CN214453641U

CN214453641U - Novel move liquid vacuum generation device

Info

Publication number: CN214453641U
Application number: CN202120238728.3U
Authority: CN
Inventors: 谢晓鸿; 谢时灵; 陈孝荣
Original assignee: Shandong Shidasi Medical Technology Co ltd; Shandong Stars Bioindustry Co ltd
Current assignee: Shandong Shidasi Medical Technology Co ltd; Shandong Stars Bioindustry Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-10-22
Anticipated expiration: 2031-01-28

Abstract

The utility model provides a novel move liquid vacuum generating device, includes power module, transmission module, sampler module and bottom plate, power module connects transmission module, transmission module includes lead screw and lead screw slider, the lead screw slider cover is on the lead screw, the lead screw slider passes through the connecting plate and is connected with sampler module, sampler module includes glass pipe and piston rod, the piston rod rear portion is connected with the connecting plate of lead screw slider department, the anterior concertina movement in the glass pipe of piston rod can form the liquid sample of negative pressure vacuum absorption. The liquid-transfering vacuum generating device adopts the threaded screw rod to drive the piston rod to move in a telescopic mode, so that the purpose of absorbing or releasing a sample is achieved, the transmission module and the sampler module are transversely arranged side by side, and the occupied space is effectively reduced.

Description

Novel move liquid vacuum generation device

Technical Field

The utility model relates to a liquid sample analysis field, concretely relates to novel move liquid vacuum generator.

Background

Liquid samples often require multiple processes in which to perform the analysis, and the conversion between different processes requires the transfer and handling of the liquid sample.

At present, liquid samples are transferred and processed mostly by using a piston to move in a closed container to generate vacuum to suck the samples, the direct manual operation of an injector to transfer and process the liquid samples wastes time and labor, and the sample pollution is possibly caused by improper operation. The vacuum generation module in the market generally adopts gears to transmit power in order to improve precision, so that the structure is complex, the cost is high, the space occupation is large, the waste of the space in the analysis equipment is caused, and the gears can also generate noise when in rotary meshing to interfere the working state of an analyst.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned automatic liquid module structure of moving is complicated, and is with high costs, and the space occupies greatly, can send the problem of noise, the utility model provides a novel move liquid vacuum generator, this move liquid vacuum generator adopt the screw lead screw to drive the flexible removal of piston rod to reach the purpose of absorbing or releasing the sample, screw drive occupation space is little, and the noise is little, and operation precision is not less than gear drive.

The technical scheme of the utility model as follows:

the utility model provides a novel move liquid vacuum generator, includes power module, drive module, sampler module and bottom plate, power module connects drive module, drive module includes lead screw slider, lead screw and slider piston rod connecting plate, the lead screw slider cover is on the lead screw, the lead screw slider passes through slider piston rod connecting plate and is connected with sampler module, sampler module includes glass pipe and piston rod, the slider piston rod connecting plate of piston rod rear portion and lead screw slider department is connected, the anterior concertina movement of piston rod in the glass pipe can form the negative pressure vacuum and absorb liquid sample.

The novel move liquid vacuum generating device, power module includes motor and motor fixed plate, the motor fixed plate includes L type bent plate, motor fixed plate one side and bottom plate fixed connection, the one side is connected with the motor is perpendicular, the one side center of being connected with the motor is provided with the round hole perpendicularly, the output shaft of motor stretches out from the hole. The motor is connected with the console, and the console sends out signals to control the rotation direction and the rotation speed of the motor.

As above a novel move liquid vacuum generator, drive module includes shaft coupling, lead screw slider, lead screw, slider piston rod connecting plate and lead screw fixed block, shaft coupling one end and the output shaft of motor, the other end is connected with the lead screw, be provided with the screw on the lead screw, lead screw slider and slider piston rod connecting plate all overlap on the lead screw, lead screw slider and lead screw threaded connection, lead screw slider one side and slider piston rod connecting plate fixed connection, the inside through-hole that is equipped with of slider piston rod connecting plate, the through-hole size is greater than the lead screw external dimension, the lead screw end is rotated with the lead screw fixed block and is connected, the lead screw fixed block is fixed on the bottom plate. The screw transmission occupies small space, has low noise, and has operation precision not lower than that of gear transmission.

Furthermore, the slider piston rod connecting plate comprises a rectangular block, and the slider piston rod connecting plate is perpendicular to the bottom plate. The screw rod sliding block can convert the rotary motion of the screw rod into the up-and-down motion of the sliding block piston rod connecting plate. A guide bearing perpendicular to the connecting plate of the sliding block piston rod is arranged below the connecting plate of the sliding block piston rod, and a photoelectric sensing piece is arranged above the sliding block.

Furthermore, a slide way is arranged on the bottom plate below the guide bearing and comprises a strip-shaped recess, and the width of the slide way is the same as the diameter of the guide bearing. The guide bearing moves in the slide way, and the sliding block piston rod connecting plate is prevented from rotating and displacing along with the screw rod.

According to the novel liquid-transfering vacuum generating device, the glass tube is parallel to the screw rod, and the transmission module and the sampler module are transversely arranged side by side, so that the occupied space is effectively reduced. The glass tube head is provided with first sampler fixed block, and the afterbody is provided with the second sampler fixed block, first sampler fixed block and second sampler fixed block are interior to have worn the glass tube.

Further, a feeder joint is arranged at the head of the glass tube, and a hose is connected to the feeder joint.

Furthermore, a limiting photoelectric device is arranged above the second sampler fixing block.

Furthermore, a gap which can enable the photoelectric sensing piece to be inserted is arranged in the middle of the limiting photoelectric device. When a program is wrong or an operator makes a mistake, the sliding block piston rod connecting plate drives the piston rod to feed the piston rod to be tightly attached to the glass tube, if the motor does not stop rotating, the photoelectric sensing sheet can be inserted into a gap in the middle of the limiting photoelectric sensor, the limiting photoelectric sensor can send a signal to the console to emergency brake the motor, and equipment is prevented from being damaged.

The beneficial effects of the utility model reside in that:

1. the utility model discloses move liquid vacuum generator, move liquid vacuum generator adopts the screw lead screw to drive the flexible removal of piston rod to reach the purpose of absorption or release sample, transmission module and sampler module adopt and transversely arrange side by side, and effective reduction space occupies, and screw drive occupation space is little, and the noise is little, and operation precision is not lower than gear drive.

2. The utility model discloses move liquid vacuum generator, be provided with urgent braking switch, mistake or operating personnel error appear in the procedure, result in slider piston rod connecting plate drives the piston rod and feeds when hugging closely the glass pipe, the motor still does not have stall words, the photoelectric sensing piece can be inserted in the middle gap of spacing photoelectricity, spacing photoelectricity can the signals prevent that equipment from being damaged for the urgent braking motor of control cabinet.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is a schematic structural view of a novel liquid-transferring vacuum generating device of the present invention;

fig. 2 is a schematic structural view of a second sampler fixing block of the present invention;

FIG. 3 is a schematic view of the glass tube structure of the present invention;

fig. 4 is a schematic view of a feeder joint structure of the present invention;

fig. 5 is a schematic view of the piston rod structure of the present invention;

fig. 6 is a schematic diagram of the limiting photoelectric structure of the present invention;

FIG. 7 is a schematic view of the structure of the connecting plate of the sliding block piston rod, the photoelectric sensing sheet and the guiding bearing of the present invention;

fig. 8 is a schematic structural view of the screw rod slider of the present invention;

FIG. 9 is a schematic view of the bottom plate structure of the present invention;

fig. 10 is a schematic structural view of the motor fixing plate of the present invention;

fig. 11 is a schematic view of the structure of the motor of the present invention.

The components represented by the reference numerals in the figures are:

1. the sampler comprises a power module, 11, a motor, 12, a motor fixing plate, 2, a transmission module, 21, a coupler, 22, a screw rod sliding block, 23, a photoelectric sensing piece, 24, a screw rod, 25, a screw rod fixing block, 26, a sliding block piston rod connecting plate, 261, a guide bearing, 3, a sampler module, 31, a feeder joint, 311, a sealing element, 312, a hose, 32, a first sampler fixing block, 33, a glass tube, 331, a limiting piece, 332, a buffering piece, 34, a second sampler fixing block, 341, a limiting hole, 35, a piston rod, 351, a piston head, 352, a connecting disc, 36, limiting photoelectricity, 4, a bottom plate, 41 and a slide way.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Examples

Referring to fig. 1, a novel move liquid vacuum generating device, including power module 1, transmission module 2, sampler module 3 and bottom plate 4, power module 1 connects transmission module 2, transmission module 2 includes lead screw slider 22, lead screw 24 and slider piston rod connecting plate 26, lead screw slider 22 overlaps on lead screw 24, lead screw slider 22 passes through slider piston rod connecting plate 26 and is connected with sampler module 3, sampler module 3 includes glass pipe 33 and piston rod 35, the slider piston rod connecting plate 26 of piston rod 35 rear portion and lead screw slider 22 department is connected, the anterior telescopic motion in glass pipe 33 of piston rod 35 can form the negative pressure vacuum and absorb liquid sample. The liquid-transfering vacuum generating device adopts the threaded screw rod 24 to drive the piston rod 35 to move in a telescopic way, thereby achieving the purpose of absorbing or releasing a sample.

Referring to fig. 1, the glass tube 33 is parallel to the screw rod 24, so that the transmission module 2 and the sampler module 3 are arranged side by side in the transverse direction, and the space occupation can be effectively reduced. The head of the glass tube 33 is provided with a first sampler fixing block 32, the tail of the glass tube is provided with a second sampler fixing block 34, and the glass tube 33 penetrates through the first sampler fixing block 32 and the second sampler fixing block 34.

Referring to fig. 2, a limiting hole 341 is formed in the middle of the second sampler fixing block 34, and one side of the limiting hole 341 is a long round hole and the other side is a round hole. As shown in fig. 3, the tail end of the glass tube 33 is provided with a long circular limiting member 331, which enables the sampler module 3 to be fixed on the bottom plate 4 at one side of the power module 1 through the first sampler fixing block 32 and the second sampler fixing block 34, and when the limiting hole 341 and the limiting member 331 are matched to enable the piston rod 35 to move in the glass tube 33 in a telescopic manner, the glass tube 33 will not move along with the piston rod 35.

Referring to fig. 3, a buffer member 332 is disposed around a connection portion of the glass tube 33 and the first sampler fixing block 32, and the buffer member 332 and the limiting member 331 are both made of a soft elastic rubber material, so that the glass tube 33 can be effectively prevented from being damaged in the moving process.

Referring to fig. 4, a feeder adapter 31 is disposed at the head of the glass tube 33, a sealing member 311 is disposed at the tail of the feeder adapter 31, and the sealing member 311 is made of soft rubber and has a certain elasticity, so that a good sealing performance can be achieved. A hose 312 is connected to the head of feeder adapter 31. The hose 312 is connected to the sampling tip and the like.

Referring to fig. 5, the piston head 351 made of ptfe is disposed at the head of the piston rod 35, and ptfe has hydrophobicity, is not stained with residual liquid sample, and has inactive chemical property, and is not easily reacted with the liquid sample. In addition, the polytetrafluoroethylene has a lubricating effect, so that the friction force can be effectively reduced, and unnecessary energy consumption is reduced. The tail of the piston rod 35 is provided with a connecting disc 352, and the middle of the connecting disc 352 is provided with a threaded hole which can be connected with the connecting plate 26 of the piston rod of the sliding block.

Referring to fig. 6, a limiting photoelectric device 36 is disposed above the second sampler fixing block 34.

Further, a gap into which the photoelectric sensing piece 23 can be inserted is formed in the middle of the limiting photoelectric element 36. When the slide block piston rod connecting plate 26 drives the piston rod 35 to feed to the tightly attached glass tube 33 due to a wrong program or a mistake of an operator, if the motor 11 still does not stop rotating, the photoelectric sensing sheet 23 can be inserted into a gap in the middle of the limiting photoelectric sheet 36, and the limiting photoelectric sheet 36 can send a signal to the console to emergency brake the motor 11, so that the equipment is prevented from being damaged.

Referring to fig. 1, the transmission module 2 includes a coupler 21, a lead screw slider 22, a lead screw 24, a slider piston rod connecting plate 26 and a lead screw fixing block 25, one end of the coupler 21 is connected with an output shaft of the motor 11, and the other end is connected with the lead screw 24. The coupling 21 is connected in a manner that helps to reduce excessive motor torque and avoid damaging tight parts. The lead screw 24 is provided with threads, the lead screw slider 22 and the slider piston rod connecting plate 26 are sleeved on the lead screw 24, the lead screw slider 22 is in threaded connection with the lead screw 24, one side of the lead screw slider 22 is fixedly connected with the slider piston rod connecting plate 26, a through hole is formed in the slider piston rod connecting plate 26, the size of the through hole is larger than the outer size of the lead screw 24, the tail end of the lead screw 24 is rotatably connected with the lead screw fixing block 25, the lead screw fixing block 25 is fixed on the bottom plate 4, the center of the lead screw fixing block 25 is provided with a round hole, the round hole and the inside are provided with a bearing, and the slider piston rod connecting plate 26 is sleeved on the lead screw 24. The screw transmission occupies small space, has low noise, and has operation precision not lower than that of gear transmission.

Referring to fig. 7 and 8, the slider piston rod connecting plate 26 comprises a rectangular block, and the slider piston rod connecting plate 26 is disposed perpendicular to the base plate 4. A guide bearing 261 perpendicular to the slider piston rod connecting plate 26 is arranged below the slider piston rod connecting plate 26, and a photoelectric sensing piece 23 is arranged above the slider.

Referring to fig. 9, the base plate 4 is provided with a slide 41 below the guide bearing 261, the slide 41 including an elongated recess, and the width of the slide 41 is the same as the diameter of the guide bearing 261. The guide bearing 261 moves in the slideway 41, preventing the slider piston rod connecting plate 26 from following the screw 24 to undergo rotational displacement.

Referring to fig. 10 and 11, the power module 1 includes a motor 11 and a motor fixing plate 12, the motor fixing plate 12 includes an L-shaped bent plate, one side of the motor fixing plate 12 is fixedly connected to the base plate 4, and the other side is perpendicularly connected to the motor 11, a circular hole is formed in the center of the side perpendicularly connected to the motor 11, and an output shaft of the motor 11 extends out of the hole. The motor 11 is connected with a control console, and the control console sends signals to control the rotating direction and the rotating speed of the motor 11.

When the glass tube is used, the console sends an instruction, the motor 11 rotates in the positive direction to drive the coupler 21 and the screw rod 24 to rotate in the positive direction, the screw rod 24 and the slider 22 convert the rotation motion of the screw rod 24 into the upward motion of the slider piston rod connecting plate 26, the slider piston rod connecting plate 26 drives the piston rod 35 connected to the slider piston rod connecting plate to move upward, the space in the glass tube 33 is increased and the pressure intensity is reduced to form negative pressure, and a liquid sample is sucked in. Releasing the liquid sample, operating the control console to send a signal to allow the motor 11 to rotate in the reverse direction.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A novel liquid-transfering vacuum generating device is characterized by comprising a power module (1), a transmission module (2), a sampler module (3) and a bottom plate (4), the power module (1) is connected with the transmission module (2), the transmission module (2) comprises a screw rod slide block (22), a screw rod (24) and a slide block piston rod connecting plate (26), the screw rod sliding block (22) is sleeved on the screw rod (24), the screw rod sliding block (22) is connected with the sampler module (3) through a sliding block piston rod connecting plate (26), the sampler module (3) comprises a glass tube (33) and a piston rod (35), the rear part of the piston rod (35) is connected with a slide block piston rod connecting plate (26) at the position of the screw rod slide block (22), the telescopic motion of the front part of the piston rod (35) in the glass tube (33) can form negative pressure vacuum to suck the liquid sample.

2. A novel liquid-transfering vacuum generating device according to claim 1, characterized in that, the power module (1) includes a motor (11) and a motor fixing plate (12), the motor fixing plate (12) includes an L-shaped bent plate, one side of the motor fixing plate (12) is fixedly connected with the bottom plate (4), the other side is perpendicularly connected with the motor (11), a round hole is arranged at the center of the side of the motor fixing plate (12) perpendicularly connected with the motor (11), and the output shaft of the motor (11) extends out of the round hole.

3. The novel liquid-transfering vacuum generating device according to claim 1, characterized in that, the transmission module (2) includes a shaft coupling (21), a screw rod slide block (22), a screw rod (24), a slide block piston rod connecting plate (26) and a screw rod fixing block (25), one end of the shaft coupling (21) is connected with the output shaft of the motor (11), the other end is connected with the screw rod (24), the screw rod (24) is provided with a thread, the screw rod slide block (22) and the slide block piston rod connecting plate (26) are both sleeved on the screw rod (24), the screw rod slide block (22) is in threaded connection with the screw rod (24), one side of the screw rod slide block (22) is fixedly connected with the slide block piston rod connecting plate (26), the slide block piston rod connecting plate (26) is internally provided with a through hole, the size of the through hole is larger than the outer size of the screw rod (24), the end of the screw rod (24) is rotatably connected with the fixing block (25), the screw rod fixing block (25) is fixed on the bottom plate (4).

4. A novel liquid transfer vacuum generation device according to claim 3 is characterized in that the slider piston rod connecting plate (26) comprises a rectangular block, the slider piston rod connecting plate (26) is arranged perpendicular to the bottom plate (4), a guide bearing (261) perpendicular to the slider piston rod connecting plate (26) is arranged below the slider piston rod connecting plate (26), and a photoelectric sensing piece (23) is arranged above the slider piston rod connecting plate (26).

5. A new pipetting vacuum generating device as recited in claim 4 characterized in that the bottom plate (4) is provided with a slide (41) below the guide bearing (261), the slide (41) comprising an elongated recess, the width of the slide (41) being the same as the diameter of the guide bearing (261).

6. A novel liquid-transfering vacuum generating device according to claim 1, characterized in that, the glass tube (33) is parallel to the screw rod (24), the head part is provided with a first sampler fixing block (32), the tail part is provided with a second sampler fixing block (34), and the glass tube (33) is penetrated in the first sampler fixing block (32) and the second sampler fixing block (34).

7. A new pipetting vacuum generating device as recited in claim 6 characterised in that the head of the glass tube (33) is provided with a feeder adapter (31), the feeder adapter (31) being connected with a hose (312).

8. A novel liquid-transfering vacuum generating device according to claim 7, characterized in that, a limiting photoelectric device (36) is arranged above the second sampler fixing block (34).

9. A novel liquid-transfering vacuum generating device according to claim 8, characterized in that, a gap into which the photoelectric sensing piece (23) can be inserted is arranged in the middle of the limiting photoelectric sensor (36).