Pipeline structure of intermittent measurement type flowmeter

Abstract

The utility model discloses a pipeline structure of an intermittent measurement type flowmeter, which comprises an electromagnetic valve, a joint and a light sensor, the light sensor is arranged between the electromagnetic valve and the joint, and the light sensor is arranged on the side surface of a glass tube; the electromagnetic valve comprises a valve body, a first through hole, a second through hole and a third through hole are formed in the valve body, and the first through hole, the second through hole and the third through hole are communicated with one another in the valve body; the electromagnetic valve and the connector are connected through the glass tube, the optical sensor is arranged between the electromagnetic valve and the connector and located on one side of the glass tube, the electromagnetic valve is provided with a first through hole, a second through hole and a third through hole, a first communicating pipe is arranged between the first through hole and the third through hole, and a second communicating pipe is arranged between the first communicating pipe and the second through hole. The first communicating pipe and the second communicating pipe form a three-way loop structure in the electromagnetic valve, so that the length of a pipeline can be shortened, the number of connectors is reduced, and measurement is more stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of flowmeter, concretely relates to a pipeline structure of intermittent measurement type flowmeter. BACKGROUND

[0002] The HPLC flowmeter is used for measuring the precision of the high performance liquid chromatography pumping system, and the HPLC system used in the laboratory needs accurate and reproducible analyte column retention time, and the accurate retention time depends on the accurate pump flow rate. The HPLC pump calibration is one of the steps of HPLC identification and verification; the electromagnetic valve in the existing flowmeter usually adopts a conventional two-position two-way valve, and the flowmeter inlet needs to be connected with a three-way, so that the whole flowmeter is longer in size, there are too many joints, air bubbles are easy to be generated, and the stability of measurement is affected; after the three-way is cancelled, the inlet is moved to the electromagnetic valve, the pipeline length can be shortened, the number of connecting joints can be reduced, and the measurement is more stable. CONTENT

[0003] The utility model discloses a pipeline structure of intermittent measurement type flowmeter, connect electromagnetic valve and joint through glass tube, light sensor is located between electromagnetic valve and joint and is located glass tube one side, be provided with first through -hole, second through -hole and third through -hole on electromagnetic valve, be provided with first communication pipe between first through -hole and third through -hole, be provided with second communication pipe between first communication pipe and second through -hole, first communication pipe and second communication pipe form three -way loop structure in electromagnetic valve, thereby can shorten pipeline length, reduce the number of connecting joints, make measurement more stable.

[0004] The utility model discloses a pipeline structure of intermittent measurement type flowmeter, connect electromagnetic valve and joint through glass tube, light sensor is located between electromagnetic valve and joint and is located glass tube one side, be provided with first through -hole, second through -hole and third through -hole on electromagnetic valve, be provided with first communication pipe between first through -hole and third through -hole, be provided with second communication pipe between first communication pipe and second through -hole, first communication pipe and second communication pipe form three -way loop structure in electromagnetic valve, thereby can shorten pipeline length, reduce the number of connecting joints, make measurement more stable.

[0005] A pipeline structure of intermittent measurement type flowmeter, comprising an electromagnetic valve, a joint and a light sensor, the light sensor is arranged between the electromagnetic valve and the joint, and the light sensor is arranged on the side of the glass tube;The electromagnetic valve includes a valve body, a first through-hole, a second through-hole and a third through-hole are arranged on the valve body, and the first through-hole, the second through-hole and the third through-hole are communicated with each other in the valve body;The third through-hole is connected with the glass tube, a cleaning pipe is arranged above the joint, a drain pipe is connected with the first through-hole, and a water inlet pipe is connected with the second through-hole.

[0006] Further, the first through-hole and the third through-hole are oppositely arranged, the second through-hole is arranged on the side of the valve body, and the included angle between the second through-hole and the first through-hole or the third through-hole is 90°.

[0007] Further, a first communication pipe is arranged between the first through-hole and the third through-hole.

[0008] Further, a second communication pipe is arranged between the second through-hole and the first communication pipe. Further, a second communication pipe is arranged between the second through-hole and the first communication pipe.

[0009] Further, the electromagnetic valve comprises a valve cover which is screwed with the valve body; the valve cover is provided with a clearance hole which is arranged at the edge of the valve cover.

[0010] Further, the light sensor comprises a first sensing part and a second sensing part which are arranged at intervals, the first sensing part is arranged close to the electromagnetic valve, and the second sensing part is arranged close to the joint.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] In the utility model, the electromagnetic valve and the joint are connected through the glass tube, the light sensor is arranged between the electromagnetic valve and the joint and at one side of the glass tube, the first through hole, the second through hole and the third through hole are arranged on the electromagnetic valve, the first communicating pipe is arranged between the first through hole and the third through hole, the second communicating pipe is arranged between the first communicating pipe and the second through hole, and the first communicating pipe and the second communicating pipe form the three-way loop structure in the electromagnetic valve, so that the pipeline length can be shortened, the number of connecting joints can be reduced, and the measurement is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0014] Figure 1 It is the structure schematic view of the pipeline structure of the intermittent measurement type flowmeter of the utility model.

[0015] Figure 2 It is the internal communication structure schematic view of the electromagnetic valve in the pipeline structure of the intermittent measurement type flowmeter of the utility model.

[0016] Figure 3 It is the electromagnetic valve structure schematic view in the pipeline structure of the intermittent measurement type flowmeter of the utility model.

[0017] Wherein: 1-electromagnetic valve, 11-valve body, 12-valve cover, 2-drain pipe, 3-water inlet pipe, 4-glass tube, 5-light sensor, 51-first sensing part, 52-second sensing part, 6-joint, 7-cleaning pipe, 8-first communicating pipe, 9-second communicating pipe. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] Example 1:

[0020] A pipeline structure for an intermittent flow meter, such as Figure 1 As shown, the system includes a solenoid valve 1, a connector 6, and a light sensor 5. The light sensor 5 is positioned between the solenoid valve 1 and the connector 6, and is located on the side of the glass tube 4. Liquid enters through the solenoid valve 1, flows through the glass tube 4, and then flows out in the reverse direction. The light sensor 5 measures the liquid flow rate. The solenoid valve 1 includes a valve body 11, which is cylindrical. The valve body 11 has a first through hole, a second through hole, and a third through hole, which are interconnected within the valve body 11. The third through hole connects to the glass tube 4. A cleaning pipe 7 is located above the connector 6 for rinsing the glass tube 4. The first through hole connects to a drain pipe 2, and the second through hole connects to a water inlet pipe 3. The first and third through holes are opposite to each other. The second through hole is located on the side of the valve body 11. The angle between the second through hole and the first or third through hole is 90°. Liquid enters through the second through hole, flows through the glass tube 4 and reaches the connector 6. The water inlet of the solenoid valve 1 is closed, and the water falls back due to gravity and is discharged from the drain pipe 2 below the first through hole. The optical sensor 5 includes a first sensing part 51 and a second sensing part 52. The first sensing part 51 and the second sensing part 52 are spaced apart. The first sensing part 51 is located near the solenoid valve 1, and the second sensing part 52 is located near the connector 6. The liquid first passes through the first sensing part 51, then through the second sensing part 52, and then flows downward back to be discharged from the drain pipe 2. The two sensing parts of the optical sensor 5 jointly calculate the flow rate in the glass tube 4.

[0021] Example 2:

[0022] This embodiment, based on the above embodiment, further defines the solenoid valve 1, such as... Figure 2 and Figure 3As shown, the first through hole and the third through hole are provided with a first communication pipe 8; the second through hole and the first communication pipe 8 are provided with a second communication pipe 9, when the electromagnetic valve 1 is powered off, the first through hole is closed, the second through hole and the third through hole are opened, the liquid flows from the water inlet pipe 3 into the second communication pipe 9 and then flows into the glass tube 4 through the first communication pipe 8, when the electromagnetic valve 1 is powered on, the second through hole is closed, the first through hole and the third through hole are opened, the liquid flows back from the glass tube 4 through the first communication pipe 8 and then flows out from the drain pipe 2; the electromagnetic valve 1 comprises a valve cover 12, the valve cover 12 is threadedly connected with the valve body 11; the valve cover 12 is provided with a clearance hole, the clearance hole is arranged at the edge of the valve cover 12, and the clearance hole is used for rotating the valve cover 12.

[0023] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, or it is the orientation or position relation that the utility model product uses usually, only is for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, constructs and operates with a particular orientation, therefore can not be understood as the limitation of the utility model.

[0024] In addition, the description of the utility model appears "horizontal", "vertical" and so on, and does not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the utility model, it also needs to explain that, unless there is explicit provision and limitation, if the terms "arrangement", "installation", "connection", "connection" appear, should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected;Can be mechanically connected, or electrically connected;Can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change made according to the technical essence of the utility model to the above embodiment falls within the protection scope of the utility model.

Claims

1. A pipe structure of an intermittent measurement type flow meter, characterized by comprising: The application relates to a glass tube cleaning device, which comprises an electromagnetic valve, a joint and a light sensor, the light sensor is arranged between the electromagnetic valve and the joint, and the light sensor is arranged on the side of the glass tube; the electromagnetic valve comprises a valve body, a first through hole, a second through hole and a third through hole are arranged on the valve body, the first through hole, the second through hole and the third through hole are communicated with each other in the valve body; the third through hole is connected with the glass tube, a cleaning pipe is arranged above the joint, a drain pipe is connected with the first through hole, and a water inlet pipe is connected with the second through hole.

2. The pipe structure of the intermittent measurement type flow meter according to claim 1, wherein The first through hole is oppositely arranged with the third through hole, the second through hole is arranged on the side of the valve body, and the included angle between the second through hole and the first through hole or the third through hole is 90 DEG.

3. The pipe structure of the intermittent measurement type flow meter according to claim 2, wherein A first communicating pipe is arranged between the first through hole and the third through hole.

4. The pipe structure of the intermittent measurement type flow meter according to claim 3, wherein A second communicating pipe is arranged between the second through hole and the first communicating pipe.

5. The pipe structure of the intermittent measurement type flowmeter according to claim 1, wherein The electromagnetic valve comprises a valve cover, the valve cover is threadedly connected with the valve body, a clearance hole is arranged on the valve cover, and the clearance hole is arranged on the edge of the valve cover.

6. The pipe structure of the intermittent measurement type flow meter according to claim 1, wherein The light sensor comprises a first sensing part and a second sensing part, the first sensing part and the second sensing part are arranged at intervals, the first sensing part is arranged close to the electromagnetic valve, and the second sensing part is arranged close to the joint.

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