CN107322765B - Novel high-efficient spiral vacuum extrusion molding machine - Google Patents
Novel high-efficient spiral vacuum extrusion molding machine Download PDFInfo
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- CN107322765B CN107322765B CN201710615584.7A CN201710615584A CN107322765B CN 107322765 B CN107322765 B CN 107322765B CN 201710615584 A CN201710615584 A CN 201710615584A CN 107322765 B CN107322765 B CN 107322765B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Sealing Of Bearings (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a novel efficient spiral vacuum extrusion molding machine, which comprises a stirrer part and an extruder part, wherein the extruder part comprises a vacuum box body and a bearing chamber, the bearing chamber is fixed on the vacuum box body in a sealing way and is connected with the vacuum box body through a bolt, the stirrer part comprises a mud crushing cutter and a taper sleeve, one end of the taper sleeve extends outwards to form a containing part of the mud crushing cutter, the mud crushing cutter is arranged in the taper sleeve and is positioned in the containing part, the bearing chamber also comprises a front-stage sealing cover and a shaft sleeve, the shaft sleeve is sleeved on a main shaft and is connected with a distance sleeve, the front-stage sealing cover is sleeved on the shaft sleeve and is in airtight contact with the cover sleeve, the front-stage sealing cover is in airtight connection with a bearing cup, and an airtight cavity is formed among the front-stage sealing cover, the shaft sleeve, the bearing cover and the bearing cup. The invention can prevent foreign matters from entering the bearing and prevent pollution of bearing lubricating oil, and only the lip-shaped sealing ring and the felt ring on the front-stage sealing cover need to be replaced when the vacuum tightness of the machine is damaged.
Description
Technical Field
The invention relates to an extruder, in particular to a spiral vacuum extruder.
Background
The novel high-efficiency spiral vacuum extrusion molding machine is large equipment, in a traditional installation mode, an electric motor installation underframe is installed separately from a main body, and often, because the installation distance and the position direction have deviation, the installation problem of a transmission belt is caused, and particularly, when overload and impact occur, the influence on the machine connection part is caused. The novel high-efficiency spiral vacuum extrusion molding machine is a part of complete equipment, the main shaft sealing part is very difficult to maintain due to the influence of auxiliary equipment on the production site, and the problem that the raw materials of the extrusion molding machine enter a bearing chamber to damage a bearing due to sealing damage occurs frequently in actual use of the original main shaft sealing structure. If the vacuum extrusion process is used, besides raw materials can enter a bearing chamber after the seal (oil seal) is damaged, the negative pressure of the vacuum chamber can pump away lubricating oil in the bearing chamber to cause bearing heating and locking, the vacuum degree of the vacuum chamber can be seriously reduced due to the seal damage of a vacuum extruder, even if the problem can be found in early stage, the whole main shaft part (comprising the bearing chamber) also has to be detached when the maintenance is carried out, the bearing is detached to check whether foreign matters such as raw materials of products enter the bearing, the bearing is damaged (the actual situation is more than eighty percent damaged and replaced), and damaged sealing elements are replaced, and the like, because the vacuum (raw materials) chamber and the bearing chamber of the spiral vacuum brick extruding (brick extruding) machine are isolated and sealed by the oil seal. Too high a temperature rise of the main bearing in daily use means that a failure of the seal occurs, and at the same time, the early stage of the failure of the seal is not easy to be confirmed. After finding problems, the whole main shaft part needs to be disassembled and assembled, the oil seal is replaced, the bearing is checked, the whole maintenance process is continuous operation, the rush repair workload is very large, and even the kiln has no product which can be burned and stops production because the kiln cannot be repaired in time.
The structure of the existing bearing chamber is as follows: the bearing cup (the bearing cup is fixedly connected with the raw material chamber through a sealing bolt, a sealing O-shaped ring is arranged between two fixing surfaces), the thrust aligning roller bearing (the thrust aligning roller bearing is arranged in the bearing cup, the end face of the outer ring is fixed on the back cover of the bearing cup (the bottom is on the top), the distance sleeve (the distance sleeve is fixed on the shaft and clamped between the left bearing and the right bearing, the two end faces are propped against the two bearing inner rings to ensure a certain distance), the aligning roller bearing (the bearing outer ring is fixed in the bearing cup, the inner ring is arranged on the shaft, one end face of the inner ring is propped against the other end face of the distance sleeve and is propped against the end face of the shaft sleeve), the shaft sleeve (the shaft sleeve is fixed on the inner ring and the end face of the shaft sleeve of the aligning roller bearing, the sealing O-shaped ring is arranged on the shaft sleeve to ensure the sealing between the main shaft and the shaft sleeve), the labyrinth static disc (the labyrinth static disc is fixed on the end face step of the bearing cup through the bolt and is provided with the O-shaped ring sealing boss, the lip-shaped static disc is arranged in the bearing cup, the lip-shaped sealing boss is arranged in the positioning hole of the shaft sleeve, and the lip-shaped sealing boss is formed by the lip-shaped sealing boss, and the lip-shaped sealing boss is arranged in the bearing hole, and the lip-shaped sealing boss is matched with the other end face of the lip-shaped sealing boss. The bearing chamber is formed by the matching and connection of the parts, the whole bearing chamber is fixed on a vacuum box body (the vacuum box body is a sealing environment capable of forming negative pressure) of the novel high-efficiency spiral vacuum extrusion molding machine, and the vacuum box body can meet the sealing isolation of water, oil and gas outside the box under certain conditions after the bearing chamber is connected.
Disclosure of Invention
The invention aims to solve the technical problems that: the novel high-efficiency spiral vacuum extrusion molding machine is capable of well protecting a lower-stage main shaft bearing, and an upper-stage mud crushing device ensures that mud cannot be turned outwards from the periphery of a mud crushing cutter to form clusters, so that mud adhesion on the periphery of an upper-stage material receiving box is reduced.
The technical scheme for solving the technical problems is as follows: a novel high-efficiency spiral vacuum extrusion molding machine, which comprises a stirrer part and an extruder part;
the stirrer part comprises a motor, a pneumatic clutch, a speed reducer, a coupler, a stirring knife, a screw, a taper sleeve, an inverted taper sleeve, a mud crushing knife, a stirring main shaft, a feeding box, a stirring tank and a sealing mud cylinder, wherein the stirrer plays a role in uniformly mixing raw materials and simultaneously forms sealing between the feeding box and the outside by utilizing the raw materials at the positions of the taper sleeve and the inverted taper sleeve;
the extruder part comprises a motor, a pneumatic clutch, a speed reducer, a vacuum box body, a bearing chamber, a main shaft, a mud pressing plate, a mud cylinder, a machine head, a forming die and a vacuum pump, and is used for forcedly extruding the raw materials stirred by the upper stage to form a billet with a required section shape through the forming die. The bearing chamber is hermetically fixed on the vacuum box body and is connected with the vacuum box body through a bolt, the bearing chamber comprises a bearing, a distance sleeve, a bearing cup and a bearing cover, the distance sleeve is sleeved on the main shaft and is connected with the main shaft through a flat key, the bearing is arranged on the distance sleeve, the bearing cup is sleeved on the bearing, and the bearing cover is arranged on the main shaft and is connected with the bearing cup;
in the mixer part, one end of the taper sleeve extends outwards to form a containing part of the mud crushing blade, and the mud crushing blade is arranged in the taper sleeve and is positioned in the containing part; in the extruder part, the bearing chamber also comprises a front-stage sealing cover and a shaft sleeve, the shaft sleeve is sleeved on the main shaft and is connected with the distance sleeve, the front-stage sealing cover is sleeved on the shaft sleeve and is in airtight contact with the shaft sleeve, the front-stage sealing cover is in sealing connection with the bearing cup, a sealable cavity is formed among the front-stage sealing cover, the shaft sleeve, the bearing cover and the bearing cup, the motor is fixedly connected with the speed reducer through four sets of bolts, and the main shaft of the extruder part is rigidly connected with the speed reducer through a tension sleeve.
The invention further adopts the technical scheme that: in the extruder part, the hole inner wall of the bearing chamber front-stage sealing cover is provided with a groove for placing a felt ring oil seal, the end face of the front-stage sealing cover is provided with a connecting part connected with a bearing cup, the front-stage sealing cover is provided with a boss for placing a lip-shaped sealing ring, one end of a shaft sleeve is provided with a stepped spigot I used for being connected with a distance sleeve, the spigot I is provided with threads, one end of the distance sleeve is provided with a spigot II corresponding to the spigot I, the spigot II is also provided with threads, and the shaft sleeve is sleeved on a main shaft and is in threaded connection with the distance sleeve.
In the mixer part, one end of the taper sleeve extends outwards to form a containing part of the mud crushing blade, and the mud crushing blade is arranged in the taper sleeve and is positioned in the containing part. The mud crushing end of the mud crushing blade is provided with a protruding part, a front tangent plane and a rear tangent plane, and the protruding part is positioned at the front tangent plane.
In the extruder part, the bearing chamber also comprises an observation control device, the observation control device comprises an air pipe, a flowmeter, a pressure gauge and a valve II, the flowmeter, the pressure gauge and the valve II are arranged on the air pipe, and two ends of the air pipe are respectively communicated with the sealable chamber and the external atmosphere.
In the extruder part, the bearing chamber also include oiling device, this oiling device includes oil pump, valve I and withstand voltage oil pipe, withstand voltage oil pipe one end be connected with the oil pump through the valve, the other end is located can airtight cavity to set up in preceding stage seal cover through the coupling, preceding stage seal cover on be equipped with the oil through-hole, withstand voltage oil pipe link up with the oil ring between preceding stage seal cover and the axle sleeve through the oil through-hole.
By adopting the technical scheme, the novel efficient spiral vacuum extrusion molding machine has the following beneficial effects:
1. the invention comprises a front-stage sealing cover and a shaft sleeve, wherein the shaft sleeve is sleeved on a main shaft and is connected with a distance sleeve through threads, and the front-stage sealing cover is sleeved on the shaft sleeve and is in airtight contact with the cover sleeve. The front-stage sealing cover is an independent sealing part, and the sealing part on the front-stage sealing cover can be independently detached for replacement and maintenance, so that the performance of the novel high-efficiency spiral vacuum extrusion molding machine and the quality of products can be effectively ensured by timely maintenance, foreign matters are prevented from entering the bearing for sealing, and the damage to the bearing caused by the disassembly, cleaning and inspection of the bearing is avoided. Only the lip-shaped sealing ring and the felt ring on the front-stage sealing cover need to be replaced when the vacuum tightness of the extruder is damaged, and the damage to the bearing is avoided. The replacement of the vacuum seal on the damaged front-stage seal cover is much more convenient and simpler than the maintenance and replacement of the bearing, and the bearing seal can be inspected and replaced when the damaged vacuum seal is replaced. The invention greatly reduces the loss, shortens the maintenance time by eighty percent at least, and improves the service efficiency of the equipment.
2. The structure of the mud crushing cutter and the taper sleeve is improved on the basis of the original structure, the original mud crushing cutter is positioned outside the taper sleeve in the upper-level receiving box, the mud crushing cutter is longer in length, the mud is not turned over from the periphery of the mud crushing cutter and is worn out in the middle and is broken in the middle, the mud is broken in the lower stage, the original mud crushing cutter cannot be placed in the taper sleeve, the structure of the taper sleeve and the mud crushing cutter and the position relation between the taper sleeve and the mud crushing cutter are changed, the mud is prevented from being turned over outwards into clusters, the mud is even, most of the mud does not contact with the upper-level receiving box, the probability of blocking vacuum and jacking is very low, the original mud adjusting flange is replaced by adjusting the entering amount of the mud by increasing or decreasing the quantity of the mud crushing cutters, the mud is evenly divided, the air in the mud is more easily pumped out, the compactness of the mud bar formed by extrusion in the next procedure is higher and more uniform, and the quality of the finally obtained brick is better. Prevent mud material from splashing, make evacuation equipment life longer, practice thrift cost of maintenance.
3. In the invention, a sealable cavity is formed among the front sealing cover, the shaft sleeve, the bearing cover and the bearing cup. The observation control device arranged on the bearing cup can reflect the sealing capability of the vacuum sealing piece of the front-stage sealing cover, and can judge the working state of the vacuum sealing piece according to the size of air leakage and the pressure difference of two sides of the vacuum sealing piece to provide a basis for maintenance time. When the valve on the bearing cup is closed (normally open), the communicated cavity can form a sealing cavity, and under the condition that the sealing of the front-stage sealing cover is damaged and normal production cannot be performed, the valve can be closed, the sealing of the bearing cover is utilized to establish a secondary sealing relative to the vacuum box body, so that the pressure of the vacuum box body is ensured to perform emergency production, and the contrast response yield is avoided due to maintenance. The independent lubricating oil filling device of the front-stage sealing cover can regularly fill oil, so that the relative cleanness of the lubricating oil of the vacuum sealing element is ensured, and the service life of the sealing element can be prolonged.
The technical features of the novel efficient spiral vacuum extrusion molding machine of the invention are further described below with reference to the accompanying drawings and specific examples.
Drawings
Fig. 1: the invention relates to a structural schematic diagram of a novel efficient spiral vacuum extrusion molding machine.
Fig. 2: the bearing chamber is schematically constructed.
Fig. 3 and fig. 4 are schematic views of the structure of the mud crushing knife.
Fig. 5: the use states of the mud crushing knife and the taper sleeve are schematically shown.
In the above figures, the reference numerals are as follows:
the device comprises a 1-vacuum box body, a 2-bearing cup, a 3-O-shaped ring, a 4-adapter, a 5-pressure gauge, a 6-valve II, a 7-bearing cover, an 8-O-shaped ring, a 9-lip seal ring, a 10-shaft sleeve, a 11-main shaft, a 12-O-shaped ring, a 13-front seal cover, a 14-felt seal ring, a 15-lip seal ring, a 16-oil ring, a 17-pipe joint, a 18-pressure oil pipe, a 19-valve I, a 20-oil pump, a 21-valve III, a 22-O-shaped ring, a 23-distance sleeve, a 24-flat key, a 25-bearing, a 26-mud cutter, a 27-mud cutter, a 28-mud cutter seat, a 29-bulge, a 30-front section, a 31-rear section and a 32-taper sleeve.
Detailed Description
The novel efficient spiral vacuum extrusion molding machine comprises a stirrer part and an extruder part, wherein the stirrer part comprises a motor, a pneumatic clutch, a speed reducer, a shaft coupling, a stirring cutter, a spiral, a taper sleeve, an inverted taper sleeve, a mud crushing cutter, a stirring main shaft, a feeding box, a stirring tank and a sealing mud cylinder, and the stirrer is used for uniformly mixing raw materials and simultaneously sealing the feeding box and the outside by utilizing the raw materials at the taper sleeve and the inverted taper sleeve; the utility model provides a garrulous mud sword include garrulous mud blade and garrulous mud blade seat, garrulous mud blade one end is for installing the link on garrulous mud blade seat, and the other end is the garrulous mud end that is used for garrulous mud, garrulous mud blade be shorter than original garrulous mud blade length, and be equipped with bulge, preceding tangent plane and back tangent plane on the garrulous mud end of this garrulous mud blade, bulge be located preceding tangent plane department, garrulous mud end of garrulous mud blade is for constituting "7" word shape by cuboid structure cutting, namely cuts in an edge department of this cuboid structure to constitute bulge and preceding tangent plane, cut and constitute back tangent plane with another edge that this edge is relative. One end of the taper sleeve extends outwards on the original basis to form a containing part of the mud crushing blade, the mud crushing blade is fixedly arranged on the mud crushing tool apron, and the mud crushing blade is positioned in the mud crushing tool containing part on the taper sleeve. The mud crushing cutter and the taper sleeve are improved in structure and function on the basis of the original structure, the other structures and installation modes are basically unchanged, the taper sleeve is installed on an upper-level material receiving box, the upper-level material receiving box is fixed on a middle box and connected with a taper cylinder, and the taper cylinder is connected with a stirring box. The mud crushing blade is fixed on the stirring shaft through the mud crushing blade seat, the stirring shaft is provided with a stirring blade and a conveying screw, the stirring shaft is fixed on the bearing seat, the main shaft is connected with the speed reducer through the coupler, and the speed reducer is connected with the motor.
The extruder part comprises a motor, a pneumatic clutch, a speed reducer, a vacuum box body, a bearing chamber, a main shaft, a mud pressing plate, a mud cylinder, a machine head, a forming die and a vacuum pump, and the extruder is used for forcedly extruding the raw materials stirred by the upper stage to form a billet with a required section shape. The motor is fixedly connected with the speed reducer through four sets of bolts, the uncoordinated situation of the whole machine caused by the separation of the motor mounting underframe and the extruder underframe is avoided, and the main shaft of the extruder part is rigidly connected with the speed reducer through the tensioning sleeve. The bearing chamber is fixed on the vacuum box body through bolted connection, the bearing chamber include bearing, distance cover, bearing cup, bearing cap, preceding seal lid, axle sleeve, oiling device and observation control device, the distance cover on the main shaft and be connected with the main shaft through the flat key, the bearing set up on the distance cover, the bearing cup cover on the bearing, the bearing cap set up on the main shaft and be connected with the bearing cup, bearing cap, axle sleeve, bearing set up in the bearing cup inside. The sealing device is characterized in that a groove for placing a felt ring oil seal is formed in the inner wall of the front-stage sealing cover, a connecting part connected with a bearing cup is arranged on the outer wall of the front-stage sealing cover, a boss for placing a lip-shaped sealing ring is arranged on the front-stage sealing cover, a stepped spigot I used for being connected with a distance sleeve is arranged at one end of the shaft sleeve, threads are arranged on the spigot I, a spigot II corresponding to the spigot I is arranged at one end of the distance sleeve, threads are also arranged on the spigot II, the shaft sleeve is sleeved on the main shaft and is in threaded connection with the distance sleeve, the front-stage sealing cover is sleeved on the shaft sleeve and is in airtight contact with the shaft sleeve, and the front-stage sealing cover is positioned on one side of the bearing cover close to the vacuum box body. One end of the bearing cup is provided with a spigot connected with the front-stage sealing cover, and the front-stage sealing cover is also provided with a corresponding spigot. The front-stage sealing cover is in sealing connection with the bearing cup, the front-stage sealing cover is arranged at the outer end of the bearing cup and is positioned at one side of the bearing cup, a sealable chamber is formed among the front-stage sealing cover, the shaft sleeve, the bearing cover and the bearing cup, and the sealable chamber is a normal pressure chamber during normal production. The novel high-efficiency spiral vacuum extrusion molding machine has the advantages that the requirement of the high-efficiency spiral vacuum extrusion molding machine on the vacuum degree is met through the sealing between the front-stage sealing cover and the shaft sleeve, the original sealing piece is not subjected to negative pressure in the airtight cavity and only protects the bearing, the vacuum sealing performance of the original sealing piece is not changed, the service life of the original sealing piece is greatly prolonged due to improvement of the working environment of the original sealing piece, the safety and the service life of the bearing are also guaranteed, the airtight cavity is controllable, the airtight cavity is formed after the airtight cavity is isolated from the external atmosphere, the original sealing has the auxiliary sealing capability when the vacuum sealing of the front-stage sealing cover is effective, the sealing function of the original vacuum sealing is exerted after the vacuum sealing of the front-stage sealing cover fails, the vacuum requirement of the front-stage sealing cover and the shaft sleeve on the vacuum extruder is increased, the secondary vacuum sealing protection is achieved, and the airtight between the original bearing cover and the shaft sleeve is primary sealing. The bearing cover is sleeved on the shaft sleeve, a lip-shaped sealing ring is arranged between the bearing cover and the shaft sleeve for sealing, and an O-shaped ring is arranged between the bearing cover and the bearing cup. The sealing device is characterized in that a lip-shaped sealing ring and a felt-shaped sealing ring are arranged between the front-stage sealing cover and the shaft sleeve, a gap between the front-stage sealing cover and the shaft sleeve is sealed through the lip-shaped sealing ring and the felt-shaped sealing ring, the felt-shaped sealing ring is positioned at one end of the front-stage sealing cover, which is close to the vacuum box body, an opening of the lip-shaped sealing ring, which is close to the felt-shaped sealing ring, faces to the felt-shaped sealing ring, and openings of other lip-shaped sealing rings face to one end of the front-stage sealing cover, which is far away from the vacuum box body. The bearing cup is provided with an oil pipe through hole and an air flow through hole, and the front-stage sealing cover is provided with an oil through hole. The oiling device comprises an oil pump, a valve I and a pressure-resistant oil pipe, wherein one end of the pressure-resistant oil pipe is connected with the oil pump through the valve, the other end of the pressure-resistant oil pipe is positioned in a sealable cavity and is arranged on a front-stage sealing cover through a pipe joint, the front-stage sealing cover is provided with an oil through hole, the pressure-resistant oil pipe is communicated with a gap between the front-stage sealing cover and a shaft sleeve through the oil through hole, an oil ring is arranged in the gap between the front-stage sealing cover and the shaft sleeve, the oil ring is communicated with the pressure-resistant oil pipe, the oil ring is positioned between lip-shaped sealing rings, and the pressure-resistant oil pipe is arranged on a bearing cup through a conversion joint. The material extruded into the gap between the front-stage sealing cover and the shaft sleeve can be pushed back into the vacuum box body through the oiling device. The observation control device comprises an air pipe, a flowmeter, a pressure gauge and a valve II, wherein the flowmeter, the pressure gauge and the valve II are arranged on the air pipe, and two ends of the air pipe are communicated with the sealable chamber and the external atmosphere respectively. When the valve is used in daily life, the valve II is in an open state, the airtight chamber is communicated with the atmosphere through an air pipe on the valve II, the shaft sleeve rotates along with the main shaft, if the tightness between the front-stage sealing cover and the shaft sleeve is damaged, the airtight chamber is communicated with the vacuum box body, the air in the airtight chamber can form a negative pressure state due to the fact that the air is pumped away, at the moment, the leakage air quantity is displayed due to the fact that the external air enters the airtight chamber through the flowmeter, and the damage degree of the tightness can be judged according to the air flow. The valve II can be closed at this moment, but airtight cavity changes airtight cavity into airtight cavity because preceding sealed lid seal is destroyed vacuum box and airtight cavity link up mutually and form the negative pressure cavity, but be equivalent to this airtight cavity and vacuum box as an organic whole promptly, can judge the pressure differential of two rooms through the manometer in the short time when closing valve II, start foretell one-level seal when closing valve II, at this moment because of the requirement of foretell one-level seal to the vacuum degree novel high-efficient spiral vacuum extrusion molding machine can resume normal production again, prevent to shut down the maintenance suddenly and bring the loss for the production, the maintenance time arrangement of being convenient for has guaranteed. An O-shaped ring is arranged at the joint of the front sealing cover and the bearing cup. An O-shaped ring is arranged between the shaft sleeve and the main shaft. An O-shaped ring is arranged at the joint of the bearing cover and the bearing cup.
Claims (5)
1. A novel high-efficiency spiral vacuum extrusion molding machine, which comprises a stirrer part and an extruder part;
the stirrer part comprises a motor, a pneumatic clutch, a speed reducer, a coupler, a stirring knife, a screw, a taper sleeve, an inverted taper sleeve, a mud crushing knife, a stirring main shaft, a feeding box, a stirring tank and a sealing mud cylinder, wherein the stirrer plays a role in uniformly mixing raw materials and simultaneously forms sealing between the feeding box and the outside by utilizing the raw materials at the positions of the taper sleeve and the inverted taper sleeve;
the extruder part comprises a motor, a pneumatic clutch, a speed reducer, a vacuum box body, a bearing chamber, a main shaft, a mud pressing plate, a mud cylinder, a machine head, a forming die and a vacuum pump, and is used for forcedly extruding raw materials subjected to upper-level stirring to form a blank bar with a required section shape through the forming die, wherein the bearing chamber is sealed and fixed on the vacuum box body and is connected with the main shaft through bolts, the bearing chamber comprises a bearing, a distance sleeve, a bearing cup and a bearing cover, the distance sleeve is sleeved on the main shaft and is connected with the main shaft through a flat key, the bearing is arranged on the distance sleeve, the bearing cup is sleeved on the bearing, and the bearing cover is arranged on the main shaft and is connected with the bearing cup;
the method is characterized in that: in the mixer part, one end of the taper sleeve extends outwards to form a containing part of the mud crushing blade, and the mud crushing blade is arranged in the taper sleeve and is positioned in the containing part; in the extruder part, the bearing chamber also comprises a front-stage sealing cover and a shaft sleeve, the shaft sleeve is sleeved on the main shaft and is connected with the distance sleeve, the front-stage sealing cover is sleeved on the shaft sleeve and is in airtight contact with the shaft sleeve, the front-stage sealing cover is in sealing connection with the bearing cup, a sealable cavity is formed among the front-stage sealing cover, the shaft sleeve, the bearing cover and the bearing cup, the motor is fixedly connected with the speed reducer through four sets of bolts, and the main shaft of the extruder part is rigidly connected with the speed reducer through a tension sleeve.
2. The novel efficient spiral vacuum extrusion molding machine according to claim 1, wherein: in the extruder part, the hole inner wall of the bearing chamber front-stage sealing cover is provided with a groove for placing a felt ring oil seal, the end face of the front-stage sealing cover is provided with a connecting part connected with a bearing cup, the front-stage sealing cover is provided with a boss for placing a lip-shaped sealing ring, one end of a shaft sleeve is provided with a stepped spigot I used for being connected with a distance sleeve, the spigot I is provided with threads, one end of the distance sleeve is provided with a spigot II corresponding to the spigot I, the spigot II is also provided with threads, and the shaft sleeve is sleeved on a main shaft and is in threaded connection with the distance sleeve.
3. The novel efficient spiral vacuum extrusion molding machine according to claim 1, wherein: in the mixer part, taper sleeve one end outwards extend and form the accommodation portion of garrulous mud blade, garrulous mud blade set up in the taper sleeve and be located the accommodation portion, be equipped with bulge, preceding tangent plane and back tangent plane on garrulous mud end of garrulous mud blade, the bulge be located preceding tangent plane department.
4. The novel efficient spiral vacuum extrusion molding machine according to claim 1, wherein: in the extruder part, the bearing chamber also comprises an observation control device, the observation control device comprises an air pipe, a flowmeter, a pressure gauge and a valve II, the flowmeter, the pressure gauge and the valve II are arranged on the air pipe, and two ends of the air pipe are respectively communicated with the sealable chamber and the external atmosphere.
5. The novel efficient spiral vacuum extrusion molding machine according to claim 1, wherein: in the extruder part, the bearing chamber also include oiling device, this oiling device includes oil pump, valve I and withstand voltage oil pipe, withstand voltage oil pipe one end be connected with the oil pump through the valve, the other end is located can airtight cavity to set up in preceding stage seal cover through the coupling, preceding stage seal cover on be equipped with the oil through-hole, withstand voltage oil pipe link up with the oil ring between preceding stage seal cover and the axle sleeve through the oil through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710615584.7A CN107322765B (en) | 2017-07-26 | 2017-07-26 | Novel high-efficient spiral vacuum extrusion molding machine |
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| Application Number | Priority Date | Filing Date | Title |
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