TWM588198U - Joint structure of high pressure grease gun tubing - Google Patents

Abstract

A joint structure of high pressure grease gun tubing is an oil pipe connected to a high pressure grease gun, and the end of the oil pipe is connected with a rotatable joint, and the joint includes a joint connected with the oil pipe for that the grease can pass through the middle through hole, and the end of the joint is sequentially provided with a first shaft part, a second shaft part with an outer diameter slightly larger than the first shaft part and a caulking groove for the oil sealing washer and the oil sealing ring to be sleeved, and a rotary joint has the thread on the outside end and the grease can pass in its middle. The inside end of the rotary joint is embedded into the caulking groove of the joint, and a first coupling part for coupling of the first shaft part is arranged in the middle of the rotary joint, which is closely fitted with the oil sealing ring and the oil sealing washer. A second coupling part for coupling of the second shaft part makes that the rotary joint can be rotated on the joint without falling out, and that it is easier to connect with the grease nozzle of the lubricating grease, and also there is no leakage under the action of high pressure grease.

Description

Joint structure of high-pressure grease gun oil pipe

The present invention relates to a rotatable rotary joint embedded in a joint at the end of an oil pipe on a high-pressure grease gun, and an oil-preventing sealing washer and an oil-preventing sealing ring are provided between the rotary joint and the joint to pass through the rotary joint. The connection with the grease nipple to be filled with grease is easier, and at the same time, it can prevent the leakage of high-pressure butter.

General grease guns are widely used in manufacturing, repair, printing and dyeing services, as well as the repair and maintenance of engineering machinery and equipment such as industry, agriculture, aviation, ships, terminals, construction industry, etc. Among them, high-pressure grease guns are suitable for lubrication systems and complete butter distribution equipment. It is also suitable for high-viscosity greases and works in cold areas.

The principle of the high-pressure grease gun is: as shown in Figures 1 and 2, an oil pipe 2 is connected to the oil outlet of the grease gun 1. The end of the oil pipe 2 is connected with a joint 3, and the joint 3 is screwed to the desired position. The grease nozzle is filled with grease. At the same time, the grease gun 1 is provided with a grease can 11 that can be filled with grease, so that when compressed air is guided into the gun through a hose, the air pressure is used to force continuous extrusion in the gun. When the mechanism is fired, the grease can be sucked into the barrel from the grease barrel 11 and continuously squeezed into the grease nipple from the joint 3 through the oil pipe 2 to achieve the operation of continuous supply of grease lubrication.

At the same time, the structure of the joint 3 at the end of the oil pipe 2 includes a joint 3 A sleeve 32 is used to make the oil pipe 2 penetrate between the joint 3 and the sleeve 32, and then the two ends of the sleeve 32 are pressed to form a tight bundle portion 321 at both ends of the sleeve 32 to clamp and hold the oil pipe 2. On the joint 3 so as not to be detached, and the outer end of the joint 3 is provided with a screw 31 so that the joint 3 and the grease mouth are tightly screwed together (the joint 3 connecting the oil pipe 2 and the grease gun 1 is also the same structure).

Therefore, by using the connection method of the joint 3 of the oil pipe 2 above, when the grease gun 1 squeezes out the butter in a high pressure and delivers it to the grease nipple, the grease will not leak due to the high pressure, but when one end of the oil pipe 2 is at After screwing on the grease gun 1, when the joint 3 on the other end of the oil pipe 2 is to be connected to the grease nipple filled with grease, the thread 31 is a part of the self-structure of the joint 3, and the oil pipe 2 is connected to the joint 3 again. It is fixed and fixed together, so the joint 3 cannot be rotated on the oil pipe 2. Therefore, when the screw 31 is to be screwed with the grease nipple, the entire grease gun 1 must be rotated together to connect the joint 3 with the butter. Nozzle connection, such a joint 3 structure makes the grease injection operation very inconvenient and troublesome.

The reason is that in order to improve the joint operation between the end of the oil pipe of the known high-pressure grease gun and the grease nipple to be filled with grease, it is very inconvenient. The present invention is to provide a joint design that can be rotated on the oil pipe. That is, the outer end of the joint connecting the oil pipe is provided with a first shaft portion for the oil seal gasket and the oil seal ring to be sleeved, and a second shaft portion with a slightly larger outer diameter, and a rotary joint is provided for the oil seal. The washer and the oil seal ring are tightly installed in the second shaft joint portion that is matched with the second shaft portion, and then the rotary joint can be rotatably fitted on the joint, and the rotary joint and the grease nipple to be filled with grease can be easily passed through the rotary joint. Rotary connection without having to rotate the grease gun together. At the same time, the high-pressure grease in the filling process will not leak out from the rotary joint through the sealing and leakage-preventing effect of the oil-proof seal washer and the oil-proof seal ring.

The technical solution adopted by the new type to solve its technical problem is to provide a joint connected to the oil pipe. The joint is sequentially provided with a first shaft portion and a second shaft portion from the outside to the first shaft portion. The sleeve is set with an oil-proof seal washer and an oil-proof seal ring and abuts on the second shaft portion, and a rotary joint with screw teeth on the outer end is provided, and the first and second shaft portions are provided in the sleeve. A first shaft engaging portion and a second shaft engaging portion, and an oil seal gasket and an oil seal ring are tightly fitted in the second shaft engaging portion, and then the rotary joint can be rotatably fitted on the joint .

In the above solution, an insert groove is provided at the inner side of the second shaft portion of the joint, and a nesting portion is provided at the inner end of the rotary joint. Spin up without falling out.

Therefore, a rotary joint is provided at the end of the joint connected to the oil pipe of the high-pressure grease gun, so that the rotary joint can rotate freely without falling out, and then when it is connected with the grease nipple to be filled with grease, just rotate The rotary joint can be easily connected to the grease nipple without turning with the grease gun, making the operation of the connection easier, and at the same time, the high-pressure butter will not leak from the rotary joint.

2‧‧‧ tubing

3‧‧‧ connector

32‧‧‧ Casing

321‧‧‧Tight Beam Department

33‧‧‧First shaft

34‧‧‧Second shaft section

35‧‧‧ Recessed

36‧‧‧oil seal gasket

37‧‧‧oil seal ring

38‧‧‧ Rotary Joint

381‧‧‧Screw

382‧‧‧Nesting Department

383‧‧‧Mating part

384‧‧‧First shaft joint

385‧‧‧Second shaft joint

The present invention is further described below with reference to the drawings and embodiments.

FIG. 1 is a schematic structural diagram of a general high-pressure grease gun.

Figure 2 is a schematic perspective view of a joint at the end of the tubing of a general high-pressure grease gun.

Figure 3 is a schematic perspective view of a joint at the end of the new type of oil pipe.

FIG. 4 is an exploded perspective view of the end connector of the new type of oil pipe.

FIG. 5 is a schematic cross-sectional view of a new type of tubing end joint.

Please refer to Figures 3 ~ 5. A connector 3 is connected to the end of the oil pipe 2 on the new grease gun. The joint 3 is also formed by the two ends of the sleeve 32 to form a tight bundle portion 321, and the oil pipe 2 is tightly pressed. Is connected between the joint 3 and the sleeve 32, and at the same time, the outer end of the joint 3 is provided with a first shaft portion 33, a second shaft portion 34 having an outer diameter slightly larger than the first shaft portion 33, and An indentation groove 35 is recessed, and an oil-stop seal washer 36 and an oil-stop seal ring 37 are sleeved on the first shaft portion 33 in order, so as to abut against the second shaft portion 34.

A rotary joint 38 is also provided. The outer end of the rotary joint 38 is provided with a screw tooth 381, the inner end is provided with a nesting portion 382, and a middle part of the rotary joint 38 is provided with a first shaft engaging portion 384 and an inner end. A second shaft engaging portion 385 is provided therein, so that the first shaft portion 33 of the joint 3 and the first shaft engaging portion 384 of the rotary joint 38 are brought together, and the second shaft portion 34 of the joint 3 is connected to the rotary joint 38. The second shaft engaging portion 385 of the shaft is brought together, and at the same time, the oil seal gasket 36 and the oil seal ring 37 are fitted into the second shaft engagement portion 385, and then the rotary joint 38 is fitted on the joint 3 At this time, the end of the nesting portion 382 is pressed to form the fitting portion 383 into the recess 35 of the joint 3, so that the rotary joint 38 can be rotatably fitted on the joint 3 without falling out; The sealing washer 36 is a Teflon-like abrasion-resistant material, which enables a precise fit with the first shaft portion 33 and the second shaft engaging portion 385, and the oil seal ring 37 is made of a rubber material, which also makes it compatible with the first The shaft portion 33 and the second shaft engaging portion 385 are closely fitted.

Therefore, as long as the rotary joint 38 on the joint 3 at the end of the oil pipe 2 of the grease gun is directly rotated, the rotary joint 38 can be screwed with the grease nipple to be filled with grease, so that the grease gun or the oil pipe 2 does not have to follow together Rotation makes the operation of the whole connection easier, and at the same time, the oil-sealing gasket 36 and the oil-sealing ring 37 prevent the high-pressure grease from leaking out of the rotary joint 38 to ensure the grease filling. The operation went smoothly.

Furthermore, when the rotary joint 38 is locked on the grease nipple and the high-pressure grease gun is activated The operation causes the high-pressure grease in the oil pipe 2 to be injected into the grease nipple. At this time, the high-pressure grease also passes through the first shaft joint 384 and then enters the second shaft joint 385. The high-pressure grease will push the oil seal The washer 36 and the oil seal ring 37 prevent the rotary joint 38 from rotating, so as to ensure that the rotary joint 38 is not loosened due to external force during the grease pouring operation, and high safety of the grease pouring operation is achieved.

Claims (2)

A joint structure of a high-pressure grease gun oil pipe is provided with a joint connected to an oil pipe. The joint sequentially sets a first shaft portion and a second shaft portion inward from the outer end, so that the first shaft portion is sleeved in order. An oil seal washer and an oil seal ring are set to abut against the second shaft portion, and a rotary joint with a screw tooth at its outer end is provided, and the first and second shaft portions can be shaft-fitted. A first shaft engaging portion and a second shaft engaging portion, and at the same time, the oil seal gasket and the oil seal ring are closely adhered to the second shaft engagement portion, and then the rotary joint is rotatably fitted on the joint. The joint structure of the high-pressure grease gun oil pipe according to claim 1, wherein an inner groove is provided at the inner side of the second shaft portion of the joint, and a nesting portion is provided at the inner end of the rotary joint, so that the end of the nesting portion is applied. It is pressed into the recess, so that the rotary joint can rotate on the joint without falling out.