Fixing structure of intermittent measurement type flowmeter optical sensor

Abstract

The utility model discloses a fixing structure of an intermittent measurement type flowmeter optical sensor, which comprises a shell, an optical sensor, a glass tube and a fixing component, the optical sensor is arranged in the fixing component, the fixing component is arranged in the shell, the glass tube is arranged on one side of the optical sensor, and the glass tube is arranged on the other side of the optical sensor. Two ends of the glass tube are respectively connected with the electromagnetic valve and the joint; the fixing assembly is connected with the shell through a first screw group; according to the utility model, the first fixing member and the second fixing member are arranged in the housing, the optical sensor is stably fixed on one side of the glass tube through the plugging cooperation of the first fixing member and the second fixing member and the screw connection, and at the same time, the first fixing member is provided with the heat dissipation groove, so that the optical sensor is not overheated in the operation process; the first fixing piece and the second fixing piece are provided with the receding openings, the sensing part of the optical sensor can penetrate through the receding openings to be matched with the glass tube, the overall structure is simple, installation is convenient, and the fixing effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flowmeter technical field, concretely relates to a fixed knot of intermittent measurement formula flowmeter light sensor. BACKGROUND

[0002] Intermittent measurement formula flowmeter is used for measuring the precision of high performance liquid chromatography pumping system, and the HPLC system used in laboratory needs accurate and reproducible analyte column retention time;Accurate retention time depends on accurate pump flow rate, and HPLC pump calibration is one of the steps of HPLC identification and verification;Light sensor is arranged in intermittent measurement formula flowmeter, and the vibration of electromagnetic valve of intermittent measurement formula flowmeter affects the fastening of glass tube and light sensor, if displacement occurs between light sensor and glass tube, then it directly affects the measurement accuracy and repeatability of flowmeter, therefore, light sensor must be completely fastened on the bottom plate, and be not affected by the vibration of electromagnetic valve. UTILITY MODEL CONTENTS

[0003] The utility model discloses a fixed knot of intermittent measurement formula flowmeter light sensor is provided, sets up first fixed part and second fixed part in the casing, and through the insertion cooperation of first fixed part and second fixed part and the screw connection of the light sensor stably fixed in the glass tube one side, simultaneously, first fixed part is provided with the heat dissipation groove, will not lead to the overheating of light sensor operation process, simple structure, convenient installation, and the fixed effect is good.

[0004] The utility model discloses the following technical scheme realizes:

[0005] A fixed knot of intermittent measurement formula flowmeter light sensor, including casing, light sensor, glass tube and fixed assembly, the light sensor is arranged in fixed assembly, the fixed assembly is arranged in casing, the glass tube is arranged in light sensor one side, and the glass tube both ends are connected with electromagnetic valve and joint respectively;The fixed assembly and casing are connected through first screw group.

[0006] Further, the fixed assembly includes first fixed part and second fixed part, the second fixed part is arranged above the first fixed part, the light sensor is arranged between the first fixed part and the second fixed part, the bottom of the second fixed part is connected with the bottom of the first fixed part by insertion cooperation, and the top of the first fixed part is connected with the top of the second fixed part by second screw group.

[0007] Further, the bottom of the first fixed part is provided with a limiting groove, and the bottom of the second fixed part is connected with the limiting groove by insertion cooperation.

[0008] Further, the side surface of the limiting groove is provided with a limiting surface, the limiting surface is an inclined surface, the bottom of the second fixed part is provided with an abutting surface, and the abutting surface is matched with the limiting surface.

[0009] Further, the first fixing member is provided with a first clearance, the second fixing member is provided with a second clearance, the light sensor is provided with a sensing part, the first clearance and the second clearance are matched to clear the sensing part, and the glass tube passes through the sensing part.

[0010] Further, the first fixing member is provided with a first clearance, the second fixing member is provided with a second clearance, the light sensor is provided with a sensing part, the first clearance and the second clearance are matched to clear the sensing part, and the glass tube passes through the sensing part.

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

[0012] In the utility model, the first fixing member and the second fixing member are arranged in the shell, the light sensor is stably fixed on one side of the glass tube through the plug-in cooperation and screw connection of the first fixing member and the second fixing member, meanwhile, the first fixing member is provided with a heat dissipation groove, so that the light sensor is not overheated during operation, the first fixing member and the second fixing member are provided with the clearance, the sensing part of the light sensor can pass through the clearance and cooperate with the glass tube, the overall structure is simple, convenient to install and good in fixing effect. BRIEF DESCRIPTION OF DRAWINGS

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

[0014] Figure 1 It is a structure diagram of the fixing structure of the light sensor of the intermittent measurement type flowmeter.

[0015] Figure 2 It is a structure diagram of the fixing structure of the light sensor of the intermittent measurement type flowmeter. Figure 1 It is a sectional view along A-A direction.

[0016] Figure 3 It is a structure diagram of the first fixing member in the fixing structure of the light sensor of the intermittent measurement type flowmeter.

[0017] Figure 4 It is a structure diagram of the second fixing member in the fixing structure of the light sensor of the intermittent measurement type flowmeter.

[0018] Wherein: 1 - shell, 2 - electromagnetic valve, 3 - joint, 4 - glass tube, 5 - first fixing member, 51 - limit groove, 52 - limit surface, 53 - first clearance, 54 - heat dissipation groove, 6 - second fixing member, 61 - abutting surface, 62 - second clearance, 7 - light sensor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.

[0020] Embodiment 1

[0021] A fixing structure of intermittent measurement type flowmeter optical sensor, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , comprising a shell 1, an optical sensor 7, a glass tube 4 and a fixing assembly, the optical sensor 7 is arranged in the fixing assembly, the fixing assembly is arranged in the shell 1, the glass tube 4 is arranged on one side of the optical sensor 7, the glass tube 4 is connected with an electromagnetic valve 2 and a joint 3 at both ends respectively, and the other end of the electromagnetic valve 2 and the joint 3 is connected with a pipeline for water inlet and outlet; the fixing assembly is connected with the shell 1 through a first screw group, the first screw group comprises four screws; the fixing assembly comprises a first fixing piece 5 and a second fixing piece 6, the second fixing piece 6 is arranged above the first fixing piece 5, the four screws are screwed with the first fixing piece 5 through the bottom of the shell 1, the optical sensor 7 is arranged between the first fixing piece 5 and the second fixing piece 6, the bottom of the second fixing piece 6 is connected with the bottom of the first fixing piece 5 in plug-in fit, the top of the first fixing piece 5 is connected with the top of the second fixing piece 6 through a second screw group, the second screw group comprises two screws, the two screws are screwed with the first fixing piece 5 after passing through the second fixing piece 6, and the optical sensor 7 is fixed between the first fixing piece 5 and the second fixing piece 6.

[0022] Embodiment 2

[0023] The first fixing piece 5 and the second fixing piece 6 are further limited in the embodiment based on the above-mentioned embodiments, as shown in Figure 2 、 Figure 3 and Figure 4As shown, the first fixing member 5 and the second fixing member 6 are both L-shaped structures, the bottom of the first fixing member 5 is provided with a limiting groove 51, the bottom of the second fixing member 6 is connected with the limiting groove 51 in plug-in cooperation, at the same time, the top of the first fixing member 5 and the top of the second fixing member 6 are connected through two screws, so that the light sensor 7 is kept stable between the first fixing member 5 and the second fixing member 6; the side surface of the limiting groove 51 is provided with a limiting surface 52, the limiting surface 52 is an inclined surface, the bottom of the second fixing member 6 is provided with an abutting surface 61, the abutting surface 61 is also an inclined surface structure, the abutting surface 61 is in abutting cooperation with the limiting surface 52, during the screw fixing process of the second fixing member 6, the abutting surface 61 will slide down along the limiting surface 52, and after sliding to a certain depth, the light sensor 7 is clamped, at the same time, the screw is fastened in place, and the light sensor 7 will not be damaged or extruded; the bottom of the first fixing member 5 is provided with a first accommodation opening 53, the bottom of the second fixing member 6 is provided with a second accommodation opening 62, the light sensor 7 is provided with a sensing part, the sensing part is protrudingly arranged, the first accommodation opening 53 and the second accommodation opening 62 are cooperated for accommodating the sensing part, the sensing part is arranged to protrude from the first accommodation opening 53 and the second accommodation opening 62, and the glass tube 4 is arranged to pass through the sensing part; the first fixing member 5 is provided with a heat dissipation groove 54, the heat dissipation groove 54 is located on the opposite side of the first accommodation opening 53, and the heat dissipation groove 54 is used for heat dissipation of the light sensor 7. The other parts of the embodiment are the same as the above-mentioned embodiment, and will not be described here.

[0024] 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 is 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 therefore cannot be understood as the restriction to the utility model.

[0025] 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. Such as "horizontal" only refers to its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the utility model, still need to explain, unless another explicit provision and limitation, if appear term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.

[0027] 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 of the above embodiment according to the technical essence of the utility model falls within the protection scope of the utility model.

Claims

1. A fixed structure of an optical sensor of an intermittent measurement type flowmeter, characterized by comprising: The utility model relates to a light sensor fixing device, including shell, light sensor, glass tube and fixed component, light sensor sets up in fixed component, fixed component sets up in shell, glass tube sets up in light sensor one side, glass tube both ends are connected with electromagnetic valve and joint respectively, fixed component and shell are connected through first screw group.

2. The optical sensor fixing structure for an intermittent measurement type flow meter according to claim 1, wherein The fixed component includes first fixed part and second fixed part, the second fixed part is arranged above the first fixed part, the light sensor is arranged between the first fixed part and the second fixed part, the bottom of the second fixed part is connected with the bottom of the first fixed part by plug-in fit, and the top of the first fixed part is connected with the top of the second fixed part by the second screw group.

3. The optical sensor fixing structure for an intermittent measurement type flow meter according to claim 2, wherein The bottom of the first fixed part is provided with a limiting groove, and the bottom of the second fixed part is connected with the limiting groove by plug-in fit.

4. The optical sensor fixing structure for an intermittent measurement type flow meter according to claim 3, wherein The side of the limiting groove is provided with a limiting surface, the limiting surface is an inclined surface, the bottom of the second fixed part is provided with an abutting surface, and the abutting surface is matched with the limiting surface.

5. The optical sensor fixing structure for an intermittent measurement type flow meter according to claim 2, wherein The bottom of the first fixed part is provided with a first accommodation opening, the bottom of the second fixed part is provided with a second accommodation opening, the light sensor is provided with a sensing part, the first accommodation opening and the second accommodation opening are matched to accommodate the sensing part, and the glass tube passes through the sensing part.

6. The optical sensor fixing structure for an intermittent measurement type flow meter according to claim 5, wherein The first fixed part is provided with a heat dissipation groove, and the heat dissipation groove is used for heat dissipation of the light sensor.

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