Pump shell for submersible pump

Abstract

The pump shell for the submersible pump comprises a shell body, a rotating groove is formed in the circumferential inner wall of the shell body, a rotating ring is rotationally connected into the rotating groove, a plurality of spiral flow guide plates are welded to the circumferential inner wall of the rotating ring, a lower cover is welded to the bottom of the rotating ring, and a plurality of spiral flow guide grooves are formed in the circumferential inner wall of the lower cover. According to the flow guide shell, the rotatable rotating ring and the lower cover are arranged, rotating water flow can drive the rotating ring and the lower cover to rotate together, and therefore force unloading is conducted on impact of the water flow, protection on the shell is achieved, and the service life of the flow guide shell is prolonged; and by arranging a speed limiting assembly, rotation of the rotating ring can be subjected to resistance, then the rotating speed of the rotating ring is reduced, the situation that the temperature is too high due to the fact that the rotating speed between the rotating ring and the rotating groove is too high is avoided, and the service life of the flow guide shell is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to submersible pump technical field especially submersible pump pump shell. BACKGROUND

[0002] Submersible pump is a kind of deep well water-lifting equipment, including well submersible pump, well submersible pump uses the whole unit to work under water, and underground water is extracted to the ground.

[0003] The pump shell of the common well submersible pump impeller on market is also called flow guide shell, the flow guide shell adopts inner wall with certain flow guiding capacity, however, in the operation process of submersible pump, water rotates at high speed in pump shell simultaneously and can erode the inner surface of pump shell, so that the inner surface of pump shell is damaged, which leads to low service life of pump shell. UTILITY MODEL CONTENTS

[0004] The utility model discloses a submersible pump pump shell to solve the shortcomings in prior art.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] Submersible pump pump shell, including the shell, the circumferential inner wall of shell is equipped with rotating groove, rotating groove is rotatably connected with the rotating ring, the circumferential inner wall of rotating ring is welded with multiple spiral flow guide plates, the bottom of rotating ring is welded with the lower cover, the circumferential inner wall of lower cover is equipped with multiple spiral flow guide grooves, the rotating groove is equipped with the speed limiting assembly that reduces the rotating speed of rotating ring, the circumferential inner wall of shell is welded with the top cover, and the top cover is located above rotating ring.

[0007] As a further scheme of the utility model, the speed limiting assembly includes the annular groove on the circumferential outer wall of rotating ring, the annular groove is bonded with the annular plate, the circumferential outer wall of annular plate is equipped with multiple evenly distributed grooves, the circumferential inner wall of rotating groove is equipped with multiple evenly distributed mounting grooves, the mounting groove is bonded with the elastic ball, and the elastic ball is located in the groove.

[0008] As a further scheme of the utility model, the circumferential inner wall of shell is welded with the limiting ring, and the top of limiting ring is bonded with rubber pad.

[0009] As a further scheme of the utility model, the top of top cover is welded with the insert ring, the bottom of shell circumferential inner wall is welded with the fixing frame, the bottom of fixing frame is equipped with the insertion slot, and the insert ring can be inserted into the insertion slot.

[0010] As a further scheme of the utility model, the top of shell circumferential outer wall is equipped with multiple first threaded holes, the bottom of shell circumferential outer wall is equipped with the same number of second threaded holes as first threaded hole, and first threaded hole and second threaded hole can overlap.

[0011] As a further scheme of the utility model, the top of the circumferential outer wall of the shell is provided with a flow guide surface, and the diameter of the top of the flow guide surface is smaller than the diameter of the bottom.

[0012] As a further scheme of the utility model, the top of the circumferential inner wall of the shell is provided with an internal thread, and the bottom of the circumferential outer wall of the shell is provided with an external thread.

[0013] The utility model has the advantages of:

[0014] 1. The utility model discloses a rotatable rotating ring and lower cover are set up, and the water flow of rotation can drive rotating ring and lower cover to rotate together, thereby unloading the impact of water flow, thereby realizing the protection of the shell, and prolonging the service life of the flow guide shell.

[0015] 2. The utility model discloses a speed limiting assembly, which can slow down the rotation of the rotating ring, avoid the temperature from being too high due to the excessive rotation speed between the rotating ring and the rotating groove, and further prolong the service life of the flow guide shell.

[0016] 3. The utility model discloses a plug ring and a plug groove, which can seal the connection between the two shells when the two shells are connected, and improve the sealing performance of the flow guide shell. DRAWINGS

[0017] Figure 1 The utility model discloses a lower cover and fixing frame structure section view of the pump shell for submersible pump Figure One ;

[0018] Figure 2 The utility model discloses a partial section view structure schematic drawing of the pump shell for submersible pump

[0019] Figure 3 The utility model discloses an enlarged structure schematic drawing of A of the pump shell for submersible pump

[0020] Figure 4 The utility model discloses a partial enlarged structure schematic drawing of the pump shell for submersible pump

[0021] Figure 5 The utility model discloses a three-dimensional structure schematic drawing of the pump shell for submersible pump

[0022] Figure 6 The utility model discloses a lower cover and fixing frame structure section view of the pump shell for submersible pump Figure Two .

[0023] In the figure: 1, shell; 2, flow guide surface; 3, top cover; 4, insert ring; 5, first threaded hole; 6, second threaded hole; 7, rubber pad; 8, limiting ring; 9, rotating ring; 10, annular groove; 11, annular plate; 12, flow guide plate; 13, flow guide groove; 14, lower cover; 15, mounting groove; 16, elastic ball; 17, groove; 18, fixing frame; 19, slot. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Referring to Figures 1-6 , the pump shell for submersible pump comprises a shell 1, a rotating groove is formed in the circumferential inner wall of the shell 1, a rotating ring 9 is rotatably connected in the rotating groove, a plurality of spiral flow guide plates 12 are welded on the circumferential inner wall of the rotating ring 9, a lower cover 14 is welded on the bottom of the rotating ring 9, a plurality of spiral flow guide grooves 13 are formed in the circumferential inner wall of the lower cover 14, a speed limiting assembly for reducing the rotating speed of the rotating ring 9 is arranged in the rotating groove, a top cover 3 is welded on the circumferential inner wall of the shell 1, and the top cover 3 is located above the rotating ring 9. During the operation of the submersible pump, the water flow will first pass through the gap between the lower cover 14 and the impeller, the water flow will be guided into the flow guide plates 12 through the flow guide grooves 13 first, then the water will be guided by the flow guide plates 12, and the rotating water flow will drive the rotating ring 9 and the lower cover 14 to rotate together, so as to unload the impact of the water flow and protect the shell 1, thereby prolonging the service life of the flow guide shell.

[0026] The speed limiting assembly comprises an annular groove 10 formed on the circumferential outer wall of the rotating ring 9, an annular plate 11 is bonded in the annular groove 10, a plurality of evenly distributed grooves 17 are formed in the circumferential outer wall of the annular plate 11, the grooves 17 are ellipsoidal, a plurality of evenly distributed mounting grooves 15 are formed in the circumferential inner wall of the rotating groove, and elastic balls 16 are bonded in the mounting grooves 15 and located in the grooves 17. During the rotation of the rotating ring 9, the rotation of the rotating ring 9 will drive the annular plate 11 to rotate, so that the grooves 17 deform and extrude the elastic balls 16, so that the elastic balls 16 are extruded out of the grooves 17 and enter another groove 17. Since the elastic balls 16 are elastic and the grooves 17 are arc-shaped, the rotation of the rotating ring 9 is resisted, thereby slowing down the rotating speed of the rotating ring 9, avoiding the excessive temperature caused by the excessive rotating speed between the rotating ring 9 and the rotating groove, and further prolonging the service life of the flow guide shell.

[0027] The top of the circumferential inner wall of the shell 1 is provided with an internal thread, the bottom of the circumferential outer wall of the shell 1 is provided with an external thread, the external thread of the bottom of the shell 1 is screwed into the internal thread of the top of another shell 1, so that the two shells 1 are connected, the circumferential inner wall of the shell 1 is welded with a limiting ring 8, the top of the limiting ring 8 is bonded with a rubber pad 7, after the bottom of the upper shell 1 contacts with the rubber pad 7, the upper shell 1 is continued to be screwed, so that a sealed structure is formed between the shell 1 and the limiting ring 8.

[0028] The top of the top cover 3 is welded with a plug ring 4, the bottom of the circumferential inner wall of the shell 1 is welded with a fixing frame 18, the bottom of the fixing frame 18 is provided with a plug slot 19, and the plug ring 4 can be inserted into the plug slot 19, when the two shells 1 are connected, the plug ring 4 is inserted into the plug slot 19, so that the connection between the two shells 1 is sealed, and the sealing performance of the flow guide shell connection is improved.

[0029] The top of the circumferential outer wall of the shell 1 is provided with a plurality of first threaded holes 5, the bottom of the circumferential outer wall of the shell 1 is provided with a same number of second threaded holes 6 as the first threaded holes 5, and the first threaded holes 5 and the second threaded holes 6 can overlap, after the first threaded holes 5 and the second threaded holes 6 overlap and the two shells 1 are sealed, a fixing screw is taken and screwed into the first threaded holes 5 and the second threaded holes 6, so that the two connected shells 1 are fixed, and they are not easy to separate.

[0030] The top of the circumferential outer wall of the shell 1 is provided with a flow guide surface 2, the diameter of the top of the flow guide surface 2 is smaller than the diameter of the bottom, after a plurality of shells 1 are combined, when they are put into the well, the flow guide surface 2 guides the water in the well, so that the water contacts with the shell 1 above it, thereby slowing down the diving of the submersible pump, and when it is lifted, the flow guide surface 2 can guide the water flow, so that the submersible pump is easier to extract.

[0031] Working principle: in the process of the operation of the submersible pump, the water flow first passes through the gap between the lower cover 14 and the impeller, the water flow is guided into the flow guide plate 12 through the flow guide groove 13, and then the water is guided through the flow guide plate 12, the rotating water flow drives the rotating ring 9 to rotate with the lower cover 14, so as to unload the impact of the water flow, thereby protecting the shell 1, in the process of the rotation of the rotating ring 9, the rotation of the rotating ring 9 drives the annular plate 11 to rotate, so that the concave groove 17 extrudes the elastic ball 16 to deform, so as to extrude from the concave groove 17 and enter another concave groove 17, because the elastic ball 16 is elastic, the concave groove 17 is arc-shaped, so that the rotation of the rotating ring 9 is resisted, thereby slowing down the rotation speed of the rotating ring 9, avoiding the temperature being too high due to the too fast rotation speed between the rotating ring 9 and the rotating groove, and improving the service life of the flow guide shell.

[0032] Finally, it should be noted that the skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pump housing for submersible pumps, comprising a housing (1), characterised in that The circumferential inner wall of the shell (1) is provided with a rotating groove, a rotating ring (9) is rotatably connected in the rotating groove, the circumferential inner wall of the rotating ring (9) is fixedly connected with a plurality of spiral guide plates (12), the bottom of the rotating ring (9) is fixedly connected with a lower cover (14), the circumferential inner wall of the lower cover (14) is provided with a plurality of spiral guide grooves (13), the rotating groove is provided with a speed limiting assembly for reducing the rotating speed of the rotating ring (9), and the circumferential inner wall of the shell (1) is fixedly connected with a top cover (3), and the top cover (3) is located above the rotating ring (9).

2. The pump housing for a submersible pump according to claim 1, characterized in that The speed limiting assembly comprises an annular groove (10) provided on the circumferential outer wall of the rotating ring (9), the annular groove (10) is fixedly connected with an annular plate (11), the circumferential outer wall of the annular plate (11) is provided with a plurality of uniformly distributed grooves (17), the circumferential inner wall of the rotating groove is provided with a plurality of uniformly distributed mounting grooves (15), the mounting grooves (15) are fixedly connected with elastic balls (16), and the elastic balls (16) are located in the grooves (17).

3. The pump housing for an immersion pump according to claim 1, characterized in that The circumferential inner wall of the shell (1) is fixedly connected with a limiting ring (8), and the top of the limiting ring (8) is fixedly connected with a rubber pad (7).

4. The pump housing for use in an immersion pump according to claim 1, characterized in that The top of the top cover (3) is fixedly connected with an insertion ring (4), the bottom of the circumferential inner wall of the shell (1) is fixedly connected with a fixing frame (18), the bottom of the fixing frame (18) is provided with an insertion groove (19), and the insertion ring (4) can be inserted into the insertion groove (19).

5. The pump housing for a submersible pump according to claim 4, characterized in that The top of the circumferential outer wall of the shell (1) is provided with a plurality of first threaded holes (5), the bottom of the circumferential outer wall of the shell (1) is provided with a same number of second threaded holes (6) as the first threaded holes (5), and the first threaded holes (5) and the second threaded holes (6) can overlap.

6. The pump housing for a submersible pump according to claim 5, characterized in that The top of the circumferential outer wall of the shell (1) is provided with a guide surface (2), and the diameter of the top of the guide surface (2) is smaller than the diameter of the bottom of the guide surface (2).

7. The pump housing for a submersible pump according to claim 2, characterized by The top of the circumferential inner wall of the shell (1) is provided with an internal thread, and the bottom of the circumferential outer wall of the shell (1) is provided with an external thread.

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