CN113477287B

CN113477287B - High accuracy is from assorted application of sample rifle

Info

Publication number: CN113477287B
Application number: CN202110800186.9A
Authority: CN
Inventors: 施慧慧; 顾德林; 陈俊林
Original assignee: Nantong Sixth Peoples Hospital
Current assignee: Nantong Sixth Peoples Hospital
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-09-02
Anticipated expiration: 2041-07-15
Also published as: CN113477287A

Abstract

The invention discloses a high-precision self-matching sample adding gun, which comprises: the battery box is arranged in the gun body I, and the prompt partition plate is arranged at the lower end of the gun body I; the gun body II is connected below the prompt partition plate, a piston is arranged inside the gun body II, the upper end of the piston is connected with a screw rod, and the upper end of the screw rod is provided with a micro servo motor; the handle is fixed at the top end of the gun body I, and a display screen is embedded on the upper surface of the handle; the first connecting end is installed at the lower end of the second gun body, a miniature air pump is arranged on the left side of the first connecting end, and a detection cover is installed on the outer side of the first connecting end. The detection cover provided by the invention can detect the air tightness of the connection between the gun body and the gun head so as to prompt in case of air leakage and prevent the problem of liquid leakage in the use process, and the arranged inflatable air bag ring is clamped between the connection part of the gun body and the gun head so as to improve the air tightness effect between the gun body and the gun head.

Description

High accuracy is from matching formula application of sample rifle

Technical Field

The invention relates to the technical field of medical instruments, in particular to a high-precision self-matching sample adding gun.

Background

A sample application gun, i.e. a pipette, also called a pipette, is a device for quantitatively transferring liquid, and when a small amount or a trace amount of liquid is generally transferred by using a pipette in research on analytical tests. Application of sample rifle on the existing market needs the manual regulation range in the use, and not only the regulation precision is relatively poor, and it is also very inconvenient to operate, and the rifle body of current application of sample rifle is after changing the rifle head, and the gas tightness of the rifle body and rifle head junction is relatively poor, leads to the problem of gas leakage and weeping easily, for this reason, we provide a high accuracy self-matching formula application of sample rifle that the practicality is higher.

Disclosure of Invention

The invention aims to provide a high-precision self-matching type sample adding gun, which solves the problems that the measuring range of the sample adding gun in the current market needs to be manually adjusted in the using process, the adjusting precision is poor, the operation is inconvenient, and the air tightness of the joint of the gun body and the gun head is poor after the gun head of the existing sample adding gun is replaced, so that air leakage and liquid leakage are easily caused.

In order to achieve the purpose, the invention provides the following technical scheme: a high accuracy self-matching application of sample rifle, includes:

the battery box is arranged in the gun body I, and the prompt partition plate is arranged at the lower end of the gun body I;

the gun body II is connected below the prompt partition plate, a piston is arranged inside the gun body II, the upper end of the piston is connected with a screw rod, a micro servo motor is arranged at the upper end of the screw rod, and a motor box is arranged outside the micro servo motor;

the gun comprises a gun body I, a gun handle I, a display screen, a USB charging interface and a starting key, wherein the gun body I is fixed at the top end of the gun body I;

the first connecting end is mounted at the lower end of the second gun body, a miniature air pump is arranged on the left side of the first connecting end, and a detection cover is mounted on the outer side of the first connecting end;

and the connecting end II is in threaded connection with the lower part of the connecting end I, and the lower end of the connecting end II is provided with a gun head main body.

Preferably, the battery case further includes:

a battery block mounted inside the battery case;

and the sliding rails are symmetrically fixed on the inner walls of the left side and the right side of the battery box.

Preferably, the prompt baffle further comprises:

the lamp strip is connected to the outer surface of the prompt baffle;

and the screw hole is formed in the middle position inside the prompt baffle plate and is in threaded connection with the screw rod.

Preferably, the piston further comprises:

a bearing installed at a connection of the piston and the screw;

and the distance measuring sensor is embedded on the outer edge of the lower surface of the piston.

Preferably, the motor box further comprises:

the soundproof cotton is arranged between the motor box and the micro servo motor;

and the sliding blocks are symmetrically arranged on the left side and the right side of the motor box and are in sliding connection with the sliding rails.

Preferably, the handle further comprises:

a controller mounted inside the handle;

and the pressure sensor is arranged below the operation key and is electrically connected with the controller.

Preferably, the operation key further includes:

the reset key is arranged at the middle position of the operation key;

a decrement key provided on the left side of the reset key;

and an increment key disposed at a right side of the reset key.

Preferably, the micro air pump further comprises:

a three-way valve installed at a lower end of the micro air pump;

the inflation pipe is connected to the lower left corner of the three-way valve;

and the detection pipe is connected to the lower right corner of the three-way valve and penetrates through the outer wall of the left side of the first connecting end.

Preferably, the detection cover further comprises:

the air bag ring is embedded in the inner top surface of the detection cover and is tightly attached to the upper end surface of the connecting end II, and the air bag ring is communicated with the interior of the inflation tube;

and the air pressure sensor is embedded on the inner side surface of the detection cover.

Compared with the prior art, the invention has the following beneficial effects:

the invention has simple structure and convenient use, can adjust the range size by freely adding and reducing the operation buttons, is convenient to operate, can adjust the range by utilizing the rotating screw rod, has higher precision, can detect the air tightness effect of the connection between the gun body and the gun head by the arranged detection cover so as to be convenient to remind when in air leakage and prevent the problem of liquid leakage in the use process, and the arranged inflatable air bag ring is clamped between the connection part of the gun body and the gun head so as to improve the air tightness effect between the gun body and the gun head, so that the gun body can be matched with various gun heads, and has stronger practicability;

when the lamp belt is lighted, the gun head and the gun body can be reminded of a user that the air tightness between the gun head and the gun body is poor, the adjustment is convenient for the user, the distance measuring sensor can detect the moving distance of the piston so as to more accurately control the range of the whole sample adding gun, the soundproof cotton can absorb the noise generated when the micro servo motor works, and further the noise pollution of the whole sample adding gun in the working process is reduced, and the sliding action between the sliding block and the sliding rail is utilized, so that the micro servo motor can be prevented from deflecting while moving up and down, and the stability of the micro servo motor in the working process is favorably kept;

the miniature air pump can utilize the reposition of redundant personnel effect of three-way valve to the inside transport gas of gas tube and test tube respectively, and the gas tube mainly inflates for gasbag ring inside, and the test tube just to the inboard gap of junction of link one and link two to detect the gas tightness effect through blowing to the junction, baroceptor just to the junction outside gap of link one and link two, so that detect the gas tightness effect through detecting the undulant condition of atmospheric pressure.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the cross section of the present invention in elevation;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a perspective view of the handle of the present invention;

FIG. 5 is a schematic cross-sectional view of the connection between the first connection end, the micro air pump and the second connection end.

In the figure: 1. a gun body I; 2. a battery case; 21. a battery block; 22. a slide rail; 3. a prompt baffle plate; 31. a light strip; 32. a screw hole; 4. a second gun body; 5. a piston; 51. a bearing; 52. a ranging sensor; 6. a screw; 7. a micro servo motor; 8. a motor box; 81. sound insulation cotton; 82. a slider; 9. a handle; 91. a controller; 92. a pressure sensor; 10. a display screen; 11. operating a key; 111. a reset key; 112. a decrement key; 113. a dosing key; 12. a USB charging interface; 13. a start key; 14. a first connecting end; 15. a micro air pump; 151. a three-way valve; 152. an inflation tube; 153. a detection tube; 16. a detection cover; 161. a balloon ring; 162. an air pressure sensor; 17. a second connecting end; 18. a lance tip body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a high precision self-matching sample application gun includes:

the battery box is arranged in the gun body I1, the battery box 2 is arranged in the gun body I1, and the prompting partition plate 3 is arranged at the lower end of the gun body I1;

the second gun body 4 is connected below the prompt partition plate 3, a piston 5 is installed inside the second gun body 4, the upper end of the piston 5 is connected with a screw rod 6, the range is adjusted by the aid of the rotating screw rod 6, accuracy is higher, a micro servo motor 7 is installed at the upper end of the screw rod 6, and a motor box 8 is installed outside the micro servo motor 7;

the gun body I comprises a gun body I1, a handle 9, a display screen 10, an operation key 11, a USB charging interface 12 and a starting key 13, wherein the gun body I1 is fixed at the top end of the gun body I, the display screen 10 is embedded on the upper surface of the handle 9, the operation key 11 is arranged on the right side of the display screen 10, the range can be freely adjusted by adding or subtracting the operation key 11, the operation is convenient and fast, the USB charging interface 12 is arranged on the front side surface of the handle 9, and the starting key 13 is arranged on the right end surface of the handle 9;

the first connecting end 14 is installed at the lower end of the second gun body 4, a miniature air pump 15 is arranged on the left side of the first connecting end 14, and a detection cover 16 is installed on the outer side of the first connecting end 14;

the second connecting end 17 is connected below the first connecting end 14 in a threaded manner, the lower end of the second connecting end 17 is provided with a gun head main body 18,

the battery case 2 further includes:

a battery block 21 mounted inside the battery case 2;

slide rails 22 symmetrically fixed to the left and right inner walls of the battery case 2,

the prompt baffle 3 further comprises:

the lamp strip 31 is connected to the outer surface of the prompt partition plate 3, and when the lamp strip 31 is lighted, a user can be reminded that the air tightness between the gun head and the gun body is poor, so that the adjustment of the user is facilitated;

a screw hole 32 which is arranged at the middle position inside the prompting clapboard 3 and is connected with the screw rod 6 by screw thread,

the piston 5 further comprises:

a bearing 51 installed at a junction of the piston 5 and the screw 6;

the distance measuring sensor 52 is embedded on the outer edge of the lower surface of the piston 5, the distance measuring sensor 52 can detect the moving distance of the piston 5, so that the whole measuring range of the sample adding gun can be controlled more accurately,

motor box 8 is still including:

the soundproof cotton 81 is arranged between the motor box 8 and the micro servo motor 7, and the soundproof cotton 81 can absorb the noise generated when the micro servo motor 7 works, so that the noise pollution of the whole sample adding gun during working is reduced;

the sliding blocks 82 are symmetrically arranged at the left side and the right side of the motor box 8 and are connected with the sliding rails 22 in a sliding way, and by utilizing the sliding action between the sliding blocks 82 and the sliding rails 22, the micro servo motor 7 can be prevented from deflecting while the micro servo motor 7 is assisted to move up and down, thereby being beneficial to keeping the stability of the micro servo motor 7 during working,

the handle 9 further comprises:

a controller 91 installed inside the handle 9;

a pressure sensor 92 disposed below the operation key 11 and electrically connected to the controller 91,

the operation key 11 further includes:

a reset key 111 provided at a central position of the operation key 11;

a decrement key 112 provided on the left side of the reset key 111;

an increase key 113, which is provided on the right side of the reset key 111,

the micro air pump 15 further includes:

a three-way valve 151 installed at a lower end of the micro air pump 15;

an air charging pipe 152 connected to a lower left corner of the three-way valve 151;

the detecting tube 153 is connected to the lower right corner of the three-way valve 151 and penetrates through the outer wall of the left side of the first connecting end 14, the micro air pump 15 can respectively convey air to the inflating tube 152 and the detecting tube 153 by utilizing the flow dividing effect of the three-way valve 151, the inflating tube 152 mainly inflates air inside the air bag ring 161, the detecting tube 153 is opposite to the gap on the inner side of the connecting position of the first connecting end 14 and the second connecting end 17, so that the air tightness effect can be detected by blowing air to the connecting position,

the detection cover 16 further includes:

the air bag ring 161 is embedded in the inner top surface of the detection cover 16 and is tightly attached to the upper end surface of the second connecting end 17, the air bag ring 161 is communicated with the inside of the inflation tube 152, and the air bag ring 161 is clamped between the connection positions of the gun body and the gun heads so as to improve the air tightness effect between the gun body and the gun heads, so that the gun body can be matched with various gun heads, and the practicability is higher;

and the air pressure sensor 162 is embedded in the inner side surface of the detection cover 16, and the air pressure sensor 162 is opposite to the outer gap of the joint of the first connecting end 14 and the second connecting end 17, so that the air tightness effect can be detected by detecting the air pressure fluctuation condition.

The working principle is as follows: for the high-precision self-matching sample adding gun, a battery block 21 in a battery box 2 can be charged through a USB charging interface 12, when a gun body 1 is held by a hand, fingers can abut against a handle 9, the whole sample adding gun is convenient to use, a starting key 13 is firstly pressed to start the whole sample adding gun, then the size of the liquid amount needing to be sampled is set through an operation key 11, a decrement key 112 is pressed, the decrement key 112 contacts with a pressure sensor 92, the pressure sensor 92 modulates data in a controller 91, so that the information of the size of a measuring range is displayed on a display screen 10, the measuring range is gradually decreased one by one, otherwise, the same principle can be obtained, the adding key 113 is pressed, the measuring range is gradually increased one by one, a reset key 111 is pressed, and the data is reset and reset;

after the range is set, the gun head main body 18 is firstly arranged at the lower end of the gun body II 4, the connecting end II 17 is rotated, the connecting end II 17 and the connecting end I14 are gradually screwed until the upper end face of the connecting end II 17 is close to the inner top face of the detection cover 16, at the moment, the micro air pump 15 is started, the micro air pump 15 respectively conveys air to the air inflation tube 152 and the detection tube 153 by utilizing the shunting action of the three-way valve 151, the detection tube 153 just faces to a gap at the inner side of the connecting position of the connecting end I14 and the connecting end II 17 and blows air to the gap, if the air tightness is not good, the air can be blown out, at the moment, the air pressure sensor 162 at the inner side of the detection cover 16 can detect that the air pressure outside the gap fluctuates, the controller 91 controls the lamp strip 31 to light up for reminding, the air inflation tube 152 inflates the air bag ring 161, so that the air bag ring 161 gradually bulges, the gap is filled up, and the air tightness of the connecting position of the connecting end II 17 and the connecting end I14 is good, the air pressure sensor 162 cannot detect air pressure fluctuation, the controller 91 controls the lamp strip 31 to be closed, and the sample adding gun can be put into use;

at the moment, the gun head main body 18 is aligned with the liquid to be extracted, the start key 13 is pressed, the controller 91 controls the micro servo motor 7 in the motor box 8 to work and rotate forwards, the soundproof cotton 81 is used for damping and reducing noise of the micro servo motor 7, the micro servo motor 7 drives the screw rod 6 to rotate, the screw rod 6 rotates around the bearing 51, a thread effect is generated between the screw rod 6 and the screw hole 32 of the prompt baffle plate 3, so that the screw rod 6 gradually rotates upwards to drive the piston 5 to move upwards in the gun body II 4, meanwhile, the micro servo motor 7 moves upwards to drive the slide block 82 to slide along the slide rail 22, so that the front end of the gun head main body 18 has a negative pressure suction effect to suck liquid, the distance measuring sensor 52 can detect the distance of the upward movement of the piston 5, when the sampling distance data is matched with the set measuring range distance data, the controller 91 controls the micro servo motor 7 to stop working, so that sampling is completed, and the using process of the whole high-precision self-matching type sample adding gun is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high accuracy is from matching formula application of sample rifle which characterized in that includes:

the novel gun comprises a gun body I (1), wherein a battery box (2) is installed inside the gun body I (1), and a prompt partition plate (3) is installed at the lower end of the gun body I (1);

the gun body II (4) is connected below the prompt partition plate (3), a piston (5) is installed inside the gun body II (4), the upper end of the piston (5) is connected with a screw rod (6), a micro servo motor (7) is installed at the upper end of the screw rod (6), and a motor box (8) is installed on the outer side of the micro servo motor (7);

the gun body I (1) is fixed on the gun body I, a display screen (10) is embedded in the upper surface of the handle (9), an operation key (11) is arranged on the right side of the display screen (10), a USB charging interface (12) is formed in the front side surface of the handle (9), and a starting key (13) is installed on the right end surface of the handle (9);

the first connecting end (14) is mounted at the lower end of the second gun body (4), a miniature air pump (15) is arranged on the left side of the first connecting end (14), and a detection cover (16) is mounted on the outer side of the first connecting end (14);

the connecting end II (17) is connected below the connecting end I (14) in a threaded manner, and the lower end of the connecting end II (17) is provided with a gun head main body (18);

the battery box (2) further comprises:

a battery block (21) mounted inside the battery case (2);

the sliding rails (22) are symmetrically fixed on the inner walls of the left side and the right side of the battery box (2);

the motor box (8) also comprises:

a soundproof cotton (81) installed between the motor case (8) and the micro servo motor (7);

the sliding blocks (82) are symmetrically arranged on the left side and the right side of the motor box (8) and are connected with the sliding rails (22) in a sliding manner;

the handle (9) further comprises:

a controller (91) mounted inside the handle (9);

a pressure sensor (92) disposed below the operation key (11) and electrically connected to the controller (91);

the miniature air pump (15) further comprises:

a three-way valve (151) installed at a lower end of the micro air pump (15);

an inflation pipe (152) connected to a lower left corner of the three-way valve (151);

a detection pipe (153) connected to the lower right corner of the three-way valve (151) and penetrating through the outer wall of the first connecting end (14);

the detection cover (16) further comprises:

the air bag ring (161) is embedded in the inner top surface of the detection cover (16) and is tightly attached to the upper end surface of the second connecting end (17), and the air bag ring (161) is communicated with the interior of the inflation tube (152);

and the air pressure sensor (162) is embedded in the inner side surface of the detection cover (16).

2. A high accuracy self-matching sample application gun according to claim 1, wherein the prompt baffle (3) further comprises:

a light strip (31) connected to the outer surface of the prompt baffle (3);

the screw hole (32) is formed in the middle of the inner portion of the prompt partition plate (3) and is in threaded connection with the screw rod (6).

3. A high accuracy self-matching sample application gun according to claim 1, characterized in that the piston (5) further comprises:

a bearing (51) installed at a connection of the piston (5) and the screw (6);

and the distance measuring sensor (52) is embedded in the outer edge of the lower surface of the piston (5).

4. A high accuracy self-matching sample application gun according to claim 1, wherein said operation button (11) further comprises:

a reset key (111) provided at a central position of the operation key (11);

a decrement key (112) provided on the left side of the reset key (111);

and an increment key (113) provided on the right side of the reset key (111).