Oil-throwing-preventing waste grease collecting system and variable-pitch bearing system

Abstract

The invention relates to an anti-oil-throwing waste grease collecting system and a variable pitch bearing system. The problem of oil throwing can be avoided while smooth exhaust is guaranteed. The waste grease collecting pipe is used for collecting and storing waste grease; the waste grease collecting unit comprises a three-way connector, one connector of the three-way connector is used for being connected with a grease discharging opening of a bearing, and the other two connectors are used for being connected with waste grease collecting pipes respectively. The waste grease collecting pipe is connected between any two adjacent three-way joints; small exhaust holes are formed in the waste grease collecting pipe and / or the three-way connector, oil absorption sealing bodies made of oil absorption expansion materials are arranged at the small exhaust holes, and the oil absorption sealing bodies have the first working state that the small exhaust holes are opened when the oil absorption sealing bodies do not make contact with the waste grease and the second working state that the oil absorption sealing bodies can expand and block the small exhaust holes when making contact with the waste grease.

Description

Technical Field

[0001] The invention relates to an anti-oil-swing waste grease collection system and a variable pitch bearing system. Background Art

[0002] Grease is generally used for lubrication of larger bearings. Taking the variable pitch bearing of a wind turbine as an example, the variable pitch bearing has multiple grease discharge ports around it for discharging waste grease. The traditional method of setting a collection bottle or collection bag at each grease discharge port mainly has the problem of easy falling off and cumbersome and troublesome replacement.

[0003] Another technology is to set a three-way or four-way joint at each grease discharge port, and adopt a collecting hose series connection method to concentrate the waste grease flowing out of each grease discharge port in the collecting hose, such as the technical solution disclosed in the authorization announcement number CN216520867U. Although it reduces the frequency of replacement, is more convenient to replace and is not easy to fall off, it has a new problem: in order to exhaust the air in the three-way joint and the collecting hose, a vent hole is generally set on the three-way joint, but when the waste grease is fully collected, the base oil in the waste grease will enter the vent hole, and with the rotation of the variable pitch bearing, under the action of centrifugal force, the base oil is more easily thrown out of the vent hole, causing the surrounding environment to be polluted and difficult to clean.

[0004] Therefore, how to ensure smooth exhaust while avoiding the oil throwing problem has become a key factor affecting whether the waste fat collection system can be widely promoted and applied. Summary of the invention

[0005] The object of the present invention is to provide an anti-oil-slinging waste grease collection system, which can avoid the oil-slinging problem while ensuring smooth exhaust; the object of the present invention is also to provide a variable pitch bearing system using the above-mentioned anti-oil-slinging waste grease collection system.

[0006] The technical scheme of the waste grease collection system for preventing oil throwing is as follows: The waste grease collection system for preventing oil throwing comprises: A waste fat collection tube, used for collecting and storing waste fat; The waste grease collection unit comprises a three-way joint, one interface of the three-way joint is used to be connected to the grease discharge port of the bearing, and the other two interfaces are respectively used to be connected to the waste grease collection pipes; The waste fat collection pipe is connected between any two adjacent three-way connectors; An exhaust hole is provided on the waste grease collection pipe and / or the three-way joint, and an oil absorption seal made of oil absorption expansion material is provided at the exhaust hole. The oil absorption seal has a first working state that opens the exhaust hole when not in contact with the waste grease, and has a second working state that expands and blocks the exhaust hole when in contact with the waste grease.

[0007] The beneficial effects of this solution: Compared with the prior art, the setting of the exhaust hole allows the air originally existing in the waste fat collection pipe and the three-way joint to be squeezed out by the collected waste fat, and when the waste fat is fully collected, the waste fat contacts the oil absorption seal at the exhaust hole, and the base oil in the waste fat is adsorbed by the oil absorption seal, causing the volume of the oil absorption seal to expand, thereby sealing the exhaust hole and preventing the collected waste fat from flowing out of the exhaust hole. It can be seen that this application solves the problem of exhausting the waste fat collection pipe and the problem of waste fat flowing out of the exhaust hole after it is fully collected through simple structural improvements, and it is low-cost and can be used not only for new products but also for the transformation of old products.

[0008] Furthermore, the oil absorption seal body is in a circular ring shape.

[0009] Further, the oil absorption seal body is made of oil absorption swelling rubber.

[0010] Furthermore, the oil absorption seal can be detachably mounted on the side wall of the exhaust hole.

[0011] Furthermore, the exhaust hole is arranged in the middle of the waste fat collection pipe. Since the waste fat enters the waste fat collection pipe from both ends of the waste fat collection pipe simultaneously, the middle of the waste fat collection pipe is the last area to be filled. The exhaust hole is arranged here, so that the air in the pipe can be exhausted more thoroughly, and more waste fat can be filled in the pipe.

[0012] Furthermore, the exhaust hole is located at the upper part of the waste fat collection pipe. Due to the upward characteristics of gas, it is arranged at the upper part to ensure that the gas is discharged more thoroughly, especially for the air entrained in the waste fat, when the bubbles burst and overflow during the movement of the waste fat, it can also be smoothly discharged from the exhaust hole at the upper part, so that the waste fat collection pipe can collect more.

[0013] Furthermore, the exhaust channel corresponding to the exhaust hole is an L-shaped channel. The L-shaped channel design will not affect the exhaust of gas, but will increase the resistance and difficulty of the waste fat flowing out, achieving the effect of air permeability but not fat permeability.

[0014] Furthermore, the exhaust hole is arranged on the waste fat collection pipe, and an exhaust hoop is arranged on the waste fat collection pipe corresponding to the exhaust hole, and a gas channel connecting the inside and the outside is arranged on the exhaust hoop, and the inner opening of the gas channel is connected to the exhaust hole. The arrangement of the exhaust hoop and the gas channel inside it can increase the length of the exhaust path, which has no effect on the discharge of gas, but can limit the outflow of waste fat, especially when the waste fat collection pipe rotates with the bearing, the waste fat is not easily thrown out from the exhaust hole due to centrifugal force.

[0015] Furthermore, the exhaust holes are arranged on the waste fat collection pipe, and a tile-shaped protective block is attached to the waste fat collection pipe corresponding to the exhaust holes. The protective block is provided with a gas channel connecting the inside and the outside, and the inner opening of the gas channel is connected to the exhaust holes. The tile-shaped structure is simpler and has lower cost than the exhaust hoop structure.

[0016] Furthermore, there are a plurality of exhaust holes evenly distributed along the length direction of the waste fat collecting pipe. This arrangement can speed up the discharge speed of the air in the pipe and the air overflowing from the waste fat, but at this time, the diameter of the exhaust holes needs to be set smaller.

[0017] The technical solution of the variable pitch bearing system of the present invention is as follows: it includes a variable pitch bearing and an anti-oil-slinging waste grease collection system installed on the variable pitch bearing, and the anti-oil-slinging waste grease collection system includes: A waste fat collection pipe, used for collecting and storing waste fat; The waste grease collection unit comprises a three-way joint, one interface of the three-way joint is used to be connected to the grease discharge port of the bearing, and the other two interfaces are respectively used to be connected to the waste grease collection pipes; The waste fat collection pipe is connected between any two adjacent three-way connectors; An exhaust hole is provided on the waste grease collection pipe and / or the three-way joint, and an oil absorption seal made of oil absorption expansion material is provided at the exhaust hole. The oil absorption seal has a first working state that opens the exhaust hole when not in contact with the waste grease, and has a second working state that expands and blocks the exhaust hole when in contact with the waste grease.

[0018] The beneficial effects of this solution: Compared with the prior art, the setting of the exhaust hole allows the air originally existing in the waste fat collection pipe and the three-way joint to be squeezed out by the collected waste fat, and when the waste fat is fully collected, the waste fat contacts the oil absorption seal at the exhaust hole, and the base oil in the waste fat is adsorbed by the oil absorption seal, causing the volume of the oil absorption seal to expand, thereby sealing the exhaust hole and preventing the collected waste fat from flowing out of the exhaust hole. It can be seen that this application solves the problem of exhausting the waste fat collection pipe and the problem of waste fat flowing out of the exhaust hole after it is fully collected through simple structural improvements, and it is low-cost and can be used not only for new products but also for the transformation of old products.

[0019] Furthermore, the oil absorption seal body is in a circular ring shape.

[0020] Further, the oil absorption seal body is made of oil absorption swelling rubber.

[0021] Furthermore, the oil absorption seal can be detachably mounted on the side wall of the exhaust hole.

[0022] Furthermore, the exhaust hole is arranged in the middle of the waste fat collection pipe. Since the waste fat enters the waste fat collection pipe from both ends of the waste fat collection pipe simultaneously, the middle of the waste fat collection pipe is the last area to be filled. The exhaust hole is arranged here, so that the air in the pipe can be exhausted more thoroughly, and more waste fat can be filled in the pipe.

[0023] Furthermore, the exhaust hole is located at the upper part of the waste fat collection pipe. Due to the upward characteristics of gas, it is arranged at the upper part to ensure that the gas is discharged more thoroughly, especially for the air entrained in the waste fat, when the bubbles burst and overflow during the movement of the waste fat, it can also be smoothly discharged from the exhaust hole at the upper part, so that the waste fat collection pipe can collect more.

[0024] Furthermore, the exhaust channel corresponding to the exhaust hole is an L-shaped channel. The L-shaped channel design will not affect the exhaust of gas, but will increase the resistance and difficulty of the waste fat flowing out, achieving the effect of air permeability but not fat permeability.

[0025] Furthermore, the exhaust hole is arranged on the waste fat collection pipe, and an exhaust hoop is arranged on the waste fat collection pipe corresponding to the exhaust hole, and a gas channel connecting the inside and the outside is arranged on the exhaust hoop, and the inner opening of the gas channel is connected to the exhaust hole. The arrangement of the exhaust hoop and the gas channel inside it can increase the length of the exhaust path, which has no effect on the discharge of gas, but can limit the outflow of waste fat, especially when the waste fat collection pipe rotates with the bearing, the waste fat is not easily thrown out from the exhaust hole due to centrifugal force.

[0026] Furthermore, the exhaust holes are arranged on the waste fat collection pipe, and a tile-shaped protective block is attached to the waste fat collection pipe corresponding to the exhaust holes. The protective block is provided with a gas channel connecting the inside and the outside, and the inner opening of the gas channel is connected to the exhaust holes. The tile-shaped structure is simpler and has lower cost than the exhaust hoop structure.

[0027] Furthermore, there are a plurality of exhaust holes evenly distributed along the length direction of the waste fat collecting pipe. This arrangement can speed up the discharge speed of the air in the pipe and the air overflowing from the waste fat, but at this time, the diameter of the exhaust holes needs to be set smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of Example 1 of the waste grease collection system for preventing oil throwing of the present invention; Figure 2 for Figure 1 The partial enlarged view of point A in the middle shows that the oil suction seal is in the first working state; Figure 3 for Figure 2 A schematic structural diagram of the corresponding oil absorption seal body in a second working state; Figure 4It is a structural schematic diagram of Example 2 of the waste grease collection system for preventing oil throwing off of the present invention; In the figure: 1-paddle bearing, 11-grease discharge port, 2-tee joint, 21-L-shaped channel, 3-waste grease collection pipe, 4-exhaust hole, 5-oil absorption seal, 6-waste grease, 7-air, 8-hoop. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0033] Embodiment 1 of the waste grease collection system for preventing oil throwing of the present invention: Figure 1-3 As shown, the anti-oil-swinging waste grease collection system is mainly used for collecting waste grease from bearings, and mainly includes multiple waste grease collection tubes 3 and multiple waste grease collection units, which are staggered and connected one by one to form a ring structure and cover the corresponding bearings. The waste grease collection of variable pitch bearings is taken as an example below.

[0034] The waste grease collecting tube 3 is used to collect and store waste grease, and a plastic hose is used in this embodiment. The waste grease collecting unit includes a three-way joint 2, one interface of the three-way joint 2 is used to connect to the grease discharge port 11 of the bearing, and the other two interfaces are used to connect to the waste grease collecting tube 3. The waste grease collecting tube 3 is connected between any two adjacent three-way joints 2; and an exhaust hole 4 is provided on the waste grease collecting tube 3. By providing the exhaust hole 4 on the waste grease collecting tube 3, when the waste grease entering the waste grease collecting tube 3 squeezes the air in the tube while collecting the waste grease, the air in the tube can be gradually discharged along the exhaust hole 4, so that the waste grease will not be hindered from filling the waste grease collecting tube 3 due to the pressure. This simple modification will not greatly change the original plan and can bring high benefits, especially for this passive waste grease collection method. Since there is no special power drive, the waste grease has poor fluidity. If there is pressure, it will greatly affect the effect of waste grease collection. The improvement of this application ensures that there is no more pressure, and the waste grease will flow more smoothly.

[0035] At the same time, in order to prevent the waste fat from overflowing and polluting the environment when it fills the waste fat collecting pipe 3, a circular oil absorption seal 5 made of oil absorption expansion material is embedded in the exhaust hole 4. In this embodiment, oil absorption expansion rubber is used. The oil absorption seal 5 is usually in the first working state. Figure 2 As shown in FIG. 1 , at this time, the waste grease collecting tube 3 is not yet full of waste grease, and the air in the tube can smoothly pass through the oil absorption seal 5 and be discharged out of the tube. When the waste grease is fully collected, that is, the waste grease collecting tube 3 is full of waste grease, as shown in FIG. Figure 3 As shown, the base oil in the waste grease contacts the oil absorption seal 5, and the lipophilic components in the oil absorption seal 5 contact the oil, and the oil molecules enter the rubber through physical effects such as diffusion, capillary and surface adsorption. These oil molecules form a very strong binding force with the lipophilic functional groups in the rubber, causing the rubber to swell, thereby closing the exhaust hole 4, that is, the oil absorption seal 5 is in the second working state of blocking the exhaust hole 4. At this time, the waste grease in the waste grease collection pipe 3 will not be discharged from the exhaust hole 4. Even if the rotation of the variable pitch bearing generates centrifugal force on the waste grease, the waste grease cannot break through the blockage of the oil absorption seal 5 and be thrown out, thereby effectively avoiding the problem of waste grease being thrown out to pollute the environment.

[0036] In other embodiments, in order to reuse the waste grease collecting tube 3, the oil absorption seal 5 and the inner wall of the exhaust hole 4 can be detachably connected so that the oil absorption seal 5 can be replaced, thereby allowing the waste grease collecting tube 3 to be reused.

[0037] The exhaust hole 4 is arranged in the middle of the waste fat collecting tube 3. Since the waste fat enters the waste fat collecting tube 3 from both ends of the waste fat collecting tube 3 simultaneously, the middle of the waste fat collecting tube 3 is the last area to be filled. By arranging the exhaust hole 4 here, the air in the tube can be discharged more thoroughly, and more waste fat can be filled in the tube. The exhaust hole 4 is located in the upper part of the waste fat collecting tube 3. Due to the upward characteristic of gas, it is arranged in the upper part to ensure that the gas is discharged more thoroughly, especially for the air entrained in the waste fat. When the bubbles burst and overflow during the movement of the waste fat, it can also be discharged smoothly from the exhaust hole 4 in the upper part, so that the waste fat collecting tube 3 can be collected more fully.

[0038] In other embodiments, there are multiple exhaust holes 4, which can be distributed along the length direction of the waste fat collection pipe 3 to increase the exhaust efficiency and avoid the problem that the waste fat collection pipe 3 is too long and part of the gas in the pipe cannot be discharged in time due to the exhaust holes 4 being blocked prematurely.

[0039] Compared with the prior art, the setting of the exhaust hole 4 allows the air originally existing in the waste fat collection pipe 3 and the three-way joint 2 to be squeezed out by the collected waste fat, and when the waste fat is fully collected, the waste fat contacts the oil absorption seal 5 at the exhaust hole 4, and the base oil in the waste fat is adsorbed by the oil absorption seal 5, causing the volume of the oil absorption seal 5 to expand, thereby sealing the exhaust hole and preventing the fully collected waste fat from flowing out of the exhaust hole 4. It can be seen that the present application solves the problem of exhausting the waste fat collection pipe 3 and the problem of waste fat flowing out of the exhaust hole 4 after being fully collected through simple structural improvements, and its cost is low, and it can be used not only for new products, but also for the transformation of old products.

[0040] Embodiment 2 of the waste grease collection system for preventing oil throwing of the present invention: Figure 4 As shown, the difference from Example 1 is that 1-2 exhaust holes 4 are also provided on the three-way joint 2, and each exhaust hole 4 is also provided with an oil absorption seal 5, so as to ensure that the air in the three-way joint 2 can be discharged in time. And the exhaust channel corresponding to the exhaust hole 4 is an L-shaped channel 21. The L-shaped channel 21 design will not affect the discharge of gas, but will increase the resistance and difficulty of the waste fat flowing out, achieving the effect of air permeability but not fat permeability.

[0041] In other embodiments, an exhaust hoop is provided on the waste grease collection pipe 3 corresponding to the exhaust hole 4, a gas passage connecting the inside and the outside is provided on the exhaust hoop, the inner opening of the gas passage is connected to the exhaust hole 4, and the oil absorption seal 5 is provided in the gas passage or in the exhaust hole 4. The exhaust hoop 4 and the gas passage therein can increase the length of the exhaust path, which has no effect on the discharge of gas, but can limit the outflow of waste grease, especially when the waste grease collection pipe 3 rotates with the bearing, the waste grease is not easily thrown out from the exhaust hole 4 due to centrifugal force.

[0042] In other embodiments, a tile-shaped protective block is attached to the waste fat collection pipe 3 corresponding to the exhaust hole 4, a gas passage connecting the inside and the outside is provided on the protective block, the inner opening of the gas passage is connected to the exhaust hole 4, and the oil absorption seal 5 is arranged in the gas passage or in the exhaust hole 4. Compared with the structure of the exhaust hoop, the tile-shaped structure is simpler and has lower cost.

[0043] A specific embodiment of the variable pitch bearing system of the present invention: the variable pitch bearing system includes a variable pitch bearing and a waste grease collection system. The structure of the waste grease collection system is the same as that of the above-mentioned anti-oil-swinging waste grease collection system, and will not be repeated herein.

[0044] 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. Anti-oil-spinning waste grease collection system, including: A waste fat collection tube, used for collecting and storing waste fat; The waste grease collection unit comprises a three-way joint, one interface of the three-way joint is used to be connected to the grease discharge port of the bearing, and the other two interfaces are respectively used to be connected to the waste grease collection pipes; The waste fat collection pipe is connected between any two adjacent three-way connectors; The invention is characterized in that a vent hole is provided on the waste fat collection pipe and / or the three-way joint, and an oil absorption seal made of oil absorption expansion material is provided at the vent hole, and the oil absorption seal has a first working state that opens the vent hole when not in contact with the waste fat, and has a second working state that expands and blocks the vent hole when in contact with the waste fat.

2. The anti-swing oil waste grease collection system according to claim 1 is characterized in that: The oil suction seal body is in the shape of a ring.

3. The anti-spinning waste grease collection system according to claim 1, characterized in that: The oil absorption seal body is made of oil absorption expansion rubber.

4. The anti-swing oil waste grease collection system according to claim 1, characterized in that: The oil absorption seal body can be detachably mounted on the side wall of the exhaust hole.

5. The anti-spinning waste grease collection system according to claim 1, characterized in that: The exhaust hole is arranged in the middle of the waste fat collecting pipe.

6. The anti-swing oil waste grease collection system according to claim 1, characterized in that: The exhaust hole is located at the upper part of the waste grease collection pipe.

7. The anti-swing oil waste grease collection system according to claim 1, characterized in that: The exhaust channel corresponding to the exhaust hole is an L-shaped channel.

8. The anti-swing oil waste grease collection system according to claim 1, characterized in that: The exhaust hole is arranged on the waste fat collection pipe, and an exhaust clamp is arranged on the waste fat collection pipe corresponding to the exhaust hole. The exhaust clamp is provided with a gas channel connecting the inside and the outside, and the inner opening of the gas channel is connected with the exhaust hole.

9. The anti-swing oil waste grease collection system according to claim 1, characterized in that: The exhaust holes are arranged on the waste fat collection tube, and a tile-shaped protective block is pasted on the waste fat collection tube corresponding to the exhaust holes. The protective block is provided with a gas channel connecting the inside and the outside, and the inner opening of the gas channel is connected to the exhaust holes.

10. The variable pitch bearing system is characterized in that: It comprises a variable pitch bearing and an anti-oil-slinging waste grease collection system as described in any one of claims 1 to 9, wherein the anti-oil-slinging waste grease collection system is installed on the variable pitch bearing.

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