Waste fat collection box, collection system, fat changing system and waste fat collection box cleaning method

Abstract

The present invention relates to a waste grease collection box, a collection system, a grease changing system and a waste grease collection box cleaning method, which can reduce the gas content in the waste grease, reduce the volume of the waste grease collection container and facilitate the cleaning of the waste grease. The box comprises a box body, a grease inlet and outlet are provided on the box body, a cavity for accommodating the waste grease is provided in the box body, at least one exhaust pipe is provided in the cavity, a plurality of small holes for exhausting and discharging the base oil separated from the waste grease are provided on the exhaust pipe, the exhaust pipe is connected to the external atmosphere through an exhaust channel provided on the box body, the exhaust pipe is also connected to the cavity through small holes, an oil collecting chamber is provided on the exhaust channel to collect the base oil flowing out of the exhaust pipe, the oil collecting chamber is divided into an air chamber and an oil chamber, the exhaust pipe is connected to the air chamber, and an air outlet is provided on the air chamber for discharging the air in the oil collecting chamber, after the waste grease enters the cavity from the grease inlet, the air in the cavity and the base oil in the separated state are discharged into the exhaust pipe from the small holes, after the base oil and air are passed into the air chamber from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the air outlet.

Description

Technical Field

[0001] The invention relates to a waste fat collection box, a collection system, a fat changing system and a waste fat collection box cleaning method. Background Art

[0002] In the wind power industry, in order to ensure the good operation of the variable pitch bearings of the wind turbine, it is necessary to regularly add grease to the variable pitch bearings. After a period of use, the abrasive particles generated by the friction in the bearings increase, and the grease in the bearings becomes waste grease. If it is not cleaned in time, it will affect the service life of the bearings, and even cause safety accidents in serious cases.

[0003] In this regard, at present, a waste grease collection system is installed on the bearings of the wind power industry to collect the waste grease. The waste grease collection system generally includes a grease suction and discharge device installed on the grease discharge port of the bearing. Each grease suction and discharge device is connected to a waste grease collection bottle or a waste grease collection bag for storing the waste grease collected from the grease suction and discharge device. Due to the limitation of space and installation structure, the waste grease collection bottle and the waste grease collection bag are limited in size and need to be replaced frequently. However, since there are many grease discharge ports on the fan and many grease suction and discharge devices are installed, it is more difficult to install or replace the waste grease collection bottle, especially in the fan. The replacement operation is not only time-consuming but also very laborious. On the other hand, the waste grease collection bottle and the waste grease collection bag are very difficult to clean due to size limitations. In the existing method, the waste grease collection bottle or bag is generally not cleaned after being removed, but directly stacked, resulting in problems of space occupation and environmental pollution. The waste grease collection bottle and bag are no longer reused, resulting in a large amount of material waste. The problem of handling the waste grease after collection has become a difficult problem in the industry.

[0004] There are also attempts on the market to pass the waste grease sucked out by multiple grease suction and discharge devices into a large box or a large bag. However, since the waste grease contains a large amount of air when the grease suction and discharge device sucks out the waste grease, the ratio of waste grease to gas is not less than 1:1, and may even reach 1:5. That is, for every unit of waste grease collected, 5 units of gas will be collected at the same time, and most of the 5 units of gas are wrapped in the waste grease, occupying a large volume. In order to meet the purpose of replacing the waste grease collection container with a fan at least once every six months, the waste grease collection container needs to be very large, which leads to a series of problems such as large space occupation, difficulty in layout, and difficulty in replacement and cleaning.

[0005] Therefore, the key to the problem is how to effectively collect waste grease, reduce the air content in the waste grease, reduce the volume of the waste grease collection container, and facilitate the cleaning of the waste grease. Summary of the invention

[0006] The object of the present invention is to provide a waste fat collection box which can reduce the air content in the waste fat, reduce the volume of the waste fat collection container, and facilitate the cleaning of the waste fat; the object of the present invention is also to provide a waste fat collection system using the above waste fat collection box; the object of the present invention is also to provide an automatic fat changing system using the above waste fat collection box; the object of the present invention is also to provide a waste fat collection box cleaning method for cleaning the above waste fat collection box.

[0007] The waste fat collection box of the present invention adopts the following technical solution:

[0008] The waste grease collection box includes a box body, which is provided with a grease inlet and a grease outlet. The box body has a cavity for accommodating waste grease, and at least one exhaust pipe is provided in the cavity. Each exhaust pipe is provided with a plurality of small holes for exhausting air and discharging the base oil separated from the waste grease. The exhaust pipe is connected to the external atmosphere through an exhaust channel provided on the box body, and the exhaust pipe is also connected to the cavity through small holes. An oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe. The oil collecting chamber is divided into an air chamber and an oil chamber. The exhaust pipe passes into the air chamber, and an outlet is also provided on the air chamber for discharging the air in the oil collecting chamber. After the waste grease enters the cavity from the grease inlet, the air in the cavity and the separated base oil are discharged into the exhaust pipe from the small holes. After the base oil and air pass into the air cavity from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the outlet.

[0009] Furthermore, the box body is a cylindrical shell structure, and the cavity of the box body is a uniform cross-section structure along the axial direction.

[0010] On the basis of the previous scheme, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is slidingly sleeved on the exhaust pipe, and the outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

[0011] On the basis of the above two solutions, the box body includes a cylinder in the middle and cover plates located at both ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on both ends of the cylinder.

[0012] When the box body is a cylindrical shell structure or has a piston, openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

[0013] In addition, the box body is cylindrical, and the oil collecting chamber is an annular chamber.

[0014] Based on the first solution, the waste grease collection box includes a detection module for detecting the amount of waste grease in the box, and the detection module can detect the liquid level of the waste grease in the box. The detection module can be set to detect how much waste grease is collected in the box, so as to monitor the balance of the grease in the bearing.

[0015] On the basis of the previous scheme, the box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-section structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body. Since the piston is pushed and moved by the collected waste fat, most of the gas in the waste fat is also discharged. Therefore, when the cross section of the box body is straight and linear (uniform cross section or linearly changing cross section, such as a cone), knowing the position of the piston can know the amount of waste fat collected in the box body.

[0016] Based on the previous solution, the detection module includes a linear distance sensor installed on the piston or on the end of the box away from the grease inlet. The position of the piston in the box is detected by the linear distance sensor. The displacement of the piston corresponds to the change in the electrical signal of the linear distance sensor, so that the piston position can be detected non-contact and accurately, and then the amount of waste grease in the box can be calculated.

[0017] On the premise that the box body is a cylindrical shell structure with equal cross-section and has a piston, part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is set along the moving direction of the piston. The box body is partially or completely transparent to facilitate viewing the position of the piston, and the purpose of setting the scale is to facilitate intuitive reading of the amount of waste fat collected corresponding to the position of the piston.

[0018] In addition, a travel switch is provided on the end of the box body away from the grease inlet to stop pumping waste grease into the box body and sound an alarm when the waste grease in the box body is full. The travel switch is mainly set to play a safety protection role, so that the waste grease collection box will not be damaged by excessive waste grease pumping into it, and it also prevents waste grease from flowing out and polluting the environment.

[0019] In addition, a spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

[0020] Alternatively, openings are respectively provided at both ends of the box body, and covers are provided outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The space enclosed by the two covers and the two ends of the box body constitutes the oil collecting chamber.

[0021] The waste fat collection system of the present invention adopts the following technical solution:

[0022] The waste grease collection system includes at least one grease suction and discharge device for installation on the grease discharge port of the bearing, and also includes a waste grease collection box. The waste grease collection box includes a box body, the box body is provided with a grease inlet and a grease outlet, the waste grease outlet of each grease suction and discharge device is connected to the grease inlet through a grease discharge pipe, a cavity is provided in the box body for accommodating the waste grease, at least one exhaust pipe is provided in the cavity, each exhaust pipe is provided with a plurality of small holes for exhausting and discharging base oil separated from the waste grease, the exhaust pipe is connected to the external atmosphere through an exhaust channel provided on the box body, the exhaust pipe is also connected to the cavity through the small holes, an oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe, the oil collecting chamber is divided into an air chamber and an oil chamber, the exhaust pipe is connected to the air chamber, and an air outlet is also provided on the air chamber for discharging air in the oil collecting chamber, after the waste grease enters the cavity from the grease inlet, the air in the cavity and the base oil in a separated state are discharged into the exhaust pipe from the small holes, after the base oil and air are passed into the air cavity from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the air outlet.

[0023] Furthermore, the box body is a cylindrical shell structure, and the cavity of the box body is a uniform cross-section structure along the axial direction.

[0024] On the basis of the previous scheme, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is slidingly sleeved on the exhaust pipe, and the outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

[0025] On the basis of the above two solutions, the box body includes a cylinder in the middle and cover plates located at both ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on both ends of the cylinder.

[0026] When the box body is a cylindrical shell structure or has a piston, openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

[0027] In addition, the box body is cylindrical, and the oil collecting chamber is an annular chamber.

[0028] Based on the first solution, the waste grease collection box includes a detection module for detecting the amount of waste grease in the box, and the detection module can detect the liquid level of the waste grease in the box. The detection module can be set to detect how much waste grease is collected in the box, so as to monitor the balance of the grease in the bearing.

[0029] On the basis of the previous scheme, the box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-section structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body. Since the piston is pushed and moved by the collected waste fat, most of the gas in the waste fat is also discharged. Therefore, when the cross section of the box body is straight and linear (uniform cross section or linearly changing cross section, such as a cone), knowing the position of the piston can know the amount of waste fat collected in the box body.

[0030] Based on the previous solution, the detection module includes a linear distance sensor installed on the piston or on the end of the box away from the grease inlet. The position of the piston in the box is detected by the linear distance sensor. The displacement of the piston corresponds to the change in the electrical signal of the linear distance sensor, so that the piston position can be detected non-contact and accurately, and then the amount of waste grease in the box can be calculated.

[0031] On the premise that the box body is a cylindrical shell structure with equal cross-section and has a piston, part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is set along the moving direction of the piston. The box body is partially or completely transparent to facilitate viewing the position of the piston, and the purpose of setting the scale is to facilitate intuitive reading of the amount of waste fat collected corresponding to the position of the piston.

[0032] In addition, a travel switch is provided on the end of the box body away from the grease inlet, and the waste grease collection box includes a control module, which is electrically connected to the travel switch to control the grease suction and discharge device to stop and alarm when the waste grease in the box body is full. The travel switch is mainly set to play a safety protection role, so that the waste grease collection box will not be damaged by excessive waste grease, and it also prevents the waste grease from flowing out and polluting the environment.

[0033] In addition, a spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

[0034] Alternatively, openings are respectively provided at both ends of the box body, and covers are provided outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The space enclosed by the two covers and the two ends of the box body constitutes the oil collecting chamber.

[0035] The automatic grease changing system of the present invention adopts the following technical scheme:

[0036] The automatic grease replacement system includes a centralized lubrication system and a waste grease collection system. The waste grease collection system includes at least one grease suction and discharge device installed on the grease discharge port of the bearing. The waste grease collection system also includes a waste grease collection box. The waste grease collection box includes a box body, and the box body is provided with a grease inlet and a grease outlet. The waste grease outlet of each grease suction and discharge device is connected to the grease inlet through a grease discharge pipe. The box body is provided with a cavity for accommodating waste grease, and at least one exhaust pipe is provided in the cavity. Each exhaust pipe is provided with a plurality of small holes for exhausting air and discharging base oil separated from the waste grease. The exhaust pipe is connected to the external atmosphere through an exhaust channel arranged on the box body. The exhaust pipe is also connected to the cavity through a small hole. An oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe. The oil collecting chamber is divided into an air chamber and an oil chamber. The exhaust pipe passes into the air chamber. The air cavity is also provided with an outlet for discharging the air in the oil collecting chamber. After the waste grease enters the cavity from the grease inlet, the air in the cavity and the base oil in a separated state are discharged into the exhaust pipe from the small hole. After the base oil and air pass into the air cavity from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the outlet.

[0037] Furthermore, the box body is a cylindrical shell structure, and the cavity of the box body is a uniform cross-section structure along the axial direction.

[0038] On the basis of the previous scheme, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is slidingly sleeved on the exhaust pipe, and the outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

[0039] On the basis of the above two solutions, the box body includes a cylinder in the middle and cover plates located at both ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on both ends of the cylinder.

[0040] When the box body is a cylindrical shell structure or has a piston, openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

[0041] In addition, the box body is cylindrical, and the oil collecting chamber is an annular chamber.

[0042] Based on the first solution, the waste grease collection box includes a detection module for detecting the amount of waste grease in the box, and the detection module can detect the liquid level of the waste grease in the box. The detection module can be set to detect how much waste grease is collected in the box, so as to monitor the balance of the grease in the bearing.

[0043] On the basis of the previous scheme, the box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-section structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body. Since the piston is pushed and moved by the collected waste fat, most of the gas in the waste fat is also discharged. Therefore, when the cross section of the box body is straight and linear (uniform cross section or linearly changing cross section, such as a cone), knowing the position of the piston can know the amount of waste fat collected in the box body.

[0044] Based on the previous solution, the detection module includes a linear distance sensor installed on the piston or on the end of the box away from the grease inlet. The position of the piston in the box is detected by the linear distance sensor. The displacement of the piston corresponds to the change in the electrical signal of the linear distance sensor, so that the piston position can be detected non-contact and accurately, and then the amount of waste grease in the box can be calculated.

[0045] On the premise that the box body is a cylindrical shell structure with equal cross-section and has a piston, part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is set along the moving direction of the piston. The box body is partially or completely transparent to facilitate viewing the position of the piston, and the purpose of setting the scale is to facilitate intuitive reading of the amount of waste fat collected corresponding to the position of the piston.

[0046] In addition, a travel switch is provided on the end of the box body away from the grease inlet, and the waste grease collection box includes a control module, which is electrically connected to the travel switch to control the grease suction and discharge device to stop and alarm when the waste grease in the box body is full. The travel switch is mainly set to play a safety protection role, so that the waste grease collection box will not be damaged by excessive waste grease, and it also prevents the waste grease from flowing out and polluting the environment.

[0047] In addition, a spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

[0048] Alternatively, openings are respectively provided at both ends of the box body, and covers are provided outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The space enclosed by the two covers and the two ends of the box body constitutes the oil collecting chamber.

[0049] The waste fat collection box cleaning method of the present invention adopts the following technical solution:

[0050] The waste grease collection box cleaning method includes the following steps:

[0051] S10, opening the box after collecting the waste fat, and taking out the waste fat in the cavity;

[0052] S20, discharging the base oil collected in the oil collecting chamber from the air outlet on the oil collecting chamber;

[0053] S30, inflate the exhaust pipe through the air source to blow the base oil and a small amount of waste grease in the exhaust pipe into the cavity of the box through the small holes.

[0054] Furthermore, when cleaning the waste grease, the sealing plugs at both ends of the box body are removed, and the piston in the box body is pushed from an opening at one end to discharge the waste grease in the box body from an opening at the other end.

[0055] Furthermore, before cleaning the waste grease, the box body after collecting the waste grease is removed from its installation location, and the piston is pushed to move by the squeezing device.

[0056] Alternatively, keep the box at its installation location, remove the grease discharge pipe connected to the grease inlet of the box, and use the lever mechanism to push the piston from the end of the box away from the grease inlet to squeeze out the waste grease in the box from the grease inlet. This method does not require the box to be removed, and the waste grease can be squeezed out directly at the installation location, which saves time and effort and is more practical.

[0057] Furthermore, before squeezing out the waste fat, a waste fat collection bag or waste fat collection bucket is set at one end of the fat inlet of the box to receive the extruded waste fat. The advantage of using a waste fat collection bag is that it is easy to carry, such as a practical plastic bag, which is easy to carry when climbing the fan; the waste fat collection bucket does not need to be fixed or supported by people, and can be directly placed under the fat inlet, which is more convenient to operate.

[0058] The beneficial effects of the present invention are as follows: when the present invention is in use, multiple grease suction and discharge devices installed on a variable pitch bearing can be connected to the waste grease collection box through the grease discharge pipe, and all the grease suction and discharge devices on the three variable pitch bearings can also be connected to the waste grease collection box through the grease discharge pipe. The grease suction and discharge devices suck out the waste grease corresponding to each part of the bearing and introduce it into the waste grease collection box. After the waste grease enters the box from the grease inlet, the volume of the air in the box is gradually occupied by the waste grease, and the air and a small amount of base oil separated from the waste grease flow to the oil collecting chamber through the small holes in the exhaust pipe. The oil collecting chamber is divided into an upper air chamber and a lower oil chamber, and the oil and gas are separated here, and the gas is discharged to the outside of the box along the air outlet, and the base oil remains in the oil collecting chamber. When the waste grease contacts the small holes in the exhaust pipe, the waste grease will not enter the exhaust pipe due to the viscosity of the waste grease and the size limitations of the small holes and the inner diameters of the exhaust pipe. When the waste grease collection box is filled with waste grease, the box can be removed and the waste grease in the box can be cleaned before continuing to be used. It can be seen that the device can realize the unified collection of waste grease from multiple grease suction and discharge devices of multiple same bearings or multiple nearby bearings, and the air in the waste grease and the box can be discharged when collecting the waste grease. The space utilization rate of the box is very high and the difficulty in handling caused by gas entrapped in the waste grease is avoided. By adopting the method of centralized collection and centralized treatment, maintenance personnel do not need to frequently disassemble and replace the waste grease collection container on site, and only need one operation to complete it. The time saving and efficiency improvement here are of great significance for the operation on the fan. Since the box can be reused after cleaning, and the cleaning is more convenient than the traditional waste grease collection bottle, it can be completed in one cleaning. There is no need to clean multiple small waste grease collection bottles many times, which further improves the cleaning efficiency and avoids the waste of materials, environmental pollution and space occupation caused by large-scale stacking. The cleaned waste grease can be stored in a large container for subsequent centralized treatment.

[0059] Furthermore, the box body is provided with a uniform cross-section and a piston, so that waste grease in the box body can be easily cleaned out through the piston, thereby further improving the cleaning efficiency and making the cleaning process cleaner and tidier.

[0060] Furthermore, openings and sealing plugs are provided at both ends, so that the piston can be pushed directly from one end toward the other end by an extrusion device, thereby achieving the cleaning of waste grease, with a higher degree of automation and more convenient cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is the appearance diagram of the waste fat collection box of the present invention;

[0062] Figure 2 It is a longitudinal section view of the waste fat collection box;

[0063] Figure 3 A three-dimensional diagram of the waste fat collection box of the present invention (after removing the cylinder);

[0064] Figure 4 A half-section view of the joint between the inner cover plate and the outer cover plate;

[0065] Figure 5 is a three-dimensional diagram of the inner cover;

[0066] Figure 6 is a three-dimensional diagram of the outer cover;

[0067] Figure 7 A system principle diagram of an embodiment of the waste fat collection system of the present invention;

[0068] Figure 8 A system schematic diagram of a first embodiment of an automatic grease changing system;

[0069] Fig. 9 A system schematic diagram of a second embodiment of an automatic grease changing system;

[0070] Fig.10 A system schematic diagram of a third embodiment of an automatic grease changing system;

[0071] Fig.11 is a schematic diagram of a second embodiment of a waste fat collection system;

[0072] Fig.12 A cross-sectional view of a second embodiment of a waste fat collection box;

[0073] Fig.13 is a schematic diagram of a third embodiment of a waste fat collection system;

[0074] Fig.14 A three-dimensional diagram of another embodiment of a waste fat collection box;

[0075] Fig.15 for Fig.14 A longitudinal section view of

[0076] In the figure: 1-grease pump, 11-hydraulic pump, 2-distributor, 3-grease suction and discharge device, 4-pipeline, 5-waste grease collection box, 51-mounting plate, 52-connecting column, 53-cylinder, 54-inner cover plate, 55-outer cover plate, 551-sealing cap, 56-threaded plug, 561-grease inlet / outlet, 57-exhaust pipe, 571-small hole, 58-oil collecting chamber, 581-exhaust pipe, 59-piston, 591-sealing ring, 61-connecting bolt, 62-screw plug, 63-nut, 7-opening, 8-reversing valve; 9-hose, 91-grease outlet. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail 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 invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0078] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0079] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0080] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0081] An embodiment of the waste fat collection system of the present invention: Figure 7 The figure shows the principle diagram of the waste grease collection system. Taking the fan pitch bearing as an example, the main components of the waste grease collection system are the grease suction and discharge device 3 and the drive device. Figure 7The dual oil circuit control drives multiple grease suction and discharge devices 3 to work. The grease suction and discharge devices 3 are installed at each grease discharge hole of the variable pitch bearing, that is, multiple grease suction and discharge devices 3 are arranged around each variable pitch bearing. In other embodiments, electric grease suction and discharge devices 3 can also be used. Each grease suction and discharge device 3 of the electric grease suction and discharge device 3 has an independent motor as a power source and is compact. The waste grease collection box 5 can be detachably installed on the wheel hub. The grease outlet of each grease suction and discharge device 3 is connected to the grease inlet 561 of the waste grease collection box 5 through a grease discharge pipe. Alternatively, the grease discharge pipe of each grease suction and discharge device 3 can be connected to a main pipeline first, and the main pipeline is connected to the waste grease collection box 5. The waste grease sucked out by each grease suction and discharge device 3 can be uniformly discharged into the waste grease collection box 5. Among them, the places marked A and B are two medium conversion cylinders. The rod cavity and the left area of ​​the cylinder are grease, and the right side of the cylinder is hydraulic oil. The advantage of this solution is that the original lubrication pump of the lubrication system can be used as a power source, saving the cost of developing a hydraulic pump; more preferably, as Fig.13 As shown, the medium conversion cylinder can be removed, and the corresponding grease pump 1 can be replaced by a hydraulic pump (power pump) 11, and the suction and discharge action of the grease suction and discharge device 3 can be directly controlled through the hydraulic oil double oil circuit, and the sucked waste grease can be introduced into the waste grease collection box 5. In other embodiments, such as Figure 8-10 As shown, the medium conversion cylinder (piston cylinder) in the figure can be removed.

[0082] like Figure 1-4 Any one of the items shows the structure of the waste fat collection box 5, which includes a box body, which includes a cylinder 53 in the middle and cover plates located at both ends of the cylinder 53. The cylinder 53 is made of a transparent material to facilitate viewing of the waste fat inside. The two cover plates are connected by a connecting column 52 and sealed and pressed on both ends of the cylinder 53. The cover plates include an inner cover plate 54 and an outer cover plate 55. Figure 5 The structure of the inner cover plate 54 is shown. The inner cover plate 54 is a circular plate structure. An opening 7 is provided in the middle of the inner cover plate 54. An annular groove is provided on the inner side of the inner cover plate 54 to facilitate the insertion of the cylinder 53. Two sealing rings 591 are embedded on the outer side of the inner cover plate 54. A plurality of light holes are provided around the inner cover plate 54 for the connection column 52 to pass through. Light holes for the exhaust pipes 57 to pass through are also provided on the inner cover plate 54 corresponding to each exhaust pipe 57. Bolt holes for connecting with the outer cover plate 55 are also provided on the inner cover plate 54. Figure 6 The figure shows a three-dimensional view of the outer cover plate 55, which is in the shape of a disk as a whole, and has an outer diameter smaller than the diameter of the inner cover plate 54. An annular groove is provided on the inner side of the outer cover plate 55, and the annular groove and the inner cover plate 54 are connected to form an annular cavity, which is the oil collecting cavity 58. An air outlet pipe 581 is also fixed in the groove, and the air outlet pipe 581 connects the groove with the outer side of the outer cover plate 55. The outer cover plate 55 is provided with an opening 7 corresponding to the corresponding inner cover plate 54. The outer cover plate 55 is also provided with two rows of bolt holes for connecting with the inner cover plate 54.

[0083] like Figure 1-3 As shown, the box body is cylindrical as a whole, and the cylinder 53 is sandwiched between the two inner cover plates 54 and is located in the annular groove of the inner cover plate 54. The two inner cover plates 54 are connected by a plurality of connecting columns 52. The connecting columns 52 have threads at both ends or a nut at one end. The two inner cover plates 54 are clamped by screwing the nuts 63 on the connecting columns 52. The outer covers 55 are connected to the outer sides of the two inner cover plates 54 by bolts. The outer covers 55 and the corresponding inner cover plates 54 are spliced ​​to form an annular oil collecting chamber 58. The oil collecting chamber 58 is located between the two sealing rings 591 on the outer side of the inner cover plate 54. The light holes corresponding to the exhaust pipes 57 on the inner cover plate 54 pass into the oil collecting chamber 58. The two ends of the multiple exhaust pipes 57 with multiple small holes 571 evenly distributed on the upper part are respectively inserted into the oil collecting chamber 58. The exhaust pipes 57 extend along the axial direction of the box body, and the exhaust pipes 57 are rigid pipes. The exhaust pipe 57 is located in the middle of the cross section of the oil collecting chamber 58. A piston 59 is movably mounted on the exhaust pipe 57. The exhaust pipe 57 and the piston 59 are tightly fitted, which ensures that the exhaust pipe 57 and the piston 59 can slide and have a certain sealing effect. The outer peripheral surface of the piston 59 is slidably fitted with the cavity wall of the cavity. One way is to install a sealing ring 591 on the outer peripheral surface of the piston 59, and the outer peripheral surface of the piston 59 is slidably and sealedly fitted with the cavity wall of the cavity.

[0084] Openings 7 are respectively provided on the covers on both ends of the box, that is, on both sides of the box, and threaded plugs 56 are removably provided at the openings 7. The threaded plug 56 is provided with a grease inlet 561 and a grease outlet, and the box has a cavity for accommodating waste grease. As for the exhaust pipe 57, each exhaust pipe 57 is provided with a plurality of small holes 571 for exhausting air and discharging the base oil separated from the waste grease. The size of the small hole 571 is relatively small, generally with a diameter of 1-1.5 mm. Of course, for waste grease of different viscosities, the diameter of the small hole can also be adaptively adjusted, so as to achieve the purpose of allowing only base oil and gas to enter, while waste grease cannot enter. Since the viscosity of the grease is relatively high and the size of the small hole 571 is relatively small, only air and base oil can pass through, and waste grease cannot pass through, that is, it has a certain grease-gas separation effect. The exhaust pipe 57 is connected to the external atmosphere through an exhaust channel arranged on the box body. The exhaust pipe 57 is also connected to the cavity through a small hole 571. An oil collecting chamber 58 is provided on the exhaust channel to collect the base oil flowing out of the exhaust pipe 57. The oil collecting chamber 58 is divided into an air chamber and an oil chamber. The exhaust pipe 57 passes into the air chamber. The air chamber is also provided with an outlet for discharging the air in the oil collecting chamber 58. After the waste grease enters the cavity from the grease inlet 561, the air in the cavity and the base oil in the separated state are discharged into the exhaust pipe 57 from the small hole 571. After the base oil and air pass into the air cavity from the exhaust pipe 57, the base oil enters the oil chamber and the air is discharged from the outlet.

[0085] When the waste grease collection box is used in a waste grease collection system or an automatic grease replacement system, a travel switch (i.e., a limit switch or position switch) is provided at one end of the box away from the grease inlet. When the piston is pushed by the waste grease to contact the travel switch, the travel switch is triggered, indicating that the waste grease in the waste grease collection box is full and the box needs to be replaced. The system cannot continue to operate before the box is replaced. If it continues to operate, the excess waste grease cannot continue to enter the box, which will cause problems such as pressure holding or waste grease leakage. Therefore, a travel switch or other types of proximity switches, such as an infrared switch, are provided. When the switch is triggered, a feedback signal is sent to the control module of the system, such as a monitor. The control module controls the system to shut down by sending a command. If it is a waste grease collection system, the corresponding power pump is controlled to shut down. If it is an automatic grease replacement system, the corresponding power pump and grease injection pump or the corresponding grease injection pump is controlled to shut down. While controlling the shutdown, an alarm command can also be sent to remind the background maintenance personnel in a conspicuous manner, such as an audible and visual alarm. The maintenance personnel can replace the waste grease collection box in time and restart the system to continue normal use.

[0086] In order to facilitate the installation of the waste fat collection box 5, mounting plates 51 are respectively provided at both ends of the box body. The mounting plates 51 are L-shaped and are mounted on the inner cover plates 54 at both ends by bolts.

[0087] like Figure 2 As shown, in this embodiment, an infrared distance sensor or other linear distance sensor (not shown in the figure) is also provided on the box body. Figure 2 The inner cover plate at the middle right end faces the left to detect the position of the piston 59. After the position of the piston 59 is detected, that is, the distance between the piston 59 and the right end, the total length of the inner cavity of the box body minus the distance between the piston 59 and the right end can be used, and then multiplied by the difference between the cross-sectional area of ​​the inner cavity of the oil tank and the area corresponding to the outer diameters of the multiple exhaust pipes. The volume of the waste grease in the cavity on the left side of the piston 59 can be obtained, and the volume of the collected waste grease can be obtained. Under the premise of knowing the new grease injected into the bearing, in order to achieve the dynamic balance of the bearing, the working frequency and working time of the grease suction and discharge device can be adjusted, or the working frequency and working time of the grease pump can be adjusted to adjust the amount of waste grease injected into the bearing.

[0088] In addition, in this embodiment, in order to prevent the fat suction and discharge device from sucking too much waste fat into the box body and causing the box body to open or cause the seal to be damaged, etc., Figure 2 A travel switch is installed on the inner cover plate 54 at the right end of the middle box. When the waste grease pushes the piston 59 to move to contact the travel switch, the controller controls the grease suction and discharge device to stop the suction action, and at the same time reminds the background monitoring personnel or sound and light alarms so that the empty box can be replaced in time.

[0089] In other embodiments, in order to facilitate the viewing or on-site reading of the amount of waste fat collected in the waste fat collection box, a scale can be set on the outside of the box, and the scale unit is a volume unit. Correspondingly, the box needs to be set to a transparent or translucent material to facilitate the naked eye to view the position of the piston.

[0090] When in use: install the waste grease collection box 5 on the wheel hub of the fan, guide the grease outlet of each grease suction and discharge device 3 into the grease inlet 561 of the waste grease collection box 5 through the grease discharge pipe, open the threaded plug 56 at the other end, push the piston 59 to the end close to the grease inlet 561 through the opening 7, and then screw on the threaded plug 56. When the grease suction and discharge device 3 is working, the waste grease in the variable pitch bearing is sucked into the grease discharge pipe and enters the waste grease collection box 5 from the grease inlet 561 at one end of the waste grease collection box 5 along the pipe, and the waste grease pushes the piston 59 toward the end away from the grease inlet 561. The piston 59 moves sideways, and the air in the box body is compressed when it moves. The air enters the exhaust pipe 57 along the small hole 571 of the exhaust pipe 57. At the same time, the base oil separated from the waste grease enters the exhaust pipe 57, and enters the oil collecting chamber 58 at one end or both ends along the exhaust pipe 57. Then, the oil and gas are separated in the oil collecting chamber 58, and the gas flows along the oil collecting chamber 58 and is discharged along the air outlet pipe 581. The base oil remains in the oil collecting chamber 58. When the piston 59 moves to the end, the waste grease collection process is completed. After the collection is completed, the waste grease collection box 5 needs to be replaced and cleaned.

[0091] The cleaning process is as follows: first, remove the waste grease collection box 5 from its installation location, open the box body after collecting the waste grease, and take out the waste grease in the cavity; discharge the base oil collected in the oil collecting chamber 58 from the air outlet on the oil collecting chamber 58; inflate the exhaust pipe 57 through the air source to blow the base oil and a small amount of waste grease in the exhaust pipe 57 into the cavity of the box body through the small hole 571.

[0092] More specifically: first, remove the waste grease collection box 5 from its installation location, unscrew the screw plugs 62 on the outer cover plates 55 at both ends, pour out the base oil in the oil collecting chamber 58, then unscrew the threaded plugs 56 at both ends, push the piston 59 from one end through a tool or equipment, so that the waste grease in the waste grease collection box 5 is squeezed out from the other end by the piston 59, and the exhaust pipe 57 is inflated through the air source to blow the base oil and a small amount of waste grease in the exhaust pipe 57 into the cavity of the box through the small hole 571. The cleaned waste grease collection box 5 can be installed and used again, and the cleaned waste grease is placed in the waste grease collection barrel and carried down the fan. When cleaning again, just carry the empty waste grease collection barrel to the fan. This method is on-site cleaning and on-site disassembly and assembly, and there is no need to replace the waste grease collection barrel.

[0093] The second cleaning method is as follows: there is no need to remove the waste grease collecting box 5, but to remove the grease discharge pipe at the grease inlet / grease outlet 561, unscrew the screw plugs 62 on the outer cover plates 55 at both ends, put a waste grease collecting bag (such as a plastic bag) on ​​one end of the grease inlet, so that the base oil in the oil collecting chamber 58 flows out, and squeeze the piston 59 from the opening at the end of the box body away from the grease inlet 561 through the lever mechanism, so that the piston 59 moves toward the end of the grease inlet 561, so that the waste grease in the waste grease collecting box 5 is squeezed out from the end of the grease inlet 561 by the piston 59, and then the waste grease collecting bag is removed and the bag opening is sealed, and then the exhaust pipe 57 is inflated through the carried air source to blow the base oil and a small amount of waste grease in the exhaust pipe 57 into the cavity of the box body through the small hole 571, and the waste grease collecting bag can be carried down when the fan is lowered. The whole process does not require the disassembly of the waste grease collecting box, nor does it require the waste grease collecting box to be carried back and forth, and there is no need to replace the waste grease collecting box, which is very convenient. Of course, the waste grease collection bag in this method can also be replaced by a waste grease collection bucket, but it is inconvenient to carry the waste grease collection bucket when using the fan.

[0094] The third cleaning method is as follows: when climbing the fan, carry an empty waste grease collection box up, first remove the waste grease collection box 5 that is full of waste grease from its installation place, replace it with an empty waste grease collection box, then carry the full waste grease collection box 5 down the fan, unscrew the screw plugs 62 on the outer cover plates 55 at both ends under the fan, pour out the base oil in the oil collection chamber 58, then unscrew the threaded plugs 56 at both ends, push the piston 59 from one end through a tool or device, so that the waste grease in the waste grease collection box 5 is squeezed out from the other end by the piston 59, and inflate the exhaust pipe 57 through the air source to blow the base oil and a small amount of waste grease in the exhaust pipe 57 into the cavity of the box through the small hole 571. The advantage of this method is that the stay time on the fan is short, and the replaced waste grease collection box can be slowly cleaned under the fan, which is cheaper than the method of cleaning on the fan. The disadvantage is that it is inconvenient to carry the waste grease collection box up and down the fan.

[0095] A structure of waste fat collection box: Fig.12 As shown, the difference from the above-mentioned embodiment is that a hose 9 is connected between the grease inlet 561 of the waste grease collection box and the piston 59, and the left end of the hose 9 is connected to the grease inlet 561, so that the waste grease entering from the grease inlet 561 can enter the interior of the hose 9 and flow along the hose 9, and the other end of the hose 9 is fixed on the piston 59, and the piston 59 will move with the right end of the hose 9 when moving. Since the hose 9 has a certain degree of softness, it can be stretched or folded when moving with the piston 59, and will not affect the flow of the internal waste grease when stretching and folding. A radial grease outlet 91 is provided at the right end of the hose 9 near the piston 59, so that the waste grease in the hose 9 can flow out and enter the inner cavity on the left side of the piston 59.

[0096] When in use, after the waste grease enters the hose 9 from the waste grease port at the left end of the box body, it flows out from the grease outlet 91 at the right end of the hose 9, and squeezes the air on the left side of the piston 59 and the air in the hose 9 into the exhaust pipe 57 and is discharged from both ends. When the waste grease at the left end of the piston 59 is full, the piston 59 can be pushed to move to the right. While moving, the waste grease flows out from the grease outlet 91. This process can ensure that the air in the waste grease can be discharged more thoroughly.

[0097] Another embodiment of the waste fat collection box: Figure 14-15 As shown, the difference from other embodiments is that only one exhaust pipe 57 is arranged in the box body, and the exhaust pipe 57 is arranged coaxially with the cylinder 53, that is, the exhaust pipe 57 is located at the center of the cylinder 53, and a plurality of small holes 571 are evenly distributed in the circumferential direction and the axial direction on the exhaust pipe 57, and the piston 59 is slidably sleeved on the exhaust pipe 57, specifically, the piston 59 is sleeved on the exhaust pipe 57 through the cooperation of a threaded sleeve and a nut, and at least one O-ring is arranged at the contact point between the inner surface of the threaded sleeve and the exhaust pipe 57, so that when the threaded sleeve slides along the exhaust pipe 57, the gap between the exhaust pipe 57 and the threaded sleeve will not leak grease. In addition, a circular opening 7 with a diameter consistent with the outer diameter of the exhaust pipe 57 is arranged at the center on the inner cover plates 55 at both ends, so that the end of the exhaust pipe 57 can pass through. At least two openings are provided on the inner cover plate 55. In this embodiment, three openings are provided. Two of the openings are located on a diameter line of the inner cover plate 55. The openings can be used as grease inlet 561 or grease outlet 561, or as an inlet and outlet for inserting an oil cleaning device to push the piston 59 to move. A cover 551 is also connected to the outer surface of the inner cover plate 55 by screws, welding, or bonding. The cover 551 is coaxially arranged with the inner cover plate 55 and is buckled at the opening 7 on the inner cover plate 55. The cover 551 and the inner cover plate 55 enclose a cylindrical cavity, which constitutes an oil collecting cavity 58. The two ends of the exhaust pipe 57 extend into the oil collecting cavities 58 at the two ends respectively, and the two ends of the exhaust pipe 57 are abutted against the bottom of the cover 551 to prevent the exhaust pipe 57 from moving in the axial direction. An air outlet pipe 581 extends from the cover 551 into the oil collecting chamber 58. One end of the air outlet pipe 581 is connected to the oil collecting chamber 58 and the other end is connected to the outside atmosphere. The exhaust pipe 57 is connected to the inner cavity of the cylinder 53 and the oil collecting chamber 58 through the small hole 571.

[0098] When in use, the piston 59 is moved to one end by a tool, and the grease outlet pipes of the plurality of grease suction and discharge devices are connected to the grease inlet 561 at one end of the waste grease collection box where the piston 59 is located. When the grease suction and discharge device is working, the waste grease can be introduced into the cavity of the cylinder 53 through the grease inlet 561, and the piston 59 is pushed to move toward the other end. At the same time, the air and base oil in the cylinder 53 or the waste grease can be discharged into the oil collecting chamber 58 through the small hole 571 of the exhaust pipe 57, and the base oil remains in the oil collecting chamber 58, and the air is discharged through the exhaust pipe 581. When the oil is full and needs to be cleaned, a special tool with two forks is used to enter from the grease inlet 561 near one end of the piston 59 and push the piston 59 to move toward the other end, so that the waste grease in the cylinder 53 is discharged from the corresponding grease outlet 561. This embodiment has a simple structure, is easy to operate, and is very practical.

[0099] like Fig.11 As shown, the waste grease collection system can also use a single-line grease suction and discharge device 3, that is, the grease suction and discharge device 3 uses a single oil circuit and a return spring to control the reciprocating movement of the piston in the grease suction and discharge device. At this time, the power pump 11 outputs a single oil circuit.

[0100] Regarding other embodiments of the shape of the box body: the box body can be a rectangular structure (hollow cuboid), that is, the cover plates at both ends are square plates, and the cylinder in the middle is replaced by a square cylinder; similarly, it can also be a structure with a cross-section of a hollow triangular prism, a hollow pentagonal prism, etc.; of course, if the piston is not provided, the box body can be any geometric shape or irregular shape with a cavity. In this case, the corresponding exhaust pipe is not limited to a straight pipe, but can also be a curved pipe, a flexible pipe, etc.; when the piston is provided, the box body does not necessarily have to be a uniform cross-sectional structure, but can also be a conical structure with one end large and the other end small. In this case, the piston needs to meet a certain elasticity, that is, when the piston moves between the large end and the small end, its outer diameter must be adaptively elastically deformed so as to seal and fit with the inner wall of the box body.

[0101] Regarding other embodiments of the structure of the box body: the box body may also adopt an integrated structure, that is, the cylinder and the cover plate are integrally formed, or one end of the cylinder and the cover plate are integrally formed, and the other end of the cylinder and the cover plate are detachably connected. The connection method is not limited to the above-mentioned connecting column crimping, and threaded connection, snap-on connection and the like may also be used.

[0102] In another embodiment of the box, at one end of the box away from the grease inlet (for example Figure 2 A compression spring is arranged between the right end of the housing and the piston, so that when waste grease is pumped into the housing through the grease inlet to move the piston to the right, the compression spring always provides an elastic force to the piston toward the left direction.

[0103] Regarding other embodiments of the exhaust pipe: the exhaust pipe is not limited to a rigid hard pipe, but can also be a flexible hose, a coil, a spiral pipe, a meander pipe, an S-shaped pipe, etc. The arrangement of the small holes on the exhaust pipe is not limited to the above, but can also be a staggered arrangement, an uneven arrangement, or even an arrangement with a density that gradually changes from one end to the other. The number of exhaust pipes can also be adjusted according to the needs of use. When there are more small holes and the box diameter is smaller, the number of exhaust pipes can be appropriately reduced, otherwise it can be appropriately increased. The arrangement of the exhaust pipes can be uniform, or it can be appropriately adjusted according to the needs of use, for example, more are arranged in the upper part where there is more gas, and less are arranged in the lower part where there is less gas.

[0104] Regarding other embodiments of the oil collecting chamber: the main function of the oil collecting chamber is to separate the base oil from the gas, and to store the base oil. Therefore, it needs to utilize the characteristics of light gas and heavy base oil. Its shape is not limited to a rectangular cross-section, but can also be a circular or triangular cross-section. It can also be a semi-annular groove or a rectangular groove, etc. The specific shape is adapted to the shape of the box to ensure that each exhaust pipe can be easily passed.

[0105] In the above embodiment, the grease inlet and the grease outlet are the same opening, but in other embodiments, they may be separately provided.

[0106] The first embodiment of the automatic grease changing system of the present invention: Figure 8 As shown, the automatic grease changing system includes a centralized lubrication system for adding grease to the variable pitch bearing, that is, it includes a grease pump 1, a distributor 2, a pipeline and other components. The grease pump 1 supplies oil through the pipeline to the distributor 2, and the distributor 2 distributes the grease to each lubrication point. At the same time, the automatic grease changing system also includes a waste grease collection system, which includes a grease suction and discharge device 3 and a waste grease collection box 5. The power of the grease suction and discharge device 3 shares the grease pump 1 with the centralized lubrication system. In other embodiments, the grease supply system for lubrication and the waste grease collection system for waste grease collection can also use independent power. The waste grease collection system has been clearly described in the above embodiment and will not be repeated.

[0107] The second embodiment and the third embodiment of the automatic grease changing system of the present invention are respectively shown in Fig. 9 and Fig.10 shown.

[0108] The specific embodiment of the waste grease collection box cleaning method of the present invention is the same as the cleaning method in the above-mentioned waste grease collection system, and will not be repeated here.

[0109] The specific embodiment of the waste fat collection box of the present invention has the same structure as the waste fat collection box in the above-mentioned waste fat collection system, and will not be described in detail.

[0110] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. Waste fat collection box, characterized in that: The utility model comprises a box body, which is provided with a grease inlet and a grease outlet, a cavity for accommodating waste grease, at least one exhaust pipe is provided in the cavity, each exhaust pipe is provided with a plurality of small holes for exhausting air and discharging the base oil separated from the waste grease, the exhaust pipe is connected with the external atmosphere through an exhaust channel provided on the box body, the exhaust pipe is also connected with the cavity through the small holes, an oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe, the oil collecting chamber is divided into an air chamber and an oil chamber, the exhaust pipe is connected to the air chamber, and an air outlet is also provided on the air chamber for discharging the air in the oil collecting chamber, after the waste grease enters the cavity from the grease inlet, the air in the cavity and the separated base oil are discharged into the exhaust pipe from the small holes, after the base oil and air are connected to the air chamber from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the air outlet.

2. The waste fat collection box according to claim 1, characterized in that: The box body is a cylindrical shell structure, and the cavity of the box body is a structure with a uniform cross section along the axial direction.

3. The waste fat collection box according to claim 2, characterized in that: The exhaust pipe extends along the axial direction of the box body. The exhaust pipe is a rigid pipe. A piston is slidingly sleeved on the exhaust pipe. The outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

4. The waste fat collection box according to claim 2 or 3, characterized in that: The box body comprises a cylinder in the middle and cover plates located at two ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on the two ends of the cylinder.

5. The waste fat collection box according to claim 2 or 3, characterized in that: Openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

6. The waste fat collection box according to claim 2 or 3, characterized in that: The box body is cylindrical, and the oil collecting chamber is an annular chamber.

7. The waste fat collection box according to claim 1, characterized in that: The waste fat collection box includes a detection module for detecting the amount of waste fat in the box, and the detection module can detect the liquid level of the waste fat in the box.

8. The waste fat collection box according to claim 7, characterized in that: The box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-sectional structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the sliding sleeve of the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body.

9. The waste fat collection box according to claim 8, characterized in that: The detection module comprises a linear distance measuring sensor which is installed on the piston or on the end of the box body away from the grease inlet.

10. The waste fat collection box according to claim 3, characterized in that: Part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is arranged on the box body along the moving direction of the piston.

11. The waste fat collection box according to claim 3, characterized in that: A travel switch is arranged on the box body at one end away from the grease inlet to stop pumping waste grease into the box body and sound an alarm when the waste grease in the box body is full.

12. The waste fat collection box according to claim 3, characterized in that: A spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

13. The waste fat collection box according to claim 2 or 3, characterized in that: Openings are respectively arranged at both ends of the box body, and covers are arranged outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The covers arranged at the openings at both ends of the box body and the space enclosed by the box body constitute the oil collecting chamber.

14. A waste grease collection system, comprising at least one grease suction and discharge device for installation on a grease discharge port of a bearing, characterized in that: The waste grease collection box also includes a box body, which is provided with a grease inlet and a grease outlet. The waste grease outlet of each grease suction and discharge device is connected to the grease inlet through a grease discharge pipe. The box body is provided with a cavity for accommodating waste grease. The cavity is provided with at least one exhaust pipe. Each exhaust pipe is provided with a plurality of small holes for exhausting and discharging the base oil separated from the waste grease. The exhaust pipe is connected to the external atmosphere through an exhaust channel provided on the box body. The exhaust pipe is also connected to the cavity through small holes. An oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe. The oil collecting chamber is divided into an air chamber and an oil chamber. The exhaust pipe is connected to the air chamber. An outlet is also provided on the air chamber for discharging the air in the oil collecting chamber. After the waste grease enters the cavity from the grease inlet, the air in the cavity and the separated base oil are discharged into the exhaust pipe from the small holes. After the base oil and air are passed into the air cavity from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the outlet.

15. The waste fat collection system according to claim 14, characterized in that: The box body is a cylindrical shell structure, and the cavity of the box body is a structure with a uniform cross section along the axial direction.

16. The waste fat collection system according to claim 15, characterized in that: The exhaust pipe extends along the axial direction of the box body. The exhaust pipe is a rigid pipe. A piston is slidingly sleeved on the exhaust pipe. The outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

17. The waste fat collection system according to claim 15 or 16, characterized in that: The box body comprises a cylinder in the middle and cover plates located at two ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on the two ends of the cylinder.

18. The waste fat collection system according to claim 15 or 16, characterized in that: Openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

19. The waste fat collection system according to claim 15 or 16, characterized in that: The box body is cylindrical, and the oil collecting chamber is an annular chamber.

20. The waste fat collection system according to claim 14, characterized in that: The waste fat collection box includes a detection module for detecting the amount of waste fat in the box, and the detection module can detect the liquid level of the waste fat in the box.

21. The waste fat collection system according to claim 20, characterized in that: The box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-sectional structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the sliding sleeve of the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body.

22. The waste fat collection system according to claim 21, characterized in that: The detection module comprises a linear distance measuring sensor which is installed on the piston or on the end of the box body away from the grease inlet.

23. The waste fat collection system according to claim 16, characterized in that: Part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is arranged on the box body along the moving direction of the piston.

24. The waste fat collection system according to claim 16, characterized in that: A travel switch is arranged on the box body at one end away from the grease inlet, and the waste grease collection box comprises a control module, which is electrically connected to the travel switch to control the grease suction and discharge device to stop and alarm when the waste grease in the box body is full.

25. The waste fat collection system according to claim 16, characterized in that: A spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

26. The waste fat collection system according to claim 15 or 16, characterized in that: Openings are respectively arranged at both ends of the box body, and covers are arranged outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The covers arranged at the openings at both ends of the box body and the space enclosed by the box body constitute the oil collecting chamber.

27. An automatic grease replacement system, comprising a centralized lubrication system and a waste grease collection system, wherein the waste grease collection system comprises at least one grease suction and discharge device for installation on a grease discharge port of a bearing, characterized in that: The waste grease collection system also includes a waste grease collection box, which includes a box body, which is provided with a grease inlet and a grease outlet, and the waste grease outlet of each grease suction and discharge device is connected to the grease inlet through a grease discharge pipe. The box body is provided with a cavity for accommodating waste grease, and the cavity is provided with at least one exhaust pipe, and each exhaust pipe is provided with a plurality of small holes for exhausting and discharging the base oil separated from the waste grease. The exhaust pipe is connected to the external atmosphere through an exhaust channel provided on the box body, and the exhaust pipe is also connected to the cavity through the small holes, and an oil collecting chamber is provided on the exhaust channel for collecting the base oil flowing out of the exhaust pipe. The oil collecting chamber is divided into an air chamber and an oil chamber, and the exhaust pipe is connected to the air chamber, and an air outlet is also provided on the air chamber for discharging the air in the oil collecting chamber. After the waste grease enters the cavity from the grease inlet, the air in the cavity and the separated base oil are discharged into the exhaust pipe from the small holes. After the base oil and air are passed into the air cavity from the exhaust pipe, the base oil enters the oil chamber and the air is discharged from the air outlet.

28. The automatic grease replacement system according to claim 27, characterized in that: The box body is a cylindrical shell structure, and the cavity of the box body is a structure with a uniform cross section along the axial direction.

29. The automatic grease replacement system according to claim 28, characterized in that: The exhaust pipe extends along the axial direction of the box body. The exhaust pipe is a rigid pipe. A piston is slidingly sleeved on the exhaust pipe. The outer peripheral surface of the piston is slidingly sealed with the cavity wall of the cavity.

30. The automatic grease replacement system according to claim 28 or 29, characterized in that: The box body comprises a cylinder in the middle and cover plates located at two ends of the cylinder. The two cover plates are connected by connecting columns and then sealed and pressed on the two ends of the cylinder.

31. The automatic grease replacement system according to claim 28 or 29, characterized in that: Openings are respectively arranged at both ends of the box body, and sealing plugs are detachably arranged at the openings.

32. The automatic grease replacement system according to claim 28 or 29, characterized in that: The box body is cylindrical, and the oil collecting chamber is an annular chamber.

33. The automatic grease replacement system according to claim 27, characterized in that: The waste fat collection box includes a detection module for detecting the amount of waste fat in the box, and the detection module can detect the liquid level of the waste fat in the box.

34. The automatic grease replacement system according to claim 33, characterized in that: The box body is a cylindrical shell structure, the cavity of the box body is an axially uniform cross-sectional structure, the exhaust pipe extends along the axial direction of the box body, the exhaust pipe is a rigid pipe, a piston is provided on the sliding sleeve of the exhaust pipe, the outer peripheral surface of the piston is in sliding sealing cooperation with the cavity wall of the cavity, and the detection module can detect the position of the piston to infer the liquid level of the waste fat in the box body.

35. The automatic grease replacement system according to claim 34, characterized in that: The detection module comprises a linear distance measuring sensor which is installed on the piston or on the end of the box body away from the grease inlet.

36. The automatic grease replacement system according to claim 29, characterized in that: Part or all of the box body is made of transparent material to display the position of the piston, and a scale for displaying the volume of waste fat collected in the box body is arranged on the box body along the moving direction of the piston.

37. The automatic grease replacement system according to claim 29, characterized in that: A travel switch is arranged on the box body at one end away from the grease inlet, and the waste grease collection box includes a control module, which is electrically connected to the travel switch to control the centralized lubrication system and the waste grease collection system to stop and alarm when the waste grease in the box body is full.

38. The automatic grease replacement system according to claim 29, characterized in that: A spring is arranged between the piston and an end of the box body away from the grease inlet to provide an elastic force for the piston toward the grease inlet.

39. The automatic grease replacement system according to claim 28 or 29, characterized in that: Openings are respectively arranged at both ends of the box body, and covers are arranged outside the openings. Both ends of the exhaust pipe extend from the openings and pass into the covers. The covers arranged at the openings at both ends of the box body and the space enclosed by the box body constitute the oil collecting chamber.

40. The method for cleaning a waste fat collection box according to claim 1, characterized in that: The following steps are involved: S10, opening the box after collecting the waste fat, and taking out the waste fat in the cavity; S20, discharging the base oil collected in the oil collecting chamber from the air outlet on the oil collecting chamber; S30, inflate the exhaust pipe through the air source to blow the base oil and a small amount of waste grease in the exhaust pipe into the cavity of the box through the small holes.

41. The cleaning method according to claim 40, characterized in that When cleaning the waste grease, remove the sealing plugs at both ends of the box body, and push the piston in the box body from the opening at the end without waste grease to discharge the waste grease in the box body from the opening at the other end.

42. The cleaning method according to claim 41, characterized in that Before cleaning the waste grease, remove the box body after collecting the waste grease from its installation place, and push the piston to move through the squeezing device.

43. The cleaning method according to claim 41, characterized in that Keep the box in its installation position, remove the grease discharge pipe connected to the grease inlet of the box, and push the piston from the end of the box away from the grease inlet through the lever mechanism to move the waste grease in the box from the grease inlet.

44. The cleaning method according to claim 43, characterized in that Before squeezing out the waste fat, a waste fat collection bag or a waste fat collection bucket is arranged at one end of the fat inlet of the box body to receive the squeezed waste fat.

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