CN214309682U - Liquid sample sampling device for biological detection - Google Patents

Abstract

The invention discloses a liquid sample sampling device for biological detection, which comprises a base and a sampling assembly, wherein the middle part of the lower end of the base is provided with a roller train, the middle part of the rear end of the base is fixedly provided with a traction ring, the rear part of the upper end of the base is fixedly provided with a control box, the front part of the upper end of the base is fixedly provided with a driving device, one side of the upper end of the driving device is fixedly provided with a mounting frame, the mounting frame is matched with a lifting assembly, a hemp rope is jointly connected between the lifting assembly and the sampling assembly, the rear part of the lower end of the base is fixedly provided with supporting legs, the rear end of the control box is provided with a control panel, and a plc controller and a storage battery are arranged in the control box. The liquid sample sampling device for biological detection can effectively replace a manual sampling mode to sample water, effectively improves the sampling range and depth, greatly improves the working efficiency, and is suitable for wide popularization and application.

Description

Liquid sample sampling device for biological detection

Technical Field

The invention relates to the field of biological detection auxiliary tools, in particular to a liquid sample sampling device for biological detection.

Background

The biological detection utilizes the reaction of biological individuals and population communities to the environmental pollution or change to clarify the environmental pollution condition, and provides biological detection basis for the monitoring and evaluation of environmental quality from the biological perspective. Biological monitoring comprises three major parts of water, soil and atmospheric pollution, and biological monitoring is to regularly and systematically determine the environmental quality including the water, the gas and the soil environment by utilizing the reaction information of organisms to the environment, which means that one or more environmental parameters are regularly or continuously evaluated so as to find out the pollution condition of the environment. The ecosystem is the theoretical basis for biological monitoring, and has inherent characteristics that maintain the structure and function of the system in a certain area. The environmental pollution inevitably affects the change of the inherent structure and function of the ecosystem, and the biological monitoring can reflect the ecological effect of the environmental pollution and provide biological active reaction information for environmental control and management.

In the biological detection work to the water, need use water sampling device, and among the prior art, the manual container that adopts of most adopting carries out the water sample, and to great scope or darker waters, the mode of artifical manual sampling has certain limitation, and the sample range is less to there is certain potential safety hazard.

Disclosure of Invention

The invention mainly aims to provide a liquid sample sampling device for biological detection, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a liquid sample sampling device for biological detection, includes base and sampling component, base lower extreme middle part is provided with the roller train, base rear end middle part fixed mounting has the traction ring, base upper end rear portion fixed mounting has the control box, the anterior fixed mounting in base upper end has drive arrangement, drive arrangement upper end one side fixed mounting has the mounting bracket, the supporting lifting unit that is provided with on the mounting bracket, be connected with the rope made of hemp jointly between lifting unit and the sampling component, base lower extreme rear portion fixed mounting has the supporting legs, the control box rear end is provided with control panel, be provided with plc controller and battery in the control box.

Preferably, the driving device comprises a mounting seat and two limiting plates, the mounting seat and the limiting plates are both fixedly mounted at the upper end of the base, the number of the limiting plates is two, and the upper parts of the opposite surfaces of the two limit plates are fixedly provided with two horizontal plates which are respectively in an integrated structure with the two limit plates, and a limit groove is formed between the two horizontal plates positioned on the same vertical direction, a moving plate is connected in the two limit grooves in a sliding way, and the middle part of the left end of the movable plate is provided with a threaded hole which is penetrated through from left to right, the upper end of the mounting seat is fixedly provided with a driving motor, the output end of the driving motor is fixedly provided with a screw rod through a coupler, the upper parts of the left ends of the upper ends of the two limit plates are jointly and fixedly provided with a stabilizing plate, the right end of the screw rod penetrates through the stabilizing plate and the threaded hole in sequence and is in threaded connection with the threaded hole, and the screw rod is connected with the stabilizing plate through a bearing.

Preferably, the moving plate is made of high-strength metal, and the upper end face and the lower end face of the moving plate are polished to be smooth faces in advance.

Preferably, the mounting frame comprises a vertical rod, a fixing plate is fixedly mounted at the upper part of the front end of the vertical rod, and a vertical plate is fixedly mounted at the front part of the lower end of the fixing plate.

Preferably, lifting unit includes elevator motor, elevator motor fixed mounting is in vertical pole rear end upper portion, rotate through the bearing between vertical board and the vertical pole and be connected with the center pin, center pin outer fixed surface installs the wind-up roll, the one end and the wind-up roll fixed connection and the winding of coarse hemp rope are installed at the wind-up roll surface, the center pin rear end runs through vertical pole and through shaft coupling fixed connection at elevator motor's output.

Preferably, the vertical rod is fixedly installed at the left part of the upper end of the movable plate to fixedly connect the mounting frame and the driving device together, and the front end of the fixed plate extends to the front of the base.

Preferably, the sampling component includes the L template, the horizontal part upper end right part fixed mounting of L template has the balancing weight, the vertical part left end fixed mounting of L template has the seal box, and the seal box left end has sealed lid through bolt sealing connection, and seal box inner chamber right side tank wall equidistance fixed mounting has three electric telescopic handle of group, electric telescopic handle's the equal fixed mounting of output has the piston rod, the vertical part right-hand member equidistance fixed mounting of L template has three mount, and three mount front end all is provided with the sampling bottle.

Preferably, the mount includes the mounting panel, mounting panel front end middle part fixed mounting has arc elasticity cardboard, arc elasticity cardboard right-hand member fixed mounting has the snap ring, arc elasticity cardboard rear portion is located same vertical position and sets up the spacing hole of two upper and lower break-over, and two spacing downthehole swing joint that interlude jointly have the inserted bar, the sampling bottle card is established in the arc wall of arc elasticity cardboard and is located between snap ring and the inserted bar, lifting unit's one end fixed mounting is kept away from to the rope made of hemp has the go-between, go-between lower part symmetry fixed mounting has two connecting rods, and two connecting rods keep away from the one end symmetry fixed connection of go-between in the horizontal part upper end of L template.

Preferably, the sampling bottle rear end is provided with the opening, the piston rod is kept away from electric telescopic handle's one end and is run through the vertical part of L template and extend to its inner chamber and fixed mounting through the opening of sampling bottle rear end and have the piston, the bottleneck department thread sealing of sampling bottle has the check valve, the one end fixedly connected with filter head of sampling bottle is kept away from to the check valve.

Preferably, the filter head is inside cavity and both ends open-ended cylindrical structure, one side inner wall that the filter head is close to the sampling bottle is carved with the internal thread, one side inner wall fixed mounting that the nearly sampling bottle was kept away from to the filter head has the spacing ring, the filter head inner chamber is placed and is had the same filter screen with filter head cross-sectional diameter.

Preferably, one end of the hemp rope, which is far away from the lifting assembly, is fixedly provided with a connecting ring, the lower part of the connecting ring is symmetrically and fixedly provided with two connecting rods, and one ends of the two connecting rods, which are far away from the connecting ring, are symmetrically and fixedly connected to the upper end of the horizontal part of the L-shaped plate.

Compared with the prior art, the invention has the following beneficial effects:

1. through being provided with drive arrangement, work after driving motor circular telegram, can drive the screw rod and rotate, through horizontal plate and spacing groove cooperation, can utilize the lead screw principle, make the movable plate slide between two limiting plates, and then control mounting bracket and lifting unit remove thereupon, be convenient for remove the position far away from the offshore limit with the sampling unit, and then improved the sample range, the movable plate is made for the high strength metal material, the intensity of whole movable plate is big, can bear whole mounting bracket, lifting unit and sampling unit's weight and indeformable, movable plate up end and lower terminal surface all polish into the smooth surface in advance, and the friction between the spacing groove is enough little, energy consumption is reduced.

2. Through being provided with lifting unit, after elevator motor work, can drive the wind-up roll through the center pin and rotate, and then realize the rolling or release the rope made of hemp, release the in-process, sampling component can descend under the action of gravity of self and enter into the water to can be convenient for carry out corresponding sample work to the water of certain degree of depth.

3. Through being provided with the sampling subassembly, before the sample, after the sampling subassembly enters into the water inside, control panel control electric telescopic handle work through the control box rear end, the telescopic link shrink, draw the piston to the left side, the sampling bottle card is established in the arc wall of arc elasticity cardboard and is located between snap ring and the inserted bar this moment, can't carry out the displacement, form the negative pressure in the sampling bottle this moment, and then can inhale water by the check valve, reach the purpose of sample, three sampling bottle samples to the water of the different degree of depth respectively, the sampling finishes the back, can take out the sampling bottle and wash, thereby be convenient for sample the water in different waters, its practicality is better.

Drawings

FIG. 1 is a schematic view of the overall structure of a liquid sample sampling device for bioassay according to the present invention;

FIG. 2 is a schematic view of the operation of a liquid sampling device for bioassay according to the present invention;

FIG. 3 is a schematic view showing the overall structure of a driving unit of a liquid sample sampling apparatus for bioassay according to the present invention;

FIG. 4 is a schematic diagram of the overall structure of a mounting frame and a lifting assembly of a liquid sampling device for biological detection according to the present invention;

FIG. 5 is a schematic view of the entire structure of a sampling assembly of a liquid sampling device for bioassay according to the present invention;

FIG. 6 is a schematic view of the entire structure of the holder of the liquid sample sampling device for bioassay according to the present invention;

FIG. 7 is a schematic view of the connection between a piston rod and a sampling bottle of a liquid sampling device for biological detection according to the present invention;

FIG. 8 is a cross-sectional view of a filter head of a liquid sample sampling device for bioassay according to the present invention.

In the figure: 1. a base; 2. a roller set; 3. a traction ring; 4. a control box; 5. a drive device; 51. a mounting seat; 52. a limiting plate; 53. a drive motor; 54. a horizontal plate; 55. a limiting groove; 56. a stabilizing plate; 57. a screw; 58. moving the plate; 59. a threaded hole; 6. a mounting frame; 61. a vertical rod; 62. a fixing plate; 63. a vertical plate; 7. a lifting assembly; 71. a lifting motor; 72. a central shaft; 73. a wind-up roll; 8. a sampling assembly; 81. an L-shaped plate; 82. a balancing weight; 83. a sealing box; 84. a sealing cover; 85. an electric telescopic rod; 86. a piston rod; 87. a fixed mount; 871. mounting a plate; 872. an arc-shaped elastic clamping plate; 873. a snap ring; 874. a limiting hole; 875. inserting a rod; 88. a sampling bottle; 881. a one-way valve; 882. a filter head; 884. an internal thread; 885. a limiting ring; 886. filtering with a screen; 9. a hemp rope; 91. a connecting ring; 92. a connecting rod; 10. support the feet.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-8, a liquid sample sampling device for biological detection, including base 1 and sampling component 8, base 1 lower extreme middle part is provided with wheel train 2, base 1 rear end middle part fixed mounting has traction ring 3, base 1 upper end rear portion fixed mounting has control box 4, the anterior fixed mounting in base 1 upper end has drive arrangement 5, drive arrangement 5 upper end one side fixed mounting has mounting bracket 6, the supporting lifting unit 7 that is provided with on mounting bracket 6, be connected with rough hemp rope 9 between lifting unit 7 and the sampling component 8 jointly, base 1 lower extreme rear portion fixed mounting has supporting legs 10, control box 4 rear end is provided with control panel, be provided with plc controller and battery in the control box 4.

The driving device 5 comprises a mounting seat 51 and two limiting plates 52, wherein the mounting seat 51 and the limiting plates 52 are fixedly mounted at the upper end of the base 1, the number of the limiting plates 52 is two, two horizontal plates 54 are fixedly mounted at the upper parts of the opposite surfaces of the two limiting plates 52, the two horizontal plates 54 are respectively in an integrated structure with the two limiting plates 52, a limiting groove 55 is formed between the two horizontal plates 54 positioned in the same vertical direction, a moving plate 58 is jointly and slidably connected in the two limiting grooves 55, a threaded hole 59 penetrating through the left end and the right end is formed in the middle part of the left end of the moving plate 58, a driving motor 53 is fixedly mounted at the upper end of the mounting seat 51, a screw rod 57 is fixedly mounted at the output end of the driving motor 53 through a coupler, a stabilizing plate 56 is jointly and fixedly mounted at the upper parts of the left ends of the two limiting plates 52, the right end of the screw rod 57 sequentially penetrates through the stabilizing plate 56 and the threaded hole 59 and is in the threaded hole 59, and the screw 57 and the stabilizing plate 56 are connected by a bearing.

It can be seen that, the driving motor 53 works after being electrified, can drive the screw 57 to rotate, and through the cooperation of the horizontal plate 54 and the limiting groove 55, the screw rod principle can be utilized, so that the moving plate 58 slides between the two limiting plates 52, and then the mounting frame 6 and the lifting assembly 7 are controlled to move along with the moving plate, the sampling assembly 8 is convenient to move to a position far away from the offshore edge, and the sampling range is further improved.

It should be particularly noted that the moving plate 58 is made of a high-strength metal material, the whole moving plate 58 has high strength and can bear the weight of the whole mounting frame 6, the lifting assembly 7 and the sampling assembly 8 without deformation, the upper end surface and the lower end surface of the moving plate 58 are polished into smooth surfaces in advance, friction between the upper end surface and the limiting groove 55 is small enough, and energy consumption is reduced.

The mounting rack 6 comprises a vertical rod 61, a fixing plate 62 is fixedly arranged at the upper part of the front end of the vertical rod 61, and a vertical plate 63 are fixedly arranged at the front part of the lower end of the fixing plate 62; the lifting assembly 7 comprises a lifting motor 71, the lifting motor 71 is fixedly arranged at the upper part of the rear end of the vertical rod 61, a central shaft 72 is rotatably connected between the vertical plate 63 and the vertical rod 61 through a bearing, a winding roller 73 is fixedly arranged on the outer surface of the central shaft 72, one end of a hemp rope 9 is fixedly connected with the winding roller 73, the hemp rope 9 is wound on the outer surface of the winding roller 73, and the rear end of the central shaft 72 penetrates through the vertical rod 61 and is fixedly connected to the output end of the lifting motor 71 through a coupler; the vertical rod 61 is fixedly installed at the left part of the upper end of the moving plate 58 to fixedly connect the mounting frame 6 and the driving device 5 together, and the front end of the fixed plate 62 extends to the front of the base 1.

It can be seen that after the lifting motor 71 works, the central shaft 72 can drive the winding roller 73 to rotate, so that the hemp rope 9 can be wound or discharged, and in the discharging process, the sampling assembly 8 can descend into the water body under the action of the gravity of the sampling assembly, so that the targeted sampling work can be conveniently performed on the water body with a certain depth.

The sampling assembly 8 comprises an L-shaped plate 81, a balancing weight 82 is fixedly mounted at the right part of the upper end of the horizontal part of the L-shaped plate 81, a sealing box 83 is fixedly mounted at the left end of the vertical part of the L-shaped plate 81, the left end of the sealing box 83 is connected with a sealing cover 84 in a sealing manner through a bolt, three groups of electric telescopic rods 85 are fixedly mounted on the box wall at the right side of the inner cavity of the sealing box 83 at equal intervals, piston rods 86 are fixedly mounted at the output ends of the electric telescopic rods 85, three fixing frames 87 are fixedly mounted at the right end of the vertical part of the L-shaped plate 81 at equal intervals, and sampling bottles 88 are arranged at the front ends of the three fixing frames 87; the fixing frame 87 comprises a mounting plate 871, an arc-shaped elastic clamping plate 872 is fixedly mounted in the middle of the front end of the mounting plate 871, a clamping ring 873 is fixedly mounted at the right end of the arc-shaped elastic clamping plate 872, two limiting holes 874 which penetrate up and down are formed in the same vertical position at the rear part of the arc-shaped elastic clamping plate 872, an inserting rod 875 is movably connected in the two limiting holes 874 in a penetrating manner, and the sampling bottle 88 is clamped in an arc-shaped groove of the arc-shaped elastic clamping plate 872 and is located between the clamping ring 873 and the inserting rod 875; an opening is formed in the rear end of the sampling bottle 88, one end, far away from the electric telescopic rod 85, of the piston rod 86 penetrates through the vertical part of the L-shaped plate 81, extends to the inner cavity of the sampling bottle 88 through the opening in the rear end of the sampling bottle 88 and is fixedly provided with a piston, a check valve 881 is connected to the bottle opening of the sampling bottle 88 in a threaded sealing manner, and one end, far away from the sampling bottle 88, of the check valve 881 is fixedly connected with a filter 882; filter head 882 is inside cavity and both ends open-ended cylindrical structure, and one side inner wall that filter head 882 is close to sampling bottle 88 is carved with internal thread 884, and one side inner wall fixed mounting that filter head 882 kept away from nearly sampling bottle 88 has spacing ring 885, and filter head 882 inner chamber has placed the filter screen 886 the same with filter head 882 cross-sectional diameter.

It should be noted that, before the sample, the piston in the sampling bottle 88 hugs closely sampling bottle 88 inner chamber right wall, after sampling subassembly 8 enters into the water inside, control panel control electric telescopic handle 85 work through control box 4 rear end, the shrink of piston rod 86, pull the piston to the left, sampling bottle 88 card is established in the arc wall of arc elasticity cardboard 872 and is located between snap ring 873 and the inserted bar 875 this moment, can't carry out the displacement, form the negative pressure in the sampling bottle 88 this moment, and then can inhale water by check valve 881, reach the purpose of sample, three sampling bottle 88 samples to the water of the different degree of depth respectively.

In addition, in the process of sampling, through being provided with filter 882, be provided with filter screen 886 in the filter 882, can filter the impurity of the great volume of water, avoid it to enter into sampling bottle 88.

It needs to be further explained that, after the inserted link 875 is drawn out from the two limit holes 874, the piston rod 86 is contracted through the electric telescopic rod 85, the piston is taken out from the sampling bottle 88, the sampling bottle 88 can be taken out for cleaning, so that the water in different water areas can be sampled conveniently, and the practicability is better.

It should be noted that the three electric telescopic rods 85 are electrically connected to the control box 4 through wires (not shown in the figure), and the three electric telescopic rods 85 are located in the sealing box 83 and sealed by the sealing cover 84, i.e. before working, it is necessary to ensure that the sealing box 83 has good sealing performance.

One end fixed mounting that lifting unit 7 was kept away from to rope 9 has go-between 91, and go-between 91 lower part symmetry fixed mounting has two connecting rods 92, and two connecting rods 92 keep away from the one end symmetry fixed connection of go-between 91 in the horizontal part upper end of L template 81, with the balancing weight 82 cooperation of L template 81 upper end, in the use, can guarantee to be in the horizontality all the time at sampling in-process sampling bottle 88.

In the invention, the driving motor 53 and the lifting motor 71 both adopt commercially available low-speed servo motors, the driving motor 53 and the lifting motor 71 are both electrically connected with the PLC in the control box 4, and the storage battery in the control box 4 comprises but is not limited to a storage battery capable of being charged circularly.

The working principle of the invention is as follows: before use, the storage battery in the control box 4 is ensured to be sufficient in electric quantity, the sealing box 83 is ensured to be good in sealing performance, the device is moved to the shore of a water area needing to be sampled by utilizing a traction device, one end of the moving plate 58 extending is aligned to the direction of the water area, the driving motor 53 is electrified to work and can drive the screw 57 to rotate, the moving plate 58 can slide between the two limiting plates 52 by utilizing the screw rod principle through the cooperation of the horizontal plate 54 and the limiting groove 55, the mounting frame 6 and the lifting assembly 7 are further controlled to move along with the moving, the sampling assembly 8 is convenient to move to a position far away from the shore, the driving motor 53 stops working after the position is determined, the winding roller 73 can be driven to rotate by the central shaft 72 after the lifting motor 71 works, the hemp rope 9 is discharged, and the sampling assembly 8 can descend into the water body under the action of self gravity in the discharging process, reach the predetermined sampling degree of depth after, elevator motor 71 stop work, control panel control electric telescopic handle 85 work through control box 4 rear end, piston rod 86 contracts, draw the piston to the left side, sampling bottle 88 card is established in the arc wall of arc elasticity cardboard 872 and is located between snap ring 873 and the inserted bar 875 this moment, can't carry out the displacement, form the negative pressure in sampling bottle 88 this moment, and then can inhale water by check valve 881, reach the purpose of sample, continue to control elevator motor 71, driving motor 53 and electric telescopic handle 85 work, can take out the water sample in three sampling bottle 88, accomplish the sampling process.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a liquid sample sampling device for biological assay, includes base (1) and sampling component (8), its characterized in that: base (1) lower extreme middle part is provided with wheel train (2), base (1) rear end middle part fixed mounting has traction ring (3), base (1) upper end rear portion fixed mounting has control box (4), the anterior fixed mounting in base (1) upper end has drive arrangement (5), drive arrangement (5) upper end one side fixed mounting has mounting bracket (6), it is provided with lifting unit (7) to form a complete set on mounting bracket (6), be connected with rope made of hemp (9) between lifting unit (7) and sampling component (8) jointly, base (1) lower extreme rear portion fixed mounting has supporting legs (10), control box (4) rear end is provided with control panel, be provided with plc controller and battery in control box (4).

2. The liquid sample sampling device for bioassay as set forth in claim 1, wherein: the driving device (5) comprises a mounting seat (51) and two limiting plates (52), wherein the mounting seat (51) and the limiting plates (52) are fixedly mounted at the upper end of the base (1), the two limiting plates (52) are arranged, two horizontal plates (54) are fixedly mounted on the upper portions of opposite surfaces of the two limiting plates (52), the two horizontal plates (54) are respectively of an integrally formed structure with the two limiting plates (52), a limiting groove (55) is formed between the two horizontal plates (54) in the same vertical direction, a movable plate (58) is connected in the limiting groove (55) in a sliding mode, a threaded hole (59) penetrating left and right is formed in the middle of the left end of the movable plate (58), a driving motor (53) is fixedly mounted at the upper end of the mounting seat (51), and a screw rod (57) is fixedly mounted at the output end of the driving motor (53) through a coupler, two limiting plate (52) upper end left end upper portion is fixed mounting jointly has stabilising plate (56), screw rod (57) right-hand member runs through stabilising plate (56) and screw hole (59) and threaded connection in screw hole (59) in proper order, and the connected mode of screw rod (57) and stabilising plate (56) is the bearing connection.

3. The liquid sample sampling device for bioassay as set forth in claim 2, wherein: the moving plate (58) is made of high-strength metal materials, and the upper end face and the lower end face of the moving plate (58) are polished into smooth faces in advance.

4. The liquid sample sampling device for bioassay as set forth in claim 1, wherein: mounting bracket (6) include vertical pole (61), vertical pole (61) front end upper portion fixed mounting has fixed plate (62), fixed plate (62) lower extreme front portion fixed mounting has vertical board (63), vertical board (63).

5. The liquid sample sampling device for bioassay as set forth in claim 4, wherein: lifting unit (7) include elevator motor (71), elevator motor (71) fixed mounting is in vertical pole (61) rear end upper portion, rotate through the bearing between vertical board (63) and vertical pole (61) and be connected with center pin (72), center pin (72) outer fixed surface installs wind-up roll (73), the one end and wind-up roll (73) fixed connection and the winding of coarse hemp rope (9) are installed at wind-up roll (73) surface, center pin (72) rear end runs through vertical pole (61) and through shaft coupling fixed connection at the output of elevator motor (71).

6. The liquid sample sampling device for bioassay as set forth in claim 4, wherein: the vertical rod (61) is fixedly installed at the left part of the upper end of the moving plate (58) to fixedly connect the mounting rack (6) and the driving device (5) together, and the front end of the fixing plate (62) extends to the front of the base (1).

7. The liquid sample sampling device for bioassay as set forth in claim 1, wherein: the sampling assembly (8) comprises an L-shaped plate (81), the upper right part of the horizontal part of the L-shaped plate (81) is fixedly provided with a balancing weight (82), the left end of the vertical part of the L-shaped plate (81) is fixedly provided with a sealing box (83), the left end of the sealing box (83) is connected with a sealing cover (84) through a bolt in a sealing way, three groups of electric telescopic rods (85) are fixedly arranged on the box wall of the inner cavity of the sealing box (83) at equal intervals, the output end of each electric telescopic rod (85) is fixedly provided with a piston rod (86), three fixing frames (87) are fixedly arranged on the right end of the vertical part of the L-shaped plate (81) at equal intervals, sampling bottles (88) are arranged at the front ends of the three fixing frames (87), one end of the hemp rope (9) far away from the lifting assembly (7) is fixedly provided with a connecting ring (91), and two connecting rods (92) are symmetrically and fixedly arranged at the lower part of the connecting ring (91), and one ends of the two connecting rods (92) far away from the connecting ring (91) are symmetrically and fixedly connected to the upper end of the horizontal part of the L-shaped plate (81).

8. The liquid sample sampling device for bioassay as set forth in claim 7, wherein: the fixing frame (87) comprises a mounting plate (871), an arc-shaped elastic clamping plate (872) is fixedly mounted in the middle of the front end of the mounting plate (871), a clamping ring (873) is fixedly mounted at the right end of the arc-shaped elastic clamping plate (872), the rear portion of the arc-shaped elastic clamping plate (872) is located at the same vertical position, two limiting holes (874) which are vertically penetrated are formed, an inserting rod (875) is inserted into the two limiting holes (874) in a penetrating mode, and a sampling bottle (88) is clamped in an arc-shaped groove of the arc-shaped elastic clamping plate (872) and located between the clamping ring (873) and the inserting rod (875).

9. The liquid sample sampling device for bioassay as set forth in claim 7, wherein: sampling bottle (88) rear end is provided with the opening, the one end that electric telescopic handle (85) was kept away from in piston rod (86) runs through the vertical part of L template (81) and extends to its inner chamber and fixed mounting through the opening of sampling bottle (88) rear end has the piston, the bottleneck department thread sealing of sampling bottle (88) is connected with check valve (881), the one end fixedly connected with filter head (882) of sampling bottle (88) are kept away from to check valve (881).

10. The liquid sample sampling device for bioassay as set forth in claim 9, wherein: filter head (882) is inside cavity and both ends open-ended cylindrical structure, one side inner wall that filter head (882) is close to sampling bottle (88) is carved with internal thread (884), one side inner wall fixed mounting that nearly sampling bottle (88) was kept away from in filter head (882) has spacing ring (885), filter head (882) inner chamber has been placed and has been filtered filter screen (886) that the cross-sectional diameter is the same with filter head (882).

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