sampler already equipped with this type of testing instrument is often integrated into another set of pretreatment equipment. The sample injection volume, rate, and sampling pattern are limited by the designs of different manufacturers for different purposes and are not easily changed as needed, such as the range, rate resolution, etc. Moreover, the complete set of equipment integrating the automatic sampler and the testing instrument often has high costs due to redundant functions, and even has small problems that cause sudden stops after being encapsulated, making maintenance troublesome.
[0003] Therefore, if this type of testing instrument is to fully exert its own high-resolution ability, in more and more cases, direct sampling and large-volume sampling are required, which requires a servo-demand and structurally designed module in the immediate previous link to maximize the ability of the instrument itself. However, this kind of summary thinking as a design guide has not been achieved yet. In view of this, this case is born. Summary of the Utility Model
[0004] The utility model makes improvements to the above-mentioned problems existing in the prior art. That is, the technical problem to be solved by the utility model is to provide a vertical automatic sampling and pushing mechanism.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a vertical automatic sampling and pushing mechanism, including a workbench and a vertical bracket fixedly arranged on the workbench. A sample tube seat that can be lifted vertically and is used for placing a sampling tube is arranged on the workbench. A pressing member that can be lifted vertically and is used for pressing down the sampling tube is arranged on the vertical bracket. A pressing limit member is arranged directly below the pressing member. A vertical push rod passes through the middle of the pressing member vertically. The vertical push rod is driven by a driving member to extend downward into the sampling tube.
[0006] Further, the pressing member includes a lifting slider driven by a first elastic member to move downward vertically, a U-shaped pressing block horizontally arranged below the lifting slider and used for contacting the top of the sampling tube. The front end of the lifting slider and the pressing block are connected by a vertically arranged connecting plate. A vertical through hole is formed in the middle of the lifting slider to facilitate the vertical push rod to slide through. A limit support plate for supporting the bottom of the lifting slider is fixed at the lower end of the vertical push rod.
[0007] Further, the first elastic member includes a pair of guiding and supporting blocks that are distributed left and right and located above the lifting slider. A first vertical guide rod is slidably inserted through each of the pair of guiding and supporting blocks in the vertical direction. The lower end of the first vertical guide rod is fixedly connected to the lifting slider. A first compression spring sleeved outside the first vertical guide rod is abutted between the bottom of the guiding and supporting block and the top of the lifting slider.
[0008] Further, vertical chutes corresponding to the positions of the pair of guiding and supporting blocks are respectively provided at the left and right ends of the vertical bracket. The vertical chutes penetrate longitudinally. A locking bolt for locking the guiding and supporting block to the vertical bracket is inserted through the vertical chute; a spring limiting block fixed to the vertical bracket is provided directly above each guiding and supporting block. The spring limiting block is threadedly penetrated by an adjusting bolt arranged vertically. The bottom of the adjusting bolt abuts against the top of the guiding and supporting block.
[0009] Further, the downward pressure limiting member includes a pair of downward pressure limiting plates fixed to the vertical bracket. The pair of downward pressure limiting plates are distributed on the left and right sides of the U-shaped downward pressure block and are used to contact the bottom of the lifting slider to limit the downward movement of the lifting slider.
[0010] Further, an entrance and exit facilitating the longitudinal entry and exit of the sampling tube are provided in the middle of the front end of the workbench. The entrance and exit are located on the front side of the vertical bracket; the sample tube seat includes a pair of sample tube supporting blocks distributed on the left and right sides of the entrance and exit. A supporting step for supporting the bottom of the upper flange of the sampling tube is provided at one adjacent end of the pair of sample tube supporting blocks. The pair of sample tube supporting blocks are driven by a second elastic member to move upward in the vertical direction.
[0011] Further, the second elastic member includes a pair of second vertical guide rods that are distributed left and right. The pair of second vertical guide rods are respectively fixed in the middle of the pair of sample tube supporting blocks and slidably penetrate through the workbench in the vertical direction. A second compression spring sleeved outside the second vertical guide rod is abutted between the bottom of the sample tube supporting block and the top surface of the workbench. A limit screw is screwed to the bottom of the second vertical guide rod. An adjusting gasket is provided between the screw head of the limit screw and the bottom surface of the workbench.
[0012] Further, a vertical guide rail is fixedly provided in the middle of the front end of the vertical bracket; the driving member includes a through-type lead screw motor vertically installed on the top of the vertical bracket. The lower end of the lead screw of the through-type lead screw motor is connected to a lead screw slider. The lead screw slider is connected to the upper end of the vertical push rod. Both the lead screw slider and the lifting slider are slidably engaged with the vertical guide rail.
[0013] Further, a horizontally L-shaped position sensing plate is fixed to the front end of the lead screw slider; a photoelectric limit sensor for detecting the position sensing plate is installed at the upper end of the left side surface of the vertical bracket.
[0014] Compared with the prior art, the utility model has the following effects: The structure of the utility model is compact and reasonable, and it is easy to connect with detection instruments. It can realize high-throughput and standardized pipelining injection for detection instruments, saving time and effort, reciprocating continuously, and effectively improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the utility model;
[0016] Figure 2 is Figure 1 an enlarged schematic view of part A in
[0017] Figure 3 is a schematic front view structure diagram of an embodiment of the utility model;
[0018] Figure 4 is a schematic side view structure diagram of an embodiment of the utility model;
[0019] Figure 5 is a schematic front view sectional structure diagram of an embodiment of the utility model;
[0020] Figure 6 is a schematic top view structure diagram of an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The following further describes the utility model in detail with reference to the drawings and specific embodiments.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model, 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, and thus should not be construed as a limitation to the present utility model.
[0023] Such as Figures 1 to 5As shown in the figure, a vertical automatic sampling pushing mechanism of the present utility model includes a horizontally arranged workbench 1 and a vertical support 2 fixedly arranged on the workbench 1. A sampling tube inlet and outlet 3 facilitating the longitudinal entry and exit of the sampling tube is provided in the middle of the front end of the workbench 1. The sampling tube inlet and outlet 3 is located on the front side of the vertical support 2. A sample tube seat 4 that can move up and down vertically and is used to place the sampling tube is provided on the workbench 1. A pressing member 6 that can move up and down vertically and is used to press down the sampling tube 5 is provided on the vertical support 2. A pressing limit member is provided directly below the pressing member 6, and the pressing limit member is used to limit the downward movement of the pressing member. A vertical push rod 7 passes through the middle of the pressing member 6 vertically, and the vertical push rod 7 is driven by a driving member 8 to extend downward into the sampling tube 5. During operation, the pressing member presses down the sampling tube arranged on the sample tube seat, which is the first push; after the pressing member contacts the pressing limit member, at this time the pressing member no longer presses down the sampling tube, and then the vertical push rod extends into the sampling tube under the drive of the driving member, which is the second push.
[0024] In this embodiment, the pressing member 6 includes a lifting slider 9 driven to move downward vertically by a first elastic member, and a U-shaped pressing block 10 horizontally arranged below the lifting slider 9 and used to contact the top of the sampling tube. The front ends of the lifting slider 9 and the pressing block 10 are connected by a vertically arranged connecting plate 11. A vertical through hole facilitating the sliding penetration of the vertical push rod 7 is provided in the middle of the lifting slider 9. The vertical push rod penetrates from the inner side of the pressing block. A limit support plate 31 for supporting the bottom of the lifting slider 9 is fixed at the lower end of the vertical push rod 7. When static, since the limit support plate at the lower end of the vertical push rod supports the lifting slider, at this time the first elastic member cannot push the lifting slider and the pressing block to move downward. When the vertical push rod moves downward, the lifting slider loses the support of the limit support plate, and the first elastic member uses its elastic force to push the lifting slider and the pressing block to move downward, facilitating the downward movement of the pressing block to press down the sampling tube. After the pushing is completed, the vertical push rod moves upward, and the limit support plate at the lower end of the vertical push rod re-supports the bottom of the lifting slider and drives the lifting slider to move upward and reset.
[0025] In this embodiment, the first elastic member includes a pair of guiding and supporting blocks 12 distributed left and right and located above the lifting slider 9. A first vertical guide rod 13 is slidably penetrated vertically through each of the pair of guiding and supporting blocks 12. The lower end of the first vertical guide rod 13 is fixedly connected to the lifting slider 9. The first vertical guide rod can guide the lifting and lowering movement of the lifting slider. A first compression spring 14 sleeved outside the first vertical guide rod 13 is abutted between the bottom of the guiding and supporting block 13 and the top of the lifting slider 9. The elastic force of the first compression spring is used to drive the lifting slider to move downward.
[0026] In this embodiment, vertical chutes 15 corresponding to the positions of a pair of guiding and supporting blocks 12 are respectively provided at the left and right ends of the vertical bracket 2. The vertical chutes 15 penetrate longitudinally, and locking bolts 16 for locking the guiding and supporting blocks 12 to the vertical bracket 2 are inserted into the vertical chutes 15. Above the position of each guiding and supporting block 12, a spring limiting block 17 fixed to the vertical bracket 2 is provided. A vertically arranged adjusting bolt 18 is threadedly inserted through the spring limiting block 17, and the bottom of the adjusting bolt 18 abuts against the top of the guiding and supporting block 12. By providing the vertical chutes and the adjusting bolts, the position of the guiding and supporting blocks can be adjusted up and down, thereby adjusting the pre-tightening force of the first compression spring.
[0027] In this embodiment, the downward pressure limiting member includes a pair of downward pressure limiting plates 19 fixed to the vertical bracket 2. The pair of downward pressure limiting plates 19 are distributed on the left and right sides of the U-shaped downward pressure block 10 and are used to contact the bottom of the lifting slider 9 to limit the downward movement of the lifting slider 9. When the lifting sliders move towards each other under the elastic force of the first compression spring and contact the downward pressure limiting plates, the first pushing ends at this time, and the lifting sliders cannot continue to move downward.
[0028] In this embodiment, the head of the sampling tube 5 is cylindrical, and the upper end of the sampling tube has an annular flange, such as a sampling tube similar to a T-shaped cylindrical head flange. To facilitate adaptation to the sampling tube, the sampling tube seat 4 includes a pair of sampling tube supporting blocks 20 distributed on the left and right sides of the entrance and exit. At the adjacent ends of the pair of sampling tube supporting blocks 20, there are supporting steps 21 for supporting the bottom of the upper flange of the sampling tube 5. The pair of sampling tube supporting blocks 20 are driven by a second elastic member to move upward vertically. When the downward pressure block presses down on the sampling tube, the sampling tube supporting blocks move downward accordingly, and the second elastic member is compressed; after the downward pressure block returns upward, the second elastic member uses the elastic force to push the sampling tube supporting blocks to return upward.
[0029] In this embodiment, the second elastic member includes a pair of second vertical guide rods 22 distributed left and right. The pair of second vertical guide rods 22 are respectively fixed to the middle parts of the pair of sampling tube supporting blocks 20 and slide vertically through the workbench 1. A second compression spring 23 sleeved outside the second vertical guide rods 22 is abutted between the bottom of the sampling tube supporting blocks 20 and the top surface of the workbench 1. A limit screw 24 is screwed to the bottom of the second vertical guide rod 22, and an adjusting gasket 25 is provided between the screw head of the limit screw 24 and the bottom surface of the workbench 1.
[0030] In this embodiment, a vertical guide rail 26 is fixedly installed in the middle of the front end of the vertical bracket 1; the driving member includes a through-type lead screw motor 27 vertically installed on the top of the vertical bracket 2. The lower end of the lead screw 271 of the through-type lead screw motor 27 is connected to a lead screw slider 28. The upper end of the vertical push rod 7 is buckled into the lead screw slider 28 so that the lead screw slider drives the vertical push rod to move vertically. Both the lead screw slider 28 and the lifting slider 9 are in sliding fit with the vertical guide rail 26.
[0031] In this embodiment, a horizontally L-shaped position sensing plate 29 is fixedly installed at the front end of the lead screw slider 28; a photoelectric limit sensor 30 for detecting the position sensing plate 29 is installed at the upper end of the left side surface of the vertical bracket 2. During operation, when the lead screw slider moves upward until the photoelectric limit sensor detects the position sensing plate, the control unit connected to the photoelectric limit sensor drives the through-type lead screw motor to stop working.
[0032] In this embodiment, during operation, after the first push, the second push, and the analysis waiting time of the detection instrument itself are completed, the vertical push rod and the lifting slider withdraw in sequence, that is: the vertical push rod resets upward until the limit support plate contacts the bottom of the lifting slider, and then the vertical push rod drives the lifting slider to reset upward. It should be noted that this sample injection pushing mechanism can be adapted to a modularized front guiding and pushing module (for example: a turntable sample feeding form module).
[0033] If the present utility model discloses or involves components or structural members that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by an integral casting process) (except when it is obvious that the integral forming process cannot be adopted).
[0034] In addition, for the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present utility model above, unless otherwise stated, their meanings include states or shapes that are approximate, similar, or close to them.
[0035] Any component provided by the present utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.
[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.
Claims
1. A vertical automatic sample introduction and pushing mechanism, characterized in that: It includes a workbench and a vertical bracket vertically fixed on the workbench, the workbench is provided with a sample tube holder which can be lifted vertically and is used to place a sampling tube, the vertical bracket is provided with a pressing piece which can be lifted vertically and is used to press down the sampling tube, a pressing limit piece is provided directly below the pressing piece, a vertical push rod is vertically penetrated through the middle of the pressing piece, and the vertical push rod is driven by a driving piece to extend downward into the sampling tube.
2. A vertical automatic sample injection and pushing mechanism according to claim 1, characterized in that: The pressing member includes a lifting slider driven by a first elastic member to move vertically downward, and a U-shaped pressing block horizontally arranged below the lifting slider and used to contact the top of the sampling tube. The lifting slider is connected to the front end of the pressing block through a vertically arranged connecting plate. The middle part of the lifting slider has a vertical through hole for facilitating the vertical push rod to slide through. The lower end of the vertical push rod is fixed with a limiting support plate for supporting the bottom of the lifting slider.
3. The vertical automatic sample injection and pushing mechanism according to claim 2, characterized in that: The first elastic member includes a pair of guide support blocks distributed on the left and right and located above the lifting slider, and a first vertical guide rod is respectively penetrated through the pair of guide support blocks along the vertical sliding direction, and the lower end of the first vertical guide rod is fixedly connected to the lifting slider, and a first compression spring sleeved on the outside of the first vertical guide rod is abutted between the bottom of the guide support block and the top of the lifting slider.
4. The vertical automatic sample injection and pushing mechanism according to claim 3, characterized in that: The left and right ends of the vertical bracket are respectively provided with vertical slide grooves corresponding to the positions of a pair of guide support blocks, the vertical slide grooves are penetrated in the longitudinal direction, and locking bolts for locking the guide support blocks on the vertical bracket are penetrated in the vertical slide grooves; a spring limit block fixed to the vertical bracket is provided directly above each guide support block, and a vertically arranged adjusting bolt is threadedly penetrated by the spring limit block, and the bottom of the adjusting bolt abuts against the top of the guide support block.
5. The vertical automatic sample injection and pushing mechanism according to claim 2, characterized in that: The downward pressure limiting member includes a pair of downward pressure limiting plates fixed on the vertical bracket, which are distributed on the left and right sides of the U-shaped downward pressure block and are used to contact the bottom of the lifting slider to limit the downward movement of the lifting slider.
6. The vertical automatic sample injection and pushing mechanism according to claim 1, characterized in that: An entrance and exit is provided in the middle of the front end of the workbench to facilitate the sampling tube to enter and exit in the longitudinal direction, and the entrance and exit are located on the front side of the vertical bracket; the sample tube seat includes a pair of sample tube support blocks distributed on the left and right sides of the entrance and exit, and a pair of adjacent ends of the sample tube support blocks are provided with a supporting step for supporting the bottom of the flange at the upper end of the sampling tube, and the pair of sample tube support blocks are driven by the second elastic member to move vertically upward.
7. A vertical automatic sample injection and pushing mechanism according to claim 6, characterized in that: The second elastic member includes a pair of second vertical guide rods distributed on the left and right, the pair of second vertical guide rods are respectively fixed in the middle of a pair of sample tube support blocks and slide vertically through the workbench, a second compression spring sleeved on the outside of the second vertical guide rod is abutted between the bottom of the sample tube support block and the top surface of the workbench, a limiting screw is threaded on the bottom of the second vertical guide rod, and an adjusting gasket is arranged between the screw head of the limiting screw and the bottom surface of the workbench.
8. The vertical automatic sample injection and pushing mechanism according to claim 1, characterized in that: A vertical guide rail is fixed to the middle part of the front end of the vertical bracket; the driving member includes a through-type lead screw motor vertically installed on the top of the vertical bracket, the lower end of the lead screw of the through-type lead screw motor is connected to a lead screw slider, the lead screw slider is connected to the upper end of the vertical push rod, and the lead screw slider and the lifting slider both slide in cooperation with the vertical guide rail.
9. The vertical automatic sample injection and pushing mechanism according to claim 8, characterized in that: A horizontal L-shaped position sensing plate is fixed to the front end of the screw slider; a photoelectric limit sensor for detecting the position sensing plate is installed on the upper end of the left side surface of the vertical bracket.