A culture medium quantitative packaging device

Abstract

The present invention relates to the technical field of culture medium packaging, and in particular to a culture medium quantitative packaging device. It comprises: a main body, wherein the main body is rotatably connected to a lower support plate and an upper support plate, the main body is provided with a guide mechanism, and the guide mechanism is located between the lower support plate and the upper support plate; the guide mechanism comprises: a mounting member, a support ring, a guide plate and a sliding member, the mounting member is fixed to the main body, the guide plate is provided with a spiral groove, and the sliding member slides within the spiral groove. The present invention guides the sliding member to perform a spiral motion during the packaging operation, so that the culture medium spreads in the culture dish when it is injected into the culture dish, thereby shortening the flow distance of the culture medium in the culture dish and allowing the culture medium to spread by itself before solidification. This eliminates the step of shaking after packaging, shortens the time required for packaging a single culture dish, and improves the overall packaging efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of culture medium packaging, in particular to a culture medium quantitative packaging device. Background Art

[0002] Culture medium is a growth matrix that provides nutrients for microorganisms or cells. It consists of a precise combination of water, carbon source, nitrogen source, inorganic salts, and growth factors. To ensure experimental reproducibility, control costs, and standardize production, culture medium often requires quantitative packaging. As an automated device, culture medium dispensers can quickly, accurately, and sterilely dispense preset volumes of fluidized culture medium continuously, significantly improving packaging efficiency and consistency. They are key equipment in modern biological laboratories and production plants.

[0003] However, when existing filling instruments handle gel culture media, gel culture media have poorer fluidity than liquid culture media and are sensitive to temperature, so they need to be stored in a constant temperature water bath before filling to maintain fluidity; after being filled into the culture dish through a fixed-position discharge tube, they need to be immediately shaken slightly to promote their uniform spreading before solidification. Compared with filling liquid culture media, this additional shaking step increases the time required to fill a single culture dish, resulting in a decrease in overall filling efficiency. Summary of the Invention

[0004] The present invention provides a culture medium quantitative packaging device to overcome the disadvantage of low packaging efficiency of the existing gel culture medium.

[0005] The technical solution of the present invention is: a culture medium quantitative filling device, comprising: a main body, the main body is rotatably connected to a lower support plate and an upper support plate, the main body is provided with a guide mechanism for changing the position of the culture base in the culture dish, the guide mechanism is located between the lower support plate and the upper support plate; the guide mechanism comprises: a mounting part, a support ring, a guide plate and a sliding part, the mounting part is fixedly connected to the main body, the support ring is fixedly connected to the mounting part, the guide plate is arranged between the mounting part and the support ring, the guide plate is provided with a spiral groove, the sliding part slides in a limited position in the spiral groove, the sliding part is connected to the storage tank for supplying culture medium by a flexible conduit, and the mounting part is provided with a power component that provides power for the movement of the sliding part.

[0006] Furthermore, the power assembly includes: a power disc, a discharge piece and a power piece, the power disc is rotatably connected to the support ring, the power disc is coaxial with the guide disc, the power disc is provided with a straight groove, the discharge piece slides within the straight groove, the discharge piece is connected to the sliding piece, the power piece is fixedly connected to the mounting piece, and the output shaft of the power piece and the power disc are transmitted through a gear set.

[0007] Furthermore, the central axis of the guide plate does not pass through the spiral groove.

[0008] Furthermore, the guide plate is provided with a plurality of guide protrusions and a plurality of guide grooves located on the spiral groove, all the guide protrusions and all the guide grooves correspond one to one, and the guide protrusions and the guide grooves are used together to constrain the sliding path of the sliding member.

[0009] Furthermore, the guide plate is connected to the mounting member in a sliding and rotational manner, and there is friction between the two.

[0010] Furthermore, a plurality of support protrusions distributed in an annular manner are fixed to the lower side of the guide plate, and the upper part of the support ring is provided with positioning grooves and limiting grooves equal in number to the support protrusions. The positioning grooves and the limiting grooves are both used to limit the support protrusions, and the depth of the positioning grooves is greater than the depth of the limiting grooves.

[0011] Furthermore, a spring is provided between the mounting member and the guide plate.

[0012] Furthermore, the sliding member and the facing sides of the discharge member both have magnetic force, so that the sliding member and the facing sides of the discharge member fit together, the sliding member and the discharge member are connected to each other by an elastic tube, and the facing sides of the sliding member and the discharge member are both provided with extrusion grooves.

[0013] Furthermore, the elastic coefficient of the elastic tube is smaller than the elastic coefficient of the spring.

[0014] Furthermore, it also includes: an L-shaped rod and a positioning column, the L-shaped rod is fixed to the sliding member, the positioning column is slidably and rotatably connected to the mounting member, the L-shaped rod passes through the positioning column and is slidably connected to the positioning column, and the L-shaped rod and the positioning column jointly prevent the sliding member from rotating.

[0015] The beneficial effect of adopting the above technical solution is that: the present invention guides the sliding part to perform spiral motion during the packaging operation, so that the culture medium spreads out in the culture dish when it is injected into the culture dish, thereby shortening the flow distance of the culture medium in the culture dish and allowing the culture medium to spread out by itself before solidification. This eliminates the step of shaking after packaging, shortens the time required for packaging a single culture dish, and improves the overall packaging efficiency.

[0016] The guide protrusions and guide grooves are used to change the movement trajectory of the sliding member, introducing additional direction changes and disturbances on the original movement path of the sliding member, making the distribution of the culture medium in the culture dish more disordered and improving the uniformity of the initial distribution of the culture medium in the culture dish.

[0017] The position of the spiral groove is changed by rotating the guide plate, thereby increasing the coverage area of ​​the culture dish by the sliding member on the overall moving path, improving the uniformity of the initial distribution of the culture medium in the culture dish, and shortening the time required for the culture medium to spread evenly in the culture dish by relying on its own fluidity.

[0018] The relative positions of the supporting protrusions and the positioning grooves are changed by rotating the guide plate to change the height of the guide plate, thereby changing the vertical distance between the discharge piece and the culture dish. This keeps the kinetic energy of the culture medium unchanged when it falls into the culture dish, and promotes uniform distribution of the culture medium in the culture dish.

[0019] The elastic tube is squeezed by the relative misalignment between the sliding member and the discharge member, so that the culture medium accumulated in the elastic tube flows into the discharge member, reducing the probability of residual liquid at the end of the discharge member, thereby reducing the probability of culture medium falling on the main body and causing contamination to the main body and culture dish. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting member and the power disk of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the mounting member and the guide plate of the present invention;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of the guide plate and the sliding member of the present invention;

[0024] Figure 5 An exploded view of the mounting member, support ring, and guide plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide plate and the supporting protrusion of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the power disc and the discharge piece of the present invention;

[0027] Figure 8 It is a three-dimensional structural cross-sectional view of the sliding member and the discharging member of the present invention.

[0028] Figure numbers: 1-main body, 2-lower support plate, 3-upper support plate, 4-mounting part, 5-support ring, 6-guide plate, 601-spiral groove, 602-guide protrusion, 603-guide groove, 7-sliding part, 8-power plate, 801-straight groove, 9-discharging part, 10-power part, 11-support protrusion, 111-positioning groove, 112-limiting groove, 12-spring, 13-elastic tube, 131-extrusion groove, 14-L-shaped rod, 15-positioning column. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0030] Example 1

[0031] This embodiment provides a culture medium quantitative packaging device to improve the efficiency of culture medium quantitative packaging.

[0032] See also Figures 1 to 5 , a culture medium quantitative packaging device, comprising: a main body 1, (see Figure 1 ) The left side of the main body 1 is rotatably connected to a storage rack for storing culture dishes, and the storage rack is provided with seven storage stations. A peristaltic pump is installed on the right part of the front side of the main body 1, and the right side of the main body 1 is rotatably connected to a lower support plate 2 and an upper support plate 3. The lower support plate 2 is used to support and drive the culture dish to move, and the upper support plate 3 is used to limit the lid of the culture dish and drive it to move, and the main body 1 is provided with a driving module to drive the lower support plate 2 and the upper support plate 3 to rotate together. Four stations are provided on the lower support plate 2 and the upper support plate 3. The two stations located on the left part of the lower support plate 2 and the upper support plate 3 are respectively coaxial with the adjacent storage stations on the storage rack. The main body 1, the storage rack, the peristaltic pump, the lower support plate 2 and the upper support plate 3 together constitute a culture medium dispenser (this is an existing device and will not be described in detail in this article). A guide mechanism for changing the position of the culture base in the culture dish is provided on the main body 1, and the guide mechanism is located between the lower support plate 2 and the upper support plate 3.

[0033] See also Figures 2 to 5 The guiding mechanism includes: a mounting part 4, a support ring 5, a guide plate 6 and a sliding part 7. The mounting part 4 is fixed to the main body 1 through two brackets. The mounting part 4 is coaxial with the adjacent workstations on the lower support plate 2 and the upper support plate 3. The support ring 5 is located in the mounting part 4 and is fixed thereto. The guide plate 6 is arranged between the mounting part 4 and the support ring 5. The guide plate 6 is provided with a spiral groove 601. The sliding part 7 slides within the spiral groove 601 within a limited position. The sliding part 7 is connected to the storage tank for supplying culture medium through a flexible conduit, and the above-mentioned flexible conduit passes through the peristaltic pump. A power component that provides power for the movement of the sliding part 7 is provided on the mounting part 4.

[0034] The above arrangement can be achieved by guiding the sliding member 7 to perform spiral motion during the packaging operation, so that the culture medium is spread out in the culture dish when it is injected into the culture dish, thereby shortening the flow distance of the culture medium in the culture dish and allowing the culture medium to spread out by itself before solidification. This eliminates the step of shaking after packaging, shortens the time required for packaging a single culture dish, and improves the overall packaging efficiency.

[0035] See also Figures 3 to 7 , the power assembly includes: a power disc 8, a discharge piece 9 and a power piece 10, (see Figure 7 ) The power disc 8 is connected to four L-shaped parts by bolts. The inner side of the support ring 5 is provided with a slide groove. The upper part of the L-shaped part is stuck in the slide groove of the support ring 5, so that the power disc 8 is rotatably connected to the support ring 5; the power disc 8 is coaxial with the guide disc 6. The power disc 8 is provided with a straight groove 801. The center point of the straight groove 801 is located on the central axis of the power disc 8. The central axis of the guide disc 6 does not pass through the spiral groove 601, so that the sliding member 7 will not be located on the central axis of the guide disc 6 and the power disc 8 and cannot move; the discharge member 9 is located in the straight groove 801 slides within the limit, the discharge member 9 is connected to the sliding member 7, and the vertical distance between the lower end of the discharge member 9 and the culture dish is determined by the fluidity of the culture medium to be packaged and the power of the peristaltic pump, so that the culture medium ejected from the discharge member 9 has the maximum kinetic energy under the premise of colliding with the culture dish without splashing, and the above kinetic energy is used to assist the culture medium to spread in the culture dish; the power member 10 is fixedly connected to the mounting member 4, and the power member 10 can be a servo motor, and the output shaft of the power member 10 and the power disk 8 are transmitted through a gear set.

[0036] It should be noted that, in this embodiment, the connection between the guide plate 6 and the mounting member 4 can be regarded as fixed; the connection between the discharge member 9 and the sliding member 7 can be regarded as fixed and connected.

[0037] See also Figure 6 The guide plate 6 is provided with a plurality of guide protrusions 602 and a plurality of guide grooves 603 located on the spiral groove 601. The number of the guide protrusions 602 and the guide grooves 603 are equal, and the number of the above two can be determined according to the unfolded length of the spiral groove 601; all the guide protrusions 602 and all the guide grooves 603 correspond one to one.

[0038] The above setting can realize changing the moving trajectory of the sliding member 7 by using the guide protrusion 602 and the guide groove 603, introducing additional directional changes and disturbances on the original moving path of the sliding member 7, making the distribution of the culture medium in the culture dish more disordered, and improving the uniformity of the initial distribution of the culture medium in the culture dish.

[0039] The subpackaging process after adopting the above setting is as follows: the culture dishes to be filled with culture medium are stacked on the storage rack of the main body 1; one end of the flexible conduit is connected to the storage tank of the culture medium, and the flexible conduit is passed through the peristaltic pump, and then the other end of the flexible conduit is connected to the sliding member 7; during subpackaging, the main body 1 is started, and all the culture dishes are controlled to be stuck in the working positions of the lower support plate 2 and the upper support plate 3 in turn, the lower support plate 2 and the upper support plate 3 rotate together and drive the culture dishes thereon to pass through the sliding member 7 in turn, and when the culture dishes pass through the sliding member 7, the sliding member 7 injects the culture medium into the culture dishes through the discharge member 9; the lower support plate 2 and the upper support plate 3 drive the culture dishes containing the culture medium to rotate, and finally are put back on the storage rack of the main body 1.

[0040] In the process of the lower support plate 2 and the upper support plate 3 driving the culture dish to rotate, when the culture dish is coaxial with the mounting part 4, the lower support plate 2 and the upper support plate 3 temporarily stop rotating, and at this time the peristaltic pump and the power part 10 are started together, and the peristaltic pump squeezes the culture medium in the flexible conduit to flow to the sliding part 7, and the culture medium entering the sliding part 7 is injected into the culture dish through the discharge part 9; the output shaft of the power part 10 drives the power disk 8 to rotate through the gear group, and the power disk 8 squeezes the discharge part 9 to move through the straight groove 801, and the discharge part 9 drives the sliding part 7 to slide along the spiral groove 601, and the discharge part 9 and the sliding part 7 perform spiral motion together (in this process, the discharge part 9 and the sliding part 7 shake under the guidance of the guide protrusion 602 and the guide groove 603), so that the culture medium is injected into various parts of the culture dish, thereby improving the uniformity of the culture medium in the culture dish.

[0041] After the sliding member 7 moves to the end outside the spiral groove 601, the output shaft of the power member 10 reverses and drives the power disk 8 to reverse. The above steps are repeated in reverse until the sliding member 7 moves to the end inside the spiral groove 601, the peristaltic pump and the power member 10 are stopped, and then the lower support plate 2 and the upper support plate 3 continue to rotate until the next culture dish is coaxial with the mounting member 4, at which time the lower support plate 2 and the upper support plate 3 stop rotating. The above steps are repeated until the packaging operation of all culture dishes is completed.

[0042] Example 2

[0043] This embodiment provides a culture medium quantitative dispensing device, which provides a function of changing the position of the spiral groove 601 based on the embodiment 1.

[0044] See also Figure 6 The guide plate 6 is connected to the mounting member 4 in a sliding and rotational manner, and there is friction between the two. The friction first causes the sliding member 7 to slide along the spiral groove 601, and then causes the guide plate 6 to rotate.

[0045] The above setting can realize the change of the position of the spiral groove 601 by the rotation of the guide plate 6, thereby increasing the coverage area of ​​the sliding member 7 on the culture dish on the overall moving path, improving the uniformity of the initial distribution of the culture medium in the culture dish, and shortening the time required for the culture medium to spread evenly in the culture dish relying on its own fluidity.

[0046] The packaging process after adopting the above-mentioned setting is as follows: when the sliding member 7 moves to the end outside the spiral groove 601, the output shaft of the power member 10 continues to rotate and causes the power disk 8 to rotate 180°. During the rotation of the power disk 8, the power disk 8 squeezes the guide disk 6 through the straight groove 801, the discharge member 9 and the sliding member 7, causing the guide disk 6 to rotate 180° together; then the power member 10 controls the power disk 8 to reverse, causing the sliding member 7 to slide in the opposite direction along the spiral groove 601, and finally move to the end inside the spiral groove 601. At this time, the peristaltic pump stops, and then the power disk 8 continues to rotate in the opposite direction by 180°, causing the guide disk 6 to rotate in the opposite direction by 180° and reset. In this way, the position of the spiral groove 601 is changed, and the moving path of the sliding member 7 is changed, thereby making the distribution of the culture medium in the culture dish more uniform, reducing the flow distance of the culture medium in the culture dish, and ensuring that the culture medium can cover the culture dish by itself within a limited time.

[0047] Example 3

[0048] This embodiment provides a culture medium quantitative packaging device, which provides a function of changing the vertical distance between the discharge member 9 and the culture dish based on the embodiment 2.

[0049] See also Figures 4 to 7 The lower side of the guide plate 6 is fixed with three annular support protrusions 11, and the support protrusion 11 is provided with two symmetrically distributed inclined surfaces. The upper part of the support ring 5 is provided with three annular positioning grooves 111 and three annular limiting grooves 112. The positioning grooves 111 and the limiting grooves 112 are both used to limit the support protrusions 11. The depth of the positioning grooves 111 is greater than the depth of the limiting grooves 112. Initially, the support protrusion 11 is located in the adjacent positioning grooves 111 and fits therewith, that is, the shape of the positioning grooves 111 matches the shape of the support protrusion 11.

[0050] The above arrangement can achieve the goal of changing the relative positions of the support protrusion 11 and the positioning groove 111 by rotating the guide plate 6 to change the height of the guide plate 6, so that the kinetic energy of the culture medium ejected from the discharge piece 9 when colliding with the culture dish and the culture medium in the culture dish tends to be consistent, thereby maximizing the use of the kinetic energy of the culture medium to enable it to spread itself and promote uniform distribution of the culture medium in the culture dish.

[0051] See also Figure 4 and Figure 5A spring 12 is provided between the mounting member 4 and the upper side of the guide plate 6. The elastic force of the spring 12 is greater than the friction force between the mounting member 4 and the guide plate 6. The spring 12 provides a downward squeezing force for the guide plate 6 to keep the relative position of the supporting protrusion 11 and the adjacent positioning groove 111 unchanged. In this way, the guide plate 6 is limited to prevent the guide plate 6 from rotating when the sliding member 7 has not moved to the end of the spiral groove 601.

[0052] The process after adopting the above-mentioned setting is as follows: when the sliding member 7 slides along the spiral groove 601, the discharging member 9 spreads a layer of culture medium to the bottom of the culture dish. When the sliding member 7 moves to the end outside the spiral groove 601 and drives the guide plate 6 to rotate, the guide plate 6 drives the support protrusion 11 to rotate, and the support protrusion 11 slides out of the positioning groove 111, causing the guide plate 6 to move up and compress the spring 12. As the guide plate 6 rotates, the support protrusion 11 passes over the adjacent positioning groove 111 and finally enters the adjacent limiting groove 112. At this time, the support protrusion 11 is limited by the spring 12 and the limiting groove 112.

[0053] As the guide plate 6 moves upward, the guide plate 6 drives the sliding member 7 and the discharge member 9 to move upward together, so that the vertical distance between the discharge member 9 and the culture dish increases, so that the vertical distance between the discharge member 9 and the culture medium in the culture dish is equal to the initial vertical distance between the discharge member 9 and the culture dish, so that the culture medium flowing out of the discharge member 9 can maintain the best kinetic energy to impact the culture dish, and rely on the kinetic energy of the culture medium itself to help the culture medium spread on the bottom of the culture dish.

[0054] When the sliding member 7 moves to the end inside the spiral groove 601, the guide plate 6 rotates in the opposite direction and drives the supporting protrusion 11 to move out of the limiting groove 112, and finally re-enter the adjacent positioning groove 111. At this time, the guide plate 6 moves down and resets, the spring 12 recovers, and the discharge member 9 and the sliding member 7 are both reset.

[0055] Example 4

[0056] This embodiment provides a culture medium quantitative packaging device, which provides a function of eliminating residual liquid at the end of the discharge member 9 on the basis of embodiment 3.

[0057] See also Figure 8, the facing sides of the sliding member 7 and the discharge member 9 have magnetic force, and the facing sides of the sliding member 7 and the discharge member 9 are in contact with each other, so that the sliding member 7 and the discharge member 9 can maintain contact; the sliding member 7 and the discharge member 9 are connected to the elastic tube 13, and the facing sides of the sliding member 7 and the discharge member 9 are provided with an extrusion groove 131. The vertical depth of the extrusion groove 131 is less than the wall thickness of the elastic tube 13, which controls the moving distance of the sliding member 7 and the discharge member 9 when they are misaligned, so that the central axes of the sliding member 7 and the discharge member 9 can maintain a parallel state, relying on the sliding member 7 and the discharge member 9. The dislocated movement squeezes the elastic tube 13; the elastic coefficient of the elastic tube 13 is smaller than the elastic coefficient of the spring 12. After the sliding member 7 moves to the end outside the spiral groove 601, the magnetic attraction between the sliding member 7 and the discharge member 9 and the elastic force of the elastic tube 13 can enable the guide plate 6 to overcome the limitation of the positioning groove 111 on the support protrusion 11 and rotate. After the sliding member 7 moves to the end inside the spiral groove 601, the magnetic attraction between the sliding member 7 and the discharge member 9 and the elastic force of the elastic tube 13 cannot enable the guide plate 6 to overcome the limitation of the limiting groove 112 on the support protrusion 11 and rotate.

[0058] The above arrangement can realize that the elastic tube 13 is squeezed by the relative misalignment between the sliding member 7 and the discharge member 9, so that the culture medium accumulated in the elastic tube 13 flows into the discharge member 9, thereby reducing the probability of residual liquid existing at the end of the discharge member 9, and further reducing the probability of the culture medium falling onto the main body 1 and causing contamination to the main body 1 and the culture dish.

[0059] The process after adopting the above setting is as follows: after the sliding member 7 moves to the end inside the spiral groove 601, the peristaltic pump stops, and as the power disk 8 continues to rotate, the discharge member 9 and the sliding member 7 are dislocated while maintaining contact, so that the elastic tube 13 is squeezed and deformed. When the elastic tube 13 is deformed to the limit state, the sliding member 7 and the discharge member 9 can no longer be dislocated. At this time, the discharge member 9 drives the sliding member 7 to move through the elastic tube 13 and the magnetic force, and the sliding member 7 drives the guide disk 6 to rotate in the opposite direction, so that the guide disk 6 drives the support protrusion 11 to move out of the limit The guide plate 6 then moves forwards and moves along the guide plate 6. When the guide plate 6 moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6. When the guide plate 6 moves forwards and moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6. When the guide plate 6 moves forwards and moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6. When the guide plate 6 moves forwards and moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6. When the guide plate 6 moves forwards and moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6. When the guide plate 6 moves forwards and moves along the guide plate 6, the guide plate 6 moves forwards and moves along the guide plate 6.

[0060] When the elastic tube 13 is squeezed, its internal volume decreases, and the culture medium originally accumulated in the elastic tube 13 is squeezed and flows into the discharge piece 9, causing the residual liquid originally at the lower end of the discharge piece 9 (that is, the part of the culture medium "hanging" at the lower end of the discharge piece 9 under the combined action of its own tension and the external atmospheric pressure) to increase rapidly and fall off. In this way, the phenomenon of residual liquid in the discharge piece 9 after the injection of culture medium is stopped is eliminated, and the residual liquid of the discharge piece 9 is prevented from falling onto the main body 1 when the culture dish rotates, causing contamination to the main body 1 and the culture dish behind it.

[0061] Example 5

[0062] This embodiment provides a culture medium quantitative dispensing device, which provides a function of preventing the flexible catheter from being entangled and twisted on the basis of embodiment 4.

[0063] See also Figures 3 to 5 , and also includes: an L-shaped rod 14 and a positioning column 15. The L-shaped rod 14 is fixed to the sliding member 7. A limiting ring for fixing the flexible conduit is provided on the L-shaped rod 14 near the sliding member 7. The positioning column 15 is slidably and rotatably connected to the mounting member 4. The L-shaped rod 14 passes through the positioning column 15 and is slidably connected to it. The L-shaped rod 14 and the positioning column 15 jointly prevent the sliding member 7 from rotating.

[0064] The above arrangement can achieve the limiting effect of the L-shaped rod 14 on the sliding member 7, thereby preventing the sliding member 7 from rotating due to uneven friction during the movement along the spiral groove 601, thereby maintaining the patency of the flexible catheter.

[0065] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A culture medium quantitative packaging device, characterized in that: include: A main body (1), wherein the main body (1) is rotatably connected to a lower support plate (2) and an upper support plate (3), and a guiding mechanism for changing the position of the culture base in the culture dish is provided on the main body (1), and the guiding mechanism is located between the lower support plate (2) and the upper support plate (3); The guide mechanism comprises: a mounting member (4), a support ring (5), a guide disc (6) and a sliding member (7); the mounting member (4) is fixedly connected to the main body (1); the support ring (5) is fixedly connected to the mounting member (4); the guide disc (6) is arranged between the mounting member (4) and the support ring (5); the guide disc (6) is provided with a spiral groove (601); the sliding member (7) slides within the spiral groove (601) in a limited manner; the sliding member (7) is connected to a storage tank for supplying culture medium via a flexible conduit; and a power component for providing power for the movement of the sliding member (7) is provided on the mounting member (4); The power assembly includes: A power disc (8), a discharge member (9) and a power member (10), wherein the power disc (8) is rotatably connected to the support ring (5), the power disc (8) is coaxial with the guide disc (6), the power disc (8) is provided with a straight groove (801), the discharge member (9) slides within the straight groove (801), the discharge member (9) is communicated with the sliding member (7), the power member (10) is fixedly connected to the mounting member (4), and the output shaft of the power member (10) and the power disc (8) are driven by a gear train; The central axis of the guide disc (6) does not pass through the spiral groove (601); The guide plate (6) is provided with a plurality of guide protrusions (602) and a plurality of guide grooves (603) located on the spiral groove (601), all the guide protrusions (602) and all the guide grooves (603) are in one-to-one correspondence, and the guide protrusions (602) and the guide grooves (603) are used together to constrain the sliding path of the sliding member (7); A plurality of annularly distributed support protrusions (11) are fixedly connected to the lower side of the guide plate (6); the upper portion of the support ring (5) is provided with positioning grooves (111) and limiting grooves (112) equal in number to the number of the support protrusions (11); the positioning grooves (111) and the limiting grooves (112) are both used to limit the support protrusions (11); the depth of the positioning grooves (111) is greater than the depth of the limiting grooves (112); The sliding member (7) and the discharging member (9) have magnetic forces on the facing sides thereof, so that the sliding member (7) and the discharging member (9) are in contact with each other. The sliding member (7) and the discharging member (9) are connected to each other by an elastic tube (13). The sliding member (7) and the discharging member (9) are provided with extrusion grooves (131) on the facing sides thereof.

2. A culture medium quantitative packaging device according to claim 1, characterized in that: The guide plate (6) is connected to the mounting member (4) in a sliding and rotational manner, and friction exists between the two.

3. A culture medium quantitative packaging device according to claim 2, characterized in that: A spring (12) is provided between the mounting member (4) and the guide plate (6).

4. A culture medium quantitative packaging device according to claim 3, characterized in that: The elastic coefficient of the elastic tube (13) is smaller than the elastic coefficient of the spring (12).

5. A culture medium quantitative packaging device according to claim 3, characterized in that: Also includes: An L-shaped rod (14) and a positioning column (15), wherein the L-shaped rod (14) is fixed to the sliding member (7), the positioning column (15) is slidably and rotatably connected to the mounting member (4), the L-shaped rod (14) passes through the positioning column (15) and is slidably connected to the positioning column (15), and the L-shaped rod (14) and the positioning column (15) jointly prevent the sliding member (7) from rotating.

Images