Water quality metering assembly

Abstract

The utility model relates to a water quality metering assembly which comprises a main body, a quartz glass tube, a lower joint, an upper joint, an upper pressing block and a spring washer. According to the utility model, the upper joint and the lower joint which are made of soft plastics are propped against the two ends of the quartz glass tube, the pressing force of the upper joint and the lower joint on the quartz glass tube meets the requirement by utilizing the elastic force of the spring washer and the pressure of the upper pressing block, and the quartz glass tube is not easy to damage due to overlarge pressure. And on the other hand, the spring washer has a certain compression amount, so that even if the upper joint and the lower joint are shaken, the spring washer can prevent gaps from being generated between parts through certain recovery. Therefore, the sealing requirement of the quartz glass tube can be met, and a sealing ring is prevented from being arranged in the main body for sealing, so that the aging maintenance of the sealing ring is avoided, and the measurement accuracy and the performance of an instrument can be more easily kept stable for a long time after the instrument leaves a factory.

Description

Technical Field

[0001] The present application belongs to the field of environmental protection technology, and in particular relates to a water quality metering component. Background Art

[0002] The water quality metering component is a core unit in water quality environmental monitoring and analysis instruments. It is used to accurately measure the volume of various liquids involved in the reaction system so that the instrument can calculate the corresponding measured concentration. The measurement accuracy and stability of the water quality metering component have a significant impact on the instrument's final measurement results and are one of the determining factors for the quality and performance of water quality analysis instruments.

[0003] The metering components in existing water quality analyzers are equipped with sealing rings to ensure sealing performance. During use, the sealing rings often come into contact with corrosive liquids such as acids and alkalis, so they must be replaced after a period of time. During the replacement of the sealing rings, on the one hand, there are differences in the degree of wear between the old and new sealing rings themselves, and on the other hand, the disassembly and installation of the metering components are prone to human uncontrollable factors. Therefore, the water quality analyzer cannot guarantee the long-term stability of the measurement accuracy and performance of the metering components after leaving the factory. In addition, when judging and verifying the operating process or detecting and troubleshooting, the water quality analyzer often needs to observe the changes in the liquid level inside the metering component. The liquid level of some colorless liquids or less obvious foreign objects are not easy to observe in transparent glass containers, which brings troubles to the operation and maintenance of the instrument. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a water quality metering component in order to solve at least one of the above problems in the prior art.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a water quality metering component, comprising:

[0006] The main body has a first cavity, a second cavity and a third cavity therein; the second cavity and the third cavity are located at both ends of the first cavity and are connected thereto;

[0007] a quartz glass tube, installed in the first cavity;

[0008] a lower joint installed in the second cavity, the lower joint being made of soft plastic, abutting against the first end of the quartz glass tube, and having one end surface of the lower joint in contact with the end surface of the first end of the quartz glass tube;

[0009] an upper joint installed in the third cavity, the upper joint being made of soft plastic, abutting the second end of the quartz glass tube, with one end surface of the upper joint being in contact with the end surface of the second end of the quartz glass tube; the second end being an end opposite to the first end;

[0010] an upper pressing block connected to the main body and used to press the upper joint;

[0011] The spring washer is installed between the upper pressing block and the upper joint, and the spring washer can provide elastic force for the upper joint to squeeze the quartz glass tube during compression.

[0012] Preferably, the water quality metering component of the present invention further includes a lower pressure plate, which is fixed in the second cavity and located at the end of the lower joint away from the quartz glass tube, and the lower pressure plate abuts against the lower joint to support it.

[0013] Preferably, in the water quality metering component of the present invention, one side of the main body has an opening, the opening is connected to the first cavity, and the water quality metering component further includes a window plate, the window plate covers the opening.

[0014] Preferably, in the water quality metering component of the present invention, the materials used for the lower joint and the upper joint are both polytetrafluoroethylene.

[0015] Preferably, in the water quality metering component of the present invention, the end faces of both ends of the quartz glass tube are polished surfaces.

[0016] Preferably, in the water quality metering component of the present invention, the lower joint and the upper joint both have grooves, and the two ends of the quartz glass tube are respectively embedded in the grooves of the lower joint and the upper joint.

[0017] Preferably, the water quality metering component of the present invention further includes an emitting lamp group and a sensor group respectively arranged on both sides of the quartz glass tube, the emitting lamp group includes a plurality of emitting lamps, the sensor group includes sensors corresponding one-to-one to the plurality of the emitting lamps, and the sensors can receive the light emitted by the corresponding emitting lamps and sense the intensity of the light.

[0018] Preferably, in the water quality metering assembly of the present invention, the emitting lamp group includes a first emitting lamp, a second emitting lamp and a third emitting lamp arranged axially along the quartz glass tube, and the sensor group includes a first sensor, a second sensor and a third sensor arranged axially along the quartz glass tube.

[0019] Preferably, the water quality metering component of the present invention further includes a circuit board mounting groove, a transmitting lamp circuit board, a receiver circuit board and two side cover plates located on both radial sides of the quartz glass tube, the transmitting lamp circuit board and the receiver circuit board are respectively installed in the circuit board mounting grooves on both radial sides of the quartz glass tube; the transmitting lamp circuit board is electrically connected to the transmitting lamp group, and the receiver circuit board is electrically connected to the sensor group; the two side cover plates respectively cover the openings of the circuit board mounting grooves on both radial sides of the quartz glass tube.

[0020] Preferably, the water quality metering component of the present invention further includes a first lighting lamp and a second lighting lamp, wherein the first lighting lamp is electrically connected to the transmitting lamp circuit board, and the second lighting lamp is electrically connected to the receiver circuit board; the first lighting lamp and the second lighting lamp are used to illuminate the quartz glass tube.

[0021] The beneficial effects of the present invention are as follows: The present invention utilizes upper and lower joints made of soft plastic to abut the ends of the quartz glass tube. The elastic force of the spring washers and the pressure of the upper pressure block ensure that the upper and lower joints meet the required pressure against the quartz glass tube, while also preventing excessive pressure from damaging the tube. Furthermore, the spring washers exhibit a certain degree of compression, so even if the upper and lower joints are shaken, the spring washers can recover to prevent gaps between the components. Therefore, the present invention meets the sealing requirements of the quartz glass tube, avoids the need for a sealing ring within the main body, and eliminates the need for maintenance related to sealing ring aging. This makes it easier to maintain stable measurement accuracy and performance long after the instrument leaves the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solution of the present application is further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a top view of the water quality metering component structure of an embodiment of the present application;

[0024] Figure 2 yes Figure 1 CC cross-sectional view;

[0025] Figure 3 This is a schematic diagram of the arrangement of the emission light group and sensor group of the water quality metering component of an embodiment of the present application.

[0026] The reference numerals in the figures are:

[0027] 1. Lower pressure plate;

[0028] 2. Lower joint;

[0029] 3. Quartz glass tube;

[0030] 4. Transmitter light circuit board;

[0031] 5. Upper joint;

[0032] 6. Spring pad;

[0033] 7. Upper pressure block;

[0034] 8. Subject;

[0035] 9. Receiver circuit board;

[0036] 10. Side cover;

[0037] 11. Window panel;

[0038] 21. First emission light;

[0039] 22. Second emission light;

[0040] 23. The third transmitting light;

[0041] 24. First lighting lamp;

[0042] 31. First sensor;

[0043] 32. Second sensor;

[0044] 33. The third sensor;

[0045] 34. Second lighting lamp. DETAILED DESCRIPTION

[0046] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0049] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] This embodiment provides a water quality metering component, such as Figure 1 、 Figure 2 As shown, it includes: a main body 8, a quartz glass tube 3, a lower joint 2, an upper joint 5, an upper pressure block 7 and a spring washer 6.

[0051] The main body 8 comprises a first cavity, a second cavity, and a third cavity. The second and third cavities are located at opposite ends of the first cavity and communicate with it. The quartz glass tube 3 is installed in the first cavity. The lower joint 2, made of soft plastic, is installed in the second cavity. The lower joint 2 abuts the first end of the quartz glass tube 3, with one end surface of the lower joint 2 aligned with the end surface of the first end of the quartz glass tube 3. The upper joint 5, made of soft plastic, abuts the second end of the quartz glass tube 3, with one end surface of the upper joint 5 aligned with the end surface of the second end of the quartz glass tube 3. The second end is opposite the first end. An upper pressure block 7 is connected to the main body 8 and is used to compress the upper joint 5. A spring washer 6 is installed between the upper pressure block 7 and the upper joint 5. The spring washer 6 provides elastic force to squeeze the upper joint 5 against the quartz glass tube 3 during compression.

[0052] The water quality metering assembly provided in this embodiment utilizes a soft plastic upper joint 5 and lower joint 2 to abut the ends of a quartz glass tube 3. The elastic force of a spring washer 6 and the pressure of an upper pressure block 7 ensure that the upper and lower joints 5 and 2 meet the required pressure on the quartz glass tube 3, while also preventing excessive pressure from damaging the tube 3. Furthermore, the spring washer 6 has a certain degree of compression, so even if the upper and lower joints 5 and 2 are shaken, the spring washer 6 can recover to prevent gaps between the components. Therefore, the water quality metering assembly provided in this embodiment can meet the sealing requirements of the quartz glass tube 3, avoiding the need for a sealing ring within the main body 8 for sealing. There is no maintenance required to prevent aging of the sealing ring, and the measurement accuracy and performance of the instrument are more likely to remain stable long after it leaves the factory.

[0053] The water quality metering component provided in this embodiment is used as follows Figure 2As shown, the upper connector 5 and lower connector 2 serve as connecting fixtures for the quartz glass tube 3. They also communicate with the tube, allowing the liquid to be tested to flow into the tube. The lower connector 2 is equipped with a liquid inlet and outlet, while the upper connector 5 is connected to a peristaltic pump. The peristaltic pump pumps the liquid involved in the reaction into the quartz glass tube of the metering assembly for precise quantification, enabling subsequent analysis and calculation of the concentration of the test liquid.

[0054] In an optional embodiment, if Figure 2 As shown, the water quality metering assembly further includes a lower pressure plate 1, which is fixed within the second cavity and located at the end of the lower joint 2 facing away from the quartz glass tube 3. The lower pressure plate 1 abuts against the lower joint 2 to provide support. In this embodiment, the lower pressure plate 1 is fixed within the second cavity, providing sufficient support for the lower joint 2, thereby pressing the lower joint 2 against the end of the quartz glass tube 3.

[0055] This embodiment provides an assembly method for the water quality metering assembly. First, take the main body 8, fix the lower pressure plate 1 and the lower joint 2 in the second cavity of the main body 8 with screws, then place the quartz glass tube 3 into the first cavity and dock it with the lower joint 2; then install the upper joint 5 into the third cavity and dock it with the quartz glass tube 3; finally, install the spring washer 6 on the upper joint 5, and install the upper pressure block 7 into the third cavity to compress the spring washer 6 and the upper joint 5. The assembly of the water quality metering assembly is completed.

[0056] The upper pressing block 7 and the main body 8 can be connected by threads, so that the pressure applied to the spring washer 6 is gradually increased during the assembly process to reach a suitable force.

[0057] In an optional embodiment, one side of the main body 8 has an opening, which is connected to the first cavity, such as Figure 1 As shown, the water quality measurement assembly further includes a viewing window plate 11, which covers the opening. In this embodiment, the opening and viewing window plate 11 facilitate observation of the liquid in the quartz glass tube 3 from outside the water quality measurement assembly. The viewing window plate 11 is transparent or translucent to provide both dustproofing and light transmission.

[0058] In an optional embodiment, the lower connector 2 and the upper connector 5 are both made of polytetrafluoroethylene (PTFE). This material has good corrosion resistance and a certain degree of deformation, making it suitable as the material for the lower connector 2 and the upper connector 5 in this embodiment.

[0059] In an optional embodiment, the end surfaces of both ends of the quartz glass tube 3 are polished flat surfaces. After being polished, the end surfaces of both ends of the quartz glass tube 3 have high flatness, which is conducive to maintaining a seal after abutting with the lower joint 2 and the upper joint 5.

[0060] In an optional embodiment, if Figure 2 As shown, both the lower joint 2 and the upper joint 5 have grooves, and the two ends of the quartz glass tube 3 are respectively embedded in the grooves of the lower joint 2 and the upper joint 5. In this embodiment, the structure of the groove can better wrap the ends of the quartz glass tube 3 and improve the sealing performance.

[0061] In an optional embodiment, if Figure 3 As shown, the water quality metering assembly also includes a light assembly and a sensor assembly, each positioned on either side of the quartz glass tube 3. The light assembly includes a plurality of light emitters, and the sensor assembly includes sensors corresponding to each of the light emitters. The sensors are capable of receiving light from the corresponding light emitters and sensing the light intensity. In this embodiment, the sensors operate as follows: light emitted by the light assembly passes through the transparent quartz glass tube 3 and is received by the sensor assembly. Different liquid levels within the quartz glass tube cause different refraction angles, resulting in different light intensities received by the sensor. This allows the liquid level within the quartz glass tube 3 to be measured, thereby calculating the liquid volume.

[0062] In an optional embodiment, if Figure 3 As shown, the emitting lamp group includes a first emitting lamp 21, a second emitting lamp 22, and a third emitting lamp 23 arranged axially along the quartz glass tube 3. The sensor group includes a first sensor 31, a second sensor 32, and a third sensor 33 arranged axially along the quartz glass tube 3. In this embodiment, by arranging three groups of emitting lamps and sensors axially along the quartz glass tube 3, more comprehensive light parameters are obtained, thereby obtaining more accurate measurement data.

[0063] In an optional embodiment, if Figure 2 、 Figure 3 As shown, the water quality metering assembly further includes circuit board mounting slots located on either side of the quartz glass tube 3, a transmitter circuit board 4, a receiver circuit board 9, and two side covers 10. The transmitter circuit board 4 and the receiver circuit board 9 are mounted in the circuit board mounting slots on either side of the quartz glass tube 3. The transmitter circuit board 4 is electrically connected to the transmitter light assembly, and the receiver circuit board 9 is electrically connected to the sensor assembly. The two side covers 10 cover the openings of the circuit board mounting slots on either side of the quartz glass tube 3. In this embodiment, the circuit board mounting slots provided in the main body 8 facilitate the installation of the transmitter circuit board 4 and the receiver circuit board 9 on either side of the quartz glass tube 3. The side covers 10 protect the transmitter light assembly, sensor assembly, transmitter circuit board 4, and receiver circuit board 9 within the quartz glass tube 3.

[0064] In an optional embodiment, if Figure 3As shown, the water quality metering assembly further includes a first illuminating lamp 24 and a second illuminating lamp 34. The first illuminating lamp 24 is electrically connected to the transmitter circuit board 4, and the second illuminating lamp 34 is electrically connected to the receiver circuit board 9. The first illuminating lamp 24 and the second illuminating lamp 34 are used to illuminate the quartz glass tube 3. In this embodiment, both the first illuminating lamp 24 and the second illuminating lamp 34 can illuminate the quartz glass tube 3, thereby allowing the liquid level and any abnormal conditions to be clearly observed through the transparent window plate 11.

[0065] Based on the above-mentioned ideal embodiments of this application, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A water quality metering component, characterized in that: include: A main body (8) having a first cavity, a second cavity and a third cavity therein; the second cavity and the third cavity are located at both ends of the first cavity and are in communication with the first cavity; A quartz glass tube (3) is installed in the first cavity; A lower joint (2) is installed in the second cavity, the lower joint (2) is made of soft plastic, the lower joint (2) abuts against the first end of the quartz glass tube (3), and one end surface of the lower joint (2) is in contact with the end surface of the first end of the quartz glass tube (3); An upper joint (5) is installed in the third cavity. The upper joint (5) is made of soft plastic. The upper joint (5) abuts against the second end of the quartz glass tube (3). One end surface of the upper joint (5) fits with the end surface of the second end of the quartz glass tube (3); the second end is the opposite end of the first end. An upper pressing block (7) connected to the main body (8) and used to press the upper joint (5); A spring washer (6) is installed between the upper pressing block (7) and the upper joint (5), and the spring washer (6) can provide the upper joint (5) with elastic force to squeeze the quartz glass tube (3) during compression.

2. The water quality metering component according to claim 1, characterized in that: The water quality metering component further comprises a lower pressure plate (1), which is fixed in the second cavity and located at an end of the lower joint (2) facing away from the quartz glass tube (3), and the lower pressure plate (1) abuts against the lower joint (2) to support it.

3. The water quality metering component according to claim 2, characterized in that: One side of the main body (8) has an opening, the opening being connected to the first cavity, and the water quality metering component further comprises a window plate (11), the window plate (11) covering the opening.

4. The water quality metering component according to any one of claims 1 to 3, characterized in that: The materials used for the lower joint (2) and the upper joint (5) are both polytetrafluoroethylene.

5. The water quality metering component according to any one of claims 1 to 3, characterized in that: The end surfaces at both ends of the quartz glass tube (3) are polished flat surfaces.

6. The water quality metering component according to any one of claims 1 to 3, characterized in that: The lower joint (2) and the upper joint (5) both have grooves, and the two ends of the quartz glass tube (3) are respectively embedded in the grooves of the lower joint (2) and the upper joint (5).

7. The water quality metering component according to any one of claims 1 to 3, characterized in that: The water quality metering component further comprises an emitting lamp group and a sensor group respectively arranged on both sides of the quartz glass tube (3), wherein the emitting lamp group comprises a plurality of emitting lamps, and the sensor group comprises sensors corresponding to the plurality of emitting lamps one by one, and the sensors are capable of receiving light emitted by the corresponding emitting lamps and sensing the intensity of the light.

8. The water quality metering assembly according to claim 7, characterized in that: The emitting lamp group comprises a first emitting lamp (21), a second emitting lamp (22), and a third emitting lamp (23) arranged axially along the quartz glass tube (3); and the sensor group comprises a first sensor (31), a second sensor (32), and a third sensor (33) arranged axially along the quartz glass tube (3).

9. The water quality metering component according to claim 7, characterized in that: The water quality metering component further comprises a circuit board mounting groove, a transmitting light circuit board (4), a receiver circuit board (9) and two side covers (10) located on both radial sides of the quartz glass tube (3); the transmitting light circuit board (4) and the receiver circuit board (9) are respectively mounted in the circuit board mounting grooves on both radial sides of the quartz glass tube (3); the transmitting light circuit board (4) is electrically connected to the transmitting light group, and the receiver circuit board (9) is electrically connected to the sensor group; the two side covers (10) respectively cover the openings of the circuit board mounting grooves on both radial sides of the quartz glass tube (3).

10. The water quality metering component according to claim 9, characterized in that: The water quality metering component further comprises a first lighting lamp (24) and a second lighting lamp (34), wherein the first lighting lamp (24) is electrically connected to the transmitting lamp circuit board (4), and the second lighting lamp (34) is electrically connected to the receiver circuit board (9); the first lighting lamp (24) and the second lighting lamp (34) are used to illuminate the quartz glass tube (3).

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