Corrosion-resistant sealing structure of horizontal single-stage centrifugal pump

Abstract

The utility model discloses a corrosion-resistant sealing structure of a horizontal single-stage centrifugal pump, which comprises a centrifugal pump body, the centrifugal pump body is connected with a water pipe through a flange, and a sealing element is arranged at the flange; the centrifugal pump is reasonable in structure and novel in design, during installation, a water pipe penetrates through the through hole to enter the box body, a flange of the water pipe is connected with a flange of a centrifugal pump body, and therefore the clamping plate connected with the water pipe is driven to move, the clamping plate is clamped at the connecting position of the flanges and seals the connecting position of the flanges, and finally the threaded rod is rotated. The threaded rod can ascend and descend, then the plugging block can be driven to move, the through hole can be plugged through the plugging block, external water is prevented from entering the box body, when water leaks from the flange connecting position, the water drips at the bottom of the flange along the surface of the flange, the water abuts against the sensor, the sensor sends a signal to an upper computer, and a worker is conveniently reminded of overhauling.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a sealing structure for a corrosion-resistant horizontal single-stage centrifugal pump. Background Technology

[0002] Centrifugal pumps work by using the rotation of an impeller to cause water to move in a centrifugal motion. Before starting the pump, the pump casing and suction pipe must be filled with water. Then, the motor is started, and the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown towards the outer edge of the impeller. It then flows into the pump's discharge pipe through the flow channel of the volute casing. Currently, most centrifugal pumps use flanges for connection. Flange connections have poor sealing performance, which can easily affect the performance of the centrifugal pump. Utility Model Content

[0003] To address the shortcomings of existing technologies, a sealing structure for a corrosion-resistant horizontal single-stage centrifugal pump is disclosed, comprising a centrifugal pump body, a water pipe connected to the centrifugal pump body via a flange, and a sealing element provided at the flange.

[0004] The sealing element includes a housing mounted on the centrifugal pump body. The housing has symmetrically arranged clamping plates at the top and bottom. Each clamping plate has a mounting block at both the front and rear ends. A pair of pull rods spirally pass through the corresponding mounting blocks. The bottom end of the pull rod is rotatably mounted on the lower wall of the housing, and the upper end of the pull rod rotatably passes through the upper wall of the housing. A first gear is mounted on the top end of the pull rod. A second gear is meshed between the first gears. The second gear is rotatably mounted on the upper wall of the housing via a support column. A turntable is mounted on the second gear.

[0005] The housing has a through hole at the end furthest from the centrifugal pump body;

[0006] A sensor is provided at the lower end of the flange, and the sensor is installed on the lower wall of the housing;

[0007] A sealing structure is provided at the through hole. The sealing structure includes fixed blocks located at both ends of the upper end of the through hole. A threaded rod is spirally passed through the fixed block. The sealing block is rotatably installed on the threaded rod near the end of the water pipe.

[0008] Preferably, a sealing gasket is installed on the clamp plate near the flange end.

[0009] Preferably, the front wall of the housing has an operating port.

[0010] This utility model has the following beneficial effects: The utility model has a reasonable structure and novel design. During installation, the water pipe is passed through the through hole into the housing, and the flange of the water pipe is connected to the flange of the centrifugal pump body. The flange is connected through the operating port. After connection, the operating port is sealed with a plug to prevent external water from entering the housing. Subsequently, rotating the turntable drives the second gear to rotate, which in turn drives the first gear to rotate, causing the tie rod to rotate within the mounting block. This allows a pair of mounting blocks to move closer together, thereby moving the connected clamping plate. The clamping plate clamps the flange connection, sealing the flange connection. Finally, rotating the threaded rod allows it to rise and fall, which in turn moves the sealing block. The sealing block seals the through hole, preventing external water from entering the housing. When water leaks at the flange connection, the water drips down the flange surface to the bottom of the flange and hits the sensor. The sensor sends a signal to the host computer, facilitating maintenance by alerting personnel. Attached Figure Description

[0011] Figure 1 This is a schematic front view of the present invention;

[0012] Figure 2 This is a schematic left-side view of the present invention.

[0013] In the diagram: 1-Centrifugal pump body, 2-Water pipe, 3-Box, 4-Clamping plate, 5-Mounting block, 6-Pull rod, 7-First gear, 8-Second gear, 9-Turntable, 10-Sealing gasket, 11-Through hole, 12-Operating port, 13-Sensor, 14-Fixing block, 15-Threaded rod, 16-Sealing block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 A sealing structure for a corrosion-resistant horizontal single-stage centrifugal pump includes a centrifugal pump body 1, a water pipe 2 connected to the centrifugal pump body 1 via a flange, and a sealing element provided at the flange for sealing the flange connection.

[0016] The sealing component includes a housing 3 installed on the centrifugal pump body 1. The housing 3 has symmetrically arranged clamping plates 4 at the top and bottom. The clamping plates 4 have mounting blocks 5 at both ends. The mounting blocks 5 are spirally threaded through the upper and lower mounting blocks 5. The mounting blocks 5 are located on the reverse threads of the pull rods 6. The bottom end of the pull rods 6 is rotatably mounted on the lower wall of the housing 3. The upper end of the pull rods 6 is rotatably threaded through the upper wall of the housing 3. The top end of the pull rods 6 is equipped with a first gear 7. The first gears 7 are meshed with a second gear 8. The second gear 8 is rotatably mounted on the upper wall of the housing 3 through a support column. The second gear 8 is equipped with a turntable 9.

[0017] Rotating the turntable 9 drives the second gear 8 to rotate, which in turn drives the first gear 7 to rotate, thereby causing the tie rod 6 to rotate within the mounting block 5. This allows the pair of mounting blocks 5 to move closer or further apart, thereby moving the clamping plate 4 connected to it. The clamping plate 4 is an arc-shaped structure that matches the outer surface of the flange. By clamping the flange connection with the clamping plate 4, the flange connection is sealed.

[0018] A sealing gasket 10 is installed on the clamp plate 4 near the flange end to further seal the flange connection;

[0019] The housing 3 has a through hole 11 at the end away from the centrifugal pump body 1 for the flange of the water pipe 2 to pass through;

[0020] An operating port 12 is provided on the front wall of the housing 3 to facilitate the connection of the flange inside the housing 3;

[0021] A sensor 13 is installed at the lower end of the flange to detect whether there is water at the bottom of the box 3. The specific model is known to those skilled in the art and will not be described in detail. The sensor 13 is installed on the lower wall of the box 3.

[0022] A sealing structure is provided at the through hole 11. The sealing structure includes fixing blocks 14 located at both ends of the upper end of the through hole 11. A threaded rod 15 is spirally passed through the fixing block 14. A sealing block 16 is rotatably installed on the threaded rod 15 near the end of the water pipe 2.

[0023] Rotating the threaded rod 15 allows it to rise and fall, which in turn moves the sealing block 16. The sealing block 16 can block the through hole 11, preventing external water from entering the tank 3. The sealing block 16 has an arc-shaped structure that matches the water pipe 2.

[0024] Example: During installation, water pipe 2 is passed through through hole 11 into housing 3, and the flange of water pipe 2 is connected to the flange of centrifugal pump body 1. The flange is connected through operating port 12. After connection, operating port 12 is sealed with a plug to prevent external water from entering housing 3 through operating port 12. Then, turntable 9 is rotated, driving second gear 8 to rotate, which in turn drives first gear 7 to rotate, thereby causing pull rod 6 to rotate in mounting block 5. This allows a pair of mounting blocks 5 to move closer to each other, thereby moving the clamping plate 4 connected to them. The clamping plate 4 clamps the flange connection to seal the flange connection. Finally, rotating threaded rod 15 allows threaded rod 15 to rise and fall, which in turn moves sealing block 16. Sealing block 16 can seal through hole 11 to prevent external water from entering housing 3. When the flange connection leaks, water drips down the flange surface to the bottom of the flange and hits sensor 13. Sensor 13 sends a signal to the host computer to remind staff to perform maintenance.

[0025] In the description of this solution, it should be noted that, unless otherwise explicitly specified and limited, the terms 'installation,' 'connection,' 'linking,' and 'communication' should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components; and they can refer to wireless connections or wired connections. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a corrosion-resistant horizontal single-stage centrifugal pump, characterized in that, It includes a centrifugal pump body (1), which is connected to a water pipe (2) via a flange, and a sealing element is provided at the flange; The sealing element includes a housing (3) installed on the centrifugal pump body (1). The housing (3) is symmetrically arranged with clamps (4) at the top and bottom. The clamps (4) are equipped with mounting blocks (5) at both ends. The mounting blocks (5) are spirally connected to each other. The bottom end of the pull rod (6) is rotatably installed on the lower wall of the housing (3). The upper end of the pull rod (6) is rotatably connected to the upper wall of the housing (3). The top end of the pull rod (6) is equipped with a first gear (7). The first gear (7) is meshed with a second gear (8). The second gear (8) is rotatably installed on the upper wall of the housing (3) through a support column. A turntable (9) is installed on the second gear (8). The housing (3) has a through hole (11) at the end away from the centrifugal pump body (1); A sensor (13) is provided at the lower end of the flange, and the sensor (13) is installed on the lower wall of the housing (3); A sealing structure is provided at the through hole (11). The sealing structure includes fixed blocks (14) located at both ends of the upper end of the through hole (11). A threaded rod (15) is spirally passed through the fixed block (14). A sealing block (16) is rotatably installed on the threaded rod (15) near the end of the water pipe (2).

2. The sealing structure of a corrosion-resistant horizontal single-stage centrifugal pump according to claim 1, characterized in that, The clamp (4) is fitted with a sealing gasket (10) near the flange end.

3. The sealing structure of a corrosion-resistant horizontal single-stage centrifugal pump according to claim 1, characterized in that, The front wall of the box (3) is provided with an operation port (12).

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