CN203441735U - Automatic vent valve applied to sunken pump head in measuring pump - Google Patents
Automatic vent valve applied to sunken pump head in measuring pump Download PDFInfo
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- CN203441735U CN203441735U CN201320511303.0U CN201320511303U CN203441735U CN 203441735 U CN203441735 U CN 203441735U CN 201320511303 U CN201320511303 U CN 201320511303U CN 203441735 U CN203441735 U CN 203441735U
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- back pressure
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- valve seat
- spool
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Abstract
The utility model relates to an automatic vent valve applied to a sunken pump head in a measuring pump. The automatic vent valve comprises a valve body (1), a back pressure valve seat (2), a vent valve element (3), a small vale seat (4), a valve ball (5), a valve ball baffle (6), a back pressure spring (8) and a back pressure valve element (9). 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) is used for sealing the back pressure valve seat (2) under the acting force of the back pressure spring (8) and is connected to the exhaust valve element (3) below the back pressure valve seat in a butting mode, a small valve seat (4) is arranged in the vent valve element (3), the valve ball (5) is arranged at the bottom of the small valve seat (4), and the valve ball baffle (6) is arranged at the bottom of the valve ball (5). Compared with the prior art, the automatic vent valve applied to the sunken pump head in the measuring pump has the advantages of being stable and reliable in working, insensitive to particles, long in service life and the like.
Description
Technical field
The utility model relates to a kind of metering pump, especially relates 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 within the scope of 0-100% 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, conventionally 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, in medium, conventionally contain particle, conventionally 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, metering pump measuring accuracy is declined, have influence on the technique of whole system.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of working stability reliable in order to overcome the defect of above-mentioned prior art existence, insensitive to particle, the automatic control pressure vent that is applied to sunk type pump head in metering pump of long service life.
The purpose of this utility model 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, in described outlet valve spool (3), be provided with little valve seat (4), 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 ball valve (5) space above by the gap between ball valve (5) and little valve seat (4), when metering pump is during at discharge stroke, pump head pressure raises, ball valve (5) air is above 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), ball valve (5) air is above discharged under the discharge campaign round trip effect of buoyancy and exhaust plug (3), when metering pump is during in induction stroke, pump head pressure decreased, back pressure spool (9) is returned to reset condition under the active force of back pressure spring (8).
Described little valve seat (4), valve ball (5) and valve ball baffle plate (6) are provided with the little valve seat of reverse pair (4a), secondary valve ball (5a) and secondary valve ball baffle plate (6a) below, 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).
Between described back pressure valve seat (2) and valve body (1), be provided with seal ring a (10), 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 spool (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 utility model has mainly solved the automatic vent problem of metering pump sunk type pump head pump head in 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 pressure pulsation effect, outlet valve starts work and gets rid of the air that assemble at top; The pressure pulsation that the utility model 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.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model automatic control pressure vent.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of automatic control pressure vent that is applied to sunk type pump head in metering pump, comprises 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, in described outlet valve spool 3, be provided with little valve seat 4, 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; Described little valve seat 4, valve ball 5 and valve ball baffle plate 6 are provided with the little valve seat 4a of reverse pair, secondary valve ball 5a and secondary valve ball baffle plate 6a below, 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.Between described back pressure valve seat 2 and valve body 1, be provided with seal ring a10, 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 there is no air in outlet valve the inside, 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 of asking by ball valve 5 and little valve seat 4 concentrate at the space above ball valve 5, when metering pump is during at discharge stroke, pump head pressure raises, ball valve 5 air pressure is above relatively low, there is compressed trend, 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, valve ball 5 space pressure is above constant, produce the stiction between pressure difference F=(valve ball 5 pressure one valve ball 5 pressure above below) * 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, valve ball 5 air is above discharged under the discharge campaign round trip effect of buoyancy and outlet valve spool 3,
When metering pump is during in induction stroke, 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, in described outlet valve spool (3), be provided with little valve seat (4), 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 ball valve (5) space above by the gap between ball valve (5) and little valve seat (4), when metering pump is during at discharge stroke, pump head pressure raises, ball valve (5) air is above 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), ball valve (5) air is above discharged under the discharge campaign round trip effect of buoyancy and exhaust plug (3), when metering pump is during in induction stroke, 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, described little valve seat (4), valve ball (5) and valve ball baffle plate (6) are provided with the little valve seat of reverse pair (4a), secondary valve ball (5a) and secondary valve ball baffle plate (6a) below, 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, between described back pressure valve seat (2) and valve body (1), be provided with seal ring a (10), 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 spool (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 |
|---|---|---|---|
| CN201320511303.0U CN203441735U (en) | 2013-08-20 | 2013-08-20 | Automatic vent valve applied to sunken pump head in measuring pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320511303.0U CN203441735U (en) | 2013-08-20 | 2013-08-20 | Automatic vent valve applied to sunken pump head in measuring pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441735U true CN203441735U (en) | 2014-02-19 |
Family
ID=50092794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320511303.0U Expired - Lifetime CN203441735U (en) | 2013-08-20 | 2013-08-20 | Automatic vent valve applied to sunken pump head in measuring pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452831A (en) * | 2013-08-20 | 2013-12-18 | 米顿罗工业设备（上海）有限公司 | Automatic exhausting valve applied to sinking type pump head applied in metering pump |
-
2013
- 2013-08-20 CN CN201320511303.0U patent/CN203441735U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452831A (en) * | 2013-08-20 | 2013-12-18 | 米顿罗工业设备（上海）有限公司 | Automatic exhausting valve applied to sinking type pump head applied in metering pump |
| CN103452831B (en) * | 2013-08-20 | 2016-02-24 | 米顿罗工业设备（上海）有限公司 | A kind of automatic control pressure vent being applied to sunk type pump head in metering pump |
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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: 20140219 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |