CN211905400U

CN211905400U - Pump structure of flow injection analyzer

Info

Publication number: CN211905400U
Application number: CN202020293832.8U
Authority: CN
Inventors: 姚旭; 刘淑香; 胡琳珊; 吴兵
Original assignee: Tianjin Huakan Inspection & Testing Co ltd
Current assignee: Tianjin Huakan Inspection & Testing Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-11-10
Anticipated expiration: 2030-03-11

Abstract

The utility model relates to a pump structure of flow injection analysis appearance, including casing, feed liquor pipe, drain pipe and drive arrangement, one end of feed liquor pipe stretches into in the casing from the input port of casing, and the other end of feed liquor pipe links to each other with drive arrangement's input, and drive arrangement's output links to each other with one end of drain pipe, and the other end of drain pipe stretches out from the delivery outlet of casing, and drive arrangement drive liquid entering drain pipe in the feed liquor pipe and drive arrangement are higher than feed liquor pipe and drain pipe, and drive arrangement detachably installs in the casing; the driving device comprises a fixed shell, a driving rotating shaft, a driving blade and a motor for driving the driving rotating shaft to rotate. The utility model discloses a drive arrangement drive liquid gets into the drain pipe from the feed liquor pipe, avoids extrudeing feed liquor pipe and drain pipe to the reduction avoids appearing the weeping phenomenon to the damage of feed liquor pipe and drain pipe, improves work efficiency and the life of pump.

Description

Pump structure of flow injection analyzer

Technical Field

The utility model relates to a check out test set field especially relates to a pump structure of flow injection analysis appearance.

Background

The flow injection analyzer consists of a sample injector, a reactor, a detector, a data acquisition and instrument control system and the like, wherein the sample injector generally uses a peristaltic pump to compress a hose during sample injection, and a reaction reagent and a sample to be detected are proportionally injected into a closed and continuous flow carrier. The peristaltic pump during operation realizes the transport of liquid through the gyro wheel roll extrusion hose, need constantly rub between gyro wheel and the hose, and the hose can take place to warp, and is great to the damage of hose, makes the hose damaged easily, leads to the weeping phenomenon.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and providing a pump structure of a flow injection analyzer.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a pump structure of flow injection analysis appearance, includes casing, feed liquor pipe, drain pipe and drive arrangement, the one end of feed liquor pipe is followed the input port of casing stretches into in the casing, the other end of feed liquor pipe with drive arrangement's input links to each other, drive arrangement's output with the one end of drain pipe links to each other, the other end of drain pipe is followed the delivery outlet of casing stretches out, the drive arrangement drive intraductal liquid of feed liquor gets into the drain pipe just drive arrangement is higher than the feed liquor pipe with the drain pipe, drive arrangement detachably installs in the casing.

The driving device comprises a fixed shell, a driving rotating shaft, driving blades and a driving motor, wherein the driving rotating shaft is used for rotating the motor, a channel and a cylindrical driving cavity are arranged in the fixed shell, the driving cavity is communicated with the channel and is positioned in the middle of the channel, a plurality of grooves which are parallel to and uniformly distributed on the driving rotating shaft are formed in the upper portion of the inner wall of the driving cavity, one end of the channel is communicated with the liquid inlet pipe, the other end of the channel is communicated with the liquid outlet pipe, the driving rotating shaft and the driving blades are positioned in the driving cavity, the driving blades are uniformly distributed and connected to the outer portion of the driving rotating shaft, and the longitudinal section of each driving blade is in a fan blade shape.

In particular, the number of said driving blades is one.

Particularly, the shell is internally provided with a boss for fixing the liquid inlet pipe, the liquid outlet pipe and the driving device.

In particular, the number of grooves is 3 to 8.

In particular, the width of the groove slot opening is greater than the width of the groove bottom.

The utility model has the advantages that: the utility model discloses a drive arrangement drive liquid gets into the drain pipe from the feed liquor pipe, avoids extrudeing feed liquor pipe and drain pipe to the reduction avoids appearing the weeping phenomenon to the damage of feed liquor pipe and drain pipe, improves work efficiency and the life of pump.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

in the figure: 1-a shell; 2-liquid inlet pipe; 3-a liquid outlet pipe; 4-a drive device; 401-a stationary shell; 402-driving the rotating shaft; 403-driving the blades; 404-a channel; 405-a drive cavity; 406-a groove; 5-boss;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 and 2, a pump structure of a flow injection analyzer comprises a housing 1, a liquid inlet pipe 2, a liquid outlet pipe 3 and a driving device 4, one end of the liquid inlet pipe 2 extends into the shell 1 from the input port of the shell 1, the other end of the liquid inlet pipe 2 is connected with the input end of the driving device 4, the output end of the driving device 4 is connected with one end of the liquid outlet pipe 3, the other end of the liquid outlet pipe 3 extends out of the output port of the shell 1, the driving device 4 drives the liquid in the liquid inlet pipe 2 to enter the liquid outlet pipe 3, and the driving device 4 is higher than the liquid inlet pipe 2 and the liquid outlet pipe 3, so that the input end of the driving device 4 forms negative pressure, the output end of the driving device 4 forms larger pressure, thereby contributing to an improvement in the working efficiency of the pump, the driving unit 4 being detachably mounted in the housing 1.

Particularly, the driving device 4 includes a fixed casing 401, a driving shaft 402, a driving vane 403 and a motor for driving the driving shaft 402 to rotate, a channel 404 and a cylindrical driving cavity 405 are provided in the fixed casing 401, the driving cavity 405 is communicated with the channel 404 and is located in the middle of the channel 404, a plurality of grooves 406 which are parallel to and uniformly distributed on the driving shaft 402 are provided above the inner wall of the driving cavity 405, the contact surface between the driving vane 403 and the upper wall of the driving cavity 405 is reduced, the friction and the resistance are reduced, the problem of uneven stress of the driving vane 403 is reduced, the eccentric rotation of the driving shaft 402 is avoided, the friction between the driving shaft 402 and the inner wall of the driving cavity 405 is reduced, the noise is reduced, the working efficiency and the service life of the driving device 4 are improved, one end of the channel 404 is communicated with the liquid inlet pipe 2, the other end of the channel 404 is communicated with the liquid outlet pipe 3, the driving rotating shaft 402 and the driving blades 403 are both located in the driving cavity 405, the driving blades 403 are uniformly connected to the outside of the driving rotating shaft 402, the longitudinal section of the driving blades 403 is in a fan blade shape, so that a flow path of liquid is curved and flows into the driving cavity 405, the flow path faces outwards in a vortex shape, the fluid balance degree during liquid flowing can be improved, the radial load on the driving rotating shaft 402 during rotation of the driving blades 403 is more uniform, and the noise and vibration generated during the operation of the driving device 4 are reduced.

In particular, the number of the driving blades 403 is 3 to 6.

Particularly, a boss 5 for fixing the liquid inlet pipe 2, the liquid outlet pipe 3 and the driving device 4 is arranged in the shell 1.

In particular, the number of grooves 406 is 3-8.

In particular, the width of the notch of the groove 406 is greater than the width of the bottom of the groove 406.

The utility model discloses during the use, the starter motor, drive pivot 402 rotates, drive leaf 403 rotates along with drive pivot 402, liquid in the feed liquor pipe 2 flows into drive cavity 405 earlier under the effect of drive leaf 403, flow in and out liquid pipe 3 again, avoid extrudeing feed liquor pipe 2 and drain pipe 3, thereby reduce the damage to feed liquor pipe 2 and drain pipe 3, avoid appearing the weeping phenomenon, the design of boss 5 can be to feed liquor pipe 2, drain pipe 3 and drive arrangement 4 prescribe a limit to, and then fix it in casing 1.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A pump structure of a flow injection analyzer is characterized by comprising a shell (1), a liquid inlet pipe (2), a liquid outlet pipe (3) and a driving device (4), one end of the liquid inlet pipe (2) extends into the shell (1) from the input port of the shell (1), the other end of the liquid inlet pipe (2) is connected with the input end of the driving device (4), the output end of the driving device (4) is connected with one end of the liquid outlet pipe (3), the other end of the liquid outlet pipe (3) extends out of the output port of the shell (1), the driving device (4) drives the liquid in the liquid inlet pipe (2) to enter the liquid outlet pipe (3), and the driving device (4) is higher than the liquid inlet pipe (2) and the liquid outlet pipe (3), the drive device (4) is detachably mounted in the housing (1).

2. The pump structure of a flow injection analyzer according to claim 1, wherein the driving device (4) comprises a fixed casing (401), a driving shaft (402), a driving blade (403) and a motor for driving the driving shaft (402) to rotate, a channel (404) and a cylindrical driving cavity (405) are arranged in the fixed casing (401), the driving cavity (405) is communicated with the channel (404) and is located in the middle of the channel (404), a plurality of grooves (406) which are parallel to and uniformly distributed with the driving shaft (402) are arranged above the inner wall of the driving cavity (405), one end of the channel (404) is communicated with the liquid inlet pipe (2), the other end of the channel (404) is communicated with the liquid outlet pipe (3), the driving shaft (402) and the driving blade (403) are both located in the driving cavity (405), and the driving blades (403) are uniformly connected outside the driving shaft (402) And a fan blade-shaped longitudinal section of the drive blade (403).

3. The pump structure of a flow injection analyzer according to claim 2, wherein the number of the driving vanes (403) is 3-6.

4. A pump structure of a flow injection analyzer according to claim 3, characterized in that a boss (5) for fixing the liquid inlet pipe (2), the liquid outlet pipe (3) and the driving device (4) is provided in the housing (1).

5. The pump structure of a flow injection analyzer as set forth in claim 4, wherein the number of said grooves (406) is 3-8.

6. The pump structure of a flow injection analyzer of claim 5, wherein the width of the notch of the groove (406) is greater than the width of the bottom of the groove (406).