CN202851315U - Mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump - Google Patents
Mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump Download PDFInfo
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- CN202851315U CN202851315U CN 201220469032 CN201220469032U CN202851315U CN 202851315 U CN202851315 U CN 202851315U CN 201220469032 CN201220469032 CN 201220469032 CN 201220469032 U CN201220469032 U CN 201220469032U CN 202851315 U CN202851315 U CN 202851315U
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- oil extraction
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Abstract
The utility model relates to a mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump and belongs to the technical field of positive displacement pumps. A membrane is arranged in the middle of a main flow path of the pump, and two ends of the middle of the main flow path of the pump are respectively a pump inlet end and a pump outlet end. A trunk piston is supported on one side of the pump body, wherein an inner hole of the trunk piston is provided with an oil discharge servo limiting sliding valve and an oil replenishing servo limiting sliding valve and is further provided with a back limiting structure of the oil discharge servo limiting sliding valve and a front limiting structure of the oil replenishing servo limiting sliding valve. Springs are arranged between the two sliding valves, and an oil discharging channel and an oil replenishing channel on the wall of the truck piston are respectively blocked by the springs when the two sliding valves are in a limiting state. The center of the membrane is fixedly connected with a vent-pin-opening shaft, wherein the vent-pin-opening shaft penetrates through the enter of the membrane and is arranged on the center of the oil discharge servo limiting sliding valve and the oil replenishing servo limiting sliding valve. An inner limiting structure of the oil discharge servo limiting sliding valve and an outer limiting structure of the oil replenishing servo limiting sliding valve are arranged on an outer circle of the vent-pin-opening shaft. The mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump ensures that oil volume control in the process of replenishing and discharging oil completely depends on real-time states of the pressure inside the hydraulic cavity, thereby achieving accurate control of the oil volume and improving volume efficiency of the membrane pump.
Description
Technical field
The utility model relates to a kind of diaphragm pump, and oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of especially a kind of mechanical type, belongs to the displacement pump technical field.
Background technique
In Coal Chemical Industry and mine metallurgy industry, the hydraulic type diaphragm pump is the capital equipment of transferring raw material-slurry medium in technological process.The length in working life of barrier film is examination and the key technical indexes of differentiating this equipment usability quality.And the principal element that affects barrier film working life is that the distortional stress of deflection can not get effective control before and after the barrier film, cause its flexural stress when limit deflected position diaphragm deflection to cause membrane ruptures in a certain concentration of local, the technology of therefore controlling at work the diaphragm deflection distortion is particularly important.Usually the control realization to the work oil mass of barrier film hydraulic fluid chamber is passed through in the control of diaphragm deflection stress.
Usually adopt the method for repairing or oil extraction that the oil mass of barrier film hydraulic fluid chamber is controlled, wherein commonly with electromagnetic signal control benefit, oil extraction.Its typical structure as shown in Figure 1, its working procedure is: 1. oil extraction: the piston 6 ' that drives when slidercrank mechanism moves ahead, when driving the front dead point of barrier film 2 ' convergence (limit position before the distortion of diagram pre-buckling), the electromagnetism guide rod 1 ' that links to each other with barrier film touches discharge opeing electromagnetic sensor 3 ', produce the oil extraction electromagnetic signal, this signal becomes solenoid valve to carry out through transmitter with the circuit control system conversion treatment machinery action, open oil drain passage, realize when barrier film proceeds to maximum deflection and spends, discharging unnecessary oil.2. repairing: row behind the piston 6 ', when forcing behind the barrier film 2 ' convergence dead point (rear dead point deflection deformation limit position), the electromagnetism guide rod 1 ' that links to each other with barrier film touches fluid infusion electromagnetic sensor 4 ', produce the repairing signal, this signal becomes the machinery action of being carried out by oil-supplementing system with the circuit control system conversion treatment through transmitter, open the repairing passage, realize the oil of undercompensation when walking to maximum deflection behind the barrier film spends.Because this system exists the non-electricity of signal to transform, benefit, oil extraction action start between millisecond and microsecond, easily produce fault.And the operation of repairing and oil draining system is independent of the motion of pump main body, whole control system complex structure, and the link that easily produces fault is more, has affected the reliability of pump operation.
Retrieval is found, application number is that the Chinese utility model patent of ZL93220573.9 discloses diaphragm maximum bending mechanical self-controlling mechanism for hydraulic bellows pump, this patent is out of shape existing drawback for above-mentioned electromagnetic mode control barrier film maximum deflection, adopts the maximum deflection distortion of mechanical self-controlling mechanism controls barrier film.Its working procedure is as shown in Figure 2: 1. oil extraction: when piston [or plunger] 6 ' moves right, the deflection deformation to the right of barrier film 2 ' pressurized, the coupled controlling rod 1 ' distance that also thereupon moves right, the hollow a of controlling rod, shaft radially circular groove c and the duct e on the pump housing on duct b and the shaft cylindrical consist of path, and the unnecessary oil in the hydraulic pressure cavity is discharged by control valve 7 ' by path.2. repairing: piston [or plunger] 6 ' is during to left movement, under suction function, barrier film is deflection deformation left, controlling rod is servo-actuated left, shaft hollow a, shaft radially circular groove c and the duct d on the pump housing on duct b and the shaft cylindrical consist of path, oil from fuel tank flows into hydraulic pressure cavity, the oil of undercompensation by recuperation valve 5 ' through this path.This patent is with respect to having made useful improvement with the oil mass of electromagnetic mode control diaphragm deflection distortion with maximum deflection degree before and after reaching barrier film.But because wherein closure and the breakdown action of benefit, oil extraction oil circuit are to move back and forth direct realization by controlling rod between controlling rod and the pump housing, mend the oil mass of oil extraction for moment and can not accomplish accurate control, namely when piston [or plunger] when moving right, the controlling rod that links to each other with barrier film with the pump housing on the duct form moment of oil outlet passage, oil in the hydraulic pressure cavity just begins to discharge outside hydraulic pressure cavity, this moment, barrier film was not to be in the maximum deflection state, the closed oil outlet passage of the displacement of how much depending on controlling rod of oil drain quantity, but not the pressure the during distortion of barrier film maximum deflection; In like manner, when piston [or plunger] during to left movement, the controlling rod that links to each other with barrier film with the pump housing on the duct consist of repairing path moment, because the hydraulic pressure cavity of this moment is in negative pressure state, oil from fuel tank just enters hydraulic pressure cavity at once, again because the motion of controlling rod is subjected to the impact of speed and inertia, the asphalt channel of repairing can not be in the most appropriate moment in the repairing amount closes immediately, therefore causes the too much repairing of hydraulic pressure cavity.That too much oil extraction or too much repairing all can bring following adverse effect to the operation of pump:
1. the oil extraction oil circuit forms path because of controlling rod with barrier film deflection deformation displacement to the right and pump housing duct in piston [or plunger] right lateral process, because hydraulic pressure cavity pressure is higher than the hydraulic pressure cavity external pressure, the oil extraction action namely begins, this moment, piston continued right lateral and Volume Changes that the deflection of barrier film forms can not form with it equivalence, continue in the remainder stroke of piston [or plunger] when not arriving the right lateral limit position of right lateral institute's work with the oil in the hydraulic pressure cavity outwards discharging becomes invalid acting.This just so that the volumetric efficiency of diaphragm pump greatly reduce.
2. the repairing oil circuit forms path because of controlling rod with barrier film deflection deformation displacement left and the displacement of pump housing duct in piston [or plunger] left lateral process, hydraulic pressure cavity is in negative pressure state, because the hydraulic pressure cavity internal pressure is lower than in the hydraulic pressure cavity external pressure, the repairing action namely begins, this moment, piston continued left lateral and Volume Changes that the deflection of barrier film forms can not form with it equivalence, continuing institute's work in the remainder stroke of piston [or plunger] when not arriving the left lateral limit position of left lateral sucks in the hydraulic pressure cavity with the oil of outside and becomes invalid acting, equally, the time of moment repairing and repairing amount can not precisely be controlled also so that the volumetric efficiency of pump greatly descends.
Summary of the invention
The purpose of this utility model is: for the problem that prior art exists, proposes a kind ofly can to mend moment, the oil mass of oil extraction realizes the multiple automatic control benefit of the mechanical type oil extraction hydraulic type diaphragm pump of precisely control, thereby its volumetric efficiency is improved.
In order to achieve the above object, the multiple automatic control of mechanical type of the present utility model is mended oil extraction hydraulic type diaphragm pump and is comprised the pump housing with sprue, and barrier film is equipped with at described sprue middle part, and two ends are respectively pump intake end and pump discharge end; The described pump housing one side supports the trunk piston that forms with it sliding pair; The servo spacing guiding valve of oil extraction and the servo spacing guiding valve of repairing of ring-type are housed in the endoporus of described trunk piston, and are respectively equipped with the front limit structure of the servo spacing guiding valve of rear spacing and described repairing of the servo spacing guiding valve of described oil extraction; Between the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing spring is housed, when the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing are in spacing state, blocks respectively oil drain passage and repairing passage on the described trunk piston wall; Described diaphragm center is connected with the bibcock axle of opening at the servo spacing guiding valve of the oil extraction of passing and the servo spacing guiding valve of repairing center; Describedly open the outer limit structure that bibcock axle cylindrical is provided with the servo spacing guiding valve of interior spacing and described repairing of the servo spacing guiding valve of described oil extraction; When described trunk piston is in when travelling forward state, the forward deflection deformation of described barrier film, the described bibcock axle of opening compresses the spacing guiding valve of oil extraction, and the spacing valve port of described oil extraction is opened, and described oil drain passage is in the oil extraction servo condition; When described trunk piston is in the retracting motion state, the backward deflection deformation of described barrier film, the described bibcock axle of opening compresses the spacing guiding valve of repairing, and the spacing valve port of described repairing is opened, and described repairing passage is in the servo condition of repairing.
Like this, oil extraction and repairing control by pure machinery can make the fuel-flow control of oil extraction and repairing process depend on the real-time status of hydraulic pressure cavity internal pressure fully, so realize the accurate control of oil mass, have improved the volumetric efficiency of diaphragm pump.
It is that described oil drain passage and repairing passage are equipped with respectively one-direction pressure-fixed draining valve and one-direction pressure-fixed Fill valve away from an end of the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing that the utility model further improves.Like this, be under the maximum deflection deformation state at barrier film, after opening oil extraction or repairing passage, the pressure of barrier film hydraulic pressure cavity can be at autonomous one-direction pressure-fixed draining valve or the one-direction pressure-fixed Fill valve of opening and closing of moment, realize accurate oil extraction of moment or repairing control, further improve the volumetric efficiency of diaphragm pump.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of existing Electromagnetic Control oil extraction, repairing diaphragm pump.
Fig. 2 is the structural representation of existing machinery control oil extraction, repairing diaphragm pump.
Fig. 3 the utility model embodiment one structural representation.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Among Fig. 3 and Fig. 4,1, the one-direction pressure-fixed draining valve; 2, oil drain passage; 3, the spacing valve port of oil extraction; 4, the servo spacing guiding valve of oil extraction; 5, pump discharge end; 6, one-direction pressure-fixed Fill valve; 7, pump discharge valve; 8, repairing passage; 9, the servo spacing guiding valve of repairing; 10, the spacing valve port of repairing; 11, barrier film; 12, pump intake valve; 13, pump intake end; 14, piston; 15, open the bibcock axle.
Embodiment
Embodiment one
The multiple automatic control of the mechanical type of the present embodiment is mended oil extraction hydraulic type diaphragm pump as shown in Figure 3, Figure 4, comprise the pump housing with vertical sprue, barrier film 11 is equipped with at the sprue middle part, and two ends are communicated with pump intake end 13 and pump discharge end 5 by pump intake valve 12 and pump discharge valve 7 respectively.The pump housing one side supports the trunk piston 14 that forms with it sliding pair, and this trunk piston is driven by driving mechanism, can the substantially horizontal to-and-fro motion.The servo spacing guiding valve 4 of oil extraction and the servo spacing guiding valve 9 of repairing of ring-type are housed in the endoporus of trunk piston 14, and are respectively equipped with as step in the rear spacing hole of the servo spacing guiding valve of oil extraction 4 with as the axle position back-up ring of servo spacing guiding valve 9 front limit of repairing.Between the servo spacing guiding valve 4 of oil extraction and the servo spacing guiding valve 9 of repairing the spring that makes its generation be separated from each other trend is housed.When the servo spacing guiding valve 4 of oil extraction and the servo spacing guiding valve 9 of repairing are in respectively separately spacing state, block respectively oil drain passage 2 and repairing passage 8 on the trunk piston wall.Oil drain passage 2 and repairing passage 8 are equipped with respectively one-direction pressure-fixed draining valve 1 and one-direction pressure-fixed Fill valve 6 away from an end of the servo spacing guiding valve 4 of oil extraction and the servo spacing guiding valve 9 of repairing.
The bibcock axle 15 opened at barrier film 11 centers and the servo spacing guiding valve 4 of the oil extraction of passing and the servo spacing guiding valve of repairing 9 centers is connected by coupling shaft.The cylindrical of opening bibcock axle 15 forms respectively the outer limit structure of the interior spacing and servo spacing guiding valve of repairing of the servo spacing guiding valve 4 of oil extraction by the ladder shaft shoulder and ladder axle sleeve.Interior spacing and outer spacing spacing is greater than front limit and rear spacing spacing.
During work, when trunk piston is in when travelling forward state, barrier film is deflection deformation forward, open the bibcock axle and compress the spacing guiding valve of oil extraction, the spacing valve port of oil extraction is opened, oil drain passage is in the oil extraction servo condition---when piston proceeds to when protracting limit position, barrier film is in the maximum deflection state, if the hydraulic pressure cavity internal pressure is instantaneous when being higher than active chamber pressure (force value under the barrier film limit deflected set of one-direction pressure-fixed draining valve), the one-direction pressure-fixed draining valve is opened, and hydraulic pressure cavity pressure oil is via the oil extraction release outside cavity of the oil outlet passage under the servo condition; Protract when instantaneous hydraulic pressure cavity internal pressure is not higher than active chamber pressure when being deformed into the maximum deflection state if barrier film is in, just the one-direction pressure-fixed draining valve is not opened, the oil outlet passage under the servo condition does not just carry out oil extraction; The real-time status of hydraulic pressure cavity internal pressure is depended in the fuel-flow control of above-mentioned oil extraction process fully, has both guaranteed that barrier film deflection deformation to the right reaches maximum flexed configuration, guarantees that again barrier film is no more than its limit amount of deflection.。When trunk piston is in the retracting motion state, barrier film is deflection deformation backward, open the bibcock axle and compress the spacing guiding valve of repairing, the spacing valve port of repairing is opened, the repairing passage is in the servo condition of repairing---when piston continues to bounce back to the retrude limit position, the barrier film retrude is deformed into the maximum deflection state, when if the hydraulic pressure cavity internal pressure is lower than pressure (cracking pressure of one-direction pressure-fixed Fill valve) under the barrier film limit amount of deflection state of setting, the one-direction pressure-fixed Fill valve is opened, and the next oily of hydraulic chamber outside replenishes not enough oil mass via the repairing passage under the servo condition in hydraulic pressure cavity; When if instantaneous hydraulic pressure cavity internal pressure that barrier film is in retrude when being deformed into the maximum deflection state is not less than under the barrier film ultimate state that sets unidirectional level pressure Fill valve oil compensation pressure value, the one-direction pressure-fixed Fill valve is not just opened, and the repairing passage that is under the servo condition does not just carry out repairing; The real-time status of hydraulic pressure cavity internal pressure is depended in the fuel-flow control of above-mentioned repairing process fully, has both guaranteed that barrier film deflection deformation left reaches maximum flexed configuration, guarantees that again barrier film is no more than its limit amount of deflection.
Facts have proved, the diaphragm pump of the present embodiment compared with prior art has following remarkable advantage:
1, pure mechanical structure is practical, reliable performance.
2, oil extraction control is mended in the moving system support that need not to be independent of outside the main movement, has avoided the non-electricity of signal to transform the departure that causes.
3, control accurately, no matter repairing or oil extraction are controlled voluntarily by barrier film hydraulic pressure cavity operation real-time working condition pressure, namely carry out accurate repairing or oil extraction under the maximum deflection state of diaphragm deflection, and be scientific and reasonable.
Claims (6)
1. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type, comprises the pump housing with sprue, and barrier film is equipped with at described sprue middle part, and two ends are respectively pump intake end and pump discharge end; The described pump housing one side supports the trunk piston that forms with it sliding pair; It is characterized in that: the servo spacing guiding valve of oil extraction and the servo spacing guiding valve of repairing of ring-type are housed in the endoporus of described trunk piston, and are respectively equipped with the front limit structure of the servo spacing guiding valve of rear spacing and described repairing of the servo spacing guiding valve of described oil extraction; Between the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing spring is housed, when the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing are in spacing state, blocks respectively oil drain passage and repairing passage on the described trunk piston wall; Described diaphragm center is connected with the bibcock axle of opening at the servo spacing guiding valve of the oil extraction of passing and the servo spacing guiding valve of repairing center; Describedly open the outer limit structure that bibcock axle cylindrical is provided with the servo spacing guiding valve of interior spacing and described repairing of the servo spacing guiding valve of described oil extraction; When described trunk piston is in when travelling forward state, the forward deflection deformation of described barrier film, the described bibcock axle of opening compresses the spacing guiding valve of oil extraction, and the spacing valve port of described oil extraction is opened, and described oil drain passage is in the oil extraction servo condition; When described trunk piston is in the retracting motion state, the backward deflection deformation of described barrier film, the described bibcock axle of opening compresses the spacing guiding valve of repairing, and the spacing valve port of described repairing is opened, and described repairing passage is in the servo condition of repairing.
2. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type according to claim 1, and it is characterized in that: described oil drain passage and repairing passage are equipped with respectively one-direction pressure-fixed draining valve and one-direction pressure-fixed Fill valve away from an end of the servo spacing guiding valve of described oil extraction and the servo spacing guiding valve of repairing.
3. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type according to claim 1 and 2, and it is characterized in that: described sprue two ends are communicated with pump intake end and pump discharge end by pump intake valve and pump discharge valve respectively.
4. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type according to claim 3, it is characterized in that: spacing behind the servo spacing guiding valve of described oil extraction is step in the hole, and the servo spacing guiding valve front limit of described repairing is axle position back-up ring.
5. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type according to claim 4, and it is characterized in that: the described cylindrical of opening the bibcock axle forms respectively the outer limit structure of the interior spacing and servo spacing guiding valve of repairing of the servo spacing guiding valve of oil extraction by the ladder shaft shoulder and ladder axle sleeve.
6. oil extraction hydraulic type diaphragm pump is mended in the multiple automatic control of mechanical type according to claim 5, and it is characterized in that: described interior spacing and outer spacing spacing is greater than described front limit and rear spacing spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220469032 CN202851315U (en) | 2012-09-14 | 2012-09-14 | Mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220469032 CN202851315U (en) | 2012-09-14 | 2012-09-14 | Mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump |
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| Publication Number | Publication Date |
|---|---|
| CN202851315U true CN202851315U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220469032 Withdrawn - After Issue CN202851315U (en) | 2012-09-14 | 2012-09-14 | Mechanical-type multiple self-control oil-replenishing-and-discharging hydraulic-type membrane pump |
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| CN (1) | CN202851315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147963A (en) * | 2012-09-14 | 2013-06-12 | 江苏双达泵阀集团有限公司 | Mechanical multiple automatic control oil recharging and discharging hydraulic diaphragm pump |
-
2012
- 2012-09-14 CN CN 201220469032 patent/CN202851315U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147963A (en) * | 2012-09-14 | 2013-06-12 | 江苏双达泵阀集团有限公司 | Mechanical multiple automatic control oil recharging and discharging hydraulic diaphragm pump |
| CN103147963B (en) * | 2012-09-14 | 2015-03-25 | 江苏双达泵阀集团有限公司 | Mechanical multiple automatic control oil recharging and discharging hydraulic diaphragm pump |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20150325 |
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| RGAV | Abandon patent right to avoid regrant |