Automatic lubricating unit for bidirectional progressive grease injection

Abstract

The utility model discloses an automatic lubrication unit for bi-directional progressive grease injection, which belongs to the technical field of bearing lubrication and comprises a plunger, the plunger is movably connected onto a pump body, a screw plug is arranged on one side of the plunger, a containing cavity is arranged between the plunger and the screw plug, a plurality of grease discharge holes are arranged on the upper side and the lower side of the pump body, and an upper flow channel and a lower flow channel are communicated with the containing cavity. A first grease discharging assembly is arranged in the upper flow channel, a second grease discharging assembly is arranged on one side of the first grease discharging assembly, a third grease discharging assembly is arranged in the lower flow channel, the upper flow channel and the lower flow channel communicate with a plurality of grease discharging holes through grease discharging grooves correspondingly, and the grease discharging holes communicate with a spring energy storage device in parallel through pipelines. The upper portion of the containing cavity is connected with a grease supplementing assembly through a pipeline, each grease discharging hole is communicated with a spring energy storage device in parallel through a pipeline, and the phenomena that a certain point is blocked due to damage and deformation of a conveying pipeline and dramatic increase of the viscosity of lubricating grease, then a system fails, and the lubricating grease in the bearing is insufficient can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing lubrication, in particular to an automatic lubrication unit for bidirectional progressive grease injection. Background Art

[0002] In mechanical equipment and industrial production processes, the role of the lubrication system is crucial. The lubrication system can reduce friction, reduce wear, extend the service life of the equipment, and improve the operating efficiency and reliability of the equipment. Traditional lubrication methods mainly include manual lubrication and simple automatic lubrication devices. In order to improve the service life, efficiency, energy conservation and environmental protection of heavy equipment, various heavy equipment and vehicles have adopted automatic lubrication systems. The existing automatic lubrication system mainly consists of an integrated grease supply unit plus a dispenser to inject grease into the bearing of the main machine at a fixed time and quantity. The original intention of the design of this lubrication system is to inject grease into the bearing at a fixed time and quantity according to the loss of grease in the bearing.

[0003] However, the aging, contamination and partial drying of the grease in the bearing will still have a great impact on the service life and efficiency of the bearing. Especially for military tanks, chariots, high-speed vehicles, shield machines, oil field vehicles and equipment, and earth-moving machinery, due to the harsh working environment and large temperature differences during operation, damage and deformation of the conveying pipeline and a sharp increase in grease viscosity will cause blockage at a certain point, which will cause system failure, resulting in insufficient grease in the bearing, accelerated wear on the surface of the bearing moving parts, and reduced service life and efficiency of the bearing. Utility Model Content

[0004] The utility model aims to provide an automatic lubrication unit for bidirectional progressive grease injection to solve the problems raised in the above-mentioned prior art.

[0005] The purpose is to provide an automatic lubrication unit for bidirectional progressive grease injection to solve the problems raised in the above-mentioned prior art.

[0006] Provided is an automatic lubrication unit for bidirectional progressive grease injection, comprising a plunger, the plunger being movably connected to a pump body, a screw plug being arranged on one side of the plunger, a receiving cavity being arranged between the plunger and the screw plug, and a plurality of grease discharge holes being arranged on the upper and lower sides of the pump body;

[0007] An upper flow channel and a lower flow channel are respectively provided on the upper and lower sides of the plunger, the upper flow channel and the lower flow channel are in communication with the accommodating chamber, the upper flow channel is connected with the lower flow channel, a first fat discharge component is provided inside the upper flow channel, a second fat discharge component is provided on one side of the first fat discharge component, a third fat discharge component is provided inside the lower flow channel, a plurality of fat discharge holes are respectively connected on the upper flow channel and the lower flow channel through the fat discharge groove, and the plurality of fat discharge holes are connected in parallel with a spring energy accumulator through a pipeline;

[0008] The upper part of the accommodating cavity is connected with a grease replenishing component through a pipeline.

[0009] As a further embodiment of the present utility model: the first grease discharge assembly includes a first one-way valve seat, a first spring seat, a first spring and a first steel ball. The first one-way valve seat is arranged in the upper flow channel, and a first spring seat is arranged on the first one-way valve seat. A first spring is arranged on the first spring seat, and a first steel ball is connected to the first spring. The first steel ball is movably connected in the first spring seat. Under normal flow conditions and when the plunger moves to the right, when grease flows in from the upper flow channel, the grease will push the first steel ball to move upward and compress the first spring. In the process of the first steel ball being pushed, the grease flows out through the channel on the first one-way valve seat and enters various lubrication points in the lubrication system; when the movement direction of the plunger changes or the grease flows back, that is, moves to the left, the first spring will push the first steel ball downward and seal the internal grease channel of the first one-way valve seat to ensure that the grease can only flow in one direction and prevent the grease from flowing back in the system. The first grease discharge assembly realizes the one-way flow of grease through the cooperation of the first steel ball and the first spring.

[0010] As a further embodiment of the utility model: the second grease discharge assembly includes a second one-way valve seat, a second spring and a second steel ball, the second one-way valve seat is arranged on one side of the upper part of the upper flow channel, the second one-way valve seat is provided with a second spring, the second spring is connected to the second steel ball, and the second spring is connected to the second steel ball; when grease flows in from the upper flow channel, the grease will push the second steel ball to move upward and compress the second spring. In the process of the second steel ball being pushed, the grease flows out through the channel on the second one-way valve seat and enters various lubrication points in the lubrication system to prevent backflow. When grease flows in from the upper flow channel, the grease will push the second steel ball to move upward and compress the second spring. In the process of the second steel ball being pushed, the grease flows out through the channel on the second one-way valve seat and enters the left end cavity of the upper flow channel. When the direction of movement of the plunger changes or the grease refluxes, the second spring will push the second steel ball downward and seal the channel of the second one-way valve seat to ensure that the grease can only flow in one direction and prevent the grease from flowing back in the system.

[0011] As a further embodiment of the present invention: the third grease discharge component includes a third one-way valve seat, a third spring and a one-way valve core, the third one-way valve seat is arranged on the lower flow channel, the third spring is arranged in the third one-way valve seat, and the one-way valve core is arranged on the third spring, and the one-way valve core is slidably connected in the lower flow channel. When the plunger moves in the direction away from the screw plug and in the left direction, part of the grease accumulated in the second grease discharge component and the left end cavity of the upper flow channel is squeezed into the lower flow channel due to pressure, and part of the grease accumulated between the second grease discharge component and the left end cavity formed by the upper flow channel breaks through the one-way valve core and moves to the right. The one-way valve core does not seal the grease discharge groove on the lower flow channel, and the grease discharge groove introduces part of the grease accumulated between the second grease discharge component and the left end cavity of the upper flow channel into each grease discharge hole below the pump body in turn, and is discharged from each grease discharge hole through the pipeline to each grease injection point on the bearing.

[0012] As a further embodiment of the utility model: the spring energy accumulator includes a spring mounting seat, an adsorption spring is arranged in the spring mounting seat, the adsorption spring is connected to a movable plunger, and one end of the spring mounting seat is connected to a grease drainage hole through a pipeline. When a lubrication point in the lubrication system cannot enter due to a fluid resistance greater than a set value, the excess grease will enter the spring energy accumulator through the grease drainage hole, and the grease entering the spring energy accumulator will push the movable plunger to move backward, compressing the adsorption spring to store the excess grease in the spring mounting seat. When a lubrication point in the system needs more grease due to a fluid resistance less than a set value, the grease stored in the spring energy accumulator will re-enter the lubrication system through the grease drainage hole under the push of the adsorption spring, and the adsorption spring will push the movable plunger forward to release the stored grease to replenish the grease required by the lubrication point.

[0013] As a further embodiment of the utility model: a storage cavity is provided in the spring mounting seat, and the storage cavity is located in the spring mounting seat and is used for storing grease.

[0014] As a further embodiment of the utility model: the grease replenishing assembly includes a grease replenishing mounting seat, a grease replenishing one-way spring seat, a grease replenishing spring and a grease replenishing steel ball; the grease replenishing mounting seat is arranged above the accommodating cavity; a grease replenishing one-way spring seat is arranged in the grease replenishing mounting seat; a grease replenishing spring is arranged on the grease replenishing one-way spring seat; a grease replenishing steel ball is connected to the grease replenishing spring; and the grease replenishing steel ball is movably connected in the grease replenishing one-way spring seat.

[0015] As a further embodiment of the utility model: the exhaust assembly includes an exhaust joint seat, an exhaust spring and an exhaust steel ball, the exhaust joint seat is arranged on the pump body, the exhaust joint seat is provided with an exhaust spring, one end of the exhaust spring is connected to the exhaust steel ball, the exhaust steel ball is slidably connected in the exhaust joint seat, and one end of the exhaust joint seat is connected to the exhaust groove through a pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the initial state, the accommodating chamber between the right end of the plunger and the screw plug on the pump body, the upper flow channel, the lower flow channel and the spring accumulator are all filled with grease. The plunger moves to the right under the push of the external power device. The grease accumulated in the accommodating chamber is discharged into each grease discharge hole in turn through the first grease discharge component of the upper flow channel through the grease discharge groove, and is discharged from the grease discharge holes to the grease injection points on the bearing in turn. A small amount of grease is introduced through the second grease discharge component and discharged into the accommodating chamber at the left end of the upper flow channel of the plunger. When the fluid resistance of a certain lubrication point is greater than the set value, the excess grease will be stored in the spring accumulator. When the plunger moves to the left, part of the grease accumulated between the second grease discharge component and the accommodating chamber at the left end of the upper flow channel is squeezed into the lower flow channel due to pressure. The grease squeezes the third grease discharge component and is discharged from the lower grease discharge groove into each grease discharge hole at the bottom of the pump body in turn, and is discharged from the grease discharge holes to the grease injection points on the bearing in turn.

[0018] Similarly, when the fluid resistance of a lubrication point is greater than the set value, excess grease will be stored in the spring accumulator. During the movement to the left, since the grease flow direction is opposite to the rightward movement direction, the internal flow channels of the first and second grease discharge components will be closed during the grease reflux process in the upper flow channel, and the grease cannot flow back into the accommodating chamber. Negative pressure will be generated in the accommodating chamber, and the grease replenishing component will be pushed open for oil replenishment to prepare for the next grease injection cycle. When the grease viscosity of a grease discharge hole is too low, resulting in a fluid resistance less than the set value, the spring accumulator will replenish the stored grease into the grease discharge hole due to the pressure difference, ensuring a continuous supply of grease, avoiding damage and deformation of the conveying pipeline and a sharp increase in grease viscosity, which will cause blockage at a certain point, and then cause system failure, resulting in insufficient grease in the bearing, thereby improving the service life and lubrication efficiency of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the structural section of the initial state of the overall structure of an automatic lubrication unit for bidirectional progressive grease injection;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the first row of grease components provided by the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the second row of fat components provided by the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the third row of grease components provided by the utility model.

[0024] In the figure: 1, plunger; 11, screw plug; 111, upper flow channel; 112, lower flow channel; 113, grease discharge groove; 114, exhaust groove; 2, pump body; 21, accommodating chamber; 22, grease discharge hole;

[0025] 3. First grease discharge assembly; 31. First one-way valve seat; 32. First spring seat; 33. First spring; 34. First steel ball;

[0026] 4. Second grease discharge assembly; 41. Second one-way valve seat; 42. Second spring; 43. Second steel ball;

[0027] 5. The third grease discharge assembly; 51. The third one-way valve seat; 52. The third spring; 53. The one-way valve core;

[0028] 6. Spring energy accumulator; 61. Spring mounting seat; 611. Storage chamber; 62. Adsorption spring; 63. Active plunger;

[0029] 7. Grease replenishing assembly; 71. Grease replenishing mounting seat; 72. Grease replenishing one-way spring seat; 73. Grease replenishing spring; 74. Grease replenishing steel ball;

[0030] 8. Exhaust assembly; 81. Exhaust connector seat; 82. Exhaust spring; 83. Exhaust steel ball. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0032] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0033] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0034] See also Figures 1 to 4 As shown, in the embodiment of the utility model, an automatic lubrication unit for bidirectional progressive grease injection includes a plunger 1, which is movably connected to a pump body 2, a screw plug 11 is provided on one side of the plunger 1, and a receiving chamber 21 is provided between the plunger 1 and the screw plug 11, and the receiving chamber 21 is used to receive grease, and a plurality of grease discharge holes 22 are provided on the upper and lower sides of the pump body 2, and the plurality of grease discharge holes 22 are used to discharge grease;

[0035] An upper flow channel 111 and a lower flow channel 112 are respectively provided on the upper and lower sides of the plunger 1. The upper flow channel 111 and the lower flow channel 112 are in communication with the accommodating chamber 21. The upper flow channel 111 is connected to the lower flow channel 112. A first fat discharge component 3 is provided inside the upper flow channel 111. A second fat discharge component 4 is provided on one side of the first fat discharge component 3. A third fat discharge component 5 is provided in the lower flow channel 112. The upper flow channel 111 and the lower flow channel 112 are respectively connected to a plurality of fat discharge holes 22 through fat discharge grooves 113. The fat discharge grooves 113 are symmetrically arranged on both sides of the plunger 1 from top to bottom. The plurality of fat discharge holes 22 are connected in parallel with a spring accumulator 6 through pipelines. A fat replenishing component 7 is connected to the upper part of the accommodating chamber 21 through a pipeline.

[0036] In the initial state, the accommodating chamber 21 between the right end of the plunger 1 and the screw plug 11 on the pump body 2, as well as the flow channels on the upper flow channel 111 and the lower flow channel 112 are filled with grease, and the flow channel of the spring-type accumulator 6 is also filled with grease. The plunger 1 is pushed by an external power device to move rightward in the pump body 2 (it should be noted that the rightward direction is the movement of the plunger 1 toward the screw plug 11, and the leftward direction is the movement of the plunger 1 away from the screw plug 11). The grease accumulated in the accommodating chamber 21 flows in from the first grease discharge component 3 in the upper flow channel 111, and a part of the grease in the first grease discharge component 3 is directly introduced into the various grease discharge holes 22 arranged above the pump body 2 through the grease discharge groove 113 on the upper flow channel 111, and is discharged from the various grease discharge holes 22 to the various grease injection points on the bearing through the pipeline, and a small amount of grease is introduced into the left end accommodating chamber of the upper flow channel 111 of the plunger 1 through the second grease discharge component 4;

[0037] When a lubrication point has a fluid resistance greater than a set value due to the grease drying up and accumulating inside it or its pipeline deforming or the grease viscosity being too high due to the temperature difference in the working environment, the excess grease accumulated in the grease discharge hole 22 will be stored in the spring accumulator 6 connected in parallel with the pipeline of the grease discharge hole 22 to store the grease that failed to enter the lubrication point. After the rightward movement is completed;

[0038] The plunger 1 moves away from the screw plug 11 and to the left. At this time, part of the grease accumulated between the second grease discharge component 4 and the left end cavity of the upper flow channel 111 is squeezed into the lower flow channel 112 due to the pressure. The grease is squeezed into the third grease discharge component 5 due to the pressure difference. The third grease discharge component 5 does not seal the grease discharge groove 113 on the lower flow channel 112. Part of the grease accumulated between the second grease discharge component 4 and the left end cavity of the upper flow channel 111 is discharged into the grease pump through the grease discharge groove 113 on the lower flow channel 112. The grease is discharged from the grease discharge holes 22 below the body 2 to the grease injection points on the bearing through the pipelines. Similarly, when a lubricating point below has dry grease or its pipeline is deformed, or the viscosity of the grease is too high due to the temperature difference in the working environment, resulting in the liquid resistance of the point being greater than the set value, the excess grease accumulated in the grease discharge hole 22 below will be stored in the spring accumulator 6 connected in parallel with the pipeline of the grease discharge hole 22 below, storing the grease that failed to enter the lubricating point, and the movement in the left direction is completed;

[0039] During the leftward movement, since the flow direction of the grease is opposite to the rightward movement direction, during the grease reflux process in the upper flow channel 111, the internal flow channels of the first grease discharge component 3 and the second grease discharge component 4 will be closed, and the grease cannot flow back into the accommodating chamber 21. At this time, the grease contained in the accommodating chamber 21 cannot fill the entire accommodating chamber 21, and negative pressure will be generated in the accommodating chamber 21 to push open the grease replenishing component 7 to replenish oil and prepare for the next grease injection cycle;

[0040] On the contrary, when the plunger 1 moves to the left or right toward the pump body 2, when the viscosity of the grease in a grease discharge hole 22 is too low, resulting in the fluid resistance at that point being less than the set value, the spring energy accumulator 6 connected in parallel through pipelines on the upper and lower grease discharge holes 22 will replenish the stored grease into the grease discharge hole 22 due to the pressure difference, and the grease will be introduced into the bearing seat through the pipeline connected in the grease discharge hole 22, so as to realize automatic grease replenishment, automatically and progressively inject grease into the lubrication point and automatically adjust the injection amount according to its fluid resistance, and automatically replenish according to the loss of grease in the bearing during the operation of the main engine. When a blockage occurs at a certain point in the system, the grease that was originally required to be replenished is The grease injected into this point will enter the spring accumulator 6 of the system without clogging the system, and will automatically enter the next lubrication point of the same friction pair or the lubrication point of the next friction pair and be injected into the next lubrication point when its fluid resistance is less than the pressure set by the spring accumulator 6, thereby ensuring the supply of grease in the same friction pair and the normal operation of the lubrication system, effectively improving the lubrication environment inside the bearing, overcoming the shortcomings of the currently used lubrication technology, and avoiding damage and deformation of the conveying pipeline and a sharp increase in the viscosity of the grease, which will cause blockage at a certain point, thereby causing system failure, resulting in insufficient grease in the bearing, and improving the service life and lubrication efficiency of the bearing.

[0041] In one embodiment, see Figure 1 and Figure 2 As shown, the first grease discharge assembly 3 includes a first one-way valve seat 31, a first spring seat 32, a first spring 33 and a first steel ball 34. The first one-way valve seat 31 is arranged in the upper flow channel 111. The first one-way valve seat 31 is provided with a first spring seat 32, and the first spring seat 32 is provided with a first spring 33. The first spring 33 is connected with a first steel ball 34, and the first steel ball 34 is movably connected in the first spring seat 32. Under normal flow conditions and when the plunger 1 moves to the right, when the grease flows in from the upper flow channel 111, the grease will push the first steel ball 34 to move upward and compress the first spring 33. In the process of the first steel ball 34 being pushed, the grease flows out through the channel on the first one-way valve seat 31 and enters various lubrication points in the lubrication system.

[0042] When the movement direction of the plunger 1 changes or the grease flows back, that is, moves to the left, the first spring 33 pushes the first steel ball 34 downward, sealing the grease channel inside the first one-way valve seat 31, ensuring that the grease can only flow in one direction and preventing the grease from flowing back in the system. The first grease removal component 3 realizes the one-way flow of the grease through the cooperation of the first steel ball 34 and the first spring 33, preventing the grease from flowing back in the system.

[0043] For further information, see Figure 1 and Figure 3As shown, the second grease discharge component 4 includes a second one-way valve seat 41, a second spring 42 and a second steel ball 43. The second one-way valve seat 41 is arranged on one side of the upper part of the upper flow channel 111. The second one-way valve seat 41 is provided with a second spring 42, and the second spring 42 is connected to the second steel ball 43. When the plunger 1 moves to the right, the grease in the accommodating chamber 21 is discharged through the first grease discharge component 3, and the grease pushes the second steel ball 43 to move upward and compresses the second spring 42. In the process of the second steel ball 43 being pushed, the grease flows out through the channel on the second one-way valve seat 41 and enters the left end cavity formed by the second grease discharge component 4 and the upper flow channel 111. When the movement direction of the plunger 1 changes to the left or the grease flows back, the second spring 42 pushes the second steel ball 43 downward to seal the channel of the second one-way valve seat 41, ensuring that the grease can only flow in one direction and preventing the grease from flowing back in the system, thereby ensuring that the grease supply is unidirectional.

[0044] For further examples, see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the third grease discharge component 5 includes a third one-way valve seat 51, a third spring 52 and a one-way valve core 53. The third one-way valve seat 51 is arranged on the lower flow channel 112. The third one-way valve seat 51 is provided with a third spring 52. The third spring 52 is provided with a one-way valve core 53. The one-way valve core 53 is slidably connected in the lower flow channel 112. When the plunger 1 moves away from the screw plug 11 and to the left, part of the grease accumulated between the second grease discharge component 4 and the left end cavity of the upper flow channel 111 is squeezed into the lower flow channel 112 due to pressure. The grease in the lower flow channel 112 flushes the one-way valve core 53 and moves to the right. The one-way valve core 53 no longer seals the grease discharge groove 113 on the lower flow channel 112. The grease discharge groove 113 on the flow channel 112 discharges part of the grease accumulated between the second grease discharge component 4 and the left end cavity of the upper flow channel 111 into the grease discharge groove 113, and the grease is introduced into the various grease discharge holes 22 below the pump body 2 in turn through the grease discharge groove 113, and is discharged from the various grease discharge holes 22 below the pump body 2 through pipes to various grease injection points on the bearing. When a lubrication point below is caused by the drying up and accumulation of grease in its interior or the deformation of its pipe, or the temperature difference in the working environment makes the viscosity of the grease too high, resulting in the liquid resistance of the point being greater than the set value, the excess grease accumulated in the lower grease discharge hole 22 will be stored in the spring accumulator 6 connected in parallel with the pipe of the lower grease discharge hole 22, so as to store the grease that failed to enter the lubrication point.

[0045] For further information, see Figure 1As shown, the spring accumulator 6 includes a spring mounting seat 61, in which an adsorption spring 62 is arranged, and the adsorption spring 62 is connected to a movable plunger 63. One end of the spring mounting seat 61 is connected to a grease discharge hole 22 through a pipeline. When a lubrication point in the lubrication system cannot enter due to a fluid resistance greater than a set value, the excess grease will enter the spring accumulator 6 through the grease discharge hole 22. The grease entering the spring accumulator will push the movable plunger 63 to move backward, compressing the adsorption spring 62 and storing the excess grease in the spring mounting seat 61. When a lubrication point in the system needs more grease due to a fluid resistance less than a set value, the grease stored in the spring accumulator 6 will re-enter the lubrication system through the grease discharge hole 22 under the push of the adsorption spring 62, and the adsorption spring 62 will push the movable plunger 63 forward to release the stored grease to replenish the grease required by the lubrication point.

[0046] For further information, see Figure 1 As shown, a storage chamber 611 is provided in the spring mounting seat 61, and the storage chamber 611 is located in the spring mounting seat 61 for storing grease. When a lubrication point in the lubrication system cannot enter due to a fluid resistance greater than a set value, the excess grease will enter the storage chamber 611 through the grease discharge hole 22. The grease entering the storage chamber 611 will push the movable plunger 63 to move backward, compress the adsorption spring 62, and store the excess grease in the storage chamber 611. When a lubrication point in the system needs more grease due to a fluid resistance less than a set value, the grease stored in the storage chamber 611 will re-enter the lubrication system through the grease discharge hole 22 under the push of the adsorption spring 62. The adsorption spring 62 will push the movable plunger 63 forward to release the grease stored in the storage chamber 611 to replenish the grease required by the lubrication point.

[0047] For further information, see Figure 1As shown, the grease replenishing assembly 7 includes a grease replenishing mounting seat 71, a grease replenishing one-way spring seat 72, a grease replenishing spring 73 and a grease replenishing steel ball 74. The grease replenishing mounting seat 71 is arranged above the accommodating chamber 21, and a grease replenishing one-way spring seat 72 is arranged in the grease replenishing mounting seat 71. A grease replenishing spring 73 is arranged on the grease replenishing one-way spring seat 72, and a grease replenishing steel ball 74 is connected to the grease replenishing spring 73. The grease replenishing steel ball 74 is movably connected to the grease replenishing one-way spring seat 72. When the grease in the accommodating chamber 21 is insufficient, negative pressure will be generated in the accommodating chamber 21. Under the action of the negative pressure, the grease replenishing steel ball 74 is attracted upward to compress the grease replenishing spring 73, open the grease replenishing channel, and the grease enters the accommodating chamber 21 through the grease replenishing mounting seat 71 to replenish the required grease. When the force returns to normal or exceeds the external pressure, the grease replenishing spring 73 will push the grease replenishing steel ball 74 downward, sealing the channel of the grease replenishing one-way spring seat 72, ensuring that the grease can only enter the accommodating chamber 21 from the outside and will not flow back, ensuring that the grease supply is one-way, and the grease replenishing component 7 can automatically replenish according to the amount of grease in the accommodating chamber 21, ensuring that the system can continue to obtain the required grease during operation, and through the cooperation of the grease replenishing one-way spring seat 72 and the grease replenishing steel ball 74, the grease can flow in one direction, prevent the grease from flowing back, and ensure the reliability of the grease supply. The grease replenishing spring 73 and the grease replenishing steel ball 74 work together to respond to the pressure changes in the accommodating chamber 21, automatically adjust the inflow of grease, and maintain the stable operation of the system.

[0048] For further information, see Figure 1 As shown, an exhaust groove 114 is further provided under the plunger 1. Specifically, the exhaust groove 114 is an annular groove of a certain width arranged on the outside of the plunger 1. An exhaust component 8 matching the exhaust groove 114 is provided on the pump body 2. A diluent is stored inside the exhaust component 8 for sealing the exhaust groove 114 in the initial stage. When the plunger 1 moves left and right in the pump body 2, the exhaust component 8 no longer seals the entire exhaust groove 114. The exhaust groove 114 guides the air inside the system to the exhaust component 8. The exhaust component 8 works with the exhaust groove 114 to exhaust the air inside the system to ensure that the grease can flow smoothly.

[0049] For further information, see Figure 1As shown, the exhaust component 8 includes an exhaust joint seat 81, an exhaust spring 82 and an exhaust steel ball 83. The exhaust joint seat 81 is arranged on the pump body 2, and an exhaust spring 82 is arranged in the exhaust joint seat 81. One end of the exhaust spring 82 is connected to the exhaust steel ball 83, and the exhaust steel ball 83 is slidably connected in the exhaust joint seat 81. One end of the exhaust joint seat 81 is connected to the exhaust groove 114 through a pipeline. The air generated between the pump body 2 and the plunger 1 will be guided to the exhaust component 8 through the exhaust groove 114. In the exhaust component 8, the air will push the exhaust steel ball 83 and compress the exhaust spring 82, thereby opening the exhaust channel in the exhaust joint seat 81. The air is discharged from the system through the exhaust channel in the exhaust joint seat 81 to ensure that the grease can flow smoothly. When the air inside the system is discharged, the exhaust spring 82 will push the exhaust steel ball 83 back to its original position and close the exhaust channel, ensuring that the grease will not be lost through the exhaust channel lintel in the exhaust joint seat 81, and only air is allowed to be discharged.

[0050] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. An automatic lubrication unit for bidirectional progressive grease injection, comprising a plunger (1), wherein the plunger (1) is movably connected to a pump body (2), and characterized in that: A screw plug (11) is provided on one side of the plunger (1), a receiving cavity (21) is provided between the plunger (1) and the screw plug (11), and a plurality of grease discharge holes (22) are provided on the upper and lower sides of the pump body (2); An upper flow channel (111) and a lower flow channel (112) are respectively provided on the upper and lower sides of the plunger (1), the upper flow channel (111) and the lower flow channel (112) are in communication with the accommodating chamber (21), the upper flow channel (111) is connected with the lower flow channel (112), a first fat discharge component (3) is provided inside the upper flow channel (111), a second fat discharge component (4) is provided on one side of the first fat discharge component (3), a third fat discharge component (5) is provided inside the lower flow channel (112), a plurality of fat discharge holes (22) are respectively connected to the upper flow channel (111) and the lower flow channel (112) through the fat discharge groove (113), and the plurality of fat discharge holes (22) are all connected in parallel with a spring energy accumulator (6) through a pipeline; The upper part of the accommodating chamber (21) is connected to a grease replenishing component (7) via a pipeline.

2. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: The first fat removal component (3) comprises a first one-way valve seat (31), a first spring seat (32), a first spring (33) and a first steel ball (34); the first one-way valve seat (31) is arranged in the upper flow channel (111); the first one-way valve seat (31) is provided with a first spring seat (32); the first spring seat (32) is provided with a first spring (33); the first spring (33) is connected to a first steel ball (34); the first steel ball (34) is movably connected in the first spring seat (32).

3. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: The second fat removal component (4) comprises a second one-way valve seat (41), a second spring (42) and a second steel ball (43); the second one-way valve seat (41) is arranged on one side of the upper part of the upper flow channel (111); the second one-way valve seat (41) is provided with a second spring (42); and the second spring (42) is connected to the second steel ball (43).

4. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: The third fat discharge component (5) comprises a third one-way valve seat (51), a third spring (52) and a one-way valve core (53); the third one-way valve seat (51) is arranged on the lower flow channel (112); a third spring (52) is arranged inside the third one-way valve seat (51); a one-way valve core (53) is arranged on the third spring (52); and the one-way valve core (53) is slidably connected in the lower flow channel (112).

5. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: The spring energy accumulator (6) comprises a spring mounting seat (61), an adsorption spring (62) is arranged inside the spring mounting seat (61), the adsorption spring (62) is connected to a movable plunger (63), and one end of the spring mounting seat (61) is connected to a grease discharge hole (22) via a pipeline.

6. The automatic lubrication unit for bidirectional progressive grease injection according to claim 5, characterized in that: A storage cavity (611) is provided in the spring mounting seat (61).

7. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: The grease replenishing component (7) comprises a grease replenishing mounting seat (71), a grease replenishing one-way spring seat (72), a grease replenishing spring (73) and a grease replenishing steel ball (74); the grease replenishing mounting seat (71) is arranged above the accommodating cavity (21); a grease replenishing one-way spring seat (72) is arranged in the grease replenishing mounting seat (71); a grease replenishing spring (73) is arranged on the grease replenishing one-way spring seat (72); a grease replenishing steel ball (74) is connected to the grease replenishing spring (73); and the grease replenishing steel ball (74) is movably connected in the grease replenishing one-way spring seat (72).

8. The automatic lubrication unit for bidirectional progressive grease injection according to claim 1, characterized in that: An exhaust groove (114) is also provided below the plunger (1), and an exhaust assembly (8) matching the exhaust groove (114) is provided on the pump body (2).

9. An automatic lubrication unit for bidirectional progressive grease injection according to claim 8, characterized in that: The exhaust assembly (8) comprises an exhaust joint seat (81), an exhaust spring (82) and an exhaust steel ball (83); the exhaust joint seat (81) is arranged on the pump body (2); an exhaust spring (82) is arranged inside the exhaust joint seat (81); one end of the exhaust spring (82) is connected to the exhaust steel ball (83); the exhaust steel ball (83) is slidably connected inside the exhaust joint seat (81); one end of the exhaust joint seat (81) is connected to the exhaust groove (114) through a pipeline.

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