CN105665385B - Liquid transferring tube cleaner - Google Patents

Abstract

The invention relates to a pipette cleaning device, which is an experimental auxiliary device mainly used for cleaning pipettes and other instruments in experiments in the fields of cell molecular biology, microbiology, medical immunology and the like. The experiment requires a high degree of sterility, and the cleaning process is complex, cumbersome, time-consuming and labor-intensive. The device of the present invention has a shunt structure, which can distribute the water flow used for flushing to each shunt pipe, and use a cleaning pipe shaped like a test tube to place the pipette, and the shunt pipe sprays water to the cleaning pipe to clean the inside of the pipette , the water flows back in the cleaning tube to complete the rinsing of the outside of the pipette. An overflow pipe is arranged on the upper part of the cleaning pipe to discharge the water, and the overflow pipes are converged into the water outlet main pipe to discharge the water. The pipette cleaning device of the present invention is simple in structure and easy to operate. The cleaning pipe has a backflow function and can clean the inside and outside of the pipette, thereby improving the cleanliness of the pipette cleaning and improving the water utilization rate at the same time.

Description

Pipette cleaning device

technical field

The invention relates to an experimental auxiliary device, which is mainly used for cleaning pipettes and other instruments in experiments in the fields of cell and molecular biology, microbiology, medical immunology and the like.

Background technique

In the experiments of molecular biology, microbiology, immunology and other disciplines, the sterility of equipment and equipment is required to be high. Among them, instruments that are used in large quantities and are reused, such as pipettes, require strict cleaning, Disinfection and sterilization operations. The general cleaning process is to wash with detergent first, then soak in acid for 12 hours, then rinse with tap water 15 times, pure water 10 times, ultrapure water 5 times, then put it in a constant temperature oven to dry, and finally autoclave sterilization . The entire operation process is complicated and the procedures are cumbersome, especially the flushing process of tap water, pure water and ultrapure water is time-consuming and laborious.

There are also some disclosed cleaning devices at present, and the following are some patent documents of the prior art.

Patent document 1: Authorized announcement number CN 201454902 U.

Patent document 2: Authorized announcement number CN 204583816 U.

Patent document 3: Authorized announcement number CN 201283352 Y.

Patent document 4: Authorized announcement number CN 204503709 U.

As above, Patent Document 1: Fully automatic straw cleaning device, which uses a single-chip microcomputer to control the valves of three water pipes, and uses programmed control for different types of water to realize automatic flushing and easy operation, but the straws to be cleaned are batched and stacked in containers in disorder. Medium, the straw is fragile and cannot guarantee the cleanliness of cleaning.

Patent Document 2: A cleaning device for laboratory glass instruments, which uses a stepping motor to control the rotation of the connecting rod connected to the instrument fixture, and then turns to the spiral nozzle, which sprays water upwards for cleaning, and at the same time, there is a spray system on the top, which can clean multiple at the same time Each instrument is independently cleaned, sprayed up and down, and cleaned internally and externally, but the configuration of each subsystem is scattered, and the utilization rate of equipment and water is not high.

Patent Document 3: Straw cleaning device, a bracket is set in the box to place the straws, and an overflow pipe is installed in the axial direction of the straws, and the straws are rinsed by spraying the cleaning solution mixed below, but each straw is still in the same container and co-immersed in the Cross-contamination can easily occur in liquids.

Patent Document 4: A cleaning device for pipettes. Supports are arranged in groups, and a peristaltic pump is used to pour cleaning liquid into the pipette from top to bottom for cleaning. The cleaning liquid flows out from the lower end of the pipette and can be collected into the cleaning liquid. tank, or collected into other devices, this device can only clean the inside of the pipette.

The solutions described in the above documents, such as adding a single-chip microcomputer and other program-controlled methods to realize automatic switching of water sources, such as setting up brackets to clean the pipettes one by one, such as designing water channels, pressurizing devices, and spraying structures to realize automatic cleaning, all solve the problems in the instrument cleaning process. However, there are still problems such as inconvenient operation, insufficient cleanliness, and low water utilization rate.

Contents of the invention

In order to solve the above problems, the present invention designs a pipette cleaning device, which has a shunt structure, which can distribute the water flow for flushing to each shunt pipe, and adopts a cleaning pipe similar to a test tube for placing the pipette, and the shunt The pipette sprays water to the cleaning tube to clean the inside of the pipette, and the water flows back in the cleaning tube to complete the rinsing of the outside of the pipette. An overflow pipe is arranged on the upper part of the cleaning pipe to discharge the water, and the overflow pipes are converged into the water outlet main pipe to discharge the water. The pipette cleaning device of the present invention is simple in structure and easy to operate. The cleaning pipe has a backflow function and can clean the inside and outside of the pipette, thereby improving the cleanliness of the pipette cleaning and improving the water utilization rate at the same time.

The technical solution adopted by the present invention to solve the technical problem is: comprising a water inlet spray device, a cleaning water outlet device, and a lifting device; the water inlet spraying device is connected with the lifting device, and the lifting device is connected with the cleaning water outlet device;

The water inlet spraying device includes: four-way, water inlet pipe, water inlet valve, main valve, flow divider, shunt pipe, shunt valve, nozzle; The channel is connected with the diverter, the main valve is arranged between the four-way and the diverter, the diverter is connected with the diverter pipe, the diverter valve is installed on the diverter pipe, and the nozzle is installed at the end of the diverter pipe;

The cleaning water outlet device includes: a cleaning pipe, an overflow pipe, and a water outlet main pipe; the cleaning pipe is connected with the water outlet main pipe through the overflow pipe, and the overflow pipe is connected to the position lower than the upper opening of the cleaning pipe; the end of the water outlet main pipe is equipped with a water outlet joint; The pipe has a cylindrical pipe body with an open top and a closed bottom. The upper part of the cleaning pipe is equipped with positioning shrapnel and the lower part is equipped with a V-shaped screen. The bottom of the cleaning pipe is equipped with a support rod to connect with the water outlet main pipe;

The lifting device includes: a pillar chamber, a pillar, a power chamber, a motor, and a gear; the top of the pillar is fixedly connected to the bottom of the diverter, the pillar is inserted into the pillar chamber, and the pillar chamber is fixedly connected to the top of the outlet main pipe; the power chamber is located in the pillar chamber A motor is installed in the power chamber; a rack is provided on the side of the pillar close to the motor, and the power output shaft of the motor is connected to the gear through the transmission device, and the gear and the rack are meshed.

Further, the splitter tubes are arranged radially with the center axis of the splitter as the center.

Further, the cleaning pipes are radially arranged around the central axis of the water outlet main pipe.

Further, the central axis of the vertical part of the distribution pipe and the nozzle coincides with the central axis of the cleaning pipe.

Further, the four-way or water inlet valve can be replaced by a multi-way valve or a multi-way pipe fitting.

Further, the inner diameter of the cleaning tube is greater than the outer diameter of the pipette, preferably the inner diameter of the cleaning tube is equal to 2-3 times the outer diameter of the pipette to save water.

Further, the V-shaped screen is composed of a filter piece and a cross screen core, the cross screen core is located in the center of the V-shaped screen, the filter pieces are arranged radially from the cross screen core, and the filter piece is placed vertically to facilitate the passage of water. .

Further, in an embodiment of the present invention, the number of the shunt pipes and cleaning pipes is set to 12.

Further, in one embodiment of the present invention, the number of positioning elastic pieces in the cleaning tube is set to 3-6.

Further, all components in the water inlet spraying device and the cleaning water outlet device are made of acid-resistant materials.

The beneficial effect of the present invention is that the pipette cleaning device has a simple structure and is easy to operate, and the cleaning pipe has a backflow function, which can clean the inside and outside of the pipette, thereby improving the cleanliness of the pipette cleaning, and at the same time improving the water utilization.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the sectional structure drawing of the embodiment of the present invention;

Fig. 2 is a cross-sectional structure diagram of a lifting device according to an embodiment of the present invention;

3 is a top view of the arrangement of cleaning pipes according to an embodiment of the present invention;

Fig. 4 is a top view structure diagram of a V-shaped screen according to an embodiment of the present invention;

Fig. 5 is a top view of the arrangement of the positioning shrapnel according to the embodiment of the present invention;

in,

1. Inlet pipe; 2. Inlet valve; 3. Four-way; 4. Main valve; 5. Splitter; 6. Diverter valve; 7. Diverter pipe; 8. Nozzle; 9. Positioning shrapnel; 10. Pipette ; 11, cleaning pipe; 12, V-shaped screen; 1201, filter plate; 1202, cross screen core; 13, main water outlet; 14, water outlet joint; 15, lifting device; Gear; 1504, transmission device; 1505, motor; 1506, power cavity; 1507, rack; 16, overflow pipe; 17, support rod.

detailed description

First connect the example to a lab environment. As shown in Figure 1, close the water inlet valve 2, the main valve 4, and the diversion valve 6, respectively connect the water sources of tap water, pure water, and ultrapure water to the three water inlet pipes 1, and connect the water outlet connector 14 to the laboratory drainage On the system, connect the power supply of the motor 1505.

Prepare for cleaning. Start the motor 1505, lift the water spraying device, and place the pipettes 10 to be cleaned in the cleaning pipes 11 respectively. The positioning shrapnel 9 and the V-shaped screen 12 can limit the pipette 10 to the center of the cleaning tube 11 . Lower the lifting device 15 to a suitable height.

Start cleaning. Each shunt pipe 7 is provided with a shunt valve 6, and when the number of instruments to be cleaned is less than the number of cleaning pipes 11, part of the shunt pipe 7 can be closed to save water. Open the diversion valve 6 and the main valve 4, and according to the cleaning requirements, respectively open the water inlet valve 2 for controlling tap water, pure water and ultrapure water, and send the water to the nozzle 8 through the four-way 3, the diverter 5 and the diverter pipe 7 , water flows through the nozzle 8 and sprays into the inside of the pipette 10 . The water flows through the tip of the pipette 10 , flows out through the V-shaped screen, and flows back up at the bottom of the cleaning pipe 11 to clean the outside of the pipette 10 . When the water is filled to the position of the overflow pipe 16, the water can be gathered to the water outlet main pipe 13 to be discharged through the overflow pipe 16.

According to different cleanliness requirements, switch the water inlet valve 2 to control the use time of tap water, pure water and ultrapure water.

Cleaning is over. Close the water inlet valve 2 and the main valve 4, start the lifting device 15, and take out the pipette 10.

When the four-way 3 is replaced by a multi-way pipe fitting, the cleaning solution can also be added to the water inlet system to clean the instrument. In addition, if all components in the water inlet spraying device and the cleaning water outlet device are made of acid-resistant materials, the pipette cleaning device of the present invention can also be used in the acid soaking process.

Claims (6)

1. The pipette cleaning device is characterized in that it includes a water inlet spray device, a cleaning water outlet device, and a lifting device; the water inlet spraying device is connected with the lifting device, and the lifting device is connected with the cleaning water outlet device; The water inlet spraying device includes: four-way, water inlet pipe, water inlet valve, main valve, flow divider, shunt pipe, shunt valve, nozzle; The channel is connected with the diverter, the main valve is arranged between the four-way and the diverter, the diverter is connected with the diverter pipe, the diverter valve is installed on the diverter pipe, and the nozzle is installed at the end of the diverter pipe; The cleaning water outlet device includes: a cleaning pipe, an overflow pipe, and a water outlet main pipe; the cleaning pipe is connected with the water outlet main pipe through the overflow pipe, and the overflow pipe is connected to the position lower than the upper opening of the cleaning pipe; the end of the water outlet main pipe is equipped with a water outlet joint; The pipe has a cylindrical pipe body with an open top and a closed bottom. The upper part of the cleaning pipe is equipped with positioning shrapnel and the lower part is equipped with a V-shaped screen. The bottom of the cleaning pipe is equipped with a support rod to connect with the water outlet main pipe; The lifting device includes: a pillar chamber, a pillar, a power chamber, a motor, and a gear; the top of the pillar is fixedly connected to the bottom of the diverter, the pillar is inserted into the pillar chamber, and the pillar chamber is fixedly connected to the top of the outlet main pipe; the power chamber is located in the pillar chamber On one side of the power chamber, a motor is installed in the power chamber; a rack is provided on the side of the pillar close to the motor, and the power output shaft of the motor is connected to the gear through the transmission device, and the gear and the rack are meshed; The shunt pipes are arranged radially with the central axis of the shunt as the center; The V-shaped screen is composed of a filter sheet and a cross screen core. The cross screen core is located at the center of the V-shaped screen. The filter sheets are radially arranged from the cross screen core to the outside, and the filter sheets are placed vertically. 2. The pipette cleaning device according to claim 1, characterized in that: the cleaning pipes are arranged radially with the central axis of the water outlet main pipe as the center. 3. The pipette cleaning device according to claim 1, characterized in that: the central axis of the vertical part of the shunt pipe and the nozzle coincides with the central axis of the cleaning pipe. 4. The pipette cleaning device according to claim 1, characterized in that: the inner diameter of the cleaning tube is equal to 2-3 times the outer diameter of the pipette. 5. The pipette cleaning device according to claim 1, characterized in that: the number of positioning shrapnel in the cleaning tube is set to 3-6. 6. The pipette cleaning device according to claim 1, characterized in that: all components in the water inlet spray device and the cleaning water outlet device are made of acid-resistant materials.