CN211600180U

CN211600180U - Automatic lubricating grease filling device

Info

Publication number: CN211600180U
Application number: CN201922237778.5U
Authority: CN
Inventors: 张凯
Original assignee: Shanghai Fu Filter Enterprise Development Co ltd
Current assignee: Shanghai Fu Filter Enterprise Development Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-09-29
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses an automatic lubricating grease filling device, which provides filling thrust through a spring and can realize gradual and slow release of the spring thrust; the filling device comprises a filling cylinder and a top cover, wherein a hollow inner cylinder is arranged in the filling cylinder; the inner cylinder and the piston can be assembled in a sliding and sealing way; the top cover is fixed on the top of the filling cylinder and seals the inner cylinder, the piston is fixedly assembled with one end of the push rod, the other end of the push rod penetrates through the top cover and the retaining block, the retaining block is fixed on the top cover, and the push rod is provided with a plurality of stop clamping grooves distributed along the axial direction of the push rod; the stop clamping groove can be assembled with one end of the stop rod in a clamping mode, the other end of the stop rod penetrates out of the retaining block and then is assembled and fixed with the first rotating shaft, a hollow retaining mounting groove is formed in the retaining block, a limiting ring is assembled in the retaining mounting groove in a clamping mode and in a sliding mode and fixed on the stop rod, and a stop spring is installed on the part, located between the limiting ring and the end face of the inner side of the retaining mounting groove, of the stop rod.

Description

Automatic lubricating grease filling device

Technical Field

The utility model relates to a lubricating grease filling device especially relates to an automatic filling device of lubricating grease.

Background

The lubricating grease is a common lubricating product, has relatively high viscosity, and is suitable for lubricating parts which run for a long time and have high load, such as bearings. At present, the lubricating grease is filled mainly in a manual smearing or filling mode which depends on manual work seriously, so that the lubricating grease needs to be overhauled and filled at high frequency and regular intervals, maintenance cost is increased invisibly, and equipment is abnormally abraded and even scrapped once the lubricating grease is not filled in time. Although the prior automatic lubricating grease filling equipment exists, the disadvantage is obvious, the lubricating grease is pushed by the thrust of the spring to be filled, the lubricating grease is excessively filled in the early stage of the addition due to the nonlinear elasticity released by the spring, and the filling amount of the lubricating grease is reduced due to the fact that the thrust of the spring is reduced in the later stage, so that insufficient filling is possibly caused. Although the filling amount can be controlled by using the electric motor, the electric motor is large in size and increases wiring, so that the electric motor is not widely applicable.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of the prior art, the utility model aims to solve the technical problem that an automatic filling device of lubricating grease is provided, it provides filling thrust through the spring and can realize gradual, the slow release of spring thrust.

In order to achieve the purpose, the utility model provides an automatic lubricating grease filling device, which comprises a filling cylinder and a top cover, wherein the filling cylinder is internally provided with a hollow inner cylinder; the inner cylinder and the piston can be assembled in a sliding and sealing way; the top cover is fixed on the top of the filling cylinder and seals the inner cylinder, the piston is fixedly assembled with one end of the push rod, the other end of the push rod penetrates through the top cover and the retaining block, the retaining block is fixed on the top cover, and the push rod is provided with a plurality of stop clamping grooves distributed along the axial direction of the push rod;

the stop clamping groove can be assembled with one end of the stop rod in a clamping mode, the other end of the stop rod penetrates out of the retaining block and then is assembled and fixed with the first rotating shaft, a hollow retaining mounting groove is formed in the retaining block, a limiting ring is assembled in the retaining mounting groove in a clamping mode and in a sliding mode and fixed on the stop rod, and a stop spring is installed on the part, located between the limiting ring and the end face of the inner side of the retaining mounting groove, of the stop rod.

Preferably, the bottom of the inner cylinder is provided with a taper hole, the bottom of the piston is provided with a circular truncated cone body part, and the circular truncated cone body can be arranged in the taper hole.

Preferably, the first rotating shaft is installed in the abdicating groove and slidably assembled with the first rotating shaft, the abdicating groove is formed in one end of the connecting rod, the middle part of the connecting rod is hinged to the supporting plate fixed on the top cover through the second rotating shaft, the top of the connecting rod is hinged to one end of the abdicating driving rod through the third rotating shaft, the other end of the abdicating driving rod is installed in the power inner cavity inside the power shell and fixedly assembled with the power piston, the power piston is clamped and slidably assembled in the power inner cavity, and a resistance spring is installed between the inner wall end surface of the power inner cavity and the power.

Preferably, the parts of the power inner cavity, which are positioned on two sides of the power piston, are respectively communicated with one ends of a first differential pressure pipe and a second differential pressure pipe, the other ends of the first differential pressure pipe and the second differential pressure pipe are respectively communicated with a second filling pipe and a first filling pipe which are positioned on two sides of the differential pressure valve, and two ends of the first filling pipe are respectively communicated with a connecting pipe and one end inside the differential pressure inner cavity; one end of the second filling pipe is communicated with the other end of the differential pressure inner cavity, the other end of the second filling pipe is communicated with the lubricating grease filling position, and the connecting pipe is communicated with the taper hole.

Preferably, a flow measuring channel, a pressure reducing hole and a pressure reducing groove are respectively arranged in the differential pressure inner cavity, two ends of the flow measuring channel are respectively communicated with two ends of the differential pressure inner cavity, the pressure reducing groove is arranged on part of the inner wall of the pressure reducing hole, the pressure reducing hole is clamped with a pressure reducing piston and can be assembled in a sliding mode, the pressure reducing piston and the pressure reducing hole are not provided with the pressure reducing groove and are assembled in a sealing mode, and a pressure reducing spring is arranged between the pressure reducing piston and the side face, close to one end of the second filling pipe, of the inner side of.

The utility model has the advantages that: the utility model discloses simple structure, and provide thrust through the spring, need not motor, wiring, the volume is also relatively little. Additionally the utility model discloses a pressure differential at differential pressure valve both ends realizes moving down of piston to make the spring release elasticity relatively linearly, just also can effectively avoid because the nonlinear change of spring leads to the filling volume to take place great change, thereby make the filling of lubricating grease more steady, and the filling as required, thereby guarantee the normal lubrication of equipment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of fig. 1 at F1.

Fig. 3 is an enlarged view of fig. 1 at F2.

Detailed Description

The technical solution 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 3, the automatic lubricating grease filling device of the present embodiment includes a filling cylinder 110 and a top cover 120, wherein the filling cylinder 110 is internally provided with a hollow inner cylinder 111, and the bottom of the inner cylinder 111 is provided with a taper hole 112; the inner cylinder 111 and the piston 220 are assembled in a sliding and sealing mode, the bottom of the piston 220 is provided with a cone body part 221, and the cone body 221 can be installed in the taper hole 112;

the top cover 120 is fixed on the top of the filling cylinder 110 and seals the inner cylinder 111, the piston 220 is assembled and fixed with one end of the push rod 210, the other end of the push rod 210 penetrates through the top cover 120 and the retaining block 130, the retaining block 130 is fixed on the top cover 120, and the push rod 210 is provided with a plurality of stop clamping grooves 211 distributed along the axial direction of the push rod;

the stop clamping groove 211 can be assembled with one end of the stop rod 310 in a clamping manner, the other end of the stop rod 310 penetrates through the retaining block 130 and then is assembled and fixed with the first rotating shaft 511, a hollow retaining installation groove 131 is formed in the retaining block 130, a limiting ring 311 is assembled in the retaining installation groove 131 in a clamping and sliding manner, the limiting ring 311 is fixed on the stop rod 310, a stop spring 410 is installed on the part, located between the limiting ring 311 and the inner side end face of the retaining installation groove 131, of the stop rod 310, and the stop spring 410 is used for generating elastic force for pushing the stop rod 310 to the stop clamping groove 211;

the first rotating shaft 511 is installed in the abdicating groove 321 and is assembled with the same in a sliding manner, the abdicating groove 321 is arranged at one end of the connecting rod 320, the middle part of the connecting rod 320 is hinged with the supporting plate 150 fixed on the top cover 120 through the second rotating shaft 512, the top part of the connecting rod is hinged with one end of the stop driving rod 330 through the third rotating shaft 513, the other end of the stop driving rod 330 is installed in the power cavity 421 inside the power shell 420 and is assembled and fixed with the power piston 430, the power piston 430 is clamped and assembled in the power cavity 421 in a sliding manner, a resistance spring 440 is installed between the inner wall end surface of the power cavity 421 and the power piston 430, and the resistance spring 440 is used for;

the parts of the power cavity 421 located at two sides of the power piston 430 are respectively communicated with one end of a first differential pressure pipe 271 and one end of a second differential pressure pipe 272, the other ends of the first differential pressure pipe 271 and the second differential pressure pipe 272 are respectively communicated with a second filling pipe 260 and a first filling pipe 250 located at two sides of the differential pressure valve 610, and two ends of the first filling pipe 250 are respectively communicated with the connecting pipe 240 and one end inside the differential pressure cavity 614; one end of the second filling pipe 260 is communicated with the other end of the differential pressure inner cavity 614, and the other end is communicated with a lubricating grease filling position, so that lubricating grease is conveyed to the filling position. The connection pipe 240 communicates with the tapered hole 112.

A flow measuring channel 611, a pressure reducing hole 612 and a pressure reducing groove 613 are respectively arranged in the differential pressure inner cavity 614, two ends of the flow measuring channel 611 are respectively communicated with two ends of the differential pressure inner cavity 614, the pressure reducing groove 613 is arranged on a part of the inner wall of the pressure reducing hole 612, the pressure reducing hole 612 is clamped with a pressure reducing piston 620 and can be assembled in a sliding mode, the pressure reducing piston 620 and the pressure reducing hole 612 are assembled in a sealing mode without the pressure reducing groove 613, a pressure reducing spring 630 is arranged between the pressure reducing piston 620 and the side face, close to one end of the second filling pipe 260, of the inner side of the pressure reducing hole 612, and the pressure reducing spring 630 is used for generating resistance force for preventing the pressure reducing. The relief spring 630 is mainly used to buffer the grease when the grease pressure is too high, and to prevent the grease from being overfilled.

In an initial state, the spring drives the piston to extrude the lubricating grease in the inner cylinder downwards, so that the lubricating grease is pressed to enter the first filling pipe 250 through the connecting pipe 240, then most of the lubricating grease enters the differential pressure inner cavity 614 in the differential pressure valve 610, one part of the lubricating grease enters the first differential pressure pipe 271, and the lubricating grease entering the first differential pressure pipe 271 enters the power inner cavity 421 and is positioned on one side of the power piston 430;

the grease entering the differential pressure inner cavity 614 enters the second fill pipe 260 through the metering channel 611 under normal conditions, so that the equipment is lubricated, and part of the grease entering the second fill pipe 260 enters the second differential pressure pipe 272;

when the pressure of the lubricating grease in the first filling pipe and the second filling pipe is insufficient, the pressure of the lubricating grease in a power inner cavity 421 communicated with the first filling pipe is reduced, at the moment, the resistance spring 440 drives the power piston to move towards the direction, so that the connecting rod 320 rotates around the second rotating shaft 512, the connecting rod 320 enables the stop rod 310 to overcome the stop spring 410 to move rightwards through the abdicating groove and the first rotating shaft 511 until the stop rod is separated from the stop clamping groove 211, at the moment, the spring drives the piston to move downwards until the pressure in the first differential pressure pipe 271 is restored to move the power piston 430 rightwards, so that the connecting rod can be reset, at the moment, the stop rod locks the axial direction of the piston, so that the pushing force of the spring is prevented from being completely applied to the piston, and the almost linear elasticity releasing of.

The details of the present invention are well known to those skilled in the art.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. Automatic filling device of lubricating grease, characterized by: the filling device comprises a filling cylinder and a top cover, wherein a hollow inner cylinder is arranged in the filling cylinder; the inner cylinder and the piston can be assembled in a sliding and sealing way; the top cover is fixed on the top of the filling cylinder and seals the inner cylinder, the piston is fixedly assembled with one end of the push rod, the other end of the push rod penetrates through the top cover and the retaining block, the retaining block is fixed on the top cover, and the push rod is provided with a plurality of stop clamping grooves distributed along the axial direction of the push rod;

2. The automatic grease filling apparatus according to claim 1, characterized in that: the bottom of the inner cylinder is provided with a taper hole, the bottom of the piston is provided with a cone body part, and the cone body can be arranged in the taper hole.

3. The automatic grease filling apparatus according to claim 1, characterized in that: the first rotating shaft is installed in the abdicating groove and assembled with the first rotating shaft in a sliding mode, the abdicating groove is formed in one end of the connecting rod, the middle part of the connecting rod is hinged to a supporting plate fixed to the top cover through the second rotating shaft, the top of the connecting rod is hinged to one end of the abdicating driving rod through the third rotating shaft, the other end of the abdicating driving rod is installed in a power inner cavity inside the power shell and assembled and fixed with the power piston, the power piston is clamped and assembled in the power inner cavity in a sliding mode, and a resistance spring is installed between the inner wall end face.

4. An automatic grease filling apparatus according to claim 3, characterized in that: the parts of the power inner cavity, which are positioned on two sides of the power piston, are respectively communicated with one end of a first differential pressure pipe and one end of a second differential pressure pipe, the other ends of the first differential pressure pipe and the second differential pressure pipe are respectively communicated with a second filling pipe and a first filling pipe which are positioned on two sides of a differential pressure valve, and two ends of the first filling pipe are respectively communicated with a connecting pipe and one end inside the differential pressure inner cavity; one end of the second filling pipe is communicated with the other end of the differential pressure inner cavity, the other end of the second filling pipe is communicated with the lubricating grease filling position, and the connecting pipe is communicated with the taper hole.

5. The automatic grease filling apparatus according to claim 4, characterized in that: the pressure-reducing valve is characterized in that a flow measuring channel, a pressure-reducing hole and a pressure-reducing groove are respectively arranged in the differential pressure inner cavity, two ends of the flow measuring channel are respectively communicated with two ends of the differential pressure inner cavity, the pressure-reducing groove is arranged on part of the inner wall of the pressure-reducing hole, the pressure-reducing hole is clamped with a pressure-reducing piston and assembled in a sliding mode, the pressure-reducing piston and the pressure-reducing hole are not provided with the pressure-reducing groove in a sealing mode, and a pressure-reducing spring is arranged between the pressure-reducing piston and the side face.