Submerged pump with drawstring

Abstract

The utility model discloses a submerged pump with a drawstring, which belongs to the technical field of submerged pumps, comprises a pump body, and is characterized in that a first shell, a second shell and a third shell are sequentially arranged on the lower portion of the pump body, the upper portion of the third shell is attached to the edge of the lower portion of the second shell, and the upper portion of the second shell is attached to the edge of the lower portion of the first shell. The upper portion of the first shell is attached to the edge of the lower portion of the pump body, a drawstring is vertically arranged outside the first shell, the second shell and the third shell and comprises a welding portion, a step portion and a clamping portion, the welding portion, the step portion and the clamping portion are of an integrated structure, a screw is vertically arranged at the position, corresponding to the welding portion, of the pump body, and a connecting hole is formed in the position, corresponding to the step portion, of the third shell in a penetrating mode. According to the utility model, the stability of connection between the first shell and the pump body as well as between the first shell, the second shell and the third shell is effectively ensured, and meanwhile, the conciseness of the connection process is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a submersible pump equipped with a pull belt. Background Technique

[0002] A submersible pump is a widely used pump. During the working process, its impeller, pump body and other flow-through components are immersed in the material to be transported. Different usage scenarios have different requirements for submersible pumps. Among them, the head is an important factor to be considered when selecting a submersible pump, and the head is related to the number of stages. Different numbers of stages correspond to different numbers of outer casings. The outer casings are located at the lower part of the submersible pump. When the number of outer casings is large, the installation method is to stack the outer casings coaxially in sequence. This will involve a problem, that is, the raw material of the outer casing is a metal plate with a small thickness. To ensure strength, the upper edge position is generally set as a folded corner structure. In this way, although the outer casing can stably support the upper layer of the outer casing, it is difficult to stably connect the outer casings through traditional connection structures, such as bolts. Although the connection effect can be achieved through other methods, such as welding the connection position as a whole, adding an annular connecting plate at the connection position and equipping bolts, etc., it will obviously lead to an increase in the workload. Based on this situation, how to stably connect the outer casings at the lower part of the submersible pump and make the connection process as simple as possible has increasingly become an urgent problem for relevant technical personnel to solve. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides a submersible pump equipped with a pull belt.

[0004] A submersible pump equipped with a pull belt includes a pump body, and is characterized in that: a first outer casing, a second outer casing, and a third outer casing are sequentially arranged at the lower part of the pump body. The upper part of the third outer casing is attached to the lower edge position of the second outer casing, the upper part of the second outer casing is attached to the lower edge position of the first outer casing, and the upper part of the first outer casing is attached to the lower edge position of the pump body. Pull belts are vertically arranged outside the first outer casing, the second outer casing, and the third outer casing.

[0005] Further, the pull belt includes a welding part, a step part, and a clamping part. The welding part, the step part, and the clamping part are an integral structure. A screw rod is vertically arranged at the position corresponding to the welding part of the pump body, and a connection hole is penetrated through the position corresponding to the step part of the third outer casing.

[0006] Further, the welding part is welded to the screw rod, the step part traverses the connection hole, the welding part is located outside the third outer casing, and the clamping part is located inside the third outer casing.

[0007] Further, the length of the welding part is 18*n + 6 ± 0.5 mm or 27*n + 6 ± 0.5 mm, where n is the number of stages of the submersible pump, and 18 and 27 represent the models of the submersible pump. The sum of the lengths of the clamping part and the step part is 6 ± 0.1 mm, the width of the pulling belt is 14.5 ± 0.1 mm, and the thickness of the pulling belt is 1.15 mm - 1.2 mm.

[0008] Further, the number of the pulling belts is 3 groups, and the 3 groups of pulling belts are arranged in an equidistant ring.

[0009] The beneficial effects of a submersible pump equipped with a pulling belt of the present utility model are as follows:

[0010] 1. The sequential arrangement of the first housing, the second housing, and the third housing provides a good structural basis for the stable connection between the first housing and the pump body and among the first housing, the second housing, and the third housing. The welding part is welded to the screw, and the step part traverses the connection hole, effectively ensuring the double-point positioning of the first housing, the second housing, and the third housing as a whole in the vertical direction, and further ensuring the stability of the connection between the first housing and the pump body and among the first housing, the second housing, and the third housing;

[0011] 2. The staff only needs to insert the clamping part into the connection hole and make the step part traverse the connection hole, and then weld the welding part to the screw, so as to complete the installation work of the pulling belt, effectively ensuring the simplicity of the connection process;

[0012] 3. The dimensional range of the length of the pulling belt and the specific numerical values of the width and thickness provide accurate references for the design and manufacture of the pulling belt, effectively ensuring the accuracy of the pulling belt and its applicability to different specifications of housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art, but it is not a limitation to the protection scope of the present utility model.

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the cross-sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is Figure 2 the partial enlarged view at A in

[0017] Figure 4 is the structural schematic diagram (I) of the pulling belt of the present utility model;

[0018] Figure 5Structural schematic diagram (II) of the drawstring of the present utility model.

[0019] Among them, 1 - pump body, 2 - first outer shell, 3 - second outer shell, 4 - third outer shell, 5 - drawstring, 6 - connection hole, 7 - screw, 8 - welding part, 9 - clamping part, 10 - step part. Specific implementation mode

[0020] For clearer description, in combination with the accompanying drawings of the specification, a submersible pump equipped with a drawstring of the present utility model will be further described.

[0021] A submersible pump equipped with a drawstring includes a pump body 1, and is characterized in that: a first outer shell 2, a second outer shell 3, and a third outer shell 4 are sequentially arranged below the pump body 1. The upper part of the third outer shell 4 is attached to the lower edge position of the second outer shell 3, the upper part of the second outer shell 3 is attached to the lower edge position of the first outer shell 2, the upper part of the first outer shell 2 is attached to the lower edge position of the pump body 1, and drawstrings 5 are vertically arranged outside the first outer shell 2, the second outer shell 3, and the third outer shell 4.

[0022] Furthermore, the drawstring 5 includes a welding part 8, a step part 10, and a clamping part 9. The welding part 8, the step part 10, and the clamping part 9 are of an integral structure. A screw 7 is vertically arranged at a position corresponding to the welding part 8 on the pump body 1, and a connection hole 6 is penetrated at a position corresponding to the step part 10 on the third outer shell 4.

[0023] Furthermore, the welding part 8 is welded to the screw 7, the step part 10 traverses the connection hole 6, the welding part 8 is located outside the third outer shell 4, and the clamping part 9 is located inside the third outer shell 4.

[0024] Furthermore, the length of the welding part 8 is 18*n + 6 ± 0.5 mm or 27*n + 6 ± 0.5 mm, where n is the number of stages of the submersible pump, 18 and 27 represent the models of the submersible pump. The sum of the lengths of the clamping part 9 and the step part 10 is 6 ± 0.1 mm, the width of the drawstring 5 is 14.5 ± 0.1 mm, and the thickness of the drawstring 5 is 1.15 mm - 1.2 mm.

[0025] Furthermore, the number of the drawstrings 5 is 3 groups, and the 3 groups of drawstrings 5 are arranged in an equidistant circular shape.

[0026] The working principle of a submersible pump with a drawband according to the present utility model is as follows: According to the specifications of each housing, a drawband 5 of a suitable size is selected. The third housing 4, the second housing 3, the first housing 2, and the pump body 1 are stably placed in sequence from bottom to top. The clamping portion 9 is inserted into the connection hole 6 and the stepped portion 10 traverses the connection hole 6. At this time, the welding portion 8 extends vertically upward to the outside of the first housing 2. The screw 7 is turned until the lower end of the screw 7 exceeds the upper end of the drawband 5 by a suitable length, and the welding portion 8 and the screw 7 are welded. Thus, the installation work of a set of drawbands 5 is completed. According to this method, the remaining 2 sets of drawbands 5 are installed in place, the welding portion 8 and the screw 7 are welded, and the stepped portion 10 traverses the connection hole 6, ensuring double-point positioning of the first housing 2, the second housing 3, and the third housing 4 as a whole in the vertical direction, that is, ensuring the stable connection of the first housing 2, the second housing 3, and the third housing 4 as a whole, and also ensuring the stable connection of the first housing 2, the second housing 3, and the third housing 4 as a whole with the pump body 1.

[0027] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A submersible pump equipped with a drawstring, comprising a pump body, characterized in that: The lower part of the pump body is sequentially provided with a first shell, a second shell, and a third shell, the upper part of the third shell is in contact with the lower edge of the second shell, the upper part of the second shell is in contact with the lower edge of the first shell, the upper part of the first shell is in contact with the lower edge of the pump body, and drawstrings are vertically provided on the outside of the first shell, the second shell, and the third shell.

2. A submersible pump equipped with a drawstring according to claim 1, characterized in that: The drawstring includes a welding portion, a step portion, and a clamping portion, which are an integrated structure. A screw is vertically arranged at a position corresponding to the pump body and the welding portion, and a connecting hole is penetrated at a position corresponding to the step portion of the third shell.

3. A submersible pump equipped with a drawstring according to claim 2, characterized in that: The welding portion is welded to the screw rod, the step portion crosses the connecting hole, the welding portion is located outside the third shell, and the clamping portion is located inside the third shell.

4. A submersible pump equipped with a drawstring according to claim 2, characterized in that: The length of the welding part is 18*n+6±0.5mm or 27*n+6±0.5mm, wherein n is the stage number of the submersible pump, 18 and 27 represent the model of the submersible pump, the sum of the lengths of the clamping part and the step part is 6±0.1mm, the width of the drawstring is 14.5±0.1mm, and the thickness of the drawstring is 1.15mm-1.2mm.

5. A submersible pump equipped with a drawstring according to claim 1, characterized in that: The number of the drawstrings is 3 groups, and the 3 groups of drawstrings are equidistantly arranged in a ring shape.

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