Microfluidic disc

Abstract

The utility model relates to the technical field of microfluidics, and discloses a microfluidics disc, which comprises a plate body and a feeding pipe, the feeding pipe is fixedly inserted in the plate body, an operator can simply and conveniently control the opening and closing of a baffle plate by using the combination of a control rod and a control button, so that the tedious operation of liquid injection by using an ultra-fine injector is avoided, and the production efficiency is improved. Meanwhile, the rotation operation of the control button is more intuitive and easier than manual injection by using a superfine injector, the manual operation burden in the experiment is reduced, the inflow amount of liquid can be accurately controlled through the opening and closing design of the baffle, and therefore liquid waste and unnecessary leakage are reduced, and the flow guide slope of the flow guide block is arranged, so that the operation is more convenient. Therefore, liquid can be guided to flow to the feeding port, instability of liquid flowing is reduced, and it is ensured that the liquid can stably enter the feeding channel.

Description

Technical Field

[0001] The utility model relates to the technical field of microfluidics, in particular to a microfluidics disk. Background Art

[0002] A microfluidic disk is a device used to control and manipulate liquids on a microscale. It is usually composed of multiple microchannels and microstructures, which can achieve complex functions such as liquid flow, mixing, separation and reaction. This technology is widely used in biomedicine, chemical analysis, environmental monitoring and other fields.

[0003] At present, when most microfluidic disks are used, an extremely fine syringe is needed to inject liquid into the microfluidic disk. The use of an extremely fine syringe for liquid injection requires highly precise operation, which may increase the complexity and difficulty of the experimental operation; therefore, it does not meet the existing needs. In this regard, we propose a microfluidic disk. Utility Model Content

[0004] The utility model provides a microfluidic disk, which is more intuitive and easier to operate than manual injection using an extremely fine syringe, and has the beneficial effect of reducing the burden of manual operation in experiments. It solves the problem mentioned in the above background technology that most of the microfluidic disks currently need to use an extremely fine syringe to inject liquid into the microfluidic disk when in use. The use of an extremely fine syringe for liquid injection requires highly precise operation, which may increase the complexity and difficulty of experimental operations.

[0005] The utility model provides the following technical solution: a microfluidic disk, comprising a plate body and a feeding tube, the feeding tube being fixedly inserted in the plate body, a collecting cavity being provided in the plate body, a plurality of detection cavities being provided in the plate body, a detection channel being connected between the collecting cavity and the detection cavity, a feeding trough being provided in the feeding tube, a feeding port being provided in the feeding trough, a feeding channel being connected between the feeding port and the collecting cavity, and a switch component for controlling the switch of the feeding port being provided in the feeding trough.

[0006] As an optional solution for a microfluidic disk described in the utility model, wherein: the switch assembly includes a control rod inserted into the loading trough, and a baffle corresponding to the loading port is fixedly installed on the control rod, and the baffle is located on the upper side of the loading port, and a control button is fixedly connected to the end of the control rod.

[0007] As an optional solution for a microfluidic disk described in the utility model, wherein: a socket corresponding to the control rod is opened on the feeding tube, the control rod is rotatably inserted into the socket, and the control rod is connected to the control button through the socket.

[0008] As an optional solution of the microfluidic disk described in the utility model, wherein: a guide block is installed in the feeding trough, the guide block is sleeved outside the feeding port, and a guide slope is arranged on the guide block.

[0009] As an optional solution for a microfluidic disk described in the utility model, wherein: a tube cover is installed on the feeding tube, a fixing block is installed at the bottom of the tube cover, a fixing groove corresponding to the fixing block is opened in the feeding tube, and the fixing block is plugged into the fixing groove.

[0010] As an optional solution for a microfluidic disk described in the utility model, wherein: a first sealing ring is installed in the socket, a second sealing ring is installed at the bottom of the tube cover, a damping rubber strip is installed outside the fixed block, the first sealing ring and the sealing ring are set as sealing rings, and the damping rubber strip is set as a rubber strip.

[0011] As an optional solution of the microfluidic disk described in the utility model, wherein: a plurality of damping balls are arranged outside the baffle, and the damping balls are arranged as elastic rubber balls.

[0012] As an optional solution of the microfluidic disk described in the utility model, wherein: the plate body is configured as a transparent plastic plate, and the feeding tube is configured as a transparent plastic tube.

[0013] The utility model has the following beneficial effects:

[0014] 1. The microfluidic disk allows the operator to easily control the opening and closing of the baffle by using a combination of a control rod and a control button, thereby avoiding the tedious operation of using an extremely fine syringe for liquid injection. At the same time, the rotation operation of the control button is more intuitive and easier to operate than manual injection using an extremely fine syringe, reducing the burden of manual operation in the experiment. The switch design of the baffle can accurately control the inflow of liquid, thereby reducing liquid waste and unnecessary leakage. The setting of the guide slope of the guide block can guide the liquid to flow to the upper feed port, reducing the instability of the liquid flow and ensuring that the liquid can smoothly enter the feeding channel.

[0015] 2. The microfluidic disk can effectively prevent the leakage of liquid at the connection between the feeding tube and the plate body through the arrangement of the first sealing ring and the second sealing ring. This ensures that the liquid will not overflow or leak from the interface during the injection process, thereby improving the accuracy and stability of the experiment. The damping rubber strip outside the fixed block can further enhance the sealing performance and prevent the liquid from leaking through the tiny gap at the interface. In particular, during the operation, when the sealing ring may have a risk of leakage due to pressure changes, the damping rubber strip can play a role in supplementing the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the main body cutaway structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the main plane structure of the utility model.

[0019] Figure 4 For the utility model Figure 2 A in the figure is an enlarged structural diagram.

[0020] Figure 5 For the utility model Figure 2 The enlarged structural diagram at B in FIG.

[0021] In the figure: 110, plate body; 111, feeding tube; 112, collecting chamber; 113, detection chamber; 114, detection channel; 115, feeding trough; 116, feeding port; 117, feeding channel; 120, switch assembly; 121, control lever; 122, baffle; 123, control button; 124, jack; 125, guide block; 126, guide slope; 130, pipe cover; 131, fixing block; 132, fixing groove; 133, first sealing ring; 134, second sealing ring; 135, damping rubber strip; 136, damping ball. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] Example 1: This example is intended to solve the problem that most microfluidic disks currently require an extremely fine syringe to inject liquid into the microfluidic disk. Using an extremely fine syringe to inject liquid requires highly precise operation, which may increase the complexity and difficulty of experimental operation. Please refer to Figure 1-Figure 5 A microfluidic disk includes a plate body 110 and a feeding tube 111, the feeding tube 111 is fixedly inserted in the plate body 110, a collecting chamber 112 is opened in the plate body 110, a plurality of detection chambers 113 are opened in the plate body 110, a detection channel 114 is connected between the collecting chamber 112 and the detection chamber 113, a feeding trough 115 is opened in the feeding tube 111, a feeding port 116 is arranged in the feeding trough 115, a feeding channel 117 is connected between the feeding port 116 and the collecting chamber 112, and a switch component 120 for controlling the switch of the feeding port 116 is arranged in the feeding trough 115.

[0024] The switch assembly 120 includes a control rod 121 inserted into the feeding trough 115, and a baffle 122 corresponding to the feeding port 116 is fixedly installed on the control rod 121. The baffle 122 is located on the upper side of the feeding port 116, and a control button 123 is fixedly connected to the end of the control rod 121. A socket 124 corresponding to the control rod 121 is provided on the feeding tube 111, and the control rod 121 is rotatably inserted into the socket 124, and the control rod 121 is connected to the control button 123 through the socket 124. A guide block 125 is installed in the feeding trough 115, and the guide block 125 is sleeved outside the feeding port 116. A guide slope 126 is provided on the guide block 125. A plurality of damping balls 136 are provided outside the baffle 122, and the damping balls 136 are set as elastic rubber balls.

[0025] The operator pours the liquid into the feeding trough 115, operates the control rod 121 through the control button 123, rotates the control rod 121, and places the baffle 122 above the feeding port 116 to prevent the liquid from flowing in. As the control rod 121 is rotated, the baffle 122 rotates coaxially with the control rod 121 to open the feeding port 116, and the liquid then enters the feeding channel 117 through the feeding port 116. The inclined surface of the guide block 125 helps the liquid flow smoothly into the feeding port 116 to ensure stable flow. The liquid enters the collecting chamber 112 through the feeding channel 117. Due to the presence of the damping ball 136, the impact force is reduced when operating the baffle 122, and the flow of the liquid is more stable.

[0026] When the liquid injection is completed, the operator rotates the control rod 121 in the opposite direction again, and the baffle 122 returns to its original position, closing the feed port 116 to prevent the liquid from continuing to flow. At this time, the liquid has been successfully transported to the collection chamber 112, and subsequent experimental operations can be performed.

[0027] In this embodiment: by using the combination of the control rod 121 and the control button 123, the operator can easily control the opening and closing of the baffle 122, thereby avoiding the tedious operation of using an extremely fine syringe for liquid injection. At the same time, the rotation operation of the control button 123 is more intuitive and easy to operate than manual injection using an extremely fine syringe, reducing the burden of manual operation in the experiment. The switch design of the baffle 122 can accurately control the inflow of liquid, thereby reducing liquid waste and unnecessary leakage. Through the setting of the guide slope 126 of the guide block 125, the liquid can be guided to flow to the upper feed port 116, reducing the instability of the liquid flow and ensuring that the liquid can smoothly enter the feeding channel 117.

[0028] Embodiment 2: This embodiment is intended to promote the solution of the problem that the liquid may overflow or leak from the interface during the injection process. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 5A tube cover 130 is installed on the feeding tube 111 , a fixing block 131 is installed at the bottom of the tube cover 130 , a fixing groove 132 corresponding to the fixing block 131 is opened in the feeding tube 111 , and the fixing block 131 is plugged into the fixing groove 132 .

[0029] A first sealing ring 133 is installed in the jack 124, a second sealing ring 134 is installed at the bottom of the tube cover 130, a damping rubber strip 135 is installed outside the fixing block 131, the first sealing ring 133 and the sealing ring are configured as sealing rings, and the damping rubber strip 135 is configured as a rubber strip. The plate body 110 is configured as a transparent plastic plate, and the feeding tube 111 is configured as a transparent plastic tube. The comprehensive design of the tube cover 130, the fixing block 131, the sealing ring and the damping rubber strip 135 forms a more complete sealing and fixing system. This system can effectively reduce the problems caused by liquid leakage, unstable interfaces and operational errors, thereby improving the reliability and performance of the entire microfluidic disk system.

[0030] In this embodiment: the first sealing ring 133 and the second sealing ring 134 can effectively prevent the leakage of liquid at the connection between the feeding tube 111 and the plate body 110. This ensures that the liquid will not overflow or leak from the interface during the injection process, thereby improving the accuracy and stability of the experiment. The damping rubber strip 135 outside the fixed block 131 can further enhance the sealing performance and prevent the liquid from leaking through the tiny gap at the interface. In particular, during the operation, when the sealing ring may have a risk of leakage due to pressure changes, the damping rubber strip 135 can play a role in supplementing the seal.

[0031] 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.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A microfluidic disk, comprising a plate body (110) and a feeding tube (111), characterized in that: The feeding tube (111) is fixedly inserted in the plate body (110), a collecting chamber (112) is provided in the plate body (110), a plurality of detection chambers (113) are provided in the plate body (110), a detection channel (114) is connected between the collecting chamber (112) and the detection chamber (113), a feeding trough (115) is provided in the feeding tube (111), a feeding port (116) is provided in the feeding trough (115), a feeding channel (117) is connected between the feeding port (116) and the collecting chamber (112), and a switch component (120) for controlling the switch of the feeding port (116) is provided in the feeding trough (115).

2. A microfluidic disk according to claim 1, characterized in that: The switch assembly (120) comprises a control rod (121) inserted into the feeding trough (115), a baffle (122) corresponding to the feeding port (116) being fixedly mounted on the control rod (121), the baffle (122) being located on the upper side of the feeding port (116), and a control button (123) being fixedly connected to the end of the control rod (121).

3. A microfluidic disk according to claim 2, characterized in that: The feeding tube (111) is provided with a socket (124) corresponding to the control rod (121); the control rod (121) is rotatably inserted into the socket (124), and the control rod (121) is connected to the control button (123) via the socket (124).

4. The microfluidic disk according to claim 1, characterized in that: A guide block (125) is installed in the feeding trough (115), the guide block (125) is sleeved outside the feeding port (116), and a guide slope (126) is provided on the guide block (125).

5. The microfluidic disk according to claim 3, characterized in that: A tube cover (130) is installed on the feeding tube (111), a fixing block (131) is installed at the bottom of the tube cover (130), a fixing groove (132) corresponding to the fixing block (131) is opened in the feeding tube (111), and the fixing block (131) is plugged into the fixing groove (132).

6. The microfluidic disk according to claim 5, characterized in that: A first sealing ring (133) is installed in the insertion hole (124), a second sealing ring (134) is installed at the bottom of the tube cover (130), and a damping rubber strip (135) is installed outside the fixing block (131); the first sealing ring (133) and the sealing ring are configured as sealing rings, and the damping rubber strip (135) is configured as a rubber strip.

7. The microfluidic disk according to claim 2, characterized in that: A plurality of damping balls (136) are arranged outside the baffle (122), and the damping balls (136) are configured as elastic rubber balls.

8. The microfluidic disk according to claim 1, characterized in that: The plate body (110) is configured as a transparent plastic plate, and the feeding tube (111) is configured as a transparent plastic tube.

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