Leakage-proof mechanism for centrifugal pump

Abstract

The utility model discloses a leakage-proof mechanism for a centrifugal pump. The leakage-proof mechanism comprises a bottom plate, a pump shell, a motor, a centrifugal spiral blade arranged in the pump shell and a sealing mechanism arranged at the top of the pump shell. A top pipeline of the pump shell is connected with a water outlet pipe; the sealing mechanism comprises a fixed ring, a sliding ring, a plurality of springs arranged between the fixed ring and the sliding ring, a connecting pipe arranged on the circumferential inner wall of the water outlet pipe, a leakage-proof plate arranged on the circumferential outer wall of the connecting pipe, and a connecting plate arranged on the circumferential outer wall of the water outlet pipe; and through the arrangement of a fixed ring, a sliding ring and a spring in the sealing mechanism, the sealing performance of the centrifugal pump in a high-pressure working environment can be effectively improved. When the connecting pipe is in threaded connection with the water outlet pipe under the elastic action of the spring, the sliding ring can be tightly attached to the inner wall of the water outlet pipe, so that liquid leakage is prevented, the stability of the sliding ring can be enhanced through the sliding groove and the sliding block, the working efficiency of the centrifugal pump is remarkably improved, and the service life of the centrifugal pump is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a leakage prevention mechanism for centrifugal pumps. Background Art

[0002] As a widely used fluid conveying equipment, centrifugal pumps play an important role in industrial production, agricultural irrigation, urban water supply and other fields.

[0003] Sealing performance is a key indicator of centrifugal pump performance. Traditional sealing methods often use simple mechanical seals or packing seals. These sealing methods are prone to leakage in high-pressure, high-temperature, or corrosive environments. This not only affects pump efficiency but can also pollute the environment and even cause safety accidents. Furthermore, traditional centrifugal pumps present numerous inconveniences in terms of maintenance and component replacement. For example, replacing seals often requires disassembling the entire pump body, which not only increases maintenance complexity, but also prolongs downtime and reduces production efficiency.

[0004] Therefore, in order to solve the above-mentioned shortcomings, a leakage prevention mechanism for a centrifugal pump is proposed. Summary of the Invention

[0005] The utility model overcomes the deficiencies of the prior art and provides a leakage-proof mechanism for a centrifugal pump.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a leakage prevention mechanism for a centrifugal pump, comprising: a bottom plate, a pump casing and a motor, a centrifugal spiral blade arranged in the pump casing, and a sealing mechanism arranged on the top of the pump casing;

[0007] The top pipe of the pump housing is connected to a water outlet pipe, and the sealing mechanism includes a fixed ring and a sliding ring, a plurality of springs arranged between the fixed ring and the sliding ring, a connecting pipe arranged on the inner wall of the circumference of the water outlet pipe, a leak-proof plate arranged on the outer wall of the circumference of the connecting pipe, and a connecting plate arranged on the outer wall of the circumference of the water outlet pipe;

[0008] The fixed ring is fixedly connected to the circumferential inner wall of the water outlet pipe, the sliding ring is slidably connected to the circumferential inner wall of the water outlet pipe, a plurality of springs are fixedly installed between the fixed ring and the sliding ring, and the circumferential outer wall of the connecting pipe is threadedly connected to the circumferential inner wall of the water outlet pipe.

[0009] In a preferred embodiment of the present invention, a plurality of sliding grooves are provided on the circumferential inner wall of the water outlet pipe, a plurality of sliders are slidably connected in the plurality of sliding grooves, and the plurality of sliders are fixedly connected to the circumferential outer wall of the sliding ring.

[0010] In a preferred embodiment of the present invention, a leak-proof plate is fixedly connected to the circumferential outer wall of the connecting pipe, and the bottom of the leak-proof plate is tightly fitted with the upper surface of the water outlet pipe.

[0011] In a preferred embodiment of the present invention, a connecting plate is fixedly connected to the bottom of the leakage-proof plate, and the circumferential inner wall of the connecting plate is threadedly connected to the circumferential outer wall of the water outlet pipe.

[0012] In a preferred embodiment of the present invention, the centrifugal spiral blade is located in the pump casing, and one end of the motor output shaft passes through the pump casing and is fixedly connected to one side of the centrifugal spiral blade.

[0013] In a preferred embodiment of the present invention, one side of the centrifugal spiral blade is rotatably connected to a stabilizing plate, and a plurality of reinforcing rods are fixedly connected to the circumferential outer wall of the stabilizing plate.

[0014] In a preferred embodiment of the present invention, the other ends of the plurality of reinforcement rods are fixedly connected to the circumferential inner wall of the pump casing.

[0015] In a preferred embodiment of the present invention, a pipe on one side of the pump housing away from the motor is connected to a water inlet pipe.

[0016] In a preferred embodiment of the present invention, the bottom of the motor is fixedly connected to two fixing plates, and the bottoms of the two fixing plates are fixedly connected to the upper surface of the bottom plate.

[0017] In a preferred embodiment of the present invention, two fixing rods are fixedly connected to the bottom of the pump housing, and the bottoms of the two fixing rods are fixedly connected to the upper surface of the bottom plate.

[0018] The present invention solves the defects in the background technology and has the following beneficial effects:

[0019] (1) The present invention provides a leakage prevention mechanism for a centrifugal pump. By configuring a fixed ring, a sliding ring, and a spring within the sealing mechanism, the sealing performance of the centrifugal pump under high-pressure working conditions can be effectively improved. The elastic action of the spring enables the sliding ring to fit tightly against the inner wall of the outlet pipe when the connecting pipe is threadedly connected to the outlet pipe, thereby preventing liquid leakage. In addition, the configuration of the chute and slider further enhances the stability of the sliding ring, significantly improving the working efficiency and service life of the centrifugal pump.

[0020] (2) The present invention provides a leak-proof mechanism for a centrifugal pump, which is connected to the water outlet pipe by a threaded connection through a connecting pipe and a connecting plate, making the installation process simpler and faster, and can effectively improve the sealing performance of the centrifugal pump under high-pressure working environment, facilitating subsequent maintenance and replacement. When the sealing mechanism needs to be repaired or replaced, the relevant components can be easily removed by simply loosening the threaded connection, greatly reducing maintenance costs and operating difficulty. At the same time, the motor and pump housing are stably connected to the base plate through a fixing plate and a fixing rod, ensuring the stability and reliability of the entire centrifugal pump structure.

[0021] (3) The present invention provides a leakage prevention mechanism for a centrifugal pump. By providing a stabilizing plate and a reinforcing rod on one side of the centrifugal spiral blade, the stability of the centrifugal spiral blade during operation can be effectively enhanced, and the noise and wear caused by vibration can be reduced. The reinforcing rod connects the stabilizing plate to the inner wall of the pump casing to form a stable support structure, allowing the centrifugal spiral blade to rotate more smoothly, thereby improving the pumping efficiency and stability of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a three-dimensional structural diagram of the device body of a preferred embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional perspective structural diagram of the device body of a preferred embodiment of the present utility model;

[0025] Figure 3 It is an enlarged structural diagram of part A of a preferred embodiment of the present utility model.

[0026] In the figure: 1. Motor; 2. Pump casing; 3. Bottom plate; 4. Fixed plate; 5. Fixed rod; 6. Water inlet pipe; 7. Connecting pipe; 8. Sealing mechanism; 801. Leakage-proof plate; 802. Connecting plate; 803. Slide groove; 804. Fixed ring; 805. Sliding ring; 806. Spring; 807. Slider; 9. Centrifugal spiral blade; 10. Stabilizing plate; 12. Reinforcement rod; 13. Water outlet pipe. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0028] like Figure 1 As shown, a leakage prevention mechanism for a centrifugal pump comprises: a bottom plate 3, a pump casing 2 and a motor 1, a centrifugal spiral blade 9 arranged in the pump casing 2, and a sealing mechanism 8 arranged on the top of the pump casing 2;

[0029] like Figure 2-Figure 3 As shown, the top pipe of the pump housing 2 is connected to the water outlet pipe 13, and the sealing mechanism 8 includes a fixed ring 804 and a sliding ring 805, a plurality of springs 806 arranged between the fixed ring 804 and the sliding ring 805, a connecting pipe 7 arranged on the inner wall of the circumference of the water outlet pipe 13, a leak-proof plate 801 arranged on the outer wall of the circumference of the connecting pipe 7, and a connecting plate 802 arranged on the outer wall of the circumference of the water outlet pipe 13;

[0030] The fixed ring 804 is fixedly connected to the circumferential inner wall of the water outlet pipe 13, the sliding ring 805 is slidably connected to the circumferential inner wall of the water outlet pipe 13, a plurality of springs 806 are fixedly installed between the fixed ring 804 and the sliding ring 805, and the circumferential outer wall of the connecting pipe 7 is threadedly connected to the circumferential inner wall of the water outlet pipe 13;

[0031] The circumferential inner wall of the water outlet pipe 13 is provided with a number of slide grooves 803, and a number of sliders 807 are respectively slidably connected in the circumferential outer wall of the sliding ring 805. The circumferential outer wall of the connecting pipe 7 is fixedly connected with a leak-proof plate 801, and the bottom of the leak-proof plate 801 is tightly fitted with the upper surface of the water outlet pipe 13. The bottom of the leak-proof plate 801 is fixedly connected with a connecting plate 802, and the circumferential inner wall of the connecting plate 802 is threadedly connected to the circumferential outer wall of the water outlet pipe 13.

[0032] It should be noted that the arrangement of fixed ring 804, sliding ring 805, and spring 806 within sealing mechanism 8 significantly enhances the centrifugal pump's sealing performance under high-pressure operating conditions. The elasticity of spring 806 exerts an upward force on connecting pipe 7 when it is threadedly connected to outlet pipe 13, enhancing its securement and preventing liquid leakage. Furthermore, the threaded connection between connecting pipe 7 and outlet pipe 13 greatly simplifies installation and facilitates subsequent maintenance and replacement.

[0033] The bottom of the leak-proof plate 801 fits tightly against the upper surface of the outlet pipe 13, and a connecting plate 802 is fixedly connected to the bottom, which is connected to the outer circumference of the outlet pipe 13 through a threaded connection. This forms a double leak-proof function, thereby further enhancing the leak-proof capability of the centrifugal pump and ensuring the stability and safety of the equipment.

[0034] like Figure 2-Figure 3 As shown, the centrifugal spiral blade 9 is located in the pump housing 2, one end of the output shaft of the motor 1 passes through the pump housing 2 and is fixedly connected to one side of the centrifugal spiral blade 9, one side of the centrifugal spiral blade 9 is rotatably connected to a stabilizing plate 10, and a plurality of reinforcing rods 12 are fixedly connected to the circumferential outer wall of the stabilizing plate 10;

[0035] The other ends of the reinforcement rods 12 are fixedly connected to the circumferential inner wall of the pump casing 2. The pipe on the side of the pump casing 2 away from the motor 1 is connected to the water inlet pipe 6. The bottom of the motor 1 is fixedly connected to two fixing plates 4, and the bottoms of the two fixing plates 4 are fixedly connected to the upper surface of the base plate 3. The bottom of the pump casing 2 is fixedly connected to two fixing rods 5, and the bottoms of the two fixing rods 5 are fixedly connected to the upper surface of the base plate 3.

[0036] It should be noted that one side of the centrifugal spiral blade 9 is rotatably connected to a stabilizing plate 10 and is fixedly connected to the circumferential inner wall of the pump casing 2 via a number of reinforcing rods 12, which can enhance the stability of the centrifugal spiral blade 9 during operation.

[0037] When using the present invention, the motor 1 is fixed to the base plate 3 via the fixing plate 4, and the pump housing 2 is also fixed to the base plate 3 via the fixing rod 5. Ensure that the output shaft of the motor 1 can smoothly pass through the pump housing 2. Fix the centrifugal spiral blade 9 to the output shaft of the motor 1 and ensure that it rotates stably. Fix the motor 1 to the base plate 3 through the fixing plate 4, and then fix the pump casing 2 to the base plate 3 through the fixing rod 5. When installing the connecting pipe 7, thread the connecting pipe 7 to the water outlet pipe 13 so that the connecting pipe 7 squeezes the sliding ring 805, and through the setting of the spring 806, the spring 806 exerts an upward force on the connecting pipe 7. While the connecting pipe 7 is threadedly connected to the water outlet pipe 13, the circumferential inner wall of the connecting plate 802 is threadedly connected to the circumferential outer wall of the water outlet pipe 13, so that the bottom of the leak-proof plate 801 fits tightly with the upper surface of the water outlet pipe 13. When pumping water, start the motor 1, and the motor 1 will drive the centrifugal spiral blade 9 to start rotating, so that water is discharged from the water inlet pipe 6 through the centrifugal spiral blade 9 to the connecting pipe 7.

[0038] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A leakage prevention mechanism for a centrifugal pump, comprising: A base plate (3), a pump housing (2) and a motor (1), a centrifugal spiral blade (9) arranged in the pump housing (2), and a sealing mechanism (8) arranged on the top of the pump housing (2), It is characterized by: The top pipe of the pump housing (2) is connected to a water outlet pipe (13), and the sealing mechanism (8) includes a fixed ring (804) and a sliding ring (805), a plurality of springs (806) arranged between the fixed ring (804) and the sliding ring (805), a connecting pipe (7) arranged on the inner circumference of the water outlet pipe (13), a leak-proof plate (801) arranged on the outer circumference of the connecting pipe (7), and a connecting plate (802) arranged on the outer circumference of the water outlet pipe (13); The fixed ring (804) is fixedly connected to the circumferential inner wall of the water outlet pipe (13), the sliding ring (805) is slidably connected to the circumferential inner wall of the water outlet pipe (13), a plurality of springs (806) are fixedly installed between the fixed ring (804) and the sliding ring (805), and the circumferential outer wall of the connecting pipe (7) is threadedly connected to the circumferential inner wall of the water outlet pipe (13).

2. A leakage prevention mechanism for a centrifugal pump according to claim 1, characterized in that: The circumferential inner wall of the water outlet pipe (13) is provided with a plurality of sliding grooves (803), and a plurality of sliding blocks (807) are slidably connected in the plurality of sliding grooves (803), and the plurality of sliding blocks (807) are fixedly connected to the circumferential outer wall of the sliding ring (805).

3. The anti-leakage mechanism for a centrifugal pump according to claim 1, characterized in that: A leak-proof plate (801) is fixedly connected to the circumferential outer wall of the connecting pipe (7), and the bottom of the leak-proof plate (801) is tightly fitted to the upper surface of the water outlet pipe (13).

4. A leakage prevention mechanism for a centrifugal pump according to claim 3, characterized in that: The bottom of the leak-proof plate (801) is fixedly connected to a connecting plate (802), and the circumferential inner wall of the connecting plate (802) is threadedly connected to the circumferential outer wall of the water outlet pipe (13).

5. The anti-leakage mechanism for a centrifugal pump according to claim 1, characterized in that: The centrifugal spiral blade (9) is located in the pump housing (2), and one end of the output shaft of the motor (1) passes through the pump housing (2) and is fixedly connected to one side of the centrifugal spiral blade (9).

6. The anti-leakage mechanism for a centrifugal pump according to claim 1, characterized in that: One side of the centrifugal spiral blade (9) is rotatably connected to a stabilizing plate (10), and a plurality of reinforcing rods (12) are fixedly connected to the circumferential outer wall of the stabilizing plate (10).

7. The anti-leakage mechanism for a centrifugal pump according to claim 6, characterized in that: The other ends of the plurality of reinforcing rods (12) are fixedly connected to the circumferential inner wall of the pump housing (2).

8. The leakage prevention mechanism for a centrifugal pump according to claim 1, characterized in that: A water inlet pipe (6) is connected to a pipe on one side of the pump housing (2) away from the motor (1).

9. The anti-leakage mechanism for a centrifugal pump according to claim 1, characterized in that: The bottom of the motor (1) is fixedly connected to two fixing plates (4), and the bottoms of the two fixing plates (4) are fixedly connected to the upper surface of the bottom plate (3).

10. The anti-leakage mechanism for a centrifugal pump according to claim 1, characterized in that: Two fixing rods (5) are fixedly connected to the bottom of the pump housing (2), and the bottoms of the two fixing rods (5) are fixedly connected to the upper surface of the bottom plate (3).

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