CN217635015U - Multi-path lubricating grease distribution device - Google Patents

Abstract

The utility model provides a multichannel lubricating grease distributor, include: the oil supply valve comprises a valve body, wherein an oil inlet hole, a plurality of oil outlet holes and a plurality of oil supply channels are formed in the valve body; the oil outlet is communicated with the oil inlet through one of the oil supply channels; the control valves are arranged in the oil supply channel in a one-to-one manner and are used for controlling the opening and closing of the oil supply channel; the opening and closing device comprises a rotating base, a pressing assembly and a rotary driving assembly, the rotating base is rotatably arranged on the upper end face of the valve body, the pressing assembly is fixedly arranged on the rotating base, the pressing assembly is used for opening and closing the corresponding control valve through a pressed part of the pressing control valve, and the rotary driving assembly is used for driving the rotating base to rotate. The utility model has the advantages that: whole distribution device compact structure, small, easy installation, with low costs, stable performance, for traditional formula valve structure that advances one by one, the utility model discloses an accurate controllable, the required oil pressure of the oil output of each oil outlet is littleer.

Description

Multi-path lubricating grease distribution device

Technical Field

The present invention relates to a grease supply device, and more particularly, to a multi-way grease dispensing device.

Background

Grease dispensers are used for lubrication of machines or equipment, particularly dispensing devices with reciprocating dispensing slide valves. The lubricating oil can be widely used in enterprises or fields of metallurgy, mines, heavy machinery, electric power, chemical engineering, building materials, petroleum, ports, docks, papermaking, ship locks, environmental protection, military industry, machine tools, tunnel engineering and the like, and is an important component matched with automatic lubrication.

At present, each oil way of the distributor on the market is basically controlled by an electromagnetic valve independently, so that the structure of the distributor is too complex and the distributor is huge.

Disclosure of Invention

In view of this, the present invention provides a multi-way grease distributing device, which has a reasonable structural design.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a multiple grease dispensing device comprising:

the oil supply valve comprises a valve body, wherein an oil inlet hole, a plurality of oil outlet holes and a plurality of oil supply channels are formed in the valve body; the oil outlet is communicated with the oil inlet through one of the oil supply channels;

the control valves are arranged in the oil supply channel in a one-to-one manner and are used for controlling the opening and closing of the oil supply channel; the upper end of the control valve is provided with a pressed part for triggering the opening or closing action of the control valve, and the pressed part extends out of the upper end surface of the valve body;

the opening and closing device comprises a rotating base, a pressing assembly and a rotating driving assembly, wherein the rotating base is rotatably arranged on the upper end surface of the valve body; the control valves are distributed at intervals along the rotating direction of the rotating base, the pressing assemblies are used for realizing opening and closing of the corresponding control valves through pressing the pressed parts of the control valves, and the rotating driving assemblies are used for driving the rotating base to rotate so as to move the pressing assemblies to the positions corresponding to the pressed parts of any one control valve.

Preferably, the valve body is cylindrical, an oil inlet cavity is formed in the center of the interior of the valve body, and the oil inlet hole is located in the middle of the bottom of the valve body and is communicated with the oil inlet cavity; the oil outlet holes are arranged on the side wall of the valve body at intervals along the circumferential direction of the valve body; the oil supply channels are arranged at intervals along the circumferential direction of the valve body and comprise a transverse cavity and a vertical cavity which are mutually crossed and communicated, the transverse cavity extends along the radial direction of the valve body, one end of the transverse cavity is communicated with the oil inlet cavity, the other end of the transverse cavity penetrates through the side wall of the valve body, and an oil plug is arranged at the penetrating position; the vertical cavity extends along the axial direction of the valve body, and two ends of the vertical cavity penetrate through the end face of the valve body; the oil outlet is communicated with the vertical cavity; the control valve is installed in the vertical cavity, the upper end of the control valve seals the upper end of the vertical cavity, and the lower end of the control valve seals the lower end of the vertical cavity.

Preferably, a steel ball valve seat is formed on the inner wall of the vertical cavity, and the middle part of the steel ball valve seat is arranged in a penetrating manner along the longitudinal direction to form a central hole; the side surface of the middle part of the steel ball valve seat is communicated with the oil outlet;

the control valve comprises a shaft sleeve, an oil seal, a thrust plate, a steel ball, an ejector pin, a spring and a sealing seat; the sealing seat is fixed at the lower port of the vertical cavity; the shaft sleeve, the oil seal and the thrust plate are fixedly arranged in the vertical cavity from top to bottom in sequence and are positioned above the steel ball valve seat; the steel ball and the spring are positioned below the steel ball valve seat, and the diameter of the steel ball is smaller than that of the vertical cavity; the lower end of the spring is abutted against the sealing seat, the upper end of the spring is abutted against the steel ball, and in a natural state, the spring pushes the steel ball to be tightly attached to the steel ball valve seat and seals a central hole of the steel ball valve seat; the thimble is vertically arranged in the vertical cavity, the upper end of the thimble sequentially penetrates through the thrust plate, the oil seal and the shaft sleeve and then extends out of the upper port of the vertical cavity, and the lower end of the thimble penetrates through the steel ball valve seat and then abuts against the steel ball; and a gap for oil to pass through is reserved between the thimble and the inner side wall of the central hole of the steel ball valve seat.

Preferably, at least one pair of arc surfaces is arranged on the side wall of the lower half section of the thimble, and the pair of arc surfaces is arranged in central symmetry with the central axis of the thimble; and in the process of moving the thimble up and down, the arc surface is always in contact with the inner side wall of the central hole of the steel ball valve seat.

Preferably, the rotary drive assembly comprises a first motor, a bracket, a main synchronizing wheel and a secondary synchronizing wheel; the first motor is fixed on the valve body through a support, the main synchronizing wheel is fixed on an output shaft of the first motor, the auxiliary synchronizing wheel is coaxially fixed on the rotating base, and the main synchronizing wheel and the auxiliary synchronizing wheel are in transmission fit through a synchronous belt.

Preferably, the pressing assembly comprises a rod sleeve, a rotating rod, a pressing rod, a second motor and a first reduction gear box; the first reduction gear box is fixed above the rotating base through a plurality of supporting rods, and the second motor is installed at the input end of the first reduction gear box; the upper end of the rod sleeve is arranged at the output end of the lower end of the first reduction gear box, the lower end of the rod sleeve is provided with a slot into which the upper end of the rotating rod is inserted, and the cross sections of the slot and the rotating rod are of non-circular structures; the upper end of the pressure lever is fixed at the lower end of the rotating rod, a threaded hole is formed in the rotating base, and an external thread section matched with the threaded hole is arranged at the lower end of the pressure lever.

Preferably, the pressing assembly comprises a pressing wheel, a rotating arm and a stop lever; one end of the rotating arm is rotatably connected to the rotating base, so that the rotating arm can swing left and right relative to the rotating base; the stop lever is fixedly arranged on the rotating base, an elastic piece is arranged at the joint of the rotating arm and the rotating base, and the elastic piece drives the rotating arm to be tightly attached to the stop lever in a natural state.

Preferably, the pinch roller is arranged at the other end of the rotating arm through a bearing; and a bull eye bearing is mounted at the upper end of the compression part.

Preferably, the rotary driving assembly comprises a mounting frame, a third motor, a second reduction gear box and a connecting rod, the second reduction gear box is fixed above the rotary base through the mounting frame, and the third motor is mounted at the input end of the second reduction gear box; the upper end of the connecting rod is installed at the output end of the lower end of the second reduction gear box, and the lower end of the connecting rod is coaxially and fixedly connected with the rotating base.

Preferably, a position sensor is further arranged on the valve body, and a sensing piece capable of triggering the position sensor is mounted on the rotating base.

The technical effects of the invention are mainly embodied in the following aspects:

1. the control valve is arranged on the valve body along the circumferential direction, and the pressing assembly rotates along the circumferential direction of the rotating base, so that the opening and closing operation of any control valve is realized, the rotary position switching action is adopted, the process is smooth, and the problem of blockage is avoided;

2. a simple control valve structure is adopted and arranged in the valve body, and the control valve structure is matched with the internal structure of the valve body to complete the switching function, so that the cost is lower compared with the traditional electromagnetic valve mode;

3. compared with the traditional progressive valve structure, the oil outlet quantity of each oil outlet hole is accurately controllable, namely: the oil outlet amount is controlled by operating the opening time of each control valve;

4. the present invention requires less supply pressure than conventional progressive valve configurations.

5. The whole distribution device has compact structure, small volume and easy installation.

Drawings

FIG. 1 is an overall configuration view of a multi-way grease distributing apparatus in the embodiment;

FIG. 2 is a schematic view showing an installation structure of a control valve in the embodiment;

FIG. 3 is a sectional view of the lower end surface of the thimble in the embodiment;

FIG. 4 is a view showing an installation structure of a rotary base in the embodiment;

FIG. 5 is a schematic view of another embodiment of an opening and closing device in the embodiment;

figure 6 is a schematic diagram of the operation of the puck in an embodiment.

Reference numerals: 1. a valve body; 11. an oil inlet hole; 12. an oil outlet; 13. an oil inlet cavity; 14. a transverse cavity; 15. a vertical cavity; 16. an annular limiting seat; 17. a steel ball valve seat; 18. oil blocking; 2. a control valve; 21. a thimble; 211. a circular arc surface; 22. a shaft sleeve; 23. oil sealing; 24. a thrust plate; 25. a steel ball; 26. a spring; 27. a sealing seat; 3. rotating the base; 31. a bearing; 32. a rotating shaft; 4. a rotary drive assembly; 41. a support; 42. a first motor; 43. a main synchronizing wheel; 44. a synchronous belt; 45. a secondary synchronizing wheel; 5. a pressing assembly; 51. a second motor; 52. a first reduction gear box; 53. a rod sleeve; 54. rotating the rod; 55. a pressure lever; 56. a base plate; 61. a position sensor; 62. a sensing member; 71. a base; 72. an oil inlet pipe; 73. an oil outlet pipe; 81. a third motor; 82. a second reduction gear box; 83. a mounting frame; 84. a connecting rod; 91. a rotating arm; 92. a pinch roller; 93. a stop lever; 10. a bull eye bearing.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Referring to fig. 1, the present embodiment provides a multi-way grease distributing device, which includes three parts, namely a valve body 1, a control valve 2 and an opening and closing device. The bottom of the valve body 1 is provided with a base 7, which is convenient to install.

An oil inlet hole 11 and a plurality of oil outlet holes 12 are formed in the valve body 1, an oil inlet pipe 8 is arranged on the oil inlet hole 11, and an oil outlet pipe 9 is arranged on the oil outlet hole 12. Preferably, the valve body 1 is cylindrical, the valve body 1 has an oil inlet chamber 13 at an inner center position, and the oil inlet hole 11 is located at a bottom middle position of the valve body 1 and is communicated with the oil inlet chamber 13. The inside a plurality of oil supply channels that are provided with of valve body 1, a plurality of oil supply channels set up along the circumference interval of valve body, including the horizontal chamber 14 and the perpendicular chamber 15 of intercrossing intercommunication, wherein, horizontal chamber 14 extends along the radial of valve body, and the one end and the oil feed chamber intercommunication of horizontal chamber 14, and the other end pierces through the lateral wall of valve body, should pierce through the department and install oil plug 18. The vertical cavity 15 extends in the axial direction of the valve body and both ends penetrate the end surface of the valve body 1. The oil outlet hole 12 extends in a radial direction and communicates with the vertical cavity 15 one by one.

The control valve 2 itself and the manner of mounting the control valve will be described in detail with reference to fig. 1 and 2.

The control valves 2 are provided with a plurality of oil supply channels, the number of the oil supply channels is the same as that of the oil supply channels, and the control valves are installed in the vertical cavities 15 one to one and used for controlling the opening and closing of the oil supply channels 15.

Specifically, a steel ball valve seat 17 is formed on the inner wall of the vertical cavity 15, and the middle part of the steel ball valve seat 17 is arranged in a penetrating manner along the longitudinal direction to form a central hole; the middle side of the steel ball valve seat 17 is communicated with the oil outlet 12, namely the steel ball valve seat 17 is divided into an upper part and a lower part, the upper part is positioned at the upper side communicated with the oil outlet 12, and the lower part is positioned at the lower side communicated with the oil outlet 12.

The control valve 2 comprises a shaft sleeve 22, an oil seal 23, a thrust plate 24, a steel ball 25, an ejector pin 21, a spring 26 and a sealing seat 27; the sealing seat 27 is fixed to the lower port of the vertical cavity 15, and the connection mode can be a threaded connection. The shaft sleeve 22, the oil seal 23 and the thrust plate 24 are sequentially and fixedly arranged in the vertical cavity 15 from top to bottom and are positioned above the steel ball valve seat 17, wherein the shaft sleeve 22 is positioned at the upper port of the vertical cavity 15, and the connection mode of the shaft sleeve 22 and the inner wall of the vertical cavity 15 can be threaded connection.

The steel ball 25 and the spring 26 are positioned below the steel ball valve seat 17, and the diameter of the steel ball 25 is smaller than that of the vertical cavity 15 so as to form a gap for grease to pass through with the inner wall of the vertical cavity 15. The lower end of the spring 26 is abutted with the sealing seat 27, the upper end of the spring is abutted with the steel ball 25, and in a natural state, the spring 26 pushes the steel ball 25 to be tightly attached to the steel ball valve seat 17 and plugs the central hole of the steel ball valve seat 17. Meanwhile, in order to facilitate the smooth movement of the steel ball 25 to the central hole position when the steel ball valve seat 17 is in contact with it, the lower end surface of the steel ball valve seat 17 is provided with an annular guide inclined surface.

The thimble 21 is vertically arranged in the vertical cavity 15, the upper end of the thimble sequentially passes through the thrust plate 24, the oil seal 23 and the shaft sleeve 22 and then extends out of the upper port of the vertical cavity 15, and the lower end of the thimble passes through the steel ball valve seat 17 and then abuts against the steel ball 25; a gap for oil to pass through is reserved between the thimble 21 and the inner side wall of the steel ball valve seat 17. When the thimble 21 is pressed by an external force, the steel ball 25 can be pushed downwards, so that the central hole of the steel ball valve seat 17 is opened, otherwise, when the thimble 21 is released, the steel ball 25 blocks the central hole again. Therefore, the needle 21 serves as a pressure receiving member that can trigger the opening and closing operation of the control valve 2.

In addition, referring to fig. 3, at least one pair of arc surfaces 211 is provided on the side wall of the lower half section of the thimble 21, and the pair of arc surfaces 211 is arranged in central symmetry with the central axis of the thimble 21; in the process of moving the thimble 21 up and down, the arc surface 211 is always in contact with the inner side wall of the central hole of the steel ball valve seat 17. So set up not only can guarantee the passing through of grease, can also realize the guide effect to thimble 21 with the cooperation of steel ball valve seat 17, guarantee the stability when thimble 21 reciprocates.

The opening and closing device comprises a rotating base 3 rotatably arranged on the upper end surface of the valve body 1, a pressing component 5 fixedly arranged on the rotating base 3 and a rotary driving component 4. It can be seen that, when the cylindrical valve body 1 is adopted, the rotating base 3 is located at the central position of the upper end face of the valve body 1, and the plurality of control valves 2 are distributed at intervals on the periphery of the rotating base 3 along the rotating direction of the rotating base 3. Specifically, the center of the upper end surface of the valve body 1 is provided with a mounting groove for mounting the rotating base 3. The rotating base 3 comprises a bearing 31 and a rotating shaft 32, the bearing 31 is fixedly arranged in the mounting groove, the rotating shaft 32 is vertically and fixedly sleeved on an inner ring of the bearing 31, and the auxiliary synchronizing wheel 45 is fixedly sleeved on the rotating shaft 32.

In this embodiment, two different solutions are adopted for the pressing component 5 and the rotation driving component 4, and the two different solutions will be described in detail below.

Scheme one,

Referring to fig. 1 and 4, the rotary drive assembly includes 4 a first motor 42, a bracket 41, a main synchronizing wheel 43, and a sub-synchronizing wheel 45; the first motor 42 is fixed on the valve body 1 through the bracket 41, the main synchronizing wheel 43 is fixed on an output shaft of the first motor 42, the auxiliary synchronizing wheel 45 is coaxially fixed on the rotating base 3, and the main synchronizing wheel 43 and the auxiliary synchronizing wheel 45 realize transmission matching through the synchronous belt 44. Therefore, when the first motor 42 rotates, the rotating base 3 is driven to rotate.

The pressing component 5 comprises a bottom plate 56, a plurality of support rods, a rod sleeve 53, a rotating rod 54, a pressing rod 55, a second motor 51 and a first reduction gear box 52; the bottom plate 56 is fixed on the upper end of the rotating shaft 32 by bolts or other means, the first reduction gear box 52 is fixed above the bottom plate 56 by a plurality of support rods, and the second motor 51 is installed at the input end of the first reduction gear box 52. The upper end of the rod sleeve 53 is mounted at the output end of the lower end of the first reduction gear box 52, the lower end of the rod sleeve 53 is provided with a slot for inserting the upper end of the rotating rod 54, the cross sections of the slot and the rotating rod 54 are in a non-circular structure, for example, a hexagonal structure is adopted, namely, the slot is an inner hexagonal, and the rotating rod 54 is an outer hexagonal. The upper end of the pressure lever 55 is fixed at the lower end of the rotating lever 54, a threaded hole is formed in the bottom plate 56, and an external thread section matched with the threaded hole is arranged at the lower end of the pressure lever 55. When the second motor 51 rotates, the pressing rod 55 can be indirectly driven to rotate, and since the pressing rod 55 is in threaded connection with the bottom plate 56, the pressing rod 55 can move downwards when the second motor 51 rotates forwards and upwards when the second motor rotates backwards. When the pressing rod 55 is located right above one of the control valves 2, the pressing rod 55 is pressed down to drive the thimble 21 of the control valve 2 to move into the oil supply channel, so as to open the corresponding oil supply channel.

Referring to fig. 1, a position sensor 6 is further provided on the valve body 1, and a sensor that can trigger the position sensor 6 is attached to the bottom plate 56. The position sensor 6 may employ a proximity switch. The initial position of the base plate 56, i.e. the initial position of the pressure lever 55 in the direction of rotation of the swivel base 3, can be set by means of the position sensor 6.

The working principle of the first scheme is as follows:

the reset is performed to control the first motor 42 to rotate in reverse until the position sensor 6 is triggered. Then, the first motor 42 is controlled to rotate forward by a corresponding angle, so that the pressure rod 55 moves above the corresponding control valve 2. It should be noted that, the control valves 2 are arranged at equal intervals, so that the angle of rotation of the pressure lever 55 from the initial position to each control valve 2 is determined, and the rotation angle of the first motor 42 is calculated through the angle, so that the first motor 42 can be precisely controlled. After moving above the corresponding control valve 2, the second motor 51 is controlled to rotate for a preset time, so as to drive the pressing rod 55 to move downwards by a corresponding distance to press down the thimble 21, and open the corresponding oil supply channel. When oil supply needs to be finished, the second motor 51 is controlled to rotate reversely, so that the pressure rod 55 moves upwards, the ejector pin 21 resets, and the oil supply channel is closed; finally, the first motor 42 is controlled to rotate in reverse until the position sensor 6 is triggered.

Scheme II,

Referring to fig. 5 and 6, the pressing assembly 5 includes a pressing wheel 92, a rotating arm 91 and a blocking lever 93; one end of the rotating arm 91 is rotatably connected to the rotating base 3, so that the rotating arm 91 can swing left and right relative to the rotating base 3; the stop lever 93 is fixedly arranged on the rotating base 3, an elastic part is arranged at the joint of the rotating arm 91 and the rotating base 3, and in a natural state, the elastic part drives the rotating arm 91 to be tightly attached to the stop lever 93, and the elastic part can adopt a return spring 26. The pressing wheel 92 is mounted on the other end of the rotating arm 91 through a bearing 31 and can rotate around the axis of the rotating arm 91, and the upper end of the thimble 21 is provided with a bullseye bearing 10.

The rotary driving assembly 4 comprises a mounting frame 83, a third motor 81, a second reduction gear box 82 and a connecting rod 84, the second reduction gear box 82 is fixed above the rotary base 3 through the mounting frame 83, and the third motor 81 is installed at the input end of the second reduction gear box 82; the upper end of the connecting rod 84 is installed at the output end of the lower end of the second reduction gear box 82, the lower end of the connecting rod 84 is coaxially and fixedly connected with the rotating base 3, and the rotating base 3 can be driven to rotate by controlling the third motor 81.

In addition, unlike the first embodiment, the position sensor 61 is fixed on the mounting bracket 83, and the sensing member 62 is fixed on the connecting rod 84, so that the sensing member 62 can trigger the position sensor 61 when the sensing member 62 returns to the initial position along with the rotation of the connecting rod 84.

The working principle of the second scheme is as follows:

when a certain control valve 2 is to be opened, the third motor 81 is controlled to rotate clockwise by a corresponding angle, in the rotating process, the pressing wheel 92 rotates to a position contacting with the thimble 21, at this time, the wheel surface of the pressing wheel 92 contacts with the eyelet bearing 31 at the upper end of the thimble 21, rolling friction is formed between the wheel surface and the eyelet bearing 31, and due to the existence of the blocking rod 93, the rotating arm 91 does not rotate reversely, so that the pressing wheel 92 continues to rotate clockwise, and the thimble 21 is gradually pressed downwards, and the corresponding control valve 2 is opened.

When resetting, the third motor 81 is controlled to rotate reversely, at this time, the pressing wheel 92 rotates anticlockwise along with the rotating base 3, when the pressing wheel 92 contacts with the thimble 21, the pressing wheel is blocked, and then the pressing wheel rotates clockwise around a connection point with the rotating base 3, namely, the rotating arm 91 turns over towards the center of the rotating base 3, so that the radial distance from the outermost end of the pressing wheel 92 to the center of the valve body 1 is gradually reduced, until the radial distance is smaller than or equal to the radial distance of the thimble 21, the pressing wheel 92 rotates anticlockwise along with the rotating base 3 along with the thimble 21, until the rotating arm 91 passes over the thimble 21, the rotating arm 91 resets again under the driving of the reset spring 26, and in order to make the process smoother, the front end of the pressing wheel 92 is set to be a conical surface. And so on until the rotating base 3 is rotated to the initial position.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims (10)

1. A multi-way grease dispensing device, comprising:

the oil-saving valve comprises a valve body (1), wherein an oil inlet hole (11), a plurality of oil outlet holes (12) and a plurality of oil supply channels are formed in the valve body (1); the oil outlet hole (12) is communicated with the oil inlet hole (11) through one of the oil supply channels;

the control valves (2) are installed in the oil supply channel in a one-to-one mode and are used for controlling the opening and closing of the oil supply channel; the upper end of the control valve (2) is provided with a pressed part for triggering the self opening or closing action, and the pressed part extends out of the upper end surface of the valve body (1);

the opening and closing device comprises a rotating base (3) rotatably arranged on the upper end surface of the valve body (1), a pressing component (5) fixedly arranged on the rotating base (3) and a rotary driving component (4); a plurality of direction of rotation interval distribution of rotating base (3) is followed in control valve (2), press subassembly (5) and be used for through pressing the opening and close of corresponding control valve (2) is realized to the part that receives of control valve (2), rotary drive subassembly (4) are used for through drive rotating base (3) rotation with will press subassembly (5) to remove to the position that receives the part correspondence with arbitrary one control valve (2).

2. A multi-way grease distributing device according to claim 1, characterized in that the valve body (1) is cylindrical, the valve body (1) has an oil inlet chamber (13) at the center of the inside, and the oil inlet hole (11) is located at the middle position of the bottom of the valve body (1) and is communicated with the oil inlet chamber (13); the oil outlet holes (12) are arranged on the side wall of the valve body (1) at intervals along the circumferential direction of the valve body (1); the oil supply channels are arranged at intervals along the circumferential direction of the valve body (1), each oil supply channel comprises a transverse cavity (14) and a vertical cavity (15) which are mutually crossed and communicated, the transverse cavities (14) extend along the radial direction of the valve body (1), one end of each transverse cavity (14) is communicated with the oil inlet cavity (13), the other end of each transverse cavity penetrates through the side wall of the valve body (1), and an oil plug (18) is arranged at the penetrating position; the vertical cavity (15) extends along the axial direction of the valve body (1) and two ends of the vertical cavity penetrate through the end face of the valve body (1); the oil outlet (12) is communicated with the vertical cavity (15); the control valve (2) is installed in the vertical cavity (15), the upper end of the vertical cavity (15) is sealed by the upper end of the control valve (2), and the lower end of the vertical cavity (15) is sealed by the lower end of the control valve (2).

3. A multi-way grease distributing device according to claim 2, characterized in that a steel ball valve seat (17) is formed on the inner wall of the vertical cavity (15), and the middle part of the steel ball valve seat (17) is arranged to penetrate through along the longitudinal direction to form a central hole; the side surface of the middle part of the steel ball valve seat (17) is communicated with the oil outlet (12);

the control valve (2) comprises a shaft sleeve (22), an oil seal (23), a thrust plate (24), a steel ball (25), an ejector pin (21), a spring (26) and a sealing seat (27); the sealing seat (27) is fixed at the lower port of the vertical cavity (15); the shaft sleeve (22), the oil seal (23) and the thrust plate (24) are fixedly arranged in the vertical cavity (15) from top to bottom in sequence and are positioned above the steel ball valve seat (17); the steel ball (25) and the spring (26) are positioned below the steel ball valve seat (17), and the diameter of the steel ball (25) is smaller than that of the vertical cavity (15); the lower end of the spring (26) is abutted against the sealing seat (27), the upper end of the spring is abutted against the steel ball (25), and in a natural state, the spring (26) pushes the steel ball (25) to be tightly attached to the steel ball valve seat (17) and seals a central hole of the steel ball valve seat (17); the thimble (21) is vertically arranged in the vertical cavity (15), the upper end of the thimble sequentially penetrates through the thrust plate (24), the oil seal (23) and the shaft sleeve (22) and then extends out of the upper port of the vertical cavity (15), and the lower end of the thimble penetrates through the steel ball valve seat (17) and then is abutted against the steel ball (25); and a gap for oil to pass through is reserved between the thimble (21) and the inner side wall of the central hole of the steel ball valve seat (17).

4. A multi-way grease distributing device according to claim 3, characterized in that the side wall of the lower half section of the thimble (21) is provided with at least one pair of circular arc surfaces (211), and the pair of circular arc surfaces (211) are arranged in a central symmetry with the central axis of the thimble (21); in the process that the thimble (21) moves up and down, the arc surface (211) is always in contact with the inner side wall of the central hole of the steel ball valve seat (17).

5. A multiple grease distributing device according to claim 1, wherein the rotary driving unit (4) comprises a first motor (42), a bracket (41), a main synchronizing wheel (43) and a sub-synchronizing wheel (45); the first motor (42) is fixed on the valve body (1) through a support (41), the main synchronizing wheel (43) is fixed on an output shaft of the first motor (42), the auxiliary synchronizing wheel (45) is coaxially fixed on the rotating base (3), and the main synchronizing wheel (43) and the auxiliary synchronizing wheel (45) are in transmission fit through a synchronous belt (44).

6. A multiple-way grease distributing device according to claim 1 or 5, characterized in that the pressing assembly (5) comprises a lever sleeve (53), a rotating lever (54), a pressing lever (55), a second motor (51) and a first reduction gearbox (52); the first reduction gear box (52) is fixed above the rotating base (3) through a plurality of support rods, and the second motor (51) is installed at the input end of the first reduction gear box (52); the upper end of the rod sleeve (53) is arranged at the output end of the lower end of the first reduction gear box (52), the lower end of the rod sleeve (53) is provided with a slot into which the upper end of the rotating rod (54) is inserted, and the cross sections of the slot and the rotating rod (54) are of non-circular structures; the upper end of the pressing rod (55) is fixed at the lower end of the rotating rod (54), a threaded hole is formed in the rotating base (3), and an external thread section matched with the threaded hole is arranged at the lower end of the pressing rod (55).

7. A multiple grease dispensing device according to claim 1, wherein the pressing assembly (5) comprises a pressing wheel (92), a rotating arm (91) and a stopper (93); one end of the rotating arm (91) is rotatably connected to the rotating base (3) so that the rotating arm (91) can swing left and right relative to the rotating base (3); the stop lever (93) is fixedly arranged on the rotary base (3), an elastic part is arranged at the joint of the rotating arm (91) and the rotary base (3), and the elastic part drives the rotating arm (91) to be tightly attached to the stop lever (93) in a natural state; the pinch roller (92) is arranged at the other end of the rotating arm (91) through a bearing (31).

8. A multiple grease distributing device according to claim 7, wherein a bull's eye bearing (10) is installed at the upper end of the pressure receiving part.

9. A multiple grease distributing device according to claim 1, wherein the rotary driving assembly (4) comprises a mounting bracket (83), a third motor (81), a second reduction gear box (82) and a connecting rod (84), the second reduction gear box (82) is fixed above the rotary base (3) through the mounting bracket (83), and the third motor (81) is installed at the input end of the second reduction gear box (82); the upper end of the connecting rod (84) is installed at the output end of the lower end of the second reduction gear box (82), and the lower end of the connecting rod (84) is coaxially and fixedly connected with the rotating base (3).

10. A multiple grease dispensing device according to claim 1, characterized in that the opening and closing means further comprises a position sensor (6) for indicating the initial position of the rotating base, and a sensor member for triggering the position sensor (6).

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