CN220072007U - Automatic centrifugal equipment - Google Patents

Abstract

The utility model discloses automatic centrifugal equipment, which comprises a frame and a waterway system arranged on the frame, wherein a mounting bracket is arranged in the frame, and a centrifugal device is arranged on the mounting bracket; the centrifugal device includes: the device comprises a centrifugal mechanism, a sample injection and discharge mechanism and a discharge mechanism; the waterway system comprises a first switching valve, the first switching valve is a three-way valve, a first interface of the first switching valve is connected with a transfusion tube, a second interface is connected with an air inlet pipeline, a water inlet pipeline and a sample outlet pipeline, the air inlet pipeline and the water inlet pipeline are respectively provided with an air inlet valve and a water inlet valve, the sample outlet pipeline is provided with a sample outlet valve and a sample outlet pump, a third interface is connected with a sample inlet pipeline, and the sample inlet pipeline is provided with a sample inlet valve. The automatic centrifugal equipment provided by the utility model has the advantages that the structure is simple, the design is reasonable, the automatic sample injection, the automatic centrifugation and the automatic sample discharge of the water sample to be detected are realized, the automatic cleaning of the centrifugal device is realized, the efficiency is effectively improved, and the detection accuracy is ensured.

Description

Automatic centrifugal equipment

Technical Field

The utility model relates to the field of water treatment, in particular to automatic centrifugal equipment.

Background

The analysis principle generally adopts an ammonium molybdate spectrophotometry, wherein turbidity matters (mainly granular impurities such as silt and the like) in water can obviously influence the automatic detection result of parameters such as total phosphorus and the like, and the analysis principle generally has positive correlation. In order to ensure the accuracy of the detection result, the water to be detected is usually subjected to centrifugal treatment before detection so as to remove turbidity in the water. Traditional centrifugation process is realized through the manual work, need carry out the centrifugation with the water sample through the mode of manual sampling, take out the supernatant after the centrifugation again and analyze, the step is loaded down with trivial details, and consuming time is longer, to the higher water of turbidity, can't realize automatic 24 hours centrifugation operation.

In view of this, the present inventors have discovered an automatic centrifuge apparatus.

Disclosure of Invention

The utility model aims to provide automatic centrifugal equipment which has a simple structure and reasonable design and can realize automatic centrifugal treatment.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: an automatic centrifugal device comprises a frame and a waterway system arranged on the frame, wherein a mounting bracket is arranged in the frame, and a centrifugal device is arranged on the mounting bracket;

the centrifugal device includes:

the centrifugal mechanism comprises a rotary driving piece arranged on the mounting bracket, a centrifugal disk driven to rotate by the rotary driving piece, a plurality of centrifugal cups which are arranged on the centrifugal disk in a turnover way, wherein the centrifugal disk is positioned below the rotary driving piece,

the sample injection and sample discharge mechanism comprises infusion tubes which are arranged in one-to-one correspondence with the centrifugal cups, the infusion tubes are positioned above the centrifugal cups,

the discharging mechanism comprises a plurality of groups of discharging components capable of pushing the centrifugal cups to turn over, and the discharging components are arranged in one-to-one correspondence with the centrifugal cups;

the waterway system comprises a first switching valve, the first switching valve is a three-way valve, a first interface of the first switching valve is connected with a transfusion tube of the centrifugal device, a second interface of the first switching valve is connected with an air inlet pipeline, a water inlet pipeline and a sample outlet pipeline, the air inlet pipeline and the water inlet pipeline are respectively provided with an air inlet valve and a water inlet valve, the sample outlet pipeline is provided with a sample outlet valve and a sample outlet pump, a third interface of the first switching valve is connected with a sample inlet pipeline, and the sample inlet pipeline is provided with a sample inlet valve.

Further, the centrifugal mechanism further comprises a positioning disc positioned above the centrifugal disc and a centrifugal lifting cylinder for driving the positioning disc to lift, the centrifugal lifting cylinder is installed at the upper end of the mounting bracket, and a positioning structure is arranged between the centrifugal disc and the positioning disc.

Further, the positioning structure comprises a plurality of upper magnets arranged on the bottom surface of the positioning disc and a plurality of lower magnets arranged on the top surface of the centrifugal disc, wherein the upper magnets and the lower magnets are arranged in one-to-one correspondence, and the upper magnets and the lower magnets which are arranged correspondingly are homopolar magnets.

Further, the sample feeding and discharging mechanism further comprises a sample feeding disc and a sample feeding lifting cylinder for driving the sample feeding disc to lift, the sample feeding lifting cylinder is mounted on the mounting bracket, and the infusion tube is arranged on the sample feeding disc.

Further, the discharging mechanism is arranged below the centrifugal cup, the discharging assembly comprises a lifting rod and a discharging pushing cylinder, the outer side end of the lifting rod is hinged to the lower end of the mounting support, the inner side end of the lifting rod extends to the inner side of the centrifugal cup, the discharging pushing cylinder is connected with the lifting rod, and the discharging pushing cylinder stretches and contracts to drive the inner side end of the lifting rod to move up and down along an arc line.

Further, the inner side end of the lifting rod is provided with rollers, the centrifugal plates are provided with cup sleeves which are in one-to-one fit with and are used for fixing the centrifugal cups, the side surfaces of the cup sleeves are rotatably connected with the centrifugal plates, and sliding grooves corresponding to the rollers are formed in the side surfaces of the cup sleeves.

Further, the air inlet pipeline is also connected with a pneumatic branch, the pneumatic branch is directly connected with an air source, the pneumatic branch is connected with a rotary driving piece of the centrifugal device, and the pneumatic branch is provided with a pneumatic valve and a pressure reducing valve.

Further, a drainage branch is connected between the sample injection valve and the first switching valve, and a drainage valve is arranged on the drainage branch.

Further, a second switching valve is connected between the first switching valve and the infusion tube of the centrifugal device, the second switching valve is a three-way valve, a first interface of the second switching valve is connected with a first interface of the first switching valve, a second interface of the second switching valve is connected with a water inlet pipeline, and a third interface of the second switching valve is connected with the infusion tube of the centrifugal device.

Further, the sample outlet valve is a three-way valve, a first interface of the sample outlet valve is connected with a second interface of the first switching valve, an air inlet pipeline and a water inlet pipeline, a second interface of the sample outlet valve is connected with an outlet end of the sample outlet pump, and a third interface of the sample outlet valve is connected with an inlet end of the sample outlet pump.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

the automatic centrifugal equipment provided by the utility model has the advantages that the structure is simple, the design is reasonable, the automatic sample injection, the automatic centrifugation and the automatic sample discharge of a water sample to be detected and the automatic cleaning of a centrifugal device are realized, the centrifugal process of a water body with high turbidity before the test of the total phosphorus automatic analyzer is manually completed is replaced, so that the turbidity in the water is removed, the efficiency is effectively improved, and the accuracy of subsequent detection is ensured.

Drawings

FIG. 1 is a perspective view of an automatic centrifuge apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an embodiment of an automatic centrifuge with a side plate removed;

FIG. 3 is a schematic view of a part of the inside of an automatic centrifugal apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a centrifugal apparatus according to an embodiment of the utility model;

FIG. 5 is an enlarged schematic view of a portion of FIG. 4;

FIG. 6 is a schematic view of waterway connection according to an embodiment of the present utility model.

Reference numerals illustrate:

a 10-frame, wherein the frame is provided with a plurality of grooves,

11-mounting brackets, 111-mounting cross plates, 112-mounting risers,

12-a frame, 121-a mounting beam,

13-a side plate,

a 14-a touch-sensitive display screen is provided,

15-an electric control box, wherein the electric control box is provided with a plurality of electric control switches,

16-a sewage plate, 161-a drainage pump,

a 20-centrifugal mechanism, wherein the centrifugal mechanism is provided with a plurality of centrifugal grooves,

21-a rotary driving piece, 22-a centrifugal disk, 23-a centrifugal cup, 231-a cup sleeve, 24-a positioning disk,

30-a sample injection and discharging mechanism,

31-sample feeding disc, 32-infusion tube,

40-a discharge mechanism for the liquid to be discharged,

41-lifting rod, 411-roller, 42-discharge pushing cylinder, 43-slide plate,

50-a water way system, wherein the water way system,

51-first switching valve, 52-air inlet valve, 53-water inlet valve, 54-sample outlet valve, 55-sample outlet pump, 56-sample inlet valve, 57-second switching valve, 58-pneumatic valve.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that, in the present utility model, terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element of the present utility model must have a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

The utility model discloses automatic centrifugal equipment which is mainly used for carrying out centrifugal treatment on a water body before detection so as to remove turbidity in the water and ensure the accuracy of subsequent detection, and is matched with the figures 1 to 6. The automatic centrifugal equipment realizes automatic sample injection, automatic centrifugation and automatic sample discharge of a water sample (source water) to be detected, and can automatically clean the centrifugal device simultaneously, replace manual work to finish pretreatment work of a water body with high turbidity before the test of the total phosphorus automatic analyzer, effectively improve efficiency and ensure follow-up detection accuracy.

Referring to fig. 1 to 5, an automatic centrifugal apparatus includes a frame 10, a waterway system 50 disposed on the frame 10, a mounting bracket 11 disposed inside the frame 10, and a centrifugal device disposed on the mounting bracket 11.

The frame 10 of the whole equipment is in a cuboid shape, beams which are mutually connected transversely and vertically are arranged inside the frame to form a whole frame 12, and side plates 13 are arranged on each side face to conceal and protect the internal mechanism. On one side plate 13 (front plate 13), a touch display screen 14 is provided for displaying parameters for adjusting the entire apparatus. Inside the frame 10, an electric control box 15 is arranged at the upper part, a control system for controlling the whole equipment to work is arranged in the electric control box 15, and the waterway system 50 and the centrifugal device are arranged at the lower part. Specifically, a plurality of mounting beams 121 are provided on the side surfaces of the frame 12, and most of the components in the waterway system 50 are mounted on the mounting beams 121, the mounting brackets 11 are overlapped between the mounting beams 121, and the centrifugal device is mounted on the mounting brackets 11.

As shown in fig. 2 to 5, the centrifugal device includes: the device comprises a centrifugal mechanism 20, a sample feeding and discharging mechanism 30 and a discharging mechanism 40, wherein the centrifugal mechanism 20 is used for carrying out centrifugal treatment on a water sample, the sample feeding and discharging mechanism 30 is used for carrying out water sample entering before treatment and water sample outputting after centrifugation, and the discharging mechanism 40 is used for discharging sewage after cleaning.

The centrifugal mechanism 20 is designed as follows:

the centrifugal mechanism 20 comprises a rotary driving member 21 mounted on the mounting bracket 11, a centrifugal disk 22 driven to rotate by the rotary driving member 21, and a plurality of centrifugal cups 23 arranged on the centrifugal disk 22 in a reversible manner, wherein the centrifugal disk 22 is positioned below the rotary driving member 21.

The mounting bracket 11 includes a mounting cross-plate 111 located in the middle of the frame 10, and both ends of the mounting cross-plate 111 are mounted on two mounting cross-members 121. The rotation driving piece 21 is installed on the installation transverse plate 111, the centrifugal disk 22 is located below the installation transverse plate 111, an output shaft of the rotation driving piece 21 is downwards connected and fixed with the center of the centrifugal disk 22, and the rotation driving piece 21 drives the centrifugal disk 22 to rotate through the output shaft of the rotation driving piece. Wherein the rotary drive 21 is a pneumatic motor.

The centrifugal disc 22 is provided with cup sleeves 231 which are matched with and used for installing and fixing the centrifugal cups 23 one by one, and the side surfaces of the cup sleeves 231 are rotatably connected with the centrifugal disc 22. The centrifugal cup 23 is mounted on the centrifugal disk 22 by matching, and when the centrifugal cup 23 is correspondingly mounted in the cup sleeve 231, the position where the cup sleeve 231 is connected with the centrifugal disk 22 corresponds to the position close to the cup mouth of the centrifugal cup 23. The side of the cup sleeve 231 is rotatably connected with the shell of the centrifugal disc 22, so that the cup sleeve 231 can be turned over relative to the centrifugal disc 22 to drive the centrifugal cup 23 to turn over, and the cup mouth is inclined downwards, so that the liquid in the centrifugal cup 23 can be poured out conveniently.

Specifically, the centrifugal disc 22 is circular as a whole, the axis of the centrifugal disc 22 coincides with the rotating shaft thereof, and the centrifugal cups 23 are uniformly arranged along the circumferential direction of the centrifugal disc 22. The rotation axis of the centrifugal disk 22 is the output shaft of the rotary drive 21, which is coaxial with the axis of the centrifugal disk 22. In this embodiment, the number of centrifugal cups 23 is four.

The centrifugal mechanism 20 further comprises a positioning plate 24 positioned above the centrifugal plate 22, and a centrifugal lifting cylinder (not shown in the figure) for driving the positioning plate 24 to lift, wherein the centrifugal lifting cylinder is installed at the upper end of the mounting bracket 11, and a positioning structure (not shown in the figure) is arranged between the centrifugal plate 22 and the positioning plate 24.

The positioning disk 24 is located above the centrifugal disk 22, the positioning disk 24 and the centrifugal disk 22 are coaxially arranged, an output shaft of the rotary driving piece 21 movably penetrates through the positioning disk 24 to be connected and fixed with the centrifugal disk 22, and the positioning disk 24 cannot rotate along with the rotation of the centrifugal disk 22 when the rotary driving piece 21 drives the centrifugal disk 22 to rotate.

The centrifugal lifting cylinders are electric cylinders, the number of the centrifugal lifting cylinders is two, the centrifugal lifting cylinders are respectively positioned on two sides of the rotary driving piece 21, the cylinder bodies of the centrifugal lifting cylinders are fixed on the mounting transverse plate 111, the piston rods of the centrifugal lifting cylinders are downwards connected and fixed with the positioning disc 24, and the centrifugal lifting cylinders drive the positioning disc 24 to move up and down.

The positioning structure is used for positioning the positioning plate 24 and the centrifugal plate 22, specifically, positioning the centrifugal plate 22 by the positioning plate 24, so as to facilitate accurate sample feeding or sample discharging of the infusion tube 32.

The positioning structure comprises a plurality of upper magnets arranged on the bottom surface of the positioning disc 24, and a plurality of lower magnets arranged on the top surface of the centrifugal disc 22, wherein the upper magnets and the lower magnets are arranged in one-to-one correspondence, and the upper magnets and the lower magnets which are correspondingly arranged are homopolar magnets.

When the centrifugal lifting cylinder drives the positioning disk 24 downwards to approach the centrifugal disk 22, the position of the centrifugal disk 22 is unique and fixed by the repulsive force between the magnets of the same polarity when the forces between all the magnets of the positioning structure are in a balanced state. When the centrifugal lifting cylinder drives the positioning disk 24 upwards to be far away from the centrifugal disk 22, the acting force of the magnet between the centrifugal disk 22 and the positioning disk 24 disappears when the centrifugal disk 22 moves to a certain distance, and at the moment, the centrifugal disk 22 can rotate.

Specifically, the magnets are not shown in the figure, two sets of upper magnets are respectively arranged on the left and right sides of the positioning disk 24, two sets of lower magnets are respectively arranged on the two sets of upper magnets corresponding to the top surface of the centrifugal disk 22, and the upper magnets and the lower magnets corresponding to the same side (left side or right side) are homopolar magnets, so that repulsive force can be generated between the homopolar magnets.

The design of the sample feeding and discharging mechanism 30 is as follows:

the sample feeding and sampling mechanism 30 comprises infusion tubes 32 which are arranged in one-to-one correspondence with the centrifugal cups 23, and the infusion tubes 32 are positioned above the centrifugal cups 23.

The infusion tube 32 is connected to the waterway system 50 of the apparatus for the input of the water sample before centrifugation and the withdrawal of the water sample after centrifugation. Specifically, the number of the infusion tubes 32 is four, and the infusion tubes are arranged in one-to-one correspondence with the centrifugal cups 23.

The sample feeding and sampling mechanism 30 further comprises a sample feeding disc 31, and a sample feeding lifting cylinder (not shown in the figure) for driving the sample feeding disc 31 to lift, wherein the sample feeding lifting cylinder is mounted on the mounting bracket 11, and the infusion tube 32 is arranged on the sample feeding disc 31.

The sample introduction disc 31 is located below the mounting cross plate 111 and above the positioning disc 24, and the sample introduction disc 31, the positioning disc 24 and the centrifugal disc 22 are all coaxially arranged, and an output shaft of the rotary driving member 21 rotatably penetrates through the sample introduction disc 31 and the positioning disc 24 to be connected and fixed with the centrifugal disc 22.

The number of the sample lifting cylinders is two, the sample lifting cylinders are respectively positioned at the left side and the right side of the rotary driving piece 21, the cylinder bodies of the sample lifting cylinders are fixed on the mounting transverse plate 111, the piston rods of the sample lifting cylinders are downwards connected and fixed with the sample tray 31, and the sample lifting cylinders drive the sample tray 31 to move up and down.

The infusion tube 32 is a hard tube, is fixed on the sample introduction disc 31 and corresponds to the centrifugal cups 23 one by one, the bottom end of the infusion tube 32 corresponds to the upper end opening of the centrifugal cup 23, and the top end of the infusion tube is connected with other parts of the waterway system 50 through a hose. The sample feeding lifting cylinder drives the sample feeding disc 31 to move downwards, the bottom end of the infusion tube 32 can extend into the centrifugal cup 23, a water sample to be detected is input into the centrifugal cup 23, or supernatant fluid after centrifugation in the centrifugal cup 23 is pumped out and sent to the next step for detection; the sample feeding lifting cylinder drives the sample feeding disc 31 to move upwards, the bottom end of the infusion tube 32 is separated from the centrifugal cup 23, and at the moment, the centrifugal disc 22 can rotate or the centrifugal cup 23 can overturn to guide out internal sewage.

The design of the discharge mechanism 40 is as follows:

the discharging mechanism 40 comprises a plurality of groups of discharging components capable of pushing the centrifugal cups 23 to turn over, and the discharging components are arranged in one-to-one correspondence with the centrifugal cups 23.

A set of discharge assemblies corresponds to one of the centrifugal cups 23, the discharge assemblies being adapted to flip the centrifugal cup 23 so that the centrifugal cup 23 is flipped to tilt the mouth of the cup or even down so that the liquid in the cup can be poured out.

The discharging mechanism 40 is disposed below the centrifugal cup 23, the discharging assembly includes a lifting rod 41 and a discharging pushing cylinder 42, the outer end of the lifting rod 41 is hinged to the lower end of the mounting bracket 11, the inner end of the lifting rod 41 extends to the inner side of the centrifugal cup 23, the discharging pushing cylinder 42 is connected with the lifting rod 41, and the discharging pushing cylinder 42 stretches and contracts to drive the inner end of the lifting rod to move up and down along an arc line.

Specifically, the mounting bracket 11 includes four mounting risers 112, each located at four corners of the bottom end of the frame 12, and a set of drain assemblies are correspondingly mounted to one of the mounting risers 112. The discharge push rod is an electric cylinder, the cylinder body of the discharge push rod is horizontally fixed on the mounting vertical plate 112, the outer side end of the lifting rod 41 is rotatably fixed on the mounting vertical plate 112 and is positioned below the rod body of the discharge push rod 42, the inner side end of the lifting rod 41 extends inwards to the inner side of the centrifugal cup 23, and the piston rod of the discharge push rod 42 is rotatably connected with the middle part of the lifting rod 41 towards the inner side.

In this way, the telescopic rod of the discharge push cylinder 42 stretches and contracts to drive the inner side end of the lifting rod 41 to move up and down, specifically, the movement track of the inner side end of the lifting rod 41 is an arc, the circle center corresponding to the arc is the outer side end (the position fixed by rotating with the mounting vertical plate 112) of the lifting rod 41, and the radius is the length of the lifting rod 41. And because the inner side end of the lifting rod 41 extends to the inner side of the centrifugal cup 23 (the outer side of the centrifugal cup 23 faces to one side of the center of the centrifugal disc 22), and because the cup sleeve 231 of the centrifugal cup 23 is rotatably connected with the centrifugal disc 22, when the telescopic rod of the discharge pushing cylinder 42 is retracted to drive the inner side end of the lifting rod 41 to move upwards, the bottom end of the centrifugal cup 23 is driven to move upwards so as to enable the centrifugal cup 23 to tilt in a turnover way, and when the telescopic rod of the discharge pushing cylinder 42 extends to drive the inner side end of the lifting rod 41 to move downwards, the bottom end of the centrifugal cup 23 moves downwards under the action of gravity to reset.

Further, in order to ensure that the lifting rod 41 lifts and drives the centrifugal cup 23 and the cup sleeve 231 to turn over, the whole movement process can be more stable, the roller 411 is arranged at the inner side end of the lifting rod 41, and a sliding groove corresponding to the roller 411 is arranged on the side surface of the cup sleeve 231 (the side of the cup sleeve 231 facing the center of the centrifugal disc 22).

Specifically, a vertically arranged sliding plate 43 is provided on the side surface of the cup sleeve 231, the sliding plate 43 is provided with the sliding groove, the roller 411 at the inner side end of the lifting rod 41 is in sliding fit with the sliding groove, and when the inner side end of the lifting rod 41 is lifted, the roller 411 slides up and down in the sliding groove of the sliding plate 43.

In this embodiment, a sewage tray 16 is further disposed at the bottom end of the frame 12, and the sewage tray 16 corresponds to a centrifugal device, and when the centrifugal cup 23 is turned upside down, sewage in the centrifugal cup 23 is poured into the sewage tray 16. In addition, the sewage tray 16 is further connected with a sewage pipeline, and a drain pump 161 is arranged on the sewage pipeline, so that when the sewage in the centrifugal cup 23 is poured, the drain pump 161 works to drain the sewage in the sewage tray 16. Wherein the drain pump 161 is a peristaltic pump.

With reference to fig. 6, the water circuit 50 is designed as follows:

it should be noted that, the three-way valves in this embodiment include three interfaces, which are a first interface, a second interface, and a third interface, respectively, and the on states of the three-way valves are three: the first interface is communicated with the second interface, the first interface is communicated with the third interface, and all the interfaces are not communicated (the three-way valve is in a closed state).

The waterway system 50 includes a first switching valve 51 (corresponding to V1 in fig. 6), the first switching valve 51 is a three-way valve, a first port of the first switching valve 51 is connected with the infusion tube 32 of the centrifugal device, a second port of the first switching valve 51 is connected with an air inlet pipeline, a water inlet pipeline and a sample outlet pipeline, the air inlet pipeline and the water inlet pipeline are respectively provided with an air inlet valve 52 (corresponding to V4 in fig. 6) and a water inlet valve 53 (corresponding to V3 in fig. 6), the sample outlet pipeline is provided with a sample outlet valve 54 (corresponding to V6 in fig. 6) and a sample outlet pump 55 (corresponding to P1 in fig. 6), a third port of the first switching valve 51 is connected with a sample inlet pipeline, and a sample inlet valve 56 (corresponding to V5 in fig. 6) is arranged on the sample inlet pipeline.

The infusion tube 32 is the infusion tube 32 used for sampling in the centrifugal cup 23 in the centrifugal device.

The air intake line is connected to an external air source, and compressed air is introduced into the centrifugal cup 23 through the air intake line and the first switching valve 51. The water inlet pipe is connected to an external water source, and fresh water is introduced into the centrifugal cup 23 (for cleaning the centrifugal cup 23) through the water inlet pipe and the first switching valve 51.

The sample feeding pipeline is connected with a container for storing a water sample (source water) to be detected outside, and the water sample (source water) to be detected is input into the centrifugal cup 23 through the water inlet pipeline and the first switching valve 51. The sample outlet pipeline is connected with a water sample container, the water sample in the centrifugal cup 23 after centrifugation is pumped out through the first switching valve 51 and the sample outlet pump 55 and is conveyed to the detection equipment, and the water sample in the water sample container is conveyed to the detection equipment for detection of the centrifuged water sample.

A drainage branch is connected between the sample injection valve 56 and the first switching valve 51, and a drainage valve is arranged on the drainage branch. So that the external water source passes through the sample valve 56 and then two paths are divided: one path enters the centrifugal device through the first switching valve 51, the other part is discharged through the drainage branch, and the flow and pressure of source water entering the centrifugal device can be adjusted through the drainage valve on the drainage branch, so that the flow and pressure of water entering the centrifugal device can be kept in a stable range by adjusting the opening of the drainage valve.

A waterway manual valve and a waterway check valve are arranged between the water inlet valve 53 and the first switching valve 51. An air passage manual valve and an air passage one-way valve are arranged between the air inlet valve 52 and the first switching valve 51. And the water inlet pipeline, the air inlet pipeline and the sample outlet pipeline are all communicated.

The design of the waterway check valve and the air passage check valve can prevent the water sample from entering the air inlet pipeline or the water inlet pipeline when the water sample after the centrifugal is output by the water outlet pipeline. The design of the waterway manual valve and the air circuit manual valve enables the adjustment of the air inlet pipeline or the water inlet pipeline to be more flexible.

In addition, the air inlet pipeline and the water inlet pipeline can respectively convey clear water and compressed air to the sample outlet pipeline (at the moment, the first switching valve 51 is closed and is not conducted), so that residual liquid in the sample outlet pipeline can be cleaned.

The number of the infusion tubes 32 comprises a plurality of infusion tubes, and each infusion tube 32 is provided with an infusion manual valve. The design of the infusion tube 32 refers to the corresponding content of the centrifugal device, and the number of the infusion tube is four, and the infusion tube corresponds to the centrifugal cups 23 one by one. The manual valve is arranged on the infusion tube 32, so that each infusion tube 32 can be independently controlled, and the use is more flexible.

A second switching valve 57 (corresponding to V2 in fig. 6) is connected between the first switching valve 51 and the infusion tube 32 of the centrifugal device, the second switching valve 57 is a three-way valve, a first port of the second switching valve 57 is connected with a first port of the first switching valve 51, a second port of the second switching valve 57 is connected with a water inlet pipeline, and a third port of the second switching valve 57 is connected with the infusion tube 32 of the centrifugal device.

Thus, liquid or gas entering the centrifugal cup 23 from the first switching valve 51 also passes through the second switching valve 57. In addition, the second port of the second switching valve 57 is connected to the water intake pipe, so that the compressed air in the air intake pipe and the clean water in the water intake pipe can be transferred from the first switching valve 51 to the second switching valve 57 to the centrifugal cup 23 (cleaning the centrifugal cup 23) or be output through the sample intake pipe (cleaning and evacuating the residual liquid in the sample intake pipe).

The sample outlet valve 54 is a three-way valve, a first port of the sample outlet valve 54 is connected with a second port of the first switching valve 51, an air inlet pipeline and an water inlet pipeline, a second port of the sample outlet valve 54 is connected with an outlet end of the sample outlet pump 55, and a third port of the sample outlet valve 54 is connected with an inlet end of the sample outlet pump 55.

The sample outlet valve 54 uses a three-way valve, so that the sample outlet pipe can directly clean and empty residual liquid in the sample outlet pipe through the sample outlet valve 54 in addition to the sample outlet through the sample outlet pump 55, in the process, the first switching valve 51 is switched to a closed state, the sample outlet valve 54 is switched to be communicated with the first interface and the second interface, and compressed air in the air inlet pipe and clean water in the water inlet pipe enter the sample outlet pipe and are discharged after passing through the sample outlet valve 54.

In this embodiment, the sample injection valve 56 is a three-way valve, the first port of the sample injection valve 56 is connected with a container for storing a water sample (source water) to be detected outside, the third port of the sample injection valve 56 is connected with the third port of the first switching valve 51 and the second port of the second switching valve 57, and the second port of the sample injection valve 56 is connected with another system which is irrelevant to the centrifugal device of the present utility model, but the system is also required for the water sample to be detected, so that the connection is performed.

The air inlet pipeline is also connected with a pneumatic branch, the pneumatic branch is directly connected with an air source, the pneumatic branch is connected with a rotary driving piece 21 of the centrifugal device, and the pneumatic branch is provided with a pneumatic valve 58 (corresponding to VS1 in fig. 6) and a pressure reducing valve. The air source can be output through an air inlet pipeline or conveyed to the rotary driving piece 21 (a pneumatic motor) through a pneumatic branch, so that the rotary driving piece 21 works to drive the centrifugal disc 22 to rotate.

The whole equipment has the following working process:

for convenience of description, the first interface, the second interface, and the third interface of the three-way valve are respectively referred to as 1, 2, and 3 interfaces (respectively corresponding to 1, 2, and 3 interfaces of the three-way valve in the drawings), for example: the 1-3 interfaces of the first switching valve are communicated, which means that the first interface and the third interface of the first switching valve are communicated.

And (3) sample injection: in the centrifugal device: the positioning disk 24 descends to fix the centrifugal disk 22, the lifting rod 41 descends to turn over the centrifugal cup 23 to reset to be in a vertical state, and the sample introduction disk 31 descends to drive the infusion tube 32 to extend into the centrifugation; in the waterway system: the first switching valve (V1) is communicated with the 1-3 port, the second switching valve (V2) is communicated with the 1-3 port, the sampling valve (V5) is communicated with the 1-3 port, a water sample (source water) to be detected passes through the sampling valve (V5), the first switching valve (V1), the second switching valve (V2) and the infusion tube 32, enters the centrifugal cup 23 for 5 seconds, the sampling valve (V5) is switched to the 1-2 port, and after receiving a switching signal of the sampling valve (V5), the first switching valve (V1) and the second switching valve (V2) are switched to a closed state, so that the sampling process is completed.

And (3) centrifuging: after receiving the switching signals of the first switching valve (V1) and the second switching valve (V2), the positioning disc 24 ascends, the sample feeding disc 31 ascends to drive the infusion tube 32 to ascend, the pneumatic valve (VS 1) is opened after 5 seconds, the rotary driving piece 21 (pneumatic motor) works to drive the centrifugal disc 22 and the centrifugal cup 23 to rotate and centrifuge, and the pneumatic valve (VS 1) is closed after 2 minutes to finish the centrifugation process.

Sample discharging process: after receiving the closing signal of the pneumatic valve (VS 1) for 15 seconds, the positioning disk 24 descends, the sample injection disk 31 descends after 10 seconds, the first switching valve (V1) 1-2 is connected, the second switching valve (V2) 1-3 is connected, the sample outlet valve (V6) 1-3 is connected, then the sample outlet pump (P1) starts to work, upper liquid (water sample) centrifuged in the centrifugal cup 23 is pumped out through the infusion tube 32, the second switching valve (V2), the first switching valve (V1), the sample outlet valve (V6) and the sample outlet pump (P1) after 20 seconds, the sample outlet pump (P1) stops working, then the first switching valve (V1) and the second switching valve (V2) are switched to the closed state, the sample outlet valve (V6) is switched to the 1-2 is connected, the air inlet valve (V4) is closed after 5 seconds is opened, and then the sample outlet valve (V6) is switched to the closed state.

The cleaning process comprises the following steps: the first switching valve (V1) 1-2 is connected, the second switching valve (V2) 1-3 is connected, the water inlet valve (V3) is closed after the valve is opened for 5 seconds, the air inlet valve (V4) is closed after the valve is opened for 5 seconds, compressed air and clean water enter the centrifugal cup 23 to clean turbid matters deposited at the bottom, then the sample feeding disc 31 is lifted, the lifting rod 41 is lifted after 15 seconds to enable the centrifugal cup 23 to overturn and lead out sewage in the centrifugal cup through the cooperation of the roller 411 and the sliding groove of the sliding plate 43, the sewage falls into the sewage disc 16 below, the lifting rod 41 is lowered after 15 seconds, then the positioning disc 24 and the sample feeding disc 31 are lowered again, the water inlet valve (V3) is closed after 15 seconds, then the positioning disc 24 and the sample feeding disc 31 are lifted again, the water in the centrifugal cup 23 is poured out after 15 seconds, the lifting rod 41 is lowered after 15 seconds, the first switching valve (V1) and the second switching valve (V2) are switched to the closed state, and the sewage in the sewage draining pump 16 is stopped after the operation is started for 60 seconds.

When different source waters are replaced to carry out centrifugal treatment, in order to ensure the accuracy of subsequent detection, the sample injection pipeline is required to be cleaned and emptied, and the residual liquid in the sample injection pipeline is emptied by the following steps:

the first switching valve (V1) is communicated with the 1-2 port, the second switching valve (V2) is communicated with the 1-2 port, the sampling valve (V5) is communicated with the 1-3 port, the water inlet valve (V3) is closed after being opened for 5 seconds, the air inlet valve (V4) is closed after being opened for 5 seconds, and the emptied and cleaned liquid flows out from the port of the sampling pipeline, so that the cleaning and emptying can be ensured, and the cleaning and emptying can be repeated for a plurality of times.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. An automatic centrifugal apparatus, characterized in that: the device comprises a frame and a waterway system arranged on the frame, wherein a mounting bracket is arranged in the frame, and a centrifugal device is arranged on the mounting bracket;

the centrifugal device includes:

the centrifugal mechanism comprises a rotary driving piece arranged on the mounting bracket, a centrifugal disk driven to rotate by the rotary driving piece, a plurality of centrifugal cups which are arranged on the centrifugal disk in a turnover way, wherein the centrifugal disk is positioned below the rotary driving piece,

the sample injection and sample discharge mechanism comprises infusion tubes which are arranged in one-to-one correspondence with the centrifugal cups, the infusion tubes are positioned above the centrifugal cups,

the discharging mechanism comprises a plurality of groups of discharging components capable of pushing the centrifugal cups to turn over, and the discharging components are arranged in one-to-one correspondence with the centrifugal cups;

the waterway system comprises a first switching valve, the first switching valve is a three-way valve, a first interface of the first switching valve is connected with a transfusion tube of the centrifugal device, a second interface of the first switching valve is connected with an air inlet pipeline, a water inlet pipeline and a sample outlet pipeline, the air inlet pipeline and the water inlet pipeline are respectively provided with an air inlet valve and a water inlet valve, the sample outlet pipeline is provided with a sample outlet valve and a sample outlet pump, a third interface of the first switching valve is connected with a sample inlet pipeline, and the sample inlet pipeline is provided with a sample inlet valve.

2. An automatic centrifugal apparatus according to claim 1, wherein: the centrifugal mechanism further comprises a positioning disc positioned above the centrifugal disc and a centrifugal lifting cylinder for driving the positioning disc to lift, wherein the centrifugal lifting cylinder is installed at the upper end of the mounting bracket, and a positioning structure is arranged between the centrifugal disc and the positioning disc.

3. An automatic centrifugal apparatus according to claim 2, wherein: the positioning structure comprises a plurality of upper magnets arranged on the bottom surface of the positioning disc and a plurality of lower magnets arranged on the top surface of the centrifugal disc, wherein the upper magnets and the lower magnets are arranged in one-to-one correspondence, and the upper magnets and the lower magnets which are arranged correspondingly are homopolar magnets.

4. An automatic centrifugal apparatus according to claim 1, wherein: the sample feeding and discharging mechanism further comprises a sample feeding disc and a sample feeding lifting cylinder for driving the sample feeding disc to lift, the sample feeding lifting cylinder is mounted on the mounting bracket, and the infusion tube is arranged on the sample feeding disc.

5. An automatic centrifugal apparatus according to claim 1, wherein: the discharging mechanism is arranged below the centrifugal cup, the discharging assembly comprises a lifting rod and a discharging pushing cylinder, the outer side end of the lifting rod is hinged to the lower end of the mounting support, the inner side end of the lifting rod extends to the inner side of the centrifugal cup, the discharging pushing cylinder is connected with the lifting rod, and the discharging pushing cylinder stretches out and draws back to drive the inner side end of the lifting rod to move up and down along an arc line.

6. An automatic centrifugal apparatus according to claim 5, wherein: the inner side end of the lifting rod is provided with rollers, the centrifugal plates are provided with cup sleeves which are in one-to-one fit with and are used for fixing the centrifugal cups, the side surfaces of the cup sleeves are rotatably connected with the centrifugal plates, and sliding grooves corresponding to the rollers are formed in the side surfaces of the cup sleeves.

7. An automatic centrifugal apparatus according to claim 1, wherein: the air inlet pipeline is also connected with a pneumatic branch, the pneumatic branch is directly connected with an air source, the pneumatic branch is connected with a rotary driving piece of the centrifugal device, and the pneumatic branch is provided with a pneumatic valve and a pressure reducing valve.

8. An automatic centrifugal apparatus according to claim 1, wherein: a drainage branch is connected between the sample injection valve and the first switching valve, and a drainage valve is arranged on the drainage branch.

9. An automatic centrifugal apparatus according to claim 1, wherein: the first switching valve is connected with the infusion tube of the centrifugal device, the second switching valve is a three-way valve, a first interface of the second switching valve is connected with a first interface of the first switching valve, a second interface of the second switching valve is connected with the water inlet pipeline, and a third interface of the second switching valve is connected with the infusion tube of the centrifugal device.

10. An automatic centrifugal apparatus according to claim 1, wherein: the sample outlet valve is a three-way valve, a first interface of the sample outlet valve is connected with a second interface of the first switching valve, an air inlet pipeline and a water inlet pipeline, a second interface of the sample outlet valve is connected with an outlet end of the sample outlet pump, and a third interface of the sample outlet valve is connected with an inlet end of the sample outlet pump.