Pipeline anti-blocking device and magnetic flap liquid level meter adopting same

Abstract

The utility model relates to the technical field of liquid level measuring equipment, in particular to a pipeline anti-blocking device and a magnetic flap liquid level meter adopting the same. Comprising a connecting pipe and a power mechanism, an anti-blocking mechanism is arranged in the connecting pipe and comprises a screw, a first sleeve, a second sleeve and turbine blades, the screw and the connecting pipe are coaxially arranged, the first sleeve is arranged on the screw in a sleeving mode and is in threaded connection with the screw, a limiting mechanism is used for limiting rotation of the first sleeve, and the second sleeve is rotationally arranged on the first sleeve in a sleeving mode; the turbine blades are evenly arranged on the outer side wall of the second sleeve in the circumferential direction, gaps exist between the ends, away from the second sleeve, of the turbine blades and the inner side wall of the connecting pipe, and the power mechanism drives the screw to rotate. The turbine blades rotate to play a pressurizing role and reduce the probability that impurities adhere to the connecting pipe, the screw rotates to enable the first sleeve to move in the axial direction of the connecting pipe, and the turbine blades rotate to move in the axial direction of the connecting pipe to scrape dirt on the inner side wall of the connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level measuring equipment, in particular to a pipeline anti-blocking device and a magnetic flap liquid level gauge using the device. Background Art

[0002] The magnetic flap level gauge is a product developed and produced based on similar products at home and abroad and in accordance with the magnetic level gauge standard HG / T21584-95 promulgated by the former Ministry of Chemical Industry. This instrument is mainly used for medium level detection in various towers, tanks, tanks, spherical containers and boilers. It can directly observe the liquid level height of the medium in various containers.

[0003] The existing magnetic flap level gauge needs to be connected to external equipment through a connecting pipe. The medium in the external equipment enters the magnetic flap level gauge through the connecting pipe. When there are large particulate impurities in the liquid medium, they will enter the magnetic flap level gauge through the connecting pipe. As the magnetic flap level gauge is used for a long time, the impurities will accumulate in the connecting pipe and adhere to its inner wall, causing blockage, which will cause the magnetic flap level gauge to fail to work normally. Summary of the Invention

[0004] In order to solve the problem that the connecting pipe of the existing magnetic flap liquid level gauge is prone to clogging after long-term use, the utility model proposes a pipeline anti-clogging device and a magnetic flap liquid level gauge using the device. The turbine blades rotate to increase pressure and reduce the probability of impurities adhering to the connecting pipe. The screw rotates to make the first sleeve move along the axial direction of the connecting pipe, thereby prompting the turbine blades to rotate and move along the axial direction of the connecting pipe to scrape off dirt on the inner wall of the connecting pipe and avoid clogging of the connecting pipe.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A pipeline anti-blocking device includes a connecting pipe and a power mechanism. The connecting pipe is provided with an anti-blocking mechanism, which includes a screw, a first sleeve, a second sleeve, and turbine blades. The screw is coaxially arranged with the connecting pipe, the first sleeve is sleeved on the screw and threadedly connected to the screw, and the connecting pipe is further provided with a limiting mechanism for limiting the rotation of the first sleeve.

[0007] The second sleeve is rotatably sleeved on the first sleeve, and the turbine blades are evenly arranged on the outer wall of the second sleeve in the circumferential direction. A gap is formed between the end of the turbine blade away from the second sleeve and the inner wall of the connecting pipe. A certain gap is formed between the outer end of the turbine blade and the inner wall of the connecting pipe to prevent the turbine blade from being obstructed during rotation. However, the gap is small enough to ensure that the turbine blade can scrape off dirt on the inner wall of the connecting pipe when there is a lot of dirt.

[0008] The power mechanism drives the screw to rotate. When the screw rotates, the first sleeve moves along the axial direction of the connecting pipe.

[0009] Furthermore, the power mechanism includes a motor, a rotating shaft, a first bevel gear and a second bevel gear. The motor is fixedly mounted on the outer wall of the connecting tube, the output shaft of the motor extends into the connecting tube and is fixedly connected to the rotating shaft, the end of the rotating shaft away from the motor is fixedly connected to the first bevel gear, and the second bevel gear is fixed at the end of the screw and is transmission-connected to the first bevel gear.

[0010] Furthermore, a bearing is provided at the connection between the output shaft of the motor and the connecting pipe.

[0011] Furthermore, a support plate is fixed in the connecting pipe, and the screw is rotatably connected to the support plate.

[0012] Furthermore, the limiting mechanism includes a chute, a slider, and a limiting rod. The chute is formed on the inner side wall of the connecting tube, the slider is slidably disposed within the chute, and one end of the limiting rod is fixedly connected to the first sleeve and the other end is fixedly connected to the slider. When the first sleeve moves axially, the slider moves synchronously within the chute.

[0013] Furthermore, both ends of the first sleeve are provided with a limit plate, the ends of the limit plate extend out of the first sleeve, and the second sleeve is located between the two limit plates. The two ends of the second sleeve contact the adjacent ends of the two limit plates.

[0014] Furthermore, the end of the limiting rod is fixedly connected to the limiting plate.

[0015] Through the above technical solution, the beneficial effects of the utility model are as follows: when the liquid in the utility model flows into the connecting pipe, it will impact the turbine blades on the outside of the second sleeve. The component force generated by the liquid impacting the turbine blades along the tangent of the connecting pipe causes the turbine blades to rotate, which plays a pressurizing role and reduces the probability of impurities adhering to the connecting pipe. At the same time, after the magnetic flap level gauge has been used for a period of time, a layer of dirt will inevitably form on the inner wall of the connecting pipe. The power mechanism drives the screw to rotate, causing the first sleeve to move along the axial direction of the connecting pipe, thereby prompting the turbine blades to rotate and move along the axial direction of the connecting pipe to scrape off the dirt on the inner wall of the connecting pipe and avoid blockage of the connecting pipe.

[0016] A magnetic flap level gauge is also provided, comprising a lower drainage pipe connected to a connecting pipe and a pipe anti-blocking device. Compared to existing magnetic flap level gauges, this device reduces the probability of scaling in the connecting pipe and increases the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a pipeline anti-blocking device of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a cutaway portion of a connecting pipe of a pipeline anti-blocking device according to the present invention;

[0019] Figure 3 This is a side view of a pipeline anti-blocking device according to the utility model;

[0020] Figure 4 This is a structural diagram of a first sleeve and a second sleeve of a pipeline anti-blocking device according to the utility model;

[0021] Figure 5 This is a schematic structural diagram of a power mechanism of a pipeline anti-blocking device according to the present invention;

[0022] Figure 6 The figure is a schematic diagram of the connection structure between the lower drainage pipe and the connecting pipe of the magnetic flap liquid level gauge of the present invention.

[0023] The numbers in the accompanying drawings are: 1 for the connecting pipe, 2 for the screw, 3 for the first sleeve, 4 for the second sleeve, 5 for the turbine blade, 6 for the motor, 7 for the rotating shaft, 8 for the first bevel gear, 9 for the second bevel gear, 10 for the bearing, 11 for the support plate, 12 for the slide, 13 for the limit rod, 14 for the limit plate, 15 for the lower drainage pipe, 16 for the magnetic flap level gauge, and 17 for the flange. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1 to 5 As shown, this embodiment provides a pipeline anti-blocking device, including a connecting pipe 1 and a power mechanism. The connecting pipe 1 is provided with an anti-blocking mechanism, and the anti-blocking mechanism includes a screw 2, a first sleeve 3, a second sleeve 4 and a turbine blade 5. The screw 2 is coaxially arranged with the connecting pipe 1, and the first sleeve 3 is sleeved on the screw 2 and threadedly connected to the screw 2. A limiting mechanism is also provided in the connecting pipe 1, and the limiting mechanism is used to limit the rotation of the first sleeve 3.

[0027] Specifically, the limiting mechanism includes a chute 12, a slider, and a limiting rod 13. The chute 12 is provided on the inner sidewall of the connecting tube 1, and the slider slides within the chute 12. One end of the limiting rod 13 is fixedly connected to the first sleeve 3, and the other end is fixedly connected to the slider. Limiting plates 14 are provided at both ends of the first sleeve 3. The ends of the limiting plates 14 extend outside the first sleeve 3 and are in the shape of circular rings. The second sleeve 4 is located between the two limiting plates 14. The ends of the limiting rod 13 are fixedly connected to the limiting plates 14.

[0028] The second sleeve 4 is rotatably mounted on the first sleeve 3. The turbine blades 5 are evenly arranged circumferentially on the outer wall of the second sleeve 4. A gap exists between the ends of the turbine blades 5 away from the second sleeve 4 and the inner wall of the connecting pipe 1. A certain gap exists between the outer ends of the turbine blades 5 and the inner wall of the connecting pipe 1 to prevent the turbine blades 5 from being obstructed during rotation. At the same time, the small gap allows the turbine blades 5 to scrape off scale on the inner wall of the connecting pipe 1 when it reaches a certain thickness, preventing blockage of the connecting pipe 1.

[0029] The power mechanism drives the screw 2 to rotate to realize the axial movement of the first sleeve 3 along the connecting pipe; specifically, refer to Figure 5 The power mechanism includes a motor 6, a rotating shaft 7, a first bevel gear 8 and a second bevel gear 9. The motor 6 is fixedly mounted on the outer wall of the connecting tube 1. The output shaft of the motor 6 extends into the connecting tube 1 and is fixedly connected to the rotating shaft 7. The end of the rotating shaft 7 away from the motor 6 is fixedly connected to the first bevel gear 8. The second bevel gear 9 is fixed at the end of the screw 2 and is transmission-connected to the first bevel gear 8.

[0030] In this embodiment, a bearing 10 is provided at the connection between the output shaft of the motor 6 and the connecting pipe 1. The left and right movement of the turbine blade 5 along the axial direction of the connecting pipe 1 is controlled by the forward and reverse rotation of the motor 6.

[0031] A support plate 11 is fixed in the connecting pipe 1 , and the screw rod 2 is rotatably connected to the support plate 11 , so as to support and position the screw rod 2 .

[0032] During use, external liquid first flows into the connecting pipe 1, impacting the turbine blades 5 outside the second sleeve 4, causing the turbine blades 5 to rotate, increasing the water pressure. At the same time, after the magnetic flap level gauge 16 has been used for a period of time, a layer of dirt will inevitably form on the inner wall of the connecting pipe 1. At this time, the motor 6 is started, and the rotating shaft 7 connected to the output end of the motor 6 drives the first bevel gear 8 to rotate. The second bevel gear 9 engaged with the first bevel gear 8 drives the screw to rotate, causing the first sleeve 3 to move axially along the connecting pipe 1 (the first sleeve 3 will not rotate and is restricted by the limit mechanism), thereby prompting the turbine blades 5 to rotate along the axial direction of the connecting pipe 1 to scrape off the dirt on the inner wall of the connecting pipe 1 and avoid blockage of the connecting pipe 1. The forward and reverse rotation of the screw 2 driven by the motor 6 controls the back and forth movement of the turbine blades 5 to improve the dirt scraping effect.

[0033] Example 2

[0034] like Figure 6As shown, this embodiment provides a magnetic flap level gauge 16, comprising a lower drainage pipe 15 and a pipe anti-blocking device. The lower drainage pipe 15 is connected to the connecting pipe 1. The lower drainage pipe 15 and the connecting pipe 1 are fixedly connected via a flange 17. During use, the magnetic flap level gauge 16, coupled with the connecting pipe 1, is connected to a boiler device where the liquid level needs to be measured. After a period of use, the inner wall of the connecting pipe 1 will scale. In this case, the descaling process described in Example 1 can be followed to ensure that the magnetic flap level gauge 16 can be reused.

[0035] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A pipeline anti-blocking device, comprising a connecting pipe (1) and a power mechanism, characterized in that: An anti-blocking mechanism is provided in the connecting pipe (1), and the anti-blocking mechanism includes a screw (2), a first sleeve (3), a second sleeve (4) and a turbine blade (5); the screw (2) is rotatably arranged in the connecting pipe (1) and is coaxially arranged with the connecting pipe (1); the first sleeve (3) is sleeved on the screw (2) and is threadedly connected to the screw (2); a limiting mechanism is also provided in the connecting pipe (1), and the limiting mechanism is used to limit the rotation of the first sleeve (3); The second sleeve (4) is rotatably sleeved on the first sleeve (3), the turbine blades (5) are evenly arranged on the outer wall of the second sleeve (4) in the circumferential direction, and a gap exists between the end of the turbine blades (5) away from the second sleeve (4) and the inner wall of the connecting pipe (1); The power mechanism drives the screw (2) to rotate.

2. A pipeline anti-blocking device according to claim 1, characterized in that: The power mechanism comprises a motor (6), a rotating shaft (7), a first bevel gear (8) and a second bevel gear (9); the motor (6) is fixedly mounted on the outer wall of the connecting tube (1); the output shaft of the motor (6) extends into the connecting tube (1) and is fixedly connected to the rotating shaft (7); the end of the rotating shaft (7) away from the motor (6) is fixedly connected to the first bevel gear (8); and the second bevel gear (9) is fixed to the end of the screw (2) and is in transmission connection with the first bevel gear (8).

3. A pipeline anti-blocking device according to claim 2, characterized in that: A bearing (10) is provided at the connection between the output shaft of the motor (6) and the connecting pipe (1).

4. A pipeline anti-blocking device according to claim 1, characterized in that: A support plate (11) is fixed inside the connecting pipe (1), and the screw rod (2) is rotatably connected to the support plate (11).

5. The pipeline anti-blocking device according to claim 1, characterized in that: The limiting mechanism comprises a slide groove (12), a slider and a limiting rod (13); the slide groove (12) is provided on the inner side wall of the connecting tube (1); the slider is slidably arranged in the slide groove (12); one end of the limiting rod (13) is fixedly connected to the first sleeve (3) and the other end is fixedly connected to the slider.

6. A pipeline anti-blocking device according to claim 5, characterized in that: Both ends of the first sleeve (3) are provided with a limiting plate (14), the ends of the limiting plates (14) extend out of the outside of the first sleeve (3), and the second sleeve (4) is located between the two limiting plates (14).

7. A pipeline anti-blocking device according to claim 6, characterized in that: The end of the limiting rod (13) is fixedly connected to the limiting plate (14).

8. A magnetic flap level gauge, comprising a lower drainage pipe (15), characterized in that: It also includes a pipeline anti-blocking device according to any one of claims 1 to 7, wherein the lower drainage pipe (15) is connected to the connecting pipe (1).

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