CN107191645B - Adjustable dynamic balance valve - Google Patents
Adjustable dynamic balance valve Download PDFInfo
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- CN107191645B CN107191645B CN201710443515.2A CN201710443515A CN107191645B CN 107191645 B CN107191645 B CN 107191645B CN 201710443515 A CN201710443515 A CN 201710443515A CN 107191645 B CN107191645 B CN 107191645B
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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
- 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
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to an adjustable dynamic balance valve, wherein an elastic or flexible sealing element is arranged in a valve cavity, the valve cavity is divided into an upper cavity and a lower cavity which are not directly communicated with each other, a valve core is arranged in the lower cavity, a valve core cavity is communicated with a valve water inlet through a valve core cavity water inlet channel and is communicated with a valve water outlet through a valve core cavity water outlet, the valve core cavity water outlet is arranged on the side wall of the valve core, at least part of the area of an inner side opening of the valve core cavity is positioned in a variable shielding area below the sealing element, the lower part of a valve rod is positioned in the valve core cavity and is in threaded connection with an adjusting slide block for flow setting, the valve rod. The invention has simple structure, convenient operation and sensitive reaction and achieves the effect of stable output flow.
Description
Technical Field
The invention relates to a balance valve, in particular to a dynamic balance valve with adjustable flow.
Background
The balance of hydraulic working conditions refers to reasonable distribution of flow management. In heat supply and air conditioning pipe networks, water is a heat carrier medium, and reasonable distribution of water flow is the basis of heat working condition balance. Taking a heating system as an example, a designer performs calculation on the hydraulic working condition under the hypothetical condition that the flow rate of each branch is a design value. Due to the limitations of the pipe and the maximum flow velocity, it is almost impossible to achieve a hydraulic balance in design. Therefore, the near-end resistance coefficient cannot reach the ideal design state, and the imbalance phenomena of over-large near-end flow and insufficient far-end flow are formed.
The balance valve is a valve with special function, has quantitative measuring function and adjusting function, and can adjust the preset flow of each distribution point (such as each building seat) in the system, so that the total flow of the heating system is reasonably distributed, and the flow adjusting problem is well solved.
Despite its many advantages, the use of a balancing valve in air conditioning water systems presents a number of problems. The existing balance valve has a complex structure and is difficult to operate, non-management personnel cannot operate conveniently, the characteristics of the balance valve cannot be fully shown, and the automatic balance effect is limited to a certain extent.
Disclosure of Invention
In order to solve the technical problems, the invention provides an adjustable dynamic balance valve which is simple in structure, convenient to operate, sensitive in response and capable of achieving the effect of stable output flow.
The technical scheme of the invention is as follows:
an adjustable dynamic balance valve comprises a valve body and a valve rod, wherein the valve body is provided with a valve cavity, a valve water inlet and a valve water outlet which are communicated with the valve cavity, an upper cover which can seal a valve core mounting port is fixedly mounted on a valve core mounting port of the valve body, an elastic or flexible sealing element is arranged in the valve cavity, the valve cavity is divided into an upper cavity and a lower cavity which are not directly communicated with each other by the sealing element, the peripheral edge of the sealing element is connected with the cavity wall of the valve cavity, the valve rod penetrates through a valve rod hole of the upper cover and a valve rod hole of the sealing element, is rotatably connected with the upper cover and is fixedly or slidably connected with the sealing element, a valve core is arranged in the lower cavity, the valve core is provided with a valve core cavity which forms a medium flow passage between the valve water inlet and the valve water outlet, the top, the intercommunication the valve water inlet communicates through case chamber apopore the valve delivery port, case chamber apopore is equipped with on the lateral wall of case, at least partial area in its inside opening is located the variable region of sheltering from of sealing element below, the lower part of valve rod is located case intracavity and threaded connection have the regulating slider who is used for the flow to set for, be equipped with axial valve stem hole and valve stem hole water inlet and valve stem hole delivery port in the valve rod, valve stem hole water inlet intercommunication case chamber inhalant canal, valve stem hole delivery port intercommunication the epicoele.
The invention has the beneficial effects that:
the invention completely adopts a pure mechanical structure, does not contain electromagnetic control, and has simple structure and low cost; because the flow at the inlet is introduced into the two cavities, the size of the water outlet hole of the valve core cavity is automatically adjusted by the pressure difference change of the inlet and outlet sides when pressure fluctuation occurs, the flow fluctuation caused by the pressure difference is counteracted, and the valve core cavity is sensitive in response, good in reliability and not easy to break down; the flow can be set and adjusted by rotating the valve rod, and the operation is convenient; and flow indication can be set, so that the current valve opening degree and the set flow can be conveniently known, and the use is convenient. The dynamic balance valve is convenient to operate, has good automatic balance characteristic, and can be operated correspondingly by any user without special managers.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is another schematic view corresponding to fig. 1 for ease of reference.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the adjustable dynamic balance valve provided by the present invention includes a valve body 10 and a valve rod 9, the valve body is provided with a valve cavity, a valve inlet 24 and a valve outlet 20 communicating with the valve cavity, an upper cover 7 capable of sealing a valve core mounting port is fixedly mounted on a valve core mounting port 18 of the valve body, an elastic or flexible sealing element 12 is disposed in the valve cavity, the sealing element divides the valve cavity into an upper cavity 26 and a lower cavity 21 which are not directly communicated with each other, peripheral edges of the upper cavity are connected to a cavity wall of the valve cavity, the valve rod passes through a valve rod hole of the upper cover and a valve rod hole of the sealing element, is rotatably connected to the upper cover, and is fixedly connected or slidably connected to the sealing element (a movable connection manner allowing the sealing element at the connection to axially slide relative to the valve rod), a valve core 13 is disposed in the lower cavity, and the valve core may, so as to be convenient for processing and manufacturing, or be integrated with the valve body or be formed integrally, the valve core is provided with a valve core cavity which forms a medium flow channel between the valve water inlet and the valve water outlet, the top of the valve core is open, the valve core cavity is communicated with the valve water inlet through a valve core cavity water inlet channel (a water inlet side cavity and/or channel of a flow setting pair), and is communicated with the valve water outlet through a valve core cavity water outlet 19, the valve core cavity water outlet is provided on the side wall of the valve core, at least part of the area of the inner side opening of the valve core cavity is located in a variable shielding area (an area which can be shielded by the sealing element and the shielding degree of which is changed according to the change of the sealing element, the shielding comprises various shielding and/or covering situations which influence resistance and flow, for example, the situation that the resistance is increased to further, the lower part of the valve rod is positioned in the valve core cavity and is in threaded connection with an adjusting slide block 15 for flow setting, and the adjusting slide block can move up and down when the valve rod rotates, any suitable prior art can be adopted, the adjusting slide block is used as a movable piece for flow setting value setting and adjustment to form a flow setting pair (a movable pair for flow setting formed by a movable piece and a fixed piece), the setting or adjustment of the flow setting value is realized through the up-and-down movement of the adjusting slide block, an axial valve rod hole, a valve rod hole water inlet and a valve rod hole water outlet are arranged in the valve rod, the valve rod hole water inlet is communicated with the valve core cavity water inlet channel (for example, the valve rod hole water inlet channel is directly positioned in the valve core water inlet channel or is communicated with the valve core water inlet channel through a relevant connecting channel), and the valve rod hole water outlet is communicated with, therefore, water in the water inlet channel of the valve core cavity can directly enter the upper cavity through the valve rod hole without being hindered by the flow setting pair and the sealing element, when the pressure difference between the water inlet side and the water outlet side of the valve is increased due to the pressure increase of the pipeline at the water inlet side of the valve and/or the pressure decrease of the pipeline at the water outlet side of the valve, the pressure difference between the upper side and the lower side of the sealing element (namely the pressure difference between the upper cavity and the lower cavity) is increased, the sealing element is pressed downwards, the main body part of the sealing element extends downwards and/or moves to start to shield the water outlet hole of the valve core cavity or increase the shielding degree of the water outlet hole of the valve core cavity by means of the deformation of the sealing element and/or the displacement caused by the downward sliding of the sealing element relative to the valve rod, so as to offset the flow increase caused by the pressure increase, otherwise, when the pressure difference between the water inlet side and the water outlet side, the pressure difference between the upper side and the lower side of the sealing element is reduced, the main body part of the sealing element contracts and/or moves upwards under the action of the elastic force recovery of the sealing element and/or the action of a return spring matched with the sliding connection of the sealing element on the valve rod, the shielding degree of the water outlet hole of the valve core cavity is reduced, even the water outlet hole of the valve core cavity is not shielded any more, so that the flow reduction caused by the reduction of the pressure difference is counteracted, therefore, the automatic flow stabilization and balance under the pressure fluctuation are realized, the relevant structures and parameters can be obtained or optimized through theoretical calculation and/or experimental verification according to the prior art, and the better flow stabilization and balance effects are obtained.
The valve water inlet and the valve water outlet can be both in a tubular shape, and the pipe orifices form medium inflow or inflow channels, and for the sake of simplicity, the medium flow channels can also be directly called as the valve water inlet and the valve water outlet.
The shapes of the end parts of the valve water inlet and the valve water outlet can be regular hexagonal prism or regular quadrangular suitable for being operated by a wrench, and internal threads can be arranged in the pipe hole so as to facilitate pipeline connection.
The sealing element can adopt any suitable shape as long as the sealing element is enabled to expand and/or move towards the water outlet of the valve core cavity under the action of the pressures on the upper side and the lower side of the sealing element. For example, the sealing unit may be a downwardly convex spherical crown shape, the inlet of the water outlet of the valve core chamber is arranged in the direction of the convex spherical crown shape, and the spherical crown is enabled to approach and/or shield the inner side opening of the water outlet of the valve core chamber within a certain pressure difference change range due to pressure expansion and/or movement.
Preferably, the sealing element is an elastic sheet in a shape of a rotational curved surface, the longitudinal section of the sealing element is approximately in a W shape with smooth corners (the basic outline is) and the central portion of the sealing element is provided with a valve rod hole capable of passing through a valve rod, an annular convex part in a lower convex shape is arranged between the valve rod hole and the peripheral edge of the sealing element, the peripheral edge of the sealing element is fixed at the top port of the valve core, a relevant part (such as an upper cover) can be generally adopted to clamp the peripheral edge of the sealing element between the end face of the lower end of the sealing element and the end face of the port at the upper end of the valve core (see fig. 1) so as to realize the connection and the fixation of the peripheral portion of the sealing element, the annular convex part of the sealing element is positioned in the valve core, the radial outer side surface of the annular convex part is adjacent to the inner wall of the, when the pressure difference between the upper side and the lower side of the sealing element is increased, the annular convex part of the sealing element expands downwards (axially downwards) and outwards (radially outwards), the distance between the annular convex part and the inner wall of the valve core is reduced, even a part of area is directly attached to the inner wall of the valve core, and the shielding degree of the water outlet of the valve core cavity is increased, so that the resistance to the medium flow is increased, when the sealing element is in sliding connection with the valve rod, the sealing element can move downwards from the central part, further the annular convex part is driven to move downwards and outwards to a certain extent, the shielding degree of the water outlet of the valve core cavity is further increased, the material characteristics, the specific shape, the size, the setting position and the like of the sealing element are properly selected or optimized, and the influence degree and the influence change law on the medium flow resistance when the pipeline pressure on the water inlet side and the water outlet side of the valve, so that the influence caused by the change of the pressure difference can be just counteracted.
The upper part of the valve rod can be provided with a polished rod section, the lower part of the valve rod can be provided with an external thread section, the valve rod is in sliding connection with the sealing element through a sliding element 11, the sliding element is provided with a vertical central through hole and is sleeved on the polished rod section at the upper part of the valve rod through the central through hole and is in clearance fit with the polished rod section, an annular groove is arranged on the outer side surface of the upper part of the sliding element, the edge part of a valve rod hole of the sealing element is embedded in the annular groove of the sliding element, the outer side surface of the lower part of the sliding element is preferably in a frustum shape with a large lower part and a small upper part, and the height of the lower end is not higher than that of the lower end of the annular convex part of the sealing element, so that the annular convex part of the sealing element is extruded or limited in the annular gap between the outer side surface of the annular convex part and, and when the annular convex part is pressed and expanded, the inner wall of the valve core is more effectively and reliably pressed and extruded, the water outlet hole of the valve core cavity is effectively shielded, and the sensitivity and the reliability of automatic balance are improved.
The lower part of the sliding element is provided with an inward concave upper spring mounting seat, the upper spring mounting seat is preferably in a cup shape with a downward opening, the upper part of the adjusting sliding block is provided with an inward concave lower spring mounting seat, the lower spring mounting seat is preferably in a cup shape with an opening facing, a spiral spring 30 used as a return spring is mounted between the sliding element and the adjusting sliding block, the spiral spring is sleeved on the valve rod, the upper end of the spiral spring is mounted on the upper spring mounting seat, the lower end of the spiral spring is mounted on the lower spring mounting seat, when the sealing element moves downwards under the action of pressure difference between the upper side and the lower side, the sliding element is driven to move downwards to compress the return spring and balance at a pressure balance point, and when the pressure difference between the upper side and the lower side of the sealing element is reduced, the sliding element moves upwards under the pushing of the return spring.
Preferably, the regulating slider is located above the top outlet of the valve core cavity water inlet channel, and is matched with the top outlet of the valve core cavity water inlet channel to jointly form a flow setting pair capable of manually setting and regulating flow, and valve sealing surfaces capable of being matched with each other can be arranged or not arranged at the bottom of the regulating slider and the top outlet of the valve core cavity water inlet channel, so that a secondary shutoff medium flow is allowed to be set through the flow or a shutoff function is not arranged, and any appropriate valve core cavity water inlet channel matched with the regulating slider for flow setting can be arranged by adopting any appropriate prior art. The specific setting and adjusting mode of the flow is that the vertical position of the adjusting slide block is changed by rotating the valve rod, so that a gap (or called interval) between the adjusting slide block and a top outlet of the valve core cavity water inlet channel is changed, the opening degree of the flow setting pair is changed, and the setting or adjusting flow is determined.
When the sealing element is connected with the valve rod in a sliding mode through the sliding element and the corresponding return spring is arranged between the sliding element and the adjusting sliding block, the lower end of the return spring is driven to move together due to the up-down movement of the adjusting sliding block, the sliding element is pushed, the central portion of the sealing element is driven to move in the same direction, new pressure balance is achieved, relevant resistance formed by the sealing element and relevant resistance formed by the adjusting sliding block change in the same direction, therefore, the adjusting effect is enlarged, and the adjusting is quicker.
The valve rod can be tubular (including a section of the valve rod is tubular), the pipe hole of the valve rod forms the valve rod hole, the upper port of the valve rod hole forms the valve rod hole water outlet, the lower port of the valve rod hole forms the valve rod hole water inlet, the bottom of the valve core is provided with a cylindrical annular boss 22 extending upwards, the central through hole of the annular boss penetrates through the bottom of the valve core (or the bottom of the valve core is provided with a through hole which is connected with the central through hole of the annular boss into the same through hole) and is communicated with the valve water inlet through a connecting channel (for example, a connecting hole and/or a connecting groove 23 for realizing the communication are arranged on the valve body and/or the valve core), the lower end of the valve rod extends into the annular boss, so that the water of the valve water inlet is led into the central through hole of the annular boss and then led into the valve rod hole and the upper cavity, the central through hole of the annular boss is used as a water inlet channel of the valve core cavity, the flow set value is adjusted by adjusting the distance between the adjusting slider and the annular boss, the lower end part of the valve rod inserted into the annular boss can be set as a polished rod, and a rotary limiting structure of the valve rod is arranged in the annular boss, so that the rotary positioning of the lower end part of the valve rod is realized, and the rotary stability of the valve rod is improved.
A valve cavity sealing ring 14 which is horizontally arranged can be arranged between the inner wall of the valve cavity and the outer wall of the valve core, the valve water inlet and the valve water outlet are respectively positioned at the upper side and the lower side of the valve cavity sealing ring, so that a medium flow channel of the valve water inlet and the valve water outlet passing through a gap between the inner wall of the valve cavity and the outer wall of the valve core is cut off by the valve cavity sealing ring, and required sealing rings 4 and 8 and the like are also arranged at other parts needing to be sealed according to sealing requirements.
The upper end of the valve rod is coaxially connected with the lower end of the adjusting rod 2 through a spline connection structure, the adjusting rod is provided with an external thread or is fixedly sleeved with an external thread sleeve 5 with an external thread, the adjusting rod or the external thread sleeve is in threaded connection with a pointer sleeve 6 with an internal thread, the pointer sleeve is provided with a pointer extending outwards in the radial direction, the upper cover is fixedly provided with a cylindrical scale cover 3, the side wall of the scale cover is provided with a vertical long-strip-shaped pointer through hole, the side of the pointer through hole is provided with a scale used for indicating the height of the pointer, the pointer is inserted into the pointer through hole, the outer end of the pointer is positioned outside the pointer through hole or in the pointer through hole (including being parallel and level with the outer side surface of the scale cover), the width of the pointer through hole can be slightly larger than, therefore, when the adjusting rod rotates, the pointer sleeve moves up and down along with the rotation of the valve rod by means of corresponding thread action, the pointer moves up and down, the height of the pointer is positively correlated with the height of the adjusting slide block, and therefore the set flow rate under the corresponding height of the adjusting slide block is indicated, and the height record is displayed and stored.
The top of the external thread sleeve is preferably an expanding section, an annular groove is formed between the inner wall of the external thread sleeve and the top of the adjusting rod, the blocking cover 1 is buckled on the annular groove between the top of the external thread sleeve and the top of the adjusting rod, the top of the adjusting rod is located in the blocking cover and is preferably in a square or regular hexagon column shape, so that adjustment can be completed conveniently by using tools such as a wrench, the height of the top end of the scale cover is not lower than that of the top end of the external thread sleeve, and therefore the top end of the external thread sleeve is prevented from being exposed.
The valve body can also be provided with a flow setting auxiliary water inlet side measuring port and a flow setting auxiliary water outlet side measuring port 25, the flow setting auxiliary water inlet side measuring port is communicated with the valve water inlet or the valve core cavity water inlet channel, the flow setting auxiliary water outlet side measuring port is communicated with the valve core cavity or the valve water outlet, and the inner wall of each measuring port is provided with an internal thread for installing a measuring port cover 16 or a measuring device.
The technical means disclosed by the invention can be combined arbitrarily to form a plurality of different technical schemes except for special description and the further limitation that one technical means is another technical means.
Claims (10)
1. An adjustable dynamic balance valve comprises a valve body and a valve rod, wherein the valve body is provided with a valve cavity, a valve water inlet and a valve water outlet which are communicated with the valve cavity, and an upper cover which can seal the valve core mounting opening is fixedly mounted on the valve core mounting opening of the valve body, and the adjustable dynamic balance valve is characterized in that an elastic or flexible sealing element is arranged in the valve cavity, the sealing element is an elastic sheet material in a rotary curved surface shape, the longitudinal section of the sealing element is in a W shape with smooth corners, the sealing element divides the valve cavity into an upper cavity and a lower cavity which are not directly communicated with each other, the peripheral edge of the sealing element is connected on the cavity wall of the valve cavity, the valve rod penetrates through a valve rod hole of the upper cover and a valve rod hole of the sealing element, is rotatably connected with the upper cover and is in sliding connection with the sealing element, a valve core is arranged in the lower cavity, the valve, the valve core cavity is communicated with the valve water inlet through a valve core cavity water inlet channel and is communicated with the valve water outlet through a valve core cavity water outlet, the valve core cavity water outlet is arranged on the side wall of the valve core, at least part of area of the inner side opening of the valve core cavity is positioned in a variable shielding area below the sealing element, the lower part of the valve rod is positioned in the valve core cavity and is in threaded connection with an adjusting slider for flow setting, an axial valve rod hole, a valve rod hole water inlet and a valve rod hole water outlet are arranged in the valve rod, the valve rod hole water inlet is communicated with the valve core cavity water inlet channel, the valve rod hole water outlet is communicated with the upper cavity, the upper part of the valve rod is provided with a polished rod section, the lower part of the valve rod is provided with an external thread section, the valve rod is in sliding connection with the sealing element through a sliding element, the sliding element is provided with a vertical central through hole, is sleeved on, the outer side surface of the lower part of the sliding element is in a frustum shape with a large lower part and a small upper part, the height of the lower end of the sliding element is not higher than that of the lower end of the annular convex part of the sealing element, the annular convex part of the sealing element is extruded or limited in an annular gap between the outer side surface of the sealing element and the inner side surface of the valve core, the central part of the sealing element is provided with a valve rod hole capable of penetrating through a valve rod, an annular convex part which is in an annular lower convex shape is arranged between the valve rod hole and the peripheral edge of the sealing element, the annular convex part of the sealing element is positioned in the valve core, the radial outer side surface of the annular convex part is adjacent to the inner wall of the valve core, the water outlet of the valve core cavity is positioned on the radial outer side of the annular convex part, the upper end of the valve rod is coaxially connected with, the valve comprises a valve body, a pointer sleeve, an adjusting rod, a sliding element, a valve core cavity, a pointer sleeve and a valve core, wherein the pointer sleeve is provided with a pointer extending outwards in the radial direction, the top of the external thread sleeve is an expanding section, an annular groove is formed between the inner wall of the external thread sleeve and the top of the adjusting rod, valve sealing surfaces matched with each other are arranged at the bottom of the adjusting sliding block and the outlet of the top of a water inlet channel of the valve core cavity so as to allow a secondary turn-off medium flow to be set through flow, the lower part of the sliding element is provided with an inner concave upper spring mounting seat, the upper part of the adjusting sliding block is provided with an inner concave lower spring mounting seat, a spiral spring used as a return spring is arranged between the sliding element.
2. The adjustable dynamic balancing valve of claim 1, wherein the peripheral edge of the sealing member is secured to the top port of the valve spool.
3. The adjustable dynamic balance valve of claim 2, wherein an annular groove is formed on an outer side surface of an upper portion of the sliding member, an edge portion of the stem hole of the sealing member is fitted into the annular groove of the sliding member, and an internal thread which is threadedly coupled with an external thread section of a lower portion of the stem is formed at a lower portion of the central through hole of the adjusting slider, thereby achieving the threaded coupling of the stem and the adjusting slider.
4. The adjustable dynamic balance valve of claim 3 wherein said coil spring is sleeved on said valve stem and has an upper end mounted on said upper spring mount and a lower end mounted on said lower spring mount.
5. The adjustable dynamic balance valve according to any one of claims 1 to 4, wherein the adjusting slider is located above the top outlet of the valve core cavity water inlet channel, and cooperates with the top outlet of the valve core cavity water inlet channel to form a flow setting pair capable of manually setting and adjusting flow.
6. The adjustable dynamic balance valve of claim 5, wherein the valve stem is tubular, the pipe hole of the valve stem forms the valve stem hole, the upper port of the valve stem hole forms the valve stem hole water outlet, the lower port of the valve stem hole forms the valve stem hole water inlet, the bottom of the valve core is provided with a cylindrical annular boss extending upwards, the central through hole of the annular boss penetrates through the bottom of the valve core and is communicated with the valve water inlet through a connecting channel, the lower end of the valve stem extends into the annular boss, the bottom diameter of the adjusting slide block is not smaller than the outer diameter of the annular boss, the central through hole of the annular boss is used as the valve core cavity water inlet channel, and the flow set value is adjusted by adjusting the distance between the adjusting slide block and the annular boss.
7. The adjustable dynamic balance valve of claim 6, wherein said valve inlet and said valve outlet are located on the upper and lower sides of said valve cavity sealing ring, respectively.
8. The adjustable dynamic balance valve according to claim 7, wherein a cylindrical scale cover is fixedly mounted on the upper cover, a vertically elongated pointer through hole is formed in a side wall of the scale cover, the pointer is inserted into the pointer through hole, and an outer end of the pointer is located outside the pointer through hole or inside the pointer through hole.
9. The adjustable dynamic balance valve of claim 8, wherein a blanking cap is fastened to the annular groove between the top of the external threaded sleeve and the top of the adjusting rod, the top of the adjusting rod is located in the blanking cap, and the height of the top end of the scale cap is not lower than the height of the top end of the external threaded sleeve.
10. The adjustable dynamic balance valve of claim 9, wherein the valve body further comprises a flow setting secondary inlet side measuring port and a flow setting secondary outlet side measuring port, the flow setting secondary inlet side measuring port is connected to the valve inlet or the valve core cavity inlet channel, the flow setting secondary outlet side measuring port is connected to the valve core cavity or the valve outlet, and an inner wall of each measuring port is provided with an internal thread for installing a measuring port cover or a measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443515.2A CN107191645B (en) | 2017-06-13 | 2017-06-13 | Adjustable dynamic balance valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443515.2A CN107191645B (en) | 2017-06-13 | 2017-06-13 | Adjustable dynamic balance valve |
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| CN107191645A CN107191645A (en) | 2017-09-22 |
| CN107191645B true CN107191645B (en) | 2020-01-17 |
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| CN201710443515.2A Active CN107191645B (en) | 2017-06-13 | 2017-06-13 | Adjustable dynamic balance valve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108468815B (en) * | 2018-06-22 | 2024-01-23 | 余姚市永创电磁阀有限公司 | Regulating valve capable of linearly changing flow area and assembling method thereof |
| CN109555883B (en) * | 2018-07-09 | 2020-10-23 | 北京艾迪西暖通科技有限公司 | Electric adjustable dynamic balance valve |
| CN109976393B (en) * | 2019-04-24 | 2024-03-08 | 王燕春 | Liquid level difference regulating and controlling device |
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2017
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