CN114950637A

CN114950637A - Side material blocking roller shaft

Info

Publication number: CN114950637A
Application number: CN202210659453.XA
Authority: CN
Inventors: 何亚民; 魏勇; 徐智平
Original assignee: Chengdu Leejun Industrial Co Ltd
Current assignee: Chengdu Leejun Industrial Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-08-30

Abstract

The invention discloses a side material blocking roller shaft, which relates to the technical field of roller presses and comprises a roller shaft body, wherein the end part of the roller shaft body is provided with a supporting part for limiting materials to pass through, the middle part of the roller shaft body is a roller pressing part, the supporting part protrudes out of the roller pressing part along the radial direction, the radial size difference between the supporting part and the roller pressing part is larger than the gap of a roller gap, and the end surface of one side of the supporting part corresponding to the roller pressing part is a material blocking surface for limiting the materials. According to the side material blocking roller shaft, the supporting part capable of limiting materials is arranged at the end part of the roller, so that the problems of poor structure and uneven stress of a conventional roller surface and a blocking ring are solved; a wear-resistant element is arranged on the material blocking surface of the supporting part, and the wear-resistant element can be replaced after being worn; the material cleaning device is arranged, so that materials attached to the roller surface are prevented from being brought into the space between the two rollers along with the rotation of the roller shaft to be extruded again, and the materials attached to the roller surface are prevented from increasing in density and enlarging a roller gap.

Description

Side material blocking roller shaft

Technical Field

The invention relates to the technical field of roller presses, in particular to a side material blocking roller shaft.

Background

In the production process of the traditional industries such as building material cement, metallurgical mine, chemical industry and the like, the grinding power consumption accounts for 60-70% of the total power consumption, the high energy consumption and the low efficiency are the old and difficult problems of the industries such as building material cement, metallurgical mine, chemical industry and the like, and the improvement of the economic benefit of enterprises and the large-scale production scale are seriously hindered.

Due to the change of the grinding mechanism, the roller press (or called high-pressure roller mill) and the system process technology thereof can reduce the power consumption of the grinding system by 20-60 percent and improve the yield by 25-200 percent, and are suitable for the capacity expansion transformation of newly built plants or old plants. With the development of grinding technology in recent years, a roller press (high-pressure roller mill) based on the material bed grinding principle is widely applied to the grinding field of cement clinker, cement raw materials, slag, steel slag, iron ore, chemical industry and the like, has an obvious energy-saving effect, is an ideal roller shaft supporting part for saving energy and reducing consumption, saves energy, reduces power consumption and realizes sustainable development. However, with the generalization of the application of the roller press (or called high pressure roller mill), the roller shaft of the squeeze roller of the conventional roller press (or called high pressure roller mill) has the following problems, as shown in fig. 1 to 3:

1. conventional roll surface + side dams (retained at the end faces of the roll shell). Because the side baffle is movably blocked on the end surface of the roller sleeve, the side baffle is kept away from and close to the end surface of the roller sleeve according to the stress when the side baffle receives the extrusion force of the material by the ejector rod and the disc spring or the spring to resist the action of the extrusion force of the material on the side baffle. In the process that the side baffle is far away from the end face of the roller sleeve, materials leak from the edge, so that the extrusion effect of the materials at the edge is poor, and the overall extrusion effect of the roller press (or called high-pressure roller mill) is influenced. The side baffle keeps off there is still a serious problem in the side just, and the side baffle does not rotate, and when the material passes through the roll squeezer (or called high-pressure roller mill), is equivalent to the side baffle is fixed, and the material is in the in-process of passing through the roll squeezer, and both sides material is the friction with the side baffle all the time, and like this, the side baffle just has a concentrated wearing area, and the life-span of side baffle is shorter relatively, needs often to change.

2. And (4) a conventional roll surface and a baffle ring (the baffle ring is fixedly connected to the side surface of the roll sleeve through a bolt). In the material extrusion process, because the baffle ring blocks the material to move towards the edge, material aggregation is formed at the joint of the baffle ring and the roller sleeve. The stress condition of the whole roller in the width direction is that the middle is small, the two ends are large, and the stress is very uneven and consistent. The retaining ring is far away from the end face of the roller sleeve after being stressed, a gap is formed between the retaining ring and the end face of the roller sleeve in the process of distance, small materials enter the gap, the more the materials are accumulated, a wedge principle is formed between the retaining ring and the side face of the roller sleeve, and finally the bolt is broken or the retaining ring is broken or the side face of the roller sleeve is damaged by pulling.

And (4) conventional roll surfaces and baffle rings (the baffle rings are clamped on the roll sleeve and fixedly connected to the side surface of the roll sleeve through bolts). In the material extrusion process, because the baffle ring blocks the material to move towards the edge, material aggregation is formed at the joint of the baffle ring and the roller sleeve. The stress condition of the whole roller in the width direction is that the middle is small, the two ends are large, and the stress is very uneven and consistent. The retaining ring has a tendency of moving towards the end face far away from the roller sleeve after being stressed, in the process, the retaining ring and the clamping groove of the roller sleeve are very stressed, the clamping groove of the roller sleeve close to the end face is easily broken, the clamping groove is broken to drive the bolt on the side face to be broken or the retaining ring to be broken, and the edge of the roller sleeve is damaged.

Disclosure of Invention

The invention aims to: aiming at the existing problems, the invention provides a side material blocking roller shaft, wherein a supporting part capable of limiting materials is arranged at the end part of a roller, so that the problems of poor structure and uneven stress are solved; a wear-resistant element is arranged on the material blocking surface of the supporting part, and the wear-resistant element can be replaced after being worn; the material cleaning device is arranged, so that materials attached to the surface of the roller are prevented from being brought into the space between the two rollers to be extruded again along with the rotation of the roller shaft, and the materials attached to the surface of the roller are prevented from increasing in density and enlarging the roller gap.

The technical scheme adopted by the invention is as follows:

the utility model provides a side keeps off material roller, includes the roller body, roller body end is equipped with the supporting part that the restriction material passes through, the middle part is the roll-in portion, the supporting part is along radially outstanding in roll-in portion, the radial size difference of supporting part and roll-in portion is greater than the clearance of roll gap, a side terminal surface that the supporting part corresponds with the roll-in portion is the fender material face of restriction material.

Furthermore, the roll-pressing part is of a cylindrical structure, and the pair of supporting parts and the roll-pressing part are matched with each other to form an inwards concave roll-pressing area.

Furthermore, a groove body used for balancing the pressure of the roller surface is arranged on the rolling portion, the groove body is of an annular structure surrounding the roller shaft body along the circumferential direction, and a transition curved surface or a transition inclined surface is formed between the groove body and the roller surface.

Further, the groove body is arranged at the end part and/or the middle part of the rolling part.

Further, still include wear-resisting component, wear-resisting component covers the fender material face at least.

Furthermore, the wear-resistant element comprises a working part directly contacted with the material and an assembling part connecting the working part to the supporting part, the assembling part is arranged at one end of the working part and at least matched with the circumferential curved surface of the supporting part, and a plurality of assembling holes matched with the connecting piece are formed in the assembling part; the assembling portion is detachably connected to the supporting portion through a connecting piece, and the working portion abuts against the material blocking surface.

Further, the working portion comprises a wear surface directly contacted with the material and a supporting surface abutted to the material blocking surface, the wear surface and the supporting surface are oppositely arranged on two sides of the working portion, the assembling portion is connected to the supporting surface, and a wear-resistant layer is arranged on the wear surface.

Furthermore, an annular fixing groove is formed in the junction of the supporting portion and the rolling portion, and a fixing portion which can be limited to the fixing groove is arranged at one end, opposite to the connecting and assembling portion, of the working portion.

Further, still including clear material device, clear material device one end is connected the stiff end with the frame, and the other end extends to the roller body and forms and scrape the material end, clear material device and roller body interval are gapped, scrape the material end and match with the roll surface shape of roller body to can act on the material of attached to on the roll surface.

Further, the material cleaning device comprises a main material cleaning part matched with the rolling part and an auxiliary material cleaning part matched with the supporting part.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the supporting part rotates along with the roller shaft body and is consistent with the material running direction, so that the impact of the material on the supporting part can be reduced; the width of supporting part can be adjusted as required, and the supporting part load bearing of broad is effectual, has solved the problem of conventional roll surface + fender ring structure easy rupture damage.

According to the difference of extrusion material, set up different roll-in structural style, realize the regulation to the wide direction material atress of pair roller for material atress through between two rollers is more balanced, and the extrusion effect is better, and the yield is higher, and effective merit is higher. For fine powder materials (such as fine iron powder, fine titanium powder and the like), the rolling part can meet the extrusion requirement of the materials without a groove body. For medium-coarse materials (such as cement clinker, iron ore, and the like), two end parts can be provided with grooves to reduce the stress of the materials at the two end parts, and the two end parts and the middle part can be provided with grooves to reduce the stress of the materials at the two end parts and the material at the middle part. For coarse materials (cement raw materials, iron ore coarse crushing and the like), two end parts are provided with grooves to reduce the stress of the materials at the two end parts.

The wear-resistant element is arranged on the material blocking surface and can be replaced after being worn. Compared with the conventional fixed side baffle, the wear surface area is large, each wear-resistant element rotates for one circle and then enters the wear area again, the total wear amount in unit time is evenly shared by the whole wear surface, and the service life of the wear-resistant element can be effectively prolonged.

The material cleaning device is arranged, so that materials attached to the surface of the roller are prevented from being brought into the space between the two rollers to be extruded again along with the rotation of the roller shaft, and the materials attached to the surface of the roller are prevented from increasing in density and enlarging the roller gap. Besides being extruded and driven by the roller surface, the materials on the two sides are also driven by the downward movement in the circumferential movement process of the supporting part, so that the materials on the two sides are stressed more, the probability of forming cakes is higher, and the auxiliary material cleaning part is arranged to clean the materials attached to the supporting part.

Drawings

FIG. 1 is a schematic structural view of a conventional roll surface + side baffle of a roll press (or high pressure roller mill);

FIG. 2 is a schematic structural diagram of a conventional roll surface + baffle ring (the baffle ring is fixedly connected to the side surface of a roll sleeve through a bolt) of a rolling machine (or called a high-pressure roller mill);

FIG. 3 is a schematic structural diagram of a conventional roll surface + baffle ring (the baffle ring is clamped on a roll sleeve and fixedly connected to the side surface of the roll sleeve through a bolt) of a roll squeezer (or called a high-pressure roll grinder);

FIG. 4 is a schematic structural view of a side stock stop roller shaft of the invention;

FIG. 5 is an assembly view of the side stock stop roller shaft of the present invention in cooperation with a conventional roller shaft;

FIG. 6 is a schematic view of the construction of the wear member of the present invention;

FIG. 7 is a side view of the wear member of the present invention mounted to a support;

fig. 8 is a schematic structural diagram of the material cleaning device of the invention.

The labels in the figure are: 3-supporting part, 4-wear-resistant element, 401-working part, 402-assembling part, 403-fixing part, 404-assembling hole, 5-first groove, 6-second groove, 9-connecting piece, 16-wear-resistant layer, 18-frame, 19-material cleaning device, 1901-main material cleaning part, 1902-auxiliary material cleaning part and 20-fixing groove.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A side material blocking roller shaft is shown in figures 4-5 and comprises a roller shaft body, wherein a supporting portion 3 for limiting materials to pass through is arranged at the end portion of the roller shaft body, a rolling portion is arranged in the middle of the roller shaft body, the supporting portion 3 protrudes out of a rolling portion along the radial direction, the radial size difference between the supporting portion 3 and the rolling portion is larger than the gap of a roller gap, and a material blocking surface for limiting the materials is arranged on one side end face of the supporting portion 3 corresponding to the rolling portion.

The rolling parts are of cylindrical structures, and the paired supporting parts 3 and the rolling parts are matched with each other to form an inwards concave rolling area.

The roll-in portion is equipped with the cell body that is used for balance roll face pressure on, the cell body is along the annular structure of circumference encircleing the roller body, form transition curved surface or transition inclined plane between cell body and the roll face.

The groove bodies are arranged at two opposite end parts of the rolling part. The groove body on the roll pressing part is a second groove 6, a first groove 5 is arranged on the roll surface of the common roll shaft matched with the side material blocking roll shaft, and the first groove 5 is matched with the second groove 6.

Specifically, the common roll shaft can extend into the space between the two supporting parts 3 of the side material blocking roll shaft and is matched with the rolling parts of the side material blocking roll shaft, so that materials are rolled, the supporting parts 3 playing a material blocking role rotate along with the roll shaft body and are consistent with the running direction of the materials, and the impact of the materials on the supporting parts 3 can be reduced; the width of supporting part 3 can be adjusted as required, and the 3 bearing of supporting part of broad is effectual, has solved the problem of the easy rupture damage of conventional roll surface + fender ring structure.

According to the difference of extrusion material, set up different roll-in structural style, realize the regulation to the wide direction material atress of pair roller for the material atress through between two rollers is more balanced, and the extrusion effect is better, and the yield is higher, and the effective work is higher. For fine powder materials (such as iron fine powder, titanium fine powder and the like), the rolling part can meet the extrusion requirement of the materials without a groove body. For medium-coarse materials (such as cement clinker, iron ore, and the like), two end parts can be provided with grooves to reduce the stress of the materials at the two end parts, and the two end parts and the middle part can be provided with grooves to reduce the stress of the materials at the two end parts and the material at the middle part. For coarse materials (cement raw materials, iron ore coarse crushing and the like), two end parts are provided with grooves to reduce the stress of the materials at the two end parts.

Example 2

Example 2 is a further modification to example 1; further, the same parts are not described in detail here, and as shown in fig. 4, 6 and 7, the wear-resistant component 4 is further included, and the wear-resistant component 4 at least covers the material blocking surface.

The wear-resistant element 4 comprises a working part 401 directly contacted with the material and an assembling part 402 for connecting the working part 401 to the supporting part 3, the assembling part 402 is arranged at one end of the working part 401 and at least matched with the circumferential curved surface of the supporting part 3, and a plurality of assembling holes 404 matched with the connecting pieces 9 are arranged on the assembling part 402; the assembling portion 402 is detachably connected to the supporting portion 3 through a connecting member 9, and the working portion 401 abuts against the material blocking surface.

The working portion 401 comprises a wear surface directly contacting with the material and a supporting surface abutted to the material blocking surface, the wear surface and the supporting surface are oppositely arranged on two sides of the working portion 401, the assembling portion 402 is connected to the supporting surface, and a wear-resistant layer 16 is arranged on the wear surface. Preferably, the wear resistant layer 16 is a hardfacing composite wear layer.

A fixing groove 20 having a ring shape is formed at a boundary between the support portion 3 and the roll pressing portion, and a fixing portion 403 capable of being restricted by the fixing groove 20 is formed at an end of the operating portion 401 opposite to the coupling and fitting portion 402.

Specifically, the wear-resistant element 4 is arranged on the material blocking surface, and the wear-resistant element 4 can be replaced after being worn; compared with the conventional fixed side baffle, the wear surface area is large, each wear-resistant element 4 rotates for one circle and then enters the wear area again, the total wear amount in unit time is evenly shared by the whole wear surface, and the service life of the wear-resistant element 4 can be effectively prolonged.

Example 3

Example 3 is a further modification of examples 1 and 2; further, the same components are not described again, and as shown in fig. 8, the roll shaft further includes a material cleaning device 19, one end of the material cleaning device 19 is connected with the frame 18, the other end of the material cleaning device extends to the roll shaft body to form a material scraping end, a gap is formed between the material cleaning device 19 and the roll shaft body, and the material scraping end is matched with the roll surface shape of the roll shaft body and can act on materials attached to the roll surface.

The material cleaning device 19 includes a main material cleaning portion 1901 matched with the rolling portion, and a sub material cleaning portion 1902 matched with the support portion 3.

Specifically, when the material passes through the material cleaning device 19 once, the material is scraped off by the scraping end, so that the material attached to the roller pressing part is prevented from being brought between the two rollers along with the rotation of the roller shaft body to be extruded again, and the material attached to the roller pressing part is prevented from increasing in density and enlarging a roller gap. Besides being extruded and driven by the rolling part, the materials on the two sides are also driven by the downward movement in the circular movement process of the supporting part 3, so that the materials on the two sides are stressed more, the probability of forming cakes is higher, and the auxiliary material cleaning part 1902 is arranged to clean the materials attached to the supporting part 3.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The side material blocking roller shaft comprises a roller shaft body and is characterized in that a supporting part for limiting materials to pass through is arranged at the end part of the roller shaft body, a rolling part is arranged in the middle of the roller shaft body, the supporting part protrudes out of the rolling part along the radial direction, the radial size difference between the supporting part and the rolling part is larger than the gap of a roller gap, and a material blocking surface for limiting the materials is arranged on one side end surface of the supporting part corresponding to the rolling part.

2. The side dam roll shaft of claim 1, wherein the roll sections are cylindrical in configuration and the pairs of support sections cooperate with the roll sections to form a concave roll nip.

3. The side material blocking roller shaft according to claim 1, wherein a groove body for balancing the pressure of the roller surface is arranged on the rolling portion, the groove body is of an annular structure surrounding the roller shaft body along the circumferential direction, and a transition curved surface or a transition inclined surface is formed between the groove body and the roller surface.

4. The side stop roll shaft according to claim 3, wherein the groove is formed at an end portion and/or a middle portion of the rolled portion.

5. The side dam roller of any one of claims 1-4, further comprising wear members covering at least the dam surface.

6. The side dam roller of claim 5, wherein the wear member comprises a working portion in direct contact with the material and an assembling portion connecting the working portion to the support portion, the assembling portion is provided at one end of the working portion and at least matches with the circumferential curved surface of the support portion, the assembling portion is provided with a plurality of assembling holes matching with the connecting members; the assembling portion is detachably connected to the supporting portion through a connecting piece, and the working portion abuts against the material blocking surface.

7. The side material blocking roller shaft according to claim 6, wherein the working portion comprises a wear surface directly contacting with the material and a support surface abutting against the material blocking surface, the wear surface and the support surface are arranged on two sides of the working portion opposite to each other, the assembling portion is connected to the support surface, and a wear-resistant layer is arranged on the wear surface.

8. The side dam roller shaft of claim 6 or 7, wherein the boundary between the support part and the pressing part is provided with a fixing groove having a ring shape, and the end of the working part opposite to the connection fitting part is provided with a fixing part which is restricted to the fixing groove.

9. The side stop roller according to claim 1, 2, 3, 4, 6 or 7, further comprising a material cleaning device, wherein one end of the material cleaning device is connected with the frame and the other end extends to the roller body to form a material scraping end, the material cleaning device is spaced from the roller body by a gap, and the material scraping end is matched with the roller surface of the roller body in shape and can act on materials attached to the roller surface.

10. The side dam roller shaft of claim 9, wherein the material clearing means comprises a main material clearing portion matching the roller pressing portion and a sub material clearing portion matching the support portion.