Auxiliary device for starting centrifugal pump

Abstract

According to the technical scheme, the centrifugal pump starting auxiliary device comprises a centrifugal pump, a water inlet of the centrifugal pump is connected with the lower portion of the side face of a sealing box body through a centrifugal pump water inlet pipe, a water tank water inlet pipe is arranged on the upper portion of the side face of the sealing box body, and the end, away from the sealing box body, of the water tank water inlet pipe is connected to a position to be pumped. A water outlet of the centrifugal pump is connected with a centrifugal pump water outlet pipe, and a water inlet of the centrifugal pump is lower than the lowest position of the sealing box body. The water pumping device has the advantages that the sealed box body is filled with water to form a vacuum environment, when the centrifugal pump is started, the water in the sealed box body is filled into the centrifugal pump through gravity difference, the water level in the box body drops, water at the position where water is to be pumped enters the water tank under the action of atmospheric pressure, the centrifugal pump continues to pump water from the box body, and circulation is formed; the device has the advantages of small hydraulic loss, high centrifugal pump efficiency, simplicity and convenience in starting and easiness in control.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water pumping and water supply equipment, especially relates to a centrifugal pump starting auxiliary device. BACKGROUND

[0002] The starting of the centrifugal pump usually adopts manual water adding or vacuum pump auxiliary water feeding to achieve the purpose of water pumping and water discharging of the centrifugal pump. The prior art in the above has the following defects: manual water adding needs to be repeatedly carried out before each starting, and the time and labor are consumed in stopping and restarting; vacuum pump auxiliary water feeding needs to be additionally configured with a set of auxiliary equipment, and the operation is relatively complex; and whether the manual water adding or the vacuum pump auxiliary water feeding is influenced by the water suction elevation of the centrifugal pump and the performance of the centrifugal pump, the performance of the water pump is difficult to efficiently play to a certain extent. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a centrifugal pump starting auxiliary device, and the technical scheme is as follows: a centrifugal pump is included, the water inlet of the centrifugal pump is connected with the lower part of the side of a sealed box through a centrifugal pump water inlet pipe, the upper part of the side of the sealed box is provided with a water tank water inlet pipe, one end of the water tank water inlet pipe away from the sealed box is connected to a water pumping place, the water outlet of the centrifugal pump is connected with a centrifugal pump water outlet pipe, and the water inlet of the centrifugal pump is lower than the lowest part of the sealed box.

[0004] As a preferred scheme, the top of the sealed box is provided with a water adding sealing valve, and the side wall of the sealed box is provided with a drainage sealing valve.

[0005] As a preferred scheme, the side wall of the sealed box is further provided with a vacuum water level display pipe, and the top of the vacuum water level display pipe is lower than the top of the sealed box.

[0006] As a preferred scheme, the side wall of the sealed box is fixedly provided with a working ladder.

[0007] As a preferred scheme, the top of the sealed box is provided with a plurality of lifting lugs.

[0008] As a preferred scheme, the sealed box and the centrifugal pump are arranged on a water tank foundation.

[0009] As a preferred scheme, the bottom of the sealed box is provided with a plurality of box legs, and the sealed box is arranged on the water tank foundation through the box legs.

[0010] As a preferred scheme, the box legs are fixedly connected through leg tie rods.

[0011] As a preferred scheme, the sealed box and the box legs are fixedly connected through a leg upper pad plate.

[0012] As a preferred solution, the box leg is fixedly connected with the water tank foundation through a leg lower base plate.

[0013] The utility model discloses the beneficial effect that:

[0014] The device forms the vacuum environment through filling water in the sealed box body, and the water in the sealed box body is filled into the centrifugal pump through the gravity difference when the centrifugal pump starts, the water level in the box body drops, and the water in the water pumping place enters the water tank under the action of atmospheric pressure, the centrifugal pump continues to pump water from the box body, and circulation is formed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of front view angle of the utility model.

[0016] Figure 2 It is the structure schematic diagram of right side view angle of the utility model.

[0017] Figure 3 It is the structure schematic diagram of left side view angle of the utility model.

[0018] Figure 4 It is the structure schematic diagram of the drainage sealing valve and the vacuum water level display pipe in the utility model.

[0019] Figure 5 It is the structure schematic diagram of the water tank foundation and the box leg in the utility model.

[0020] In the drawing: 1, water tank inlet pipe; 2, centrifugal pump inlet pipe; 3, centrifugal pump outlet pipe; 4, sealed box body; 5, box leg; 6, leg tie rod; 7, leg lower base plate; 8, leg upper base plate; 9, operation ladder; 10, lifting lug; 11, water filling sealing valve; 12, drainage sealing valve; 13, water tank foundation; 14, vacuum water level display pipe; 15, centrifugal pump. DETAILED DESCRIPTION

[0021] The utility model will be described in further detail below according to the drawings and specific embodiments.

[0022] EMBODIMENT

[0023] As Figures 1-5The centrifugal pump starting auxiliary device shown in the application comprises a centrifugal pump 15, a water inlet of the centrifugal pump 15 is connected with a lower part of a side of a sealed box 4 through a centrifugal pump water inlet pipe 2, a water tank water inlet pipe 1 is arranged on an upper part of the side of the sealed box 4, one end of the water tank water inlet pipe 1 away from the sealed box 4 is connected to a place to be pumped, a water outlet of the centrifugal pump 15 is connected with a centrifugal pump water outlet pipe 3, the water inlet of the centrifugal pump 15 is lower than the lowest part of the sealed box 4, so that a height difference exists between the centrifugal pump 15 and the sealed box 4, which is beneficial to the water in the sealed water tank 4 entering the centrifugal pump 15.

[0024] Further, a water adding sealed valve 11 is arranged on the top of the sealed box 4, the water adding sealed valve 11 is used to add water and exhaust in the sealed box 4, and is closed in use to ensure the sealing of the sealed box 4, a drainage sealed valve 12 is arranged on the side wall of the sealed box 4, the drainage sealed valve 12 is used to drain the water in the sealed box 4 in maintenance, and is closed in use to ensure the sealing of the sealed box 4.

[0025] Further, a vacuum water level display pipe 14 is further arranged on the side wall of the sealed box 4, the top of the vacuum water level display pipe 14 is lower than the top of the sealed box 4, the vacuum water level display pipe 14 is used to monitor the water level in the sealed box 4, so as to monitor whether the sealing of the sealed box 4 is good.

[0026] Further, a working ladder 9 is fixedly arranged on the side wall of the sealed box 4, the working ladder 9 is used to facilitate water adding and exhaust.

[0027] Further, a plurality of lifting lugs 10 are arranged on the top of the sealed box 4.

[0028] Further, the sealed box 4 and the centrifugal pump 15 are arranged on a water tank foundation 13.

[0029] Further, a plurality of box legs 5 are arranged on the bottom of the sealed box 4, and the sealed box 4 is arranged on the water tank foundation 13 through the box legs 5.

[0030] Further, the box legs 5 are fixedly connected through leg tie rods 6, and the leg tie rods 6 increase the bearing capacity.

[0031] Further, the sealed box 4 and the box legs 5 are fixedly connected through upper leg base plates 8, so as to reduce the pressure of the contact surface and enhance the stability of the device.

[0032] Further, the box legs 5 and the water tank foundation 13 are fixedly connected through lower leg base plates 7, so as to reduce the pressure of the contact surface and enhance the stability of the device.

[0033] The use process of the device is as follows:

[0034] The water tank inlet pipe 1 is blocked from the end away from the sealed box 4 to ensure the sealing, the workers climb the working ladder 9 to add water into the sealed box 4 until the sealed box 4 is filled with water without air, the water adding sealing valve 11 is closed, and the blocking of the water tank inlet pipe 1 is removed. When the centrifugal pump 15 needs to be started to supply water, the centrifugal pump 15 is only needed to be opened, the water in the sealed box 4 enters the centrifugal pump through the gravity difference between the water inlet of the centrifugal pump 15, the sealed box 4 is in vacuum, the water source is pressed into the sealed box 4 through the water tank inlet pipe 1 due to the atmospheric pressure, the centrifugal pump 15 discharges the water, the water source also continuously press the water into the sealed box 4, and the circulation is formed. As long as the sealed box 4 is filled with water, the centrifugal pump 15 does not need to use an additional vacuum pump or manually add water when starting. When maintenance is needed, the water in the sealed box 4 can be discharged through the drainage sealing valve 12 to perform the maintenance.

Claims

1. A centrifugal pump start-up aid device comprising a centrifugal pump (15), characterized in that, The water inlet of the centrifugal pump (15) is connected with the lower part of the side of the sealing box (4) through the centrifugal pump water inlet pipe (2), the upper part of the side of the sealing box (4) is provided with the water tank water inlet pipe (1), the end of the water tank water inlet pipe (1) away from the sealing box (4) is connected to the water to be pumped, the water outlet of the centrifugal pump (15) is connected with the centrifugal pump water outlet pipe (3), and the water inlet of the centrifugal pump (15) is lower than the lowest part of the sealing box (4).

2. A centrifugal pump priming aid according to claim 1, wherein, The top of the sealing box (4) is provided with the water adding sealing valve (11), and the side wall of the sealing box (4) is provided with the drainage sealing valve (12).

3. A centrifugal pump priming aid according to claim 1, wherein, The side wall of the sealing box (4) is also provided with the vacuum water level display pipe (14), and the top of the vacuum water level display pipe (14) is lower than the top of the sealing box (4).

4. A centrifugal pump priming aid according to claim 1, wherein, The side wall of the sealing box (4) is fixedly provided with the operation ladder (9).

5. A centrifugal pump priming aid according to claim 1, wherein, The top of the sealing box (4) is provided with a plurality of lifting lugs (10).

6. A centrifugal pump priming aid according to claim 1, wherein, The sealing box (4) and the centrifugal pump (15) are arranged on the water tank foundation (13).

7. A centrifugal pump priming aid according to claim 6, wherein, The bottom of the sealing box (4) is provided with a plurality of box legs (5), and the sealing box (4) is arranged on the water tank foundation (13) through the box legs (5).

8. A centrifugal pump priming aid according to claim 7, wherein, The box legs (5) are fixedly connected through the leg tie rods (6).

9. A centrifugal pump priming aid according to claim 7, wherein, The sealing box (4) and the box legs (5) are fixedly connected through the leg upper pads (8).

10. A centrifugal pump priming aid according to claim 7, wherein, The box legs (5) and the water tank foundation (13) are fixedly connected through the leg lower pads (7).

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