CN116379178A - Adjustable flow state constant temperature air valve - Google Patents

Adjustable flow state constant temperature air valve Download PDF

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Publication number
CN116379178A
CN116379178A CN202310497358.9A CN202310497358A CN116379178A CN 116379178 A CN116379178 A CN 116379178A CN 202310497358 A CN202310497358 A CN 202310497358A CN 116379178 A CN116379178 A CN 116379178A
Authority
CN
China
Prior art keywords
valve
core
outlet
valve core
wall
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
Application number
CN202310497358.9A
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Chinese (zh)
Inventor
高广宇
唐兴成
李来彬
王俊雅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idc Plumbing & Heating Technology Beijing Co ltd
Original Assignee
Idc Plumbing & Heating Technology Beijing Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Idc Plumbing & Heating Technology Beijing Co ltd filed Critical Idc Plumbing & Heating Technology Beijing Co ltd
Priority to CN202310497358.9A priority Critical patent/CN116379178A/en
Publication of CN116379178A publication Critical patent/CN116379178A/en
Pending legal-status Critical Current

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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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0407—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/48—Attaching valve members to screw-spindles
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • 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
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0442—Spindles and actuating means
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

The invention relates to an adjustable flow state constant temperature air valve, which is characterized in that a medium inlet and a medium outlet are arranged on a valve body, a valve seat support which is horizontally arranged is arranged in the valve body, a valve cavity in the valve body is divided into an upper cavity and a lower cavity, the valve seat support is provided with a central through hole which is used for communicating the upper cavity and the lower cavity, the lower cavity is communicated with the medium inlet, the upper cavity is communicated with the medium outlet, a valve core component which is used for adjusting the medium flow of the valve is arranged in the upper cavity, a dynamic adjusting core with resistance changing along with the pressure difference is arranged in the lower cavity, the dynamic adjusting core is provided with an adjusting core inlet and an adjusting core outlet, and a medium channel which is used for communicating the adjusting core inlet and the adjusting core outlet, and the adjusting core inlet is communicated with the lower cavity, and the adjusting core outlet is communicated with the central through hole. The invention not only can regulate the medium flow of the valve, but also can basically keep the medium flow stable under the condition that the pressure difference of the inlet and outlet ends of the valve changes.

Description

Adjustable flow state constant temperature air valve
Technical Field
The invention relates to a constant-temperature air valve capable of adjusting flow state, belonging to the technical field of valves.
Background
The traditional heating valve comprises a valve body, a valve cavity communicated with an inlet and an outlet at two ends is arranged in the valve body, a valve seat is arranged in the valve cavity, a valve seat is generally horizontally arranged, a central through hole is formed in a necessary part of a medium channel, a valve clack is arranged above the valve seat, a valve sealing pair is formed by the valve clack and the valve seat, the valve clack is connected with a valve rod and driven by the valve rod to move up and down so as to realize opening and closing of the valve and adjust the opening degree of the valve, the valve clack is generally formed by a hard valve clack seat and a rubber sealing gasket embedded on the valve clack seat or is only formed by the rubber sealing gasket, after the rubber sealing gasket is contacted with and tightly pressed against a sealing surface of the valve seat, when the rubber sealing gasket is far away from the valve seat, a medium can pass through a gap between the valve seat and the rubber sealing gasket, the opening degree of the valve is reflected by the gap between the sealing surface of the valve seat and the rubber sealing gasket, and the flow rate of the valve is influenced.
The valve is used for each heating medium pipeline of the heating system, the flow rate can be regulated by adjusting the valve opening, the flow rate in the heating medium pipeline where the valve is positioned is basically constant by setting the valve opening (when the pressure difference at the two ends of the valve inlet and outlet is not changed), and then the room or the room temperature where each heating medium pipeline is led to is basically consistent (the valve opening on the heating medium pipeline positioned at the front end of the heating system can be set smaller than the valve opening on the heating medium pipeline positioned at the rear end of the heating system). However, the medium flow is not only changed along with the change of the valve opening, but also influenced by the medium pressure or the pressure difference at the two ends of the inlet and the outlet of the valve, when the pressure at the inlet end of the valve is increased, the flow of the valve is increased under the same valve opening, and when the pressure at the inlet end of the valve is reduced, the flow of the valve is reduced under the same valve opening, and the flow is particularly reduced in a heating system, so that the heating amount is changed.
In addition, the valve rod drives the valve clack to move up and down to realize the opening, closing and opening adjustment of the valve, and in the opening, closing and opening adjustment process of the valve, the valve rod needs to move axially and rotate relative to the valve body (simultaneously in two movement modes), so that the sealing requirement of the valve rod on the valve body and the process processing requirement of related parts are very high, and in practical application, related sealing elements are very easy to fail or damage due to frequent movement of the valve rod relative to the valve body, so that the valve is leaked or fails.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the adjustable dynamic constant-temperature air valve which not only can adjust the medium flow of the valve, but also can basically keep the medium flow stable under the condition that the pressure difference at the inlet end and the outlet end of the valve changes.
The technical scheme for achieving the aim of the invention is as follows: the adjustable flow state constant temperature air valve comprises a valve body, wherein a medium inlet (or inlet cavity) and a medium outlet (or outlet cavity) are arranged on the valve body, a valve seat support is arranged in the valve body, the valve seat support is horizontally arranged and divides a valve cavity in the valve body into an upper cavity and a lower cavity, the valve seat support is provided with a central through hole for communicating the upper cavity with the lower cavity, the lower cavity is communicated with the medium inlet, a valve core and a valve core jacket are arranged in the upper cavity, the valve core jacket is fixedly and hermetically connected with the inner wall of the upper cavity, an annular gap is reserved between the outer wall of the lower part of the valve core jacket and the inner wall of the upper cavity, the annular gap is communicated with the medium outlet, the bottom end of the valve core jacket is hermetically connected with the valve seat support, the valve core jacket is provided with a valve core jacket outlet communicated with the annular gap, the valve core is coaxially arranged in the valve core outer sleeve and is in rotary sealing fit with the valve core outer sleeve, the bottom end of the valve core is sealed with the valve seat support, a valve core cavity communicated with the central through hole is arranged at the bottom of the valve core, a valve core outlet used for communicating the valve core cavity with the valve core outer sleeve outlet is arranged on the valve core, the upper width and the lower width of the valve core outlet are gradually changed along the circumferential direction of the valve core, an adjusting piece connected with the valve core is arranged at the top end in the valve core outer sleeve and is in rotary fit with the inner wall of the valve core outer sleeve, a dynamic adjusting core with resistance changing along with pressure difference is arranged in the lower cavity, the dynamic adjusting core is provided with an adjusting core inlet and an adjusting core outlet and a medium channel communicated with the adjusting core inlet and the adjusting core outlet, the adjusting core inlet is communicated with the lower cavity, the regulating core outlet is communicated with the central through hole.
Preferably, the dynamic adjusting core comprises a cylindrical shell, the shell is provided with a top cover, the shell is fixedly connected in the lower cavity and sealed with the valve seat support, an inlet of the adjusting core is arranged on the side wall of the shell, an outlet of the adjusting core is arranged on the top cover, the top cover forms a valve seat, a floating cylinder capable of moving up and down is arranged in the shell, the height of the floating cylinder is smaller than that of the shell, and a gap is reserved between the outer wall of the floating cylinder and the inner wall of the shell.
Preferably, the bottom end of the floating cylinder is closed, the top end of the floating cylinder is open, a floating cylinder inlet is formed in the side wall of the floating cylinder, a spiral spring and a spring top cap are arranged in the floating cylinder, the bottom end of the spiral spring is propped against or fixedly connected with the bottom wall in the floating cylinder, the top end of the spiral spring is propped against or fixedly connected with the spring top cap, and a gap is reserved between the side wall (refer to the radial outer edge of the spring top cap) of the spring top cap and the inner wall of the floating cylinder.
Preferably, the number of the floating cylinder inlets is a plurality, and the plurality of the floating cylinder inlets are uniformly distributed on the side wall of the floating cylinder along the circumferential direction.
Preferably, protrusions which extend outwards and are matched with the inner diameter of the spiral spring are arranged on the bottom wall in the floating cylinder body and the bottom wall of the spring top cap, two ends of the spiral spring are respectively sleeved on the protrusions on the corresponding sides, and the protrusions can be cylindrical or frustum-shaped.
Preferably, a guide hole is formed in the top wall of the spring top cap, the guide hole is a blind hole (a hole which does not penetrate through the spring top cap), a guide column extending downwards is arranged in the center of the top cap, and the guide column is inserted into the guide hole.
Preferably, the outlet of the adjusting core is a circular opening and is positioned in the center of the top cover, and the caliber of the outlet of the adjusting core is not smaller than the outer diameter of the floating cylinder.
A bracket can be arranged in the outlet of the adjusting core, the guide post is fixed on the bracket, and the bracket can be a cross bracket.
Preferably, an annular flange protruding radially outwards is arranged on the outer wall of the bottom end of the floating cylinder, a gap is reserved between the outer edge of the annular flange and the inner wall of the shell, the gap between the outer edge of the annular flange and the inner wall of the shell is smaller than the gap between the outer wall of the main body of the floating cylinder and the inner wall of the shell, and the gap between the outer edge of the annular flange and the inner wall of the shell is a tiny gap, and is usually not more than 0.5cm.
Preferably, the top cover is provided with a boss extending downwards and inserted into the shell, the boss is cylindrical, the outer wall of the boss is in sealing fit with the inner wall of the shell, the inner wall of the boss is a conical surface with gradually expanding inner diameter from top to bottom, the minimum inner diameter of the boss is not smaller than the outer diameter of the floating barrel, and when the bottom wall of the floating barrel is in contact with the bottom wall in the shell (namely, the floating barrel is positioned at the lowest part in the shell), the top end of the floating barrel is positioned above the bottom end of the boss.
Preferably, the top of the shell and the top of the top cover are both provided with flanges protruding radially outwards, the assembly mode of the shell and the top cover in the lower cavity is that the shell is inserted into the lower cavity from the upper cavity, the flanges of the top of the shell are lapped on the top surface of the valve seat support, the bosses of the top cover are inserted into the shell from top to bottom, the flanges of the top cover are lapped on the top surface of the flanges of the top of the shell, or are lapped on the valve seat support, or are lapped on the top surface of the flanges of the top of the shell, the bottom ends of the valve core sleeve and the valve core are propped on the top surface of the flanges of the top cover, and the valve seat support is provided with a rabbet or a step surface suitable for the lap joint of the flanges of the top of the shell. The valve seat (the top cover) and the valve seat support may be provided as an integral structure.
Preferably, the valve core outer sleeve outlet is a rectangular opening, the position of the valve core outer sleeve outlet transversely corresponds to (or horizontally corresponds to) the position of the annular gap, and the upper and lower width of the valve core outer sleeve outlet is not greater than (preferably smaller than) the upper and lower width of the annular gap. The valve core outlet is transversely corresponding to the position of the valve core outer sleeve outlet (or horizontally corresponding to the position of the valve core outer sleeve outlet), and the maximum up-down width of the valve core outlet is smaller than the up-down width of the valve core outer sleeve outlet.
The lowest point of the lower edge of the valve core outlet is flush with the lower edge of the valve core outer sleeve outlet, or the highest point of the upper edge of the valve core outlet is flush with the upper edge of the valve core outer sleeve outlet, or the highest point of the upper edge of the valve core outlet is lower than the upper edge of the valve core outer sleeve outlet, and the lowest point of the lower edge of the valve core outlet is higher than the lower edge of the valve core outer sleeve outlet.
The upper and lower width of the valve core outlet can be changed linearly, namely, the upper and lower edges of the valve core outlet are inclined straight edges or arc edges, or the upper and lower edges of the valve core outlet are the combination of the inclined straight edges or arc edges and the straight edges, the upper and lower width of the valve core outlet can also be changed stepwise, namely, the upper and lower edges of the valve core outlet are stepped edges, or the upper and lower edges of the valve core outlet are the combination of the stepped edges and the inclined straight edges or arc edges.
Preferably, the maximum flow area of the valve core outlet communicated with the valve core outer sleeve outlet is smaller than the flow area of the regulating core outlet communicated with the valve core cavity.
Preferably, a valve clack is arranged in the valve core cavity, the valve clack is arranged at the lower end of the valve rod, the valve core is provided with a shaft hole, the valve rod is coaxially positioned in the shaft hole of the valve core, the top end of the valve rod is positioned outside the valve body (upwards extends out of the valve body), and the valve clack and the valve seat (referred to as the top cover) form a main sealing pair (opening and closing sealing pair) of the valve.
The valve clack can be composed of a hard valve clack seat and a rubber sealing gasket embedded on the valve clack seat, and also can be composed of the rubber sealing gasket only. The valve clack and the regulating core outlet on the top cover form a sealing pair for opening and closing the valve, so that the valve clack and the regulating core outlet can be conveniently sealed, and the top wall of the top cover can be provided with a conical surface with a gradually-reduced inner diameter from top to bottom.
Preferably, the valve rod is sleeved with a spring, the spring is located in the shaft hole of the valve core, an annular flange extending inwards is arranged at the bottom end of the shaft hole of the valve core, the valve rod is in sliding sealing fit with the inner wall of the annular flange, a clamp spring (or a check ring) is fixedly arranged in the middle of the valve rod, the bottom end of the spring abuts against the annular flange, and the top end of the spring abuts against the clamp spring.
Preferably, a radial inward annular groove is formed in the middle of the valve rod, the clamp spring is horizontally embedded in the annular groove, and the outer edge of the clamp spring protrudes out of the outer wall of the valve rod.
Preferably, a cylindrical spring sleeve and a compression cap are arranged in the shaft hole of the valve core, the compression cap is positioned above the spring sleeve, the spring and the clamp spring are positioned in the spring sleeve, an inward protruding annular flange is arranged at the top end of the spring sleeve, the bottom end of the spring sleeve is propped against the inward protruding annular flange at the bottom end of the shaft hole of the valve core, the compression cap is fixedly connected (for example, in threaded connection) with the top end in the shaft hole of the valve core, the bottom end of the compression cap is propped against the spring sleeve, and a gap is reserved between the top end of the compression cap and the adjusting piece.
Preferably, the regulating element is in an inverted cup shape, the regulating element and the valve core can be connected in a threaded connection mode or in a clamping connection mode, for example, an inward protruding flange (usually an annular flange) is arranged at the bottom end of the regulating element, a groove (usually an annular groove) matched with the flange is formed in the top end of the valve core, the flange on the regulating element is clamped in the groove on the valve core, a plurality of inward protruding protrusions are distributed on the inner wall of the regulating element at intervals along the circumferential direction, clamping grooves matched with the number and the positions of the protrusions are formed in the top end of the valve core, and the protrusions on the regulating element are respectively clamped in the corresponding clamping grooves.
Preferably, the top end of the adjusting member is located outside the valve body.
Preferably, the top of valve body is equipped with the helmet, the helmet is the back cup, the helmet with valve body threaded connection, the top of valve rod supports on the roof in the helmet, be equipped with matched with joint structure on the top outer wall of helmet with be equipped with on the regulating part.
Preferably, a circular groove is formed in the center of the outer wall of the top end of the protective cap, a plurality of protrusions protruding inwards are arranged on the groove wall of the circular groove along the circumferential direction, clamping grooves corresponding to the protrusions in number and positions are formed in the axial outer wall of the adjusting piece, when the protective cap is unscrewed from the valve body, the protective cap can be inverted, the protrusions on the protective cap are clamped in the corresponding clamping grooves on the adjusting piece, and the valve core can be driven to rotate in the valve core jacket through the adjusting piece.
The center of the circular groove may be provided with a blind hole into which the tip of the valve rod is inserted. The top wall in the protective cap can also be provided with a blind hole for inserting the top end of the valve rod.
The side wall of the protective cap can be provided with flow scales along the circumferential direction, when the protective cap is inverted and is matched and clamped with the regulating piece, the flow scales correspond to different upper and lower width positions of the valve core outlet, and the corresponding relation between the flow scales and the different upper and lower width positions of the valve core outlet can be ensured after the protective cap is clamped and matched with the regulating piece by arranging the protrusions (corresponding clamping grooves) on the protective cap into different widths or arranging the adjacent protrusions (corresponding clamping grooves) into different intervals and the like.
The temperature bulb can be fixedly arranged in the protective cap, and when the protective cap is positively arranged on the valve body, the top end of the valve rod is propped against the temperature bulb.
The beneficial effects of the invention are as follows:
(1) Because the dynamic adjusting core is arranged in the lower cavity, when the pressure difference between the medium inlet and the medium outlet of the valve is increased, the pressure of the medium flowing into the lower part of the floating cylinder through the gap between the shell of the dynamic adjusting core and the floating cylinder is relatively increased, the floating cylinder is pushed to float in the shell of the dynamic adjusting core (the spiral spring is compressed while floating upwards), so that the overflow area between the floating cylinder and the adjusting core outlet is reduced, the medium flow is reduced, when the pressure difference between the medium inlet and the medium outlet of the valve is reduced, the pressure of the medium flowing into the lower part of the floating cylinder is relatively reduced, the overflow area between the floating cylinder and the adjusting core outlet is increased under the downward thrust action and the gravity action of the spiral spring, the medium flow is increased, the change of the medium flow or the heating quantity caused by the pressure difference between the medium inlet and the medium outlet of the valve is basically avoided, the stability of the medium flow is favorably maintained, and the error range of the medium flow can be controlled within 5 percent of the constant temperature. The pressure in the front end pipeline is usually larger, the pressure in the rear end pipeline is usually smaller, the floating cylinder in the valve on the front end pipeline floats upwards, the medium flow is reduced, the floating cylinder in the valve on the rear end pipeline sinks, the medium flow is increased, the opening degree (set flow) is set by matching with the valve on each pipeline, the heating amount of rooms or houses led by each pipeline can be ensured to be basically consistent, and the room temperature of the rooms or houses led by each pipeline is ensured to be basically consistent.
(2) Because the valve core is rotated to change the flow area communicated between the valve core outlet and the valve core outer sleeve outlet to regulate the flow of the valve, and the flow area communicated between the valve core outlet and the valve core outer sleeve outlet is a plane (equivalent to a plane), compared with a traditional heating valve, the flow regulation of the valve is more accurate by regulating the flow of the valve (the flow area is an annulus) by changing the distance between the valve clack and the valve seat.
(3) Because the opening and closing of the valve and the flow regulation are controlled by different parts respectively (the opening and closing of the valve is controlled by a valve rod, the flow regulation is controlled by a valve core), and when the opening and closing of the valve and the flow regulation are controlled, the related parts only do single movement (the valve rod only do axial movement when the valve is opened and closed and the valve core only rotates relative to the valve core jacket when the flow is regulated), compared with the traditional heating valve, the valve rod does axial movement and rotation (simultaneously performs two movements) when the opening and the closing of the heating valve and the flow regulation are performed, the movement form of the related parts is single, the leakage or the failure is difficult to occur, the service life of the valve can be effectively prolonged, the sealing requirements and the technological processing requirements for the related parts can be properly reduced, and the production cost is reduced.
(4) Because the inside and outside structure of helmet sets up, when the helmet is just adorning on the valve body (threaded connection is in on the valve body) can realize opening and close of valve, when the helmet is adorned conversely on the regulating part (joint is in on the regulating part) can realize the flow control of valve, the convenience is to the use and the control of valve.
Drawings
FIG. 1 is a schematic view of the construction of one mode of operation of the invention (the cap being mounted on the valve body);
FIG. 2 is a schematic view of another mode of operation of the invention (the helmet is reversed on the adjustment member);
FIG. 3 is an assembled schematic view (exploded view) of the present invention;
FIG. 4 is a schematic structural view of the valve core housing of the present invention;
FIG. 5 is a schematic view of the structure of the valve cartridge of the present invention;
FIG. 6 is a schematic structural view of the dynamically adjusting core of the present invention;
fig. 7 is a schematic view (exploded view) of the assembly of the dynamically adjusting core of the present invention.
Description of the embodiments
All directional indicators (e.g., up, down, top, bottom, inner, outer, etc.) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a certain specific posture (as shown in the drawings), and do not constitute limitations on the actual use direction, and if the specific posture is changed, the directional indicators are correspondingly changed.
Referring to fig. 1-7, the invention discloses an adjustable flow state constant temperature air valve, which comprises a valve body 1, wherein a medium inlet (or called an inlet cavity) 2 and a medium outlet (or called an outlet cavity) 3 are arranged on the valve body, a valve seat support (or called a valve seat support) 4 is arranged in the valve body, the valve seat support is horizontally arranged and divides a valve cavity in the valve body into an upper cavity and a lower cavity, the valve seat support is provided with a central through hole for communicating the upper cavity and the lower cavity, the lower cavity is communicated with the medium inlet, the upper cavity is communicated with the medium outlet, and a medium channel consisting of the medium inlet, the lower cavity, the upper cavity and the medium outlet is formed in the valve body. The upper cavity is internally provided with a valve core 5 and a valve core jacket 6 which are coaxially sleeved, the valve core jacket is fixedly and hermetically connected with the inner wall of the upper cavity (for example, in threaded connection and provided with a proper sealing ring), an annular gap (or called an annular cavity) is reserved between the outer wall of the lower part of the valve core jacket and the inner wall of the upper cavity, the annular gap is communicated with the medium outlet, the bottom end of the valve core jacket is sealed with the valve seat support, the valve core jacket is provided with a valve core jacket outlet 7 communicated with the annular gap, the valve core jacket outlet is communicated with the medium outlet through the annular gap and is used for medium to flow out of the valve body, the valve core is coaxially arranged in the valve core jacket and is in rotary sealing fit (provided with a proper sealing ring) with the valve core jacket, the valve core can coaxially rotate relative to the valve core outer sleeve, the bottom end of the valve core is sealed with the valve seat support, a valve core cavity 8 communicated with the central through hole is arranged at the bottom of the valve core, media can flow into the valve core cavity through the central through hole, a valve core outlet 9 used for communicating the valve core cavity with the valve core outer sleeve outlet is arranged on the valve core, the media entering the valve core cavity can flow into the media outlet through the communicated valve core outlet and the valve core outer sleeve outlet, finally flows out of the valve body, and the upper width and the lower width of the valve core outlet gradually change along the circumferential direction of the valve core, so that the flow passing area of the valve core outlet communicated with the valve core outer sleeve outlet can be changed when the valve core is rotated, and the flow of the valve is adjusted. The top in the case overcoat is equipped with the regulating part 10 that the case is connected, the regulating part with the normal running fit between the inner wall of case overcoat makes the regulating part can rotate for the case overcoat and drive the case rotates together, realizes the regulation to the valve flow.
The dynamic regulating core 11 with resistance (resistance to medium flow) changing along with pressure difference is arranged in the lower cavity, the dynamic regulating core is provided with a regulating core inlet, a regulating core outlet and a medium channel communicated with the regulating core inlet and the regulating core outlet, the regulating core inlet is communicated with the lower cavity (can also be directly communicated with the medium inlet), and the regulating core outlet is communicated with the central through hole, so that the medium channel of the dynamic regulating core forms a medium channel which is communicated with the medium inlet and the central through hole, when the pressure difference between the medium inlet and the medium outlet changes, the resistance of the dynamic regulating core synchronously changes reversely, the change amplitude is proper, the medium flow flowing through the dynamic regulating core can be regulated, and the stability of the medium flow is further maintained.
The dynamic adjusting core preferably comprises a cylindrical shell 12, wherein the shell is provided with a top cover 13, the shell is fixedly connected in the lower cavity and is sealed with the valve seat support, the shell can be fixedly connected on the valve seat support, a gap can be reserved between the outer wall of the shell and the cavity wall of the lower cavity, an adjusting core inlet is arranged on the side wall of the shell, the position of the adjusting core inlet is generally corresponding to the medium inlet, a medium is convenient to flow into the shell, an adjusting core outlet 14 is arranged on the top cover, the top cover forms a valve seat, a floating cylinder 15 capable of moving up and down is arranged in the shell, the height of the floating cylinder is smaller than that of the shell, so that the floating cylinder can move up and down in the shell, and a gap is reserved between the outer wall of the floating cylinder and the inner wall of the shell for medium circulation. The bottom surface of the floating cylinder body can be provided with a plurality of supporting feet which extend downwards, so that when the floating cylinder body is positioned at the bottom in the shell (when the floating cylinder body moves downwards to the lowest position), a gap is reserved between the bottom wall of the floating cylinder body and the bottom wall of the shell, and a medium can conveniently flow into the lower part of the floating cylinder body.
The bottom end of the floating cylinder is closed, the top end of the floating cylinder is open, and a floating cylinder inlet 16 is arranged on the side wall of the floating cylinder and used for allowing a medium to flow into the floating cylinder and flow out of the top end of the floating cylinder. The number of the floating cylinder inlets can be multiple, and the floating cylinder inlets are uniformly distributed on the side wall of the floating cylinder along the circumferential direction. The floating cylinder is preferably internally provided with a spiral spring 17 and a spring top cap 18, the bottom end of the spiral spring is propped against or fixedly connected with the bottom wall in the floating cylinder, the top end of the spiral spring is propped against or fixedly connected with the spring top cap, the spiral spring can be provided with or not provided with precompression according to control requirements, and when the floating cylinder moves upwards to compress the spiral spring, the spiral spring applies downward thrust to the bottom wall of the floating cylinder. A gap is reserved between the side wall of the spring top cap (which refers to the radial outer edge of the spring top cap) and the inner wall of the floating cylinder body, and the gap is used for medium circulation.
The bottom wall in the floating cylinder body and the bottom wall of the spring top cap are preferably provided with protrusions which extend outwards and are matched with the inner diameter of the spiral spring, and two ends of the spiral spring are respectively sleeved on the protrusions on the corresponding sides and used for positioning the spiral spring and preventing lateral bending. The bulge can be cylindrical or frustum-shaped.
The top wall of the spring top cap is preferably provided with a guide hole, the guide hole is a blind hole (a hole which does not penetrate through the spring top cap), correspondingly, the center of the top cap is provided with a guide column which extends downwards, and the guide column is inserted into the guide hole and used for guiding and positioning the spring top cap. When the bottom of the floating cylinder body in the shell does not move upwards, the bottom end of the guide column is propped against the hole bottom of the guide hole, or a gap is reserved between the bottom end of the guide column and the hole bottom of the guide hole.
The adjusting core outlet is preferably a circular opening and is positioned in the center of the top cover, the caliber of the adjusting core outlet is not smaller than the outer diameter of the floating cylinder, and the caliber of the adjusting core outlet is smaller than the aperture of the central through hole. A bracket can be arranged in the outlet of the adjusting core, the guide post is fixed on the bracket, and the bracket can be a cross bracket.
The bottom end outer wall of the floating cylinder is preferably provided with an annular flange protruding outwards in the radial direction, a gap is reserved between the outer edge of the annular flange and the inner wall of the shell, the gap between the outer edge of the annular flange and the inner wall of the shell is smaller than the gap between the main body outer wall of the floating cylinder and the inner wall of the shell, and the gap between the outer edge of the annular flange and the inner wall of the shell is preferably a tiny gap, and is usually not more than 0.5cm. The arrangement of the dynamic adjusting core does not influence the medium to flow into the lower part of the floating cylinder, can avoid larger shaking when the floating cylinder moves up and down in the shell of the dynamic adjusting core, and is beneficial to the stability of the up and down movement of the floating cylinder.
The top cover is preferably provided with a boss which extends downwards and is inserted into the shell, the boss is cylindrical, the outer wall of the boss is in sealing fit with the inner wall of the shell, the boss and the inner wall of the shell can be tightly adhered to each other and are provided with a proper sealing ring, the inner wall of the boss is a conical surface with gradually expanding inner diameter from top to bottom, or the middle part, the upper part or one section of the lower part of the inner wall of the boss is a conical surface with gradually expanding inner diameter from top to bottom, the minimum inner diameter of the boss is not smaller than the outer diameter of the floating barrel, and when the bottom wall of the floating barrel is in contact with the bottom wall in the shell (namely, the floating barrel is positioned at the lowest part in the shell), the top end of the floating barrel is positioned above the bottom end of the boss and below the top end of the conical surface of the inner wall of the boss. So set up, when the floating cylinder is in the casing reciprocates, owing to the existence of the conical surface on the inner wall of boss, the interval between the outer wall of floating cylinder with the inner wall of boss can change, change the outer wall of floating cylinder with overflow area between the boss helps when the pressure differential between medium import with the medium export takes place to change, adjusts the medium flow.
The top of the shell and the top of the top cover are preferably provided with flanges protruding outwards in the radial direction, the assembly mode of the shell and the top cover in the lower cavity can be that the shell is inserted into the lower cavity from the upper cavity (inserted from a central through hole in the valve seat support), the flange of the top of the shell is lapped on the top surface of the valve seat support, the boss of the top cover is inserted into the shell from top to bottom, the flange of the top cover is lapped on the top surface of the flange of the top of the shell, or is lapped on the valve seat support, or is lapped on the top surface of the flange of the top of the shell, the bottom ends of the valve core sleeve and the valve core are propped on the top surface of the flange of the top cover, and a rabbet or a step surface suitable for the lap joint of the flange of the top of the shell is arranged on the valve seat support. The dynamic adjusting core is convenient to assemble, disassemble and maintain in the valve body by adopting the assembly mode. The valve seat (the top cover) and the valve seat support may be provided as an integral structure.
The dynamic adjusting core is arranged in the lower cavity of the air heating valve, after the flow of the valve is set, when the pressure difference between the medium inlet and the medium outlet of the valve is increased, the pressure of the medium flowing into the lower part of the floating cylinder through the gap between the shell of the dynamic adjusting core and the floating cylinder is relatively increased, the floating cylinder is pushed to float in the shell of the dynamic adjusting core (the spiral spring is compressed while floating upwards), the flow area between the floating cylinder and the adjusting core outlet is reduced (the flow area between the outer wall of the floating cylinder and the boss of the top cover, the flow area between the top end of the floating cylinder and the medium outlet is reduced, and/or the flow area between the spring top cap and the medium outlet is reduced), the medium flow is reduced, and when the pressure difference between the medium inlet and the medium outlet of the valve is reduced, the pressure of the medium flowing into the lower part of the floating cylinder is relatively reduced, the floating is enabled to have the downward thrust action of the spiral spring and the downward thrust action of the spiral spring, the flow area between the floating cylinder and the medium inlet is controlled by the constant flow area between the floating cylinder and the medium outlet, the medium flow is controlled to be increased, and the medium flow is kept constant, and the flow of the medium is increased, and the medium flow is kept constant, and the flow is increased, and the flow between the medium is kept constant, and the medium flow is increased, and the medium flow is kept constant, and is increased, and the flow is kept constant, and is stable, and the flow is stable, and is stable and the flow. The pressure in the front end pipeline is usually larger, the pressure in the rear end pipeline is usually smaller, the floating cylinder in the valve on the front end pipeline floats upwards, the medium flow is reduced, the floating cylinder in the valve on the rear end pipeline sinks, the medium flow is increased, the opening degree (set flow) is set by matching with the valve on each pipeline, the heating amount of rooms or houses led by each pipeline can be ensured to be basically consistent, and the room temperature of the rooms or houses led by each pipeline is ensured to be basically consistent.
The valve core outer sleeve outlet is a rectangular opening, the valve core outer sleeve outlet transversely corresponds to the position of the annular gap (or horizontally corresponds to the position of the annular gap), and the upper and lower width of the valve core outer sleeve outlet is not larger (preferably smaller) than the upper and lower width of the annular gap. The valve core outlet is transversely corresponding (or horizontally corresponding) to the position of the valve core outer sleeve outlet, the maximum upper and lower width of the valve core outlet is preferably smaller than the upper and lower width of the valve core outer sleeve outlet, the lowest point of the lower edge of the valve core outlet is flush with the lower edge of the valve core outer sleeve outlet, or the highest point of the upper edge of the valve core outlet is flush with the upper edge of the valve core outer sleeve outlet, or the highest point of the upper edge of the valve core outlet is lower than the upper edge of the valve core outer sleeve outlet, and the lowest point of the lower edge of the valve core outlet is higher than the lower edge of the valve core outer sleeve outlet. The valve is arranged in such a way that the flow setting and adjustment of the valve completely depends on the vertical width change of the valve core outlet, so that the linear adjustment of the valve flow is realized, and the flow adjustment precision is improved.
The upper and lower width of the valve core outlet can be changed linearly, namely, the upper and lower edges of the valve core outlet are inclined straight edges or arc edges, or the upper and lower edges of the valve core outlet are the combination of the inclined straight edges or arc edges and the straight edges, the upper and lower width of the valve core outlet can also be changed stepwise, namely, the upper and lower edges of the valve core outlet are stepped edges, or the upper and lower edges of the valve core outlet are the combination of the stepped edges and the inclined straight edges or arc edges.
Because the valve core is rotated to change the flow area communicated between the valve core outlet and the valve core sleeve outlet to regulate the flow of the valve, and the flow area communicated between the valve core outlet and the valve core sleeve outlet is a plane, compared with a traditional heating valve, the flow regulation of the valve is more accurate by regulating the flow of the valve (the flow area is an annulus) by changing the distance between the valve clack and the valve seat.
The maximum flow area of the valve core outlet communicated with the valve core outer sleeve outlet is preferably smaller than the flow area of the regulating core outlet communicated with the valve core cavity, and further, the area of the valve core outer sleeve outlet is smaller than the flow area of the regulating core outlet communicated with the valve core cavity. The valve is arranged in such a way, the flow area of the outlet end of the valve core cavity is always smaller than that of the inlet end, and the valve setting flow is regulated by regulating the flow area of the outlet end of the valve core cavity (the flow area of the valve core outlet communicated with the valve core outer sleeve outlet), so that the flow regulation precision is improved.
The valve core cavity is preferably internally provided with a valve clack 19, the valve clack is arranged at the lower end of a valve rod 20, the valve core is provided with a shaft hole, the valve rod is coaxially positioned in the shaft hole of the valve core, and the top end of the valve rod is positioned outside the valve body (upwards extends out of the valve body). The valve clack can be composed of a hard valve clack seat and a rubber sealing gasket embedded on the valve clack seat, and also can be composed of the rubber sealing gasket only. The valve clack and the valve seat (an adjusting core outlet on the top cover) form a main sealing pair (an opening and closing sealing pair) of the valve, so that the valve clack and the adjusting core outlet are conveniently sealed, the top wall of the top cover can be provided with a conical surface with a gradually-reduced inner diameter from top to bottom, and the conical surface is a sealing surface of the valve seat. The valve rod moves up and down in the shaft hole of the valve core to drive the valve clack to be far away from or close to the outlet of the regulating core (the close limit position is that the valve clack is tightly sealed with the outlet of the regulating core), so that the valve can be opened and closed.
The valve rod is preferably sleeved with a spring 21, the spring is a cylindrical spring and is located in a shaft hole of the valve core, an annular flange extending inwards is arranged at the bottom end of the shaft hole of the valve core, the valve rod is in sliding sealing fit with the inner wall of the annular flange (provided with a proper sealing ring), a clamping spring (or called a check ring) 22 is fixedly arranged in the middle of the valve rod, the bottom end of the spring abuts against the annular flange (provided with a proper gasket), and the top end of the spring abuts against the clamping spring. When downward pressure is applied to the valve rod, the valve rod drives the valve clack to move downwards to seal the outlet of the regulating core (the clamp spring moves downwards along with the valve rod), the valve is closed, the clamp spring compresses the spring, when the downward pressure applied to the valve rod is removed, under the action of the thrust of the spring, the valve rod is pushed by the clamp spring to drive the valve clack to move upwards, and the valve is opened.
The middle part of the valve rod can be provided with a radial inward annular groove, the clamp spring is horizontally embedded in the annular groove, and the outer edge of the clamp spring protrudes out of the outer wall of the valve rod.
The valve is characterized in that a cylindrical spring sleeve 23 and a compression cap 24 are preferably arranged in the shaft hole of the valve core, the compression cap is positioned above the spring sleeve, the spring and the clamp spring are positioned in the spring sleeve, an inward protruding annular flange is arranged at the top end of the spring sleeve, the inner wall of the annular flange is in clearance fit or sliding fit with the valve rod, when the valve is opened, the top surface of the clamp spring is abutted to the bottom surface of the annular flange (at the moment, the spring is provided with or is not provided with precompression), when the valve is closed, a space is reserved between the top surface of the clamp spring and the bottom surface of the annular flange, the bottom end of the spring sleeve is abutted to the annular flange extending inwards from the bottom end of the shaft hole of the valve core, the bottom end of the compression cap is fixedly connected (in threaded connection) to the top end of the shaft hole of the valve core, a proper sealing ring is arranged on the spring sleeve, the top end of the compression cap is abutted to the regulating member or is in clearance fit with the valve rod, and the inner wall of the compression cap is in clearance fit or sliding fit with the valve rod. The spring sleeve and the compression cap are arranged, so that the upward moving stroke of the valve rod can be limited, the valve rod can move up and down in a set reasonable range, and the valve can be opened and closed.
The regulating element is preferably in an inverted cup shape, the regulating element and the valve core can be connected in a threaded connection mode or in a clamping connection mode, for example, an inward protruding flange (usually an annular flange) is arranged at the bottom end of the regulating element, a groove (usually an annular groove) matched with the flange is formed in the top end of the valve core, the flange on the regulating element is clamped in the groove on the valve core, a plurality of inward protruding protrusions are distributed on the inner wall of the regulating element at intervals along the circumferential direction, clamping grooves matched with the number and the positions of the protrusions are formed in the top end of the valve core, and the protrusions on the regulating element are respectively clamped in the corresponding clamping grooves. The top end of the adjusting member is preferably located outside the valve body, i.e. the top end of the adjusting member protrudes upwards out of the valve body. The valve is arranged in such a way, the adjusting piece can be rotated outside the valve body through a tool matched with the adjusting piece, the valve core is driven to rotate in the valve core jacket through the adjusting piece, the overflow area of the valve core outlet communicated with the valve core jacket outlet is changed, and the flow of the valve is adjusted. The center of the adjusting piece is provided with a through hole through which the valve rod can pass.
Because the opening and closing of the valve and the flow regulation are controlled by different parts respectively (the opening and closing of the valve is controlled by a valve rod, the flow regulation is controlled by a valve core), and when the opening and closing of the valve and the flow regulation are controlled, the related parts only do single movement (the valve rod only do axial movement when the valve is opened and closed and the valve core only rotates relative to the valve core jacket when the flow is regulated), compared with the traditional heating valve, the valve rod does axial movement and rotation (simultaneously performs two movements) when the opening and the closing of the heating valve and the flow regulation are performed, the movement form of the related parts is single, the leakage or the failure is difficult to occur, the service life of the valve can be effectively prolonged, the sealing requirements and the technological processing requirements for the related parts can be properly reduced, and the production cost is reduced.
The top of valve body is preferably equipped with the helmet 25, the helmet is the fall cup, the helmet with valve body threaded connection, the top of valve rod supports on the roof in the helmet, so set up, through rotating on the valve body the helmet can realize opening and close of valve, when rotatory the helmet makes it for the valve body moves down (normally forward rotation), the helmet promotes downwards the valve rod, and the valve is closed, when rotatory the helmet makes it for the valve body moves up (normally reverse rotation), the roof in the helmet with the interval between the top of valve body grow, the valve rod is in the thrust effect of spring is upwards moved, and the valve is opened.
The outer wall of the top end of the protective cap and the adjusting piece are preferably provided with a matched clamping structure. So set up, when will the helmet is followed after unscrewing on the valve body, can will the helmet is turned over, then with the regulating part passes through joint structure joint rotates the helmet can realize the flow control of valve, from this, works as the helmet is just adorning can realize opening and close of valve when on the valve body, works as the helmet is adorned in the time of can realizing the flow control of valve on the regulating part, the convenience is to the use and the control of valve.
A preferred implementation mode of the clamping structure can be as follows: the center on the top outer wall of the protective cap is provided with a circular groove, a plurality of inwards-protruding bulges are arranged on the groove wall of the circular groove along the circumferential direction, and clamping grooves corresponding to the bulges in number and positions are arranged on the axial outer wall of the adjusting piece. When the protective cap is unscrewed from the valve body, the protective cap is turned upside down, so that all the protrusions on the protective cap are clamped in the corresponding clamping grooves on the adjusting piece, and the valve core can be driven to rotate in the valve core outer sleeve through the adjusting piece by rotating the protective cap.
The center of the circular groove may be provided with a blind hole into which the tip of the valve rod is inserted. The top wall in the protective cap can also be provided with a blind hole for inserting the top end of the valve rod.
The side wall of the protective cap can be provided with flow scales (or flow gear scales) along the circumferential direction, when the protective cap is inverted and is matched and clamped with the regulating piece, the flow scales correspond to different upper and lower width positions of the valve core outlet, the circumferential angle of the protective cap for driving the regulating piece to rotate can be determined according to the flow scales on the protective cap, the flow of the valve is regulated, and the control is convenient. The corresponding relation between the flow scale and the position of the valve core outlet with different upper and lower widths can be ensured by arranging the protrusions (and the corresponding clamping grooves) on the protective cap with different widths or arranging the adjacent protrusions (and the corresponding clamping grooves) with different intervals and the like.
The temperature bulb can be fixedly arranged in the protective cap, when the protective cap is positively arranged on the valve body, the top end of the valve rod is propped against the temperature bulb, and the temperature bulb is arranged in such a way that when the protective cap is positively arranged on the valve body (after the protective cap is reversely arranged on the regulating piece to regulate the flow of the valve, the valve is positively arranged on the valve body in a detachable way), and the temperature bulb can control the valve rod to move up and down according to the room temperature, so that the valve can be automatically opened and closed according to the room temperature.
The preferred and optional technical means disclosed in the invention may be combined arbitrarily to form a plurality of different technical schemes, except for the specific description and the further limitation that one preferred or optional technical means is another technical means.

Claims (10)

1. The adjustable flow state constant temperature air valve comprises a valve body, wherein a medium inlet and a medium outlet are arranged on the valve body, the valve body is internally provided with a valve seat support, the valve seat support is horizontally arranged and divides a valve cavity in the valve body into an upper cavity and a lower cavity, the valve seat support is provided with a central through hole for communicating the upper cavity with the lower cavity, the lower cavity is communicated with the medium inlet, a valve core and a valve core jacket are arranged in the upper cavity, the valve core jacket is fixedly and hermetically connected with the inner wall of the upper cavity, an annular gap is reserved between the outer wall of the lower part of the valve core jacket and the inner wall of the upper cavity, the annular gap is communicated with the medium outlet, the bottom end of the valve core jacket is sealed with the valve seat support, the valve core jacket is provided with a valve core jacket outlet communicated with the annular gap, and the valve core is coaxially arranged in the valve core jacket, the valve core is matched with the valve core jacket in a rotating and sealing way, the bottom end of the valve core is sealed with the valve seat support, the bottom of the valve core is provided with a valve core cavity communicated with the central through hole, the valve core is provided with a valve core outlet used for communicating the valve core cavity with the valve core jacket outlet, the upper width and the lower width of the valve core outlet gradually change along the circumferential direction of the valve core, the top end in the valve core jacket is provided with an adjusting piece connected with the valve core, the adjusting piece is matched with the inner wall of the valve core jacket in a rotating way, the lower cavity is internally provided with a dynamic adjusting core with resistance changing along with the change of pressure difference, the dynamic adjusting core is provided with an adjusting core inlet and an adjusting core outlet and a medium channel communicated with the adjusting core inlet and the adjusting core outlet, the adjusting core inlet is communicated with the lower cavity, the regulating core outlet is communicated with the central through hole.
2. The adjustable dynamic constant temperature air valve as claimed in claim 1, wherein the dynamic adjustment core comprises a cylindrical shell, the shell is provided with a top cover, the shell is fixedly connected in the lower cavity and is sealed with the valve seat support, the adjustment core inlet is arranged on the side wall of the shell, the adjustment core outlet is arranged on the top cover, the top cover forms a valve seat, a floating cylinder capable of moving up and down is arranged in the shell, and a gap is reserved between the outer wall of the floating cylinder and the inner wall of the shell.
3. The adjustable dynamic constant temperature air valve as claimed in claim 2, wherein the bottom end of the floating cylinder is closed, the top end of the floating cylinder is open, a floating cylinder inlet is arranged on the side wall of the floating cylinder, a spiral spring and a spring top cap are arranged in the floating cylinder, the bottom end of the spiral spring is propped against or fixedly connected to the bottom wall in the floating cylinder, the top end of the spiral spring is propped against or fixedly connected to the spring top cap, and a gap is reserved between the side wall of the spring top cap and the inner wall of the floating cylinder.
4. The adjustable dynamic constant temperature air valve as claimed in claim 3, wherein a guide hole is formed in the top wall of the spring top cap, a guide post extending downwards is arranged in the center of the top cap, and the guide post is inserted into the guide hole.
5. The adjustable dynamic constant temperature air valve as claimed in claim 4, wherein the outlet of the adjusting core is a circular opening and is positioned at the center of the top cover, and the caliber of the outlet of the adjusting core is not smaller than the outer diameter of the floating cylinder.
6. The adjustable dynamic constant temperature air valve as in claim 5, wherein said top cover is provided with a boss extending downward and inserted into said housing, said boss is cylindrical, an outer wall of said boss is in sealing engagement with an inner wall of said housing, an inner wall of said boss is tapered with a gradually expanding inner diameter from top to bottom, and a minimum inner diameter of said boss is not smaller than an outer diameter of said floating cylinder.
7. The valve of any one of claims 1-6, wherein a valve clack is disposed in the valve core cavity, the valve clack is mounted at the lower end of a valve rod, the valve core is provided with a shaft hole, the valve rod is coaxially disposed in the shaft hole of the valve core, and the top end of the valve rod is disposed outside the valve body.
8. The adjustable dynamic constant temperature air valve as claimed in claim 7, wherein the valve rod is sleeved with a spring, the spring is located in the shaft hole of the valve core, an annular flange extending inwards is arranged at the bottom end of the shaft hole of the valve core, the valve rod is in sliding sealing fit with the inner wall of the annular flange, a clamp spring is fixedly arranged in the middle of the valve rod, the bottom end of the spring abuts against the annular flange, and the top end of the spring abuts against the clamp spring.
9. The adjustable flow state constant temperature air valve as recited in claim 8 wherein the top end of said adjustment member is located outside said valve body.
10. The adjustable dynamic constant temperature air valve as claimed in claim 9, wherein a protective cap is arranged at the top end of the valve body, the protective cap is in an inverted cup shape, the protective cap is in threaded connection with the valve body, the top end of the valve rod is propped against the top wall in the protective cap, and a matched clamping structure is arranged on the outer wall of the top end of the protective cap and the adjusting piece.
CN202310497358.9A 2023-05-05 2023-05-05 Adjustable flow state constant temperature air valve Pending CN116379178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310497358.9A CN116379178A (en) 2023-05-05 2023-05-05 Adjustable flow state constant temperature air valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310497358.9A CN116379178A (en) 2023-05-05 2023-05-05 Adjustable flow state constant temperature air valve

Publications (1)

Publication Number Publication Date
CN116379178A true CN116379178A (en) 2023-07-04

Family

ID=86963479

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310497358.9A Pending CN116379178A (en) 2023-05-05 2023-05-05 Adjustable flow state constant temperature air valve

Country Status (1)

Country Link
CN (1) CN116379178A (en)

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