Integrated centrifugal pump support structure

Abstract

The utility model discloses an integrated centrifugal pump support structure which comprises a support body, a water passing channel communicated with a water outlet is formed in the support body, racemization ribs are arranged on the water passing channel at intervals, liquid can flow to the water outlet through the water passing channel in the support body, and by means of the design of the racemization ribs and a gradually-shrunk flow channel, the liquid can flow to the water outlet through the racemization ribs. On one hand, the overall structural strength of the support body can be improved, on the other hand, a good rectification effect can be achieved, accumulation of water vapor is scattered, the water vapor can be better discharged, and then the overall performance of the water pump is improved.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal pumps, in particular to an integrated centrifugal pump bracket structure. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of an impeller. Its basic structure includes an impeller, a pump body, and a motor. Currently, there are integrated centrifugal pumps on the market that integrate the outlet of the pump body into the motor casing. The liquid in the pump body is pressurized by the impeller and then discharged from the outlet on the motor casing, thereby simultaneously cooling the motor. However, in the actual working process, due to the presence of water vapor in the liquid, long-term operation will cause a large amount of water vapor to accumulate inside the pump body, which will in turn affect the overall performance of the pump and needs to be further improved. Utility Model Content

[0003] In order to further and better discharge the water vapor in the pump, the present application provides an integrated centrifugal pump support structure.

[0004] The present application provides an integrated centrifugal pump support structure, which adopts the following technical solution:

[0005] An integrated centrifugal pump support structure comprises a support body, wherein a water passage communicating with a water outlet is provided on the support body, and anti-rotation ribs are arranged at intervals on the water passage.

[0006] Optionally, the water passage is a tapered channel, and the width of the water passage gradually decreases from one side of the water inlet to the other side.

[0007] Optionally, the support body has a flow-through arc surface adjacent to the water passage.

[0008] Optionally, the bracket body is an integrally cast steel structure.

[0009] Optionally, a side of the bracket body facing away from the water inlet has a welding position, and the welding position has a step groove for cooperating with the motor housing.

[0010] Optionally, the center of the bracket body has a center hole, and the center of the bracket body corresponding to the center hole is provided with a mechanical seal chamber, a skeleton oil seal chamber and a bearing chamber in sequence along the axial direction.

[0011] Optionally, a drainage hole is provided on the bracket body, one end of the drainage hole is connected to the central hole, and the other end passes through the surface of the bracket body.

[0012] Optionally, a guide vane fixing position is provided on one side of the bracket body.

[0013] Optionally, a convex ring is convexly provided on the end surface of the bracket body, and a radial sealing groove is provided on the convex ring.

[0014] Optionally, an axial sealing position is formed at a corner between the convex ring and the end surface of the bracket body.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The water passage on the bracket body allows the liquid to flow to the water outlet, and with the help of the anti-rotation ribs and the design of the tapered flow channel, on the one hand, the overall structural strength of the bracket body can be improved, and on the other hand, it can play a good rectifying effect, break up the accumulation of water vapor, so that the water vapor can be better discharged, thereby improving the overall performance of the water pump;

[0017] 2. The bracket body is an integrally cast steel structure, and the mechanical seal chamber and the bearing chamber are processed as one, which solves the problems of concentricity and verticality between the mechanical seal and the bearing chamber;

[0018] 3. The bracket body contains a drainage hole between the mechanical seal chamber and the skeleton oil seal chamber. When the mechanical seal is running at high speed, cooling and lubricating water vapor can be discharged from the drainage hole;

[0019] 4. The bracket body contains radial sealing grooves and axial sealing positions. The pump body achieves double sealing through radial sealing and axial sealing to ensure no leakage;

[0020] 5. The bracket body contains a step groove to form a welding position. During the welding process, the internal support part is deformed. After welding, the concentricity and welding strength can be guaranteed.

[0021] 6. The bracket body contains guide vane fixings, which can ensure that the impeller and guide vane are concentric and the water output of the guide vane is consistent and uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram of an embodiment of the present application.

[0023] Figure 2 It is an end view of an embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view of the embodiment of this embodiment when connected to the motor housing.

[0025] Description of reference numerals:

[0026] 1. Bracket body; 2. Center hole; 3. Water passage; 4. Anti-rotation rib; 5. Motor housing; 6. Water outlet; 7. Flow arc surface; 8. External welding position; 9. Internal welding position; 10. Outer tube; 11. Inner tube; 12. Interlayer; 13. Step groove; 14. Mechanical seal chamber; 15. Skeleton oil seal chamber; 16. Bearing chamber; 17. Drain hole; 18. Guide vane fixing position; 19. Convex ring; 20. Radial sealing groove; 21. Axial sealing position; 22. Threaded fixing hole. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] An integrated centrifugal pump support structure, such as Figure 1 and Figure 2 As shown, it includes a bracket body 1, the center of the bracket body 1 has a center hole 2, the outer periphery of the bracket body 1 corresponding to the center hole 2 has an axially penetrating water passage 3, the water passage 3 is annular, and has a de-rotation rib 4 integrated with the bracket body 1 in the water passage 3, the water passage 3 is used to communicate with the water outlet 6 on the motor housing 5, wherein the water passage 3 is a tapered flow channel, and the opening size of the water passage 3 gradually decreases from the water inlet side to the other side, and in addition, the edge of the bracket body 1 corresponding to the water passage 3 has a flow arc surface 7, so that the liquid in the pump body passes through the flow arc surface 7 to enter the water passage 3 more smoothly and stably.

[0029] In this way, with the help of the design of the de-rotation rib 4 and the tapered flow channel, on the one hand, the overall structural strength of the bracket body 1 can be improved, and the influence of the opening of the water passage 3 on the overall strength of the bracket body 1 can be reduced. On the other hand, it can play a good rectifying effect, break up the accumulation of water vapor, so that the water vapor can be discharged better, thereby improving the overall performance of the water pump. Figure 2 and Figure 3 As shown, a welding position for welding and fixing with the motor housing 5 is provided on the side of the bracket body 1 facing away from the water inlet direction, and a step groove 13 for cooperating with the motor housing 5 is provided at the corresponding welding position of the bracket body 1. In this embodiment, there are two welding positions including an outer welding position 8 and an inner welding position 9. The motor housing 5 has an outer cylinder 10 and an inner cylinder 11. An interlayer 12 for liquid flow is formed between the outer cylinder 10 and the inner cylinder 11. The outer welding position 8 is connected to the outer cylinder 10 and fixed by welding, and the inner welding position 9 is connected to the inner cylinder 11 and fixed by welding. The bracket body 1 contains outer welding positions 8 and inner welding positions 9 with high and low distributions, which are transitionally matched with the outer cylinder 10 and the inner cylinder 11 of the motor. The supporting part is deformed inside during the welding process, and the concentricity can be guaranteed after welding, and the welding strength is guaranteed.

[0030] like Figure 2 and Figure 3As shown, the bracket body 1 is an integrally cast steel structure, through which the output shaft of the central power supply machine of the bracket body 1 passes, and at the same time, a mechanical seal chamber 14, a skeleton oil seal chamber 15 and a bearing chamber 16 are sequentially arranged axially in the bracket body 1, and the mechanical seal chamber 14 and the bearing chamber 16 are processed as one piece to solve the concentricity and verticality problems of the mechanical seal and the bearing chamber 16, and the mechanical seal chamber 14 and the skeleton oil seal chamber 15 are far away from the welding position, which well ensures that the size is not deformed; a drainage hole 17 is opened on the bracket body 1, one end of the drainage hole 17 is connected between the mechanical seal chamber 14 and the skeleton oil seal chamber 15, and the other end radially penetrates the outer surface of the bracket body 1, when the mechanical seal is running at high speed, cooling and lubricating water vapor can be discharged from the drainage hole 17.

[0031] like Figure 2 and Figure 3 As shown, a guide vane fixing position 18 is provided on the end surface of the bracket body 1. In actual use, the end of the guide vane can be connected to the guide vane fixing position 18, which can ensure that the impeller and the guide vane are concentric and the water output of the guide vane is consistent and uniform.

[0032] like Figure 2 and Figure 3 As shown, the end face of the bracket body 1 is provided with an outwardly protruding convex ring 19, and the outer ring of the convex ring 19 has an annular groove to form a radial sealing groove 20. At the same time, an axial sealing position 21 is formed at the corner connection between the convex ring 19 and the bracket body 1. In actual use, sealing rings are installed at both the radial sealing groove 20 and the axial sealing position 21 to achieve double sealing to ensure no leakage.

[0033] like Figure 1 and Figure 2 As shown, threaded fixing holes 22 are opened on the outer circumference of the bracket body 1, and multiple threaded fixing holes 22 are evenly distributed around the circumference. The threaded fixing holes 22 are used to connect and fix with the pump body to ensure the reliable strength of the connection structure.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated centrifugal pump support structure, characterized in that: The invention comprises a support body (1), wherein a water passage (3) connected to a water outlet (6) is provided on the support body (1), anti-rotation ribs (4) are arranged at intervals on the water passage (3), the water passage (3) is a gradually contracting flow channel, and the width of the water passage (3) gradually decreases from one side of the water inlet to the other side, the support body (1) has a center hole (2) at the center, and a mechanical seal chamber (14), a skeleton oil seal chamber (15) and a bearing chamber (16) are arranged in sequence along the axial direction at the center of the support body (1) corresponding to the center hole (2), and a drainage hole (17) is arranged on the support body (1), one end of the drainage hole (17) is connected to the center hole (2), and the other end passes through the surface of the support body (1).

2. The integrated centrifugal pump support structure according to claim 1, characterized in that: The support body (1) has a flow-through arc surface (7) adjacent to the water-through channel (3).

3. The integrated centrifugal pump support structure according to claim 1, characterized in that: The support body (1) is an integrally cast steel structure.

4. The integrated centrifugal pump support structure according to claim 1, characterized in that: The side of the bracket body (1) facing away from the water inlet has a welding position, and the welding position has a step groove (13) for matching with the motor housing (5).

5. The integrated centrifugal pump support structure according to claim 1, characterized in that: A guide vane fixing position (18) is provided on one side of the support body (1).

6. The integrated centrifugal pump support structure according to claim 1, characterized in that: A convex ring (19) is convexly provided on the end surface of the bracket body (1), and a radial sealing groove (20) is provided on the convex ring (19).

7. The integrated centrifugal pump support structure according to claim 6, characterized in that: The convex ring (19) and the corner of the end surface of the bracket body (1) form an axial sealing position (21).

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