CN110645382A - Multi-stage throttling low-noise throttle valve structure - Google Patents
Multi-stage throttling low-noise throttle valve structure Download PDFInfo
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- CN110645382A CN110645382A CN201910881411.9A CN201910881411A CN110645382A CN 110645382 A CN110645382 A CN 110645382A CN 201910881411 A CN201910881411 A CN 201910881411A CN 110645382 A CN110645382 A CN 110645382A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Details Of Valves (AREA)
Abstract
The invention discloses a multi-stage throttling low-noise throttle valve structure, which comprises: the valve comprises a valve body, a first valve sleeve, a second valve sleeve, a first valve core, a second valve core and a gland; a first throttling cavity and a second throttling cavity are arranged on the valve body side by side, and a middle channel is formed between the first throttling cavity and the second throttling cavity; the first valve sleeve is sleeved in the first throttling cavity, the second valve sleeve is sleeved in the second throttling cavity, and pressure oil flows in from the bottom of the first valve sleeve and flows out from the bottom of the second valve sleeve through the middle channel; the gland is arranged at the top of the valve body; one end of the first valve core penetrates through the gland and is arranged in the inner cavity of the first valve sleeve, the other end of the first valve core is arranged on the outer side of the gland, and the first valve core moves in the gland and the first valve sleeve; one end of the second valve core penetrates through the gland and is arranged in the inner cavity of the second valve sleeve, the other end of the second valve core is arranged on the outer side of the gland, and the second valve core moves in the gland and the second valve sleeve. The throttle valve structure can reduce system vibration noise and improve equipment reliability.
Description
Technical Field
The invention relates to the technical field of hydraulic throttle valves, in particular to a multi-stage throttling low-noise throttle valve structure.
Background
The hydraulic throttle valve is a common element in a hydraulic system, and realizes the flow regulation of oil circuit hydraulic pressure in a valve body by changing the position of a valve core. The existing hydraulic throttle valve is generally of a seat valve type structure, a valve core and a valve body are in axial conical surface throttling, a throttling surface is an annular conical surface, the throttling is concentrated, cavitation throttling noise and turbulent flow noise are easily generated, meanwhile, the structure can bring large scouring to a sealing surface of the valve body due to the concentrated throttling, and the problems of large vibration noise and serious scouring exist although the structure is simple. The vibration reduction and noise reduction performance of the hydraulic system is influenced, and the problem of equipment damage is also caused. In a ship hydraulic system, more and more attention is paid to vibration noise of equipment, and the existing hydraulic throttle valve cannot meet the requirement.
Therefore, it is an urgent need to solve the problem of those skilled in the art to develop a hydraulic throttle valve that can reduce system vibration noise and improve equipment reliability.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-stage throttle low noise throttle valve arrangement comprising: the valve comprises a valve body, a first valve sleeve, a second valve sleeve, a first valve core, a second valve core and a gland;
a first throttling cavity and a second throttling cavity are arranged on the valve body side by side, two ends of the first throttling cavity and two ends of the second throttling cavity are in an opening shape, and a middle channel is arranged between the first throttling cavity and the second throttling cavity;
the first valve sleeve and the second valve sleeve are both hollow and open at two ends, and throttling holes are formed in the side walls of the first valve sleeve and the second valve sleeve; the first valve sleeve is sleeved in the first throttling cavity, the second valve sleeve is sleeved in the second throttling cavity, and pressure oil flows in from the bottom of the first valve sleeve, flows through the middle channel and flows out from the bottom of the second valve sleeve;
the gland is arranged at the top of the valve body and used for sealing the first throttling cavity and the second throttling cavity;
one end of the first valve core penetrates through the gland and is arranged in the inner cavity of the first valve sleeve, the other end of the first valve core is arranged on the outer side of the gland, and the first valve core moves in the gland and the first valve sleeve;
one end of the second valve core penetrates through the gland and is arranged in the inner cavity of the second valve sleeve, the other end of the second valve core is arranged on the outer side of the gland, and the second valve core moves in the gland and the second valve sleeve.
The technical scheme has the advantages that the pressure oil entering the first valve sleeve enters the middle channel through the throttling hole, enters the second valve sleeve through the throttling hole of the second valve sleeve after passing through the middle channel, and flows out of the bottom of the second valve sleeve, and the throttling hole can increase the contact surface of the fluid flowing through the throttling area, increase the friction force of the fluid and further reduce the throttling noise; the first valve core and the second valve core can independently adjust the valve positions, and the front-back pressure drop ratio can be flexibly adjusted, so that the pressure drop ratio of the throttle valve is optimized, and the vibration noise can be better reduced.
Preferably, the first valve housing includes: first interior valve barrel and first outer valve barrel, first interior valve barrel cover is established the inside of first outer valve barrel, first interior valve barrel and first outer valve barrel are close to evenly set up a plurality of first orifices on the annular lateral wall of intermediate channel axis department. Pressure oil can enter the middle channel only by sequentially passing through the first throttling hole in the first inner valve sleeve and the first throttling hole in the first outer valve sleeve, so that the pressure oil is subjected to multi-stage flow division, the pressure loss born by each stage of throttling is reduced, and the pressure drop is lower, thereby being more beneficial to reducing throttling noise.
Preferably, the first outer valve sleeve is provided with the side wall of the first throttling hole, and the side wall of the first throttling hole is sunken towards the inside of the side wall of the first outer valve sleeve to form a first annular groove, so that a certain distance is reserved between the side walls of the first throttling hole of the first inner valve sleeve and the first outer valve sleeve, and a multi-stage flow distribution process is better realized.
Preferably, the top edge of the first inner valve sleeve extends outwards and is arranged at the top of the first outer valve sleeve, the tops of the first inner valve sleeve and the first outer valve sleeve are connected through screws, and the top of the first inner valve sleeve is connected with the gland through screws. The connection between the first inner valve sleeve and the first outer valve sleeve, and between the first inner valve sleeve and the gland is firmer.
Preferably, the second valve housing includes: the valve barrel comprises a second inner valve sleeve and a second outer valve sleeve, the second inner valve sleeve is sleeved inside the second outer valve sleeve, and a plurality of second throttling holes are uniformly formed in the annular side wall, close to the axis of the middle channel, of the second inner valve sleeve and the second outer valve sleeve. Pressure oil needs to sequentially pass through a second throttling hole in the second inner valve sleeve and a second throttling hole in the second outer valve sleeve to enter the second inner valve sleeve, so that the pressure oil is subjected to multi-stage shunting, the pressure loss born by each stage of throttling is reduced, and the pressure drop is lower, which is more beneficial to reducing throttling noise.
Preferably, the side wall of the second outer valve sleeve, which is provided with the second throttling hole, is recessed towards the inside of the side wall of the second outer valve sleeve to form a second annular groove, so that a certain distance is reserved between the side walls of the second inner valve sleeve and the second outer valve sleeve, which are provided with the second throttling hole, and a multi-stage shunting process is better realized.
Preferably, the top edge of the second inner valve sleeve extends outwards and is arranged at the top of the second outer valve sleeve, the tops of the second inner valve sleeve and the second outer valve sleeve are connected through screws, and the top of the second inner valve sleeve is connected with the gland through screws. The connection between the second inner valve sleeve and the second outer valve sleeve, and the connection between the second inner valve sleeve and the gland are firmer.
Preferably, the side wall of the bottom of the first valve core is in clearance fit with the first inner valve sleeve, the middle part of the first valve core is in threaded connection with the gland, and the top of the first valve core is connected with a first handle for driving the first valve core to rotate; the side wall of the bottom of the second valve core is in clearance fit with the second inner valve sleeve, the middle part of the second valve core is in threaded connection with the gland, and the top of the second valve core is connected with a second handle used for driving the second valve core to rotate. The first handle and the second handle can be respectively and independently operated to carry out rotary motion on the first valve core and the second valve core, so that the first valve core and the second valve core can move up and down in the first inner valve sleeve and the second inner valve sleeve.
Preferably, a through hole convenient for processing the middle channel is formed in the side wall, opposite to the middle channel, of the first throttling cavity, and a plug is arranged in the through hole. The through hole is arranged so that a cutter can conveniently stretch into the valve body to process the middle channel during processing, and the through hole is blocked by a plug after the middle channel is processed, so that oil leakage at the through hole is prevented.
Preferably, sealing rings are arranged at the joints of the first valve core and the gland, the second valve core and the gland, the gland and the first inner valve sleeve, the gland and the second inner valve sleeve, the first inner valve sleeve and the first outer valve sleeve, the second inner valve sleeve and the second outer valve sleeve, the valve body and the first outer valve sleeve, the valve body and the second outer valve sleeve, and the valve body and the plug. The sealing ring is arranged to enable connection among the components to be more tight, and oil leakage is avoided.
Through the technical scheme, compared with the prior art, the invention discloses a multi-stage throttling low-noise throttling valve structure, which has the beneficial effects that:
(1) according to the invention, pressure oil needs to pass through the first inner valve sleeve, the first outer valve sleeve, the second inner valve sleeve and the second outer valve sleeve to realize four-stage pressure reduction throttling, the multistage throttling can reduce the pressure loss born by each stage of throttling, and the lower the pressure drop, the more beneficial to reducing the throttling noise;
(2) the arrangement of the first throttling hole and the second throttling hole can increase the contact surface of pressure oil flowing through the throttling area, increase the friction force of the fluid and further reduce the throttling noise;
(3) the first valve core and the second valve core can independently adjust the valve positions, flexibly adjust the front-to-back pressure drop ratio, optimize the pressure drop ratio for the throttle valve and be more beneficial to reducing vibration noise.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional view of a throttle valve configuration provided by the present invention;
fig. 2 is a cross-sectional view of a first valve sleeve provided in accordance with the present invention;
fig. 3 is a cross-sectional view of a first inner valve sleeve provided in accordance with the present invention;
fig. 4 is a cross-sectional view of a first outer valve sleeve provided in accordance with the present invention;
FIG. 5 is a schematic structural view of a valve cartridge provided by the present invention;
fig. 6 is a schematic structural diagram of a valve body provided by the invention.
Wherein, in the figure,
1-a valve body;
11-a first throttling chamber; 12-a second throttling cavity; 13-an intermediate channel;
2-a first valve housing;
21-a first inner valve sleeve;
22-a first outer valve sleeve;
221-a first annular groove;
23-a first orifice;
3-a second valve housing;
31-a second inner valve sleeve;
32-a second outer valve sleeve;
321-a second annular groove;
33-a second orifice;
4-a first valve core; 5-a second valve core; 6-pressing the cover; 7-a first handle; 8-a second handle; 9-plug screw; 10-sealing ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but 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" and "first" 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" or "second" 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 specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1-6, the embodiment of the present invention discloses a multi-stage throttling low-noise throttle valve structure, which comprises: the valve comprises a valve body 1, a first valve sleeve 2, a second valve sleeve 3, a first valve core 4, a second valve core 5 and a gland 6; a first throttling cavity 11 and a second throttling cavity 12 are arranged on the valve body 1 side by side, two ends of the first throttling cavity 11 and two ends of the second throttling cavity 12 are in an opening shape, and a middle channel 13 is arranged between the first throttling cavity 11 and the second throttling cavity 12; the first valve sleeve 2 and the second valve sleeve 3 are both hollow and have openings at two ends, and throttling holes are arranged on the side walls of the first valve sleeve and the second valve sleeve; the first valve sleeve 2 is sleeved in the first throttling cavity 11, the second valve sleeve 3 is sleeved in the second throttling cavity 12, and pressure oil flows in from the bottom of the first valve sleeve 2 and flows out from the bottom of the second valve sleeve 3 through the middle channel 13; the gland 6 is arranged at the top of the valve body 1 and is used for sealing the first throttling cavity 11 and the second throttling cavity 12; one end of the first valve core 4 passes through the gland 6 and is arranged in the inner cavity of the first valve sleeve 2, the other end of the first valve core is arranged on the outer side of the gland 6, and the first valve core 4 moves in the gland 6 and the first valve sleeve 2; one end of the second valve core 5 is arranged in the inner cavity of the second valve sleeve 3 through the gland 6, the other end is arranged on the outer side of the gland 6, and the second valve core 5 moves in the gland 6 and the second valve sleeve 3.
In order to further optimize the above technical solution, the first valve housing 2 comprises: the valve comprises a first inner valve sleeve 21 and a first outer valve sleeve 22, wherein the first inner valve sleeve 21 is sleeved inside the first outer valve sleeve 22, and a plurality of first throttling holes 23 are uniformly formed in annular side walls of the first inner valve sleeve 21 and the first outer valve sleeve 22, which are close to the axis of the middle channel 13. The height of the first throttle hole 23 is close to the intermediate passage 13, so that the pressure oil can easily enter the intermediate passage 13 from the first throttle hole 23.
In order to further optimize the above technical solution, the side wall of the first outer valve sleeve 22 where the first throttle hole 23 is provided is recessed inwardly of the side wall of the first outer valve sleeve 22 to form a first annular groove 221.
In order to further optimize the above technical solution, the top edge of the first inner valve sleeve 21 extends outwards and is placed on the top of the first outer valve sleeve 22, the tops of the first inner valve sleeve 21 and the first outer valve sleeve 22 are connected by screws, and the top of the first inner valve sleeve 21 is connected with the gland 6 by screws.
In order to further optimize the above solution, the second valve housing 3 comprises: the valve comprises a second inner valve sleeve 31 and a second outer valve sleeve 32, the second inner valve sleeve 31 is sleeved inside the second outer valve sleeve 32, and a plurality of second throttling holes 33 are uniformly formed in annular side walls of the second inner valve sleeve 31 and the second outer valve sleeve 32, which are close to the axis of the middle channel 13.
In order to further optimize the above technical solution, the side wall of the second outer valve sleeve 32 where the second throttle hole 33 is provided is recessed inwardly of the side wall of the second outer valve sleeve 32 to form a second annular groove 321.
In order to further optimize the above technical solution, the top edge of the second inner valve sleeve 31 extends outwards and is placed on the top of the second outer valve sleeve 32, the tops of the second inner valve sleeve 31 and the second outer valve sleeve 32 are connected by screws, and the top of the second inner valve sleeve 31 is connected with the gland 6 by screws.
In order to further optimize the technical scheme, the side wall of the bottom of the first valve core 4 is in clearance fit with the first inner valve sleeve 21, the middle part of the first valve core is in threaded connection with the gland 6, and the top of the first valve core is connected with a first handle 7 for driving the first valve core 4 to rotate; the side wall of the bottom of the second valve core 5 is in clearance fit with the second inner valve sleeve 31, the middle part of the second valve core is in threaded connection with the gland 6, and the top of the second valve core is connected with a second handle 8 for driving the second valve core 5 to rotate. The outer sides of the tops of the first valve core 4 and the second valve core 5 are in an outer hexagonal surface structure and are connected with the inner hexagonal surfaces of the first handle 7 and the second handle 8.
In order to further optimize the technical scheme, as shown in fig. 1, a first handle 7 and a second handle 8 are in contact with a gland 6, when the positions of a first valve core 4 and a second valve core 5 are adjusted, screws are arranged on the side walls of the first handle 7 and the second handle 8, the bottoms of the screws are in contact with the outer end face of the gland 6 to generate friction force, a valve position locking function is achieved, and the first handle 7 and the second handle 8 can be freely rotated when the screws are loosened.
In order to further optimize the technical scheme, as shown in fig. 5, the bottoms of the first valve core 4 and the second valve core 5 are cylindrical, and small holes are formed in the surfaces of the first valve core 4 and the second valve core 5 to communicate the upper cavity and the lower cavity of the first valve core 4 and the second valve core 5, so that in the process of up-and-down movement of the first valve core 4 and the second valve core 5, oil in the upper cavity of the first valve core 4 and the second valve core 5 is prevented from forming a closed cavity or being pumped into negative pressure, and the first valve core 4 and the second valve core 5 generate acting force opposite to the movement direction, so that the first valve core 4 and the second valve core 5 cannot.
In order to further optimize the technical scheme, a through hole convenient for processing the middle channel 13 is formed in the side wall, opposite to the middle channel 13, of the first throttling cavity 11, and a plug 9 is arranged in the through hole.
In order to further optimize the technical scheme, sealing rings 10 are arranged at the joints of the first valve spool 4 and the gland 6, the second valve spool 5 and the gland 6, the gland 6 and the first inner valve sleeve 21, the gland 6 and the second inner valve sleeve 31, the first inner valve sleeve 21 and the first outer valve sleeve 22, the second inner valve sleeve 31 and the second outer valve sleeve 32, the valve body 1 and the first outer valve sleeve 22, the valve body 1 and the second outer valve sleeve 32, and the valve body 1 and the plug 9. In order to isolate oil in the throttle valve and avoid leakage, sealing rings 10 are arranged among all parts for oil sealing.
The working principle is as follows:
the pressure oil enters the first annular groove 221 of the first outer valve sleeve 22 from the inlet at the bottom of the first inner valve sleeve 21 to the first throttle hole 23 of the first inner valve sleeve 21 through which the pressure oil passes after entering the interior of the first inner valve sleeve 21, is accumulated there, enters the first throttle hole 23 of the first outer valve sleeve 22 to be carried to the outside of the first outer valve sleeve 22, then reaches the outside of the second outer valve sleeve 32 through the intermediate channel 13, enters the second annular groove 321 of the second outer valve sleeve 32 through the second throttle hole 33 of the second outer valve sleeve 32, is accumulated there, enters the interior of the second inner valve sleeve 31 through the second throttle hole 33 of the second inner valve sleeve 31, and then flows out from the outlet at the bottom of the second inner valve sleeve 31. In the process, the positions of the first valve core 4 and the second valve core 5 can be independently adjusted by independently adjusting the first handle 7 and the second handle 8, so that the pressure drop ratio between the first valve core 4 and the second valve core 5 is different in proportion.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A multi-stage throttle low noise throttle valve structure, comprising: the valve comprises a valve body (1), a first valve sleeve (2), a second valve sleeve (3), a first valve core (4), a second valve core (5) and a gland (6);
a first throttling cavity (11) and a second throttling cavity (12) are arranged on the valve body (1) side by side, two ends of the first throttling cavity (11) and the second throttling cavity (12) are in an opening shape, and a middle channel (13) is arranged between the first throttling cavity (11) and the second throttling cavity (12);
the first valve sleeve (2) and the second valve sleeve (3) are both hollow and open at two ends, and throttling holes are formed in the side walls of the first valve sleeve and the second valve sleeve; the first valve sleeve (2) is sleeved in the first throttling cavity (11), the second valve sleeve (3) is sleeved in the second throttling cavity (12), and pressure oil flows in from the bottom of the first valve sleeve (2) and flows out from the bottom of the second valve sleeve (3) through the middle channel (13);
the gland (6) is arranged at the top of the valve body (1) and is used for sealing the first throttling cavity (11) and the second throttling cavity (12);
one end of the first valve core (4) penetrates through the gland (6) and is arranged in the inner cavity of the first valve sleeve (2), the other end of the first valve core is arranged on the outer side of the gland (6), and the first valve core (4) moves in the gland (6) and the first valve sleeve (2);
one end of the second valve core (5) penetrates through the gland (6) and is arranged in the inner cavity of the second valve sleeve (3), the other end of the second valve core is arranged on the outer side of the gland (6), and the second valve core (5) moves in the gland (6) and the second valve sleeve (3).
2. A multi-stage throttle low noise throttle valve structure as defined in claim 1, characterized in that said first valve housing (2) comprises: first interior valve barrel (21) and first outer valve barrel (22), first interior valve barrel (21) cover is established the inside of first outer valve barrel (22), first interior valve barrel (21) and first outer valve barrel (22) are close to evenly set up a plurality of first orifices (23) on the annular side wall of intermediate channel (13) axis department.
3. The multiple throttle low noise throttle valve structure as defined in claim 2, wherein the side wall of said first outer valve sleeve (22) where said first throttle hole (23) is provided is recessed inwardly of the side wall of said first outer valve sleeve (22) to form a first annular groove (221).
4. A multi-stage throttling and low-noise throttling valve structure according to claim 2 or 3, wherein the top edge of the first inner valve sleeve (21) extends outwards and is placed on the top of the first outer valve sleeve (22), the tops of the first inner valve sleeve (21) and the first outer valve sleeve (22) are connected through screws, and the top of the first inner valve sleeve (21) is connected with the gland (6) through screws.
5. The multiple throttle low noise throttle valve structure as defined in claim 4, wherein said second valve sleeve (3) comprises: valve barrel (31) and second outer valve barrel (32) in the second, valve barrel (31) cover is established in the second inside of valve barrel (32) outside the second, valve barrel (31) and second outer valve barrel (32) are close to in the second evenly set up a plurality of second orifices (33) on the annular side wall of intermediate channel (13) axis department.
6. The multiple throttle low noise throttle valve structure as defined in claim 5, wherein the side wall of said second outer valve sleeve (32) where said second throttle hole (33) is provided is recessed inwardly of the side wall of said second outer valve sleeve (32) to form a second annular groove (321).
7. The structure of multi-stage throttling and low noise throttle valve according to claim 5 or 6, characterized in that the top edge of the second inner valve sleeve (31) extends outwards and is placed on the top of the second outer valve sleeve (32), the top of the second inner valve sleeve (31) and the top of the second outer valve sleeve (32) are connected by screws, and the top of the second inner valve sleeve (31) is connected with the gland (6) by screws.
8. The structure of the multi-stage throttling and low-noise throttling valve according to claim 7, wherein the side wall of the bottom of the first valve core (4) is in clearance fit with the first inner valve sleeve (21), the middle part of the first valve core is in threaded connection with the gland (6), and the top of the first valve core is connected with a first handle (7) for driving the first valve core (4) to rotate;
the side wall of the bottom of the second valve core (5) is in clearance fit with the second inner valve sleeve (31), the middle part of the second valve core is in threaded connection with the gland (6), and the top of the second valve core is connected with a second handle (8) used for driving the second valve core (5) to rotate.
9. The multi-stage throttling low-noise throttling valve structure according to claim 8, wherein a through hole for processing the intermediate passage (13) is formed in the side wall of the first throttling chamber (11) opposite to the intermediate passage (13), and a plug (9) is arranged in the through hole.
10. The multi-stage throttling low-noise throttle valve structure according to claim 9, wherein sealing rings (10) are disposed at the joints of the first valve spool (4) and the gland (6), the second valve spool (5) and the gland (6), the gland (6) and the first inner valve sleeve (21), the gland (6) and the second inner valve sleeve (31), the first inner valve sleeve (21) and the first outer valve sleeve (22), the second inner valve sleeve (31) and the second outer valve sleeve (32), the valve body (1) and the first outer valve sleeve (22), the valve body (1) and the second outer valve sleeve (32), and the valve body (1) and the plug (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881411.9A CN110645382A (en) | 2019-09-18 | 2019-09-18 | Multi-stage throttling low-noise throttle valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881411.9A CN110645382A (en) | 2019-09-18 | 2019-09-18 | Multi-stage throttling low-noise throttle valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110645382A true CN110645382A (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910881411.9A Pending CN110645382A (en) | 2019-09-18 | 2019-09-18 | Multi-stage throttling low-noise throttle valve structure |
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| CN (1) | CN110645382A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606361A (en) * | 2021-08-02 | 2021-11-05 | 徐州莫大新材料科技有限公司 | Liquid device is joined in marriage with high efficiency to production of degradable solid water of moisturizing |
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| US5469880A (en) * | 1994-12-16 | 1995-11-28 | Tetra Laval Holdings & Finance, S.C. | Manifold valve assemblies with cleaning solution supply |
| CN202418898U (en) * | 2012-01-09 | 2012-09-05 | 济南大学 | Sleeve-type noise reducing and pressure reducing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113606361A (en) * | 2021-08-02 | 2021-11-05 | 徐州莫大新材料科技有限公司 | Liquid device is joined in marriage with high efficiency to production of degradable solid water of moisturizing |
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