Laboratory waste liquid suction device

Abstract

The utility model discloses a laboratory waste liquid suction device which comprises a machine body, a negative pressure pump, a liquid collection bottle, an anti-overflow bottle and a liquid suction gun head. The negative pressure pump is arranged in the machine body, the air suction end of the negative pressure pump extends out of the machine body and is provided with a filter, the filter is sequentially connected with the anti-overflow bottle and the liquid collecting bottle through hoses, and the liquid collecting bottle is connected with the liquid suction gun head through a hose; the liquid suction gun head is a multi-channel liquid suction gun head or a single-channel liquid suction gun head; the machine body is provided with a control module and a power module, the negative pressure pump and the control module are electrically connected with an external circuit through the power module, the machine body is provided with a negative pressure adjusting module and a power switch, and the negative pressure adjusting module and the power switch are both electrically connected with the control module. The liquid suction gun head can be matched with a multi-channel liquid suction gun head, so that waste liquid in a plurality of test tubes can be extracted at one time, and the working efficiency is improved; meanwhile, water vapor and waste liquid entering the negative pressure pump can be greatly reduced through the anti-overflow bottle and the filter, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a laboratory waste liquid suction device. Background Art

[0002] In the process of preparing chromosomes in the laboratory, a large amount of methanol and glacial acetic acid are used. After preparation, the waste liquid needs to be sucked out and a small amount of sediment at the bottom of the test tube needs to be retained. Therefore, the suction force should not be too strong during the adsorption process, otherwise the required sediment will be sucked away. The small negative pressure equipment currently available on the market is generally a suction device for sucking patient sputum. The suction device originally only has a hose. In order to more accurately suck the waste liquid in the test tube, an additional pointed glass tip is required. When a large number of experiments are required, a large number of test tube samples need to be prepared, and the current small negative pressure equipment can only suck the waste liquid in one test tube at a time, which is cumbersome to operate and has low work efficiency. At the same time, the reagents in the experiment require methanol and glacial acetic acid. The sucked waste liquid is corrosive to a certain extent. The waste liquid components enter the negative pressure pump of the machine, affecting the service life of the negative pressure pump. In order to solve the above technical problems, a new laboratory waste liquid suction device needs to be designed. Summary of the invention

[0003] The utility model provides a laboratory waste liquid suction device. The liquid suction gun head can be optionally equipped with a multi-channel liquid suction gun head, which can extract waste liquid in multiple test tubes at one time, thereby improving work efficiency. At the same time, the anti-overflow bottle and the filter can greatly reduce the amount of water vapor and waste liquid entering the negative pressure pump, thereby increasing the service life of the device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A laboratory waste liquid suction device comprises a body, a negative pressure pump, a liquid collecting bottle, an anti-overflow bottle, and a liquid suction gun head; the negative pressure pump is arranged inside the body, the suction end of the negative pressure pump extends to the outside of the body, and is provided with a filter, the filter is connected to the anti-overflow bottle and the liquid collecting bottle in sequence through a hose, and the liquid collecting bottle is connected to the liquid suction gun head through a hose; the liquid suction gun head is set as a multi-channel liquid suction gun head or a single-channel liquid suction gun head; the body is provided with a control module and a power module, the negative pressure pump and the control module are electrically connected to an external circuit through the power module, the body is provided with a negative pressure regulating module and a power switch, and the negative pressure regulating module and the power switch are both electrically connected to the control module.

[0006] Furthermore, the liquid-pipetting gun head comprises a handle, a valve switch, a multi-channel gun head, a single-channel gun head and several disposable suction tips; an airway is provided in the handle, and the valve switch is installed on the handle to control the on and off of the airway; one end of the multi-channel gun head is provided with several gun heads arranged side by side and spaced apart, and one end of the multi-channel gun head is provided with a connecting pipe, and several gun heads are connected to the connecting pipe; one end of the single-channel gun head is provided with a gun head, and the other end of the single-channel gun head is also provided with a connecting pipe; one end of the handle is connected to the liquid collecting bottle through a hose, and the connecting pipes corresponding to the multi-channel gun head and the single-channel gun head are used for detachable and sealed connection with the other end of the handle; each disposable suction tip is detachably connected to each gun head.

[0007] Furthermore, the laboratory waste liquid suction device also includes a test tube rack, which is provided with a plurality of test tube placement slots arranged in a matrix; the number and spacing of the placement slots in each row are aligned one by one with each of the gun heads on the multi-channel row of gun heads.

[0008] Furthermore, the liquid collecting bottle includes a bottle body and a sealing cover, the sealing cover is detachably and sealably connected to the bottle body, the sealing cover is provided with a first connecting tube and a second connecting tube which are sealed and connected, one end of the first connecting tube and the second connecting tube are both arranged inside the bottle body, and the other end of the first connecting tube and the second connecting tube are both arranged outside the bottle body; the first connecting tube of the liquid collecting bottle is connected to the liquid suction gun head through a hose, and the second connecting tube of the liquid collecting bottle is connected to the anti-overflow bottle through a hose.

[0009] Furthermore, the length of the first connecting tube in the liquid collecting bottle is greater than that of the second connecting tube, and a venting tube obliquely extending upward is provided in the middle of the second connecting tube.

[0010] Furthermore, the anti-overflow bottle also includes a bottle body and a sealing cover, the sealing cover is detachably and sealingly connected to the bottle body, the sealing cover is provided with a first connecting tube and a second connecting tube which are sealed and connected, one end of the first connecting tube and the second connecting tube are both arranged in the bottle body, and the other end of the first connecting tube and the second connecting tube are both arranged outside the bottle body; the first connecting tube of the liquid collecting bottle is connected to the liquid suction gun head through a hose, the second connecting tube of the liquid collecting bottle is connected to the first connecting tube of the anti-overflow bottle through a hose, and the second connecting tube of the anti-overflow bottle is connected to the negative pressure pump through a hose. Furthermore, the length of the first connecting tube in the anti-overflow bottle is greater than that of the second connecting tube.

[0011] Furthermore, an activated carbon filter assembly is provided at the pipe opening of the second connecting pipe of the anti-overflow bottle located in the bottle, and the filter is located between the second connecting pipe of the anti-overflow bottle and the negative pressure pump.

[0012] Furthermore, the body is provided with two fixing grooves, and the liquid collecting bottle and the anti-overflow bottle are placed in one of the fixing grooves respectively.

[0013] The beneficial effects of the utility model are:

[0014] 1) The utility model forms a negative pressure gas circuit for sucking waste liquid through a negative pressure pump, a liquid collecting bottle, an anti-overflow bottle, and a liquid suction gun head, and the liquid suction gun head can be optionally equipped with a multi-channel liquid suction gun head to extract waste liquid in multiple test tubes at one time, thereby solving the cumbersome and inefficient technical problem of sucking waste liquid from test tubes one by one in traditional laboratories. At the same time, the anti-overflow bottle and the filter can greatly reduce the amount of water vapor and waste liquid entering the negative pressure pump, thereby increasing the service life of the device.

[0015] 2) Set up a set of test tube racks that match the multi-channel joint gun heads, which makes it easier to align each gun head with the corresponding test tube during use, and avoid the mismatch between the number and spacing of test tube racks of different specifications on the market and the position of the gun heads.

[0016] 3) Some clean water can be pre-installed in the liquid collecting bottle so that the clean water level exceeds the first connecting tube. At this time, a negative pressure air path can be formed through the air-permeable tube on the second connecting tube, and the sucked waste liquid will flow into the clean water along the first connecting tube, which can dilute the sucked waste liquid. At the same time, it can reduce the waste liquid vapor entering the anti-overflow bottle and the negative pressure pump, and also avoid the waste liquid from splashing near the sealing cover, reduce the sealing cover from being contaminated and corroded by the waste liquid, and increase the life of the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the multi-channel gun head in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a single-channel ganged gun head in the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the test tube rack in the utility model;

[0022] Figure 5 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure ID:

[0024] 1-body, 2-negative pressure pump, 3-liquid collecting bottle, 4-anti-overflow bottle, 5-liquid pipette tip, 6-filter, 7-negative pressure regulating module, 8-power switch, 9-test tube rack, 51-handle, 52-valve switch, 53-multi-channel linked pipette tip, 54-single-channel pipette tip, 55-disposable pipette tip, 31-bottle body, 32-sealing cover, 33-first connecting tube, 34-second connecting tube, 35-air permeable tube, 36-activated carbon filter assembly. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Reference Figures 1 to 5As shown, a laboratory waste liquid suction device includes a body 1, a negative pressure pump 2, a liquid collecting bottle 3, an anti-overflow bottle 4, and a liquid suction gun head 5; the negative pressure pump 2 is arranged inside the body 1, the suction end of the negative pressure pump 2 extends to the outside of the body 1, and is provided with a filter 6, the filter 6 is connected to the anti-overflow bottle 3 and the liquid collecting bottle 4 in sequence through a hose, and the liquid collecting bottle 3 is connected to the liquid suction gun head 5 through a hose; the liquid suction gun head 5 is set as a multi-channel liquid suction gun head or a single-channel liquid suction gun head, and one of them can be installed; the body 1 is provided with a control module and a power module, the negative pressure pump 2 and the control module are electrically connected to the external circuit through the power module, and the body 1 is provided with a negative pressure regulating module 7 and a power switch 8, and the negative pressure regulating module 7 and the power switch 8 are both electrically connected to the control module. The negative pressure regulating module is used to adjust the size of the negative pressure suction force. The specific control principle and structure can be referred to the prior art, which has been disclosed and will not be repeated here. The utility model forms a negative pressure gas circuit for sucking waste liquid through a negative pressure pump 2, a liquid collecting bottle 3, an anti-overflow bottle 4, and a liquid suction gun head 5, and the liquid suction gun head 5 can be optionally equipped with a multi-channel liquid suction gun head to extract waste liquid in multiple test tubes at one time, thereby solving the cumbersome and inefficient technical problem of sucking waste liquid from test tubes one by one in traditional laboratories. At the same time, the anti-overflow bottle and the filter can greatly reduce the amount of water vapor and waste liquid entering the negative pressure pump, thereby increasing the service life of the device.

[0029] The liquid-pipetting gun head 5 comprises a handle 51, a valve switch 52, a multi-channel gun head 53, a single-channel gun head 54 and a plurality of disposable suction tips 55; an airway is arranged in the handle 51, and the valve switch 52 is installed on the handle 51 to control the on-off of the airway; a plurality of gun heads arranged side by side and spaced apart are arranged at one end of the multi-channel gun head 53, a connecting pipe is arranged at one end of the multi-channel gun head 53, and a plurality of gun heads are connected to the connecting pipe; a gun head is arranged at one end of the single-channel gun head 54, and a connecting pipe is also arranged at the other end of the single-channel gun head 54, and the connecting pipe is connected to the gun head; one end of the handle 51 is connected to the liquid collecting bottle 3 through a hose, and the connecting pipes corresponding to the multi-channel gun head 53 and the single-channel gun head 54 are used for detachable and sealed connection with the other end of the handle 51, and the specific connection method can be achieved through a quick connector; each of the disposable suction tips 55 is detachably connected to each of the gun heads. The specific structure of the multi-channel linked gun head 53 may refer to a multi-channel pipette gun.

[0030] In this embodiment, the spacing between the various gun tips of the multi-channel gun tips 53 can be made with reference to the specifications of conventional test tube racks. Of course, in order to more conveniently align each gun tip with the corresponding test tube during use, and to avoid the mismatch between the number and spacing of test tube racks of different specifications on the market and the gun tip position, a set of test tube racks 9 that match the multi-channel gun tips 53 can be designed, and the test tube rack 9 is provided with a plurality of test tube placement slots arranged in a matrix; the number and spacing of each row of the placement slots are aligned one by one with each of the gun tips on the multi-channel gun tips 53. When using the multi-channel gun tips 53, waste liquid in multiple test tubes can be extracted at one time, solving the cumbersome and inefficient technical problem of traditional laboratories sucking waste liquid from test tubes one by one.

[0031] The liquid collecting bottle 3 comprises a bottle body 31 and a sealing cover 32, wherein the sealing cover 32 is detachably and sealingly connected to the bottle body 31, and the sealing cover 32 is provided with a first connecting tube 33 and a second connecting tube 34 which are sealed and connected, and one end of the first connecting tube 33 and the second connecting tube 34 are both arranged inside the bottle body 3, and the other end of the first connecting tube 33 and the second connecting tube 34 are both arranged outside the bottle body 31; the first connecting tube 33 of the liquid collecting bottle 3 is connected to the liquid suction gun head 5 through a hose, and the second connecting tube 34 of the liquid collecting bottle 3 is connected to the anti-overflow bottle 4 through a hose. The bottle body 31 is made of glass; the bottle cover 32 comprises a rubber layer and a frame, wherein the frame is made of hard plastic material, and two connecting holes are provided on the top of the frame which penetrate to the bottom; the rubber layer is coated outside the frame, and the rubber material has good sealing performance; the first connecting tube 33 and the second connecting tube 34 are sealed and inserted into the corresponding connecting hole. The first connecting tube 33 and the second connecting tube 34 are hard rubber tubes with smooth outer walls. Because the side of the connecting hole is coated with rubber, the first connecting tube 33 and the second connecting tube 34 are inserted into the connecting hole. The length of the first connecting tube 31 in the liquid collecting bottle 3 is greater than that of the second connecting tube 32, and a venting tube 35 obliquely upward is provided in the middle of the second connecting tube 32. Some clean water can be pre-filled in the liquid collecting bottle so that the clean water level is above the first connecting tube. At this time, a negative pressure air path can be formed through the venting tube on the second connecting tube, and the sucked waste liquid will flow into the clean water along the first connecting tube 31, which can dilute the sucked waste liquid. At the same time, it can reduce the waste liquid vapor entering the anti-overflow bottle 4 and the negative pressure pump 2, and also avoid the waste liquid from splashing near the sealing cover 32, reduce the situation where the sealing cover 32 is contaminated and corroded by the waste liquid, and improve the life of the sealing cover 32.

[0032] The structure of the anti-overflow bottle 4 is similar to that of the liquid collecting bottle 3, and also includes a bottle body 31 and a sealing cover 32. The specific structure refers to the liquid collecting bottle and will not be repeated here. It should be noted that the second connecting tube 34 of the liquid collecting bottle 3 is connected to the first connecting tube 33 of the anti-overflow bottle 4 through a hose, and the second connecting tube 34 of the anti-overflow bottle 4 is connected to the negative pressure pump 2 through a hose. The length of the first connecting tube 33 in the anti-overflow bottle 4 is greater than that of the second connecting tube 34. Such a design can prevent the waste liquid in the liquid collecting bottle 31 from being sucked out after the waste liquid submerges the first connecting tube 33, thereby preventing the waste liquid from filling the anti-overflow bottle 4 and being sucked in by the negative pressure pump 2. The second connecting tube 34 of the anti-overflow bottle 4 is provided with an activated carbon filter component 36 at the pipe mouth located in the bottle. The activated carbon component can absorb moisture and waste liquid components in the gas, reduce the large amount of waste liquid water vapor entering the negative pressure pump, and the filter 6 is located between the second connecting tube 34 of the anti-overflow bottle 4 and the negative pressure pump 2. The filter 6 contains activated carbon particles and water-absorbing resin particles, which can secondary absorb waste liquid components and moisture in the gas.

[0033] In order to prevent the liquid collecting bottle 3 and the anti-overflow bottle 4 from shifting due to negative pressure suction, two fixing grooves are provided on the body 1, and the liquid collecting bottle 3 and the anti-overflow bottle 4 are placed in one of the fixing grooves respectively.

[0034] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A laboratory waste liquid suction device, characterized in that: It includes a body, a negative pressure pump, a liquid collecting bottle, an anti-overflow bottle, and a liquid suction gun head; the negative pressure pump is arranged inside the body, the suction end of the negative pressure pump extends to the outside of the body, and is provided with a filter, the filter is connected to the anti-overflow bottle and the liquid collecting bottle in sequence through a hose, and the liquid collecting bottle is connected to the liquid suction gun head through a hose; the liquid suction gun head is set to be a multi-channel liquid suction gun head or a single-channel liquid suction gun head; the body is provided with a control module and a power module, the negative pressure pump and the control module are electrically connected to the external circuit through the power module, the body is provided with a negative pressure regulating module and a power switch, and the negative pressure regulating module and the power switch are both electrically connected to the control module.

2. A laboratory waste liquid suction device according to claim 1, characterized in that: The liquid-pipetting gun head comprises a handle, a valve switch, a multi-channel gun head, a single-channel gun head and several disposable suction tips; an airway is arranged in the handle, and the valve switch is installed on the handle to control the on and off of the airway; one end of the multi-channel gun head is provided with several gun heads arranged side by side and spaced apart, and one end of the multi-channel gun head is provided with a connecting pipe, and several gun heads are connected to the connecting pipe; one end of the single-channel gun head is provided with a gun head, and the other end of the single-channel gun head is also provided with a connecting pipe; one end of the handle is connected to the liquid collecting bottle through a hose, and the connecting pipes corresponding to the multi-channel gun head and the single-channel gun head are used for detachable and sealed connection with the other end of the handle; each disposable suction tip is detachably connected to each gun head.

3. A laboratory waste liquid suction device according to claim 2, characterized in that: The laboratory waste liquid suction device also includes a test tube rack, which is provided with a plurality of test tube placement slots arranged in a matrix; the number and spacing of the placement slots in each row are aligned one by one with each of the gun heads in the multi-channel row of gun heads.

4. A laboratory waste liquid suction device according to claim 2, characterized in that: The liquid collecting bottle includes a bottle body and a sealing cover, the sealing cover is detachably and sealably connected to the bottle body, the sealing cover is provided with a first connecting tube and a second connecting tube which are sealed and connected, one end of the first connecting tube and the second connecting tube are both arranged in the bottle body, and the other end of the first connecting tube and the second connecting tube are both arranged outside the bottle body; the first connecting tube of the liquid collecting bottle is connected to the liquid suction gun head through a hose, and the second connecting tube of the liquid collecting bottle is connected to the anti-overflow bottle through a hose.

5. A laboratory waste liquid suction device according to claim 4, characterized in that: The length of the first connecting tube in the liquid collecting bottle is greater than that of the second connecting tube, and a venting tube obliquely upward is provided in the middle of the second connecting tube.

6. A laboratory waste liquid suction device according to claim 4, characterized in that: The anti-overflow bottle also includes a bottle body and a sealing cover, the sealing cover is detachably and sealably connected to the bottle body, the sealing cover is provided with a first connecting tube and a second connecting tube which are sealed and connected, one end of the first connecting tube and the second connecting tube are both arranged in the bottle body, and the other end of the first connecting tube and the second connecting tube are both arranged outside the bottle body; the first connecting tube of the liquid collecting bottle is connected to the liquid suction gun head through a hose, the second connecting tube of the liquid collecting bottle is connected to the first connecting tube of the anti-overflow bottle through a hose, and the second connecting tube of the anti-overflow bottle is connected to the negative pressure pump through a hose.

7. A laboratory waste liquid suction device according to claim 6, characterized in that: The first connecting tube in the anti-overflow bottle is longer than the second connecting tube.

8. A laboratory waste liquid suction device according to claim 7, characterized in that: An activated carbon filter assembly is provided at the pipe opening of the second connecting pipe of the anti-overflow bottle located in the bottle, and the filter is located between the second connecting pipe of the anti-overflow bottle and the negative pressure pump.

9. A laboratory waste liquid suction device according to claim 1, characterized in that: The body is provided with two fixing grooves, and the liquid collecting bottle and the anti-overflow bottle are placed in one of the fixing grooves respectively.

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