Electric suction assisting device

Abstract

The utility model provides an electric suction assisting device which comprises a handheld part, a suction assisting part and a connecting part, one end of the suction assisting part is connected with the handheld part, the other end of the suction assisting part is connected with the connecting part, and the connecting part is connected with a pipette; a fixing base, a guide sleeve, a sliding block, a guide rod, a sliding rail, a limiting wheel, a limiting gear, a sliding rod, a piston, a suction assisting cavity, a suction assisting opening and a suction assisting head are arranged in the suction assisting part. The electric suction assisting device is provided with the suction assisting structure and the connecting mechanism, the suction assisting structure can move at different speeds through cooperation of the gear and the rack and movement of the piston, and therefore the speed and the size of the suction assisting process are controlled.

Description

Technical Field

[0001] The utility model belongs to the biochemical field, in particular to an electric suction aid. Background Art

[0002] A pipette, also known as a pipette, is an instrument used to quantitatively transfer liquids. It is widely used in biology, chemistry and other fields and as a common tool in clinical diagnostic laboratories, biotechnology laboratories, pharmaceutical and chemical laboratories, environmental laboratories, and food laboratories.

[0003] Chinese utility model patent application number CN201921427194.8 discloses an electric suction aid that can automatically stop suctioning when the maximum suction volume is reached. When the liquid level sensor on the bottom of the suction aid sleeve comes into contact with the liquid in the pipette, it can automatically detect and cut off the power, thereby stopping suctioning. It can also detect the maximum capacity in the pipette. However, in this structure, the maximum capacity is judged only by the sensor, which is easy to cause errors and may cause excessive liquid to enter the suction aid, which may easily cause damage to the suction aid. Summary of the invention

[0004] In view of this, the utility model aims to overcome the defects in the prior art and provides an electric suction aid.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An electric suction-assisting device comprises a hand-held part, a suction-assisting part and a connecting part, wherein one end of the suction-assisting part is connected to the hand-held part, and the other end is connected to the connecting part, and the connecting part is connected to a pipette;

[0007] The interior of the suction-assisting part is provided with a fixed seat, a guide sleeve, a sliding block, a guide rod, a slide rail, a limiting wheel, a limiting gear, a sliding rod, a piston, a suction-assisting chamber, a suction-assisting port, and a suction-assisting head. The fixed seat is located at one end of the suction-assisting part, the guide sleeve is connected to the fixed seat, one end of the guide rod is connected to the sliding block, and the other end is connected to the slide rail, the sliding block is placed in the guide sleeve, the limiting wheel is located above the slide rail and cooperates with the slide rail, the limiting gear is located below the slide rail and cooperates with the slide rail, the limiting wheel is connected to the motor, one end of the sliding rod is connected to the slide rail, and the other end is connected to the piston, the piston is placed in the suction-assisting chamber, the bottom of the suction-assisting chamber is provided with a suction-assisting port, and the suction-assisting port is connected to the suction-assisting head. The motor drives the limiting wheel to rotate, and the limiting gear drives the rack to move, so that the sliding rod drives the piston to move, which plays a role in assisting suction.

[0008] Furthermore, a slide groove is provided on the upper part of the slide rail, the slide groove cooperates with the limit wheel, a rack is provided on the lower part of the slide rail, the rack meshes with the limit gear. The motor drives the limit wheel to rotate, the limit gear drives the rack to move, and the limit wheel is used to limit the sliding rod while moving.

[0009] Furthermore, the connecting part includes an outer sleeve, a sleeve, and a filter. The upper part of the filter is connected to the suction-assisting head, and the lower part is connected to the sleeve. The outer sleeve is located outside the sleeve and connected to the suction-assisting part. The filter is a split structure, with the upper and lower parts directly buckled and connected, and filter paper is placed in the middle, which can be replaced according to the situation. The sleeve is used to connect the filter and the pipette, and can be replaced and cleaned.

[0010] Furthermore, filter paper is arranged inside the filter element to prevent liquid from entering the suction aid.

[0011] Furthermore, the inner side of the outer casing is provided with a plurality of reinforcing ribs, the reinforcing ribs are provided with limiting grooves, the top outer side of the pipette is provided with a convex block, the convex block matches the limiting grooves. The reinforcing ribs can improve the mechanical strength of the outer casing, and the limiting grooves provided on the reinforcing ribs can also be used for fixed cooperation with the pipette.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The electric suction-assisting device described in the utility model is provided with a suction-assisting structure and a connecting mechanism. The suction-assisting structure can move at different speeds through the cooperation of gears and racks and the movement of the piston, thereby controlling the speed and volume of the suction-assisting process.

[0014] The connection part of the electric suction aid of the utility model is provided with a filter element and a sleeve, which can prevent liquid from entering the suction aid part, and can also be disassembled and replaced, thereby improving the convenience of the suction aid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the electric suction aid according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the connecting portion described in an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Hand-held part; 2. Suction-assisting part; 3. Connecting part; 4. Pipette; 21. Fixed seat; 22. Guide sleeve; 23. Sliding block; 24. Guide rod; 25. Slide rail; 26. Limiting wheel; 27. Limiting gear; 28. Sliding rod; 29. ​​Piston; 210. Suction-assisting chamber; 211. Suction-assisting port; 212. Suction-assisting head; 251. Slide groove; 252. Rack; 31. Outer shell; 32. Sleeve; 33. Filter element; 34. Filter paper; 311. Reinforcing rib; 312. Limiting groove; 41. Bump. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] like Figure 1-2As shown, an electric suction-assisting device comprises a handheld part 1, a suction-assisting part 2, and a connecting part 3. One end of the suction-assisting part 2 is connected to the handheld part 1, and the other end is connected to the connecting part 3. The connecting part 3 is connected to a pipette 4. The interior of the suction-assisting part 2 is provided with a fixed seat 21, a guide sleeve 22, a sliding block 23, a guide rod 24, a slide rail 25, a limiting wheel 26, a limiting gear 27, a sliding rod 28, a piston 29, a suction-assisting cavity 210, a suction-assisting port 211, and a suction-assisting head 212. The fixed seat 21 is located at one end of the suction-assisting part 2, the guide sleeve 22 is connected to the fixed seat 21, and one end of the guide rod 24 is connected to the sliding rail 25. The sliding block 23 is connected to the guide sleeve 22, and the other end is connected to the slide rail 25. The sliding block 23 is placed in the guide sleeve 22. The limit wheel 26 is located above the slide rail 25 and cooperates with the slide rail 25. The limit gear 27 is located below the slide rail 25 and cooperates with the slide rail 25. The limit wheel 26 is connected to the motor. One end of the sliding rod 28 is connected to the slide rail 25, and the other end is connected to the piston 29. The piston 29 is placed in the suction-assisting chamber 210. The bottom of the suction-assisting chamber 210 is provided with a suction-assisting port 211, and the suction-assisting port 211 is connected to the suction-assisting head 212. The motor drives the limit wheel 26 to rotate, and the limit gear 27 drives the rack 252 to move, so that the sliding rod 28 drives the piston 29 to move, which plays a role in assisting suction. The upper part of the slide rail 25 is provided with a slide groove 251, and the slide groove 251 cooperates with the limit wheel 26. The lower part of the slide rail 25 is provided with a rack 252, and the rack 252 meshes with the limit gear 27. The motor drives the limit wheel 26 to rotate, and the limit gear 27 drives the rack 252 to move. While moving, the limit wheel 26 is used to limit the sliding rod 28.

[0025] The connecting part 3 includes an outer sleeve 31, a sleeve 32, and a filter 33. The upper part of the filter 33 is connected to the suction-aiding head 212, and the lower part is connected to the sleeve 32. The outer sleeve 31 is located on the outside of the sleeve 32 and is connected to the suction-aiding part 2. The filter 33 is a split structure, with the upper and lower parts directly buckled and connected, and a filter paper 34 is placed in the middle, and the filter paper 34 can be replaced according to the situation. The sleeve 32 is used to connect the filter 33 and the pipette 4, and can be replaced and cleaned. The filter paper 34 is arranged inside the filter 33. Prevent liquid from entering the suction aid.

[0026] The inner side of the outer casing 31 is provided with a plurality of reinforcing ribs 311, and the reinforcing ribs 311 are provided with limiting grooves 312. The top outer side of the pipette 4 is provided with a protrusion 41, and the protrusion 41 cooperates with the limiting grooves 312. The reinforcing ribs 311 can improve the mechanical strength of the outer casing 31, and the limiting grooves 312 are provided on the reinforcing ribs 311, which can also be used for fixed cooperation with the pipette 4.

[0027] Implementation process:

[0028] First, insert the top of the pipette 4 into the outer sleeve 31, rotate the pipette 4 so that its protrusion matches the limit groove 312, and then start the motor, which drives the limit gear 27 to rotate. The limit gear 27 moves the slide rail 25 by engaging with the rack 252. At the same time, the guide sleeve 22 plays a guiding role, so that the sliding rod 28 drives the piston 29 to move, so that the pipette 4 extracts the liquid.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric suction aid, characterized in that: It comprises a hand-held part, a suction-assisting part and a connecting part, wherein one end of the suction-assisting part is connected to the hand-held part, and the other end is connected to the connecting part, and the connecting part is connected to the pipette; The interior of the suction-assisting part is provided with a fixed seat, a guide sleeve, a sliding block, a guide rod, a slide rail, a limiting wheel, a limiting gear, a sliding rod, a piston, a suction-assisting chamber, a suction-assisting port, and a suction-assisting head. The fixed seat is located at one end of the suction-assisting part, the guide sleeve is connected to the fixed seat, one end of the guide rod is connected to the sliding block, and the other end is connected to the slide rail, the sliding block is placed in the guide sleeve, the limiting wheel is located above the slide rail and cooperates with the slide rail, the limiting gear is located below the slide rail and cooperates with the slide rail, the limiting wheel is connected to the motor, one end of the sliding rod is connected to the slide rail, and the other end is connected to the piston, the piston is placed in the suction-assisting chamber, and a suction-assisting port is provided at the bottom of the suction-assisting chamber, and the suction-assisting port is connected to the suction-assisting head.

2. The electric suction aid according to claim 1, characterized in that: The upper part of the slide rail is provided with a slide groove, and the slide groove matches with the limiting wheel. The lower part of the slide rail is provided with a rack, and the rack meshes with the limiting gear.

3. The electric suction aid according to claim 1, characterized in that: The connecting part includes an outer sleeve, a sleeve, and a filter. The upper part of the filter is connected to the suction-assisting head, and the lower part is connected to the sleeve. The outer sleeve is located outside the sleeve and is connected to the suction-assisting part.

4. The electric suction aid according to claim 3, characterized in that: Filter paper is arranged inside the filter element.

5. The electric suction aid according to claim 3, characterized in that: The inner side of the outer casing is provided with a plurality of reinforcing ribs, and the reinforcing ribs are provided with limiting grooves. The outer side of the top of the pipette is provided with a convex block, and the convex block matches the limiting groove.

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