A submersible sewage pump coupling and lifting device and installation method thereof

Abstract

The present invention discloses a coupling and lifting device for a submersible sewage pump, comprising a coupling seat, a coupling frame, a limit seat, a guide and a submersible sewage pump. Two positioning blocks are symmetrically arranged on both sides of the inlet flange of the coupling seat, two positioning grooves are symmetrically arranged on both sides of the flange of the coupling frame, and two C-shaped guide grooves are symmetrically arranged on both sides of the upper flange of the coupling frame; the coupling seat and the coupling frame are positioned and connected by the positioning inclined surface (1) of the positioning block and the positioning inclined surface (2) of the positioning groove, and the flange inclined surface (1) of the coupling seat and the flange inclined surface (2) of the coupling frame, so as to realize the coupling of the submersible sewage pump and the outlet pipeline. The limit seat is arranged below the inlet of the submersible sewage pump, and is used to limit the lateral displacement of the submersible sewage pump; the guide is used to guide the steel wire rope used for lifting, and at the same time distribute the force of the left and right steel wire ropes. The present invention is applied to the coupling and lifting of large submersible sewage pumps with a caliber of more than 300 mm, and the coupling and lifting are convenient, the sealing is reliable, the maintenance is simple, the service life is long, and the maintenance cost is low.

Description

Technical Field

[0001] The invention relates to the field of sewage pumps, in particular to a coupling and lifting device for a submersible sewage pump. Background Art

[0002] The submersible sewage pump coupling and lifting device is used for automatic coupling, connection and sealing of the submersible sewage pump and the outlet pipeline, and can also lift the submersible sewage pump for maintenance.

[0003] The coupling and lifting devices of the prior art are mostly used for small submersible sewage pumps with a diameter of less than 300mm, and the technology of coupling and lifting devices for large submersible sewage pumps with a diameter of more than 300mm is mostly not very mature. Its coupling and positioning surfaces are both arranged above the flange, which produces a unilateral eccentric clamping force, making it difficult to seal the lower side of the coupling flange surface. Secondly, the coupling device of the prior art does not have a lateral limiting measure, which causes the coupling flange surface to be lateral misaligned in most cases, making it difficult to achieve coupling and sealing. In addition, the positioning surface of the coupling device of the prior art is easily worn, thereby reducing the coupling and positioning accuracy. Finally, the lifting position of the lifting device of the prior art is set at the top of the motor, which is difficult to be on the same vertical line with the combined force of gravity and coupling force. At this time, a rotational torque will be generated, causing the positioning surfaces or the guide rod and the coupling frame to get stuck, eventually causing the lifting device to fail.

[0004] In summary, the coupling and lifting device of the submersible sewage pump in the prior art, especially for large submersible sewage pumps, is difficult to achieve coupling sealing and lifting, has a high failure rate, a short life, and increases maintenance time and maintenance cost. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a submersible sewage pump coupling and lifting device, which is suitable for large submersible sewage pumps with a diameter of more than 300mm. It has convenient coupling and lifting, reliable sealing, simple maintenance, long service life and low maintenance cost.

[0006] The technical solution adopted by the present invention is:

[0007] A coupling and lifting device for a submersible sewage pump comprises a coupling seat, a coupling frame, a limit seat, a guide and a submersible sewage pump, wherein two positioning blocks are symmetrically arranged on both sides of an inlet flange of the coupling seat, and two fixing bosses are symmetrically arranged on both sides of the upper part of a horizontal pipe section of the coupling seat; two positioning grooves are symmetrically arranged on both sides of the flange of the coupling frame, and two C-shaped guide grooves are symmetrically arranged on both sides of the upper part of the flange of the coupling frame; the coupling frame is connected to the outlet flange of the submersible sewage pump by bolts, and is positioned by two conical pins symmetrically arranged on both sides of the flange; the coupling seat and the coupling frame are connected by a positioning inclined surface (one) of the positioning block and a positioning inclined surface (two) of the positioning groove. ) and the flange bevel (1) of the coupling seat are positioned and connected with the flange bevel (2) of the coupling frame, so as to realize the coupling of the submersible sewage pump and the outlet pipeline. At this time, the positioning bevel (1) coincides with the positioning bevel (2), and the flange bevel (1) coincides with the flange bevel (2); the limit seat is arranged below the inlet of the submersible sewage pump and fixed on the ground of the pool to limit the lateral displacement of the submersible sewage pump; the guide is fixed on both sides of the motor end cover of the submersible sewage pump to guide the lifting wire rope and distribute the force of the left and right wire ropes at the same time; the present invention is applied to the coupling and lifting of large submersible sewage pumps with a diameter of more than 300mm.

[0008] As a further improvement of the present invention, the positioning block includes a positioning bevel (I), the positioning bevels (I) of the two positioning blocks are located on the same plane, the line connecting the centers of action of the two positioning bevels (I) is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location; the angle between the positioning bevel (I) and the vertical plane of the axis of the flow channel at that location is 15°.

[0009] As a further improvement of the present invention, the positioning groove includes a positioning bevel (two), the positioning bevels (two) of the two positioning grooves are located on the same plane, the line connecting the centers of action of the two positioning bevels (two) is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location; the angle between the positioning bevel (two) and the vertical plane of the axis of the flow channel at that location is 15°.

[0010] As a further improvement of the present invention, the angles between the flange bevel (1) and the flange bevel (2) and the vertical plane of the flow channel axis at that location are both 2°.

[0011] As a further improvement of the present invention, the surfaces of the positioning bevel (1) and the positioning bevel (2) are sprayed with wear-resistant tungsten carbide.

[0012] As a further improvement of the present invention, the submersible sewage pump includes two lifting bosses arranged on the upper part of the pump body on the left and right sides, and two limiting bosses symmetrically arranged on both sides of the lower part of the submersible sewage pump inlet; the lifting boss is provided with a lifting ring thread; the limiting boss includes two limiting surfaces (one) parallel to each other.

[0013] As a further improvement of the present invention, the limit seat includes two limit surfaces (two) parallel to each other and two symmetrically arranged transition surfaces; the distance between the two limit surfaces (one) is equal to the distance between the two limit surfaces (two); the two limit bosses extend between the two limit surfaces (two) of the limit seat.

[0014] As a further improvement of the present invention, the guide includes a first guide surface, a second guide surface and an arc guide surface connecting the first guide surface and the second guide surface.

[0015] The present invention also provides an installation method for the coupling and lifting device of the submersible sewage pump, comprising the following steps: placing the coupling seat at the bottom of the pool, sleeve the bottom plate bolt holes on the anchor bolts, first adjusting the coupling seat so that its bottom plate surface is horizontal, and the horizontal tolerance does not exceed 0.3mm, otherwise it is adjusted by adding metal gaskets until the horizontality meets the requirements, and then the anchor bolts are fixed; the two guide rods are allowed to fall vertically, so that the lower end of the tubular guide rod is sleeved on the fixed boss of the coupling seat, and then the guide rod is made vertical, and the vertical tolerance does not exceed 1.2mm, and then the upper and lower ends of the guide rods are fixed; the coupling frame flange is combined with the outlet flange of the submersible sewage pump, and the two groups of pin holes are aligned at the same time, and then the conical pins are driven in for positioning, and finally the flange bolts are locked; the left and right branches of the wire rope are connected to the submersible sewage pump through the lifting ring, and the guide device fixed to the submersible sewage pump is used for guidance; Lift the submersible sewage pump (including the coupling frame) by a crane, so that the two C-shaped guide grooves of the coupling frame are buckled between the two guide rods, and slide down at a uniform speed along the two guide rods until the coupling seat and the coupling frame are coupled; check the coupling condition to ensure that except for the positioning bevel (2) of the coupling frame and the positioning bevel (1) of the coupling seat, and the flange bevel (2) and the flange bevel (1) of the coupling seat, the other parts of the coupling frame (including the two C-shaped guide grooves) are not in contact with the coupling seat, and the flange bevel (1) and the flange bevel (2) are completely overlapped and there is no misalignment, otherwise adjustments should be made; gently push the limit seat along the limit surface (1) of the submersible sewage pump to make the limit surface (2) overlap symmetrically with the limit surface (1), and then fix the limit seat to the bottom of the pool. When fixing, there should be no additional force between the limit surface (2) and the limit surface (1), and the installation is now completed.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The coupling force acts evenly and the seal is reliable: the combined force of the two positioning blocks and the positioning inclined surface of the positioning groove coincides with the axis of the flange at that location, so the unit force distributed on the coupling seat and the coupling frame flange inclined surface is also uniform, and the bias phenomenon of the prior art will not occur, so the coupling seal is more reliable.

[0018] 2. Reliable coupling and lifting: When the coupling seat is coupled with the coupling frame, except for the contact between the positioning bevel (2) and the positioning bevel (1) and the flange bevel (2) and the flange bevel (1), the other parts of the coupling frame (including the two C-shaped guide grooves) will not contact the coupling seat, so there will be no overhead or biting. In addition, the use of conical pins ensures that the center of gravity of the submersible sewage pump will not be biased to one side.

[0019] 3. No misalignment: Since the present invention adopts a limit seat for lateral limiting, the flow channel of the flange slope will not be misaligned and no impact loss of the fluid will occur.

[0020] 4. Smooth lifting: The use of the guide and the left and right branches of the wire rope can automatically distribute the tension, and no additional rotational torque will be generated, so the lifting is smooth.

[0021] 5. Long service life of the coupling positioning surface: Since the surfaces of the positioning bevel (1) and the positioning bevel (2) are sprayed with wear-resistant tungsten carbide, the service life of the coupling device is relatively high.

[0022] 6. Reasonable installation method ensures the installation and coupling accuracy of the present invention.

[0023] In summary, the submersible sewage pump coupling and lifting device and the installation method thereof described in the present invention have the advantages of high coupling positioning accuracy, reliable sealing, convenient operation, and long service life. Therefore, the present invention is more suitable for the coupling and lifting of large submersible sewage pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is the front view of the present invention.

[0026] Figure 2 This is a partial enlarged view of Part I.

[0027] Figure 3 It is a top view of the present invention.

[0028] Figure 4 The right side view of the submersible sewage pump of the present invention

[0029] Figure 5 It is a structural diagram of the coupling seat of the present invention.

[0030] Figure 6 It is a structural diagram of the coupling frame of the present invention.

[0031] Figure 7 It is a structural diagram of the limiting seat of the present invention.

[0032] Figure 8 It is a structural diagram of the guide of the present invention.

[0033] In the figure: 1, coupling seat, 2, coupling frame, 3, conical pin, 4, limiting seat, 5, submersible sewage pump, 6, guide, 7, wire rope, 8, guide rod, 9, outlet pipe, 11, positioning block, 12, fixing boss, 21, positioning groove, 22, C-shaped guide groove, 51, limiting boss, 52, lifting boss, 100, positioning inclined surface (one), 200, positioning inclined surface (two), 101, flange inclined surface (one), 201, flange inclined surface (two), 400, limiting surface (two), 401, transition surface, 500, limiting surface (one), 600, first guide surface, 601, second guide surface, 602, arc guide surface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figures 1 to 8As shown, the present invention provides a coupling and lifting device for a submersible sewage pump, comprising a coupling seat 1, a coupling frame 2, a limit seat 4, a guide 6 and a submersible sewage pump 5. The submersible sewage pump 5, the coupling frame 2, the coupling seat 1 and the outlet pipeline 9 are connected in sequence, so that the outlet flow channel of the submersible sewage pump 5, the inner hole of the coupling frame 2, the flow channel of the coupling seat 1 and the flow channel of the outlet pipeline 9 form a fluid channel of equal diameter. Two positioning blocks 11 are symmetrically arranged on both sides of the inlet flange of the coupling seat 1, and two fixed bosses 12 are symmetrically arranged on both sides of the upper part of the horizontal pipe section of the coupling seat 1. The fixed boss 12 is used to locate and connect the lower end of the guide rod 8. The lower end of the tubular guide rod 8 is sleeved on the fixed boss 12 and fixed with a countersunk screw. Two positioning grooves 21 are symmetrically arranged on both sides of the flange of the coupling frame 2, and two C-shaped guide grooves 22 are symmetrically arranged on both sides of the upper part of the flange of the coupling frame 2. The C-shaped guide groove 22 guides during the descent of the submersible sewage pump 5 (including the coupling frame 2). There is a certain hardness difference between the material of the C-shaped guide groove 22 and the material of the guide rod 8 to prevent frictional heat from biting each other. The coupling frame 2 is connected to the outlet flange of the submersible sewage pump 5 by bolts, and is positioned by two conical pins 3 symmetrically arranged on both sides of the flange. Since there is a certain gap between the bolts and the bolt holes, the submersible sewage pump 5 can be prevented from deflecting relative to the coupling frame 2 to shift the center of gravity. The coupling seat 1 and the coupling frame 2 are positioned and connected by the positioning bevel (1) 100 of the positioning block 11 and the positioning bevel (2) 200 of the positioning groove 21, and the flange bevel (1) 101 of the coupling seat 1 and the flange bevel (2) 201 of the coupling frame 2, thereby realizing the coupling of the submersible sewage pump 5 and the outlet pipeline 9. At this time, the positioning bevel (1) 100 overlaps with the positioning bevel (2) 200, and the flange bevel (1) 101 overlaps with the flange bevel (2) 201. The limit seat 4 is arranged below the inlet of the submersible sewage pump 5 and fixed on the ground of the pool to limit the lateral displacement of the submersible sewage pump 5. The guide 6 is fixed on both sides of the motor end cover of the submersible sewage pump 5 to guide the lifting wire rope 7 and distribute the force of the left and right wire ropes. The present invention is applied to the coupling and lifting of large submersible sewage pumps with a diameter of more than 300 mm.

[0038] like Figure 2 and Figure 5 As shown, the positioning block 11 includes a positioning bevel (I) 100. The positioning bevels (I) 100 of the two positioning blocks 11 are located on the same plane. The line connecting the centers of action of the two positioning bevels (I) 100 is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location. The angle between the positioning bevel (I) 100 and the vertical plane of the axis of the flow channel at that location is 15° (clockwise rotation from the vertical plane). Compared with the angle of 20° to 30° in the prior art, the smaller angle will produce a greater coupling force, making the flange seal more reliable.

[0039] like Figure 2 and Figure 6As shown, the positioning groove 21 includes a positioning bevel (II) 200. The positioning bevels (II) 200 of the two positioning grooves 21 are located on the same plane. The line connecting the centers of action of the two positioning bevels (II) 200 is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location. The angle between the positioning bevel (II) 200 and the vertical plane of the axis of the flow channel at that location is 15° (clockwise rotation from the vertical plane). Compared with the angle of 20° to 30° in the prior art, the smaller angle will produce a greater coupling force, making the flange seal more reliable.

[0040] like Figure 2 As shown, the angles between the flange bevel (I) 101 and the flange bevel (II) 201 and the vertical plane of the flow channel axis are both 2° (counterclockwise from the vertical plane). The surfaces of the positioning bevel (I) 100 and the positioning bevel (II) 200 are sprayed with wear-resistant tungsten carbide, which increases the hardness of the contact surface and improves the coupling life.

[0041] like Figure 1 and Figure 4 As shown, the submersible sewage pump 5 includes two lifting bosses 52 arranged on the upper part of the left and right pump bodies, and two limiting bosses 51 symmetrically arranged on both sides of the lower part of the submersible sewage pump inlet. The lifting bosses 52 are provided with lifting ring threads. Compared with the single-point lifting in the prior art, the two-point lifting is more stable and makes the flange sealing more reliable. The limiting boss 51 includes two limiting surfaces (I) 500 parallel to each other.

[0042] like Figure 1 and Figure 7 As shown, the limit seat 4 includes two limit surfaces (II) 400 parallel to each other and two symmetrically arranged transition surfaces 401. The distance between the two limit surfaces (I) 500 is equal to the distance between the two limit surfaces (II) 400. The two limit bosses 51 extend between the two limit surfaces (II) 400 of the limit seat 4. The limit seat 4 limits the lateral displacement of the limit bosses 51 of the submersible sewage pump 5, thereby avoiding lateral misalignment of the coupling sealing surface.

[0043] like Figure 8 As shown, the guide 6 includes a first guide surface 600, a second guide surface 601 and an arc guide surface 602 connecting the two. The left and right branches of the wire rope 7 are respectively strictly fitted with the three sections of the guide surfaces of the two guides 6 to achieve guidance and tension distribution.

[0044] In this embodiment, static seals are provided between the flanges of the submersible sewage pump 5 and the coupling frame 2 and between the flanges of the coupling seat 1 and the outlet pipe 9, and the possibility of providing static seals between the flanges of the coupling frame 2 and the coupling seat 1 is not excluded.

[0045] Installation method of coupling and lifting device of submersible sewage pump: Place coupling seat 1 at the bottom of the pool, and cover the bottom plate bolt hole with the anchor bolt (pre-buried in the bottom of the pool and fixed). First, adjust coupling seat 1 so that its bottom plate surface is horizontal. Use a level to measure, and the horizontal tolerance should not exceed 0.3mm. Otherwise, adjust by adding metal gaskets until the horizontality meets the requirements, and then fix the anchor bolt; let the two guide rods 8 fall vertically, so that the lower end of the tubular guide rod 8 is covered on the fixed boss 12 of the coupling seat, and then make the guide rod 8 vertical, and the vertical tolerance should not exceed 1.2mm, and then fix the upper and lower ends of the guide rod 8. Combine the flange of coupling frame 2 with the outlet flange of submersible sewage pump 5, and make the two sets of pin holes face each other, then drive in the conical pin 3 for positioning, and finally tighten the flange bolts. Connect the left and right branches of wire rope 7 to submersible sewage pump 5 through lifting rings, and use the guide 6 fixed to submersible sewage pump 5 for guidance. Lift the submersible sewage pump 5 (including the coupling frame 2) by a crane, so that the two C-shaped guide grooves 22 of the coupling frame 2 are buckled between the two guide rods 8, and slide down along the two guide rods 8 at a uniform speed until the coupling seat 1 and the coupling frame 2 are coupled. Check the coupling condition to ensure that except for the positioning bevel (II) 200 of the coupling frame 2 and the positioning bevel (I) 100 of the coupling seat 1 and the flange bevel (II) 201 and the flange bevel (I) 101 of the coupling seat 1, the other parts of the coupling frame 2 (including the two C-shaped guide grooves 22) are not in contact with the coupling seat 1, and the flange bevel (I) 101 and the flange bevel (II) 201 are completely overlapped and there is no misalignment, otherwise adjustments should be made. Gently push the limit seat 4 along the limit surface (I) 500 of the submersible sewage pump 5 so that the limit surface (II) 400 and the limit surface (I) 500 overlap symmetrically, and then fix the limit seat 4 to the bottom of the pool. When fixing, there should be no additional force between the limit surface (II) 400 and the limit surface (I) 500. At this time, the installation is completed.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A submersible sewage pump coupling and lifting device, characterized in that: It includes a coupling seat, a coupling frame, a limit seat, a guide and a submersible sewage pump. Two positioning blocks are symmetrically arranged on both sides of the inlet flange of the coupling seat, and two fixing bosses are symmetrically arranged on both sides of the upper part of the horizontal pipe section of the coupling seat; two positioning grooves are symmetrically arranged on both sides of the flange of the coupling frame, and two C-shaped guide grooves are symmetrically arranged on both sides of the upper part of the flange of the coupling frame; the coupling frame is connected to the outlet flange of the submersible sewage pump by bolts, and is positioned by two conical pins symmetrically arranged on both sides of the flange; the coupling seat and the coupling frame are connected by the positioning inclined surface 1 of the positioning block and the positioning inclined surface 2 of the positioning groove The flange bevel 1 of the coupling seat is positioned and connected with the flange bevel 2 of the coupling frame, so as to realize the coupling between the submersible sewage pump and the outlet pipeline. At this time, the positioning bevel 1 overlaps with the positioning bevel 2, and the flange bevel 1 overlaps with the flange bevel 2; the limit seat is arranged below the inlet of the submersible sewage pump and fixed on the ground of the pool to limit the lateral displacement of the submersible sewage pump; the guide is fixed on both sides of the end cover of the submersible sewage pump motor to guide the lifting wire rope and distribute the force of the left and right wire ropes at the same time; it is applied to the coupling and lifting of large submersible sewage pumps with a diameter of more than 300mm; The positioning block includes a positioning inclined surface 1, the positioning inclined surfaces 1 of the two positioning blocks are located on the same plane, the line connecting the centers of action of the two positioning inclined surfaces 1 is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location; the angle between the positioning inclined surface 1 and the vertical plane of the axis of the flow channel at that location is 15°; The positioning groove includes a second positioning slope, and the second positioning slopes of the two positioning grooves are located on the same plane. The line connecting the centers of action of the two second positioning slopes is a horizontal line and intersects perpendicularly with the axis of the flow channel at that location; the angle between the second positioning slope and the vertical plane of the axis of the flow channel at that location is 15°.

2. The submersible sewage pump coupling and lifting device according to claim 1, characterized in that: The included angles between the first flange slope and the second flange slope and the vertical plane of the flow channel axis at that location are both 2°.

3. The submersible sewage pump coupling and lifting device according to claim 1 is characterized in that: The surfaces of the first positioning bevel and the second positioning bevel are sprayed with wear-resistant tungsten carbide.

4. The submersible sewage pump coupling and lifting device according to claim 1, characterized in that: The submersible sewage pump comprises two lifting bosses arranged on the upper part of the left and right pump bodies, and two limiting bosses symmetrically arranged on both sides of the lower part of the submersible sewage pump inlet; the lifting bosses are provided with lifting ring threads; the limiting bosses comprise two limiting surfaces parallel to each other.

5. The submersible sewage pump coupling and lifting device according to claim 4, characterized in that: The limit seat comprises two mutually parallel limit surfaces 2 and two symmetrically arranged transition surfaces; the distance between the two limit surfaces 1 is equal to the distance between the two limit surfaces 2; the two limit bosses extend between the two limit surfaces 2 of the limit seat.

6. The submersible sewage pump coupling and lifting device according to claim 1, characterized in that: The guide comprises a first guide surface, a second guide surface and an arc guide surface connecting the first guide surface and the second guide surface.

7. The installation method of the submersible sewage pump coupling and lifting device according to claim 6 is characterized in that: Place the coupling seat on the bottom of the pool, and put the bottom plate bolt holes on the anchor bolts. First, adjust the coupling seat so that its bottom plate surface is horizontal, and the horizontal tolerance does not exceed 0.3mm. Otherwise, adjust it by adding metal gaskets until the horizontality meets the requirements, and then fix the anchor bolts; let the two guide rods fall vertically, so that the lower end of the tubular guide rod is sleeved on the fixed boss of the coupling seat, and then make the guide rod vertical, and the vertical tolerance does not exceed 1.2mm, and then fix the upper and lower ends of the guide rods; combine the coupling frame flange with the outlet flange of the submersible sewage pump, and at the same time make the two groups of pin holes face each other, then insert the conical pin for positioning, and finally tighten the flange bolts; connect the left and right branches of the wire rope to the submersible sewage pump through the lifting ring, and use the guide fixed to the submersible sewage pump for guidance; lift it by crane The submersible sewage pump includes a coupling frame, and the two C-shaped guide grooves of the coupling frame are buckled between the two guide rods and slide down at a uniform speed along the two guide rods until the coupling seat and the coupling frame are coupled; check the coupling condition to ensure that except for the positioning bevel 2 of the coupling frame and the positioning bevel 1 of the coupling seat and the flange bevel 2 and the flange bevel 1 of the coupling seat, the other parts of the coupling frame including the two C-shaped guide grooves are not in contact with the coupling seat, and the flange bevel 1 and the flange bevel 2 are completely overlapped and there is no misalignment, otherwise adjustments should be made; gently push the limit seat along the limit surface 1 of the submersible sewage pump so that the limit surface 2 and the limit surface 1 overlap symmetrically, and then fix the limit seat to the bottom of the pool. When fixing, there should be no additional force between the limit surface 2 and the limit surface 1, and the installation is now completed.

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