CN111336275B - Flow regulating valve and regulating method thereof - Google Patents
Flow regulating valve and regulating method thereof Download PDFInfo
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- CN111336275B CN111336275B CN202010193250.7A CN202010193250A CN111336275B CN 111336275 B CN111336275 B CN 111336275B CN 202010193250 A CN202010193250 A CN 202010193250A CN 111336275 B CN111336275 B CN 111336275B
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/267—Combination of a sliding valve and a lift valve
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a flow regulating valve and a regulating method thereof, belonging to the technical field of fluid flow regulation. A flow regulating valve comprises a valve body, a piston, a valve rod, a valve cover and a spring; the piston with the inner holes penetrating through the two end faces of the piston is arranged in the water flowing hole between the water inlet and the water outlet of the valve body, and the piston is connected with the valve rod, so that the pressure of fluid on the end face of the piston can be effectively reduced, the adjustment of the piston is facilitated, the driving force of a driving element for driving the piston to move is reduced, the working load of the driving element is reduced, the aperture of the water flowing hole can be increased within the same working load range by the driving element, the use requirement of large flow is met, an adjusting method is further provided, flow adjustment is achieved by adjusting the distance between the end face of the piston and the inner wall of the valve body, the adjustment is stable and reliable, the operation is convenient, the valve has the advantages of reliability in adjustment, long service life and large flow, and the market competitiveness of products is stronger.
Description
Technical Field
The invention relates to the technical field of fluid flow regulation, in particular to a flow regulating valve and a regulating method thereof.
Background
The flow regulating valve is commonly used for regulating and controlling the flow of fluid, has wide application range and convenient operation, and therefore, the optimization of the structure of the flow regulating valve becomes the research direction of the current industry.
With the improvement of living standard of people, more and more houses are provided with ground radiation heating. At present, the temperature control of the ground radiant heating household in the market is generally realized by arranging an electric ball valve or a large-specification (such as DN25) electric stop valve and an automatic temperature control valve at the water inlet front end of a manual adjusting type water distributor. However, the electric ball valve in the market at present is not suitable for throttling flow for a long time due to the structural limitation, and cannot automatically cut off a flow passage even in the case of power failure and the like, so that the reliability is low, and the whole set of equipment has high cost and is not beneficial to popularization; the electric stop valve comprises a normally open type electric stop valve and a normally closed type electric stop valve, when the flow is regulated, the pressure of fluid borne by the front face of the water pressing plate is larger, the pressure of the water pressing plate is larger as the water pressing plate is closer to the end face of the water flowing hole, the pressure is larger as the water flowing hole is larger, and meanwhile, the acting force of a spring in the valve body needs to be overcome when the water pressing plate acts, so that the electric actuator used for controlling the electric stop valve needs to overcome the larger acting force to do work to realize flow control, and the service life of a driving element is seriously influenced. In addition, in order to ensure the service life of the electric stop valve and the automatic temperature control valve, the water flow holes of the existing electric stop valve and the automatic temperature control valve are small, the maximum values of the water flow holes of the electric stop valve and the automatic temperature control valve with large specifications (such as DN25) in the market at present are phi 18 and phi 14 respectively, and the valves with small flow rate are difficult to meet the heating requirement of the whole set of house.
To sum up, the existing flow regulating valve has the defects of incapability of considering both reliable regulation, long service life and large flow.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a flow regulating valve and a regulating method thereof, wherein a piston with an inner hole is arranged in a water flowing hole of a valve body, and the regulation of the flow cross section area of the water flowing hole is realized by regulating the distance between the piston and the inner wall of the valve body, so that the flow regulation is realized, the acting force of a driving element is reduced, the problems of slow driving, lag or incapability of driving are avoided, the regulation is more reliable, the aperture of the water flowing hole is conveniently increased within the working load range of the driving element, the requirement of large flow is met, and the valve has the advantages of high reliability, long service life and large flow.
The specific technical scheme is as follows:
a flow regulating valve comprising: the valve body is provided with a water inlet, a water outlet, a valve cover mounting opening and a water flowing hole which is communicated with the water inlet and the water outlet and is coaxially arranged with the valve cover mounting opening, the valve cover is arranged on the valve cover mounting hole, the valve rod penetrates through the valve cover, one end of the valve rod extends into the valve body, the valve has the characteristics that the piston is arranged in the water flowing hole, the piston and the water flowing hole are coaxially arranged and can reciprocate along the axial direction of the water flowing hole, meanwhile, the piston is provided with an inner hole penetrating through the end faces of the two ends of the piston along the axial direction of the piston, a connecting bolt is arranged in the inner hole of the piston and on the end face close to one side of the valve cover mounting opening, one end of the valve rod extending into the valve body is connected with the connecting bolt, and a positioning bulge is arranged on the inner wall of the valve body and on one side of the water flowing hole, which is deviated from the valve cover mounting hole, and a spring is arranged between the positioning bulge and the connecting bolt.
In the flow control valve, the inner wall of the water flowing hole is provided with a first sealing groove, and a first sealing ring is arranged in the first sealing groove.
The flow regulating valve is characterized in that one end face or two end faces of the two ends of the piston are respectively provided with a second sealing groove, and a second sealing gasket is arranged in each second sealing groove.
The plug hole is formed in the connecting bolt, the valve rod is in interference fit with the plug hole, meanwhile, one end, deviating from the connecting bolt, of the connecting bolt connected with the valve rod is provided with the convex limiting table, and the two ends of the spring are fixedly sleeved on the limiting table and the positioning protrusion respectively.
The through hole is formed in the valve cover, the valve rod is inserted into the through hole, the through hole comprises an upper through hole and a lower through hole which are coaxially arranged, the upper through hole and the lower through hole are arranged in a step structure, and the aperture of the upper through hole is larger than that of the lower through hole.
The flow regulating valve comprises a valve body, a valve rod, an upper sealing ring, a lower sealing ring, an isolation gasket, an upper sealing ring and a pressure cap, wherein the upper sealing ring is arranged in the upper through hole, the upper sealing ring and the pressure cap are sleeved outside the valve rod, the lower sealing ring, the isolation gasket, the upper sealing ring and the pressure cap are sequentially arranged along the inward and outward direction of the valve body, the pressure cap is screwed in the upper through hole and compresses the lower sealing ring, the isolation gasket and the upper sealing ring in the upper through hole.
The flow regulating valve is characterized in that one end of the valve rod, which is positioned in the valve body, is provided with a groove, the groove is wound on the outer wall of the valve rod, and an opening snap ring is clamped in the groove.
In the above flow rate control valve, the water inlet and the water outlet are one of a PPR (polypropylene random copolymer, chinese) loose joint type, an internal thread loose joint type, and a double internal thread loose joint type.
The above flow control valve, wherein the central axes of the water inlet and the water outlet of the valve body are not on the same axis.
A method of adjusting a flow regulating valve for adjusting the flow regulating valve of any one of the above, comprising the steps of: when the flow regulating valve is opened, the distance between the end surface of the piston and the inner wall of the valve body is regulated, so that the end surfaces of the two ends of the piston are not in contact with the inner wall of the valve body, fluid flows to the water outlet through the inner hole of the piston after entering from the water inlet, and the flow regulation is realized by regulating the distance; when the flow regulating valve is closed, one end face of the regulating piston contacts with the inner wall of the valve body and is pressed tightly, and an inner hole of the piston is sealed.
The positive effects of the technical scheme are as follows:
according to the flow regulating valve, the piston with the inner hole is arranged in the water flowing hole between the water inlet and the water outlet of the valve body, the adjustment of the area of the overflowing section is realized by adjusting the distance between the end surface of the piston and the inner wall of the valve body, the flow regulation is realized, the inner wall of the valve body and the inner hole of the piston are respectively changed into the water stop plate and the water flowing hole in the original structure, so that the end surface of the piston is changed into the end surface of the water flowing hole of the valve body in the original structure, the purposes of fixing the water stop plate and moving the end surface of the water flowing hole are realized, the pressure of the water stop plate in the original structure is transferred onto the valve body, the pressure of fluid on the end surface of the piston is reduced, the working load of a driving element is reduced, the aperture of the water flowing hole can be increased within the working load range of the driving element, and the use requirement of large flow is met; in addition, fluid passes through the inner hole of the piston, so that when the fluid passes through, the flow velocity of the fluid at the circumference of the inner wall of the inner hole of the piston is the maximum, and the flow velocity is smaller as the fluid is closer to the center of the inner hole, so that the fluid forms a vortex shape, when the end surface of the piston is attached to the inner wall of the valve body, the fluid can be directly cut off, the flow change is very obvious, and the control on the larger flow is realized through the smaller displacement; in addition, the valve rod with the grooves in different positions can be replaced to realize the switching between the normally open type and the normally closed type of the valve, the product universality is strong, the standardized production is facilitated, and an adjusting method is further provided, so that the flow regulating valve is stable and reliable to adjust, convenient to operate and strong in market competitiveness.
Drawings
FIG. 1 is a block diagram of an embodiment of a flow control valve of the present invention;
FIG. 2 is a perspective view of a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view of another structure in accordance with a preferred embodiment of the present invention.
In the drawings: 1. a valve body; 11. a water inlet; 12. a water outlet; 13. a valve cover mounting opening; 14. a water flowing hole; 15. positioning the projection; 16. a first seal groove; 17. a first seal ring; 2. a piston; 21. a connecting bolt; 22. An inner bore; 23. a support bar; 24. a second seal groove; 25. a second gasket; 211. a keyhole; 212. a limiting table; 3. a valve stem; 31. a groove; 32. a split snap ring; 4. a valve cover; 41. an upper through hole; 42. a lower through hole; 43. a lower seal ring; 44. an isolation gasket; 45. an upper sealing ring; 46. pressing the cap; 47. a third seal ring; 5. a spring.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand, the following embodiments specifically describe the technical solutions provided by the present invention with reference to fig. 1 to 3, but the following contents are not to be taken as limitations of the present invention.
FIG. 1 is a block diagram of an embodiment of a flow control valve of the present invention; FIG. 2 is a perspective view of a preferred embodiment of the present invention. As shown in fig. 1 and 2, the flow rate regulating valve provided in the present embodiment includes: the valve comprises a valve body 1, a piston 2, a valve rod 3, a valve cover 4 and a spring 5, wherein the valve body 1 is provided with a water inlet 11, a water outlet 12 and a valve cover mounting hole 13 arranged between the water inlet 11 and the water outlet 12, a water flowing hole 14 which is communicated with the water inlet 11 and the water outlet 12 and is coaxially arranged with the valve cover mounting hole 13 is further arranged in the valve body 1, and fluid can flow to the water outlet 12 through the water flowing hole after entering through the water inlet 11 of the valve body 1. And be provided with valve gap 4 on valve gap installing port 13, wear to be equipped with valve rod 3 on the valve gap 4, and the one end of valve rod 3 stretches into in the valve body 1, has realized through valve gap 4 that the installation of valve gap installing port 13 also provides the basis for valve rod 3's installation simultaneously, also provides the condition for being connected of later stage valve rod 3 and piston 2 in addition.
Specifically, the piston 2 is arranged in the water flowing hole 14 and is coaxial with the water flowing hole 14, the piston 2 can reciprocate in the water flowing hole 14 along the axial direction, meanwhile, an inner hole 22 penetrating through the end faces of the two ends of the piston 2 is arranged on the piston 2 along the axial direction, so that after the piston 2 is arranged in the water flowing hole 14, fluid can flow from the inner hole 22 on the piston 2, the communication of a flow channel in the valve is realized, the circulation of the fluid is ensured, the flow cross-section area can be adjusted by adjusting the distance between the end face of the piston 2 and the inner wall of the valve body 1, the pressure bearing of a water stop plate in a traditional valve is converted into the pressure bearing of the valve body 1, and the pressure of the fluid on the end face of the piston 2 is reduced, at the moment, the pressure bearing of the end face of the piston 2 from the fluid is only related to the cross-section area of the piston, and the cross-section area of the piston 2 is far smaller than that of the water flowing hole 14, the driving force of the driving element is slightly larger than the elastic force of the spring 5 to push the piston 2 to move along the axial direction, so that the adjustment of the piston 2 is facilitated, the force required for driving a valve is reduced, the workload of the driving element is reduced, the service life is prolonged, meanwhile, the aperture of the drain hole 14 can be effectively increased within the working load range of the driving element, the use requirement of large flow is met, and the adaptability range is wider, in addition, as the fluid passes through the inner hole 22 of the piston 2, the fluid flow speed at the circumference of the inner wall of the inner hole 22 of the piston 2 is the largest when the fluid passes through, and the central flow speed closer to the inner hole 22 is smaller, so that the fluid forms a vortex shape, when the end face of the piston 2 is attached to the inner wall of the valve body 1, the fluid can be directly cut off, the flow change is obvious, namely, the control of large flow is realized through small displacement, under the condition of the same moving distance, the flow change rate is larger than that of a traditional valve, the flow regulation sensitivity is increased, the valve is more suitable for the heating and ventilation field, and the rapid heating or cooling can be realized by controlling the flow of cold/hot water. In the hole 22 of piston 2 and be located the terminal surface that is close to valve gap installing port 13 one side and be provided with the connecting bolt 21 of connecting piston 2, simultaneously, valve rod 3 stretches into the one end in the valve body 1 and is connected with connecting bolt 21 for when controlling valve rod 3, valve rod 3 can drive piston 2 and remove, thereby seals and opens through piston 2 to flow water hole 14. In addition, a positioning bulge 15 is arranged on the inner wall of the valve body 1 and on one side of the water flowing hole 14, which is far away from the valve cover mounting opening 13, and a spring 5 is arranged between the positioning bulge 15 and the connecting bolt 21, so that the spring 5 can be used as a reset auxiliary part for the movement of the piston 2, the external operation burden when the piston 2 is reset is reduced, and the structural design is more reasonable.
More specifically, still be provided with a plurality of bracing pieces 23 between the inner wall of connecting bolt 21 and hole 22, and form water channel between two adjacent bracing pieces 23, realized the fixing of connecting bolt 21 in the hole 22 of piston 2 promptly through setting up of bracing piece 23, made things convenient for valve rod 3 to drive the erection joint of piston 2 to make valve rod 3 can drive piston 2 motion, in addition, the hole 22 of also having guaranteed piston 2 possesses the water channel that the fluid passes through, structural design is more reasonable.
More specifically, a first sealing groove 16 is formed in the inner wall of the water flowing hole 14, and a first sealing ring 17 is arranged in the first sealing groove 16, so that after the piston 2 is installed in the water flowing hole 14, the outer wall of the piston 2 and the inner wall of the water flowing hole 14 are sealed through the first sealing ring 17, water tightness of the piston 2 and the valve body 1 at the position of the water flowing hole 14 is guaranteed, reliability of the valve is improved, and the structural design is more reasonable.
More specifically, a second sealing groove 24 is formed in one or two end faces of two ends of the piston 2, and a second sealing gasket 25 is arranged in the second sealing groove 24. Through the setting of the second sealed pad 25, can realize the sealed between the terminal surface of piston 2 and the inner wall of valve body 1, make piston 2 at the removal in-process, the sealed pad 25 of second on its terminal surface of accessible leans on the inner wall of valve body 1, thereby realize the shutoff to the hole 22 of piston 2, realize cutting through water channel, realize closing of valve promptly, otherwise, the sealed pad 25 of second on its terminal surface of piston 2 removal in-process leaves the inner wall of valve body 1, at this moment, the hole 22 of piston 2 is opened, realize water channel's noncongestion, realize opening of valve promptly.
More specifically, the bolt hole 211 has been seted up on the connecting bolt 21, and valve rod 3 and bolt hole 211 interference fit have made things convenient for piston 2 and valve rod 3's connection through bolt hole 211, and interference fit between them makes the connection more stable, has guaranteed the reliability of valve opening and closing control. Simultaneously, connecting bolt 21 deviates from the one end that valve rod 3 is connected and is provided with bellied spacing platform 212, and the both ends of spring 5 are fixed the cover respectively and are located spacing platform 212 and fix a position protruding 15 on, through the setting of spacing platform 212 for outside spacing platform 212 can be located to spring 5's one end cover, thereby realized spring 5 and connecting bolt 21's stable connection, structural design is more reasonable, and the security is higher.
More specifically, the through-hole has been seted up on valve gap 4, valve rod 3 is inserted and is located in the through-hole, make valve rod 3 remove in the through-hole, and the through-hole includes coaxial setting's last through-hole 41 and lower through-hole 42, it is the stair structure setting with lower through-hole 42 to go up through-hole 41, and the aperture of going up through-hole 41 is greater than the aperture of lower through-hole 42, setting through last through-hole 41, for setting up seal structure between valve gap 4 and valve rod 3 provides the structure basis, and through the setting of lower through-hole 42, the one end of having made things convenient for valve rod 3 is passed and is deepened in valve body 1 behind valve gap 4, structural design is more reasonable.
More specifically, an upper sealing structure is arranged in the upper through hole 41, so that the sealing between the valve cover 4 and the valve rod 3 is realized through the upper sealing structure, and the sealing performance of the valve is ensured. And the upper sealing structure also comprises a lower sealing ring 43, an isolation gasket 44, an upper sealing ring 45 and a pressing cap 46, the lower sealing ring 43, the isolation gasket 44, the upper sealing ring 45 and the pressing cap 46 are all sleeved outside the valve rod 3, and the lower sealing ring 43, the isolation gasket 44, the upper sealing ring 45 and the pressing cap 46 are sequentially arranged along the inward and outward direction of the valve body 1, the pressing cap 46 is screwed in the upper through hole 41 and tightly presses the lower sealing ring 43, the isolation gasket 44 and the upper sealing ring 45 in the upper through hole 41, through the arrangement of the lower sealing ring 43, the isolation gasket 44, the upper sealing ring 45 and the pressing cap 46, the stability of the installation of the valve rod 3 on the valve cover 4 is realized, the sealing between the valve rod 3 and the valve cover 4 is also realized, and the structural design is more reasonable.
More specifically, the one end that just is located in stretching into valve body 1 on the valve rod 3 is provided with recess 31, and recess 31 is around locating on the outer wall of valve rod 3, and be equipped with opening snap ring 32 in recess 31 inside callipers, the installation of opening snap ring 32 has been made things convenient for through recess 31, and simultaneously, can realize the location between valve rod 3 and the valve gap 4 through opening snap ring 32, can control the location of the position of piston 2 in valve body 1 of being connected with valve rod 3, realize the setting of valve open type or normal close type, structural design is more reasonable.
When the second sealing gasket 25 is located on the end face of the piston 2 close to one end of the positioning protrusion 15, the distance between the snap ring 32 and the connecting bolt 21 in the inner hole 22 of the piston 2 is long, so that when the snap ring 32 abuts against the valve cover 4, the end face of the piston 2 close to one end of the valve cover 4 cannot contact the inner wall of the valve body 1, and the valve is defined as a normally open valve. In an initial state, two end faces of the piston 2 are not in contact with the inner wall of the valve body 1, an inner hole 22 of the piston 2 is in a smooth state, and fluid can flow in the valve; when needs are adjusted and the valve is closed, move valve rod 3 to valve body 1 in, piston 2 moves to one side of location arch 15 in flowing water hole 14, and spring 5 is compressed gradually, supports until the terminal surface of piston 2 supports on the inner wall in valve body 1, seals through second sealed pad 25 between the terminal surface of piston 2 and the inner wall of valve body 1, realizes cuting the hole 22 of piston 2, realizes closing of valve promptly.
FIG. 3 is a cross-sectional view of another structure in accordance with a preferred embodiment of the present invention. As shown in fig. 3, when the second sealing gasket 25 is located on the end surface of the piston 2 close to one end of the valve cover 4, at this time, the distance between the snap ring 32 and the connecting bolt 21 in the inner hole 22 of the piston 2 is short, so that when the snap ring 32 abuts against the valve cover 4, the end surface of the piston 2 close to one section of the valve cover 4 just abuts against the inner wall of the valve body 1, at this time, the piston 2 and the valve body 1 are sealed by the second sealing gasket 25, the inner hole 22 of the piston 2 is cut off, the valve is in a closed state, and the valve is defined as a normally closed valve. In the initial state, the valve is in a closed state; when the valve needs to be adjusted and opened, the valve rod 3 moves towards the valve body 1, the piston 2 moves towards one side of the positioning protrusion 15 in the water flowing hole 14, the spring 5 is gradually compressed, the end face, provided with the second sealing gasket 25, of the piston 2 is gradually far away from the inner wall of the valve body 1, so that the inner hole 22 of the piston 2 is in an unblocked state, and fluid can flow in the valve to realize the opening of the valve.
Among the above-mentioned valve, open control of valve can all be realized to open valve and closed valve, and all realize through contacting between the terminal surface of the piston 2 in the valve and the 1 inner wall of valve body whether, and the non-directivity requirement can realize the non-directivity installation of valve for also need not the secondary dismouting under the valve dress anti-circumstances, structural design is more reasonable, and adaptability is higher, and it is more convenient to install, simultaneously, also makes the valve wash more easily. And, the internals of open valve door and closed valve door is the same basically, switch between open valve door and the closed valve door only need change have different positions the recess 31 the valve rod 3 can, the product commonality is stronger, and accommodation is wide, both had do benefit to standardized production, also be convenient for later maintenance and maintenance. More specifically, the water inlet 11 and the water outlet 12 of the valve are one of a PPR loose joint type, an internal thread loose joint type and a double internal thread loose joint type, so that the connection between the valve and an external pipeline is facilitated, and the structural design is more reasonable.
As a preferred embodiment, a third sealing ring 47 is arranged between the bonnet mounting opening 13 of the valve body 1 and the bonnet 4, so that the bonnet 4 and the valve body 1 can be sealed through the third sealing ring 47, thereby preventing fluid from leaking from a joint between the bonnet 4 and the valve body 1, realizing sealing after the bonnet 4 is loosened, improving the sealing performance of the valve, and ensuring higher safety.
As a preferred embodiment, as shown in fig. 2, the water inlet 11 and the water outlet 12 of the valve body 1 are located in different axial directions, that is, the axes of the water inlet 11 and the water outlet 12 are not located on the same axis, so that the water inlet 11 and the water outlet 12 are eccentrically arranged, which not only facilitates the increase of the flow cross-sectional area of the water inlet 11 and the water outlet 12 of the valve body 1 and the increase of the flow rate, but also facilitates the increase of the aperture of the water flowing hole 14 of the valve body 1, so that the water flowing hole 14 with the increased aperture can still meet the design requirement that the flow cross-sectional area is smaller than the flow cross-sectional area of the water inlet 11 and the water outlet 12 of the valve body 1, thereby avoiding the loss of the flow regulation function while ensuring the large flow rate, and the structural design is more reasonable.
In addition, an adjusting method for adjusting the flow regulating valve is also provided, and comprises the following steps: when the flow regulating valve is opened, the distance between the end face of the piston 2 and the inner wall of the valve body 1 is regulated, so that the end faces of the two ends of the piston 2 are not in contact with the inner wall of the valve body 1, fluid flows to the water outlet 12 through the inner hole 22 of the piston 2 after entering from the water inlet 11, and the flow regulation is realized by regulating the distance; when the flow regulating valve is closed, one end face of the regulating piston 2 contacts and presses against the inner wall of the valve body 1, and the inner hole 22 of the piston 2 is sealed. The adjustment is stable and reliable, and the operation is more convenient.
The flow regulating valve provided by the embodiment comprises a valve body 1, a piston 2, a valve rod 3, a valve cover 4 and a spring 5; the piston 2 with the inner hole 22 penetrating through the two end faces is arranged in the water flowing hole 14 between the water inlet 11 and the water outlet 12 of the valve body 1, so that fluid in the valve body 1 flows through the inner hole 22 of the piston 2, the adjustment of the area of the overflowing section is realized by adjusting the distance between the end face of the piston 2 and the inner wall of the valve body 1, the flow adjustment is realized, the pressure generated by the fluid is greatly transferred onto the valve body 1 from the piston 2, the pressure of the fluid on the end face of the piston 2 is reduced, the adjustment of the piston 2 is facilitated, the driving force of a driving element for driving the piston 2 to move is reduced, the working load of the driving element is lightened, the aperture of the water flowing hole 14 can be increased within the same working load range by the driving element, the use requirement of large flow is met, and an adjusting method is provided, the flow adjustment is realized by adjusting the distance between the end face of the piston 2 and the inner wall of the valve body 1, the regulation is stable, reliable, convenient operation for the valve can have simultaneously and adjust reliably, long service life, advantage that the flow is big, and product market competition is stronger.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A flow regulating valve comprising: valve body, piston, valve rod, valve gap and spring, the valve body be provided with water inlet, delivery port, valve gap installing port and intercommunication the water inlet with the delivery port and with the drain hole of the coaxial setting of valve gap installing port, and in be provided with on the valve gap installing hole the valve gap, wear to be equipped with on the valve gap the valve rod, just the one end of valve rod stretches into in the valve body, its characterized in that, the piston set up in the drain hole, just the piston with the coaxial setting of drain hole, and can follow the axial reciprocating motion of drain hole, simultaneously, be provided with the hole that runs through its both ends terminal surface along its axial on the piston, the piston just be located in the hole and be close to be provided with the connecting bolt on the terminal surface of valve gap installing port one side, the valve rod stretches into one end in the valve body with the connecting bolt is connected, and, in on the inner wall of valve body and be located the drain hole deviates from one side of valve gap installing hole is provided with decides The positioning bulge is arranged, and the spring is arranged between the positioning bulge and the connecting bolt;
a first sealing groove is formed in the inner wall of the water flowing hole, and a first sealing ring is arranged in the first sealing groove;
and a second sealing groove is formed in one end face or two end faces of the two ends of the piston, and a second sealing gasket is arranged in the second sealing groove.
2. The flow control valve according to claim 1, wherein the connecting bolt has a bolt hole, the valve rod is in interference fit with the bolt hole, a protruding limiting platform is disposed at an end of the connecting bolt away from the end connected to the valve rod, and two ends of the spring are respectively and fixedly sleeved on the limiting platform and the positioning protrusion.
3. The flow control valve according to claim 1, wherein the valve cover has a through hole, the valve rod is inserted into the through hole, and the through hole includes an upper through hole and a lower through hole which are coaxially arranged, the upper through hole and the lower through hole are arranged in a step structure, and the diameter of the upper through hole is larger than that of the lower through hole.
4. The flow control valve according to claim 3, wherein an upper sealing structure is disposed in the upper through hole, the upper sealing structure includes a lower sealing ring, an isolation gasket, an upper sealing ring and a pressing cap, the lower sealing ring, the isolation gasket, the upper sealing ring and the pressing cap are all sleeved outside the valve rod, and along an outward direction in the valve body, the lower sealing ring, the isolation gasket, the upper sealing ring and the pressing cap are sequentially disposed, and the pressing cap is screwed into the upper through hole and compresses the lower sealing ring, the isolation gasket and the upper sealing ring into the upper through hole.
5. The flow control valve of claim 1, wherein a groove is formed in the end of the valve stem that extends into the valve body, the groove is wound around the outer wall of the valve stem, and a snap ring is clamped in the groove.
6. The flow control valve of claim 1, wherein the water inlet and the water outlet are of the female-wire-type loose-joint type.
7. The flow control valve of claim 1, wherein the central axes of the water inlet and the water outlet of the valve body are not on the same axis.
8. A method of adjusting a flow rate adjusting valve according to any one of claims 1 to 7, comprising the steps of: when the flow regulating valve is opened, the distance between the end surface of the piston and the inner wall of the valve body is regulated, so that the end surfaces of the two ends of the piston are not in contact with the inner wall of the valve body, fluid flows to the water outlet through the inner hole of the piston after entering from the water inlet, and the flow regulation is realized by regulating the distance; when the flow regulating valve is closed, one end face of the piston is regulated to contact with the inner wall of the valve body and tightly press the valve body, and the inner hole of the piston is sealed.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2451837Y (en) * | 2000-11-11 | 2001-10-03 | 林毕辉 | Electromagnetic valve |
| ITTO20040777A1 (en) * | 2004-11-09 | 2005-02-09 | Gevipi Ag | THERMOSTATIC MIXER INCLUDING A DYNAMIC CONTROL DEVICE FOR A WATER FLOW |
| DE102006003271A1 (en) * | 2006-01-19 | 2007-07-26 | Behr Thermot-Tronik Gmbh | Thermostatic valve for connecting an automatic transmission to an oil cooler |
| CN201672121U (en) * | 2010-05-27 | 2010-12-15 | 邹维民 | Novel temperature control valve |
| CN202532001U (en) * | 2012-03-27 | 2012-11-14 | 福建海洋铜业有限公司 | Valve element assembly of constant-temperature temperature control valve |
| CN202691220U (en) * | 2012-07-31 | 2013-01-23 | 佛山市百暖江节能系统有限公司 | Automatic temperature control valve |
| CN205745393U (en) * | 2016-05-24 | 2016-11-30 | 河北惠沧节能科技有限公司 | A kind of self-operated flow regulator |
| CN205780896U (en) * | 2016-05-26 | 2016-12-07 | 宁波埃美柯铜阀门有限公司 | Flow-rate adjustment electric temperature control valve |
| CN110725998B (en) * | 2019-10-17 | 2021-02-26 | 浙江锋源仪表有限公司 | Temperature control valve convenient to maintain |
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