Device for automatically adding culture solution into test tube

Abstract

The utility model relates to an edible mushroom auxiliary production device, in particular to an automatic test tube culture solution adding device which comprises a bottom frame, a mounting table plate is arranged on the bottom frame, a double-sliding-table device is arranged in the middle of the mounting table plate, the double-sliding-table device comprises a first linear motion platform, and a first positioning seat is arranged on a sliding table of the first linear motion platform. A test tube positioning jig is arranged on the first positioning seat; a culture solution adding device is arranged at the rear end of the mounting table plate, a backflow box is arranged in front of the culture solution adding device, and the backflow box is arranged between the two groups of first linear motion platforms; a transfer table is arranged at the front end of the mounting table plate, a second positioning seat is fixedly arranged on the transfer table, and a test tube positioning jig is placed on the second positioning seat; a heat preservation liquid storage box is arranged below the bottom frame, and a matched heating and heat preservation device is arranged in the heat preservation liquid storage box.

Description

Technical Field

[0001] The utility model relates to an auxiliary production device for edible fungi, in particular to a device for automatically adding culture solution to a test tube. Background Art

[0002] When cultivating mushroom spawn, the spawn culture solution needs to be quantitatively added to the test tube, the spawn is added to the culture solution test tube, and then the test tube is tilted at a certain angle to increase the contact area of ​​the spawn. In actual production, the culture solution is manually injected into the test tube. In this process, the amount of liquid added to the test tube is difficult to control, the liquid addition time is long, and the efficiency is not high. On the other hand, the culture solution will condense if it is exposed to the air for a long time. If the spawn cannot be added to the test tube in time and the test tube is tilted, the culture effect of the spawn will be affected to a certain extent. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a device for automatically adding culture fluid to test tubes, thereby improving the efficiency of adding culture fluid, increasing utilization, improving work efficiency, and reducing costs.

[0004] The technical solution adopted by the utility model is:

[0005] The device for automatically adding culture fluid to test tubes comprises a base frame, a mounting platen is arranged on the base frame, a double slide device is arranged in the middle of the mounting platen, the double slide device comprises a first linear motion platform, a first positioning seat, and a test tube positioning fixture; the first linear motion platform is arranged along both sides of the center line of the mounting platen, the first positioning seat is arranged on the slide of the first linear motion platform, and the first positioning seat is arranged on the test tube positioning fixture; the test tube positioning fixture comprises a test tube mounting rack, and the test tube rack is provided with a test tube seat that can be rotated and tilted at a certain angle; the culture fluid adding device is arranged at the rear end of the mounting platen, the culture fluid adding device is arranged in the middle position between the two groups of first linear motion platforms, and a reflux box is arranged in front of the culture fluid adding device, and the reflux box is arranged between the two groups of first linear motion platforms; a transfer table is arranged at the front end of the mounting platen, a second positioning seat is fixedly arranged on the transfer table, and the test tube positioning fixture is placed on the second positioning seat; an insulation liquid storage tank is arranged below the base frame, and a matching heating and insulation device is arranged in the insulation liquid storage tank.

[0006] The test tube mounting frame comprises two sets of relatively arranged fixing frames, the fixing frames are cross-shaped brackets, and a plurality of sets of shaft sleeves are arranged on the two sets of fixing frames in pairs; the test tube seat is a long structure, and a plurality of test tube insertion holes are arranged on the upper end surface, and the test tubes are inserted in the test tube insertion holes. The first short axis and the second short axis are arranged on the end surfaces on both sides in the length direction of the test tube seat, and the first short axis and the second short axis are rotatably arranged in the shaft sleeves.

[0007] The first positioning seat includes a positioning table and a pressing assembly. The positioning table is fixedly arranged on the slide of the first linear motion platform. The four corners of the positioning table are provided with first positioning holes. The positioning table is provided with a positioning groove. The two sides of the positioning table are provided with pressing assemblies. The pressing assembly includes a rotating pressing cylinder and a pressing head. The pressing head is arranged on the rotating output shaft of the rotating pressing cylinder.

[0008] A positioning strip is arranged at the bottom of the test tube holder, the positioning strip is matched with the positioning groove, and the positioning strip is inserted into the positioning groove to position the test tube positioning fixture.

[0009] Second positioning pins are arranged at two ends of the bottom of the fixing frame, and the second positioning pins are matched with the first positioning holes arranged at the four corners of the positioning platform.

[0010] The end surface of the first short shaft is also provided with a sliding groove, and an adjusting block component is matched and arranged in the sliding groove.

[0011] The adjusting block assembly includes an end cover, which is fixedly arranged on the first short shaft. Two groups of elastic locating pins are symmetrically arranged on the end cover. A pull rod is arranged on the upper end surface of the elastic locating pin. The pull rod and the slide are arranged in the sliding groove. The lower end surface of the elastic locating pin is a spherical end surface. A spring is sleeved on the elastic locating pin. A plurality of positioning slots are arranged circumferentially on the outer end surface of the sleeve. The positioning slots are matched with the spherical end surface of the lower end surface of the elastic locating pin.

[0012] The culture fluid adding device includes a gantry bracket, a second linear motion platform is horizontally arranged on the crossbeam of the gantry bracket, a third linear motion platform is vertically arranged on the slide of the second linear motion platform, a liquid adding head assembly is arranged on the slide of the third linear motion platform, a control valve is arranged on the gantry bracket frame, a one-way valve is arranged at the input and output ends of the control valve, and an electromagnetic reversing valve group is also arranged on the gantry bracket frame.

[0013] The liquid adding head assembly includes a first mounting plate, a second mounting plate is cantilevered on the first mounting plate, a needle fixing plate is arranged at the end of the second mounting plate, a plurality of liquid adding needle tubes are arranged on the needle fixing plate, and the spacing between the liquid adding needle tubes is matched with the spacing between the test tube seats arranged on the test tube positioning fixture.

[0014] The second positioning seat is provided with second positioning holes at four corners, the second positioning holes are matched with the second positioning pins, and the upper end surface of the second positioning seat is provided with a recessed avoidance groove for avoiding the positioning strip provided at the bottom of the test tube seat.

[0015] Beneficial effects of the utility model:

[0016] The utility model discloses a device for automatically adding culture solution to test tubes. A double-slide operation device is arranged on the bottom frame. A positioning seat is arranged on the double-slide. A test tube positioning fixture is arranged on the positioning seat. The test tube positioning fixture is a movable transfer fixture. Several groups of test tube seats are rotatably arranged on the test tube positioning fixture. Several test tubes are inserted on the test tube seats. The test tubes are arranged in a matrix on the test tube positioning fixture. A culture solution adding device is arranged at the end of the double-slide operation device. The culture solution adding device is arranged as a gantry frame structure. A horizontally movable linear platform and a vertically movable linear platform are arranged on the frame. A liquid adding head assembly is arranged on the platform. The liquid adding head assembly is provided with several liquid adding needles corresponding to the test tubes on the test tube positioning fixture. An empty test tube is placed on the test tube positioning fixture, and the test tube is moved to the culture solution adding device to add culture solution. Multiple test tubes can be added at one time to improve the adding efficiency. After the adding is completed, exit, and the test tube positioning fixture on the other slide moves to the culture solution adding device to add culture solution. The test tube positioning fixture is also equipped with a rotating part, which can rotate at a certain angle. The base frame is also equipped with a transfer table, on which a positioning seat is set. After adding bacteria into the test tube, the test tube positioning fixture is rotated at an angle at the transfer table, which saves transfer time and rotates the test tube at an angle within the effective coagulation time of the culture solution, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following is a preferred embodiment, and is accompanied by the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the utility model. For ordinary technicians in this field, other drawings can be obtained based on the following drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure;

[0019] Figure 2 is a schematic diagram of the structure of the first positioning seat;

[0020] Figure 3 This is a schematic diagram of the test tube positioning fixture structure;

[0021] Figure 4 It is a schematic diagram of the test tube stand structure;

[0022] Figure 5 It is a schematic diagram of the adjustment block assembly and the sleeve structure;

[0023] Figure 6 It is a schematic diagram of the structure of the reflux box;

[0024] Figure 7 It is a schematic diagram of the structure of the liquid adding head assembly;

[0025] Figure 8 is a schematic diagram of the structure of the second positioning seat;

[0026] Fig. 9 Schematic diagram of culture medium control.

[0027] In the figure: 1-base frame, 101-mounting table, 102-transfer table, 2-first linear motion platform, 3-first positioning seat, 301-positioning platform, 3011-first positioning hole, 3012-positioning groove, 302-pressing assembly, 3021-rotating pressure cylinder, 3022-pressing head, 4-test tube, 5-reflux box, 501-box, 5011-dish-shaped reflux chamber, 502-cover plate, 503-reflux pipe, 6-culture solution adding device, 601-gantry bracket, 602-second linear motion platform, 603-third linear motion platform, 604-adding head assembly, 6041-first mounting plate, 6042-second mounting plate, 6043-needle fixing Plate, 6044-liquid adding needle, 605-control valve group, 6051-check valve, 606-electromagnetic reversing valve group, 7-second positioning seat, 701-second positioning hole, 701-avoidance groove, 8-insulation liquid storage tank, 9-test tube positioning fixture, 901-test tube seat, 9011-test tube insertion hole, 9012-first short axis, 90121-sliding groove, 9013-second short axis, 9014-positioning strip, 902-fixed frame, 903-second positioning pin, 904-lifting rod, 905-shaft sleeve, 9051-positioning slot, 906-adjusting block assembly, 9061-end cover, 9062-elastic positioning pin, 9063-pull rod, 9064-spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0030] like Figure 1 , Figure 2As shown, the test tube automatic culture fluid loading device includes a base frame 1, on which a mounting plate 101 is provided, and the mounting plate 101 is provided with a double slide device, which includes a first linear motion platform 2, a first positioning seat 3, and a test tube positioning fixture 9; the first linear motion platform 2 is arranged along both sides of the center line of the mounting plate 101, and the first positioning seat 3 is arranged on the slide of the first linear motion platform 2, and the first positioning seat 3 is provided with a test tube positioning fixture 9 for positioning and placing the test tube 4; the rear end of the mounting plate 101 is provided with a culture fluid loading device 6 for adding culture fluid to the test tube 4 on the test tube positioning fixture 9, and the culture fluid loading device 6 is arranged in the middle position between the two groups of first linear motion platforms 2. A transfer table 102 is provided at the front end of the mounting plate 101, and a second positioning seat 7 is fixedly provided on the transfer table 102 for transferring and placing the test tube positioning fixture 9 loaded with culture fluid transferred from the first linear motion platform 2. A reflux box 5 is provided in front of the culture solution adding device 6, and the reflux box 5 is fixedly provided on the mounting plate 101 and is located between the two sets of first linear motion platforms 2. An insulation liquid storage tank 8 is provided below the base frame 1, and a matching heating and insulation device and a pump assembly are provided in the insulation liquid storage tank 8 for heat preservation, transportation, and storage of the culture solution.

[0031] like Figure 2 As shown, the first positioning seat 3 includes a positioning platform 301 and a pressing assembly 302. The positioning platform 301 is fixedly arranged on the slide of the first linear motion platform 2. The first positioning holes 3011 are arranged at the four corners of the positioning platform 301. The positioning platform 301 is provided with a plurality of longitudinally penetrating positioning grooves 3012. A step platform is arranged on both sides of the positioning platform 301. The step platform is lower than the top plane of the positioning platform 301. The pressing assembly 302 is arranged on the step platform. The pressing assembly 302 includes a rotating pressure cylinder 3021 and a pressure head 3022. The rotating pressure cylinder 3021 is fixedly arranged on the step platform. The rotating output shaft end of the rotating pressure cylinder 3021 is provided with a pressure head 3022. The first positioning hole 3011 and the positioning groove 3012 are used to position the test tube positioning fixture 9. The pressing assembly 302 is used to position the test tube positioning fixture 9 in the vertical direction.

[0032] like Figure 3As shown, the test tube positioning fixture 9 includes a test tube mounting frame, which includes two sets of relatively arranged fixing frames 902, the fixing frames 902 are "X"-shaped brackets, and the two sets of fixing frames 902 are matched and correspondingly provided with a plurality of sets of shaft sleeves 905, and the shaft sleeves 905 provided on the two sets of fixing frames 902 are arranged in pairs, and the shaft sleeves 905 are inserted into the shaft sleeves 905 to be rotatably arranged. The spacing between the test tube seats 901 is set correspondingly to the spacing between the positioning grooves 3012 provided on the positioning platform 301. The two side ends of the fixing frame 902 are fixedly connected with lifting rods 904 for extracting and transferring the test tube positioning fixture 9. The two ends of the bottom of the fixing frame 902 are provided with second positioning pins 903, and the second positioning pins 903 are matched with the first positioning holes 3011 provided at the four corners of the positioning platform 301.

[0033] like Figure 4 As shown, the test tube holder 901 is a long strip structure, and a plurality of test tube insertion holes 9011 are provided on the upper end surface for inserting the test tube 4; a first short axis 9012 and a second short axis 9013 are provided on both sides of the length direction of the test tube holder 901, and a sliding groove 90121 is provided on the end surface of the first short axis 9012; a positioning bar 9014 is provided at the bottom of the test tube holder 901. Figure 3 As shown, the first short shaft 9012 and the second short shaft 9013 are inserted into the corresponding sleeves 905 provided on the fixing frame 902. The positioning bar 9014 is matched with the positioning groove 3012 and inserted into the positioning groove 3012. The sliding groove 90121 provided at the end of the first short shaft 9012 is matched with the adjustment block assembly 906.

[0034] like Figure 5 As shown, the adjustment block assembly 906 includes an end cover 9061, which is sleeved on the first short shaft 9012. Two groups of elastic positioning pins 9062 are penetrated on the end cover 9061. The two groups of elastic positioning pins 9062 are on a diameter line. The upper end surfaces of the two groups of elastic positioning pins 9062 are provided with pull rods 9063, and the pull rods 9063 are slidably arranged in the sliding groove 90121. The lower end surface of the elastic positioning pin 9062 is a spherical end surface. The spring 9064 is sleeved on the elastic positioning pin 9062 and is arranged between the lower end surface of the end cover 9061 and the spherical end surface of the elastic positioning pin 9062. A plurality of positioning slots 9051 are arranged circumferentially on the outer end surface of the shaft sleeve 905. The positioning slots 9051 are matched with the spherical end surface of the lower end surface of the elastic positioning pin 9062 to position the elastic positioning pin 9062. When in use, lift the pull rod 9063 and the elastic positioning pin 9062, lift the spherical end surface at its end from the positioning slot 9051, compress the spring 9064, rotate the test tube holder 901 into place, release the pull rod 9063, and under the elastic force of the spring 9064, the spherical end surface at the end of the elastic positioning pin 9062 enters the positioning slot 9051 to position the test tube holder 901.

[0035] In this embodiment, six groups of test tube holders 901 are provided, and each group of test tube holders 901 is provided with seven groups of test tubes 4. The number of test tube holders 901 and the test tubes 4 provided on the test tube holders 901 can be set according to actual needs.

[0036] like Figure 6 As shown, the reflux box 5 includes a box body 501, a cover plate 502, and a reflux pipe 503. The cover plate 502 is arranged on the top of the box body 501, and the reflux pipe 503 is arranged on the bottom. A dish-shaped reflux chamber 5011 is arranged in the box body 501, and the lower end of the dish-shaped reflux chamber 5011 is connected to the reflux pipe 503. The cover plate 502 is provided with a reflux port for the culture solution to enter the box body 501.

[0037] like Figure 1 As shown, the culture fluid adding device 6 includes a gantry support 601, a second linear motion platform 602 is horizontally arranged on the crossbeam of the gantry support 601, a third linear motion platform 603 is vertically arranged on the slide seat of the second linear motion platform 602, and a liquid adding head assembly 604 is arranged on the slide seat of the third linear motion platform 603 for adding culture fluid to the test tube 4. Figure 7 As shown, the liquid adding head assembly 604 includes a first mounting plate 6041, and the first mounting plate 6041 is arranged on the slide seat of the third linear motion platform 603. The first mounting plate 6041 is cantilevered to set a second mounting plate 6042. A needle fixing plate 6043 is arranged at the end of the second mounting plate 6042. A plurality of liquid adding syringes 6044 are arranged on the needle fixing plate 6043. The spacing between the liquid adding syringes 6044 is matched with the spacing between the test tube seats 901 arranged on the test tube positioning fixture 9.

[0038] In this embodiment, three groups of liquid adding needles 6044 are provided, and the three groups of liquid adding needles 6044 can simultaneously and synchronously add culture solution to the test tube 4. In other implementation scenarios, the number and arrangement of liquid adding needles 6044 can be effectively arranged to match the test tube positioning fixture 9 according to the chemical properties of the culture solution and the required station beat.

[0039] The gantry support 601 is also provided with a control valve 605, and the input and output ends of the control valve 605 are each provided with a set of one-way valves 6051 to prevent the culture solution from flowing back. The gantry support 601 is also provided with an electromagnetic reversing valve group 606 to control the start or stop of the culture solution in the liquid adding head assembly 604.

[0040] The culture solution control and delivery of this embodiment are as follows Fig. 9As shown, the culture solution is kept at a constant temperature in the heat preservation liquid storage tank 8, the pump assembly pumps the culture solution into the pipeline, and the culture solution enters the control valve group 605 along the pipeline. According to the flow rate of the culture solution, the reversing of the electromagnetic reversing valve group 606 controls the amount of culture solution added to the test tube 4 by the liquid adding needle tube 6044. After the filling is completed, the remaining part of the culture solution in the liquid adding needle tube 6044 is moved to the reflux box 5, and refluxed to the heat preservation liquid storage tank 8 through the reflux box 5.

[0041] like Figure 8 As shown, the second positioning seat 7 is fixedly arranged on the transfer table 102 of the base frame 1, and four second positioning holes 701 are arranged at the four corners of the second positioning seat 7, and the second positioning holes 701 are arranged to match the second positioning pins 903. A recessed avoidance groove 702 is arranged on the upper end surface of the second positioning seat 7, which is used to avoid the characteristic parts at the bottom of the test tube seat 901.

[0042] When the device uses the test tube positioning fixture 9 to add culture fluid, firstly, the empty test tube 4 is inserted into the test tube seat 901 provided in the test tube positioning fixture 9, and the adjustment block assembly 906 is pulled to make the initial position of the test tube 4 vertical. The test tube positioning fixture 9 is placed on the first positioning seat 3 of one group of slides of the double slide device, the pressing assembly 302 rotates and presses the test tube positioning fixture 9, the first linear motion platform 2 moves the test tube positioning fixture 9 to the culture fluid adding device 6, the second linear motion platform 602 and the third linear motion platform 603 cooperate with each other to operate, so that the liquid adding head assembly 604 runs to the top of the test tube 4 inserted on the test tube positioning fixture 9, and the liquid adding needle tube 6044 arranged on the liquid adding head assembly 604 corresponds to the orifice position of the test tube 4 one by one. At this time, the pump assembly arranged in the heat-insulating liquid storage tank 8 works to pump the culture fluid into the pipeline, and the culture fluid enters the control valve group 605 along the pipeline. According to the flow rate of the culture fluid, the amount of culture fluid added to the test tube 4 by the liquid adding needle tube 6044 is controlled by the reversing of the electromagnetic reversing valve group 606. The liquid adding needle 6044 injects a certain amount of culture solution into all the test tubes 4 set on the test tube positioning fixture 9 according to a certain travel distance. After the culture solution is added, the liquid adding head assembly 604 cooperates with the second linear motion platform 602 and the third linear motion platform 603 to run to the reflux box 5, and the excess culture solution in the liquid adding needle 6044 flows back to the thermal insulation storage tank 8 through the reflux box 5. The test tube positioning fixture 9 on this slide is output to the outlet, and the test tube positioning fixture 9 is removed and placed on the second positioning seat 7. The test tube positioning fixture 9 on the other slide runs to the culture solution adding device 6 for liquid adding operation. The staff adds bacteria to the test tube 4 on the test tube positioning fixture 9 placed on the second positioning seat 7, and then pulls the adjustment block assembly 906 and rotates the test tube seat 901 to rotate the test tube 4 to the required angle, increase the contact surface of the bacteria, and make the bacteria grow effectively. The double slide setting of this device is circulated in this way to perform the culture solution filling operation and improve the filling efficiency.

Claims

1. A device for automatically adding culture fluid to a test tube, comprising a base frame (1), a mounting plate (101) being arranged on the base frame (1), a double slide device being arranged in the middle of the mounting plate (101), and characterized in that: The double slide device comprises a first linear motion platform (2), a first positioning seat (3), and a test tube positioning fixture (9); the first linear motion platform (2) is arranged along two sides of the center line of the mounting plate (101); the first positioning seat (3) is arranged on the slide of the first linear motion platform (2); the first positioning seat (3) is provided with a test tube positioning fixture (9); the test tube positioning fixture (9) comprises a test tube mounting frame, and the test tube frame is provided with a test tube seat (901) that can be rotated and tilted at a certain angle; A culture fluid adding device (6) is arranged at the rear end of the mounting plate (101), and the culture fluid adding device (6) is arranged at the middle position between the two groups of first linear motion platforms (2). A reflux box (5) is arranged in front of the culture fluid adding device (6), and the reflux box (5) is arranged between the two groups of first linear motion platforms (2); A transfer table (102) is provided at the front end of the mounting table (101), a second positioning seat (7) is fixedly provided on the transfer table (102), and a test tube positioning fixture (9) is placed on the second positioning seat (7); A heat-insulating liquid storage tank (8) is arranged below the base frame (1), and a matching heating and heat-insulating device is arranged inside the heat-insulating liquid storage tank (8).

2. The device for automatically adding culture solution to a test tube according to claim 1, characterized in that: The test tube mounting frame comprises two sets of fixed frames (902) arranged opposite to each other, the fixed frames (902) are "X"-shaped frames, and a plurality of sets of shaft sleeves (905) are arranged on the two sets of fixed frames (902) in a matching manner in pairs; the test tube holder (901) is a long structure, and a plurality of test tube insertion holes (9011) are arranged on the upper end surface, and test tubes (4) are inserted into the test tube insertion holes (9011); a first short axis (9012) and a second short axis (9013) are arranged on the end surfaces on both sides in the length direction of the test tube holder (901), and the first short axis (9012) and the second short axis (9013) are rotatably arranged in the shaft sleeves (905).

3. The device for automatically adding culture solution to a test tube according to claim 2, characterized in that: The first positioning seat (3) comprises a positioning platform (301) and a material pressing assembly (302); the positioning platform (301) is fixedly arranged on a slide table of the first linear motion platform (2); the positioning platform (301) is provided with first positioning holes (3011) at four corners; the positioning platform (301) is provided with a positioning groove (3012); the material pressing assembly (302) is arranged on both sides of the positioning platform (301); the material pressing assembly (302) comprises a rotary pressing cylinder (3021) and a pressing head (3022); the pressing head (3022) is arranged on a rotating output shaft of the rotary pressing cylinder (3021).

4. The device for automatically adding culture solution to a test tube according to claim 3, characterized in that: A positioning bar (9014) is provided at the bottom of the test tube holder (901), the positioning bar (9014) is matched with the positioning groove (3012), and the positioning bar (9014) is inserted into the positioning groove (3012) to position the test tube positioning fixture (9).

5. The device for automatically adding culture solution to a test tube according to claim 3, characterized in that: Second positioning pins (903) are arranged at two ends of the bottom of the fixing frame (902), and the second positioning pins (903) are matched with first positioning holes (3011) arranged at the four corners of the positioning platform (301).

6. The device for automatically adding culture solution to a test tube according to claim 2, characterized in that: The end surface of the first short shaft (9012) is also provided with a sliding groove (90121), and an adjustment block assembly (906) is matched and arranged in the sliding groove (90121).

7. The device for automatically adding culture solution to a test tube according to claim 6, characterized in that: The adjustment block assembly (906) includes an end cover (9061), which is fixedly arranged on the first short shaft (9012). Two groups of elastic positioning pins (9062) are symmetrically arranged on the end cover (9061). The upper end surface of the elastic positioning pin (9062) is provided with a pull rod (9063), and the pull rod (9063) is slidingly arranged in a sliding groove (90121). The lower end surface of the elastic positioning pin (9062) is a spherical end surface, and a spring (9064) is sleeved on the elastic positioning pin (9062). The outer end surface of the shaft sleeve (905) is circumferentially provided with a plurality of positioning slot holes (9051), and the positioning slot holes (9051) are matched with the spherical end surface of the lower end surface of the elastic positioning pin (9062).

8. The device for automatically adding culture solution to a test tube according to claim 1, characterized in that: The culture fluid adding device (6) comprises a gantry support (601), a second linear motion platform (602) is horizontally arranged on the crossbeam of the gantry support (601), a third linear motion platform (603) is vertically arranged on the slide seat of the second linear motion platform (602), a liquid adding head assembly (604) is arranged on the slide seat of the third linear motion platform (603), a control valve (605) is arranged on the frame of the gantry support (601), a one-way valve (6051) is arranged at the input and output ends of the control valve (605), and an electromagnetic reversing valve group (606) is also arranged on the frame of the gantry support (601).

9. The device for automatically adding culture solution to a test tube according to claim 8, characterized in that: The liquid adding head assembly (604) comprises a first mounting plate (6041), a second mounting plate (6042) being cantilevered from the first mounting plate (6041), a needle fixing plate (6043) being disposed at the end of the second mounting plate (6042), a plurality of liquid adding needle tubes (6044) being disposed on the needle fixing plate (6043), and the spacing between the liquid adding needle tubes (6044) being arranged to match the spacing between the test tube seats (901) disposed on the test tube positioning fixture (9).

10. The device for automatically adding culture solution to a test tube according to claim 4, characterized in that: The second positioning seat (7) is provided with second positioning holes (701) at four corners, the second positioning holes (701) are matched with the second positioning pins (903), and the upper end surface of the second positioning seat (7) is provided with a recessed avoidance groove (702) for avoiding the positioning strip (9014) provided at the bottom of the test tube seat (901).

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