An inner flow inlet spindle end leakage prevention device

Abstract

This utility model relates to an anti-leakage device for an internally inlet spindle, comprising: a sealing device, a water receiving box, a return hole on a wall panel, an adjustable spray angle of the spray pipe, a rubber gasket for sealing between the bearing base plate and the wall panel, and a rotation drive device for the spray pipe. The beneficial effects of this utility model are: it can return water collected in the water receiving box that occasionally leaks from the gap between the spindle and the bearing to the return hole in the internally inlet grid; it can reduce the amount of flushing water washing onto the spindle or prevent the spindle from being washed by flushing water; the guide plate in the water receiving box can improve the water return efficiency, prevent impurities from clogging the return hole or causing backflow, prevent contaminants from entering the grid, and adjust the spray angle of the spray pipe according to the tilt angle fed back by the angle sensor, providing real-time feedback; a guide shroud is provided at the end of the spray pipe to further reduce the possibility of the spindle being washed by flushing water.

Description

Technical Field

[0001] This utility model belongs to the field of internal flow grid sealing technology, and in particular relates to an internal flow main shaft end anti-leakage device. Background Technology

[0002] In the existing technology, when the main shaft rotates, the high-pressure flushing water inside the inner inlet grille is prone to leak along the main shaft to the outside of the equipment. The two ends of the main shaft are damaged by the impact and corrosion of the high-pressure flushing water for a long time, and the service life is greatly reduced. At the same time, the high-pressure flushing water continuously emerges, drips or sprays from the connection between the main shaft and the external bearing, which has many adverse effects on the working environment around the inner inlet grille. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an internal flow-initiating spindle end anti-leakage device.

[0004] This internal flow-intake spindle end anti-leakage device has bearings at both ends of the spindle, the bearings are fixed to the bearing base plate, the bearing base plate is fixed to the wall panel, and a matching controller is provided, including:

[0005] Sealing devices are installed on the inner side of the bearings at both ends of the main shaft to block water dripping from the main shaft. Water collection boxes are installed on the wall panels at both ends of the main shaft below the bearings. Return holes are opened on the wall panels at the lower part of the water collection boxes to return the water collected in the water collection boxes that occasionally leaks from the gap between the main shaft and the bearings to the inner inlet grid.

[0006] Inside the internal inlet grille, a spray pipe is installed at a set height on the adjusting screw fixing plate. The spray angle of the spray pipe is adjustable. The main shaft is not within the spray range of the spray pipe to reduce the amount of rinsing water that washes onto the main shaft or to prevent the main shaft from being washed by the rinsing water.

[0007] A rubber gasket for sealing is provided between the bearing base plate and the wall plate;

[0008] An internal water baffle is installed in the long groove between the bearing base plate and the adjusting screw fixing plate.

[0009] As a preferred option, both the bearings and the spindle are made of corrosion-resistant materials to extend their service life.

[0010] Preferably, the system also includes a rotary drive for the spray pipe, which comprises a stepper motor and an angle sensor. The stepper motor is connected to the spray pipe via a flexible coupling and is equipped with a waterproof bearing to support the flexible coupling. The angle sensor is coaxially mounted with the rotation shaft of the spray pipe via the flexible coupling. The angle sensor is electrically connected to the controller via an IP68 waterproof signal line, and the stepper motor is also electrically connected to the controller, so as to realize the adjustment of the spray angle of the spray pipe based on the tilt angle fed back by the angle sensor and to provide real-time feedback.

[0011] As a preferred option, the angle between the spray pipe and the axis of the main shaft is 60° to 90°. When the angle between the spray pipe and the axis of the main shaft is greater than or equal to 60°, the impact force of the water flow on the main shaft is reduced by more than 70%.

[0012] As a preferred option, the ends of the spray pipes are equipped with guide shields to further reduce the possibility of the main shaft being washed by the flushing water.

[0013] As a preferred option, the sealing device is a labyrinth-type sealing rubber gasket with a spring. One side of the spring is fixedly connected to the bearing sidewall, and the other side of the spring is fixedly connected to the labyrinth-type sealing rubber gasket. The labyrinth-type sealing rubber gasket is located between the spring and the bearing base plate. The pre-tightening force is used to compensate for the sealing structure to prevent sealing failure caused by long-term compression deformation.

[0014] As a preferred option, the water receiving box is equipped with a guide plate with an inclination angle greater than 30° to improve water return efficiency. A one-way valve is installed at the return hole to prevent impurities from clogging or backflow. A filter screen is installed at the connection between the return hole and the inner inlet grid to prevent pollutants from entering the grid.

[0015] The beneficial effects of this utility model are:

[0016] Sealing devices are installed on the inner sides of the bearings at both ends of the main shaft to prevent water dripping from the main shaft. A return hole is provided on the wall panel at the lower part of the water receiving box to return any water collected in the box that occasionally leaks from the gap between the main shaft and the bearing to the inner inlet grid. The spray angle of the spray pipe is adjustable so that the main shaft is not within the spray range of the spray pipe, thereby reducing the amount of rinsing water washing onto the main shaft or preventing the main shaft from being washed by the rinsing water. A guide plate with an inclination angle greater than 30° is installed inside the water receiving box to improve water return efficiency. A one-way valve is installed at the return hole to prevent impurities from clogging or backflow. A filter screen is installed at the connection between the return hole and the inner inlet grid to prevent contaminants from entering the grid.

[0017] The spray pipe is equipped with a stepper motor and an angle sensor to adjust the spray angle of the spray pipe according to the tilt angle fed back by the angle sensor and provide real-time feedback; the spray pipe is at a certain angle to the axis of the main shaft, which reduces the impact force of the water flow on the main shaft by more than 70%; a guide shroud is installed at the end of the spray pipe to further reduce the possibility of the main shaft being washed by the flushing water.

[0018] The sealing device is a labyrinth-type sealing rubber gasket with a spring. The pre-tightening force is used to compensate for the sealing structure and prevent the sealing structure from failing due to long-term compression deformation.

[0019] Through the above design, this utility model almost completely avoids the adverse effects of high-pressure flushing water leakage on the working environment around the inner inlet grille. Attached Figure Description

[0020] Figure 1 A front sectional view of the internal inlet spindle sealing and leak prevention device;

[0021] Figure 2 This is a side view of the internal inlet spindle seal leak prevention device;

[0022] Figure 3 This is a circuit diagram of a rotary drive device.

[0023] Explanation of reference numerals in the attached drawings: 1. Main shaft; 2. Spray pipe; 3. Bearing base plate; 4. Wall plate; 5. Rubber pad; 6. Water receiving box; 7. Return hole; 8. Adjusting screw fixing plate; 9. Internal baffle plate; 10. Corrosion-resistant bearing; 11. Water-stop seal. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0025] As one example, such as Figure 1 and Figure 2 As shown, an internal flow-intake spindle end anti-leakage device is provided. The spindle 1, made of corrosion-resistant material, has corrosion-resistant bearings 10 at both ends. The bearings 10 are fixed to a bearing base plate 3, which is fixed to a wall plate 4. A matching controller is provided. The device includes: labyrinth-type sealing rubber gaskets with springs installed on the inner sides of the bearings 10 at both ends of the spindle 1 as sealing devices. The sealing devices are used to block water dripping from the spindle. One side of the spring is fixedly connected to the side wall of the bearing 10, and the other side of the spring is fixedly connected to the labyrinth-type sealing rubber gasket. The labyrinth-type sealing rubber gasket is located between the spring and the bearing base plate 3, and prevents water dripping through preload compensation. The sealing structure is prone to failure due to long-term compression deformation. Water collection boxes 6 are provided on the wall plates 4 at both ends of the main shaft 1 below the bearing 10. A return hole 7 is provided on the wall plate 4 at the lower part of the water collection box 6. The return hole is used to return the water collected in the water collection box that occasionally leaks from the gap between the main shaft and the bearing to the inner inlet grid. A guide plate with an inclination angle of 45° is provided in the water collection box 6 to improve the water return efficiency. A one-way valve is provided at the return hole 7 to prevent impurities from clogging or backflow. A filter screen is provided at the connection between the return hole 7 and the inner inlet grid to prevent pollutants from entering the grid.

[0026] Inside the internal flow grille, a spray pipe 2 is installed at a set height on the adjusting screw fixing plate 8. The spray angle of the spray pipe 2 is adjustable. The main shaft 1 is not within the spray range of the spray pipe 2 to reduce the amount of rinsing water that washes onto the main shaft or to prevent the main shaft from being washed by the rinsing water. Each end of the spray pipe 2 is equipped with a guide shield to further reduce the possibility of the main shaft being washed by the rinsing water. The system also includes a rotation drive device for the spray pipe 2, which includes a stepper motor and an angle sensor. The stepper motor is connected to the spray pipe 2 via a flexible coupling, and a waterproof bearing is provided to support the flexible coupling. Figure 3 As shown, the angle sensor is coaxially mounted with the rotating shaft of the spray pipe via a flexible coupling. The angle sensor is electrically connected to the controller via an IP68 waterproof signal cable, and the stepper motor is also electrically connected to the controller to achieve adjustment of the spray angle of the spray pipe based on the tilt angle feedback from the angle sensor and to provide real-time feedback. The angle between the axis of the spray pipe 2 and the axis of the main shaft 1 is 70°. When the angle between the axis of the spray pipe and the axis of the main shaft is greater than or equal to 60°, the impact force of the water flow on the main shaft is reduced by more than 70%.

[0027] A rubber gasket 5 for sealing is provided between the bearing base plate 3 and the wall plate 4;

[0028] An internal water baffle 9 is installed in the long groove between the bearing base plate 3 and the adjusting screw fixing plate 8.

[0029] When the internal inlet spindle end anti-leakage device is working: the spray angle of the spray pipe 2 is adjusted so that the spindle 1 is not within the spray range of the spray pipe 2, thereby reducing the amount of flushing water that washes onto the spindle or preventing the spindle from being washed by the flushing water; the controller, stepper motor and angle sensor work together to adjust the spray angle of the spray pipe according to the tilt angle fed back by the angle sensor and provide real-time feedback; the labyrinth-type sealing rubber gasket with spring first greatly reduces the dripping water at the connection between the spindle 1 and the bearing 10; the water receiving box 6 and the guide plate inside it collect the small amount of seeping water; the return hole 7, combined with the one-way valve and the filter screen, returns the water collected in the water receiving box and the water that occasionally leaks from the gap between the spindle and the bearing to the internal inlet grid, while preventing contaminants from entering the inside of the grid.

Claims

1. A leakage prevention device for an internal flow-in main shaft, wherein bearings (10) are provided at both ends of the main shaft (1), the bearings (10) are fixed on the bearing base plate (3), the bearing base plate (3) is fixed on the wall plate (4), and a matching controller is provided, characterized in that, include: A sealing device (11) is provided on the inner side of the bearing (10) at both ends of the main shaft (1); a water receiving box (6) is provided on the wall plate (4) at both ends of the main shaft (1) below the bearing (10), and a return hole (7) is provided on the wall plate (4) at the lower part of the water receiving box (6). Inside the internal inlet grille, a spray pipe (2) is provided at a set height on the adjusting screw fixing plate (8). The spray angle of the spray pipe (2) is adjustable, and the main shaft (1) is not within the spray range of the spray pipe (2). A rubber gasket (5) is provided between the bearing base plate (3) and the wall plate (4) for sealing purposes. An internal water baffle (9) is installed in the long groove between the bearing base plate (3) and the adjusting screw fixing plate (8).

2. The anti-leakage device at the inner inlet spindle end according to claim 1, characterized in that: Both the bearing (10) and the spindle (1) are made of corrosion-resistant material.

3. The anti-leakage device at the inner inlet spindle end according to claim 1, characterized in that: It also includes a rotary drive device for the spray pipe (2), which includes a stepper motor and an angle sensor; the stepper motor is connected to the spray pipe (2) through a flexible coupling, and a waterproof bearing is provided as a support for the flexible coupling; the angle sensor is coaxially installed with the rotating shaft of the spray pipe through the flexible coupling, and the angle sensor is electrically connected to the controller through an IP68 waterproof signal line, and the stepper motor is also electrically connected to the controller.

4. The anti-leakage device at the inner inlet spindle end according to claim 3, characterized in that: The angle between the spray pipe (2) and the axis of the main shaft (1) is 60° to 90°.

5. The anti-leakage device at the inner inlet spindle end according to claim 4, characterized in that: The ends of the spray pipes (2) are all equipped with guide shields.

6. The anti-leakage device at the inner inlet spindle end according to claim 1, characterized in that: The sealing device (11) is a labyrinth-type sealing rubber pad with a spring. One side of the spring is fixedly connected to the side wall of the bearing (10), and the other side of the spring is fixedly connected to the labyrinth-type sealing rubber pad. The labyrinth-type sealing rubber pad is located between the spring and the bearing base plate (3).

7. The anti-leakage device at the inner inlet spindle end according to claim 1, characterized in that: The water receiving box (6) is equipped with a guide plate with an inclination angle greater than 30°, and a one-way valve is installed at the return hole (7). A filter screen is installed at the connection between the return hole (7) and the inner inlet grid.

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