Floating impeller submersible pump body

Abstract

The utility model provides a pump body of a floating type impeller submersible pump, belongs to the field of submersible pumps, and solves the problems that a floating type impeller is too high in rotating speed, and a check ring is easily jacked up in an inclined mode. A water suction chamber is arranged at one end of the pump body, a water outlet chamber is arranged at the other end of the pump body, a spline shaft is mounted at the water suction chamber end of the rotating shaft, a plurality of impeller chambers are arranged in the pump body, impellers and flow guide shells are mounted in the impeller chambers, cover plates are arranged among the impeller chambers, check rings are mounted in the cover plates, and fixing portions are arranged on the flow guide shells. The fixing part is clamped between the impeller chamber and the cover plate, a fixing groove is formed in the flow guide shell, a limiting sleeve is installed in the fixing groove, a first gasket is fixedly connected to the limiting sleeve, and a second gasket is fixedly connected to the impeller. The water pump has the advantages that the limiting sleeve, the first gasket and the second gasket are arranged, when the impeller moves, the first gasket and the second gasket play a role in buffering and are matched with the limiting sleeve to adjust the rotating posture of the impeller, stable operation of the water pump is guaranteed, and the service life of the impeller is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of submersible pumps and relates to a submersible pump body, in particular to a floating impeller submersible pump body. Background Art

[0002] Existing submersible pumps are generally divided into fixed impeller submersible pumps and floating impeller submersible pumps. In floating impeller submersible pumps, the impeller can slide axially relative to the pump shaft. The purpose is to prevent the impeller from getting stuck within the range of motion if there are impurities in the water, as long as they are not too large, and thus causing damage to the water pump, thereby minimizing the trouble of disassembling the water pump and extending the normal use time.

[0003] In a floating impeller submersible pump, a retaining ring is set between two adjacent impellers to limit the impeller. The guide vane of the submersible pump is provided with an annular step for the outer side of the retaining ring to be inserted. However, in actual use, the impeller will be pressed on the inner side of the retaining ring when it moves. Since the contact area between the retaining ring and the impeller is small, when the impeller presses on the retaining ring at a high speed, there is a probability that the retaining ring will be tilted and lifted up, which not only affects the limited position of the impeller, but also causes the guide vane to be subjected to forces in different directions, affecting the operation of the water pump. Utility Model Content

[0004] The utility model aims to solve the above problems existing in the prior art and provides a floating impeller submersible pump body which increases the contact area of ​​the impeller and improves the working stability.

[0005] The utility model can be implemented through the following technical scheme: a floating impeller submersible pump body, including a pump body and a rotating shaft, a water suction chamber is provided at one end of the pump body, a water discharge chamber is provided at the other end of the pump body, a spline shaft is installed at the water suction chamber end of the rotating shaft, a plurality of impeller chambers are provided in the pump body, impellers and guide shells are installed in the impeller chambers, cover plates are provided between the impeller chambers, a fixing part is provided on the guide shell, and the fixing part is clamped between the impeller chambers and the cover plate.

[0006] In the above-mentioned floating impeller submersible pump body, a mounting groove is provided in the cover plate, and a retaining ring is installed in the mounting groove.

[0007] In the above-mentioned floating impeller submersible pump body, an axial hole is provided in the guide shell, a fixing groove is provided in the axial hole, and a limiting sleeve is installed in the fixing groove.

[0008] In the above-mentioned floating impeller submersible pump body, a gasket 1 is installed on the rear end surface of the limiting sleeve, and the gasket 1 is fixedly connected to the limiting sleeve.

[0009] In the above-mentioned floating impeller submersible pump body, a second gasket is installed at the rear end surface of the impeller, and the second gasket is fixedly connected to the impeller.

[0010] In the above-mentioned floating impeller submersible pump body, the gasket 1 and the gasket 2 are made of ceramic material.

[0011] Compared with the prior art, the advantages of the utility model are: by adding a limit sleeve and a gasket, the impeller will contact the gasket 2 while contacting the retaining ring, the retaining ring is difficult to be tilted and lifted up by the cover plate, the gasket 2 buffers the impeller, the limit sleeve is fixed and cooperates with the gasket 2 to limit the displacement of the impeller; the gasket 1 contacts the limit sleeve, which is used for buffering when the impeller moves backward and contacts the guide shell, and at the same time prevents the impeller from contacting the guide shell and wearing, thereby increasing the service life of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the pump body of a floating impeller submersible pump;

[0013] Figure 2 yes Figure 1 Enlarged view of the middle circle A;

[0014] Figure 3 It is a cross-sectional view of the cover plate of the floating impeller submersible pump body;

[0015] Among them, 1. pump body; 11. water suction chamber; 12. water discharge chamber; 2. rotating shaft; 21. spline shaft; 3. impeller chamber; 31. impeller; 32. guide shell; 321. fixing part; 322. shaft hole; 332a, fixing groove; 4. cover plate; 41. installation groove; 5. retaining ring; 6. limiting sleeve; 7. gasket 1; 8. gasket 2. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3 As shown, the utility model can be implemented through the following embodiments: a floating impeller submersible pump body, including a pump body 1 and a rotating shaft 2, a water suction chamber 11 is provided at one end of the pump body 1, and a water discharge chamber 12 is provided at the other end of the pump body 1, a spline shaft 21 is installed at the end of the water suction chamber 11 of the rotating shaft 2, a plurality of impeller chambers 3 are provided in the pump body 1, an impeller 31 and a guide shell 32 are installed in the impeller chamber 3, a cover plate 4 is provided between the impeller chambers 3, a fixing portion 321 is provided on the guide shell 32, and the fixing portion 321 is clamped between the impeller chamber 3 and the cover plate 4.

[0018] The spline shaft 21 is used to smoothly transmit torque to prevent sudden vibration from causing the impeller 31 to rush towards the cover plate 4 and the guide shell 32 when floating, causing wear or even damage to the impeller 31, the guide shell 32 and the cover plate 4; the setting of the fixing part 321 facilitates the assembly of the impeller chamber 3, the cover plate 4 and the guide shell 32, and facilitates subsequent disassembly and replacement, reducing the use of connecting parts; the cover plate 4 is used to limit the displacement of the impeller 31.

[0019] like Figures 1 to 3 As shown, a mounting groove 41 is provided in the cover plate 4, and a retaining ring 5 is installed in the mounting groove 41. The retaining ring 5 is used to limit the displacement of the impeller 31 when the impeller 31 floats, to prevent the impeller 31 from moving too much and contacting the guide shell 32 or the cover plate 4 to cause damage; the mounting groove 41 is used to install and position the retaining ring 5, to prevent the retaining ring 5 from being displaced when contacting the impeller 31.

[0020] like Figure 1 and Figure 2 As shown, a shaft hole 322 is provided in the guide shell 32, a fixing groove 322a is provided in the shaft hole 322, and a limiting sleeve 6 is installed in the fixing groove 322a. The limiting sleeve 6 is used to cooperate with the retaining ring 5 to limit the displacement of the impeller 31, increase the contact area between the impeller 31 and the limiting structure when floating, and increase the contact points, so as to prevent the retaining ring 5 from being lifted and tilted, thereby affecting the operation of the water pump.

[0021] like Figure 1 and Figure 2 As shown, a gasket 7 is installed on the rear end surface of the limiting sleeve 6, and the gasket 7 is fixedly connected to the limiting sleeve 6. The gasket 7 is used to absorb and buffer the force brought by the impeller 31 when the impeller 31 and the limiting sleeve 6 are in contact, so as to prevent the impeller 31 and the limiting sleeve 6 from directly contacting each other and causing wear of both, thereby extending the service life of the impeller 31 and the limiting sleeve 6; the gasket 7 is fixedly connected to the limiting sleeve 6 so that when the rotating shaft 2 rotates, the gasket 7 is fixed, and when the impeller 31 abuts against the gasket 7, it can effectively play a buffering role and reduce its own wear.

[0022] like Figure 1 and Figure 2 As shown, a gasket 2 8 is installed at the rear end surface of the impeller 31, and the gasket 2 8 is fixedly connected to the impeller 31. The gasket 2 8 is used for buffering when the impeller 31 contacts the limiting sleeve 6, and at the same time prevents the impeller 31 from deflecting and directly contacting the guide shell 32 to cause wear, thereby increasing the service life of the impeller 31.

[0023] like Figure 2 As shown, the gasket 1 7 and the gasket 2 8 are made of ceramic material. The ceramic material has excellent thermal shock resistance, can prevent the heat generated during friction from causing the gasket to expand, and effectively buffer; has high compressive strength and long service life; and has a significant sound absorption effect and can absorb the noise generated when the impeller 31 rubs against the gasket 1 7 and the gasket 2 8.

[0024] The working principle of the utility model is as follows: when the water pump is started, the impeller 31 floats along the rotating shaft 2. When the impeller 31 moves forward, the impeller 31 will contact the gasket 1 7 and the retaining ring 5. The gasket 1 7 buffers and transmits force to the limiting sleeve 6, and adjusts the rotational posture of the impeller 31 according to the limiting sleeve 6. The retaining ring 5 is used to bear the force brought by the impeller 31 and limit the displacement of the impeller 31. When the impeller 31 moves backward, the gasket 2 8 fixedly connected to the rear end face of the impeller 31 contacts the limiting sleeve 6. The limiting sleeve 6 limits the impeller 31 and adjusts the rotational posture of the impeller 31 by limiting the gasket 2 8. At the same time, the gasket 2 8 can prevent the impeller 31 from directly contacting the guide shell 32.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0026] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A floating impeller submersible pump body, comprising a pump body (1) and a rotating shaft (2), wherein one end of the pump body (1) is provided with a water suction chamber (11), and the other end of the pump body (1) is provided with a water discharge chamber (12), characterized in that: A spline shaft (21) is installed at the end of the water suction chamber (11) of the rotating shaft (2); a plurality of impeller chambers (3) are arranged in the pump body (1); an impeller (31) and a guide shell (32) are installed in the impeller chamber (3); a cover plate (4) is arranged between the impeller chambers (3); a fixing portion (321) is arranged on the guide shell (32); and the fixing portion (321) is clamped between the impeller chamber (3) and the cover plate (4).

2. A floating impeller submersible pump body according to claim 1, characterized in that: A mounting groove (41) is provided in the cover plate (4), and a retaining ring (5) is installed in the mounting groove (41).

3. A floating impeller submersible pump body according to claim 1, characterized in that: An axial hole (322) is provided in the guide shell (32), a fixing groove (322a) is provided in the axial hole (322), and a limiting sleeve (6) is installed in the fixing groove (322a).

4. A floating impeller submersible pump body according to claim 3, characterized in that: A gasket 1 (7) is installed on the rear end surface of the limiting sleeve (6), and the gasket 1 (7) is fixedly connected to the limiting sleeve (6).

5. A floating impeller submersible pump body according to claim 1, characterized in that: A second gasket (8) is installed at the rear end surface of the impeller (31), and the second gasket (8) is fixedly connected to the impeller (31).

6. A floating impeller submersible pump body according to claim 4, characterized in that: The gasket 1 (7) and the gasket 2 (8) are made of ceramic material.

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