CN103195735B - Internal reflux valve for self-priming pump - Google Patents
Internal reflux valve for self-priming pump Download PDFInfo
- Publication number
- CN103195735B CN103195735B CN201310131792.1A CN201310131792A CN103195735B CN 103195735 B CN103195735 B CN 103195735B CN 201310131792 A CN201310131792 A CN 201310131792A CN 103195735 B CN103195735 B CN 103195735B
- Authority
- CN
- China
- Prior art keywords
- valve
- self
- priming pump
- valve plug
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Check Valves (AREA)
Abstract
The invention discloses an internal reflux valve for a self-priming pump. The internal reflux valve comprises a valve plug, a spring, a sealing ring, a casing, a valve body, a gasket, a limit lug, an ejection rod and a valve bonnet. A taper shoulder is arranged on a radial outer wall of a blind end of the valve plug, and the sealing ring is nested in the taper shoulder. The casing is axially fixedly connected to the middle of the inner end face of the valve plug, the spring and the gasket are embedded in the casing, and the limit lug is arranged at the other end of the casing. A through hole on the upper left portion of the valve body faces a reflux hole matched with a water outlet cavity of the self-priming pump, coaxial extending pipes are respectively arranged on two sides of the bottom of the valve body, an external shoulder thread is arranged in the right extending pipe, the left extending pipe faces a matched connector of a water inlet cavity of the self-priming pump, and the orifice of each extending pipe is a taper hole and form a valve control structure with the matched valve plug. The valve bonnet is screwed on the right extending pipe of the valve body to form a helical axial adjusting structure, and the valve bonnet is screwed to drive the ejection rod, the gasket and the spring to set axial thrust resistance of the valve plug 1. The internal reflux valve automatically controls on and off of reflux water by controlling the valve plug by pressure, and operating efficiency of the self-priming pump is greatly improved.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of reflux valve being placed in return port place in self-priming pump, this valve is controlled to open or close by pump internal pressure automatically.
Background technique
Common self-priming pump has to pass through original annotation water circulation and the gas-liquid separation process of a period of time when starting, the return port in pump is original annotation water circulation channel.The built-in return port of self-priming pump of prior art is through hole, after self-priming pump realizes self-priming, water chamber is in malleation, water-inlet cavity is in negative pressure, and water chamber has part water from return port, to flow back to water-inlet cavity under the effect of the pressure, and the invalid shunting of this part water directly reduces the way.In order to remove the problem of the built-in return port of self-priming pump still unimpeded shunting after self-priming, the industry settles reflux valve to be a kind of effectively technical measures at return port.At present, the reflux valve be applied in engineering mainly contains two kinds of typical structures, and a kind of is the reflux valve of manual ball valve structure, and another kind is the reflux valve of float cut-off valve arrangement.Although front a kind of reflux valve structure is simple, it is tight to close, switch freely, but first manual unlocking all wanted by each self-priming pump that starts, manual-lock again after self-priming to be achieved, the reflux valve of this structure is except very important person is on duty, can't telecontrol be realized, not meet the supporting requirement of modern ships.The reflux valve of stop valve structure can realize switch with the pressure difference of water chamber and water-inlet cavity automatically when self-priming pump runs, and the spool of this type of reflux valve adopts the rubber material manufacture with spring-back force, to meet the requirement dynamic with pressure.Because rubber material is easily aging, manufacturing process is complicated, and reliability is not high, leakage problem in aging rear easy generation.
Summary of the invention
The present invention is mainly for the deficiencies in the prior art, a kind of self-priming pump internal reflux valve by the pressure difference automatic control switch between water chamber and water-inlet cavity is proposed, this valve arrangement is simple, easy for installation, is active in one's movements, reliably, completely, meets remote control technology condition.
The present invention is achieved through the following technical solutions technical goal.
Reflux valve provided for oneself by self-priming pump, and it comprises valve plug, spring, seal ring, sleeve pipe, valve body, pad, position-limiting ear, push rod and valve gap.Its improvements are: described valve plug is blind pipe structure, and uniform 2 ~ 4 windows on tube wall, cecum radial outer wall is tapering shoulder, and seal ring is embedded in the groove of tapering shoulder.Described sleeve pipe is straight tube, and one end axial restraint is connected in the middle part of valve plug interior edge face, lays spring and pad successively in sleeve pipe, and sleeve pipe right-hand member is provided with position-limiting ear for axial limiting.Described valve body is a kind of three-way body, be positioned at the return port of through hole in the face of supporting self-priming pump water chamber on left surface top, two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put in projecting tube and is established shoulder peripheral hardware screw thread, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole forms valve control structure with the valve plug matched.Described valve gap is fixedly connected with push rod, and the projecting tube that valve gap is spun on valve body right flank forms spiral axial adjustment structure, changes by increase and decrease pad quantity the ability that amount of spring compression sets the anti-end thrust of valve plug.
In said structure, the window on valve plug tube wall is rectangle, and edge of window starts from cecum interior edge face, and the window gross area equals valve plug inner hole section and amasss.Spring is pressure spring.
The present invention compared with prior art, has following good effect:
1, utilize the pressure difference control valve plug action of supporting self-priming pump water chamber and water-inlet cavity, valve plug is mobile composition stop valve structure in valve body, and pressure actuation structure is simple, flexible movements, and sealing is tight;
2, use pressure controlled reflux valve, do not need manually on duty, meet remote control technology condition;
3, there is no invalid backflow in pump, improve operational efficiency.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is embodiment's schematic diagram that Fig. 1 is arranged in self-priming pump.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Reflux valve provided for oneself by self-priming pump shown in Fig. 1, and it comprises valve plug 1, spring 2, seal ring 3, sleeve pipe 4, valve body 5, pad 6, position-limiting ear 7, push rod 8 and valve gap 9.The pipe that described valve plug 1 blocks for one end, uniform two rectangular windows 1.1 as shown in Figure 2 on the tube wall of this kind of blind pipe component, window 1.1 gross area equals valve plug 1 inner hole section and amasss.The cecum radial outer wall of valve plug 1 is tapering shoulder, and seal ring 3 is embedded in the groove of tapering shoulder.Described sleeve pipe 4 is straight tube, and one end axial restraint is connected in the middle part of valve plug 1 interior edge face, lays pressure spring 2 and pad 6 in sleeve pipe 4 successively, and sleeve pipe 4 right-hand member is provided with position-limiting ear 7 for axial limiting, the not slippage from valve body 5 of restriction valve plug 1.Described valve body 5 is a kind of threeway rectangular case, be positioned at the return port of through hole in the face of supporting self-priming pump water chamber on left surface top, two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put in projecting tube and is established shoulder peripheral hardware screw thread, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole forms with the valve plug 1 matched the valve control structure often opened.Described valve gap 9 disposed thread hole and the push rod 8 be fixedly connected with, the projecting tube that valve gap 9 is spun on valve body 5 right flank forms spiral axial adjustment structure, changes by increase and decrease pad 6 ability that spring 2 decrement sets the anti-end thrust of valve plug 1.Self-priming pump lift supporting in the present embodiment is 35m, and the axial adjustment position of push rod 8 just determined by built-in three pads 6, then screws the position that valve gap 9 sets valve plug 1 final plant closure.
Fig. 3 is embodiment's schematic diagram that the present invention is installed in supporting self-priming pump, first in self-priming pump, water is injected before first time starts, start up period to pump pressure in water cavity less, its power acted on valve plug 1 is less than pressure spring 2 tension force, now valve plug 1 and valve body 5 are in and often open shape, current enter valve body 5 from the window 1.1 of valve plug 1, pump water cavity and communicate with water-inlet cavity.The water section that pump impeller exports is back to water-inlet cavity, again enter impeller after mixing with water inlet chamber air and be output to water chamber, through iterative cycles and the synchronous gas-liquid separation of a period of time, impel self-priming pump water-inlet cavity form negative pressure and be full of water, after now self-priming pump realizes self-priming, water chamber pressure is set up rapidly.Exceeding the value of the anti-end thrust of setting valve plug 1 when pumping pressure in water cavity, on the left of valve plug 1 indentation valve body 5 in projecting tube, being formed and being sealed and matched by valve plug 1 radial outer wall and valve body 5 oral area tapered hole, blocking return flow line.During running well at self-priming pump, there is no invalid backflow, greatly improve the operational efficiency of pump.
Window 1.1 quantity in the present invention on valve plug 1 tube wall is determined according to specification, does not exceed at most 4, and window 1.1 gross area equals valve plug 1 inner hole section and amasss, and its effect is similar with above-described embodiment.Window 1.1 quantity is too much unsuitable, otherwise can reduce the structural strength of valve plug 1 and the quality that is slidably matched.
Claims (3)
1. a self-priming pump internal reflux valve, it comprises valve plug (1), spring (2), seal ring (3), sleeve pipe (4), valve body (5), pad (6), position-limiting ear (7), push rod (8) and valve gap (9); It is characterized in that: described valve plug (1) is blind pipe structure, uniform 2 ~ 4 windows (1.1) on tube wall, cecum radial outer wall is tapering shoulder, and seal ring (3) is embedded in the groove of tapering shoulder; Described sleeve pipe (4) is straight tube, and one end axial restraint is connected in the middle part of valve plug (1) interior edge face, lays spring (2) and pad (6) in sleeve pipe (4) successively, and sleeve pipe (4) right-hand member is provided with position-limiting ear (7) for axial limiting; Described valve body (5) is a kind of three-way body, be positioned at the return port of through hole in the face of supporting self-priming pump water chamber on left surface top, two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put in projecting tube and is established shoulder peripheral hardware screw thread, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole forms valve control structure with the valve plug matched (1); Described valve gap (9) is fixedly connected with push rod (8), and valve gap (9) is spun on valve body (5) right side and puts on projecting tube and form spiral axial adjustment structure, is changed the ability of spring (2) decrement setting valve plug (1) anti-end thrust by increase and decrease pad (6) quantity.
2. self-priming pump internal reflux valve according to claim 1, is characterized in that: the window on described valve plug (1) tube wall is rectangle, and edge of window starts from cecum interior edge face, and the window gross area equals valve plug (1) inner hole section and amasss.
3. self-priming pump internal reflux valve according to claim 1, is characterized in that: described spring (2) is pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310131792.1A CN103195735B (en) | 2013-04-17 | 2013-04-17 | Internal reflux valve for self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310131792.1A CN103195735B (en) | 2013-04-17 | 2013-04-17 | Internal reflux valve for self-priming pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195735A CN103195735A (en) | 2013-07-10 |
| CN103195735B true CN103195735B (en) | 2015-05-20 |
Family
ID=48718476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310131792.1A Active CN103195735B (en) | 2013-04-17 | 2013-04-17 | Internal reflux valve for self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195735B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697205A (en) * | 2013-12-27 | 2014-04-02 | 安徽埃斯克制泵有限公司 | Automatic exhaust valve for outlet of self-priming pump |
| CN105756946B (en) * | 2014-12-19 | 2019-05-31 | 格兰富控股联合股份公司 | A kind of self priming pump |
| CN109958804B (en) * | 2017-12-26 | 2024-01-16 | 宁波方太厨具有限公司 | Proportional pressure stabilizing valve |
| CN117386631B (en) * | 2023-11-22 | 2024-03-08 | 济南宏林天怡实业有限公司 | Fire pump with intelligent automatic detection function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB635021A (en) * | 1941-01-24 | 1950-03-29 | Futs Metalliques Gallay S A | Improvements in telescopic valve devices for liquid containers |
| GB1191429A (en) * | 1967-10-19 | 1970-05-13 | Zahnradfabrik Friedrichshafen | Hydraulic Devices for Controlling Pressure Build-Up in a Clutch or Brake. |
| CN201013642Y (en) * | 2007-02-26 | 2008-01-30 | 宝山钢铁股份有限公司 | Piston type fluid-control valve used for self-sucking pump |
| CN101644272A (en) * | 2009-07-20 | 2010-02-10 | 江苏大学 | Fast self-priming jet-type centrifugal pump |
| CN102221095A (en) * | 2010-04-15 | 2011-10-19 | 王欢欢 | Valve device |
| CN102720676A (en) * | 2012-06-08 | 2012-10-10 | 李冬庆 | Pressure valve and suction nozzle linkage self-priming device for self-priming pump |
| CN203189821U (en) * | 2013-04-17 | 2013-09-11 | 江苏振华泵业制造有限公司 | Internally-installed return valve of self-priming pump |
-
2013
- 2013-04-17 CN CN201310131792.1A patent/CN103195735B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB635021A (en) * | 1941-01-24 | 1950-03-29 | Futs Metalliques Gallay S A | Improvements in telescopic valve devices for liquid containers |
| GB1191429A (en) * | 1967-10-19 | 1970-05-13 | Zahnradfabrik Friedrichshafen | Hydraulic Devices for Controlling Pressure Build-Up in a Clutch or Brake. |
| CN201013642Y (en) * | 2007-02-26 | 2008-01-30 | 宝山钢铁股份有限公司 | Piston type fluid-control valve used for self-sucking pump |
| CN101644272A (en) * | 2009-07-20 | 2010-02-10 | 江苏大学 | Fast self-priming jet-type centrifugal pump |
| CN102221095A (en) * | 2010-04-15 | 2011-10-19 | 王欢欢 | Valve device |
| CN102720676A (en) * | 2012-06-08 | 2012-10-10 | 李冬庆 | Pressure valve and suction nozzle linkage self-priming device for self-priming pump |
| CN203189821U (en) * | 2013-04-17 | 2013-09-11 | 江苏振华泵业制造有限公司 | Internally-installed return valve of self-priming pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195735A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103195735B (en) | Internal reflux valve for self-priming pump | |
| WO2017101547A1 (en) | Electronic expansion valve and spool thereof | |
| CN204372248U (en) | A kind of straight-through type back pressure relief valve | |
| CN205401290U (en) | Energy storage ware return circuit is with guide's off -load overflow valve | |
| CN103141363B (en) | Preset pressure-adjustable capillary pressure adjuster | |
| CN202901385U (en) | Stop valve with drain valve | |
| CN206429721U (en) | A kind of pressure limiting permanent flow valve | |
| CN203189821U (en) | Internally-installed return valve of self-priming pump | |
| CN102966775B (en) | Direct-current piston type emergency shutoff valve and application thereof | |
| CN202604578U (en) | Valve structure for coffee machine with adjustable backwater | |
| CN203730860U (en) | Check valve for flow regulation | |
| CN204592401U (en) | A kind of electric water mixing valve of water heater | |
| CN209100711U (en) | A kind of non-return valve | |
| CN203585471U (en) | Direct flow piston type guide adjustable reducing valve | |
| CN202955283U (en) | Thermostatic faucet | |
| CN219102106U (en) | High-sealing tap | |
| CN201448447U (en) | Water-gas control linkage valve for gas heater | |
| CN107906246B (en) | Water-saving flushing valve and method for producing a stop element in a water-saving flushing valve | |
| CN201273377Y (en) | Gas valve | |
| CN202972085U (en) | Direct-flow piston type emergency shutoff valve | |
| CN202691189U (en) | Pressure-adjusting mechanism for engine | |
| CN203309234U (en) | Gas water heater safety valve | |
| CN206723494U (en) | Right angle ball valve | |
| CN203035529U (en) | Booster pump and water purification machine system comprising booster pump | |
| CN218954191U (en) | Water-break protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 225500 No. 9, Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou, Jiangsu Patentee after: Jiangsu Zhenhua pump Limited by Share Ltd Address before: 225500 No. 9, Jiangyan Avenue, Jiangyan District, Jiangsu, Taizhou Patentee before: Jiangsu Zhenhua Pump Industry Manufacturing Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 225500 Jiangyan Avenue No. 9, Jiangyan District, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Pump Manufacturing Co., Ltd.) Patentee after: Jiangsu Zhenhua Pump Industry Manufacturing Co., Ltd. Address before: 225500 Jiangyan Avenue No. 9, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province Patentee before: Jiangsu Zhenhua pump Limited by Share Ltd |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.9 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Haike Equipment Technology Co., Ltd.) Patentee after: Jiangsu Zhenhua Haike Equipment Technology Co., Ltd Address before: 225500 Jiangsu Zhenhua Pump Manufacturing Co., Ltd., Jiangyan Road, Jiangyan District, Jiangsu, Taizhou 9 Patentee before: JIANGSU ZHENHUA PUMP MANUFACTURING Co.,Ltd. |