Flow adjusting device of planktonic bacteria sampler

Abstract

The utility model discloses a planktonic bacteria sampler flow regulating device which comprises a base, a regulating tank and a buffer tank are respectively arranged at the top of the base close to two ends, one end of the regulating tank and one end of the buffer tank are respectively provided with a mounting joint, the other end of the regulating tank is connected with the other end of the buffer tank through a connecting pipe, and a rotor flow meter is arranged at the top of the connecting pipe. A control mechanism facilitating flow adjustment is arranged on the inner side of the adjusting tank, and one-way valves are installed at the positions, close to the two ends, of the buffer tank. Gas flow in the adjusting tank can be adjusted through the arranged control mechanism, and the gas flow can be monitored in real time through the arranged rotor flow meter; and the buffer tank and the one-way valve in the buffer tank play roles in stabilizing the gas flow and preventing the gas from flowing back, so that through the structure, the precise and stable control on the gas flow of the planktonic bacteria sampler is realized, and the accuracy and reliability of sampling data are ensured.

Description

Technical Field

[0001] This utility model relates to the field of microbial detection equipment technology, specifically to a flow regulation device for airborne bacteria samplers. Background Technology

[0002] Airborne microbial samplers are important devices for collecting airborne microorganisms and are widely used in pharmaceuticals, food processing, medical and health care, and biosafety laboratories. Flow rate is one of the key parameters of airborne microbial samplers, and its accuracy and stability directly affect the reliability of the sampling results.

[0003] However, existing flow regulation devices for airborne microbial samplers have many problems. The common manual adjustment method makes it difficult to accurately control the flow rate, which can easily lead to large deviations in the sampling flow rate and affect the accuracy of the sampling results. In addition, existing flow regulation devices lack flow stabilization functions. During the sampling process, the flow rate is easily affected by environmental factors or fluctuations in the operation of the equipment itself, resulting in unstable sampling data that cannot truly reflect the microbial situation in the sampling environment. Therefore, it is necessary to design a flow regulation device for airborne microbial samplers to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a flow rate adjustment device for a planar bacteria sampler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flow regulating device for an airborne bacteria sampler, comprising a base, wherein a regulating tank and a buffer tank are respectively installed on the top of the base near both ends, and each of the regulating tank and the buffer tank has an installation joint at one end, and the other ends of the regulating tank and the buffer tank are connected by a connecting pipe, wherein a rotor flow meter is installed on the top of the connecting pipe, and a control mechanism for easy flow regulation is provided on the inner side of the regulating tank, and a one-way valve is installed on each of the buffer tanks near both ends.

[0006] Preferably, the control mechanism includes a knob, an air inlet chamber is provided at the bottom inner side of the regulating tank, an air outlet chamber is provided above the air inlet chamber, a valve seat is installed between the air inlet chamber and the air outlet chamber, a valve shell is installed at the top of the regulating tank, a movable groove is provided at the bottom of the valve shell, two sets of limiting grooves are symmetrically provided on the inner wall of the movable groove, a threaded cylinder is slidably connected to the inner side of the movable groove, a protrusion is provided on the side of the threaded cylinder that is slidably connected to the two sets of limiting grooves, a conical valve core adapted to the valve seat is provided at the bottom of the threaded cylinder, a lead screw is threadedly connected to the threaded cylinder, the lead screw is rotatably connected to the valve shell, and one end of the lead screw extends to the outside of the valve shell and is connected to the knob.

[0007] Preferably, the valve core is made of rubber.

[0008] Preferably, the buffer tank body is cylindrical, with tapered ends.

[0009] Preferably, the outer ring of the mounting joint is provided with multiple sealing rubber rings.

[0010] Preferably, the bottom of the base has four sets of mounting holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through its control mechanism, can regulate the gas flow rate in the regulating tank. The rotor flow meter can monitor the gas flow rate in real time. The buffer tank and its internal one-way valve can stabilize the gas flow rate and prevent backflow. Thus, through the above structure, precise and stable control of the gas flow rate of the airborne bacteria sampler is achieved, ensuring the accuracy and reliability of the sampling data. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a bottom view of the present invention;

[0015] Figure 3 This is a side view and a top view of the present invention;

[0016] Figure 4 This is a side sectional view of the present invention;

[0017] Figure 5 for Figure 4 Enlarged view of part A in the image.

[0018] In the diagram: 1. Base, 2. Mounting hole, 3. Regulating tank, 4. Inlet chamber, 5. Outlet chamber, 6. Valve seat, 7. Valve body, 8. Movable groove, 9. Limiting groove, 10. Threaded cylinder, 11. Valve core, 12. Lead screw, 13. Knob, 14. Connecting pipe, 15. Rotor flow meter, 16. Buffer tank, 17. Check valve, 18. Mounting connector. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please refer to Figure 1-5 As shown, this utility model provides a flow rate regulating device for an airborne bacteria sampler, including a base 1. A regulating tank 3 and a buffer tank 16 are respectively installed on the top of the base 1 near both ends. One end of the regulating tank 3 and the buffer tank 16 is provided with a mounting connector 18. The other ends of the regulating tank 3 and the buffer tank 16 are connected by a connecting pipe 14. A rotor flow meter 15 is installed on the top of the connecting pipe 14. The inner side of the regulating tank 3 is provided with a control mechanism to facilitate flow rate regulation. One-way valves 17 are installed on both ends of the buffer tank 16.

[0022] Specifically, the gas flow rate in the regulating tank 3 can be adjusted through the set control mechanism, and the gas flow rate can be monitored in real time through the set rotor flow meter 15. The buffer tank 16 and its internal one-way valve 17 play the role of stabilizing the gas flow rate and preventing gas backflow. Thus, through the above structure, the gas flow rate of the airborne bacteria sampler is accurately and stably controlled, ensuring the accuracy and reliability of the sampling data.

[0023] The control mechanism includes a knob 13. An air inlet chamber 4 is located at the bottom inner side of the regulating tank 3, and an air outlet chamber 5 is located above the air inlet chamber 4. A valve seat 6 is installed between the air inlet chamber 4 and the air outlet chamber 5. A valve shell 7 is installed on the top of the regulating tank 3. A movable groove 8 is opened at the bottom of the valve shell 7. Two sets of limiting grooves 9 are symmetrically opened on the inner wall of the movable groove 8. A threaded cylinder 10 is slidably connected to the inner side of the movable groove 8. A protrusion is provided on the side of the threaded cylinder 10, which is slidably connected to the two sets of limiting grooves 9. A conical valve core 11 adapted to the valve seat 6 is provided at the bottom of the threaded cylinder 10. A lead screw 12 is threadedly connected to the threaded cylinder 10. The lead screw 12 is rotatably connected to the valve shell 7, and one end extends to the outside of the valve shell 7 and is connected to the knob 13. By rotating the knob 13, the lead screw 12 can be driven to rotate. Through the threaded engagement between the lead screw 12 and the threaded cylinder 10, and under the limiting action of the limiting grooves 9 and the protrusions, the threaded cylinder 10 can rotate. The screw cylinder 10 moves linearly within the movable groove 8, thereby moving the conical valve core 11 relative to the valve seat 6. When the screw cylinder 10 slides upward, it causes the connected conical valve core 11 to move upward, increasing the gap between the conical valve core 11 and the valve seat 6. This increases the flow area between the inlet chamber 4 and the outlet chamber 5. With the increased flow area, the resistance to gas flow from the inlet chamber 4 to the outlet chamber 5 decreases, and the gas flow rate increases accordingly. When the screw cylinder 10 slides downward, it causes the conical valve core 11 to move downward, decreasing the gap between the conical valve core 11 and the valve seat 6. This decreases the flow area between the inlet chamber 4 and the outlet chamber 5. With the decreased flow area, the resistance to gas flow from the inlet chamber 4 to the outlet chamber 5 increases, and the gas flow rate decreases accordingly. This allows for the regulation of the gas flow rate. Furthermore, through various settings, stepless control of the gas flow rate can be achieved. This system has the advantages of compact structure, high adjustment accuracy, and convenient operation.

[0024] Among them, the valve core 11 is made of rubber. With its good flexibility and sealing performance, it can better fit the valve seat 6, accurately adjust the flow area between the air inlet chamber 4 and the air outlet chamber 5, effectively reduce gas leakage, and improve the adjustment accuracy and stability of the flow regulating device.

[0025] Among them, the main body of the buffer tank 16 is cylindrical, and its two ends are designed to be tapered. This design not only increases the structural strength of the tank and reduces stress concentration, but also optimizes the internal gas flow, enhances the buffering effect, and more effectively stabilizes the gas flow.

[0026] The outer ring of the mounting connector 18 is equipped with multiple sealing rubber rings, which significantly enhances the sealing of the connection, effectively prevents gas leakage, and ensures the stability of the flow regulation device of the airborne bacteria sampler and the accuracy of the sampling data.

[0027] The base 1 has four sets of mounting holes 2 at its bottom, which facilitates the secure installation and fixing of the device on the work platform using bolts and other connecting parts, thereby enhancing the stability of the device during operation.

[0028] Working principle: First, the device is fixed to the working platform with bolts through the four sets of mounting holes 2 at the bottom of the base 1. The regulating tank 3 and the buffer tank 16 are connected to the sampling head and the airborne bacteria sampler respectively through the mounting connector 18. Then, the sampler is started. During the gas flow, the rotor flow meter 15 can monitor the flow rate in real time. When the flow rate needs to be adjusted, the knob 13 is rotated, which can drive the lead screw 12 to rotate. Through the threaded engagement and the limiting groove 9 and the protrusion, the threaded cylinder 10 can drive the rubber conical valve core 11 to move relative to the valve seat 6, changing the flow area between the air inlet chamber 4 and the air outlet chamber 5, thereby adjusting the gas flow rate. The adjusted gas flows to the sampler through the connecting pipe 14, the rotor flow meter 15, and the buffer tank 16. During the entire sampling process, the buffer tank 16 and the one-way valve 17 can continuously stabilize the gas flow rate and prevent backflow, thus completing the entire operation process.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flow rate regulating device for an airborne bacteria sampler, comprising a base (1), characterized in that: A regulating tank (3) and a buffer tank (16) are respectively installed on the top of the base (1) near both ends. One end of the regulating tank (3) and the buffer tank (16) is provided with a mounting joint (18). The other end of the regulating tank (3) and the buffer tank (16) are connected by a connecting pipe (14). A rotor flow meter (15) is installed on the top of the connecting pipe (14). The inner side of the regulating tank (3) is provided with a control mechanism for easy flow regulation. One-way valves (17) are installed on both ends of the buffer tank (16).

2. The flow rate regulating device for the airborne bacteria sampler according to claim 1, characterized in that: The control mechanism includes a knob (13), an air inlet chamber (4) is provided at the bottom inner side of the regulating tank (3), an air outlet chamber (5) is provided above the air inlet chamber (4), a valve seat (6) is installed between the air inlet chamber (4) and the air outlet chamber (5), a valve shell (7) is installed at the top of the regulating tank (3), a movable groove (8) is provided at the bottom of the valve shell (7), and two sets of limiting grooves (9) are symmetrically provided on the inner wall of the movable groove (8). 8) has a threaded cylinder (10) slidably connected to its inner side. The side of the threaded cylinder (10) is provided with a protrusion that is slidably connected to the two sets of limiting grooves (9). The bottom of the threaded cylinder (10) is provided with a conical valve core (11) that is adapted to the valve seat (6). The threaded cylinder (10) is threadedly connected to a lead screw (12). The lead screw (12) is rotatably connected to the valve body (7). One end of the lead screw extends to the outside of the valve body (7) and is connected to the knob (13).

3. The flow rate regulating device for the airborne bacteria sampler according to claim 2, characterized in that: The valve core (11) is made of rubber.

4. The flow rate regulating device for the airborne bacteria sampler according to claim 1, characterized in that: The buffer tank (16) is cylindrical in shape, with tapered ends.

5. The flow rate regulating device for the airborne bacteria sampler according to claim 4, characterized in that: The outer ring of the mounting joint (18) is provided with multiple sealing rubber rings.

6. The flow rate regulating device for the airborne bacteria sampler according to claim 1, characterized in that: The base (1) has four sets of mounting holes (2) at its bottom.

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