CN113719688B

CN113719688B - Adjustable flow-limiting ring with good flow-limiting effect

Info

Publication number: CN113719688B
Application number: CN202111168534.1A
Authority: CN
Inventors: 孙芳良
Original assignee: Suzhou High Tech Zone Dingzheng Precision Electro Mechanical Co ltd
Current assignee: Suzhou High Tech Zone Dingzheng Precision Electro Mechanical Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-10-25
Anticipated expiration: 2041-10-08
Also published as: CN113719688A

Abstract

The application discloses current-limiting ring with adjustable current-limiting effect is good, including limiting plate, through-hole, go up ring body, spacing collar, rubber current-limiting ring, fixed block, lower ring body, built-in ring, connecting strip, current-limiting post, connecting block, the lantern ring, dead lever, buffer beam, pilot pin, anchor collar, packing ring, draw-in groove, connecting pipe, water conservancy diversion piece, guiding gutter, antiskid circle and accessory plate. The limiting ring and the gasket can increase the contact area with the rubber current-limiting ring, so that the installation of the rubber current-limiting ring is reinforced, the rubber current-limiting ring is prevented from loosening in the upper ring body, and the current-limiting effect in the current-limiting ring is ensured; the upper ring body and the lower ring body are detachable, so that the inner part of the upper ring body can be conveniently detached and maintained, the reinforcing ring can support the built-in ring, and the built-in ring can be conveniently installed and used in the upper ring body; the current-limiting column is convenient to adjust in the installation of the upper ring body, the limiting plate and the connecting pipe can limit and reinforce the top of the current-limiting column, the discharge of the controllable fluid of the limiting plate can be controlled, and the overall current-limiting effect of the current-limiting ring is further improved.

Description

Adjustable flow-limiting ring with good flow-limiting effect

Technical Field

The application relates to the field of flow-limiting rings, in particular to an adjustable flow-limiting ring with a good flow-limiting effect.

Background

The flow-limiting ring is an important part on equipment such as a valve, a pipeline, a water heater and the like, is used for limiting the flow of fluid to obtain a preset flow, plays a role in protecting the equipment such as the valve, the pipeline, the water heater and the like, and also plays a role in stabilizing fluid data.

The inside current-limiting ring of restrictor ring lacks spacing reinforced structure, and is difficult for not hard up easily, influences the current-limiting effect of restrictor ring, and the lower ring body is not quick detachable, is unfavorable for going up the inside maintenance of ring body, and the mounting height of the inside current-limiting post of restrictor ring is difficult for adjusting, and its top lacks detachable limit structure, probably produces the influence to the current-limiting effect. Therefore, an adjustable flow restriction ring with good flow restriction effect is provided for solving the problems.

Disclosure of Invention

The adjustable current-limiting ring with good current-limiting effect is used for solving the problem that a current-limiting ring inside the current-limiting ring in the prior art lacks a limiting reinforcing structure, is easy to loosen, influences the current-limiting effect of the current-limiting ring, is not easy to disassemble by a lower ring body, is not favorable for overhauling the inner part of an upper ring body, is difficult to adjust the installation height of a current-limiting column inside the current-limiting ring, lacks a detachable limiting structure at the top of the current-limiting ring, and possibly has influence on the current-limiting effect.

According to one aspect of the application, an adjustable current-limiting ring with a good current-limiting effect is provided, and the adjustable current-limiting ring comprises a lower ring body, a current-limiting mechanism and an adjusting mechanism, wherein an upper ring body is installed at the top of the lower ring body, and two fixed blocks are fixedly connected to the bottom of the upper ring body; the flow limiting mechanism comprises a limiting plate, a rubber flow limiting ring and a flow guide block, the limiting plate is sleeved at the top of a connecting pipe, the connecting pipe is clamped at the top of a flow limiting column, the flow limiting column is fixedly connected with the flow guide block, the rubber flow limiting ring is sleeved outside the flow guide block, and a connecting strip is arranged at the bottom of the rubber flow limiting ring; the adjusting mechanism is installed in the lower ring body, the diameter of the lower ring body is larger than that of the upper ring body, and the lower ring body is connected with the upper ring body through a positioning bolt.

Further, a through hole is formed in the limiting plate, the limiting plate is connected to the upper ring body in an overlapping mode, the diameter of the limiting plate is larger than that of the connecting pipe, the bottom of the connecting pipe is clamped on the connecting block, the connecting block is fixedly connected to the bottom of the inner cavity of the clamping groove, and the clamping groove is formed in the top of the flow-limiting column.

Furthermore, a gasket is lapped on the top of the rubber current-limiting ring, the gasket is fixedly connected to the inner wall of the upper ring body, a limiting ring is clamped on the side wall of the upper ring body, the limiting ring is fixedly connected to the inner wall of the upper ring body, and an arc-shaped groove is formed in the inner side of the limiting ring.

Furthermore, the number of the flow guide blocks is four, flow guide grooves are formed among the flow guide blocks and are located above the connecting strips, one ends of the connecting strips are fixedly connected to the flow limiting columns, the other ends of the connecting strips are fixedly connected to the inner wall of the built-in ring, and the number of the connecting strips is four.

Furthermore, an auxiliary plate is fixedly connected between the four connecting strips, the thickness of the auxiliary plate is smaller than that of the flow guide block, the auxiliary plate is located on one side, away from the built-in ring, of the connecting strips, the built-in ring is clamped inside the upper ring body, and the thickness of the built-in ring is larger than that of the upper ring body.

Furthermore, the inside reinforcing ring that has cup jointed of upper ring body, the reinforcing ring is located between upper ring body and the built-in ring, the rigid coupling has the buffer beam on the reinforcing ring, the buffer beam overlap joint is at built-in ring bottom, just reinforcing ring bottom rigid coupling is on lower ring inner wall.

Further, adjustment mechanism includes the lantern ring, dead lever and antiskid circle, the lantern ring cup joints outside the current-limiting post, the rigid coupling has the antiskid circle on the lantern ring inner wall, the thickness of antiskid circle is less than the lantern ring, pass through threaded connection between antiskid circle and the current-limiting post.

Furthermore, fixed rods are fixedly connected between the lantern ring and the inner wall of the lower ring body, the fixed rods are distributed at intervals of 90 degrees, and the length of each fixed rod is larger than that of each connecting strip.

Furthermore, the fixed block is penetrated by a positioning bolt, the bottom of the positioning bolt is connected with the lower ring body through threads, and the height of the lower ring body is smaller than that of the built-in ring.

Furthermore, the flow limiting column is divided into an upper part and a lower part, wherein the longitudinal section of the upper part of the flow limiting column is trapezoidal, an external thread is arranged on the lower part of the flow limiting column, and the lower part of the flow limiting column is positioned below the flow guide block.

Through the above-mentioned embodiment of this application, current-limiting mechanism and adjustment mechanism have been adopted, the problem that the inside current-limiting ring of restrictor ring lacks spacing reinforced structure has been solved, it is easy not hard up, influence the current-limiting effect of restrictor ring, and the mounting height of the inside current-limiting post of restrictor ring is difficult for adjusting, limit structure is lacked at its top, the problem that probably produces the influence to the current-limiting effect, it has had the restricted flow ring and has the auxiliary structure, it is difficult not hard up, the mounting height of current-limiting post is adjustable, its top has spacing reinforced structure, can promote the effect of current-limiting function.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of an overall structure of an embodiment of the present application;

FIG. 3 is a schematic view of a reinforcing ring according to an embodiment of the present application;

FIG. 4 is a schematic view of a collar structure according to an embodiment of the present application;

fig. 5 is a schematic structural view of a flow guide block according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an auxiliary plate according to an embodiment of the present application.

In the figure: 1. a limiting plate; 2. a through hole; 3. an upper ring body; 4. a limiting ring; 5. a rubber current-limiting ring; 6. a fixed block; 7. a lower ring body; 8. internally installing a ring; 9. a connecting strip; 10. a flow-limiting column; 11. connecting blocks; 12. a collar; 13. a fixing rod; 14. a buffer rod; 15. positioning bolts; 16. reinforcing rings; 17. a gasket; 18. a card slot; 19. a connecting pipe; 20. a flow guide block; 21. a diversion trench; 22. an anti-slip ring; 23. an auxiliary plate.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The flow restriction ring in the present embodiment may be applied to various mounting structures, for example, the following mounting structure is provided in the present embodiment, and the flow restriction ring in the present embodiment may be used to be mounted by the following mounting structure.

This mounting structure includes: the valve body and install the inside end cap of valve body, the middle part of end cap is provided with the current-limiting chamber, a plurality of inlet openings have been seted up on the inner wall in current-limiting chamber, the lower extreme in current-limiting chamber is provided with the current-limiting ring, the upper end of end cap is the connecting block, be provided with a plurality of chucking pieces on the connecting block, be provided with in the valve body with the installing port of end cap looks adaptation, the inside of installing port be provided with a plurality of with the draw-in groove of chucking piece looks adaptation, a plurality of with the groove of stepping down of chucking piece looks adaptation is seted up in the outside of installing port. In the design, the plug and the valve body are connected and fixed by matching the clamping block and the clamping groove, so that the structure is simple and the disassembly and assembly are convenient; the middle part of the plug is provided with the flow limiting cavity, and the flow limiting ring is arranged at the lower end of the flow limiting cavity, so that the plug has the functions of flow limiting and filtering; then through will the end cap is installed on the installing port to with the restrictor ring is installed the inside of valve body, only need will the end cap is torn open, alright take out the restrictor ring makes things convenient for the dismouting of restrictor ring, thereby makes things convenient for to maintain the clearance to the restrictor ring.

In this embodiment, the connecting block upper end symmetry is provided with two spacing lugs one, installing port department symmetry is provided with two spacing lug two of a looks adaptation of spacing lug. In the design, the rotation angle of the plug is limited by the first limiting lug and the second limiting lug.

In this embodiment, the upper end of inlet opening is provided with first seal groove, first seal groove endotheca is equipped with first sealing washer, the lower extreme of inlet opening is provided with the second seal groove, second seal groove endotheca is equipped with the second sealing washer. In the design, the first sealing ring is used for preventing water leakage and improving the sealing property of the plug; the second sealing ring prevents water flow from flowing into the valve body from the outside of the flow limiting cavity, and the flow limiting effect is enhanced.

In this embodiment, a third sealing ring is further disposed at a joint of the plug and the mounting opening, and the third sealing ring is located at the upper end of the first sealing ring. In this design, the third sealing washer can further improve the leakproofness of end cap prevents the condition of leaking appears in the end cap.

In this embodiment, the lower extreme in restriction flow chamber still is provided with the filter screen, the filter screen is located the upper end of restrictor ring. In this design, the filter screen sets up the upper end of restrictor ring, rivers pass through behind the filter screen, the rethread restrictor ring prevents that impurity in the rivers from getting into the restrictor ring leads to the restrictor ring to damage, simultaneously, convenient clearance.

In this embodiment, the upper end of the connecting block is provided with a rotating handle. In this design, the rotation handle is provided to facilitate rotation of the plug.

Of course, the present embodiment can also be used for being mounted by mounting structures of other structures. Here, details are not described, and the restrictor ring according to the embodiment of the present application is described below.

Referring to fig. 1-6, an adjustable restrictor ring with good flow limiting effect includes a lower ring body 7, a flow limiting mechanism and an adjusting mechanism, wherein an upper ring body 3 is installed on the top of the lower ring body 7, and two fixing blocks 6 are fixedly connected to the bottom of the upper ring body 3, so that the upper ring body 3 and the lower ring body 7 can be conveniently connected; the flow limiting mechanism comprises a limiting plate 1, a rubber flow limiting ring 5 and a flow guide block 20, wherein the limiting plate 1 is sleeved at the top of a connecting pipe 19, the connecting pipe 19 is clamped at the top of a flow limiting column 10, the flow guide block 20 is fixedly connected to the flow limiting column 10, the rubber flow limiting ring 5 is sleeved outside the flow guide block 20, and a connecting strip 9 is arranged at the bottom of the rubber flow limiting ring 5 to facilitate flow limiting of fluid flowing into the flow limiting ring; the adjusting mechanism is installed in the lower ring body 7, the diameter of the lower ring body 7 is larger than that of the upper ring body 3, the lower ring body 7 is connected with the upper ring body 3 through the positioning bolt 15, and the positioning bolt 15 is convenient for reinforcing the connection of the upper ring body 3 and the lower ring body 7.

The limiting plate 1 is provided with a through hole 2, the limiting plate 1 is lapped on the upper ring body 3, the diameter of the limiting plate 1 is larger than that of the connecting pipe 19, the bottom of the connecting pipe 19 is clamped on the connecting block 11, the connecting block 11 is fixedly connected to the bottom of the inner cavity of the clamping groove 18, and the clamping groove 18 is formed in the top of the flow limiting column 10, so that the connecting block 11 is conveniently connected with the flow limiting column 10; a gasket 17 is lapped on the top of the rubber current-limiting ring 5, the gasket 17 is fixedly connected to the inner wall of the upper ring body 3, a limiting ring 4 is clamped on the side wall of the upper ring body 3, the limiting ring 4 is fixedly connected to the inner wall of the upper ring body 3, and an arc-shaped groove is formed in the inner side of the limiting ring 4, so that the limiting ring 4 can limit the installation of the rubber current-limiting ring 5; the number of the guide blocks 20 is four, guide grooves 21 are formed among the four guide blocks 20, the guide grooves 21 are positioned above the connecting strips 9, one ends of the connecting strips 9 are fixedly connected to the flow limiting columns 10, the other ends of the connecting strips 9 are fixedly connected to the inner wall of the built-in ring 8, and the number of the connecting strips 9 is four, so that the connecting strips 9 can be conveniently installed and used; an auxiliary plate 23 is fixedly connected among the four connecting strips 9, the thickness of the auxiliary plate 23 is smaller than that of the flow guide block 20, the auxiliary plate 23 is positioned on one side of the connecting strips 9 far away from the built-in ring 8, the built-in ring 8 is clamped in the upper ring body 3, and the thickness of the built-in ring 8 is larger than that of the upper ring body 3, so that the auxiliary plate 23 is convenient to mount and use; a reinforcing ring 16 is sleeved inside the upper ring body 3, the reinforcing ring 16 is positioned between the upper ring body 3 and the built-in ring 8, a buffer rod 14 is fixedly connected to the reinforcing ring 16, the buffer rod 14 is lapped at the bottom of the built-in ring 8, and the bottom of the reinforcing ring 16 is fixedly connected to the inner wall of the lower ring body 7, so that the buffer rod 14 can support the bottom of the built-in ring 18 conveniently; the adjusting mechanism comprises a lantern ring 12, a fixing rod 13 and an anti-slip ring 22, the lantern ring 12 is sleeved outside the flow limiting column 10, the anti-slip ring 22 is fixedly connected to the inner wall of the lantern ring 12, the thickness of the anti-slip ring 22 is smaller than that of the lantern ring 12, the anti-slip ring 22 is connected with the flow limiting column 10 through threads, and the lantern ring 12 is conveniently connected with the flow limiting column 10; fixing rods 13 are fixedly connected between the lantern ring 12 and the inner wall of the lower ring body 7, the fixing rods 13 are distributed at intervals of 90 degrees, and the length of each fixing rod 13 is greater than that of each connecting strip 9; the fixing block 6 is penetrated by a positioning bolt 15, the bottom of the positioning bolt 15 is connected with the lower ring body 7 through threads, and the height of the lower ring body 7 is smaller than that of the built-in ring 8, so that the fixing rod 13 is convenient to mount and use; the flow limiting column 10 is divided into an upper part and a lower part, wherein the longitudinal section of the upper part of the flow limiting column 10 is trapezoidal, the lower part of the flow limiting column 10 is provided with external threads, and the lower part of the flow limiting column 10 is positioned below the flow guide block 20, so that the height of the flow limiting column 10 can be conveniently adjusted.

When the flow limiting ring is used, firstly, fluid flows into a cavity defined by the built-in ring 8 and the auxiliary plate 23, the rubber flow limiting ring 5 is pressed by the fluid to tightly embrace the flow limiting column 10 and tightly press the inner wall of the upper ring body 3, so that the fluid can only flow out of the upper ring body 3 through the flow guide groove 21, the pressure of the fluid is higher, the flow speed is higher, the pressing force applied to the upper ring body 3 is higher, and the flow limiting effect is higher, so that the flowing-out flow of the fluid can be kept constant under different pressures, when the flow limiting ring is installed and used, the flow limiting column 10 is rotatably adjusted inside the lantern ring 12, the installation height of the top of the flow limiting column 10 can be changed, the limiting plate 1 is clamped at the top of the flow limiting column 10 to limit and reinforce the top of the flow limiting column 10, the connecting pipe 19 is made of a rubber material and a telescopic structure, the side wall of the connecting pipe is of a saw-toothed shape, when the flow limiting column 10 moves upwards, the flow limiting column 19 is compressed, the fluid can be discharged from the through hole 2 in the connecting pipe 1, the limiting plate can be rotated between the limiting plate 1 and the connecting pipe 19, the limiting plate, the position of the through hole 2 can be conveniently adjusted, the fluid can be buffered or stopped, the fluid can be conveniently marked on the limiting plate 1, and the whole flow limiting ring can be marked.

The application has the advantages that:

1. the installation method is simple to operate, the contact area between the limiting ring 4 and the rubber current-limiting ring 5 can be increased through the gasket 17, the installation of the rubber current-limiting ring 5 is reinforced, the rubber current-limiting ring 5 is prevented from loosening in the upper ring body 3, and the current-limiting effect on the inner part of the current-limiting ring is guaranteed;

2. the structure is reasonable, the upper ring body 3 and the lower ring body 7 can be detached from each other, the inner part of the upper ring body 3 can be conveniently detached and maintained, the use of a flow-limiting ring is ensured, the reinforcing ring 16 can support the built-in ring 8, and the built-in ring 8 can be conveniently installed and used in the upper ring body 3;

3. the installation of current-limiting post 10 in last ring body 3 inside is convenient for adjust, and limiting plate 1 and connecting pipe 19 can be to the spacing reinforcement in current-limiting post 10 top, and the discharge of the steerable fluid of limiting plate 1 further promotes the holistic current-limiting effect of restrictor ring.

The present application relates to circuits and electronic components and modules, all of which are well within the skill of those in the art and, needless to say, does not relate to software or process improvements.

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

Claims

1. The utility model provides a restriction ring with adjustable current-limiting is effectual which characterized in that: the ring body structure comprises a lower ring body (7), a current limiting mechanism and an adjusting mechanism, wherein an upper ring body (3) is installed at the top of the lower ring body (7), two fixing blocks (6) are fixedly connected to the bottom of the upper ring body (3), the fixing blocks (6) are penetrated through by positioning bolts (15), the bottom of the positioning bolts (15) is connected with the lower ring body (7) through threads, and the height of the lower ring body (7) is smaller than that of a built-in ring (8); the flow limiting mechanism comprises a limiting plate (1), a rubber flow limiting ring (5) and a flow guide block (20), the limiting plate (1) is sleeved on the top of a connecting pipe (19), the connecting pipe (19) is clamped on the top of a flow limiting column (10), the flow guide block (20) is fixedly connected onto the flow limiting column (10), the rubber flow limiting ring (5) is sleeved on the outer portion of the flow guide block (20), and a connecting strip (9) is arranged at the bottom of the rubber flow limiting ring (5); the utility model discloses a flow limiting device, including ring body (7), adjustment mechanism, lower ring body (7), locating bolt (15), adjusting mechanism, lantern ring (12), dead lever (13) and non-slip ring (22), ring body (7) and last ring body (3) are connected through locating bolt (15) down, adjustment mechanism includes lantern ring (12), dead lever (13) and non-slip ring (22), lantern ring (12) cup joint in flow limiting post (10) outside down, the rigid coupling has non-slip ring (22) on lantern ring (12) inner wall, the thickness of non-slip ring (22) is less than lantern ring (12), pass through threaded connection between non-slip ring (22) and flow limiting post (10), the rigid coupling has dead lever (13) between lantern ring (12) and lower ring body (7) inner wall, be 90 interval distribution between dead lever (13), the length of dead lever (13) is greater than connecting strip (9).

2. The adjustable restrictor ring with good flow limiting effect of claim 1, wherein: through-hole (2) have been seted up on limiting plate (1), limiting plate (1) overlap joint is on last ring body (3), the diameter of limiting plate (1) is greater than connecting pipe (19), connecting pipe (19) bottom block is on connecting block (11), connecting block (11) rigid coupling is in draw-in groove (18) inner chamber bottom, draw-in groove (18) are seted up at current-limiting column (10) top.

3. The adjustable restrictor ring with good flow limiting effect of claim 1, wherein: the rubber current-limiting ring is characterized in that a gasket (17) is lapped at the top of the rubber current-limiting ring (5), the gasket (17) is fixedly connected to the inner wall of the upper ring body (3), a limiting ring (4) is clamped on the side wall of the upper ring body (3), the limiting ring (4) is fixedly connected to the inner wall of the upper ring body (3), and an arc-shaped groove is formed in the inner side of the limiting ring (4).

4. The adjustable restrictor ring with good flow limiting effect of claim 1, wherein: the utility model discloses a flow guide block (20) is including water conservancy diversion piece (20), water conservancy diversion piece (20) are totally four water conservancy diversion piece (21) have been seted up between water conservancy diversion piece (20), water conservancy diversion piece (21) are located connecting strip (9) top, connecting strip (9) one end rigid coupling is in current-limiting column (10), just connecting strip (9) other end rigid coupling is on built-in ring (8) inner wall, connecting strip (9) totally four.

5. The adjustable restrictor ring with good flow limiting effect of claim 4, wherein: an auxiliary plate (23) is fixedly connected among the four connecting strips (9), the thickness of the auxiliary plate (23) is smaller than that of the flow guide block (20), the auxiliary plate (23) is located on one side, away from the built-in ring (8), of the connecting strips (9), the built-in ring (8) is clamped inside the upper ring body (3), and the thickness of the built-in ring (8) is larger than that of the upper ring body (3).

6. The adjustable restrictor ring with good flow limiting effect of claim 1, wherein: go up ring body (3) inside and cup jointed reinforcing ring (16), reinforcing ring (16) are located and are gone up between ring body (3) and built-in ring (8), the rigid coupling has buffer beam (14) on reinforcing ring (16), buffer beam (14) overlap joint is in built-in ring (8) bottom, just reinforcing ring (16) bottom rigid coupling is on ring body (7) inner wall down.

7. The adjustable restrictor ring with good flow limiting effect of claim 1, wherein: the flow limiting column (10) is divided into an upper part and a lower part, wherein the longitudinal section of the upper part of the flow limiting column (10) is trapezoidal, an external thread is arranged on the lower part of the flow limiting column (10), and the lower part of the flow limiting column (10) is positioned below the flow guide block (20).