CN216918556U

CN216918556U - Automatic suction device of environment-friendly laboratory waste liquid

Info

Publication number: CN216918556U
Application number: CN202220509160.9U
Authority: CN
Inventors: 周骥平; 葛宇; 张键; 李跃; 居军
Original assignee: Yangzhou Tianhui Laboratory Equipment Environmental Protection Engineering Co ltd; Yangzhou University
Current assignee: Yangzhou Tianhui Laboratory Equipment Environmental Protection Engineering Co ltd; Yangzhou University
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-07-08
Anticipated expiration: 2032-03-09

Abstract

The utility model provides an automatic suction device of environment-friendly laboratory waste liquid, belong to laboratory environmental protection equipment technical field, by the suction station organism, the suction pump module, lift drive module, the overhead door, the air curtain module, the overhead door drive module, horizontal migration mechanism, embrace claw mechanism and suction spiral cover device and constitute, lift drive module is used for the control of overhead door, the operation of opening and close of overhead door is realized to overhead door drive module, horizontal migration mechanism is used for the coordinated action between suction and the spiral cover, it is used for the clamp tightly of a waste liquid section of thick bamboo to embrace claw mechanism, suction spiral cover device then is used for opening and closing of waste liquid bung, whole waste liquid suction operation process is accomplished inside inclosed suction station organism, the direct contact and the physical labor of people with the waste liquid have been avoided, it is clean environmental protection, no leakage, the harm of gas to human body and environment has been reduced.

Description

Automatic suction device of environment-friendly laboratory waste liquid

Technical Field

The utility model belongs to the technical field of laboratory environment-friendly equipment, relates to an automatic suction device, and particularly relates to an automatic waste liquid suction device for a laboratory.

Background

Laboratories in colleges and scientific research institutions may produce toxic or otherwise hazardous waste streams during the course of their experiments, in concentrations or quantities sufficient to affect human health or pollute the environment. In teaching and scientific research activities in colleges and universities, waste liquids generated in experiments are mainly liquid spent reagents, liquid experimental wastes or intermediate products (such as various organic solvents, centrifugates, liquid byproducts and the like) and various high-concentration washing liquids.

At present, various laboratories usually classify and collect laboratory waste liquid, and then send to specialized processing agency and carry out innoxious centralized processing to reduce the harm of laboratory waste liquid to the environment to minimum. After transporting laboratory waste liquid storage bucket to waste liquid centralized processing center, carry out uncapping and the waste liquid of waste liquid bucket and empty the operation by the manual work usually, the interior waste liquid of bucket flows into waste liquid treatment equipment through special pipeline and carries out subsequent processing procedure. This in-process is because people and the direct contact who stores the bucket, including opening volatilizing of waste liquid bung back corrosive liquids, all can bring harm to human body and environment, and operation process also wastes time and energy simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an environment-friendly automatic suction device for laboratory waste liquid, aiming at the defects in the process of classifying, collecting and concentrating the laboratory waste liquid at present, so as to realize the automatic uncovering and waste liquid suction operation after a waste liquid barrel is transferred to a waste liquid centralized treatment center, avoid the direct contact of people and the waste liquid, and further reduce the harm to the environment and human bodies and the physical labor.

The technical scheme of the utility model is as follows: the utility model provides an automatic suction device of environment-friendly laboratory waste liquid which characterized in that: the automatic suction device consists of a suction station body, a suction pump module, a lifting driving module, a lifting door, an air curtain module, an automatic door driving module, a horizontal moving mechanism, a claw holding mechanism and a suction cap screwing device;

the suction pump module is connected and arranged at the rear of the suction station body, the lifting door is connected and arranged in the front of the suction station body through a sliding rail, the lifting driving module is connected with the lifting door through a belt wheel, the lifting door is lifted through the driving force provided by the lifting driving module, the air curtain module is embedded in the bottom of the lifting door, the automatic door driving module is arranged below the lifting door, the horizontal moving mechanism is arranged on the inner wall of the suction station body, and the clamping claw mechanism is arranged below the horizontal moving mechanism and connected with the suction station body.

Preferably, the suction station body is a frame structure formed by connecting side plates, a gas collecting hood, a top plate, a rear baffle, an upper baffle and a frame; the side plates are arranged on two sides of the frame, the top plate is arranged on the top of the frame, the gas-collecting hood is embedded in the top plate, the rear baffle is arranged on the rear side of the frame, and the upper baffle is arranged in front of the frame; the side plates, the top plate, the rear baffle and the upper baffle are mutually connected in a sealing manner to prevent leakage of waste liquid and waste gas.

Preferably, the lifting driving module is formed by connecting a motor bracket, a lifting motor, an intermediate connecting rod, a belt, a coupler, a lifting pulley and a sliding rail; the two ends of the middle connecting rod are respectively provided with a lifting pulley and a belt, the two ends of the belt are respectively connected with a lifting door, the lifting motor is connected with the middle connecting rod, the motor support is arranged at the bottom of the lifting motor, and the middle connecting rod is sleeved with the coupler.

Preferably, the lifting door is formed by connecting a sliding block, a lifting door support and lifting door glass, the lifting door glass is embedded in the lifting door support, and the sliding block is fixedly arranged at the bottoms of the two sides of the lifting door support and is connected with the sliding rail.

Preferably, the air curtain module is connected by air curtain support, air curtain motor and fan and constitutes, and the air curtain motor is fixed in the one end of fan, and the fan embedding sets up the inboard at the air curtain support, and air curtain support upper end is connected fixedly with the overhead door support.

Preferably, the horizontal moving mechanism consists of a screw rod, a synchronous belt, two synchronous belt wheels, a horizontal transmission stepping motor, a nut seat, two sliding blocks, a polish rod fixing support, a screw rod fixing support, a push rod connecting plate and a pair of polish rods; the horizontal transmission stepping motor is connected with one synchronous belt wheel, and the other synchronous belt wheel is connected with one end of the screw rod; two synchronous pulleys pass through the hold-in range and link to each other, a pair of polished rod symmetry sets up the both sides at the lead screw, the nut seat is connected with the lead screw transmission, the other end and the lead screw fixed bolster of lead screw link to each other, lead screw fixed bolster and suction station organism fixed connection, two sliders overlap respectively on two polished rods, slider and nut seat just all with push rod connecting plate fixed connection side by side, polished rod both sides pass through polished rod fixed bolster and suction station organism fixed connection, horizontal migration mechanism provides drive power through horizontal step motor, in order to drive the motion of push rod connecting plate, in order to realize the removal of suction push rod and spiral cover push rod.

Preferably, the suction cap screwing device consists of a stepping motor, a cap screwing push rod, a suction head, a motor bracket and a cap screwing disc; the base of the suction push rod is fixedly connected with the push rod connecting plate, the other side of the suction push rod is connected with the suction head, the base of the screw cap push rod is fixedly connected with the push rod connecting plate, the other side of the screw cap push rod is connected with the motor support, the screw cap stepping motor is fixedly connected with the motor support, and the other side of the screw cap stepping motor is connected with the screw cap disc.

Preferably, the spiral cover disc is composed of a spiral cover disc cover, two springs and a pair of spiral cover holding claws; the root of the spring is fixed on the inner wall of the spiral cover disc cover, and the spiral cover holding claw is connected and fixed at the head of the spring.

Preferably, the clamping mechanism comprises a clamping claw, a clamping claw push rod and a push rod base, the push rod base is fixedly connected with the pumping station body, one end of the clamping claw push rod is fixed to the push rod base, the clamping claw is mounted at the head of the clamping claw push rod, and the clamping claw mechanism is used for fixing the waste liquid barrel and assisting the cap screwing action of the cap screwing mechanism.

Preferably, the automatic door driving module consists of a gear, a rack, a driving module mounting bracket, a telescopic push rod, a sliding chute, a sliding block, a rotary connecting piece, a door leaf and a door post; two telescopic push rods are oppositely arranged in a driving module mounting bracket, a sliding groove is arranged in the driving module mounting bracket, one side of each telescopic push rod is connected with a rack, a gear is connected and fixed at the top end of a doorpost, the gear is meshed with the rack, one end of a rotary connecting piece is sleeved on the doorpost, the other end of the rotary connecting piece is arranged at the top of a door leaf, and a sliding block is connected with the top of the door leaf and arranged in the sliding groove.

The utility model has the beneficial effects that: the utility model provides an environment-friendly laboratory waste liquid automatic suction device, which integrally comprises a suction station machine body, a suction pump module, a lifting driving module, a lifting door, an air curtain module, an automatic door driving module, a horizontal moving mechanism, a claw holding mechanism and a suction rotary cover device, when in use, a waste liquid barrel is moved to the vicinity of the suction station by a waste liquid barrel carrying trolley matched with the suction station, an operator starts suction equipment through a control panel, the automatic door is opened after the automatic door senses the trolley, the air curtain is started, the trolley carries the waste liquid barrel to an anti-leakage platform through a vehicle-mounted manipulator, the vehicle-mounted manipulator is retracted, after a suction button is started, the lifting door descends, the horizontal moving mechanism sends the waste liquid rotary cover mechanism to the upper part of the waste liquid barrel cover to automatically open the barrel cover, sends the waste liquid suction mechanism to the upper part of the waste liquid barrel cover and leads a waste liquid suction head to go deep into the waste liquid barrel, waste liquid in the barrel is sucked to external waste liquid treatment equipment through a suction pump connected with the outside, and finally the barrel cover is screwed down by a waste liquid cover screwing mechanism to control the lifting glass door to ascend. Whole waste liquid suction operation, the volatile harmful gas of waste liquid bucket open the back and take away through the fan with external connection through the tuber pipe cover. The utility model realizes the operations of opening and closing the waste liquid barrel cover, sucking the waste liquid and the like, avoids the direct contact and physical labor between people and the waste liquid, is clean and environment-friendly, has no leakage, and reduces the harm of volatile gas to human bodies and the environment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the inner structure of the spiral cover plate of the present invention.

Fig. 3 is a schematic structural diagram of an automatic door driving module according to the present invention.

Fig. 4 is a schematic structural view of a lifting door and a wind curtain module according to the present invention.

Fig. 5 is a schematic structural view of the suction station body of the present invention.

Fig. 6 is a schematic structural view of a claw holding mechanism in the present invention.

Fig. 7 is a schematic structural view of the horizontal movement mechanism of the present invention.

In the figure: the suction station comprises a suction station body 1, a side plate 101, a gas collecting hood 102, a top plate 103, a rear baffle 104, an upper baffle 105, a frame 106, a suction pump module 2, a lifting drive module 3, a first motor support 301, a lifting motor 302, an intermediate connecting rod 303, a belt 304, a coupling 305, a lifting pulley 306, a sliding rail 307, a lifting door 4, a first slider 401, a lifting door support 402, a lifting door glass 403, an air curtain module 5, an air curtain support 501, an air curtain motor 502, a fan 503, an automatic door drive module 6, a gear 601, a rack 602, a drive module mounting support 603, a telescopic push rod 604, a sliding groove 605, a second slider 606, a rotary connector 607, a door leaf 608, a door column 609, a horizontal moving mechanism 7, a rotary cover stepping motor 701, a rotary cover push rod 702, a screw rod 703, a synchronous belt 704, a synchronous pulley, a horizontal transmission stepping motor 706, a nut seat 707, a third slider 708, a polished rod fixing support 709, a lifting drive module 3, a lifting door support 301, a horizontal moving mechanism 7, a rotary cover stepping motor, a screw rods, a screw rod stepping motor, a screw rods, a synchronous belt 704, a nut seat 707, a rear baffle plate, a rear baffle plate, a rear baffle plate, a rear baffle plate, a rear plate, a, The device comprises a screw rod fixing support 710, a push rod connecting plate 711, a suction push rod 712, a suction head 713, a polished rod 714, a second motor support 715, a clamping claw mechanism 8, a clamping claw 801, a clamping claw push rod 802, a push rod base 803, a cover screwing disc 9, a cover screwing disc cover 901, a cover screwing claw 902, a spring 903 and a control panel 10.

Detailed Description

The present invention is further illustrated by the following detailed description in conjunction with the accompanying drawings, it being understood that these embodiments are illustrative of the present patent and are not intended to limit the scope of the present patent, which is defined by the claims appended hereto, as modifications of various equivalent forms by those skilled in the art upon reading the present patent.

As shown in fig. 1, an environment-friendly automatic suction device for laboratory waste liquid, relating to a suction and drainage pipeline,

the suction pump module 2 is installed at the rear of the suction station body 1, the liquid inlet of the diaphragm pump is connected with the suction head 713 through a hose, and the liquid outlet of the diaphragm pump is connected with an external waste liquid pool, so that a suction liquid discharge pipeline is formed to realize the suction function of waste liquid.

As shown in fig. 3, regarding the automatic door driving module 6, the automatic door driving module 6 is installed in the front of the pumping station body 1, two telescopic push rods 604 are installed in the driving bracket 603 relatively, a sliding groove 605 is installed inside the driving bracket, one side of the telescopic push rods is connected with a rack 602, a gear 601 is fixedly connected with a door post 609 through a key, the gear and the rack are engaged, one end of a rotary connector 607 is sleeved on the door post, the other end of the rotary connector is installed on the top of a door leaf 608, and a second sliding block 606 is connected with the top of the door leaf and installed in the sliding groove. When the door needs to be opened by sensing, the telescopic push rod pushes the rack, the rack drives the gear to rotate, the gear transmits force to the doorpost 609, so that the rotary connecting piece on the doorpost is driven to move, the door is driven to be opened, the second sliding block 606 on the door slides according to the set sliding groove, and the movement track of the door is limited. By using the door opening mode, the movement space of the door is reduced, people or objects in front of the door are prevented from being collided by mistake, the space is greatly utilized, and the safety of products is improved.

As shown in fig. 4 and 5, an environment-friendly automatic suction device for laboratory waste liquid, regarding an air curtain, a lifting air curtain is installed at the front of a laboratory machine body 1 and is installed to be staggered with an automatic door 6, and the lifting air curtain mainly includes a lifting driving module 3, a lifting door 4 and an air curtain module 5. Two ends of the middle connecting rod 303 are respectively provided with a lifting pulley 306 and a belt 304, two ends of the belt 304 are respectively connected with the lifting door 4, the lifting motor 302 is connected with the middle connecting rod 303, the first motor support 301 is installed at the bottom of the lifting motor 302, and the middle connecting rod 303 is sleeved with the coupler 305. The air curtain motor 502 is fixed at one end of the fan 503, the fan 503 is embedded inside the air curtain bracket 501, and the upper end of the air curtain bracket 501 is fixedly connected with the lifting door bracket 402. The both ends of intermediate junction pole 303 set up lift pulley 306 and belt 304 respectively, and elevator motor 302 is connected with the intermediate junction pole, and first motor support 301 installs in the elevator motor bottom, and shaft coupling 305 suit is in the intermediate junction pole, and the overhead door 4 is connected respectively at the both ends of belt to the elevating movement of control overhead door, air curtain module and overhead door bottom are connected, along with the overhead door moves together, better separation air convection, in order to keep apart waste gas.

As shown in fig. 6, regarding the claw holding mechanism 8, the push rod base 803 is fixedly connected to the pumping station body 1, one end of the claw holding push rod 802 is fixed to the push rod base 803, the claw holding 801 is mounted on the head of the claw holding push rod 802, and the claw holding mechanism 8 is used for fixing the waste liquid barrel and assisting the cap screwing action of the cap screwing disk 9.

As shown in fig. 7, regarding the horizontal moving mechanism 7, the horizontal moving mechanism 7 is fixed on the laboratory machine frame 106, the horizontal transmission stepping motor 706 is connected with the synchronous pulley 705, two synchronous pulleys are connected through the synchronous belt 704, the other synchronous pulley is connected with one end of the screw rod 703, a pair of polish rods 714 are symmetrically arranged on both sides of the screw rod, the nut seat 707 is in threaded transmission with the screw rod, the other end of the screw rod is connected with the screw rod fixing bracket 710, the screw rod fixing bracket is fixedly connected with the suction station machine body 1, the third slide block 708 is sleeved on the polish rod, the slide block and the nut seat are side by side and are fixedly connected with the push rod connecting plate 711, and both sides of the polish rod are fixedly connected with the suction station machine body through the polish rod fixing bracket 709. When the horizontal transmission stepping motor is started, power is transmitted to the screw rod through the synchronous belt 704, the screw rod rotates to realize the movement of the nut seat, the selective movement of the suction head 713 and the cap screwing mechanism 9 is realized, and the polish rods on the two sides enable the push rod connecting rod to run more stably and reduce vibration.

Referring to fig. 2, an environment-friendly automatic suction device for laboratory waste liquid is disclosed, wherein a cover-rotating disk 9 is arranged below a cover-rotating motor 701, two springs 903 are symmetrically arranged in a cover-rotating disk cover 901, and the other ends of the springs are connected with cover-rotating holding claws 902. The spring 903 is a compression spring, and a proper winding ratio is selected, wherein the larger the winding ratio is, the smaller the influence of the stiffness coefficient of the spring on the shearing stress borne by the spring is. The spiral cover holding claw 902 is of a wedge-shaped structure, a light material is selected, the stretching amount of the spiral cover push rod 702 is controlled, so that the clamping force of the spiral cover holding claw 902 on the barrel cover is controlled, and the stiffness coefficient of the spring in the initial state is large, so that the initial deformation amount is reduced to the maximum extent. The cover screwing disc 9 can be replaced according to different diameters of the bucket covers. The barrel covers with different diameters correspond to different cover rotating discs. The screw cap holding claw 902 clamps the waste liquid barrel cover through the tension force of the spring 903, and then the motor rotates to open and close the waste liquid barrel cover.

As shown in fig. 1-7, the working principle of the environment-friendly laboratory waste liquid automatic suction device is as follows: during operation, the waste liquid barrel is moved to the front of the automatic induction door 6 of the suction station by a matched trolley, after the automatic induction door senses, the automatic door is opened, when the waste liquid barrel is placed on the anti-leakage platform by the matched trolley, an operator can send a starting command through the control panel 10, the air curtain machine 5 is opened and the lifting door 4 descends slowly, the holding claw mechanism 8 holds the waste liquid barrel, when the lifting door descends in place, the horizontal moving mechanism 7 moves the push rod connecting plate 711, the rotary cover mechanism 9 is positioned above the waste liquid barrel, the rotary cover push rod 702 is pushed down, the rotary cover mechanism holds the waste liquid barrel cover tightly, the rotary cover motor 701 is started to realize the cover opening action, the push rod is recovered, the horizontal moving mechanism enables the suction head 713 to be positioned above the waste liquid barrel, the suction push rod 712 descends, when the situation that the bottom is reached is detected, the suction module 2 starts to work, and the liquid level sensor is arranged on the suction head, after all actions are finished, the lifting door rises and the automatic door is opened, the claw holding mechanism retracts, and the empty barrel is taken out by the matched trolley.

It is above, for utility model's best embodiment, realize through full automatic mode that the waste liquid bung open with operations such as closed, waste liquid suction, avoided the contact of people with the waste liquid, labour saving and time saving, no waste liquid is revealed in the operation process, clean environmental protection falls to minimumly with the pollution of waste liquid to mankind and environment.

Claims

1. The utility model provides an automatic suction device of environment-friendly laboratory waste liquid which characterized in that: the automatic suction device consists of a suction station body (1), a suction pump module (2), a lifting driving module (3), a lifting door (4), an air curtain module (5), an automatic door driving module (6), a horizontal moving mechanism (7), a claw holding mechanism (8) and a suction cover screwing device;

suction pump module (2) are connected and are set up the rear at suction station organism (1), sliding rail (307) are passed through in overhead door (4) and are connected the place ahead that sets up at suction station organism (1), lift drive module (3) link to each other with overhead door (4) through band pulley, and overhead door (4) go up and down through the drive power that lift drive module (3) provided, inlay in the bottom of overhead door (4) air curtain module (5), automatically, door drive module (6) set up the below of overhead door (4), horizontal migration mechanism (7) set up on the inner wall of suction station organism (1), embrace claw mechanism (8) and set up in the below of horizontal migration mechanism (7) and link to each other with suction station organism (1).

2. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the suction station body (1) is a frame structure formed by connecting a side plate (101), a gas collecting hood (102), a top plate (103), a rear baffle plate (104), an upper baffle plate (105) and a frame (106); the side plates (101) are arranged on two sides of the frame (106), the top plate (103) is arranged on the top of the frame (106), the gas collecting hood (102) is embedded in the top plate (103), the rear baffle (104) is arranged on the rear side of the frame (106), and the upper baffle (105) is arranged in front of the frame (106); the side plate (101), the top plate (103), the rear baffle plate (104) and the upper baffle plate (105) are hermetically connected with each other to prevent leakage of waste liquid and waste gas.

3. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the lifting driving module (3) is formed by connecting a first motor support (301), a lifting motor (302), an intermediate connecting rod (303), a belt (304), a coupler (305), a lifting pulley (306) and a sliding rail (307); the both ends of intermediate junction pole (303) set up lift pulley (306) and belt (304) respectively, and lift door (4) are connected respectively at the both ends of belt (304), elevator motor (302) and intermediate junction pole (303) are connected, and first motor support (301) are installed in the bottom of elevator motor (302), and shaft coupling (305) cover is put on intermediate junction pole (303).

4. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the lifting door (4) is formed by connecting a first sliding block (401), a lifting door support (402) and lifting door glass (403), the lifting door glass (403) is embedded in the lifting door support (402), and the first sliding block (401) is fixedly installed at the bottoms of two sides of the lifting door support (402) and is connected with a sliding rail (307).

5. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the air curtain module (5) is formed by connecting an air curtain support (501), an air curtain motor (502) and a fan (503), the air curtain motor (502) is fixed at one end of the fan (503), the fan (503) is embedded into the inner side of the air curtain support (501), and the upper end of the air curtain support (501) is fixedly connected with the lifting door support (402).

6. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the horizontal moving mechanism (7) is composed of a screw rod (703), a synchronous belt (704), two synchronous belt wheels (705), a horizontal transmission stepping motor (706), a nut seat (707), two third sliding blocks (708), a polish rod fixing bracket (709), a screw rod fixing bracket (710), a push rod connecting plate (711) and a pair of polish rods (714); the horizontal transmission stepping motor (706) is connected with one synchronous belt wheel (705), and the other synchronous belt wheel (705) is connected with one end of the screw rod (703); two synchronous pulleys (705) are connected through a synchronous belt (704), a pair of polish rods (714) are symmetrically arranged on two sides of a lead screw (703), a nut seat (707) is in transmission connection with the lead screw (703), the other end of the lead screw (703) is connected with a lead screw fixing support (710), the lead screw fixing support (710) is fixedly connected with a suction station body (1), two third slide blocks (708) are respectively sleeved on the two polish rods (714), the third slide blocks (708) and the nut seat (707) are arranged side by side and are fixedly connected with a push rod connecting plate (711), two sides of the polish rods (714) are fixedly connected with the suction station body (1) through polish rod fixing supports (709), and a horizontal moving mechanism (7) provides driving force through a horizontal transmission stepping motor (706) to drive the movement of the push rod connecting plate (711) so as to realize the movement of the suction push rods (712) and the rotary cover push rods (702).

7. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the suction cap screwing device is composed of a stepping motor (701), a cap screwing push rod (702), a suction push rod (712), a suction head (713), a second motor support (715) and a cap screwing disc (9); the base of the suction push rod (712) is fixedly connected with the push rod connecting plate (711), the other side of the suction push rod (712) is connected with the suction head (713), the base of the cap screwing push rod (702) is fixedly connected with the push rod connecting plate (711), the other side of the cap screwing push rod (702) is connected with the second motor support (715), the cap screwing stepping motor (701) is fixedly connected with the second motor support (715), and the other side of the cap screwing stepping motor (701) is connected with the cap screwing disc (9).

8. The automatic suction device of environment-friendly laboratory waste liquid according to claim 7, characterized in that: the cover rotating disc (9) is composed of a cover rotating disc cover (901), two springs (903) and a pair of cover rotating holding claws (902); the root of the spring (903) is fixed on the inner wall of the spiral cover disc cover (901), the spiral cover embracing claw (902) is connected and fixed at the head of the spring (903), the spiral cover embracing claw (902) is of a wedge-shaped structure, and the clamping force of the spiral cover embracing claw (902) on a barrel cover can be conveniently controlled by controlling the telescopic amount of the spiral cover push rod (702).

9. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the clamping claw mechanism (8) is composed of a clamping claw (801), a clamping claw push rod (802) and a push rod base (803), the push rod base (803) is fixedly connected with the suction station body (1), one end of the clamping claw push rod (802) is fixed to the push rod base (803), the clamping claw (801) is installed at the head of the clamping claw push rod (802), and the clamping claw mechanism (8) is used for fixing a waste liquid barrel and assisting in cover screwing action of the cover screwing disc (9).

10. The automatic pumping device of environment-friendly laboratory waste liquid according to claim 1, characterized in that: the automatic door driving module (6) is composed of a gear (601), a rack (602), a driving module mounting bracket (603), a telescopic push rod (604), a sliding groove (605), a second sliding block (606), a rotary connecting piece (607), a door leaf (608) and a door post (609); two telescopic push rods (604) are relatively installed in a driving module installing support (603), the sliding groove is installed inside the driving module installing support (603), one side of each telescopic push rod (604) is connected with a rack (602), a gear (601) is connected and fixed to the top end of a doorpost (609), the gear (601) is meshed with the rack (602), one end of a rotary connecting piece (607) is sleeved on the doorpost (609), the other end of the rotary connecting piece is installed at the top of a door leaf (608), and a second sliding block (606) is connected with the top of the door leaf (608) and installed in the sliding groove (605).