CN208526660U - A kind of screw rod driving syringe pump - Google Patents

Abstract

The utility model relates to a kind of screw rods to drive syringe pump, including main vertical frame, the first driving mechanism, the second driving mechanism, rotary valve, syringe and the push rod arranged vertically, first driving mechanism is placed in the side of main vertical frame, push rod is placed in side of the main vertical frame far from the first driving mechanism, first driving mechanism is connect with push rod, and the first driving mechanism drives push rod along main vertical frame vertical shift；Second driving mechanism is placed in the upper end of the first driving mechanism, and rotary valve is placed in the top of push rod, and the second driving mechanism is connect with rotary valve；Syringe is placed in the lower end of rotary valve；Syringe is connect with rotary valve；Syringe is connect with push rod, and push rod drives the piston of syringe mobile, and syringe carries out imbibition and drain by rotary valve.Compared with the prior art, the utility model push rod constant velocity linear is displaced, and stablizes movement, the accurate at the uniform velocity sampling injection of injection；Replaceable not co-content syringe realizes that different volume liquids divide sample.

Description

A kind of screw rod driving syringe pump

Technical field

The utility model relates to liquid sampling technical field, in particular to a kind of screw rod of accurate transmission drives syringe pump.

Background technique

In clinical examination and lab analysis, it is often necessary to liquid sample and reagent are quantitatively drawn, distributed, The fluid treatment operations such as mixing, liquid volume to be treated is typically small, the accuracy and precision requirement to liquid shifting equipment It is higher.Liquid-transfering gun is able to achieve the accurate sampling of micro liquid, but still needs a large amount of manual operations, not only time-consuming to be also easy to appear Fault.

Utility model content

The purpose of the utility model is to provide a kind of screw rods to drive syringe pump, the technical problem to be solved is that: liquid-transfering gun It is able to achieve the accurate sampling of micro liquid, but still needs a large amount of manual operations, it is not only time-consuming to be also easy to appear fault.

The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of screw rod driving syringe pump, including vertical The main vertical frame of arrangement, the first driving mechanism, the second driving mechanism, rotary valve, syringe and push rod, first driving machine are set up In the side of the main vertical frame, the push rod is placed in side of the main vertical frame far from first driving mechanism, and described first The output end of driving mechanism is connect with the push rod, and the output end of first driving mechanism drives the push rod perpendicular along main vertical frame Translation is dynamic；

Second driving mechanism is placed in the upper end of first driving mechanism, and the rotary valve is placed in the upper of the push rod Side, the output end of second driving mechanism are connect with the rotary valve, and the rotary valve is driven to rotate；

The syringe is placed in the lower end of the rotary valve, and connect with the rotary valve；The dispensing end of the syringe It is threadedly coupled with the rotary valve；The piston end of the syringe is threadedly coupled with the push rod, the push rod vertical shift band The piston for moving the syringe is mobile, and syringe carries out imbibition and drain by rotary valve.

The beneficial effects of the utility model are: the first driving mechanism realizes push rod constant velocity linear displacement, stablize movement, realizes The accurate at the uniform velocity sampling injection of injection；Using being threadedly coupled, replaceable not co-content syringe is realized different at syringe both ends Volume liquid divides sample；Using rotary valve, it can be achieved that cleaning solution, which turns liquid with point, passes through different conduits；First driving mechanism and Two driving mechanism longitudinal arrangements have extensive market prospects so that the present apparatus has the features such as small in size, light-weight.

Based on the above technical solution, the utility model can also do following improvement.

Further, first driving mechanism includes the first driving motor, screw rod and synchronous belt, first driving motor It is fixedly connected by motor rack with the main vertical frame；The output end of first driving motor straight up, and is set with first Gear, the screw rod are vertically placed in the main vertical frame, and the upper and lower part of the screw rod is rotatablely connected with the main vertical frame； Second gear is set on the top of the screw rod, the synchronous belt covers in the first gear and second gear；The silk Be set on bar can along the bogie of screw rod vertical shift, the one end of the push rod pass through the main vertical frame by fast pulley with The bogie connection；

The output shaft of first driving motor drives the first gear rotation, and the first gear is driven by synchronous belt The second gear rotation is moved, the second gear drives screw rod rotation, and the screw rod drives the bogie along the screw rod Vertical shift, the bogie drive the push rod along main vertical frame vertical shift by fast pulley.

Beneficial effect using above-mentioned further scheme is: the first driving motor is used as driving original part using stepper motor, Bogie is driven to realize that constant velocity linear's displacement, drive push away by first gear, synchronous belt, second gear and the constant large torque of screw rod Accurate at the uniform velocity sucking and the exhaustjet liquid of liquid are realized in bar stable movement vertically.

Further, the guide rod that setting is arranged vertically in the main vertical frame, the guide rod are in the side of the screw rod；It is described The end sleeve that push rod is connect with bogie is on the guide rod, and push rod is along the guide rod vertical shift.

Beneficial effect using above-mentioned further scheme is: guide rod is able to achieve the precision guiding to push rod, realizes liquid Accurate at the uniform velocity sucking and exhaustjet liquid.

Further, baffle is provided on the bogie, the baffle is fixedly connected by screw with the bogie；Institute The side for stating main vertical frame is fixedly connected with control panel, and optoelectronic switch is equipped on the control panel, first driving motor Sending end is connected to power supply by the optoelectronic switch；When the bogie is moved to along screw rod close to the top of the screw rod, The baffle is contacted with the optoelectronic switch, and the optoelectronic switch is powered off.

Beneficial effect using above-mentioned further scheme is: can automatically control the first driving motor and start and stop, be promoted Accuracy and percent of automatization avoid manual operation from causing to make mistakes.

Further, second driving mechanism includes encoder and the second driving motor, the signal output of the encoder End and the signal input part of second driving motor pass through connection, and second driving motor is fixed with the main vertical frame Connection；The output shaft of second driving motor pass through the main vertical frame connect with the rotary valve, drive the rotary valve into Row operating.

Beneficial effect using above-mentioned further scheme is: the output end that encoder can be precisely controlled the second driving motor turns Dynamic angle, promotes accuracy and percent of automatization, manual operation is avoided to cause to make mistakes.

Further, the rotary valve includes valve body and spool, and the valve body is cylindrical-shaped structure, and solid with the main vertical frame Fixed connection；It is radially provided with injection canal, first passage and second channel in the valve body, is provided with chamber in the valve body Body, one end of the injection canal, first passage and second channel are connected to the cavity, and the injection canal, first are led to The other end of road and second channel is connected to the periphery of valve body；The injection canal be in the port in valve body periphery with The dispensing end of the syringe is threadedly coupled；

The spool is placed in the cavity, and the output axis connection with second driving motor, the second driving motor Output shaft drive the spool along the valve body axial-rotation；The spool is close to the injection canal, first passage and The cylindrical structure in the end in two channels, and third through-hole and fourth hole are radially provided in the end, the third One end of through-hole and fourth hole intersects at the axle center of the end, and the other end of the third through-hole and fourth hole is connected to The periphery of the end.

Beneficial effect using above-mentioned further scheme is: can promote the accurate of injection and exhaustjet liquid using rotary valve Property, high degree of automation reduces human error.

Further, the angle between the injection canal and first passage is 150 degree, the injection canal and second channel Between angle be 150 degree, the angle between the first passage and second channel is 60 degree.

Further, the angle between the third through-hole and fourth hole is 150 degree.

Beneficial effect using above-mentioned further scheme is: the angle between third through-hole and fourth hole can make injection logical Road is precisely connected to first passage, or is connected to injection canal precisely with second channel, promotes control convenience.

Detailed description of the invention

Fig. 1 is the main view that a kind of screw rod of the utility model drives syringe pump；

Fig. 2 is the front view that a kind of screw rod of the utility model drives syringe pump；

Fig. 3 is the structural schematic diagram of the utility model main vertical frame, the first driving mechanism and control panel；

Fig. 4 is the side view of the utility model main vertical frame, the first driving mechanism and control panel；

Fig. 5 is the structural schematic diagram of the utility model the second driving mechanism and control panel；

Fig. 6 is the main view of the utility model rotary valve；

Fig. 7 is the top view of the utility model rotary valve；

Fig. 8 is the bottom view of Fig. 7；

Fig. 9 is the structural schematic diagram of the utility model rotary valve.

In attached drawing, parts list represented by the reference numerals are as follows:

1, main vertical frame；

2, the first driving mechanism, the 201, first driving motor, 202, screw rod, 203, synchronous belt, 204, motor rack, 205, One gear, 206, second gear, 207, bogie, 208, guide rod；

3, the second driving mechanism, 301, encoder, the 302, second driving motor；

4, rotary valve, 401, valve body, 402, spool, 403, injection canal, 404, first passage, 405, second channel, 406, cavity, 407, third through-hole, 408, fourth hole；

5, syringe, 6, push rod, 7, control panel.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figures 1 to 9, a kind of screw rod drives syringe pump, including arrange vertically main vertical frame 1, the first driving mechanism 2, the second driving mechanism 3, rotary valve 4, syringe 5 and push rod 6, first driving mechanism 2 are placed in the one of the main vertical frame 1 Side, the push rod 6 are placed in side of the main vertical frame 1 far from first driving mechanism 2, first driving mechanism 2 it is defeated Outlet is connect with the push rod 6, and the output end of first driving mechanism 2 drives the push rod 6 along 1 vertical shift of main vertical frame；

Second driving mechanism 3 is placed in the upper end of first driving mechanism 2, and the rotary valve 4 is placed in the push rod 6 Top, the output end of second driving mechanism 3 connect with the rotary valve 4, and the rotary valve 4 is driven to rotate；

The syringe 5 is placed in the lower end of the rotary valve 4, and connect with the rotary valve 4；The note of the syringe 5 End is penetrated to be threadedly coupled with the rotary valve 4；The piston end of the syringe 5 is threadedly coupled with the push rod 6, and the push rod 6 is perpendicular The dynamic piston for driving the syringe 5 of translation is mobile, and syringe 5 carries out imbibition and drain by rotary valve 4.

First passage 404 is connected to the port of sucking injection by hose, the end of second channel 405 and exhaustjet liquid Mouth passes through hose and is connected to；The output end of second driving mechanism 3 drives the rotary valve 4 to rotate, so that rotary valve 4 is logical by first Road 404 sucks injection and is transmitted at syringe 5, and the output end of the first driving mechanism 2 drives the push rod 6 perpendicular along main vertical frame 1 It directly moves down, push rod 6 drives the piston end of syringe 5 to move down, and syringe 5 carries out sucking injection by rotary valve 4；

The output end of first driving mechanism 2 inverts, and drives the push rod 6 to move straight up along main vertical frame 1,6 band of push rod The piston end of dynamic syringe 5 moves up, and syringe 5 carries out exhaustjet liquid by rotary valve 4；Second driving mechanism 3 it is defeated Outlet drives the rotary valve 4 to rotate, so that the injection in syringe 5 is transmitted to the end of exhaustjet liquid by rotary valve 4 At mouthful.

First driving mechanism 2 realizes 6 constant velocity linear of push rod displacement, stablizes movement, realizes that the precision of injection at the uniform velocity samples Injection；Using being threadedly coupled, replaceable not co-content syringe 5 realizes that different volume liquids divide sample at syringe 5 both ends；Using rotation Rotary valve 4 passes through different conduits, it can be achieved that cleaning solution turns liquid with point；First driving mechanism 2 and the longitudinal row of the second driving mechanism 3 Column have extensive market prospects so that the present apparatus has the features such as small in size, light-weight.

In above-described embodiment, first driving mechanism 2 includes the first driving motor 201, screw rod 202 and synchronous belt 203, first driving motor 201 is fixedly connected by motor rack 204 with the main vertical frame 1；First driving motor 201 Output end straight up, and be set with first gear 205, the screw rod 202 is vertically placed in the main vertical frame 1, the silk The upper and lower part of bar 202 is rotatablely connected with the main vertical frame 1；Second gear is set on the top of the screw rod 202 206,203 sets of the synchronous belt in the first gear 205 and second gear 206；Being set on the screw rod 202 can be along silk The bogie 207 of 202 vertical shift of bar, the one end of the push rod 6 pass through the main vertical frame 1 and pass through fast pulley and the drive Moving frame 207 connects；

The output shaft of first driving motor 201 drives the first gear 205 to rotate, and the first gear 205 is logical Crossing synchronous belt 203 drives the second gear 206 to rotate, and the second gear 206 drives screw rod 202 to rotate, the screw rod 202 Drive the bogie 207 along 202 vertical shift of screw rod, the bogie 207 drives 6 edge of push rod by fast pulley 1 vertical shift of main vertical frame.

First driving motor 201, as driving original part, passes through first gear 205, synchronous belt 203, the using stepper motor Two gears 206 and the constant large torque of screw rod 202 driving bogie 207 realize constant velocity linear's displacement, drive push rod 6 to stablize vertically and move It is dynamic, realize accurate at the uniform velocity sucking and the exhaustjet liquid of liquid.

In above-described embodiment, the guide rod 208 that setting is arranged vertically in the main vertical frame 1, the guide rod 208 is in described The side of screw rod 202；The end sleeve that the push rod 6 is connect with bogie 207 is on the guide rod 208, and push rod 6 is along the guide rod 208 vertical shifts.

There are two the settings of guide rod 208, and two guide rods 208 are respectively at the two sides of the screw rod 202；Two 208 energy of guide rod It realizes and the precision of push rod 6 is oriented to, realize accurate at the uniform velocity sucking and the exhaustjet liquid of liquid.

In above-described embodiment, baffle is provided on the bogie 207, the baffle passes through screw and the bogie 207 are fixedly connected；The side of the main vertical frame 1 is fixedly connected with control panel 7, is equipped with optoelectronic switch on the control panel 7, institute The sending end for stating the first driving motor 201 is connected to power supply by the optoelectronic switch；The bogie 207 is moved along screw rod 202 When moving to close to the top of the screw rod 202, the baffle is contacted with the optoelectronic switch, and the optoelectronic switch is powered off.

It is provided with time relay timing driving optoelectronic switch on the control panel 7 to be connected, first can be automatically controlled Driving motor 201 starts and stops, and promotes accuracy and percent of automatization, manual operation is avoided to cause to make mistakes.

In above-described embodiment, second driving mechanism 3 includes encoder 301 and the second driving motor 302, the volume The signal output end of code device 301 and the signal input part of second driving motor 302 pass through connection, second driving Motor 302 is fixedly connected with the main vertical frame 1；The output shaft of second driving motor 302 pass through the main vertical frame 1 with it is described Rotary valve 4 connects, and the rotary valve 4 is driven to be operated.

Encoder 301 can be precisely controlled the output end rotational angle of the second driving motor 302, promote accuracy and automation Rate avoids manual operation from causing to make mistakes.

In above-described embodiment, the rotary valve 4 includes valve body 401 and spool 402, and the valve body 401 is cylindric knot Structure, and be fixedly connected with the main vertical frame 1；Injection canal 403, first passage 404 are radially provided in the valve body 401 With second channel 405, cavity 406 is provided in the valve body 401, the injection canal 403, first passage 404 and second are logical The one end in road 405 is connected to the cavity 406, the injection canal 403, first passage 404 and second channel 405 it is another End is connected to the periphery of valve body 401；The injection canal 403 is in the port on 401 periphery of valve body and the injection The dispensing end of device 5 is threadedly coupled；

The spool 402 is placed in the cavity 406, and the output axis connection with second driving motor 302, and second The output shaft of driving motor 302 drives the spool 402 along 401 axial-rotation of valve body；The spool 402 is close to the note The cylindrical structure in end in channel 403, first passage 404 and second channel 405 is penetrated, and is radially arranged in the end There are a third through-hole 407 and fourth hole 408, one end of the third through-hole 407 and fourth hole 408 intersects at the end The other end of axle center, the third through-hole 407 and fourth hole 408 is connected to the periphery of the end.

The output shaft of second driving motor 302 drives the spool 402 along 401 axial-rotation of valve body；When syringe 5 When carrying out sucking injection by rotary valve 4, spool 402 rotates, so that fourth hole 408 is connected to injection canal 403, the Three through-holes 407 are connected to first passage 404, so that syringe 5 passes through injection canal 403, fourth hole 408, third through-hole 407 and first passage 404 suck injection；The accuracy of injection and exhaustjet liquid can be promoted using rotary valve 4, automate journey Degree is high, reduces human error.

In above-described embodiment, the angle between the injection canal 403 and first passage 404 is 150 degree, and the injection is logical Angle between road 403 and second channel 405 is 150 degree, and the angle between the first passage 404 and second channel 405 is 60 degree.

In above-described embodiment, the angle between the third through-hole 407 and fourth hole 408 is 150 degree.Third through-hole Angle between 407 and fourth hole 408 can be such that injection canal 403 is precisely connected to first passage 404, or make injection canal 403 are precisely connected to second channel 405, promote control convenience.

Present apparatus working principle: the first passage 404 of valve body 401 is connected to the port of sucking injection by hose, the Two channels 405 are connected to the port of exhaustjet liquid by hose；

The output shaft of second driving motor 302 of the second driving mechanism 3 drives the spool 402 along 401 axis of valve body To rotation, encoder 301 controls the output end rotational angle of the second driving motor 302；When syringe 5 is carried out by rotary valve 4 When sucking injection, after the rotation to setting position of spool 402, the second driving motor 302 shuts down, so that fourth hole 408 It is connected to injection canal 403, third through-hole 407 is connected to first passage 404；

The output shaft of first driving motor 201 of the first driving mechanism 2 drives the first gear 205 to rotate, and described the One gear 205 drives the second gear 206 to rotate by synchronous belt 203, and the second gear 206 drives screw rod 202 to rotate, The screw rod 202 drives the bogie 207 to move straight down along the screw rod 202, and the bogie 207 passes through fast pulley The push rod 6 is driven to move straight down along main vertical frame 1, push rod 6 drives syringe 5 to pass through injection canal 403, fourth hole 408, third through-hole 407 and first passage 404 suck injection；

After the injection of the sucking setting of syringe 5, the output shaft of the second driving motor 302 of the second driving mechanism 3 is driven The spool 402 reversely rotates, and encoder 301 controls the output end rotational angle of the second driving motor 302；Spool 402 is reversed Behind rotation to setting position, the second driving motor 302 shuts down, so that third through-hole 407 is connected to injection canal 403, the Four through-holes 408 are connected to second channel 405；

The output shaft of first driving motor 201 inverts, and the output shaft of the first driving motor 201 drives the first gear 205 rotate backward, and the first gear 205 drives the second gear 206 to rotate backward by synchronous belt 203, and described second Gear 206 drive screw rod 202 rotate backward, the screw rod 202 drive the bogie 207 along the screw rod 202 straight up Mobile, the bogie 207 drives the push rod 6 to move straight up along main vertical frame 1 by fast pulley, and push rod 6 drives injection Device 5 passes through injection canal 403,405 exhaustjet liquid of third through-hole 407, fourth hole 408 and second channel；

Realize accurate at the uniform velocity sucking and the exhaustjet liquid of liquid.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (3)

1. a kind of screw rod drives syringe pump, it is characterised in that: including arrange vertically main vertical frame (1), the first driving mechanism (2), Second driving mechanism (3), rotary valve (4), syringe (5) and push rod (6), it is vertical that first driving mechanism (2) is placed in the master The side of frame (1), the push rod (6) are placed in the side of the main vertical frame (1) far from first driving mechanism (2), and described the The output end of one driving mechanism (2) is connect with the push rod (6), is pushed away described in the output end drive of first driving mechanism (2) Bar (6) is along main vertical frame (1) vertical shift；

Second driving mechanism (3) is placed in the upper end of first driving mechanism (2), and the rotary valve (4) is placed in described push away The output end of the top of bar (6), second driving mechanism (3) is connect with the rotary valve (4), drives the rotary valve (4) Rotation；

The syringe (5) is placed in the lower end of the rotary valve (4), and connect with the rotary valve (4)；The syringe (5) Dispensing end be threadedly coupled with the rotary valve (4)；The piston end of the syringe (5) is threadedly coupled with the push rod (6), institute Stating push rod (6) vertical shift drives the piston of the syringe (5) mobile, syringe (5) by rotary valve (4) carry out imbibition and Drain；

First driving mechanism (2) includes the first driving motor (201), screw rod (202) and synchronous belt (203), and described first Driving motor (201) is fixedly connected by motor rack (204) with the main vertical frame (1)；First driving motor (201) it is defeated Outlet straight up, and is set with first gear (205), and the screw rod (202) is vertically placed in the main vertical frame (1), described The upper and lower part of screw rod (202) is rotatablely connected with the main vertical frame (1)；Is set on the top of the screw rod (202) Two gears (206), the synchronous belt (203) cover in the first gear (205) and second gear (206)；The screw rod (202) master can be passed through along the bogie (207) of screw rod (202) vertical shift, the one end of the push rod (6) by being set on Stand (1) is connect by fast pulley with the bogie (207)；

The output shaft of first driving motor (201) drives first gear (205) rotation, the first gear (205) Second gear (206) rotation is driven by synchronous belt (203), the second gear (206) drives screw rod (202) rotation, The screw rod (202) drives the bogie (207) along the screw rod (202) vertical shift, and the bogie (207) passes through solid Fixed wheel drives the push rod (6) along main vertical frame (1) vertical shift.

2. a kind of screw rod drives syringe pump according to claim 1, it is characterised in that: setting is vertical in the main vertical frame (1) The guide rod (208) of arrangement, the guide rod (208) are in the side of the screw rod (202)；The push rod (6) and bogie (207) The end sleeve of connection is on the guide rod (208), and push rod (6) is along the guide rod (208) vertical shift.

3. a kind of screw rod drives syringe pump according to claim 2, it is characterised in that: be provided on the bogie (207) Baffle, the baffle are fixedly connected by screw with the bogie (207)；The side of the main vertical frame (1) is fixedly connected with Control panel (7), optoelectronic switch is equipped on the control panel (7), and the sending end of first driving motor (201) passes through described Optoelectronic switch connects to power supply；When the bogie (207) is moved to along screw rod (202) close to the top of the screw rod (202), The baffle is contacted with the optoelectronic switch, and the optoelectronic switch is powered off.