CN218705161U

CN218705161U - Culture dish placer is used in laboratory

Info

Publication number: CN218705161U
Application number: CN202222118252.7U
Authority: CN
Inventors: 王迎迎; 宫月华
Original assignee: First Hospital of China Medical University
Current assignee: First Hospital of China Medical University
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-03-24
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to a culture dish technical field, and a culture dish placer is used in laboratory, including equipment principal, equipment principal is cylindricly, the inside ten groups placing chamber that is the equidistant distribution of vertical direction that is provided with of equipment principal, ten groups of placing chamber cavity lateral wall front side positions on the equipment principal have seted up ten groups and have placed the through-hole, ten groups of placing through-hole positions are provided with ten groups protector in the equipment principal, through setting up buckle device, when using this equipment, press the depression bar through external force, L type slide bar horizontal end drives the locating piece and moves upward and remove the grafting state to the constant head tank, open the guard gate through the handle, with the culture dish through placing on the standing groove of tray, keep in shifting the placing chamber on the equipment principal through the tray with the culture dish, the rethread handle preserves in shifting the appointed refrigerator with equipment principal, realize the convenient access function to the culture dish through above operation promptly.

Description

Culture dish placer is used in laboratory

Technical Field

The utility model relates to a culture dish technical field especially relates to a culture dish placer is used in laboratory.

Background

The culture dish is a laboratory ware that is used for microorganism or cell culture, comprises a discoid end of plane and a lid, makes the ware that can select for use different diameters according to the experimental demand with glass or plastics generally, and the use of laboratory culture dish generally includes three scenes: firstly, preparing a solid culture medium in a clean culture dish in advance, and storing the culture medium in a four-degree refrigerator for later use; secondly, storing the used solid culture dish coated with bacteria in a four-degree refrigerator; and thirdly, directly placing a culture dish containing culture solution and cells or a pre-prepared solid culture dish coated with a bacteria coated sample into an incubator, wherein under the first and second conditions, a stainless steel storage tank sold on the market at present is inconvenient to take although being capable of being sterilized under high pressure, and easily causes separation of a bottom and a cover in the taking process, thereby causing pollution, and under the third condition, no solution is available at present.

The existing device patents (patent numbers: CN216396417U and CN 114560303A) related to the culture medium which are convenient to store and place are all open racks, the function of a storage device cannot be realized, and when a culture experiment is carried out, a plurality of culture dishes are required to be placed at one time, and can be stacked together, and in the using process, the surfaces of the culture dishes are smooth, so that the culture dishes are easy to fall off in the stacking process; and in the process of cultivateing, if want to take out certain culture dish alone, often need will stack other culture dishes on it and move away, especially when the culture dish that is equipped with different culture mediums is put together, cause other culture dishes landing very easily, lead to uncapping or breakage, cause the pollution, influence experimental effect, current rack all is open shelf, easily cause the pollution when putting the refrigerator and storing, and also be difficult to mark, can't realize the autoclaving operation, consequently need design a closed container means that can high pressure of access of being convenient for and solve this problem.

To this end, we propose a culture dish placement device for the laboratory.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a culture dish placer is used in laboratory.

In order to realize the above-mentioned purpose, the utility model discloses a following technical scheme, a culture dish placer is used in laboratory, including the equipment main part, the equipment main part is cylindricly, equipment main part top side wall central point puts fixedly connected with carrying handle, the inside ten groups of placing chambers that are equidistant distribution of vertical direction that is provided with of equipment main part, ten groups of placing through-holes have been seted up to ten groups of placing chamber lateral wall front side positions in the equipment main part, ten groups of placing through-hole positions in the equipment main part are provided with ten groups of protector, protector includes the guard gate, two sets of door-hinge support, two sets of first bases, two sets of second bases and two sets of pull rods, ten groups of protector left side positions are equipped with ten groups of buckle device, buckle device includes the buckle shell, L type slide bar, telescopic link and depression bar, the tray has all been placed in the ten groups of placing chamber inner chambers in the equipment main part, side wall central point fixedly connected with handle before the tray, the standing groove has been seted up to tray top side wall, the culture dish has been placed on the standing groove, the culture dish has been made by the stainless steel that can high pressure sterilization material repeatedly uses.

Preferably, the protective door is vertically and hermetically connected to the inner wall surface of ten groups of placement through holes in the equipment main body in a sealing manner, a handle is fixedly connected to the central position of the front side wall surface of the protective door, two groups of rotating lugs are symmetrically and fixedly connected to the right side edge position of the front side wall surface of the protective door, four groups of rotating ends are symmetrically arranged on the upper and lower groups of rotating lugs in a vertical manner, a clamping block is fixedly connected to the left side edge position of the front side wall surface of the protective door, a positioning groove is formed in the left side position of the top side wall surface of the clamping block, and two groups of door shaft supports are fixedly connected to the outer side wall surface of the equipment main body and correspond to the two groups of rotating lugs in position.

Preferably, two sets of have been seted up on the lateral wall face before the door-hinge support, two sets of first bases are the horizontality respectively with two sets of mounting groove inner chamber bottom side wall face fixed connection, two sets of first base top side wall central point puts and has seted up two sets of rotation grooves, two sets of pull rods are the vertical state and run through two sets of mounting groove inner chamber top side wall faces, two sets of second bases are the horizontality respectively with two sets of pull rod lower extreme fixed connection, two sets of second base bottom side wall central point puts and has seted up two sets of swivelling chutes and correspond with two sets of first base top side wall on two sets of rotation groove positions.

Preferably, two sets of limiting springs are sleeved on the outer wall surface of the bottom end of the pull rod, two ends of each limiting spring are fixedly connected with the top side wall surfaces of the inner cavities of the two sets of mounting grooves and the top side wall surfaces of the two sets of second bases respectively, rotating ends on the side wall surfaces of the rotary lug bottoms are inserted into two sets of rotary grooves on the two sets of first bases respectively, and the two sets of second bases are slidably sleeved on the outer wall surfaces of the rotating ends on the top side wall surfaces of the rotary lug bottoms through two sets of rotary grooves under the elastic force action of the two sets of limiting springs.

Preferably, the buckle shell is fixedly connected with the outer side wall face of the equipment body and corresponds to the position of the buckle block, the right front corner position of the outer side wall face of the buckle shell is provided with a buckle groove, the left end of the buckle block is placed in the inner cavity of the buckle groove, the left upper corner position inside the buckle shell is provided with an L-shaped sliding groove, a vertical cavity of the L-shaped sliding groove is in a vertical downward state, a horizontal cavity of the L-shaped sliding groove is in a horizontal rightward state, the vertical end of the L-shaped sliding rod is slidably inserted into the vertical cavity of the L-shaped sliding groove, and the horizontal end of the L-shaped sliding rod is in a horizontal rightward state and is placed in the horizontal inner cavity of the L-shaped sliding groove.

Preferably, the rightmost end fixedly connected with of L type slide bar horizontal end is the locating piece of vertical state, and the locating piece bottom is provided with the slope wall that is forward lower direction state, and the telescopic link is vertical state and L type slide bar horizontal end top side wall left side position fixed connection, has cup jointed spring and spring both ends respectively with telescopic link both ends fixed connection on the telescopic link outer wall, and the locating piece bottom runs through L type spout inner chamber wall and corresponds the position and peg graft under the spring action of spring on the telescopic link in the constant head tank inner chamber.

Preferably, a movable groove is formed in the bottom of the inner wall surface of the vertical cavity of the L-shaped sliding groove, an inclined wall surface facing forward and downward is arranged at the lowest end of the vertical end of the L-shaped sliding rod, the pressing rod penetrates through the front wall surface of the inner cavity of the movable groove in a horizontal state, a pressing block is fixedly connected to the rear end of the pressing rod, the rear side wall surface of the pressing block faces backward and upward, and the rear side wall surface of the pressing block is in friction contact with the inclined wall surface at the lowest end of the vertical end of the L-shaped sliding rod.

Advantageous effects

The utility model provides a culture dish placer is used in laboratory. The method has the following beneficial effects:

(1) The device comprises a clamping device, when the device is used, a pressing rod is pressed through external force, the pressing rod drives a pressing block to press against the inclined wall surface on the lowest end of the vertical end of an L-shaped sliding rod, the L-shaped sliding rod is forced to move upwards through the compression telescopic rod, the horizontal end of the L-shaped sliding rod drives a positioning block to move upwards to relieve the plugging state of the positioning groove, a protective door is opened through a handle, the culture dish is placed on a placing groove of a tray, the culture dish is transferred to a placing chamber on a device main body through the tray to be stored, the protective door is closed through the handle, the protective door drives the clamping block to press against the inclined wall surface on the bottom end of the positioning block in the closing process of the protective door, the positioning block is forced to move upwards to the inner cavity of the L-shaped sliding groove through the compression telescopic rod of the L-shaped sliding rod, when the constant head tank corresponds with the locating piece position, drive the locating piece through L type slide bar down and move down the grafting on the constant head tank on the telescopic link under the spring force effect, carry out fixed operation to the guard gate, the rethread carries the handle and transfers equipment principal to and preserves in the appointed refrigerator, through reverse operation, can take out the culture dish from the placing chamber to in the equipment principal through the tray, realize the convenient access function to the culture dish promptly through above operation, easy operation is convenient, the popularization of this equipment of being convenient for, simultaneously ten groups in the equipment principal place indoor all only preserve a culture dish, and the easy mark of equipment principal outer wall, the problem of depositing a plurality of culture dishes simultaneously and confusing easily has been solved.

(2) This kind of culture dish placer is used in laboratory, through setting up protector, when the guard gate is in the open mode, use external force pulling pull rod, the pull rod drives two sets of second bases through two sets of spacing springs of compression and shifts up and remove the rotation end to on two sets of rotation ear top side walls and cup joint the state, can dismantle the guard gate from two sets of door-hinge supports this moment, can become the placer of culture dish, when installing the guard gate back in the equipment main part, can become the save set of culture dish, realize the function diversity of this equipment, further strengthen the popularization of this equipment.

(3) This kind of culture dish placer is used in laboratory through setting up the tray, makes things convenient for the transfer and the access operation of culture dish through the tray, and places the culture dish when shifting on the standing groove of tray, avoids the culture dish landing from the tray to cause the pollution to the environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a perspective view of a culture dish placing device for a laboratory according to the present invention;

FIG. 2 is a perspective view of the protection device of the present invention;

FIG. 3 is a perspective view of the protective door of the present invention;

FIG. 4 is a perspective view of the door hinge bracket of the present invention;

fig. 5 is a perspective view of the fastening device of the present invention;

fig. 6 is a perspective view of the tray of the present invention.

Illustration of the drawings: 10. an apparatus main body; 11. lifting a handle; 12. a protective door; 13. a handle; 14. rotating the lug; 15. a rotating end; 16. a buckling block; 17. positioning a groove; 18. a door shaft bracket; 19. a first base; 20. a second base; 21. a pull rod; 22. a limiting spring; 23. a buckle housing; 24. a fastening groove; 25. an L-shaped chute; 26. a movable groove; 27. an L-shaped sliding rod; 28. positioning blocks; 29. a telescopic rod; 30. A pressure lever; 31. pressing into blocks; 32. a tray; 33. and (4) mounting the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

A culture dish placing device for a laboratory is disclosed, as shown in figures 1-6, comprising a device main body 10, the device main body 10 is cylindrical, a lifting handle 11 is fixedly connected to the central position of the top side wall surface of the device main body 10, ten sets of placing chambers are arranged in the device main body 10 and are distributed at equal intervals in the vertical direction, ten sets of placing through holes are arranged at the front side of the side wall surface of the cavity of the ten sets of placing chambers on the device main body 10, ten sets of protecting devices are arranged at the positions of the placing through holes on the device main body 10, each protecting device comprises a protecting door 12, two sets of door shaft supports 18, two sets of first bases 19, two sets of second bases 20 and two sets of pull rods 21, the protecting door 12 is vertically and hermetically clamped on the inner wall surfaces of the ten sets of placing through holes on the device main body 10, a handle 13 is fixedly connected to the central position of the front side wall surface of the protecting door 12, and two sets of rotating lugs 14 are symmetrically and fixedly connected to the edge position of the right side surface of the front side of the protecting door 12, two sets of wall right side position symmetries about 14 are provided with four groups and rotate end 15 about two sets of ears that rotate, lateral surface left side border position fixedly connected with buckle piece 16 before guard gate 12, buckle piece 16 top lateral wall left side position has seted up constant head tank 17, two sets of door-hinge support 18 correspond with equipment main part 10 outside wall fixed connection and with two sets of ears that rotate 14 positions, two sets of mounting grooves 33 have been seted up on the lateral surface before two sets of door-hinge support 18, two sets of first bases 19 are the horizontality respectively with two sets of mounting grooves 33 inner chamber bottom wall fixed connection, two sets of first bases 19 top lateral wall central point puts and has seted up two sets of rotating grooves, two sets of pull rods 21 are the vertical state and run through two sets of mounting grooves 33 inner chamber top lateral walls, two sets of second bases 20 are the horizontality respectively with two sets of pull rods 21 lower extreme fixed connection, two sets of second bases 20 bottom lateral wall central point put set up two sets of rotating grooves and with two sets of first bases 19 top lateral wall central point put and have seted up two sets of rotating grooves The upper two groups of rotating grooves correspond in position, two groups of limiting springs 22 are sleeved on the outer wall surface of the bottom end of the two groups of pull rods 21, two ends of the two groups of limiting springs 22 are respectively and fixedly connected with the top side wall surface of the inner cavity of the two groups of mounting grooves 33 and the top side wall surface of the two groups of second bases 20, the rotating ends 15 on the bottom side wall surfaces of the two groups of rotating lugs 14 are respectively inserted on the two groups of rotating grooves on the two groups of first bases 19, the two groups of second bases 20 are respectively and slidably sleeved on the outer wall surface of the rotating ends 15 on the top side wall surfaces of the two groups of rotating lugs 14 through the two groups of rotating grooves under the elastic force action of the two groups of limiting springs 22, ten groups of buckling devices are arranged at the left side position of the ten groups of protection devices, each buckling device comprises a buckling shell 23, an L-shaped sliding rod 27, a telescopic rod 29 and a pressing rod 30, the buckling shell 23 is fixedly connected with the outer side wall surface of the equipment main body 10 and corresponds to the position of the buckling block 16, a buckling groove 24 is arranged at the right front angle position of the outer side wall surface of the buckling shell 23, the left end of the buckle block 16 is placed in the inner cavity of the buckle groove 24, the L-shaped sliding groove 25 is formed in the position of the upper left corner inside the buckle shell 23, the vertical cavity of the L-shaped sliding groove 25 is in a vertically downward state, the horizontal cavity of the L-shaped sliding groove 25 is in a horizontally rightward state, the vertical end of the L-shaped sliding rod 27 is inserted into the vertical cavity of the L-shaped sliding groove 25 in a sliding mode, the horizontal end of the L-shaped sliding rod 27 is in a horizontally rightward state and is placed in the horizontal inner cavity of the L-shaped sliding groove 25, the rightmost end of the horizontal end of the L-shaped sliding rod 27 is fixedly connected with the positioning block 28 in a vertical state, the bottom end of the positioning block 28 is provided with an inclined wall surface in a forward downward state, the telescopic rod 29 is in a vertical state and is fixedly connected with the left side position of the top side wall surface of the horizontal end of the L-shaped sliding rod 27, the outer wall surface of the telescopic rod 29 is sleeved with a spring, two ends of the spring are respectively and fixedly connected with two ends of the telescopic rod 29, the bottom end of the positioning block 28 penetrates through the corresponding positions of the inner cavity of the L-shaped sliding groove 25 and is inserted under the elastic force of the spring on the telescopic rod 29 Connect in the constant head tank 17 inner chamber, movable slot 26 has been seted up to the perpendicular intracavity lateral wall face bottom of L type spout 25, L type slide bar 27 vertical end bottommost is provided with the slope wall face that is forward lower direction state, depression bar 30 is horizontal state and runs through movable slot 26 inner chamber front side wall face, the rear end fixedly connected with briquetting 31 of depression bar 30, briquetting 31 rear side wall face is the upper direction state backward, frictional contact between the slope wall face of briquetting 31 rear side wall face and the perpendicular end bottommost of L type slide bar 27, tray 32 has all been placed in ten groups of placing chamber inner chambers on equipment main part 10, tray 32 front side wall face central point puts fixedly connected with handle, the standing groove has been seted up to tray 32 top side wall face, the culture dish has been placed on the standing groove on tray 32, equipment main part 10 and guard gate 12 are made by the medical stainless steel that can autoclave recycles, can autoclave recycles medical stainless steel is prior art, no longer repeated.

The utility model discloses laboratory is with culture dish placer's theory of operation: by arranging the buckling device, when the device is used, the pressing rod 30 is pressed by external force, the pressing rod 30 drives the pressing block 31 to press against the inclined wall surface on the lowest end of the vertical end of the L-shaped sliding rod 27, the L-shaped sliding rod 27 is forced to compress the telescopic rod 29 to move upwards, the horizontal end of the L-shaped sliding rod 27 drives the positioning block 28 to move upwards to release the plugging state of the positioning groove 17, the protective door 12 is opened by the handle 13, a culture dish is placed on the placing groove of the tray 32, the culture dish is transferred to the placing chamber on the device main body 10 to be stored by the tray 32, the protective door 12 is closed by the handle 13, the protective door 12 drives the buckling block 16 to press against the inclined wall surface on the bottom end of the positioning block 28 in the closing process of the protective door 12, the positioning block 28 is forced to move upwards to the inner cavity of the L-shaped sliding groove 25 by the L-shaped sliding rod 27 compressing the telescopic rod 29, when positioning groove 17 corresponds with positioning block 28 position, spring force effect goes up on telescopic link 29 and drives positioning block 28 down through L type slide bar 27 and move down the grafting on positioning groove 17, carry out fixed operation to guard gate 12, the rethread handle 11 is preserved in transferring equipment main part 10 to appointed refrigerator, through reverse operation, can take out the culture dish from the placing chamber to equipment main part 10 on through tray 32, realize the convenient access function to the culture dish through above operation promptly, easy operation is convenient, be convenient for the popularization of this equipment, simultaneously all only preserve a culture dish in the ten groups placing chamber on equipment main part 10, and equipment main part 10 outer wall face easy mark, the problem of depositing a plurality of culture dishes simultaneously and confusing easily has been solved.

Through setting up protector, when guard gate 12 is in the open mode, use external force pulling pull rod 21, pull rod 21 drives two sets of second bases 20 through two sets of spacing springs of compression and moves upward and removes the rotation end 15 to two sets of rotation ears 14 top side wall and cup joints the state, can dismantle guard gate 12 from two sets of door shaft bracket 18 this moment, can become the placer of culture dish, when installing guard gate 12 back to equipment principal 10 on, can become the save set of culture dish, realize the function diversity of this equipment, further strengthen the popularization of this equipment.

Through setting up tray 32, make things convenient for the transfer and the access operation of culture dish through tray 32, and place the culture dish when shifting on the standing groove of tray 32, avoid the culture dish to lead to the fact the pollution to the environment from tray 32 landing.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A culture dish placer is used in laboratory, includes equipment main part (10), its characterized in that: the equipment body (10) is cylindrical, the central position of the top side wall surface of the equipment body (10) is fixedly connected with a lifting handle (11), ten groups of placing chambers which are distributed at equal intervals in the vertical direction are arranged inside the equipment body (10), ten groups of placing through holes are formed in the front side positions of the side wall surfaces of the cavities of the ten groups of placing chambers on the equipment body (10), ten groups of protecting devices are arranged at the positions of the ten groups of placing through holes on the equipment body (10), each protecting device comprises a protecting door (12), two groups of door shaft supports (18), two groups of first bases (19), two groups of second bases (20) and two groups of pull rods (21), ten groups of buckling devices are arranged at the left side positions of the ten groups of protecting devices, each buckling device comprises a buckling shell (23), an L-shaped slide rod (27), a telescopic rod (29) and a press rod (30), trays (32) are arranged in the cavities of the ten groups of placing chambers on the equipment body (10), handles are fixedly connected to the central position of the front side wall surfaces of the trays (32), a placing groove is formed by medical steel for repeated use, and the protecting door (12) and the medical stainless steel can be repeatedly used.

2. A laboratory culture dish placement device according to claim 1, wherein: the protective door (12) is in a vertical state and is hermetically clamped on ten groups of inner wall surfaces of the placing through holes in the equipment main body (10), a handle (13) is fixedly connected to the central position of the front side wall surface of the protective door (12), two groups of rotating lugs (14) are symmetrically and fixedly connected to the right side edge position of the front side wall surface of the protective door (12), four groups of rotating ends (15) are symmetrically arranged on the upper and lower groups of right side positions of the two groups of rotating lugs (14), a clamping block (16) is fixedly connected to the left side edge position of the front side wall surface of the protective door (12), a positioning groove (17) is formed in the left side position of the top side wall surface of the clamping block (16), and two groups of door shaft supports (18) are fixedly connected to the outer side wall surface of the equipment main body (10) and correspond to the positions of the two groups of rotating lugs (14).

3. A laboratory culture dish placement device according to claim 2, wherein: two sets of mounting groove (33) have been seted up on the lateral wall face before door-hinge support (18), two sets of first base (19) are the horizontality respectively with two sets of mounting groove (33) inner chamber end lateral wall fixed connection, two sets of first base (19) top lateral wall central point puts and has seted up two sets of rotating groove, two sets of pull rod (21) are the vertical state and run through two sets of mounting groove (33) inner chamber top lateral wall, two sets of second base (20) are the horizontality respectively with two sets of pull rod (21) lower extreme fixed connection, two sets of second base (20) end lateral wall central point puts and has seted up two sets of rotating grooves and correspond with two sets of first base (19) top lateral wall on two sets of rotating groove positions.

4. A laboratory culture dish placement device according to claim 3, wherein: two sets of spacing springs (22) have been cup jointed on the outer wall of pull rod (21) bottom end, the both ends of two sets of spacing springs (22) respectively with two sets of mounting grooves (33) inner chamber top side wall and two sets of second base (20) top side wall fixed connection, rotation end (15) on two sets of rotation ear (14) bottom side wall peg graft respectively on two sets of rotation grooves on two sets of first base (19), two sets of second base (20) slip cup joint respectively through two sets of swivelling chutes under the spring action of two sets of spacing springs (22) on rotation end (15) outer wall on two sets of rotation ear (14) top side walls.

5. A laboratory culture dish placement device according to claim 2, wherein: buckle shell (23) and equipment main part (10) outside wall fixed connection just correspond with buckle piece (16) position, buckle groove (24) have been seted up to buckle shell (23) outside wall right front corner position department, buckle piece (16) left end is placed in buckle groove (24) inner chamber, L type spout (25) have been seted up to buckle shell (23) inside upper left corner position department, the vertical cavity of L type spout (25) is vertical state down, the horizontal cavity is the level and faces right state, the vertical end of L type slide bar (27) slides and pegs graft in the vertical cavity of L type spout (25), the horizontal end of L type slide bar (27) is the level and faces right state and places in the horizontal inner chamber of L type spout (25).

6. A laboratory culture dish placement device according to claim 5, wherein: l type slide bar (27) horizontal end rightmost end fixedly connected with is locating piece (28) of vertical state, locating piece (28) bottom is provided with the slope wall that is forward lower direction state, telescopic link (29) are vertical state and L type slide bar (27) horizontal end top side wall left side position fixed connection, telescopic link (29) outer wall go up cup joint the spring and the spring both ends respectively with telescopic link (29) both ends fixed connection, locating piece (28) bottom runs through L type spout (25) inner chamber wall and corresponds the position and peg graft under the spring action of spring on telescopic link (29) in constant head tank (17) inner chamber.

7. A culture dish placement device for a laboratory according to claim 6, wherein: the movable groove (26) is formed in the bottom of the inner wall face of a vertical cavity of the L-shaped sliding groove (25), the lowest end of the vertical end of the L-shaped sliding rod (27) is provided with an inclined wall face which is in a forward and downward direction state, the pressing rod (30) is in a horizontal state and penetrates through the front wall face of the inner cavity of the movable groove (26), the rear end of the pressing rod (30) is fixedly connected with a pressing block (31), the rear side wall face of the pressing block (31) is in a backward and upward direction state, and the rear side wall face of the pressing block (31) is in friction contact with the inclined wall face of the lowest end of the vertical end of the L-shaped sliding rod (27).