CN218567208U

CN218567208U - Turbidity sensor

Info

Publication number: CN218567208U
Application number: CN202222406289.XU
Authority: CN
Inventors: 龚伟光
Original assignee: Jiaxing Daoyi Sensing Technology Co ltd
Current assignee: Jiaxing Daoyi Sensing Technology Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-03-03
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a turbidity sensor, including detecting head and shell, detect head and shell sealing connection, be equipped with the chip in the shell, it is close to shell one end both sides and is equipped with turbidity detection light source and the light source receiver be connected with the chip respectively to detect the head, detect overhead two light through-holes that are equipped with turbidity detection light source and light source receiver respectively, two of corresponding turbidity detection light source and light source receiver respectively of being equipped with the mutual symmetry of axis of light through-hole just to detecting the head and keeping away from the central slope of shell one end, two all be equipped with condensing lens in the light through-hole. The utility model discloses following beneficial effect has: through two condensing lens cooperation turbidity detection light sources and light source receiver, it has solved the unable fine parallel emission of light of current turbidity sensor to the technical problem who detects in the liquid and the unable fine parallel irradiation of the light of reflection on the light source receiver for the detection of turbidity is more accurate sensitive.

Description

Turbidity sensor

Technical Field

The utility model relates to an aquatic sensor technical field especially relates to a turbidity sensor.

Background

The turbidity sensor is mainly used for detecting the turbidity degree of liquid, and has wide application prospect in various industries. The current turbidity sensor adopts a 90-degree scattering light principle, and has two structural designs, one is to directly install a luminous turbidity detection light source and a light source receiver at the front end of the sensor, and the other is to install a luminous infrared turbidity detection light source and a silicon light source receiver inside the sensor and lead the light to the front end of the sensor through an optical fiber.

In practical use, as shown in fig. 1, light of the turbidity detection light source of the turbidity sensor is outwardly diffused at a certain angle, so that part of the light source cannot be well reflected back to the light source receiver, and the reflected light source also generates a certain angle of deviation, which causes that the light source cannot be received by the light source receiver, thereby reducing the detection accuracy of the turbidity sensor.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model provides a turbidity sensor, its unable fine parallel emission of light that has solved current turbidity sensor to detect in the liquid and the unable fine parallel irradiation of reflected light technical problem on light source receiver.

According to the utility model discloses a turbidity sensor that embodiment recorded, including detecting head and shell, detect head and shell sealing connection, be equipped with the chip in the shell, it is close to shell one end both sides and is equipped with turbidity detection light source and the light source receiver be connected with the chip respectively to detect the head, it is equipped with two light through-holes that correspond turbidity detection light source and light source receiver respectively to detect overhead two the mutual symmetry of axis of light through-hole just to detecting the head and keeping away from the central slope of shell one end, two all be equipped with condensing lens in the light through-hole.

The technical principle of the utility model is that: adopt condensing lens to refract the light that turbidity detected light source becomes certain angle and jets out for parallel light, finally shine in detecting liquid, the particulate matter that parallel light transmission contacted in the liquid this moment takes place the reflection because the plane of reflection is different, has led to the reflected light can become certain angle and scatter to light source receiver department, when the light of scattering contacted light source receiver's condensing lens, the refraction was parallel light, is received by light source receiver at last, specifically as shown in fig. 2.

Compared with the prior art, the utility model discloses following beneficial effect has: through two condensing lens cooperation turbidity detection light sources and light source receiver, it has solved the unable fine parallel emission of light of current turbidity sensor to the technical problem who detects in the liquid and the unable fine parallel irradiation of the light of reflection on the light source receiver for the detection of turbidity is more accurate sensitive.

Furthermore, two symmetrical inclined planes are arranged on two sides of one end, close to the shell, of the detection head, the two inclined planes incline towards the center of one end, close to the shell, of the detection head, the turbidity detection light source and the light source receiver are both installed on the inclined planes, and a transition platform is arranged between the two inclined planes.

Furthermore, a light guide column is arranged in the light ray through hole and is arranged on one side, far away from the shell, of the condensing lens.

Furthermore, one end, far away from the shell, of the light guide column is an inclined polishing surface, and the inclined polishing surface and the end face, far away from the shell, of the detection head are a plane.

Furthermore, the light ray through hole is a step shaft, the large end of the light ray through hole is positioned at one side close to the shell and aligned with the turbidity detection light source or the light source receiver, the condensing lens is arranged at the step of the light ray through hole, and the small end of the light ray through hole is filled with the light guide column.

Furthermore, a sealing groove is formed in the light through hole at one side, far away from the shell, of the detection head, and a sealing glue layer is arranged in the sealing groove.

Furthermore, a sealing ring is arranged between the detection head and the shell.

Furthermore, a fixing block is arranged on the transition platform, and the chip is installed on the fixing block.

Furthermore, a through mounting hole is formed in the detection head, a temperature sensor is arranged in the mounting hole, and the temperature sensor is connected with the chip.

Drawings

Fig. 1 is a schematic diagram of the operation of a conventional turbidity sensor.

Fig. 2 is a schematic diagram of a turbidity sensor according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a turbidity sensor according to an embodiment of the present invention.

Fig. 4 is a partially enlarged view of a portion a of fig. 3.

Fig. 5 is a sectional view of B-B of fig. 3.

In the above drawings: 100. a detection head; 101. an inclined surface; 102. a transition platform; 103. a fixed block; 110. a light ray through hole; 111. a large end; 112. a small end; 113. a step; 120. a condenser lens; 130. a light guide pillar; 131. inclining the polishing surface; 140. a sealing groove; 141. sealing the adhesive layer; 150. a groove; 151. a seal ring; 160. mounting holes; 161. a temperature sensor; 200. a housing; 210. a chip; 211. a turbidity detection light source; 212. a light source receiver.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

The turbidity sensor as shown in fig. 2-4 includes a detection head 100 and a housing 200, the detection head 100 is hermetically connected to the housing 200, a chip 210 is disposed in the housing 200, a turbidity detection light source 211 and a light source receiver 212 electrically connected to the chip 210 are respectively mounted on two sides of one end of the detection head 100 close to the housing 200, the light source receiver 212 can be a light receiver of TSL257 type, two light through holes 110 corresponding to the turbidity detection light source 211 and the light source receiver 212 respectively are disposed on the detection head 100, the light source for emitting light from the turbidity detection light source 211 and receiving reflected light from the light source receiver 212 are disposed on the detection head 100, axes of the two light through holes 110 are mutually symmetric and inclined toward a center of one end of the detection head 100 far from the housing 200, so that light emitted from the turbidity detection light source 211 can be reflected back to the light source receiver 212, a condenser lens 120 is disposed in each of the two light through holes 110, and the specific condenser lens 120 is a convex lens.

As shown in fig. 4, two symmetrical inclined planes 101 are disposed on two sides of one end of the detection head 100 close to the housing 200, the two inclined planes 101 are inclined toward the center of one end of the detection head 100 close to the housing 200, the turbidity detection light source 211 and the light source receiver 212 are both mounted on the inclined planes 101, a transition platform 102 is disposed between the two inclined planes 101, and the turbidity detection light source 211 and the light source receiver 212 are prevented from interfering with each other by the inclined planes 101 and the transition platform 102.

As shown in fig. 4, a light guide bar 130 is disposed in the light passing hole, and the light guide bar 130 is disposed on a side of the condensing lens 120 away from the housing 200, and plays a role of guiding light to pass through, which is the same as that of an optical fiber.

As shown in fig. 4, the end of the light guide bar 130 away from the housing 200 is an inclined polished surface 131, and the inclined polished surface 131 and the end surface of the detection head 100 away from the housing 200 are a plane, i.e. after polishing, the surface roughness of the inclined polished surface 131 is less than 0.8 μm, which reaches the standard of a mirror surface and avoids affecting the emission and injection of light.

As shown in fig. 4, the light through hole 110 is a step 113 axis, the large end 111 of the light through hole 110 is located near one side of the housing 200 and aligned with the turbidity detecting light source 211 or the light source receiver 212, the condensing lens 120 is installed at the step 113 of the light through hole 110, and the light guide bar 130 fills up the small end 112 of the light through hole 110.

As shown in fig. 4, a sealing groove 140 is disposed at the light through hole 110 of the detection head 100 on a side away from the housing 200, and a sealant layer 141 is disposed in the sealing groove 140, so as to prevent liquid from flowing into the sensor from a gap between the light guide bar 130 and the light through hole 110.

As shown in fig. 4, a sealing ring 151 is disposed between the detection head 100 and the housing 200, a groove 150 is disposed on the detection head 100, and the sealing ring 151 is disposed in the groove 150 to provide a waterproof function.

As shown in fig. 5, a fixing block 103 is integrally formed on the transition platform 102, and a chip 210 is mounted on the fixing block 103 to fix the chip 210.

As shown in fig. 5, a through mounting hole 160 is formed on the detection head 100, a temperature sensor 161 is fixed in the mounting hole 160 by a sealant, the temperature sensor 161 is electrically connected to the chip 210, and can detect the temperature of water for being used as reference data of turbidity, and the specific type of the temperature sensor 161 is WZP-035, such as WZP-035

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A turbidity sensor, includes detects head and shell, detect head and shell sealing connection, its characterized in that: the shell is internally provided with a chip, the two sides of the detection head close to one end of the shell are respectively provided with a turbidity detection light source and a light source receiver which are connected with the chip, the detection head is provided with two light through holes which respectively correspond to the turbidity detection light source and the light source receiver, the two light through holes are mutually symmetrical in axis and incline towards the center of the detection head far away from one end of the shell, and the two light through holes are internally provided with condensing lenses.

2. A turbidity sensor according to claim 1, wherein: two symmetrical inclined planes are arranged on two sides of one end, close to the shell, of the detection head, the two inclined planes incline towards the center, close to one end of the shell, of the detection head, the turbidity detection light source and the light source receiver are both installed on the inclined planes, and a transition platform is arranged between the two inclined planes.

3. A turbidity sensor according to claim 1, wherein: and a light guide column is arranged in the light ray through hole and is arranged on one side of the condensing lens, which is far away from the shell.

4. A turbidity sensor according to claim 3, wherein: the end, far away from the shell, of the light guide column is an inclined polishing surface, and the inclined polishing surface and the end face, far away from the shell, of the detection head are a plane.

5. A turbidity sensor according to claim 3, wherein: the light through hole is a step shaft, the large end of the light through hole is positioned at one side close to the shell and aligned with the turbidity detection light source or the light source receiver, the condensing lens is arranged at the step of the light through hole, and the small end of the light through hole is filled with the light guide column.

6. A turbidity sensor according to claim 5, wherein: the light through hole position of one side of the detection head, which is far away from the shell, is provided with a sealing groove, and a sealing glue layer is arranged in the sealing groove.

7. A turbidity sensor according to claim 1, wherein: and a sealing ring is arranged between the detection head and the shell.

8. A turbidity sensor according to claim 2, wherein: the transition platform is provided with a fixed block, and the chip is installed on the fixed block.

9. A turbidity sensor according to claim 1, wherein: the detection head is provided with a through mounting hole, a temperature sensor is arranged in the mounting hole, and the temperature sensor is connected with the chip.