CN112984169A - Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve - Google Patents
Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve Download PDFInfo
- Publication number
- CN112984169A CN112984169A CN202110305904.5A CN202110305904A CN112984169A CN 112984169 A CN112984169 A CN 112984169A CN 202110305904 A CN202110305904 A CN 202110305904A CN 112984169 A CN112984169 A CN 112984169A
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- valve body
- inlet
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention relates to the field of check valves, and discloses an energy-saving multifunctional pressure-stabilizing pressure-holding axial flow check valve which comprises a valve body, a valve core, a valve body inner container, a valve seat and a pilot valve, wherein the valve core and the valve body inner container are arranged inside the valve body, the pilot valve is arranged outside the valve body, cavities are formed inside the valve core and the valve body inner container and can move relatively, and the valve seat is arranged at an inlet of the valve body.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to an energy-saving multifunctional pressure-stabilizing and pressure-maintaining axial flow check valve.
Background
The coriolis-type mass flowmeter is a common instrument for measuring mass flow, wherein the insufficient back pressure is a main influence factor of errors in the measurement of the mass flowmeter, so that the problem that how to operate the mass flowmeter in a stable pressure environment under the condition of saving energy consumption needs to be solved urgently, and a device capable of realizing multiple functions of pressure stabilization, non-return and adjustment is needed.
Disclosure of Invention
In order to solve the above problems, in some embodiments of the present application, an energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve is provided, including a valve body, a valve core, a valve body liner, a valve seat and a pilot valve, where the valve core and the valve body liner are arranged inside the valve body, the pilot valve is arranged outside the valve body, the valve seat is arranged at an inlet of the valve body, a cavity is formed inside the valve core and the valve body liner and can move relatively, and when the pressure at the inlet of the valve body is smaller than a set value, the pressure inside the cavity pushes the valve core to move towards the inlet direction and tightly attach to the valve seat, so as; when the pressure of the inlet of the valve body is above a set value, when a medium passes through the pilot valve, the pilot valve opens the pressure in the inner container of the valve body to be released, the medium flows in from the outlet of the valve body, the pressure of the medium at the inlet pushes the valve core to move towards the outlet, the check valve is opened, the valve core is driven to do bidirectional sliding respectively according to the pressure of the medium per se, the opening or closing of the check valve is controlled, the effect of stably maintaining the pressure of the medium is achieved, the energy consumption is saved due to the medium driving per se, external control is.
In some embodiments of the present application, an energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve is disclosed, comprising: the valve comprises a valve body, a valve core, a valve body inner container and a pilot valve; the valve body liner is sleeved inside the valve body; the opening of the valve core and the opening of the valve body liner are oppositely sleeved, so that the outer surface of the valve core is attached to the inner surface of the valve body liner, the valve core and the valve body liner can move relatively, and a cavity is formed between the valve core and the valve body liner; the pilot valve is communicated with the cavity and the interior of the valve body.
In some embodiments of the present application, a shaft body having a hollow interior is disposed inside the valve body inner container, and the hollow interior extends from a free end of the shaft body to the outside of the valve body inner container; the valve core is internally provided with an inserting shaft, when the valve core and the valve body liner are sleeved, the inserting shaft is inserted into the hollow part, and the inserting shaft can slide in the hollow part.
In some embodiments of the present application, the valve body includes an inlet, an outlet, and a structural portion, the inlet and the outlet being disposed at both ends of the valve body, respectively; the structure part is arranged in the valve body and is used for being sleeved and connected with the valve core; the inlet, the structural part and the outlet are internally communicated.
Some embodiments of the present application further comprise: the valve seat is arranged at the inlet, and the joint is arranged inside the inlet.
In some embodiments of the present application, the valve body further comprises a first passageway, a second passageway, and a third passageway; the first passage is arranged at the inlet and is used for communicating the inner side of the inlet with the outer part of the valve body; the second passage is provided at the structural portion for communicating an inside of the structural portion with an outside of the valve body; the third passage is provided at the outlet for communicating the inside of the outlet with the outside of the valve body.
In some embodiments of the present application, the energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve further comprises a first flow guide pipe, a second flow guide pipe and a third flow guide pipe; one end of the first flow guide pipe is connected with a first passage, and the other end of the first flow guide pipe is connected with a first inlet of the pilot valve; one end of the second flow guide pipe is connected with a third passage, and the other end of the second flow guide pipe is connected with the first outlet of the pilot valve; a second outlet of the pilot valve is connected with a second passage; one end of the third flow guide pipe is connected to the first passage, and the other end of the third flow guide pipe is connected to the second inlet of the pilot valve. .
In some embodiments of the present application, the energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve further comprises a buffering part, the buffering part is provided with a through hole, and the through hole is communicated with the hollow part of the valve body inner container.
In some embodiments of the present application, a spring is disposed at an outer side of the shaft body and the spindle, and the spring is used for providing an elastic force for the movement of the valve element.
In some embodiments of the present application, the check valve is self-actuated to close when the front end pressure is less than a set value a; when the front end pressure of the check valve is higher than a set value a, the check valve is driven to open by itself.
In some embodiments of the present application, the range of the set value a is: a is more than or equal to n MPa and less than or equal to 2.5n MPa.
In some embodiments of the present application, the control method of the energy-saving multifunctional pressure-stabilizing and pressure-maintaining axial flow check valve is as follows:
when the pressure of the front end of the check valve is smaller than the set value a, a medium enters the third flow guide pipe through the first passage at the inlet and further enters the cavity through the second passage, the pressure of the medium in the cavity and the elastic force of the spring push the valve core to slide in the direction of the inlet and slide to the position of the valve seat, the valve core is in sealing fit with the valve seat, and the check valve is closed;
when the pressure of the front end of the check valve is above the set value a, a medium enters the first guide pipe and the third guide pipe through the first passage at the inlet, a medium in the third guide pipe enters the cavity through the second passage, the pilot valve is opened when the medium in the first guide pipe passes through the pilot valve and is communicated with the second guide pipe, the medium enters the outlet position of the valve body through the second guide pipe and the third passage, the valve core slides towards the outlet direction, and the check valve is opened.
This application is through setting up the cavity between case and valve body inner bag to make the case slide relatively the valve body inner bag, and set up the pilot valve externally and control opening and closing of pipe, thereby make the medium flow to different positions under different pressure, utilize the pressure of medium itself, control opening and closing of check valve, under the unnecessary energy consumption circumstances of not needing completely, make the check valve maintain the pipeline normally effective operation under the pressure of settlement automatically completely.
Drawings
FIG. 1 is an external structural view of an energy-saving multifunctional pressure-stabilizing axial flow check valve according to an embodiment of the present invention;
FIG. 2 is an internal structure view of an energy-saving type multifunctional pressure-stabilizing pressure-maintaining axial flow check valve in an embodiment of the present invention;
FIG. 3 is a structural diagram of a valve body liner of the energy-saving multifunctional pressure-stabilizing axial flow check valve in the embodiment of the invention;
FIG. 4 is a valve core structure diagram of an energy-saving multifunctional pressure-stabilizing axial flow check valve in an embodiment of the invention;
FIG. 5 is a block diagram of an energy-saving multifunctional pressure-stabilizing axial flow check valve according to an embodiment of the present invention;
fig. 6 is a valve seat structure diagram of an energy-saving multifunctional pressure-stabilizing axial flow check valve in an embodiment of the invention.
In the figure, 100, valve body; 110. an inlet; 120. an outlet; 130. a structural part; 140. an installation part; 101. a first path; 102. a second path; 103. a third path; 200. a valve core, 210 and an insert shaft; 300. a valve body inner container; 310. a shaft body; 311. a hollow part; 312. a communicating portion; 400. a pilot valve; 401 a first draft tube; 402. a second draft tube; 403. a third draft tube; 404. a filter; 500. a cavity; 501. a spring; 600. a buffer section; 700. a valve seat; .
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the present application, the direction or positional relationship indicated by "inner" is the side closer to the geometric center of the material handling apparatus based on the drawings, and the direction or positional relationship indicated by "outer" is the side away from the geometric center of the material handling apparatus based on the drawings.
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 application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.
In some embodiments of the present application, as shown in fig. 2, an energy-saving multifunctional pressure-stabilizing and pressure-maintaining axial flow check valve comprises a valve body 100, a valve core 200, a valve body inner container 300 and a pilot valve 400.
In some embodiments of the present application, as shown in fig. 5, the valve body 100 includes an inlet 110, an outlet 120, a structural portion 130, a first passage 101, a second passage 102, and a third passage 103.
The valve body 100 is a hollow shell, the two sides of the valve body 100 are provided with an inlet 110 and an outlet 120 which are coaxial, the hollow inside the valve body 100 is communicated with the outside through the inlet 110 and the outlet 120, the inside of the valve body 100 is also provided with a structural part 130, the aperture of the structural part 130 is equal to the external diameter of the valve body liner 300, the valve body liner 300 is connected with the structural part 130 in a matched manner, the structural part 130 is provided with a hole shoulder which is matched with the shaft shoulder of the valve body liner 300, and the axial positioning of the valve body liner 300 is realized.
It should be noted that the valve body 100 plays a supporting role in the energy-saving multifunctional pressure-stabilizing axial-flow check valve, and defines the relative positions of the components.
In some embodiments of the present application, as shown in fig. 5, the valve body 100 is further provided with a first passage 101, a second passage 102 and a third passage 103, the first passage 101 is provided at the inlet 110, extends from the inner side surface at the inlet 110 of the valve body 100 to the outside, and communicates the inside and the outside of the valve body 100 at the inlet 110; the second passage 102 is provided in the structure portion 130, extends from the inner hole side surface of the structure portion 130 to the outside, is provided in a position close to the hole shoulder, and connects the inside and the outside in the structure portion 130; the third passage 103 is provided at the outlet 120, extends from the inside side at the outlet 120 of the valve body 100 to the outside, and communicates the inside and the outside of the valve body 100 at the outlet 120.
It should be noted that, the medium needs to be guided to the outside in the valve body 100, so that the medium can realize different circulation modes in different pressure environments, thereby realizing the opening and closing of the check valve, and three passages are arranged at different positions of the check valve to realize a circulation passage.
In some embodiments of the present application, as shown in fig. 1, the valve body 100 is further provided with a mounting portion 140, the mounting portion 140 is provided at an outer side of the inlet 110 and the outlet 120, and is a baffle structure extending outward in a radial direction, and a mounting hole is provided on the baffle structure for mounting on an apparatus.
It should be noted that the valve body 100 needs to be fixedly installed on the equipment, the integrated installation part 140 is directly arranged on the valve body 100, and the valve body 100 is fixed on the equipment by passing a screw through the installation hole, so that the installation is firm, and the disassembly is convenient.
In some embodiments of the present invention, as shown in fig. 3, the valve body inner container 300 has a structure with one end closed and the other end open, the valve body inner container 300 is further provided with a shaft body 310, the shaft body 310 extends from the closed end to the open end, a hollow portion 311 is provided inside the shaft body 310, the hollow portion 311 extends from the free end of the shaft body 310 to the outside of the valve body inner container 300, and the inside of the valve body inner container 300 is communicated with the outside of the valve body inner container 300 through the hollow portion 311.
The valve body liner 300 is matched and connected with the structure part 130 of the valve body 100, the inner side of the structure part 130 is attached and connected with the outer part of the valve body liner 300, the closed end of the valve body liner 300 is arranged at one end close to the outlet 120, and the open end of the valve body liner 300 is arranged at one end close to the inlet 110; the valve body inner container 300 is also provided with a communicating part which communicates the inside and the outside of the valve body inner container 300, when the valve body inner container 300 is matched with the valve body 100, the communicating part is communicated with the second passage 102, so that the second passage 102 is communicated with the inside of the valve body inner container 300, and then the outside of the valve body 100 is communicated with the inside of the valve body inner container 300.
It should be noted that, since it is necessary to adjust the valve body 200 by allowing the medium to enter the valve body inner 300, the communicating portion 312 is provided in the valve body inner 300, so that the medium enters the communicating portion 312 through the second passage 102 and then enters the valve body inner 300, and the communicating portion 312 guides the medium entering the valve body inner 300.
In some embodiments of the present application, as shown in fig. 4, the valve core 200 is a housing structure with one end closed and the other end open, and the plug shaft 210 extends from the closed end to the open end, and the outer diameter of the valve core 200 is equal to the inner diameter of the valve body liner 300.
The opening of the valve core 200 and the opening of the valve body liner 300 are relatively sleeved, the valve body liner 300 is sleeved outside the valve core 200, so that the inner surface of the valve body liner 300 is attached to and connected with the outer surface of the valve core 200 and slides relatively, and when the valve core 200 and the valve body liner 300 are sleeved, the insertion shaft 210 extends into the hollow portion 311, is attached to and connected with the inside of the hollow portion 311, and can move inside the hollow portion 311.
After the valve body liner 300 and the valve core 200 are relatively sleeved, a closed cavity 500 is formed inside the valve body liner, and the cavity 500 can be communicated with the second passage 102 through a communicating part.
It should be noted that, the valve element 200 is connected with the shaft body 310 of the valve body inner container 300 by arranging the insert shaft 210, so that the valve element 200 and the valve body inner container 300 slide relatively, after a medium enters the cavity 500, thrust can be generated on the valve element 200 according to different pressures, and by arranging the insert shaft 210 and the shaft body 310, the stability of the relative sliding is improved, and the contact area between the medium and the valve element 200 is increased, when the medium enters the cavity 500, because the pressure inside the cavity 500 is equal to the pressure at the inlet 110 of the valve body inner container 300, the larger the contact area is, the smaller the thrust is, the contact area inside the cavity 500 is increased, and the sensitivity of the valve body 100 is increased.
In some embodiments of the present application, as shown in fig. 2, a buffer portion 600 is further disposed inside the valve body 100, the buffer portion 600 is a flow guiding structure having a small cross-sectional area at one end and a large cross-sectional area at the other end, and a through hole is further disposed in a direction penetrating through the two cross-sections.
The buffer 600 is provided at one end of the structure 130 close to the outlet 120, the end of the buffer 600 having a large cross-sectional area is attached to the valve body liner 300, and the through hole of the buffer 600 is provided in line with the hollow portion 311 of the valve body liner 300 so as to penetrate the through hole through the hollow portion 311.
When the medium enters the hollow portion 311 from the outlet 120 of the valve body 100, the bore diameter is rapidly reduced, which may cause a vortex to be generated, and wear the edge of the hollow portion 311, thereby generating bubbles in the medium, so the buffer portion 600 is provided outside the hollow portion 311, which plays a role in guiding the medium, and prevents the medium from generating a vortex when entering the hollow portion 311, thereby causing wear to the valve body inner container 300, and generating bubbles in the medium.
In some embodiments of the present application, as shown in fig. 2, a valve seat 700 is further disposed inside the valve body 100, a sealing ring is disposed at a connection position of the valve seat 700 and the valve body 100, the valve seat 700 is disposed inside the inlet 110 of the valve body 100 and is in fit connection with a surface inside the valve body 100, and when the valve element 200 slides to the inlet 110, the valve seat 700 and the valve element 200 are in sealed connection.
It should be noted that, when the pressure in the cavity 500 pushes the valve element 200 to move toward the inlet 110 of the valve body 100, the valve seat 700 is disposed at the inlet 110 of the valve body 100, so that the valve element 200 is tightly attached to the valve seat 700, and a medium cannot enter the valve body 100, thereby closing the valve body 100.
In some embodiments of the present application, as shown in fig. 2, a spring 501 is further disposed inside a cavity 500 formed by the valve body liner 300 and the valve core 200, the spring 501 is sleeved on a shaft after the shaft body 310 and the insertion shaft 210 are connected, and the spring 501 is in a compressed state, when the valve body liner 300 and the valve core 200 move relatively, the spring 501 generates a corresponding elastic force inside, so as to push the valve core 200 toward the inlet 110.
It should be noted that, when a pressure difference is generated between the inside of the cavity 500 and the valve body 100, the valve core 200 slides, so as to realize the opening and closing of the energy-saving multifunctional pressure-stabilizing pressure-maintaining axial-flow check valve, therefore, the spring 501 in a compressed state is arranged outside the shaft body 310 and the insertion shaft 210, and under the condition that the valve body inner container 300 cannot move, the elastic force of the spring 501 is the same as the direction of the thrust in the cavity 500, and acts together, so that the effect of the thrust in the cavity 500 is increased, the sensitivity of the valve body 100 is increased, and when the pressure difference between the inside and the outside of the cavity 500 is small, the effect of opening and closing the check valve can also be generated, and the.
In some embodiments of the present application, as shown in fig. 2, the pilot valve 400 is disposed outside the valve body 100, and a first flow guide pipe, a second flow guide pipe 402 and a third flow guide pipe 403 are further disposed outside the valve body 100 for communicating media and guiding the media at different pressures.
The pilot valve 400 may change a path through which the medium flows according to the pressure of the medium, and when the pressure is less than a set value, the pilot valve 400 is closed, and the medium enters the pilot valve from the second inlet 110 and flows out of the pilot valve 400 from the second outlet 120; when the pressure is greater than the set value, the pilot valve opens and media enters the pilot valve 400 from the first inlet 110 and exits the pilot valve from the first outlet 120.
One end of the first flow guide pipe and one end of the third flow guide pipe 403 use a joint, the joint is connected with the first passage 101, the other end of the first flow guide pipe is connected with the first inlet 110 of the pilot valve 400, the other end of the third flow guide pipe 403 is connected to the second inlet 110 of the pilot valve 400, the first outlet 120 of the pilot valve 400 is connected with one end of the second flow guide pipe 402, the second outlet 120 of the pilot valve 400 is connected with the second passage 102, one end of the second flow guide pipe 402 is connected with the first outlet 120 of the pilot valve 400, and the other end is connected with the third passage 103.
A filter 404 is further provided before the third flow conduit 403 and the second inlet 110 of the pilot valve 400 for filtering bubbles and impurities in the medium.
It should be noted that, the pilot valve 400 is provided with a core, when the pressure of the medium is smaller than the set value, the core is at the passage of the first inlet 110 and the first outlet 120, and the medium flows from the second inlet 110 to the second outlet 120; when the medium pressure is greater than the set value, the core is at the passage of the second inlet 110 and the second outlet 120, and the medium flows from the first inlet 110 through the first outlet 120.
In some embodiments of the present application, the range of the pilot valve 400 setting value a is: a is more than or equal to nMPa and less than or equal to 2.5 nMPa; furthermore, the range of the set value a is more than or equal to 0.07MPa and less than or equal to 1.55 MPa.
In some embodiments of the present application, a control method of the energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve is as follows:
when the pressure at the front end of the check valve is smaller than a set value a, a medium enters the third guide pipe 403 through the first passage 101 at the inlet 110 and further enters the cavity 500 through the pilot valve 400 and the second passage 102, the pressure of the medium in the cavity 500 and the elastic force of the spring 501 push the valve core 200 to slide in the direction of the inlet 110 and slide to the position of the valve seat 700, the valve core 200 is in sealing fit with the valve seat 700, and the check valve is closed;
when the front end pressure of the check valve is above a set value a, a medium enters a first flow guide pipe through a first passage 101 at the inlet 110, when the medium in the first flow guide pipe passes through the pilot valve 400, the pilot valve 400 is opened to be communicated with a second flow guide pipe 402, the medium enters an outlet 120 position of the valve body 100 through the second flow guide pipe 402 and a third passage 103, the valve core 200 slides towards the outlet 120, and the check valve is opened.
The working principle of the energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve in the application is as follows:
when the pressure of the check valve inlet 110 is lower than a set value, a medium passes through the third flow guide pipe 403 and the filter 404, enters the cavity 500 formed by the valve body liner 300 and the valve core 200 together through the pilot valve 400, the second passage 102 and the communicating part, at the moment, the pressure of the cavity 500 is the same as the pressure of the check valve inlet 110, the area of the inner surface of the valve core 200 subjected to the pressure of the cavity 500 is larger than the area of the outer surface subjected to the pressure before the valve, the thrust of the control cavity is larger than the thrust before the valve, and meanwhile, under the combined action of the acting force of the spring 501, the sealing surface; when the pressure of the check valve inlet 110 exceeds, the medium pushes the core body in the pilot valve 400 to move right through the first guide pipe, the pilot valve 400 is opened, the control cavity 500 is the same as the outlet 120 of the valve body 100 through the second guide pipe 402, the cavity thrust and the acting force of the spring 501 are less than the valve forward thrust, the valve forward thrust pushes the valve core 200 to move towards the direction of the check valve outlet 120, and the check valve is opened.
According to the first concept of the application, the structure of the check valve is improved, the check valve comprises a valve body, a valve core, a valve body inner container and a pilot valve, the valve core and the valve body inner container are arranged inside the valve body, the pilot valve is arranged outside the valve body, cavities are formed inside the valve core and the valve body inner container and can move relatively, when the pressure intensity of an inlet of the valve body is smaller than a set value, the pressure inside the cavities pushes the valve core to move towards the inlet, the valve core is attached to the valve body in a sealing mode, and the check valve is closed; when the pressure of the inlet of the check valve is above a set value, when a medium passes through the pilot valve, the pilot valve is opened, the medium flows in from the outlet of the check valve, the pressure of the medium at the inlet pushes the valve core to move towards the outlet, the check valve is opened, the valve core is driven to do bidirectional sliding respectively according to the pressure of the medium, the opening or closing of the check valve is controlled, the effect of controlling the pressure of the medium is achieved, the medium is driven by the medium, the energy consumption is saved, and self-adjustment without external control is achieved.
According to the second concept of the application, the connection between the valve core and the valve body inner container is improved, the valve core is connected with the shaft body of the valve body inner container through the arranged inserting shaft, the relative sliding between the valve core and the valve body inner container is realized, after a medium enters the cavity, thrust can be generated on the valve core according to different pressures, the inserting shaft and the shaft body are used for arranging, the stability of the relative sliding is improved, the contact area between the medium and the valve core is increased, after the medium enters the cavity, the contact area is larger because the pressure inside the cavity is equal to the pressure at the inlet of the valve body inner container, the thrust is smaller, the contact area in the cavity is increased, and the sensitivity of the valve body is increased.
According to the third concept of the application, the buffering part is arranged in the valve body, when a medium enters the hollow part from the outlet of the valve body, the caliber is sharply reduced, a vortex is generated, the edge of the hollow part is abraded, and bubbles are generated in the medium.
According to the fourth design of this application, be provided with the disk seat in the valve body, when pressure pushed away the case and moved to the valve body entry direction in the cavity, through set up the disk seat at the valve body entrance, made the airtight laminating of case and disk seat, the medium can't enter into the valve body, realizes closing of valve body, has increased sealed effect through the disk seat that sets up the sealing washer.
According to the fifth concept of the present application, a spring is disposed in the cavity, when the pressure difference is generated between the inside of the cavity and the valve body, the valve core will slide, thereby realizing the opening and closing of the energy-saving multifunctional pressure-stabilizing pressure-holding axial flow type check valve, therefore, a compression spring is disposed outside the shaft body and the insertion shaft, under the condition that the valve body inner container cannot move, the elastic force of the spring is the same as the direction of the thrust in the cavity, the combined action is achieved, the effect of the thrust in the cavity is increased, the sensitivity of the valve body is increased, when the pressure difference between the inside and the outside of the cavity is small, the effect of opening and closing the check valve can also be generated, and the self.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an energy-saving multi-functional steady voltage holds pressure formula axial-flow type check valve which characterized in that includes: the valve comprises a valve body, a valve core, a valve body inner container and a pilot valve; the valve body liner is sleeved inside the valve body; the opening of the valve core and the opening of the valve body liner are oppositely sleeved, so that the outer surface of the valve core is attached to the inner surface of the valve body liner, the valve core and the valve body liner can move relatively, and a cavity is formed between the valve core and the valve body liner; the pilot valve is communicated with the cavity and the interior of the valve body.
2. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve as claimed in claim 1, wherein the valve body inner container is internally provided with a shaft body of a hollow part, and the hollow part extends from the free end of the shaft body to the outside of the valve body inner container; the valve core is internally provided with an inserting shaft, when the valve core and the valve body liner are sleeved, the inserting shaft is inserted into the hollow part, and the inserting shaft can slide in the hollow part.
3. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve according to claim 1, wherein the valve body comprises an inlet, an outlet and a structural part, the inlet and the outlet being respectively disposed at both ends of the valve body; the structure part is arranged in the valve body and is used for being sleeved and connected with the valve core; the inlet, the structural part and the outlet are internally communicated.
4. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve according to claim 3, further comprising:
the valve seat is arranged at the inlet, and the joint is arranged inside the inlet.
5. The energy-saving multi-functional pressure-stabilizing pressure-sustaining axial flow check valve according to claim 3, wherein said valve body further comprises a first passage, a second passage and a third passage; the first passage is arranged at the inlet and is used for communicating the inner side of the inlet with the outer part of the valve body; the second passage is provided at the structural portion for communicating an inside of the structural portion with an outside of the valve body; the third passage is provided at the outlet for communicating the inside of the outlet with the outside of the valve body.
6. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial-flow check valve of claim 1, further comprising a first flow guide tube, a second flow guide tube and a third flow guide tube; one end of the first flow guide pipe is connected with the first passage, and the other end of the first flow guide pipe is connected with the first inlet of the pilot valve; one end of the second flow guide pipe is connected with a third passage, and the other end of the second flow guide pipe is connected with the first outlet of the pilot valve; a second outlet of the pilot valve is connected with a second passage; one end of the third flow guide pipe is connected to the first passage, and the other end of the third flow guide pipe is connected to the second inlet of the pilot valve.
7. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve according to claim 1, further comprising:
the buffer part is provided with a through hole, and the through hole is communicated with the hollow part of the valve body inner container.
The spring is arranged on the outer sides of the shaft body and the inserting shaft and used for providing thrust for the movement of the valve core.
8. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve as claimed in claim 1, wherein the check valve is self-driven to close when the front end pressure is less than a set value a; when the front end pressure of the check valve is higher than a set value a, the check valve is driven to open by itself.
9. The energy-saving multifunctional pressure-stabilizing pressure-maintaining axial flow check valve according to claim 8, wherein the range of the set value a is as follows: a is more than or equal to nMPa and less than or equal to 2.5 nMPa.
10. The energy-saving multifunctional pressure-stabilizing and pressure-maintaining axial flow check valve as claimed in any one of claims 1 to 9, the control method of the energy-saving multifunctional pressure-stabilizing and pressure-maintaining axial flow check valve is:
when the pressure of the front end of the check valve is smaller than the set value a, a medium enters the third flow guide pipe through the first passage at the inlet and further enters the cavity through the pilot valve and the second passage, the pressure of the medium in the cavity and the elastic force of the spring push the valve core to slide towards the inlet direction and slide to the valve seat, the valve core is in sealing fit with the valve seat, and the check valve is closed;
when the pressure of the front end of the check valve is above the set value a, a medium enters the first flow guide pipe through the first passage at the inlet, when the medium in the first flow guide pipe passes through the pilot valve, the pilot valve is opened and communicated with the second flow guide pipe, the medium enters the outlet position of the valve body through the second flow guide pipe and the third passage, the valve core slides towards the outlet direction, and the check valve is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305904.5A CN112984169A (en) | 2021-03-23 | 2021-03-23 | Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305904.5A CN112984169A (en) | 2021-03-23 | 2021-03-23 | Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112984169A true CN112984169A (en) | 2021-06-18 |
Family
ID=76332993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305904.5A Pending CN112984169A (en) | 2021-03-23 | 2021-03-23 | Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112984169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123320A (en) * | 2023-01-05 | 2023-05-16 | 良工阀门集团有限公司 | Multifunctional low-torque axial flow valve with cut-off and check functions |
-
2021
- 2021-03-23 CN CN202110305904.5A patent/CN112984169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123320A (en) * | 2023-01-05 | 2023-05-16 | 良工阀门集团有限公司 | Multifunctional low-torque axial flow valve with cut-off and check functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112984169A (en) | Energy-saving multifunctional pressure-stabilizing and pressure-holding axial flow check valve | |
| WO2013159509A1 (en) | Thermal expansion valve with one-way control function | |
| WO2022143937A1 (en) | Constant-flow throttling and unloading multi-purpose valve | |
| US10578065B1 (en) | Two-stage intake and two-stage discharge structure of electrically controlled proportional valve | |
| US20200011452A1 (en) | Electrically-driven flow rate control valve | |
| CN110836270A (en) | Electronic expansion valve | |
| CN209876113U (en) | Pilot valve, pilot valve assembly and pressure control system | |
| CN210859941U (en) | High-pressure reducing valve | |
| CN210770421U (en) | Flow control valve with servo regulation capacity | |
| CN113685388B (en) | Water-based proportional pressure-reducing overflow valve | |
| CN215257891U (en) | Electronic expansion valve | |
| CN107676519B (en) | Axial-flow type water control regulating valve | |
| CN107076151A (en) | Screw compressor | |
| CN2227220Y (en) | Sac type hydraulic buffer | |
| JP5683189B2 (en) | Motorized valve | |
| CN110486512B (en) | Safety valve | |
| JP4503471B2 (en) | Expansion valve with integrated solenoid valve | |
| CN107806524B (en) | Axial-flow type water control pressure reducing valve | |
| CN218670649U (en) | Valve body of proportional valve, proportional valve and gas equipment | |
| CN113062823A (en) | Flow regulating device and common rail system | |
| CN217502698U (en) | High stability check valve | |
| JP3416054B2 (en) | Emergency shut-off valve | |
| CN217735873U (en) | High-response hydraulic actuator driven by electro-hydraulic servo valve | |
| CN216789271U (en) | Two-way electronic expansion valve | |
| CN216044691U (en) | Water-based proportional pressure-reducing overflow valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |