Intermittent measurement type flowmeter

Abstract

The utility model discloses an intermittent measurement type flowmeter which comprises a shell, an electromagnetic valve, a connector and an optical sensor, the electromagnetic valve, the connector and the optical sensor are all arranged in the shell, the optical sensor is arranged between the shell and the electromagnetic valve, the electromagnetic valve is connected with the connector through a glass tube, the optical sensor is arranged on the side face of the glass tube, and the connector is connected with the optical sensor. A hydrophobic layer is arranged on the inner side wall of the glass tube; according to the utility model, the glass tube is fixed in the shell through the electromagnetic valve and the connector, the optical sensor is arranged on the side surface of the glass tube to measure the flow, and the hydrophobic layer is arranged in the glass tube, so that the phenomenon that liquid is hung on the wall when the flow is measured is prevented, the measurement precision is ensured, and the measurement error is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of flow meter technology, specifically relating to an intermittent measurement flow meter. Background Technology

[0002] HPLC flow meters are used to measure the accuracy of high-performance liquid chromatography pumping systems. HPLC systems used in laboratories require accurate and reproducible column retention times for the analyte. Accurate retention times depend on accurate pump flow rates. Traditional flow meters typically consist of a sensor, glass tube, and T-connector. However, the cleanliness and hydrophobicity of the glass tube in existing flow meters are often insufficient, frequently leading to liquid adhering to the flow wall, which can affect measurement accuracy and cause measurement errors. Utility Model Content

[0003] The purpose of this utility model is to provide an intermittent flow meter, in which a glass tube is fixed in the housing by a solenoid valve and a connector, a photoelectric sensor is set on the side of the glass tube to measure the flow rate, and a hydrophobic layer is set inside the glass tube to prevent liquid from adhering to the wall when measuring the flow rate.

[0004] This utility model is achieved through the following technical solution:

[0005] An intermittent flow meter includes a housing, a solenoid valve, a connector, and a photoelectric sensor. The solenoid valve, connector, and photoelectric sensor are all disposed inside the housing. The photoelectric sensor is disposed between the housing and the solenoid valve. The solenoid valve and the connector are connected by a glass tube. The photoelectric sensor is disposed on the side of the glass tube. A hydrophobic layer is disposed on the inner wall of the glass tube.

[0006] Furthermore, a PLC board is provided inside the housing, and the PLC board is fixed inside the housing by support bolts. The PLC board is spaced apart from the solenoid valve, the optical sensor and the connector.

[0007] Furthermore, a first through hole is provided on the housing at the joint position, and a first pipeline is connected to the joint, the first pipeline cooperating with the first through hole.

[0008] Furthermore, a fixing component is provided on the housing at the location of the first pipeline. The fixing component includes a first fixing block and a second fixing block. The second fixing block is located above the first fixing block, and the first pipeline is located between the first fixing block and the second fixing block. The first fixing block and the second fixing block are connected by bolts to fix the first pipeline.

[0009] Furthermore, both the first fixing block and the second fixing block are provided with clearance grooves at the location of the first pipeline, and the clearance grooves are used to make way for the first pipeline.

[0010] Furthermore, a second through hole is provided on the housing at the position of the solenoid valve, and a second pipeline is provided at the end of the solenoid valve, the second pipeline cooperating with the second through hole.

[0011] Furthermore, mounting components are provided on both the upper and lower surfaces of the housing.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] 1) In this utility model, the glass tube is fixed in the housing by means of a solenoid valve and a connector. A photosensitive sensor is set on the side of the glass tube to measure the flow rate. A hydrophobic layer is set inside the glass tube to prevent liquid from sticking to the wall when measuring the flow rate, thereby ensuring the accuracy of the measurement and reducing the measurement error.

[0014] 2) In this utility model, a first pipeline and a fixing component are provided behind the connector. The fixing component can fix the first pipeline and the connector in the housing, ensuring the stability of the connector and thus improving the stability of the glass tube, avoiding shaking between the glass tube and the optical sensor, which would affect the measurement accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the housing structure of the intermittent flow meter of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the intermittent flow meter of this utility model.

[0018] Wherein: 1-housing, 11-mounting component, 2-solenoid valve, 3-connector, 4-glass tube, 5-light sensor, 6-PLC board, 7-display screen, 8-fixing component, 81-first fixing block, 82-second fixing block, 9-first pipeline, 10-second pipeline. Detailed Implementation

[0019] 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.

[0020] Example 1:

[0021] An intermittent flow meter, such as Figure 1 and Figure 2 As shown, the system includes a housing 1, a solenoid valve 2, a connector 3, and a light sensor 5. The solenoid valve 2, connector 3, and light sensor 5 are all housed within the housing 1. The light sensor 5 is positioned between the housing 1 and the solenoid valve 2. The solenoid valve 2 and connector 3 are connected via a glass tube 4. The light sensor 5 is located on the side of the glass tube 4. A hydrophobic layer is provided on the inner wall of the glass tube 4 to prevent liquid from adhering to the wall and affecting the data received by the light sensor 5. A PLC board 6 is housed within the housing 1, and a display screen 7 is mounted on the PLC board 6. The PLC board 6 is fixed to the housing 1 by support bolts, and the display screen 7 displays flow data on the surface of the housing 1. The PLC board 6 is spaced apart from the solenoid valve 2, light sensor 5, and connector 3, and is surrounded by... The housing 1 is equipped with four support rods that support the PLC board 6 above the glass tube 4, maintaining a certain distance between it and the solenoid valve 2, the photosensitive sensor 5, and the connector 3. A first through hole is located at the connector 3 on the housing 1, and a first pipe 9 is connected to the connector 3. The first pipe 9 mates with the first through hole and extends out of the first through hole to connect to an external water tank or equipment. A second through hole is located at the solenoid valve 2 on the housing 1, and a second pipe 10 is located at the end of the solenoid valve 2. The second pipe 10 mates with the second through hole and extends out from the bottom of the housing 1 to connect to external equipment. Mounting members 11 are provided on both the upper and lower surfaces of the housing 1, and mounting holes are provided on the mounting members 11 to fix the flow meter.

[0022] Example 2:

[0023] This embodiment, based on the above embodiment, further adds a fixing component 8. The fixing component 8 is installed on the housing 1 at the location of the first pipe 9. The fixing component 8 includes a first fixing block 81 and a second fixing block 82. The second fixing block 82 is positioned above the first fixing block 81, and the first pipe 9 is positioned between the first fixing block 81 and the second fixing block 82. The first fixing block 81 and the second fixing block 82 are connected by bolts to fix the first pipe 9. Threaded holes are provided on both the left and right sides of the first fixing block 81 and the second fixing block 82, allowing the pipe to be fixed by two bolts. The two fixing blocks can be connected, and bolts can pass through the lower first fixing block 81 to connect to the housing 1. Both the first fixing block 81 and the second fixing block 82 have clearance grooves at the location of the first pipe 9. These clearance grooves are semi-circular curved surfaces and are used to allow space for the first pipe 9. The first pipe 9 is positioned within the clearance grooves of the first fixing block 81 and the second fixing block 82. The first pipe 9 is fixed by the first fixing block 81 and the second fixing block 82, thereby ensuring the stability of the connector 3 and preventing shaking between the glass tube 4 and the light sensor 5, which could affect the flow rate statistics. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated here.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply 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 tilted.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An intermittent flow meter, characterized in that, The device includes a housing, a solenoid valve, a connector, and a light sensor. The solenoid valve, connector, and light sensor are all housed within the housing. The light sensor is located between the housing and the solenoid valve. The solenoid valve and the connector are connected via a glass tube. The light sensor is located on the side of the glass tube. A hydrophobic layer is provided on the inner wall of the glass tube.

2. The intermittent flow meter as described in claim 1, characterized in that, A PLC board is installed inside the housing. The PLC board is fixed inside the housing by support bolts. The PLC board is spaced apart from the solenoid valve, the optical sensor and the connector.

3. The intermittent flow meter as described in claim 1, characterized in that, The housing has a first through hole at the joint position, and a first pipe is connected to the joint, the first pipe cooperating with the first through hole.

4. The intermittent flow meter as described in claim 3, characterized in that, A fixing component is provided on the housing at the location of the first pipeline. The fixing component includes a first fixing block and a second fixing block. The second fixing block is located above the first fixing block. The first pipeline is located between the first fixing block and the second fixing block. The first fixing block and the second fixing block are connected by bolts to fix the first pipeline.

5. The intermittent flow meter as described in claim 4, characterized in that, Both the first fixing block and the second fixing block are provided with clearance grooves at the location of the first pipeline, and the clearance grooves are used to make way for the first pipeline.

6. The intermittent flow meter as described in claim 1, characterized in that, A second through hole is provided on the housing at the position of the solenoid valve, and a second pipeline is provided at the end of the solenoid valve, the second pipeline cooperating with the second through hole.

7. The intermittent flow meter as described in claim 1, characterized in that, Mounting components are provided on both the upper and lower surfaces of the housing.

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