CN214334772U - BOD rapid determination instrument - Google Patents
BOD rapid determination instrument Download PDFInfo
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- CN214334772U CN214334772U CN202023328001.9U CN202023328001U CN214334772U CN 214334772 U CN214334772 U CN 214334772U CN 202023328001 U CN202023328001 U CN 202023328001U CN 214334772 U CN214334772 U CN 214334772U
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Abstract
The utility model belongs to the technical field of the environmental detection equipment, a BOD short-term test appearance is provided, including base and the injector and the sample tube of setting on the base, wherein, the sample tube sets up one side of injector, the injector includes: the device comprises a shell, a motor, a rotating shaft, a rotating disc, a sample cup fixing device, a return spring, a first driving device, a cleaning liquid container and a second driving device. The utility model provides a BOD rapid determination appearance, measurement accuracy is higher.
Description
Technical Field
The utility model relates to an environmental detection equipment technical field, concretely relates to BOD spot test appearance.
Background
The utility model with the publication number of CN209673712U provides a BOD rapid measuring instrument, which comprises a dissolved oxygen measuring module, a BOD microorganism measuring module and a processing module; the dissolved oxygen measuring module comprises a sample introduction unit and a cleaning unit; the sample introduction unit comprises a sample introduction device, a sample introduction pipe, a three-way branch, a peristaltic pump and a flow-through dissolved oxygen measuring instrument, wherein the sample introduction device is used for accommodating samples, the sample introduction pipe is used for sampling, and the three-way branch is communicated with the sample introduction pipe in sequence; the BOD microorganism measuring module comprises a constant temperature device, a branch of a gas-liquid mixing tee joint, a flow BOD microorganism sensor, a waste liquid pipe and a waste liquid barrel, wherein the constant temperature device is sequentially communicated with the flow dissolved oxygen measuring instrument; the other branch of the gas-liquid mixing tee is communicated with the air pump through an air pipe.
However, the OBD rapid measuring instrument has disadvantages in that:
continuous sampling was performed using a sample injector, as shown in FIG. 1. However, when the BOD measurement is performed on a plurality of samples by using this sampling method, since the sampling tube is not cleaned, the sample residue of the previous measurement sample adheres to the sampling tube, and the residue inevitably affects the measurement result of the next sample, thereby causing low measurement accuracy.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a BOD spot test appearance to improve measurement accuracy.
In order to achieve the above object, the utility model provides a BOD rapid determination appearance, including base and the injector and the sample tube of setting on the base, wherein, the sample tube sets up one side of injector, its characterized in that: the injector includes:
a housing having a hollow interior cavity;
the motor is fixedly arranged in the shell, and a power output shaft of the motor is provided with a driving bevel gear;
the rotating shaft is rotatably connected with the shell, a driven bevel gear meshed with the driving bevel gear is arranged at the bottom end of the rotating shaft, and the top end of the rotating shaft extends out of the shell;
the rotary disc is coaxially arranged with the rotating shaft, and the rotary disc is arranged at the top end of the rotating shaft and is fixedly connected with the rotating shaft;
the sample cup fixing device is provided with fixing grooves, a plurality of sample cup fixing devices are sequentially arranged at intervals around the rotating center line of the rotary disc, the side wall of the rotary disc is provided with a sliding hole, the sliding hole is in a step shape, one side of the sample cup fixing device is provided with a sliding rod, and the sample cup fixing device is connected with the rotary disc in a sliding mode through the sliding hole and the sliding rod;
the number of the reset springs is equal to that of the sample cup fixing devices, the reset springs correspond to the sample cup fixing devices one by one, the reset springs are sleeved on the sliding rods, two ends of the reset springs are respectively abutted against the sliding rods and the inner walls of the sliding holes, and the reset springs have the tendency that the sliding rods move towards a rotating shaft center line close to the rotary table in a natural state;
the first driving device is fixedly arranged at the top of the shell and is used for driving the sample cup fixing device facing the sample inlet pipe to move to the position right below the sample inlet pipe;
the side, facing the sample inlet pipe, of the turntable is transversely provided with a first sliding rail, and the cleaning liquid container is arranged on the first sliding rail in a sliding manner; and
and the second driving device is used for driving the cleaning liquid container to do reciprocating linear motion on the first slide rail.
Further, a flexible gasket is arranged in the fixing groove.
Further, the first driving device is an air cylinder, an electric telescopic rod or a hydraulic rod.
Further, the second driving device is an air cylinder, an electric telescopic rod or a hydraulic rod.
Furthermore, a first permanent magnet is arranged at the power output end of the second driving device, a second permanent magnet is arranged on one side, facing the second driving device, of the cleaning liquid container, and the magnetism of the opposite side of the first permanent magnet is opposite to that of the opposite side of the second permanent magnet.
Furthermore, two liquid level sensors are longitudinally arranged in the cleaning liquid container, and the cleaning liquid container is communicated with the cleaning liquid supply system through a pipeline.
The utility model has the advantages that:
the utility model provides a BOD rapid determination appearance, through setting up first drive arrangement and reset spring drive sample cup fixing device and making reciprocating linear motion in the below of advancing appearance pipe, make sample cup and washing liquid container move to the below of advancing appearance pipe in turn each other through setting up second drive arrangement drive washing liquid container simultaneously, thereby realized all can wasing advancing the appearance pipe before measuring at every turn, the influence of remaining to next measuring sample of the last measuring sample of having avoided, the measuring precision has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram showing the overall structure of a BOD rapid measuring instrument provided in the utility model with publication number CN 209673712U;
fig. 2 is a perspective view of a BOD rapid analyzer according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is an enlarged view at C shown in FIG. 3;
fig. 6 is an enlarged view at D shown in fig. 5.
Reference numerals:
100-base, 110-first slide rail, 111-slide groove, 120-second slide rail, 200-sample injector, 300-sample injection tube, 210-shell, 211-inner cavity 211, 220-motor, 221-driving bevel gear, 230-rotating shaft, 231-driven bevel gear, 240-rotating disc, 241-slide hole, 250-sample cup fixing device, 251-slide bar, 252-fixing groove, 253-flexible liner, 254-connecting part, 260-reset spring, 270-first driving device, 280-cleaning liquid container, 290-second driving device, 291-first permanent magnet and 292-second permanent magnet.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 2-6, the present invention provides a BOD rapid analyzer, which comprises a base 100, and a sample injector 200 and a sample tube 300 installed on the base 100, wherein the sample tube 300 is located at the right side of the sample injector 200. Specifically, the second slide rail 120 is disposed on the right side of the base 100, and the sampling tube 300 is slidably mounted on the second slide rail 120 and driven by the third driving device to reciprocate linearly up and down on the second slide rail 120.
The sample injector 200 includes a housing 210, a motor 220, a shaft 230, a turntable 240, a cup holder 250, a return spring 260, a first driver 270, a cleaning solution container 280, and a second driver 290.
Wherein the housing 210 has a hollow interior 211. The motor 220 is fixedly installed in the housing 210, and a drive bevel gear 221 is coaxially installed on a power output shaft of the motor 220. The bottom end of the rotation shaft 230 is inserted into the housing 210 and rotatably connected to the housing 210. And a driven bevel gear 231 is installed at the bottom end of the rotation shaft 230, and the driven bevel gear 231 is engaged with the driving bevel gear 221. The top end of the rotation shaft 230 extends to the outside of the housing 210. The rotating disk 240 is coaxially disposed with the rotating shaft 230, and the rotating disk 240 is disposed at the top end of the rotating shaft 230 and fixedly connected with the rotating shaft 230.
The number of the sample cup holders 250 is plural, and the plural sample cup holders 250 are sequentially spaced apart around the rotation center line of the turntable 240. The side wall of the turntable 240 is provided with a sliding hole 241, the length direction of the sliding hole 241 is along the radial direction of the rotating shaft 230, the sliding hole 241 is in a step shape, and the diameter of one end of the sliding hole 241 far away from the rotating center line of the turntable 240 is smaller. A slide bar 251 is fixedly disposed on one side of the sample cup fixing device 250, and the sample cup fixing device 250 is slidably connected to the rotary disk 240 through a slide hole 241 and the slide bar 251.
The number of the return springs 260 is equal to that of the sample cup fixing devices 250, and the return springs 260 are in one-to-one correspondence with the slide bars 251, and both ends of the return springs are respectively abutted against the inner walls of the slide bars 251 and the slide holes 241. Specifically, one end of the sliding rod 251 facing the rotation center line of the rotating disk 240 is provided with a limiting portion, one end of the return spring abuts against the limiting portion, and the other end abuts against the inner wall of the sliding hole 241. In a natural state, the return spring 260 tends to move the slide rod 251 toward the center line of the rotation shaft 230 of the turntable 240. The first driving device 270 is fixedly installed on the top of the housing 210, and the first driving device 270 is used for driving the sample cup fixing device 250 facing the sample inlet pipe 300 to move to a position right below the sample inlet pipe 300.
The first slide rail 110 is transversely disposed on a side of the turntable 240 facing the sample inlet tube 300, and the cleaning solution container 280 is slidably mounted on the first slide rail 110. Specifically, the top of the first slide rail 110 is provided with a slide groove 111, the slide groove 111 is in a convex shape, the bottom of the cleaning solution container 280 is provided with a connecting portion 254 adapted to the slide groove 111, and the connecting portion 254 is slidably inserted into the slide groove 111. The second driving means 290 is used for driving the cleaning solution container 280 to perform a reciprocating linear motion on the first slide rail 110. Specifically, the second driving means 290 is used to drive the cleaning solution container 280 to the right under the sampling tube 300 and to one side of the sampling tube 300.
Thus, in use, a sample cup with a sample therein is placed on the sample cup holder 250.
First, the second driving device 290 drives the cleaning solution container 280 to move to a position right below the sampling tube 300, and then the third driving device drives the sampling tube 300 to descend and extend into the cleaning solution container 280 to extract the cleaning solution. The subsequent processing procedure of the cleaning solution is the same as that of the utility model patent with the publication number of CN209673712U, and will not be described herein.
Then, the third driving means drives the loading tube 300 to ascend, and then the second driving means 290 drives the cleaning solution container 280 to one side of the loading tube 300.
Afterwards, motor 220 rotates, drives a sample cup to one side of advancing appearance pipe 300, and then first drive arrangement 270 drives this sample cup to advancing appearance pipe 300 under, and third drive arrangement drive advances appearance pipe 300 descends and stretches into the sample cup afterwards, draws sample liquid, and later the handling process to sample liquid is the same with the handling process of the utility model patent of grant publication No. CN209673712U, does not do too much the perusal here.
The above steps are repeated, so that a plurality of samples can be measured, and the sampling tube 300 is cleaned by using the cleaning solution before each sample is measured. Therefore, the influence of the sample residue of the last measurement on the next measurement is avoided, and the accuracy of the measurement data is improved.
In one embodiment, a flexible gasket 253 is mounted within the securing slot 252.
This configuration helps to avoid wear of the sample cup by the sample cup holder 250.
In one embodiment, the first driving device 270 is an air cylinder, an electric telescopic rod, or a hydraulic rod. In use, when the first drive 270 is extended, the first drive 270 pushes the sample cup under the loading tube 300, and when the first drive 270 is retracted, the sample cup holder 250 is pushed into place under the action of the return spring 260.
The first driving device 270 of this structure is simple in structure.
In one embodiment, the second driving device 290 is an air cylinder, an electric telescopic rod or a hydraulic rod. Specifically, the power output of the second driving means 290 is connected to the cleaning solution container 280. When the second driving means 290 is extended. The second driving means 290 pushes the cleaning solution container 280 to the lower side of the sampling tube 300, and when the second driving means 290 contracts, the second driving means 290 pulls the cleaning solution container 280 back to the side of the sampling tube 300.
The second driving device 290 of this structure is simple in structure.
In one embodiment, a first permanent magnet 291 is mounted at a power output end of the second driving means 290, a second permanent magnet 292 is mounted at a side of the cleaning solution container 280 facing the second driving means 290, and opposite sides of the first permanent magnet 291 and the second permanent magnet 292 are opposite in magnetism. This allows the second driving means 290 and the cleaning solution container 280 to be connected by the magnetic force of the first and second permanent magnets 291 and 292. When the cleaning solution container 280 is damaged, only the magnetic force of the first permanent magnet 291 and the second permanent magnet 292 needs to be cut off, and then the damaged cleaning solution container 280 can slide out from the end of the chute 111 far away from the second driving device 290 for replacement.
This configuration facilitates replacement of the cleaning solution container 280.
In one embodiment, two level sensors are disposed longitudinally within the cleaning solution container 280, and the cleaning solution container 280 is in communication with the cleaning solution supply system via a conduit.
The cleaning liquid supply system supplies the cleaning liquid into the cleaning liquid container 280 when the liquid level in the cleaning liquid container 280 is at the liquid level sensor at the lower position, and stops supplying the cleaning liquid into the cleaning liquid container 280 when the liquid level in the cleaning liquid container 280 is at the liquid level sensor at the higher position.
This configuration helps control the cleaning solution level within the cleaning solution container 280.
The utility model provides a BOD rapid determination appearance, through setting up first drive arrangement and reset spring drive sample cup fixing device and making reciprocating linear motion in the below of advancing appearance pipe 300, make sample cup and washing liquid container move to the below of advancing appearance pipe 300 in turn each other through setting up second drive arrangement drive washing liquid container simultaneously, thereby realized all can wasing advancing appearance pipe 300 before measuring at every turn, the influence of remaining to the next measuring sample of the last measuring sample of having avoided, the measuring precision has been improved. Meanwhile, the cleaning liquid and the sample are both extracted by the sample inlet pipe 300, and the cleaning liquid pipe is not required to be independently extracted.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. The utility model provides a BOD short-term test appearance, includes the base and sets up injector and the sample tube on the base, wherein, the sample tube sets up one side of injector, its characterized in that: the injector includes:
a housing having a hollow interior cavity;
the motor is fixedly arranged in the shell, and a power output shaft of the motor is provided with a driving bevel gear;
the rotating shaft is rotatably connected with the shell, a driven bevel gear meshed with the driving bevel gear is arranged at the bottom end of the rotating shaft, and the top end of the rotating shaft extends out of the shell;
the rotary disc is coaxially arranged with the rotating shaft, and the rotary disc is arranged at the top end of the rotating shaft and is fixedly connected with the rotating shaft;
the sample cup fixing device is provided with fixing grooves, a plurality of sample cup fixing devices are sequentially arranged at intervals around the rotating center line of the rotary disc, the side wall of the rotary disc is provided with a sliding hole, the sliding hole is in a step shape, one side of the sample cup fixing device is provided with a sliding rod, and the sample cup fixing device is connected with the rotary disc in a sliding mode through the sliding hole and the sliding rod;
the number of the reset springs is equal to that of the sample cup fixing devices, the reset springs correspond to the sample cup fixing devices one by one, the reset springs are sleeved on the sliding rods, two ends of the reset springs are respectively abutted against the sliding rods and the inner walls of the sliding holes, and the reset springs have the tendency that the sliding rods move towards a rotating shaft center line close to the rotary table in a natural state;
the first driving device is fixedly arranged at the top of the shell and is used for driving the sample cup fixing device facing the sample inlet pipe to move to the position right below the sample inlet pipe;
the side, facing the sample inlet pipe, of the turntable is transversely provided with a first sliding rail, and the cleaning liquid container is arranged on the first sliding rail in a sliding manner; and
and the second driving device is used for driving the cleaning liquid container to do reciprocating linear motion on the first slide rail.
2. The BOD rapid analyzer of claim 1, wherein: and a flexible gasket is arranged in the fixing groove.
3. The BOD rapid analyzer of claim 1, wherein: the first driving device is an air cylinder, an electric telescopic rod or a hydraulic rod.
4. The BOD rapid analyzer of claim 1, wherein: the second driving device is an air cylinder, an electric telescopic rod or a hydraulic rod.
5. The BOD rapid analyzer of claim 4, wherein: the power output end of the second driving device is provided with a first permanent magnet, one side of the cleaning liquid container facing the second driving device is provided with a second permanent magnet, and the opposite sides of the first permanent magnet and the second permanent magnet are opposite in magnetism.
6. The BOD rapid analyzer according to any of claims 1 to 5, characterized in that: two liquid level sensors are longitudinally arranged in the cleaning liquid container, and the cleaning liquid container is communicated with the cleaning liquid supply system through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328001.9U CN214334772U (en) | 2020-12-31 | 2020-12-31 | BOD rapid determination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328001.9U CN214334772U (en) | 2020-12-31 | 2020-12-31 | BOD rapid determination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214334772U true CN214334772U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023328001.9U Active CN214334772U (en) | 2020-12-31 | 2020-12-31 | BOD rapid determination instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214334772U (en) |
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2020
- 2020-12-31 CN CN202023328001.9U patent/CN214334772U/en active Active
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