CN202417966U - Pneumatic energy-saving piston balancing water pump control valve - Google Patents
Pneumatic energy-saving piston balancing water pump control valve Download PDFInfo
- Publication number
- CN202417966U CN202417966U CN2012200075979U CN201220007597U CN202417966U CN 202417966 U CN202417966 U CN 202417966U CN 2012200075979 U CN2012200075979 U CN 2012200075979U CN 201220007597 U CN201220007597 U CN 201220007597U CN 202417966 U CN202417966 U CN 202417966U
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- valve
- water pump
- sleeve
- lower cover
- control valve
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Abstract
The utility model discloses a pneumatic energy-saving piston balancing water pump control valve which comprises a valve body, a lower gland, a lower sealing ring, a lower valve seat, a valve cover, a valve shaft and a device for controlling axial telescopic movement of the valve shaft, wherein the valve cover is covered on the valve body, and a section of cover body of the valve cover extends into the valve body; the valve shaft is movably inserted into the valve cover from the outside; the lower gland is arranged in the valve body and arranged at the tail end of the valve shaft; the lower valve seat is arranged on a passage in the inner cavity of the valve body; the lower sealing ring is arranged on the outer circumference of the bottom of the lower gland; a sleeve is movably and glidingly sleeved on the valve cover; the sleeve is matched and sealed with the cover body of the valve cover; one end of the sleeve is hermetically connected together with the lower gland; and the lower gland is provided with a through hole penetrating a runner and the inner cavity of the sleeve. The pneumatic energy-saving piston balancing water pump control valve disclosed by the utility model has the advantages that the resistance is very low when the valve is opened and closed, so the valve can be opened and closed with a small force, and energy required for opening and closing the valve is saved; and the lower gland plays a role in diversion, so that vortex in a dome cavity below the lower gland is prevented, and pressure loss of fluid due to the vortex is avoided.
Description
Technical field:
The utility model relates to a kind of air-driven type energy-saving piston balanced type control valve for water pump.
Background technique:
In the fluid pipe network of water supply and sewerage system; The valve that the roadability of Centrifugal water pump requires to switch off the pump behind the water outlet realizes that zero delivery starts; The maximum inversion speed of water pump must not be greater than 1.2 times of water pump rated speed during termination of pumping; The time that surpasses rated speed must not be more than 2min, and the startup of water pump and must not stop and causing impact of water hammer to pipe-line system.In order to realize above-mentioned three requirements, common situation is to adopt the valve that is called " control valve for water pump " at the water outlet place of water pump.Existing control valve for water pump structure is as shown in Figure 1; It is made up of the extension member 04 of valve body 01, valve gap 02, valve seat 03 and a similar inverted T-shaped, and inverted T-shaped extension member 04 bottom is provided with lower cover 05 again, and lower cover bottom circumferential edges is provided with seal ring 06; Valve seat 03 is located in the valve body 01; When closing, inverted T-shaped extension member 04 is pressed to valve seat 03, and the seal ring 06 on lower cover 05 is pushed down valve seat 03.The control valve for water pump of this structure is when opening, because the existence of inverted T-shaped moulding, when causing opening; Inverted T-shaped extension member 04 receives very big downforce resistance; And when closing, the pressure that produces in the time of can receiving the water pump driving fluid hinders, and closes also to overcome huge resistance; So no matter be to open or close, all very power consumptions.When this control valve for water pump is closed; At a slow speed requirement after can not realizing is earlier fast closed and can be caused producing water hammer too soon, closes to cause medium to flow backwards too slowly; The maximum inversion speed of water pump is greater than 1.2 times of the water pump rated speed when causing termination of pumping, and the time that surpasses rated speed is more than 2min.And the flow resistance of this control valve for water pump is big, and the pressure loss is big, and existing control valve for water pump is because structural imperfection; The intensity of its body of rod is little, and the inverted T-shaped extension member has only two states, or opens fully; Close fully, can not on its movement locus, arbitrarily stop, can not realize Flow-rate adjustment.In addition when the front and back of control valve for water pump do not have pressure difference, or pressure difference is when too small, and valve can not be closed.
Summary of the invention:
The purpose of the utility model is in order to overcome the shortcoming of above-mentioned existing technology, provide that a kind of keying resistance is little, fluid through the time pressure loss little, the air-driven type energy-saving piston balanced type control valve for water pump of energy-conserving and environment-protective.
The goal of the invention of the utility model can realize through following technological scheme: air-driven type energy-saving piston balanced type control valve for water pump; Include valve body, lower cover, the device of lower seal, lower valve base, valve gap, valve shaft and the motion of control valve shaft axial stretching, valve gap is placed on the valve body and valve gap puts in one section lid in valve body; Valve shaft is from outer movable the reeve in the valve gap; Lower cover is installed in the valve body and is arranged on the end of valve shaft, and lower valve base is installed on the passage of body cavity, and lower seal is located on the excircle of lower cover bottom; Movable sliding sleeve has sleeve on valve gap; Sleeve and valve gap lid fitted seal, an end and the lower cover of sleeve are tightly connected together, on lower cover, are provided with the through hole that connects runner and barrel bore.
The device that control valve shaft axle is made fore and aft motion is a pneumatic linear actuator, and pneumatic linear actuator is installed on the valve gap, and the main piston and the valve shaft of pneumatic linear actuator are fixed together, and the chamber of main piston both sides is connected with atmospheric control respectively in the pneumatic linear actuator cylinder body.
Be extended with damper piston at main piston towards a side of valve body, correspondingly on valve body one end wall body, be provided with the reaming section that supplies damper piston to inject at the pneumatic linear actuator cylinder body.
Be provided with the two-position-five-way solenoid valve of control main piston two side cavity turnover gas in the atmospheric control.
Bottom at lower cover is provided with guide ring.
Compared with prior art; The utlity model has following beneficial effect: the resistance the during keying of valve is very little, thereby only needs the very little power just can switch valve, practices thrift the required energy of switch valve; Energy-conserving and environment-protective; Lower cover plays the effect of water conservancy diversion, prevents generation eddy current in the vault chamber of lower cover below, avoids causing fluid pressure loss because of the existence of eddy current.
Description of drawings:
Fig. 1 is the sectional structure chart of existing technology control valve for water pump;
Fig. 2 is the structural drawing of model utility air-driven type energy-saving piston balanced type control valve for water pump closed condition;
Fig. 3 is the enlarged view of A part among Fig. 2;
Fig. 4 is the enlarged view of B part among Fig. 2;
Fig. 5 is the enlarged view of C part among Fig. 2;
Fig. 6 is the structural drawing of the utility model air-driven type energy-saving piston balanced type control valve for water pump opening state;
Fig. 7 is the enlarged view of D part among Fig. 6;
Fig. 8 is the enlarged view of E part among Fig. 6;
Fig. 9 is the enlarged view of F part among Fig. 6.
Embodiment:
Below in conjunction with accompanying drawing this utility patent is described further.
The energy-conservation main piston balanced type of the air-driven type of present embodiment control valve for water pump includes valve body 1, lower cover 2, the device of lower seal 3, lower valve base 4, valve gap 5, valve shaft 6 and the motion of control valve shaft 6 axial stretchings; Valve gap 5 is placed on the valve body 1 and valve gap 5 puts in one section lid 5a in valve body 1, and valve shaft 6 is from outer movable the reeve in the valve gap 5, and lower cover 2 is installed in the valve body 1 and is arranged on the end of valve shaft 6; Lower valve base 4 is installed on the passage of body cavity, and lower seal 3 is located on the lower cover 2 bottom excircles, and movable sliding sleeve has sleeve 7 on valve gap 5; Sleeve 7 and valve gap 5 lid fitted seal, an end and the lower cover 2 of sleeve 7 are tightly connected together, and the lower cover 2 here can play the effect of water conservancy diversion; Prevent to produce eddy current in the vault chamber, below, avoid causing fluid pressure loss, on sleeve 7, insert on the end outer side wall in the valve gap 5 and be provided with upper valve base 8; The bottom interior wall place of valve gap 5 is provided with seal ring 9, on lower cover 2, is provided with the through hole 10 that connects runner and barrel bore 71, when driving lower cover 2 is pressed to lower valve base 4; Sleeve 7 is along with the motion of lower cover 2 is pulled out in valve gap 5, and fluid can get into barrel bore 71 by via through holes 10, along with pressing down of lower cover 2; Barrel bore 71 volumes progressively increase; Lower seal 3 up to lower cover 2 is pushed down lower valve base 4, and upper valve base 8 is pushed down the last seal ring 9 in the valve gap 5, at this moment; Really playing the mobile parts of barrier fluid is the sidewall of sleeve 7; And lower cover 2 rises and the process that presses down in, the resistance that sleeve 7 sidewalls will overcome is very little, makes the valve opening and closing required drive very little.Be provided with guide ring 11 in the bottom of lower cover 2.
The device that 6 of valve shafts of control are made fore and aft motion is a pneumatic linear actuator 12; Pneumatic linear actuator 12 is installed on the valve gap 5; The main piston 13 and the valve shaft 6 of pneumatic linear actuator 12 are fixed together; The chamber 14,15 of main piston 13 both sides is connected with atmospheric control respectively in pneumatic linear actuator 12 cylinder bodies, is extended with damper piston 16 at main piston 13 towards a side of valve body 1, correspondingly is provided with the reaming section 17 that supplies damper piston 16 reeves at the pneumatic linear actuator cylinder body near valve body 1 one end wall bodies.Atmospheric control is made up of downtake pipe 18, suction tude 19, second exhaust pipe 20, the first aciculiform stop valve 21, the second aciculiform stop valve 22, the 3rd aciculiform stop valve 23, two-position-five-way solenoid valve 24 and one-way valve 25; Downtake pipe 18, suction tude 19, second exhaust pipe 20 are connected an end of two five-way electromagnetic valves 24; The other end of two five-way electromagnetic valves 24 is drawn two-way; Respectively with the pneumatic linear actuator cylinder body in 13 liang of side cavity of main piston 14,15 be connected; Between downtake pipe 18 and two five-way electromagnetic valves 24 the first aciculiform stop valve 21 is set; Between second exhaust pipe 20 and two five-way electromagnetic valves 24 the second aciculiform stop valve 22 is set; Being provided with two pipelines between the bottom of pneumatic linear actuator 12 near the chamber 14 of valve body 1 one sides and reaming section 17 is connected; First pipeline 26 is provided with that the 3rd aciculiform stop valve 23, the second pipelines 27 are connected with two five-way electromagnetic valves 24 and is being provided with one-way valve 25 leading on the pipeline of pneumatic linear actuator 12 near valve body 1 one side cavity 14, and the two-way pipeline here all is in order to make damper piston 16 can realize up-down.
The employing piston type drives; Pressurized air is as driven medium; Also can carry out the opening and closing action when pressure reduction is zero before and after the valve, can do during valve closing earlier fast, two stages closed at a slow speed again; The speed of opening and closing can be adjusted, with the generation that prevents water hammer and water pump reversing speed above requiring.If the piston actuated medium adopts clear water, comparatively speaking, glassware for drinking water has incompressibility, and is just slower relatively to the driving action of piston, do not reach the requirement of quick closedown.And the piston actuated medium adopts pressurized air, because air has compressibility (being elasticity), therefore just can accomplish quick closedown to the driving action of piston.In addition, adopt pressurized air as driven medium, can be free from environmental pollution, do not receive the influence of weather ambient temperature.And water can freeze under cold climate, can influence the proper functioning of control valve for water pump.Owing to adopted external pressurized air as power source; Pressure reduction is very little or also can rely on compressed-air actuated elastic potential energy to carry out the opening and closing action when being zero before and after the valve, thereby be not the constraint that traditional control valve for water pump opening and closing need the front and back pressure difference.Can control lower cover 2 in addition and be in any position in the valve body 1; Thereby play flow regulating function; The Lift that the piston type driving can guarantee valve lower cover 2 is greater than 1/4 of valve nominal size; Be the sectional area of the unlatching Curtain area of lower cover 2, thereby guaranteed the long-pending sectional area of overflow section of valve, reduce the pressure loss of the fluid of the valve of flowing through greater than corresponding nominal size pipeline greater than valve nominal size pipeline.
Valve adopts equilibrium principle; Promptly utilize the effect of sleeve 7, during valve closing, fluid is full of barrel bore 71 through the through hole on the lower cover 2 10; Medium acted on the footpath of sleeve 7 and valve gap 5 and made a concerted effort to equal zero this moment; And act on lower cover 2 upper and lower chambeies make a concerted effort be close to zero, pressure fluid acts on the mutual balance of axial force on the open-shut device, thereby makes the opening and closing power of valve very little; Valve opening required work when closing is very little, only is equivalent to 1/25～1/15 of traditional hydraulic control valve.
The bottom that is employed in open-shut device is provided with lower cover 2 as guide plate, produces the pressure loss that whirlpool causes in the vault chamber of eliminating lower cover 2 belows, improves the anti-cavitation performance of valve.
Adopt short tooth-like guide ring 11 guiding of taking a seat; No any obstacle hinders media flow in the lower valve base 4; It is long or need on lower valve base 4, to establish overarm brace and lead the shortcoming that this mode of structure flow resistance is big, the pressure loss is big with slide-bar to have changed traditional leading truck guiding pin.
Adopt two five-way electromagnetic valves 24 to carry out the switching-over control of piston actuated, realized the interlock control of valve and water pump, during the water pump accident power-off, solenoid valve commutates, and has realized that valve closes automatically, makes valve have check function.
Adopt two main pistons (being cylinder main piston 13 and buffering piston 16) work; Utilize main piston 13 to promote valve shaft 6 at the leading portion of closing; And the back segment of closing increases the motion that many damper pistons 16 are further stablized valve shaft 6 again; Thereby can do when having realized valve closing earlier fast, two stages closed at a slow speed again.And through to the aciculiform stop valve on the pilot line 21,22,23 with adjust, can realize the speed adjustment of valve opening and closing velocity, the requirement of different operating modes when satisfying water pump and opening and closing.Realized the flow regulating function of valve through the control of turnover tolerance in the piston cylinder.
The utility model is novel in design, and structure is ingenious, and is multiple functional; Adopt equilibrium principle, the gas piston formula drives, and compares with the control valve for water pump of existing structure; Required keying steering force is 1/25～1/15 of an existing structure control valve for water pump, and hydraulic loss is very little, is 1/10 of existing control valve for water pump; Have special obvious energy-saving effect,, will obtain excellent economic and social benefit if apply.
The above only is the preferred embodiment of the utility model, is not the utility model is done any pro forma restriction.Any those of ordinary skill in the art; Do not breaking away under the utility model technological scheme scope situation; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to the utility model technological scheme, or are revised as the equivalent embodiment of equivalent variations.So every content that does not break away from the utility model technological scheme, the equivalence of doing according to shape, structure and the principle of the utility model changes, and all should be covered by in the protection domain of the utility model.
Claims (5)
1. air-driven type energy-saving piston balanced type control valve for water pump; Include valve body, lower cover, the device of lower seal, lower valve base, valve gap, valve shaft and the motion of control valve shaft axial stretching, valve gap is placed on the valve body and valve gap puts in one section lid in valve body; Valve shaft is from outer movable the reeve in the valve gap; Lower cover is installed in the valve body and is arranged on the end of valve shaft, and lower valve base is installed on the passage of body cavity, and lower seal is located on the excircle of lower cover bottom; It is characterized in that: movable sliding sleeve has sleeve on valve gap; Sleeve and valve gap lid fitted seal, an end and the lower cover of sleeve are tightly connected together, on lower cover, are provided with the through hole that connects runner and barrel bore.
2. air-driven type energy-saving piston balanced type control valve for water pump according to claim 1; It is characterized in that: the device that control valve shaft axle is made fore and aft motion is a pneumatic linear actuator; Pneumatic linear actuator is installed on the valve gap; The main piston and the valve shaft of pneumatic linear actuator are fixed together, and the chamber of main piston both sides is connected with atmospheric control respectively in the pneumatic linear actuator cylinder body.
3. air-driven type energy-saving piston balanced type control valve for water pump according to claim 2; It is characterized in that: be extended with damper piston at main piston towards a side of valve body, correspondingly on valve body one end wall body, be provided with the reaming section that supplies damper piston to inject at the pneumatic linear actuator cylinder body.
4. air-driven type energy-saving piston balanced type control valve for water pump according to claim 2 is characterized in that: the two-position-five-way solenoid valve that is provided with control main piston two side cavity turnover gas in the atmospheric control.
5. air-driven type energy-saving piston balanced type control valve for water pump according to claim 1, it is characterized in that: the bottom at lower cover is provided with guide ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200075979U CN202417966U (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston balancing water pump control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200075979U CN202417966U (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston balancing water pump control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417966U true CN202417966U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200075979U Expired - Lifetime CN202417966U (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston balancing water pump control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417966U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562616A (en) * | 2012-01-09 | 2012-07-11 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston-balanced water pump control valve |
| CN107309611A (en) * | 2017-06-28 | 2017-11-03 | 泉州市沪航阀门制造有限公司 | A kind of production method of control valve for water pump |
| CN112377154A (en) * | 2020-11-11 | 2021-02-19 | 中石化石油工程技术服务有限公司 | Automatic drainage device utilizing formation gas through magnetic reversing |
| CN113202969A (en) * | 2021-04-16 | 2021-08-03 | 中国长江三峡集团有限公司 | Pneumatic pipe burst safety valve and method |
-
2012
- 2012-01-09 CN CN2012200075979U patent/CN202417966U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562616A (en) * | 2012-01-09 | 2012-07-11 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston-balanced water pump control valve |
| CN102562616B (en) * | 2012-01-09 | 2015-09-02 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston-balanced water pump control valve |
| CN107309611A (en) * | 2017-06-28 | 2017-11-03 | 泉州市沪航阀门制造有限公司 | A kind of production method of control valve for water pump |
| CN112377154A (en) * | 2020-11-11 | 2021-02-19 | 中石化石油工程技术服务有限公司 | Automatic drainage device utilizing formation gas through magnetic reversing |
| CN113202969A (en) * | 2021-04-16 | 2021-08-03 | 中国长江三峡集团有限公司 | Pneumatic pipe burst safety valve and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20150902 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |