CN209043804U - A kind of nephelometer - Google Patents

Abstract

The utility model discloses a kind of nephelometers, including skeleton, transmission system, detection system and controller, the skeleton is made of left plate, right side plate, bottom plate, preceding connecting plate and rear connecting plate, the transmission system includes stepper motor, transmission gear, screw rod and U-shaped arm, the detection system includes transmitter and receiver, and controller is electrically connected with stepper motor, transmitter and receiver respectively.Nephelometer provided by the utility model, by the movement of U-shaped arm, receiver and transmitter above and below U-shaped arm read information, calculate the turbidity of liquid in microwell plate micropore, and then learn microorganism growing state inside each hole of microwell plate, simply and easily learn the information of microorganism in micropore；Nephelometer structure is simple, and small volume is easy to use, can effectively integrate in liquid relief work system, and the detection and transfer of microorganism are completed in conjunction with liquor removing workstation.

Description

A kind of nephelometer

Technical field

The utility model relates to a kind of nephelometer more particularly to a kind of nephelometers for microorganism measurement.

Background technique

Nephelometer is the device for measuring liquid turbidity, there is scattering type, transmitted light formula and transmitted scattered light formula etc., is referred to as light Formula nephelometer.Its principle is, when light is irradiated on liquid level, the mutual ratio of incident intensity, transmitted light intensity, scattered light intensity There are certain correlativities between water sample turbidity, pass through measurement transmitted light intensity, scattered light intensity and incident intensity or transmitted light The turbidity of water sample is measured with the ratio of scattered light intensity by force.Optical profile type nephelometer has for laboratory, also it is useful on site into What row automatically continuously measured.

In Experiment on Microbiology, it is often necessary to detect, obtain to microorganism of the culture on microwell plate in each micropore Know and after the upgrowth situation of microorganism, needs to turn the microorganism grown in hole location using liquid relief work system on microwell plate It moves, existing microorganism upgrowth situation measurement usually uses microplate reader or other special equipments, and microplate reader is to each hole of microwell plate Position is read out, and microorganism growing state is then determined according to the result of reading.But when culture has in anaerobism ring Border or in the case that other will reduce exposure duration to the greatest extent, microplate reader read and then carry out to shift this process and may cause The destruction of culture, nephelometer can overcome this defect, and still, existing nephelometer small product size is all relatively large, structure It is complicated or small in size, microwell plate cannot be read, it is difficult to be integrated with the equipment for carrying out liquid relief work.

Utility model content

In order to solve problem above, the purpose of the utility model is to provide a kind of nephelometer, the nephelometer small volume, knots Structure is simple, can detect each micropore inner case in microorganism microwell plate automatically, and whole with the equipment progress of progress liquid relief work It closes.

In order to achieve the goal above, the technical solution adopted in the utility model:

A kind of nephelometer, including skeleton, transmission system, detection system and controller；Skeleton is the support of nephelometer entirety Structure, transmission system drive detection system mobile, and detection system is used to detect the turbidity of surveyed liquid, and controller controls turbidity The operation of meter and the turbidity for calculating liquid.

The skeleton includes left plate, right side plate, bottom plate, preceding connecting plate and rear connecting plate, the transmission system, detection system System and controller are installed in skeleton.

The transmission system includes stepper motor, transmission gear, screw rod and U-shaped arm, and the stepper motor is located on bottom plate, The screw rod is mounted between left plate and right side plate, and the stepper motor passes through U by transmission gear connecting screw, the screw rod Threaded hole on the downside of arm is threadedly coupled with U-shaped arm；Rotary motion is transformed to move along a straight line by screw rod, movement accuracy Height, and have very big reduction of speed ratio, structure is simple, easily manufactured, stable working, and noiseless can transmit very big axial force, band It is mobile to move U-shaped arm.

The detection system includes transmitter and receiver, and the transmitter and receiver are separately mounted to the upper of U-shaped arm On lower wall bar, receiver receives the signal that transmitter issues.

The controller is mounted on bottom plate, and controller is electrically connected with stepper motor, transmitter and receiver respectively, control Device processed is conventional single-chip microcontroller, is implanted into the operation of process control stepper motor, transmitter and receiver.

When work, the container of surveyed liquid is placed between the upper lower wall bar of U-shaped arm, this container is transparent vessel, transparent vessel For microwell plate or other, U-shaped arm moves under the drive of stepper motor, when reaching surveyed liquid top, the light of transmitter sending Line is received by the receiver after the liquid in container, the signal received according to receiver, and liquid is muddy in controller calculating hole Turbidity, and then learn microorganism growing state inside microwell plate.

Further, being equipped with hood on the upside of the skeleton；To the processing of intraskeletal member shades light, keep receiver suitable The signal for receiving transmitter sending sharply prevents ambient interference effect receiver from receiving the light that transmitter issues, in turn Influence the judgement to surveyed liquid turbidity.

Further, the transmission system further includes gag lever post, the through-hole that the gag lever post passes through on the downside of U-shaped arm is fixed It is mounted between left plate and right side plate；Gag lever post move U-shaped arm can only along the length direction of screw rod, prevent U-shaped arm with spiral shell Bar rotation, makes U-shaped arm accurately scan the liquid between U-shaped arm.

Further, the detection system further includes initial level sensor, the initial level sensor connects after being mounted on It is electrically connected on fishplate bar close to left side Board position, initial level sensor and controller；When not starting to read liquid, at the beginning of U-shaped arm Beginningization returns at initial level sensor, receives the signal of transmitter without receiver under plate in no light and illumination, is changed by controller It calculates, position the zero point of coloration and works to the last minute, be used for subsequent calculations illumination transmissivity.

Further, the right side plate is equipped with USB interface, the USB interface connects controller；USB interface is used for Nephelometer and external equipment are connected and communicate with.

Further, the transmission gear is reduction gearing；Convert the high-speed rotation of stepper motor through transmission gear Become slowly running for screw rod.

Further, the transmitter carries out transmitting light collimation or band using 600-605nm nm LED and lens group There is the 650nm semiconductor laser of collimation lens, the receiver uses CdS photo resistance.

The utility model has the beneficial effects that

Nephelometer provided by the utility model, structure is simple, small volume, easy to use, can effectively integrate liquid relief work Make in system, the detection and transfer of microorganism are completed in conjunction with liquor removing workstation；

Nephelometer provided by the utility model places the microwell plate of measurement between the upper lower wall bar of U-shaped arm, passes through U-shaped arm Mobile, receiver and transmitter above and below U-shaped arm read information, and controller calculates the turbidity of liquid in microwell plate micropore, into And learn microorganism growing state inside each micropore of microwell plate, simply and easily learn the growth information of microorganism in micropore, And then it facilitates researcher and screens microorganism.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the top view of the utility model；

Fig. 3 is the schematic diagram that the utility model is equipped with hood；

Fig. 4 is the schematic diagram that the utility model is mounted on liquor removing workstation；

In figure: 1, skeleton；11, left plate；12, right side plate；13, bottom plate；14, preceding connecting plate；15, rear connecting plate；2, it passes Dynamic system；21, stepper motor；22, transmission gear；23, screw rod；24, U-shaped arm；25, gag lever post；3, detection system；31, emit Device；32, receiver；33, initial level sensor；4, controller；5, hood；6, USB interface.

Specific embodiment

It is practical new to this with reference to the accompanying drawing in order to keep the purpose of this utility model, technical solution and advantage clearer Type is further elaborated.In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "top", "bottom", "inner", "outside" is orientation based on the figure or position Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Embodiment 1

A kind of nephelometer, as shown in Figs. 1-2, including skeleton 1, transmission system 2, detection system 3 and controller 4.

Skeleton 1 is made of left plate 11, right side plate 12, bottom plate 13, preceding connecting plate 14 and rear connecting plate 15, transmission system 2, Detection system 3 and controller 4 are installed in skeleton 1.

Transmission system 2 includes stepper motor 21, transmission gear 22, screw rod 23 and U-shaped arm 24, and stepper motor 21 is located at bottom plate On 13, screw rod 23 is mounted between left plate 11 and right side plate 12, and stepper motor 21 passes through 22 connecting screw 23 of transmission gear, spiral shell The threaded hole that bar 23 passes through U-shaped 24 downside of arm is threadedly coupled with U-shaped arm 24.

Detection system 3 includes transmitter 31 and receiver 32, and transmitter 31 and receiver 32 are separately mounted to U-shaped arm 24 On upper lower wall bar, receiver 32 receives the signal that transmitter 31 issues.

Controller 4 is installed on base 13, and controller 4 is electrical with stepper motor 21, transmitter 31 and receiver 32 respectively Connection；Controller is conventional single-chip microcontroller, is implanted into the turbidimetric operation of process control, and the present embodiment is selected AtmelATmega328p formula single-chip microcontroller.

Embodiment 2

A kind of nephelometer, as shown in Figs 1-4, the present embodiment on the basis of embodiment 1, moreover: on skeleton 1 Side is equipped with hood 5；Transmission system 2 further includes gag lever post 25, and the through-hole that gag lever post 25 passes through U-shaped 24 downside of arm is fixedly mounted on Between left plate 11 and right side plate 12；Detection system 3 further includes initial level sensor 33, and initial level sensor 33 connects after being mounted on Close to 11 position of left plate on plate 15, initial level sensor 33 is electrically connected with controller 4；Right side plate 12 is equipped with USB interface 6, USB interface 6 connects controller 4；Transmission gear 22 is reduction gearing；Transmitter 31 is using the 650nm with collimation lens half Conductor laser, receiver 32 use CdS photo resistance.

In order to better understand the utility model, primary complete description is made to the working principle of the utility model below, The nephelometer of the present embodiment is mounted on the lower end of liquor removing workstation:

1., microwell plate is mounted on to liquor removing workstation, microwell plate is located between the upper lower wall bar of turbidimetric U-shaped arm 24.

2., turbidimetric U-shaped arm 24 initialize return at initial level sensor 33 first, microwell plate does not block transmitting at this time Device 31 and receiver 32；Then transmitter 31 does not work, and the signal received is transmitted to controller 4, controller 4 by receiver 32 Signal at this time is set to transmission zero point；Then transmitter 31 works, and receiver 32 receives the optical signal that transmitter 31 emits, And the optical signal is transmitted to controller 4, optical signal at this time is set to transmission and worked to the last minute by controller 4；Transmission is worked to the last minute and zero Put the transmitance for calculating liquid.

3., U-shaped arm 24 moved on screw rod 23 under the drive of stepper motor 21, when under one hole of the every arrival of U-shaped arm 24 Fang Hou, the light signal that receiver 32 issues the transmitter 31 received are transferred to controller 4, controller 4 by the signal with Zero point and working to the last minute is made comparisons, and is calculated as the transmissivity in the hole, is then convert into OD value and is transferred to the upper of liquor removing workstation Position machine program.

4., repeat step 1. -3. nephelometer complete reading to entire microwell plate, learn micro- in each micropore in microwell plate The upgrowth situation of biology.

After nephelometer has been read, the microorganism on microwell plate is shifted by liquor removing workstation, it should be noted that on Stating nephelometer and being mounted on the lower end of liquor removing workstation is a kind of mounting means, U-shaped its purpose is to be fixed on microwell plate It is convenient that micropore in microwell plate is read out between the upper lower wall bar of arm.Nephelometer is not limited only in conjunction with liquor removing workstation, But all the liquid read must will be needed to be placed between the upper lower wall bar of U-shaped arm in conjunction with every kind of equipment.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (7)

1. a kind of nephelometer, it is characterised in that: including skeleton (1), transmission system (2), detection system (3) and controller (4)；

The skeleton (1) includes left plate (11), right side plate (12), bottom plate (13), preceding connecting plate (14) and rear connecting plate (15), The transmission system (2), detection system (3) and controller (4) are installed in skeleton (1)；

The transmission system (2) includes stepper motor (21), transmission gear (22), screw rod (23) and U-shaped arm (24), the stepping Motor (21) is located on bottom plate (13), and the screw rod (23) is mounted between left plate (11) and right side plate (12), the stepping electricity Machine (21) by transmission gear (22) connecting screw (23), the screw rod (23) pass through threaded hole on the downside of U-shaped arm (24) with it is U-shaped Arm (24) is threadedly coupled；

The detection system (3) includes transmitter (31) and receiver (32), and the transmitter (31) and receiver (32) are respectively It is mounted on the upper lower wall bar of U-shaped arm (24), receiver (32) receives the signal that transmitter (31) issue；

The controller (4) is mounted on bottom plate (13), controller (4) respectively with stepper motor (21), transmitter (31) and connect Device (32) are received to be electrically connected.

2. a kind of nephelometer according to claim 1, it is characterised in that: be equipped with hood (5) on the upside of the skeleton (1).

3. a kind of nephelometer according to claim 1, it is characterised in that: the transmission system (2) further includes gag lever post (25), the through-hole that the gag lever post (25) passes through on the downside of U-shaped arm (24) is fixedly mounted between left plate (11) and right side plate (12).

4. a kind of nephelometer according to claim 1, it is characterised in that: the detection system (3) further includes that initial bit passes Sensor (33), the initial level sensor (33) are mounted on rear connecting plate (15) close to left plate (11) position, and initial bit passes Sensor (33) and controller (4) are electrically connected.

5. a kind of nephelometer according to claim 1, it is characterised in that: the right side plate (12) is equipped with USB interface (6), USB interface (6) connection controller (4).

6. a kind of nephelometer according to claim 1, it is characterised in that: the transmission gear (22) is reduction gearing.

7. a kind of nephelometer according to claim 1, it is characterised in that: the transmitter (31) uses 600-605nmLED And lens group carries out transmitting light collimation or the 650nm semiconductor laser with collimation lens, the receiver (32) uses CdS photo resistance.