CN216870095U - Biological sampling device and limit switch thereof - Google Patents
Biological sampling device and limit switch thereof Download PDFInfo
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- CN216870095U CN216870095U CN202121215926.4U CN202121215926U CN216870095U CN 216870095 U CN216870095 U CN 216870095U CN 202121215926 U CN202121215926 U CN 202121215926U CN 216870095 U CN216870095 U CN 216870095U
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- sample containing
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Abstract
The application discloses biological sampling device and limit switch thereof, biological sampling device includes a flourishing appearance main part and a sampling subassembly, wherein the flourishing appearance main part forms two at least flourishing appearance spaces for splendid attire liquid, flourishing appearance main part still forms two at least intercommunication mouths, wherein every the intercommunication mouth respectively with one flourishing appearance space intercommunication. The sample containing main body is also provided with at least two insertion ports, wherein each insertion port is communicated with the sample containing space, the sampling assembly comprises at least two parallel rod-shaped piston members and a driving member, the piston members can synchronously and slidably cling to the inner wall forming the sample containing space between the insertion ports and the communication ports, and the sample containing space between the communication ports and the end parts of the piston members extending into the sample containing space is defined as an air pressure generating space.
Description
Technical Field
The utility model relates to a sampling assembly, in particular to a biological sampling device and a limit switch thereof.
Background
The detection of biological activity is applied in many fields, especially in the detection of water samples. Water is essential to human life, and most drinking water sources today are through sewage treatment. There are many toxic and harmful substances in sewage, and the toxic and harmful substances have a great influence on the activity of some microorganisms, so that sewage treatment manufacturers are required to detect the toxic and harmful substances in the sewage after the sewage is treated.
Generally, when detecting, at least one contrast water sample needs to be provided for a water sample to be detected. And adding the same amount of detection bacteria into the contrast water sample and the water sample to be detected.
When the detection bacteria are added, the detection bacteria liquid is required to be added into the water sample to be detected and the comparison water sample through the sampling component. In order to ensure the consistency of the adding time and the adding amount of the added detection bacteria. It is usually necessary to add equal amounts of detection bacteria to the water sample to be detected and the comparison water sample at the same time. However, the existing sampling component is separately performed during sampling and adding detection bacteria, so that the adding time and the adding amount of the detection bacteria are inconsistent, and the detection of the biological toxicity of the subsequent water sample to be detected is influenced.
SUMMERY OF THE UTILITY MODEL
An advantage of the present invention is to provide a biological sampling device and a limit switch thereof, wherein the biological sampling device can simultaneously sample, thereby preventing temporal inconsistency between the withdrawn liquid to be measured and the withdrawn contrast liquid.
Another advantage of the present invention is to provide a biological sampling device and a limit switch thereof, wherein the biological sampling device can ensure that the amounts of the liquid to be measured and the contrast liquid are the same when sampling.
Another advantage of the present invention is to provide a biological sampling device and a limit switch thereof, wherein the biological sampling device is provided with a limit member to prevent the biological sampling member from being damaged due to excessive movement.
Another advantage of the present invention is to provide a biological sampling apparatus and a limit switch thereof, wherein the biological sampling apparatus can ensure equal and simultaneous sampling, thereby ensuring accuracy of subsequent detection and reducing detection errors caused by inconsistency of sampling amount and sampling time.
Another advantage of the present invention is to provide a biological sampling device and a limit switch thereof, wherein the biological sampling device has a simple structure and is manufactured at a low cost.
To achieve at least one of the above advantages, the present invention provides a biological sampling device, comprising:
the sample containing main body is provided with at least two sample containing spaces for containing liquid, and at least two communicating ports, wherein each communicating port is communicated with one sample containing space. The sample containing body is also provided with at least two insertion ports, wherein each insertion port is communicated with the sample containing space;
a sampling assembly comprising at least two parallel rod-like piston members and a drive member, said piston members being synchronously slidably abutted against an inner wall forming said sample containing space between said insertion port and said communication port to define said sample containing space between said communication port and an end of said piston member projecting into said sample containing space as an air pressure generating space.
According to an embodiment of the utility model, the sampling assembly comprises a mounting body, wherein the other end of each piston member opposite to the end extending into the sample receiving space is fixed to the mounting body, wherein the mounting body is movably connected to the drive member.
According to an embodiment of the present invention, the biological sampling device includes a curb rail, wherein the mounting body is slidably disposed on the curb rail.
According to an embodiment of the present invention, the driving member includes a driving screw and a driving motor, the driving screw is rotatably connected to the driving motor so as to be driven by the driving motor to rotate, an outer wall of the driving screw is provided with a thread, the mounting body is provided with a corresponding thread channel, wherein the driving screw is threadedly connected to an inner wall of the mounting body forming the thread channel, so that when the driving motor is started, the driving screw can drive the mounting body to slide along the limit rail.
According to an embodiment of the present invention, the biological sampling device comprises a limit switch, wherein the limit switch comprises a shaped disc and a pair of limit arms, wherein the shaped disc is configured to be non-circular in a top view, the pair of limit arms are symmetrically configured on a path of rotation of the shaped disc, each of the limit arms is configured to be fixedly rotatably disposed on a limit body, the shaped disc is rotatably connected to an output shaft of the driving motor, one end of the driving screw is fixed to the shaped disc, and the other end of the driving screw is configured to be threadedly connected to an inner wall forming the threaded passage on the mounting body.
According to an embodiment of the present invention, the driving motor is implemented as a servo motor
According to another aspect of the present invention, to achieve at least one of the above advantages, the present invention provides a limit switch including a shaped disc and a pair of limit arms, wherein a top view of the shaped disc is configured to be non-circular, the pair of limit arms are symmetrically disposed on a path of rotation of the shaped disc, each of the limit arms is fixedly rotatably disposed on a limit body, the shaped disc is rotatably connected to an output shaft of a driving motor, one end of a driving screw rotated by the driving motor is fixed to the shaped disc, and the other end of the driving screw is configured to be screwed to an inner wall forming the threaded passage of the mounting body.
Drawings
Fig. 1 shows a schematic structural view of a biological sampling device according to the present invention.
Fig. 2 is a schematic view showing a partial structure of a limit switch of the biological sampling apparatus of the present invention.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 2, a biological sampling device according to a preferred embodiment of the present invention will be described in detail below, wherein the biological sampling device includes a sample holding body 10, wherein the sample holding body 10 forms at least two sample holding spaces 101 for holding liquid.
The sample holding body 10 further forms at least two communication ports 102, wherein each communication port 102 is respectively communicated with one sample holding space 101. The sample holding body 10 further forms at least two insertion ports 103, wherein each insertion port 103 is provided to communicate with the sample holding space 101. The biological sampling device also includes a sampling assembly 20. The sampling assembly 20 includes at least two parallel and rod-like piston members 21. The sampling assembly 20 also includes a drive member 22. The piston member 21 is synchronously slidably abutted against the inner wall forming the sample holding space 101 between the insertion port 103 and the communication port 102 to define the sample holding space 101 between the communication port 102 and the end of the piston member 21 projecting into the sample holding space 101 as an air pressure generating space 1011.
It will be understood that when the communication port 102 is extended into the liquid to be taken, the driving member 22 can drive at least two piston members 21 of the sampling assembly 20 to move synchronously, so that the piston members 21 can simultaneously form a negative pressure in the air pressure generating space 1011.
It is understood that since a negative pressure is formed in the gas pressure generating space 1011, the liquid to be taken can flow from the communication port 102 to the gas pressure generating space 1011 and be held in the gas pressure generating space 1011.
Preferably, in one embodiment, the volumes formed by the air pressure generating spaces 1011 may be the same. In yet another embodiment, the volume formed by the air pressure generating space 1011 may be different. That is, the user can set the size of the sample holding space 101 according to the sampling requirement. For example, when the volume of the liquid to be taken out is required to be uniform, the volume of the sample holding space 101 may be set to be uniform. When the volume of the liquid to be taken out is required to be inconsistent and a predetermined ratio is required, the volume of the sample holding space 101 may be set to a ratio of a predetermined size.
Further, the sampling assembly 20 includes a mounting body 23, wherein the other end of each piston member 21 opposite to the end extending into the sample containing space 101 is fixed to the mounting body 23, and wherein the mounting body 23 is movably connected to the driving member 22, so that each piston member 21 can be driven by the mounting body 23 to synchronously slide when the mounting body 23 is driven by the driving member 22. This simplifies the structure of the entire biological sampling member and reduces the manufacturing cost.
The biological sampling device includes a curb rail 30, wherein the mounting body 23 is slidably disposed on the curb rail 30. It will be appreciated that the curb rails 30 are provided with sliding grooves, wherein a projection is formed on the mounting body 23 and is slidably received in the sliding groove, so that the mounting body 23 can only slide along the curb rails 30 but cannot rotate.
In one embodiment, the drive member 22 includes a drive screw 221 and a drive motor 222. The driving screw 221 is rotatably connected to the driving motor 222 so as to be rotated by the driving motor 222. The outer wall of the driving screw 221 is provided with threads. The mounting body 23 is provided with a corresponding threaded channel, wherein the driving screw 221 is threaded on the inner wall of the mounting body 23 forming the threaded channel, so that when the driving motor 222 is started, the driving screw 221 can drive the mounting body 23 to slide along the limiting guide rail 30, and further the volume of the air pressure generating space 1011 can be adjusted.
It is understood that, when the volume of the air pressure generation space 1011 changes, if the communication port 102 is extended into the liquid to be taken, the amount of the liquid taken changes with the change in the volume of the air pressure generation space 1011.
In another embodiment, the biological sampling device includes a limit switch 40, wherein the limit switch 40 includes a contoured disk 41 and a pair of limit arms 42, wherein a top view of the contoured disk 41 is configured to be non-circular. A pair of the stopper arms 42 are symmetrically disposed on a path in which the profile plate 41 rotates. Each of the stopper arms 42 may be rotatably fixedly provided to a stopper body 43. By adjusting the angle at which each of the stopper arms 42 engages with the profile plate 41, the angle at which the profile plate 41 rotates can be restricted. It is worth mentioning that the positioning of the shaped disc 41 can be achieved by a braking mechanism, i.e. the shaped disc 41 can be fixed to the stop body 43 by a braking mechanism.
And the shaped disc 41 is rotatably connected to an output shaft of the driving motor 222, one end of the driving screw 221 is fixed to the shaped disc 41, and the other end of the driving screw 221 is provided to be screwed to an inner wall forming the screw passage on the mounting body 23.
It can be understood that by controlling the angle of engagement between the shaped disc 41 and the limit arm 42, the amplitude of movement of the piston member 21 can be limited, and the volume of the air pressure generating space 1011 can be controlled, thereby controlling the amount of liquid taken out.
In order to make the amount of liquid taken more precise, the drive motor is implemented as a servomotor.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (7)
1. A biological sampling device, comprising:
the sample containing body is provided with at least two sample containing spaces for containing liquid, at least two communication ports, at least two insertion ports and at least two sample receiving holes, wherein each communication port is communicated with one sample containing space;
a sampling assembly comprising at least two parallel rod-like piston members and a drive member, said piston members being synchronously slidably abutted against an inner wall forming said sample containing space between said insertion port and said communication port to define said sample containing space between said communication port and an end of said piston member projecting into said sample containing space as an air pressure generating space.
2. The biological sampling device of claim 1, wherein the sampling assembly includes a mounting body, wherein each of the piston members is secured to the mounting body at an end opposite the end extending into the sample receiving space, and wherein the mounting body is movably coupled to the drive member.
3. The biological sampling device of claim 2, wherein the biological sampling device includes a curb rail, and wherein the mounting body is slidably disposed on the curb rail.
4. The biological sampling device of claim 3, wherein the driving member comprises a driving screw and a driving motor, the driving screw is rotatably connected to the driving motor so as to be driven by the driving motor to rotate, the outer wall of the driving screw is provided with threads, the mounting body is provided with a corresponding threaded channel, and the driving screw is threadedly connected to the inner wall of the mounting body forming the threaded channel so that the driving screw can drive the mounting body to slide along the position-limiting guide rail when the driving motor is started.
5. The biological sampling device of claim 4, wherein the biological sampling device comprises a limit switch, wherein the limit switch comprises a shaped disc and a pair of limit arms, wherein the shaped disc is configured to be non-circular in plan view, the pair of limit arms are symmetrically disposed on a path of rotation of the shaped disc, each of the limit arms is rotationally fixedly disposed on a limit body, the shaped disc is rotationally coupled to the output shaft of the drive motor, one end of the drive screw is fixed to the shaped disc, and the other end of the drive screw is threadedly coupled to the mounting body.
6. A biological sampling device according to claim 4 or 5, wherein the drive motor is implemented as a servo motor.
7. A limit switch for a biological sampling device, the limit switch comprising a disk and a pair of limit arms, wherein a top view of the disk is non-circular, the pair of limit arms are symmetrically disposed on a path of rotation of the disk, each of the limit arms is fixedly rotatably disposed on a limit body, the disk is rotatably connected to an output shaft of a drive motor, one end of a drive screw rotated by the drive motor is fixed to the disk, and the other end of the drive screw is threadedly coupled to the mounting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121215926.4U CN216870095U (en) | 2021-06-02 | 2021-06-02 | Biological sampling device and limit switch thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121215926.4U CN216870095U (en) | 2021-06-02 | 2021-06-02 | Biological sampling device and limit switch thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216870095U true CN216870095U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121215926.4U Active CN216870095U (en) | 2021-06-02 | 2021-06-02 | Biological sampling device and limit switch thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216870095U (en) |
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2021
- 2021-06-02 CN CN202121215926.4U patent/CN216870095U/en active Active
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