Novel rotary kiln gear structure

Abstract

The utility model relates to the field of rotary kilns, in particular to a novel rotary kiln gear structure which comprises a large gear and a small gear which are meshed with each other, gear covers are sleeved outside the large gear and the small gear, an oil pool is arranged below the small gear, a bottom plate is arranged at the bottom of the gear covers and located below the large gear, and a bottom plate oil scraping mechanism is arranged on the bottom plate. And at least one gear oil scraping mechanism is arranged on the gear cover. Redundant lubricating oil is scraped to the bottom plate through the gear oil scraping mechanism, the redundant lubricating oil is fed into an oil pool through the bottom plate oil scraping mechanism, the problem that the lubricating oil is accumulated on the bottom plate is effectively solved, the lubricating oil is prevented from deteriorating due to the fact that the lubricating oil is accumulated on the bottom plate for a long time, the quality of the lubricating oil is guaranteed, and the service life of the lubricating oil is prolonged. And the operation stability of the rotary kiln is improved.

Description

Technical Field

[0001] The utility model relates to the field of rotary kilns, and particularly to a novel gear structure for a rotary kiln. Background Art

[0002] During the operation of a rotary kiln, the large gear needs to be driven by a small gear to rotate. A gear cover is sleeved outside the large gear and the small gear. An oil sump is arranged below the small gear. Lubricating oil is required for the meshing between the large gear and the small gear. When the large gear rotates, the lubricating oil splashes from the large gear onto the bottom plate of the gear cover. Usually, the bottom plate is set to be inclined. However, due to the strong viscosity of the lubricating oil, it often adheres to the bottom plate. Over time, the lubricating oil will deteriorate, and the deteriorated lubricating oil will flow into the oil sump and mix with the normal lubricating oil, affecting the lubrication effect between the large gear and the small gear. Therefore, there is an urgent need for a novel gear structure for a rotary kiln to solve the problem of the accumulation of lubricating oil on the bottom plate, maintain the stable quality of the lubricating oil, and ensure the stable operation of the rotary kiln. Summary of the Utility Model

[0003] Aiming at the deficiencies in the background art, the utility model provides a novel gear structure for a rotary kiln, which can solve the problem of the accumulation of lubricating oil on the bottom plate of the gear cover of the rotary kiln, maintain the stable quality of the lubricating oil, and ensure the stable operation of the rotary kiln.

[0004] A novel gear structure for a rotary kiln, characterized in that: it includes a large gear and a small gear that mesh with each other. Gear covers are sleeved outside both the large gear and the small gear. An oil sump is arranged below the small gear. A bottom plate is arranged at the bottom of the gear cover and below the large gear. A bottom plate oil scraping mechanism is arranged on the bottom plate, and at least one gear oil scraping mechanism is arranged on the gear cover.

[0005] Preferably, the height of one side of the bottom plate close to the oil sump is lower than that of the other side.

[0006] Preferably, the bottom plate oil scraping mechanism includes two transmission shafts rotatably connected to the gear cover and at least one oil scraping plate. Two sprockets are sleeved at both ends of each transmission shaft. Chains are sleeved on two sprockets on the same side. Each oil scraping plate is arranged on the two chains. One of the transmission shafts is connected with a driving motor.

[0007] Preferably, each oil scraping plate is movably connected to the two chains through L-shaped connectors at both ends. When scraping oil, one end of the oil scraping plate abuts against the bottom plate.

[0008] Preferably, the large gear is inclined relative to the horizontal ground. A first oil retaining ring and a second oil retaining ring are arranged on the large gear along the distribution direction of the tooth grooves on the gear. The first oil retaining ring is arranged on the side of the large gear close to the horizontal ground.

[0009] Preferably, a first sealing ring is provided on the gear cover along the side of the first oil baffle ring close to the center of the large gear, and a second sealing ring is provided on the gear cover along the side of the second oil baffle ring away from the center of the large gear.

[0010] Preferably, an annular groove is formed between the first oil baffle ring and the outer wall of the large gear.

[0011] Preferably, the gear oil scraping mechanism includes a support rod provided on the gear cover. Bases are provided at both ends of the support rod. Springs are provided in each base. Each spring is connected to a connecting rod, and each connecting rod is movably connected to an oil scraping blade.

[0012] Preferably, an observation port is provided on one side of the oil sump, and the opening of the observation port faces upward.

[0013] Preferably, the small gear is connected to a small gear rotating shaft, and semi-circular oil baffle rings are provided above the small gear rotating shaft on both sides of the gear cover.

[0014] Advantages

[0015] (1) The utility model uses the oil scraping mechanism on the bottom plate to scrape the lubricating oil splashed and falling onto the bottom plate into the oil sump, reducing the waste of lubricating oil, effectively preventing the situation of lubricating oil deterioration caused by the accumulation of lubricating oil on the bottom plate, enabling the large gear and the small gear to have lubricating oil with stable quality, and ensuring the normal operation of the rotary kiln.

[0016] (2) The utility model is provided with an oil scraping mechanism on the gear cover. The oil scraping mechanism can scrape the excess lubricating oil on the gear onto the bottom plate, reducing the splashing of lubricating oil, effectively reducing the loss of lubricating oil. At the same time, reducing the splashing of lubricating oil can also prevent oil leakage on the gear cover due to excessive splashing of lubricating oil. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic structural diagram of the bottom plate oil scraping mechanism in the utility model;

[0019] Figure 3 is a side view of the bottom plate oil scraping mechanism in the utility model;

[0020] Figure 4 is Figure 1 a cross-sectional view taken along line A-A in

[0021] Figure 5 is a cross-sectional view of the small gear in the utility model;

[0022] Figure 6 is a side view of the oil separation ring in the utility model;

[0023] In the figure: 1, gear cover; 2, large gear; 3, small gear; 4, oil sump; 5, gear oil scraping mechanism; 6, bottom plate oil scraping mechanism; 7, maintenance opening; 8, maintenance cover plate; 9, observation opening; 10, bottom plate; 11, sprocket; 12, oil scraping plate; 13, chain; 14, drive motor; 15, transmission shaft; 16, L-shaped connecting piece; 17, support rod; 18, base; 19, connecting rod; 20, oil scraping blade; 21, first oil retaining ring; 22, second oil retaining ring; 23, annular groove; 24, first sealing ring; 25, second sealing ring; 26, installation groove; 27, semi-circular flange; 28, semi-circular rubber sheet; 29, oil separating ring; 30, small gear. Specific embodiments

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0026] In the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Such as Figures 1-4As shown in the figure, a new type of rotary kiln gear structure includes a large gear 2 and a small gear 3 that mesh with each other. Gear covers 1 are sleeved outside both the large gear and the small gear. An oil sump 4 is provided below the small gear. A bottom plate 10 is provided at the bottom of the gear cover and below the large gear. A bottom plate oil scraping mechanism 6 is provided on the bottom plate. At least one gear oil scraping mechanism 5 is provided on the gear cover. The height of the bottom plate near the oil sump is lower than that of the other side. The lubricating oil plays a lubricating role between the large gear and the small gear. One end of the small gear near the horizontal side is immersed in the oil sump. When the small gear rotates, it brings the lubricating oil to the large gear. When the large gear rotates, the excess lubricating oil on the large gear is likely to splash. The gear oil scraping mechanism on the gear cover can scrape the excess lubricating oil onto the bottom plate. Part of the lubricating oil on the bottom plate can flow into the oil sump for recycling by the inclined setting of the bottom plate. Due to the large viscosity of the lubricating oil, some lubricating oil will stick to the bottom plate. The bottom plate oil scraping mechanism can scrape this part of the lubricating oil into the oil sump to prevent the lubricating oil from sticking to the bottom plate for too long, resulting in the deterioration of the lubricating oil and affecting the lubrication effect.

[0028] The bottom plate oil scraping mechanism includes two drive shafts 15 rotatably connected to the gear cover and at least one oil scraping plate 12. Two sprockets 11 are sleeved at both ends of each drive shaft. Two chains 13 are sleeved on the two sprockets on the same side. Each oil scraping plate is provided on the two chains. One of the drive shafts is connected to a drive motor 14. The drive motor drives the drive shaft to rotate. The drive shaft drives the movement of the two chains through the cooperation of the sprockets and the chains. The oil scraping plates on the chains move with the two chains. When the oil scraping plate moves above the bottom plate, the end of the oil scraping plate close to the bottom plate abuts against the bottom plate, so as to scrape the lubricating oil sticking to the bottom plate into the oil sump.

[0029] Each oil scraping plate is movably connected to the two chains through L-shaped connectors 16 at both ends. The oil scraping plate is made of rubber. After long-term oil scraping work, the oil scraping plate will be worn, which will affect the oil scraping effect. The connection method of the L-shaped connector with the chain and the oil scraping plate is a detachable connection. The L-shaped connector is detachably connected to the connector and the oil scraping plate through bolts respectively. By opening the two bolts, the oil scraping plate can be replaced to ensure the normal operation of the bottom plate oil scraping mechanism.

[0030] The large gear is inclined relative to the horizontal ground. The large gear is provided with a first oil baffle ring 21 and a second oil baffle ring 22 along the distribution direction of the tooth grooves on the gear. The first oil baffle ring is arranged on the side of the large gear close to the horizontal ground. The large gear and the small gear of the rotary kiln are inclined. On the side of the large gear farther from the ground, due to the inclined setting, there is no oil leakage phenomenon under the action of gravity. On the side of the large gear closer to the ground, under the action of gravity, there will be an oil leakage phenomenon. The first oil baffle ring and the outer wall of the large gear form an annular groove 23. The annular groove is arranged along the distribution direction of the large gear. The bottom of the annular groove is flush with the bottom of the tooth groove of the large gear. The lubricating oil can flow from the tooth groove of the large gear into the annular groove. The side of the annular groove can block the lubricating oil to prevent the lubricating oil from splashing.

[0031] On the side of the gear cover close to the center of the large gear along the first oil baffle ring, a first sealing ring 24 is provided. On the side of the gear cover far from the center of the large gear along the second oil baffle ring, a second sealing ring 25 is provided. The large gear is inclined along the Figure 4 arrow direction in the figure. The height of the gear cover on the side of the first sealing ring is less than the height of the gear cover on the side of the second sealing ring. This can save material costs. Installation grooves 26 are provided on both sides of the gear cover. The opening directions of the two installation grooves are opposite. The first sealing ring and the second sealing ring are installed in the corresponding installation grooves. The connection method between the first sealing ring and the second sealing ring and the corresponding installation grooves is a movable connection. The sealing rings will age after long-term use, and the sealing rings need to be replaced regularly to ensure the sealing performance of the gear cover.

[0032] The gear oil scraping mechanism includes a support rod arranged on the gear cover. Bases are provided at both ends of the support rod. Springs are arranged in the bases. Each spring is connected with a connecting rod. Each connecting rod is movably connected with an oil scraping blade. The two oil scraping blades are respectively in contact with the sides of the first oil baffle ring and the second oil baffle ring far from the center of the large gear. The oil scraping blades can scrape off the excess lubricating oil on the first oil baffle ring and the second oil baffle ring. The lubricating oil will fall onto the bottom plate under the action of gravity. The bottom plate oil scraping mechanism on the bottom plate will then scrape the excess lubricating oil into the oil sump.

[0033] On one side of the oil sump, an observation port 9 is provided. The opening of the observation port faces upward. The observation port is inclined relative to the oil sump. The height of the lubricating oil in the oil sump can be observed through the observation port. When the lubricating oil is insufficient, lubricating oil can be added into the oil sump through the observation port. The inclined observation port is not easy to leak oil, and the lubricating oil splashed by the rotation of the small gear will also be blocked by the side wall of the observation port.

[0034] As Figures 5-6As shown in the figure, semi-circular oil baffle rings are provided above the pinion shaft 30 on both sides of the gear cover. The semi-circular oil baffle rings include a semi-circular flange 27 and a semi-circular rubber sheet 28. The semi-circular flange is fixedly connected to the gear cover, and the semi-circular oil baffle ring and the semi-circular rubber sheet are detachably connected, which is convenient for regularly replacing the semi-circular rubber sheet. An oil separation ring 29 is provided along the pinion shaft below the semi-circular oil baffle ring. The oil separation ring effectively prevents the lubricating oil on the pinion shaft from splashing out of the gear cover. Sealing structures are provided on both sides of the pinion.

[0035] Working principle

[0036] When the rotary kiln is running, the pinion drives the large gear to rotate. Lubricating oil is required when the large gear and the pinion cooperate with each other. The pinion picks up the lubricating oil in the oil sump and brings the lubricating oil to the large gear. The excess lubricating oil on the large gear will splash due to the rotation of the large gear. The excess lubricating oil is scraped off onto the bottom plate through the cooperation of the oil scraping mechanism provided on the gear cover and the first and second oil baffle rings on the large gear. The bottom plate oil scraping mechanism on the bottom plate then scrapes the excess lubricating oil into the oil sump to achieve the recycling of the lubricating oil.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A new type of rotary kiln gear structure, characterized by: It includes a large gear and a small gear that mesh with each other. The large gear and the small gear are both covered with gear covers. An oil pool is provided under the small gear. The bottom of the gear cover is located below the large gear and a bottom plate is provided. The bottom plate is provided with a bottom plate oil scraping mechanism. The gear cover is provided with at least one gear oil scraping mechanism.

2. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: The height of the bottom plate on one side close to the oil pool is lower than that on the other side.

3. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: The bottom plate oil scraper mechanism includes two transmission shafts rotatably connected to the gear cover and at least one oil scraper plate, two sprockets are sleeved at both ends of each transmission shaft, chains are sleeved on the two sprockets on the same side, each oil scraper plate is arranged on two chains, and one of the transmission shafts is connected to a driving motor.

4. A novel rotary kiln gear structure as claimed in claim 3, characterized in that: Each of the oil scraping plates is movably connected via L-shaped connectors at both ends and two chains, and one end of the oil scraping plate contacts the bottom plate when the oil scraping plate is scraping oil.

5. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: The large gear is tilted relative to the horizontal ground. The large gear is provided with a first oil deflector ring and a second oil deflector ring along the distribution direction of the tooth grooves on the gear. The first oil deflector ring is provided on the side of the large gear close to the horizontal ground.

6. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: A first sealing ring is provided on the gear cover along the side of the first oil deflector ring close to the center of the large gear, and a second sealing ring is provided on the gear cover along the side of the second oil deflector ring away from the center of the large gear.

7. A novel rotary kiln gear structure as claimed in claim 5, characterized in that: The first oil retaining ring and the outer wall of the large gear form an annular groove.

8. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: The gear oil scraping mechanism comprises a support rod arranged on the gear cover, bases are arranged at both ends of the support rod, a spring is arranged in each base, each spring is connected to a connecting rod, and each connecting rod is movably connected to an oil scraping blade.

9. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: An observation port is arranged on one side of the oil pool, and the observation port opens upward.

10. A novel rotary kiln gear structure as claimed in claim 1, characterized in that: The pinion is connected to a pinion shaft, and semicircular oil retaining rings are provided on both sides of the gear cover above the pinion shaft.

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