Flow calibrating device of planktonic bacteria sampler

Abstract

The utility model relates to the field of planktonic bacteria samplers, and discloses a flow calibrating device of a planktonic bacteria sampler, which comprises an electronic flowmeter and a connecting mechanism, one side of the front end of the electronic flowmeter is fixedly provided with a placing plate, the connecting mechanism comprises a mounting block and a fixing pipe, the middle position of the upper end of the mounting block is rotatably provided with a rotating column, and the rotating column is fixedly connected with the electronic flowmeter. A telescopic pipe is fixedly arranged at the front end of the fixed pipe, a first connecting pipe is fixedly arranged at the front end of the telescopic pipe, a connecting seat is fixedly arranged at the lower end of the first connecting pipe, a bearing is rotationally arranged at the position, close to the telescopic pipe, of the outer side of the fixed pipe, and a movable pipe is fixedly arranged at the inner end of the bearing. According to the utility model, when a plurality of planktonic bacteria samplers need to be measured in sequence, the movable pipe can be rotated to connect the flange with the exhaust hole of another planktonic bacteria sampler, the valve of the fixed pipe is closed, and the valve of the movable pipe is opened, so that the time of repeated measurement is shortened, and continuous flow measurement by a user is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plankton bacteria sampler, especially to a flow calibration device of plankton bacteria sampler. BACKGROUND

[0002] The plankton bacteria sampler is a device for monitoring microorganisms in the air, especially bacteria and fungi. It captures microorganisms in the air on the culture medium by inhaling a certain amount of air for subsequent analysis and culture. Such devices are of great significance in environmental monitoring, pharmaceuticals, food safety and hospital infection control. Different research or detection projects often need to be compared under the same flow conditions, and the flow calibration device can ensure the comparability of each sampling.

[0003] The inventor found that the conventional flow calibration device can only detect one plankton bacteria sampler at a time, which leads to low efficiency, especially when multiple samplers need to be calibrated at the same time. Moreover, the connecting pipe cannot be adjusted according to the position of the plankton bacteria sampler, which may cause inconvenience and affect the accuracy of flow measurement.

[0004] Therefore, the skilled in the art provides a flow calibration device of plankton bacteria sampler to solve the problems in the background. SUMMARY

[0005] The utility model discloses a flow calibration device of plankton bacteria sampler, which can detect multiple plankton bacteria samplers at a time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A flow calibration device of plankton bacteria sampler, comprising an electronic flowmeter and a connecting mechanism, the electronic flowmeter is fixedly provided with a placing plate on one side of the front end, the connecting mechanism comprises a mounting block and a fixed pipe, a rotating column is rotatably arranged at the upper end of the mounting block, a motor is fixedly arranged on one side of the upper end of the mounting block, a belt pulley is fixedly arranged on the output end of the motor and the outer side of the rotating column, and a connecting belt is connected between the two belt pulleys.

[0008] A No. 1 flange is fixedly arranged on the outer side of the rear end of the fixed pipe, an extension pipe is fixedly arranged at the front end of the fixed pipe, a No. 1 connecting pipe is fixedly arranged at the front end of the extension pipe, a connecting seat is fixedly arranged at the lower end of the No. 1 connecting pipe, a bearing is rotatably arranged on the outer side of the extension pipe of the fixed pipe, and a movable pipe is fixedly arranged in the inner end of the bearing.

[0009] Further, the mounting block is located on one side of the electronic flow meter, and the fixed pipe is placed in a hole on one side of the electronic flow meter.

[0010] Further, the first flange is fixedly connected with one side of the electronic flow meter, and the upper end of the rotating column is fixedly connected with the lower end of the connecting seat.

[0011] Further, the movable pipe is movably arranged above the mounting block, and the movable pipe is placed on the upper end of the placing plate.

[0012] Further, the connecting seat is rotatably arranged above the mounting block, and the upper end of the fixed pipe and the upper end of the movable pipe are fixedly provided with valves.

[0013] Further, the first connecting pipe and the movable pipe are fixedly provided with connecting flanges on the outer sides.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] The utility model discloses a kind of flow verification devices of plankton sampler, electronic flow meter is prior art, the temperature change when gas flows through thermal element is measured to calculate flow, heating element keeps constant temperature, gas flows away heat, resulting in heating element temperature reduction, temperature difference is proportional to gas mass flow, it is converted into flow value by circuit, calculation formula is flow=calibration coefficient*temperature difference, when needing to connect fixed pipe and electronic flow meter, first, the position without the first flange outside fixed pipe is placed in the hole of electronic flow meter, then the first flange is screwed into bolt, ensure the good sealing between electronic flow meter and fixed pipe, avoid gas leakage phenomenon, to enhance the accuracy of measurement, after starting motor, connecting seat starts to rotate, at this time, the position of the first connecting pipe can be adjusted, ensure that the exhaust port of plankton sampler is quickly connected, simplify operation process and improve work efficiency, when needing to measure multiple plankton samplers in turn, flange can be rotated movable pipe and connect with the exhaust hole of another plankton sampler, close the valve of fixed pipe and open the valve of movable pipe, reduce the time and labor cost of repeated measurement, facilitate user to carry out continuous flow measurement in different environments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall axonometric schematic diagram of the utility model;

[0017] Figure 2 It is the overall cross-sectional schematic diagram of the utility model;

[0018] Figure 3 It is the axonometric schematic diagram of electronic flow meter, placing plate, mounting block and telescopic pipe of the utility model;

[0019] Figure 4 It is the axonometric schematic diagram of connecting mechanism of the utility model;

[0020] Figure 5 The shaft measurement schematic view of the installation block, the motor, the telescopic pipe and the movable pipe.

[0021] Legend:

[0022] 1, electronic flowmeter; 2, placement plate; 3, connecting mechanism; 301, installation block; 302, rotating column; 303, motor; 304, belt pulley; 305, connecting belt; 306, connecting seat; 307, fixed pipe; 308, No. 1 flange; 309, telescopic pipe; 310, No. 1 connecting pipe; 311, bearing; 312, movable pipe; 313, valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] With reference to Figure 1 , Figure 2 , Figure 3 An embodiment provided by the utility model:

[0025] A flow detection device of a plankton sampler, comprising an electronic flowmeter 1 and a connecting mechanism 3, and the electronic flowmeter 1 is fixedly provided with a placement plate 2 on one side of the front end.

[0026] Specifically, the connecting mechanism 3 of the utility model can connect the electronic flowmeter 1 and the plankton sampler together, thereby ensuring the accuracy of flow detection.

[0027] With reference to Figure 4 , Figure 5The connecting mechanism 3 comprises a mounting block 301 and a fixed pipe 307. A rotating column 302 is rotatably arranged at the middle of the upper end of the mounting block 301. A motor 303 is fixedly arranged at one side of the upper end of the mounting block 301. A belt pulley 304 is fixedly arranged at the output end of the motor 303 and the outer side of the rotating column 302. A connecting belt 305 is connected between the two belt pulleys 304. A No. 1 flange 308 is fixedly arranged at the outer side of the rear end of the fixed pipe 307. An extension pipe 309 is fixedly arranged at the front end of the fixed pipe 307. A No. 1 connecting pipe 310 is fixedly arranged at the front end of the extension pipe 309. A connecting seat 306 is fixedly arranged at the lower end of the No. 1 connecting pipe 310. A bearing 311 is rotatably arranged at the position close to the extension pipe 309 of the outer side of the fixed pipe 307. An active pipe 312 is fixedly arranged at the inner end of the bearing 311. The mounting block 301 is located at one side of the electronic flowmeter 1. The fixed pipe 307 is placed in the hole at one side of the electronic flowmeter 1. The No. 1 flange 308 is fixedly connected with one side of the electronic flowmeter 1. The upper end of the rotating column 302 is fixedly connected with the lower end of the connecting seat 306. The active pipe 312 is movably arranged above the mounting block 301. The active pipe 312 is placed at the upper end of the placing plate 2. The connecting seat 306 is rotatably arranged above the mounting block 301. The upper end of the fixed pipe 307 and the upper end of the active pipe 312 are fixedly provided with a valve 313. The outer side of the No. 1 connecting pipe 310 and the outer side of the active pipe 312 are fixedly provided with a connecting flange.

[0028] Specifically, the electronic flowmeter 1 is a kind of prior art, which calculates the flow by measuring the temperature change when the gas flows through the thermal element. The heating element maintains a constant temperature. When the gas flows, it takes away the heat, causing the heating element temperature to decrease. The temperature difference is proportional to the mass flow rate of the gas. The flow value is converted by the circuit. The calculation formula is flow = calibration coefficient * temperature difference. When it is necessary to connect the fixed pipe 307 with the electronic flowmeter 1, first, the position without the No. 1 flange 308 on the outer side of the fixed pipe 307 is placed into the hole of the electronic flowmeter 1. Then, the No. 1 flange 308 is screwed into the bolt, ensuring good sealing between the electronic flowmeter 1 and the fixed pipe 307, avoiding the gas leakage phenomenon, thereby enhancing the accuracy of measurement. After starting the motor 303, the connecting seat 306 starts to rotate. At this time, the position of the No. 1 connecting pipe 310 can be adjusted to ensure quick connection with the exhaust port of the planktonic bacteria sampler, simplifying the operation process and improving the work efficiency. When it is necessary to measure multiple planktonic bacteria samplers in sequence, the flange can be connected with the exhaust hole of another planktonic bacteria sampler by rotating the active pipe 312. The valve 313 of the fixed pipe 307 is closed and the valve 313 of the active pipe 312 is opened, reducing the time and labor cost of repeated measurement, and facilitating the user to continuously measure the flow in different environments.

[0029] Working principle: electronic flowmeter 1 is a kind of prior art, by measuring the temperature change when gas flows through thermal element to calculate flow, heating element keeps constant temperature, gas flows away heat, resulting in heating element temperature reduction, temperature difference is proportional to gas mass flow, by circuit conversion to flow value, calculation formula is flow=calibration coefficient*temperature difference, when it is necessary to connect fixed pipe 307 with electronic flowmeter 1, first, the position of fixed pipe 307 outside without No. Flange 308 is placed into the hole of electronic flowmeter 1, then No. Flange 308 is screwed into bolt, ensure good sealing between electronic flowmeter 1 and fixed pipe 307, after starting motor 303, connecting seat 306 starts to rotate, at this time, the position of No. Connection pipe 310 can be adjusted, ensure quick connection with the exhaust port of planktonic bacteria sampler, when it is necessary to measure multiple planktonic bacteria samplers in turn, flange can be connected with the exhaust hole of another planktonic bacteria sampler by rotating movable pipe 312, close valve 313 of fixed pipe 307 and open valve 313 of movable pipe 312, multiple planktonic bacteria samplers can be measured.

[0030] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can be modified to the technical scheme recorded in the foregoing embodiments, or equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. Within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A flow rate calibration device for a planar bacteria sampler, comprising an electronic flow meter (1) and a connecting mechanism (3), characterized in that: The electronic flow meter (1) has a placement plate (2) fixedly installed on one side of its front end. The connecting mechanism (3) includes a mounting block (301) and a fixing pipe (307). A rotating column (302) is rotatably installed at the middle position of the upper end of the mounting block (301). A motor (303) is fixedly installed on one side of the upper end of the mounting block (301). Pulleys (304) are fixedly sleeved on the output end of the motor (303) and the upper side of the rotating column (302). A connecting belt (305) is connected between the two pulleys (304). A flange (308) is fixedly sleeved on the outer side of the fixed pipe (307) near the rear end. A telescopic pipe (309) is fixedly installed at the front end of the fixed pipe (307). A connecting pipe (310) is fixedly installed at the front end of the telescopic pipe (309). A connecting seat (306) is fixedly installed at the lower end of the connecting pipe (310). A bearing (311) is rotatably installed on the outer side of the fixed pipe (307) near the telescopic pipe (309). A movable pipe (312) is fixedly installed at the inner end of the bearing (311).

2. The flow rate determination device for a planar bacteria sampler according to claim 1, characterized in that: The mounting block (301) is located on one side of the electronic flow meter (1), and the fixing tube (307) is placed in the hole on one side of the electronic flow meter (1).

3. The flow rate determination device for a planar bacteria sampler according to claim 1, characterized in that: The first flange (308) is fixedly connected to one side of the electronic flow meter (1), and the upper end of the rotating column (302) is fixedly connected to the lower end of the connecting seat (306).

4. The flow rate determination device for a planar bacteria sampler according to claim 1, characterized in that: The movable tube (312) is movably disposed above the mounting block (301), and the movable tube (312) is placed on the upper end of the placement plate (2).

5. The flow rate determination device for a planar bacteria sampler according to claim 1, characterized in that: The connecting seat (306) is rotatably mounted above the mounting block (301), and valves (313) are fixedly mounted on the upper ends of both the fixed pipe (307) and the movable pipe (312).

6. The flow rate determination device for a planar bacteria sampler according to claim 1, characterized in that: Both the first connecting pipe (310) and the movable pipe (312) are fixedly fitted with connecting flanges on their outer sides.

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