Volute axial clearance adjusting structure

Abstract

The utility model discloses a volute axial clearance adjusting structure which comprises a volute body, an inner step shell face A, an inner step shell face B, an inner step gasket A and an inner step gasket B. An inner step backing ring A and an inner step backing ring B are arranged between the volute body and an insert. The ring bodies of the inner-step backing ring A and the inner-step backing ring B can be expanded and thickened from the inside, a technician sets the screwing-out distance of the rotary supporting pipes in the inner-step backing ring A and the inner-step backing ring B according to the adjustment requirement of the axial gap between the volute body and the insert, the thickening amount of the inner-step backing ring A and the inner-step backing ring B is adjusted, and the inner-step backing ring A and the inner-step backing ring B can be adjusted. Therefore, a technician can conveniently use the inner step backing ring A and the inner step backing ring B which are adjustable in thickness to support the volute body and the insert during axial clearance adjustment, and the clearance adjustment mounting requirement during maintenance of the volute and the insert is met.

Description

Technical Field

[0001] The utility model relates to the technical field of volute repair, in particular to a volute axial clearance adjustment structure. Background Art

[0002] At present, most of the problems encountered by diffusers in practice are due to serious corrosion and wear of the volute, which makes the volute reference inaccurate, resulting in inaccurate control of the volute impeller installation shaft clearance after installation. Maintenance personnel need to repeatedly process and test the volute in the factory, and it is not convenient to adjust the installation clearance of the volute at the customer's site. If there is a deviation in the volute impeller installation shaft clearance, it must be returned to the factory for repair, which makes the use and maintenance of the volute extremely inconvenient. For this reason, we propose a volute axial clearance adjustment structure. Utility Model Content

[0003] The main purpose of the utility model is to provide a volute axial clearance adjustment structure, wherein an inner step gasket A and an inner step gasket B are arranged between the volute body and the inlay, and the ring bodies of the inner step gasket A and the inner step gasket B can be expanded and thickened from the inside. The technicians can adjust the thickening amount of the inner step gasket A and the inner step gasket B by setting the screw-out distance of the internal screw support tubes of the inner step gasket A and the inner step gasket B according to the axial clearance adjustment requirements between the volute body and the inlay, thereby facilitating the technicians to use the inner step gasket A and the inner step gasket B with adjustable thickness to support the axial clearance adjustment between the volute body and the inlay, and the inner step gasket A and the inner step gasket B with adjustable thickness can be used for installation support of different axial clearances between the volute body and the inlay within a certain thickness adjustment range, thereby meeting the clearance adjustment and installation requirements when repairing the volute and the inlay, and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A volute axial clearance adjustment structure, comprising a volute body, wherein an inner step shell surface A and an inner step shell surface B are sequentially arranged inwardly at the shell opening of the volute body, and further comprising an inner step gasket A and an inner step gasket B, wherein the inner step shell surface A and the inner step shell surface B are respectively inserted with the inner step gasket A and the inner step gasket B, and an inlay is inserted in the middle of the inner step gasket B, and a shell on one side of the inlay presses the inner step gasket A against the inner step shell surface A, the inner step gasket A and the inner step gasket B have the same sheet structure, and the inner step gasket B comprises a bottom gasket ring, a vertical ring body, a T-shaped base plate, a spiral support tube, a pressure plate, and a cover ring and a vertical connecting ring body, a T-shaped base plate is stuck and bonded in the bottom gasket ring, and a vertical ring body is protruded upward at the ring mouth of the bottom gasket ring and is stuck in the inner plate hole of the T-shaped base plate, a swivel hole for screwing on the swivel support pipe is provided on the surface of the raised plate body of the T-shaped base plate, a pressure plate is pressed on the top of the raised plate body of the T-shaped base plate, and a cover ring is covered on the outer cover of the pressure plate, a vertical connecting ring body bonded to the bottom gasket ring is integrally formed outside the ring edge of the cover ring, through holes are provided in the ring bodies of the bottom gasket ring, the T-shaped base plate, the pressure plate and the cover ring, and bolts are provided at the inlay to pass through the through holes of the inner step gasket B and are screwed in the volute body.

[0006] Furthermore, the inner tube cavity of the spiral support tube is protruded with a central rib plate;

[0007] By adopting the above technical solution, a flat-blade screwdriver can be inserted between the rotation support tube and the center rib plate, so as to screw the rotation support tube out at the rotation support hole.

[0008] Furthermore, the surface of the ring body of the bottom gasket ring is sunken with a useful ring groove, and the bottom plate body with a T-shaped base plate is inserted into the ring groove of the bottom gasket ring;

[0009] By adopting the above technical solution, the annular groove of the bottom gasket ring can be inserted into the bottom plate body of the T-shaped base plate for accommodation.

[0010] Furthermore, the tube body of the spin support tube is screwed into four groups of spin support holes on the surface of the T-shaped base plate;

[0011] By adopting the above technical solution, the swivel tube is swivel-connected and installed with four groups of swivel holes at the T-shaped base plate, thereby providing four points for supporting the pressure plate above the T-shaped base plate.

[0012] Furthermore, the disc bodies of the T-shaped base disc and the pressure disc are metal hard disc bodies;

[0013] By adopting the above technical solution, after the T-shaped base plate and the metal hard disk body of the pressure plate are opened by the rotating support tube, the inner step gasket A and the sheet support height of the inner step gasket can be expanded and increased.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model arranges an inner step gasket ring A and an inner step gasket ring B between the volute body and the inlay, and the ring bodies of the inner step gasket ring A and the inner step gasket ring B can be expanded and thickened from the inside. The technicians can adjust the thickness of the inner step gasket ring A and the inner step gasket ring B by setting the screw-out distance of the inner screw support tubes of the inner step gasket ring A and the inner step gasket ring B according to the axial clearance adjustment requirements between the volute body and the inlay, so as to facilitate the technicians to use the inner step gasket ring A and the inner step gasket ring B with adjustable thickness to support the axial clearance adjustment between the volute body and the inlay;

[0016] The inner step gasket A and the inner step gasket B, which can adjust their own thickness, can be used for installation support of different axial gaps between the volute body and the insert within a certain thickness adjustment range, meeting the gap adjustment and installation requirements when repairing the volute and the insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a volute axial clearance adjustment structure.

[0018] Figure 2 It is an exploded view of a volute axial clearance adjustment structure of the utility model.

[0019] Figure 3 The utility model is a schematic diagram of the structure of the inner step gasket B of the volute axial clearance adjustment structure.

[0020] Figure 4 The utility model is a schematic diagram of the structure of the inner step gasket A of the volute axial clearance adjustment structure.

[0021] Figure 5 It is an exploded view of an inner step gasket B of a volute axial clearance adjustment structure of the utility model.

[0022] Figure 6 This is a disassembled view of a pressure plate and a cover ring of a volute axial clearance adjustment structure of the utility model.

[0023] Figure 7 It is a schematic diagram of the disassembly of a bottom gasket ring and a T-shaped base plate of a volute axial clearance adjustment structure of the utility model.

[0024] In the figure: 1, volute body; 2, inner step shell surface A; 3, inner step shell surface B; 4, inner step gasket A; 5, inner step gasket B; 6, inlay; 7, bottom gasket ring; 8, vertical ring body; 9, T-shaped base plate; 10, spiral support hole; 11, spiral support tube; 12, center rib plate; 13, pressure plate; 14, cover ring; 15, vertical link body; 16, through hole. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-7 As shown, a volute axial clearance adjustment structure includes a volute body 1, wherein the volute body 1 is sequentially provided with an inner step shell surface A2 and an inner step shell surface B3 inwardly at the shell opening, and also includes an inner step gasket A4 and an inner step gasket B5, wherein the inner step shell surface A2 and the inner step shell surface B3 are respectively inserted with the inner step gasket A4 and the inner step gasket B5, and an inlay 6 is inserted in the middle of the inner step gasket B5, and a shell body on one side of the inlay 6 presses the inner step gasket A4 toward the inner step shell surface A2, the inner step gasket A4 and the inner step gasket B5 have the same sheet structure, and the inner step gasket B5 includes a bottom gasket ring 7, a vertical ring body 8, a T-shaped base plate 9, a spiral support tube 11, a pressure plate 13, a cover ring 14 and a vertical connection The ring body 15 has a T-shaped base plate 9 stuck in and bonded inside the bottom gasket ring 7, and a vertical ring body 8 is protruded upward at the ring mouth of the bottom gasket ring 7 and is stuck in the inner plate hole of the T-shaped base plate 9. The surface of the raised plate body of the T-shaped base plate 9 is provided with a rotation support hole 10 for screwing on the rotation support tube 11. A pressure plate 13 is pressed on the raised plate body of the T-shaped base plate 9, and a cover ring 14 is covered on the outer side of the ring edge of the cover ring 14. A vertical connecting ring body 15 adhered to the bottom gasket ring 7 is integrally formed. The bottom gasket ring 7, T-shaped base plate 9, pressure plate 13 and cover ring 14 are provided with a through hole 16 at the ring body. A bolt passes through the through hole 16 of the inner step gasket B5 at the inlay 6 and is screwed into the volute body 1.

[0027] The inner tube cavity of the spiral support tube 11 is protruded with a central rib plate 12;

[0028] By adopting the above technical solution, a flat-blade screwdriver can be inserted between the rotation support tube 11 and the center rib plate 12 , so as to screw the rotation support tube 11 out of the rotation support hole 10 .

[0029] The surface of the bottom gasket ring 7 is concave with a useful ring groove, and the bottom plate body with a T-shaped base plate 9 is inserted into the ring groove of the bottom gasket ring 7;

[0030] By adopting the above technical solution, the annular groove of the bottom gasket ring 7 can be inserted into the bottom plate body of the T-shaped base plate 9 for accommodation.

[0031] The tube body of the rotation support tube 11 is rotationally connected to four groups of rotation support holes 10 on the surface of the T-shaped base plate 9;

[0032] By adopting the above technical solution, the four groups of spiral support holes 10 are used to spirally install the spiral support tube 11 at the T-shaped base plate 9, thereby providing four points above the T-shaped base plate 9 to support the pressure plate 13.

[0033] Wherein, the disk bodies of the T-shaped base disk 9 and the pressure disk 13 are metal hard disk bodies;

[0034] By adopting the above technical solution, after the metal hard disk body of the T-shaped base plate 9 and the pressure plate 13 is opened by the rotating support tube 11, the sheet support height of the inner step gasket A4 and the inner step gasket 5 can be expanded and increased.

[0035] It should be noted that the utility model is a volute axial clearance adjustment structure. After the inner step gasket A4 and the inner step gasket B5 are arranged between the volute body 1 and the inlay 6, the inlay 6 can pass through the inner step gasket B5 and press the inner step gasket A4 to the inner step shell surface A2 of the volute body 1, and the inner step gasket B5 is pressed at the inner step shell surface B3. Then the inlay 6 is screwed into the volute body 1 through the through hole 16 of the inner step gasket B5 to ensure that the inner step gasket A4 and the inner step gasket B5 are pressed between the volute body 1 and the inlay 6 to increase the axial clearance adjustment between the inlay 6 and the volute body 1. When the inner step gasket A4 and the inner step gasket B5 need to be thickened, the bolts of the inlay 6 can be unscrewed, and then the inlay 6 can be removed from the volute body 1, and then the inner step gasket A4 and the inner step gasket B5 can be tilted and pressed from the ring mouth. The plate 13 and the T-shaped base plate 9 are connected to each other, so that the spiral support tube 11 at the T-shaped base plate 9 is exposed, and then a flat-blade screwdriver is used to insert the spiral support tube 11 and screw it in. With the help of the raised support of the spiral support tube 11 at the T-shaped base plate 9, the pressure plate 13 and the T-shaped base plate 9 are stretched open, and then the vertical connecting ring body 15 of the cover ring 14 and the ring body of the bottom gasket ring 7 are stretched, so that the ring bodies of the inner step gaskets A4 and the inner step gaskets B5 are thickened from the inside. The thickening amount of the inner step gaskets A4 and the inner step gaskets B5 requires technicians to set the screw-out distance of the spiral support tube 11 inside the inner step gaskets A4 and the inner step gaskets B5 according to the axial clearance adjustment requirements between the volute and the inlay 6, so as to facilitate technicians to use the inner step gaskets A4 and the inner step gaskets B5 with adjustable thickness to adjust the axial clearance between the volute body 1 and the inlay 6 according to the above steps.

[0036] It should be noted that the utility model is a volute axial clearance adjustment structure, and the components in the utility model are all components known to technical personnel in the field, and the structure and principle thereof are all known to technical personnel in the field through technical manuals or through conventional experimental methods.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A volute axial clearance adjustment structure, comprising a volute body (1), wherein an inner step shell surface A (2) and an inner step shell surface B (3) are sequentially arranged inwardly at a shell opening of the volute body (1), characterized in that: It also includes an inner step gasket A (4) and an inner step gasket B (5), wherein the inner step shell surface A (2) and the inner step shell surface B (3) are respectively inserted with the inner step gasket A (4) and the inner step gasket B (5), and an inlay (6) is inserted into the middle of the inner step gasket B (5), and a shell of one side of the inlay (6) presses the inner step gasket A (4) toward the inner step shell surface A (2); The inner step gasket A (4) and the inner step gasket B (5) have the same sheet structure. The inner step gasket B (5) comprises a bottom gasket ring (7), a vertical ring body (8), a T-shaped base plate (9), a rotation support tube (11), a pressure plate (13), a cover ring (14) and a vertical connecting ring body (15). The bottom gasket ring (7) is inserted and bonded with the T-shaped base plate (9), and the ring opening of the bottom gasket ring (7) is upwardly protruding with a vertical ring body (8) inserted into the inner plate hole of the T-shaped base plate (9). The protruding plate surface of the T-shaped base plate (9) is provided with a hole for rotationally connecting the rotation support tube. The screw support hole (10) of (11) is provided, a pressure plate (13) is pressed on the raised disc body of the T-shaped base disc (9), and a cover ring (14) is covered on the outer cover of the pressure plate (13), and a vertical connecting ring body (15) bonded to the bottom gasket ring (7) is integrally formed outside the ring edge of the cover ring (14), and a through hole (16) is opened on the ring body of the bottom gasket ring (7), the T-shaped base disc (9), the pressure plate (13) and the cover ring (14), and a bolt is screwed into the volute body (1) by passing through the through hole (16) of the inner step gasket B (5) at the inlay (6).

2. The volute axial clearance adjustment structure according to claim 1, characterized in that: The inner tube cavity of the spiral support tube (11) is protruded with a central rib plate (12).

3. The volute axial clearance adjustment structure according to claim 1, characterized in that: The surface of the ring body of the bottom gasket ring (7) is recessed with a useful ring groove, and the bottom plate body with a T-shaped base plate (9) is clamped in the ring groove of the bottom gasket ring (7).

4. The volute axial clearance adjustment structure according to claim 1, characterized in that: The tube body of the spin support tube (11) is screwed into four groups of spin support holes (10) on the surface of the T-shaped base plate (9).

5. The volute axial clearance adjustment structure according to claim 1, characterized in that: The disk bodies of the T-shaped base disk (9) and the pressure disk (13) are metal hard disk bodies.

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