CN111779849A - Novel butterfly type intelligent pumping automatic control valve - Google Patents

Novel butterfly type intelligent pumping automatic control valve Download PDF

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Publication number
CN111779849A
CN111779849A CN202010787481.0A CN202010787481A CN111779849A CN 111779849 A CN111779849 A CN 111779849A CN 202010787481 A CN202010787481 A CN 202010787481A CN 111779849 A CN111779849 A CN 111779849A
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CN
China
Prior art keywords
inlet
water
piston cylinder
pilot valve
cavity
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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
CN202010787481.0A
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Chinese (zh)
Inventor
洪荣坤
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.)
Tianjin Tanggu No1 Valve Co ltd
Original Assignee
Tianjin Tanggu No1 Valve Co ltd
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Publication date
Application filed by Tianjin Tanggu No1 Valve Co ltd filed Critical Tianjin Tanggu No1 Valve Co ltd
Priority to CN202010787481.0A priority Critical patent/CN111779849A/en
Publication of CN111779849A publication Critical patent/CN111779849A/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
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

Abstract

The invention provides a novel butterfly type intelligent pumping automatic control valve which is characterized by comprising a valve body, a butterfly plate, a valve rod and a piston cylinder; the valve body is provided with a water inlet end and a water outlet end, and a piston rod of the piston cylinder is connected with the valve rod and the butterfly plate through a rocker arm; the piston cylinder is provided with a piston cylinder upper cavity inlet and a piston cylinder lower cavity inlet, the piston cylinder upper cavity inlet and the piston cylinder lower cavity inlet are respectively connected with an intelligent control system pilot valve, the two intelligent control system pilot valves are respectively connected with a water inlet end and a water outlet end in opposite directions, and the change of water inlet and pressure relief of the piston cylinder upper cavity and the piston cylinder lower cavity is controlled according to the change of pressure difference of the water inlet end and the water outlet end, so that the piston rod is driven to move. The invention ensures that the water loss is small when the valve operates so as to achieve the energy-saving effect; the effects of preventing counter flow and weakening water hammer pressure are achieved; the body is light, the equipment cost is reduced, and meanwhile, the installation is convenient and the sealing effect is good; stable operation, safety, stability, reliability, wear resistance and long service life.

Description

Novel butterfly type intelligent pumping automatic control valve
Technical Field
The invention belongs to the field of valves, and particularly relates to a novel butterfly type intelligent pumping automatic control valve.
Background
A water pump control valve is needed at an outlet of a pressurizing water delivery pump of an industrial and urban water supply and drainage pipeline or a high-rise residence and the like, but the water pump control valve in the prior art can generate large water loss when the valve operates, and water pressure impact force is difficult to clear up when the pump stops flowing backwards, so that destructive water hammer is easily generated.
Disclosure of Invention
The invention provides a novel butterfly intelligent pumping self-control valve which is small in water loss and capable of eliminating the generation of destructive water hammer peak values.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a novel butterfly intelligent pumping automatic control valve comprises a valve body, a butterfly plate, a valve rod and a piston cylinder; the valve body is provided with a water inlet end and a water outlet end, and a piston rod of the piston cylinder is connected with the valve rod and the butterfly plate through a rocker arm; the piston cylinder is provided with a piston cylinder upper cavity inlet and a piston cylinder lower cavity inlet, the piston cylinder upper cavity inlet and the piston cylinder lower cavity inlet are respectively connected with an intelligent control system pilot valve, the two intelligent control system pilot valves are respectively connected with a water inlet end and a water outlet end in opposite directions, and the water inlet and pressure relief changes of the piston cylinder upper cavity and the piston cylinder lower cavity are controlled according to the pressure difference change of the water inlet end and the water outlet end, namely when one intelligent control system pilot valve controls the water inlet of the piston cylinder upper cavity or the piston cylinder lower cavity, the other intelligent control system pilot valve controls the pressure relief of the piston cylinder lower cavity or the piston cylinder upper cavity, so that the piston rod is driven to move, and when the piston rod moves, the rocker arm drives the valve rod and.
Furthermore, the pilot valve of the intelligent control system comprises a pilot valve body and a pilot valve core, and the pilot valve core is positioned in a cavity of the pilot valve body; a first inlet is arranged at one end of the pilot valve body, a second inlet is arranged at the other end of the pilot valve body, and a first outlet and a second outlet which respectively face to the two sides are arranged in the middle of the pilot valve body; the cavity of the pilot valve body is divided into a first inlet cavity corresponding to the first inlet, a second inlet cavity corresponding to the second inlet and a sealing cavity between the first inlet cavity and the second inlet cavity, and the length of the first inlet cavity is longer than that of the second inlet cavity;
the pilot valve core comprises a sealing section positioned in the sealing cavity, a first matching section and a second matching section, wherein the two sides of the sealing section are matched with the first inlet; the diameter of the sealing section is larger than the inner diameter of the first inlet cavity and the inner diameter of the second inlet cavity, the diameter of the first matching section is smaller than the inner diameter of the first inlet cavity, and the diameter of the second matching section is smaller than the inner diameter of the second inlet cavity; the first outlet is positioned on the pilot valve body corresponding to the first matching section, the second outlet is positioned on the pilot valve body corresponding to the sealing section at the other side, and a sealing element is arranged at one end, far away from the sealing section, of the first matching section. The sealing section moves left and right along with the water pressure difference between the first inlet and the second inlet, and the second inlet is communicated with the second outlet when the first inlet cavity is sealed; when the second inlet cavity is sealed, the first outlet is communicated with the second outlet.
Furthermore, sealing parts are also installed on two sides of the sealing section, and the first outlet is located between the sealing part of the sealing section on one side of the first matching section and the sealing part of one end, far away from the sealing section, of the first matching section.
Still further, the one end that first cooperation section is close to the seal segment, the one end of keeping away from the seal segment and the one end that second cooperation section is close to the seal segment are equipped with the seal groove respectively, install in the seal groove.
Preferably, the sealing member is an O-ring.
Furthermore, the intelligent control system pilot valve connected with the lower cavity inlet of the piston cylinder is a first intelligent control system pilot valve, a first inlet of the first intelligent control system pilot valve is connected with the water outlet end, a second inlet of the first intelligent control system pilot valve is connected with the water inlet end, a first outlet of the first intelligent control system pilot valve is connected with a water pump inlet or a water pool, and a second outlet of the first intelligent control system pilot valve is connected with the lower cavity inlet of.
Still further, a first outlet of the pilot valve of the first intelligent control system is provided with two parallel pipelines, one pipeline is provided with a travel switch, and the other pipeline is provided with a flow regulating valve.
Furthermore, the intelligent control system pilot valve connected with the inlet of the upper cavity of the piston cylinder is a second intelligent control system pilot valve, the first inlet of the second intelligent control system pilot valve is connected with the water inlet end, the second inlet of the second intelligent control system pilot valve is connected with the water outlet end, the first outlet of the second intelligent control system pilot valve is connected with the inlet of the water pump or the water pool, and the second outlet of the second intelligent control system pilot valve is connected with.
Furthermore, a water inlet end water intake is arranged at the water inlet end of the valve body, a water outlet end water intake is arranged at the water outlet end, and each intelligent control system pilot valve is respectively connected with the water inlet end water intake and the water outlet end water intake through a pipeline.
Furthermore, ball valves are arranged on each pipeline of each intelligent control system pilot valve respectively connected with the water intake port at the water inlet end and the water intake port at the water outlet end.
Compared with the prior art, the invention has the following beneficial effects:
(1) when the butterfly valve is opened, the piston rod is controlled by the intelligent control system pilot valve to push the rocker arm, so that the valve rod and the butterfly plate are driven to be opened with assistance, and the small water loss is ensured during the operation of the valve, thereby achieving the energy-saving effect;
(2) when the butterfly valve is closed when the water flow stops, the piston rod is controlled by the pilot valve of the intelligent control system to push the rocker arm, so that the valve rod and the butterfly plate are driven to be quickly closed, the butterfly plate is slowly closed by the control of the travel switch and the flow regulating valve at the later stage of the closing process, and the butterfly plate is closed by two steps of quick closing and slow closing, so that the effects of preventing counter flow and weakening the pressure of a water hammer are achieved;
(3) the invention has light body, reduces the equipment cost, is convenient to install and has good sealing effect; the device has the advantages of stable operation, no vibration, no noise, safety, stability, reliability, wear resistance and long service life.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
fig. 2 is a schematic diagram of a pilot valve structure of the intelligent control system according to the embodiment of the invention.
Wherein:
1. a valve body; 2. a water inlet end; 3. a water outlet end; 4. a piston cylinder; 5. an inlet of an upper cavity of the piston cylinder;
6. an inlet of a lower cavity of the piston cylinder; 7. a water intake at the water inlet end; 8. a water outlet end water intake;
9. a first intelligent control system pilot valve; 10. a second intelligent control system pilot valve; 11. a travel switch;
12. a flow regulating valve; 13. controlling the butterfly plate to close the pressure relief pipeline; 14. controlling the butterfly plate to close the pressure relief pipeline quickly;
15. controlling the butterfly plate to slowly close the pressure relief pipeline; 16. controlling the butterfly plate to open the resistance reducing power-assisted pipeline;
17. controlling the butterfly plate to open the resistance-reducing pressure-releasing pipeline; 18. controlling the butterfly plate to close the boosting pipeline; 19. a ball valve;
20. a first inlet; 21. a second inlet; 22. a first outlet; 23. a second outlet; 24. a pilot valve body;
25. a sealing section; 26. a first mating segment; 27. a second mating segment; 28. a first inlet chamber;
29. a second inlet chamber; 30. sealing the cavity; 31. a seal member; 32. a rocker arm; 33. a butterfly plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The novel butterfly intelligent pumping self-control valve provided by the invention is mainly formed by a valve body 1, a butterfly plate 33, a valve rod, a piston cylinder 4, an intelligent control system pilot valve, a flow regulating valve 13, a travel switch 12, a ball valve 19, a control pipeline and the like.
As shown in fig. 1, the valve body 1 is provided with a water inlet end 2 and a water outlet end 3, the water inlet end 2 is provided with a water inlet end water intake 7, and the water outlet end 3 is provided with a water outlet end water intake 8; a piston rod of the piston cylinder 4 is connected with the valve rod and the butterfly plate 33 through a rocker arm 32; the piston cylinder 4 is provided with a piston cylinder upper cavity inlet 5 and a piston cylinder lower cavity inlet 6, the piston cylinder upper cavity inlet 5 is connected with a first intelligent control system pilot valve 9, the piston cylinder lower cavity inlet 6 is connected with a second intelligent control system pilot valve 10, and the first intelligent control system pilot valve 9 and the second intelligent control system pilot valve 10 are respectively connected with the water inlet end 2 and the water outlet end 3 in opposite directions.
The first intelligent control system pilot valve 9 and the second intelligent control system pilot valve 10 are the same in structure, and as shown in fig. 2, the structure of the intelligent control system pilot valve comprises a pilot valve body 24 and a pilot valve core, and the pilot valve core is positioned in a cavity of the pilot valve body 24; the left end of the pilot valve body 24 is provided with a first inlet 20, the right end is provided with a second inlet 21, and the middle part is provided with a first outlet 22 facing downwards and a second outlet 23 facing upwards; the cavity of the pilot valve body 24 is divided into a first inlet chamber 28 corresponding to the first inlet 20, a second inlet chamber 29 corresponding to the second inlet 21', and a sealed chamber 30 between the first inlet chamber 28 and the second inlet chamber 29, said first inlet chamber 28 being longer in length than the second inlet chamber 29;
the pilot valve spool comprises a sealing section 25 positioned in a sealing cavity 30, a first matching section 26 connected to the left side of the sealing section 25 and matched with the first inlet, and a second matching section 27 connected to the right side of the sealing section 25 and matched with the second inlet, wherein the first matching section 26 is longer than the second matching section 27; the diameter of the sealing section 25 is greater than the inner diameter of the first inlet chamber 28 and the inner diameter of the second inlet chamber 29, the diameter of the first matching section 26 is less than the inner diameter of the first inlet chamber 28, and the diameter of the second matching section 27 is less than the inner diameter of the second inlet chamber 29; a sealing groove is formed in one end, away from the sealing section 25, of the first matching section 26, and a sealing element 31 is installed on the end; sealing grooves are respectively arranged at two sides of the sealing section 25, namely one end of the first matching section 26 close to the sealing section 25 and one end of the second matching section 27 close to the sealing section 25, and sealing elements 31 are arranged in the sealing grooves; the seal 31 is an O-ring in this embodiment.
The first outlet 22 is located below the pilot valve body 24 at a position corresponding to the portion between the seals at the two ends of the first mating section 26 and the second outlet 23 is located above the pilot valve body 24 at a position corresponding to the seal section 25.
The intelligent control system pilot valve can move left and right the sealing section 25 along with the water pressure difference of the first inlet 20 and the second inlet 21, when the sealing section 25 seals the first inlet cavity 28, the second inlet 21 and the second outlet 23 are conducted; when seal section 25 seals second inlet chamber 29, first outlet 22 and second outlet 23 are in communication.
When the intelligent control system pilot valve is used as the first intelligent control system pilot valve 9 and the second intelligent control system pilot valve 10 in the invention, as shown in fig. 1, a first inlet 20 of the first intelligent control system pilot valve 9 is connected with a water outlet end water intake 8 of the water outlet end 3 through a pipeline, a ball valve 19 is arranged on the pipeline, a second inlet 21 is connected with a water inlet end water intake 7 of the water inlet end 2 through a pipeline, and the pipeline is provided with the ball valve 19; the second outlet 23 is connected with the piston cylinder lower cavity inlet 6 through a butterfly plate opening resistance-reducing power-assisting pipeline 16; the first outlet 22 is connected with a water pump inlet or a water pool through a control butterfly plate closing pressure relief pipeline 13, the butterfly plate closing pressure relief pipeline 13 is divided into a control butterfly plate quick closing pressure relief pipeline 14 and a control butterfly plate slow closing pressure relief pipeline 15 which are connected in parallel, a travel switch 11 is arranged on the control butterfly plate quick closing pressure relief pipeline 14, and the control butterfly plate slow closing pressure relief pipeline 15 is provided with a flow regulating valve 12.
The connection direction of the second intelligent control system pilot valve 10 is opposite to that of the first intelligent control system pilot valve 9, as shown in fig. 1, a first inlet 20 of the second intelligent control system pilot valve is connected with a water inlet end water intake 7 of the water inlet end 2 through a pipeline, a ball valve 19 is arranged on the pipeline, a second inlet 21 of the second intelligent control system pilot valve is connected with a water outlet end water intake 8 of the water outlet end 3 through a pipeline, and the pipeline is provided with the ball valve 19; the second outlet 23 is connected with the inlet 5 of the upper cavity of the piston cylinder through a butterfly plate closing boosting pipeline 18; the first outlet 22 is connected with a water pump inlet or a water tank through controlling the butterfly plate to open the resistance-reducing pressure-relieving pipeline 17.
When the butterfly plate type water-saving valve works, the butterfly plate 33 is automatically opened to enable a medium to pass through under the action of a flow speed water head of the medium at the water inlet end 2. Meanwhile, the pressure water at the two ends of the valve body 1 respectively flows to the two ends of the guide valve of the intelligent control system through respective pipelines and ball valves, the first guide valve 9 of the intelligent control system moves leftwards to seal the first inlet cavity 28 under the action that the pressure of the water inlet end 2 of the valve is greater than the pressure of the water outlet end 3, and the second inlet 21 is communicated with the second outlet 23; pressure water at the water inlet end 2 sequentially passes through the second outlet 23, the control butterfly plate opening resistance-reducing power-assisting pipeline 16 and the piston cylinder lower cavity inlet 6 to enter the piston cylinder lower cavity; under the action that the pressure of the water inlet end 2 of the valve is higher than the pressure of the water outlet end 3, a sealing section 25 of the pilot valve 10 of the second intelligent control system moves leftwards to seal a second inlet cavity 29, a first outlet 22 of the pilot valve is communicated with a second outlet 23 of the pilot valve, and pressure water in the upper cavity of the piston cylinder sequentially passes through an inlet 5 of the upper cavity of the piston cylinder, a control butterfly plate closing boosting pipeline 18, the second outlet 23, the first outlet 22 and a control butterfly plate opening resistance-reducing pressure-releasing pipeline 17 to enter an inlet of a water pump or a water pool for pressure release; at the moment, the piston rod is pushed out from the cavity of the piston cylinder 4 to push the rocker arm 32 on the piston rod to drive the valve rod of the valve and the butterfly plate 33 to be opened with the assistance of force, so that the water loss is small during the operation of the valve, and the energy-saving effect is achieved.
When the water flow stops (for example, the water pump stops running suddenly), the butterfly plate 33 is automatically closed due to the self weight of the butterfly plate 33 and the action of the reverse flow water. Meanwhile, the pressure water at the two ends of the valve body 1 respectively flows to the two ends of the pilot valve of the intelligent control system through respective pipelines and ball valves, the sealing section 25 of the pilot valve 10 of the second intelligent control system is moved right to seal the first inlet cavity 28 under the action that the pressure of the water outlet end 3 of the valve is higher than that of the water inlet end 2, and the second inlet 21 is communicated with the second outlet 23; pressure water at the water outlet end 3 sequentially passes through the second outlet 23, the butterfly plate closing assisting pipeline 18 and the piston cylinder upper cavity inlet 5 to enter the upper cavity of the piston cylinder; under the action that the pressure of the water outlet end 3 of the valve is higher than that of the water inlet end 2 of the valve, the sealing section 25 of the device moves right to seal the second inlet cavity 29, the first outlet 22 and the second outlet 23 of the device are communicated, the pressure water in the lower cavity of the piston cylinder passes through the inlet 6 of the lower cavity of the piston cylinder, the control butterfly plate opening resistance-reducing boosting pipeline 16, the second outlet 23, the first outlet 22 and the control butterfly plate closing pressure-relief pipeline 13 to enter the inlet of the water pump or a water pool for pressure relief, the butterfly plate closing pressure relief pipeline 13 is divided into a control butterfly plate quick-closing pressure relief pipeline 14 and a control butterfly plate slow-closing pressure relief pipeline 15 which are connected in parallel, a travel switch 11 is arranged on the control butterfly plate quick-closing pressure relief pipeline 14, a flow regulating valve 12 is arranged on the control butterfly plate slow-closing pressure relief pipeline 15, the travel switch is closed at the stage, and pressure water mainly enters a water pump inlet or a water pool from the control butterfly plate quick-closing pressure relief pipeline 14 for pressure relief; at the moment, the piston rod retracts rapidly, the rocker 32 on the piston rod is pulled, and the valve rod of the valve and the butterfly plate 33 are driven to close rapidly; when the butterfly plate 33 is closed 85% quickly, the travel switch 11 is started to close the butterfly plate quick-closing pressure relief pipeline 14, and the butterfly plate slow-closing pressure relief pipeline 13 passes through the flow regulating valve, so that the butterfly plate 33 is closed slowly, and the water hammer pressure is weakened.
The flow regulating valve 12 can accurately control the flow of the pressure released by the lower cavity of the piston cylinder, namely control the slow closing time of the butterfly plate 33 according to the arrival time of a water hammer peak, the size of a generated water hammer, the inversion speed of the water pump and the like. This time can be adjusted arbitrarily from zero to 60 seconds.
As mentioned above, the closing of the butterfly plate 33 is divided into two steps of rapid and slow closing, achieving both the effect of preventing the reverse flow and the effect of reducing the water hammer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A novel butterfly type intelligent pumping automatic control valve is characterized by comprising a valve body, a butterfly plate, a valve rod and a piston cylinder; the valve body is provided with a water inlet end and a water outlet end, and a piston rod of the piston cylinder is connected with the valve rod and the butterfly plate through a rocker arm; the piston cylinder is provided with a piston cylinder upper cavity inlet and a piston cylinder lower cavity inlet, the piston cylinder upper cavity inlet and the piston cylinder lower cavity inlet are respectively connected with an intelligent control system pilot valve, the two intelligent control system pilot valves are respectively connected with a water inlet end and a water outlet end in opposite directions, and the change of water inlet and pressure relief of the piston cylinder upper cavity and the piston cylinder lower cavity is controlled according to the change of pressure difference of the water inlet end and the water outlet end, so that the piston rod is driven to move.
2. The novel butterfly intelligent pumping automatic control valve as claimed in claim 1, wherein the intelligent control system pilot valve comprises a pilot valve body and a pilot valve core, the pilot valve core is positioned in a cavity of the pilot valve body; a first inlet is arranged at one end of the pilot valve body, a second inlet is arranged at the other end of the pilot valve body, and a first outlet and a second outlet which respectively face to the two sides are arranged in the middle of the pilot valve body; the cavity of the pilot valve body is divided into a first inlet cavity corresponding to the first inlet, a second inlet cavity corresponding to the second inlet and a sealing cavity between the first inlet cavity and the second inlet cavity, and the length of the first inlet cavity is longer than that of the second inlet cavity;
the pilot valve core comprises a sealing section positioned in the sealing cavity, a first matching section and a second matching section, wherein the two sides of the sealing section are matched with the first inlet; the diameter of the sealing section is larger than the inner diameter of the first inlet cavity and the inner diameter of the second inlet cavity, the diameter of the first matching section is smaller than the inner diameter of the first inlet cavity, and the diameter of the second matching section is smaller than the inner diameter of the second inlet cavity; the first outlet is positioned on the pilot valve body corresponding to the first matching section, the second outlet is positioned on the pilot valve body corresponding to the sealing section at the other side, and a sealing element is arranged at one end, far away from the sealing section, of the first matching section.
3. A novel butterfly intelligent pumping automatic control valve according to claim 2, characterized in that sealing elements are also installed on two sides of the sealing section, and the first outlet is located between the sealing element on the side of the sealing section at the first matching section and the sealing element on the end of the first matching section far away from the sealing section.
4. A novel butterfly intelligent pumping automatic control valve according to claim 3, characterized in that one end of the first fitting section close to the sealing section, one end of the second fitting section far from the sealing section, and one end of the second fitting section close to the sealing section are respectively provided with a sealing groove, and the first fitting section, the second fitting section and the third fitting section are installed in the sealing grooves.
5. The novel butterfly intelligent pump automatic control valve of claim 4, characterized in that the sealing element is an O-ring.
6. A novel butterfly intelligent pumping automatic control valve according to claim 2, characterized in that the intelligent control system pilot valve connected with the piston cylinder lower cavity inlet is a first intelligent control system pilot valve, the first inlet of which is connected with the water outlet end, the second inlet of which is connected with the water inlet end, the first outlet of which is connected with the water pump inlet or the water pool, and the second outlet of which is connected with the piston cylinder lower cavity inlet.
7. A novel butterfly intelligent pumping automatic control valve as claimed in claim 6, wherein the first outlet of the pilot valve of the first intelligent control system is provided with two parallel pipelines, one is provided with a travel switch, and the other is provided with a flow regulating valve.
8. A novel butterfly intelligent pumping automatic control valve according to claim 2, characterized in that the intelligent control system pilot valve connected to the inlet of the upper chamber of the piston cylinder is a second intelligent control system pilot valve, the first inlet of which is connected to the water inlet end, the second inlet of which is connected to the water outlet end, the first outlet of which is connected to the inlet of the water pump or the water pool, and the second outlet of which is connected to the inlet of the lower chamber of the piston cylinder.
9. A novel butterfly intelligent pumping automatic control valve according to claim 1, wherein the water inlet end of the valve body is provided with a water inlet end water intake, the water outlet end is provided with a water outlet end water intake, and each intelligent control system pilot valve is respectively connected with the water inlet end water intake and the water outlet end water intake through a pipeline.
10. A novel butterfly intelligent pumping automatic control valve according to claim 9, characterized in that ball valves are arranged on the pipelines respectively connecting the water intake port of the water inlet end and the water intake port of the water outlet end of each intelligent control system pilot valve.
CN202010787481.0A 2020-08-07 2020-08-07 Novel butterfly type intelligent pumping automatic control valve Pending CN111779849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010787481.0A CN111779849A (en) 2020-08-07 2020-08-07 Novel butterfly type intelligent pumping automatic control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010787481.0A CN111779849A (en) 2020-08-07 2020-08-07 Novel butterfly type intelligent pumping automatic control valve

Publications (1)

Publication Number Publication Date
CN111779849A true CN111779849A (en) 2020-10-16

Family

ID=72765289

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010787481.0A Pending CN111779849A (en) 2020-08-07 2020-08-07 Novel butterfly type intelligent pumping automatic control valve

Country Status (1)

Country Link
CN (1) CN111779849A (en)

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