CN205908427U - Electromagnetic hydraulic pump - Google Patents

Abstract

The utility model discloses an electromagnetic hydraulic pump, including the cylinder cap, set up the coil assembly in the cylinder cap, it has piston assembly to go back the cartridge in the cylinder cap, is provided with the circumferential location structure between the inner wall of piston assembly and cylinder cap with the fixed angle of piston assembly in the cylinder cap. Through with establishing the circumferential location structure between piston assembly and the cylinder cap inner wall, fix a position the two each other in circumference, prevent effectively that piston assembly is at round during operation, because the power input is not and there is circumference fixed, the piston rod that causes is rotatory at the relative cylinder cap of circumference, it is not hard up to arouse from this that the piston assembly position takes place vibrations, cause the condition of pump body weeping even, make piston assembly and cylinder cap upwards fixed firm in week through the circumferential location structure, piston rod motion scope has further been restricted, make it move in the direction of needs. To summer up, the utility model provides an electromagnetic hydraulic pump has solved current electromagnetic hydraulic pump structure effectively and has set up unreasonable vibration or the sealed technical problem who does not tightly wait of causing.

Description

A kind of electromagnetic liquid press pump

Technical field

This utility model is related to technical field of hydraulic equipment, more particularly, it relates to a kind of electromagnetic liquid press pump.

Background technology

Hydraulic pump is a kind of Hydraulic Elements providing fluid under pressure for hydraulic drive, is one kind of pump.Its function is handle The mechanical energy of engine such as motor and internal combustion engine etc. is converted into the pressure energy of liquid.Main inclusion gear pump, vane pump and post Plug pump, wherein electromagnetic liquid press pump are exactly the one kind of the plunger displacement pump being driven using electromagnetic principle.

It to be all to rely on the principle of sealed volume change to be operated that such hydraulic pump is most of, therefore commonly referred to as holds Long-pending formula hydraulic pump.Plunger or piston are contained in one sealed volume of formation in cylinder body, make piston reciprocation move by electromagnetic action, when It is formed for partial vacuum when sealed volume is changed from small to big, so that fluid in fuel tank under atmospheric pressure effect, is backed down through fuel sucking pipe unidirectional Valve enters oil pocket and realizes oil suction, conversely, when from large to small, the fluid that is filled in chamber will back down check valve and flow into system and reality Now press oil.So the mechanical energy that prime mover inputs just is converted into the pressure energy of liquid by hydraulic pump, hydraulic pump just constantly oil suction And force feed.

Inventor finds that such hydraulic pump of the prior art also has certain technical problem, is mainly reflected in structure and sets Put unreasonable, easily displacement causes to connect insecure internal piston, has vibrating noise, what situation was serious even has oil leak during work Situation occur.

In sum, how to efficiently solve that the setting of existing electromagnetic hydraulic pressure pump configuration is unreasonable to be caused to vibrate or seal not tight Deng technical problem, be current those skilled in the art's urgent problem.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of electromagnetic liquid press pump, and the structure of this electromagnetic liquid press pump sets Meter can efficiently solve that the setting of existing electromagnetic hydraulic pressure pump configuration is unreasonable to cause to vibrate or seal not technical problem tightly etc..

In order to achieve the above object, the following technical scheme of this utility model offer:

A kind of electromagnetic liquid press pump, including cylinder cap, the coil assembly being arranged in cylinder cap, is also fitted with piston in described cylinder cap Assembly, is provided with circumferential positioning structure with fixing described piston component in institute between the inwall of described piston component and described cylinder cap State the angle in cylinder cap.

Preferably, in above-mentioned electromagnetic liquid press pump, the lower end of described cylinder cap inner circumferential is provided with and is fixed as one with described cylinder cap Back-up ring structure, described circumferential positioning structure is located at described back-up ring locations of structures.

Preferably, in above-mentioned electromagnetic liquid press pump, described circumferential positioning structure includes being arranged at described piston component end Positioning convex and the groove being arranged at described back-up ring structure inner circumferential, described positioning convex is cooperated with described groove.

Preferably, in above-mentioned electromagnetic liquid press pump, described positioning convex is specially evenly distributed on described piston component end Three positioning keys of periphery.

Preferably, in above-mentioned electromagnetic liquid press pump, the front end of described piston component is additionally provided with one-way valve structures.

Preferably, in above-mentioned electromagnetic liquid press pump, in described cylinder cap, it is fitted with oil nozzle structure, described oil nozzle structure and described list Cooperate to valve arrangement.

Preferably, in above-mentioned electromagnetic liquid press pump, the other end of described piston component is fitted with total for positioning described coil The coil brace inner sleeve becoming.

The electromagnetic liquid press pump that this utility model provides, including cylinder cap, the coil assembly being arranged in cylinder cap, in described cylinder cap Also it is fitted with piston component, be provided with circumferential positioning structure between the inwall of described piston component and described cylinder cap with fixing described Angle in described cylinder cap for the piston component.The technical scheme that this utility model provides, by by piston component and inboard wall of cylinder cover Between set circumferential positioning structure, the two is mutually located in circumference, effectively prevents piston component in round work, due to power Input and do not have circumferentially fixed, the piston rod causing rotates in circumferentially opposed cylinder cap, thus cause piston component position to occur Vibrations loosen, or even cause the situation of pump housing leakage, make piston component fix in the circumferential with cylinder cap by circumferential positioning structure Firmly, further limit piston rod movement scope, make it can only move in the direction needing.In sum, this utility model The electromagnetic liquid press pump providing efficiently solve the setting of existing electromagnetic hydraulic pressure pump configuration unreasonable cause to vibrate or seal not tight etc. Technical problem.

Brief description

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

The cross-sectional view in piston component position for the electromagnetic liquid press pump that Fig. 1 provides for this utility model embodiment；

The side structure schematic view in piston component position for the electromagnetic liquid press pump that Fig. 2 provides for this utility model embodiment, Fig. 1 does the structural representation of section for Fig. 2 from a-a position.

In accompanying drawing, labelling is as follows:

Cylinder cap 1, back-up ring structure 1-1, piston component 2, positioning convex 2-1.

Specific embodiment

This utility model embodiment discloses a kind of electromagnetic liquid press pump, is not conformed to solving existing electromagnetic hydraulic pressure pump configuration setting Reason causes to vibrate or seal not technical problem tightly etc..

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1, Fig. 2, electromagnetic liquid press pump the cuing open in piston component position that Fig. 1 provides for this utility model embodiment Face structural representation；The side-looking structure in piston component position for the electromagnetic liquid press pump that Fig. 2 provides for this utility model embodiment is shown It is intended to.

The electromagnetic liquid press pump that this utility model embodiment provides, including cylinder cap 1, the coil assembly that is arranged in cylinder cap 1, institute State and in cylinder cap 1, be also fitted with piston component 2, between described piston component 2 and the inwall of described cylinder cap 1, be provided with circumferentially positioned knot Structure is with fixing angle in described cylinder cap 1 for the described piston component 2.

Wherein the optional design of circumferential positioning structure has a lot, including the phase reaching circumference by mechanical concaveconvex structure Mutually lock, or circumference steps up the requirement that structure all can complete the technical program, concrete condition is electromagnetic pump depending on use environment Concrete condition determine.

The technical scheme that this utility model provides, by circumferential positioning structure will be set between piston component and inboard wall of cylinder cover, The two is mutually located in circumference, effectively prevents piston component in round work, because power inputs and does not have circumference solid Fixed, the piston rod causing rotates in circumferentially opposed cylinder cap, thus causes piston component position to occur vibrations to loosen, or even causes pump The situation of body drain liquid, makes piston component and cylinder cap fixation in the circumferential by circumferential positioning structure, further limit work Stopper rod range of movement, makes it can only move in the direction needing.In sum, the electromagnetic liquid press pump that this utility model provides is effective Solve that the setting of existing electromagnetic hydraulic pressure pump configuration is unreasonable to cause to vibrate or seal not technical problem tightly etc..

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, The lower end of described cylinder cap 1 inner circumferential is provided with back-up ring structure 1-1 being fixed as one with described cylinder cap 1, described circumferential positioning structure position In described back-up ring structure 1-1 position.

The present embodiment provides handy technical scheme in order to the axial location of piston rod is defined in setting gear in the range of cylinder cap Coil structures, preferably design are back-up ring structure and cylinder cap integrally casting machine-shaping, can constitute sealing cavity in fact with piston rod Existing piston output campaign.

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, Described circumferential positioning structure includes being arranged at the positioning convex 2-1 of described piston component 2 end and is arranged at described back-up ring structure The groove of 1-1 inner circumferential, described positioning convex 2-1 and described groove cooperate.

The technical scheme that the present embodiment provides is passed through to arrange positioning convex in piston component end, and sets in back-up ring structure Put the groove structure cooperating realize circumferentially positioned, assembling when by piston component load cylinder cap in, make positioning convex sink to Groove i.e. achievable piston component is circumferentially positioned with cylinder cap, and structure is simple to be implemented easily.

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, Described positioning convex 2-1 is specially evenly distributed on three positioning keys of described piston component 2 end periphery.By the present embodiment The scheme being uniformly arranged three positioning keys in piston component end further enhancing the circumferentially positioned effect of the two, and order positioning is more Plus firmly be difficult to damage under external force.

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, The front end of described piston component 2 is additionally provided with one-way valve structures.

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, It is fitted with oil nozzle structure, described oil nozzle structure is cooperated with described one-way valve structures in described cylinder cap 1.

For optimizing technique scheme further, in above-mentioned electromagnetic liquid press pump on the basis of above-described embodiment preferably, The other end of described piston component 2 is fitted with the coil brace inner sleeve for positioning described coil assembly.

In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The wide scope consistent with features of novelty.

Claims (7)

1. a kind of electromagnetic liquid press pump, including cylinder cap, the coil assembly being arranged in cylinder cap, is also fitted with piston set in described cylinder cap Part is it is characterised in that be provided with circumferential positioning structure with fixing described work between the inwall of described piston component and described cylinder cap Angle in described cylinder cap for the plug assembly.

2. electromagnetic liquid press pump according to claim 1 it is characterised in that the lower end of described cylinder cap inner circumferential be provided with described The back-up ring structure that cylinder cap is fixed as one, described circumferential positioning structure is located at described back-up ring locations of structures.

3. electromagnetic liquid press pump according to claim 2 it is characterised in that described circumferential positioning structure include being arranged at described The positioning convex of piston component end and the groove being arranged at described back-up ring structure inner circumferential, described positioning convex and described groove phase Mutually coordinate.

4. electromagnetic liquid press pump according to claim 3 is it is characterised in that described positioning convex is specially evenly distributed on institute State three positioning keys of piston component end periphery.

5. electromagnetic liquid press pump according to claim 4 it is characterised in that the front end of described piston component be additionally provided with unidirectional Valve arrangement.

6. electromagnetic liquid press pump according to claim 5 is it is characterised in that being fitted with oil nozzle structure in described cylinder cap, described Oil nozzle structure is cooperated with described one-way valve structures.

7. electromagnetic liquid press pump according to claim 6 it is characterised in that the other end of described piston component be fitted with for Position the coil brace inner sleeve of described coil assembly.