Cleaning structure of water quality detection COD sensor

Abstract

The utility model provides a kind of cleaning structure of water quality detection COD sensor, it is related to environmental monitoring technical field, including upper casing, lower casing and main casing, the upper casing, lower casing are connected respectively by the thread of main casing with main casing, and motor mounting seat is equipped in the upper casing;Motor, the output end of the motor is connected with motor output shaft;Cleaning brush seat, it is sleeved on the motor output shaft, and can slide up and down along its axial direction;Long screw, it is installed on the cleaning brush seat;Rubber tube, it is sleeved on the long screw;The utility model is by being equipped with square structure at the connecting place of cleaning brush seat and motor output shaft, so that cleaning brush seat can slide freely along the axial direction of output shaft but not relative rotation, cooperate the sliding range limitation of sliding interval on main casing, when rubber tube meets glass surface protruding contaminant during cleaning process, cleaning brush seat can automatically adjust position up and down, avoid the problem of jamming caused by rigid contact.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a clean structure for a COD sensor for water quality detection. Background Technology

[0002] In the field of environmental monitoring technology, COD (chemical oxygen demand) sensors for water quality testing are core equipment for assessing the degree of water pollution and ensuring the safety of the water environment. Their detection accuracy directly depends on the cleanliness of the surface of key sensor components (such as signal transmission glass).

[0003] However, the existing cleaning structures of COD sensors have significant design flaws in practical applications. Most use pressure pads to fix the cleaning components, and the cleaning components are attached to the sensor glass by manually controlling the installation force. This installation method requires extremely high operational precision. If the installation force is too great, it can easily cause the cleaning components to make rigid contact with the glass surface, causing the cleaning mechanism to jam and fail to operate normally. If the installation force is too small, the cleaning components will not adhere sufficiently to the glass surface, and contaminant residue will cause detection interference. At the same time, the loose connection of the components will increase the risk of structural shaking during the cleaning process, further affecting the long-term stable operation of the sensor. Furthermore, the existing cleaning structures lack versatility and ease of maintenance. Cleaning components (such as cleaning brushes and wiping parts) are mostly integrated with the main body of the cleaning mechanism or fixedly connected. When it is necessary to replace worn cleaning components to ensure cleaning effect, or to adapt different types of cleaning components according to different water quality scenarios, it is necessary to disassemble the entire cleaning mechanism or even disassemble part of the sensor housing. The operation process is complicated and time-consuming, which not only increases the equipment maintenance cost and downtime, but may also cause accidental damage to the precision components inside the sensor during disassembly. It is difficult to meet the needs of efficient operation and maintenance and flexible adaptation of equipment in actual water quality monitoring scenarios.

[0004] A clean structure for a COD sensor for water quality detection is proposed. Utility Model Content

[0005] To address the shortcomings of the aforementioned background technology, this utility model proposes a cleaning structure for a COD sensor for water quality detection.

[0006] The technical solution of this utility model is achieved as follows: a cleaning structure for a COD water quality detection sensor, comprising:

[0007] The upper housing, lower housing, and main housing are respectively connected to the main housing via threads, and the upper housing is provided with a motor mounting base inside.

[0008] An electric motor is mounted on the motor mounting base, and the output end of the motor is connected to a motor output shaft;

[0009] The cleaning brush holder is sleeved on the motor output shaft and can slide up and down along its axial direction;

[0010] A long screw is installed on the cleaning brush holder;

[0011] A rubber tube, fitted onto the long screw, is used to clean the sensor glass surface;

[0012] The main housing has a semi-circular arc portion to accommodate the end of the long screw, preventing it from exceeding the range of the main housing during rotation.

[0013] Preferably, the cleaning brush holder has a square fixing position, and the connection between the cleaning brush holder and the motor output shaft is also a square structure, so that the cleaning brush holder can slide up and down along the motor output shaft but does not rotate relative to it.

[0014] Preferably, at least one rubber ring and at least one oil seal are provided between the motor output shaft and the main housing.

[0015] Preferably, the main housing is provided with a sliding section to limit the vertical sliding range of the cleaning brush holder.

[0016] Preferably, the main housing has a lower plane and an upper plane, the upper plane is provided with an upper glass, the lower plane is provided with a lower glass, and the rubber tube on the long screw can contact the surfaces of the upper glass and the lower glass.

[0017] Preferably, the long screw and the cleaning brush holder are detachably connected.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model designs the connection between the cleaning brush holder and the motor output shaft as a square structure, allowing the cleaning brush holder to slide freely along the output shaft axis without relative rotation. Combined with the sliding range on the main housing, which limits the sliding range, the cleaning brush holder can automatically adjust its position up and down when the rubber tube encounters protruding contaminants on the glass surface during cleaning, avoiding jamming caused by rigid contact. At the same time, the rubber tube is made of elastic material, which not only ensures the effect of removing contaminants but also avoids scratching the glass surface, significantly improving the adaptability and long-term operational stability of the cleaning structure.

[0020] 2. The cleaning component of this utility model is fixed by a detachable connection between a long screw and a cleaning brush holder. When it is necessary to replace the rubber tube or adapt to components with different cleaning needs, it is not necessary to disassemble the entire cleaning mechanism. Only the long screw needs to be removed to complete the replacement, which is convenient. In addition, the semi-circular arc design of the main housing can accommodate the end of the long screw, preventing it from exceeding the range of the housing when rotating. This not only ensures the compactness of the structure, but also provides sufficient space for the installation and replacement of the cleaning component, further reducing the difficulty of maintenance and operation and reducing the use and maintenance costs of the equipment.

[0021] 3. This utility model utilizes the ingenious design of the housing to achieve thorough cleaning and facilitate installation and replacement. The main housing has parallel upper and lower planes, on which upper and lower glass are respectively mounted. The rubber tube of the cleaning component can simultaneously contact the surfaces of both glass pieces. Combined with the rotational action driven by the motor, it can achieve comprehensive cleaning of the key glass components of the sensor. At the same time, the sliding adjustment design of the cleaning brush base ensures that the rubber tube is always in contact with the glass surface, avoiding the cleaning dead corner problem caused by insufficient contact in traditional cleaning structures, thus ensuring the detection accuracy of the sensor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an appearance drawing of the present utility model;

[0024] Figure 2 This utility model Figure 1 An exterior view from another angle;

[0025] Figure 3 This utility model Figure 1 A cross-sectional view along the CC direction;

[0026] Figure 4 This utility model Figure 2 Sectional view along the BB direction;

[0027] Figure 5 This utility model Figure 1 Sectional view along the DD direction;

[0028] Figure 6 This is a schematic diagram of the main body casing of this utility model;

[0029] Figure 7 This is a cross-sectional view of the main casing of this utility model.

[0030] In the diagram: 1. Upper housing; 2. Lower housing; 3. Main housing; 4. Motor; 5. Motor output shaft; 6. Cleaning brush holder; 7. Motor mounting base; 8. Oil seal; 9. Rubber ring; 10. Long screw; 11. Rubber tube; 12. Sliding section; 13. Upper glass; 14. Lower glass; 15. Lower plane; 16. Semi-circular arc section; 17. Square fixing position; 18. Upper plane. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-7 As shown, a cleaning structure for a COD water quality detection sensor is an important component for ensuring sensor detection accuracy and avoiding interference from contaminant adhesion. Specifically, it includes an upper housing 1, a lower housing 2, a main housing 3, and a rubber tube 11. The upper housing 1 and lower housing 2 are connected to the main housing 3 via threads. The upper housing 1 has a motor mounting base 7 inside, on which a motor 4 is mounted. The motor 4 is screwed to the motor mounting base 7. The output end of the motor 4 is connected to a motor output shaft 5. A cleaning brush holder 6 is fitted onto the motor output shaft 5. These three components form a scraper assembly for transmission, connecting the scraper assembly to the main housing 3. The cleaning brush holder 6 can slide up and down along its axial direction. The cleaning brush holder 6 has a square fixing position 17 that mates with a corresponding shaft segment on the motor output shaft 5. Specifically, the connection between the cleaning brush holder 6 and the motor output shaft 5 is a square structure, allowing the cleaning brush holder 6 to slide up and down along the output shaft but preventing relative rotation.

[0033] In addition, a long screw 10 is installed on the cleaning brush holder 6. The long screw 10 and the cleaning brush holder 6 are preferably detachably connected. A rubber tube 11 is sleeved on the long screw 10. The rubber tube 11 is used to clean the surface of the sensor glass. The main housing 3 has a lower plane 15 and an upper plane 18 that are parallel to each other. The upper glass 13 is fixedly installed on the upper plane 18, and the lower glass 14 is correspondingly assembled on the lower plane 15. These two glass pieces are important components for the sensor to realize signal acquisition and transmission. Their surface cleanliness directly affects the working performance of the sensor. The rubber tube 11 sleeved on the long screw 10 can keep in contact with the surfaces of the upper glass 13 and the lower glass 14, providing basic conditions for cleaning. When the shaft of the motor 4 rotates, it drives the rubber tube 11 on the long screw 10 to scrape and clean the lower plane 15 and the upper plane 18. The cleaning brush holder 6 is not fixed to the motor output shaft 5 with a set screw, so it can slide up and down and adjust automatically without being jammed, effectively improving the adaptability and stability of cleaning.

[0034] To prevent the cleaning brush holder 6 from exceeding the preset range during its up-and-down sliding, thereby affecting normal operation or causing component damage, a sliding section 12 is specially set on the main housing 3. The sliding section 12 limits the sliding stroke of the cleaning brush holder 6 to ensure that it always moves within a safe and effective range. A semi-circular arc portion 16 is provided on the main housing 3 to accommodate the end of the long screw 10, preventing it from exceeding the range of the main housing 3 during rotation. A gap is opened in the middle of the main housing 3. The long screw 10 moves left and right around the semi-circular arc portion 16 on the main housing 3. The cut semi-circular arc can hide one end of the long screw 10 inside the main housing 3 without exceeding the range of the main housing 3.

[0035] In addition, see Figure 3 As shown, at least one rubber ring 9 and at least one oil seal 8 are provided between the motor output shaft 5 and the main housing 3, and the motor output shaft 5 and the main housing 3 are isolated by the rubber ring 9 and the two oil seals 8. The rubber ring 9 can use its own elasticity to tightly fit the gap between the shaft and the housing, blocking the intrusion path of external liquids and impurities. The two oil seals 8 form a double sealing barrier. By using the cooperation between their lips and the shaft surface, the sealing reliability is greatly improved, effectively preventing water, dust and other pollutants from entering the housing. This avoids the risk of short circuits, corrosion and other failures of the internal components of the motor 4 caused by water seepage, and provides a guarantee for the long-term stable operation of the cleaning structure. It ensures that the equipment can maintain good operating performance and service life under complex working conditions such as humidity and dust.

[0036] As described above, during the rotation of the rubber tube 11, if there are raised contaminants on the glass surface, the cleaning brush holder 6 can automatically slide up and down along the axial direction of the motor output shaft 5 (the sliding range is limited by the sliding interval 12), ensuring that the rubber tube 11 always stays in contact with the glass surface, avoiding damage to the glass or incomplete cleaning due to rigid contact; the rubber tube 11 can be made of nitrile rubber, which has a certain elasticity, and can scrape off contaminants on the glass surface during rotation and wiping without scratching the glass surface.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning structure for a COD sensor for water quality detection, characterized in that, include: The upper housing (1), the lower housing (2) and the main housing (3) are respectively connected to the main housing (3) through the threads of the main housing (3), and the upper housing (1) is provided with a motor mounting seat (7). A motor (4) is mounted on the motor mounting base (7), and the output end of the motor (4) is connected to a motor output shaft (5); The cleaning brush holder (6) is sleeved on the motor output shaft (5) and can slide up and down along its axial direction; A long screw (10) is installed on the cleaning brush holder (6); A rubber tube (11) is fitted onto the long screw (10) for cleaning the sensor glass surface; The main housing (3) is provided with a semi-circular arc portion (16) for accommodating the end of the long screw (10) to prevent it from exceeding the range of the main housing (3) during rotation.

2. The cleaning structure of the COD sensor for water quality detection according to claim 1, characterized in that: The cleaning brush holder (6) is provided with a square fixing position (17), and the connection between the cleaning brush holder (6) and the motor output shaft (5) is set with a square structure, so that the cleaning brush holder (6) can slide up and down along the motor output shaft (5) but does not rotate relative to it.

3. The cleaning structure of the COD sensor for water quality detection according to claim 1, characterized in that: At least one rubber ring (9) and at least one oil seal (8) are provided between the motor output shaft (5) and the main housing (3).

4. The cleaning structure of the COD sensor for water quality detection according to claim 1, characterized in that: The main housing (3) is provided with a sliding section (12) to limit the vertical sliding range of the cleaning brush holder (6).

5. The cleaning structure of the COD sensor for water quality detection according to claim 1, characterized in that: The main housing (3) has a lower plane (15) and an upper plane (18). An upper glass (13) is provided on the upper plane (18), and a lower glass (14) is provided on the lower plane (15). The rubber tube (11) on the long screw (10) can contact the surfaces of the upper glass (13) and the lower glass (14).

6. The cleaning structure of the COD sensor for water quality detection according to claim 1, characterized in that: The long screw (10) and the cleaning brush holder (6) are detachably connected.

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