Digital light guide liquid level meter
By using a combination of wire rope and wiper assembly in the digital light guide level meter, the mechanical movement obstruction caused by the influence of steam is solved, and the stability and reliability are achieved, and manual water cleaning is avoided demand.
Patent Information
- Application Number
- CN202421391950.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-18
AI Technical Summary
Traditional light guide level meters are susceptible to steam during use, resulting in obstruction of mechanical movement, poor stability and reliability, and staff need to manually clean up the accumulated water inside the shell.
A digital light-guiding level meter is designed, using a combination of wire rope and wiper assembly to scrape the water dew on the surface of the wire rope through the scraper to prevent water vapor from entering the inside of the shell, and to discharge moisture through the flow guide block and fixing box. Avoid obstruction of mechanical movement.
Effectively prevent water vapor from entering the liquid level gauge, improve the stability and reliability of the equipment, and avoid the need to manually clean up accumulated water.
Smart Images
Figure CN222528741U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a digital light-conducting liquid level meter, in particular to a digital light-conducting liquid level meter applied in the field of liquid level meters. Background Art
[0002] The height of the liquid medium in the container is called the liquid level. The instrument for measuring the liquid level is called a liquid level meter. The liquid level meter is a type of level instrument. The types of liquid level meters include tuning fork vibration type, magnetic levitation type, pressure type, ultrasonic, sonar wave, magnetic flap, radar, etc. When detecting the liquid level of a large liquid storage tank, a photoconductive liquid level meter is usually used, which has the characteristics of high display accuracy and strong anti-interference ability.
[0003] Traditional optical level gauges generally consist of multiple code disks and gear transmissions to form mechanical movements. Steam and other substances can enter the outer casing, causing mechanical movement to be obstructed. Therefore, the stability and reliability are poor, requiring staff to clean up the accumulated water inside the casing. Utility Model Content
[0004] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that when using an optical liquid level meter, steam can enter the shell, causing mechanical movement to be obstructed, resulting in poor stability and reliability, so that the staff needs to clean the accumulated water inside the shell.
[0005] In order to solve the above problems, the utility model provides a digital light-conducting liquid level meter, including a shell, the inner cavity of the shell is fixedly connected to a bearing seat, the right end of the bearing seat is rotatably penetrated by a rotating shaft, the left and right ends of the rotating shaft are rotatably connected to the left and right inner walls of the shell respectively, the left and right ends of the outer ring of the bearing seat are respectively fixedly sleeved with a code disk and a measuring wheel, the left end of the bearing seat is fixedly connected to two photoelectric switches, the code disk is located between the two photoelectric switches, the outer ring of the measuring wheel is wrapped with a wire rope, the inner cavity of the shell is also fixedly connected to a wire pressing wheel, the lower end of the shell is fixedly connected to a wiper assembly, and the wiper assembly A compression spring is provided at the lower end of the component, and the lower end of the steel wire rope passes through the pressure wheel, the outer shell, the wiper assembly and the compression spring in sequence and is fixedly connected with a float. The wiper assembly includes a fixed box, and the inner cavity of the fixed box is fixedly connected with two expansion blocks, and a wiping cotton is provided between the two expansion blocks. A limiting ring is inserted at the upper end of the upper expansion block, and a guide pipe and a fixing ring are fixedly passed through the lower end of the lower expansion block, the lower end of the fixing ring is fixedly connected with a scraper, and the lower end of the scraper is fixedly connected with a guide block, the lower left end of the fixed box is fixedly connected with a water outlet pipe, and a one-way valve is fixedly installed on the outer ring of the water outlet pipe.
[0006] In the above-mentioned digital optical level gauge, the dew on the surface of the wire rope can be scraped to effectively prevent water vapor from entering the inside of the shell, thereby effectively avoiding obstruction of mechanical movement and improving the stability of the equipment. There is no need for staff to manually clean the accumulated water inside the shell.
[0007] As a further improvement of the present application, the lower end of the steel wire rope passes through a limit ring, an expansion block, a wiping cotton, another expansion block, a fixed ring, a scraper and a guide block in sequence, and the inner annular surfaces of the wiping cotton and the scraper are in contact with the outer surface of the steel wire rope.
[0008] As a further improvement of the present application, an accommodating hole is provided on the inner bottom wall of the outer shell, and the limiting ring includes a circular ring one and a circular ring two that are fixed and connected to each other, the diameter of circular ring one is larger than the diameter of circular ring two, the outer ring surface of circular ring one is fixedly connected to the inner wall of the accommodating hole, and the outer ring surface of circular ring two is fixedly connected to the inner wall of the expansion block above.
[0009] As a further improvement of the present application, the outer ring surface of the fixing ring is fixedly connected to the inner wall of the expansion block below, and the expansion block is made of carbon fiber reinforced composite material.
[0010] As a further improvement and supplement to the present application, the lower end of the guide block is fixedly connected to two fixed plates, the ends of the two fixed plates away from each other are respectively fixedly connected to the left and right inner walls of the fixed box, the lower end of the guide pipe penetrates into the inner cavity of the guide block, and the longitudinal section of the guide block is an isosceles trapezoidal shape.
[0011] As another improvement of the present application, the upper end of the shell is fixedly connected with a fixing assembly, which includes a fixing block, a surface of the fixing block is provided with a T-slot, a T-block is arranged in the T-slot, and the lower end of the T-block is fixedly connected to the upper end of the shell.
[0012] As another improvement supplement to the present application, springs are fixedly connected to the left and right surfaces of the fixed block, and an insertion rod is provided at the ends of the two springs that are away from each other. The corresponding ends of the insertion rods pass through the spring, the fixed block and the T-block in sequence, and the ends of the two springs that are away from each other are fixedly connected to the insertion rod.
[0013] To sum up, in actual application, the position of the float changes with the rise and fall of the liquid level, so that the measuring wheel rotates, which in turn drives the rotating shaft and the code disk to rotate. The photoelectric switch uses the code disk to output two sets of pulse signals to detect the change of liquid level. In the process of monitoring the liquid level, water vapor is blocked by the fixed box, and part of the water vapor adheres to the surface of the wire rope and condenses into dew. The dew on the surface of the wire rope is scraped by the scraper, so that the dew flows into the fixed box along the guide block, and then the surface of the wire rope is wiped by the wiping cotton. The rise of water vapor will increase the overall temperature of the liquid level gauge, and the expansion block will expand due to heat, squeezing the wiping cotton, thereby squeezing the water inside the wiping cotton and discharging it along the guide pipe. Finally, the water in the fixed box is discharged from the outlet pipe, thereby effectively preventing steam from entering the liquid level gauge to cause mechanical movement obstruction and improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1This is a schematic diagram of the structure of the first implementation method of this application;
[0015] Figure 2 This is a structural cross-sectional view of the first embodiment of the present application;
[0016] Figure 3 This is a schematic diagram of the internal structure of the housing according to the first embodiment of the present application;
[0017] Figure 4 This is a schematic diagram of the internal structure of the accommodating box according to the first embodiment of the present application;
[0018] Figure 5 This is a cross-sectional view of the accommodating box structure of the first embodiment of the present application;
[0019] Figure 6 This is a schematic diagram of the expansion block structure of the first embodiment of the present application;
[0020] Figure 7 This is a schematic diagram of the guide block structure of the first embodiment of the present application;
[0021] Figure 8 This is a structural schematic diagram of the second implementation mode of the present application;
[0022] Fig. 9 This is a schematic diagram of the fixing component structure of the second embodiment of the present application.
[0023] Description of the numbers in the figure:
[0024] 1 housing, 2 bearing seat, 3 rotating shaft, 4 encoder, 5 measuring wheel, 6 photoelectric switch, 7 wire rope, 8 pressing wheel, 9 compression spring, 10 float, 11 fixing box, 12 expansion block, 13 wiping cotton, 14 guide tube, 15 fixing ring, 16 scraper, 17 guide block, 18 limiting ring, 19 fixing block, 20 T-block, 21 spring, 22 plug rod, 23 outlet pipe. DETAILED DESCRIPTION
[0025] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.
[0026] The first implementation method:
[0027] Figure 1 , Figure 2 and Figure 3It shows: a digital optical level gauge, comprising a shell 1, an inner cavity of the shell 1 is fixedly connected to a bearing seat 2, the right end of the bearing seat 2 is rotatably penetrated by a rotating shaft 3, the left and right ends of the rotating shaft 3 are rotatably connected to the left and right inner walls of the shell 1 respectively, the left and right ends of the outer ring of the bearing seat 2 are respectively fixedly sleeved with a code disk 4 and a measuring wheel 5, the left end of the bearing seat 2 is fixedly connected to two photoelectric switches 6, the code disk 4 is located between the two photoelectric switches 6, the two photoelectric switches 6 output two groups of signals to ensure that the data is true and valid, the outer ring of the measuring wheel 5 is wrapped with a wire rope 7, the inner cavity of the shell 1 is also fixedly connected to a wire pressing wheel 8, the lower end of the shell 1 is fixedly connected to a wiper assembly, the lower end of the wiper assembly is provided with a compression spring 9, the lower end of the wire rope 7 passes through the wire pressing wheel 8, the shell 1, the wiper assembly and the compression spring 9 in sequence and is fixedly connected to a float 10.
[0028] Figure 4 , Figure 5 , Figure 6 and Figure 7 It is shown that the wiper assembly includes a fixing box 11, the inner cavity of the fixing box 11 is fixedly connected with two expansion blocks 12, a wiping cotton 13 is arranged between the two expansion blocks 12, a limiting ring 18 is inserted at the upper end of the upper expansion block 12, and a guide tube 14 and a fixing ring 15 are fixedly penetrated at the lower end of the lower expansion block 12. The limiting ring 18 and the fixing ring 15 can limit and fix the two expansion blocks 12, so as to effectively prevent the expansion blocks 12 from expanding inwards and squeezing the steel wire rope 7. The lower end of the fixed ring 15 is fixedly connected with a scraper 16, which can scrape the dew on the surface of the wire rope 7. The lower end of the scraper 16 is fixedly connected with a guide block 17, and the scraped dew can flow into the bottom of the fixed box 11 along the guide block 17. The lower left end of the fixed box 11 is fixedly connected with a water outlet pipe 23, and the outer ring of the water outlet pipe 23 is fixedly installed with a one-way valve. The lower end of the wire rope 7 passes through the limit ring 18, an expansion block 12, a wiping cotton 13, and another The expansion block 12, the fixing ring 15, the scraper 16 and the guide block 17, the inner ring surface of the wiping cotton 13 and the scraper 16 fits with the outer surface of the wire rope 7, the wiping cotton 13 can absorb the remaining dew on the surface of the wire rope 7 to reduce the moisture on the surface of the wire rope 7, the inner bottom wall of the shell 1 is provided with a receiving hole, the limiting ring 18 includes a fixed and connected circular ring 1 and a circular ring 2, the diameter of the circular ring 1 is larger than the diameter of the circular ring 2, the outer ring surface of the circular ring 1 is fixedly connected to the inner wall of the receiving hole The outer ring surface of the second circular ring is fixedly connected to the inner wall of the expansion block 12 above, the outer ring surface of the fixing ring 15 is fixedly connected to the inner wall of the expansion block 12 below, the expansion block 12 is made of carbon fiber reinforced composite material, the lower end of the guide block 17 is fixedly connected to two fixing plates, the ends of the two fixing plates away from each other are respectively fixedly connected to the left and right inner walls of the fixing box 11, the lower end of the guide pipe 14 passes through the inner cavity of the guide block 17, and the longitudinal section of the guide block 17 is an isosceles trapezoidal shape.
[0029] When in use, the position of the float 10 changes with the rise and fall of the liquid level, so that the measuring wheel 5 rotates, which in turn drives the rotating shaft 3 and the code disk 4 to rotate. The code disk 4 is used to output two sets of pulse signals through the photoelectric switch 6 to detect the change of the liquid level. In the process of monitoring the liquid level, the water vapor is blocked by the fixed box 11, and part of the water vapor adheres to the surface of the wire rope 7 and condenses into dew. The scraper 16 scrapes the dew on the surface of the wire rope 7, so that the dew flows into the fixed box 11 along the guide block 17, and then the surface of the wire rope 7 is wiped by the wiping cotton 13. The rise of water vapor will increase the overall temperature of the liquid level gauge, so that the expansion block 12 expands due to heat and squeezes the wiping cotton 13, thereby squeezing the water inside the wiping cotton 13 and discharging it along the guide pipe 14. Finally, the water in the fixed box 11 is discharged from the outlet pipe 23, thereby effectively preventing steam from entering the liquid level gauge to cause mechanical movement obstruction, thereby improving the stability of the equipment.
[0030] The second implementation method:
[0031] This embodiment adds a fixing component on the basis of the first embodiment, and the rest of the parts are consistent with the first embodiment.
[0032] Figure 8 and Fig. 9 It is shown that: a fixing assembly is fixedly connected to the upper end of the shell 1, and the fixing assembly includes a fixing block 19, a T-shaped groove is bored on the surface of the fixing block 19, a T-shaped block 20 is arranged in the T-shaped groove, and the lower end of the T-shaped block 20 is fixedly connected to the upper end of the shell 1, and springs 21 are fixedly connected to the left and right surfaces of the fixing block 19, and the ends of the two springs 21 that are away from each other are provided with an insertion rod 22, and the corresponding ends of the insertion rod 22 penetrate the spring 21, the fixing block 19 and the T-shaped block 20 in sequence, and the ends of the two springs 21 that are away from each other are fixedly connected to the insertion rod 22.
[0033] When in use, fix the fixing block 19 inside the storage tank, pull the insertion rod 22 outward, extend the spring 21 outward, drive the insertion rod 22 to separate from the fixing block 19, and then insert the T-block 20 into the fixing block 19, loosen the spring 21, and make the insertion rod 22 pass through the fixing block 19 and the T-block 20, thereby fixing the housing 1, making it easy to disassemble and assemble the liquid level meter, and facilitating the maintenance of the liquid level meter in the later stage.
[0034] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.
Claims
1. A digital optical level meter, comprising a housing (1), characterized in that: The inner cavity of the housing (1) is fixedly connected to a bearing seat (2), the right end of the bearing seat (2) is rotatably penetrated by a rotating shaft (3), the left and right ends of the rotating shaft (3) are respectively rotatably connected to the left and right inner walls of the housing (1), the left and right ends of the outer ring of the bearing seat (2) are respectively fixedly sleeved with a code disk (4) and a measuring wheel (5), the left end of the bearing seat (2) is fixedly connected to two photoelectric switches (6), the code disk (4) is located between the two photoelectric switches (6), the outer ring of the measuring wheel (5) is wound with a steel wire rope (7), the inner cavity of the housing (1) is also fixedly connected to a wire pressing wheel (8), the lower end of the housing (1) is fixedly connected to a wiper assembly, the lower end of the wiper assembly is provided with a compression spring (9), the lower end of the steel wire rope (7) passes through the wire pressing wheel (8), the housing (1), the wiper assembly and the compression spring (9) in sequence and is fixedly connected to a float (10); The wiper assembly comprises a fixed box (11), the inner cavity of the fixed box (11) is fixedly connected to two expansion blocks (12), a wiping cotton (13) is arranged between the two expansion blocks (12), a limiting ring (18) is inserted into the upper end of the upper expansion block (12), a guide tube (14) and a fixed ring (15) are fixedly passed through the lower end of the lower expansion block (12), a scraper (16) is fixedly connected to the lower end of the fixed ring (15), and a guide block (17) is fixedly connected to the lower end of the scraper (16), and a water outlet pipe (23) is fixedly connected to the lower left end of the fixed box (11), and a one-way valve is fixedly installed on the outer ring of the water outlet pipe (23).
2. The digital optical level meter according to claim 1, characterized in that: The lower end of the steel wire rope (7) passes through a limit ring (18), an expansion block (12), a wiping cotton (13), another expansion block (12), a fixing ring (15), a scraper (16) and a guide block (17) in sequence, and the inner annular surfaces of the wiping cotton (13) and the scraper (16) are in contact with the outer surface of the steel wire rope (7).
3. The digital optical liquid level meter according to claim 2, characterized in that: The inner bottom wall of the housing (1) is provided with a receiving hole, and the limiting ring (18) comprises a first circular ring and a second circular ring which are fixed and communicated with each other, the diameter of the first circular ring is larger than the diameter of the second circular ring, the outer circular surface of the first circular ring is fixedly connected to the inner wall of the receiving hole, and the outer circular surface of the second circular ring is fixedly connected to the inner wall of the expansion block (12) above.
4. The digital optical level meter according to claim 3, characterized in that: The outer ring surface of the fixing ring (15) is fixedly connected to the inner wall of the expansion block (12) below, and the expansion block (12) is made of carbon fiber reinforced composite material.
5. The digital optical liquid level meter according to claim 1, characterized in that: The lower end of the guide block (17) is fixedly connected to two fixing plates, and the ends of the two fixing plates that are separated from each other are fixedly connected to the left and right inner walls of the fixing box (11) respectively. The lower end of the guide tube (14) passes through the inner cavity of the guide block (17), and the longitudinal section of the guide block (17) is in the shape of an isosceles trapezoid.
6. The digital optical liquid level meter according to claim 1, characterized in that: The upper end of the housing (1) is fixedly connected to a fixing assembly, the fixing assembly comprising a fixing block (19), a surface of the fixing block (19) being provided with a T-shaped groove, a T-shaped block (20) being arranged in the T-shaped groove, and the lower end of the T-shaped block (20) being fixedly connected to the upper end of the housing (1).
7. The digital optical liquid level meter according to claim 6, characterized in that: The left and right surfaces of the fixed block (19) are both fixedly connected to springs (21); the ends of the two springs (21) that are away from each other are each provided with an insertion rod (22); the corresponding ends of the insertion rod (22) penetrate the spring (21), the fixed block (19) and the T-shaped block (20) in sequence; the ends of the two springs (21) that are away from each other are both fixedly connected to the insertion rod (22).