CN113898741B

CN113898741B - Flow regulating valve and smoke generator

Info

Publication number: CN113898741B
Application number: CN202111228082.1A
Authority: CN
Inventors: 李绍利; 陈兴; 戴春爽; 高忠国; 焦龙伟; 孟庆茂; 任鹏飞; 宋化星
Original assignee: Shandong Xinyue Machinery Co ltd
Current assignee: Shandong Xinyue Machinery Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-09-05
Anticipated expiration: 2041-10-21
Also published as: CN113898741A

Abstract

The invention provides a flow regulating valve and a smoke generator, which comprises: and a regulating valve housing, an inflow pipe and an outflow pipe, further comprising: the valve core is rotatably arranged in the first accommodating cavity, the lower end of the valve core enters the outflow pipeline, a first external thread is arranged on the outer wall of the valve core, and a first fixed end and a second fixed end which are oppositely arranged are arranged on the valve core; the first boss is arranged in the first accommodating cavity and is provided with a first internal thread matched with the first external thread; the first elastic piece is arranged between the first boss and the first fixed end; the second elastic piece is arranged between the second fixed end and the first external thread. The invention provides a flow regulating valve and a smoke generator, which realize accurate setting of reversing positions of reciprocating motion of a valve core of the flow regulating valve and overcome the defect that accurate initialization setting of the flow regulating valve is difficult to realize in the prior art.

Description

Flow regulating valve and smoke generator

Technical Field

The invention relates to the technical field of valves, in particular to a flow regulating valve and a smoke generator.

Background

The flow regulating valve is a common hydraulic or pneumatic component, is widely applied to the field of fluid machinery, is used for controlling the flow of gas or liquid, such as in an engine fuel system, and can be used for regulating the fuel supply quantity of the engine fuel.

In the flow regulating valve in the prior art, generally, through threaded connection cooperation between the valve core 2 and the regulating valve shell 1, the reciprocating motion in the valve shell 1 of the valve core 2 is realized, the gas or liquid flow control is further realized, when the range of the flow regulating valve to be regulated has limited requirements, the valve core 2 can only reciprocate in a specific range, so that the valve core 2 needs to start moving from a certain fixed initial position and stop moving at a fixed position every time in the working process of the flow regulating valve. When one movement is completed, the valve core 2 is controlled to reversely rotate to carry out return movement, so that the valve core 2 can reciprocate within a specific range.

In the above-mentioned scheme, generally, the external thread is disposed on the outer surface of the valve core 2, and the internal thread is disposed on the inner surface of the adjusting valve housing 1, and the following defects easily occur in the working process of the above-mentioned scheme:

it is difficult to perform an initial setting of the regulating valve, and when there is a limit requirement for the regulating range, the regulating valve needs to be adjusted from a certain fixed initial position every time the regulating valve starts to be adjusted, and the regulating valve needs to be performed within the set range. When the valve core 2 is rotated by adopting a manual adjustment mode, the number of rotation turns is not easy to accurately control, namely the valve core 2 cannot be accurately controlled, and the valve core 2 can not move in place or continuously idle relative to the adjusting valve housing 1; when the valve core 2 is rotated by adopting a driving motor to adjust, namely automatically adjusting, after the valve core 2 is used for a plurality of times for a long time, the driving motor has the phenomena of step loss, clamping and the like, and the valve core 2 cannot be accurately controlled, so that the valve core 2 cannot move in place or continuously idles relative to the adjusting valve shell 1.

Therefore, no matter in a manual or automatic mode, the valve core 2 cannot move in place or idles continuously relative to the regulating valve housing 1, the situation that the valve core 2 cannot be accurately initialized easily occurs, so that the reversing position of the valve core 2 of the flow regulating valve cannot be accurately set, that is, the accurate initialization setting of the flow regulating valve is difficult to realize.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the accurate initialization setting of the flow regulating valve is difficult to realize in the prior art.

To this end, the present invention provides a flow regulating valve comprising:

a first accommodating cavity is formed in the adjusting valve housing;

an inflow pipe and an outflow pipe disposed in the adjustment valve housing, the first accommodation chamber communicating with the inflow pipe and the outflow pipe;

further comprises:

the valve core is rotatably arranged in the first accommodating cavity, the lower end of the valve core enters any one of the inflow pipeline and the outflow pipeline, a first external thread is arranged on the outer wall of the valve core, and a first fixed end and a second fixed end which are oppositely arranged are arranged on the valve core;

the first internal thread is arranged in the first accommodating cavity and is matched with the first external thread;

The first elastic piece is arranged between the first external thread and/or the first fixed end;

and/or a second elastic member disposed between the second fixed end and the first external thread;

the valve core is suitable for rotating under the action of external force, so that the first external thread has a first state of moving linearly in a first direction and separating from the first internal thread; and a second state in which the first female screw is moved in a reverse direction and disengaged from the first female screw.

Optionally, an adjusting cylinder is arranged in the first accommodating cavity, the adjusting cylinder is sleeved on the outer side of the valve core, a first boss is arranged on the adjusting cylinder, a first internal thread is arranged on the first boss, and the first elastic piece is arranged between the adjusting cylinder and the first fixed end.

Optionally, the method further comprises:

the baffle ring is sleeved on the inner wall of the adjusting cylinder, the baffle ring is arranged between the adjusting cylinder and the valve core, a second boss is arranged on the baffle ring, and one end of the second elastic piece is propped against the second boss.

Optionally, the valve core further includes: the limiting sleeve is used for forming the second fixed end, and the second elastic piece is clamped between the limiting sleeve and the baffle ring.

Optionally, the method further comprises: and the rotation limiting structure is arranged on the adjusting cylinder and used for limiting the rotation freedom degree of the adjusting cylinder.

Optionally, the rotation limiting structure includes:

the limiting plane is arranged on the outer wall of the adjusting cylinder;

and the limiting pin acts on the limiting plane and is spatially parallel to the limiting plane.

Optionally, the method further comprises:

the second external thread is arranged on the outer wall of the adjusting cylinder;

the adjusting sleeve is arranged at a fixed height of the adjusting valve shell, sleeved on the outer wall of the adjusting cylinder, and provided with a second internal thread matched with the second external thread;

the adjusting sleeve is suitable for rotating under the action of external force, so that the adjusting cylinder drives the valve core to move.

Optionally, at least a part of the positions of the adjusting valve housing corresponding to the adjusting sleeve are arranged in an open mode.

Optionally, the adjusting valve housing comprises a valve cover, a driving seat and a valve seat which are arranged along the height direction, and the adjusting sleeve is arranged at the junction between the driving seat and the valve seat.

Optionally, the case upper end is provided with the limit table, the limit table with the one end butt that the limit sleeve deviates from the second elastic component.

Optionally, the method further comprises:

the second accommodating cavity is arranged in the adjusting valve shell and is arranged side by side with the first accommodating cavity;

a drive assembly, comprising: and the driving motor is arranged in the second accommodating cavity and is suitable for providing power for the rotation of the valve core through transmission.

Optionally, the driving assembly further comprises:

the driving gear is arranged on the driving motor;

the transmission gear is meshed with the driving gear;

one end of the transmission shaft is connected with the transmission gear, and the other end of the transmission shaft is nested at the upper end part of the valve core and is suitable for driving the valve core to rotate.

Optionally, the transmission shaft is provided with a first connecting part, the valve core is provided with a second connecting part connected with the first connecting part, and one of the first connecting part and the second connecting part is provided with a groove; and a convex part is arranged on the other of the first connecting part and the second connecting part, and acts in the groove and can move relative to the groove.

Optionally, the first fixed end is an annular protruding portion arranged on the valve core, and a sealing element is sleeved on one side, away from the annular protruding portion, of the valve core.

The invention also provides a smoke generator comprising: the flow rate regulating valve according to any one of the above aspects.

The technical scheme of the invention has the following advantages:

1. the present invention provides a flow regulating valve, comprising: a first accommodating cavity is formed in the adjusting valve housing; an inflow pipe and an outflow pipe disposed in the adjustment valve housing, the first accommodation chamber communicating with the inflow pipe and the outflow pipe; further comprises: the valve core is rotatably arranged in the first accommodating cavity, the lower end of the valve core enters any one of the inflow pipeline and the outflow pipeline, a first external thread is arranged on the outer wall of the valve core, and a first fixed end and a second fixed end which are oppositely arranged are arranged on the valve core; the first internal thread is arranged in the first accommodating cavity and is matched with the first external thread; the first elastic piece is arranged between the first external thread and the first fixed end; the second elastic piece is arranged between the second fixed end and the first external thread; the valve core is suitable for rotating under the action of external force, so that the first external thread has a first state of moving linearly in a first direction and separating from the first internal thread; and a second state in which the first female screw is moved in a reverse direction and disengaged from the first female screw.

In the flow regulating valve provided by the invention, the inflow pipeline and the outflow pipeline are arranged in the regulating valve shell, and are the flow pipelines of the medium such as gas or liquid, and the cross section area of part of the flow pipelines is changed by utilizing the position adjustment of the valve core, so that the flow of the gas or liquid is controlled. And by utilizing the first elastic piece and the second elastic piece, the quick return of the valve core and the accurate initialization setting of the flow regulating valve are realized.

The valve core is moved by a first set of screw thread pair consisting of a first external screw thread arranged on the outer wall of the valve core and a first internal screw thread arranged on the first boss, and meanwhile, a first elastic piece and a second elastic piece are arranged at proper positions in the adjusting valve shell and act on the valve core. Because the distance between the first set of thread pairs is limited, the valve core rotates under the action of external force, so that the first external thread has a first state of moving linearly in a first direction and separating from the first internal thread; and the valve core rotates in a reverse direction to a second direction and is separated from a second state of the first internal thread, when the first set of thread pair is separated, namely the valve core moves to a limit position of one way, the valve core idles relative to the valve housing, in the one way movement process, the first elastic piece and the second elastic piece accumulate corresponding elastic potential energy respectively, when the valve core rotates reversely, the elastic potential energy of the first elastic piece and the second elastic piece act respectively, so that the valve core returns quickly, namely the first set of thread pair is meshed again quickly, the next one way movement is completed, the position of the first set of thread pair separated is the initial position of the one way movement of the valve core, and the length of the first set of thread pair is the adjusting range of the valve core.

Through the scheme, the reversing position of the valve core of the flow regulating valve in reciprocating motion is accurately set, and the defect that the accurate initialization setting of the flow regulating valve is difficult to realize in the prior art is overcome.

2. The invention provides a flow regulating valve, wherein a regulating cylinder is arranged in a first accommodating cavity, the regulating cylinder is sleeved on the outer side of a valve core, a first boss is arranged on the regulating cylinder, the first boss is provided with a first internal thread, and a first elastic piece is arranged between the regulating cylinder and a first fixed end.

The adjusting cylinder is provided with the first boss, so that an installation position is provided for the first elastic piece, and a matching position is also provided for the first set of thread pair.

3. The invention provides a flow regulating valve, further comprising: the baffle ring is sleeved on the inner wall of the adjusting cylinder, the baffle ring is arranged between the adjusting cylinder and the valve core, a second boss is arranged on the baffle ring, and one end of the second elastic piece is propped against the second boss.

The baffle ring is sleeved on the inner wall of the adjusting cylinder, and meanwhile, the baffle ring is arranged between the adjusting cylinder and the valve core, and a second boss is arranged on the baffle ring, so that an installation position is provided for the second elastic piece.

4. The invention provides a flow regulating valve, the valve core further comprises: the limiting sleeve is used for forming the second fixed end, and the second elastic piece is clamped between the limiting sleeve and the baffle ring.

The limit sleeve forms a second fixed end, the second elastic piece is clamped between the limit sleeve and the baffle ring, the limit sleeve provides an installation position for the second elastic piece, the length of the second elastic piece is reduced, and the service life of the second elastic piece is prolonged.

5. The invention provides a flow regulating valve, further comprising: and the rotation limiting structure is arranged on the adjusting cylinder and used for limiting the rotation freedom degree of the adjusting cylinder.

The flow regulating valve is provided with a rotation limiting structure to limit the regulating cylinder to rotate, so that the first set of screw thread pair can work normally.

6. The invention provides a flow regulating valve, the rotation limiting structure includes: the limiting plane is arranged on the outer wall of the adjusting cylinder; and the limiting pin acts on the limiting plane and is spatially parallel to the limiting plane.

Through set up spacing plane on the outer wall of adjusting the section of thick bamboo to set up the spacer pin, act on spacing plane, rotate in order to restrict adjusting the section of thick bamboo, so that first set of screw thread pair can normally work.

7. The invention provides a flow regulating valve, further comprising: the second external thread is arranged on the outer wall of the adjusting cylinder; the adjusting sleeve is arranged at a fixed height of the adjusting valve shell, sleeved on the outer wall of the adjusting cylinder, and provided with a second internal thread matched with the second external thread; the adjusting sleeve is suitable for rotating under the action of external force, so that the adjusting cylinder drives the valve core to move.

The second set of screw thread pair that constitutes through the second external screw thread that sets up on the outer wall of adjusting the section of thick bamboo and the second internal screw thread that sets up on the adjusting collar, and the adjusting collar sets up on adjusting the fixed height of valve housing, because the adjusting collar can't take place to rotate, when the second set of screw thread pair takes place to act on under the effect of external force, when adjusting collar rotates on adjusting the fixed height of valve housing promptly, the adjusting collar will only can take place the ascending motion of direction of height at first holding chamber, simultaneously because be connected through the screw thread between adjusting collar and the case, consequently, the adjusting collar can drive the case and realize linear motion, realize adjusting the initial position of case accommodation range, also can realize directly adjusting the flow simultaneously.

8. The invention provides a flow regulating valve, wherein at least a part of the position of a regulating valve shell corresponding to a regulating sleeve is arranged in an open mode.

At least a part of the position of the adjusting valve shell corresponding to the adjusting sleeve is arranged in an open mode, namely, a part of the adjusting sleeve is exposed out of the adjusting valve shell so as to facilitate the rotating operation of the adjusting sleeve by means of external force.

9. The invention provides a flow regulating valve, which comprises a valve cover, a driving seat and a valve seat, wherein the valve cover, the driving seat and the valve seat are arranged along the height direction, and the regulating sleeve is arranged at the junction between the driving seat and the valve seat.

The adjusting sleeve is arranged at the junction between the driving seat and the valve seat to fix the position of the adjusting sleeve and limit the movement of the adjusting sleeve in the height direction.

10. The invention provides a flow regulating valve, wherein a limiting table is arranged at the upper end part of a valve core, and the limiting table is abutted with one end of a limiting sleeve, which is away from a second elastic piece.

The upper end of the valve core is provided with a limiting table, the limiting table protrudes out of the valve core main body, the limiting table is in butt joint with one end of the limiting sleeve, deviating from the second elastic piece, and is used for limiting the position of the limiting sleeve and providing stable support for the second elastic piece.

11. The invention provides a flow regulating valve, further comprising: the second accommodating cavity is arranged in the adjusting valve shell and is arranged side by side with the first accommodating cavity; a drive assembly, comprising: and the driving motor is arranged in the second accommodating cavity and is suitable for providing power for the rotation of the valve core through transmission.

The second hold the chamber with first hold the chamber and set up side by side and realized that governing valve occupation space reduces, utilize driving motor to drive the case and rotate as external force to realize the cooperation action of first set of screw thread pair, convenient and fast's realization flow control valve's steady operation.

12. The present invention provides a flow regulating valve, the driving assembly further comprising: the driving gear is arranged on the driving motor; the transmission gear is meshed with the driving gear; one end of the transmission shaft is connected with the transmission gear, and the other end of the transmission shaft is nested at the upper end part of the valve core and is suitable for driving the valve core to rotate.

The power is transmitted to the valve core through the driving motor, the driving gear, the transmission gear and the transmission shaft, so that the valve core is driven to rotate by using the driving motor as external force, the matching action of the first set of thread pair is realized, and the stable operation of the flow regulating valve is realized conveniently and rapidly.

13. The invention provides a flow regulating valve, wherein a first connecting part is arranged on a transmission shaft, a second connecting part connected with the first connecting part is arranged on a valve core, and a groove is formed in one of the first connecting part and the second connecting part; and a convex part is arranged on the other of the first connecting part and the second connecting part, and acts in the groove and can move relative to the groove.

Through the connected mode of having the groove type mating surface, when the transmission shaft takes place to rotate under the exogenic action, the convex part acts on with the groove phase to on transmitting pivoted power to the case, realize that the transmission shaft drives the case and rotate. Meanwhile, the groove position has a certain length, and when the valve core moves linearly relative to the transmission shaft, the convex part can move in the groove position, and the reciprocating motion of the valve core in the height direction can also be completed.

14. The invention provides a flow regulating valve, wherein a first fixed end is an annular protruding part arranged on a valve core, and a sealing element is sleeved on one side, far away from the annular protruding part, of the valve core.

And a sealing piece is sleeved on one side of the valve core, which is far away from the annular protruding part, so that the medium such as gas or liquid is prevented from being discharged outside the flow pipeline when passing through the flow pipeline.

15. The flow regulating valve provided by the invention can realize the driving of the valve core in an automatic mode, so that the flow regulating action is realized; and when the driving motor fails, the valve core can be driven manually, so that the use convenience of the whole flow regulating valve is effectively improved.

Drawings

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

FIG. 1 is a schematic diagram of a flow control valve according to the present invention;

FIG. 2 is a schematic view of a valve cartridge according to the present invention assembled into a valve seat;

FIG. 3 is a schematic view of the structure of the components near the valve core provided by the invention;

FIG. 4 is a schematic view of a valve seat according to the present invention;

FIG. 5 is a schematic view of the drive assembly provided by the present invention assembled into a valve cover and a drive seat;

FIG. 6 is a schematic view of the valve cover and the driving seat according to the present invention;

FIG. 7 is a schematic diagram of a structure of the flow control valve drive shaft and the valve core provided by the invention;

FIG. 8 is a schematic cross-sectional view of the flow control valve A-A of FIG. 7;

fig. 9 is a schematic structural view of a smoke generator provided by the invention.

Reference numerals illustrate:

1. an adjusting valve housing; 11. inflow piping; 12. an outflow conduit; 13. a first accommodation chamber; 14. a second accommodation chamber; 15. a valve cover; 16. a driving seat; 17. a valve seat;

2. a valve core; 21. a first external thread; 22. a limiting table; 23. a first fixed end; 24. a second fixed end; 25. a second connecting portion; 251. a slot;

3. a first elastic member;

4. a second elastic member; 41. a limit sleeve;

5. an adjustment cylinder; 51. a first boss; 52. a first internal thread; 53. a limit plane; 54. a limiting pin; 55. a second external thread;

6. A baffle ring; 61. a second boss;

7. an adjusting sleeve; 71. a second internal thread;

8. a drive assembly; 81. a driving motor; 82. a drive gear; 83. a transmission gear; 84. a transmission shaft; 85. a first connection portion; 851. a convex portion;

9. a seal;

10. a flow regulating valve;

101. a smoke generator.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 according to the specific circumstances.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a flow rate regulating valve for realizing a regulating function on a fluid, wherein the fluid may be water, oil, gas or the like. As shown in fig. 1 to 8, includes:

the adjusting valve housing 1 is internally provided with a first accommodating cavity 13 for arranging subsequent components such as a transmission gear 83, a transmission shaft 84, a valve core 2, an adjusting sleeve 7, an adjusting cylinder 5, a first elastic member 3, a second elastic member 4 and the like.

As shown in fig. 4, the inflow duct 11 and the outflow duct 12 are provided in the regulator valve housing 1, and are flow ducts for a medium such as a gas or a liquid, and are: the inflow duct 11 and the outflow duct 12 are named correspondingly for the flow paths of the medium, and do not refer specifically to a certain duct, and the inflow duct may be disposed on the left side or the right side of the outflow duct in the view shown in fig. 4. The first accommodation chamber 13 communicates directly with one of the inflow pipe 11 and the outflow pipe 12, and communicates with the other of the inflow pipe 11 and the outflow pipe 12 through a section of the conduction pipe.

The flow regulating valve further includes:

the valve core 2 is rotatably arranged in the first accommodating cavity 13, as shown in fig. 1, the lower end of the valve core 2 enters any one of the inflow pipeline 11 and the outflow pipeline 12, meanwhile, the first fixed end 23 at the lower end of the valve core 2 is tightly attached to the first accommodating cavity 13, so that a certain space is formed from the lower part of the first accommodating cavity 13, namely the first fixed end 23, to the bottom of the first accommodating cavity 13 for medium circulation, when the valve core 2 moves in the height direction, the volume of the space formed by the lower part of the first accommodating cavity 13 changes, meanwhile, the area of a blocking opening at the lower part of the valve core 2 also changes, and the flow of the medium entering the outflow pipeline 12 from the space formed by the lower part of the first accommodating cavity 13 changes, so that the purpose of flow regulation is achieved.

Specifically, as shown in fig. 1 and 2, the flow path of the medium is: an inflow pipe 11, a space formed at a lower portion of the first accommodation chamber 13, and an outflow pipe 12.

Further, the valve element 2 may be rotated by an external force, and the external force may be generated by power transmission of the driving motor 81, or by providing a rotating member on the valve element 2, or by manually rotating the valve element 2.

A first external thread 21 provided on the outer wall of the valve body 2, the first external thread 21 having a certain length, for example, 4-8mm, on the valve body 2;

The first fixed end 23 and the second fixed end are oppositely arranged on the valve core 2 and are respectively positioned at two sides of the first external thread 21, the first fixed end 23 and the second fixed end 24 are arranged to provide mounting positions for the first elastic piece 3 and the second elastic piece 4, and the following needs to be described: the positions of the first fixed end 23 and the second fixed end 24 on the spool are not limited as long as the limiting action of the ends of the first elastic member 3 and the second elastic member 4 can be achieved. The first internal thread 52 is arranged in the first accommodating cavity 13, the first internal thread 52 is matched with the first external thread 21, and the movement of the valve core 2 is realized through a first set of thread pairs formed by the first external thread 21 arranged on the outer wall of the valve core 2 and the first internal thread 52 arranged on the inner wall of the first accommodating cavity 13.

The first elastic member 3 is disposed between the first external thread 21 and the first fixed end 23.

The second elastic member 4 is disposed between the second fixed end and the first external thread 21.

Specifically, as shown in fig. 1, the valve element 2 is adapted to rotate under the action of an external force, so that the first external thread 21 has a first state of moving linearly in a first direction and being disengaged from the first internal thread 52; and a second state in which the movement is reversed in the second direction and out of the first internal thread 52. Since the spool 2 can perform the forward and reverse rotation, the first state may be defined as: when the valve core 2 moves linearly upwards along the first direction, the first external thread 21 is separated from the limit state when the first internal thread 52 is upwards; accordingly, the second state is defined as: when the spool 2 moves in the second direction, i.e. downwards, in the reverse direction, the first external thread 21 is disengaged downwards from the limit state of the first internal thread 52.

Further, when the first set of screw thread pairs formed on the inner walls of the spool 2 and the first accommodation chamber 13 are completely engaged, the elastic forces of the first elastic member 3 and the second elastic member 4 are in an equal state. When the valve core 2 moves upwards, the distance between the two mounting surfaces of the first elastic piece 3 is shortened, the distance between the two mounting surfaces of the second elastic piece 4 is lengthened, a downward resultant force is formed on the first set of thread pairs due to the action of elastic potential energy, when the valve core 2 moves upwards to a limit position to separate the first set of thread pairs, namely moves to a first state, the valve core 2 is reversed, and the first set of thread pairs can be meshed quickly due to the existence of the downward resultant force, so that the valve core 2 moves downwards; correspondingly, when the valve core 2 moves downwards, the distance between the two mounting surfaces of the second elastic piece 4 is shortened, the distance between the two mounting surfaces of the first elastic piece 3 is prolonged, an upward resultant force is formed on the first set of thread pairs due to the action of elastic potential energy, when the valve core 2 moves downwards to a limit position to separate the first set of thread pairs, namely moves to a second state, the valve core 2 is reversed, and the first set of thread pairs can be meshed quickly due to the existence of the upward resultant force, so that the valve core 2 moves upwards. Therefore, the regulating effect of the flow regulating valve on the medium flow is realized, and the quick return of the valve core 2 is realized, so that the precise setting of the reversing position of the reciprocating motion of the valve core 2 of the flow regulating valve is realized. The first elastic member 3 and the second elastic member 4 may be elastic members such as springs and disc springs.

In other embodiments, only the first elastic member 3 may be provided, or only the second elastic member 4 may be provided, and the adjustment valve may be initially set from only one end.

In the flow control valve provided in this embodiment, the inflow pipe 11 and the outflow pipe 12 are provided inside the control valve housing 1, and are flow pipes for a medium such as gas or liquid, and the flow of the gas or liquid is controlled by changing the cross-sectional area of a part of the flow pipes by adjusting the position of the valve element 2. And by utilizing the first elastic piece 3 and the second elastic piece 4, the quick return of the valve core 2 and the accurate initialization setting of the flow regulating valve are realized.

Specifically, the movement of the valve element 2 is achieved by a first set of thread pairs consisting of first external threads 21 provided on the outer wall of the valve element 2 and first internal threads 52 provided on the inner wall of the first accommodation chamber 13, while at the same time, the first elastic member 3 and the second elastic member 4 are provided at appropriate positions within the regulator valve housing 1 and act on the valve element 2. Because the distance between the first set of thread pairs is limited, the valve core 2 rotates under the action of external force, so that the first external thread 21 has a first state of moving linearly in a first direction and separating from the first internal thread 52; and the valve core 2 rotates idle relative to the valve housing 1 after the first set of thread pairs are disengaged, namely, the valve core 2 moves to the limit position of one way, in the one way movement process, the first elastic piece 3 and the second elastic piece 4 respectively accumulate corresponding elastic potential energy, and when the valve core 2 rotates reversely, the elastic potential energy of the first elastic piece 3 and the second elastic piece 4 respectively act, so that the valve core 2 returns quickly, namely, the first set of thread pairs are quickly reengaged to finish the next one way movement, the position of the first set of thread pairs where the valve core 2 is disengaged is the initial position of the one way movement of the valve core 2, and the length of the first set of thread pairs is the adjusting range of the valve core 2.

Through the scheme, the accurate setting of the reversing position of the reciprocating motion of the valve core 2 of the flow regulating valve is realized, and the defect that the accurate initialization setting of the flow regulating valve is difficult to realize in the prior art is overcome.

On the basis of the above-described embodiments, as a further defined embodiment, the first internal thread 52 may be provided directly on the inner wall of the first receiving chamber 13. As a variant, the setting up of the first internal thread 52 can also be achieved by providing additional structure, as shown in particular in fig. 2, the flow regulating valve further comprising:

the adjusting cylinder 5 is arranged in the first accommodating cavity 13, the adjusting cylinder 5 is sleeved outside the valve core 2, a first boss 51 is arranged on the adjusting cylinder 5, a first internal thread 52 is arranged on the first boss 51, the first elastic piece 3 is arranged between the adjusting cylinder 5 and the first fixed end 23, the first boss 51 is arranged on the adjusting cylinder 5, an installation position is provided for the first elastic piece 3, and a matching position is also provided for the first set of thread pair.

As a further limiting embodiment, as shown in fig. 2, the flow rate regulating valve further includes:

the baffle ring 6 is sleeved on the inner wall of the adjusting cylinder 5, and the baffle ring 6 is arranged between the adjusting cylinder 5 and the valve core 2.

And a second boss 61 provided on the stopper ring 6, one end of the second elastic member 4 being abutted against the second boss 61.

Specifically, the baffle ring 6 is sleeved on the inner wall of the adjusting cylinder 5, meanwhile, the baffle ring 6 is arranged between the adjusting cylinder 5 and the valve core 2, and a second boss 61 is arranged on the baffle ring 6 to provide an installation position for the second elastic piece 4.

Further, as shown in fig. 2, in order to avoid interference between the baffle ring 6 and the first external thread 21, a hollowed-out area is provided on the inner wall of the baffle ring 6, and the first external thread 21 may move in the hollowed-out area.

In addition to the above embodiments, as a further defined embodiment, as shown in fig. 2, the valve element 2 further includes:

the limiting sleeve 41, the limiting sleeve 41 forms the second fixed end 24, and the second elastic piece 4 is clamped between the limiting sleeve 41 and the baffle ring 6, and the limiting sleeve 41 provides an installation position for the second elastic piece 4, reduces the length of the second elastic piece 4, and is favorable for prolonging the service life of the second elastic piece 4.

On the basis of the above embodiment, as a further limiting embodiment, as shown in fig. 2, the upper end of the valve core 2 is provided with a limiting table 22, the limiting table 22 protrudes from the main body of the valve core 2, and the limiting table 22 abuts against one end of the limiting sleeve 41, which is away from the second elastic member 4, so as to limit the position of the limiting sleeve 41, and provide stable support for the second elastic member 4.

In addition to the above embodiments, as further defined embodiments, as shown in fig. 1 and 2, the flow rate regulating valve further includes:

the rotation limiting structure is arranged on the adjusting cylinder 5 and used for limiting the rotation freedom degree of the adjusting cylinder 5, and the flow adjusting valve is provided with the rotation limiting structure to limit the adjusting cylinder 5 to rotate, so that the first set of screw thread pair can work normally.

As a further limiting embodiment, as shown in fig. 1 and 2, the rotation limiting structure includes:

the limiting plane 53 is arranged on the outer wall of the adjusting cylinder 5.

The limiting pin 54 acts on the limiting plane 53, and the limiting pin 54 is spatially parallel to the limiting plane 53, and the limiting pin 54 acts on the limiting plane 53 by arranging the limiting plane 53 on the outer wall of the adjusting cylinder 5 and arranging the limiting pin 54, so as to limit the adjusting cylinder 5 to rotate, and the first set of screw thread pair can work normally.

Specifically, the limiting pin 54 is inserted into the adjusting valve housing, and meanwhile, the limiting pin 54 is abutted against the limiting plane 53, and when the limiting plane 53 rotates, the limiting pin 54 stops the limiting plane 53 from rotating continuously. Other equivalent manners may be adopted, for example, a vertical groove is formed in the adjusting cylinder 5, the limiting pin 54 is inserted into the adjusting valve housing 1, and one end of the limiting pin 54 extends into the vertical groove.

a second external thread 55 provided on the outer wall of the adjustment cylinder 5;

an adjusting sleeve 7 which is arranged at a fixed height of the adjusting valve housing 1 and is sleeved on the outer wall of the adjusting cylinder 5,

the second internal thread 71 is disposed on the adjusting sleeve 7, and is matched with the second external thread 55, and the adjusting sleeve 7 is suitable for rotating under the action of external force, so that the adjusting cylinder 5 drives the valve core 2 to move.

Specifically, as shown in fig. 1, through the second set of thread pairs formed by the second external thread 55 arranged on the outer wall of the adjusting cylinder 5 and the second internal thread 71 arranged on the adjusting sleeve 7, and the adjusting sleeve 7 is arranged on the fixed height of the adjusting valve housing 1, when the second set of thread pairs act under the action of external force, namely, the adjusting sleeve 7 rotates on the fixed height of the adjusting valve housing 1, the adjusting cylinder 5 can only move in the height direction in the first accommodating cavity 13 and drive the valve core 2 to move, so that the initial position of the adjusting range of the adjusting valve core 2 is realized, and the adjustment of the flow adjusting valve in a specific range is further realized by matching with the side effect of the first set of thread. Meanwhile, the flow can be directly regulated by directly regulating the position of the valve core 2.

Further, the above adjustment mode ensures that at least one adjustment mode exists in the flow adjustment valve under any condition, so that the flow adjustment valve can be converted into a manual adjustment mode for normal use when the electrical system such as the driving motor 81 fails and cannot be adjusted. The second set of thread pairs is preferably adjusted a greater distance than the first set of thread pairs, for example 10-15mm.

On the basis of the above-described embodiment, as a further defined embodiment, at least a part of the positions of the adjusting valve housing 1 corresponding to the adjusting sleeve 7 are arranged in an open manner, and at least a part of the positions of the adjusting valve housing 1 corresponding to the adjusting sleeve 7 are arranged in an open manner, i.e., a part of the adjusting sleeve 7 is exposed out of the adjusting valve housing 1 so as to facilitate the rotational operation of the adjusting sleeve 7 by means of an external force.

Specifically, in this embodiment, the adjusting sleeve 7 itself can directly adopt a gear structure, and external teeth are provided on the outer wall of the adjusting sleeve 7, so that adjustment is facilitated.

On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 1, the adjusting valve housing 1 includes a valve cover 15, a driving seat 16 and a valve seat 17 which are disposed along the height direction, and the adjusting sleeve 7 is disposed at the junction between the driving seat 16 and the valve seat 17 to fix the position of the adjusting sleeve 7, limit the movement of the adjusting sleeve 7 in the height direction, and cooperate with a rotation limiting structure and a second set of screw pair to realize direct adjustment of the flow.

Specifically, as shown in fig. 1, the left end surface of the valve seat 17 is lower than the right end surface of the valve seat 17, and by providing the above-described height difference, a space for accommodating the adjustment sleeve 7 can be formed on the left side of the valve seat 17. Or a groove is provided on the left side of the valve seat 17 for mounting the adjusting sleeve 7. Further, the driving seat 16 and the valve seat 17 may be connected by plugging, and a certain damping is required to be provided, so as to avoid the disengagement between the driving seat and the valve seat.

In addition to the above embodiments, as further defined embodiments, as shown in fig. 1, 5 and 6, the flow rate regulating valve further includes:

the second accommodating chamber 14 is arranged inside the adjusting valve housing 1 and is arranged side by side with the first accommodating chamber 13, and the second accommodating chamber 14 is used for arranging a subsequent driving motor 81, a driving gear 82 and the like.

A drive assembly 8 comprising:

the driving motor 81 is arranged in the second accommodating cavity 14, the driving motor 81 is suitable for providing power for the rotation of the valve core 2 through transmission, and the driving motor 81 is used as external force to drive the valve core 2 to rotate, so that the cooperation action of the first set of thread pair is realized, and the stable operation of the flow regulating valve is realized conveniently and rapidly.

As a further limiting embodiment, as shown in fig. 1 and 5, the driving assembly 8 further includes: a drive gear 82 provided on the drive motor 81; a transmission gear 83 engaged with the driving gear 82; one end of a transmission shaft 84 is connected with the transmission gear 83, and the other end is nested at the upper end part of the valve core 2 and is suitable for driving the valve core 2 to rotate.

Specifically, as shown in fig. 1 and 5, power is transmitted to the valve core 2 through the driving motor 81, the driving gear 82, the transmission gear 83 and the transmission shaft 84, so that the valve core 2 is driven to rotate by using the driving motor 81 as external force, the matching action of the first set of thread pair is realized, and the stable operation of the flow regulating valve is realized conveniently and rapidly.

As a variant, the driving assembly 8 itself may be driven by a conveyor belt, in addition to a gear, and the specific driving means may be directly of a structure commonly used in the art, which is not limited herein.

As a further limiting embodiment, as shown in fig. 1, 5, 7 and 8, the transmission shaft 84 is provided with a first connecting portion 85, the spool 2 is provided with a second connecting portion 25 connected to the first connecting portion 85, and one of the first connecting portion 85 and the second connecting portion 25 is provided with a groove 251; the other of the first connecting portion 85 and the second connecting portion 25 is provided with a protrusion 851, the protrusion 851 acts in the slot 251 and can move relative to the slot 251, and the reciprocating motion of the valve core 2 in the height direction can be completed while the transmission shaft 84 drives the valve core 2 to rotate by a connection mode with a slot-shaped mating surface.

Specifically, as shown in fig. 8, a special structure may be provided between the protruding portion and the groove, and by the above-described structural arrangement, the protruding portion may be prevented from idling in the groove. As an embodiment, the slot may be provided with a "D" structure, and as another embodiment, in this embodiment, the slot 251 and the protrusion 851 may be provided in a flat shape, and after the protrusion rotates, the slot is further driven to rotate. Meanwhile, the groove position can be lifted relative to the convex part, and in order to realize the functions, a gap delta is formed between the convex part and the groove position so as to conveniently realize the relative movement of the groove position. Other equivalent means may be employed, such as a polygonal hole in the slot and a polygonal cylinder corresponding to the polygonal hole in the protrusion.

On the basis of the above embodiment, as a further limiting embodiment, as shown in fig. 1 and 5, the first fixing end 23 is an annular protruding portion arranged on the valve core 2, a sealing member 9 is sleeved on one side, away from the annular protruding portion, of the valve core 2, and the sealing member 9 is sleeved on one side, away from the annular protruding portion, of the valve core 2, so that the medium such as gas or liquid is prevented from being discharged out of the flow pipeline when passing through the flow pipeline.

The flow regulating valve provided by the embodiment can realize the following regulating modes:

automatic adjustment mode: the automatic adjustment of the flow regulating valve is realized by utilizing the driving component 8 to be matched with a first set of thread pairs between the valve core 2 and the first boss 51 on the regulating cylinder 5, so that the accurate initialization setting of the flow regulating valve is realized.

Manual adjustment mode: the manual adjustment of the flow regulating valve is realized by using a first set of thread pairs between the rotary piece arranged on the valve core 2 and the first boss 51 arranged on the regulating cylinder 5, so that the accurate initialization setting of the flow regulating valve is realized; the manual adjustment of the flow control valve is realized by utilizing a second set of thread pair between the adjusting sleeve 7 and the adjusting cylinder 5, and the adjustment of the flow control valve in a specific range is realized.

By the above-described modes, i.e., the manual adjustment mode and the electric adjustment mode, when the electric system such as the drive motor 81 fails and cannot be adjusted, the manual adjustment mode can be switched.

Furthermore, the flow regulating valve provided by the embodiment realizes the regulation of the flow regulating valve in a specific range, and simultaneously realizes the accurate setting of the reversing position of the reciprocating motion of the valve core 2 of the flow regulating valve, thereby overcoming the defect that the accurate initialization setting of the flow regulating valve is difficult to realize in the prior art.

Example 2

This embodiment provides a smoke generator, as shown in fig. 9, comprising:

the flow rate control valve 10 provided in embodiment 1, the flow rate control valve 10 acts on the smoke generator 101, and controls the fuel supply amount of the smoke generator 101.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. A flow regulating valve comprising:

a first accommodating cavity (13) is formed in the adjusting valve housing (1);

an inflow pipe (11) and an outflow pipe (12) provided in the regulator valve housing (1), the first accommodation chamber (13) being in communication with the inflow pipe (11) and the outflow pipe (12);

characterized by further comprising:

the valve core (2) is rotatably arranged in the first accommodating cavity (13), the lower end of the valve core (2) enters any one of the inflow pipeline (11) and the outflow pipeline (12), a first external thread (21) is arranged on the outer wall of the valve core (2), and a first fixed end (23) and/or a second fixed end (24) which are oppositely arranged are arranged on the valve core (2);

A first internal thread (52) disposed within the first receiving cavity (13), the first internal thread (51) being mated with the first external thread (21);

a first elastic member (3) disposed between the first external thread (21) and the first fixed end (23);

and/or a second elastic member (4) disposed between the second fixed end (24) and the first external thread (21);

the valve core (2) is suitable for rotating under the action of external force, so that the first external thread (21) has a first state of moving linearly in a first direction and being separated from the first internal thread (52); and a second state in which the first female screw (52) is disengaged by moving in the reverse direction in the second direction.

2. The flow regulating valve according to claim 1, characterized in that an adjusting cylinder (5) is arranged in the first accommodating cavity (13), the adjusting cylinder (5) is sleeved on the outer side of the valve core (2), a first boss (51) is arranged on the adjusting cylinder (5), the first boss (51) is provided with the first internal thread (52), and the first elastic piece (3) is arranged between the adjusting cylinder (5) and the first fixed end (23).

3. The flow regulating valve of claim 2, further comprising:

The baffle ring (6) is sleeved on the inner wall of the adjusting cylinder (5), the baffle ring (6) is arranged between the adjusting cylinder (5) and the valve core (2), a second boss (61) is arranged on the baffle ring (6), and one end of the second elastic piece (4) is propped against the second boss (61).

4. A flow regulating valve according to claim 3, characterized in that the valve cartridge (2) further comprises: and the limiting sleeve (41), the limiting sleeve (41) forms the second fixed end (24), and the second elastic piece (4) is clamped between the limiting sleeve (41) and the baffle ring (6).

5. The flow regulating valve according to any one of claims 2-4, further comprising: the rotation limiting structure is arranged on the adjusting cylinder (5) and used for limiting the rotation freedom degree of the adjusting cylinder (5).

6. The flow regulating valve of claim 5, wherein the rotation limiting structure comprises:

the limiting plane (53) is arranged on the outer wall of the adjusting cylinder (5);

and the limiting pin (54) acts on the limiting plane (53), and the limiting pin (54) is spatially parallel to the limiting plane (53).

7. The flow regulating valve of claim 5, further comprising:

A second external thread (55) arranged on the outer wall of the adjusting cylinder (5);

the adjusting sleeve (7) is arranged at a fixed height of the adjusting valve housing (1) and sleeved on the outer wall of the adjusting cylinder (5), and a second internal thread (71) matched with the second external thread (55) is arranged on the adjusting sleeve (7);

the adjusting sleeve (7) is suitable for rotating under the action of external force, so that the adjusting cylinder (5) drives the valve core (2) to move.

8. Flow control valve according to claim 7, characterized in that at least a part of the positions of the control valve housing (1) corresponding to the control sleeve (7) are arranged in an open manner.

9. Flow regulating valve according to claim 7, characterized in that the regulating valve housing (1) comprises a valve cover (15), a drive seat (16) and a valve seat (17) arranged in the height direction, the regulating sleeve (7) being arranged at the interface between the drive seat (16) and the valve seat (17).

10. The flow regulating valve according to claim 4, wherein a limiting table (22) is arranged at the upper end part of the valve core (2), and the limiting table (22) is abutted with one end, deviating from the second elastic piece (4), of the limiting sleeve (41).

11. The flow regulating valve of claim 1, further comprising:

A second receiving chamber (14) which is arranged inside the adjusting valve housing (1) and is arranged side by side with the first receiving chamber (13);

drive assembly (8), comprising: and a driving motor (81) arranged in the second accommodating cavity (14), wherein the driving motor (81) is suitable for providing power for the rotation of the valve core (2) through transmission.

12. The flow regulating valve according to claim 11, wherein the drive assembly (8) further comprises:

a drive gear (82) provided on the drive motor (81);

a transmission gear (83) meshed with the drive gear (82);

one end of a transmission shaft (84) is connected with the transmission gear (83), and the other end of the transmission shaft is nested at the upper end part of the valve core (2) and is suitable for driving the valve core (2) to rotate.

13. The flow regulating valve according to claim 12, wherein the transmission shaft (84) is provided with a first connecting portion (85), the spool (2) is provided with a second connecting portion (25) connected with the first connecting portion (85), and one of the first connecting portion (85) and the second connecting portion (25) is provided with a groove (251); a protruding part (851) is arranged on the other of the first connecting part (85) and the second connecting part (25), and the protruding part (851) acts in the groove (251) and can move relative to the groove (251).

14. The flow regulating valve according to claim 1, characterized in that the first fixed end (23) is an annular protruding part arranged on the valve core, and a sealing element (9) is sleeved on one side, away from the annular protruding part, of the valve core (2).

15. A smoke generator comprising:

the flow regulating valve (10) of any one of claims 1-14.