An efficient filtering type rotameter

Abstract

The present invention discloses an efficient filtering type rotameter, belonging to the field of flowmeters. In this solution, a warning type filter is added on the basis of the existing rotameter body to effectively protect the rotor. The fluid flows into the first buffer seat through the inlet pipe, passes through the filter screen, and enters the interior of the rotameter body through the fluid channel. This not only effectively slows down the impact of the fluid on the rotor when the valve is opened too quickly, but also can effectively intercept the impurities in the fluid to prevent them from affecting the up and down movement of the rotor. By utilizing the property that light travels in a straight line, the light passes through the light guide rod and the balance ball and shines on the light alarm to make it light up, so as to effectively assist the staff in judging whether the rotameter body is in a vertically installed state and facilitate adjustment. In addition, when too many impurities are intercepted by the filter screen and the lamp holder cannot descend normally, the non-illumination of the light alarm can also remind the staff to clean the impurities in time to ensure an efficient filtering effect.

Description

Technical Field

[0001] The present invention relates to the field of flow meters, and more specifically, to an efficient filtering type rotameter. Background Art

[0002] Measurement is the eye of industrial production. Flow measurement is one of the components of measurement science and technology, and it has a close relationship with the national economy and scientific research. Doing a good job in this work plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in the current era of energy crisis and increasingly high degree of industrial production automation, the status and role of flow meters in the national economy are more obvious. Flow meters are divided into differential pressure flow meters, rotameters, throttling flow meters, slit flow meters, volumetric flow meters, electromagnetic flow meters, ultrasonic flow meters, etc.

[0003] A rotameter measures the fluid flow based on the throttling principle. However, it changes the flow area of the fluid to keep the differential pressure constant above and below the rotor, so it is also called a variable flow area constant differential pressure flow meter, and also called a float flow meter. In a vertical tapered tube that expands from bottom to top, the gravity of the circular cross-section float is borne by the fluid dynamic force, and the float can freely rise and fall in the tapered tube. Moving up and down under the action of flow velocity and buoyancy, after balancing with the float weight, it is transmitted to the dial to indicate the flow rate through magnetic coupling. Generally, it is divided into glass and metal rotameters.

[0004] Relying on the advantages of small pressure loss and large detection range, rotameters have become a very commonly used flow measurement instrument in industrial control. It is not only convenient to use, but also has advantages such as strong compatibility. However, the current rotameters still have some defects. For example, when the valve is opened too quickly during operation, the rotor impacts the stopper rapidly upwards, causing the stopper to deform and jam the rotor. Moreover, most of the existing rotameters do not have a built-in filtering structure, and impurities in the fluid are likely to deposit in the tapered tube, affecting the up and down movement of the rotor. Summary of the Invention

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an efficient filtering type rotameter. In this solution, a warning type filter is added on the basis of the existing rotameter body to effectively protect the rotor. By allowing the fluid to flow into the first buffer seat through the inlet pipe and pass through the filter screen and enter the interior of the rotameter body through the fluid channel, it not only effectively slows down the impact of the fluid on the rotor when the valve is opened too quickly, but also effectively intercepts the impurities in the fluid to prevent them from affecting the up and down movement of the rotor, playing a dual protection role. By setting a balance ball and utilizing the property that light travels in a straight line, the light passes through the light guide rod and the balance ball and shines on the light alarm to make it glow, thereby effectively assisting the staff in judging whether the rotameter body is in a vertically installed state and facilitating adjustment. In addition, when too many impurities are intercepted by the filter screen and the lamp holder cannot descend normally, the non-glowing of the light alarm can also remind the staff to clean the impurities in time to ensure an efficient filtering effect.

[0007] Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] An efficient filtering type rotameter, comprising a rotameter body. The inlet end of the rotameter body is fixedly connected with a warning type filter. The warning type filter includes a pre-filtering cylinder communicated with the rotameter body. The inner wall of the pre-filtering cylinder is fixedly connected with a first buffer seat, and a filtering channel is opened in the middle of the first buffer seat. The inner wall of the first buffer seat located outside the filtering channel is provided with a fluid channel. The lower end inside the pre-filtering cylinder is fixedly connected with an inlet pipe, and the upper end of the inlet pipe extends into the filtering channel. A filter screen is fixedly connected between the upper end side wall of the inlet pipe and the inner wall of the filtering channel. The upper end of the filtering channel is connected with a closed cover. A slide plate is slidably connected to the inner wall of the filtering channel, and a connecting rod penetrating the closed cover is fixedly connected to the upper end side wall of the slide plate. The upper end of the connecting rod is fixedly connected with a lamp holder, and a plurality of equally spaced colored spotlights are installed on the side wall of the lamp holder. The side wall of the pre-filtering cylinder is fixedly connected with a plurality of equally spaced light alarms, and a plurality of light guide rods matching the light alarms are fixedly inlaid on the inner wall of the pre-filtering cylinder. A balance ball is rotatably connected inside the light alarm, and the center lines of the light guide rod and the balance ball and the rays of the colored spotlights are on the same straight line.

[0010] Furthermore, the balance ball includes a light-shielding sphere body. A light-passing hole is opened in the inner wall of the light-shielding sphere body. The light-shielding sphere body blocks the propagation of light, while the light-passing hole allows light to pass through and shine on the light alarm. A counterweight block is fixedly inlaid on the lower end inner wall of the light-shielding sphere body. The counterweight block makes the center of the balance ball drop to the lowest position, so that the light-passing hole is not affected by the inclination of the rotameter body and always remains in a horizontal position, thereby achieving the judgment of whether the rotameter body is in a vertical state.

[0011] Furthermore, the light-transmitting hole is flush with the light guide rod to ensure that they are on the same straight line to avoid affecting the linear propagation of light. Also, the inner diameter of the light-transmitting hole is equal to the diameter of the light guide rod, which is to improve the sensitivity of detecting whether the rotor flowmeter body is in a vertical state.

[0012] Furthermore, the light alarm includes a light-shielding shell. A light guide section is fixedly inlaid on the side wall of the light-shielding shell facing the light-transmitting hole. When light shines on the light guide section, the light guide section emits light, indicating that the rotor flowmeter body is in a vertical state at this time.

[0013] Furthermore, the inlet pipe includes a pipe body. Two pipe caps are rotatably connected to the outlet end of the pipe body. The fluid flows into the filtering channel from the inlet pipe, and the pipe caps can effectively reduce the impact force of the fluid.

[0014] Furthermore, the maximum rotation angle of the pipe cap is 90°. A reset rope is rotatably connected between the lower side wall of the pipe cap and the inner wall of the pipe body. The reset rope can automatically reset the two pipe caps by relying on elastic force to close the pipe body.

[0015] Furthermore, the closing cover is threadedly connected to the upper inner wall of the filtering channel. The threaded connection method facilitates the removal of the closing cover to clean the impurities inside the filtering channel. Also, the lower end face of the closing cover is concave in shape to match the buffer seat.

[0016] Furthermore, a second buffer seat is fixedly connected to the upper side wall of the sliding plate. The second buffer seat is made of an elastic material, and the buffer seat can effectively absorb the impact force of the fluid when the valve is opened too fast.

[0017] Furthermore, a limiting seat is fixedly connected to the lower side wall of the sliding plate. The lower end face of the limiting seat is arc-shaped. On the one hand, the limiting seat plays an effective anti-impact role to prevent the sliding plate from deforming. On the other hand, it is also to limit the too-fast opening of the pipe cap, thereby indirectly weakening the impact of the fluid.

[0018] Furthermore, the filter screen is spherical in shape and is made of polyurethane material. The polyurethane filter screen is durable and can withstand a certain impact.

[0019] Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] (1) In this solution, a warning filter is added on the basis of the existing rotameter body to effectively protect the rotor. The fluid flows into the first buffer seat through the inlet pipe, passes through the filter screen, and enters the interior of the rotameter body through the fluid channel. This not only effectively slows down the impact of the fluid on the rotor when the valve is opened too quickly, but also effectively intercepts impurities in the fluid to prevent them from affecting the up and down movement of the rotor, playing a dual protection role. By setting a balance ball and utilizing the property of light traveling in a straight line, light passes through the light guide rod and the balance ball and shines on the light alarm to make it glow, so as to effectively assist the staff in judging whether the rotameter body is in a vertically installed state and facilitate adjustment. In addition, when too many impurities are intercepted by the filter screen and cause the lamp holder to not be able to descend normally, the non-glowing of the light alarm can also remind the staff to clean the impurities in time to ensure an efficient filtering effect.

[0022] (2) The balance ball includes a light-shielding sphere. A light-passing hole is provided on the inner wall of the light-shielding sphere. The light-shielding sphere blocks the propagation of light, while the light-passing hole allows light to pass through and shine on the light alarm. A counterweight is fixedly inlaid on the lower inner wall of the light-shielding sphere. The counterweight makes the center of the balance ball drop to the lowest point, so that the light-passing hole is always in a horizontal position regardless of the inclination of the rotameter body, thereby achieving the judgment of whether the rotameter body is in a vertical state.

[0023] (3) The light-passing hole is flush with the light guide rod to ensure that they are on the same straight line to avoid affecting the straight-line propagation of light. And the inner diameter of the light-passing hole is equal to the diameter of the light guide rod. This is to improve the sensitivity of detecting whether the rotameter body is in a vertical state.

[0024] (4) The light alarm includes a light-shielding shell. A light guide section is fixedly inlaid on the side wall of the light-shielding shell facing the light-passing hole. When light shines on the light guide section, the light guide section glows, indicating that the rotameter body is in a vertical state at this time.

[0025] (5) The inlet pipe includes a pipe body. Two pipe caps are rotatably connected to the outlet end of the pipe body. The fluid flows from the inlet pipe into the filter channel, and the pipe caps can effectively slow down the impact force of the fluid.

[0026] (6) The maximum rotation angle of the pipe cap is 90°. A reset rope is rotatably connected between the lower side wall of the pipe cap and the inner wall of the pipe body. The reset rope can automatically reset the two pipe caps by relying on elastic force to close the pipe body.

[0027] (7) The closing cover is threadedly connected to the upper inner wall of the filter channel. The threaded connection method is convenient for disassembling the closing cover to clean the impurities inside the filter channel. And the lower end face of the closing cover is concave in shape to match the buffer seat.

[0028] (8) The upper side wall of the sliding plate is fixedly connected with a second buffer seat, and the second buffer seat is made of an elastic material. The buffer seat can effectively absorb the impact force of the fluid when the valve is opened too quickly.

[0029] (9) The lower side wall of the sliding plate is fixedly connected with a limiting seat, and the lower end surface of the limiting seat is arc-shaped. On the one hand, the limiting seat plays an effective anti-impact role to prevent the sliding plate from deforming. On the other hand, it is also to limit the too-fast opening of the pipe cover, thereby indirectly weakening the impact of the fluid.

[0030] (10) The filter net is spherical in shape, and the filter net is made of polyurethane material. The polyurethane filter net is durable and can withstand a certain impact. Brief Description of the Drawings

[0031] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 is a front view structural schematic diagram of the present invention;

[0033] Figure 3 is a front view structural schematic diagram of the warning type filter of the present invention;

[0034] Figure 4 is a front view structural schematic diagram of the balance ball of the present invention;

[0035] Figure 5 is a front view structural schematic diagram of the inlet pipe of the present invention;

[0036] Figure 6 is a structural schematic diagram of the warning type filter of the present invention during operation;

[0037] Figure 7 is a comparative structural schematic diagram of the present invention when placed vertically and obliquely;

[0038] Figure 8 is a structural schematic diagram of the present invention when filtering impurities.

[0039] Explanation of the reference numerals in the drawings:

[0040] 1 Rotameter body, 2 Pre-filter cartridge, 3 First buffer seat, 301 Filter channel, 302 Fluid channel, 4 Inlet pipe, 401 Pipe body, 402 Pipe cover, 403 Reset rope, 5 Filter net, 6 Sealing cover, 7 Sliding plate, 701 Second buffer seat, 702 Limiting seat, 8 Lamp holder, 9 Light alarm, 901 Light-shielding shell, 902 Light-guiding section, 10 Light-guiding rod, 11 Balance ball, 1101 Light-shielding sphere, 1102 Light-passing hole, 1103 Counterweight. Detailed Embodiments

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0044] Please refer to Figure 1-8 A highly efficient filtering type rotameter, including a rotameter body 1, please refer to Figure 1 、 2 、3. A warning filter is fixedly connected to the inlet end of the rotameter body 1. The warning filter includes a pre-filtering cylinder 2 communicated with the rotameter body 1. A first buffer seat 3 is fixedly connected to the inner wall of the pre-filtering cylinder 2, and a filtering channel 301 is opened in the middle of the first buffer seat 3. A fluid channel 302 is opened on the inner wall of the first buffer seat 3 located outside the filtering channel 301;

[0045] Please refer to Figure 3 、 5, 8. At the lower end inside the front filter cartridge 2, an inlet pipe 4 is fixedly connected, and the upper end of the inlet pipe 4 extends into the filter channel 301. The inlet pipe 4 includes a pipe body 401. At the outlet end of the pipe body 401, two pipe caps 402 are rotatably connected. Fluid flows into the filter channel 301 from the inlet pipe 4, and the pipe caps 402 can effectively reduce the impact force of the fluid. The maximum rotation angle of the pipe caps 402 is 90°. Between the lower side wall of the pipe caps 402 and the inner wall of the pipe body 401, a reset rope 403 is rotatably connected. The reset rope 403 can automatically reset the two pipe caps 402 by relying on elasticity to close the pipe body 401. Between the upper side wall of the inlet pipe 4 and the inner wall of the filter channel 301, a filter net 5 is fixedly connected. The filter net 5 is spherical in shape, and the filter net 5 is made of polyurethane material. The polyurethane filter net is durable and can withstand a certain impact. At the upper end of the filter channel 301, a closing cover 6 is connected. The closing cover 6 is threadedly connected to the upper inner wall of the filter channel 301. The threaded connection method is convenient for removing the closing cover 6 to clean the impurities inside the filter channel 301. And the lower end surface of the closing cover 6 is concave in shape to match the second buffer seat 701;

[0046] Please refer to Figure 3 , a sliding plate 7 is slidably connected to the inner wall of the filter channel 301. At the upper side wall of the sliding plate 7, a second buffer seat 701 is fixedly connected. And the second buffer seat 701 is made of an elastic material. The second buffer seat 701 can effectively absorb the impact force of the fluid when the valve is opened too fast. At the lower side wall of the sliding plate 7, a limiting seat 702 is fixedly connected. And the lower end surface of the limiting seat 702 is arc-shaped. On the one hand, the limiting seat 702 plays an effective anti-impact role to prevent the sliding plate 7 from deforming. On the other hand, it is also to limit the too-fast opening of the pipe caps 402, thereby indirectly weakening the impact of the fluid. At the upper side wall of the sliding plate 7, a connecting rod passing through the closing cover 6 is fixedly connected. At the upper end of the connecting rod, a lamp holder 8 is fixedly connected. And on the side wall of the lamp holder 8, a plurality of equally spaced color spotlights are installed (a well-known technology for those skilled in the art, and the specific model is selected according to actual needs);

[0047] Please refer to Figure 4 , a plurality of equally spaced light alarms 9 are fixedly connected to the side wall of the front filter cartridge 2. And a plurality of light guide rods 10 matching the light alarms 9 are fixedly inlaid on the inner wall of the front filter cartridge 2. The light alarm 9 includes a light-shielding shell 901. On the side wall of the light-shielding shell 901 facing the light-transmitting hole 1102, a light guide section 902 is fixedly inlaid. When light shines on the light guide section 902, the light guide section 902 emits light, indicating that the rotor flowmeter body 1 is in a vertical state at this time;

[0048] Please refer to Figure 4 , 7, inside the light alarm 9, there is a balance ball 11 rotatably connected. The balance ball 11 includes a light-shielding sphere 1101. There is a light-passing hole 1102 on the inner wall of the light-shielding sphere 1101. The light-shielding sphere 1101 blocks the propagation of light, while the light-passing hole 1102 allows light to pass through and shine on the light alarm 9. At the lower inner wall of the light-shielding sphere 1101, a counterweight 1103 is fixedly inlaid. The counterweight 1103 makes the center of the balance ball 11 drop to the lowest position, so that the light-passing hole 1102 is always in a horizontal position regardless of the inclination of the rotor flowmeter body 1. The light-passing hole 1102 is flush with the light guide rod 10 to ensure that they are on the same straight line to avoid affecting the linear propagation of light. And the inner diameter of the light-passing hole 1102 is equal to the diameter of the light guide rod 10. This is to improve the sensitivity of detecting whether the rotor flowmeter body 1 is in a vertical state, so as to judge whether the rotor flowmeter body 1 is in a vertical state. The midlines of the light guide rod 10 and the balance ball 11 are on the same straight line as the ray of the color spotlight.

[0049] The working principle of this device is as follows: When installing the rotor flowmeter body 1, the light emitted by the color spotlight on the lamp holder 8 passes through the light guide rod 10. If the rotor flowmeter body 1 is in a vertical state at this time, the light passes through the light-passing hole 1102 and shines on the light guide section 902 to make it emit light. If the rotor flowmeter body 1 is in an inclined state, the light cannot pass through the light-passing hole 1102, and at this time the light guide section 902 does not emit light. The staff adjusts the rotor flowmeter body 1 to be vertical during installation based on this. After opening the valve, the fluid enters the filtering channel 301 from the inlet pipe 4. The fluid flushes open the pipe cap 402 and then lifts the slide plate 7 upward. The fluid passes through the filter net 5 and enters the interior of the pre-filtering cylinder 2 and then passes through the fluid channel 302 and enters the interior of the rotor flowmeter body 1. When the fluid passes through the filter net 5, impurities are intercepted in the filtering channel 301. As the usage time prolongs, more and more impurities accumulate in the filtering channel 301. When the valve is closed, due to a large amount of impurities accumulating above the filter net 5, the slide plate 7 cannot drop to the lowest position, which causes the light emitted by the color spotlight on the lamp holder 8 to be unable to pass through the light guide rod 10, thus sending a reminder to the external staff to clean the impurities in time. When cleaning the impurities, just unscrew the closing cover 6 and take out the slide plate 7.

[0050] This solution effectively protects the rotor by adding a warning filter on the basis of the existing rotameter body 1. The fluid flows into the first buffer seat 3 through the inlet pipe 4 and passes through the filter screen 5 and enters the interior of the rotameter body 1 through the fluid channel 302, which not only effectively reduces the impact of the fluid on the rotor when the valve is opened too quickly, but also effectively intercepts the impurities in the fluid to prevent them from affecting the up and down movement of the rotor, playing a dual protection role. By setting the balance ball 11 and using the property that light travels in a straight line, the light passes through the light guide rod 10 and the balance ball 11 and irradiates on the light alarm 9 to make it shine, so as to effectively assist the staff in judging whether the rotameter body 1 is in a vertically installed state and is convenient for adjustment. In addition, when the impurities intercepted by the filter screen 5 are too many and cause the lamp holder 8 to not be able to descend normally, the non-illumination of the light alarm 9 can also remind the staff to clean the impurities in time to ensure an efficient filtering effect.

[0051] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. An efficient filtering type rotameter, comprising a rotameter body (1), characterized in that: The inlet end of the rotor flowmeter body (1) is fixedly connected with an early warning filter. The early warning filter includes a pre-filter cartridge (2) communicated with the rotor flowmeter body (1). The inner wall of the pre-filter cartridge (2) is fixedly connected with a first buffer seat (3), and a filter channel (301) is opened in the middle of the first buffer seat (3). A fluid channel (302) is opened in the inner wall of the first buffer seat (3) located outside the filter channel (301). The lower end inside the pre-filter cartridge (2) is fixedly connected with an inlet pipe (4), and the upper end of the inlet pipe (4) extends into the filter channel (301). A filter net (5) is fixedly connected between the upper end side wall of the inlet pipe (4) and the inner wall of the filter channel (301). The upper end of the filter channel (301) is connected with a sealing cover (6). A slide plate (7) is slidably connected to the inner wall of the filter channel (301), and a connecting rod penetrating through the sealing cover (6) is fixedly connected to the upper end side wall of the slide plate (7). A lamp holder (8) is fixedly connected to the upper end of the connecting rod, and a plurality of equally spaced color spotlights are installed on the side wall of the lamp holder (8). A plurality of equally spaced light alarms (9) are fixedly connected to the side wall of the pre-filter cartridge (2), and a plurality of light guide rods (10) matching the light alarms (9) are fixedly inlaid on the inner wall of the pre-filter cartridge (2). A balance ball (11) is rotatably connected inside the light alarm (9). The center lines of the light guide rod (10) and the balance ball (11) are on the same straight line as the rays of the color spotlights.

2. The high-efficiency filtering type rotameter according to claim 1, wherein: The balance ball (11) includes a light-shielding sphere (1101). A light-passing hole (1102) is opened in the inner wall of the light-shielding sphere (1101). A counterweight block (1103) is fixedly inlaid on the lower end inner wall of the light-shielding sphere (1101).

3. The high-efficiency filtering type rotameter according to claim 2, wherein: The light-passing hole (1102) is flush with the light guide rod (10), and the inner diameter of the light-passing hole (1102) is equal to the diameter of the light guide rod (10).

4. An efficient filtering type rotameter according to claim 2, characterized in that: The light alarm (9) includes a light-shielding shell (901). A light guide section (902) is fixedly inlaid on the side wall of the light-shielding shell (901) facing the light-passing hole (1102).

5. An efficient filtering type rotameter according to claim 1, characterized in that: The inlet pipe (4) includes a pipe body (401). Two pipe caps (402) are rotatably connected to the outlet end of the pipe body (401).

6. The high-efficiency filtering type rotameter according to claim 5, characterized in that: The maximum rotation angle of the pipe cap (402) is 90°, and a return rope (403) is rotatably connected between the lower end side wall of the pipe cap (402) and the inner wall of the pipe body (401).

7. An efficient filtering type rotameter according to claim 1, characterized in that: The sealing cover (6) is threadedly connected to the upper end inner wall of the filter channel (301), and the lower end surface of the sealing cover (6) is concave.

8. An efficient filtering type rotameter according to claim 1, characterized in that: A second buffer seat (701) is fixedly connected to the upper end side wall of the slide plate (7), and the second buffer seat (701) is made of an elastic material.

9. The high-efficiency filtering type rotameter according to claim 1, characterized in that: A limiting seat (702) is fixedly connected to the lower end side wall of the slide plate (7), and the lower end surface of the limiting seat (702) is arc-shaped.

10. An efficient filtering type rotameter according to claim 5, characterized in that: The filter net (5) is spherical, and the filter net (5) is made of polyurethane material.

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