CN103452831A - Automatic exhausting valve applied to sinking type pump head applied in metering pump - Google Patents
Automatic exhausting valve applied to sinking type pump head applied in metering pump Download PDFInfo
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- CN103452831A CN103452831A CN2013103659463A CN201310365946A CN103452831A CN 103452831 A CN103452831 A CN 103452831A CN 2013103659463 A CN2013103659463 A CN 2013103659463A CN 201310365946 A CN201310365946 A CN 201310365946A CN 103452831 A CN103452831 A CN 103452831A
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Abstract
The invention relates to an automatic exhausting valve applied to a sinking type pump head applied in a metering pump. The automatic exhausting valve comprises a valve body (1), a back-pressure valve seat (2), an exhausting valve core (3), a small valve seat (4), a valve ball (5), a valve ball baffle (6), a back-pressure spring (8) and a back-pressure valve core (9), wherein the back-pressure valve seat (2) is arranged on the valve body (1); the back-pressure spring (8) and the back-pressure valve core (9) are arranged in the back-pressure valve seat (2); the back-pressure valve core (9) seals the back-pressure valve seat (2) under the acting force of the back-pressure spring (8) and is butted with the exhausting valve core (3) arranged under the back-pressure valve seat; the small valve seat (4) is arranged in the exhausting valve core (3); the valve ball (5) is arranged at the bottom part of the small valve seat (4), and the valve ball baffle (6) is arranged at the bottom part of the valve ball (5). Compared with the prior art, the automatic exhausting valve has the advantages of stable and reliable working, insensitivity to particles, long service life and the like.
Description
Technical field
The present invention relates to a kind of metering pump, especially relate to a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump.
Background technique
Metering pump is a kind ofly can meet various strict technological process needs, flow can be in the 0-100% scope step-less adjustment, be used for carrying a kind of special displacement pump of liquid (particularly corrosive liquids).Metering pump also claims metering pump or dosing pump.Metering pump belongs to reciprocating volumetric pump, for accurate measurement, usually require the steady state accuracy of metering pump to be no more than ± 1%.Along with the development of modernization industry towards automation mechanized operation, this situation of far distance automatic controlling, the matching performance of metering pump is strong, adapt to medium (liquid) widely advantage particularly seem outstanding.
In existing metering pump sinking pump head application, usually contain particle in medium, usually adopt the method for manual exhaust, as manual exhaust has the shortcoming of inconvenient operation, if the gas that pump head is assembled is not discharged in time, can affect the volumetric efficiency of metering pump, the metering pump measuring accuracy is descended, have influence on the technique of whole system.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of working stability reliable in order to overcome the defect that above-mentioned prior art exists, insensitive to particle, the automatic control pressure vent that is applied to sunk type pump head in metering pump of long service life.
Purpose of the present invention can be achieved through the following technical solutions: a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump, it is characterized in that, comprise valve body (1), back pressure valve seat (2), outlet valve spool (3), little valve seat (4), valve ball (5), valve ball baffle plate (6), back pressure spring (8) and back pressure spool (9); Described back pressure valve seat (2) is arranged on valve body (1), described back pressure spring (8) and back pressure spool (9) are arranged in back pressure valve seat (2), back pressure spool (9) is at the active force lower seal back pressure valve seat (2) of back pressure spring (8), and butt is arranged on the outlet valve spool (3) of back pressure valve seat below, be provided with little valve seat (4) in described outlet valve spool (3), described valve ball (5) is arranged on little valve seat (4) bottom, and in valve ball (5) bottom, valve ball baffle plate (6) is set;
Gas in medium concentrates at the space above ball valve (5) by the gap between ball valve (5) and little valve seat (4), when metering pump during at discharge stroke, pump head pressure raises, air above ball valve (5) is compressed, ball valve (5) moves upward under the double reaction plus of pressurized air and media flow, contact and seal little valve seat (4), pressure in pump chamber continues to raise, and promote ball valve (5) and little valve seat (4) moves upward, thereby promoting outlet valve spool (3) moves upward, and finally back down back pressure spool (9), air above ball valve (5) is discharged under the discharge campaign round trip effect of buoyancy and exhaust plug (3), when metering pump during in induction stroke, the pump head pressure decreased, back pressure spool (9) is returned to reset condition under the active force of back pressure spring (8).
Be provided with the little valve seat of reverse pair (4a), secondary valve ball (5a) and secondary valve ball baffle plate (6a) below described little valve seat (4), valve ball (5) and valve ball baffle plate (6), described secondary valve ball baffle plate (6a) is arranged on valve ball baffle plate (6) bottom, the little valve seat of described pair (4a) is arranged under secondary valve ball baffle plate (6a), and described secondary valve ball (5a) is arranged between secondary valve ball baffle plate (6a) and secondary little valve seat (4a).
Be provided with seal ring a (10) between described back pressure valve seat (2) and valve body (1), between described outlet valve spool (3) and valve body (1), be provided with seal ring b (11).
Described back pressure spring (8) one end butt back pressure spools (9), it is upper that the other end is arranged on back pressure adjusting nut (7), adjusts the elastic force of back pressure spring (8) by back pressure adjusting nut (7).
The diameter B of described outlet valve spool (3) is greater than the diameter A of back pressure spool (9).
Compared with prior art, the present invention has mainly solved the automatic vent problem of metering pump sunk type pump head pump head in the slurry application; When pump head does not have gas to assemble, outlet valve is failure to actuate, and when having gas to concentrate at pump head top, under the pressure pulsation effect, outlet valve starts work and gets rid of the air that assemble at top; The pressure pulsation that the present invention measures in pump head by utilization realizes automatic vent, has solved the automatic vent problem in metering pump sinking pump head.This automatic control pressure vent only just can be worked when having gas to exist, and has working stability reliable, insensitive to particle, the advantage of long service life.This outlet valve also can be used as the relief valve in metering pump.
The accompanying drawing explanation
The structural representation that Fig. 1 is automatic control pressure vent of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump, comprise valve body 1, back pressure valve seat 2, outlet valve spool 3, little valve seat 4, valve ball 5, valve ball baffle plate 6, back pressure spring 8 and back pressure spool 9; Described back pressure valve seat 2 is arranged on valve body 1, described back pressure spring 8 and back pressure spool 9 are arranged in back pressure valve seat 2, back pressure spool 9 is at the active force lower seal back pressure valve seat 2 of back pressure spring 8, and butt is arranged on the outlet valve spool 3 of back pressure valve seat below, be provided with little valve seat 4 in described outlet valve spool 3, described valve ball 5 is arranged on little valve seat 4 bottoms, and in valve ball 5 bottoms, valve ball baffle plate 6 is set; Be provided with the little valve seat 4a of reverse pair, secondary valve ball 5a and secondary valve ball baffle plate 6a below described little valve seat 4, valve ball 5 and valve ball baffle plate 6, described secondary valve ball baffle plate 6a is arranged on valve ball baffle plate 6 bottoms, the little valve seat 4a of described pair is arranged under secondary valve ball baffle plate 6a, and described secondary valve ball 5a is arranged between secondary valve ball baffle plate 6a and secondary little valve seat 4a.Be provided with seal ring a10 between described back pressure valve seat 2 and valve body 1, between described outlet valve spool 3 and valve body 1, be provided with seal ring b11, increase sealing effect.Described back pressure spring 8 one end butt back pressure spools 9, the other end is arranged on back pressure adjusting nut 7, adjusts the elastic force of back pressure spring 8 by back pressure adjusting nut 7.
Under reset condition, the pressure of back pressure spool 9 below the pressure lower seal outlet valve of back pressure spring 8, sealing pressure is greater than the maximum service pressure of metering pump, so while in the outlet valve the inside, there is no air, this automatic control pressure vent internal pressure is equal everywhere, and outlet valve is not worked; Between valve ball 5 and little valve seat 4, space is very little; At back pressure spool 9 and 2 sealings of back pressure valve seat and outlet valve spool 3, during at bottom position, between back pressure spool 9 and outlet valve spool 3, gap is very little; The diameter B of described outlet valve spool 3 is greater than the diameter A of back pressure spool 9.
When the γ-ray emission in medium the gap by 4 of ball valve 5 and little valve seats concentrate at the space above ball valve 5, when metering pump during at discharge stroke, pump head pressure raises, air pressure above ball valve 5 is relatively low, compressed trend is arranged, ball valve 5 moves upward under the double reaction plus of pressurized air and media flow, until touch little valve seat (4) stop motion sealing, if at this moment the pressure in pump chamber continues to raise, space pressure above valve ball 5 is constant, produce the stiction between pressure difference F=(pressure above the pressure-valve ball 5 below valve ball 5) * B-outlet valve spool 3 and valve body 1, when F is greater than zero, outlet valve spool 3 moves upward, when outlet valve spool 3 moves upward and touch back pressure spool 9, if F is greater than the elastic force of back pressure spring 8 while adding the gravity of back pressure spool 9, back pressure spool 9 will be deflated valve core 3 and upwards back down, air above valve ball 5 is discharged under the discharge campaign round trip effect of buoyancy and outlet valve spool 3,
When metering pump during in induction stroke, the pump head pressure decreased, back pressure spool 9 is returned to reset condition under the effect of back pressure spring 8.
Claims (5)
1. an automatic control pressure vent that is applied to sunk type pump head in metering pump, it is characterized in that, comprise valve body (1), back pressure valve seat (2), outlet valve spool (3), little valve seat (4), valve ball (5), valve ball baffle plate (6), back pressure spring (8) and back pressure spool (9); Described back pressure valve seat (2) is arranged on valve body (1), described back pressure spring (8) and back pressure spool (9) are arranged in back pressure valve seat (2), back pressure spool (9) is at the active force lower seal back pressure valve seat (2) of back pressure spring (8), and butt is arranged on the outlet valve spool (3) of back pressure valve seat below, be provided with little valve seat (4) in described outlet valve spool (3), described valve ball (5) is arranged on little valve seat (4) bottom, and in valve ball (5) bottom, valve ball baffle plate (6) is set;
Gas in medium concentrates at the space above ball valve (5) by the gap between ball valve (5) and little valve seat (4), when metering pump during at discharge stroke, pump head pressure raises, air above ball valve (5) is compressed, ball valve (5) moves upward under the double reaction plus of pressurized air and media flow, contact and seal little valve seat (4), pressure in pump chamber continues to raise, and promote ball valve (5) and little valve seat (4) moves upward, thereby promoting outlet valve spool (3) moves upward, and finally back down back pressure spool (9), air above ball valve (5) is discharged under the discharge campaign round trip effect of buoyancy and exhaust plug (3), when metering pump during in induction stroke, the pump head pressure decreased, back pressure spool (9) is returned to reset condition under the active force of back pressure spring (8).
2. a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump according to claim 1, it is characterized in that, be provided with the little valve seat of reverse pair (4a), secondary valve ball (5a) and secondary valve ball baffle plate (6a) below described little valve seat (4), valve ball (5) and valve ball baffle plate (6), described secondary valve ball baffle plate (6a) is arranged on valve ball baffle plate (6) bottom, the little valve seat of described pair (4a) is arranged under secondary valve ball baffle plate (6a), and described secondary valve ball (5a) is arranged between secondary valve ball baffle plate (6a) and secondary little valve seat (4a).
3. a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump according to claim 1, it is characterized in that, be provided with seal ring a (10) between described back pressure valve seat (2) and valve body (1), between described outlet valve spool (3) and valve body (1), be provided with seal ring b (11).
4. a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump according to claim 1, it is characterized in that, described back pressure spring (8) one end butt back pressure spools (9), it is upper that the other end is arranged on back pressure adjusting nut (7), adjusts the elastic force of back pressure spring (8) by back pressure adjusting nut (7).
5. a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump according to claim 1, is characterized in that, the diameter B of described outlet valve spool (3) is greater than the diameter A of back pressure spool (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365946.3A CN103452831B (en) | 2013-08-20 | 2013-08-20 | A kind of automatic control pressure vent being applied to sunk type pump head in metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365946.3A CN103452831B (en) | 2013-08-20 | 2013-08-20 | A kind of automatic control pressure vent being applied to sunk type pump head in metering pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103452831A true CN103452831A (en) | 2013-12-18 |
| CN103452831B CN103452831B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310365946.3A Active CN103452831B (en) | 2013-08-20 | 2013-08-20 | A kind of automatic control pressure vent being applied to sunk type pump head in metering pump |
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| CN (1) | CN103452831B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711752A (en) * | 2013-12-27 | 2014-04-09 | 胜瑞兰工业设备（苏州）有限公司 | Pressure relief valve with function of automatic air exhaust on hydraulic oil cavity |
| CN106050596A (en) * | 2016-06-07 | 2016-10-26 | 神华集团有限责任公司 | Plunger metering pump |
| CN106969174A (en) * | 2017-05-22 | 2017-07-21 | 德帕姆(杭州)泵业科技有限公司 | Exhaust pressure relief valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256139A (en) * | 1977-10-08 | 1981-03-17 | Woma-Apparatebau | Valve assembly for high-pressure piston pump |
| FR2869957A1 (en) * | 2004-05-05 | 2005-11-11 | Bosch Gmbh Robert | Piston pump for vehicle stabilization system, has solenoid valve activating ball of exhaust valve, for opening and/or closing passage, where solenoid valve is activated in active manner with respect to pressure in piston chamber |
| EP1906019A2 (en) * | 2006-09-19 | 2008-04-02 | Lechler GmbH | Non-return valve for metering pumps |
| CN202579158U (en) * | 2012-05-14 | 2012-12-05 | 宫禄齐 | Pressure-maintaining lead high-pressure pneumatic control unloading valve |
| CN203441735U (en) * | 2013-08-20 | 2014-02-19 | 米顿罗工业设备（上海）有限公司 | Automatic vent valve applied to sunken pump head in measuring pump |
-
2013
- 2013-08-20 CN CN201310365946.3A patent/CN103452831B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256139A (en) * | 1977-10-08 | 1981-03-17 | Woma-Apparatebau | Valve assembly for high-pressure piston pump |
| FR2869957A1 (en) * | 2004-05-05 | 2005-11-11 | Bosch Gmbh Robert | Piston pump for vehicle stabilization system, has solenoid valve activating ball of exhaust valve, for opening and/or closing passage, where solenoid valve is activated in active manner with respect to pressure in piston chamber |
| EP1906019A2 (en) * | 2006-09-19 | 2008-04-02 | Lechler GmbH | Non-return valve for metering pumps |
| CN202579158U (en) * | 2012-05-14 | 2012-12-05 | 宫禄齐 | Pressure-maintaining lead high-pressure pneumatic control unloading valve |
| CN203441735U (en) * | 2013-08-20 | 2014-02-19 | 米顿罗工业设备（上海）有限公司 | Automatic vent valve applied to sunken pump head in measuring pump |
Non-Patent Citations (1)
| Title |
|---|
| 苗长山等: "计量泵单向阀密封的有限元分析", 《石油机械》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711752A (en) * | 2013-12-27 | 2014-04-09 | 胜瑞兰工业设备（苏州）有限公司 | Pressure relief valve with function of automatic air exhaust on hydraulic oil cavity |
| CN103711752B (en) * | 2013-12-27 | 2016-08-24 | 胜瑞兰工业设备（苏州）有限公司 | The pressure relief valve of band automatic ventilating function on hydraulic fluid chamber |
| CN106050596A (en) * | 2016-06-07 | 2016-10-26 | 神华集团有限责任公司 | Plunger metering pump |
| CN106969174A (en) * | 2017-05-22 | 2017-07-21 | 德帕姆(杭州)泵业科技有限公司 | Exhaust pressure relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103452831B (en) | 2016-02-24 |
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