CN2570495Y

CN2570495Y - Actuating apparatus of cylinder-and-piston type reciprocating pump

Info

Publication number: CN2570495Y
Application number: CN 02266096
Authority: CN
Inventors: 房兆俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-04
Filing date: 2002-08-04
Publication date: 2003-09-03
Anticipated expiration: 2012-08-04

Abstract

A driving mechanism of a plunger reciprocating pump in the prior art usually adopts that a motor runs to drive the running of a crankshaft together with a flywheel, and adopts the connection of the crankshaft and the plunger of the reciprocating pump by a connecting rod; integrated accuracy technology in the manufacture requires to possess high-accuracy mechanical machining equipment and possess workers having certain skills, and thereby, machining and maintenance is difficult and cost is high, and furthermore, friction force not only loses a fairly part of functions in the process of running, but also machine parts of the equipment is easy to wear, has short service life, and generates serious noise. A driving mechanism of a plunger type reciprocating pump of the utility model is characterized in that the utility model mainly comprises a hydraulic station, two oil inlet and outlet pipes (A and B), a communicating oil pipe (C), and two groups of oil pressure cylinders. The utility model has the advantages of low energy consumption, wear resistance, less noise, and wide range of application; main parts all have standard parts specifically made by professional factories, and furthermore, the utility model has the advantages of easy buy and easy match in the market, low cost, convenient manufacture, and has quality guarantee.

Description

A kind of drive unit of plunger type reciprocating pump

Technical field

The utility model is a kind of drive unit of plunger type reciprocating pump.

Technical background

Plunger reciprocating pump driving mechanism of the prior art normally adopts motor rotation to drive bent axle and flywheel turns round together, and Cai Yong Even bar meets the Zhu Sai Even of bent axle and reciprocating pump.You Yu Even bar.Structural relation between the plunger of bent axle and reciprocating pump, when motor rotation drives the crankshaft rotating motion, and plunger is to do reciprocatory motion; So it is big to come and go impulse inertia in the course of the work, therefore Material Strength, impulse fatigue resistance, the comprehensive branch of the surface abrasion resistance art to driving mechanism equipment requires all very high, and during fabrication, to manufacturing synthesis precision technical requirementss such as size error, shape, positional accuracy and surface roughnesses also is very high, guarantee the synthesis precision technical requirements in these manufacturings, must possess high accuracy mechanical process equipment and the skilled worker who possesses certain technical ability, therefore not only the processing maintenance is difficult, and the cost height.Limit because of structure in addition, particularly the crank pin of bent axle is Yu there is the round radial impact of upper dead center and Xia Si Dian Week phase property in the course of the work in the bearing liner of Even bar, though piston back-and-forth movement is the motion of straight line, but stressed between piston and the cylinder sleeve is not straight line, but to bear certain pushing frictional force in side direction, in operation process, not only lose quite a few function, and other parts of equipment are easy to wear, the life-span short, also can produce serious noise.

Summary of the invention

Of the present utility model and be shortcoming at the existence of prior art, and provide a kind of drive unit of low, wear-resistant, that noise is little, Applicable scope the is wide a kind of plunger type reciprocating pump that consumes energy, and this kind plunger reciprocating pump main zero accessory of drive unit the special standard piece of making of specialized factory is all arranged, market is easily purchased easily and is joined, cost is low, easy to process, quality is guaranteed.

The drive unit of a kind of plunger type reciprocating pump of the present utility model is characterized in that it mainly passes in and out oil pipe, (C) UNICOM's oil pipe and two groups of driving mechanisms that oil hydraulic cylinder is formed by hydraulic station, two (A, B); Article two, an end of (A, B) turnover oil pipe respectively with two selector valves of hydraulic station Xiang Even connect, its the other end is in parallel logical with corresponding (A, B) group oil hydraulic cylinder top respectively, cross over pipe (C) links with the bottom of two groups of oil hydraulic cylinders, oil hydraulic cylinder is installed on plunger support that the plunger that is used for making reciprocating pump can pump takes over a business, the pull bar on the piston in the oil hydraulic cylinder pass at the bottom of the oil hydraulic cylinder take over a business with the plunger support and with the plunger of reciprocating pump Xiang Even connect; Be separately installed with four signaling switches (SQA is last, under the SQA, under last, the SQB of SQB) on the upper and lower top between the stroke that the plunger on two groups of plunger supports pumps; The signal that four signaling switches of two groups (SQA is last, under the SQA, under last, the SQB of SQB) are obtained connects with to-and-fro motion control circuit system, and coil one end by to-and-fro motion control circuit system and hydraulic station selector valve links.

The utility model has following advantage compared with prior art:

1, work operates steadily, and noise is little, end consumption efficient economizing electric energy.

2, wear-resistant long service life.

3, the standard piece of all being made specially by specialized factory because of the mainly zero portion accessory of this product, market is easily purchased easily and is joined, and invests gently high efficiency at the bottom of the manufacturing difficulty.

4, at the bottom of the easy expense of maintenance easy to use, the maintenance light labor intensity.

5, use wide ranges: the conveying that can make various medium source material as conveying such as clear water, draining-off sewage, food, building materials pottery, paper making pulp, can also be applicable to the consolidation by grouting of tunnel railway or highway tunnel roofs such as water conservancy dam, engineering construction, traffic mine.

Pressure range can be regulated arbitrarily.

Description of drawings

Below in conjunction with drawings and Examples the utility model is done and to be described in further detail.

Fig. 1 is the structural representation of the drive unit of plunger type reciprocating pump of the present utility model.

Fig. 2 is the enlarged diagram of the piston structure in a kind of embodiment's oil hydraulic cylinder of the present utility model.

Among the figure: 1 oil hydraulic cylinder, 2 hydraulic pistons, 3 plunger supports are taken over a business, 4 plunger supports, 5 pull bars, 6 plungers, 7 plunger cases, 8 go out safety check, 9 advance safety check, 10 outlet collecting pipes, 11 import collecting pipes, 12 hydraulic stations, 13A oil inlet and oil return pipe, 14B oil inlet and oil return pipe, 15 oil cylinder UNICOM oil pipes, 16 (on the SQA, under the SQA, on the SQB, under the SQB) signaling switch, 17 lower pistons, 18 pressure rings, 19 seal rings, 20 upper pistons, 21 bolts, 22 round nuts, 23 valves, 24 pressure springs, card is told in 25 Kazakhstan, 26 circular grooves, 27 breathe out the spring deck, 28 valve rod guide holes, 29 valve rod guide hole plates, 30 oil throughs, 31 valve seats, 32 flaps, 33 circular grooves, 34 valve openings, 35 valve rods

Embodiment

As shown in Figure 1, the drive unit of a kind of plunger type reciprocating pump of the present utility model is characterized in that it mainly is made up of hydraulic station 12, two (A, B) turnover oil pipe (13,14), C UNICOM oil pipe 15 and two groups of (A, B) oil hydraulic cylinders 1; Article two, an end of (A, B) turnover oil pipe (13,14) respectively with two selector valves of hydraulic station 12 Xiang Even connect, its the other end links with the top of corresponding (A, B) group oil hydraulic cylinder 1 respectively, the bottom of oil cylinder cross over pipe 15 and two groups of oil hydraulic cylinders 1 (A, B) links, oil hydraulic cylinder 1 is installed in the plunger support that the plunger that is used for making on the reciprocating pump can pump takes over a business on 3, the pull bar 5 on the hydraulic piston 2 in the oil hydraulic cylinder pass 1 end of oil hydraulic cylinder and plunger support take over a business 3 and with the plunger 6 of reciprocating pump Xiang Even connect; In addition respectively the upper and lower end between the stroke on (A, B) two groups of plungers pump the plunger support of usefulness be separately installed with two groups of four signaling switches 16 (SQA is last, under the SQA, SQB is last, under the SQB); (SQA is last, under the SQA, under last, the SQB of SQB) can adopt signaling switches such as stroke, photoelectricity, approaching, electromagnetic induction, the control circuit system can adopt electric appliance and electronic, variable program controller or single chip microcomputer etc., the signal that four signaling switches of two groups (SQA is last, under the SQA, under last, the SQB of SQB) are obtained connects with to-and-fro motion control circuit system, and coil one end by to-and-fro motion control circuit system and hydraulic station selector valve links.

The driving mechanism working principle of the drive unit of the utility model plunger type reciprocating pump is as follows:

As when pressing the A group selector valve switch button of to-and-fro motion control circuit system, the selector valve coil electricity, A oil inlet and oil return pipe 13 oil circuits are the oil-feed oil circuit, B oil inlet and oil return pipe 14 oil circuits are oil return circuit, promote A group pump oil hydraulic cylinder piston 2 from the top descending when oil pressure, and slurries or medium are compressed into out safety check 8 → from going out collecting pipe 10 outputs from A group plunger cylinder 7; The oil pressure of A group oil hydraulic cylinder bottom injects B group oil hydraulic cylinder 1 bottom through oily cross over pipe 15, the piston 2 of this oil pressure promotion B group is up, linkage pull bar 5 is organized B pump plunger 6 simultaneously and is up drawn, and slurries or medium suck B group plunger cylinders 7 from advancing to starch collecting pipe 11 → advance safety check 9.Have only when A organizes oil hydraulic cylinder piston 2 and arrive lower dead center, B group pump oil cylinder piston 2 is to top dead center, the signal that signaling switch (under the SQA, on the SQB) is obtained is by the selector valve commutation of to-and-fro motion control circuit system with hydraulic station, B pipe 14 is converted to the oil-feed oil circuit, A pipe 13 is converted to oil return circuit, its working principle is with top described the same, and only the direction of operation is opposite up and down.

For synchronous, constant, stable anti-phase operation between the piston that keeps A, two groups of oil hydraulic cylinders of B, its spy is to be respectively equipped with corresponding collision benefit, oil-releasing mechanism up and down in (A, B) two groups of piston one sides, be in the top oil-releasing mechanism that is, be in the following repairing mechanism that is.As shown in Figure 3, hydraulic piston 2 in the oil hydraulic cylinder 1 in the present embodiment is combined into one with several bolts 21 by upper and lower corresponding piston (20,17), and the endoporus of upper and lower piston (20,17) and pull bar 5 one end secure fit, upper and lower two-piston (20,17) opposing end surface forms circular groove 33 in conjunction with the back, pressure ring 18 is installed on circular groove 33, between piston and oil pressure casing wall, seal ring 19 is housed at the upper and lower end face of pressure ring 18 and the circular groove 33 of upper and lower piston; In addition on pull bar one side of piston, having collision mends, oil-releasing mechanism: promptly the side at piston is provided with corresponding valve opening 34 up and down, and on valve opening 34 up and down shape being housed resembles like mushroom valve 23, on the valve seat 31 of the flap 32 of valve in valve opening 34, the valve rod 35 of valve pass with piston be one valve rod guide hole plate 29 valve rod guide hole 28 outwardly, week at valve rod guide hole plate 29 is provided with oil through 30, pressure spring 24 is housed on valve rod 34, the caudal part cylindrical of valve rod is processed with circular groove 26, be equipped with on the circular groove to breathe out and tell card 25, Kazakhstan spring deck 27 is enclosed within to breathe out and tells outside the card 25, with breathing out spring deck 27 pressure spring 24 is being withheld.

Collision benefit, oil-releasing mechanism working principle in the present embodiment are as follows;

When there is oil pressure on oil hydraulic cylinder 1 top of A group, the flap 32 that is in the oil-releasing mechanism valve above the piston is down pushed open under the effect of pressure reduction, oil from all oil through 30 of valve rod guide hole plate toward dirty, the flap 32 that is in the repairing mechanism valve below the lower piston is airtight between differential pressure action lower Disc 32 and valve seat 31, force piston to move down, the oil of piston lower floor injects B group oil hydraulic cylinder bottom through oil cylinder UNICOM oil pipe 15, in the oil pressure effect piston that B organizes oil hydraulic cylinder is advanced up, the flap 32 of the repairing mechanism on the lower piston that this moment, B organized is up being pushed open under the differential pressure action down, oil up pushes up from all oil throughs 30 of valve rod guide hole plate, the flap 32 of the oil-releasing mechanism above the B group upper piston is being airtight between differential pressure action lower Disc 32 and the valve seat 31 down, forces B group piston to move up.If this moment, the hydraulic piston 2 of A group oil hydraulic cylinder arrived the bottom earlier, the flap 32 of the repairing mechanism on the lower piston 17 of A group is backed down by the collision of oil hydraulic cylinder bottom, this moment A group hydraulic piston 2 about between the pressure reduction disappearance, piston promptly stops descending; But the hydraulic piston 2 of B group pump oil cylinder is as going back the no show top, 2 ends of hydraulic piston of A group oil hydraulic cylinder and 2 end of the hydraulic piston low on fuel of B group oil hydraulic cylinder are described, oil pressure can be organized between benefit, oil-releasing mechanism flap 32 and the valve seat 31 of valve opening 34 oil hydraulic cylinder top, the piston slit from A and mended low on fuel between A group and the B group oil hydraulic cylinder bottom this moment, and the hydraulic piston 2 that makes B organize oil hydraulic cylinder also in time reaches the top.The hydraulic piston 2 of peace the same manner B group oil hydraulic cylinder reaches the top earlier, wherein oil mass excess enthalpy is described, but B this moment organizes the oil-releasing mechanism of the upper piston 17 of oil hydraulic cylinder and is backed down, unnecessary oil is discharged to the hydraulic station fuel tank from (B) return tube, has only A, hydraulic piston 2 up the outreaching of one group of oil hydraulic cylinder that B is two groups, and the hydraulic piston 2 of another group oil hydraulic cylinder is descending when also arriving the place, bottom, be in two groups of four signaling switches of plunger support relevant position (on the SQA this moment, under the SQB or on the SQB, under the SQA) two signals that switch is obtained, by the control hydraulic station selector valve commutation of to-and-fro motion control circuit system, thereby keep oil mass between the hydraulic piston 2 of two groups of oil hydraulic cylinders always, oil pressure, constant airspeed, operation up and down reciprocatingly is synchronously, constant, stable.

There are three kinds of feelings will use benefit, row mechanism, piston when (one) beginning to start in the oil hydraulic cylinder of two groups of pumps all is in the bottom of oil pressure, the valve of two-piston downside is all backed down, A tubing pressure oil this moment piston upside valve of this cylinder under differential pressure action is opened, and piston upside valve piston upside valve of this cylinder under differential pressure action of B group pump is tightly being closed forces upwards operation of piston.(2) A group pump arrives lower dead center ahead of time in the fortune process, and the piston of B group pump no show top dead center also illustrates the low on fuel of two-piston downside this moment, this and enter the not enough state of mending fair oil mass automatically.(3) when the also no show lower dead center of piston of A group, this moment B group pump the piston arrives top dead center, it is unnecessary that the oil mass that the two-piston downside be described has, the piston upside that B organizes pump is backed down enters the oil extraction state automatically.Have only two cylinders to be in upper and lower two corresponding dead-centre positions respectively, just begin commutation, thereby regulate the position of two-cylinder piston correspondence automatically, adjusting keeps A automatically, the B pump can constant relatively stable operation.

Claims

1, a kind of drive unit of plunger type reciprocating pump is characterized in that it mainly is made up of hydraulic station 12, two (A, B) turnover oil pipe (13,14), C UNICOM oil pipe 15 and two groups of (A, B) oil hydraulic cylinders 1; Article two, an end of (A, B) turnover oil pipe (13,14) respectively with two selector valves of hydraulic station 12 Xiang Even connect, its the other end links with the top of corresponding (A, B) group oil hydraulic cylinder 1 respectively, the bottom of oil cylinder cross over pipe 15 and two groups of oil hydraulic cylinders 1 (A, B) links, oil hydraulic cylinder 1 is installed in the plunger support that the plunger that is used for making on the reciprocating pump can pump takes over a business on 3, the pull bar 5 on the hydraulic piston 2 in the oil hydraulic cylinder pass 1 end of oil hydraulic cylinder and plunger support take over a business 3 and with the plunger 6 of reciprocating pump Xiang Even connect; In addition respectively the upper and lower end between the stroke on (A, B) two groups of plungers pump the plunger support of usefulness be separately installed with two groups of four signaling switches 16 (SQA is last, under the SQA, SQB is last, under the SQB); (SQA is last, under the SQA, under last, the SQB of SQB) can adopt signaling switches such as stroke, photoelectricity, approaching, electromagnetic induction, the control circuit system can adopt electric appliance and electronic, variable program controller or single chip microcomputer etc., the signal that four signaling switches of two groups (SQA is last, under the SQA, under last, the SQB of SQB) are obtained connects with to-and-fro motion control circuit system, and coil one end by to-and-fro motion control circuit system and hydraulic station selector valve links.

2, the drive unit of a kind of plunger type reciprocating pump according to claim 1, it is characterized in that the hydraulic piston 2 in the oil hydraulic cylinder 1 is combined into one with several bolts 21 by upper and lower corresponding piston (20,17), and the endoporus of upper and lower piston (20,17) and pull bar 5 one end secure fit, upper and lower two-piston (20,17) opposing end surface forms circular groove 33 in conjunction with the back, pressure ring 18 is installed on circular groove 33, between piston and oil pressure casing wall, seal ring 19 is housed at the upper and lower end face of pressure ring 18 and the circular groove 33 of upper and lower piston; In addition on pull bar one side of piston, having collision mends, oil-releasing mechanism: promptly the side at piston is provided with corresponding valve opening 34 up and down, and on valve opening 34 up and down shape being housed resembles like mushroom valve 23, on the valve seat 31 of the flap 32 of valve in valve opening 34, the valve rod 35 of valve pass with piston be one valve rod guide hole plate 29 valve rod guide hole 28 outwardly, week at valve rod guide hole plate 29 is provided with oil through 30, pressure spring 24 is housed on valve rod 34, the caudal part cylindrical of valve rod is processed with circular groove 26, be equipped with on the circular groove to breathe out and tell card 25, Kazakhstan spring deck 27 is enclosed within to breathe out and tells outside the card 25, with breathing out spring deck 27 pressure spring 24 is being withheld.