Proximity switch water-cooling protection device in high-temperature environment
By designing a proximity switch water-cooling protection device in a high-temperature environment, the water-cooled shell and circulating cooling water are used to cool down, and through the structure of the drive shaft and the iron barrier, the proximity switch can work normally in a high-temperature environment, solving the problem of limited proximity switch application in the medium and high-temperature environment of the metallurgy industry.
Patent Information
- Application Number
- CN202421218462.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-03-04
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The high-temperature environment in the metallurgical industry limits the application of proximity switches, and the prior art is difficult to make the proximity switch work normally in high-temperature environments.
A proximity switch water-cooling protection device in a high-temperature environment is designed, using a water-cooled shell and circulating cooling water to cool down, and through the structure of the drive shaft and the barrier iron, the proximity switch can work normally in a high-temperature environment.
The ambient temperature around the proximity switch is significantly reduced, allowing it to output signals normally and achieve normal use in high temperature environments.
Smart Images
Figure CN222655617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a water-cooling protection device capable of enabling a proximity switch to work normally in a high-temperature environment, and belongs to the technical field of protection equipment for signal detection and control components in the metallurgical industry. Background Art
[0002] A proximity switch is a switch type sensor (i.e. a contactless switch). It has the characteristics of a travel switch and a micro switch, and has the advantages of sensing performance, reliable action, stable performance, fast frequency response, long service life, strong anti-interference ability, etc. It is also waterproof, shockproof, and corrosion-resistant, and has been widely used in various control and detection equipment. However, because the proximity switch has an electronic circuit inside, it cannot work at too high a temperature, generally below 80°C.
[0003] The metallurgical industry uses a large number of automated control systems in the production process. These systems cannot do without proximity switches for detection and control. However, the characteristics of the metallurgical industry determine that its working environment is extremely harsh. The temperature of molten steel and billets is above 1000℃, and the temperature nearby is as high as 200℃. General electronic equipment that does not have high temperature resistance cannot be used. At present, in the metallurgical industry, ordinary proximity switches are not able to withstand high temperatures, so their application is greatly limited. How to use proximity switches for signal detection in high temperature environments is an important issue facing technicians. Utility Model Content
[0004] The problem to be solved by the utility model is to provide a water-cooling protection device for a proximity switch in a high-temperature environment, which can significantly reduce the ambient temperature around the proximity switch, so that the proximity switch can output normal signals, thereby achieving the purpose of using the proximity switch in a high-temperature environment.
[0005] The technical solution to solve the above technical problems is:
[0006] The invention discloses a water-cooled protection device for a proximity switch in a high-temperature environment, which consists of a water-cooled shell, an upper cover, a paddle, a transmission shaft, an iron stop, and a proximity switch. The water-cooled shell is a cube with a cavity in the middle. The side wall and the bottom surface of the water-cooled shell are a double-layer structure, and circulating cooling water is poured into the double-layer structure. The upper cover is placed on the upper end of the water-cooled shell and is closed and connected to the water-cooled shell. A transmission shaft hole is provided on the upper part of the side wall of the water-cooled shell, and the transmission shaft is installed in the transmission shaft hole. The transmission shaft outside the water-cooled shell is connected to a vertically placed paddle, and the plate surface of the paddle is perpendicular to the outer wall of the water-cooled shell. The transmission shaft inside the water-cooled shell is connected to a vertical iron stop. The proximity switch is fixed in the inner cavity of the water-cooled shell, the trigger end of the proximity switch is opposite to the iron stop, and the distance between the trigger end of the proximity switch and the iron stop is greater than the trigger distance of the proximity switch. The signal output line of the proximity switch is connected to an external control device.
[0007] The water-cooled protection device for the proximity switch in the above-mentioned high-temperature environment has a water inlet pipe and an overflow pipe on the opposite side walls of the water-cooled shell, the water inlet pipe is below the side wall, and the overflow pipe is above the side wall. The water inlet pipe and the overflow pipe are respectively connected to the circulating water pipeline. A signal output line conduit is also opened above the side wall of the water-cooled shell, and the signal output line of the proximity switch is connected to the external control device through the signal output line conduit.
[0008] The water-cooled protection device for the proximity switch in the above-mentioned high-temperature environment, the rear of the paddle is connected to an L-shaped plate, the plate surface of the L-shaped plate is parallel to the outer wall of the water-cooled shell, the lower part of the straight plate of the L-shaped plate is vertically welded and connected to the middle position of the rear of the paddle, the connection between the transverse plate and the straight plate of the L-shaped plate is provided with an axial hole, the outside of the transmission shaft is rotatably connected to the axial hole, several hanging holes are arranged in sequence on the transverse plate of the L-shaped plate, and a heavy hammer is hung on the hanging hole, the rotational torque formed by the heavy hammer and the transverse plate of the L-shaped plate is opposite to the rotational torque formed by the paddle and the straight plate of the L-shaped plate, and the values match, and the straight plate of the L-shaped plate and the paddle are kept in a vertical position.
[0009] In the water-cooled protection device for the proximity switch in the high temperature environment, the upper part of the stop iron is a tubular sleeve structure, which is sleeved on the transmission shaft, and two nuts on the transmission shaft are located on both sides of the sleeve of the stop iron to clamp the stop iron.
[0010] The beneficial effects of the utility model are:
[0011] The water-cooling shell of the utility model is cooled by circulating water, and the proximity switch is placed in the water-cooling shell and can work normally; the two ends of the transmission shaft are respectively connected to the paddle and the stop iron, the detected object outside the water-cooling shell pushes the paddle to rotate, the paddle drives the transmission shaft to rotate, and the stop iron inside the water-cooling shell is also rotated by a certain angle under the drive of the transmission shaft, so that the stop iron is within the detection range of the proximity switch, and the proximity switch generates a signal output to complete the detection function.
[0012] The utility model has a simple structure and is easy to use, and can significantly reduce the ambient temperature around the proximity switch, so that the proximity switch can output normal signals, thereby achieving the purpose of using the proximity switch in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front cross-sectional view of the utility model;
[0014] Figure 2 yes Figure 1 The right side cross-sectional view of
[0015] Figure 3 yes Figure 1 Left view of
[0016] Figure 4 yes Figure 1 Top view of the .
[0017] The markings in the figure are as follows: water-cooling housing 1, upper cover 2, paddle 3, transmission shaft 4, stop iron 5, proximity switch 6, weight 7, transmission shaft hole 8, water inlet pipe 9, overflow pipe 10, signal output line guide tube 11, L-shaped plate 12, hanging hole 13. DETAILED DESCRIPTION
[0018] Figure 1 , 2 It is shown that the water-cooled shell 1 is a cube with a cavity in the middle. The side wall and bottom surface of the water-cooled shell 1 are double-layer structures. Circulating cooling water is poured into the double-layer structure. The upper cover 2 is placed on the upper end of the water-cooled shell 1 and is closed and connected to the water-cooled shell 1. There are water inlet pipes 9 and overflow pipes 10 on the opposite side walls of the water-cooled shell 1. The water inlet pipe 9 is below the side wall, and the overflow pipe 10 is above the side wall. The water inlet pipe 8 and the overflow pipe 10 are connected to the circulating water pipeline respectively. The upper cover 2 is used to isolate the heat source. The cooling water flows in from the water inlet pipe 9 below, fills the water-cooled shell 1, and then flows out from the overflow pipe 10 above, so as to achieve the purpose of cooling the inside of the water-cooled shell 1. A signal output line conduit 11 is also opened above the side wall of the water-cooled shell 1. The signal output line of the proximity switch 6 is connected to the external control device through the signal output line conduit 11.
[0019] Figure 1 , 2 4 shows that a transmission shaft hole 8 is provided on the upper part of the side wall of the water-cooling shell 1, and the transmission shaft 4 is installed in the transmission shaft hole 8. The transmission shaft 4 outside the water-cooling shell 1 is connected to a vertically placed paddle 3, and the plate surface of the paddle 3 is perpendicular to the outer wall of the water-cooling shell 1. The transmission shaft 4 inside the water-cooling shell 1 is connected to a vertical stop iron 5.
[0020] Figure 1 , 2 4 shows that the proximity switch 6 is fixed in the inner cavity of the water-cooled housing 1, the trigger end of the proximity switch 6 is opposite to the stopper 5, and the distance between the trigger end of the proximity switch 6 and the stopper 5 is greater than the trigger distance of the proximity switch 6, so that the stopper 5 cannot trigger the proximity switch 6 when there is no detection. During detection, the detected object pushes the paddle 3 to rotate, and the paddle 3 drives the transmission shaft 4 to rotate. Driven by the transmission shaft, the stopper 5 also rotates a certain angle, so that the stopper 5 is within the detection range of the proximity switch 6, and the proximity switch 6 generates a signal output to complete the detection function.
[0021] Figure 3It is shown that the rear of the paddle 3 is connected to an L-shaped plate 12, the plate surface of the L-shaped plate 12 is parallel to the outer wall of the water-cooling housing 1, the lower part of the straight plate of the L-shaped plate 12 is vertically welded and connected to the middle position of the rear of the paddle 3, there is an axial hole at the connection between the horizontal plate and the straight plate of the L-shaped plate 12, the outer part of the transmission shaft 4 is fixedly connected to the axial hole, and several hanging holes 13 are arranged in sequence on the horizontal plate of the L-shaped plate 12, and the heavy hammer 7 is hung on the hanging hole 13. In the case of no detection, the rotational torque formed by the heavy hammer 7 and the horizontal plate of the L-shaped plate 12 is opposite to the rotational torque formed by the paddle 3 and the straight plate of the L-shaped plate 12, and the values match, so that the straight plate of the L-shaped plate 12 and the paddle 3 remain in a vertical position when no detection object arrives, so the heavy hammer 7 of different weights should be selected according to the actual situation.
[0022] Figure 1 , 2 It is shown that the upper part of the stop iron 5 is a tubular sleeve structure, which is sleeved on the transmission shaft 4 and can rotate freely. The two nuts on the transmission shaft 4 are located on both sides of the sleeve of the stop iron 5, which are used to clamp the stop iron 5. The use of this structure of the stop iron 5 and the transmission shaft 4 is as follows: first, the angle of the stop iron 5 can be freely adjusted. The clamping nut on the transmission shaft 4 is loosened to adjust the stop iron 5 to a suitable angle so that the signal detection can ensure a sufficient detection distance without collision; second, it plays an accident fault tolerance role. When the paddle 3 is pushed backward excessively, the stop iron 5 will contact the proximity switch 6. If welding is used, it will become a rigid connection, which will damage the proximity switch 6 or the stop iron 5 or the transmission shaft 4 or the paddle 3. The nut clamping method is used to play the function of over-torque slippage, thereby protecting the above-mentioned mechanism.
[0023] The working process of the utility model is as follows:
[0024] When the detected object is not in place, the paddle 3 is in a vertical position due to the action of the weight 7, the stopper 5 is outside the sensing distance of the proximity switch 6, and the proximity switch 6 has no signal output;
[0025] When the moving object to be detected moves to the detection position, the object pushes the front plane of the paddle 3, causing the paddle 3 to rotate backward by an angle, and the paddle 3 drives the transmission shaft 4 to rotate, and the transmission shaft 4 drives the stop iron 5 to rotate by the same angle, and the stop iron 5 enters the sensing range of the proximity switch 6, and the proximity switch 6 generates a signal output.
[0026] By adjusting the position where the moving object collides with the paddle 3, the detection sensitivity can be adjusted. The higher the collision point, the more sensitive the detection is, and vice versa.
[0027] An embodiment of the present utility model is as follows:
[0028] The outer length of the water-cooling housing 1 is 280 mm, the width is 280 mm, the height is 280 mm, the inner cavity length is 200 mm, the width is 200 mm, the height is 200 mm, the water inlet pipe 9 and the overflow pipe 10 have a diameter of 16 mm and a length of 50 mm, and the diameter of the transmission shaft hole 8 is 16 mm;
[0029] The upper cover 2 has a length of 280 mm, a width of 280 mm, and a thickness of 10 mm;
[0030] The length of the plectrum 3 is 150 mm, the width is 210 mm, and the thickness is 5 mm. The length of the straight plate of the L-shaped plate 12 is 220 mm, the width is 210 mm, and the thickness is 5 mm.
[0031] The diameter of the transmission shaft 4 is 14mm and the length is 321mm:
[0032] The length of the stop iron 5 is 150 mm, the width is 40 mm, and the thickness is 3 mm;
[0033] The proximity switch 6 adopts an M30 NPN inductive proximity switch.
Claims
1. A water-cooling protection device for a proximity switch in a high temperature environment, characterized in that: It consists of a water-cooling shell (1), an upper cover (2), a paddle (3), a transmission shaft (4), an iron stop (5), and a proximity switch (6). The water-cooling shell (1) is a cube with a cavity in the middle. The side wall and the bottom surface of the water-cooling shell (1) are double-layer structures. The double-layer structure is filled with circulating cooling water. The upper cover (2) is placed on the upper end of the water-cooling shell (1) and is closed and connected to the water-cooling shell (1). The upper part of the side wall of the water-cooling shell (1) has a transmission shaft hole (8). The transmission shaft (4) is installed in the transmission shaft hole (8). The outside of the water-cooling shell (1) The transmission shaft (4) is connected to a vertically placed paddle (3), the plate surface of the paddle (3) is perpendicular to the outer wall of the water-cooling housing (1), the transmission shaft (4) inside the water-cooling housing (1) is connected to a vertical stop iron (5), the proximity switch (6) is fixed in the inner cavity of the water-cooling housing (1), the trigger end of the proximity switch (6) is opposite to the stop iron (5), the distance between the trigger end of the proximity switch (6) and the stop iron (5) is greater than the trigger distance of the proximity switch (6), and the signal output line of the proximity switch (6) is connected to an external control device.
2. The water-cooling protection device for proximity switches in high temperature environments according to claim 1, characterized in that: A water inlet pipe (9) and an overflow pipe (10) are respectively provided on opposite side walls of the water-cooling housing (1), the water inlet pipe (9) being located below the side wall and the overflow pipe (10) being located above the side wall, the water inlet pipe (9) and the overflow pipe (10) being respectively connected to a circulating water pipeline, and a signal output line conduit (11) is also provided above the side wall of the water-cooling housing (1), and a signal output line of the proximity switch (6) is connected to an external control device via the signal output line conduit (11).
3. The water-cooling protection device for proximity switches in high temperature environments according to claim 1, characterized in that: The rear of the paddle (3) is connected to an L-shaped plate (12), the plate surface of the L-shaped plate (12) is parallel to the outer wall of the water-cooling housing (1), the lower part of the straight plate of the L-shaped plate (12) is vertically welded and connected to the middle position of the rear of the paddle (3), the connection between the transverse plate and the straight plate of the L-shaped plate (12) is provided with an axial hole, the outer part of the transmission shaft (4) is fixedly connected to the axial hole, several hanging holes (13) are sequentially arranged on the transverse plate of the L-shaped plate (12), and a heavy hammer (7) is hung on the hanging hole (13), the rotational torque formed by the heavy hammer (7) and the transverse plate of the L-shaped plate (12) is opposite in direction to the rotational torque formed by the paddle (3) and the straight plate of the L-shaped plate (12), and the values are matched, and the straight plate of the L-shaped plate (12) and the paddle (3) are kept in a vertical position.
4. The water-cooling protection device for proximity switches in high temperature environments according to claim 1, characterized in that: The upper portion of the stop iron (5) is a tubular sleeve structure which is sleeved on the transmission shaft (4); two nuts on the transmission shaft (4) are located on both sides of the sleeve of the stop iron (5) to clamp the stop iron (5).