CN204729249U - Minipump - Google Patents

Abstract

The utility model discloses a kind of minipump, comprise motor, drain pan, eccentric shaft, cylinder and connecting rod.Described drain pan is installed on described motor.Described eccentric shaft is connected with the motor shaft of described motor.Described cylinder is installed on described drain pan.Described link tilt inserts described eccentric shaft.Described connecting rod top is provided with protuberance, and the bottom surface of described cylinder is provided with the groove be matchedly connected with described protuberance; The end face of described cylinder is provided with oil storage tank, and described cylinder is provided with the through hole being communicated with described oil storage tank and described groove.The minipump of the utility model mode of execution is in the process of running, lubricant oil in oil storage tank can flow to the surface of described protuberance and described groove, serve the effect of lubrication, reduce the frictional force between described protuberance and described groove, and then extend the working life of described minipump and add the stability of described minipump service behaviour.

Description

Minipump

Technical field

The utility model relates to field of vacuum, particularly relates to a kind of minipump.

Background technique

Current minipump interferes in the process of constantly aspirating in order to avoid the arm body of connecting rod and the bottom of cylinder, thus is provided with protuberance at the top of connecting rod, is provided with the groove matched with protuberance in cylinder bottom.But in minipump movement process, because of the service behaviour affecting vacuum pump compared with conference that rubs when protuberance operates in groove, even cause minipump to work.

Model utility content

The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model provides a kind of minipump.

The minipump of the utility model mode of execution comprises motor, drain pan, eccentric shaft, cylinder and connecting rod.Described drain pan is installed on described motor.Described eccentric shaft is connected with the motor shaft of described motor.Described cylinder is installed on described drain pan.Described link tilt inserts described eccentric shaft.Described connecting rod top is provided with protuberance, and the bottom surface of described cylinder is provided with the groove be matchedly connected with described protuberance; The end face of described cylinder is provided with oil storage tank, and described cylinder is provided with the through hole being communicated with described oil storage tank and described groove.

The minipump of the utility model mode of execution drives described eccentric shaft turns when described electric machine rotation, and described eccentric shaft drives the protuberance of described connecting rod to do periodic rotational movements in described groove.Described connecting rod does in the process of cyclical movement, and the gap between described protuberance and described groove is that suddenly big or suddenly small rule changes.When changing from small to big in gap, certain negative pressure is formed between described protuberance and described groove, lubricant oil in described oil storage tank is inhaled into the surface of described groove and forms lubricant film between described protuberance and described groove, thus the frictional force reduced between described protuberance and described groove, reduce the wearing and tearing of described protuberance and described groove, and then extend the working life of described minipump and add the stability of described minipump service behaviour.

In some embodiments, solid self lubricant material is coated on the surface of described protuberance and described groove.

In some embodiments, described solid self lubricant material is teflon.

In some embodiments, described oil storage tank is located at directly over described groove.

In some embodiments, described oil storage tank and described cylinder one-body molded.

In some embodiments, described oil storage tank is cylindrical.

In some embodiments, the intersecting line that the movement locus of described protuberance and described through hole are formed with described groove staggers.

In some embodiments, the bottom surface of described cylinder is provided with the depressed part of ring-type around described groove.

In some embodiments, described cylinder is roughly square.

Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of mode of execution, wherein:

Fig. 1 is the schematic top plan view of the minipump of the utility model mode of execution.

Fig. 2 is the generalized section of A-A in Fig. 1.

Fig. 3 is the schematic perspective view of the cylinder of the minipump of the utility model mode of execution.

Fig. 4 is the generalized section of the cylinder of the minipump of the utility model mode of execution.

Embodiment

Be described below in detail mode of execution of the present utility model, the example of described mode of execution is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the mode of execution be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection or can communication mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.

Disclosing hereafter provides many different mode of executions or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various mode of execution and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.

Refer to Fig. 1-4, the minipump 100 of the utility model mode of execution comprises motor 10, drain pan 20, eccentric shaft 30, cylinder 40 and connecting rod 50.Drain pan 20 is installed on motor 10, and motor shaft 11 stretches in drain pan 20.Eccentric shaft 30 to be arranged in drain pan 20 and to be connected with the motor shaft 11 of motor 10.Cylinder 40 is installed on drain pan 20.Connecting rod 50 tilts to insert eccentric shaft 30.Connecting rod 50 is provided with protuberance 51 away from the top of eccentric shaft, and the bottom surface of cylinder 40 is provided with the groove 41 be matchedly connected with protuberance 51.The end face of cylinder 40 is provided with oil storage tank 42, and cylinder 40 is provided with the through hole 43 being communicated with oil storage tank 42 and groove 41.

The minipump 100 of the utility model mode of execution drives eccentric shaft 30 to rotate when motor 10 rotates, the protuberance 51 of eccentric shaft 30 drivening rod 50 does periodic rotational movements in groove 41.Connecting rod 50 does in the process of cyclical movement, and the gap between protuberance 51 and groove 41 is that suddenly big or suddenly small rule changes.When changing from small to big in gap, certain negative pressure is formed between protuberance 51 and groove 41, lubricant oil in oil storage tank 42 is inhaled into the surface of groove 41 and forms lubricant film between protuberance 51 and groove 41, thus the frictional force reduced between protuberance 51 and groove 41, reduce the wearing and tearing of protuberance 51 and groove 41, and then extend the working life of minipump 100 and add the stability of minipump 100 service behaviour.

Further, solid self lubricant material can be coated on the surface of protuberance 51 and groove 41, such as teflon.

So, can the lubricant oil in oil storage tank 42 when being finished protuberance 51 and groove 41 can form the lubricating film of solid, further ensure the lubricity of protuberance 51 and groove 41.

In some embodiments, oil storage tank 42 is located at directly over groove 41.

So, through hole 43 can make vertical through hole 43, makes the manufacture process of through hole 43 simpler and easy, decreases the manufacture cost of cylinder 40, reduce resistance when lubricant oil flows to groove 41 surface simultaneously, guarantee that lubricant oil can flow to the surface of groove smoothly thus play the object of lubrication.

In some embodiments, oil storage tank 42 is one-body molded with cylinder 40.

So, oil storage tank 42 is directly formed on cylinder 40, not only reduces the volume of minipump 100, also facilitates the installation of minipump 100.

In some embodiments, oil storage tank 42 is cylindrical.

So, cylinder 40 is easily manufactured, reduces the manufacture cost of cylinder 40.Such as oil storage tank 42 can directly obtain circular blind hole as oil storage tank 42 with the processing mode of boring, or directly casts and obtain.

In some embodiments, the intersecting line that the movement locus of protuberance 51 and through hole 43 are formed with groove 41 staggers.

So, the protuberance 51 of connecting rod 50 can not be collided with the lower limb of through hole 43 thus cause the active force in certain direction of connecting rod 50 to strengthen suddenly, ensures further connecting rod 50 stress balance thus rotate evenly in movement process.Meanwhile, owing to easily wearing and tearing in the place of passing through mutually of through hole 43 and groove 41, protuberance 51 staggers with the lower limb of through hole 43 to also avoid while wearing and tearing occur cylinder 40 and makes a noise in movement process.

In some embodiments, the bottom surface of cylinder 40 is provided with the depressed part 44 of ring-type around groove 41.

So, the height in the bottom center region of cylinder 40 is lower than the height in outside, and larger noise is caused in the bottom surface preventing minipump 100 arm body 54 of connecting rod 50 in movement process from colliding cylinder 40.

In some embodiments, cylinder 40 is roughly square.

So, minipump 100 is easily located in the process of installing, and can not rotate after installing.

Particularly, minipump 100 also comprises piston 60, valve seat 70, upper cover 80 and jump ring 90.Cylinder 40 is formed with four and runs through the bottom surface of cylinder 40 and the mounting hole 45 of end face.Piston 60 socket is arranged in mounting hole 45.Valve seat 70 is located on cylinder 40, and is provided with air-intake valve plate (not shown) and valve block (not shown) of giving vent to anger.Upper cover 80 is installed on valve seat 70, and is formed with inlet hole 81.The outer side surface of drain pan 20, cylinder 40, valve seat 70 and upper cover 80 is provided with multiple draw-in groove 46, and jump ring 90 is installed on draw-in groove 46 and drain pan 20, cylinder 40, valve seat 70 and upper cover 80 is fixed together.So, the assembling of minipump 100 and unloading process simple.Upper cover 80 is provided with air-inlet cavity 83, outlet chamber 83 and steam outlet pipe 84.Cylinder 40 is provided with guiding gutter 47, and air-inlet cavity 83 is connected with piston 60 by the guiding gutter 47 of cylinder 40.Outlet chamber 83 is communicated with steam outlet pipe 84 and piston 60.The end face of upper cover 80 is vertically provided with outlet nozzle 85, and steam outlet pipe 84 is formed in outlet nozzle 85.The top of outlet nozzle 85 is coniform, facilitates tracheae (not shown) cover to receive on outlet nozzle 85 like this.

Connecting rod 50 comprises balance staff 52 and swing member 53, and one end of balance staff 52 tilts to be inserted on eccentric shaft 30, and the other end inserts in swing member 53.So, time eccentric shaft 30 rotates, swing member 53 can be driven to swing by balance staff 52.The top that swing member 53 is provided with is provided with multiple arm body 54, and each arm body 54 contacts with piston 60.When connecting rod 50 rotates, arm body 54 periodically can move and make piston 60 compress or stretch.

The working procedure of minipump 100 is substantially as follows: motor 10 does periodic rotary motion by eccentric shaft 30 drivening rod 50.Time changing from small to big in gap between protuberance 51 and groove 41, the lubricant oil in oil storage tank 42 is drawn onto on the surface of protuberance 51 and groove 41, thus reaches the effect of lubrication.On the other hand, arm body 54 drives piston 60 to do Tension and Compression motion, and when piston 60 Tensile, air-intake valve plate is opened, and valve block of giving vent to anger is closed, and gas flows in piston 60 from suction port 81 after air-inlet cavity 83; When piston 60 by compression time, gas in piston 60 orders about air-intake valve plate and closes and valve block unlatching of giving vent to anger, gas in piston 60 is discharged outside successively after valve block of giving vent to anger, outlet chamber 83 and steam outlet pipe 84, so circulates, reaches the object of lasting air inlet and exhaust.

In the description of this specification, specific features, structure, material or feature that the description of reference term " mode of execution ", " some mode of executions ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described mode of execution or example are contained at least one mode of execution of the present utility model or example.In this manual, identical mode of execution or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more mode of execution or example.

Although illustrate and described mode of execution of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these mode of executions when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.

Claims (9)

1. a minipump, is characterized in that, comprising:

Motor, has overhanging motor shaft;

Be installed on the drain pan on described motor;

To be installed in described drain pan and the eccentric shaft be connected with the motor shaft of described motor;

Be installed on the cylinder on described drain pan; And

Tilt to insert the connecting rod of described eccentric shaft;

Described connecting rod top is provided with protuberance, and the bottom surface of described cylinder is provided with the groove be matchedly connected with described protuberance; The end face of described cylinder is provided with oil storage tank, and described cylinder is provided with the through hole being communicated with described oil storage tank and described groove.

2. minipump as claimed in claim 1, it is characterized in that, solid self lubricant material is coated on the surface of described protuberance and described groove.

3. minipump as claimed in claim 2, it is characterized in that, described solid self lubricant material is teflon.

4. minipump as claimed in claim 1, it is characterized in that, described oil storage tank is located at directly over described groove.

5. minipump as claimed in claim 1, is characterized in that, described oil storage tank and described cylinder one-body molded.

6. minipump as claimed in claim 5, it is characterized in that, described oil storage tank is cylindrical.

7. minipump as claimed in claim 1, is characterized in that, the intersecting line that the movement locus of described protuberance and described through hole are formed with described groove staggers.

8. minipump as claimed in claim 1, it is characterized in that, the bottom surface of described cylinder is provided with the depressed part of ring-type around described groove.

9. minipump as claimed in claim 1, it is characterized in that, described cylinder is roughly square.