CN2639554Y - Electrohydraulic high-pressure plunger pump - Google Patents
Electrohydraulic high-pressure plunger pump Download PDFInfo
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- CN2639554Y CN2639554Y CN 03257132 CN03257132U CN2639554Y CN 2639554 Y CN2639554 Y CN 2639554Y CN 03257132 CN03257132 CN 03257132 CN 03257132 U CN03257132 U CN 03257132U CN 2639554 Y CN2639554 Y CN 2639554Y
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Abstract
The utility model relates to an electro-hydraulic high pressure plunger pump, comprising a pump head assembly, a hydraulic system and an electric control system, wherein the hydraulic system comprises a reversing loop, an oil feed loop, a protecting loop and an oil source; and the electric control system comprises a starting circuit, a reversing circuit, a fluid feed circuit and a high-low pressure, temperature and liquid level protecting circuit. The pump has the advantages of simple structure, low frequency of stroke, small vibration, stable pressure, continuous and adjustable flow and long service life.
Description
Affiliated technical field
The utility model relates to a kind of electrolyte type high-pressure plunger pump, and this pump belongs to the high-pressure plunger pump class, is can not few visual plant in oil field, the mine.Can carry high pressure water, high-pressure slurry or high pressure polymerisation thing and some corrosion and even toxic liquid with this.
Background technique
Existing high-pressure plunger pump is a crankshaft connecting rod type, shortcoming such as have that jig frequency height, vibration are big, cabinet cracking and plunger life-span are short, and especially transferring polymer often reduces the efficient of polymer because of jig frequency is too high.Though the report of hydraulic type high-pressure plunger pump is arranged recently, complex structure, pressure and flowed fluctuation are big, impact is big and efficient is supported.Therefore still not having matured product at present puts on market.
Summary of the invention
Task of the present utility model is to propose a kind of electrolyte type high-pressure plunger pump, and it can overcome above-mentioned various shortcoming, and have simple in structure, vibration is little, jig frequency is low, flow is adjustable continuously, pressure is steady and the life-span such as grows at advantage.
Implementing technical measures of the present utility model is that this pump is made up of three parts such as pump head assembly, hydraulic system and automatical control systems, and wherein hydraulic system comprises five parts compositions such as commutation loop, fluid infusion loop, protection loop and oil sources; Automatical control system comprises five parts such as starting circuit, commutating circuit, fluid infusion circuit, protective circuit and motor circuit.Introduced respectively below.
1. the pump head assembly of this high-pressure plunger pump two goes out rod oil cylinder and two pump heads are formed by one.Wherein pump head is made up of pump cylinders, plunger, packing, end cap, coupling sleeve, a feed liquor valve and a discharge opeing valve.Wherein plunger links to each other with a cylinder rod, and the extension of end cap is enclosed within the termination of oil cylinder, coupling sleeve is connected with six bolts mutually with the vertical disk that is welded in the outside, oil cylinder termination, makes pump head and oil cylinder constitute a coaxial rigid body, the plunger of pump head promptly is a cylinder rod.Another cylinder rod also connects another identical pump head, forms the high-pressure plunger pump that goes out two pump heads of rod oil cylinder band by pair thus.An annular chamber is wherein all arranged between each end cap of oil cylinder and the pump head end cap, and on circumference uniform six liquid outlets, mix with grease proofing, liquid.The liquid entering hole of two pump heads is in parallel respectively with liquid port.
2. the commutation loop of hydraulic system is made up of a two-position four-way electro-hydraulic reversing valve and two reverseres.Wherein two reverseres are installed in respectively on the inner side surface of the left and right two end cap of oil cylinder, and left end cap is installed reverser open in usual, and right end cap is installed the Normally closed type reverser.Two reverseres all are made up of identical hydraulic package and sealed type film sensitive switch, wherein hydraulic package comprises flexible rod, damping spring, guiding valve, return spring, back-up ring and three six parts such as set screw, its sensitive switch often have open, normally closed branch.When the oil cylinder piston left lateral and when running into the flexible rod of reverser on the left end cap, switch on, so the oil circuit of selector valve commutation, piston rod begins right lateral, when the oil cylinder piston right lateral was run into the flexible rod of reverser on the right end cap, switch disconnected, the selector valve outage, oil circuit commutates for the second time, thereby finishes the motion of one-period; The fluid infusion loop is made up of bag type accumulator, two-position three way solenoid directional control valve and a feed liquor valve and a discharge opeing valve.Two valve communicate with the lower end hydraulic port of accumulator, again respectively with the feed liquor valve of pump head and discharge opeing valve mutually and connect.The leather bag of accumulator is inflated with nitrogen not, but communicates with the outlet of two-position three way solenoid directional control valve, and the high pressure oil import of selector valve communicates with oil sources, and return opening communicates with fuel tank; The protection loop is formed high and low pressure guard, temperature protector and Liquid level protector respectively by the pressure gauge that has the high and low pressure electric contact, temperature transducer and liquid level sensor.Once exceed limit value, oil sources is autostop just; Oil sources is made up of motor, manual Variable plunger pump, essence, thick oily filter, one-way valve, electromagnetism unloading overflow valve, remote pressure regulating valve and fuel tank.
3. the starting circuit of automatical control system is made up of a normally-closed contact of thermorelay in the off-load coil of start button, stop botton, contactor, the time relay, relief valve and the motor circuit and a normally-closed contact of protective circuit repeat circuit; Commutating circuit is made up of a normally opened contact of the time relay in a relay, time relay, two reverseres and the fluid infusion circuit and the electromagnet coil of a two-position four-way electro-hydraulic reversing valve; The fluid infusion circuit is made up of normally opened contact of the electromagnet coil of a time relay, a two-position three way solenoid directional control valve, commutating circuit repeat circuit and two normally-closed contacts of the time relay; Protective circuit is made up of temperature transducer, liquid level sensor and high and low pressure electric contact and a relay respectively; Motor circuit is made up of three normally opened contacts and the air-break switch of motor, thermorelay, contactor.
Description of drawings
Below in conjunction with embodiment shown in the drawings, the utility model is described in further detail, wherein
Fig. 1 is pump head assembly of the present utility model and hydraulic scheme;
Fig. 2 is two reverser structural drawing of the present utility model;
Fig. 3 is automatical control system figure of the present utility model.
Embodiment
Find out that by Fig. 1 pump head assembly of the present utility model is by oil cylinder 1 and pump head assembly 1 ' form.Wherein oil cylinder 1 goes out rod-type for two, and it is made up of cylinder barrel 2, piston 3, cylinder rod 4, end cap 5 and the vertical disk 6 that is welded on the cylinder barrel outside, every cylinder rod all connect a pump head 1 '.Pump head 1 ' by pump cylinders 2 ', packing 3 ', end cap 4 ', coupling sleeve 5 ', plunger 4 and a feed liquor valve 7 and a discharge opeing valve 8 form.Cylinder rod 4 is the pump head plunger, oil cylinder 1 and pump head 1 ' coaxial being connected, wherein end cap 4 ' with pump cylinders 2 ' for being threaded and positioning section being arranged, coaxial to guarantee both, end cap 4 ' can be around cylinder tube 2 coaxial rotation.End cap 4 ' by coupling sleeve 5 ' and be welded on the disk 6 in cylinder tube 2 outsides and 6 bolts 10 with pump head 1 ' be fixed together with oil cylinder 1.Cylinder cover 5 adopts wresting-in types also one section positioning step to be arranged, cylinder cover 5 and pump head end cap 4 ' between an annular chamber C is arranged, and on circumference uniform 6 through hole T so that oil and flow of liquid that both sides are oozed out are gone out, prevent the fluid mixing.In addition, the degree that compresses of packing needs constantly to adjust at work, and its adjusting method is to unclamp 6 bolts 10, then with iron rod insert rotary end cover 4 in the T hole ', after mixing up, tighten 6 bolts 10 again.Find out that by Fig. 1 feed liquor valve 7 communicates with right pump head plunger cavity with discharge opeing valve 8, and feed liquor valve 7 ' with discharge opeing valve 8 ' communicate with left pump head plunger cavity, feed liquor valve 7 and 7 ' in parallel wherein, discharge opeing valve 8 and 8 ' in parallel, the total liquid entering hole I that has formed this high-pressure plunger pump thus and total liquid port E.A Normally closed type reverser K is housed on the inner side surface of oil cylinder right end cap 5 among Fig. 1
2, its structural group prejudice Fig. 2, it comprises a hydraulic package and a Normally closed type electronic switch.Wherein hydraulic package is made up of flexible rod 34, damping spring 35, guiding valve 36, return spring 37, back-up ring 38 and three screws 39, and electronic switch 40 is a Normally closed type sealing film sensitive switch.A reverser K open in usual in like manner is housed on the left end cap inner side surface of oil cylinder 1 in Fig. 1
1, see Fig. 2, its hydraulic package and K
2Identical, just electronic switch 41 is open in usual; The commutation loop of hydraulic system is by two reverser K among Fig. 1
1, K
2Form with a two-position four-way electro-hydraulic reversing valve 11; The fluid infusion loop is made up of feed liquor valve 7 ", discharge opeing valve 8 ", bag type accumulator 9 and two-position three way solenoid directional control valve 12.Wherein the feed liquor valve 7 " with feed liquor valve 7 and 7 ' in parallel, discharge opeing valve 8 " and discharge opeing valve 8 and 8 ' in parallel, and feed liquor valve 7 " with discharge opeing valve 8 " communicates with the hydraulic port D of accumulator 9.The leather bag import of accumulator is inflated with nitrogen not, but communicates with the outlet of a two-position three way electro-hydraulic reversing valve 12, and the P mouth of selector valve communicates with return opening with the high-pressure mouth of oil sources respectively with the O mouth; The protection loop is respectively by having high and low pressure electric contact K
GWith K
DPressure gauge 23 form the high and low pressure protectors, form temperature protector and form Liquid level protector by liquid level sensor 20 by temperature transducer 21; Oil sources is made up of motor 13, manual Variable plunger pump 15, one-way valve 16, thick oil filter 14, essential oil filter 17, electromagnetism off-load overflow product valve 18, remote pressure regulating valve 19 and fuel tank 22.
Figure 3 shows that automatical control system figure of the present utility model, wherein starting circuit 24 comprises circuit 25,26 and 27.Circuit 25 comprises start button Q, contactor KM, stop botton T, thermorelay J
RNormally-closed contact J
R-1With the relay J in the protective circuit 32
2Normally-closed contact J
2-1, circuit 26 comprises time relay sj
1Normally opened contact KM with contactor KM
-2, circuit 27 comprises the off-load coil XH and the time relay sj of electromagnetism unloading overflow valve 18
1Normally opened contact SJ
1-1Commutating circuit 28 comprises the electromagnet coil and the relay J of two-position four-way electro-hydraulic reversing valve 11 among Fig. 3
1And time relay sj
2, after three's parallel connection again with reverser K
1, K
2Series connection, wherein K
1Be normally opened contact, K
2Be normally-closed contact; Fluid infusion circuit 29 comprises circuit 30 and 31 among Fig. 3, and circuit 30 is by time relay sj
3And SJ
2Normally-closed contact SJ
2-1Form, circuit 31 is by electromagnet coil, the time relay sj of two-position three way solenoid directional control valve 12
2And SJ
3Normally-closed contact SJ
2-2And SJ
3-2And relay J
1Normally opened contact J
1-1Form; Protective circuit 32 comprises relay J among Fig. 3
2With with the contact K of the temperature transducer 21 of its polyphone
W, liquid level sensor 20 contact K
Y, high-tension electricity contact K
GWith low tension contact K
D, K wherein
W, K
Y, K
G, K
DBe parallel connection; Motor circuit 33 comprises motor 13, thermorelay J among Fig. 3
R, contactor KM normally opened contact KM
-3With air-break switch K and fus FUL.
Now describe the working principle of electrolyte type high-pressure plunger pump described in the utility model in detail in conjunction with Fig. 1, Fig. 2 and Fig. 3.
1. start, as the air-break switch K of circuit 33 among the Fig. 3 that closes and when pressing start button Q, so contactor KM energising is contact KM
-1Closure forms self-locking, and motor begins No Load Start (relief valve 18 outage off-loads), KML in the circuit 26 simultaneously
-2Closure, so time relay sj
1Energising, its contact SJ in circuit 27
1-15 seconds such as palpus are just closed, reach the purpose of delayed startup thus, and wherein XH is a relief valve off-load coil.
2. commutation, two-position four-way electro-hydraulic reversing valve 11 is an off-position among Fig. 1, high pressure oil enters right cavity of cylinder by the A mouth, force piston to left movement, so right pump head plunger cavity increases, suck liquid and be full of full chamber by feed liquor valve 7, left pump head plunger cavity reduces simultaneously, and with highly pressurised liquid through discharge opeing valve 8 ' discharge.When reverser K is met in the piston left side
1Flexible rod 34 and when it is advanced left, because Returnning spring 37 rigidity among Fig. 2 are lower than the rigidity of damping spring 35, so guiding valve and flexible rod are with moved further and make K
1Closed.When guiding valve 36 left end major diameters parts once with after the plane skeleton of electronic switch contact, just left lateral again, only by the small diameter portion of guiding valve with switch on, so protected electronic switch 41 not to be damaged., but just bear when breaking through a segment distance because inertia can not stop at once when oil cylinder piston 3, break to prevent parts by the compression of damping spring 35.Work as K
1Circuit 28 conductings among closed back Fig. 3 are so electro-hydraulic reversing valve 11 commutations change from the B mouth high pressure oil and enter chamber, an oil cylinder left side, so piston 3 begins right laterals.Since the logical high pressure oil in left chamber this moment, reverser K
1Guiding valve 36 right-hand member effects very big hydraulic coupling is arranged, and the left end oil return does not produce hydraulic coupling, therefore when piston 3 left flexible rod 34, guiding valve can still be parked in K
1Closed position is equivalent to K
1Self-locking.Flexible rod 34 has through hole along axial direction, so that the stress balance at its two ends.Right pump head plunger cavity is compressed when the piston right lateral, thereby discharges highly pressurised liquid along discharge opeing valve 8, and simultaneously left pump head plunger cavity increases, by feed liquor valve 7 ' inspiration low pressure liquid.When reverser K is met in piston 3 right sides
2Flexible rod the time, according to Normally closed type reverser K in like manner
2Be cut off.Because K
2Circuit 28 conductings before cutting off, time relay sj
2Conducting, thereby the SJ in the circuit 30
2-1Disconnect, be directed at the SJ in the circuit 28 thus
3-1Disconnect, so work as K
2Disconnect moment circuit 28 outages, so electro-hydraulic reversing valve 11 commutations, so high pressure oil enters the A mouth of oil cylinder again, as piston reverses direction K during to left movement
2Still disconnect.At this moment, because the B chamber does not have pressure, K
1Guiding valve under action of reset spring, get back to right position, so K
1Disconnect.Because time relay sj
2Open circuit, make circuit 30 conductings, so the SJ in the circuit 28
3-1Closed.When oil cylinder piston 3 left lateral and meet K
1Flexible rod 34 force K
1When closed, K
2Though still locate off state, because of SJ
3-1Closure, still conducting of circuit 28, thereby oil circuit commutation, high pressure oil begins to enter the B mouth again, at this moment K
2Closed.Because circuit 28 conductings are ordered about circuit 30 and are disconnected, so the SJ in the circuit 28
3-1The contact disconnects again.So begun second period again.
3. fluid infusion and since among Fig. 1 manually the be in operation flow of oil of variable displacement pump 15 immobilize, so the motion of pump head plunger 4 is constant speed, the flow of the liquid of its discharge also must be for constant.But impact for reducing in when commutation, piston will slow down, and in the commutation spot speed even be zero, so the fluid flow and the pressure that are discharged from must reduce.A kind of fluid infusion of the ad hoc meter of the utility model loop for this reason.Selector valve 12 is in "on" position among Fig. 1, and the epicoele F that high pressure oil will enter accumulator 9 by the P mouth and the outlet of valve expands leather bag, thereby the fluid of cavity of resorption " is discharged the deficiency of liquid when commutating to supply by discharge opeing valve 8.Because the constant flow of oil, unnecessary high pressure oil must enter the epicoele of accumulator 9 when oil hydraulic cylinder commutate, therefore the lucky equivalent of liquid of discharge replenished its deficiency, make fluid flow reach constant.Work as oil cylinder piston as can be known by Fig. 1, Fig. 3 and move right and make K
2The moment that disconnects, circuit 28 outages, so circuit 30 conductings, time relay sj
3Conducting, the SJ in the circuit 31
3-2Need delay a period of time to disconnect, so circuit 31 conductings.So two-position three way solenoid directional control valve 12 supplies high pressure oil to accumulator 9, so that in the liquid road, replenish highly pressurised liquid.After the oil cylinder piston commutation finishes, SJ in the circuit 31
3-2The contact disconnects, so selector valve 12 outages make accumulator epicoele F communicate with fuel tank, thereby the oil in the leather bag flows back to fuel tank by selector valve 12 under the effect of low pressure liquid, finishes a repairing and moves.The repairing time is time relay sj
3Retard time; When the oil cylinder piston left lateral and with reverser K
1When colliding, oil circuit commutates again, circuit 28 conductings, J in the circuit 31
1-1Make contact, and SJ
2-2Need postpone a period of time again could disconnect, thereby circuit 31 conductings, and accumulator 9 begins again to liquid road supply highly pressurised liquid, up to time relay sj
2Postpone end of a period SJ
2-2Till during disconnection, this moment, supply time was by time relay sj
2Decision.This shows accumulator of the every commutation of oil cylinder just repairing once fluid flow and pressure are remained unchanged.
4. protection is found out by circuit among Fig. 3 32, and when any index was overproof in four indexs such as temperature, liquid level, high pressure and low pressure, the switch of its respective sensor all can be closed, makes circuit 32 conductings, relay J
2Normally-closed contact J in circuit 25
2-1Disconnect immediately, thereby shut down.In addition, when heating up owing to motor overload in the motor circuit 33, thermorelay J
RConducting, thereby its normally-closed contact J in circuit 25
R-1Disconnect, so shut down.Find out that thus this pump has the kinds of protect function.
5. flow when needs change the liquid discharge flow rate, can change the swash plate angle of manual variable displacement pump 15 among Fig. 1.
Claims (5)
1. an electrolyte type high-pressure plunger pump comprises pump head assembly, hydraulic system and automatical control system three parts, and wherein hydraulic system is made up of 4 parts such as commutation loop, fluid infusion loop, protection loop and oil sources; Automatical control system is by starting circuit, commutating circuit, the fluid infusion circuit, 5 parts such as protective circuit and motor circuit are formed, it is characterized in that the pump head assembly goes out rod oil cylinder (1) and pump head (1 ') is formed by two, wherein oil cylinder (1) is by cylinder barrel (2), piston (3), cylinder rod (4), end cap (5) and vertical disk (6) composition that is welded on cylinder barrel (2) outside, every cylinder rod all connects a pump head (1 '), pump head (1 ') is by pump cylinders (2 '), packing (3 '), end cap (4 '), coupling sleeve (5 '), a plunger (4) and a feed liquor valve (7) and a discharge opeing valve (8) are formed, cylinder rod (4) is the plunger of pump head, oil cylinder (1) and coaxial being connected of pump head (1 '), wherein end cap (4 ') and pump cylinders (2 ') are for being threaded and positioning section being arranged, coaxial to guarantee both, end cap (4 ') and cylinder tube (2) are for being slidingly connected, both require coaxial, end cap (4 ') can be around cylinder tube (2) coaxial rotation, end cap (4 ') relies on coupling sleeve (5 ') and disk (6) and bolt (10) that pump head (1 ') and oil cylinder (1) are fixed together, cylinder cover (5) adopts wresting-in type and one section positioning step is arranged, an annular chamber (C) is arranged and uniform six through hole T on circumference between cylinder cover (5) and the pump head end cap (4 '), so that adjust the degree of tightness of packing with this, feed liquor valve (7) communicates with the plunger cavity of right pump head with discharge opeing valve (8), feed liquor valve (7 ') communicates with the plunger cavity of left pump head with discharge opeing valve (8 '), wherein feed liquor valve (7) is in parallel with (7 '), discharge opeing valve (8) is in parallel with (8 '), forms total liquid entering hole (I) and total liquid port (E) of this high-pressure plunger pump thus; The commutation loop of this high-pressure plunger pump hydraulic system is by two reverser (K
1, K
2) and a two-position four-way electro-hydraulic reversing valve (11) composition, the fluid infusion loop is by feed liquor valve (7 "); discharge opeing valve (8 "), a bag type accumulator (9) and a two-position three way solenoid directional control valve (12) are formed, wherein the feed liquor valve (7 ") and feed liquor valve (and 7; 7 ') parallel connection; discharge opeing valve (8 ") and discharge opeing valve (8,8 ') parallel connection, feed liquor valve (7 ") and discharge opeing valve (8 ") all hydraulic port (D) with accumulator (9) link, the suction port of leather bag (F) communicates with the outlet of a two-position three way solenoid directional control valve (12), the P mouth of selector valve communicates with oil sources, and the O mouth communicates with fuel tank; The commutating circuit of this high-pressure plunger pump automatical control system (28) comprises electromagnet coil, the relay (J of two-position four-way electro-hydraulic reversing valve (11)
1) and time relay (SJ
2), after three's parallel connection with reverser (K
1, K
2) series connection, wherein (K
1) be normally opened contact, (K
2) be normally-closed contact, fluid infusion circuit (29) is made up of circuit (30) and (31), and circuit (30) comprises the time relay (SJ
3) and the time relay (SJ
2) normally-closed contact (SJ
2-1), circuit (31) is by electromagnet coil, the time relay (SJ of a two-position three way solenoid directional control valve (12)
2, SJ
3) normally-closed contact (SJ
2-2) and (SJ
3-2) and relay (J
1) normally opened contact (J
1-1) form.
2. by the described electrolyte type high-pressure plunger pump of claim 1, it is characterized in that on the inner side surface of the oil cylinder right end cap (5) in the pump head assembly Normally closed type reverser (K being housed
2), it comprises a hydraulic package and a Normally closed type electronic switch, wherein hydraulic package is made up of flexible rod (34), damping spring (35), guiding valve (36), return spring (37), back-up ring (38) and screw (39), electronic switch (40) is a Normally closed type sealing film sensitive switch, and reverser (K open in usual in like manner is housed on oil cylinder left end cap inner side surface
1), wherein hydraulic package is identical, and electronic switch (41) is a sealing film sensitive switch open in usual.
3. by the described electrolyte type high-pressure plunger pump of claim 1, it is characterized in that starting the loop and comprise circuit (25), (26) and (27), circuit (25) is by start button (Q), contactor (KM), stop botton (T), thermorelay (J
R) normally-closed contact (J
R-1) and protective circuit (32) in relay (J
2) normally-closed contact (J
2-1) form, circuit (26) comprises the time relay (SJ
1) and the normally opened contact (KM of contactor (KM)
2), what circuit (27) comprised that electromagnetism unloads He relief valve (18) unloads He coil (XH) and time relay (JS
1) normally opened contact (SJ
1-1).
4. by the described electrolyte type high-pressure plunger pump of claim 1, it is characterized in that forming the protector of this pump, wherein the high-tension electricity contact (K of pressure gauge (23) by protection loop and protective circuit
G) and low tension contact (K
D), the normally opened contact (K of temperature transducer (21)
W) and the normally opened contact (K of liquid level sensor (20)
Y) after the parallel connection, again with relay (J
2) series connection, constituted high and low pressure, temperature and Liquid level protector thus respectively.
5. by the described electrolyte type high-pressure plunger pump of claim 1, it is characterized in that oil sources is by motor (13), manually variable displacement pump (15), one-way valve (16), thick oil filter (14), essential oil filter (17), electromagnetism unloading overflow valve (18), remote pressure regulating valve (19) and fuel tank (22) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257132 CN2639554Y (en) | 2003-05-09 | 2003-05-09 | Electrohydraulic high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257132 CN2639554Y (en) | 2003-05-09 | 2003-05-09 | Electrohydraulic high-pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2639554Y true CN2639554Y (en) | 2004-09-08 |
Family
ID=34295497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03257132 Expired - Fee Related CN2639554Y (en) | 2003-05-09 | 2003-05-09 | Electrohydraulic high-pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2639554Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371107C (en) * | 2005-08-08 | 2008-02-27 | 西安重型机械研究所 | Vibrating device hydraulic system |
| CN102022611A (en) * | 2009-09-23 | 2011-04-20 | 贺勍 | Novel lubricating pump and volume occupation grease discharging method for preventing plunger and cylinder body from being worn |
| CN102913436A (en) * | 2012-10-18 | 2013-02-06 | 温州市森泰环保设备有限公司 | Safety mechanism of slurry hydraulic plunger pump |
| CN103244472A (en) * | 2013-05-08 | 2013-08-14 | 中国重型机械研究院股份公司 | Servo hydraulic cylinder valve system for hydraulically balancing gravity load of crystallizer |
| CN104329237A (en) * | 2014-11-04 | 2015-02-04 | 贾久胜 | Large-sized energy-storage vacuum maintaining pump |
| CN105041599A (en) * | 2015-07-01 | 2015-11-11 | 施伟 | Chemical-liquid continuous feeding pump |
| CN106468252A (en) * | 2016-10-25 | 2017-03-01 | 舟山梅朋水处理有限公司 | A kind of equipment of liquid transformation transmission and system |
| CN107971309A (en) * | 2018-01-04 | 2018-05-01 | 江苏艾福利环保材料科技有限公司 | Cleaning head for pipelines |
| CN109372823A (en) * | 2018-12-29 | 2019-02-22 | 王斌 | Internal-circulation type hydraulically extensible cylinder |
| CN111140456A (en) * | 2019-12-30 | 2020-05-12 | 宁波文泽机电技术开发有限公司 | Submersible pump |
| CN111255646A (en) * | 2020-02-22 | 2020-06-09 | 宁波文泽机电技术开发有限公司 | Double-cylinder booster plunger pump |
| CN117759515A (en) * | 2024-02-22 | 2024-03-26 | 德州联合石油科技股份有限公司 | Integral single-action hydraulic reciprocating pump |
| CN117871299A (en) * | 2024-01-11 | 2024-04-12 | 深圳市优优绿能股份有限公司 | Pulse fatigue test system of liquid cooling runner |
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- 2003-05-09 CN CN 03257132 patent/CN2639554Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371107C (en) * | 2005-08-08 | 2008-02-27 | 西安重型机械研究所 | Vibrating device hydraulic system |
| CN102022611A (en) * | 2009-09-23 | 2011-04-20 | 贺勍 | Novel lubricating pump and volume occupation grease discharging method for preventing plunger and cylinder body from being worn |
| CN102913436A (en) * | 2012-10-18 | 2013-02-06 | 温州市森泰环保设备有限公司 | Safety mechanism of slurry hydraulic plunger pump |
| CN102913436B (en) * | 2012-10-18 | 2016-05-25 | 温州市森泰环保设备有限公司 | A kind of release mechanism of mud hydraulic planger pump |
| CN103244472B (en) * | 2013-05-08 | 2016-03-16 | 中国重型机械研究院股份公司 | A kind of servo hydraulic cylinder valve system of hydraulic balance crystallizer gravity load |
| CN103244472A (en) * | 2013-05-08 | 2013-08-14 | 中国重型机械研究院股份公司 | Servo hydraulic cylinder valve system for hydraulically balancing gravity load of crystallizer |
| CN104329237B (en) * | 2014-11-04 | 2017-02-15 | 贾久胜 | Large-sized energy-storage vacuum maintaining pump |
| CN104329237A (en) * | 2014-11-04 | 2015-02-04 | 贾久胜 | Large-sized energy-storage vacuum maintaining pump |
| CN105041599A (en) * | 2015-07-01 | 2015-11-11 | 施伟 | Chemical-liquid continuous feeding pump |
| CN106468252A (en) * | 2016-10-25 | 2017-03-01 | 舟山梅朋水处理有限公司 | A kind of equipment of liquid transformation transmission and system |
| CN107971309A (en) * | 2018-01-04 | 2018-05-01 | 江苏艾福利环保材料科技有限公司 | Cleaning head for pipelines |
| CN107971309B (en) * | 2018-01-04 | 2023-08-18 | 江苏艾福利环保材料科技有限公司 | Pipeline cleaning head |
| CN109372823A (en) * | 2018-12-29 | 2019-02-22 | 王斌 | Internal-circulation type hydraulically extensible cylinder |
| CN111140456A (en) * | 2019-12-30 | 2020-05-12 | 宁波文泽机电技术开发有限公司 | Submersible pump |
| CN111255646A (en) * | 2020-02-22 | 2020-06-09 | 宁波文泽机电技术开发有限公司 | Double-cylinder booster plunger pump |
| CN117871299A (en) * | 2024-01-11 | 2024-04-12 | 深圳市优优绿能股份有限公司 | Pulse fatigue test system of liquid cooling runner |
| CN117759515A (en) * | 2024-02-22 | 2024-03-26 | 德州联合石油科技股份有限公司 | Integral single-action hydraulic reciprocating pump |
| CN117759515B (en) * | 2024-02-22 | 2024-05-10 | 德州联合石油科技股份有限公司 | Integral single-action hydraulic reciprocating pump |
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