A horizontal single-suction multi-stage segmental centrifugal pump

Abstract

The present invention is applicable to the technical field of water pumps and provides a horizontal single-suction multi-stage segmental centrifugal pump, comprising a water pump casing, a rotating shaft, an impeller, a water outlet flange, a discharge section sealing sleeve, a spring and a rotating plate. The rotating plate is in an elliptical plate-like structure, is sleeved on the rotating shaft inside the sealing sleeve, and is fixedly connected to the rotating shaft. The rotating shaft can drive the rotating plate to rotate during the rotation process. When the long semi-axis of the rotating plate rotates to a vertical state, the rotating plate presses the sealing sleeve, so that the sealing sleeve compresses the spring at the bottom thereof to contract, so that the sealing sleeve moves downward along the discharge section. At this time, external clean water can flow into the discharge section. When the short semi-axis of the rotating plate rotates to a vertical state, the sealing sleeve loses the pressing force of the rotating shaft, slides upward under the action of the restoring force of the spring, and completely seals the two sides of the discharge section, thereby avoiding the problem of low water outlet efficiency at the water outlet flange caused by splashing of clean water inside the discharge section through openings on both sides of the discharge section when the impeller rotates.

Description

Technical Field

[0001] The invention belongs to the technical field of water pumps, and in particular relates to a horizontal single-suction multi-stage segmental centrifugal pump. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller.

[0003] For a multi-stage segmented centrifugal pump, when multiple water outlet flanges are provided, a small amount of water will overflow from the connecting channel on the side of the impeller during rotation of the impeller, thereby causing energy waste when the motor rotates, resulting in low water outlet efficiency of the centrifugal pump. Summary of the invention

[0004] The present invention provides a horizontal single-suction multi-stage segmented centrifugal pump, which aims to solve the problem that, for a multi-stage segmented centrifugal pump, when multiple water outlet flanges are provided, a small amount of water will overflow from the connecting channel on the side of the impeller during the rotation of the impeller, thereby causing energy waste when the motor rotates and resulting in low water outlet efficiency of the centrifugal pump.

[0005] The present invention is implemented as follows: a horizontal single-suction multi-stage segmented centrifugal pump includes a water pump casing, a rotating shaft, an impeller, a water outlet flange, a discharge section sealing sleeve, a spring and a rotating plate, wherein the rotating shaft passes through the water pump casing and is rotatably connected to the water pump casing, the impeller is fixedly connected to the outer surface of the rotating shaft, the discharge section passes through the water pump casing and is fixedly connected to the water pump casing, the sealing sleeve is fixedly connected to the top of the spring, the bottom of the spring is fixedly connected to the inner bottom surface of the discharge section, the rotating plate is located inside the discharge section, and the rotating plate is sleeved on the outer surface of the rotating shaft and is fixedly connected to the rotating shaft.

[0006] Preferably, a water inlet flange is provided on one side of the water pump housing, the water inlet flange is communicated with the interior of the water pump housing, and an external thread for screwing a water pipe is provided on the outer surface of the water inlet flange away from the water pump housing.

[0007] Preferably, there are multiple impellers, with every two impellers forming a group, each group of impellers being fixedly connected to the upper and lower sides of the rotating shaft respectively, and multiple groups of impellers are equidistantly arranged along the length direction of the rotating shaft.

[0008] Preferably, a plurality of connecting plates are provided at the bottom of the impeller, and the plurality of impellers correspond to the plurality of connecting plates one by one, and are fixedly connected to the outer surface of the rotating shaft through the connecting plates.

[0009] Preferably, the bottom of the water outlet flange passes through the water pump casing through a circular through hole opened at the top of the water pump casing, and is fixedly connected to the discharge section.

[0010] Preferably, the interior of the spitting section is hollow, and a water inlet and a water outlet are respectively provided on the left and right sides of the spitting section, and the water inlet and the water outlet are symmetrically distributed along the central axis of the spitting section.

[0011] Preferably, the rotating shaft passes through the discharging section through a water inlet and a water outlet provided on the discharging section, and is rotatably connected to the discharging section.

[0012] Preferably, slide grooves are provided on the left and right sides of the sealing sleeve, and downwardly recessed notches are provided on the front and rear sides of the sealing sleeve. The slide grooves are clamped on the two sides of the rotating shaft and are slidably connected with the rotating shaft.

[0013] Preferably, the rotating plate is an elliptical plate-shaped structure, and the rotating plate is sleeved on the rotating shaft located inside the sealing sleeve and fixedly connected to the rotating shaft.

[0014] Preferably, one end of the rotating shaft away from the water inlet flange passes through the water pump housing and is fixedly connected to the output end of the external motor.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: a horizontal single-suction multi-stage segmented centrifugal pump of the present invention is provided with a water outlet flange, a discharge section, a sealing sleeve, a spring and a rotating plate. The rotating plate is an elliptical plate structure, which is sleeved on the rotating shaft inside the sealing sleeve and is fixedly connected to the rotating shaft. The rotating shaft can drive the rotating plate to rotate during the rotation process. When the long semi-axis of the rotating plate rotates to a vertical state, the rotating plate presses the sealing sleeve, so that the sealing sleeve compresses the spring at its bottom to contract, so that the sealing sleeve moves down along the discharge section. At this time, external clean water can flow into the discharge section. When the short semi-axis of the rotating plate rotates to a vertical state, the sealing sleeve loses the compressive force of the rotating sleeve, and slides upward under the action of the restoring force of the spring, completely sealing the two sides of the discharge section, thereby avoiding the clean water inside the discharge section from splashing out through the openings on both sides of the discharge section when the impeller rotates, causing the problem of low water discharge efficiency at the water outlet flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the discharge section in the present invention;

[0018] Figure 3 It is a schematic diagram of the rotating plate connection structure in the present invention;

[0019] In the figure: 11, water pump housing; 12, water inlet flange; 13, rotating shaft; 14, connecting plate; 15, impeller; 16, water outlet flange; 17, discharge section; 18, water inlet; 19, water outlet; 20, sealing sleeve; 21, spring; 22, rotating plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1-3 The present invention provides a technical solution: a horizontal single-suction multi-stage segmental centrifugal pump, comprising a water pump housing 11, a rotating shaft 13, an impeller 15, a water outlet flange 16, a sealing sleeve 20 of a discharge section 17, a spring 21 and a rotating plate 22, the rotating shaft 13 passes through the water pump housing 11 and is rotatably connected to the water pump housing 11, the impeller 15 is fixedly connected to the outer surface of the rotating shaft 13, the discharge section 17 passes through the water pump housing 11 and is fixedly connected to the water pump housing 11, the sealing sleeve 20 is fixedly connected to the top of the spring 21, the bottom of the spring 21 is fixedly connected to the inner bottom surface of the discharge section 17, the rotating plate 22 is located inside the discharge section 17, the rotating plate 22 is sleeved on the outer surface of the rotating shaft 13, and is fixedly connected to the rotating shaft 13.

[0022] In the present embodiment, a through hole is provided on the water pump housing 11, and the water outlet flange 16 passes through the water pump housing 11 through the through hole and is fixedly connected to the discharge section 17. Water inlets 18 and water outlets 19 are provided on both sides of the discharge section 17. The rotating shaft 13 passes through the discharge section 17 through the water inlet 18 and the water outlet 19 and is rotatably connected to the discharge section 17. A spring 21 is provided at the bottom of the discharge section 17, and a sealing sleeve 20 is fixedly connected to the top of the spring 21. Slide grooves are provided on both sides of the sealing sleeve 20, and are slidably connected to the rotating shaft 13 through the slide grooves. The rotating plate 22 is an elliptical plate-shaped structure, and the rotating plate 22 is sleeved on the rotating shaft 13 located inside the sealing sleeve 20 and is fixedly connected to the rotating shaft 13. When the rotating plate 22 When the long semi-axis of the rotating plate 22 rotates to a vertical state, the rotating plate 22 compresses the sealing sleeve 20, so that the sealing sleeve 20 compresses the spring 21 at the bottom thereof to contract. At this time, the sealing sleeve 20 moves downward along the discharge section 17, exposing the water inlet 18 and the water outlet 19 on both sides of the discharge section 17, and the external clean water can flow into the discharge section 17 through the water inlet 18. When the short semi-axis of the rotating plate 22 rotates to a vertical state, the sealing sleeve 20 slides upward under the restoring force of the spring 21, and the water inlet 18 and the water outlet 19 are completely sealed, so as to prevent the clean water inside the discharge section 17 from splashing out through the water inlet 18 and the water outlet 19 opened on both sides of the discharge section 17 when the impeller 15 rotates, causing the problem of low water outlet efficiency at the water outlet flange 16.

[0023] In this embodiment, one end of the water pump housing 11 is fixedly connected to a water inlet flange 12, and the outer surface of the water inlet flange 12 is provided with an external thread. When in use, the external water pipe is connected to the water pump housing 11 through the water inlet flange 12. A rotating shaft 13 is provided inside the water pump housing 11, and the rotating shaft 13 passes through the water pump housing 11 and is rotatably connected to the water pump housing 11. A plurality of impellers 15 are provided on the outer surface of the rotating shaft 13, and the plurality of impellers 15 are evenly arranged along the length direction of the rotating shaft 13, and are fixedly connected to the rotating shaft 13 through a connecting plate 14. The end of the rotating shaft 13 away from the water inlet flange 12 is connected to an external motor The output end of the pump is fixedly connected, and the rotation of the external motor drives the rotating shaft 13 to rotate, thereby driving the impeller 15 fixedly connected to the rotating shaft 13 to rotate. The centrifugal force generated when the impeller 15 rotates throws the clean water in the inner cavity of the water pump housing 11 out, causing the pressure inside the water pump housing 11 to decrease and generate suction, and the clean water inside the water inlet flange 12 is discharged. A through hole is opened on the water pump housing 11, and the water outlet flange 16 passes through the water pump housing 11 through the through hole and is fixedly connected to the discharge section 17. The discharge section 17 is provided with a water inlet 18 and a water outlet 19 on both sides. The rotating shaft 13 passes through the water inlet 18 and The water outlet 19 passes through the discharge section 17 and is rotatably connected to the discharge section 17. A spring 21 is provided at the bottom of the discharge section 17. A sealing sleeve 20 is fixedly connected to the top of the spring 21. Slide grooves are provided on both sides of the sealing sleeve 20, and the sealing sleeve 20 is slidably connected to the rotating shaft 13 through the slide grooves. The rotating plate 22 is an elliptical plate structure. The rotating plate 22 is sleeved on the rotating shaft 13 located inside the sealing sleeve 20 and is fixedly connected to the rotating shaft 13. When the long semi-axis of the rotating plate 22 rotates to a vertical state, the rotating plate 22 presses the sealing sleeve 20, so that the sealing sleeve 20 presses the spring 21 at the bottom thereof to contract. At this time, the sealing sleeve 20 moves along The discharge section 17 moves downward to expose the water inlet 18 and the water outlet 19 on both sides of the discharge section 17, and external clean water can flow into the discharge section 17 through the water inlet 18. When the short semi-axis of the rotating plate 22 rotates to a vertical state, the sealing sleeve 20 slides upward under the restoring force of the spring 21, and the water inlet 18 and the water outlet 19 are completely sealed, so as to prevent the clean water inside the discharge section 17 from splashing out through the water inlet 18 and the water outlet 19 opened on both sides of the discharge section 17 when the impeller 15 rotates, causing the problem of low water outlet efficiency at the water outlet flange 16, thereby greatly improving the water outlet efficiency of the water outlet flange 16.

[0024] Furthermore, a water inlet flange 12 is provided on one side of the water pump housing 11 . The water inlet flange 12 is connected to the inside of the water pump housing 11 , and an external thread for screwing a water pipe is provided on the outer surface of the end of the water inlet flange 12 away from the water pump housing 11 .

[0025] In this embodiment, a water inlet flange 12 is provided at one end of the water pump housing 11. The water inlet flange 12 is connected to the interior of the water pump housing 11 and is used to introduce external clean water into the water pump housing 11. An external thread for screwing a water pipe is provided on the outer surface of the water inlet flange 12 away from the end of the water pump housing 11, which is used to connect the water inlet flange 12 to an external water pipe.

[0026] Furthermore, there are multiple impellers 15 , with every two impellers 15 forming a group. Each group of impellers 15 is respectively fixedly connected to the upper and lower sides of the rotating shaft 13 , and the multiple groups of impellers 15 are equidistantly arranged along the length direction of the rotating shaft 13 .

[0027] In this embodiment, there are multiple impellers 15, and every two impellers 15 form a group. Each group of impellers 15 is fixedly connected to the upper and lower sides of the rotating shaft 13, respectively. The multiple groups of impellers 15 are arranged equidistantly along the length direction of the rotating shaft 13. The impellers 15 are driven to rotate by the rotating shaft 13. The centrifugal force generated by the rotation of the impellers 15 discharges the clean water inside the water pump housing 11 through the water outlet flange 16, thereby achieving the purpose of water supply.

[0028] Furthermore, a plurality of connecting plates 14 are provided at the bottom of the impeller 15 . The impellers 15 correspond to the connecting plates 14 one by one and are fixedly connected to the outer surface of the rotating shaft 13 through the connecting plates 14 .

[0029] In this embodiment, a plurality of connecting plates 14 are provided at the bottom of the impeller 15, and the plurality of impellers 15 correspond one-to-one to the plurality of connecting plates 14, and are fixedly connected to the outer surface of the rotating shaft 13 through the connecting plates 14. The impeller 15 is fixedly connected to the rotating shaft 13 through the connecting plates 14, so that the rotating shaft 13 can drive the impeller 15 to rotate during the rotation process, thereby generating a larger centrifugal force.

[0030] Furthermore, the bottom of the water outlet flange 16 passes through the water pump housing 11 through a circular through hole opened at the top of the water pump housing 11 , and is fixedly connected to the discharge section 17 .

[0031] In this embodiment, the bottom of the water outlet flange 16 passes through the water pump housing 11 through a circular through hole opened at the top of the water pump housing 11, and is fixedly connected to the discharge section 17, so that the centrifugal force generated by the impeller 15 inside the discharge section 17 when rotating will throw the clean water inside the discharge section 17 out through the water outlet flange 16, thereby achieving the purpose of supplying water through the water outlet flange 16.

[0032] Furthermore, the interior of the discharge section 17 is hollow, and a water inlet 18 and a water outlet 19 are respectively provided on the left and right sides of the discharge section 17 . The water inlet 18 and the water outlet 19 are symmetrically distributed along the central axis of the discharge section 17 .

[0033] In this embodiment, the interior of the spitting section 17 is hollow, and a water inlet 18 and a water outlet 19 are respectively provided on the left and right sides of the spitting section 17. The water inlet 18 and the water outlet 19 are symmetrically distributed along the central axis of the spitting section 17. The water inlet 18 and the water outlet 19 are provided on both sides of the spitting section 17 to connect the multiple spitting sections 17 to each other so that the multiple spitting sections 17 can spit water synchronously.

[0034] Furthermore, the rotating shaft 13 penetrates the discharging section 17 through a water inlet 18 and a water outlet 19 provided on the discharging section 17 , and is rotatably connected to the discharging section 17 .

[0035] In this embodiment, the rotating shaft 13 penetrates the discharging section 17 through the water inlet 18 and the water outlet 19 opened on the discharging section 17, and is rotatably connected with the discharging section 17, so that part of the impeller 15 on the rotating shaft 13 falls into the inside of the discharging section 17, and the clean water inside the discharging section 17 is discharged through the water outlet flange 16 by the rotation of the impeller 15 inside the discharging section 17.

[0036] Furthermore, slide grooves are provided on the left and right sides of the sealing sleeve 20 , and downwardly recessed notches are provided on the front and rear sides of the sealing sleeve 20 . The slide grooves are clamped on both sides of the rotating shaft 13 and are slidably connected with the rotating shaft 13 .

[0037] In this embodiment, the sealing sleeve 20 is provided with slide grooves on the left and right sides, and the sealing sleeve 20 is provided with recessed notches on the front and rear sides. The slide grooves are clamped on the two sides of the rotating shaft 13 and are slidably connected with the rotating shaft 13, so that the sealing sleeve 20 can slide up and down along the height direction of the discharge section 17. When the sealing sleeve 20 slides upward, the water inlet 18 and the water outlet 19 on the left and right sides of the discharge section 17 can be sealed to prevent the clean water inside the discharge section 17 from leaking out, thereby greatly improving the water outlet efficiency of the water outlet flange 16.

[0038] Furthermore, the rotating plate 22 is an elliptical plate-shaped structure, and the rotating plate 22 is sleeved on the rotating shaft 13 located inside the sealing sleeve 20 and fixedly connected to the rotating shaft 13 .

[0039] In the present embodiment, the rotating plate 22 is an elliptical plate-shaped structure, and the rotating plate 22 is sleeved on the rotating shaft 13 located inside the sealing sleeve 20 and is fixedly connected to the rotating shaft 13. When the long semi-axis of the rotating plate 22 rotates to a vertical state, the rotating plate 22 presses the sealing sleeve 20, so that the sealing sleeve 20 compresses the spring 21 at its bottom to contract. At this time, the sealing sleeve 20 moves downward along the spitting section 17, exposing the water inlet 18 and the water outlet 19 on both sides of the spitting section 17, and external clean water can flow into the inside of the spitting section 17 through the water inlet 18. When the short semi-axis of the rotating plate 22 rotates to a vertical state, the sealing sleeve 20 slides upward under the action of the restoring force of the spring 21, and the water inlet 18 and the water outlet 19 are completely sealed, so as to prevent the clean water inside the spitting section 17 from splashing out through the water inlet 18 and the water outlet 19 opened on both sides of the spitting section 17 when the impeller 15 rotates, causing the problem of low water outlet efficiency at the water outlet flange 16.

[0040] Furthermore, one end of the rotating shaft 13 away from the water inlet flange 12 passes through the water pump housing 11 and is fixedly connected to the output end of the external motor.

[0041] In this embodiment, one end of the rotating shaft 13 away from the water inlet flange 12 passes through the water pump housing 11 and is fixedly connected to the output end of the external motor. The external motor is electrically connected to the external power supply and rotates to drive the rotating shaft 13, thereby driving the impeller 15 fixedly connected to the rotating shaft 13 to rotate, generating centrifugal force to discharge the clean water inside the discharge section 17.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal single-suction multi-stage segmental centrifugal pump, comprising a water pump housing (11), a rotating shaft (13), an impeller (15), a water outlet flange (16), a discharge section (17), a sealing sleeve (20), a spring (21) and a rotating plate (22), characterized in that: The rotating shaft (13) passes through the water pump housing (11) and is rotatably connected to the water pump housing (11); the impeller (15) is fixedly connected to the outer surface of the rotating shaft (13); the discharge section (17) passes through the water pump housing (11) and is fixedly connected to the water pump housing (11); the sealing sleeve (20) is fixedly connected to the top of the spring (21); the bottom of the spring (21) is fixedly connected to the inner bottom surface of the discharge section (17); the rotating plate (22) is located inside the discharge section (17); the rotating plate (22) is an elliptical plate structure; the rotating plate (22) is sleeved on the rotating shaft (13) ) and is fixedly connected to the rotating shaft (13); the bottom of the water outlet flange (16) passes through the water pump housing (11) through a circular through hole opened at the top of the water pump housing (11) and is fixedly connected to the discharge section (17); when the long semi-axis of the rotating plate (22) rotates to a vertical state, the rotating plate (22) presses the sealing sleeve (20), so that the sealing sleeve (20) compresses the spring (21) at its bottom to contract, and at this time the sealing sleeve (20) moves downward along the discharge section (17), exposing the water inlet (18) and the water outlet (19) on both sides of the discharge section (17), and external clean water can flow into the discharge section (17) through the water inlet (18).

2. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 1, characterized in that: A water inlet flange (12) is provided on one side of the water pump housing (11), the water inlet flange (12) is communicated with the interior of the water pump housing (11), and an external thread for screwing a water pipe is provided on the outer surface of one end of the water inlet flange (12) away from the water pump housing (11).

3. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 1, characterized in that: There are a plurality of impellers (15), with each two impellers (15) forming a group. Each group of impellers (15) is respectively fixedly connected to the upper and lower sides of the rotating shaft (13). The plurality of groups of impellers (15) are arranged equidistantly along the length direction of the rotating shaft (13).

4. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 3, characterized in that: A plurality of connecting plates (14) are provided at the bottom of the impeller (15), and the plurality of impellers (15) correspond to the plurality of connecting plates (14) one by one, and are fixedly connected to the outer surface of the rotating shaft (13) through the connecting plates (14).

5. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 1, characterized in that: The interior of the discharge section (17) is hollow, and a water inlet (18) and a water outlet (19) are respectively provided on the left and right sides of the discharge section (17), and the water inlet (18) and the water outlet (19) are symmetrically distributed along the central axis of the discharge section (17).

6. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 5, characterized in that: The rotating shaft (13) penetrates the discharging section (17) through a water inlet (18) and a water outlet (19) provided on the discharging section (17), and is rotatably connected to the discharging section (17).

7. A horizontal single-suction multi-stage segmental centrifugal pump according to claim 1, characterized in that: The sealing sleeve (20) is provided with sliding grooves on the left and right sides, and the sealing sleeve (20) is provided with downwardly recessed notches on the front and rear sides. The sliding grooves are clamped on the two sides of the rotating shaft (13) and are slidably connected to the rotating shaft (13).

8. A horizontal single-suction multi-stage segmental centrifugal pump as claimed in claim 2, characterized in that: One end of the rotating shaft (13) away from the water inlet flange (12) passes through the water pump housing (11) and is fixedly connected to the output end of the external motor.

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