CN111054457A - Automatic liquid taking and discharging device of liquid transfer gun - Google Patents
Automatic liquid taking and discharging device of liquid transfer gun Download PDFInfo
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- CN111054457A CN111054457A CN201911374067.0A CN201911374067A CN111054457A CN 111054457 A CN111054457 A CN 111054457A CN 201911374067 A CN201911374067 A CN 201911374067A CN 111054457 A CN111054457 A CN 111054457A
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- liquid
- gun
- liquid taking
- piston
- automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
- B01L3/0224—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type having mechanical means to set stroke length, e.g. movable stops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/54—Supports specially adapted for pipettes and burettes
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses an automatic liquid taking and discharging device of a liquid-transfering gun, which comprises: a support; the liquid transferring gun comprises a piston, a gun body and at least one gun head, wherein the gun head is arranged at the bottom end of the gun body, and the piston can slide relative to the gun body so as to enable the gun head to take or discharge liquid; the vertical driving unit is arranged on the support, and the output end of the vertical driving unit is connected with the gun body to drive the gun body to vertically lift; the pipetting execution unit is arranged at the output end of the vertical driving unit, and the output end of the pipetting execution unit is connected with the piston to drive the piston to vertically slide relative to the gun body; the liquid taking grooves correspond to the gun heads one by one; and the horizontal driving unit is arranged on the support, the output end of the horizontal driving unit is connected with the liquid taking groove, and the liquid taking groove is driven to horizontally extend to the position right below the gun head or retract to avoid the moving path of the gun head. The automatic liquid taking and discharging device can achieve automatic liquid taking and discharging operation, is convenient to operate, only needs to vertically lift the liquid transferring gun, and is high in liquid taking and discharging precision and efficient.
Description
Technical Field
The invention relates to a liquid filling technology in medicine and laboratories, in particular to an automatic liquid taking and discharging device of a liquid transfer gun.
Background
At present, in liquid filling equipment with higher precision requirement, a liquid transfer gun is generally adopted to transfer a small amount of or trace liquid, wherein the liquid transfer gun needs to suck the liquid out of a liquid storage tank through a gun head and then transfer the liquid out, the liquid storage tank usually stores enough liquid, the liquid transfer gun is convenient to transfer the liquid for multiple times for a long time, the liquid storage tank is inconvenient to move due to more storage, the liquid transfer gun needs to be manually moved and operated, the precision is poor, the speed is low, the liquid taking and discharging efficiency is low, and therefore, an automatic liquid taking and discharging device of the liquid transfer gun is urgently needed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the automatic liquid taking and discharging device of the liquid transfer gun, which can conveniently realize automatic liquid taking and discharging operation, and has high precision and high efficiency.
The automatic liquid taking and discharging device of the liquid-transfering gun according to the embodiment of the invention comprises: a support; the liquid transferring gun comprises a piston, a gun body and at least one gun head, wherein the gun head is arranged at the bottom end of the gun body, and the piston can slide relative to the gun body so as to enable the gun head to take or discharge liquid; the vertical driving unit is arranged on the support, and the output end of the vertical driving unit is connected with the gun body to drive the gun body to vertically lift; the pipetting execution unit is arranged at the output end of the vertical driving unit, and the output end of the pipetting execution unit is connected with the piston and drives the piston to vertically slide relative to the gun body; at least one liquid taking groove, wherein the liquid taking grooves correspond to the gun heads one to one; and the horizontal driving unit is arranged on the support, and the output end of the horizontal driving unit is connected with the liquid taking groove to drive the liquid taking groove to horizontally extend forwards to the position right below the gun head or retract backwards to avoid the moving path of the gun head.
The method has the following beneficial effects: the liquid taking and discharging device adopts the matching of the liquid transferring gun and the liquid taking groove, the front part of the liquid taking groove can be extended to the right below the gun head through the horizontal driving unit, the vertical driving unit drives the gun body to vertically descend so that the gun head can extend into the liquid in the liquid taking groove, the liquid transferring execution unit drives the piston to slide relative to the gun body so as to absorb the liquid, the gun body vertically ascends again, the liquid taking groove retracts and avoids, a space is reserved below the gun head for a product to be filled with the liquid, the gun body can descend again so that the gun head can extend into the product to be filled with the liquid, and the liquid is discharged to the product to be filled with the liquid through the liquid transferring execution unit, so that the automatic liquid taking and discharging operation is realized, the whole operation is very convenient, the liquid transferring gun only needs to vertically ascend and descend, the liquid taking and discharging precision is high.
According to some embodiments of the invention, the gun body has a piston cavity slidably connected with the piston, the gun head has a liquid channel which is communicated up and down, and the piston cavity is communicated with the liquid channel.
According to some embodiments of the invention, each of the liquid taking tank and the lance tip is provided with twelve liquid inlets.
According to some embodiments of the present invention, a liquid replenishing port is opened on a lower side wall of the liquid taking tank for replenishing liquid into the liquid taking tank, and an overflow port is opened on an upper side wall of the liquid taking tank for discharging excess liquid in the liquid taking tank.
According to some embodiments of the invention, the device further comprises an overflow channel and an overflow pipe, wherein the overflow channel is communicated with the overflow ports of all the liquid taking tanks, and the overflow pipe is communicated with the overflow channel.
According to some embodiments of the invention, the overflow channel has a bottom lower than the bottom of the overflow opening, and the overflow tube has a bottom flush with the bottom of the overflow channel.
According to some embodiments of the present invention, a small liquid taking groove is formed at the bottom of the liquid taking groove, the small liquid taking groove is located at the lowest position of the liquid taking groove, and the small liquid taking groove is gradually reduced from top to bottom.
According to some embodiments of the invention, the vertical driving unit comprises a guide rail and a first air cylinder, the guide rail is vertically installed on the support, the guide rail is slidably connected with a mounting frame, and the gun body and the pipetting execution unit are both connected with an output end of the first air cylinder through the mounting frame.
According to some embodiments of the invention, the pipetting execution unit comprises a stepper motor and a ball screw, the output shaft of the stepper motor being connected with the screw of the ball screw, the piston being connected with a nut on the ball screw.
According to some embodiments of the invention, the horizontal driving unit is a second cylinder arranged horizontally.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a liquid-extracting tank according to an embodiment of the present invention;
FIG. 3 is a schematic view of another structure of the liquid-extracting tank according to the embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a fluid dispensing tank according to an embodiment of the present invention;
fig. 5 is a partial enlarged view of a portion a in fig. 4.
Reference numerals: the device comprises a support 1, a liquid transferring gun 2, a gun body 21, a piston 22, a gun head 23, a vertical driving unit 3, a guide rail 31, a first air cylinder 32, a liquid transferring execution unit 4, a stepping motor 41, a ball screw 42, a liquid taking groove 5, a liquid supplementing port 51, an overflow port 52, an overflow channel 53, an overflow pipe 54, a small liquid taking groove 55, a liquid supplementing pipe 56, a mounting frame 57, a horizontal driving unit 6 and a mounting frame 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, the invention discloses an automatic liquid taking and discharging device of a liquid-transfering gun, comprising: the device comprises a support 1, a pipetting gun 2, a vertical driving unit 3, a pipetting execution unit 4, a horizontal driving unit 6 and at least one pipetting groove 5, wherein the pipetting gun 2 comprises a piston 22, a gun body 21 and at least one gun head 23, the gun head 23 is mounted at the bottom end of the gun body 21, and the piston 22 can slide relative to the gun body 21 to enable the gun head 23 to take or discharge liquid; vertical drive unit 3 installs on support 1, vertical drive unit 3's output is connected with the rifle body 21, the vertical lift of drive rifle body 21, move liquid execution unit 4 and install in vertical drive unit 3's output, move liquid execution unit 4's output and be connected with piston 22, drive piston 22 is relative the vertical slip of rifle body 21, get liquid groove 5 and rifle head 23 one-to-one, horizontal drive unit 6 installs on support 1, horizontal drive unit 6's output and get liquid groove 5 and be connected, the drive is got liquid groove 5 level and is stretched to rifle head 23 under or the moving path of rifle head 23 is kept away in the back of contracting before reaching.
The liquid taking and discharging device adopts the liquid transferring gun 2 to be matched with the liquid taking groove 5, the liquid taking groove 5 can be extended forwards to be under the gun head 23 through the horizontal driving unit 6, the vertical driving unit 3 drives the gun body 21 to vertically descend so that the gun head 23 is extended into liquid in the liquid taking groove 5, then the liquid transferring execution unit 4 drives the piston 22 to slide relative to the gun body 21 so as to absorb the liquid, the gun body 21 vertically ascends, the liquid taking groove 5 retracts backwards to avoid, a space is reserved below the gun head 23 for a product to be filled with the liquid, the gun body 21 can descend again so that the gun head 23 is extended into the product to be filled with the liquid, and the liquid is discharged to the product to be filled with the liquid through the liquid transferring execution unit 4, so that automatic liquid taking and discharging operation is realized, the whole operation is very convenient, the liquid transferring gun 2 only needs to vertically ascend and descend, the liquid taking and discharging precision is high, and the efficiency is.
Specifically, the gun body 21 has a piston cavity slidably connected with the piston 22, the gun head 23 has a liquid passage which is communicated with the piston cavity and is communicated with the liquid passage, and the liquid passage can be filled with liquid or discharged when the piston 22 vertically slides relative to the piston cavity.
In some embodiments of the present invention, twelve liquid taking grooves 5 and twelve gun heads 23 are provided, twelve liquid taking grooves 5 are arranged side by side, and twelve gun heads 23 are correspondingly arranged side by side, so that the liquid transferring gun 2 has twelve liquid channels communicated with the piston cavity, which not only can improve the liquid taking and discharging efficiency, but also different liquid channels can correspond to different types of liquid to simultaneously take or discharge liquid.
Referring to fig. 2 and 3, in some embodiments of the present invention, the lower side wall of the liquid taking tank 5 is provided with liquid supplementing ports 51, each liquid supplementing port 51 is communicated with a liquid supplementing pipe 56 in a one-to-one correspondence manner for supplementing liquid to the liquid taking tank 5, the upper side wall of the liquid taking tank 5 is provided with an overflow port 52 for discharging redundant liquid in the liquid taking tank 5, after the liquid transferring gun 2 takes one or more times of liquid, the liquid taking tank 5 can add one more time of liquid through the liquid supplementing port 51, and the overflow port 52 can ensure that the maximum storage amount in the liquid taking tank 5 is constant, so as to prevent accumulation errors.
In some embodiments, the maximum liquid storage amount of the liquid taking tank 5 is larger than the single liquid taking amount, and each time the liquid taking amount is taken away from the liquid taking tank 5 by the liquid transferring gun 2, the liquid taking tank 5 can pump one liquid adding amount from the liquid supplementing port 51 through a peristaltic pump, and under normal conditions, the liquid adding amount is equal to the liquid taking amount, so that the liquid in the liquid taking tank 5 is ensured to be sufficiently used, and the maximum liquid storage amount is ensured to be in the liquid taking tank 5 before each liquid taking, and redundant liquid is discharged from the overflow port 52 in consideration of the error between the liquid taking amount and the liquid adding amount, especially the possible accumulated error.
Referring to fig. 4, a small liquid taking groove 55 is formed in the bottom of the liquid taking groove 5, the small liquid taking groove 55 is located at the lowest position of the liquid taking groove 5, the small liquid taking groove 55 is gradually narrowed from top to bottom, and is specifically in an inverted circular truncated cone shape, so that even when the amount of liquid stored in the liquid taking groove 5 is small, the liquid can be collected in the small liquid taking groove 55, and the gun head 23 can suck almost all the liquid in the liquid taking groove 5.
Referring to fig. 3, 4 and 5, the liquid taking and discharging device further comprises an overflow channel 53 and an overflow pipe 54, wherein the overflow channel 53 is communicated with the overflow ports 52 of all the liquid taking tanks 5, the overflow pipe 54 is communicated with the overflow channel 53, as shown in fig. 5, the bottom of the overflow channel 53 is lower than the bottom of the overflow ports 52, and the bottom of the overflow pipe 54 is flush with the bottom of the overflow channel 53, so that the liquid in the overflow channel 53 cannot flow back into the liquid taking tank 5 from the overflow ports 52, and can be discharged through the overflow pipe 54 in time.
In addition, in order to facilitate the connection of the liquid taking tank 5 and the horizontal driving unit 6, a mounting frame 57 is arranged outside the liquid taking tank 5, the horizontal driving unit 6 is a second cylinder which is horizontally arranged, and the mounting frame 57 is connected with the output end of the second cylinder.
Referring to fig. 1, the vertical driving unit 3 includes a guide rail 31 and a first cylinder 32, the guide rail 31 is vertically installed on the support 1, the guide rail 31 is slidably connected with the mounting bracket 7, the gun body 21 and the pipetting executing unit 4 are both connected with the output end of the first cylinder 32 through the mounting bracket 7, the first cylinder 32 can drive the gun body 21 and the pipetting executing unit 4 to vertically lift, wherein the mounting bracket 7 plays a role in supporting and driving the gun body 21 and the pipetting executing unit 4.
The pipette executing unit 4 includes a stepping motor 41 and a ball screw 42, an output shaft of the stepping motor 41 is connected to a screw of the ball screw 42, and the piston 22 is connected to a nut of the ball screw 42, so that the stepping motor 41 can drive the piston 22 to slide relative to the gun body 21, and the stepping motor 41 has high transmission accuracy, and can accurately control the liquid taking amount and the liquid discharge amount of the tip 23.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. Automatic liquid and drain of getting of liquid-transfering gun, its characterized in that includes:
a support;
the liquid transferring gun comprises a piston, a gun body and at least one gun head, wherein the gun head is arranged at the bottom end of the gun body, and the piston can slide relative to the gun body so as to enable the gun head to take or discharge liquid;
the vertical driving unit is arranged on the support, and the output end of the vertical driving unit is connected with the gun body to drive the gun body to vertically lift;
the pipetting execution unit is arranged at the output end of the vertical driving unit, and the output end of the pipetting execution unit is connected with the piston and drives the piston to vertically slide relative to the gun body;
at least one liquid taking groove, wherein the liquid taking grooves correspond to the gun heads one to one;
and the horizontal driving unit is arranged on the support, and the output end of the horizontal driving unit is connected with the liquid taking groove to drive the liquid taking groove to horizontally extend forwards to the position right below the gun head or retract backwards to avoid the moving path of the gun head.
2. The automatic fluid extraction and drainage device of a pipette as defined in claim 1 wherein the body has a piston chamber slidably connected to the piston, the tip having a fluid passage extending therethrough, the piston chamber communicating with the fluid passage.
3. The automatic liquid taking and discharging device of the liquid-transfering gun of claim 1 or 2, wherein twelve liquid taking grooves and twelve gun heads are arranged.
4. The automatic pipette of claim 1, wherein the lower side wall of the pipette tank has a fluid replenishment port for replenishing the pipette tank with fluid, and the upper side wall of the pipette tank has an overflow port for draining excess fluid from the pipette tank.
5. The automatic pipette of claim 4 further comprising an overflow channel in communication with the overflow ports of all of the pipette slots and an overflow tube in communication with the overflow channel.
6. The automatic pipette of claim 5 wherein the bottom of the overflow channel is lower than the bottom of the overflow port and the bottom of the overflow tube is flush with the bottom of the overflow channel.
7. The automatic liquid taking and discharging device of the liquid-transferring gun according to claim 1 or 4, wherein a small liquid taking groove is formed at the bottom of the liquid taking groove, the small liquid taking groove is located at the lowest position of the liquid taking groove, and the small liquid taking groove is gradually reduced from top to bottom.
8. The automatic liquid taking and discharging device of the liquid-transferring gun according to claim 1, wherein the vertical driving unit comprises a guide rail and a first air cylinder, the guide rail is vertically installed on the support, a mounting frame is slidably connected with the guide rail, and the gun body and the liquid-transferring execution unit are both connected with the output end of the first air cylinder through the mounting frame.
9. The automatic pipetting gun pipetting and draining device of claim 1 or 8 wherein the pipetting execution unit comprises a stepper motor and a ball screw, the output shaft of the stepper motor being connected to the screw of the ball screw, the piston being connected to a nut on the ball screw.
10. The automatic pipette of claim 1 wherein the horizontal drive unit is a second cylinder arranged horizontally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374067.0A CN111054457A (en) | 2019-12-27 | 2019-12-27 | Automatic liquid taking and discharging device of liquid transfer gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374067.0A CN111054457A (en) | 2019-12-27 | 2019-12-27 | Automatic liquid taking and discharging device of liquid transfer gun |
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| Publication Number | Publication Date |
|---|---|
| CN111054457A true CN111054457A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911374067.0A Pending CN111054457A (en) | 2019-12-27 | 2019-12-27 | Automatic liquid taking and discharging device of liquid transfer gun |
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| CN (1) | CN111054457A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112387318A (en) * | 2020-10-30 | 2021-02-23 | 深圳市千代机电设备有限公司 | Pipetting robot and pipetting method |
| CN112657566A (en) * | 2020-11-19 | 2021-04-16 | 北京化工大学 | Automatic liquid transfer device |
| CN112892631A (en) * | 2021-03-11 | 2021-06-04 | 中国农业大学 | A liquid-transfering gun auxiliary operation device for diluting step by step |
-
2019
- 2019-12-27 CN CN201911374067.0A patent/CN111054457A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112387318A (en) * | 2020-10-30 | 2021-02-23 | 深圳市千代机电设备有限公司 | Pipetting robot and pipetting method |
| CN112657566A (en) * | 2020-11-19 | 2021-04-16 | 北京化工大学 | Automatic liquid transfer device |
| CN112892631A (en) * | 2021-03-11 | 2021-06-04 | 中国农业大学 | A liquid-transfering gun auxiliary operation device for diluting step by step |
| CN112892631B (en) * | 2021-03-11 | 2024-05-28 | 中国农业大学 | Auxiliary operation device of pipetting gun for stepwise dilution |
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