Auxiliary sampling device for micro-fluidic chip

Abstract

The utility model relates to the technical field of micro-fluidic chip experiment auxiliary devices, in particular to an auxiliary sample injection device for a micro-fluidic chip, which mainly comprises a mounting frame, a sample injection device and a sample injection device, the micro-fluidic chip is mounted on the mounting rack; the lifting mechanism is mounted on the mounting frame and is used for driving the liquid feeding device to move; the lifting mechanism comprises a sliding plate mounted on the mounting frame, and a connecting groove is formed in the sliding plate; the clamping mechanism is installed on the connecting groove in a sliding mode and used for fixing the liquid inlet device; the clamping mechanism comprises a sliding block installed on the connecting groove in a sliding mode, and a connecting circular plate is fixedly installed on the sliding block. The fixing mechanism is mounted on the mounting rack and is used for fixing the micro-fluidic chip; and the fixing mechanism comprises a fixing frame mounted on the mounting frame. According to the auxiliary sampling device for the micro-fluidic chip, the micro-fluidic chip can be fixed by controlling the fixing mechanism, the accuracy of liquid feeding can be kept, and the leakage problem can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of microfluidic chip experiment auxiliary devices, in particular to an auxiliary sample injection device for a microfluidic chip. Background Art

[0002] As a cutting-edge field of high-tech and multidisciplinary intersection, microfluidic chip technology has developed rapidly in recent years. It uses micro-channel networks as its structural features and integrates experimental and detection processes in chemistry, biology, medicine and other fields into tiny chips, realizing fast, efficient and accurate processing of samples. The emergence of microfluidic chip technology has greatly promoted the development of life sciences, chemical sciences and information sciences.

[0003] Because the fixing method between the chip and the sampling device is not stable enough, or external factors such as fluid pressure and temperature changes generated during the sampling process affect the sealing between the chip and the device, when the chip moves, it will not only affect the accuracy of the sampling, but may also cause the fluid to flow to the wrong channel, thereby affecting the experimental results. The leakage problem is even more serious. It not only causes the waste of expensive experimental materials, but also may pollute the experimental environment. Utility Model Content

[0004] The purpose of the present utility model is to provide an auxiliary sample injection device for a microfluidic chip to solve the problems raised by the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An auxiliary injection device for a microfluidic chip comprises: a mounting frame; a microfluidic chip mounted on the mounting frame; a lifting mechanism mounted on the mounting frame and used to drive a liquid injector to move; the lifting mechanism comprises a slide mounted on the mounting frame, the slide being provided with a connecting groove; a clamping mechanism slidably mounted on the connecting groove and used to fix the liquid injector; the clamping mechanism comprises a slider slidably mounted on the connecting groove, the slider being fixedly provided with a connecting circular plate; a fixing mechanism mounted on the mounting frame and used to fix the microfluidic chip; the fixing mechanism comprises a fixing frame mounted on the mounting frame.

[0007] Preferably, the lifting mechanism includes a hydraulic cylinder mounted on a mounting frame, an output end of the hydraulic cylinder is fixedly connected to the slide, and the slide is slidably connected to the mounting frame.

[0008] Preferably, a sliding groove is provided on the mounting frame, a slide plate is slidably connected to the sliding groove, and the slide plate is slidably connected to the mounting frame via the sliding groove.

[0009] Preferably, the clamping mechanism includes a first motor fixedly mounted on a slider, a rotating circular plate is provided at the output end of the first motor, a sliding cylinder is slidably connected to the rotating circular plate, a sliding rod is fixedly mounted on the sliding cylinder, the sliding rod is slidably connected to the connecting circular plate, and a clamp is fixedly mounted on the sliding rod.

[0010] Preferably, an arc-shaped circular groove is provided on the rotating circular plate, a sliding cylinder is slidably connected to the arc-shaped circular groove, and the sliding cylinder and the rotating circular plate are slidably connected via the arc-shaped circular groove.

[0011] Preferably, the fixing mechanism includes a second motor fixedly mounted on a fixing frame, a screw rod is provided at the output end of the second motor, a threaded block is threadedly connected to the screw rod, an inclined block is fixedly mounted on the threaded block, a fixing groove is provided on the mounting frame, the fixing groove is in contact with the inclined block, a connecting spring is fixedly mounted on the inclined block, and a protective plate is fixedly mounted on the connecting spring.

[0012] Compared with the existing technology, the beneficial effects of the present invention are: when in use, the staff can drive the liquid inlet to move up and down by controlling the lifting mechanism, so that the liquid inlet can be better connected to the chip, and the liquid inlet can be fixed by controlling the clamping mechanism so that it remains stable during the liquid filling process. The microfluidic chip can be fixed and clamped by controlling the fixing mechanism, so that the accuracy of the liquid filling can be maintained, and the occurrence of leakage problems can be effectively avoided.

[0013] The utility model can drive the inclined block to fix the microfluidic chip by controlling the rotation of the second motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present utility model.

[0018] In the picture:

[0019] 1. Mounting frame;

[0020] 2. Lifting mechanism; 201. Hydraulic cylinder; 202. Slide plate; 203. Slide groove; 204. Connecting groove;

[0021] 3. Clamping mechanism; 301. Slider; 302. First motor; 303. Connecting circular plate; 304. Sliding rod; 305. Clamping hand; 306. Sliding cylinder; 307. Arc-shaped circular groove; 308. Rotating circular plate;

[0022] 4. Fixing mechanism; 401. Threaded block; 402. Second motor; 403. Screw; 404. Fixing bracket; 405. Inclined block; 406. Fixing slot; 407. Connecting spring; 408. Protective plate;

[0023] 5. Microfluidic chip. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] like Figure 1-4 As shown, the present application provides an auxiliary sampling device for a microfluidic chip, including a mounting frame 1; a microfluidic chip 5, mounted on the mounting frame 1; a lifting mechanism 2, mounted on the mounting frame 1, for driving the liquid injector to move; the lifting mechanism 2 includes a slide 202 mounted on the mounting frame 1, and a connecting groove 204 is provided on the slide 202; a clamping mechanism 3, slidably mounted on the connecting groove 204, for fixing the liquid injector; the clamping mechanism 3 includes a slider 301 slidably mounted on the connecting groove 204, and a connecting circular plate 303 is fixedly mounted on the slider 301; a fixing mechanism 4, mounted on the mounting frame 1, for fixing the microfluidic chip 5; the fixing mechanism 4 includes a fixing frame 404 mounted on the mounting frame 1.

[0027] In this embodiment: because a lifting mechanism 2 is installed on the mounting frame 1, the lifting mechanism 2 can be controlled to drive the liquid inlet to move up and down, and the clamping mechanism 3 is slidably installed on the connecting groove 204. The liquid inlet can be fixed by controlling the clamping mechanism 3, so that the liquid inlet remains stable during use, and the microfluidic chip 5 can be fixed by controlling the fixing mechanism 4.

[0028] Specifically, such as Figure 1As shown, the lifting mechanism 2 includes a hydraulic cylinder 201 installed on the mounting frame 1, the output end of the hydraulic cylinder 201 is fixedly connected to the slide 202, and the slide 202 is slidably connected to the mounting frame 1; a slide groove 203 is provided on the mounting frame 1, and the slide 202 is slidably connected to the slide groove 203, and the slide 202 and the mounting frame 1 are slidably connected through the slide groove 203.

[0029] In this embodiment: because the lifting mechanism 2 includes a hydraulic cylinder 201 installed on the mounting frame 1, a slide 202 is provided at the output end of the hydraulic cylinder 201, and a connecting groove 204 is provided on the slide 202. The slide 202 is slidingly connected to the mounting frame 1 through a slide groove 203. By controlling the transmission of the hydraulic cylinder 201, the liquid inlet can be driven to move up and down.

[0030] Specifically, such as Figure 3 As shown, the clamping mechanism 3 includes a first motor 302 fixedly mounted on a slider 301, a rotating circular plate 308 is provided at the output end of the first motor 302, a sliding cylinder 306 is slidably connected to the rotating circular plate 308, a sliding rod 304 is fixedly mounted on the sliding cylinder 306, the sliding rod 304 is slidably connected to the connecting circular plate 303, and a clamping hand 305 is fixedly mounted on the sliding rod 304; an arc-shaped circular groove 307 is provided on the rotating circular plate 308, a sliding cylinder 306 is slidably connected to the arc-shaped circular groove 307, and the sliding cylinder 306 and the rotating circular plate 308 are slidably connected via the arc-shaped circular groove 307.

[0031] In this embodiment: because the clamping mechanism 3 includes a connecting circular plate 303 fixedly mounted on the slider 301, and the first motor 302 is fixedly mounted on the slider 301, a rotating circular plate 308 is provided at the output end of the first motor 302, and the rotating circular plate 308 and the sliding cylinder 306 are slidingly connected via an arc-shaped circular groove 307, and the sliding cylinder 306 is fixedly connected to the sliding rod 304, and the sliding rod 304 is slidingly connected to the connecting circular plate 303, and a clamping hand 305 is fixedly mounted on the sliding rod 304, by controlling the rotation of the first motor 302, the three groups of clamping hands 305 can be driven to quickly fix the liquid inlet, so that the liquid inlet can remain stable during use.

[0032] Specifically, such as Figure 4 As shown, the fixing mechanism 4 includes a second motor 402 fixedly mounted on a fixing frame 404, a screw rod 403 is provided at the output end of the second motor 402, a threaded block 401 is threadedly connected to the screw rod 403, an inclined block 405 is fixedly mounted on the threaded block 401, a fixing groove 406 is provided on the mounting frame 1, the fixing groove 406 is in contact with the inclined block 405, a connecting spring 407 is fixedly mounted on the inclined block 405, and a protective plate 408 is fixedly mounted on the connecting spring 407.

[0033] In this embodiment: because the fixing mechanism 4 includes a fixing frame 404 installed on the mounting frame 1, a second motor 402 is fixedly installed on the fixing frame 404, a screw rod 403 is provided at the output end of the second motor 402, a threaded block 401 is threadedly connected to the screw rod 403, an inclined block 405 is fixedly installed on the threaded block 401, the inclined block 405 is in contact with the fixing groove 406, and the inclined block 405 is fixedly connected to the protective plate 408 by a connecting spring 407. By controlling the rotation of the second motor 402, the inclined block 405 can be driven to fix the microfluidic chip 5 to avoid maintaining stability during use.

[0034] The specific solution of this invention is as follows: the staff can drive the liquid injector to move up and down by controlling the lifting mechanism 2, so as to better connect the liquid injector to the chip; the staff can fix the liquid injector by controlling the clamping mechanism 3, so that it remains stable during the liquid injection process; the staff can fix and clamp the microfluidic chip 5 by controlling the fixing mechanism 4, so as to maintain the accuracy of liquid injection and effectively avoid the occurrence of leakage problems.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative; within the spirit of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An auxiliary sample injection device for a microfluidic chip, characterized in that: include: Mounting frame (1); A microfluidic chip (5) is mounted on the mounting frame (1); A lifting mechanism (2) is mounted on the mounting frame (1) and is used to drive the liquid inlet to move; the lifting mechanism (2) includes a slide plate (202) mounted on the mounting frame (1), and a connecting groove (204) is provided on the slide plate (202); A clamping mechanism (3) is slidably mounted on the connecting groove (204) and is used to fix the liquid inlet; the clamping mechanism (3) comprises a slider (301) slidably mounted on the connecting groove (204), and a connecting circular plate (303) is fixedly mounted on the slider (301); A fixing mechanism (4) is mounted on the mounting frame (1) and is used to fix the microfluidic chip (5); the fixing mechanism (4) includes a fixing frame (404) mounted on the mounting frame (1).

2. The auxiliary sample injection device for a microfluidic chip according to claim 1, characterized in that: The lifting mechanism (2) comprises a hydraulic cylinder (201) mounted on a mounting frame (1), an output end of the hydraulic cylinder (201) being fixedly connected to a slide plate (202), and a slide plate (202) being slidably connected to the mounting frame (1).

3. The auxiliary sample injection device for a microfluidic chip according to claim 2, characterized in that: A sliding groove (203) is provided on the mounting frame (1), a slide plate (202) is slidably connected to the sliding groove (203), and the slide plate (202) and the mounting frame (1) are slidably connected via the sliding groove (203).

4. The auxiliary sample injection device for a microfluidic chip according to claim 1, characterized in that: The clamping mechanism (3) comprises a first motor (302) fixedly mounted on a slider (301); a rotating circular plate (308) is provided at the output end of the first motor (302); a sliding cylinder (306) is slidably connected to the rotating circular plate (308); a sliding rod (304) is fixedly mounted on the sliding cylinder (306); the sliding rod (304) is slidably connected to the connecting circular plate (303); and a clamping hand (305) is fixedly mounted on the sliding rod (304).

5. The auxiliary sample injection device for a microfluidic chip according to claim 4, characterized in that: The rotating circular plate (308) is provided with an arc-shaped circular groove (307), a sliding cylinder (306) is slidably connected to the arc-shaped circular groove (307), and the sliding cylinder (306) and the rotating circular plate (308) are slidably connected via the arc-shaped circular groove (307).

6. The auxiliary sample injection device for a microfluidic chip according to claim 1, characterized in that: The fixing mechanism (4) comprises a fixing frame (404) on which a second motor (402) is fixedly mounted, a screw rod (403) being provided at the output end of the second motor (402), a threaded block (401) being threadedly connected to the screw rod (403), an inclined block (405) being fixedly mounted on the threaded block (401), a fixing groove (406) being provided on the mounting frame (1), the fixing groove (406) being in contact with the inclined block (405), a connecting spring (407) being fixedly mounted on the inclined block (405), and a protective plate (408) being fixedly mounted on the connecting spring (407).

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