A self-sensing water pump sealing assembly

Abstract

The invention discloses a self-sensing water pump sealing component, belonging to the technical field of water pump sealing components, wherein the outer surface of the pump body is fixedly connected with a motor, the output shaft end of the motor is fixedly connected with a pump shaft, and the outer surface of the pump shaft is fixedly connected with an impeller; the sealing member comprises a graphite sealing ring, a hard sealing ring and a flexible sealing ring, and the invention can transport the gas inside the piston cylinder to the air bag through the connecting pipe through the mutual cooperation of a piston rod, a piston plate, an air bag, a positioning rod, a piston cylinder and a connecting pipe, so that the air bag drives the flexible sealing ring to expand and tightly fill the pump shaft and the inner wall of the pump body to effectively prevent liquid leakage, and facilitates the dispersion and buffering of the impact force of the water flow on the sealing member, ensuring that no matter what fluid pressure or operating conditions the pump is under, it can maintain an optimal sealing state, avoid surface wear of traditional sealing fillers due to long-term impact of water flow, reduce their sealing performance, and enable them to automatically sense the water flow condition in the pump body.

Description

Technical Field

[0001] The invention relates to the technical field of water pump sealing components, and more particularly to a self-sensing water pump sealing component. Background Art

[0002] As an important fluid handling equipment, the core function of a water pump is to lift, transport or compress water under certain special designs. The application field of water pumps is very wide, covering many aspects from daily life water supply to industrial production, agricultural irrigation, etc. Among them, centrifugal pumps are widely used due to their simple structure and efficient working principle.

[0003] When in use, an existing centrifugal pump is assembled through components such as a motor, an impeller, a pump body and a sealing ring. When working, the motor drives the pump shaft to drive the impeller to rotate at high speed, so that the liquid entering the pump body through the water inlet is accelerated and pressurized along the pump casing flow channel under the action of the centrifugal force of the impeller, and finally discharged from the discharge port.

[0004] In actual use of the prior art, due to the long-term entry of water into the pump body, the water will generate impact force on the surface of the sealing packing, causing its surface to gradually wear, thereby reducing its effective sealing area, and reducing the sealing performance of the sealing packing, increasing the risk of leakage. Therefore, a self-sensing water pump sealing assembly is proposed to address the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a self-sensing water pump sealing assembly to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] A self-inductive water pump sealing assembly comprises a pump body, the outer surface of the pump body is fixedly connected to a motor, the output shaft end of the motor is fixedly connected to a pump shaft, and the outer surface of the pump shaft is fixedly connected to an impeller; the sealing member comprises a graphite sealing ring, a hard sealing ring and a flexible sealing ring, the interior of the pump body is provided with a graphite sealing ring, the side of the graphite sealing ring is clamped with a hard sealing ring, and the outer surface of the hard sealing ring is provided with a flexible sealing ring; the buffer member comprises a piston rod, a piston cylinder and a connecting pipe, the interior of the pump body is fixedly connected to the piston cylinder via a connecting block, and the outer surfaces of the two piston cylinders are provided with connecting pipes.

[0008] As a further improvement of the present invention, two piston rods are fixedly connected to the side surfaces of the flexible sealing ring, a piston plate is slidably connected to the interior of the piston cylinder, and the side surfaces of the piston plate are fixedly connected to the piston rods.

[0009] As a further improvement of the present invention, a water inlet and a water outlet are arranged inside the pump body, and a leakage-proof component is arranged inside the water inlet and the water outlet. The leakage-proof component includes a plurality of holes opened inside the water inlet and the water outlet, and a sealing ball is embedded inside the holes.

[0010] As a further improvement of the present invention, the water inlet and the water outlet are movably connected with a water pipe inside, and the outer surface of the water pipe is provided with a plurality of sealing holes, and the sealing holes are engaged with sealing balls.

[0011] As a further improvement of the present invention, sealing rings are fixedly connected inside the water inlet and the water outlet.

[0012] As a further improvement of the present invention, the graphite sealing ring and the hard sealing ring are L-shaped, and the graphite sealing ring and the hard sealing ring are clamped together.

[0013] As a further improvement of the present invention, a disc spring is sleeved and connected to the outer surface of the piston rod, one end of the disc spring is connected to the side of the flexible sealing ring, and the other end is connected to the side of the piston cylinder.

[0014] As a further improvement of the present invention, a damper is fixedly connected to the outer surface of the piston cylinder.

[0015] As a further improvement of the present invention, the interior of the flexible sealing ring is a hollow cavity, an airbag is fitted inside the hollow cavity, a positioning rod is provided inside the airbag, one end of the positioning rod is connected to the airbag, and the other end is abutted against the inner wall of the airbag, and the positioning rods are distributed along the radial annular array of the flexible sealing ring, and the other end of the connecting tube is fixedly connected to the airbag.

[0016] As a further improvement of the present invention, a layer of anti-corrosion paint is applied on the outer surface of the pump body, and a base is fixedly connected to the outer surface of the pump body.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] This solution can enhance the stability of the seal through the mutual coordination of the water pipe, water inlet, water outlet, sealing ring, sealing hole and sealing ball. It can maintain a good sealing state even in the case of water pressure fluctuations or pump body vibration, and ensure an efficient and reliable sealing connection between the water pipe and the pump body. The dynamic sealing ball and sealing hole can improve the convenience of installation and the reliability of the seal.

[0019] Through the cooperation of the piston rod, piston plate, airbag, positioning rod, piston cylinder and connecting tube, the present invention can transport the gas inside the piston cylinder to the airbag through the connecting tube, so that the airbag drives the flexible sealing ring to expand and tightly fill the pump shaft and the inner wall of the pump body, effectively preventing liquid leakage, and facilitating the dispersion and buffering of the impact force of the water flow on the seal. At the same time, through the cooperation of the disc spring and the damper, the impact force of the water flow can be alleviated, ensuring that no matter what fluid pressure or operating conditions the pump is in, it can maintain an optimal sealing state, avoid surface wear of traditional sealing fillers due to long-term impact of water flow, reduce their sealing performance, and enable them to automatically sense the water flow conditions in the pump body.

[0020] This solution uses the graphite sealing ring with self-lubricating and high temperature resistance properties to resist wear and corrosion. As the first layer directly contacting the pump body and pump shaft, it can reduce direct wear. The hard sealing ring can withstand higher pressure and resist the impact of solid particles that may be contained in the pumped liquid on the sealing surface. It can also reduce the wear and physical damage of the flexible sealing ring. The flexible sealing ring can automatically adjust the sealing pressure when the pump is running and respond to changes in internal fluid pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0024] Figure 4 This is a partial structural exploded view of the seal of the present invention;

[0025] Figure 5 It is a partial structural cross-sectional view of the sealing member of the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of the anti-leakage component of the present invention;

[0027] Figure 7 It is a partial structural cross-sectional view of the leakage prevention member of the present invention;

[0028] Figure 8 It is a partial structural cross-sectional view of the flexible sealing ring of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Pump body; 2. Motor; 3. Pump shaft; 4. Impeller; 5. Seal; 501. Graphite seal ring; 502. Hard seal ring; 503. Flexible seal ring; 504. Air bag; 505. Positioning rod; 6. Buffer; 601. Piston rod; 602. Piston cylinder; 603. Piston plate; 604. Connecting pipe; 606. Connecting block; 607. Disc spring; 608. Damper; 7. Water inlet; 8. Water outlet; 9. Leakage prevention part; 901. Hole; 902. Sealing ball; 903. Seal ring; 904. Water pipe; 905. Sealed hole; 10. Base. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 A self-sensing water pump sealing assembly includes a pump body 1, the outer surface of the pump body 1 is fixedly connected to a motor 2, the output shaft end of the motor 2 is fixedly connected to a pump shaft 3, the outer surface of the pump shaft 3 is fixedly connected to an impeller 4, the buffer member 6 includes a piston rod 601, a piston cylinder 602 and a connecting pipe 604, the interior of the pump body 1 is fixedly connected to the piston cylinder 602 through a connecting block 606, and the outer surfaces of the two piston cylinders 602 are provided with connecting pipes 604.

[0034] Specifically, two piston rods 601 are fixedly connected to the side of the flexible sealing ring 503, a piston plate 603 is slidably connected to the inside of the piston cylinder 602, and the side of the piston plate 603 is fixedly connected to the piston rod 601. The inside of the flexible sealing ring 503 is a hollow cavity, and the inside of the hollow cavity is fitted with an airbag 504. A positioning rod 505 is arranged inside the airbag 504, one end of the positioning rod 505 is connected to the airbag 504, and the other end is abutted against the inner wall of the airbag 504, and the positioning rods 505 are distributed along the radial annular array of the flexible sealing ring 503, and the other end of the connecting tube 604 is fixedly connected to the airbag 504;

[0035] Furthermore, when water flows into the pump body 1 through the water inlet 7, it impacts the seal 5, causing the seal 5 to move slightly and transmit the impact force to the two piston rods 601 through the flexible sealing ring 503 so as to effectively disperse and buffer the impact force. When the piston rod 601 moves, it drives the piston plate 603 to slide inside the piston cylinder 602. Through the connecting tube 604, the gas inside the piston cylinder 602 is introduced into the airbag 504 inside the flexible sealing ring 503, so that the airbag 504 drives the flexible sealing ring 503 to expand, so that it can fill the pump shaft more tightly. 3 and the inner wall of the pump body 1 effectively prevent liquid leakage. At the same time, the positioning rod 505 in the airbag 504 can keep the airbag 504 always in contact with the hollow cavity of the flexible sealing ring 503, further enhancing the adaptability of the seal 5 to the pressure fluctuation inside the pump body 1, so that the flexible sealing ring 503 expands to more tightly fill the pump shaft 3 and the inner wall of the pump body 1 to effectively prevent liquid leakage. At the same time, when the piston rod 601 moves, it will drive the disc spring 607 to move. The pressure on the flexible sealing ring 503 can be dynamically adjusted through the elastic deformation and restoring force of the disc spring 607.

[0036] Embodiment 2:

[0037] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , which is the second embodiment of the present invention, and is based on the previous embodiment. The outer surface of the pump body 1 is fixedly connected with the motor 2, the output shaft end of the motor 2 is the pump shaft 3, the outer surface of the pump shaft 3 is fixedly connected with the impeller 4, the sealing member 5 includes a graphite sealing ring 501, a hard sealing ring 502 and a flexible sealing ring 503, the inside of the pump body 1 is provided with the graphite sealing ring 501, the side of the graphite sealing ring 501 is clamped with the hard sealing ring 502, and the outer surface of the hard sealing ring 502 is provided with the flexible sealing ring 503;

[0038] Specifically, the pump body 1 is provided with a water inlet 7 and a water outlet 8, and a leakage prevention member 9 is provided inside the water inlet 7 and the water outlet 8. The leakage prevention member 9 includes a plurality of holes 901 opened inside the water inlet 7 and the water outlet 8, and a sealing ball 902 is embedded inside the hole 901;

[0039] Furthermore, the water pipe 904 is aligned with the water inlet 7 and slowly pushed forward. When the front end of the water pipe 904 contacts the sealing ball 902, the sealing ball 902 uses its own elasticity to deviate toward the inside of the hole 901. As the water pipe 904 contacts the sealing ring 903, the sealing property of the connection between the water pipe 904 and the water inlet 7 can be enhanced. When the water pipe 904 is fully in place, the sealing hole 905 on its surface will be aligned with and engaged with the sealing ball 902, thereby maintaining a good sealing state even in the event of water pressure fluctuations or vibration of the pump body 1. Similarly, the water outlet 8 is installed with another water pipe 904, thereby ensuring an efficient and reliable sealing connection between the water pipe 904 and the pump body 1. At the same time, the graphite sealing ring 501 is used as the first layer to directly contact the pump body 1 and the pump shaft 3 to reduce direct wear.

[0040] Working principle of the present invention: when in use, align the water pipe 904 with the water inlet 7 and push it slowly. When the front end of the water pipe 904 contacts the sealing ball 902, the sealing ball 902 uses its own elasticity to deviate into the hole 901. As the water pipe 904 contacts the sealing ring 903, the sealing performance of the connection between the water pipe 904 and the water inlet 7 can be enhanced. When the water pipe 904 is fully in place, the sealing hole 905 on its surface will be aligned with the sealing ball 902 and snap-fitted, so that a good sealing state can be maintained even in the case of water pressure fluctuations or vibration of the pump body 1. Similarly, the water outlet 8 is installed with another water pipe 904, thereby ensuring an efficient and reliable sealing connection between the water pipe 904 and the pump body 1. At the same time, the graphite sealing ring 501 is used as the first layer to directly contact the pump body 1 and the pump shaft 3 to reduce direct wear. The cooperation between the hard sealing ring 502 and the flexible sealing ring 503 can improve the sealing performance of the pump body 1.

[0041] When water flows into the pump body 1 through the water inlet 7, it impacts the seal 5, causing the seal 5 to move slightly and transmit the impact force to the two piston rods 601 through the flexible sealing ring 503 so as to effectively disperse and buffer the impact force. When the piston rod 601 moves, it drives the piston plate 603 to slide inside the piston cylinder 602. Through the connecting tube 604, the gas inside the piston cylinder 602 is introduced into the airbag 504 inside the flexible sealing ring 503, so that the airbag 504 drives the flexible sealing ring 503 to expand, so that it can more tightly fill the pump shaft 3 and the inner wall of the pump body 1, effectively preventing liquid leakage. At the same time, the positioning rod 505 in the airbag 504 The air bag 504 can be kept in constant contact with the hollow cavity of the flexible sealing ring 503, further enhancing the adaptability of the sealing element 5 to the internal pressure fluctuation of the pump body 1, so that the flexible sealing ring 503 can expand and fill the pump shaft 3 and the inner wall of the pump body 1 more tightly, effectively preventing liquid leakage. At the same time, when the piston rod 601 moves, the disc spring 607 will be driven to move. The elastic deformation and restoring force of the disc spring 607 can dynamically adjust the pressure on the flexible sealing ring 503, thereby ensuring that no matter what the fluid pressure or operating conditions of the pump are, it can maintain an optimal sealing state and avoid surface wear of traditional sealing fillers due to long-term impact of water flow.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A self-sensing water pump sealing assembly, characterized in that: include: A pump body (1), wherein the outer surface of the pump body (1) is fixedly connected to a motor (2), the output shaft end of the motor (2) is fixedly connected to a pump shaft (3), and the outer surface of the pump shaft (3) is fixedly connected to an impeller (4); A sealing member (5), the sealing member (5) comprising a graphite sealing ring (501), a hard sealing ring (502) and a flexible sealing ring (503); the graphite sealing ring (501) is arranged inside the pump body (1); the hard sealing ring (502) is clamped on the side of the graphite sealing ring (501); and the flexible sealing ring (503) is arranged on the outer surface of the hard sealing ring (502); A buffer (6), the buffer (6) comprising a piston rod (601), a piston cylinder (602) and a connecting pipe (604), the interior of the pump body (1) being fixedly connected to the piston cylinder (602) via a connecting block (606), and the outer surfaces of the two piston cylinders (602) being provided with connecting pipes (604); Two piston rods (601) are fixedly connected to the side of the flexible sealing ring (503), a piston plate (603) is slidably connected inside the piston cylinder (602), and the side of the piston plate (603) is fixedly connected to the piston rod (601); The interior of the flexible sealing ring (503) is a hollow cavity, and the interior of the hollow cavity is fitted with an airbag (504). A positioning rod (505) is provided inside the airbag (504), one end of the positioning rod (505) is connected to the airbag (504), and the other end is in contact with the inner wall of the airbag (504), and the positioning rods (505) are distributed along the radial annular array of the flexible sealing ring (503), and the other end of the connecting tube (604) is fixedly connected to the airbag (504).

2. A self-sensing water pump sealing assembly according to claim 1, characterized in that: The pump body (1) is provided with a water inlet (7) and a water outlet (8) inside, and a leakage prevention component (9) is provided inside the water inlet (7) and the water outlet (8). The leakage prevention component (9) comprises a plurality of holes (901) opened inside the water inlet (7) and the water outlet (8), and a sealing ball (902) is embedded inside the hole (901).

3. A self-sensing water pump sealing assembly according to claim 2, characterized in that: The water inlet (7) and the water outlet (8) are movably connected to a water pipe (904), and the outer surface of the water pipe (904) is provided with a plurality of sealing holes (905), and the sealing holes (905) are engaged with the sealing balls (902).

4. A self-sensing water pump sealing assembly according to claim 2, characterized in that: The water inlet (7) and the water outlet (8) are both fixedly connected to a sealing ring (903) inside.

5. The self-sensing water pump sealing assembly according to claim 1, characterized in that: The graphite sealing ring (501) and the hard sealing ring (502) are L-shaped, and the graphite sealing ring (501) and the hard sealing ring (502) are clamped together.

6. The self-sensing water pump sealing assembly according to claim 1, characterized in that: The outer surface of the piston rod (601) is sleeved with a disc spring (607), one end of the disc spring (607) is connected to the side of the flexible sealing ring (503), and the other end is connected to the side of the piston cylinder (602).

7. The self-sensing water pump sealing assembly according to claim 1, characterized in that: A damper (608) is fixedly connected to the outer surface of the piston cylinder (602).

8. The self-sensing water pump sealing assembly according to claim 1, characterized in that: A layer of anti-corrosion paint is applied to the outer surface of the pump body (1), and a base (10) is fixedly connected to the outer surface of the pump body (1).

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