Connecting structure for water outlet section and shell of deep-well pump

Abstract

The utility model belongs to the technical field of deep-well pumps, in particular to a connecting structure of a water outlet section and a shell of a deep-well pump, which comprises the shell and the water outlet section, the outer side wall of the water outlet section is concave inwards to form a first annular groove, the shell is sleeved outside the water outlet section, and an inner convex ring is formed at the first annular groove through a rolling rib. The inner surface of the inner convex ring is tightly attached to the outer surface of the first annular groove. The water outlet joint is convenient to assemble, and the sealing effect between the water outlet joint and the shell is good.

Description

Technical field:

[0001] The utility model belongs to the technical field of deep well pumps, in particular to a connection structure between a water outlet joint and a shell of a deep well pump. Background technology:

[0002] A deep well pump is a pump that is immersed in a groundwater well to extract and transport water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment.

[0003] The deep well pump includes a casing, a water inlet section, a hydraulic component, a water outlet section, and a driving device. The hydraulic component is arranged in the casing and includes multiple sets of guide vanes and impellers. The impeller is driven by the driving device. One end of the casing is connected to the water inlet section, and the other end is connected to the water outlet section.

[0004] The existing water outlet section and the shell are fastened by tightening screws or threaded rods, or the water outlet section and the shell are connected by external threads and internal threads, which have the disadvantages of being inconvenient to install and having a poor sealing effect between the water outlet section and the shell. Summary of the invention:

[0005] The utility model aims to provide a connection structure between a water outlet joint and a shell of a deep well pump, which is convenient to assemble and has a good sealing effect between the water outlet joint and the shell.

[0006] The utility model is achieved in this way:

[0007] A connection structure between a water outlet joint and an outer shell of a deep well pump comprises an outer shell and a water outlet joint, wherein the outer wall of the water outlet joint is concave to form an annular groove one, the outer shell is sleeved outside the water outlet joint, and an inner convex ring is formed at a place in the annular groove by rolling ribs, and the inner surface of the inner convex ring is in close contact with the outer surface of the annular groove one.

[0008] In the above-mentioned connection structure between the water outlet joint and the outer shell of a deep well pump, the outer wall of the water outlet joint is also provided with an annular groove 2 located on the side of the annular groove 1 away from the outer shell, and an annular protrusion is formed between the annular groove 1 and the annular groove 2 7, the outer shell extends into the annular groove 2, and an outer convex ring tightly attached to the annular protrusion is formed at the annular protrusion by rolling ribs.

[0009] In the above-mentioned connection structure between the water outlet joint of a deep well pump and the outer shell, more than two annular grooves 1 can be provided, and annular groove 2 is provided on the side of the last annular groove 1 away from the outer shell, and an annular protrusion is formed between two adjacent annular grooves 1, and the outer shell forms an outer convex ring at the annular protrusion.

[0010] In the above-mentioned connection structure between the outlet joint of a deep well pump and the housing, the depth d1 of the annular groove 1 is greater than the depth d2 of the annular groove 2.

[0011] In the above-mentioned connection structure between the outlet joint of a deep well pump and the housing, the cross-sections of the annular groove 1 and the annular groove 2 are both arc-shaped, and the cross-sectional radius R1 of the annular groove 1 is greater than the cross-sectional radius R2 of the annular groove 2.

[0012] In the above-mentioned connection structure between the outlet joint of a deep well pump and the housing, the cross section of the annular protrusion is arc-shaped, and the cross-sectional radius R3 of the annular protrusion is between the cross-sectional radius R1 of the annular groove 1 and the cross-sectional radius R2 of the annular groove 2.

[0013] In the above-mentioned connection structure between the water outlet joint and the housing of a deep well pump, the annular protrusion does not protrude from the outer peripheral surface of the water outlet joint close to the housing.

[0014] In the above-mentioned connection structure between the outlet joint of a deep well pump and the shell, the material of the shell is 304 stainless steel, cold-rolled steel or galvanized sheet, and the material of the outlet joint is plastic, cast iron or aluminum alloy.

[0015] The outstanding advantages of the utility model compared with the prior art are:

[0016] 1. The shell of the utility model is formed outside the water outlet joint by rolling ribs, which is convenient to assemble and has high installation precision; and an annular groove 1 is provided on the outer wall of the water outlet joint, and an inner convex ring is formed on the shell, and the inner surface of the inner convex ring is closely attached to the outer surface of the annular groove 1, so that the sealing effect between the water outlet joint and the shell is good;

[0017] 2. The outer side wall of the water outlet joint of the utility model is also provided with an annular groove 2 located on the side of the annular groove 1 away from the outer shell, and an annular protrusion is formed between the annular groove 1 and the annular groove 2. The outer shell extends into the annular groove 2, and an outer convex ring tightly attached to the annular protrusion is formed at the annular protrusion by rolling ribs. A good seal is formed between the annular groove 1 and the inner convex ring, and between the annular protrusion and the outer convex ring. The two seals have a good sealing effect. Description of the drawings:

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 It is a cross-sectional view of the water outlet section of the utility model;

[0020] Figure 3 It is a cross-sectional view of the shell of the utility model.

[0021] Figure numerals: 1, outer shell; 2, water outlet node; 3, annular groove 1; 4, inner convex ring; 5, inner surface; 6, outer surface; 7, annular groove 2; 8, annular protrusion; 9, outer convex ring; 10, outer peripheral surface. Specific implementation method:

[0022] The present invention is further described below with reference to specific embodiments. Figure 1-3 :

[0023] A connection structure between a water outlet joint and a shell of a deep well pump comprises a shell 1 and a water outlet joint 2, wherein the outer wall of the water outlet joint 2 is concave to form an annular groove 3, the shell 1 is sleeved outside the water outlet joint 2, and an inner convex ring 4 is formed at the annular groove 3 by rolling ribs, and the inner surface 5 of the inner convex ring 4 is tightly attached to the outer surface 6 of the annular groove 3.

[0024] like Figure 1-3 As shown, the shell 1 of the utility model is formed outside the water outlet node 2 by rolling, which is easy to assemble and has high installation accuracy; and an annular groove 3 is set on the outer wall of the water outlet node 2, and an inner convex ring 4 is formed on the shell 1, and the inner surface 5 of the inner convex ring 4 is tightly attached to the outer surface 6 of the annular groove 3, so that the sealing effect between the water outlet node 2 and the shell 1 is good.

[0025] For better sealing effect, the outer side wall of the water outlet node 2 is further provided with an annular groove 2 7 located on the side of the annular groove 1 3 away from the shell 1, an annular protrusion 8 is formed between the annular groove 1 3 and the annular groove 2 7, the shell 1 extends into the annular groove 2 7, and an outer convex ring 9 is formed by rolling ribs at the annular protrusion 8 to be close to the annular protrusion 8. A good seal is formed between the annular groove 1 3 and the inner convex ring 4, and between the annular protrusion 8 and the outer convex ring 9, two-way sealing, and good sealing effect.

[0026] For further sealing, more than two annular grooves 3 may be provided. Annular groove 2 7 is provided on the side of the last annular groove 3 away from the outer shell 1 , and an annular protrusion 8 is formed between two adjacent annular grooves 3 . The outer shell 1 forms an outer convex ring 9 at the annular protrusion 8 .

[0027] Preferably, the depth d1 of the annular groove 1 3 is greater than the depth d2 of the annular groove 2 7 .

[0028] In order to better fit the housing 1 on the outer periphery of the water outlet node 2 , the cross-sections of the annular groove 1 3 and the annular groove 2 7 are both arc-shaped, and the cross-sectional radius R1 of the annular groove 1 3 is greater than the cross-sectional radius R2 of the annular groove 2 7 .

[0029] Furthermore, the cross section of the annular protrusion 8 is an arc shape, and the cross section radius R3 of the annular protrusion 8 is between the cross section radius R1 of the annular groove 1 3 and the cross section radius R2 of the annular groove 2 7 .

[0030] In order to facilitate the casing 1 to be mounted outside the water outlet section 2 , the annular protrusion 8 does not protrude from the outer peripheral surface 10 of the water outlet section 2 close to the casing 1 .

[0031] Preferably, the material of the shell 1 is 304 stainless steel, cold-rolled steel or galvanized sheet, and the material of the water outlet node 2 is plastic, cast iron or aluminum alloy. In this embodiment, the material of the shell 1 is 304 stainless steel, which has good corrosion resistance and is not easy to rust; the material of the water outlet node 2 is plastic, which is light in weight and easy to process and form the annular groove 1 3 and the annular groove 2 7.

[0032] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A connection structure between a water outlet section and a casing of a deep well pump, comprising a casing (1) and a water outlet section (2), characterized in that: The outer shell (1) is formed outside the water outlet joint (2) by rolling ribs, the outer side wall of the water outlet joint (2) is concave to form an annular groove (3), the outer shell (1) is sleeved outside the water outlet joint (2), and an inner convex ring (4) is formed at the annular groove (3) by rolling ribs, and the inner surface (5) of the inner convex ring (4) is tightly attached to the outer surface (6) of the annular groove (3).

2. The connection structure between the outlet joint and the housing of a deep well pump according to claim 1, characterized in that: The outer side wall of the water outlet joint (2) is also provided with an annular groove 2 (7) located on the side of the annular groove 1 (3) away from the outer shell (1), an annular protrusion (8) is formed between the annular groove 1 (3) and the annular groove 2 (7), the outer shell (1) extends into the annular groove 2 (7), and an outer protrusion ring (9) is formed at the annular protrusion (8) by rolling ribs and is tightly attached to the annular protrusion (8).

3. The connection structure between the outlet joint and the housing of a deep well pump according to claim 2, characterized in that: The depth of the annular groove one (3) is greater than the depth of the annular groove two (7).

4. The connection structure between the outlet joint and the housing of a deep well pump according to claim 2, characterized in that: The cross-sections of the annular groove 1 (3) and the annular groove 2 (7) are both arc-shaped, and the cross-sectional radius of the annular groove 1 (3) is greater than the cross-sectional radius of the annular groove 2 (7).

5. The connection structure between the outlet joint and the housing of a deep well pump according to claim 4, characterized in that: The cross section of the annular protrusion (8) is in the shape of an arc, and the cross section radius of the annular protrusion (8) is between the cross section radius of the annular groove 1 (3) and the cross section radius of the annular groove 2 (7).

6. The connection structure between the outlet joint and the housing of a deep well pump according to claim 2, characterized in that: The annular protrusion (8) does not protrude from the outer peripheral surface (10) of the water outlet node (2) close to the outer shell (1).

7. The connection structure between the outlet joint and the housing of a deep well pump according to claim 1, characterized in that: The material of the shell (1) is 304 stainless steel, cold-rolled steel or galvanized sheet, and the material of the water outlet node (2) is plastic, cast iron or aluminum alloy.

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