Single-stage double-suction axially split volute centrifugal pump

Abstract

The single-stage double-suction axially split volute centrifugal pump comprises a pump machine, water inlet ends are fixedly connected to the side walls of the two sides, close to the bottom, of the pump machine, a water outlet end is fixedly connected to the middle of the side wall of one end of the pump machine, and a constant flow pipe is detachably connected to the water inlet end through the end, away from the pump machine, of the water inlet end. The water inlet end is in contact with a water source through the constant flow pipe, the inner top of the constant flow pipe is rotationally connected with an adjusting baffle, the outer ring wall of the adjusting baffle is attached to the inner wall of the constant flow pipe, and the adjusting baffle is of an inclined structure. When water passes through the constant flow pipes, the distance between the adjusting baffles and the inner walls of the constant flow pipes is controlled by adjusting the inclination angles of the adjusting baffles, so that the water passing amount is adjusted, the adjusting baffles in the two constant flow pipes are correspondingly adjusted according to the water source amount of the water inlet ends, and it is guaranteed that the water inlet amounts of the two water inlet ends are the same; therefore, the situation that the operation stability of the pump machine is affected by the difference of the water inflow is avoided, and the water outflow smoothness is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of constant flow structure of pump body, specifically to a single-stage double-suction split-case centrifugal pump. Background Technology

[0002] A single-stage double-suction pump is a centrifugal pump with two inlets and one outlet. Because it has two inlets that can simultaneously draw water, it can increase the flow rate that the pump can handle at the same time, improve the overall operating efficiency, and is widely used in urban areas, mines, water conservancy projects, power plants, factories and farmland.

[0003] Because water enters from both inlets simultaneously, different flow rates at both ends will affect the normal operation of the impeller and the water output. However, in actual use, it is difficult to ensure that the water volume at both ends is the same, which leads to different inlet volumes at both ends, thus affecting the pump. Therefore, a single-stage double-suction split-case centrifugal pump is proposed. Utility Model Content

[0004] The technical solution adopted by this utility model to solve the technical problem is: a single-stage double-suction split-case centrifugal pump, including a pump motor, with water inlet ends fixedly connected to both side walls near the bottom of the pump motor, and a water outlet end fixedly connected to the middle of one side wall of the pump motor. The water inlet end is detachably connected to a constant flow tube through its end away from the pump motor, and the water inlet end is in contact with the water source through the constant flow tube. An adjusting baffle is rotatably connected to the top of the constant flow tube, and the outer ring wall of the adjusting baffle is in contact with the inner wall of the constant flow tube. The adjusting baffle has an inclined structure.

[0005] As a preferred technical solution of this utility model, a vertical sleeve is fixedly connected to the top outer wall of the constant flow tube. The vertical sleeve has a hollow structure and a threaded column is rotatably provided inside. The inside of the vertical sleeve is connected to the inside of the constant flow tube, and one end of the threaded column extends into the constant flow tube.

[0006] As a preferred technical solution of this utility model, a motor is detachably connected to the side wall of the vertical sleeve away from the constant flow tube. The output end of the motor is inserted into the vertical sleeve and detachably connected to the top of the threaded column. A lifting collar is externally threaded onto the end of the threaded column located inside the constant flow tube.

[0007] As a preferred technical solution of this utility model, a rotating block is fixedly connected to one end of the lifting collar near the adjusting baffle. Two vertical plates are provided on the side wall opposite to the adjusting baffle and the lifting collar. The rotating block is rotatably connected between the two vertical plates and their opposite side walls through its bottom end.

[0008] As a preferred technical solution of this utility model, the adjusting baffle has two sliding grooves on the side wall opposite to the vertical plate. The two opposite side walls of the sliding groove are provided with side grooves. The bottom end of the vertical plate is fixedly connected to a slider, which is slidably connected in the sliding groove. The two side walls of the slider are fixedly connected to cylindrical protrusions, which are slidably connected in the side grooves. The slider rotates in the sliding groove through the protrusions.

[0009] This utility model has the following advantages: An adjusting baffle is connected inside the constant flow tube. When water flows through the constant flow tube, the distance between the adjusting baffle and the inner wall of the constant flow tube is controlled by adjusting the tilt angle of the adjusting baffle, thereby adjusting the water flow rate. The adjusting baffles in the two constant flow tubes are adjusted according to the water source at the inlet end to ensure that the water inlet at the two inlet ends is the same, thereby avoiding the impact of the difference in water inlet on the stability of the pump operation and ensuring the smoothness of water output.

[0010] The motor drives the threaded column to rotate, which in turn drives the lifting collar to rise and fall along the threaded column via the threaded connection. This, in turn, moves the adjusting baffle, thereby adjusting the tilt angle of the adjusting baffle and thus adjusting the water flow rate in the constant flow pipe. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of a half-section of a constant current tube according to a preferred embodiment of the present invention;

[0013] Figure 3 This is an exploded view of the adjusting baffle according to a preferred embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 1. Pump; 2. Inlet; 3. Outlet; 4. Constant flow tube; 5. Vertical sleeve; 6. Motor; 7. Threaded column; 8. Lifting collar; 9. Vertical plate; 10. Adjusting baffle; 11. Rotating block; 12. Sliding block; 13. Slide groove; 14. Side groove. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Please refer to the following: Figure 1-3This utility model discloses a single-stage double-suction split-case centrifugal pump, including a pump 1. Both sides of the pump 1 near the bottom are fixedly connected to water inlet 2. One side wall of the pump 1 is fixedly connected to water outlet 3. The water inlet 2 is detachably connected to a constant flow tube 4 at the end away from the pump 1, and the water inlet 2 is in contact with the water source through the constant flow tube 4. An adjusting baffle 10 is rotatably connected to the top of the constant flow tube 4. The outer ring wall of the adjusting baffle 10 is in contact with the inner wall of the constant flow tube 4. The adjusting baffle 10 has an inclined structure.

[0017] A vertical sleeve 5 is fixedly connected to the top outer wall of the constant flow tube 4. The vertical sleeve 5 is hollow and has a threaded column 7 rotatably installed inside. The interior of the vertical sleeve 5 is connected to the interior of the constant flow tube 4. One end of the threaded column 7 extends into the constant flow tube 4. A motor 6 is detachably connected to the side wall of the end of the vertical sleeve 5 away from the constant flow tube 4. The output end of the motor 6 is inserted into the vertical sleeve 5 and detachably connected to the top of the threaded column 7. A lifting collar 8 is externally threaded onto the end of the threaded column 7 located inside the constant flow tube 4. A rotating block 11 is fixedly connected to the end of the lifting collar 8 near the adjusting baffle 10. Two vertical plates 9 are provided on the side wall opposite to the adjusting baffle 10 and the lifting collar 8. The rotating block 11 is rotatably connected between the two vertical plates 9 on the side wall opposite to each other through its bottom end.

[0018] The technical effect of this solution is as follows: When water enters the constant flow tube 4, the starting motor 6 drives the threaded column 7 to rotate, and through the threaded connection, drives the lifting collar 8 to move up and down, thereby causing the adjusting baffle 10 to open and close. By controlling the opening angle of the adjusting baffle 10, the flow rate of the constant flow tube 4 is controlled, thereby ensuring that the water inflow at the two inlet ends 2 is equal, avoiding the impact on the pump 1 due to the difference in the two inflow rates. Furthermore, by adjusting the flow rate, the water consumption at both ends can be ensured to be the same, thereby preventing the water source at one end from being depleted too early, causing the inlet end 2 to run dry and affecting the normal water inflow at the other end and the water outflow at the outlet end 3.

[0019] Two sliding grooves 13 are provided on the side wall opposite to the vertical plate 9 of the adjusting baffle 10. Side grooves 14 are provided on the opposite side walls of the sliding grooves 13. A slider 12 is fixedly connected to the bottom end of the vertical plate 9. The slider 12 is slidably connected in the sliding groove 13. Cylindrical protrusions are fixedly connected to the side walls of the slider 12, and the protrusions are slidably connected in the side grooves 14. The slider 12 rotates in the sliding groove 13 through the protrusions.

[0020] The technical effect of this solution is as follows: To ensure the smooth opening and closing of the adjusting baffle 10, a slide groove 13 is opened on one side of the adjusting baffle 10. The vertical plate 9 is rotatably connected to the slide groove 13 by the slider 12. Since the slider 12 itself can rotate in the slide groove 13, when the adjusting baffle 10 is opened and closed, the slider 12 will rotate along the slide groove 13 and slide at the same time, ensuring the smooth opening and closing of the slide groove 13, avoiding motion interference, and ensuring stable regulation and control of the flow rate in the constant flow tube 4.

[0021] Specifically, when using this utility model, the pump 1 is started to draw water from both sides through the inlet end 2 and the constant flow pipe 4. The motor 6 drives the threaded column 7 to rotate, and through the threaded connection, it drives the lifting collar 8 to move up and down. According to the water conditions on both sides, the adjusting baffle 10 is adjusted to the corresponding unfolding angle to ensure that the water inflow at both ends is the same. The unfolding angle of the adjusting baffle 10 is adjusted in real time to ensure that the water consumption of both sides is the same, so as to avoid the pump 1 running dry due to one side being exhausted too early, which would affect the overall stability of operation. By adjusting the baffle 10, the water inflow on both sides can be kept constant, and the impact on the pump 1 caused by the different water inflow on both sides can be eliminated.

[0022] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0023] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A single-stage, double-suction, split-case centrifugal pump, comprising a pump motor (1), characterized in that, The pump (1) has a water inlet (2) fixedly connected to both sides of the bottom. The pump (1) has a water outlet (3) fixedly connected to the middle of one side wall. The water inlet (2) is detachably connected to a constant flow tube (4) through the end away from the pump (1). The water inlet (2) is in contact with the water source through the constant flow tube (4). An adjusting baffle (10) is rotatably connected to the top of the constant flow tube (4). The outer ring wall of the adjusting baffle (10) is in contact with the inner wall of the constant flow tube (4). The adjusting baffle (10) is an inclined structure.

2. The single-stage double-suction split-case centrifugal pump as described in claim 1, characterized in that, The top outer wall of the constant flow tube (4) is fixedly connected to a vertical sleeve (5). The vertical sleeve (5) is a hollow structure and has a threaded column (7) rotatably installed inside. The inside of the vertical sleeve (5) is connected to the inside of the constant flow tube (4). One end of the threaded column (7) extends into the constant flow tube (4).

3. A single-stage double-suction split-case centrifugal pump as described in claim 2, characterized in that, The vertical sleeve (5) is detachably connected to a motor (6) on the side wall away from the constant flow tube (4). The output end of the motor (6) is inserted into the vertical sleeve (5) and detachably connected to the top of the threaded column (7). The threaded column (7) is externally threaded with a lifting collar (8) at one end inside the constant flow tube (4).

4. A single-stage double-suction split-case centrifugal pump as described in claim 3, characterized in that, The lifting collar (8) is fixedly connected to a rotating block (11) at one end near the adjusting baffle (10). Two vertical plates (9) are provided on the side wall opposite to the lifting collar (8) of the adjusting baffle (10). The rotating block (11) is rotatably connected between the two vertical plates (9) on the side wall opposite to each other through its bottom end.

5. A single-stage double-suction split-case centrifugal pump as described in claim 1, characterized in that, The adjusting baffle (10) has two sliding grooves (13) on the side wall opposite to the vertical plate (9). The two opposite side walls of the sliding groove (13) are provided with side grooves (14). The bottom end of the vertical plate (9) is fixedly connected to a slider (12). The slider (12) is slidably connected in the sliding groove (13). The two side walls of the slider (12) are fixedly connected to cylindrical protrusions, and the protrusions are slidably connected in the side grooves (14). The slider (12) rotates in the sliding groove (13) through the protrusions.

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