CN214467772U

CN214467772U - Straight-through grease nipple

Info

Publication number: CN214467772U
Application number: CN202120611776.2U
Authority: CN
Inventors: 蔡中道
Original assignee: Zhuji Zhongdao Machinery Technology Co ltd
Current assignee: Zhuji Zhongdao Machinery Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-10-22
Anticipated expiration: 2031-03-25

Abstract

The patent application relates to the technical field of grease nipples, in particular to a straight-through grease nipple, which comprises a grease nipple body, wherein a communicating hole and a second oil hole are formed in the grease nipple body, the communicating hole is communicated with the second oil hole, the aperture of the second oil hole is larger than that of the communicating hole, a valve body is connected in the communicating hole in a sliding manner, a first oil hole is formed in the valve body and used for being matched with a grease gun, an oil inlet hole penetrates through the side wall of the valve body and is communicated with the first oil hole, a compression spring is arranged in the second oil hole, one end of the compression spring is fixedly connected with the side wall of the second oil hole, the other end of the compression spring is fixedly connected with the valve body, when the compression spring is in a natural state, the oil inlet hole is arranged in the communicating hole, when the sum of the gravity of lubricating grease and the valve body in the valve body is larger than the elastic force of the compression spring, the valve body can move towards the direction close to the compression spring so that the first oil hole is communicated with the second oil hole, it has the characteristic of difficult overflow of lubricating grease.

Description

Straight-through grease nipple

Technical Field

The utility model relates to a grease nipple technical field especially relates to a through type grease nipple.

Background

The grease nipple is also called as a pressure filling oil cup, one end of the grease nipple is connected to mechanical equipment in a threaded mode, and the other end of the grease nipple is matched with a grease gun, so that the grease nipple is an important connecting piece for filling lubricating grease into the mechanical equipment by the grease gun. The existing grease nipple is penetrated with an injection hole, the oil inlet end of the grease nipple is provided with an oil inlet, the injection hole is provided with a compression spring and an opening and closing ball, and the opening and closing ball is used for opening or closing the oil inlet. However, the contact area between the opening and closing ball and the oil inlet is small, the requirement on the manufacturing precision of the oil inlet is high, the condition that the opening and closing ball and the oil inlet are incompletely closed is easy to occur, lubricating grease can overflow from the incompletely closed position, and the surfaces of a grease nipple and mechanical equipment are polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a through type grease nipple, it has the difficult characteristics that spill over of lubricating grease.

In order to achieve the above purpose, the basic scheme of the utility model is as follows:

a straight-through type grease fitting comprises a grease fitting body, wherein a communicating hole and a second oil filling hole are formed in the grease fitting body and are communicated with each other, the aperture of the second oil filling hole is larger than that of the communicating hole,

a valve body is connected in the communicating hole in a sliding way, a first oil filling hole is arranged on the valve body and is used for being matched with a grease gun, an oil inlet hole penetrates through the side wall of the valve body and is communicated with the first oil filling hole,

be provided with compression spring in the second oil filler point, compression spring's one end and the lateral wall fixed connection of second oil filler point, compression spring's the other end and valve body fixed connection, work as when compression spring is in under the natural condition, place in the intercommunication hole in the oil inlet, work as when the gravity sum of lubricating grease and valve body is greater than compression spring's elasticity in the valve body, the valve body can remove so that first oil filler point and second oil filler point communicate each other to the direction that is close to compression spring.

Furthermore, a sliding groove is formed in the outer edge of the valve body, a sliding block in sliding fit with the sliding groove is fixedly connected to the grease nipple body, and the sliding block is used for limiting the sliding stroke of the valve body.

Further, threaded connection has a piston sealing member in placing the one end of grease nipple body in the valve body, the piston sealing member and the lateral wall sliding fit of intercommunicating pore, when need not pour into lubricating grease into, the piston sealing member contacts with the surface of intercommunicating pore, and is sealed effectual, and can reduce the machining precision of valve body outer wall, improves machining efficiency, reduces the processing cost, and the piston sealing member still is used for restricting the sliding stroke of valve body, avoids the valve body to deviate from the grease nipple body.

Further, the grease fitting body comprises a first thread section, the first thread section is arranged at one end, far away from the valve body, of the grease fitting body, the first thread section is used for being in threaded connection with mechanical equipment, the sealing performance and the positioning accuracy of threaded connection are high, and installation is facilitated.

Further, the grease nipple body further comprises a second thread section, the thread turning direction of the second thread section is opposite to that of the first thread section, the shaft diameter of the second thread section is smaller than that of the first thread section, a screwing nut is connected to the second thread section in a threaded mode and used for abutting against the surface of mechanical equipment, the locking nut is used for preventing looseness between the grease nipple body and the mechanical equipment, the mounting height of the grease nipple body can be adjusted, and the exposed length of the grease nipple is adjusted according to actual requirements.

Further, fixedly connected with connecting block on the outer fringe of grease nipple body near valve body one end, the cross sectional shape of connecting block is regular hexagon, is convenient for utilize instrument such as spanner to install and dismantle the grease nipple body.

Compared with the prior art, the scheme has the beneficial effects that:

the contact area between the valve body and the communicating hole is large, the sealing effect on lubricating grease is good, the lubricating grease can be prevented from overflowing from a gap between the valve body and the communicating hole after oil injection is finished, and pollution is reduced; the gap between the opening and closing ball and the communicating hole is small, the injection speed of the lubricating grease is slow, if the injection speed of the grease gun is too fast, the lubricating grease is easy to overflow, and a space for storing the lubricating grease is reserved in the first oil injecting hole, so that the lubricating grease is prevented from overflowing in the oil injecting process; after the grease gun finishes grease injection, the valve body is extruded towards the direction close to the compression spring, so that the first grease hole is communicated with the second grease hole, the lubricating grease remained in the first grease hole enters the second grease hole, and the loss of the lubricating grease in the lubricating grease adding process is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic top view of an embodiment;

fig. 3 is a schematic cross-sectional view taken at a-a in fig. 2.

Reference numerals in the drawings of the specification include:

1. a grease nipple body; 101. a communicating hole; 102. a second oil filler hole; 103. a first thread segment; 104. a second thread segment; 11. connecting blocks; 111. a slider; 12. screwing the nut; 13. a compression spring; 14. a circlip; 2. a valve body; 201. a first oil filler hole; 202. an oil inlet hole; 203. a chute; 21. a piston seal.

Detailed Description

The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:

example (b):

a straight-through type grease fitting comprises a grease fitting body 1, wherein the grease fitting body 1 is provided with a communicating hole 101 and a second oil filling hole 102, the communicating hole 101 is communicated with the second oil filling hole 102, the aperture of the second oil filling hole 102 is larger than that of the communicating hole 101, a valve body 2 is connected in the communicating hole 101 in a sliding manner, the valve body 2 is provided with a first oil filling hole 201, the first oil filling hole 201 is used for being matched with a grease gun, an oil inlet hole 202 penetrates through the side wall of the valve body 2, the oil inlet hole 202 is communicated with the first oil filling hole 201, a compression spring 13 is arranged in the second oil filling hole 102, an elastic retainer ring 14 is fixedly connected in the second oil filling hole 102, one end of the compression spring 13 is fixedly connected with the elastic retainer ring 14, the other end of the compression spring 13 is fixedly connected with the valve body 2, when the compression spring 13 is in a natural state, the oil inlet hole 202 is arranged in the grease fitting body 101, when grease is injected into the first oil hole 201, if the sum of the weight of the grease in the valve body 2 and the weight of the valve body is greater than the elastic force of the compression spring, the valve body 2 moves in a direction approaching the compression spring 13 so that the first oil hole 201 and the second oil hole 102 communicate with each other. The outer edge of the valve body 2 is provided with a sliding groove 203, the sliding groove 203 is communicated with one end of the valve body 2 which is arranged in the grease nipple body 1, the grease nipple body 1 is fixedly connected with a sliding block 111 which is in sliding fit with the sliding groove 203, and the sliding block 111 is used for limiting the sliding stroke of the valve body 2. The valve body 2 is internally provided at one end of the grease nipple body 1, and a piston seal 21 is screwed thereto, and the piston seal 21 is slidably fitted to a side wall of the communication hole 101.

As shown in fig. 1, the grease fitting body 1 includes a first thread section 103, the first thread section 103 is disposed on an end of the grease fitting body 1 away from the valve body 2, and the first thread section 103 is used for being in threaded connection with a mechanical device. The grease fitting body 1 further comprises a second thread section 104, the thread turning direction of the second thread section 104 is opposite to that of the first thread section 103, the shaft diameter of the second thread section 104 is smaller than that of the first thread section 103, a screwing nut 12 is in threaded connection with the second thread section 104, and the screwing nut 12 is used for abutting against the surface of mechanical equipment. The outer edge of the grease nozzle body 1 close to one end of the valve body 2 is fixedly connected with a connecting block 11, and the cross section of the connecting block 11 is in a regular hexagon shape.

When the grease nozzle is assembled, the sliding groove 203 on the valve body 2 is aligned with the sliding block 111, the valve body 2 is pushed downwards to enter the communicating hole 101, the piston sealing piece 21 is screwed on the bottom end of the grease nozzle, the valve body 2 is pulled upwards to enable the piston sealing piece 21 to be in sliding fit with the communicating hole 101, the upper end of the compression spring 13 is bonded on the bottom of the valve body 2, the elastic check ring 14 is installed in the second oil filling hole 102, and the elastic check ring 14 is fixedly connected with the bottom end of the compression spring 13. The setting direction of the grease fitting shown in fig. 3 is the mounting direction of the grease fitting in the present embodiment.

The specific implementation mode of the scheme is as follows:

when the grease nipple is installed, the connecting block 11 on the grease nipple body 1 is clamped by a wrench, the first thread section 103 on the grease nipple body 1 is screwed into mechanical equipment, after the grease nipple body 1 is screwed into a proper length, the screwing nut 12 is rotated to enable the screwing nut 12 to be abutted against the surface of the mechanical equipment, and the external thread on the grease nipple body 1 and the internal thread on the mechanical equipment can be prevented from being loosened while the position of the grease nipple body 1 is fixed.

When utilizing grease nipple to pour into lubricating grease into, cup joint the connecting pipe on the grease gun, establish the tip at valve body 2 with the connecting pipe cover, and inject lubricating grease into first oil filler point 201, along with the injection of lubricating grease, compression spring 13 receives the extrusion, valve body 2 is to the direction removal that is close to lubricating grease, oil inlet 202 and second oil filler point 102 are linked together, lubricating grease passes through oil inlet 202 and gets into mechanical equipment through second oil filler point 102, after the oiling, take off the connecting pipe from valve body 2, valve body 2 receives the action of gravity that lubricating grease is less than compression spring 13's elasticity effect to it, compression spring 13 drives valve body 2 and resets, oil inlet 202 is sealed by grease nipple body 1, first oil filler point 201 and second oiling mouth do not communicate this moment. The first oil hole 201 contains a part of grease, and the valve body 2 is pressed downward to reconnect the first oil port to the second oil hole 102, thereby allowing the remaining grease to enter the second oil hole 102.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A straight-through grease nipple is characterized in that: comprises a grease nipple body (1), wherein the grease nipple body (1) is provided with a communicating hole (101) and a second grease hole (102), the communicating hole (101) and the second grease hole (102) are communicated with each other, the aperture of the second grease hole (102) is larger than that of the communicating hole (101),

the lubricating oil gun is characterized in that a valve body (2) is connected in the communicating hole (101) in a sliding mode, a first oil filling hole (201) is formed in the valve body (2), the first oil filling hole (201) is used for being matched with a grease gun, an oil inlet hole (202) penetrates through the side wall of the valve body (2), the oil inlet hole (202) is communicated with the first oil filling hole (201),

be provided with compression spring (13) in second oil filler hole (102), the one end of compression spring (13) and the lateral wall fixed connection of second oil filler hole (102), the other end and valve body (2) fixed connection of compression spring (13), work as when compression spring (13) are in under the natural state, place in intercommunicating pore (101) in inlet port (202), work as when the gravity sum of lubricating grease and valve body (2) is greater than compression spring (13)'s elasticity in valve body (2), valve body (2) are to the direction removal that is close to compression spring (13) so that first oil filler hole (201) and second oil filler hole (102) communicate each other.

2. A straight-through grease fitting according to claim 1, wherein: the grease nozzle is characterized in that a sliding groove (203) is formed in the outer edge of the valve body (2), a sliding block (111) in sliding fit with the sliding groove (203) is fixedly connected to the grease nozzle body (1), and the sliding block (111) is used for limiting the sliding stroke of the valve body (2).

3. A straight-through grease fitting according to claim 1, wherein: the valve body (2) is arranged in one end of the grease nipple body (1) and is connected with a piston sealing piece (21) in a threaded mode, and the piston sealing piece (21) is in sliding fit with the side wall of the communicating hole (101).

4. A straight-through grease fitting according to claim 1, wherein: the grease fitting comprises a grease fitting body (1) and is characterized in that the grease fitting body (1) comprises a first thread section (103), the first thread section (103) is arranged at one end, far away from the valve body (2), of the grease fitting body (1), and the first thread section (103) is used for being in threaded connection with mechanical equipment.

5. A straight-through grease fitting according to claim 4, wherein: the grease nipple body (1) further comprises a second thread section (104), the thread turning direction of the second thread section (104) is opposite to that of the first thread section (103), the shaft diameter of the second thread section (104) is smaller than that of the first thread section (103), a screwing nut (12) is connected to the second thread section (104) in a threaded mode, and the screwing nut (12) is used for abutting against the surface of mechanical equipment.

6. A straight-through grease fitting according to claim 4, wherein: the grease nozzle is characterized in that a connecting block (11) is fixedly connected to the outer edge of one end, close to the valve body (2), of the grease nozzle body (1), and the cross section of the connecting block (11) is in a regular hexagon shape.