Device with on-line automatic prism cleaning function and replaceable brush
The automatic cleaning device of the online refractometer uses a brush structure and motor drive to achieve self-cleaning of the optical prism, which solves the problem of prism dirt affecting accuracy and precision, and improves cleaning efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YUANSHU OPTOELECTRONICS TECHNOLOGY CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-15
AI Technical Summary
The existing online refractometer prisms lack self-cleaning capabilities, causing surface dirt to affect accuracy and precision, requiring manual cleaning and reducing efficiency.
A device with online automatic cleaning function was designed. It uses a brush structure to self-clean the surface of an optical prism. The brush is driven by a motor to rotate and remove dirt. The direction of the brush is controlled by a sealing ring and a reversing light plate to prevent dust from entering.
It achieves self-cleaning of optical prisms, avoiding the impact of dirt on accuracy and precision, eliminating the need for downtime and improving cleaning efficiency.
Smart Images

Figure CN224247585U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of online refractometer technology, and in particular to a device with an online automatic prism cleaning function and a replaceable brush. Background Technology
[0002] A refractometer, also known as a refractive index meter, is an instrument that uses light to test the concentration of a liquid. It is used to determine the refractive index, birefringence, and optical properties. The refractive index is one of the important physical constants of a substance, and online refractometers are also a type of online refractometer. However, the prisms on existing online refractometers generally do not have a self-cleaning function, which easily leads to the accumulation of dirt on the surface of the optical prism, thereby affecting the accuracy and precision of the optical prism. In this case, the instrument needs to be stopped and manually disassembled and cleaned, which affects the cleaning efficiency of the instrument. Utility Model Content
[0003] The problem solved by this utility model is to provide a device with an online automatic prism cleaning function and a replaceable brush. The device can perform self-cleaning of the instrument through the brush structure, thereby cleaning the surface of the optical prism and preventing dirt from affecting the accuracy and precision of the prism. The device does not need to stop the instrument, thus improving the cleaning efficiency.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a device with an online automatic prism cleaning function and a replaceable brush, comprising a brush, a brush holder, a brush shaft, a front shell, a sealing ring, a PTFE gasket, a copper sleeve, a shaft sleeve, a motor, a fixed inner shell, a motor shaft fixing sleeve, and a brush shaft fixing sleeve. The motor is mounted on the bottom outer wall of the fixed inner shell, and the motor shaft fixing sleeve is mounted on the top of the fixed inner shell. One side of the motor's output shaft is fixed to the inner wall of the motor shaft fixing sleeve. A brush shaft fixing sleeve is engaged at the top of the fixing sleeve. A brush shaft is fixedly connected to the brush shaft fixing sleeve. A bushing is sleeved on the brush shaft, and the bushing is located above the brush shaft fixing sleeve. A copper sleeve is installed on the outer wall of the brush shaft at the top of the bushing. PTFE gaskets are symmetrically installed on the brush shaft. Sealing rings are distributed on the brush shaft. A front shell is threaded to the top of the fixing inner shell. A brush bracket is threaded to the top of the brush shaft. A brush is installed on one outer wall of the brush bracket.
[0005] Preferably, a prism is installed on the top inner wall of the fixed inner shell, and the top of the prism is engaged with the inner wall of the front shell.
[0006] Preferably, a first commutator light plate is installed between the motor shaft fixing sleeve and the fixing inner shell, and a second commutator light plate is installed between the shaft sleeve and the motor shaft fixing sleeve.
[0007] Preferably, the sealing ring and the PTFE gasket are alternately installed on the outside of the brush shaft.
[0008] The beneficial effects of this invention are: the brush structure can perform self-cleaning of the instrument, thereby cleaning the surface of the optical prism and preventing dirt from affecting the accuracy and precision of the prism. This eliminates the need to stop the instrument from operating, thus improving the cleaning efficiency of the instrument. Attached Figure Description
[0009] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0010] Figure 2 This is an exploded structural diagram of the present invention;
[0011] Figure 3 This is an exploded structural diagram of the other side of this utility model.
[0012] Legend:
[0013] 1. Brush; 2. Brush bracket; 3. Brush shaft; 4. Front housing; 5. Sealing ring; 6. PTFE gasket; 7. Copper sleeve; 8. Bushing; 9. Prism; 10. Motor; 11. Fixed inner housing; 12. First commutator light panel; 13. Motor shaft fixing sleeve; 14. Brush shaft fixing sleeve; 15. Second commutator light panel. Detailed Implementation
[0014] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0015] Specific implementation examples are given below.
[0016] See Figures 1-3A device with an online automatic prism cleaning function and a replaceable brush includes a brush 1, a brush holder 2, a brush shaft 3, a front shell 4, a sealing ring 5, a PTFE gasket 6, a copper sleeve 7, a bushing 8, a motor 10, a fixed inner shell 11, a motor shaft fixing sleeve 13, and a brush shaft fixing sleeve 14. The motor 10 is mounted on the bottom outer wall of the fixed inner shell 11, and the motor shaft fixing sleeve 13 is mounted on the top of the fixed inner shell 11. One side of the output shaft of the motor 10 is fixed to the inner wall of the motor shaft fixing sleeve 13. The brush shaft fixing sleeve 14 is engaged at the top of the motor shaft fixing sleeve 13. A brush shaft 3 is fixedly connected to the brush shaft fixing sleeve 14. A bushing 8 is sleeved on the brush shaft 3, and the bushing 8 is located above the brush shaft fixing sleeve 14. A copper sleeve 7 is mounted on the outer wall of the brush shaft 3 at the top of the bushing 8. PTFE gaskets 6 are symmetrically mounted on the brush shaft 3. Various parts of the brush shaft 3 are also mounted on the brush shaft 3. The device includes a sealing ring 5, a front shell 4 threadedly connected to the top of the fixed inner shell 11, a brush bracket 2 threadedly connected to the top of the brush shaft 3, and a brush 1 mounted on one side of the outer wall of the brush bracket 2. A prism 9 is mounted on the inner wall of the top of the fixed inner shell 11, and the top of the prism 9 is engaged with the inner wall of the front shell 4. The prism 9 can refract light to meet the requirements. A first reversing light plate 12 is installed between the motor shaft fixing sleeve 13 and the fixed inner shell 11, and a second reversing light plate 15 is installed between the shaft sleeve 8 and the motor shaft fixing sleeve 13. The brush 1 can be rotated to the left or right by the indication of the first reversing light plate 12 and the second reversing light plate 15. The sealing ring 5 and the PTFE gasket 6 are alternately installed on the outside of the brush shaft 3 to facilitate the blocking of dust by the sealing ring 5 and the PTFE gasket 6, preventing dust from entering the inside of the device and increasing the cleanliness of the inside of the device.
[0017] Working principle: When prism 9 becomes dirty, the dust is first blocked by the sealing ring 5 and the PTFE gasket 6 to prevent dust from entering the equipment. Then, motor 10 is started. At this time, the linkage between the motor shaft fixing sleeve 13 and the brush shaft fixing sleeve 14 causes the brush bracket 2 on the brush shaft 3 to rotate left and right. When brush 1 on the brush bracket 2 needs to rotate to the left, the first commutator light panel 12 is activated to emit light. Then, the brush shaft fixing sleeve 14 intermittently blocks the light from the first commutator light panel 12, causing it to flash. When brush 1 needs to rotate to the right, the second commutator light panel 15 is activated to emit light. Then, the brush shaft fixing sleeve 14 intermittently blocks the light from the second commutator light panel 15, causing it to flash. 15. During the rotation of brush 1, the prism 9 on the front shell 4 can be cleaned. When brush 1 is not in operation, it will stay on the left or right side. Then, the restriction between motor shaft fixing sleeve 13 and brush shaft fixing sleeve 14 is released, and motor 10 is started to make motor shaft fixing sleeve 13 rotate. The protrusion on motor shaft fixing sleeve 13 squeezes brush shaft fixing sleeve 14, so that brush 1 is in a non-contact suspended state to prevent long-term permanent deformation of brush 1. This can achieve a higher cleaning effect and extend the service life of brush 1. The instrument can be self-cleaned by brush 1 to clean the surface of optical prism 9 and prevent dirt from affecting the accuracy and precision of prism 9. The instrument does not need to be stopped, thus improving the cleaning efficiency of the instrument.
[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device with an online automatic prism cleaning function and a replaceable brush, characterized in that, The assembly includes a brush (1), a brush holder (2), a brush shaft (3), a front housing (4), a sealing ring (5), a PTFE gasket (6), a copper sleeve (7), a bushing (8), a motor (10), a fixed inner housing (11), a motor shaft fixing sleeve (13), and a brush shaft fixing sleeve (14). The motor (10) is mounted on the bottom outer wall of the fixed inner housing (11), and the motor shaft fixing sleeve (13) is mounted on the top of the fixed inner housing (11). The output shaft of the motor (10) is fixed to the inner wall of the motor shaft fixing sleeve (13), and the brush shaft fixing sleeve (14) is engaged with the top of the motor shaft fixing sleeve (13). A brush shaft (3) is fixedly connected to the brush shaft fixing sleeve (14). A bushing (8) is sleeved on the brush shaft (3) and the bushing (8) is located above the brush shaft fixing sleeve (14). A copper sleeve (7) is installed on the outer wall of the brush shaft (3) at the top of the bushing (8). A PTFE gasket (6) is symmetrically installed on the brush shaft (3). Sealing rings (5) are distributed on the brush shaft (3). The top of the fixed inner shell (11) is threadedly connected to the front shell (4). The top of the brush shaft (3) is threadedly connected to the brush bracket (2). A brush (1) is installed on one side of the outer wall of the brush bracket (2).
2. The device with online automatic prism cleaning function and replaceable brush according to claim 1, characterized in that, A prism (9) is installed on the top inner wall of the fixed inner shell (11), and the top of the prism (9) is engaged with the inner wall of the front shell (4).
3. The device with online automatic prism cleaning function and replaceable brush according to claim 1, characterized in that, A first commutator light plate (12) is installed between the motor shaft fixing sleeve (13) and the fixing inner shell (11), and a second commutator light plate (15) is installed between the bushing (8) and the motor shaft fixing sleeve (13).
4. The device with online automatic prism cleaning function and replaceable brush according to claim 1, characterized in that, The sealing ring (5) and the PTFE gasket (6) are alternately installed on the outside of the brush shaft (3).