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

Abstract

The utility model relates to an anti-oil-throwing waste grease collecting system and a variable pitch bearing system, which can avoid the problem of oil throwing while ensuring smooth exhaust. 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 utility model relates to an anti - oil - splashing waste grease collection system and a pitch bearing system. Background Art

[0002] For larger bearings, grease is generally used for lubrication inside. Taking the pitch bearing of a wind turbine as an example, multiple grease discharge ports are arranged around the pitch bearing for discharging waste grease. The traditional method of setting a collection bottle or a collection bag at each grease discharge port mainly has problems of easy detachment and cumbersome replacement.

[0003] Another technique is to set three - way or four - way joints at each grease discharge port and connect them in series with a collection hose, so that the waste grease flowing out of each grease discharge port is concentrated in the collection hose. For example, the technical solution disclosed in the authorized publication number CN216520867U. Although it reduces the replacement frequency, is more convenient to replace and is not easy to fall off, there are new problems: in order to discharge the air in the three - way joint and the collection hose, an exhaust hole is generally set on the three - way joint. However, when the waste grease is full, the base oil in the waste grease will enter the exhaust hole, and with the rotation of the pitch bearing, under the action of centrifugal force, the base oil is more likely to be thrown out of the exhaust hole, resulting in environmental pollution and difficult cleaning.

[0004] Therefore, how to avoid the oil - splashing problem while ensuring smooth exhaust has become a key factor affecting the wide application of the waste grease collection system. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an anti - oil - splashing waste grease collection system that can avoid the oil - splashing problem while ensuring smooth exhaust; the purpose of the utility model is also to provide a pitch bearing system applying the above anti - oil - splashing waste grease collection system.

[0006] The technical solution of the anti - oil - splashing waste grease collection system of the utility model is as follows: The anti - oil - splashing waste grease collection system includes:

[0007] A waste grease collection pipe for collecting and storing waste grease;

[0008] A waste grease collection unit including a three - way joint. One interface of the three - way joint is used to connect with the grease discharge port of the bearing, and the other two interfaces are respectively used to connect with the waste grease collection pipe;

[0009] The waste grease collection pipe is connected between any two adjacent three - way joints;

[0010] Exhaust small holes are provided on the waste grease collection pipe and / or the three - way joint, and an oil - absorbing sealing body made of oil - absorbing and swelling material is arranged at the exhaust small holes. The oil - absorbing sealing body has a first working state in which the exhaust small holes are opened when not in contact with the waste grease, and a second working state in which it can expand and block the exhaust small holes when in contact with the waste grease.

[0011] Beneficial effects of this solution: Compared with the prior art, the arrangement of the exhaust small holes enables the air originally present in the waste fat collection pipe and the tee joint to be squeezed out by the collected waste fat. Moreover, when the waste fat is full, the waste fat comes into contact with the oil-absorbing sealing body at the exhaust small holes, and the base oil in the waste fat is adsorbed by the oil-absorbing sealing body, causing the volume of the oil-absorbing sealing body to expand, thereby sealing the exhaust small holes and preventing the full waste fat from flowing out through the exhaust small holes. It can be seen that through simple structural improvement, this application solves both the problem of exhausting air from the waste fat collection pipe and the problem of waste fat flowing out through the exhaust small holes after being full, and its cost is low. It can be used not only for new products but also for the transformation of old products.

[0012] Further, the oil-absorbing sealing body is circular ring-shaped.

[0013] Further, the oil-absorbing sealing body is made of oil-absorbing and expanding rubber.

[0014] Further, the oil-absorbing sealing body is detachably installed on the side wall of the exhaust small hole.

[0015] Further, the exhaust small hole is arranged in the middle of the waste fat collection pipe. Since the waste fat enters the waste fat collection pipe synchronously from both ends of the waste fat collection pipe, the middle of the waste fat collection pipe is the last area to be filled. Arranging the exhaust small hole here can make the air in the pipe be exhausted more thoroughly and also enable more waste fat to be filled in the pipe.

[0016] Further, the exhaust small hole is located in the upper part of the waste fat collection pipe. Due to the characteristic that gas rises, arranging it in the upper part can ensure that the gas is exhausted 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 smoothly flow out through the upper exhaust small hole, so that the waste fat collection pipe can be filled more fully.

[0017] Further, the exhaust channel corresponding to the exhaust small hole is an L-shaped channel. The L-shaped channel design does not affect the exhaust of gas, but will increase the resistance and difficulty of the waste fat flowing out, achieving the effect of being breathable but not allowing the fat to pass through.

[0018] Further, the exhaust small 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 small hole. A gas channel communicating inside and outside is arranged on the exhaust hoop, and the inner opening of the gas channel is communicated with the exhaust small hole. The arrangement of the exhaust hoop and the gas channel inside it can increase the length of the exhaust path, which does not affect the exhaust of gas, but can restrict the outflow of waste fat. Especially when the waste fat collection pipe rotates with the bearing, the waste fat is not easily thrown out through the exhaust small hole due to centrifugal force.

[0019] Further, the exhaust small holes are arranged on the waste grease collection pipe. A tile-shaped protection block is pasted on the waste grease collection pipe corresponding to the exhaust small holes. A gas channel communicating inside and outside is provided on the protection block, and the inner port of the gas channel communicates with the exhaust small holes. The tile-shaped structure is simpler and lower in cost compared to the structure of the exhaust hoop.

[0020] Further, there are multiple exhaust small holes, which are evenly distributed along the length direction of the waste grease collection pipe. This setting can accelerate the discharge speed of the air inside the pipe and the air overflowing from the waste grease. However, in this case, the diameter of the exhaust small holes needs to be set smaller.

[0021] The technical solution of the pitch bearing system of the present utility model is as follows: It includes a pitch bearing and an anti-throwing oil waste grease collection system installed on the pitch bearing. The anti-throwing oil waste grease collection system includes:

[0022] A waste grease collection pipe for collecting and storing waste grease;

[0023] A waste grease collection unit, including a three-way joint. One interface of the three-way joint is used to connect to the grease discharge port of the bearing, and the other two interfaces are respectively used to connect to the waste grease collection pipe;

[0024] The waste grease collection pipe is connected between any two adjacent three-way joints;

[0025] The waste grease collection pipe and / or the three-way joint are / is provided with exhaust small holes. An oil-absorbing sealing body made of oil-absorbing and expanding material is arranged at the exhaust small holes. The oil-absorbing sealing body has a first working state in which the exhaust small holes are opened when not in contact with the waste grease, and a second working state in which it can expand and block the exhaust small holes when in contact with the waste grease.

[0026] The beneficial effects of this solution: Compared with the prior art, the setting of the exhaust small holes enables the air originally existing in the waste grease collection pipe and the three-way joint to be squeezed out by the collected waste grease. Moreover, when the waste grease is full, the waste grease contacts the oil-absorbing sealing body at the exhaust small holes, and the base oil in the waste grease is adsorbed by the oil-absorbing sealing body, causing the volume of the oil-absorbing sealing body to expand, thereby sealing the exhaust small holes and preventing the full waste grease from flowing out through the exhaust small holes. It can be seen that through simple structural improvement, this application solves both the problem of exhaust of the waste grease collection pipe and the problem of waste grease flowing out through the exhaust small holes after being full, and its cost is low. It can be used not only for new products but also for the transformation of old products.

[0027] Further, the oil-absorbing sealing body is circular.

[0028] Further, the oil-absorbing sealing body is made of oil-absorbing and expanding rubber.

[0029] Further, the oil-absorbing sealing body is detachably installed on the side wall of the exhaust small hole.

[0030] Furthermore, the exhaust hole is provided in the middle of the waste grease collection pipe. Since waste grease enters the waste grease collection pipe simultaneously from both ends, the middle of the waste grease collection pipe is the last area to be filled. Providing the exhaust hole here can more thoroughly remove the air in the pipe and also allow more waste grease to be filled into the pipe.

[0031] Furthermore, the exhaust holes are located at the top of the waste grease collection pipe. Due to the upward tendency of gas, being located at the top ensures more thorough exhaust of the gas. In particular, air trapped in the waste grease can be smoothly exhausted from the exhaust holes when bubbles burst and overflow as the waste grease moves, thereby allowing the waste grease collection pipe to collect more gas.

[0032] Furthermore, the exhaust channel corresponding to the exhaust hole is an L-shaped channel. The L-shaped channel design does not affect the exhaust of gas, but increases the resistance and difficulty of the waste fat flowing out, achieving the effect of air permeability but not fat permeability.

[0033] Furthermore, a small exhaust hole is provided on the waste grease collection tube, and an exhaust clamp is provided on the waste grease collection tube corresponding to the exhaust hole. The exhaust clamp has a gas channel connecting the inside and outside, and the inner opening of the gas channel is connected to the exhaust hole. The provision of the exhaust clamp and the gas channel within it can increase the length of the exhaust path. This does not affect the discharge of gas, but it can limit the outflow of waste grease. In particular, when the waste grease collection tube rotates with the bearing, the waste grease is not easily thrown out of the exhaust hole due to centrifugal force.

[0034] Furthermore, a small exhaust hole is provided on the waste grease collection tube. A tile-shaped protective block is attached to the waste grease collection tube corresponding to the exhaust hole. The protective block has a gas channel connecting the inside and outside, and the inner opening of the gas channel is connected to the exhaust hole. Compared with the exhaust clamp structure, the tile-shaped structure is simpler and less expensive.

[0035] Furthermore, there are multiple vent holes evenly distributed along the length of the waste grease collecting pipe. This arrangement can speed up the discharge of air in the pipe and air overflowing from the waste grease, but in this case, the diameter of the vent holes needs to be set smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural diagram of Example 1 of the anti-swing oil waste grease collection system of the utility model;

[0037] 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;

[0038] Figure 3 for Figure 2 A schematic structural diagram of the corresponding oil absorption seal in the second working state;

[0039] Figure 4 This is a schematic structural diagram of Embodiment 2 of the anti-splashing oil and waste grease collection system of the present utility model;

[0040] In the figure: 1 - pitch bearing, 11 - grease drain port, 2 - tee joint, 21 - L-shaped channel, 3 - waste grease collection pipe, 4 - exhaust small hole, 5 - oil absorption seal body, 6 - waste grease, 7 - air, 8 - hoop. Specific embodiments

[0041] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the detailed description of the embodiments of the present utility model provided in the drawings below is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0043] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0044] The features and performance of the present utility model are further described in detail below in conjunction with the embodiments.

[0045] Embodiment 1 of the anti-splashing oil and waste grease collection system of the present utility model: As Figures 1-3As shown, the anti-throw waste grease collection system is mainly used for collecting waste grease of bearings, and mainly includes multiple waste grease collection pipes 3 and multiple waste grease collection units. The two are connected in an alternating manner to form an annular structure and cover the corresponding bearings. Here, the waste grease collection of the pitch bearing is taken as an example.

[0046] The waste grease collection pipe 3 is used to collect and store waste grease. In this embodiment, a plastic hose is adopted. The waste grease collection unit includes a tee joint 2. One interface of the tee joint 2 is used to connect with the grease discharge port 11 of the bearing, and the other two interfaces are respectively used to connect the waste grease collection pipes 3. The waste grease collection pipes 3 are connected between any two adjacent tee joints 2; exhaust small holes 4 are provided on the waste grease collection pipes 3. By providing the exhaust small holes 4 on the waste grease collection pipes 3, when collecting waste grease, when the waste grease enters the waste grease collection pipes 3 and squeezes the air in the pipes, the air in the pipes can gradually be discharged along the exhaust small holes 4, so that the waste grease will not be blocked due to pressure buildup and prevent the waste grease from filling the waste grease collection pipes 3. This simple modification will not cause major changes to the original scheme, but 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 buildup, it will greatly affect the effect of waste grease collection. The improvement of this application ensures that there is no longer pressure buildup, and the waste grease will flow more smoothly.

[0047] Meanwhile, in order to prevent the waste grease from overflowing and polluting the environment when the waste grease collection pipes 3 are filled with waste grease, a circular oil-absorbing sealing body 5 made of oil-absorbing expansion material is embedded at the exhaust small holes 4. In this embodiment, oil-absorbing expanded rubber is adopted. The oil-absorbing sealing body 5 is usually in the first working state, as Figure 2 shown. At this time, the waste grease collection pipes 3 are not yet filled with waste grease, and the air in the pipes can smoothly pass through between the oil-absorbing sealing bodies 5 and be discharged outside the pipes. When the waste grease is collected, that is, when the waste grease collection pipes 3 are filled with waste grease, as Figure 3 shown, the base oil in the waste grease contacts the oil-absorbing sealing body 5, and the oil-loving components in the oil-absorbing sealing body 5 contact the oil. The oil molecules enter the rubber interior through physical actions such as diffusion, capillarity, and surface adsorption. These oil molecules form a very strong binding force with the oil-loving functional groups in the rubber, causing the rubber to expand, thereby closing the exhaust small holes 4, that is, the oil-absorbing sealing body 5 is in the second working state of blocking the exhaust small holes 4. At this time, the waste grease in the waste grease collection pipes 3 cannot be discharged from the exhaust small holes 4. Even if the rotation of the pitch bearing generates a centrifugal force on the waste grease, the waste grease cannot break through the blockage of the oil-absorbing sealing body 5 and be thrown out, thus effectively avoiding the problem of waste grease being thrown out and polluting the environment.

[0048] In other embodiments, in order to realize the reuse of the waste grease collection pipes 3, the oil-absorbing sealing body 5 and the inner wall of the exhaust small holes 4 can also be detachably connected, so that the oil-absorbing sealing body 5 can be replaced, thereby enabling the waste grease collection pipes 3 to be reused.

[0049] The exhaust small hole 4 is arranged in the middle of the waste grease collection pipe 3. Since the waste grease enters the waste grease collection pipe 3 synchronously from both ends of the waste grease collection pipe 3, the middle part of the waste grease collection pipe 3 is the last area to be filled. By setting the exhaust small hole 4 here, the air in the pipe can be exhausted more thoroughly, and more waste grease can be filled in the pipe. The exhaust small hole 4 is located in the upper part of the waste grease collection pipe 3. Due to the characteristic that gas rises, setting it in the upper part can ensure that the gas is exhausted more thoroughly. Especially for the air wrapped in the waste grease, when the bubbles burst and overflow during the movement of the waste grease with the waste grease, it can also be smoothly discharged from the upper exhaust small hole 4, so that the waste grease collection pipe 3 can be filled more fully.

[0050] In other embodiments, there are multiple exhaust small holes 4, which can be distributed along the length direction of the waste grease collection pipe 3 to increase the exhaust efficiency and avoid the problem that due to the premature blockage of the exhaust small hole 4 in a too long waste grease collection pipe 3, a part of the gas in the pipe cannot be discharged in time.

[0051] Compared with the prior art, the setting of the exhaust small hole 4 enables the air originally existing in the waste grease collection pipe 3 and the tee joint 2 to be squeezed out by the collected waste grease. Moreover, when the waste grease is collected full, the waste grease contacts the oil absorption sealing body 5 at the exhaust small hole 4, and the base oil in the waste grease is adsorbed by the oil absorption sealing body 5, causing the volume of the oil absorption sealing body 5 to expand, thereby sealing the exhaust small hole and preventing the collected full waste grease from flowing out from the exhaust small hole 4. It can be seen that through simple structural improvement, this application solves both the problem of exhausting the waste grease collection pipe 3 and the problem of the waste grease flowing out from the exhaust small hole 4 after being collected full, and its cost is low, which can be used not only for new products but also for the transformation of old products.

[0052] Embodiment 2 of the anti-splashing waste grease collection system of the present utility model: As Figure 4 shown, the difference from Embodiment 1 is that 1 - 2 exhaust small holes 4 are also arranged on the tee joint 2, and an oil absorption sealing body 5 is also arranged at each exhaust small hole 4, so as to ensure that the air in the tee joint 2 can be exhausted in time. And the exhaust channel corresponding to the exhaust small hole 4 is an L-shaped channel 21. The design of the L-shaped channel 21 will not affect the exhaust of gas, but will increase the resistance and difficulty of the waste grease flowing out, achieving the effect of being breathable but not allowing grease to pass through.

[0053] In other embodiments, an exhaust hoop is arranged on the waste grease collection pipe 3 corresponding to the exhaust small hole 4, and a gas channel communicating inside and outside is arranged on the exhaust hoop. The inner port of the gas channel is communicated with the exhaust small hole 4, and the oil absorption sealing body 5 is arranged in the gas channel or the exhaust small hole 4. The arrangement of the exhaust hoop 4 and the gas channel therein can increase the length of the exhaust path, which does not affect the exhaust of gas, but can limit the outflow of the 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 small hole 4 due to centrifugal force.

[0054] In other embodiments, a tile-shaped protective block is pasted on the waste grease collection pipe 3 corresponding to the exhaust small holes 4. The protective block is provided with a gas passage communicating inside and outside. The inner port of the gas passage communicates with the exhaust small holes 4, and the oil absorption sealing body 5 is arranged in the gas passage or the exhaust small holes 4. Compared with the structure of the exhaust hoop, the tile-shaped structure is simpler and has lower cost.

[0055] Specific embodiments of the pitch bearing system of the present invention: The pitch bearing system includes a 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-throwing oil waste grease collection system and will not be described in detail.

[0056] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention by the same token.

Claims

1. Anti-splash waste grease collection system, comprising: Waste grease collection pipe, used for collecting and storing waste grease; Waste grease collection unit, including a tee joint, one interface of the tee joint is used to connect with the grease discharge port of the bearing, and the other two interfaces are respectively used to connect with the waste grease collection pipe; The waste grease collection pipe is connected between any two adjacent tee joints; It is characterized in that exhaust small holes are provided on the waste grease collection pipe and / or the tee joint, and an oil absorption sealing body made of oil absorption expansion material is arranged at the exhaust small holes. The oil absorption sealing body has a first working state in which the exhaust small holes are opened when not in contact with the waste grease, and a second working state in which it can expand and block the exhaust small holes when in contact with the waste grease.

2. The anti-splashing waste grease collection system according to claim 1, characterized in that The oil absorption sealing body is circular.

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

4. The anti-splashing waste grease collection system according to claim 1, characterized in that, The oil absorption sealing body is detachably installed on the side wall of the exhaust small hole.

5. The waste fat collection system for preventing oil splashing according to claim 1, characterized in that The exhaust small hole is arranged in the middle of the waste grease collection pipe.

6. The anti-splashing waste grease collection system according to claim 1, wherein The exhaust small hole is located in the upper part of the waste grease collection pipe.

7. The anti-splashing waste grease collection system according to claim 1, characterized in that, The exhaust passage corresponding to the exhaust small hole is an L-shaped passage.

8. The anti-splashing waste grease collection system according to claim 1, characterized in that The exhaust small hole is arranged on the waste grease collection pipe, and an exhaust hoop is arranged on the waste grease collection pipe corresponding to the exhaust small hole. The exhaust hoop is provided with a gas passage communicating inside and outside, and the inner port of the gas passage is communicated with the exhaust small hole.

9. The waste grease collection system for preventing oil splashing according to claim 1, characterized in that, The exhaust small hole is arranged on the waste grease collection pipe, and a tile-shaped protection block is pasted on the waste grease collection pipe corresponding to the exhaust small hole. The protection block is provided with a gas passage communicating inside and outside, and the inner port of the gas passage is communicated with the exhaust small hole.

10. Pitch bearing system, characterized in that, Comprising a pitch bearing and the anti-splash waste grease collection system according to any one of claims 1-9, and the anti-splash waste grease collection system is installed on the pitch bearing.

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