CN105673385B - A kind of emulsion plunger - Google Patents

Abstract

The present invention provides a kind of emulsion plunger and a kind of emulsion power pack, comprising: motor；Crankcase forms the crankshaft slot for installing crankshaft in crankcase, and the sliding block being connected with plunger makees the sliding slot to reciprocatingly slide；Installation is in the crankcase in crankshaft slot: crankshaft, and crankshaft is driven by motor output shaft to be rotated；The: Lian Wilsonii being mounted in sliding slot in the crankcase, one end are connect with crank rotation, and the other end is fixedly connected with sliding block, under the drive of crankshaft, driving sliding block reciprocatingly slides in sliding slot；Plunger is connected with sliding block, moves back and forth in high pressure cylinder sleeve under the drive of sliding block, to realize imbibition and drain；Sliding block includes slider body, and the slide block set on slider body outer diameter is removably arranged in, and be kept fixed slide block set and slider body by fastener, and there is sliding block not allow easy to wear, advantage easy to repair after abrasion.

Description

A kind of emulsion plunger

Technical field

The present invention relates to technical field of engineering machinery, and in particular to emulsion plunger.

Background technique

High-pressure high-flow emulsion pump is the hydraulic power supply for the design of Large Coal Enterprises fully-mechanized mining working support apparatus, It is the key equipment for realizing working face high-yield and high-efficiency, the continuity of work, Stability and dependability are for guaranteeing coal enterprise Safety in production and increasing economic efficiency have very important significance.As coal-mining technique develops to high-tech direction, to cream Changing pump station also proposed new requirement, not only guarantee the flow and pressure of pump, while also require to guarantee the service life of pump And reliability, that is, improve the unfailing service time.The emulsion pump of largest domestic flow reaches 550L/min at present, but opposite In high-end big flow imported product, it is unable to satisfy the service performance requirement of the above coal mining output of ten-million-ton scale, big flow is high-end Emulsion pump fully relies on import.

With reference to the structural schematic diagram of the sliding block in the prior art of Figure 10, existing sliding block generally uses the cast aluminium knot of monoblock type Structure, the slider pin for being rotatablely connected connecting rod are to be positioned at the both ends of through-hole with nylon plug, the sliding block of this structure Its structure is simple, light weight, setback pin and cost is relatively low, but it has the disadvantage in that since the hardness of cast aluminium is lower, with The surface of separate cavities oil sealing mating part is easy to be scratched by oil sealing, to generate oil leakage phenomenon, influences the normal work of pump, needs The sliding block of damage is replaced.Again because the operation replaced in the crankcase of monoblock type to sliding block is very complicated , it could be into after needing all to remove the crankshaft in crankcase, the connection between connecting rod and sliding block and sliding block and plunger Row replacement, therefore it replaces difficulty and maintenance cost is very high.On the other hand, the cooperation required precision of slider pin is very high, because of aluminium Intensity and hardness it is all relatively low, so slider pin must be interference fitted wherein can be reliable and stable fixation, otherwise slide It is easy to appear deformation for installing the hole of slider pin on block, therefore its assembly difficulty is also relatively high.

Summary of the invention

Therefore, the technical problem to be solved in the present invention is that sliding block in large-flow emulsion pump in the prior art is overcome to exist It is easy to be worn in sliding slot, to generate oil leakage phenomenon, influences the technological deficiency of the normal work of plunger pump.

In order to solve the above technical problems, the present invention provides a kind of emulsion plunger, comprising:

Motor；

Crankcase forms the crankshaft slot for installing crankshaft in the crankcase, and the sliding block being connected with plunger make it is past The sliding slot slided again；

It is mounted in crankshaft slot described in the crankcase:

Crankshaft, the crankshaft is driven by the motor output shaft to be rotated；

It is mounted in the sliding slot described in the crankcase:

Connecting rod, one end are connect with the crank rotation, and the other end is fixedly connected with the sliding block, in the band of the crankshaft Under dynamic, the sliding block is driven to reciprocatingly slide in the sliding slot；

Plunger is connected with the sliding block, moves back and forth in high pressure cylinder sleeve under the drive of the sliding block, to realize Imbibition and drain；

The sliding block includes slider body, and the slide block set on the slider body outer diameter is removably arranged in, and The slide block set and the slider body are kept fixed by fastener.

In above-mentioned emulsion plunger, the end of the slider body forms threaded hole, and the plunger connector is corresponding The threaded hole forms threaded rod, forms screw thread on the outer circumference surface of the plunger connector；

The fastener is locking nut, and the locking nut is by the screw thread on the plunger connector outer circumference surface by institute It states slider body and slide block set is fixed together.

In above-mentioned emulsion plunger, the slider body include first end and for installing the slide block set second The diameter at end, the second end is less than the first end diameter, and forms in the second end and agree with the slide block set thickness First terrace and second step face lower than the First terrace；

Described slide block set one end is resisted against on the First terrace, and the other end, which forms, is pressed on the second step face On pressure section.

In above-mentioned emulsion plunger, the sections inner side that the slide block set leans with the First terrace is formed Annular groove is provided with sealing ring in the annular groove.

In above-mentioned emulsion plunger, the slider body is made of cast iron.

In above-mentioned emulsion plunger, the slide block set is made of stainless steel.

In above-mentioned emulsion plunger, one end that the sliding block connects the connecting rod is formed for accommodating the connecting rod The open slot of end, the open slot have the two side walls being oppositely arranged；

Slider pin is equipped in through-hole on the side wall, the connecting rod and the slider pin are rotatablely connected.

In above-mentioned emulsion plunger,

The end of two side walls is also respectively facing the slider pin and is provided with threaded hole, and positioning bolt is mounted on screw thread In hole, to be biased power to the slider pin.

In above-mentioned emulsion plunger, the slider pin corresponds to the positioning bolt and is provided with recessed locating slot.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of crankcase in the embodiment of the present invention；

Fig. 2 is the stress analysis schematic diagram of sliding block in existing crankcase；

Fig. 3 is the comparison signal of crankcase sliding block force analysis and existing crankcase sliding block force analysis during the present invention is implemented Figure；

Fig. 4 is the schematic cross-sectional view of split type crankcase in the embodiment of the present invention；

Fig. 5 is the schematic cross-sectional view of one-piece crankshaft case in the prior art；

Fig. 6 is the crankshaft force analysis figure for using double base in the prior art；

Fig. 7 is in the prior art using the crankshaft force analysis figure of three bearings；

Fig. 8 is the force analysis figure of six bearings in the embodiment of the present invention；

Fig. 9 is the schematic cross-sectional view that the present invention is plunger in embodiment；

Figure 10 is the schematic cross-sectional view of sliding block in the prior art；

Figure 11 is the schematic cross-sectional view of sliding block in the embodiment of the present invention；

Figure 12 is imbibition-drain schematic cross-sectional view of head portion in the prior art；

Figure 13 is imbibition-drain schematic cross-sectional view of head portion in the embodiment of the present invention；

Figure 14 is that crankcase and motor are attached to the structural schematic diagram on collet by foundation bolt in the prior art；

Figure 15 is that crankcase and motor are installed to the structural schematic diagram on collet in the embodiment of the present invention；

Figure 16 is the schematic cross-sectional view of pedestal in the embodiment of the present invention；

Figure 17 is the structural schematic diagram of lubricating system in the prior art；

Figure 18 is the structural schematic diagram of lubricating system during the present invention is implemented；

Figure 19 is the structural schematic diagram of crankshaft internal lubrication oil circuit；

Figure 20 is the structural schematic diagram of emulsion power pack.

Description of symbols:

10- motor；20- crankcase；31- crankshaft；33- plunger；34- connecting rod；35- sliding block；36- high pressure cylinder sleeve；21- A part；22- second part；311- bearing；331- plunger body；332- protects head；333- plunger connector；351- slide block set； 352- slider body；353- open slot；354- slider pin；355- positioning bolt；23- liquid sucting valve；24- tapping valve；Before 25- pump head Cover board；26- pump head；40- base；50- collet；41- mounting surface；312- connecting rod lubrication oil circuit；313- sliding block lubricant passage way；51- Imbibition supervisor；52- returns liquid supervisor.

Specific embodiment

Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, specifically above-mentioned term can be understood at this by feelings Saeka Concrete meaning in invention.

As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments It can be combined with each other at conflict.

Embodiment 1

The present embodiment provides a kind of emulsion plungers, and with reference to Fig. 1, the emulsion plunger of the present embodiment includes motor 10 (not showing in Fig. 1) and crankcase 20 form crankshaft slot and sliding slot for installing crankshaft 31, crankshaft 31 in crankcase 20 It is rotatably arranged in crankshaft slot, and can be rotated under the driving of motor 10.

Plunger 33, sliding block 35 and connecting rod 34 are installed in the sliding slot, wherein plunger 33 is located at the front end of sliding slot, Be fixedly connected with the front end of sliding block 35, the rear end of sliding block 35 and connecting rod 34 are rotatablely connected, the other end of connecting rod 34 then with crankshaft 31 Rotation connection.In this way when motor 10 drives crankshaft 31 to rotate, connecting rod 34 is then able to drive sliding block 35 and plunger 33 in sliding slot It inside moves back and forth, so that the imbibition and drain for plunger pump provide power.

In the present embodiment, the rotation center of crankshaft 31 is vertically lower than the position of center line of sliding slot, that is to say Crankshaft 31 drives the sliding block 35 in sliding slot to move back and forth on relatively low position.And preferably in the rotary course of crankshaft 31 In, the variation range of connecting rod 34 and horizontal direction angle changes between 5-10 °.It is with the emulsion plunger that applicant designs Example, it is ensured that the variation range of connecting rod 34 and horizontal direction angle is between 5-10 °, then the rotation center of preferred crankshaft 31 is perpendicular Histogram is lower than the center line 5-15mm of sliding slot upwards, such as the rotation center of crankshaft 31 in the vertical direction can be lower than in sliding slot The heart line 5mm, 10mm or 15mm, in this then most preferably 10mm.Although in above-mentioned preferred embodiment, connecting rod 34 and horizontal direction The variation range of angle between 5-10 °, it is not limited to this, it is clear that on the emulsion plunger of different displacements, connecting rod Length different designs will be present, at this feelings Saeka, those skilled in the art can become connecting rod 34 and the angle of horizontal direction Change range, which is made, to be adaptively adjusted, but it should belong among the design of this implementation claimed invention.

Designing in this way is advantageous in that: existing 31 rotation center of crankshaft and sliding slot center line with reference to shown in Fig. 2 are contour The schematic illustration of plunger pump in set-up mode:

In imbibition process: plunger 33 is not due to by the effect of emulsion fluid pressure, 35 base of plunger 33 and sliding block Originally will not be under pressure effect；

In discharge opeing process: plunger 33 pushes emulsion discharge, and end face is by face area and emulsion fluid pressure Be worth product pressure effect, therefore when connecting rod 34 give 35 active force of sliding block horizontal separation be greater than above-mentioned 33 end face of plunger by Fluid pressure when, plunger 33 could complete drain, in Fig. 1, connecting rod 34 give sliding block power be F, horizontal component be etc. In the F1 of fluid pressure, vertical component is F2, therefore sliding block will receive F2 and rub multiplied by coefficient of friction between sliding block 35 and sliding slot Power effect is wiped, the frictional force is bigger when the angle between F and horizontal plane is bigger, that is to say that sliding block 35 is more prone to wear.

31 rotation center of crankshaft is lower than plunger in the set-up mode of sliding slot center line in the present embodiment with reference to shown in Fig. 3 The schematic illustration of pump；

In discharge opeing process: after the rotation center of crankshaft 31 moves down, connecting rod 34 give sliding block 35 power F and horizontal plane it Between angle also reduce therewith, to effectively reduce rubbing between sliding block 35 and sliding slot compared to existing design method Power is wiped, rapid wear in sliding block use process is avoided.And cut, when being moved down due to the rotation center of crankshaft 31, the F horizontal direction Component increased so that resultant force F is declined, improve the efficiency that crankshaft 31 pushes sliding block 35.

In conclusion the emulsion plunger of the present embodiment can reduce the friction that sliding block 35 is subject in discharge opeing process Power improves the service life of equipment so that sliding block 35 be avoided to be worn, and helps to shorten the maintenance frequency.

Embodiment 2

The present embodiment is improvement on that basis of example 1, and the difference compared to embodiment 1 is:

With reference to Fig. 4, crankcase 20 is split type structure in the present embodiment comprising mutually fastens first be installed together Part 21 and second part 22, preferably first part 21 and second part 22 are respectively provided with general crankshaft slot, by first part 21 Complete crankshaft slot is constituted after mutually fastening installation with second part 22, the advantages of this arrangement are as follows, first part 21 and the After the separation of two parts 22, crankshaft 31 can be taken out from crankshaft slot.

As a preferred embodiment, on the longitudinal cross-section of first part 21 and second part 22, the combination of the two Face is the straight line between horizontal plane in 45 ° of angles.First part 21 and second part 22 can pass through the fastenings such as connection bolt Part is attached, to keep relatively fixed.

With reference to the cross-sectional side view of one-piece crankshaft case shown in fig. 5, the installation method of this crankcase is: 1, in crankshaft Bearing is installed on 31；

2, the crankshaft for installing bearing is penetrated into cabinet from the hole of 20 side of crankcase；

3, bearing is adjusted into the bearing hole in crankcase 20.

In this installation process, in order to be easier crankshaft 31 in the hole of incoming crankcase, need 20 two sides of crankcase Hole machined be greater than the form of bearing outside diameter at size, recycle and cover bearing holder (housing, cover) outside bearing, crankshaft 31 is fixed on case In vivo, it is clear that it is compared for crankcase 20 split type in this present embodiment, and installation process is more cumbersome.When on crankshaft 31 When tool is there are three supporting 311, after needing first to be installed in place intermediate bearing, in the bearing for installing two sides, due to crankshaft 31 Weight is larger, is in general only capable of assisting to install by engineering machinery, therefore it is compared to the peace of above-mentioned double base crankshaft 31 Dress difficulty greatly increase, and support quantity reach 4 or it is more when, just substantially can not again by crankshaft 31 be packed into crankshaft In case 20.

In existing emulsion plunger, plunger 33 is usually two or three, and the bearing on crankshaft 31 is two or three It is a.With reference to the schematic illustration of Fig. 6 and double base crankshaft shown in Fig. 7 and three bearing crankshafts.Because of bending stress and bending deformation, Proportional with the distance of active force to supporting-point, the distance of active force to supporting-point is bigger, then bending deformation is answered with bending Power is bigger.Therefore shorten active force to the distance of supporting-point, the Bending Influence power of 31 bending deformation of crankshaft can be effectively reduced, Achieve the purpose that the strength and stiffness for improving crankshaft 31.

With reference in Fig. 6, the stress feelings Saeka of the crankshaft of two bearings, there are three plungers 33 to act on simultaneously 31 generation of crankshaft Power supports provided counter-force greater than single plunger and acts on the power on crankshaft 31, and the maximum distance of active force to supporting-point is The half of overall length.The bending stress of crankshaft 31 is maximum, at the same to the sensibility of 33 amount of force of plunger variation also accordingly compared with Greatly, it when the operating pressure of emulsion pump is higher by preset range, is easy for causing crankshaft 31 that cannot bear active force and be broken.For Crankshaft 31 is set to meet the needs of strength and stiffness, the crankshaft 31 supported using two needs to increase the diameter of crankshaft, therefore its Processing and manufacturing higher cost, installation difficulty is larger and later maintenance difficulty is also larger.

With reference in Fig. 7, the stress feelings Saeka of the crankshaft of three bearings, active force to supporting-point apart from maximum value be 0.3L (wherein L is the axial length of crankshaft 31), at most there are two plungers to generate active force to crankshaft simultaneously between two bearings, by 40% is reduced in distance, and active force reduces 33%, two total 2.5 times of bending stress reductions that will make crankshaft 31. The susceptibility when 33 amount of force of plunger changes also correspondingly reduces simultaneously.To effectively increase the strong of crankshaft 31 Degree and rigidity, can save steel to a certain extent.But this crankshaft is being applied to the above coal mining output work Saeka of ten-million-ton scale In, still it is unable to meet demand.

With reference in Fig. 8, there are six the stress feelings Saeka of the crankshaft 31 supported, any one plungers for tool involved in the present embodiment The distance of 33 active force to supporting-point is 0.1L, and distribution of forces is uniform, is had and only between any two bearing There is the active force of a plunger 33.Since the distance of active force to supporting-point is reduced into 0.1L, and active force only one column The active force of plug, the bending stress for making crankshaft is reduced to the 1/15 of only double base crankshaft, the 1/6 of three bearing crankshafts by this, So as to cut down influence of the bending stress for crankshaft 31 significantly, the strength and stiffness of crankshaft 31 are effectively improved.

By the comparison of above-mentioned double base and three two kinds of 31 set-up modes of crankshaft of bearing it is found that the bearing quantity on crankshaft 31 is got over More, the stiffness and strength of crankshaft 31 is also bigger, but the unitary design of existing crankcase 20 be not able to satisfy four bearing or more The crankshaft 31 of multi-support is packed into.And this problem is then not present in the split type crankcase 20 of the present embodiment, only needs in installation process After first part 21 is disassembled from second part 22, then the crankshaft 31 for installing bearing is directly directed at crankshaft slot and is put Enter, finally first part 21 is reinstalled in first part 21.It can be seen that the crankcase of the present embodiment can fit The crankshaft 31 for answering multi-support 311 can effectively solve the problem that the insufficient technological deficiency of 31 strength and stiffness of crankshaft in existing plunger pump.

Therefore in the present embodiment, bearing 311 there are six being preferably provided on crankshaft 31, and six support 311 for crankshaft 31 It is divided into equidistant five sections in its longitudinal direction.Corresponding, the number of plunger 33 is five, and each plunger 33 is distinguished It is connected on the crankshaft 31 between two neighboring bearing 311 by means of the sliding block 35 on connecting rod 34 and connecting rod 34.

In addition, crankshaft 31 preferably uses forging molding, forging processing in order to further enhance the stiffness and strength of crankshaft 31 The characteristics of be the continuity that can guarantee metal fibrous tissue, be consistent the dimension fibr tissue of forging with forging shape, metal Streamline is complete, it is ensured that part has good mechanical property and long service life.The performance of product in order to better improve, Change crankshaft 31 changes work method, and using forging technology, the metallic fibrous layer for preferably retaining raw material is not destroyed, material Grain structure follows the cross-sectional profile of the crankshaft after completing, thus the pressure acted on crankshaft each point can be greatly decreased, It ensures the intensity of material, to improve the performance of product, there is intensity height, reliable performance, service life length, manufacturing time and system Cause the advantages that originally substantially reducing.The conventionally employed direct machine-shaping of round steel bar is solved, bar processing can destroy original gold Belong to fibrous layer, leads to strength reduction, to reduce service performance and the service life of crankshaft 31.

It should be noted that, although the split-type design of the crankcase 20 in the present embodiment is to be more convenient multi-support 311 crankshaft 31 is packed into, but is not meant to it only and can be installed the crankshaft 31 of multi-support 311；The present embodiment is not meant that yet Plunger pump in, be only able to use the crankshaft 31 of multi-support 311.Those skilled in the art have the ability according to actual use demand The specific set-up mode of crankcase 20 and crankshaft 31 is selected.

Embodiment 3

The present embodiment is improvement on the basis of embodiment 1 or embodiment 2, is compared to the difference for implementing 1 or 2:

With reference to the structural schematic diagram of plunger 33 shown in Fig. 9, plunger 33 includes plunger body 311 and is arranged in plunger body Protection head 332 on 331.When plunger pump is after being used for a long time, the end of plunger 33 is easy to produce abrasion, so that it is close to destroy its Feng Xing leads to inefficiency in imbibition and discharge opeing process, and equipment damage is even be easy to cause when serious.By in this present embodiment The setting for protecting head 332 can directly replace protection head 332, without crankcase 20 is complete after protection head 332 is worn After full dismounting, by 33 integral replacing of plunger, maintenance efficiency is not only increased in this way, also reduces maintenance difficulty and maintenance cost.

In addition, a problem existing for plunger body 331 is, existing plunger body 331 is usually made of metal material, Such as steel etc., after Overheating Treatment, hardness is also only capable of reaching 55HRC or so, and plunger body 331 be one frequently by The component of power, therefore in the long-term use process, plunger body 331 is easy for the problems such as crowfoot cracks, damaged occur.For this purpose, this Plunger body 331 in embodiment is preferably made of ceramic material, especially ceramic material of the hardness greater than 70HRC.

It is described in detail in the present embodiment below in conjunction with Fig. 9, the connection type of plunger body 331 and protection head 332, plunger sheet Body 331 and protection head 332 form corresponding through-hole respectively along its axial direction, set on the plunger connector 333 being connected with sliding block It is equipped with threaded hole corresponding in through-hole, screw rod is passed through into plunger body 331 and protection 332 rear thread of head is connected to plunger connector In 333 threaded hole, such screw rod is to complete plunger body 331 and protection head 332 is fixedly connected, and plunger 33 connected It has been connected on sliding block 35.Obviously, plunger body 331 and the connection type of protection head 332 are not limited only to this one kind in plunger 33, by It is more in connection type, it does not repeat excessively then at this.

In conjunction with the embodiments 1 and embodiment 2, the motion process of plunger 33 it is as follows:

In imbibition process: the rotation band movable slider 35 of crankshaft 31 retreats, and the plunger connector 33 of 35 end of sliding block pulls screw rod, To drive plunger body 331 and protection head 332 to retreat together, to make plunger 33 relative to being fixedly connected on pump head in plunger pump On 36 relative motion of high pressure cylinder sleeve so that protection head 332 the other side cavity in formed negative pressure, due to liquid sucting valve and drain Valve is check valve, therefore emulsion can be inhaled into cavity；

In discharge opeing process: crankshaft 31 continues rotation band movable slider 35 and advances, and the intracorporal emulsion of chamber cannot be from suction at this time It is discharged, can only be drained into exhaust chamber under the action of plunger 33 through tapping valve in liquid valve, so as to complete imbibition and drain Process.

Embodiment 4

The present embodiment is improvement on the basis of embodiment 1,2 or 3, and the difference compared to embodiment 1,2 or 3 is:

With reference to the structural schematic diagram of the sliding block in the prior art of Figure 10, existing sliding block generally uses the cast aluminium knot of monoblock type Structure, the slider pin for being rotatablely connected connecting rod 34 are to be positioned at the both ends of through-hole with nylon plug, the cunning of this structure Block its structure is simple, light weight, setback pin and cost is relatively low, but it has the disadvantage in that since the hardness of cast aluminium is lower, It is easy to be scratched by oil sealing with the surface of separate cavities oil sealing mating part, to generate oil leakage phenomenon, influences the normal work of pump, need The sliding block of damage is replaced.Again because the operation replaced in the crankcase 20 of monoblock type to sliding block is very numerous It is trivial, it needs the crankshaft 31 in crankcase 20, the connection between connecting rod 34 and sliding block 35 and sliding block 35 and plunger 33 is whole It just can be carried out replacement after removing, therefore it replaces difficulty and maintenance cost is very high.On the other hand, the cooperation precision of slider pin is wanted Ask very high, because the intensity and hardness of aluminium are all relatively low, slider pin must be interference fitted wherein can be reliable and stable Fixation, otherwise the hole on sliding block for installing slider pin is easy to appear deformation, therefore its assembly difficulty is also relatively high.

It is easy to scratch oil leak, replacement sliding block difficulty and slider pin to solve sealing surfaces present in existing sliding block 35 Fit clearance be not easy the defect eliminated, with reference to Figure 11, the sliding block 35 in the present embodiment includes slider body 352, Yi Jike The slide block set 351 of disassembly being arranged on 352 outer diameter of slider body, and the slide block set 351 and the cunning are made by fastener Block body 352 is kept fixed.And preferably slider body 352 is supported by high-strength cast iron, because of the thermal expansion coefficient of high-strength cast iron It is smaller than the thermal expansion coefficient of cast aluminium, therefore deformation, size are less likely to occur by the slider body 352 that high-strength cast iron supports Stability it is more preferable, compression strength, hardness and wearability facilitate the service life for extending sliding block 35 also superior to cast aluminium.Institute It states slide block set 351 to be preferably made of stainless steel, its surface hardness can reach HRC55 or so to stainless steel after heat treatment, compare Hardness is greatly improved for cast aluminium, surface is not easy to be scratched in use, and the service life is longer.Even if in sliding block It covers under the feelings Saeka that 351 surfaces are scratched, can also easily replace slide block set 351.Slide block set 351 in actual use process Replacement do not need the first part 21 in disassembly crankcase 20, but can be directly from the position pair of the separate cavities of crankcase 20 Slide block set 351 is replaced, therefore its later maintenance is also very convenient.

Specifically, the connection type between slider body 352 and slide block set 351, sliding block sheet are described in detail in conjunction with Figure 11 The end of body 352 forms threaded hole, and the corresponding threaded hole of plunger connector 333 forms threaded rod, the outer circle of plunger connector 333 Screw thread is formed on circumferential surface；Fastener is locking nut, and the locking nut is by 333 outer circumference surface of plunger connector The slider body and slide block set 351 are fixed together by screw thread.

Further, in order to make, slider body 352 and slide block set 351 are stablized and accurate cooperation, the slider body 352 wrap First end (left end of diagram) and the second end for installing the slide block set 351 are included, the diameter of the second end is less than described First end diameter, and the First terrace for agreeing with 351 thickness of slide block set is formed in the second end and lower than described the The second step face of one step surface (in two step surfaces higher one layer)；

351 one end of slide block set is resisted against on the First terrace, and the other end, which forms, is pressed on the second step face On pressure section.The advantages of this arrangement are as follows: relative securement between slide block set 351 and slider body 352, and be not easy Existing gap.

Further, in order to guarantee the leakproofness in gap between slide block set 351 and slider body 352, in slide block set 351 and institute It states the sections inner side that First terrace leans and forms annular groove, be provided with sealing ring in the annular groove.

In the present embodiment, one end that sliding block 35 connects connecting rod 34 forms the open slot 353 for accommodating 34 end of connecting rod, Open slot 353 has the two side walls being oppositely arranged；Be equipped with slider pin 354 in through-hole in two side walls, connecting rod 34 with Slider pin 354 is rotatablely connected.In order to guarantee that slider pin 354 is firmly installed in open slot 353, at the end of two side walls Portion is also respectively facing the slider pin 354 and is provided with threaded hole, and positioning bolt 355 is mounted in threaded hole, thus to the cunning Block pin 354 is biased power.The corresponding positioning bolt 355 of slider pin 354 is provided with recessed locating slot.Positioning bolt 355 It is not single to be positioned to slider pin 354, additionally it is possible to the gap generated by dimensional tolerance difference with the through-hole on side wall is eliminated, thus Push slider pin to its main force part, and be firmly pressed against on the side wall of 35 through-hole of sliding block, to prevent slider pin 354 from producing It is raw to loosen, improve the precision and reliability of assembly.Since there are between small between the through-hole on slider pin 354 and side wall Gap, therefore compared to the assembly method of existing interference fit, assembly difficulty is also lower, is easily installed and later maintenance.

Embodiment 5

Improvement on the basis of the present embodiment is any in embodiment 1-4, the difference compared to embodiment 1-4 are:

The structural schematic diagram of existing pump head component with reference to shown in Figure 12, liquid sucting valve and tapping valve are cone valve knot Structure, by the way of arranging above and below, the advantages of this arrangement is that concentricity is high, good airproof performance, compact-sized etc..But its There is also following disadvantages: the first, the liquid sucting valve of lower section is as inconvenient in occurred removing when damage needs replacing first, first will need Heavy pump head disassembles, and carries out after removing multiple components on the outside of pump head one by one, then to components such as internal liquid sucting valves Replacement, maintenance difficulties are quite big.The second, the guiding Mian Pinch of spool enters into the hole of valve seat, occupies the area of flow section, from And limit its use scope.If hole is oversized, spool becomes heavy, and flexibility is affected, and imitates to the volume of pump Rate has an adverse effect.

The structural schematic diagram of pump head component in the present embodiment with reference to shown in Figure 13, in the plunger pump of the present embodiment, high pressure The inner cavity of cylinder sleeve 36 is respectively communicated with imbibition channel and apocenosis passage in pump head 26, and the imbibition channel and apocenosis passage connect respectively Logical imbibition chamber and exhaust chamber；The imbibition channel and apocenosis passage are respectively arranged with liquid sucting valve 23 and tapping valve 24；The imbibition Valve 23 is flap type, is arranged perpendicular to the extending direction of the sliding slot, is additionally provided with pump head in the outside of the liquid sucting valve 23 Front shroud 25 forms the channel for being connected to the imbibition chamber in the pump head front shroud 25.Its arrangement is: tapping valve 24 are arranged in top, and liquid sucting valve 23 is arranged in side, is only needed when needing replacing liquid sucting valve 23 in this way by the front cover before pump head After plate 25 is removed, it can be replaced.

Since liquid sucting valve 23 and tapping valve 24 are flap type, compared to not only volume and weight has and subtracts for cone valve It is small, and it is adapted for mount on the side of pump head, so as to liquid sucting valve 23 by way of removing pump head end cap above It is replaced.In addition, flap type will not occupy flow section product, therefore be conducive to improve the drain of liquid sucting valve 23 and tapping valve 24 With the sensitivity of imbibition efficiency and enhancing action.

Embodiment 6

Improvement on the basis of the present embodiment is any in embodiment 1-5, the difference compared to embodiment 1-5 are:

In actual use, crankcase 20 and motor 10 during installation, are had to the output shaft and song of motor 10 Otherwise the input axial adjustment of axle box 20 will generate vibration and noise in use, influence song to the position of mutual centering The working efficiency and service life of axle box 20 and motor 10.A kind of relatively conventional set-up mode is: song as shown in figure 14 The structural schematic diagram that axle box 20 and motor 10 are coupled using lower margin formula, it is with respective foundation bolt by crankcase 20 and electricity Motivation 10 is fixed on same collet, its advantage is that it is more convenient and flexible when maintenance is with installation, it does not need by lifting appliance Motor 10 and crankcase 20 can be installed on collet 50.Its centering method is to agitate crankcase 20 respectively with crowbar With motor 10, both adjusted by checking the outer diameter of shaft coupling to neutrality, for the plunger pump of middle-size and small-size flow, because of it Volume and weight is all little, therefore this is effective to neutral regulative mode, but for the plunger pump of big flow, body Long-pending and weight is all bigger, is adjusted using the mode manually agitated just very difficult.It is also needed during in simultaneously Carry out adjustment and inspection repeatedly, centering degree and efficiency, the working experience dependent on operator.

With reference to Figure 15 and Figure 16, the plunger pump of this implementation further includes base 40 and collet 50, and wherein base 40 is fixed vertically It is arranged on the collet.The two sides of base 40 are respectively mounting surface 41, motor 10 and crankcase 20, and difference is correspondingly solid Dingan County is on mounting surface 41；The output shaft and crankshaft 31 of the corresponding motor 10 of base 40 are provided with respective mounting hole, So that motor 40 is connected to each other with the crankcase 20.As a preferred embodiment, the output shaft of motor 10 and The input shaft of crankcase 20 is being connected after docking by shaft coupling, so that the input shaft of crankcase 20 can lead to again It crosses retarder or gear set transmission parts band dynamic crankshaft 31 rotates.Specifically, positional symmetry is offered in advance on two mounting surfaces 41 Installation threaded hole, the input shaft of the output shaft of motor 10 and the crankcase 20, pass through shaft coupling realize docking.Base 40 Four corners having in rectangle, corner location is fixedly connected by coupling bolt with the collet 50.It is excellent in the present embodiment Selecting base 40 is hollow frame body, excellent in order to increase the stability of equipment because the contact area of the base 40 of this structure is smaller Base 40 is fixed on collet 50 by choosing.

Above-mentioned technical proposal is the core technology scheme of the present embodiment, by the end face of crankcase 20 and motor 10 On be respectively arranged with the boss circle an of connection in advance, by this boss circle Fen Bie Pinch enter the mounting-positioning holes at 40 both ends of base In, then on end face be respectively mutually fixed to motor 10 and crankcase 20 on base 40 with bolt, to guarantee crankcase 20 With motor 10 to neutrality.Alignment, therefore 10 He of motor are had determined that when being located in processing because of 40 two sides of base Crankcase 20 is no longer needed to by adjusting to neutrality.It should be noted that those skilled in the art obviously can also be in motor 10 and crankcase 20 on the mode of positioning groove is respectively set in advance the two is first pre-fixed, do not repeat one by one then at this. It can be seen that the emulsion plunger of the present embodiment has simple installation, reliable, crankcase 20 and 10 accuracy of alignment of motor high The advantages of, and technical level and experience independent of operator.

Embodiment 7

Improvement on the basis of the present embodiment is any in embodiment 1-6, the difference compared to embodiment 1-6 are:

It generallys use between crankshaft 31 and connecting rod 34 using forced feed lubrication, i.e., is infused into oil circuit in current existing plunger pump Enter lubricating oil to make it be lubricated, then using lubrication of splashing between sliding block 35 and sliding slot, with reference to Figure 17, the lubrication of crankshaft 31 It is to be delivered lubricating oil to by gear pump in the through-hole among crankshaft 31, an oily transverse direction is bored in each bearing shell middle position respectively Through-hole among aperture and crankshaft 31 communicates, then by lateral aperture, delivers lubricating oil to the surface of bearing shell, make bearing shell with The axle journal of crankshaft 31 is lubricated.In the course of work of crankshaft, turning effort will drive lubricating oil adhered thereto to get rid of To the upper oil sump of crankcase, then by the aperture in upper oil sump, lubricating oil is delivered to the surface of sliding block 35, to complete sliding block Lubrication.This splashing lubricating system has the disadvantage that when the status of plunger pump installation is not flat, relatively high in sliding block 35 Position be difficult to be lubricated, and the other end of connecting rod 34 is also not readily available lubrication, to be easy to cause sliding block 35 and sliding Slot is sintered, so that crankcase 20 damages, and the sundries in upper oil sump also readily penetrates through aperture and enters sliding block 35 Between sliding slot, lead to sliding slot abrasion etc..

In order to solve defect present in existing splashing lubrication, respectively to 35 He of sliding block in the lubricating system of the present embodiment Crankshaft 31 carries out forced feed lubrication respectively comprising: including lubricating system, the gear oil pump, and the connection gear oil pump Circulating lubricating oil road, the gear oil pump trend lubricating oil pass through the grease pump, to the movement in the plunger pump Component carries out forced feed lubrication.

Above-mentioned technical proposal is the core technology scheme of the present embodiment, by the setting on circulating lubricating oil road, so that circulation Lubricating oil in lubricant passage way carries out forced feed lubrication during its flowing, to all moving components flowed through.And in order to keep away The high oil temperature for exempting from lubricating oil, is also connected with external oil cooling but device on circulating lubricating oil road, the external oil cooling but device and institute It states circulating lubricating oil road to be connected, to cool down the lubricating oil by the external oil cooling but device.

Specifically, with reference to Figure 18, the circulating lubricating oil routing is separately connected oil inlet pipe, the flowline of the gear oil pump And the channel on the crankcase 20 is constituted.It is distinguished by connecting rod lubrication oil circuit 312 and sliding block lubricant passage way 313 And it is connected in the circulating lubricating oil road, to complete crankshaft 31,34 other end of connecting rod to connecting rod 34, the connection of 34 one end of connecting rod Lubrication between the sliding block and sliding block 35 and sliding slot of connection.Connecting rod lubrication oil circuit 312 by the connecting rod 34 bearing shell with it is described Gap between crankshaft 31, by the internal stretch to the other end and the sliding block 34 of the connecting rod 34 of the connecting rod 34 Gap between slider pin 354, to be lubricated respectively to the both ends of the connecting rod 34.The sliding block lubricant passage way 313 wraps The lubrication channel by opening up on the sliding slot of 35 top of sliding block is included, the circulating lubricating oil road is lubricated by the sliding block Oil circuit 313.Since power of the lubricating oil in oil circuit is from gear oil pump, no matter whether installation site is smooth, not It will affect the lubricant effect of lubricating oil.And the gym suit that above-mentioned sliding block lubricant passage way 313 and connecting rod lubrication oil circuit 312 is passed through For totally-enclosed setting, dust and other impurities enter the surface of kinematic pair during will not lubricating again, are able to maintain the clear of equipment It is clean, improve service life.

It is passed in addition, the circulating lubricating oil road is additionally provided with oil circuit plinth, oil pressure sensor, oil strainer, oil level Sensor, oil temperature sensor, oil pump relief valve and oil pressure gauge.

The lubricant passage way in the present embodiment on crankshaft 31 is described in detail below with reference to Figure 19:

A1 in figure；A2；A3；A4；A5 indicates longitudinal hole.B1；B2；B3；B4；B5 expression transverse holes, A1, A2, A3, A4, A5 is distributed on circumference on cross section, and A1, A2 are located at the same end of crankshaft 31, A3, A4, and A5 is located at the another of crankshaft 31 One end, B1, B2, B3, B4 are located on each crank.B5 is bored in the outer circle of installation bearing, that is to say between two bearings.Crankshaft The oilhole of neck 1 and maneton 2 is penetrated through by longitudinal hole A1 and A2, then by transverse holes B1；Maneton 2,3,4,5 Similarly.The advantages of this setup is: lubricant passage way does not interfere with the size of crankshaft in the inner position of crankshaft 31, with And the outer dimension of bearing helps to reduce plunger so that crankshaft 31 does not need setting and increased in size for lubricant passage way Pump weight.But the hole knockout for the lubricant passage way being not meant on crankshaft is only limitted to one of the above.

Embodiment 8

With reference to Figure 20, the present embodiment provides a kind of emulsion power packs comprising implements emulsion plunger any in 1-7 Pump, wherein several plunger pumps are successively set on collet 50, the two sides of the collet 50 be respectively arranged with connection imbibition chamber and The imbibition supervisor 51 of exhaust chamber and time liquid supervisor 52, the imbibition are responsible on 51 and are additionally provided with booster pump；Every plunger pump Imbibition channel and apocenosis passage be connected to imbibition supervisor 51 and return on liquid supervisor 52.Emulsion power pack is more in this way Platform plunger pump can be used same root pipette and connect a booster pump to realize feed flow；More pumps of emulsion pump use same root Unloading liquid back pipe realizes back liquid, improves the efficiency of supply of emulsion.

Claims (9)

1. a kind of emulsion plunger, comprising:

Motor (10)；

Crankcase (20), forms the crankshaft slot for installing crankshaft (31) in the crankcase (20), and with plunger (33) phase Sliding block (35) even makees the sliding slot to reciprocatingly slide；

It is mounted in crankshaft slot described in the crankcase (20):

Crankshaft (31), the crankshaft (31) is driven by the motor (10) output shaft to rotate；

It is mounted in the sliding slot described in the crankcase (20):

Connecting rod (34), one end and the crankshaft (31) are rotatablely connected, and the other end is fixedly connected with the sliding block (35), described Under the drive of crankshaft (31), the sliding block (35) is driven to reciprocatingly slide in the sliding slot；

Plunger (33) is connected with the sliding block (35), reciprocal in high pressure cylinder sleeve (36) under the drive of the sliding block (35) Movement, to realize imbibition and drain；

It is characterized by:

The sliding block (35) includes slider body (352), and dismountable setting is on the slider body (352) outer diameter Slide block set (351), and the slide block set (351) and the slider body (352) are kept fixed by fastener.

2. emulsion plunger according to claim 1, it is characterised in that:

The end of the slider body (352) forms threaded hole, and the corresponding threaded hole of the plunger connector (333) forms Threaded rod forms screw thread on the outer circumference surface of the plunger connector (333)；

The fastener is locking nut, and the locking nut will by the screw thread on the plunger connector (333) outer circumference surface The slider body and slide block set (351) are fixed together.

3. emulsion plunger according to claim 2, it is characterised in that:

The slider body (352) includes first end and the second end for installing the slide block set (351), the second end Diameter is less than the first end diameter, and the first step for agreeing with the slide block set (351) thickness is formed in the second end Face and second step face lower than the First terrace；

Described slide block set (351) one end is resisted against on the First terrace, and the other end, which forms, is pressed on the second step Pressure section on face.

4. emulsion plunger according to claim 3, it is characterised in that:

The sections inner side that the slide block set (351) and the First terrace lean forms annular groove, in the annular groove It is provided with sealing ring.

5. emulsion plunger described in any one of -4 according to claim 1, it is characterised in that:

The slider body is made of cast iron.

6. emulsion plunger described in any one of -4 according to claim 1, it is characterised in that:

The slide block set (351) is made of stainless steel.

7. emulsion plunger described in any one of -4 according to claim 1, it is characterised in that:

One end that the sliding block (35) connects the connecting rod (34) forms the open slot for accommodating the connecting rod (34) end (353), the open slot (353) has the two side walls being oppositely arranged；

It is equipped in through-hole on the side wall slider pin (354), the connecting rod (34) and the slider pin (354) rotation connect It connects.

8. emulsion plunger according to claim 7, it is characterised in that:

The end of two side walls is also respectively facing the slider pin (354) and is provided with threaded hole, positioning bolt (355) installation In threaded hole, to be biased power to the slider pin (354).

9. emulsion plunger according to claim 8, it is characterised in that:

The corresponding positioning bolt (355) of the slider pin (354) is provided with recessed locating slot.