CN201013642Y - Piston type fluid-control valve used for self-sucking pump - Google Patents
Piston type fluid-control valve used for self-sucking pump Download PDFInfo
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- CN201013642Y CN201013642Y CNU200720067489XU CN200720067489U CN201013642Y CN 201013642 Y CN201013642 Y CN 201013642Y CN U200720067489X U CNU200720067489X U CN U200720067489XU CN 200720067489 U CN200720067489 U CN 200720067489U CN 201013642 Y CN201013642 Y CN 201013642Y
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- priming pump
- hydraulic control
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Abstract
The utility model relates to a self-priming water pump, in particular to a backflow preventing device of self-priming pump. A piston type hydraulic control valve for self-priming pump includes a valve seat, a valve cover and a piston; the valve cover is arranged at the upper part of the valve seat. The piston type hydraulic control valve for self-priming pump is characterized in that the piston is arrange in the valve seat and separates the hydraulic control valve into an upper part and a lower part; the upper part is a pressure relief valve and the lower part is a master valve; the top of the valve cover of the pressure relief valve is opened with a discharge through hole B; the upper part of the side wall of the valve cover is opened with the through hole A; the top of a push rod is provided with a valve plate; a spring is arranged between the valve plate and the valve cover; the valve plate is provided with a gasket; the gasket matches with the discharge through hole B; the middle part at the bottom of the valve seat of the master valve is in convex cylinder shape and is opened with the through hole; the bottom D of the through hole is communicated with a suction pipe connecting the self-priming pump; the top P of the through hole matches with the bottom of the piston; a master spring is arrange between the piston and the valve seat; the bottom of the valve seat is opened with a ventilation through hole E; the lower part of the push rod is fixed and connected to the upper part of the piston. The utility model has simple structure and is convenient in use and maintenance, and thus the whole service life of the self-priming pump is extended.
Description
(1) technical field
The utility model relates to self prime pump, relates in particular to the water generates that prevents after the self-priming pump termination of pumping in the pump and flows backwards and the anti-backflow device of configuration.
(2) background technique
A kind of self-priming pump that cries is arranged in the existing water pump, and its working principle is: suction pipe 1 is stretched in the pond 32 li, and purpose is that the water with lower is drawn into eminence, at suction pipe 1 the highest position a solenoid valve 3 is housed, referring to Fig. 1; When solenoid valve 3 when electric, electromagnet 13 with inhale iron pan 14 adhesives, referring to Fig. 3, inhale iron pan 14 overcomes spring 15 by the spool 16 that links to each other with it elastic force F
SMove down, the valve port K portion closure on the taper 17 that makes spool 16 bottoms and the valve seat 10, just not conducting between hole a and hole b two holes like this, so the suction pipe 1 of pump is just and atmospheric isolation, water pump 31 1 turns round and will produce siphon.After the solenoid valve dead electricity, electromagnet 13 will separate with suction iron pan 14, and referring to Fig. 4, spool 16 is by the elastic force F of spring 15
SNaturally move upward.Solenoid valve 3 is to move with the running of motor, because of the power supply of electromagnetic valve coil 13 is to come from the terminal box of motor, so as long as motor one, the coil 13 of solenoid valve also must, solenoid valve 3 just produces corresponding action, thereby the switching of control tapered valve finally realizes the logical and obstructed of suction pipe 1 and atmosphere.Promptly in the time of turn on pump 31, require suction pipe 1 can not with the atmosphere conducting, make in pump and the suction pipe 1 by the running of pump earlier and produce vacuum, suction pipe 1 in, form siphon then, thereby the pond 32 interior water that will be lower than water pump are drawn into automatically in the pump; When the water in the pond to stopping automatically after the low liquid level, this moment suction pipe 1 again must with the atmosphere conducting, purpose is not allow water suck-back in the pump in termination of pumping in the pond, guarantees that the water in the pump is in full water state all the time, so that create conditions for turn on pump next time.This is because for the first time before the turn on pump, must be full of water in the pump, thereby if not both formed vacuum water is not drawn up, again because the interior dry friction of pump causes the damage of component.
The characteristics of self-priming pump are: random strong, easy for installation, need not fix, but with regard to water pump the long period non-maintaining, durable in use.But shortcoming is: frequent with the solenoid valve that self-priming pump is supporting owing to pump startup, and cause the coil of solenoid valve and the electronic component in the valve to damage especially easily, make entire pump short working life, can't continue to use.
(3) summary of the invention
The purpose of this utility model is to provide a kind of piston type hydraulic control valve that is used for self-priming pump, and this piston type hydraulic control valve adopts mechanical structure, and is simple in structure, and working service is convenient, thereby whole self-priming pump is prolonged working life.
The utility model is achieved in that a kind of piston type hydraulic control valve that is used for self-priming pump, comprise valve seat, valve gap, valve gap is installed in valve seat top, it is characterized in that: described piston type hydraulic control valve also comprises piston, piston places in the valve seat and hydraulic control valve to be divided into two-part up and down, upper half part is a Decompression valves, and lower half portion is a main valve; First half Decompression valves comprises valve gap, valve block, sealing gasket, push rod, spring, in the middle of the valve gap top underside is projection, have sluicing through hole B on the projection, the valve gap lower sidewall has through hole A, valve block is equipped with at the push rod top, between valve block and valve gap top underside spring is housed, sealing gasket is housed on the valve block, sealing gasket matches with the sluicing through hole B bottom at valve gap top; The Lower Half main valve comprises valve seat, piston, main spring, valve seat is the convex cylindrical shell in the middle of the bottom, have through hole on the convex cylindrical shell, via bottoms D is connected with the suction pipe that is connected self-priming pump, the via top P piston base interior with placing valve seat matches, between piston base and valve seat bottom inner face main spring is housed, the valve seat bottom has several ventilation through holes E along convex cylindrical shell periphery; First half Decompression valves is to be connected by push rod with being connected of Lower Half main valve, fixedlys connected with piston top in the push rod bottom; The cavity that forms between bonnet lower sidewall, valve block bottom, piston top constitutes water storage cavity.
Described valve seat, valve gap inner face are cylindrical shape, between piston side and valve seat side wall inner surface seal ring are housed.
Described valve block is circular, has the guiding gutter that several are divided equally on the valve block circumference.
Described push rod is the T font, and the head of T font is cross.
The bottom center of described piston is a circular cone, and circular cone matches with the via top of valve seat bottom convex cylindrical shell.
The through hole A of described valve gap lower sidewall connects the outer pipe of self-priming pump through PRESSURE PIPE; On PRESSURE PIPE, be connected in series y-type filter; Separating valve is equipped with in front and back at y-type filter, connects a bypass valve in the bypass of y-type filter.
The utility model adopts the piston type hydraulic control valve of mechanical structure to replace solenoid valve, simple, durable in use, easy to maintenance, the low cost of piston type hydraulic control valve arrangement, be not easy to produce aging and tired and cause losing efficacy, thereby can reduce the buying expense of spare part and the maintenance expense of equipment greatly, guarantee the continuity and the reliability of producing, and the utility model also can be applicable to the self-priming pump of other liquid form.
(4) description of drawings
Fig. 1 is the working principle and the structural representation of self-priming pump;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is a kind of working state schematic representation of solenoid valve in the existing self-priming pump;
Fig. 4 is the another kind of working state schematic representation of solenoid valve in the existing self-priming pump;
Fig. 5 is the structural representation of the utility model piston type hydraulic control valve;
Fig. 6 is the structural representation of a kind of working state (pressure is arranged in the water storage cavity) of piston type hydraulic control valve;
Fig. 7 is the structural representation of the another kind of working state (stress-free moment in the water storage cavity) of piston type hydraulic control valve.
Fig. 8 is the structural representation of push rod in the piston type hydraulic control valve;
Fig. 9 is the worm's eye view of Fig. 8;
Figure 10 is the structural representation of piston type hydraulic control valve middle valve plate;
Figure 11 is the plan view of Figure 10.
Among the figure: 1 suction pipe, 2 " Y " filter, 3 solenoid valves (hydraulic control valve), 4 hand-holes, 5 stop valves, 6 pressure gauges, 7 safety check, 8 PRESSURE PIPE, 9 outer pipes, 10 solenoid valve valve seats, 11 solenoid valve cases, 12 coil braces, 13 inhale iron coil, and 14 inhale iron pan, 15 solenoid valve springs, 16 valve core of the electromagnetic valve, 17 solenoid valve tapers, 18 joints, 19 main springs, 20 valve seats, 21 sealing gaskets, 22 bolts, 23 nuts, 24 valve gaps, 25 springs, 26 rubber pads, 27 valve blocks, 28 push rods, 29 " O " type circle, 30 pistons, 31 self-priming pumps, 32 ponds.A valve gap lower sidewall through hole, B valve gap top spilled water hole, D valve seat through-hole bottom, P valve seat through-hole top, E valve seat bottom air vent, guiding gutter on the C valve block.
(5) embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 5, Fig. 2, a kind of piston type hydraulic control valve that is used for self-priming pump, comprise valve seat 20, valve gap 24, piston 30, valve gap 24 is installed in valve seat 20 tops by bolt 22 nuts 23 and sealing gasket 21, piston 30 places in the valve seat 20 and hydraulic control valve to be divided into two-part up and down, upper half part is a Decompression valves, and lower half portion is a main valve.First half Decompression valves is the leading type Decompression valves, and its effect is need open when main valve, when piston 30 moves upward, the water of the water storage cavity on piston 30 tops is carried out pressure release; Lower Half is a main valve, be used for controlling self-priming pump 31 suction pipe 1 whether with the atmosphere conducting.Valve seat 20, valve gap 24 inner faces are cylindrical shape, between piston 30 sides and valve seat 20 side wall inner surface " O " RunddichtringO 29 are housed.
First half Decompression valves comprises valve gap 24, valve block 27, sealing gasket 26, push rod 28, spring 25, is projection in the middle of valve gap 24 top underside, has sluicing through hole B on the projection, and valve gap 24 lower sidewall have through hole A; Valve block 27 is equipped with at push rod 28 tops, and push rod 28 is the T font, and the head of T font and valve block 27 joints are cross, referring to Fig. 8, Fig. 9; Valve block 27 is circular, has the guiding gutter C that several are divided equally on valve block 27 circumference, referring to Figure 10, Figure 11, is six as guiding gutter C; Between valve block 27 and valve gap 24 top underside spring 25 is housed, downwards with valve block 27 tops; Sealing gasket 26 is housed on the valve block 27, and sealing gasket 26 is a rubber gasket, and sealing gasket 26 matches with the sluicing through hole B bottom valve port at valve gap 24 tops.
The Lower Half main valve comprises valve seat 20, piston 30, main spring 19, in the middle of valve seat 20 bottoms is the convex cylindrical shell, have through hole on the convex cylindrical shell, via bottoms D is connected with the suction pipe 1 that is connected self-priming pump 31, and via top P matches with piston 30 bottoms in placing valve seat 20; Piston 30 bottom center are circular cone, and circular cone matches with the via top P of valve seat 20 bottom convex cylindrical shells; Between piston 30 bottoms and valve seat 20 bottom inner faces main spring 19 is housed, main spring 19 is held piston 30; Evenly have several ventilation through holes E along convex cylindrical shell periphery in valve seat 20 bottoms;
First half Decompression valves is to be connected by push rod 28 with being connected of Lower Half main valve, fixedlys connected with piston 30 tops in push rod 28 bottoms.
The cavity that forms between valve gap 24 lower sides, valve block 27 bottoms, piston 30 tops constitutes water storage cavity.Water storage cavity connects self-priming pump outer pipe 9 by valve gap 24 lower sidewall through hole A through PRESSURE PIPE 8, referring to Fig. 2, and serial connection y-type filter 2 on PRESSURE PIPE 8; Separating valve is equipped with in front and back at y-type filter 2, connects a bypass valve in the bypass of y-type filter 2.
The working principle of piston type hydraulic control valve that the utility model is used for self-priming pump is as follows:
When self-priming pump 31 did not also get into smooth, the piston 30 top water storage cavities of the outer pipe 9 on the pump 31, PRESSURE PIPE 8, hydraulic control valve 3 the insides did not have pressure, referring to Fig. 2; Piston 30 is under the effect of main spring 19 so, make piston 30 be in upper end position, drive the push rod 28 that links together with piston 30 simultaneously, overcome the elastic force of the spring 25 on hydraulic control valve 3 first half Decompression valvess, valve block 27 is up pushed away, because spring 19 elastic force on the hydraulic control valve 3 Lower Half main valves than big many of 25 elastic force of the spring on the first half Decompression valves, therefore make hydraulic control valve 3 first half Decompression valvess be in buttoned-up status, referring to Fig. 5.
After self-priming pump 31 installs, before putting into operation for the first time, at first must liquid (water) be filled it up with at liquid hand-hole 4, this is the necessary condition of self-priming pump 31 runnings.
After in case self-priming pump 31 gets into smooth, because the effect of impeller, liquid (water) in the pump 31 will the deflector direction on pump case flow to outer pipe 9, at this moment will produce certain pressure in the outlet port of pump 31, but this moment is owing to the liquid (water) in the suction pipe 1 can't be introduced in the pump 31 to come for the moment at once, so the flow on the outer pipe 9 is not enough, so safety check 7 just can't be opened, because the condition that safety check 7 is opened must satisfy two requirements, that is: one is that certain pressure will be arranged, the 2nd, certain flow be arranged.The liquid (water) that this moment, this strand had a certain pressure enters in the water storage cavity of hydraulic control valve 3 through PRESSURE PIPE 8 and by valve gap 24 lower sidewall through hole A, thereby the elastic force that promotes piston 30 and overcome main spring 19 moves downward, then the valve seat through-hole top P in the valve seat 20 is closed, referring to Fig. 6, just not conducting between valve seat through-hole bottom D and the valve seat bottom air vent E like this, valve seat through-hole bottom D connects suction pipe 1, so that the suction pipe 1 and the atmospheric isolation of self-priming pump 31, and can produce siphon, at this moment a large amount of water just can continuously be sucked in the self-priming pump 31, be sent to the outlet port by impeller again, make the outlet pressure of self-priming pump 31, flow is bigger, finally reaches the rating value of pump.At this moment the pressure that acts on piston 30 tops also increases thereupon, presses it tighter so P place, valve seat through-hole top is fixed in the circular cone of piston 30 bottoms under the pressure effect of piston 30 upper liquids (water), seals more reliable.Because push rod 28 connects together with piston 30, push rod 28 little by little leaves the valve block 27 on top along with moving down of piston 30, but valve block 27 still can be in the position at valve gap 24 tops, because push rod 28 is the T font, the head of T font is not a full circle, but " a ten " font, push rod 28 is connected with " ten " font that is connected to of valve block 27, referring to Fig. 8, Fig. 9.So valve block 27 and piston 30 are the pressure that is subjected to liquid (water) simultaneously, this strand pressure will act on the valve block 27 all the time uniformly.Therefore, though head has the push rod 28 of " ten " font leave valve block 27 after, the leading type Decompression valves of hydraulic control valve 3 first halves also can be in the state of closing.
In a single day receiving instruction when self-priming pump 31 shuts down, pressure moment in the pump and on the outer pipe 9 can trend towards zero, so at this moment the pressure on piston 30 tops also will also trend towards zero along with the pressure of PRESSURE PIPE 8, at this moment piston 30 is under the effect of main spring 19, will produce the trend that moves upward, but because the water of piston 30 epicoeles also can't be got rid of for the moment at this moment, referring to Fig. 6, therefore can only lean on the spring 25 of first half Decompression valves earlier valve block 27 to be opened, because on the circumference of valve block 27, opened the guiding gutter C of six five equilibriums, referring to Figure 10, Figure 11; When spring 25 during at downward overhead-valve sheet 27, what the water below the valve block 27 can be very natural flows to above the valve block 27.Elastic force by spring 25, add valve block 27 from gravity, make valve block 27 to move down, till the head of running into push rod 28 " ten " fonts, referring to Fig. 7, the sealed mouth of the leading type Decompression valves of the first half is opened at this moment, because piston 30, push rod 28 has had the leeway that moves upward, so under the effect of main spring 19, up move rapidly, at this moment just very fast draining outward of that a part of water in valve block 27 epicoeles along spilled water hole B, again be pressed onto up to the sealing gasket on the valve block 27 26 till the valve port of spilled water hole B, at this moment the circular cone on the piston 30 of Lower Half main valve also just leaves via top P, make via bottoms D and valve seat 20 bottom air vent E conductings, vent E is evenly distributed with eight through holes along valve seat 20 bottom circumference, and at this moment Wai Mian atmosphere just can promptly enter in the suction pipe 1 by these eight vent E, thereby destroys the degree of vacuum in the suction pipe 1, force it no longer to produce siphon, thereby make the water in the self-priming pump 31 be unlikely to flow back in the pond 32.
Turn on pump-termination of pumping like this-turn on pump-termination of pumping more again, the operation that moves in circles.
Referring to Fig. 2, " Y " type filter 2 has been installed on the PRESSURE PIPE 8, its objective is in order to ensure the turbidity test that enter water quality in the hydraulic control valve 3, otherwise can stop up on the valve block 27 guiding gutter C or hinder moving up and down of valve block 27 and piston 30.Simultaneously in order to guarantee the unimpeded of " Y " type filter 2, must be regular or irregular " Y " type filter 2 is taken apart clean, so corresponding separating valve will be arranged in the front and back of " Y " type filter 2; In order to guarantee in process to 2 dismounting of " Y " type filter, the pressure of hydraulic control valve 3 the insides continues to remain unchanged, a bypass valve must be arranged again, like this, in case will clean " Y " type filter 2, as long as earlier bypass valve is opened, and then is closed the separating valve of " Y " type filter 2 front and back, so just can not influence the normal operation of self-priming pump 31.
Simple, durable in use, easy to maintenance, the low cost of the utility model piston type hydraulic control valve arrangement can reduce the buying expense of spare part and the maintenance expense of equipment greatly, guarantees the continuity and the reliability of producing, and can be applicable to the self-priming pump of other liquid form.
Claims (8)
1. a piston type hydraulic control valve that is used for self-priming pump comprises valve seat, valve gap, and valve gap is installed in valve seat top,
It is characterized in that: described piston type hydraulic control valve also comprises piston, and piston places in the valve seat hydraulic control valve is divided into two-part up and down, and upper half part is a Decompression valves, and lower half portion is a main valve;
First half Decompression valves comprises valve gap, valve block, sealing gasket, push rod, spring, in the middle of the valve gap top underside is projection, have sluicing through hole B on the projection, the valve gap lower sidewall has through hole A, valve block is equipped with at the push rod top, between valve block and valve gap top underside spring is housed, sealing gasket is housed on the valve block, sealing gasket matches with the sluicing through hole B bottom at valve gap top;
The Lower Half main valve comprises valve seat, piston, main spring, valve seat is the convex cylindrical shell in the middle of the bottom, have through hole on the convex cylindrical shell, via bottoms D is connected with the suction pipe that is connected self-priming pump, the via top P piston base interior with placing valve seat matches, between piston base and valve seat bottom inner face main spring is housed, the valve seat bottom has several ventilation through holes E along convex cylindrical shell periphery;
First half Decompression valves is to be connected by push rod with being connected of Lower Half main valve, fixedlys connected with piston top in the push rod bottom;
The cavity that forms between bonnet lower sidewall, valve block bottom, piston top constitutes water storage cavity.
2. the piston type hydraulic control valve that is used for self-priming pump according to claim 1, it is characterized in that: valve seat, valve gap inner face are cylindrical shape, between piston side and valve seat side wall inner surface seal ring are housed.
3. the piston type hydraulic control valve that is used for self-priming pump according to claim 1 and 2 is characterized in that: valve block has the guiding gutter that several are divided equally for circular on the valve block circumference.
4. the piston type hydraulic control valve that is used for self-priming pump according to claim 1 and 2, it is characterized in that: push rod is the T font, the head of T font is cross.
5. the piston type hydraulic control valve that is used for self-priming pump according to claim 1 and 2, it is characterized in that: the bottom center of piston is a circular cone, circular cone matches with the via top of valve seat bottom convex cylindrical shell.
6. the piston type hydraulic control valve that is used for self-priming pump according to claim 1 and 2 is characterized in that: the through hole A of described valve gap lower sidewall connects the outer pipe of self-priming pump through PRESSURE PIPE.
7. the piston type hydraulic control valve that is used for self-priming pump according to claim 6 is characterized in that: be connected in series y-type filter on PRESSURE PIPE.
8. the piston type hydraulic control valve that is used for self-priming pump according to claim 7, it is characterized in that: separating valve is equipped with in the front and back at y-type filter, connects a bypass valve in the bypass of y-type filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720067489XU CN201013642Y (en) | 2007-02-26 | 2007-02-26 | Piston type fluid-control valve used for self-sucking pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720067489XU CN201013642Y (en) | 2007-02-26 | 2007-02-26 | Piston type fluid-control valve used for self-sucking pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013642Y true CN201013642Y (en) | 2008-01-30 |
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ID=39025430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720067489XU Expired - Fee Related CN201013642Y (en) | 2007-02-26 | 2007-02-26 | Piston type fluid-control valve used for self-sucking pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013642Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN110397599A (en) * | 2019-07-19 | 2019-11-01 | 江苏大学 | A kind of self-priming starter applied to centrifugal pump |
| CN111255753A (en) * | 2020-02-03 | 2020-06-09 | 海南广源隆节能环保股份有限公司 | Siphon pump |
-
2007
- 2007-02-26 CN CNU200720067489XU patent/CN201013642Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN103195735B (en) * | 2013-04-17 | 2015-05-20 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN110397599A (en) * | 2019-07-19 | 2019-11-01 | 江苏大学 | A kind of self-priming starter applied to centrifugal pump |
| CN110397599B (en) * | 2019-07-19 | 2020-09-25 | 江苏大学 | Be applied to self-priming starting drive of centrifugal pump |
| CN111255753A (en) * | 2020-02-03 | 2020-06-09 | 海南广源隆节能环保股份有限公司 | Siphon pump |
| CN111255753B (en) * | 2020-02-03 | 2022-03-22 | 海南广源隆节能环保股份有限公司 | Siphon pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20160226 |