Main shaft sealing device for crusher

Abstract

The main shaft sealing device comprises a crusher shell, a shaft hole is formed in the crusher shell, a main shaft is rotationally installed in the shaft hole, a sealing shaft sleeve is installed on the main shaft, a sealing ring cover is arranged on the outer side of the sealing shaft sleeve, and a sealing check ring is arranged between the sealing ring cover and the crusher shell. A sealing groove is formed among the sealing shaft sleeve, the sealing ring cover and the sealing check ring, sealing rubber rings are arranged on the two sides in the sealing groove, and an oil filling hole communicated with the sealing groove is formed in the sealing ring cover. According to the utility model, the sealing shaft sleeve, the sealing ring cover, the sealing check ring and the sealing rubber ring are matched with one another, so that the problems that dust flows out of the interior of the crusher shell through a gap between the main shaft and the crusher shell, the working environment is polluted, and the operation of equipment is influenced due to the damage of a main shaft bearing are effectively avoided; a good working environment is provided, the equipment maintenance amount is reduced, and the device is stable and reliable in operation, low in failure rate and long in service life, and has very high social and economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of crusher machinery, in particular to a main shaft sealing device for a crusher. Background Art

[0002] Crusher is a kind of crushing machine suitable for raw materials in metallurgy, construction, road construction, chemical and silicate industries. It is divided into many models according to different crushing principles and different product particle sizes. Crusher is widely used in many departments such as mining, smelting, building materials, highways, railways, water conservancy and chemical industries. Cone crusher has large crushing ratio, high efficiency, low energy consumption, and uniform product particle size. It is suitable for medium and fine crushing of various ores and rocks.

[0003] In the existing technology, the crusher crushes the material through the tooth plates of a pair of tooth rollers on the main shaft. A large amount of dust is generated during the crushing process. The dust will flow out of the crusher shell through the gap between the main shaft and the crusher shell, causing pollution to the working environment. The dust will also enter the bearing chamber of the main shaft, often causing the bearing to heat up and be damaged, seriously affecting the safe and stable operation of the equipment.

[0004] Therefore, the applicant proposes a main shaft sealing device for a crusher to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a main shaft sealing device for a crusher.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A main shaft sealing device for a crusher comprises a crusher housing, an axial hole being formed on the crusher housing, a main shaft being rotatably mounted in the axial hole, a sealing sleeve being mounted on the main shaft, a sealing ring cover being provided on the outer side of the sealing sleeve, a sealing retaining ring being provided between the sealing ring cover and the crusher housing, a sealing groove being formed between the sealing sleeve, the sealing ring cover and the sealing retaining ring, sealing rubber rings being provided on both sides of the sealing groove, and a fuel filling hole being provided on the sealing ring cover and communicating with the sealing groove.

[0008] Furthermore, an upper limit plate is installed on the crusher shell above the sealing ring cover, and an upper limit slide is provided on the side of the upper limit plate close to the sealing ring cover. A lower limit plate is installed on the crusher shell below the sealing ring cover, and a lower limit slide is provided on the side of the lower limit plate close to the sealing ring cover. Slide plates are provided on both sides of the sealing ring cover, and the two slide plates are slidably matched with the upper limit slide and the lower limit slide respectively.

[0009] Furthermore, a sealing spacer is provided between the two sealing rubber rings.

[0010] Furthermore, a sealing strip is installed between the slide plate and the crusher housing.

[0011] Furthermore, the sealing sleeve and the main shaft are in interference fit.

[0012] Furthermore, a dust-blocking groove is provided on one side of the sealing sleeve close to the interior of the crusher housing.

[0013] Furthermore, the cross section of the dust blocking groove is in the shape of a right triangle, and the angle between the hypotenuse of the dust blocking groove and the horizontal straight line side is 45°-75°.

[0014] Furthermore, the upper limit plate and the lower limit plate are both connected to the crusher casing via fixing bolts.

[0015] Compared with the prior art, the present invention provides a main shaft sealing device for a crusher, which has the following features:

[0016] Beneficial effects:

[0017] 1. The utility model adds grease through the oil filling hole, and the grease flows into the sealing rubber ring, which plays the role of air sealing. The sealing rubber ring seals the gap between it and the sealing sleeve, and the sealing retaining ring blocks the dust inside the crusher shell from directly flowing to the sealing rubber ring. The sealing sleeve is used to protect the main shaft from wear and tear, thereby improving the service life of the main shaft. The utility model effectively avoids the problem that dust will flow out of the crusher shell through the gap between the main shaft and the crusher shell through the mutual cooperation of the sealing sleeve, the sealing ring cover, the sealing retaining ring and the sealing rubber ring, thereby polluting the working environment and damaging the main shaft bearing to affect the operation of the equipment. The utility model has good sealing effect, provides a good working environment, reduces the amount of equipment maintenance, and the device runs stably and reliably with a low failure rate and a long service life, with high social and economic benefits.

[0018] 2. The utility model enables the main shaft to slide horizontally in the upper limit chute and the lower limit chute through the slide of the sealing ring cover through the mutual cooperation of the upper limit plate, the upper limit slide, the lower limit plate, the lower limit slide and the slide plate, so that the main shaft of the crusher can be adjusted within a certain range during assembly. Because if the tooth plate of the tooth roller on the main shaft of the crusher is worn, the center distance of the main shaft can be adjusted through horizontal adjustment to ensure the tooth meshing clearance of the tooth plate; or when encountering hard materials, the tooth roller can retreat to avoid damage to the tooth plate caused by the hard material, so the main shaft needs to slide horizontally within a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2It is a schematic diagram of the cross-sectional structure of the sealing sleeve of the utility model.

[0021] Markings in the figure: 1. Crusher housing; 2. Shaft hole; 3. Main shaft; 4. Sealing sleeve; 5. Sealing ring cover; 6. Sealing retaining ring; 7. Sealing groove; 8. Sealing rubber ring; 9. Upper limit plate; 10. Upper limit slide; 11. Lower limit plate; 12. Lower limit slide; 13. Slide plate; 14. Sealing spacer; 15. Sealing strip; 16. Dust shield groove; 17. Oil filling hole; 18. Fixing bolt. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0024] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0027] The present invention provides a main shaft sealing device for a crusher. Figure 1 and Figure 2, including a crusher shell 1, an axial hole 2 is opened on the crusher shell 1, a main shaft 3 is rotatably installed in the axial hole 2, a sealing sleeve 4 is installed on the main shaft 3, a sealing ring cover 5 is provided on the outside of the sealing sleeve 4, a sealing retaining ring 6 is provided between the sealing ring cover 5 and the crusher shell 1, a sealing groove 7 is formed between the sealing sleeve 4, the sealing ring cover 5 and the sealing retaining ring 6, sealing rubber rings 8 are provided on both sides of the sealing groove 7, and a refueling hole 17 connected with the sealing groove 7 is opened on the sealing ring cover 5.

[0028] Specifically, the main shaft 3 is protected by the sealing sleeve 4 to prevent the main shaft 3 from wearing, thereby increasing the service life of the main shaft 3; the sealing ring cover 5 is located outside the crusher housing 1, one end of the sealing ring cover 5 contacts the outer side of the sealing sleeve 4, and the other end of the sealing ring cover 5 contacts the sealing retaining ring 6; the sealing retaining ring 6 also seals the gap between the inner side of the shaft hole 2 and the sealing sleeve 4, blocking the dust inside the crusher housing 1 from flowing directly to the sealing rubber ring 8; the sealing rubber ring 8 seals the gap between it and the sealing sleeve 4; grease is added through the oil filling hole 17, and the grease flows into the sealing rubber ring 8 to play the role of airtightness; the sealing rubber ring 8 can adopt a rotating shaft lip seal, which is an existing device and will not be described in detail here.

[0029] Among them, reference Figure 1 In this embodiment, a sealing spacer 14 is provided between the two sealing rubber rings 8 .

[0030] Specifically, the sealing spacer 14 is provided to prevent the sealing rubber ring 8 from blocking the oil filling hole 17 when installed. The grease flows from the oil filling hole 17 into the sealing groove 7 and flows into the sealing rubber rings 8 on both sides under the action of the sealing spacer 14.

[0031] Reference Figure 1 In this embodiment, the sealing sleeve 4 and the main shaft 3 are in interference fit.

[0032] Specifically, during operation, the sealing sleeve 4 rotates together with the main shaft 3 , while the sealing ring cover 5 , the sealing retaining ring 6 , the sealing rubber ring 8 and the sealing spacer 14 do not rotate along with the main shaft 3 .

[0033] Reference Figure 1 and Figure 2 In this embodiment, a dust blocking groove 16 is provided on one side of the sealing sleeve 4 close to the inside of the crusher housing 1 to block dust and protect the main shaft 3 from wear.

[0034] Reference Figure 1 and Figure 2In this embodiment, the cross-section of the dust blocking groove 16 is a right-angled triangle ring, and the angle between the hypotenuse of the dust blocking groove 16 and the horizontal straight line edge is 45°-75°. Preferably, the angle between the hypotenuse of the dust blocking groove 16 and the horizontal straight line edge is 60°.

[0035] Reference Figure 1 In this embodiment, an upper limit plate 9 is installed on the crusher shell 1 above the sealing ring cover 5, and an upper limit slide groove 10 is provided on the side of the upper limit plate 9 close to the sealing ring cover 5. A lower limit plate 11 is installed on the crusher shell 1 below the sealing ring cover 5, and a lower limit slide groove 12 is provided on the side of the lower limit plate 11 close to the sealing ring cover 5. Slide plates 13 are provided on both sides of the sealing ring cover 5, and the two slide plates 13 slide with the upper limit slide groove 10 and the lower limit slide groove 12 respectively.

[0036] Specifically, through the mutual cooperation of the upper limit plate 9, the upper limit chute 10, the lower limit plate 11, the lower limit chute 12 and the slide plate 13, the main shaft 3 can slide horizontally in the upper limit chute 10 and the lower limit chute 12 through the slide plate 13 of the sealing ring cover 5, so that the main shaft 3 of the crusher can be adjusted within a certain range during assembly. Because if the tooth plate of the tooth roller on the main shaft 3 of the crusher is worn, the center distance of the main shaft 3 can be adjusted by horizontal adjustment to ensure the tooth meshing clearance of the tooth plate; or when encountering hard materials, the tooth roller can retreat. In order to avoid damage to the tooth plate caused by hard materials, the main shaft 3 needs to slide horizontally within a certain range; two slides 13 are provided on the upper and lower sides of the sealing ring cover 5, and the sealing ring cover 5 and the two slides 13 can be formed as one piece; the maximum horizontal left and right sliding distance of the main shaft 3 is 40 mm (that is, the position of the main shaft 3 can be adjusted within this range during assembly); there is a certain gap between the top of the upper limit slide groove 10 and the slide 13, so that the main shaft 3 can also move upward for a distance. The main shaft 3 moves upward in order to replace the bearings in the bearing seat during maintenance, and the gear roller needs to be lifted.

[0037] Among them, reference Figure 1 In this embodiment, a sealing strip 15 is installed between the slide plate 13 and the crusher housing 1.

[0038] Specifically, the sealing strip 15 is a sealing rubber strip, which is elastic and can eliminate the gap between the contact surfaces after being compressed to achieve a sealing effect.

[0039] Reference Figure 1 In this embodiment, the upper limit plate 9 and the lower limit plate 11 are connected to the crusher housing 1 through fixing bolts 18, and the fixing bolts 18 facilitate the installation of the upper limit plate 9 and the lower limit plate 11.

[0040] To sum up, the utility model adds grease through the refueling hole 17, and the grease flows into the sealing rubber ring 8, which plays the role of air sealing. The sealing rubber ring 8 seals the gap between it and the sealing sleeve 4, and the sealing retaining ring 6 blocks the dust inside the crusher shell 1 from flowing directly to the sealing rubber ring 8. The sealing sleeve 4 is used to protect the main shaft 3 from wear, thereby improving the service life of the main shaft 3. The utility model effectively avoids the problem that dust will flow out of the crusher shell 1 through the gap between the main shaft 3 and the crusher shell 1 through the mutual cooperation of the sealing sleeve 4, the sealing ring cover 5, the sealing retaining ring 6 and the sealing rubber ring 8, thereby polluting the working environment and damaging the main shaft 3 bearing so as to affect the operation of the equipment. The sealing effect is good, a good working environment is provided, and the amount of equipment maintenance is reduced. The device operates stably and reliably, has a low failure rate, a long service life, and has high social and economic benefits.

[0041] The utility model cooperates with the upper limit plate 9, the upper limit slide 10, the lower limit plate 11, the lower limit slide 12 and the slide plate 13, so that the main shaft 3 can slide horizontally in the upper limit slide 10 and the lower limit slide 12 through the slide plate 13 of the sealing ring cover 5, so that the main shaft 3 of the crusher can be adjusted to a certain range during assembly. Because if the tooth plate of the tooth roller on the main shaft 3 of the crusher is worn, the center distance of the main shaft 3 can be adjusted horizontally to ensure the tooth meshing clearance of the tooth plate; or when encountering hard materials, the tooth roller can retreat to avoid damage to the tooth plate caused by the hard material, so the main shaft 3 needs to slide horizontally within a certain range.

[0042] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A main shaft sealing device for a crusher, comprising a crusher housing (1), characterized in that: The crusher housing (1) is provided with an axial hole (2), a main shaft (3) is rotatably mounted in the axial hole (2), a sealing sleeve (4) is mounted on the main shaft (3), a sealing ring cover (5) is provided on the outer side of the sealing sleeve (4), a sealing retaining ring (6) is provided between the sealing ring cover (5) and the crusher housing (1), a sealing groove (7) is formed between the sealing sleeve (4), the sealing ring cover (5) and the sealing retaining ring (6), sealing rubber rings (8) are provided on both sides of the sealing groove (7), and a refueling hole (17) is provided on the sealing ring cover (5) and is communicated with the sealing groove (7).

2. The main shaft sealing device for a crusher according to claim 1, characterized in that: An upper limit plate (9) is installed on the crusher housing (1) above the sealing ring cover (5), and an upper limit slide groove (10) is provided on the side of the upper limit plate (9) close to the sealing ring cover (5). A lower limit plate (11) is installed on the crusher housing (1) below the sealing ring cover (5), and a lower limit slide groove (12) is provided on the side of the lower limit plate (11) close to the sealing ring cover (5). Slide plates (13) are provided on both sides of the sealing ring cover (5), and the two slide plates (13) are slidably matched with the upper limit slide groove (10) and the lower limit slide groove (12) respectively.

3. The main shaft sealing device for a crusher according to claim 1, characterized in that: A sealing spacer (14) is provided between the two sealing rubber rings (8).

4. The main shaft sealing device for a crusher according to claim 2, characterized in that: A sealing strip (15) is installed between the slide plate (13) and the crusher housing (1).

5. The main shaft sealing device for a crusher according to claim 1, characterized in that: The sealing sleeve (4) and the main shaft (3) are in interference fit.

6. The main shaft sealing device for a crusher according to claim 5, characterized in that: A dust blocking groove (16) is provided on one side of the sealing sleeve (4) close to the interior of the crusher housing (1).

7. The main shaft sealing device for a crusher according to claim 6, characterized in that: The cross section of the dust blocking groove (16) is in the shape of a right triangle, and the angle between the hypotenuse and the horizontal straight line of the dust blocking groove (16) is 45°-75°.

8. The main shaft sealing device for a crusher according to claim 2, characterized in that: The upper limit plate (9) and the lower limit plate (11) are both connected to the crusher housing (1) via fixing bolts (18).

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