CN213943545U

CN213943545U - Centrifugal device for genetic engineering

Info

Publication number: CN213943545U
Application number: CN202022022058.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Ruan Xiaofang
Current assignee: Dongguan Shidu Biotechnology Co.,Ltd.
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-08-13
Anticipated expiration: 2030-09-16

Abstract

The utility model belongs to the technical field of genetic engineering experimental facilities technique and specifically relates to a centrifugal device for genetic engineering, which comprises a housing, a baffle is arranged in the housing, the baffle lateral wall is respectively and fixedly installed on the housing inside wall, the baffle top is installed with the axle sleeve, the bottom in the housing is fixedly installed with the motor, the output shaft of the motor runs through the axle sleeve and is rotatably installed in the axle sleeve, the housing is internally provided with a corner head, the centrifugal device also comprises a wire, one side of the housing top is hinged with a top door cover, one side of the top door cover top is hinged with a handle, the housing is internally provided with a door lock mechanism, one side in the housing is fixedly installed with an electric push rod, the housing is fixedly installed with a controller button, and the middle part of one side of the top door cover is fixedly installed with a lantern ring; through setting up lock mechanism cooperation controller, through the start-up of controller control electric putter, electric putter promotes the piece antedisplacement, and the lantern ring is run through to sleeve pipe one end, and the sleeve pipe can be established in the lantern ring to carry out spacing fixed to the overhead door lid.

Description

Centrifugal device for genetic engineering

Technical Field

The utility model relates to a genetic engineering experimental facilities technical field especially relates to a centrifugal device for genetic engineering.

Background

The centrifugal machine utilizes the centrifugal force generated by the rotary rotor to separate the substances with different densities and different particle sizes in the suspension or emulsion, or the centrifugal machine can be used as an instrument for analysis while separation, and the application field is wide. The centrifugal machine for genetic engineering is a small-sized centrifugal machine specially used for experimental analysis. The centrifugal machine makes the object rotating around the fixed rotating shaft produce the effect of simulating the earth gravity field by the centrifugal force, and makes the object do the sedimentation motion, thereby separating the fractions with different densities and different molecules t in the substance. At present, the centrifugal machine for genetic engineering is widely applied to scientific research and production departments and becomes one of important instruments and equipment for modern scientific research. The centrifugal machine for genetic engineering is a necessary device for scientific research and production in the industries of biology, medicine, agriculture, bioengineering, genetic engineering and the like.

In order to consider centrifuge's safety in utilization and the sample in the protection centrifuge, current centrifuge should close the top cap through setting up top cap and centrifuge before the work, and current centrifuge's top cap is because not having the hasp structure, can't carry on spacing fixedly to the top cap on the one hand, simultaneously because the top cap can be opened in the centrifuge operation, causes the centrifuging tube because of the vibration after breaking, and the rotatory departure of glass piece takes place the accident, for this reason we provide a centrifugal device for genetic engineering.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the top cover of the centrifugal machine for genetic engineering in the prior art cannot limit and fix the top cover due to no locking structure, and providing the centrifugal device for genetic engineering.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the centrifugal device for genetic engineering comprises a shell, wherein a partition plate is arranged in the shell, the outer side wall of the partition plate is respectively and fixedly installed on the inner side wall of the shell, an axle sleeve is installed at the top of the partition plate, a motor is fixedly installed at the bottom in the shell, an output shaft of the motor penetrates through the axle sleeve and is rotatably installed in the axle sleeve, an angle head is arranged in the shell, the bottom of the angle head is fixedly installed at the top end part of the output shaft of the motor and further comprises a lead, the lead penetrates through the shell and is electrically connected with the motor, a top door cover is hinged to one side of the top of the shell, a handle is fixedly installed at one side of the top door cover, a door lock mechanism is arranged in the shell and comprises a U-shaped plate, the U-shaped plate is fixedly installed at the upper end of one side in the shell, a sleeve is arranged in the U-shaped plate, and the two ends of the sleeve respectively penetrate through the U-shaped plate and the side wall of the shell, the improved shell is characterized in that a round plate is sleeved on the sleeve, the round plate is fixedly connected with the sleeve, the round plate is positioned in a U-shaped plate, a first spring is sleeved on the sleeve, two ends of the first spring are respectively and fixedly connected to the side walls of the round plate and the shell, sliding grooves are respectively formed in two sides of the U-shaped plate, clamping grooves are respectively formed in the bottoms of the sliding grooves, sliding blocks are respectively and fixedly installed on two sides of the round plate, the sliding blocks are respectively and slidably arranged in the sliding grooves, clamping blocks are respectively and slidably arranged in the clamping grooves, a pushing block is respectively and fixedly installed at the bottom of the round plate, an electric push rod is fixedly installed on one side in the shell, the output end of the electric push rod is fixedly connected to one side of the pushing block, a controller is fixedly installed outside the shell, the electric push rod is in signal connection with the controller, and the controller is used for controlling the electric push rod, and the middle part of one side of the top door cover is fixedly provided with a lantern ring.

Preferably, the outer side of the shell is provided with a power-on self-locking mechanism, the power-on self-locking mechanism comprises an outer shell, one side and the upper end of the outer shell are open, the outer shell is fixedly arranged on the outer side of the shell, the PTC heating element is arranged in the outer shell and is in a sleeve shape, one end of the PTC heating element is fixedly arranged on the shell, the PTC heating element is electrically connected with an external power supply through a wire, a cylinder sleeve is inserted in the PTC heating element, one end of the cylinder sleeve is fixedly arranged on the shell, the outer side wall of the cylinder sleeve is attached to the PTC heating element, the cylinder sleeve is made of aluminum alloy, a piston is arranged in the cylinder sleeve, thermosensitive gas is filled in the cylinder sleeve, two sides in the cylinder sleeve are respectively provided with a slide way, two sides of the piston are respectively and fixedly provided, the two ends of the second spring are respectively and fixedly connected to the inner side wall of the slide way and the movable block, a piston rod is fixedly mounted at the center of one end of the piston, two vertical plates which are distributed at intervals are fixedly mounted at the bottom in the outer box body, a spline is arranged between the two vertical plates, a first screw rod is fixedly mounted at one end of the spline, one end of the first screw rod penetrates through the vertical plate at one side and is in threaded connection with the vertical plate, the first screw rod can be in threaded connection with the sleeve, a second screw rod is fixedly mounted at the other end of the spline, one end of the second screw rod penetrates through the vertical plate at the other side and is in threaded connection with the vertical plate, a first rotating shaft is arranged between the two vertical plates, the two ends of the first rotating shaft are respectively and rotatably arranged on the vertical plates at the two sides, a first gear is fixedly mounted on the first rotating shaft and is meshed with the spline, and one end of the first rotating shaft penetrates through the vertical plates, first pivot tip fixed mounting has the worm wheel, is located one side fixed mounting has two interval distribution's supporting shoe on the riser, two be equipped with the worm between the supporting shoe, the rotatable setting of worm both ends difference is on the supporting shoe, worm and worm wheel meshing, the rotatable second pivot that is provided with in outer box body outside, second pivot one end run through the supporting shoe of outer box body and one side and with worm fixed connection, fixed mounting has the second gear in the second pivot, the second gear is located outer box body, piston rod tip fixed mounting has the rack, rack and second gear meshing, outer box body top both sides are all seted up slottedly, outer box body top is equipped with the apron, the equal fixed mounting in apron bottom both sides has the picture peg, the picture peg can be inserted respectively and establish in the groove.

Preferably, the shell is internally provided with a quick braking mechanism, the quick braking mechanism comprises a brake wheel, the brake wheel is sleeved on an output shaft of the motor, the brake wheel is positioned below the partition plate, the bottom in the shell is rotatably provided with two lever shafts which are distributed at intervals, the two lever shafts are respectively arranged at two sides of the motor, levers are fixedly arranged at the upper ends of the lever shafts, one ends of the opposite sides of the two levers are respectively hinged with a brake shoe, the two brake shoes are arranged in a mirror image manner, the brake shoes are respectively attached to the brake wheel, the other ends of the opposite sides of the two levers are respectively fixedly provided with a connecting sheet, the bottom in the shell is fixedly provided with two supporting plates which are distributed at intervals, third springs are respectively and fixedly arranged at the back sides of the two supporting plates, one ends of the two third springs are respectively and fixedly connected to the connecting sheet, and the third springs are in a contraction state, the distance between the lever shaft and the brake shoe is less than the distance between the lever shaft and the connecting sheet, two movable plates are arranged between the two support plates at intervals, two guide rods are arranged between the two support plates, the two guide rods penetrate through the two movable plates and are respectively arranged at the two ends of the movable plates, the two ends of the guide rods are respectively fixedly arranged on the support plates at the two sides, a bidirectional screw rod is arranged between the two support plates, the bidirectional screw rod penetrates through the two movable plates and is in threaded connection with the two movable plates, the bidirectional screw rod is positioned between the two guide rods, the two ends of the bidirectional screw rod are respectively and rotatably arranged on the support plates at the two sides, one end of the top of the lever is fixedly provided with a connecting block, the connecting block positioned at the same side is connected with the movable plates through a steel cable, a third rotating shaft is rotatably arranged at one side outside the shell, one end of the third rotating shaft penetrates through the shell and the support plates at one side and is fixedly connected with the bidirectional screw rod, the end parts of the third rotating shaft and the second rotating shaft are fixedly provided with chain wheels, and the chain wheels are driven by chains.

Preferably, the four corners of the bottom of the shell are fixedly provided with suckers.

The utility model provides a centrifugal device for genetic engineering, beneficial effect lies in: the door lock mechanism is matched with the controller, the controller controls the electric push rod to start, the electric push rod pushes the pushing block to move forwards, one end of the sleeve penetrates through the sleeve ring, and the sleeve can be clamped in the sleeve ring, so that the top door cover is limited and fixed; by arranging the power-on self-locking mechanism, when the motor is started, one end of the first screw rod is in threaded connection with the sleeve; therefore, the first screw rod and the sleeve are connected into a whole, the electric push rod cannot drive the sleeve to move, misoperation is avoided, the top door cover is opened, meanwhile, the worm and the worm gear are arranged for transmission, and the self-locking performance is achieved, so that the first screw rod cannot be separated from the sleeve through manual rotation of the first screw rod, and the top door cover cannot be opened in a centrifugal state of the device.

Drawings

FIG. 1 is a schematic structural diagram of a centrifugal apparatus for genetic engineering according to the present invention.

FIG. 2 is a schematic structural diagram of a centrifugal apparatus for genetic engineering according to the present invention.

FIG. 3 is a third schematic structural diagram of a centrifugal apparatus for genetic engineering according to the present invention.

FIG. 4 is a sectional view of the centrifugal apparatus for genetic engineering according to the present invention.

FIG. 5 is a partially enlarged sectional view of a door lock mechanism of a centrifugal device for genetic engineering according to the present invention.

FIG. 6 is an enlarged schematic view of the position A in FIG. 4 of the centrifugal apparatus for genetic engineering according to the present invention.

FIG. 7 is an enlarged sectional view of a PTC heating element of a centrifugal apparatus for genetic engineering according to the present invention.

FIG. 8 is an enlarged schematic view of a quick braking mechanism of a centrifugal device for genetic engineering according to the present invention.

In the figure: the device comprises a shell 1, a motor 2, a partition plate 3, a shaft sleeve 4, an angle rotary head 5, a lead 6, a top door cover 7, a handle 8, a U-shaped plate 9, a sleeve 10, a wafer 11, a first spring 12, a sliding chute 13, a clamping groove 14, a slide block 15, a clamping block 16, a pushing block 17, an electric push rod 18, a controller 19, a lantern ring 20, an outer box 21, a PTC heating body 22, a cylinder sleeve 23, a piston 24, heat-sensitive gas 25, a slideway 26, a movable block 27, a second spring 28, a piston rod 29, a vertical plate 30, a spline 31, a first screw 32, a second screw 33, a supporting block 34, a worm 35, a second rotating shaft 36, a second gear 37, a rack 38, a brake wheel 39, a supporting plate 40, a lever shaft 41, a lever 42, a brake shoe 43, 44, a third spring 45, a movable plate connecting sheet 46, a guide rod 47, a bidirectional screw 48, a connecting block 49, a steel cable 50, a, A cover plate 56, a plug plate 57, a first gear 58, a worm wheel 59 and a first rotating shaft 60.

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.

Example 1:

referring to fig. 1-8, a centrifugal device for genetic engineering, comprising a housing 1, a partition plate 3 is arranged in the housing 1, the outer side walls of the partition plate 3 are respectively and fixedly installed on the inner side walls of the housing 1, an axle sleeve 4 is installed on the top of the partition plate 3, a motor 2 is fixedly installed on the bottom of the housing 1, an output shaft of the motor 2 penetrates through the axle sleeve 4 and is rotatably installed in the axle sleeve 4, an angle turning head 5 is arranged in the housing 1, the bottom of the angle turning head 5 is fixedly installed at the top end part of the output shaft of the motor 2, the centrifugal device further comprises a lead 6, the lead 6 penetrates through the housing 1 and is electrically connected with the motor 2, a top door cover 7 is hinged on one side of the top of the housing 1, a handle 8 is fixedly installed on one side of the top door cover 7, a door lock mechanism is arranged in the housing 1 and comprises a U-shaped plate 9, the U-shaped plate 9 is fixedly installed on the upper end of one side of the housing 1, a sleeve 10 is arranged in the U-shaped plate 9, and two ends of the sleeve 10 respectively penetrate through the side walls of the housing 1, the sleeve 10 is sleeved with a wafer 11, the wafer 11 is fixedly connected with the sleeve 10, the wafer 11 is positioned in a U-shaped plate 9, the sleeve 10 is sleeved with a first spring 12, two ends of the first spring 12 are respectively and fixedly connected with the side walls of the wafer 11 and the shell 1, two sides in the U-shaped plate 9 are respectively provided with a chute 13, the bottom in the chute 13 is respectively provided with a clamping groove 14, two sides of the wafer 11 are respectively and fixedly provided with a slider 15, the sliders 15 are respectively and slidably arranged in the chutes 13, the bottom of the slider 15 is respectively and fixedly provided with a clamping block 16, the clamping blocks 16 are respectively and slidably arranged in the clamping grooves 14, the bottom of the wafer 11 is respectively and fixedly provided with a pushing block 17, one side in the shell 1 is fixedly provided with an electric push rod 18, the output end of the electric push rod 18 is fixedly connected with one side of the pushing block 17, the shell 1 is externally and fixedly provided with a controller 19, the electric push rod 18 is in signal connection with the controller 19, a lantern ring 20 is fixedly arranged in the middle of one side of the top door cover 7. By arranging the partition board 3, sample liquid can be prevented from leaking to enter the motor 2 below the partition board 3, by arranging the door lock mechanism, when the device works, according to the safety operation specification of the centrifugal machine, the top door cover 7 is firstly closed, then the motor 2 is started, the centrifugal tube is placed in the angle turning head 5 according to the balance principle, the lead 6 is connected with a power supply, an operator firstly starts the controller 19, the controller 19 controls the electric push rod 18 to start, the electric push rod 18 pushes the push block 17 to move forwards, so that the wafer 11 moves towards the direction close to the angle turning head 5, the first spring 12 stretches, the sleeve 10 also synchronously moves towards the direction close to the angle turning head 5, at the moment, the top door cover 7 can be closed, and then the controller 19 controls the electric push rod 18 to restore to the initial position, so that one end of the sleeve 10 penetrates through the sleeve ring 20, the first spring 12 restores, the sleeve 10 can be clamped in the sleeve ring 20, and further limit and fix the top door cover 7, after the top door cover 7 is closed, the controller 19 controls the motor 2 to start and drives the angle head 5 to rotate for centrifugation, after centrifugation is finished, the controller 19 controls the motor 2 to stop rotating, after the angle head 5 stops rotating, the controller 19 controls the electric push rod 18 to start and drives the sleeve 10 to move, so that the top door cover 7 can be opened, and then the controller 19 controls the electric push rod 18 to start and drives the sleeve 10 to return to the original position; by arranging the first spring 12, when the door lock mechanism fails, the electric push rod 18 cannot make the sleeve 10 unable to move, so that the first spring 12 can keep the sleeve 10 in the original position all the time, that is, the sleeve 10 can block the lantern ring 20 of the top door cover 7 and cannot close the top door cover 7, and therefore, an operator can avoid the work of starting the centrifugal device under the condition of the failure of the door lock mechanism.

The motor 2 is a carbon brush-free variable frequency motor, is low in noise, avoids high-frequency noise generated by carbon brush friction, can be used in a sterile and dust-free laboratory required by specific sample separation due to no carbon powder pollution, and the angle rotating head 5 is made of carbon fibers, is large in capacity, light in weight and strong in corrosion resistance, has the advantages of small vertical rotating head settling distance, large longitudinal section area and short separation time due to the fact that the angle rotating head 5 is designed with a small inclination angle, and is particularly suitable for separating plasmid DNA and RNA; the equal fixed mounting in casing 1 bottom four corners position has sucking disc 54, and the device relies on dead weight and atmospheric pressure and also can make sucking disc 54 adsorb the holding surface through artifical casing 1 of pushing down to the device during operation is hugged closely and is supported more steadily with the holding surface.

Example 2:

referring to fig. 1-8, as another preferred embodiment of the present invention, the difference from embodiment 1 is that, an external side of the casing 1 is provided with an energizing self-locking mechanism, the energizing self-locking mechanism includes an outer casing 21, one side and an upper end of the outer casing 21 are open, the outer casing 21 is fixedly installed on the external side of the casing 1, a PTC heating element 22 is arranged in the outer casing 21, the PTC heating element 22 is in a sleeve shape, one end of the PTC heating element 22 is fixedly installed on the casing 1, the PTC heating element 22 is electrically connected with an external power supply through a wire 6, a cylinder sleeve 23 is inserted in the PTC heating element 22, one end of the cylinder sleeve 23 is fixedly installed on the casing 1, the outer side wall of the cylinder sleeve 23 is attached to the PTC heating element 22, the cylinder sleeve 23 is made of aluminum alloy, a piston 24 is arranged in the cylinder sleeve 23, a heat-sensitive gas 25 is filled in the cylinder sleeve 23, both sides of the cylinder sleeve 23 are provided with slide ways 26, both sides of the piston 24 are fixedly installed with movable blocks 27, the movable blocks 27 are respectively arranged in the slide ways 26 in a sliding manner, the slide ways 26 are respectively internally provided with second springs 28, two ends of each second spring 28 are respectively and fixedly connected to the inner side wall of the slide way 26 and the movable blocks 27, the center of one end of the piston 24 is fixedly provided with a piston rod 29, the bottom in the outer box body 21 is fixedly provided with two vertical plates 30 which are distributed at intervals, a spline 31 is arranged between the two vertical plates 30, one end of the spline 31 is fixedly provided with a first screw 32, one end of the first screw 32 penetrates through the vertical plate 30 at one side and is in threaded connection with the vertical plate 30, the first screw 32 can be in threaded connection with the sleeve 10, the other end of the spline 31 is fixedly provided with a second screw 33, one end of the second screw 33 penetrates through the vertical plate 30 at the other side and is in threaded connection with the vertical plate 30, a first rotating shaft 60 is arranged between the two vertical plates 30, two ends of the first rotating shaft 60 are respectively and rotatably arranged on the vertical plates 30 at two sides, a first gear 58 is fixedly arranged on the first rotating shaft 60, the first gear 58 is engaged with the spline 31, one end of the first rotating shaft 60 penetrates through the vertical plate 30, a worm wheel 59 is fixedly mounted at the end part of the first rotating shaft 60, two supporting blocks 34 which are distributed at intervals are fixedly mounted on the vertical plate 30 at one side, a worm 35 is arranged between the two supporting blocks 34, two ends of the worm 35 are respectively and rotatably arranged on the supporting blocks 34, the worm 35 is engaged with the worm wheel 59, a second rotating shaft 36 is rotatably arranged at the outer side of the outer box body 21, one end of the second rotating shaft 36 penetrates through the outer box body 21 and the supporting blocks 34 at one side and is fixedly connected with the worm 35, a second gear 37 is fixedly mounted on the second rotating shaft 36, the second gear 37 is positioned in the outer box body 21, a rack 38 is fixedly mounted at the end part of the piston rod 29, the rack 38 is engaged with the second gear 37, both sides of the top part of the outer box body 21 are respectively provided with a groove 55, a cover plate 56 is arranged at the top end of the outer box body 21, and both sides of the bottom part of the cover plate 56 are respectively and are fixedly mounted with inserting plates 57, the inserting plates 57 can be respectively inserted into the grooves 55, and the cover plate 56 can play a role in protecting mechanisms in the power-on self-locking mechanism; by arranging the power-on self-locking mechanism, the PTC heating element 22 and the motor 2 are kept powered on and powered off synchronously when working, when the motor 2 is started, the temperature of the PTC heating element rises rapidly and efficiently transfers heat to the cylinder sleeve 23, the temperature of the cylinder sleeve 23 rises and transfers the heat to the thermosensitive gas 25 in the cylinder sleeve 23, the thermosensitive gas 25 is heated to expand rapidly and push the piston 24 and the piston rod 29 to move outwards along the direction of the slideway 26, at the moment, the second spring 28 contracts, the piston rod 29 drives the rack 38 to move, the rack 38 drives the second gear 37 to rotate, the second gear 37, the second rotating shaft 36 and the worm 35 are integrally arranged, so that the worm 35 rotates and drives the worm wheel 59 to rotate, the worm wheel 59, the first rotating shaft 60 and the first gear 58 are integrally arranged, so that the first gear 58 rotates and drives the spline 31 to rotate, and the spline 31, the first screw 32 and the second screw 33 are integrally arranged, so that the first screw 32 is rotated and one end of the first screw 32 is screwed into the casing 10 when the displacement of the piston 24 and the piston rod 29 is maximized; therefore, the first screw 32 is connected with the sleeve 10 into a whole, at this time, if the controller 19 is started to start the electric push rod 18 to work due to misoperation, the electric push rod 18 cannot drive the sleeve 10 to move, so that the top door cover 7 is prevented from being opened due to misoperation, meanwhile, the worm 35 and the worm wheel 59 are arranged for transmission, and the self-locking property is realized, so that the first screw 32 cannot be separated from the sleeve 10 due to the fact that the first screw 32 is manually rotated, and the top door cover 7 cannot be opened in a centrifugal state of the device; when the motor 2 is powered off, the temperature of the PTC heating element drops rapidly, the volume of the heat-sensitive gas 25 decreases, the second spring 28 is restored from the contracted state, the second spring 28 pushes the movable block 27 and moves the piston 24 until the piston 24 returns to the initial state, and the first screw 32 also rotates reversely and disengages from the sleeve 10, so that the electric push rod 18 can be controlled by the controller 19 and the top door cover 7 can be opened.

Because the rotation speed of the angle rotor 5 is fast after the centrifugal force of the device is applied and a certain time is needed for waiting for the rotation speed of the angle rotor 5 to be reduced to zero, the angle rotor 5 can be quickly braked in consideration of the fact that the angle rotor 5 can be quickly braked, thereby saving time, the shell 1 is internally provided with a quick braking mechanism which comprises a brake wheel 39, the brake wheel 39 is sleeved on an output shaft of the motor 2, the brake wheel 39 is positioned below the clapboard 3, the bottom of the shell 1 is rotatably provided with two lever shafts 41 which are distributed at intervals, the two lever shafts 41 are respectively arranged at two sides of the motor 2, the upper ends of the lever shafts 41 are respectively and fixedly provided with a lever 42, one end of the opposite sides of the two levers 42 is respectively hinged with a brake shoe 43, the two brake shoes 43 are arranged in a mirror image manner, the brake shoes 43 are respectively attached to the brake wheel 39, the other ends of the opposite sides of the two levers 42 are respectively and fixedly, one end of each of the two third springs 45 is fixedly connected to the connecting plate 44, the third springs 45 are in a contracted state, the distance from the lever shaft 41 to the brake shoe 43 is less than the distance from the lever shaft 41 to the connecting plate 44, two movable plates 46 are arranged between the two support plates 40 at intervals, two guide rods 47 are arranged between the two support plates 40, the two guide rods 47 penetrate through the two movable plates 46 and are respectively arranged at the two ends of the movable plates 46, the two ends of the guide rods 47 are respectively and fixedly installed on the support plates 40 at the two sides, a bidirectional screw 48 is arranged between the two support plates 40, the bidirectional screw 48 penetrates through the two movable plates 46 and is in threaded connection with the two movable plates 46, the bidirectional screw 48 is arranged between the two guide rods 47, the two ends of the bidirectional screw 48 are respectively and rotatably installed on the support plates 40 at the two sides, one end of the top of the lever 42 is fixedly installed with a connecting block 49, the connecting block 49 positioned at the same side is connected with the movable plates 46 through a steel cable 50, a third rotating shaft 51 is rotatably disposed at one side outside the casing 1, one end of the third rotating shaft 51 penetrates through the casing 1 and the supporting plate 40 at one side and is fixedly connected with a bidirectional screw 48, chain wheels 52 are fixedly mounted at the end of the third rotating shaft 51 and the end of the second rotating shaft 36, the two chain wheels 52 are driven by a chain 53, in the centrifugal process, when the motor 2 in the device starts to rotate, the second rotating shaft 36 starts to rotate in the energized self-locking mechanism, the second rotating shaft 36 and the chain wheel 52 at one side are integrally disposed, the chain wheel 52 at one side rotates and drives the chain wheel 52 at the other side to rotate through the chain 53, the chain wheel 52 at the other side, the third rotating shaft 51 and the bidirectional screw 48 are integrally disposed, so that the bidirectional screw 48 rotates and cooperates with the guide rod 47 to make the two movable plates 46 move close to each other, and the two movable plates 46 drive the end portions of the levers 42 at both sides to move toward the movable plates 46 through the steel cable 50, the pull force of the steel cable 50 drives the lever 42 to rotate around the lever shaft 41, and overcomes the elastic force of the third spring 45, so that the brake shoe 43 leaves the brake wheel 39, thereby the motor 2 normally rotates, when the motor 2 is powered off, the second rotating shaft 36 reversely rotates, similarly, the brake shoe 43 is attached to the brake wheel 39, and the third spring 45 returns to the contraction state under the initial state, the elastic force of the third spring 45 is applied to one end part of the lever 42, so that the brake shoe 43 at the other end part of the lever 42 is tightly attached to the brake wheel 39, thereby playing a braking effect on the rotating shaft of the motor 2, and therefore, the device can realize quick braking after being stopped.

The working principle is as follows: when the device works, according to the safety operation specification of the centrifuge, the top door cover 7 is firstly closed to start the motor 2, the centrifuge tube is placed in the angle rotary head 5 according to the balance principle, the lead 6 is connected with the power supply, an operator firstly starts the controller 19, controls the electric push rod 18 to start through the controller 19, the electric push rod 18 pushes the push block 17 to move forwards, so that the wafer 11 moves towards the direction close to the angle rotary head 5 and the first spring 12 is stretched, the sleeve 10 also moves towards the direction close to the angle rotary head 5 synchronously, at the moment, the top door cover 7 can be closed, then the electric push rod 18 is controlled to recover to the initial position through the controller 19, so that one end of the sleeve 10 penetrates through the lantern ring 20, the first spring 12 recovers, the sleeve 10 can be clamped in the lantern ring 20, so as to limit and fix the top door cover 7, after the top door cover 7 is closed, the controller 19 controls the motor 2 to start and drive the angle rotary head 5 to rotate for centrifugation, after the centrifugation is finished, similarly, the controller 19 controls the motor 2 to stop rotating, after the angle head 5 stops rotating, the controller 19 controls the electric push rod 18 to start and drive the sleeve 10 to move, so that the top door cover 7 can be opened, and then the controller 19 controls the electric push rod 18 to start and drive the sleeve 10 to return to the original position.

By arranging the power-on self-locking mechanism, the PTC heating element 22 and the motor 2 are kept powered on and powered off synchronously when working, when the motor 2 is started, the temperature of the PTC heating element rises rapidly and efficiently transfers heat to the cylinder sleeve 23, the temperature of the cylinder sleeve 23 rises and transfers the heat to the thermosensitive gas 25 in the cylinder sleeve 23, the thermosensitive gas 25 is heated to expand rapidly and push the piston 24 and the piston rod 29 to move outwards along the direction of the slideway 26, at the moment, the second spring 28 contracts, the piston rod 29 drives the rack 38 to move, the rack 38 drives the second gear 37 to rotate, the second gear 37, the second rotating shaft 36 and the worm 35 are integrally arranged, so that the worm 35 rotates and drives the worm wheel 59 to rotate, the worm wheel 59, the first rotating shaft 60 and the first gear 58 are integrally arranged, so that the first gear 58 rotates and drives the spline 31 to rotate, and the spline 31, the first screw 32 and the, so that the first screw 32 is rotated and one end of the first screw 32 is screwed into the casing 10 when the displacement of the piston 24 and the piston rod 29 is maximized; therefore, the first screw 32 is connected with the sleeve 10 into a whole, at this time, if the controller 19 is started to start the electric push rod 18 to work due to misoperation, the electric push rod 18 cannot drive the sleeve 10 to move, so that the top door cover 7 is prevented from being opened due to misoperation, meanwhile, the worm 35 and the worm wheel 59 are arranged for transmission, and the self-locking property is realized, so that the first screw 32 cannot be separated from the sleeve 10 due to the fact that the first screw 32 is manually rotated, and the top door cover 7 cannot be opened in a centrifugal state of the device; when the motor 2 is powered off, the temperature of the PTC heating element rapidly drops, the volume of the thermosensitive gas 25 is reduced, the second spring 28 is recovered from a contraction state, the second spring 28 pushes the movable block 27 and enables the piston 24 to move until the piston 24 returns to an initial state, the first screw 32 also rotates reversely and is separated from the sleeve 10, and therefore the electric push rod 18 can be controlled by the controller 19 and the top door cover 7 can be opened; in the centrifugal process, when the motor 2 starts to start in the device, because the second rotating shaft 36 starts to rotate in the power-on self-locking mechanism, the second rotating shaft 36 is integrally arranged with the chain wheel 52 on one side, the chain wheel 52 on one side rotates and drives the chain wheel 52 on the other side to rotate through the chain 53, the chain wheel 52 on the other side, the third rotating shaft 51 and the bidirectional screw 48 are integrally arranged, so that the bidirectional screw 48 rotates and cooperates with the guide rod 47 to make the two movable plates 46 move close to each other, so that the two movable plates 46 drive the end portions of the levers 42 on both sides to move towards the movable plates 46 through the steel cable 50, the pull force of the steel cable 50 drives the levers 42 to rotate around the lever shafts 41, and overcomes the elastic force of the third spring 45 to make the brake shoe 43 leave the brake wheel 39, so that the motor 2 normally rotates, when the motor 2 is powered off, the second rotating shaft 36 reversely rotates, and similarly, the brake shoe 43 is attached to the brake wheel 39, and the third spring 45 returns to the contracted state in the initial state, the elastic force of the third spring 45 is applied to one end of the lever 42 to make the brake shoe 43 at the other end of the lever 42 closely contact with the brake wheel 39, thereby providing a braking effect on the rotating shaft of the motor 2, and realizing rapid braking after the device is stopped.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a centrifugal device for genetic engineering, includes casing (1), its characterized in that, be equipped with baffle (3) in casing (1), baffle (3) lateral wall fixed mounting is on casing (1) inside wall respectively, axle sleeve (4) are installed at baffle (3) top, bottom fixed mounting has motor (2) in casing (1), the output shaft of motor (2) runs through axle sleeve (4) and rotatable the installation in axle sleeve (4), be equipped with angle turn (5) in casing (1), angle turn (5) bottom fixed mounting still includes wire (6) at the output shaft top portion of motor (2), wire (6) run through casing (1) and with motor (2) electric connection, casing (1) top one side articulates there is top door closure (7), top door closure (7) top one side fixed mounting has handle (8), be equipped with lock mechanism in casing (1), lock mechanism includes U-shaped plate (9), U-shaped plate (9) fixed mounting is in casing (1) one side upper end, be equipped with sleeve pipe (10) in U-shaped plate (9), the lateral wall that U-shaped plate (9) and casing (1) run through respectively at sleeve pipe (10) both ends, the cover is equipped with disk (11) on sleeve pipe (10), disk (11) and sleeve pipe (10) fixed connection, disk (11) are located U-shaped plate (9), the cover is equipped with first spring (12) on sleeve pipe (10), fixed connection is respectively on the lateral wall of disk (11) and casing (1) in first spring (12) both ends, spout (13) have all been seted up to both sides in U-shaped plate (9), draw-in groove (14) have all been seted up to bottom in spout (13), disk (11) both sides all fixed mounting has slider (15), slider (15) slide respectively and set up in spout (13), the equal fixed mounting in slider (15) bottom has fixture block (16), fixture block (16) slide respectively and set up in draw-in groove (14), disk (11) bottom fixed mounting has promotion piece (17), one side fixed mounting has electric putter (18) in casing (1), the output fixed connection of electric putter (18) is in the one side that promotes piece (17), casing (1) outer fixed mounting has controller (19), electric putter (18) signal connection is to controller (19), controller (19) are used for controlling electric putter (18), top door cover (7) one side middle part fixed mounting has lantern ring (20).

2. The centrifugal device for genetic engineering according to claim 1, wherein a power-on self-locking mechanism is arranged outside the casing (1), the power-on self-locking mechanism comprises an outer casing (21), one side and the upper end of the outer casing (21) are open, the outer casing (21) is fixedly installed outside the casing (1), a PTC heating element (22) is arranged in the outer casing (21), the PTC heating element (22) is in a sleeve shape, one end of the PTC heating element (22) is fixedly installed on the casing (1), the PTC heating element (22) is electrically connected with an external power supply through a wire (6), a cylinder sleeve (23) is inserted in the PTC heating element (22), one end of the cylinder sleeve (23) is fixedly installed on the casing (1), the outer side wall of the cylinder sleeve (23) is attached to the PTC heating element (22) and the cylinder sleeve (23) is made of aluminum alloy, the improved cylinder sleeve is characterized in that a piston (24) is arranged in the cylinder sleeve (23), thermosensitive gas (25) is filled in the cylinder sleeve (23), slide ways (26) are respectively arranged on two sides in the cylinder sleeve (23), movable blocks (27) are respectively fixedly arranged on two sides of the piston (24), the movable blocks (27) are respectively arranged in the slide ways (26) in a sliding manner, second springs (28) are respectively arranged in the slide ways (26), two ends of each second spring (28) are respectively and fixedly connected to the inner side wall of each slide way (26) and the corresponding movable block (27), a piston rod (29) is fixedly arranged at the center of one end of each piston (24), two vertical plates (30) distributed at intervals are fixedly arranged at the bottom in the outer box body (21), a spline (31) is arranged between the two vertical plates (30), a first screw rod (32) is fixedly arranged at one end of each spline (31), one end of each first screw rod (32) penetrates through the corresponding vertical plate (30) on one side and is in threaded connection with the corresponding vertical plate (30), but first screw rod (32) threaded connection is in sleeve pipe (10), spline (31) other end fixed mounting has second screw rod (33), second screw rod (33) one end run through riser (30) of opposite side and with riser (30) threaded connection, two be equipped with first pivot (60) between riser (30), rotatable setting is respectively on riser (30) of both sides in first pivot (60) both ends, fixed mounting has first gear (58) on first pivot (60), first gear (58) and spline (31) meshing, riser (30) are run through to first pivot (60) one end, first pivot (60) tip fixed mounting has worm wheel (59), be located one side fixed mounting has two supporting shoe (34) of interval distribution on riser (30), be equipped with worm (35) between two supporting shoe (34), the two ends of the worm (35) are respectively and rotatably arranged on the supporting block (34), the worm (35) is meshed with the worm wheel (59), a second rotating shaft (36) is rotatably arranged at the outer side of the outer box body (21), one end of the second rotating shaft (36) penetrates through the outer box body (21) and the supporting block (34) at one side and is fixedly connected with the worm (35), a second gear (37) is fixedly arranged on the second rotating shaft (36), the second gear (37) is positioned in the outer box body (21), a rack (38) is fixedly arranged at the end part of the piston rod (29), the rack (38) is meshed with the second gear (37), the two sides of the top of the outer box body (21) are both provided with grooves (55), the top end of the outer box body (21) is provided with a cover plate (56), both sides of the bottom of the cover plate (56) are fixedly provided with inserting plates (57), and the inserting plates (57) can be respectively inserted into the grooves (55).

3. The centrifugal device for genetic engineering according to claim 1, wherein a quick brake mechanism is arranged in the housing (1), the quick brake mechanism comprises a brake wheel (39), the brake wheel (39) is sleeved on an output shaft of the motor (2), the brake wheel (39) is positioned below the partition plate (3), two lever shafts (41) which are distributed at intervals are rotatably arranged at the bottom in the housing (1), the two lever shafts (41) are respectively arranged at two sides of the motor (2), a lever (42) is fixedly arranged at the upper end of each lever shaft (41), brake shoes (43) are hinged at one end of each of the two opposite sides of the two levers (42), the two brake shoes (43) are arranged in a mirror image manner, the brake shoes (43) are both attached to the brake wheel (39), and a connecting plate (44) is fixedly arranged at the other end of each of the two opposite sides of the two levers (42), the bottom of the shell (1) is fixedly provided with two supporting plates (40) which are distributed at intervals, the two supporting plates (40) are fixedly provided with third springs (45) towards the back side, one ends of the two third springs (45) are respectively and fixedly connected to a connecting sheet (44), the third springs (45) are in a contraction state, the distance from a lever shaft (41) to a brake shoe (43) is smaller than the distance from a lever shaft (41) to the connecting sheet (44), two movable plates (46) which are distributed at intervals are arranged between the two supporting plates (40), two guide rods (47) are arranged between the two supporting plates (40), the two guide rods (47) penetrate through the two movable plates (46) and are respectively arranged at the two ends of the movable plates (46), the two ends of each guide rod (47) are respectively and fixedly arranged on the supporting plates (40) at the two sides, and a two-way screw rod (48) is arranged between the two supporting plates (40), the bidirectional screw rod (48) penetrates through the two movable plates (46) and is in threaded connection with the two movable plates (46), the bidirectional screw rod (48) is positioned between the two guide rods (47), two ends of the bidirectional screw rod (48) are respectively and rotatably arranged on the support plates (40) at two sides, connecting blocks (49) are fixedly arranged at one end of the top of the lever (42), the connecting blocks (49) positioned at the same side are connected with the movable plate (46) through steel cables (50), a third rotating shaft (51) is rotatably arranged at one side outside the shell (1), one end of the third rotating shaft (51) penetrates through the shell (1) and the supporting plate (40) at one side and is fixedly connected with the bidirectional screw rod (48), and chain wheels (52) are fixedly mounted at the end parts of the third rotating shaft (51) and the second rotating shaft (36), and the two chain wheels (52) are driven by a chain (53).

4. The centrifugal device for genetic engineering according to claim 1, wherein suction cups (54) are fixedly installed at four corners of the bottom of the housing (1).