CN107269680B

CN107269680B - Rubber bending roller for high-temperature high-humidity corrosive environment

Info

Publication number: CN107269680B
Application number: CN201710495119.4A
Authority: CN
Inventors: 曹亮
Original assignee: Polytec Yangzhou Rubber S&t Co ltd
Current assignee: Polytec Yangzhou Rubber S&t Co ltd
Priority date: 2017-06-26
Filing date: 2017-06-26
Publication date: 2023-04-25
Anticipated expiration: 2037-06-26
Also published as: CN107269680A

Abstract

The rubber roller for high temperature and high humidity corrosive environment consists of end surface sealing device, air throat, oil throat and several rotors, the rotors are in the middle of the whole rubber roller, the end surface sealing device is set in the two ends of the whole rubber roller, the rubber sleeve is set on the outer surface of the rotor and forms corresponding air path and oil path with the air throat and the oil throat as core; the invention has reasonable structure and clear working principle, completely meets the requirements of severe use environment, and thoroughly changes the defects of short service life, unreliability, immediate replacement after failure, influence on production and the like of the existing products. The structure of the rubber bending roller is easier to manufacture and maintain, the manufacturing cost is further reduced, and the service performance of the rubber bending roller in a severe environment is improved.

Description

Rubber bending roller for high-temperature high-humidity corrosive environment

Technical Field

The invention belongs to the technical field of textile printing and dyeing equipment, relates to a rubber roller for textile printing and dyeing, and particularly relates to a rubber roller for a high-temperature high-humidity corrosive environment.

Background

At present, the rubber roller used in high-temperature and high-humidity corrosive environments, such as the rubber roller used in the closed high-temperature pretreatment production line in the textile printing and dyeing industry, has the defects of short service life, easy corrosion to damage deformation, unstable performance, yi Kazu rotation and the like, and even imported like products have more or less similar problems. The prior solution is to replace frequently, which causes a great deal of waste of manpower and material resources and loss caused by production stoppage.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the rubber bending roller for the high-temperature high-humidity corrosive environment, which has the advantages that the structure of the rubber bending roller is easier to manufacture and maintain, the manufacturing cost can be further reduced, and the service performance of the rubber bending roller in a severe environment can be improved.

The technical scheme of the invention is as follows: a rubber bending roller for a high-temperature high-humidity corrosive environment comprises a rubber sleeve; the method is characterized in that: the rubber bending roller consists of an end face sealing device, an air throat, an oil throat and a plurality of rotors, wherein the rotors are positioned in the middle of the whole rubber bending roller, the end face sealing device is arranged at two ends of the whole rubber bending roller, and the rubber sleeve is sleeved on the outer surface of the rotors;

each rotor consists of an arc shaft, a bearing and a sleeve, a pressure communication hole is formed in each rotor, the rotors are arranged on the arc shafts through the bearings, and each rotor is positioned through the sleeve; the arc shaft is composed of an arc shaft middle section and arc shaft two side sections, the arc shaft middle section is of a solid cylinder structure, the arc two side sections are of hollow tubular structures, the arc middle section is connected with the arc two side sections in a matched mode, plugs are connected to the heads of the arc two side sections, an air joint first mounting hole penetrating through the pipe wall, an air joint second mounting hole, an air vent, an oil through hole and a plurality of sealing ring grooves are formed in the arc two side sections, and a pressure balance hole is formed in the arc middle section and is connected and communicated with a drilling channel of the core of the arc middle section;

the end face sealing device consists of an end cover, an end face sealing cylinder, a cylinder fixing bearing and a rubber sealing body; the end cover is fixedly connected to the end face sealing cylinder body through bolts, the rubber sealing body is arranged inside the end cover and the end cover sealing cylinder body, and the end face sealing cylinder body is fixedly arranged on the arc-shaped shaft through a cylinder body fixing bearing;

the air throats are arranged in the cavities of the two side sections of the arc-shaped shaft, an air throats channel is formed by the air throats and the inner walls of the cavities of the two side sections of the arc-shaped shaft, and the air throats channel is communicated with the first mounting holes of the air connectors and the vent holes, so that compressed air is conveyed from the first mounting holes of the air connectors to the vent holes; the novel air-tight sealing device is characterized in that an air screen is arranged between the arc-shaped shaft and the end cover as well as between the air screen and the end face sealing cylinder body, the air screen is of a sleeve type structure, the inner surface of the air screen is connected with the outer contour of the arc-shaped shaft in a sealing fit manner, the outer surface of the air screen is connected with the rubber sealing body in a matching manner, an oil outlet and a plurality of micropores are formed in the air screen, the oil outlet is communicated with the oil through hole in a connecting manner, the micropores are communicated with the vent holes in a connecting manner, an air path is formed from the first mounting hole of the air connector, the air throat channel and the vent holes to the micropores, and compressed air from the vent holes is finally led into the rubber sealing body.

The oil throat is integrally arranged in the cavity of the two side sections of the arc shaft, one part of the outer contour of the oil throat is contacted with the inner wall of the air throat, the other part of the outer contour is contacted with the inner wall of the cavity of the two side sections of the arc shaft, a threaded hole is formed in the oil throat and is communicated with the oil through hole in a connecting mode, an inner tooth and an outer tooth switching mode is arranged in the threaded hole, an inner cutting sleeve is arranged on the inner tooth and the outer tooth switching mode, a copper pipe is arranged in the inner cutting sleeve, and the copper pipe is connected with the oil nozzle through an outer cutting sleeve and a locking nut after penetrating through plugs of the heads of the two side sections of the arc shaft; the oil way is formed from the oil nozzle, the copper pipe, the inner tooth and outer tooth switching, the oil throat, the oil through hole and the oil outlet to the cavity behind the rubber sealing body, and the structure is used for realizing that lubricating grease is led into the cavity behind the rubber sealing body from the oil nozzle.

The second mounting hole of the air joint passes through a cavity between the air throat and the copper pipe, is then communicated with a connecting hole arranged on the oil throat and is finally communicated with the pressure balance hole, so that an internal and external pressure balance channel from the second mounting hole of the air joint to the pressure balance hole is formed; the pressure communication hole arranged in the rotor and the internal and external pressure balance channels form a whole pressure balance system, namely a communication air passage from the air joint second mounting hole at one end to the air joint second mounting hole at the other end penetrates through the whole bending roller, and the structure is used for balancing the air pressure in the whole bending roller from the air joint second mounting hole.

The rubber sealing body is Sc skeleton oil blanket, and the quantity of rubber sealing body is 2, sets up in independent detachable end cover, is convenient for tear open and trade and maintain.

A sealing ring groove is arranged between the vent hole and the oil through hole, and the sealing ring groove is an O-shaped sealing ring groove.

The middle section is of a rod-shaped structure, is made of steel, and the surface of the middle section is subjected to electroplating treatment; the two side sections are tubular structures, made of stainless steel, and are internally subjected to finish machining treatment.

The first mounting hole of the air joint and the second mounting hole of the air joint are threaded holes, the first mounting hole of the air joint is a common threaded hole with the nominal diameter of 5mm, and the second mounting hole of the air joint is a pipe threaded hole with the nominal diameter of 1/8 inch.

The aperture of the micropore is 0.3-0.5 mm.

The rubber sleeve is of a tubular structure, is made of high-temperature-resistant and corrosion-resistant rubber, is wrapped on the outer surface of the whole bending roller, and is in clearance fit with the rotor and the end face sealing device.

The beneficial effects of the invention are as follows: the rubber bending roller for the high-temperature high-humidity corrosive environment has the advantages of reasonable structure, easy manufacture, convenient use and maintenance, clear working principle, complete satisfaction of the requirements of severe use environment, complete change of the defects of short service life, unreliability, immediate replacement of faults, influence on production and the like of the existing product.

The invention has the following specific advantages:

(1) The rubber sealing body is designed, and meanwhile, the rubber sealing is assisted by compressed air, so that the pressure of the outer sealing is relieved, and the service life and the reliability of the rubber sealing body are improved; the packing property and the effectiveness of the inner side seal are improved through compressed air;

(2) Through the auxiliary rubber seal of the compressed air, even if the outer rubber seal fails, the compressed air leaks to a specific direction, so that the invasion of external steam, corrosive media and the like can be effectively prevented, and the internal structure is protected from corrosion; the leaked compressed air can also inform the effective state of the rubber seal; when the rubber seal fails, the rubber seal does not need to be replaced immediately, a user can select to replace the rubber seal at a certain time without influencing production, and the service performance of the bending roller does not have any loss before the rubber seal is replaced, and the service method is also unchanged from the previous state;

(3) A small gap leakage channel between the end cover and the air screen is additionally arranged, so that the leaked compressed air can better exert the blowing-off effect;

(4) The outer rubber sealing body is arranged in an independent detachable part, so that the maintenance is very convenient;

(5) The lubricating grease is supplemented to the rear rubber sealing part by the oil nozzle, so that the service life of the rear rubber sealing part is prolonged;

(6) The ingenious design of the internal and external pressure balance channel is matched with the internal rotor provided with the vent holes, so that the balance between the pressure in the inner cavity of the whole bending roller and the outside is realized, and the displacement and damage to the rubber sleeve and the whole structure caused by the expansion of gas in the sealed cavity due to high temperature are eliminated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the arc shaft according to the present invention.

FIG. 3 is an enlarged schematic view of the end structure of the roll of the present invention.

Fig. 4 is a schematic diagram of a rotor structure according to the present invention.

FIG. 5 is a schematic view of the structure of the air screen according to the present invention.

In the figure: the end face seal 1, the oil way 2, the gas way 3, the internal and external pressure balance channel 4, the rotor 5, the rubber sleeve 6, the arc shaft 7, the bearing 8, the sleeve 9, the arc shaft middle section 10, the arc shaft two side sections 11, the gas joint first mounting hole 12, the gas joint mounting hole 13, the clamp spring groove 14, the seal ring groove 15, the vent hole 16, the oil through hole 17, the pressure balance hole 18, the end cover 19, the bolt 20, the end face seal cylinder 21, the rubber seal body 22, the air throat 23, the rubber O-ring 24, the air screen 25, the oil throat 26, the rubber O-ring 27, the internal and external tooth switching 28, the internal cutting ferrule 29, the copper pipe 30, the plug 31, the external cutting ferrule 32, the locking nut 33, the oil nozzle 34, the cylinder fixing bearing 35, the pressure communication hole 36, the micropore 37, the oil outlet 38, the air throat channel 39, the drilling channel 40 and the connecting hole 41.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in figure 1, the bending roller for the high-temperature high-humidity corrosive environment is composed of end face sealing devices 1, oil ways 2, air ways 3, internal and external pressure balance channels 4 arranged at two ends, a plurality of rotors 5 arranged in the middle, a sleeve 9 positioned between the rotors, a rubber sleeve 6 sleeved outside, an arc shaft 7 supported inside and a bearing 8. Compressed air is used to act on the end face seal 1 through the pressure regulating valve and the air passage 3; grease is used to act on the end face seal 1 through the oil way 2; the balance of the internal and external pressure of the roller body is maintained by virtue of the internal and external pressure balance channel 4 and the air holes on the rotor 5.

As shown in fig. 2, a bending roll for a high-temperature and high-humidity corrosive environment is provided, wherein an arc shaft 7 is composed of an arc shaft middle section 10 and arc shaft two side sections 11 at two ends. The middle section 10 of the arc shaft is in a rod-shaped structure, and is made of steel (surface plating can be adopted or stainless steel can be used for improving the corrosion resistance level); the two side sections 11 of the arc shaft are of tubular structures, made of stainless steel, subjected to internal finishing treatment and connected with the middle section 10 of the arc shaft in a matched manner; the two side sections 11 of the arc shaft are provided with an air joint first mounting hole 12 and an air joint second mounting hole 13 which penetrate through the pipe wall, a plurality of clamp spring grooves 14, a rubber O-ring groove 15, an air vent 16 and an oil through hole 17; the arc-shaped shaft middle section 10 is provided with a pressure balance hole 18 and extends from a corresponding drilling channel 40 to the end face of the arc-shaped shaft middle section 10;

as shown in fig. 3, a bending roll for a high-temperature high-humidity corrosive environment is provided, an end face sealing device is connected to an end face sealing cylinder 21 through a bolt 20 by an end cover 19, and 2 Sc framework oil seals 22 are clamped and installed at the same time; the end face cylinder 21 is mounted to the arc shaft 7 by a cylinder fixing bearing 35. An O-ring is arranged under the cylinder fixing bearing 35 and is used for eliminating gaps, so that the structure is more stable. The air throat 23 is arranged in the cavity of the arc-shaped shaft 7 through an O-shaped ring, and the air throat and the inner wall of the cavity of the arc-shaped shaft 7 are sealed to form a channel for connecting the air joint mounting hole 12 and the vent hole 16, so that compressed air can be conveyed from the air joint mounting hole 12 to the vent hole 16; the air screen 25 is mounted on the arc shaft through two rubber O-shaped rings 15, the structure of the air screen is a tubular structure, the inner wall and the outer wall are precisely machined, the outer wall is matched with the two Sc framework oil seals 22, the inner wall is matched with the two rubber O-shaped rings, a plurality of micropores with the aperture of 0.3-0.5 mm are arranged at the position of the vent hole 16, and compressed air coming out of the vent hole 16 is led into the space between the two Sc framework oil seals 22. Thereby forming the gas path 3 from the first mounting hole 12 of the gas joint to the two Sc skeleton oil seals 22 in the end face sealing device 1.

The oil throat 26 is fixed by a rubber O-shaped ring 27 and a rubber O-shaped ring 24, a component channel is arranged between the inner side of the air throat 23 and the oil through hole 17 by means of a drilling oil way, and a copper pipe 30 is connected with a cutting sleeve 29 by inner and outer tooth switching 28; copper pipe 30 passes through plug 31, is connected to nipple 34 by movable ferrule 32 and lock nut 33; holes formed in the air screen 25 at corresponding positions connect the oil through holes 17 with the rear chamber of the rubber seal 22, thereby forming the oil path 2 from the oil nozzle 34 to the rear chamber of the rubber seal 22.

The second mounting hole 13 of the air joint is connected with the pressure balance hole 18 of the arc shaft 7 through the chambers on the inner side of the air throat 23 and the outer side of the copper pipe 30 by the connecting hole 41 arranged on the oil throat 26, so that an internal and external pressure balance channel 4 from the second mounting hole 13 of the air joint to the pressure balance hole 18 is formed.

As shown in fig. 4, in a roll for a high-temperature and high-humidity corrosive environment, a rotor 5 is made of nylon, and a pressure communication hole 36 is formed in the rotor. The rotor 5 is mounted on the arc-shaped shaft 7 through a bearing 8; the rotors 5 are positioned through the sleeve 9; under the positioning action of a plurality of sleeves 9, a plurality of rotors 5 are arranged and mounted on an arc-shaped shaft 7, and the end surfaces communicated with the two ends are sealed to form a mandrel part of the bending roller; the rubber sleeve 6 is sleeved outside the mandrel, two ends of the rubber sleeve are clamped in clamping grooves corresponding to end face seals, and glue is used for fixing and sealing, so that the bending roller is formed. The pressure communication hole provided in the rotor 5 and the aforementioned internal and external pressure balance passage 4 constitute the whole pressure balance system, that is, a communication passage from the air joint mounting hole 13 at one end through the whole roll to the air joint mounting hole 13 at the other end. The rubber sleeve 6 is of a tubular structure, is made of high-temperature-resistant and corrosion-resistant rubber, is wrapped outside the whole bending roller, and is kept in clearance fit with the rotor 5 and the end face seal 1.

As shown in figures 1-4, in the bending roller for a high-temperature high-humidity corrosive environment, in operation, compressed air is introduced from the first mounting hole 12 of the air joint to the space between two Sc framework oil seals 22, and the air pressure is 0.3-0.5kg/cm, so that leakage is not caused as an upper limit. Under the action of the air pressure, the abrasion of the outer side seal 22 is reduced, the service life of the outer side seal is prolonged to a great extent, and the working reliability is improved; even if the outside seal 22 wears out to a certain extent and fails, under the action of air pressure, the air flow leaks to the outside, the blowing effect is enhanced through the small gap between the end cover 20 and the air screen 25, the invasion of outside steam and corrosive medium can be prevented, the internal tissues of the bending roller are protected from corrosion, and a user can have plentiful time to select to replace the outside rubber seal 22 at appropriate intervals without affecting production. The outer rubber seal 22 is mounted on the end cap and is very easily separated from the main body for easy replacement. During operation, grease is periodically replenished from the nipple 34 to the inboard rubber seal 22, slowing wear of the inboard rubber seal 22. The second mounting hole 13 of the air joint is communicated with the inner cavity of the bending roller and the outside atmosphere, so that the balance of the air pressure inside and outside the bending roller can be ensured at any time. Avoiding the displacement and damage of the rubber sleeve 6 and the whole structure caused by the expansion of the gas in the closed cavity due to the high temperature.

Claims

1. A rubber bending roller for a high-temperature high-humidity corrosive environment comprises a rubber sleeve (6); the method is characterized in that: the rubber bending roller consists of an end face sealing device (1), an air throat (23), an oil throat (26) and a plurality of rotors (5), wherein the rotors (5) are positioned in the middle of the whole rubber bending roller, the end face sealing device (1) is arranged at two ends of the whole rubber bending roller, and the rubber sleeve (6) is sleeved on the outer surface of the rotors (5);

each rotor (5) consists of an arc shaft (7), a bearing (8) and a sleeve (9), a pressure communication hole (36) is formed in each rotor (5), the rotors (5) are arranged on the arc shaft (7) through the bearings (8), and each rotor (5) is positioned through the sleeve (9); the arc shaft (7) is composed of a middle section arc shaft (10) and two side section arc shafts (11), the middle section arc shaft (10) is of a solid cylinder structure, the two side section arc shafts (11) are of hollow tubular structures, the middle section arc shaft (10) is matched and connected with the two side section arc shafts (11), plugs (31) are connected to the heads of the two side section arc shafts (11), an air joint first mounting hole (12), an air joint second mounting hole (13), an air vent (16), an oil through hole (17) and a plurality of sealing ring grooves (15) penetrating through the pipe wall are formed in the two side section arc shafts (11), a pressure balance hole (18) is formed in the middle section arc shaft (10), and the pressure balance hole (18) is connected and communicated with a drilling channel (40) of the core of the middle section arc shaft (10);

the end face sealing device (1) is composed of an end cover (19), an end face sealing cylinder (21), a cylinder fixing bearing (35) and a rubber sealing body (22); the end cover (19) is fixedly connected to the end surface sealing cylinder body (21) through a bolt (20), the rubber sealing body (22) is arranged inside the end cover (19) and the end cover sealing cylinder body (21), and the end surface sealing cylinder body (21) is fixedly arranged on the arc-shaped shaft (7) through a cylinder body fixing bearing (35);

the rubber sealing bodies (22) are Sc framework oil seals, the number of the rubber sealing bodies (22) is 2, and the rubber sealing bodies are arranged in independent detachable end covers (19); a sealing ring groove (15) is arranged between the vent hole (16) and the oil through hole (17), and the sealing ring groove (15) is an O-shaped sealing ring groove;

the air throat (23) is arranged in the cavity of the arc-shaped shafts (11) at the two side sections, the air throat (23) and the inner wall of the cavity of the arc-shaped shafts (11) at the two side sections form an air throat channel (39), and the air throat channel (39) is connected and communicated with the first mounting hole (12) of the air joint and the vent hole (16), so that compressed air is conveyed from the first mounting hole (12) of the air joint to the vent hole (16); the novel air-tight sealing device is characterized in that an air screen (25) is arranged between the arc-shaped shaft (7) and the end cover (19) and between the air screen (25) and the end face sealing cylinder (21), the air screen (25) is of a sleeve type structure, the inner surface of the air screen (25) is connected with the outer contour of the arc-shaped shaft (7) in a sealing fit manner, the outer surface of the air screen (25) is connected with the rubber sealing body (22) in a matching manner, an oil outlet hole (38) and a plurality of micropores (37) are formed in the air screen (25), the oil outlet hole (38) is communicated with the oil through hole (17), the micropores (37) are communicated with the vent holes (16), an air path (3) is formed from the first air joint mounting hole (12), the air throat channel (39) and the vent holes (16) to the micropores (37), and compressed air from the vent holes (16) is finally led into the rubber sealing body (22), and the compressed air is led into the rubber sealing body (22) from the first air joint mounting hole (12).

The oil throat (26) is integrally arranged in a cavity of the arc-shaped shaft (11) at two sides, one part of the outer outline of the oil throat (26) is contacted with the inner wall of the air throat (23), the other part of the outer outline is contacted with the inner wall of the cavity of the arc-shaped shaft (11) at two sides, the oil throat (26) is provided with a threaded hole, the threaded hole is communicated with the oil through hole (17), the threaded hole is internally provided with an inner tooth switching (28), the inner tooth switching (28) is provided with an inner clamping sleeve (29), a copper pipe (30) is arranged in the inner clamping sleeve (29), and the copper pipe (30) is connected with an oil nozzle (34) through an outer clamping sleeve (32) and a locking nut (33) after penetrating through a plug (31) at the head of the arc-shaped shaft (11) at two sides; an oil path (2) is formed from the oil nozzle (34), the copper pipe (30), the inner tooth and outer tooth switching (28), the oil throat (26), the oil through hole (17) and the oil outlet (38) to a cavity behind the rubber sealing body (22), and the structure is that lubricating grease is led into the cavity behind the rubber sealing body (22) from the oil nozzle (34);

the second mounting hole (13) of the air joint passes through a cavity between the air throat (23) and the copper pipe (30), then is communicated to a connecting hole (41) arranged on the oil throat (26), and finally is communicated to the pressure balance hole (18), so that an internal and external pressure balance channel (4) from the second mounting hole (13) of the air joint to the pressure balance hole (18) is formed; the pressure communication hole (36) arranged in the rotor (5) and the internal and external pressure balance channels (4) form a whole pressure balance system, namely a communication air passage from the air joint second mounting hole (13) at one end to the air joint second mounting hole (13) at the other end penetrates through the whole bending roll, and the above structure is used for balancing the air pressure in the whole bending roll from the air joint second mounting hole (13).

2. A rubber roll for use in a high temperature, high humidity corrosive environment as in claim 1 wherein: the middle arc shaft (10) is of a rod-shaped structure, is made of steel, and is subjected to electroplating treatment on the surface; the arc shafts (11) at the two side sections are of tubular structures, made of stainless steel and are subjected to finish machining.

3. A rubber roll for use in a high temperature, high humidity corrosive environment as in claim 1 wherein: the first air connector mounting hole (12) and the second air connector mounting hole (13) are threaded holes, the first air connector mounting hole (12) is a common threaded hole with a nominal diameter of 5mm, and the second air connector mounting hole (13) is a pipe threaded hole with a nominal diameter of 3.175 mm.

4. A rubber roll for use in a high temperature, high humidity corrosive environment as in claim 1 wherein: the aperture of the micropores (37) is 0.3-0.5 mm.

5. A rubber roll for use in a high temperature, high humidity corrosive environment as in claim 1 wherein: the rubber sleeve (6) is of a tubular structure, is made of high-temperature-resistant and corrosion-resistant rubber, is wrapped on the outer surface of the whole bending roller, and forms clearance fit with the rotor (5) and the end face sealing device (1).