CN112833088A

CN112833088A - Elastic sliding bearing and control valve thereof

Info

Publication number: CN112833088A
Application number: CN202110249920.7A
Authority: CN
Inventors: 崔家铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2021-05-25

Abstract

The invention relates to the technical field of bearings, in particular to an elastic sliding bearing and a control valve thereof, which comprise a bearing body, wherein the bearing body is provided with a notch for overcoming thermal expansion caused by temperature rise of the bearing body, the notch extends from the outer surface to the inner surface of the bearing body, and the bearing body is provided with a rebounding part which rebounds along with temperature reduction and keeps contact with an installation shaft.

Description

Elastic sliding bearing and control valve thereof

Technical Field

The invention relates to the technical field of bearings, in particular to an elastic sliding bearing and a control valve thereof.

Background

The bearing is applied to different parts of various devices, the existing standard bearing structurally comprises an outer ring, an inner ring, rolling bodies and a rolling body retainer, raceways are arranged on the outer periphery of the inner ring and the inner periphery of the outer ring, when the inner ring and the outer ring roll relatively, the rolling bodies roll in the raceways of the inner ring and the outer ring, and the inner ring and the outer ring are separated by the retainer to avoid mutual friction.

In mechanical products, rigid bearings cannot be used because of the large temperature variation range. Especially in the control valve industry, the valve rod or the rotating shaft is easily locked due to the large temperature range and the thermal expansion of the valve body at high temperature, so that the normal production is seriously affected, and sometimes even serious safety accidents are caused.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problems that a rigid bearing cannot be adopted due to a large temperature change range, and particularly in the control valve industry, the valve rod or the rotating shaft is easily locked due to thermal expansion of the valve body and the valve rod or the rotating shaft at high temperature due to the large temperature range, so that the normal production is seriously influenced, and sometimes even serious safety accidents are caused, an elastic sliding bearing and a control valve thereof are provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an elastic sliding bearing, includes the bearing body, be equipped with the breach that is used for overcoming its temperature rise and leads to thermal expansion on the bearing body, the breach extends to the internal surface by the surface of bearing body, be provided with on the bearing body along with the temperature reduction make the bearing body kick-back and with install the axle between keep the rebound portion of contact.

According to the invention, the bearing body is provided with the notch, the gap of the notch is reduced due to thermal expansion caused by temperature rise and fall, the valve rod or the rotating shaft can be prevented from being locked, the bearing body can be kept in contact with the rotating shaft or the valve rod when the temperature of the rebound part is reduced, the bearing body and the valve rod or the rotating shaft are kept in a certain matching state, and the stable and reliable operation of equipment is effectively ensured.

In order to realize the rebound part, the rebound part is a through hole formed on the bearing body. When the temperature reduces, the radial shrinkage of round hole and increase also make the round hole kick-back, and the bearing body contacts each other and reaches certain cooperation requirement between all the time and pivot or the valve rod.

In order to ensure that the bearing body rebounds stably and reliably, further, the through hole is radially provided with at least two circles along the bearing body. The bearing body is provided with at least two rings, so that the resilience of the bearing body is improved, and the resilience of the bearing body is stable and reliable.

For better resilience of the bearing body, the through holes of two adjacent circles are further arranged in a staggered mode. Through setting up crisscross each other between the adjacent two rings of through-holes for more places of bearing body can be by effectual resilience, guarantees that the bearing operation is reliable and stable.

For better resilience of the bearing body, further, the through hole is of a hexagonal structure. Through being the hexagon structure with the through-hole setting for form cellular structure on the bearing body, cellular structure is stable, has guaranteed that the bearing body operation is reliable and stable.

In order to ensure stable and reliable contact between the inside and the outside of the bearing, the bearing body further comprises an inner ring body and an outer ring body, the inner ring body is arranged in the outer ring body, the rebound part is arranged between the inner ring body and the outer ring body, the notch comprises a first opening arranged on the outer ring body and a second opening arranged on the inner ring body, the first opening extends from the outer surface of the outer ring body to the inner surface, and the second opening extends from the outer surface of the inner ring body to the inner surface. Through dividing into outer ring and interior ring with the bearing body to first opening on the outer ring and the second opening on the interior ring form the breach on the bearing body, when the temperature rose, outer ring and interior ring are heated the inflation, make the clearance between first opening and the second opening reduce, effectively prevent the phenomenon of locking from appearing, and when the cooling, the portion of kick-backing will effectively guarantee between interior ring and the pivot mutual contact cooperation.

In order to realize the rebounding of the outer ring body and the inner ring body, the rebounding part is a wave spring which is fixedly connected between the outer ring body and the inner ring body. By setting the rebound part as a wave spring, the wave spring is a thin-sheet annular elastic metal element consisting of a plurality of wave crests and wave troughs, which is referred to as a wave spring for short, the single-layer wave spring is an elastic element with a plurality of wave crests and wave troughs on one metal ring, and the multilayer wave spring looks like being composed of a plurality of single-layer wave springs and is similar to a cylindrical coil spring.

Further, the first openings and the second openings are arranged in a staggered mode.

In order to realize the rebounding of the outer ring body and the inner ring body, the rebounding portion comprises an annular partition plate and a radial auxiliary plate, the annular partition plate is arranged between the inner ring body and the outer ring body, the radial auxiliary plate is arranged between the outer ring body and the annular partition plate and between the inner ring body and the annular partition plate in the radial direction, and waist-shaped grooves are formed among the outer ring body, the annular partition plate and the radial auxiliary plate and among the inner ring body, the annular partition plate and the radial auxiliary plate. Through set up annular baffle and radial assistance board between interior annular body and the outer annular body to form waist type groove as resilience portion in annular baffle both sides, when the temperature rose, waist type groove kick-backed and increase, guaranteed that interior annular body and pivot or valve rod continue to contact and mutually support.

Furthermore, the annular partition plate is provided with a notch, and the notch is communicated with waist-shaped grooves on two sides of the annular partition plate.

A control valve comprises a valve body, a valve rod and an elastic sliding bearing, wherein the valve rod is installed on the valve body through the elastic sliding bearing, and the elastic sliding bearing adopts the elastic sliding bearing.

The invention has the beneficial effects that: when the elastic sliding bearing and the control valve thereof are used, the gap of the gap is reduced due to thermal expansion caused by temperature rise and fall by arranging the notch on the bearing body, so that the phenomenon of locking of the valve rod or the rotating shaft can be prevented, the bearing body can be kept in contact with the rotating shaft or the valve rod by the rebound part when the temperature is reduced, the bearing body and the valve rod or the rotating shaft are kept in a certain fit, the stable and reliable operation of equipment is effectively ensured, and the problem that the rigid bearing cannot be adopted due to a large temperature change range is avoided. Especially in the control valve industry, the valve rod or the rotating shaft is easy to be locked due to the large temperature range and the thermal expansion of the valve body at high temperature, so that the normal production is seriously affected, and sometimes even serious safety accidents are caused.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a first schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a second schematic structural diagram according to a first embodiment of the present invention;

FIG. 3 is a first schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is a second schematic structural view of a second embodiment of the present invention;

FIG. 5 is a schematic structural view of a third embodiment of the present invention;

FIG. 6 is a schematic structural view of a fourth embodiment of the present invention;

fig. 7 is a schematic structural view of the present invention in installation and use.

In the figure: 1. the bearing comprises a bearing body, 2, a notch, 3, a through hole, 4, an inner ring body, 5, an outer ring body, 6, a first opening, 7, a second opening, 8, a wave spring, 9, an annular partition plate, 10, a radial auxiliary plate, 11, a kidney-shaped groove, 12, a notch, 13, a valve body, 14, a valve rod, 15, a filler, 16 and a supporting sleeve.

Detailed Description

The invention is described in more detail below with reference to the following examples:

the present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

As shown in fig. 1-2, an elastic sliding bearing comprises a bearing body 1, wherein a notch 2 for overcoming thermal expansion caused by temperature rise of the bearing body 1 is arranged on the bearing body 1, the notch 2 extends from the outer surface to the inner surface of the bearing body 1, and a rebound part which enables the bearing body 1 to rebound along with temperature reduction and keeps contact with a mounting shaft is arranged on the bearing body 1.

The rebound part is a through hole 3 arranged on the bearing body 1. The through-hole 3 here is a circular hole.

The through hole 3 is radially provided with two circles along the bearing body 1. Of course the through-hole 3 may also be one or more turns.

Two adjacent circles of through holes 3 are arranged in a staggered mode.

As shown in fig. 7, a control valve includes a valve body 13, a valve stem 14, and an elastic sliding bearing, wherein the valve stem 14 is mounted on the valve body 13 through the elastic sliding bearing, and the elastic sliding bearing adopts the elastic sliding bearing. Here, the bearing body 1 is of an annular structure, the valve rod 14 is arranged on the valve body 13 and sealed by the packing 15, the bearing body 1 is arranged in the valve body 13, the valve rod 14 is arranged on the bearing body 1, the supporting sleeve 16 is arranged between two adjacent bearing bodies 1, and the bearing bodies 1 are positioned below the packing 15.

Above-mentioned elastic sliding bearing and control valve thereof are when using, the bearing body 1 of round hole, processing the round on holistic bearing body 1, the round hole of two rings or more rings, offer breach 2 on bearing body 1 simultaneously, when the temperature risees, the radial diameter increase of bearing body 1, the whole circumference size increase of bearing body 1, the whole size of pivot also can increase and extrude the inner circle of bearing body 1, and through the radial part of extrusion through-hole 3, the increase of bearing body 1 circumference size just also makes reducing between breach 2, prevent to lead to the phenomenon of pivot lock because of the axle footpath increase, when the temperature reduces, through-hole 3 kick-backs, make the contact and the cooperation between bearing body 1 inner circle keeping and the pivot, bearing body 1 circumference size reduces, breach 2 clearance increases.

Example 2

As shown in fig. 3 to 4, the difference between embodiment 2 and embodiment 1 is that: the through holes 3 are in a hexagonal structure. Set through-hole 3 to hexagon structure, form honeycomb structure between a plurality of through-holes 3, improve the stability of bearing body 1 structure.

Example 3

As shown in fig. 5, the difference between example 3 and examples 1 and 2 is that: the bearing body 1 comprises an inner ring body 4 and an outer ring body 5, the rebound part is arranged between the inner ring body 4 and the outer ring body 5, the inner ring body 4 is arranged in the outer ring body 5, the notch 2 comprises a first opening 6 formed in the outer ring body 5 and a second opening 7 formed in the inner ring body 4, the first opening 6 extends from the outer surface of the outer ring body 5 to the inner surface, and the second opening 7 extends from the outer surface of the inner ring body 4 to the inner surface.

The rebound part is a wave spring 8, and the wave spring 8 is fixedly connected between the outer ring body 5 and the inner ring body 4 through welding. A plurality of through holes 3 are respectively formed between the wave spring 8 and the inner ring body 4 and the outer ring body 5 on the two sides of the wave spring.

The first openings 6 and the second openings 7 are arranged in a staggered manner. The first opening 6 on the outer ring body 5 and the second opening 7 on the inner ring body 4 overcome the thermal expansion caused by temperature rise and fall, when the temperature rises, the axial diameter of the inner ring body 4 increases, the perimeter of the inner ring body 4 also increases, the wave spring 8 is compressed, the gap between the second openings 7 is reduced, when the temperature falls, the axial diameter of the inner ring body 4 is reduced, the wave spring 8 rebounds, the perimeter of the inner ring body 4 is reduced and the gap of the second opening 7 is increased, the perimeter of the outer ring body 5 also changes along with the change of the temperature, and the gap of the first opening 6 on the outer ring body 5 also changes along with the change of the temperature.

Example 4

As shown in fig. 6, example 4 differs from examples 3 and 2 and 1 in that: the rebound part comprises an annular partition plate 9 and a radial auxiliary plate 10, the annular partition plate 9 is arranged between the inner ring body 4 and the outer ring body 5, the radial auxiliary plate 10 is arranged between the outer ring body 5 and the annular partition plate 9 and between the inner ring body 4 and the annular partition plate 9 along the radial direction, and waist-shaped grooves 11 are formed among the outer ring body 5, the annular partition plate 9 and the radial auxiliary plate 10 and among the inner ring body 4, the annular partition plate 9 and the radial auxiliary plate 10.

The annular partition plate 9 is provided with a notch 12, and the notches 12 are used for communicating waist-shaped grooves 11 on two sides of the annular partition plate 9. Outer ring 5, inner ring body 4, annular baffle 9 and radial assistance board 10 formula precision casting as an organic whole or machining form, waist type groove 11 is provided with two rings or more, when the temperature rises, the axle diameter increase of outer ring body 5 and inner ring body 4, just also make the girth grow of outer ring body 5 and inner ring body 4, and transmit to inside and extrude waist type groove 11 through radial assistance board 10, just also make the clearance of first opening 6 on the outer ring body 5 and the second opening 7 on the inner ring body 4 reduce, the axle diameter of inner ring body 4 reduces when the temperature reduces, just also make waist type groove 11 kick-back, inner ring body 4 continues to keep in contact with the pivot, guarantee certain interference fit simultaneously.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An elastic sliding bearing comprising a bearing body (1), characterized in that: the bearing comprises a bearing body (1) and is characterized in that a notch (2) used for overcoming temperature rise of the bearing body to cause thermal expansion is arranged on the bearing body (1), the notch (2) extends from the outer surface of the bearing body (1) to the inner surface, and a rebound part which enables the bearing body (1) to rebound along with temperature reduction and keeps contact with an installation shaft is arranged on the bearing body (1).

2. An elastic slide bearing according to claim 1, characterized in that: the rebound part is a through hole (3) formed in the bearing body (1).

3. An elastic slide bearing according to claim 2, characterized in that: the through hole (3) is radially provided with at least two circles along the bearing body (1).

4. An elastic slide bearing according to claim 3, characterized in that: the adjacent two circles of through holes (3) are arranged in a staggered mode.

5. An elastic slide bearing according to claim 2, characterized in that: the through holes (3) are of a hexagonal structure.

6. An elastic slide bearing according to claim 1, characterized in that: the bearing body (1) comprises an inner ring body (4) and an outer ring body (5), the inner ring body (4) is arranged in the outer ring body (5), the rebound part is arranged between the inner ring body (4) and the outer ring body (5), the notch (2) comprises a first opening (6) arranged on the outer ring body (5) and a second opening (7) arranged on the inner ring body (4), the first opening (6) extends to the inner surface from the outer surface of the outer ring body (5), and the second opening (7) extends to the inner surface from the outer surface of the inner ring body (4).

7. An elastic slide bearing according to claim 6, characterized in that: the rebound part is a wave spring (8), and the wave spring (8) is fixedly connected between the outer ring body (5) and the inner ring body (4).

8. Elastic slide bearing according to claim 6 or 7, characterized in that: the first openings (6) and the second openings (7) are arranged in a staggered mode.

9. An elastic slide bearing according to claim 6, characterized in that: the rebound part comprises an annular partition plate (9) and a radial auxiliary plate (10), the annular partition plate (9) is arranged between the inner ring body (4) and the outer ring body (5), the radial auxiliary plate (10) is arranged between the outer ring body (5) and the annular partition plate (9) and between the inner ring body (4) and the annular partition plate (9) along the radial direction, and waist-shaped grooves (11) are formed among the outer ring body (5), the annular partition plate (9) and the radial auxiliary plate (10) and among the inner ring body (4), the annular partition plate (9) and the radial auxiliary plate (10).

10. An elastic slide bearing according to claim 9, characterized in that: the annular partition plate (9) is provided with a notch (12), and the notches (12) are communicated with the waist-shaped grooves (11) on two sides of the annular partition plate (9).

11. A control valve, characterized by: comprising a valve body (13), a valve stem (14) and an elastic sliding bearing, wherein the valve stem (14) is arranged on the valve body (13) through the elastic sliding bearing, and the elastic sliding bearing adopts the elastic sliding bearing as claimed in any one of claims 1-10.