CN215039034U

CN215039034U - Cooling mechanism of water drill

Info

Publication number: CN215039034U
Application number: CN202120544802.4U
Authority: CN
Inventors: 施华平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-07
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a cooling body of water bores, including well lid and output shaft, be provided with first cavity in the well lid, the output shaft is provided with the second cavity along the axial, the rear end of output shaft stretches into in the well lid, the outer wall of the rear end of output shaft and/or the second cavity inner wall of the rear end of output shaft and/or the terminal surface of the rear end of output shaft is provided with the sealing member, the sealing member with well lid sealing contact, first cavity with the second cavity is linked together. The utility model discloses simple structure, convenient to use cover in through and set up water supply connector, water supply connector's first cavity is direct to be linked together with the third cavity of output shaft through the second cavity of well lid, need not to set up other parts, and compact structure, light in weight set up and can ensure the leakproofness at the sealing member of output shaft rear end outer wall or third cavity inner wall, prevent that rivers from going into other parts, prolong the life of each part.

Description

Cooling mechanism of water drill

Technical Field

The utility model relates to an electric tool technical field especially relates to a cooling body of water brill.

Background

The water drill, the name is diamond drill with water source, short diamond drill for short, can drill air conditioner hole, water heater hole, bathroom heater hole, lampblack absorber hole, exhaust fan hole, gas pipeline hole and the like, and can also realize new door opening of concrete bearing wall, ventilation pipeline opening, fire pipeline drilling, wire casing opening, blasting drilling, reinforcing drilling and the like.

The water drill conveys water to cool the drill bit and remove chips during rotation of the output shaft. The existing method generally adopts a copper bent pipe which is communicated with an external water source, and cooling water is introduced into an output shaft from the tail part of the output shaft through the copper bent pipe and then is sprayed out from the head part of the output shaft. By adopting the mode, the cost is high, a large amount of manpower and material resources are wasted, the roundness of the copper bent pipe is poor, the sealing performance between the copper bent pipe and the output shaft is poor, water flows out, the cooling effect is influenced, other parts can be damaged, and the rhinestone is scrapped.

Therefore, in order to solve the above technical problems, it is necessary to provide a cooling mechanism for a water drill.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a cooling body of water bores.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

a cooling mechanism of a water drill comprises a middle cover and an output shaft, wherein a first cavity is arranged in the middle cover, a second cavity is arranged on the output shaft along the axial direction, the rear end of the output shaft extends into the middle cover, a sealing element is arranged on the outer wall of the rear end of the output shaft and/or the inner wall of the second cavity of the rear end of the output shaft and/or the end face of the rear end of the output shaft, the sealing element is in sealing contact with the middle cover, and the first cavity is communicated with the second cavity.

As a further improvement of the utility model, the sealing member is first seal cover, the inner wall of first seal cover with the outer wall sealing contact of the rear end of output shaft, the outer wall of first seal cover with the inner wall sealing contact of well lid.

As a further improvement of the utility model, the sealing member is the second seal cover, include the first sealed section of thick bamboo and the second sealed section of thick bamboo that set up along the axial, the external diameter of first sealed section of thick bamboo is less than the external diameter of the sealed section of thick bamboo of second, first sealed section of thick bamboo stretches into in the second cavity and with the internal wall sealing contact of second cavity, the sealed section of thick bamboo of second with well lid sealing contact.

As a further improvement, the sealing member is a third sealing sleeve, a terminal surface of the third sealing sleeve and the end face sealing contact of the rear end of the output shaft, the outer wall of the third sealing sleeve and the middle cover sealing contact.

As a further improvement, the middle cover is provided with a water inlet joint, the water inlet joint is provided with a third cavity, the third cavity is communicated with the first cavity.

As a further improvement of the utility model, the water inlet joint is connected with the middle cover by screw thread.

As a further improvement, the first cavity includes first through-hole, second through-hole and the fourth cavity that is linked together in proper order, the aperture of first through-hole is greater than the aperture of second through-hole, it is protruding to be provided with the annular on the water supply connector, the protruding cooperation of annular is in the first through-hole.

As a further improvement of the present invention, the annular protrusion and the middle cover are provided with a sealing ring therebetween.

As a further improvement of the utility model, the water inlet joint and the middle cover are integrally formed.

A water bores, includes the cooling body of above-mentioned water bores.

The utility model has the advantages that:

the utility model discloses low cost, the reliability is high, through cover in and set up water supply connector, water supply connector's third cavity is direct to be linked together with the second cavity of output shaft through the fourth cavity of well lid, need not to set up other parts, compact structure, light in weight, the leakproofness can be ensured to the sealing member of the terminal surface of the second cavity inner wall of the outer wall of the rear end of output shaft or the output shaft, prevent that rivers from going into other parts, prolong the life of each part.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second preferred embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third preferred embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fourth preferred embodiment of the present invention;

in the figure: 10. the middle cover, 12, the output shaft, 14, the first cavity, 20, the second cavity, 22, the first sealing sleeve, 24, the water inlet joint, 26, the third cavity, 28, the first through hole, 30, the second through hole, 31, the fourth cavity, 32, the annular protrusion, 34, the sealing ring, 36, the annular groove, 38, the needle bearing, 50, the second sealing sleeve, 52, the first sealing sleeve, 54, the second sealing sleeve, 60, the third sealing sleeve, 62 and the stepped hole.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Example one

As shown in fig. 1, a cooling mechanism of a rhinestone comprises a middle cover 10 and an output shaft 12, wherein a first cavity 14 is arranged in the middle cover 10, a second cavity 20 is arranged in the output shaft 12 along the axial direction, the rear end of the output shaft 12 extends into the middle cover 10, a sealing element is arranged on the outer wall of the rear end of the output shaft 12, the sealing element is in sealing contact with the middle cover 10, and the first cavity 14 is communicated with the second cavity 20.

In this embodiment, the sealing element is a first sealing sleeve 22, an inner wall of the first sealing sleeve 22 is in sealing contact with an outer wall of the rear end of the output shaft 12, and an outer wall of the first sealing sleeve 22 is in sealing contact with an inner wall of the middle cover 10.

In order to facilitate water inflow, the utility model discloses be provided with water supply connector 24 in preferred well lid 10, be provided with third cavity 26 in the water supply connector 24, third cavity 26 is linked together with first cavity 14.

In this embodiment, the water inlet connector 24 is screwed with the middle cap 10, so as to improve the rapidity and the connection stability of the water inlet connector 24 and the middle cap 10.

Specifically, the first cavity 14 includes a first through hole 28, a second through hole 30 and a fourth cavity 31 which are sequentially communicated, the aperture of the first through hole 28 is larger than that of the second through hole 30, an annular protrusion 32 is arranged on the water inlet connector 24, and the annular protrusion 32 is matched in the first through hole 28.

In order to improve the sealing performance between the water inlet joint 24 and the middle cap 10 and ensure that water flows into the fourth cavity 31 from the third cavity 26, a sealing ring 34 is arranged between the annular protrusion 32 and the middle cap 10.

Specifically, an annular groove 36 is formed in the annular protrusion 32, the sealing ring 34 is placed in the annular groove 36, and the sealing ring 34 is in sealing contact with the middle cap 10.

In order to support the output shaft 12 and enable the output shaft 12 to rotate, in the present embodiment, the rear end of the output shaft 12 is connected to the inner cover 10 through a needle bearing 38. Further preferably, the inner ring of the needle bearing 38 is in clearance fit with the output shaft 12, and the outer ring of the needle bearing 38 is in interference fit with the middle cap 10.

When the drill bit is used, the water source device is connected through the water inlet connector 24, the water source sequentially enters the third cavity 26, the fourth cavity 31 and the second cavity 20 and is sprayed out from the front end of the output shaft 12, the drill bit mounted at the front end of the output shaft 12 is cooled, and meanwhile, sundry chips in the drill bit can be flushed out.

Example two

As shown in fig. 2, the present embodiment is different from the first embodiment in that: the inner wall of the second cavity 20 at the rear end of the output shaft 12 is provided with a seal.

In this embodiment, the sealing element is a second sealing sleeve 50, and includes a first sealing sleeve 52 and a second sealing sleeve 54 arranged along the axial direction, the outer diameter of the first sealing sleeve 52 is smaller than the outer diameter of the second sealing sleeve 54, the first sealing sleeve 52 extends into the second cavity 20 and is in sealing contact with the inner wall of the second cavity 20, and the second sealing sleeve 54 is in sealing contact with the middle cap 10.

Further preferably, the first sealing sleeve 52 is integrally connected with the second sealing sleeve 54, so as to improve the sealing performance and stability of the second sealing sleeve 50.

When the drill bit is used, the water source equipment is connected through the water inlet connector 24, a water source sequentially enters the third cavity 26, the fourth cavity 31, the second sealing barrel 54, the first sealing barrel 52 and the second cavity 20 and is sprayed out from the front end of the output shaft 12, cooling of the drill bit installed at the front end of the output shaft 12 is achieved, and meanwhile sundry chips in the drill bit can be flushed out.

EXAMPLE III

As shown in fig. 3, the present embodiment is different from the first embodiment in that: the end face of the rear end of the output shaft 12 is provided with a seal.

In this embodiment, the sealing member is a third sealing sleeve 60, one end surface of the third sealing sleeve 60 is in sealing contact with the end surface of the rear end of the output shaft 12, and the outer wall of the third sealing sleeve 60 is in sealing contact with the middle cover 10.

Further preferably, a stepped hole 62 is formed in the third sealing sleeve 60, and the stepped hole 62 is respectively communicated with the fourth cavity 31 and the second cavity 20.

When the drill bit is used, the water source equipment is connected through the water inlet connector 24, a water source sequentially enters the third cavity 26, the fourth cavity 31, the step hole 62 and the second cavity 20 and is sprayed out from the front end of the output shaft 12, the drill bit mounted at the front end of the output shaft 12 is cooled, and meanwhile sundry chips in the drill bit can be flushed out.

Example four

As shown in fig. 4, the present embodiment is different from the first embodiment in that: the water inlet joint 24 is integrally formed with the middle cover 10, so that the sealing performance is improved, and water is ensured to enter the fourth cavity 31 from the third cavity 26.

In other embodiments, the sealing member may be disposed on the outer wall of the rear end of the output shaft 12 and the inner wall of the second cavity 20 at the rear end of the output shaft 12; or the sealing member is arranged on the outer wall of the rear end of the output shaft 12 and the end surface of the rear end of the output shaft 12; or the sealing elements are arranged on the outer wall of the rear end of the output shaft 12, the inner wall of the second cavity 20 at the rear end of the output shaft 12 and the end surface of the rear end of the output shaft 12; or a seal member is provided on the inner wall of the second cavity 20 at the rear end of the output shaft 12 and the end face of the rear end of the output shaft 12.

The embodiment of the utility model provides a water bores, including the cooling body that the water provided by the above-mentioned embodiment bored.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The cooling mechanism of the water drill is characterized by comprising a middle cover and an output shaft, wherein a first cavity is arranged in the middle cover, a second cavity is axially arranged on the output shaft, the rear end of the output shaft extends into the middle cover, a sealing element is arranged on the outer wall of the rear end of the output shaft and/or the inner wall of the second cavity of the rear end of the output shaft and/or the end surface of the rear end of the output shaft, the sealing element is in sealing contact with the middle cover, and the first cavity is communicated with the second cavity.

2. The cooling mechanism of the water drill according to claim 1, wherein the sealing member is a first sealing sleeve, an inner wall of the first sealing sleeve is in sealing contact with an outer wall of the rear end of the output shaft, and the outer wall of the first sealing sleeve is in sealing contact with an inner wall of the middle cover.

3. The cooling mechanism of the water drill according to claim 1, wherein the sealing element is a second sealing sleeve and comprises a first sealing cylinder and a second sealing cylinder which are arranged along the axial direction, the outer diameter of the first sealing cylinder is smaller than that of the second sealing cylinder, the first sealing cylinder extends into the second cavity and is in sealing contact with the inner wall of the second cavity, and the second sealing cylinder is in sealing contact with the middle cover.

4. The cooling mechanism of the water drill according to claim 1, wherein the sealing member is a third sealing sleeve, one end face of the third sealing sleeve is in sealing contact with the end face of the rear end of the output shaft, and the outer wall of the third sealing sleeve is in sealing contact with the middle cover.

5. The cooling mechanism of the water drill according to any one of claims 1 to 4, wherein a water inlet joint is arranged in the middle cover, a third cavity is arranged in the water inlet joint, and the third cavity is communicated with the first cavity.

6. The cooling mechanism of water drill according to claim 5, characterized in that the water inlet joint is in threaded connection with the middle cap.

7. The cooling mechanism of the water drill according to claim 6, wherein the first cavity comprises a first through hole, a second through hole and a fourth cavity which are communicated in sequence, the aperture of the first through hole is larger than that of the second through hole, the water inlet joint is provided with an annular protrusion, and the annular protrusion is matched in the first through hole.

8. The rhinestone cooling mechanism according to claim 7, wherein a sealing ring is provided between the annular protrusion and the middle cap.

9. The rhinestone cooling mechanism according to claim 5, wherein the water inlet joint is integrally formed with the middle cap.

10. A water drill, characterized by comprising a cooling mechanism of the water drill according to any one of claims 1-9.