Uniform mixing and stirring mechanism and chemiluminescence immunoassay system

Abstract

The invention discloses a blending stirring mechanism which comprises a liquid collecting tank, a channel plate and a blending head, the channel plate is installed below a bottom plate of the liquid collecting tank, a closed gas containing cavity is formed between the bottom plate of the liquid collecting tank and the top surface of the channel plate, a vertical upper through hole is formed in the bottom plate of the liquid collecting tank, and a lower through hole is coaxially formed in the corresponding position of the channel plate; a transmission rod at the lower end of the mixing head penetrates through the upper through hole and the lower through hole, an annular ventilation gap is formed between the transmission rod and the upper through hole and communicated with the gas containing cavity and the interior of the liquid collecting groove, a gas channel is formed in the channel plate, an inlet of the gas channel is connected with a gas pump, and an outlet of the gas channel is communicated with the gas containing cavity. An air curtain is formed below the mixing head, so that liquid in the liquid collecting tank is prevented from seeping and leaking from the upper through hole, the damage and failure of the driver are avoided, and the safety and reliability of equipment are improved. The invention further discloses a chemiluminescence immunoassay system comprising the uniform mixing and stirring mechanism.

Description

Technical Field

[0001] The present invention relates to the field of chemical analysis equipment, and particularly to a mixing and stirring mechanism. In addition, the present invention also relates to a chemiluminescence immunoassay system including the above-mentioned mixing and stirring mechanism. Background Art

[0002] In various types of equipment and instruments such as chemiluminescence immunoassay systems, in order to achieve corresponding functions, a mixing and stirring mechanism needs to be provided, including a liquid collecting tank and a mixing head disposed inside the liquid collecting tank. The liquid in the liquid collecting tank is mixed and stirred by driving the mixing head to rotate. Further, in order to enable the mixing head to rotate normally, a driver needs to be disposed outside the liquid collecting tank. The driver is connected to the mixing head through a transmission rod. Therefore, a through hole for the transmission rod to pass through is provided on the bottom plate of the liquid collecting tank, which destroys the sealing performance of the bottom of the liquid collecting tank.

[0003] In the prior art, the sealing performance is ensured by setting a sealing ring. However, the transmission rod and the bottom plate of the liquid collecting tank rotate relative to each other, and the sealing performance between the two is poor. The liquid in the liquid collecting tank will leak downward from the through hole and flow along the transmission rod to the driver, affecting the normal use of the driver and even causing damage to the driver, thereby rendering the mixing and stirring function ineffective.

[0004] Therefore, how to provide a mixing and stirring mechanism that avoids liquid leakage is a technical problem that those skilled in the art need to solve currently. Summary of the Invention

[0005] The purpose of the present invention is to provide a mixing and stirring mechanism. An air pump blows gas into the liquid collecting tank through a gas cavity and an upper through hole, forming an air curtain below the mixing head to prevent liquid from oozing and leaking. Another purpose of the present invention is to provide a chemiluminescence immunoassay system including the above-mentioned mixing and stirring mechanism.

[0006] To solve the above technical problems, the present invention provides a mixing and stirring mechanism, including a liquid collecting tank, a channel plate, and a mixing head. The channel plate is installed below the bottom plate of the liquid collecting tank. A closed gas cavity is provided between the bottom plate of the liquid collecting tank and the top surface of the channel plate. A vertical upper through hole is provided on the bottom plate of the liquid collecting tank, and a lower through hole is coaxially provided at the corresponding position on the channel plate. The transmission rod at the lower end of the mixing head passes through the upper through hole and the lower through hole. An annular ventilation gap is provided between the transmission rod and the upper through hole. The ventilation gap communicates the gas cavity and the inside of the liquid collecting tank. A gas channel is provided inside the channel plate. The inlet of the gas channel is connected to an air pump, and the outlet of the gas channel communicates with the gas cavity.

[0007] Preferably, an installation groove with an opening downward is provided at the front end of the bottom of the liquid collecting tank, and the channel plate is embedded in the installation groove.

[0008] Preferably, the front end of the top plate of the installation groove is an inclined surface that slopes upward, the top surface of the channel plate is a flat surface, and a gas cavity is formed between the inclined surface and the flat surface.

[0009] Preferably, an annular rotating gap is provided between the transmission rod and the lower through hole, and the flow area of the rotating gap is smaller than the flow area of the ventilation gap.

[0010] Preferably, the gas channel includes a horizontal channel that extends horizontally, a vertical inlet channel is provided at the rear end of the horizontal channel, the inlet channel communicates with the air pump, a vertical outlet channel is provided at the front end of the horizontal channel, and the outlet channel communicates with the gas cavity.

[0011] Preferably, two of the mixing heads are symmetrically arranged, two upper through holes are correspondingly provided on the bottom plate of the liquid collecting tank, and the opening of the outlet channel is located at the central position of the connection line of the two upper through holes.

[0012] Preferably, an air path adapter is installed below the channel plate, a convex platform extending downward is provided at the rear end of the bottom surface of the channel plate, the convex platform is hermetically inserted into the air path adapter, and the inlet channel penetrates through the convex platform.

[0013] Preferably, a spiral protrusion is provided on the outer periphery of the mixing head, and the spiral direction in which the spiral protrusion rises is the same as the rotation direction of the mixing head.

[0014] Preferably, the cross section of the spiral protrusion is conical.

[0015] The present invention provides a chemiluminescence immunoassay system, including the mixing and stirring mechanism as described in any one of the above.

[0016] The present invention provides a mixing and stirring mechanism, including a liquid collecting tank, a channel plate and a mixing head. The channel plate is installed under the bottom plate of the liquid collecting tank. A closed gas cavity is provided between the bottom plate of the liquid collecting tank and the top surface of the channel plate. Vertical upper through holes are provided on the bottom plate of the liquid collecting tank. Lower through holes are coaxially provided at corresponding positions on the channel plate. The transmission rod at the lower end of the mixing head passes through the upper through hole and the lower through hole. An annular ventilation gap is provided between the transmission rod and the upper through hole. The ventilation gap communicates the gas cavity with the inside of the liquid collecting tank. A gas channel is provided inside the channel plate. The inlet of the gas channel is connected to an air pump, and the outlet of the gas channel communicates with the gas cavity.

[0017] During the working process, the air pump is started to deliver high-pressure gas. The high-pressure gas first enters the gas cavity, and then blows the gas upward along the transmission rod through the ventilation gap in the upper through hole, and finally blows into the liquid collecting tank, and a wind curtain is formed below the mixing head to prevent the liquid in the liquid collecting tank from leaking out through the upper through hole, avoid damage and failure of the driver, and improve the safety and reliability of the equipment.

[0018] The present invention also provides a chemiluminescent immunoassay system including the above-mentioned mixing and stirring mechanism. Since the above-mentioned mixing and stirring mechanism has the above-mentioned technical effects, the above-mentioned chemiluminescent immunoassay system should also have the same technical effects, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a specific embodiment of the mixing and stirring mechanism provided by the present invention;

[0020] Figure 2 is a front view sectional view of a specific embodiment of the mixing and stirring mechanism provided by the present invention;

[0021] Figure 3 is a perspective view of a stepped section of a specific embodiment of the mixing and stirring mechanism provided by the present invention;

[0022] Figure 4 is an enlarged view of a stepped section of a specific embodiment of the mixing and stirring mechanism provided by the present invention;

[0023] Figure 5 is a side view sectional view of a liquid collection tank in a specific embodiment of the mixing and stirring mechanism provided by the present invention;

[0024] Figure 6 is a schematic structural diagram of a mixing head in a specific embodiment of the mixing and stirring mechanism provided by the present invention.

[0025] Among them, the liquid collection tank 1, the channel plate 2, the mixing head 3, the gas cavity 4, the upper through hole 5, the lower through hole 6, the transmission rod 7, the air pump 8, the horizontal channel 9, the inlet channel 10, the outlet channel 11, the gas path adapter 12, the spiral protrusion 13, the front wall 14. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The core of the present invention is to provide a mixing and stirring mechanism. The air pump blows gas into the liquid collection tank through the gas cavity and the upper through hole, forming an air curtain below the mixing head to prevent liquid from leaking out. Another core of the present invention is to provide a chemiluminescent immunoassay system including the above-mentioned mixing and stirring mechanism.

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0028] Please refer to Figures 1 to 4 , Figure 1 is a schematic structural diagram of a specific embodiment of the mixing and stirring mechanism provided by the present invention; Figure 2 is a front view sectional view of a specific embodiment of the mixing and stirring mechanism provided by the present invention; Figure 3A stepped sectional axonometric view of a specific embodiment of the mixing and stirring mechanism provided by the present invention; Figure 4 A partially enlarged view of a stepped section of a specific embodiment of the mixing and stirring mechanism provided by the present invention.

[0029] A specific embodiment of the present invention provides a mixing and stirring mechanism, which is applied to chemical detection instruments and is suitable for various instrument devices in a humid working environment. It includes a liquid collecting tank 1, a channel plate 2, and a mixing head 3. The liquid collecting tank 1 is used to collect waste liquid. The mixing head 3 is located inside the liquid collecting tank 1. The channel plate 2 is installed under the bottom plate of the liquid collecting tank 1. At the same time, through a specific structure, a closed gas cavity 4 is formed between the bottom plate of the liquid collecting tank 1 and the top surface of the channel plate 2. A vertical upper through hole 5 is provided on the bottom plate of the liquid collecting tank 1, and a lower through hole 6 is coaxially provided at the corresponding position of the channel plate 2. During installation, the driving rod 7 connected to the lower end of the mixing head 3 sequentially passes through the upper through hole 5 and the lower through hole 6, and finally connects to an external driver. Among them, the outer diameter of the driving rod 7 is smaller than the inner diameter of the upper through hole 5, so that an annular ventilation gap is formed between the driving rod 7 and the upper through hole 5. The lower end of the ventilation gap communicates with the gas cavity 4, and the upper end of the ventilation gap is inside the liquid collecting tank 1. Further, a gas channel is provided inside the channel plate 2. The inlet of the gas channel is connected to an air pump 8, and the outlet of the gas channel communicates with the gas cavity 4, forming a complete gas flow channel starting from the air pump 8, passing through the gas channel, the gas cavity 4, the communication gap in sequence, and finally entering the inside of the liquid collecting tank 1.

[0030] Among them, a cylindrical sleeve protruding upward can be provided at the position of the bottom plate of the liquid collecting tank 1 corresponding to the upper through hole 5. The inner hole of the cylindrical sleeve is the upper through hole 5 to ensure stable surrounding of the driving rod 7.

[0031] During the working process, the driver drives the mixing head 3 to rotate inside the liquid collecting tank 1 through the driving rod 7. At the same time, the air pump 8 is started to deliver high-pressure gas. The high-pressure gas first enters the gas cavity 4, and then blows the gas upward along the driving rod 7 through the ventilation gap in the upper through hole 5, and finally blows into the liquid collecting tank 1, forming an air curtain below the mixing head 3 to prevent the liquid in the liquid collecting tank 1 from leaking out through the upper through hole 5, avoiding damage and failure of the driver, and improving the safety and reliability of the equipment.

[0032] In the mixing and stirring mechanism provided by the specific embodiment of the present invention, an installation groove with an opening downward is provided at the front end of the bottom of the liquid collecting tank 1. The channel plate 2 is embedded in the installation groove. That is, a stepped structure is provided at the front end of the liquid collecting tank 1, and the channel plate 2 is embedded on the stepped structure, hiding the channel plate 2 and making the overall structure of the device smoother without the channel plate 2 protruding from the bottom plate of the liquid collecting tank 1. Of course, the channel plate 2 can also be embedded in the middle of the bottom plate of the channel plate 2, which is within the protection scope of the present invention. Further, a front wall 14 extending downward is provided at the front end of the installation groove. At the same time, a positioning step is provided at the front end of the channel plate 2, and the front wall 14 surrounds and is embedded on the positioning step. A guiding inclined surface can also be provided at the front end of the positioning step, which has a certain sealing performance after installation and is convenient for equipment installation.

[0033] To form the gas cavity 4, the front end of the top plate of the installation groove is an inclined surface sloping upward. The top plate of the installation groove is the front half of the bottom plate of the liquid collecting tank 1. The front half of the top plate of the installation groove is an inclined surface, and the rear half is a flat plate. The height of the front end of the entire top plate of the installation groove is higher than the height of the middle part, and the height of the middle part is the same as the height of the rear end. At the same time, the top surface of the channel plate 2 is a plane, and a gas cavity 4 with a triangular cross-section is formed between the front inclined surface and the top surface of the channel plate 2. The rear flat surface and the top surface of the channel plate 2 are in close contact, which is convenient for positioning and stable connection. Further, a support column extending downward can also be provided in the middle of the inclined surface to contact the top surface of the channel plate 2 to realize the support of the two. A positioning groove can also be provided at the corresponding position, and the support column is inserted into the positioning groove.

[0034] Preferably, in order to enable the transmission rod 7 to rotate smoothly, there is an annular rotation gap between the transmission rod 7 and the lower through hole 6, but the flow area of the rotation gap is much smaller than the flow area of the ventilation gap, ensuring that the gas preferentially flows out from the ventilation gap.

[0035] In the mixing and stirring mechanism provided by the specific embodiment of the present invention, the gas channel includes a horizontal channel 9 extending horizontally. A vertical inlet channel 10 is provided at the rear end of the horizontal channel 9. The inlet channel 10 extends downward and is connected to the air pump 8. A vertical outlet channel 11 is provided at the front end of the horizontal channel 9. The outlet channel 11 extends upward and is connected to the gas cavity 4. The gas sequentially passes through the inlet channel 10, the horizontal channel 9, and the outlet channel 11 and enters the gas cavity 4. The structure of the gas channel can also be adjusted according to the situation, which is within the protection scope of the present invention.

[0036] Preferably, a gas circuit adapter 12 is installed below the channel plate 2, and the gas circuit adapter 12 is connected to the air pump 8 through a gas pipeline. In order to ensure sealing, a downwardly extending boss is provided at the rear end of the bottom surface of the channel plate 2, and the boss seal is inserted into the gas circuit adapter 12, and an O-ring is provided on the outer periphery of the boss. At the same time, the inlet channel 10 passes through the boss. The bottom plate of the sump 1 and the channel plate 2 are connected by multiple bolts arranged longitudinally. Similarly, the channel plate 2 and the gas circuit adapter 12 are also connected by bolts. Of course, other connection and fixing methods can also be used.

[0037] Please refer to Figure 5 , Figure 5 The figure is a side cross-sectional view of a liquid collecting tank in a specific implementation manner of the mixing and stirring mechanism provided by the present invention.

[0038] In order to improve the stirring and mixing effect, two mixing heads 3 can be symmetrically arranged, and the two mixing heads 3 are arranged horizontally in parallel, and then two upper through holes 5 are correspondingly arranged on the bottom plate of the liquid collecting tank 1, and the opening of the outlet channel 11 on the channel plate 2 is located at the center position of the line connecting the two upper through holes 5, balancing the air flow at the two upper through holes 5.

[0039] Please refer to Figure 6 , Figure 6 A schematic structural diagram of a mixing head in a specific embodiment of the mixing and stirring mechanism provided by the present invention.

[0040] On the basis of the mixing and stirring mechanisms provided in the above-mentioned specific embodiments, a spiral protrusion 13 is provided on the outer periphery of the mixing head 3, and the spiral direction of the spiral protrusion 13 is the same as the rotation direction of the mixing head 3. When the mixing head 3 rotates, the liquid on the outer wall of the mixing head 3 will splash around along the spiral protrusion 13 in the ascending direction to prevent the liquid from gathering under the mixing head 3. When the mixing head 3 is stationary, the spiral protrusion 13 can prevent the liquid from dripping on the side wall surface.

[0041] Furthermore, the spiral protrusion 13 is a continuous conical structure, and its cross-section is a triangle, an arc triangle or a pentagon, that is, the cross-section of the spiral protrusion 13 has a base and a tip, the bottom plate is close to the periphery of the mixing head 3, and the tip extends outward to form the apex of the conical structure. When the liquid reaches the apex of the cone, it will easily detach from the surface of the mixing head 3, thereby improving the efficiency of liquid detachment.

[0042] In addition to the above-mentioned mixing and stirring mechanism, a specific embodiment of the present invention further provides a chemiluminescent immunoassay system including the above-mentioned mixing and stirring mechanism. For the structures of other parts of the chemiluminescent immunoassay system, please refer to the prior art and will not be described in detail herein.

[0043] The above has introduced in detail the mixing and stirring mechanism and the chemiluminescence immunoassay system provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A mixing and stirring mechanism, characterized in that, It includes a liquid collecting tank (1), a channel plate (2) and a mixing head (3). The channel plate (2) is installed under the bottom plate of the liquid collecting tank (1). A closed gas cavity (4) is provided between the bottom plate of the liquid collecting tank (1) and the top surface of the channel plate (2). A vertical upper through hole (5) is provided on the bottom plate of the liquid collecting tank (1). A lower through hole (6) is coaxially provided at the corresponding position on the channel plate (2). A transmission rod (7) at the lower end of the mixing head (3) passes through the upper through hole (5) and the lower through hole (6). An annular ventilation gap is provided between the transmission rod (7) and the upper through hole (5). The ventilation gap communicates the gas cavity (4) and the inside of the liquid collecting tank (1). A gas channel is provided inside the channel plate (2). The inlet of the gas channel is connected to an air pump (8), and the outlet of the gas channel communicates with the gas cavity (4).

2. The mixing and stirring mechanism according to claim 1, characterized in that, An installation groove with an opening downward is provided at the front end of the bottom of the liquid collecting tank (1), and the channel plate (2) is embedded in the installation groove.

3. The mixing and stirring mechanism according to claim 2, characterized in that, The front end of the top plate of the installation groove is an inclined surface that slopes upward, and the top surface of the channel plate (2) is a flat surface. The gas cavity (4) is formed between the inclined surface and the flat surface.

4. The mixing and stirring mechanism according to claim 3, wherein, An annular rotation gap is provided between the transmission rod (7) and the lower through hole (6), and the flow area of the rotation gap is smaller than the flow area of the ventilation gap.

5. The mixing and stirring mechanism according to claim 1, characterized in that, The gas channel includes a horizontally extending horizontal channel (9). A vertical inlet channel (10) is provided at the rear end of the horizontal channel (9). The inlet channel (10) communicates with the air pump (8). A vertical outlet channel (11) is provided at the front end of the horizontal channel (9). The outlet channel (11) communicates with the gas cavity (4).

6. The mixing and stirring mechanism according to claim 5, wherein It includes two symmetrically arranged mixing heads (3). Two corresponding upper through holes (5) are provided on the bottom plate of the liquid collecting tank (1). The opening of the outlet channel (11) is located at the central position of the connection line of the two upper through holes (5).

7. The mixing and stirring mechanism according to claim 6, wherein An air path adapter (12) is installed below the channel plate (2). A convex platform extending downward is provided at the rear end of the bottom surface of the channel plate (2). The convex platform is hermetically inserted into the air path adapter (12), and the inlet channel (10) penetrates through the convex platform.

8. The homogenizing and stirring mechanism according to any one of claims 1 to 7, characterized in that, A spiral protrusion (13) is provided on the outer periphery of the mixing head (3), and the spiral direction in which the spiral protrusion (13) rises is the same as the rotation direction of the mixing head (3).

9. The mixing and stirring mechanism according to claim 8, wherein, The cross section of the spiral protrusion (13) is conical.

10. A chemiluminescence immunoassay system, characterized in that, It includes a mixing and stirring mechanism according to any one of claims 1 to 9.

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