Rotary joint capable of discharging water from center

Abstract

The utility model relates to the technical field of machine tool accessories, in particular to a center water outlet rotary joint which comprises a water inlet end, a rotary end and a fixing frame, a three-way water inlet pipe, a first main shaft joint and an assembly cavity are sequentially arranged in the water inlet end from left to right, and the first main shaft joint is fixedly arranged in the water inlet end through a bolt. The rotating end comprises a rotating main shaft and a second main shaft connector fixedly arranged in the rotating main shaft, one end of the rotating main shaft is rotationally arranged in the assembling cavity, the first main shaft connector abuts against the second main shaft connector, and the fixing frame comprises a first annular fixing frame; a plurality of first shaft rods are arranged on the side wall of the first annular fixing frame, the shaft rods are fixedly connected with the exterior of the water inlet end, and a plurality of first threaded holes matched with external bolts are formed in the outer side of the first annular fixing frame in a penetrating mode. The device is novel in structure, remarkable in effect, high in practicability and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool accessories, in particular to a central water outlet rotary joint. Background Art

[0002] CNC machine tools have been widely used in major production industries. However, during the long-term processing of CNC machine tools, a certain amount of heat will be generated, which needs to be cooled by using corresponding water spray cooling mechanisms.

[0003] Patent No. CN218051652U discloses a water spray cooling mechanism for CNC machine tools, which belongs to the technical field of machine tool water spray cooling. It aims at the problem that when the spray angle needs to be adjusted, it can only be achieved by manually adjusting the universal water pipe, and the spray angle of the spray head cannot be automatically adjusted. The invention comprises an outer shell, the top of the outer shell is connected and fixed with a water inlet pipe, the outer peripheral surface of the water inlet pipe is fixed with an electromagnetic valve, the bottom of the two ends of the outer shell is fixed with a U-shaped mounting plate, a motor is fixed at the middle position of the bottom surface of the mounting plate, a rotating shaft is fixed at the output end of the motor, the top of the rotating shaft passes through the mounting plate and is rotatably connected to the middle position of the bottom surface of the outer shell; the utility model can automatically adjust the angle of the nozzle, so as not only to expand its spray range when the nozzle is spraying cooling, thereby achieving its cooling range, and there is no need to manually adjust the universal water pipe, thereby improving the convenience of use of the device.

[0004] The above-mentioned water spray cooling mechanism has the following technical problems: in deep hole processing, it is impossible to cool the drilling tool well, so it will cause damage to the tool and the processing accuracy cannot meet the process requirements. Utility Model Content

[0005] The utility model provides a central water outlet rotary joint to solve the problems of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a central water outlet rotary joint, comprising:

[0007] A water inlet end, wherein a three-way water inlet pipe, a first spindle joint and an assembly cavity are sequentially arranged inside the water inlet end from left to right, and the first spindle joint is fixed inside the water inlet end by bolts;

[0008] A rotating end, the rotating end comprising a rotating spindle and a second spindle joint fixedly arranged inside the rotating spindle, one end of the rotating spindle being rotatably arranged in the assembly cavity and the first spindle joint abutting against the second spindle joint;

[0009] The fixing frame comprises a first annular fixing frame, a plurality of first shaft rods are arranged on the side wall of the first annular fixing frame, the first shaft rods are fixedly connected to the outside of the water inlet end, and a plurality of first threaded holes matching with external bolts are arranged through the outside of the first annular fixing frame.

[0010] As a further improvement, a first alloy ring is provided at one end of the first spindle joint close to the second spindle joint, a second alloy ring is provided at the second spindle joint close to the first spindle joint, and the first alloy ring and the second alloy ring abut against each other.

[0011] As a further improvement, a second annular fixing frame is arranged on the outside of the water inlet end, the second annular fixing frame matches the outer shell, a plurality of second shaft rods are arranged on the inside of the second annular fixing frame, and the second annular fixing frame is fixedly arranged by the second shaft rods and the water inlet end.

[0012] As a further improvement, a plurality of second threaded holes adapted to fit with external bolts are provided through the outer side of the second annular fixing frame.

[0013] As a further improvement, a rotating bearing is sleeved inside the assembly cavity, the outer ring of the rotating bearing abuts against the inner wall of the assembly cavity, and the inner ring of the rotating bearing abuts against the outer wall of the rotating main shaft.

[0014] As a further improvement, a skeleton seal is sleeved inside the assembly cavity, and the skeleton seal is arranged on a side of the assembly cavity close to the rotating end, and an inner ring thereof abuts against the rotating main shaft.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In actual use of the utility model, the main shaft rotating sleeve of the rotating end is arranged in the water inlet end. During operation, the first main shaft joint and the second main shaft joint are abutted against each other through the first alloy ring and the second alloy ring to prevent cooling water from overflowing from the joint between the two. At the same time, the first alloy ring and the second alloy ring are made of ultra-high hardness materials, which have high wear resistance and can increase the service life of the equipment;

[0017] 2. The utility model fixes the water inlet end on the frame through the first annular fixing frame and the second annular fixing frame, and the first annular fixing frame is used to realize the limit, so as to avoid the impact force generated by the high-pressure water pipe during water injection during operation causing the water inlet end to be subjected to lateral force, so that the axis of the water inlet end and the rotating end are offset, causing wear between the two;

[0018] 3. The utility model supports the rotating end by rotating the bearing, making the equipment run more smoothly;

[0019] 4. In the present invention, when undesigned wear occurs between the first spindle joint and the second spindle joint, causing cooling water to overflow, the rotating end is sealed and protected by a skeleton seal, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 For this utility model Figure 2 A magnified view of the part A in the middle;

[0023] Figure 4 It is a partial exploded view of the utility model.

[0024] In the figure, 1, water inlet end; 11, three-way water inlet pipe; 12, first main shaft joint; 121, first alloy ring; 13, assembly cavity; 131, rotating bearing; 132, skeleton seal; 2, rotating end; 21, rotating main shaft; 22, second main shaft joint; 221, second alloy ring; 3, fixing frame; 31, first annular fixing frame; 311, first shaft rod; 312, first threaded hole; 4, second annular fixing frame; 41, second shaft rod; 411, second threaded hole. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Below is a combination of the embodiments and the attached Figures 1 to 4 , the technical solution of the utility model is further elaborated.

[0028] Example 1

[0029] A central water outlet rotary joint, comprising:

[0030] A water inlet end 1, wherein a three-way water inlet pipe 11, a first spindle joint 12 and an assembly cavity 13 are sequentially arranged inside the water inlet end 1 from left to right, and the first spindle joint 12 is fixed inside the water inlet end 1 by bolts;

[0031] The rotating end 2 comprises a rotating spindle 21 and a second spindle joint 22 fixedly arranged inside the rotating spindle 21. One end of the rotating spindle 21 is rotatably arranged in the assembly cavity 13 and the first spindle joint 12 abuts against the second spindle joint 22. A first alloy ring 121 is arranged at one end of the first spindle joint 12 close to the second spindle joint 22, and a second alloy ring 221 is arranged at the second spindle joint 22 close to the first spindle joint 12. The first alloy ring 121 and the second alloy ring 221 abut against each other.

[0032] The fixing frame 3 comprises a first annular fixing frame 31, a side wall of which is provided with a plurality of first shaft rods 311, the first shaft rods 311 are fixedly connected to the outside of the water inlet end 1, and a plurality of first threaded holes 312 adapted to external bolts are penetrated through the outside of the first annular fixing frame 31.

[0033] like Figures 1 to 4 As shown, during actual use of the utility model, the main shaft 21 of the rotating end 2 is rotatably sleeved in the water inlet end 1. During operation, the first main shaft joint 12 and the second main shaft joint 22 are abutted against each other by the first alloy ring 121 and the second alloy ring 221 to prevent cooling water from overflowing from the joint between the two. At the same time, the first alloy ring 121 and the second alloy ring 221 are made of ultra-high hardness material, which has high wear resistance and can increase the service life of the equipment.

[0034] The water inlet end 1 is fixed on the frame by the first annular fixing frame 31, and the first annular fixing frame 31 is used to achieve limiting, so as to prevent the impact force generated by the high-pressure water pipe when injecting water during operation from causing lateral force on the water inlet end 1, causing the axis of the water inlet end 1 and the rotating end 2 to shift, resulting in wear between the two.

[0035] As a further preferred embodiment, a second annular fixing frame 4 is arranged on the outside of the water inlet end 1, the second annular fixing frame 4 matches the outer shell, a plurality of second shaft rods 41 are arranged on the inside of the second annular fixing frame 4, the second annular fixing frame 4 is fixedly arranged by the second shaft rods 41 and the water inlet end 1, a plurality of second threaded holes 411 adapted to external bolts are arranged through the outside of the second annular fixing frame 4, and the water inlet end 1 is further limited by the second annular fixing frame 4 to avoid the water inlet end 1 being subjected to force deviation during the operation of the equipment, causing wear between the water inlet end 1 and the rotating end 2, and affecting the service life of the equipment.

[0036] As a further preferred embodiment, a rotating bearing 131 is sleeved inside the assembly cavity 13, the outer ring of the rotating bearing 131 abuts against the inner wall of the assembly cavity 13, and the inner ring of the rotating bearing 131 abuts against the outer wall of the rotating main shaft 21. The rotating end 2 is supported by the rotating bearing 131, so that the equipment runs more smoothly.

[0037] As a further preferred embodiment, a skeleton seal 132 is provided inside the assembly cavity 13. The skeleton seal 132 is arranged on the side of the assembly cavity 13 close to the rotating end 2 and the inner ring abuts against the rotating main shaft 21. When undesigned wear occurs between a main shaft joint 12 and a second main shaft joint, causing cooling water to overflow, the rotating end 2 is sealed and protected by the skeleton seal 132, thereby extending the service life of the equipment.

[0038] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A central water outlet rotary joint, characterized in that: include: A water inlet end (1), wherein a three-way water inlet pipe (11), a first spindle joint (12) and an assembly cavity (13) are arranged in sequence from left to right inside the water inlet end (1), and the first spindle joint (12) is fixed inside the water inlet end (1) by bolts; A rotating end (2), the rotating end (2) comprising a rotating main shaft (21) and a second main shaft joint (22) fixedly arranged inside the rotating main shaft (21), one end of the rotating main shaft (21) being rotatably arranged in the assembly cavity (13) and the first main shaft joint (12) abutting against the second main shaft joint (22); A fixing frame (3), the fixing frame (3) comprising a first annular fixing frame (31), a side wall of the first annular fixing frame (31) being provided with a plurality of first shaft rods (311), the first shaft rods (311) being fixedly connected to the outside of the water inlet end (1), and a plurality of first threaded holes (312) adapted to be matched with external bolts being provided through the outside of the first annular fixing frame (31).

2. A central water outlet rotary joint according to claim 1, characterized in that: A first alloy ring (121) is arranged at one end of the first spindle joint (12) close to the second spindle joint (22), and a second alloy ring (221) is arranged at the second spindle joint (22) close to the first spindle joint (12), and the first alloy ring (121) and the second alloy ring (221) are abutted against each other.

3. A central water outlet rotary joint according to claim 1, characterized in that: A second annular fixing frame (4) is arranged outside the water inlet end (1), the second annular fixing frame (4) matches the outer shell, a plurality of second shaft rods (41) are arranged inside the second annular fixing frame (4), and the second annular fixing frame (4) is fixedly arranged via the second shaft rods (41) and the water inlet end (1).

4. A central water outlet rotary joint according to claim 3, characterized in that: The outer side of the second annular fixing frame (4) is provided with a plurality of second threaded holes (411) adapted to be matched with external bolts.

5. A central water outlet rotary joint according to claim 1, characterized in that: A rotating bearing (131) is sleeved inside the assembly cavity (13), the outer ring of the rotating bearing (131) abuts against the inner wall of the assembly cavity (13), and the inner ring of the rotating bearing (131) abuts against the outer wall of the rotating main shaft (21).

6. A central water outlet rotary joint according to claim 1, characterized in that: A skeleton seal (132) is sleeved inside the assembly cavity (13). The skeleton seal (132) is arranged on a side of the assembly cavity (13) close to the rotating end (2), and the inner ring abuts against the rotating main shaft (21).

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