CN209394489U - Central water flooding eccentric shaft - Google Patents

Abstract

The utility model discloses a kind of central water flooding eccentric shafts, it includes the portion that is symmetrically installed and the eccentrically mounted portion that is connected with the portion of being symmetrically installed, it is symmetrically installed in portion and is axially arranged with water filling upper channel, water filling lower channel is axially arranged in eccentrically mounted portion, the portion that is symmetrically installed is equipped with the junction in eccentrically mounted portion makes to fill the water the communication channel that upper channel is connected with water filling lower channel；It is rationally equipped with water filling upper channel, communication channel and water filling lower channel and forms central water flooding structure, it allows the water to spray from the center of grinding wheel, rinse dust outward well from centre, realize that dust will not be adhered to coated abrasive surface and be trapped in product surface, to reduce the invalid friction between sand paper and dust and product, reach the efficiency and yield of sand paper life-time dilatation and product polishing；The injecting fluid by the way of the water filling of centre simultaneously, has preferable sealed waterproof effect, is effectively prevented the spilling of motor injection in injecting fluid, so that motor is not easy to get rusty, worn, long service life.

Description

Central water flooding eccentric shaft

Technical field

The utility model relates to sander technical fields, and in particular to a kind of central water flooding applied in sander is eccentric Axis.

Background technique

Sander is suitable for iron plate, timber, plastics, and tire surface grinding, ship, automobile, grinding tool, aircraft industry are finely thrown The operations such as paint are gone in light, burr removing, derusting.

Modern society generally uses sander, and the sander sold on the market is varied, each there is different set Meter theory makes every effort to the requirement that can reach different user.But although these sanders can be roughly satisfied requirement, but its Eccentric shaft design it is all not ingenious, bulky, heavy, and do not have water supply function, especially polishing almag produces When product, it is easy to produce inflammable, explosive phenomenon, causes personnel and property loss；For this purpose, polishing personnel can only be in advance toward polishing It waters and polishes again or one-handed performance sander on object, another holds water pipe and waters, this uses sander Inconvenient, safety coefficient is not also high, in addition uses outside water flooding regime that liquid is not enable directly to rinse in the middle part of dust collection Position, because the principle dust of centrifugal force can focus on polishing centre, so that dust will not be adhered to coated abrasive surface and delay In product surface, to increase the invalid friction between sand paper and dust and product, sand paper service life and production are shortened into face The efficiency and yield of product polishing.

Utility model content

In view of the above deficiencies, the purpose of the utility model is to provide a kind of smart structural design, rationally, have center The central water flooding eccentric shaft of water-filling function.

To achieve the above object, technical solution provided by the utility model is: a kind of central water flooding eccentric shaft comprising The eccentrically mounted portion for being symmetrically installed portion and being connected with the portion of being symmetrically installed, it is described be symmetrically installed in portion be axially arranged with water filling on lead to Road, is axially arranged with water filling lower channel in eccentrically mounted portion, and the junction for being symmetrically installed portion and eccentrically mounted portion, which is equipped with, to be made to infuse The communication channel that channel waterborne is connected with water filling lower channel, the upper end of the water filling upper channel are equipped with radially expanded formation sealing and connect Interface, the bottom of the sealed connection mouth are in back taper, and the bottom surface in the eccentrically mounted portion is equipped with installation cavity, the water filling lower channel It is connected with the installation cavity.

As a kind of improvement of the utility model, the sealed connection mouth is equipped with top pressure closure, sets on the top pressure closure There is the central through hole axially penetrated through, the radially enlarged formation in the top of the top pressure closure can be pressed in the upper end for being symmetrically installed portion The sealing in face, the lower part of the top pressure closure, which radially reduces, forms auxiliary section compatible with the sealed connection mouth, the cooperation Portion's insertion is tightly connected in mouth, and the auxiliary section is equipped with the card slot for being used to install oil sealing, is arranged with oil sealing on the card slot.It adds There is top pressure closure, be easily assembled, and effectively promote the compactness of cooperation, is not easy to reveal.

As a kind of improvement of the utility model, it is equipped with oil sealing in the central through hole, promotes the compactness of cooperation.

As a kind of improvement of the utility model, the portion of being symmetrically installed includes sequentially connected rotor department of assembly, bearing The diameter of socket part and oil sealing auxiliary section, the rotor department of assembly, bearing socket part and oil sealing auxiliary section successively increases in step-like Greatly.

The top of rotor department of assembly is used to mutually install with the bearing on upper lid, and lower part is used to install blade rotor, bearing holder (housing, cover) Socket part is used to mutually install with the bearing on lower lid.The bearing socket part is relatively large in diameter, and support strength is big, good operation stability. Oil sealing auxiliary section is used to match with the oil sealing on lower lid, effectively promotes cooperation compactness.

As a kind of improvement of the utility model, the upper position in the eccentrically mounted portion is to side direction protrusion, this is partially The lower position of heart mounting portion is raised to another side direction.

As a kind of improvement of the utility model, the opening inner edge of the installation cavity is equipped with oil sealing fitting groove.

As a kind of improvement of the utility model, the degree of eccentricity and installation of the water filling lower channel relative to water filling upper channel Chamber is consistent relative to the degree of eccentricity of water filling upper channel.

The utility model has the following beneficial effects: the utility model smart structural design, is rationally equipped with water filling upper channel, connection Road and water filling lower channel form central water flooding structure, allow the water to spray from the center of grinding wheel, can make dust therefrom Between rinse well outward, realize that dust will not be adhered to and coated abrasive surface and be trapped in product surface, to reduce sand paper and dust And the invalid friction between product, reach the efficiency and yield of sand paper life-time dilatation and product polishing；In using simultaneously Between the mode injecting fluid that fills the water, there is preferable sealed waterproof effect, be effectively prevented motor injection in injecting fluid Spilling, so that motor is not easy to get rusty, worn, prolong the service life；In addition the utility model compact overall structure is simply easy to It realizes, is conducive to wide popularization and application.

With reference to the accompanying drawing with embodiment, the present invention will be further described.

Detailed description of the invention

Fig. 1 is the schematic perspective view 1 of the utility model.

Fig. 2 is the schematic perspective view 2 of the utility model.

Fig. 3 is the schematic cross-sectional view of the utility model.

Fig. 4 is the schematic diagram of application structure of the utility model.

Specific embodiment

Embodiment, referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of central water flooding eccentric shaft provided in this embodiment comprising right Claim mounting portion 1 and is symmetrically installed the eccentrically mounted portion 2 that portion 1 is connected with this.

Described be symmetrically installed in portion 1 is axially arranged with water filling upper channel 11, is axially arranged with water filling lower channel in eccentrically mounted portion 2 12, it is described be symmetrically installed portion 1 and the junction in eccentrically mounted portion 2 and be equipped with make to fill the water upper channel 11 and water filling lower channel 12 is connected Communication channel 13, preferably, the spacing between the axle center of communication channel 13 and the axle center for filling the water upper channel 11 is equal to communication channel 13 The spacing in axle center and the axle center of water filling lower channel 12, fills the water more smoothly in this way.

The upper end of the water filling upper channel 11 is equipped with radially expanded formation and is tightly connected mouth 14, the bottom of the sealed connection mouth 14 Portion is in back taper, and the bottom surface in the eccentrically mounted portion 2 is equipped with installation cavity 21, and the water filling lower channel 12 is connected with the installation cavity 21 It is logical.The opening inner edge of the installation cavity 21 is equipped with oil sealing fitting groove 22.Oil sealing and small axle center on the oil sealing fitting groove 22 match It closes.Preferably, upper bearing (metal) is assembled in installation cavity 21 to recessed formation recess in the end face center position in the installation cavity 21 Afterwards, since recess is to inwardly concave, the inner ring of bearing is the top surface for not reaching installation cavity 21, reduces friction.

Preferably, the center line of water filling lower channel 12 and installation cavity 21 is on the same axis, to fill the water upper channel 11 as base Standard, i.e., water filling lower channel 12 relative to water filling upper channel 11 degree of eccentricity D1 and installation cavity 21 relative to fill the water upper channel 11 it is inclined Heart degree D2 is consistent, and flood effectiveness is good.

Specifically, the portion 1 that is symmetrically installed includes that sequentially connected rotor department of assembly 15, bearing socket part 16 and oil sealing are matched The diameter in conjunction portion 17, the rotor department of assembly 15, bearing socket part 16 and oil sealing auxiliary section 17 is sequentially increased in step-like.Rotor The top of department of assembly 15 is used to mutually install with the bearing on upper lid, and lower part is used to install blade rotor, and bearing socket part 16 is used to It is mutually installed with the bearing on lower lid.The bearing socket part 16 is relatively large in diameter, and support strength is big, good operation stability.Oil sealing is matched Conjunction portion 17 is used to match with the oil sealing on lower lid, effectively promotes cooperation compactness.

The upper position in the eccentrically mounted portion 2 convexes to form the first protrusion 23 to a side direction, the eccentrically mounted portion 2 Lower position convexes to form the second protrusion 24 to another side direction, and the height of projection of the second protrusion 24 is higher than the first protrusion 23.? When rotation, vibrating effect can be generated, to achieve the purpose that polishing.The crowning of first protrusion 23 and the second protrusion 24 is circular arc Face.

Preferably, being equipped with top pressure closure 3 on the sealed connection mouth 14, which is equipped with and passes through its axial direction The central through hole worn, the radially enlarged formation in the top of the top pressure closure 3 can press the sealing in the upper surface in the portion that is symmetrically installed 1 Portion, the lower part of the top pressure closure 3, which radially reduces, forms auxiliary section compatible with the sealed connection mouth 14, auxiliary section insertion It is tightly connected in mouth 14, and the auxiliary section is equipped with the card slot for being used to install oil sealing, is arranged with oil sealing on the card slot.It is equipped with close Capping cover 3, is easily assembled, and effectively promotes the compactness of cooperation, is not easy to reveal.It is equipped with oil sealing in the central through hole, mentions Rise the compactness of cooperation.

When installation, small axle center 4 by bearing be arranged on installation cavity 21, and the small axle center 4 be equipped with under the water filling The water receiving channel that channel 12 is connected to each other, on water filling lower channel 12, it is logical that the water receiving is protruded into lower end for the upper end setting of water needle 5 out Road, the lower end in the water receiving channel are equipped with internal screw thread compatible with chassis screw 6, and grinding wheel 7 is screwed by chassis screw 6 and is connect Aquaporin is fixed on small axle center 4, and chassis screw 6 is equipped with the exhalant canal being connected to each other with water receiving channel.

When work, referring to fig. 4, water is flowed through after water filling upper channel 11, communication channel 13 and water filling lower channel 12 from grinding wheel 7 Center sprays, and dust can be made to rinse well outward from centre, realizes that dust will not be adhered to coated abrasive surface and be trapped in 8 surface of product reaches sand paper life-time dilatation and product is beaten to reduce the invalid friction between sand paper and dust and product The efficiency and yield of mill；The injecting fluid by the way of the water filling of centre simultaneously, has preferable sealed waterproof effect, effectively The spilling for preventing motor injection in injecting fluid makes motor be not easy to get rusty, wear, long service life.

According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right Some modifications and changes of the utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, to the greatest extent It is used some specific terms in pipe this specification, these terms are merely for convenience of description, not to the utility model Constitute any restrictions.As described in the utility model above-described embodiment, using other obtained from same or similar structure The sander of structure, in scope of protection of the utility model.

Claims (7)

1. a kind of central water flooding eccentric shaft, which is characterized in that it includes the portion that is symmetrically installed and is connected with the portion of being symmetrically installed Eccentrically mounted portion, described be symmetrically installed in portion are axially arranged with water filling upper channel, water filling lower channel are axially arranged in eccentrically mounted portion, The portion that is symmetrically installed is equipped with the communication channel for making water filling upper channel be connected with water filling lower channel with the junction in eccentrically mounted portion, The upper end of the water filling upper channel is equipped with radially expanded formation and is tightly connected mouth, and the bottom of the sealed connection mouth is in back taper, institute The bottom surface for stating eccentrically mounted portion is equipped with installation cavity, and the water filling lower channel is connected with the installation cavity.

2. central water flooding eccentric shaft according to claim 1, it is characterised in that: the sealed connection mouth is equipped with sealing top Lid, the top pressure closure are equipped with the central through hole axially penetrated through, and the radially enlarged formation in the top of the top pressure closure can press Sealing in the upper surface for being symmetrically installed portion, the lower part of the top pressure closure radially reduces to be formed mutually fits with the sealed connection mouth The auxiliary section matched, auxiliary section insertion is tightly connected in mouth, and the auxiliary section is equipped with the card slot for being used to install oil sealing, the card slot On be arranged with oil sealing.

3. central water flooding eccentric shaft according to claim 2, it is characterised in that: be equipped with oil sealing in the central through hole.

4. central water flooding eccentric shaft according to claim 1, it is characterised in that: the portion of being symmetrically installed includes being sequentially connected Rotor department of assembly, bearing socket part and oil sealing auxiliary section, the rotor department of assembly, bearing socket part and oil sealing auxiliary section it is straight Diameter is sequentially increased in step-like.

5. central water flooding eccentric shaft according to claim 1, it is characterised in that: the upper position in the eccentrically mounted portion to The lower position of one side direction protrusion, the eccentrically mounted portion is raised to another side direction.

6. central water flooding eccentric shaft according to claim 1, it is characterised in that: the opening inner edge of the installation cavity is equipped with oil Encapsulate slot allocation.

7. central water flooding eccentric shaft described in any one of -6 according to claim 1, it is characterised in that: the water filling lower channel The degree of eccentricity relative to water filling upper channel is consistent relative to the water filling degree of eccentricity of upper channel with installation cavity.