CN218522817U

CN218522817U - Make things convenient for low pressure coal stuff pump of rotor dismouting

Info

Publication number: CN218522817U
Application number: CN202223011922.1U
Authority: CN
Inventors: 聂涛; 赵桂竹; 赵玲玲; 邓怀泽; 陈姣姣
Original assignee: Yunnan Fluid Planning And Research Institute Co ltd
Current assignee: Kunming Jiahe Technology Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-02-24
Anticipated expiration: 2032-11-11

Abstract

The utility model belongs to the technical field of the coal slurry pump, especially, relate to a make things convenient for low pressure coal slurry pump of rotor dismouting, including pump seat, pump body subassembly, bracket, rotor subassembly and motor, pump body subassembly sets up between bracket and pump seat, the bracket upper end is fixed with the motor, the inside driven rotor subassembly of being provided with of bracket and motor connection, the bracket forms for the concatenation of detachable multistage formula body, and bracket and rotor subassembly leave the clearance. The utility model discloses a detachable multistage formula bracket design to bracket and rotor subassembly contactless connection make things convenient for the dismouting of rotor subassembly, reduce whole atress, generally in the vertical and horizontal occasion.

Description

Make things convenient for low pressure coal stuff pump of rotor dismouting

Technical Field

The utility model belongs to the technical field of the coal slurry pump, especially, relate to a make things convenient for low pressure coal slurry pump of rotor dismouting.

Background

One of the key pumps in a coal-water slurry pressurized gasifier is the low pressure coal slurry pump.

The low-pressure coal slurry pump is divided into a vertical type and a horizontal type, and can be suitable for different occasions. One of the defects of the centrifugal low-pressure water coal slurry pump in the prior art is that the overall structure is complex, particularly the disassembly and assembly of the pump body, the rotor assembly and the bracket are complex, and the disassembly and assembly of the rotor assembly cannot be conveniently and rapidly realized.

As shown in fig. 1, in the prior art, the pump includes a motor, a bracket, a rotor assembly, a pump body, and other assemblies, the upper and lower ends of the bracket are respectively connected with the motor and the pump body, and the rotor assembly is connected and supported on the inner side of the bracket. The rotor subassembly is connected through the bracket and the pump body, to this kind of vertical coal slurry pump, because rotor subassembly and bracket lug connection, and the bracket plays the effect that supports the motor again, any part inefficacy can all cause both to damage, change any part, dismantle the many spare parts of whole bracket and inside rotor subassembly, very take very hard time, in dismouting rotor subassembly, need dismantle the multilayer connecting bolt subassembly, waste time and energy, and do not have the way to take out the rotor subassembly directly and use in horizontal coal slurry pump, also can't convenient and fast dismantles the rotor subassembly exactly, it is general in upright, in horizontal two kinds of operating modes.

And, because bracket and rotor subassembly are connected, the weight of motor also can be pressed on the rotor subassembly for in the pump actual operation operating mode, can receive extra effort, greatly reduced the rigidity of pump shaft, the too big atress of pump shaft makes parts such as the inside machine seals of rotor subassembly impaired, reduces the work efficiency of pump, life-span.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the background art, the utility model provides a make things convenient for low pressure coal stuff pump of rotor dismouting through detachable multistage formula bracket design to bracket and rotor subassembly contactless connection make things convenient for the dismouting of rotor subassembly, reduce the whole atress of rotor subassembly, generally in the vertical and horizontal occasion.

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model provides a make things convenient for low pressure coal stuff pump of rotor dismouting, includes pump seat, pump body subassembly, bracket, rotor subassembly and motor, pump body subassembly sets up between bracket and pump seat, the bracket upper end is fixed with the motor, the inside driven rotor subassembly of being connected with the motor that is provided with of bracket, its characterized in that: the bracket is formed by splicing a detachable multi-section type pipe body, and a gap is reserved between the bracket and the rotor assembly.

Preferably, the bracket is provided with an upper section and a lower section, and the upper section and the lower section comprise an upper bracket and a lower bracket.

Preferably, the bottom end of the upper bracket is provided with a first connecting part, a plurality of U-shaped first gaps are uniformly distributed on the circumference of the first connecting part, the top end of the lower bracket is provided with a second connecting part, a plurality of U-shaped second gaps are uniformly distributed on the circumference of the second connecting part, and the first gaps and the second gaps are in one-to-one correspondence; a bolt and nut component is hinged in the first notch.

Preferably, the end surfaces of the first connecting part and the second connecting part are in concave-convex fit connection.

Preferably, the lower end surface of the second notch extends to form a limiting part.

Preferably, the opening width of the first notch and the second notch is smaller than the width of the locking nut.

Preferably, the pump body subassembly includes the pump body, goes out water spiral case, impeller, hinders and seals stator and pump cover, the rotor subassembly includes the mount pad, pump body inlayer is provided with out the water spiral case, the pump body is hugged closely with play water spiral case upper end and is fixed with the pump cover, the pump cover is hugged closely to the bottom of mount pad and bracket and is fixed.

Preferably, the pump cover comprises a third annular connecting portion and a fourth annular connecting portion, the third connecting portion is connected with the pump body through a first screw, and the upper end face and the lower end face of the fourth connecting portion are respectively connected with the water outlet volute and the bracket through a second screw.

The utility model has the advantages of as follows and beneficial effect:

1. the utility model discloses in, the bracket forms for the concatenation of detachable multistage formula body, and the bracket does not contact with the rotor subassembly, and such design, in actual dismouting, can directly demolish the bracket upper segment, wholly put aside motor and upper bracket, then dismantle the hypomere bracket to directly take out the rotor subassembly, labour saving and time saving need not to carry out the dismouting to each part of rotor subassembly, can generally among the vertical and horizontal occasion. And, because bracket and rotor subassembly are not connected, the weight of motor can not be pressed on the rotor subassembly for in the pump actual operation operating mode, promoted the rigidity of pump shaft greatly, the work efficiency of promotion pump.

2. The utility model discloses in, the multistage formula concatenation of bracket is fixed through articulated bolt and nut subassembly, and such design can accelerate dismouting speed, labour saving and time saving more. During disassembly, only the bolt and nut assembly needs to be rotated, the upper section bracket and the lower section bracket are fixed through the locking nut, and the bolt and nut assembly does not need to be disassembled integrally.

Drawings

FIG. 1 is a schematic diagram of a low pressure slurry pump provided by the prior art;

fig. 2 is a schematic view of a low-pressure coal slurry pump provided by the present invention;

FIG. 3 is an enlarged view of a portion a of FIG. 2;

FIG. 4 is an enlarged view of the portion b of FIG. 2;

fig. 5 is a schematic connection diagram of the upper bracket and the lower bracket provided by the present invention;

an icon: 1-pump body, 11-pump base, 12-water inlet pipe, 13-water inlet bent pipe, 14-water outlet pipe, 2-water outlet volute, 3-impeller, 4-sealing guide vane, 5-pump cover, 5 a-fourth connecting part, 5 b-third connecting part, 51-first screw, 52-second screw, 53-third screw, 6-bracket, 61-lower bracket, 611-second connecting part, 612-annular groove, 613-second notch, 614-limiting part, 62-upper bracket, 621-first connecting part, 622-annular protrusion, 623-first notch, 7-motor, 71-coupler component, 8-rotor component, 8 a-cooling cavity, 81-mounting base, 82-lower bearing base, 83-lower bearing gland, 84-upper bearing base, 85-upper bearing cover, 86-mechanical sealing gland, 87-rotating shaft, 9-connecting screw rod, 91-pivot, 92-locking nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 2 to 4, the low-pressure coal slurry pump convenient for the disassembly and assembly of the rotor comprises a pump body assembly, a bracket 6, a rotor assembly 8 and a motor 7.

The pump body assembly comprises a pump body 1, a water outlet volute 2, an impeller 3, a blocking guide vane 4 and a pump cover 5, the upper end of the pump body 1 is open, the lower end of the pump body is provided with a water inlet pipe 12 in an extending mode, the side edge of the pump body is provided with a water outlet pipe 14 in an extending mode, and the water inlet pipe 12 is connected with a water inlet bent pipe 13. Wherein, the inner wall of the pump body 1 is provided with a water outlet volute 2, the impeller 3 is arranged in the inner cavity of the water outlet volute 2, and the upper end of the water outlet volute 2 is arranged in an open way. The upper end face of the water outlet volute 2 is lower than the upper end face of the pump body 1, so that a step table is formed, as shown in fig. 4, the pump cover 5 is fixed on the step table, the bottom end of the pump cover 5 is fixed with the blocking guide vane 4, the bottom end of the bracket 6 is fixed on the upper end face of the pump cover 5, and the motor 7 is fixed on the upper end face of the bracket 6.

The rotor assembly 8 includes a mounting seat 81, a lower bearing seat 82, a lower bearing cover 83, an upper bearing seat 84, an upper bearing cover 85, a mechanical seal cover 86, a rotating shaft 87, and the like. Wherein, the upper end of the mounting seat 81 is provided with a mounting groove, an upper bearing seat 84 is detachably arranged in the mounting groove, a bearing is arranged in the upper bearing seat 84, and an upper bearing pressure cover 85 is fixed at the upper end of the upper bearing seat 84 for sealing; the interlude of mount pad 81 is provided with step 82, the inside bearing that is provided with of step 82, step 82 and mount pad 81 integrated into one piece are made, pivot 87 sets up inside mount pad 81, support fixedly through last bearing housing 84 and step 82, the bottom of step 82 is provided with bearing gland 83 and seals down to at the inside cooling chamber 8a that forms of mount pad 81 of last bearing housing 84 and step 82, can set up cooling module such as water-cooling, oil cooling in this cooling chamber 8 a. For example, the cooling can be achieved by providing water/oil inlet/outlet pipes on the mounting seat 81. The upper end of the rotating shaft 87 is connected with the motor 7 through the coupling assembly 71 for transmission, and the lower end of the rotating shaft 87 is connected with the impeller 3. The inner cavity of the pump cover 5 is provided with a mechanical seal assembly, and the inner side of the upper end of the pump cover 5 is provided with a mechanical seal gland 86.

Pump body subassembly sets up between bracket 6 and pump seat 11, and bracket 6 upper end is fixed with motor 7, and bracket 6 is inside to be provided with to be connected driven rotor subassembly 8 with motor 7, and bracket 6 forms for the concatenation of detachable multistage formula body, is provided with the working hole on the body, and the easy access dismouting, and bracket 6 does not contact with rotor subassembly 8 to make things convenient for dismouting rotor subassembly 8.

As further shown in fig. 4, the pump cover 5 includes a third connecting portion 5b and a fourth connecting portion 5a, the third connecting portion 5b is located on the outer side, and the height of the third connecting portion 5b is higher than that of the fourth connecting portion 5a, so as to form a step table, and the bottom end of the pump cover 5 is in concave-convex fit with the third connecting portion 5b and the fourth connecting portion 5 a. The third connecting portion 5b is connected to the pump body 1 by a first screw 51, the lower end surface of the fourth connecting portion 5a is connected to the outlet volute 2 by a second screw 52, and the upper end surface of the fourth connecting portion 5a is connected to the lower bracket 61 by the second screw 52. The bottom end of the attachment base 81 is connected to the pump cover 5 by a third screw 53.

Such design, through second screw 52, can be with bracket 6, pump cover 5, the unsmooth conjunction of 1 three of the pump body is connected fixedly together, realize firm reliable connectivity more, and when dismantling rotor subassembly 8 in the back, only need get off second screw 52, can dismantle bracket 6 and motor 7, and pump body 1 and pump cover 5 are still fixed through first screw 51, then dismantle third screw 53 again, and shaft coupling subassembly 71, just can directly take out rotor subassembly 8, such dismantlement, need not to carry out the dismouting to 8 each parts of rotor subassembly, can generally be in the vertical and horizontal occasion. And, because bracket 6 and rotor subassembly 8 do not connect, contactless, the weight of motor 7 just can not be pressed on rotor subassembly 8 for in the pump actual operation operating mode, rotor subassembly 8 can not receive extra effort, thereby has guaranteed the rigidity of pump shaft, guarantees the normal operating of parts such as the inside machine seal of rotor subassembly 8, and the work efficiency of elevator pump promotes the life-span.

Further, the bracket 6 is provided with upper and lower sections including an upper bracket 62 and a lower bracket 61.

As shown in fig. 3 and 5, an annular first connecting portion 621 is disposed at the bottom end of the upper bracket 62, a plurality of U-shaped first notches 623 are uniformly distributed on the circumference of the first connecting portion 621, an annular second connecting portion 611 is disposed at the top end of the lower bracket 61, a plurality of U-shaped second notches 613 are uniformly distributed on the circumference of the second connecting portion 611, and the first notches 623 and the second notches 613 correspond to each other one by one; the first notch 623 is hinged with a bolt and nut assembly for fixedly connecting the upper bracket 62 and the lower bracket 61. The opening width of the first notch 623 and the second notch 613 is smaller than the width of the lock nut 92.

The bolt and nut assembly comprises a connecting screw rod 9, a pivot shaft 91 and a locking nut 92, wherein the connecting screw rod 9 is rotatably arranged in the first notch 623 through the pivot shaft 91, the widths of the first notch 623 and the second notch 613 are slightly larger than the width of the connecting screw rod 9, so that the connecting screw rod 9 can rotatably move in the first notch 623 and the second notch 613, and the length of the connecting screw rod 9 is larger than the total height of the first connecting part 621 and the second connecting part 611. As shown in fig. 3, when the connecting screw 9 is rotated to the bottom end, the locking nut 92 is tightened to fix the first connecting portion 621 and the second connecting portion 611 together. For disassembly, the lock nut 92 is simply loosened and the bolt and nut assembly rotated in the direction of the arrow in FIG. 4. Such design further makes things convenient for the dismantlement of bracket 6, during the dismouting, only need rotatory bolt and nut subassembly, with upper bracket 62 and bottom bracket 61 through lock nut 92 fixed can, and need not whole dismouting bolt, nut subassembly, dismantle the back with upper bracket 62 and bottom bracket 61 fast, can wholly remove upper bracket 62 and motor 7 away, then just can convenient and fast, laborsaving dismantlement rotor subassembly 8.

Further, the bottom end and the inner side of the first connecting portion 621 extend to form an annular protrusion 622, and the upper end and the inner side of the second connecting portion 611 are concavely provided with an annular groove 612, so that the end surfaces of the first connecting portion 621 and the second connecting portion 611 are in concave-convex fit connection, and the fixing strength is ensured.

Furthermore, a limiting portion 614 is extended from the lower end surface of the second notch 613, and the design of the limiting portion 614 enables the position of the lock nut 92 to be limited by the limiting portion 614 after the lock screw is screwed, so that the connection strength of the bolt-nut assembly is ensured, and the bolt-nut assembly is prevented from loosening.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a make things convenient for low pressure coal stuff pump of rotor dismouting, includes pump seat, pump body subassembly, bracket, rotor subassembly and motor, pump body subassembly sets up between bracket and pump seat, the bracket upper end is fixed with the motor, the inside driven rotor subassembly of being connected with the motor that is provided with of bracket, its characterized in that: the bracket is formed by splicing a detachable multi-section type pipe body, and a gap is reserved between the bracket and the rotor assembly.

2. The low-pressure coal slurry pump convenient for the disassembly and assembly of the rotor as claimed in claim 1, wherein: the bracket is provided with an upper section and a lower section, and comprises an upper bracket and a lower bracket.

3. The low pressure slurry pump facilitating rotor disassembly and assembly as claimed in claim 2, wherein: the bottom end of the upper bracket is provided with a first connecting part, a plurality of U-shaped first gaps are evenly distributed on the circumference of the first connecting part, a second connecting part is arranged on the top end of the lower bracket, a plurality of U-shaped second gaps are evenly distributed on the circumference of the second connecting part, and the first gaps and the second gaps are in one-to-one correspondence; a bolt and nut component is hinged in the first notch.

4. The low pressure coal slurry pump convenient for the disassembly and assembly of the rotor as claimed in claim 3, wherein: the end faces of the first connecting part and the second connecting part are in concave-convex matching connection.

5. The low-pressure coal slurry pump convenient for disassembly and assembly of the rotor as claimed in claim 3, wherein: the lower end face of the second notch extends to form a limiting part.

6. The low pressure coal slurry pump convenient for the disassembly and assembly of the rotor as claimed in claim 3, wherein: the opening width of the first notch and the second notch is smaller than the width of the locking nut.

7. The low-pressure coal slurry pump convenient for disassembly and assembly of the rotor as claimed in claim 1, wherein: the pump body subassembly includes the pump body, goes out water spiral case, impeller, hinders and seals stator and pump cover, the rotor subassembly includes the mount pad, the pump body inlayer is provided with out the water spiral case, the pump cover is hugged closely and is fixed with to the pump body and play water spiral case upper end, the pump cover is hugged closely and is fixed to the bottom of mount pad and bracket.

8. The low-pressure coal slurry pump convenient for disassembly and assembly of the rotor as claimed in claim 7, wherein: the pump cover comprises an annular third connecting portion and an annular fourth connecting portion, the third connecting portion is connected with the pump body through a first screw, and the upper end face and the lower end face of the fourth connecting portion are connected with the water outlet volute and the bracket through second screws respectively.