CN218093565U

CN218093565U - Adjustable balance disc

Info

Publication number: CN218093565U
Application number: CN202222212972.XU
Authority: CN
Inventors: 刘毅钊; 易先明; 刘明骁; 曹健; 郭贝贝; 轩露; 林莉; 张彬彬
Original assignee: Hubei Institute Of Industrial Automation Technicians; Hubei Yangzijiang Pump Industry Wuhan Co ltd; Hubei Yangzijiang Pump Industry Co ltd
Current assignee: Hubei Institute Of Industrial Automation Technicians; Hubei Yangzijiang Pump Industry Wuhan Co ltd; Hubei Yangzijiang Pump Industry Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-20
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses an adjustable balance disc, which comprises a main disc body which is slidably arranged in a pump body, wherein the left side and the right side of the main disc body are respectively provided with an adjusting mechanism and an auxiliary sealing structure, the auxiliary sealing structure and the adjusting mechanism are fixedly connected in the pump body, and the right side of the main disc body is tightly pressed on the left side of the auxiliary sealing structure to realize sealing; adjustment mechanism includes the loop type mount of connecting in the pump body inside through bolt fixed connection, and the inside threaded connection of loop type mount has adjusting bolt, and the surface of adjusting bolt double-screw bolt just is located the fixedly connected with preforming between loop type mount and the main disc body, the utility model relates to a mechanical pump part technical field. This adjustable balance plate through set up adjustment mechanism in main dish body left side, but its elastic adjustment carries out the auxiliary regulation to the pressure that main dish body was applyed, can be according to pressure needs, cooperation actual pressure differential, guarantees to the sufficient packing force of main dish body, and the elastic adjustment does not also influence and cushions when vibrating to the right side axle.

Description

Adjustable balance disc

Technical Field

The utility model relates to a mechanical pump part technical field specifically is an adjustable balance disc.

Background

A balance disk is a disk of a centrifugal compressor placed behind (high pressure side of) the last stage impeller, which partially counteracts the rotor axial force with the axial thrust generated by the pressure difference of the gas on its two sides. The pressure on one side is almost the gas pressure (high pressure) in the gap of the last-stage impeller wheel disc, and the pressure on the other side is usually communicated with the air suction chamber of the machine, and is atmospheric pressure or intake pressure (low pressure). The pressure difference between the two sides makes the rotor to bear one force opposite to the axial force, and the magnitude of the force is determined by the force bearing area of the balance disc. The outer circumference of the balance disc is fitted with a sealing means to maintain the disc at a pressure differential. In order to avoid the back-and-forth movement of the rotor during operation, only a part of the axial force is balanced, and the rest of the axial force is borne by the thrust bearing.

The existing balance disc is only a metal disc generally, a sealing ring is arranged on the outer circular surface of the balance disc for sealing, but the problem that the sealing ring is not tight in sealing due to machining errors, long-time use aging and other reasons can occur, so that pressure difference is insufficient, the rotor shaft is unstable in operation, and when the balance disc is in actual use, unstable conditions can exist in power of equipment, pressure of a high-pressure end of the balance disc is unstable, and pressure difference can be influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an adjustable balance plate has solved that the sealing washer is sealed not tight can influence balance plate both sides pressure differential, receives equipment power influence, and balance plate both sides pressure differential also can unstable problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an adjustable balance disc, includes the main disk body of slidable mounting in the pump body inside, the left and right sides of main disk body is provided with adjustment mechanism and supplementary seal structure respectively, and the equal fixed connection of supplementary seal structure and adjustment mechanism is inside the pump body, the main disk body right side is tight and is realized sealedly in supplementary seal structure left side.

Adjustment mechanism includes the loop type mount of fixing at the pump body inside through bolt, the inside threaded connection of loop type mount has adjusting bolt, the surface of adjusting bolt double-screw bolt just is located the fixedly connected with preforming between loop type mount and the main disk body, the left side threaded connection of main disk body has the reference column coaxial with adjusting bolt, the cover is equipped with the spring between the outside of reference column and adjusting bolt double-screw bolt, and the both ends of spring support preforming and main disk body respectively tightly.

Preferably, the adjusting bolts, the springs and the positioning columns are correspondingly arranged in a plurality of numbers and are circumferentially and uniformly distributed.

Preferably, the auxiliary sealing structure comprises a positioning ring fixedly connected inside the pump body through a bolt, and the inner side of the positioning ring is fixedly connected with a rubber sleeve through a bolt.

Preferably, the left side of the rubber sleeve is bent to cover the left side of the positioning ring and is pressed among the positioning ring, the inner surface of the pump body and the main disc body.

Preferably, the right half part of the outer circular surface of the main disc body is separately set as an outer conical surface, and the inner surface of the rubber sleeve is provided with an inner conical surface matched with the outer conical surface.

Preferably, a sealing rubber ring is embedded in the left side of the outer circular surface of the main disc body in a sleeved mode, and a shaft sleeve is integrally machined in the middle of the right side of the main disc body.

Advantageous effects

The utility model provides an adjustable balance disc. Compared with the prior art, the method has the following beneficial effects:

(1) This adjustable balance plate, through set up adjustment mechanism in main dish body left side, but its elastic adjustment is to the pressure that main dish body was applyed, can be according to pressure needs, cooperates actual pressure differential to carry out supplementary regulation, guarantees to the sufficient packing force of main dish body, and elastic adjustment does not also influence and cushions simple operation convenience when shaking right side axle.

(2) This adjustable balance disc, through set up supplementary seal structure on main disc body right side, on the basis of the sealed rubber ring in main disc body itself is taken, the sealed of a gum cover has been increased, when the pressure that receives on main disc body left side is big more, it is inseparable more that press between its and the gum cover, sealed effect is better, and both contact surfaces are the conical surface, main disc body moves the power that has the outside expansion of gum cover when removing right, and then make the sealed effect between gum cover and the pump body inner wall also better, the atmospheric pressure difference of both sides has been guaranteed.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

fig. 3 is the local structural schematic diagram of the main tray body and the auxiliary sealing structure of the present invention.

In the figure: 1-main disc body, 11-external conical surface, 12-sealing rubber ring, 13-shaft sleeve, 2-auxiliary sealing structure, 21-positioning ring, 22-rubber sleeve, 23-internal conical surface, 3-adjusting mechanism, 31-annular fixing frame, 32-adjusting bolt, 33-pressing sheet, 34-positioning column, 35-spring and 4-pump body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an adjustable balance disc, includes that slidable mounting is at the inside main disk body 1 of the pump body 4, and the embedded cover in left side of the outer disc of main disk body 1 is equipped with sealed rubber ring 12, and the middle integrated into one piece processing on main disk body 1 right side has axle sleeve 13, and the left and right sides of main disk body 1 is provided with adjustment mechanism 3 and supplementary seal structure 2 respectively, and supplementary seal structure 2 and the equal fixed connection of adjustment mechanism 3 inside the pump body 4, and the main disk body 1 right side compresses tightly realizes sealedly in supplementary seal structure 2 left side.

Adjustment mechanism 3 includes the loop type mount 31 of connecting in the pump body 4 inside through bolt fixed connection, the inside threaded connection of loop type mount 31 has adjusting bolt 32, the surface of adjusting bolt 32 double-screw bolt just is located fixedly connected with preforming 33 between loop type mount 31 and the main disc body 1, the left side threaded connection of main disc body 1 has reference column 34 coaxial with adjusting bolt 32, the cover is equipped with spring 35 between the outside of reference column 34 and adjusting bolt 32 double-screw bolt, and the both ends of spring 35 support tight preforming 33 and main disc body 1 respectively, adjusting bolt 32, spring 35 all corresponds with reference column 34 and is provided with a plurality ofly, and hoop evenly distributed. Through set up adjustment mechanism 3 in main disk body 1 left side, but its elastic adjustment is to the pressure that main disk body 1 was applyed, can be according to pressure needs, cooperates actual pressure differential to carry out the auxiliary regulation, guarantees the sufficient packing force to main disk body 1, and elastic adjustment does not also influence and cushions simple operation convenience when vibrating to the right side axle.

The auxiliary sealing structure 2 comprises a positioning ring 21 fixedly connected to the inside of the pump body 4 through a bolt, a rubber sleeve 22 is fixedly connected to the inner side of the positioning ring 21 through a bolt, the left side of the rubber sleeve 22 is bent to cover the left side of the positioning ring 21 and is compressed between the positioning ring 21, the inner surface of the pump body 4 and the main disc body 1, the right half part of the outer circular surface of the main disc body 1 is divided into an outer conical surface 11, and an inner conical surface 23 matched with the outer conical surface 11 is arranged on the inner surface of the rubber sleeve 22. Through setting up supplementary seal structure 2 on main disk body 1 right side, on the basis of main disk body 1 self sealed rubber ring 12 in area, the sealed of a gum cover 22 has been increased, when the pressure that receives in main disk body 1 left side is big more, it is inseparable more of pressure between 22 with the gum cover, sealed effect is better, and both contact surfaces are the conical surface, main disk body 1 moves the power with the outside expansion of gum cover 22 occasionally to the right side, and then make the sealed effect between the 4 inner walls of the pump body of gum cover 22 also better, the atmospheric pressure difference of both sides has been guaranteed.

And those not described in detail in this specification are well within the skill of those in the art.

When the auxiliary sealing structure is used, the positioning ring 21 and the rubber sleeve 22 of the auxiliary sealing structure 2 are fixed in the pump body 4 together by using bolts, then the main disc body 1 is pushed into the pump body 4 and tightly presses the rubber sleeve 22, then the ring-shaped fixing frame 31 is fixed in the pump body 4 by using bolts on the left side, the spring 35 is sleeved outside the adjusting bolt 32 and outside the positioning column 34 which is screwed on the left side of the main disc body 1 in advance, the adjusting bolt 32 is rotated by using a digital display torque wrench to adjust the tightness of the adjusting bolt, and the main disc body 1 is indirectly tightly pressed by using the spring 35 to improve the sealing property.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An adjustable balance disc comprising a main disc (1) slidably mounted inside a pump body (4), and characterized in that: the left side and the right side of the main disc body (1) are respectively provided with an adjusting mechanism (3) and an auxiliary sealing structure (2), the auxiliary sealing structure (2) and the adjusting mechanism (3) are both fixedly connected inside the pump body (4), and the right side of the main disc body (1) is tightly pressed on the left side of the auxiliary sealing structure (2) to realize sealing;

adjustment mechanism (3) include ring type mount (31) inside at the pump body (4) through bolt fixed connection, the inside threaded connection of ring type mount (31) has adjusting bolt (32), the surface of adjusting bolt (32) double-screw bolt just is located fixedly connected with preforming (33) between ring type mount (31) and main disc body (1), the left side threaded connection of main disc body (1) has reference column (34) coaxial with adjusting bolt (32), the cover is equipped with spring (35) between the outside of reference column (34) and adjusting bolt (32) double-screw bolt, and the both ends of spring (35) support respectively tight preforming (33) and main disc body (1).

2. An adjustable balance disc as claimed in claim 1 wherein: adjusting bolt (32), spring (35) and reference column (34) all correspond and are provided with a plurality ofly, and hoop evenly distributed.

3. An adjustable balance disc according to claim 1 wherein: the auxiliary sealing structure (2) comprises a positioning ring (21) fixedly connected to the inside of the pump body (4) through a bolt, and the inner side of the positioning ring (21) is fixedly connected with a rubber sleeve (22) through a bolt.

4. An adjustable balance disc according to claim 3 wherein: the left side of the rubber sleeve (22) is bent to cover the left side of the positioning ring (21) and is pressed between the positioning ring (21), the inner surface of the pump body (4) and the main disc body (1).

5. An adjustable balance disc as claimed in claim 4 wherein: the right half part of the outer circular surface of the main disc body (1) is separately set as an outer conical surface (11), and the inner surface of the rubber sleeve (22) is provided with an inner conical surface (23) matched with the outer conical surface (11).

6. An adjustable balance disc as claimed in claim 1 wherein: the left side of the outer disc of the main disc body (1) is embedded with a sealing rubber ring (12), and a shaft sleeve (13) is integrally machined in the middle of the right side of the main disc body (1).