Flow cell

Abstract

The utility model discloses a flow cell which comprises a body, a cavity is arranged in the body, a lens communicated with the outside is arranged in the cavity, the shape of the lens is matched with that of the cavity, a crack is vertically arranged in the lens, an inlet and an outlet for liquid phase circulation are respectively arranged at the upper end and the lower end of the body, and the inlet and the outlet are communicated with the cavity. The body is provided with the light source sensor, and the slit and the lens are integrated, so that the assembly error is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of liquid detection equipment technology, specifically to a flow cell. Background Technology

[0002] Traditional flow cell consists of a cavity, two lenses, four sealing gaskets, and two clamping components. However, existing technology has certain objective drawbacks. Traditional mixing cells require the installation of PTFE sealing gaskets between the two lenses and the cavity. Due to the unevenness of the sealing gaskets themselves, there are multiple assembly errors between the lenses, sealing gaskets, and the cavity, resulting in poor width and parallelism of the slit formed by the two lenses, thus affecting the detection accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a flow pool that integrates the slit and the lens as a whole, greatly reducing assembly errors.

[0004] According to the present invention, a flow pool includes a body, a cavity is provided inside the body, a lens communicating with the outside is installed in the cavity, the shape of the lens is adapted to the cavity, a vertical slit is provided inside the lens, an inlet and an outlet for liquid phase flow are respectively provided at the upper and lower ends of the body, and a light source sensor is installed on the body.

[0005] In practical use, the liquid phase enters through the inlet and flows through the lens. Light emitted from the light source enters from one side of the flow cell, i.e., one side of the lens, and irradiates the sample. When the light passes through the sample solution, based on Beer-Lambert's law, the sample absorbs a portion of the light, and the remaining light exits from the other side of the flow cell, i.e., the other side of the lens. After being absorbed by the light source sensor, it is converted into an electrical signal to obtain information such as the chemical composition and concentration of the liquid phase. The slit of this flow cell is formed by processing a single lens, and the parallelism and width of the slit can be well guaranteed. Since the slit and the lens are a whole, the assembly of other parts does not affect the parallelism and width of the slit, greatly reducing assembly errors.

[0006] Furthermore, the body has a first end and a second end opposite to each other, and the first end and the second end of the body are respectively provided with through holes communicating with the cavity, and the two through holes are respectively installed with flow connectors including the inlet and the outlet.

[0007] Furthermore, the flow connector includes a connecting block, which has a first end and a second end facing each other. A flow channel is formed between the first end and the second end of the connecting block. A connecting plate is fixed to the first end of the connecting block. Threaded holes for screwing are correspondingly formed on both the connecting plate and the body. A sealing ring is fitted onto the second end of the connecting block. After the connecting block is inserted into the through hole, the connecting plate is screwed to the body.

[0008] Furthermore, the body also has a first side and a second side facing each other, and the first side and the second side of the body are respectively provided with grooves inward, and a retaining ring is screwed into the groove.

[0009] Furthermore, the sealing ring is made of perfluoroether O-type. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the flow cell described in an embodiment of the present invention.

[0011] In the diagram, 1-body; 2-cavity; 3-lens; 4-slit; 5-through hole; 6-flow connector; 61-connecting block; 62-flow channel; 63-connecting plate; 64-screw hole; 7-sealing ring; 8-groove; 9-retaining ring. Detailed Implementation

[0012] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0013] Combination Figure 1 The diagram illustrates a flow cell comprising a body 1, a cavity 2 within the body 1, a lens 3 connected to the outside installed within the cavity 2, the shape of the lens 3 being adapted to the cavity 2, a vertical slit 4 being provided inside the lens 3, an inlet and an outlet for liquid phase flow being provided at the upper and lower ends of the body 1 respectively, and a light source sensor being installed on the body 1.

[0014] In actual use, the liquid phase enters through the inlet and flows through lens 3. Light emitted by the light source enters from one side of the flow cell, i.e., one side of lens 3, and irradiates the sample. When the light passes through the sample solution, based on Beer-Lambert's law, the sample absorbs part of the light, and the remaining light is emitted from the other side of the flow cell, i.e., the other side of lens 3. After being absorbed by the light source sensor, it is converted into an electrical signal to obtain information such as the chemical composition and concentration in the liquid phase. The slit of this flow cell is formed by processing a whole lens 3, and the parallelism and width of the slit can be well guaranteed. Since the slit and lens 3 are a whole, the assembly of other parts does not affect the parallelism and width of the slit, greatly reducing assembly errors.

[0015] The main body 1 has a first end and a second end opposite to each other. The first end and the second end of the main body 1 are respectively provided with through holes 5 communicating with the cavity 2. The two through holes 5 are respectively installed with flow connectors 6 including inlets and outlets.

[0016] The flow connector 6 includes a connecting block 61, which has a first end and a second end. A flow channel 62 is provided between the first end and the second end of the connecting block 61. A connecting plate 63 is fixed to the first end of the connecting block 61. Both the connecting plate 63 and the body 1 have corresponding screw holes 64 for screwing. A sealing ring 7 is fitted to the second end of the connecting block 61. After the connecting block 61 is inserted into the through hole 5, the connecting plate 63 is screwed to the body 1.

[0017] The main body 1 is also provided with a first side and a second side opposite to each other. The first side and the second side of the main body 1 are respectively provided with grooves 8 inward, and a retaining ring 9 is screwed into the groove 8.

[0018] The sealing ring 7 is made of perfluoroether type O.

[0019] The sealing ring uses perfluoroether (FFKM) O-rings. Compared with PTFE gaskets, FFKM O-rings not only have the same resistance to acid and alkali corrosion and chemical solvents as PTFE, but also have better sealing performance and higher pressure resistance.

[0020] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A flow cell, characterized in that, The utility model relates to a liquid phase flow sensor, which comprises a body, a cavity arranged in the body, a lens mounted in the cavity and communicating with the outside, the shape of the lens being adapted to the cavity, a slit vertically arranged in the lens, an inlet and an outlet arranged at the upper and lower ends of the body respectively for liquid phase flow, and a light source sensor mounted on the body.

2. The flow cell of claim 1, wherein, The body is provided with opposite first and second ends, the first and second ends of the body are respectively provided with through holes communicating with the cavity, and two flow connection members containing the inlet and the outlet are respectively mounted in the through holes.

3. The flow cell of claim 2, wherein, The flow connection member comprises a connecting block provided with opposite first and second ends, a flow channel being arranged between the first and second ends of the connecting block, a connecting plate being fixed to the first end of the connecting block, screw holes being respectively arranged on the connecting plate and the body for screwing, and a sealing ring being sleeved on the second end of the connecting block, the connecting plate being screwed with the body after the connecting block is inserted into the through hole.

4. The flow cell of claim 2, wherein, The body is further provided with opposite first and second sides, recesses being respectively arranged in the first and second sides of the body, and a stop ring being screwed in the recesses.

5. The flow cell of claim 3, wherein, The sealing ring is made of perfluoroether O type.

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