Special rubber hose for flexible-shaft deep-well pump

Abstract

The utility model belongs to the technical field of rubber hoses, and particularly relates to a special rubber hose for a flexible shaft deep well pump, which comprises an outer rubber layer, an outer steel wire braided layer, an inner rubber layer, an inner steel wire braided layer, a protective layer and a steel flat spring, a protective layer, an inner steel wire braided layer, an inward rubber layer, an outer steel wire braided layer and an outer rubber layer are sequentially arranged from the steel flat spring to the outside, a straight steel wire is arranged between the steel flat spring and the protective layer, and the straight steel wire extends in the axial direction of the hose. According to the utility model, one or two straight steel wires are arranged between the protective layer and the steel flat spring, and the straight steel wires are only arranged in one bending direction of the rubber hose, so that the straight steel wires are arranged in the rubber hose, the bending of the rubber hose is not influenced, and the extension of the rubber hose is limited due to the existence of the straight steel wires; and the durability of the two rubber hoses in the vertical direction is ensured.

Description

Technical Field

[0001] This utility model relates to the field of rubber hose technology, and in particular to a rubber hose specifically for a flexible shaft deep well pump. Background Technology

[0002] Water is extracted from deep wells using a centrifugal long-shaft deep well pump. The drive motor of this type of pump is fixed to the ground, and the impeller extending into the water is driven by a flexible long shaft to lift the groundwater to the surface. However, this flexible long shaft needs to work in the vertical direction. The existing flexible long shafts do not have enough axial rigidity, which leads to excessive axial deformation and a short service life. Utility Model Content

[0003] This utility model proposes a special rubber hose for flexible shaft deep well pumps.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A special rubber hose for a flexible shaft deep well pump includes an outer rubber layer, an outer steel wire braided layer, an inner rubber layer, an inner steel wire braided layer, a protective layer, and a steel flat spring. The steel flat spring is located at the innermost part. From the steel flat spring outwards, the protective layer, the inner steel wire braided layer, the inner rubber layer, the outer steel wire braided layer, and the outer rubber layer are arranged in sequence. A straight steel wire is arranged between the steel flat spring and the protective layer, and the straight steel wire extends along the axial direction of the hose.

[0006] Furthermore, the diameter of the straight steel wire is 0.2-0.5 mm.

[0007] Furthermore, the thickness of the outer rubber layer is 0.15–0.35 mm.

[0008] Furthermore, the thickness of the inner rubber layer is 0.15–0.35 mm.

[0009] Furthermore, the diameter of the steel wire in the outer steel wire braided layer is 0.3-0.4 mm.

[0010] Furthermore, the diameter of the steel wires in the inner steel wire braided layer is 0.15-0.3 mm.

[0011] Furthermore, the diameter of the steel wires in the inner steel wire braided layer is half that of the steel wires in the outer steel wire braided layer.

[0012] Furthermore, the braiding density of the inner steel wire braid layer is greater than that of the outer steel wire braid layer.

[0013] Furthermore, the protective layer is made of woven fabric.

[0014] Advantages: This utility model sets one or two straight steel wires between the protective layer and the steel flat spring. The straight steel wires are only in one direction of the rubber hose bending. Therefore, setting the straight steel wires in the rubber hose in this way will not affect the bending of the rubber hose, but also limit the elongation of the rubber hose due to the presence of the straight steel wires, thus ensuring the durability of the two rubber hoses in the vertical direction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1 Outer rubber layer, 2 Outer steel wire braided layer, 3 Inner rubber layer, 4 Inner steel wire braided layer, 5 Protective layer, 6 Steel flat spring, 7 Straight steel wire. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Example 1:

[0020] Reference Figure 1 A special rubber hose for a flexible shaft deep well pump includes an outer rubber layer 1, an outer steel wire braided layer 2, an inner rubber layer 3, an inner steel wire braided layer 4, a protective layer 5, and a steel flat spring 6. The steel flat spring 6 is located at the innermost part. From the steel flat spring 6 outwards, the protective layer 5, the inner steel wire braided layer 4, the inner rubber layer, the outer steel wire braided layer 2, and the outer rubber layer 1 are arranged in sequence. A straight steel wire 7 is arranged between the steel flat spring 6 and the protective layer 5, and the straight steel wire 7 extends along the axial direction of the hose.

[0021] Preferably, the diameter of the straight steel wire 7 is 0.2 mm. The thickness of the outer rubber layer 1 is 0.15 mm. The thickness of the inner rubber layer 3 is 0.15 mm. The diameter of the steel wire in the outer steel wire braided layer 2 is 0.3 mm. The diameter of the steel wire in the inner steel wire braided layer 4 is 0.15 mm. The braiding density of the inner steel wire braided layer 4 is greater than that of the outer steel wire braided layer 2. The protective layer 5 is made of woven fabric.

[0022] Example 2:

[0023] A special rubber hose for a flexible shaft deep well pump includes an outer rubber layer 1, an outer steel wire braided layer 2, an inner rubber layer 3, an inner steel wire braided layer 4, a protective layer 5, and a steel flat spring 6. The steel flat spring 6 is located at the innermost part. From the steel flat spring 6 outwards, the protective layer 5, the inner steel wire braided layer 4, the inner rubber layer, the outer steel wire braided layer 2, and the outer rubber layer 1 are arranged in sequence. Two straight steel wires 7 are arranged between the steel flat spring 6 and the protective layer 5, and the two straight steel wires 7 are arranged closely side by side. The straight steel wires 7 extend along the axial direction of the hose.

[0024] Preferably, the diameter of the straight steel wire 7 is 0.5 mm. The thickness of the outer rubber layer 1 is 0.35 mm. The thickness of the inner rubber layer 3 is 0.35 mm. The diameter of the steel wire in the outer steel wire braided layer 2 is 0.4 mm. The diameter of the steel wire in the inner steel wire braided layer 4 is 0.3 mm. The braiding density of the inner steel wire braided layer 4 is greater than that of the outer steel wire braided layer 2. The protective layer 5 is made of woven fabric.

[0025] Example 3:

[0026] A special rubber hose for a flexible shaft deep well pump includes an outer rubber layer 1, an outer steel wire braided layer 2, an inner rubber layer 3, an inner steel wire braided layer 4, a protective layer 5, and a steel flat spring 6. The steel flat spring 6 is located at the innermost part. From the steel flat spring 6 outwards, the protective layer 5, the inner steel wire braided layer 4, the inner rubber layer, the outer steel wire braided layer 2, and the outer rubber layer 1 are arranged in sequence. A straight steel wire 7 is arranged between the steel flat spring 6 and the protective layer 5, and the straight steel wire 7 extends along the axial direction of the hose.

[0027] Preferably, the diameter of the straight steel wire 7 is 0.4 mm. The thickness of the outer rubber layer 1 is 0.2 mm. The thickness of the inner rubber layer 3 is 0.3 mm. The diameter of the steel wire in the outer steel wire braided layer 2 is 0.35 mm. The diameter of the steel wire in the inner steel wire braided layer 4 is 0.2 mm. The braiding density of the inner steel wire braided layer 4 is greater than that of the outer steel wire braided layer 2. The protective layer 5 is made of woven fabric.

[0028] Example 4:

[0029] A special rubber hose for a flexible shaft deep well pump includes an outer rubber layer 1, an outer steel wire braided layer 2, an inner rubber layer 3, an inner steel wire braided layer 4, a protective layer 5, and a steel flat spring 6. The steel flat spring 6 is located at the innermost part. From the steel flat spring 6 outwards, the protective layer 5, the inner steel wire braided layer 4, the inner rubber layer, the outer steel wire braided layer 2, and the outer rubber layer 1 are arranged in sequence. A straight steel wire 7 is arranged between the steel flat spring 6 and the protective layer 5, and the straight steel wire 7 extends along the axial direction of the hose.

[0030] Preferably, the diameter of the straight steel wire 7 is 0.3 mm. The thickness of the outer rubber layer 1 is 0.3 mm. The thickness of the inner rubber layer 3 is 0.3 mm. The diameter of the steel wire in the outer steel wire braided layer 2 is 0.4 mm. The diameter of the steel wire in the inner steel wire braided layer 4 is 0.2 mm. The diameter of the steel wire in the inner steel wire braided layer 4 is half that of the steel wire in the outer steel wire braided layer 2. The braiding density of the inner steel wire braided layer 4 is greater than that of the outer steel wire braided layer 2. The protective layer 5 is made of woven fabric.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rubber hose for soft shaft deep well pump, characterized in that: The flat spring is arranged in the innermost position, and the protective layer, the inner steel wire braid layer, the inner rubber layer, the outer steel wire braid layer and the outer rubber layer are sequentially arranged outward from the flat spring, a straight steel wire is arranged between the flat spring and the protective layer, and the straight steel wire extends along the axial direction of the hose.

2. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The diameter of the straight steel wire is 0.2-0.5mm.

3. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The thickness of the outer rubber layer is 0.15-0.35mm.

4. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The thickness of the inner rubber layer is 0.15-0.35mm.

5. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The diameter of the steel wire of the outer steel wire braid layer is 0.3-0.4mm.

6. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The diameter of the steel wire of the inner steel wire braid layer is 0.15-0.3mm.

7. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The diameter of the steel wire of the inner steel wire braid layer is half of the diameter of the steel wire of the outer steel wire braid layer.

8. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The weaving density of the inner steel wire braid layer is greater than the weaving density of the outer steel wire braid layer.

9. A rubber hose for soft shaft deep well pump according to claim 1, characterized in that: The protective layer is a woven cloth material.

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