CN112623650B - Screw conveyer - Google Patents
Screw conveyer Download PDFInfo
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- CN112623650B CN112623650B CN202011510471.9A CN202011510471A CN112623650B CN 112623650 B CN112623650 B CN 112623650B CN 202011510471 A CN202011510471 A CN 202011510471A CN 112623650 B CN112623650 B CN 112623650B
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- lubricating
- self
- ring
- tail end
- mechanical seal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/02—Lubricating devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The application relates to a screw conveyor, including: the device comprises a main case, a spiral body and a power source, wherein the spiral body is rotatably arranged in the main case, one end of the spiral body is connected with the power source, the power source drives the spiral body to rotate, a tail end case is fixedly arranged at one end of the main case, which is far away from the power source, an opening is arranged at one end of the tail end case, which is close to the main case, and is communicated with the inside of the main case, discharge ports are formed in the peripheral side of the tail end case, and an installation cylinder is fixedly arranged in the tail end case; the one end fixed mounting that the power supply was kept away from to the spirochaeta has a pivot, sets up the installation cavity in the installation section of thick bamboo, and the opening of installation cavity arranges towards the spirochaeta, and the pivot is partly inserted in the installation cavity, is provided with the sealing ring in the pivot, and the opening of sealing ring seal installation cavity is provided with self-lubricating structure between pivot and the installation section of thick bamboo, and self-lubricating structure is located between the internal perisporium of the periphery wall of pivot and installation cavity. The self-lubricating sealing device has the advantages of self-lubricating function, better sealing performance, almost maintenance-free effect and longer service life.
Description
Technical Field
The application relates to the technical field of feeding mechanical equipment, in particular to a spiral conveyor.
Background
The screw conveyer is a machine which utilizes a motor to drive a screw to rotate and push materials so as to realize the conveying purpose.
The ash-adding screw conveyor is one of screw conveyors, the ash-adding screw conveyor is a main accessory equipment of a dry method ash-adding screw conveyor in an ammonia-soda process alkali-making process, the dry method ash-adding screw conveyor is a main accessory equipment of a dry method distillation process in the ammonia-soda process alkali-making process, in order to smoothly send lime powder into a pre-ash barrel, a discharge port at the tail part of the ash-adding screw conveyor must extend into the pre-ash barrel, and the working environment conditions of the ash-adding screw conveyor in the barrel are as follows: the top is sprayed with preheated mother liquor at 90-95 deg.C, and the gas phase zone also contains a large amount of mixed gas of steam and ammonia.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the tail bearing is easy to damage due to severe conditions, when the tail bearing is worn, the spiral body sinks, the swinging amount is large, the sealing failure is easy to cause, and the lime powder enters the bearing box to damage the bearing and influence the normal use of the screw conveyor.
Disclosure of Invention
In order to improve the problem that common screw conveyer's afterbody bearing damaged easily under adverse conditions, this application provides a screw conveyer.
The application provides a screw conveyer adopts following technical scheme:
a screw conveyor comprising: the host machine comprises a host machine shell, a spiral body and a power source, wherein the spiral body is rotatably arranged in the host machine shell, two ends of the spiral body extend out of two ends of the host machine shell, one end of the spiral body is connected with the power source, the power source drives the spiral body to rotate,
a tail end shell is fixedly installed at one end, far away from the power source, of the main case, the end, far away from the main case, of the tail end shell is arranged in a sealing mode, the tail end shell is arranged close to an opening at one end of the main case and communicated with the interior of the main case, discharge ports are formed in the peripheral side of the tail end shell, and an installation barrel is fixedly installed in the tail end shell;
the spirochete is kept away from the one end fixed mounting of power supply has the pivot, set up the installation cavity in the installation section of thick bamboo, the opening orientation of installation cavity the spirochete is arranged, pivot some inserts in the installation cavity, be provided with the sealing ring in the pivot, the sealing ring is sealed the opening of installation cavity, the pivot with be provided with self-lubricating structure between the installation section of thick bamboo, self-lubricating structure is located the periphery wall of pivot with between the internal perisporium of installation section of thick bamboo.
By adopting the technical scheme, compared with a common screw conveyor, the screw conveyor has the advantages that a tail bearing is cancelled, a tail end shell, an installation cylinder, a rotating shaft and a self-lubricating structure are added, the self-lubricating structure is used for replacing the tail bearing, the effect of reducing the rotating friction is also achieved, the self-lubricating structure is isolated outside a severe environment (namely in an installation cavity) due to the matching effect of the sealing ring and the installation cylinder, the damage speed of the self-lubricating structure is reduced, and the service life of the self-lubricating structure is prolonged; self-lubricating structure can rotate and produce self-lubricating powder along with the pivot in the use, to sum up, can almost can not add lubricating oil or change maintenance work such as damaging accessories in several years, not fragile even need not maintain the prerequisite under of self-lubricating structure, realized "non-maintaining" purpose.
Preferably, self-lubricating structure includes self-lubricating bearing and self-lubricating mechanical seal, self-lubricating bearing fixed mounting in the installation cavity, the pivot runs through in proper order self-lubricating mechanical seal self-lubricating bearing, self-lubricating mechanical seal presss from both sides and establishes the internal perisporium of installation section of thick bamboo with between the periphery wall of pivot.
By adopting the technical scheme, the rotating shaft can directly contact and rub the self-lubricating bearing in the rotating process of the mounting cylinder, self-lubricating powder generated by the friction of the self-lubricating bearing has a good self-lubricating effect, and the friction loss is reduced, so that compared with a common bearing structure, the self-lubricating bearing does not need to be frequently added with lubricating oil, is not easy to damage and has longer service life; self-lubricating mechanical seal will seal from the lubricating bearing in the installation section of thick bamboo, under adverse circumstances, self-lubricating bearing can not receive the interference of external adverse conditions, self also has self-lubricating effect simultaneously, so self-lubricating mechanical seal is difficult because of rotating for a long time or because of rotating at a high speed and wearing and tearing, self-lubricating mechanical seal compares with ordinary mechanical seal, longer life has, sealed effect is also more of a specified duration, almost can not add lubricating oil or change maintenance work such as damage accessories, further realized "non-maintaining" purpose.
Preferably, the self-lubricating mechanical seal comprises a moving ring and a stationary ring, a self-lubricating ring is arranged between the moving ring and the stationary ring, the surface hardness of the moving ring and the surface hardness of the stationary ring are both greater than the surface hardness of the self-lubricating ring, sulfide is added into ductile iron/nodular cast iron/alloy steel until the molten steel is saturated to prepare the self-lubricating ring, the sulfur content in the self-lubricating ring is 0.9% -2.5%, the rotating shaft sequentially penetrates through the moving ring, the self-lubricating ring and the stationary ring, and the stationary ring is fixed in the tail end shell.
Through adopting above-mentioned technical scheme, because the self-lubricating ring presss from both sides and establishes between rotating ring and quiet ring, and the sulphur content in the self-lubricating ring is than higher, the surface hardness of rotating ring and quiet ring is bigger, so in the course of the work, two terminal surfaces of self-lubricating ring can wear earlier than the contact surface of rotating ring and quiet ring, the produced tiny self-lubricating powder of wearing and tearing has good self-lubricating effect, thereby reduce the wearing and tearing speed of rotating ring and quiet ring by a wide margin, the effect of the contact surface of protection rotating ring and quiet ring has been played, one or two years or even longer time under the general condition, the rotating ring, quiet ring and self-lubricating ring can not be worn and torn to very thin state fast, the life of this self-lubricating mechanical seal has been prolonged, need not staff to spend a large amount of time to change mechanical seal, reduce the maintenance cost by a wide margin.
Preferably, the installation cylinder is provided with an inner circumferential wall provided with an inner circular step, the inner circular step is close to the self-lubricating bearing, one end of the self-lubricating mechanical seal is flush with the inner circular step, and the static ring is fixed on the inner circular step.
Through adopting above-mentioned technical scheme, at the pivot rotation in-process, there can be quiet ring extrusion to the trend of self-lubricating bearing inevitable, and because the material of self-lubricating bearing mainly is copper and graphite, the texture is all softer, so the self-lubricating bearing is easily received the extrusion and is out of shape the damage, interior round step not only provides the mounted position for quiet ring, interior round step can prevent that quiet ring from extruding self-lubricating bearing moreover, has prolonged self-lubricating bearing's life, and the design is more exquisite.
Preferably, the inner annular wall of the self-lubricating ring is provided with 3-8 lubricating grooves, the lubricating grooves are arranged along the direction of the central axis of the self-lubricating ring, two ends of each lubricating groove are respectively communicated to two end faces of the self-lubricating ring, and the lubricating grooves are arranged on the inner annular wall of the self-lubricating ring at equal intervals.
By adopting the technical scheme, the lubricating groove can be used for fine self-lubricating powder to pass through and can also be used for other lubricating media such as lubricating oil to pass through, so that the aim of more uniform lubricating effect is fulfilled, the abrasion speed of the movable ring, the static ring and the self-lubricating ring can be reduced, and the service life of the self-lubricating mechanical seal can be further prolonged; under the condition that the number of the lubricating grooves is less than 3, the quick circulation of a lubricating medium is not facilitated, the lubricating effect is influenced, under the condition that the number of the lubricating grooves is more than 8, the manufacturing cost of the self-lubricating ring is obviously increased, and the self-lubricating ring does not have the necessity of increasing the number, so that the number of the lubricating grooves is preferably 3-8; the equal-interval symmetrical arrangement of the plurality of lubricating grooves can ensure that the gravity center of the self-lubricating ring is uniform, further slows down the abrasion speed of the self-lubricating ring, and further prolongs the service life of the self-lubricating mechanical seal.
Preferably, the quiet ring is kept away from a side end face protrusion of self-lubricating ring is provided with first annular step, the cover is equipped with first sealing washer on the first annular step, the inner ring wall intermediate position of rotating ring is provided with the annular, be provided with the second sealing washer in the annular.
Through adopting above-mentioned technical scheme, first sealing washer has effectively promoted the sealed effect that this self-lubricating mechanical seal is close to quiet ring one side, and the second sealing washer has promoted the sealed effect that this self-lubricating mechanical seal is close to rotating ring one side, and the produced tiny self-lubricating powder of a small amount that the second sealing washer can also effectively avoid self-lubricating ring wearing and tearing to run off moreover, has further prolonged this self-lubricating mechanical seal's life.
Preferably, the self-lubricating mechanical seal still includes that elasticity compresses tightly the piece, elasticity compresses tightly the piece including solid fixed ring and spring, gu be provided with a plurality of machine meter screws on the fixed ring, gu fixed ring passes through machine meter screw fixation is in the pivot, the spring clamp is located the rotating ring with gu between the fixed ring.
Through adopting above-mentioned technical scheme, after solid fixed ring and axis of rotation are fixed, gu fixed ring has the effect that separates the fender spring, the elastic force of spring can order about the rotating ring and have the trend that is close to quiet ring, thereby realize the purpose of quiet ring and rotating ring cooperation clamp self-lubricating ring, be favorable to two terminal surfaces of self-lubricating ring to laminate smoothly with the contact surface of quiet ring and rotating ring, when the axis of rotation rotates, be favorable to two terminal surfaces of self-lubricating ring by the friction, promote tiny self-lubricating powder to produce, this self-lubricating mechanical seal's life has further been prolonged.
Preferably, a reinforcing plate is arranged between the peripheral wall of the mounting cylinder and the peripheral wall of the tail end shell, and the reinforcing plate and the discharge port are respectively located on two opposite sides of the mounting cylinder.
Through adopting above-mentioned technical scheme, the gusset plate can further be as an organic whole with the connection of installation section of thick bamboo and tail end shell, is favorable to promoting the structural stability of an installation section of thick bamboo, is favorable to the pivot to rotate steadily in an installation section of thick bamboo, and the gusset plate can not block the material moreover and discharge from the discharge gate.
Preferably, be provided with the screw hole on the tail-end shell, be provided with on the installation section of thick bamboo with the screw hole corresponds the through-hole of arranging, and this screw conveyer still includes the fuel feeding piece, the fuel feeding piece with the discharge gate is located respectively the relative both sides of installation section of thick bamboo, the fuel feeding piece includes hollow tube, oil cup and bowl cover, hollow tube screw assembly in screw hole department, the one end of hollow tube is passed the through-hole is stretched into in the installation cavity, the oil cup is located the other end of hollow tube and with the hollow tube is linked together, bowl cover screw assembly in the opening part of oil cup.
Through adopting above-mentioned technical scheme, on self-lubricating bearing and self-lubricating mechanical seal self have good self-lubricating function's basis, the fuel feeding spare can be to the indoor additional lubrication of installation cavity, has further prolonged self-lubricating bearing and self-lubricating mechanical seal's life, reduces and maintains the number of times, by the common fuel feeding spare that constitutes of hollow tube, oil cup and bowl cover moreover, simple structure, the installation is firm, and it is very convenient to add lubricating oil.
Preferably, the internal perisporium of tail-end shell is provided with the excircle step, the excircle step is located the opening part of installation cavity, the excircle step with press from both sides between the sealing ring and be equipped with the felt packing ring.
Through adopting above-mentioned technical scheme, the felt washer has promoted the leakproofness between tail end shell and the sealing ring, and under adverse circumstances, it is indoor that effective tissue impurity gets into the installation cavity, further has the effect of protection self-lubricating structure.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the tail bearing is replaced by the self-lubricating structure, the effect of reducing the rotational friction is also achieved, the self-lubricating structure is isolated outside the severe environment (namely in the installation cavity) under the matching effect of the sealing ring and the installation cylinder, the damage speed of the self-lubricating structure is reduced, the service life of the self-lubricating structure is prolonged, self-lubricating powder can be generated along with the rotation of the rotating shaft in the use process of the self-lubricating structure, and maintenance work such as adding lubricating oil or replacing damaged parts and accessories is almost not needed for several years;
2. self-lubricating powder generated by friction of the self-lubricating bearing has a good self-lubricating effect, reduces friction loss, is not easy to damage and has a longer service life, the self-lubricating mechanical seal seals the self-lubricating bearing in the mounting cylinder, the self-lubricating bearing cannot be interfered by external severe conditions under severe environment, and meanwhile, the self-lubricating mechanical seal also has the self-lubricating effect, so the self-lubricating mechanical seal is not easy to wear due to long-term rotation or high-speed rotation;
3. the self-lubricating ring presss from both sides and establishes between rotating ring and quiet ring, and the sulphur content in the self-lubricating ring is than higher moreover, and the surface hardness of rotating ring and quiet ring is bigger, so in the course of the work, two terminal surfaces of self-lubricating ring can wear earlier than the contact surface of rotating ring and quiet ring, and the produced tiny self-lubricating powder that wears out has good self-lubricating effect to reduce substantially the wearing and tearing speed of rotating ring and quiet ring, played the effect of the contact surface of protection rotating ring and quiet ring.
Drawings
Fig. 1 is a schematic structural view of a screw conveyor according to an embodiment of the present application.
Fig. 2 is an exploded view of a self-lubricating structure according to an embodiment of the present application.
Fig. 3 is an exploded view of a self-lubricating mechanical seal in accordance with an embodiment of the present application.
Fig. 4 is a schematic structural view of a tail end housing and an oil supply member of an embodiment of the present application.
Description of reference numerals: 101. a main chassis; 102. a helical body; 103. a power source; 104. a tail end housing; 105. a discharge port; 106. mounting the cylinder; 107. a rotating shaft; 108. a seal ring; 109. a self-lubricating bearing; 110. self-lubricating mechanical seal; 111. an inner circular step; 112. a reinforcing plate; 113. an outer circle step; 114. a felt washer; 115. sealing the oil tank; 1. a moving ring; 11. a second annular step; 2. a stationary ring; 21. a first annular step; 3. a self-lubricating ring; 31. a lubrication groove; 32. chamfering; 4. a first seal ring; 5. a second seal ring; 6. an elastic pressing member; 61. a fixing ring; 611. a third annular step; 62. a spring; 63. a machine-meter screw; 7. an oil supply member; 71. a hollow tube; 72. an oil cup; 73. a cup cover.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses screw conveyer is applicable to the adverse circumstances of medium and low speed rotation. Referring to fig. 1 and 2, the screw conveyor includes: the main frame 101, the spiral body 102 and the power source 103, the spiral body 102 is rotatably installed in the main frame 101, and both ends of the spiral body 102 extend out of both ends of the main frame 101, one end of the spiral body 102 is connected with the power source 103, the power source 103 drives the spiral body 102 to rotate, the power source 103 is specifically a driving motor, and the spiral body 102 is specifically composed of a cylindrical shaft and spiral blades spirally arranged on the outer circumferential wall of the cylindrical shaft.
A tail end shell 104 is fixedly installed at one end, far away from the power source 103, of the main case 101, the tail end shell 104 and the main case 101 are hermetically installed through a flange structure and a plurality of groups of bolts and nuts, one end, far away from the main case 101, of the tail end shell 104 is hermetically arranged (the sealing structure at the position is that a round sealing plate is fixedly installed through four bolts, detailed figure 1), one end, close to the main case 101, of the tail end shell 104 is opened and arranged and is communicated with the inside of the main case 101, a discharge hole 105 is formed in the peripheral side of the tail end shell 104, an installation barrel 106 is fixedly installed in the tail end shell 104, and the main case 101, the tail end shell 104 and the installation barrel 106 are all made of cast iron.
One end fixed mounting that the power supply 103 was kept away from to the spirochaeta 102 has a pivot 107, set up the installation cavity in the installation section of thick bamboo 106, the opening of installation cavity arranges towards spirochaeta 102, pivot 107 partly inserts in the installation cavity, be provided with sealing ring 108 on the pivot 107, the opening of sealing ring 108 seal installation cavity, be provided with self-lubricating structure between pivot 107 and the installation section of thick bamboo 106, self-lubricating structure is located between the internal perisporium of the periphery wall of pivot 107 and installation section of thick bamboo 106. The screw conveyor further comprises an oil supply part 7 and a sealing oil tank 115, the oil supply part 7 and the sealing oil tank 115 are respectively located at two ends of the spiral body 102, the oil supply part 7 is used for providing lubricating oil for a self-lubricating structure, a common bearing is installed at one end, close to the power source 103, of the spiral body 102, the sealing oil tank 115 wraps the common bearing, more lubricating oil is arranged in the sealing oil tank 115, and the sealing oil tank is enough for the common bearing to be used for more than 3 years.
The self-lubricating structure includes self-lubricating bearing 109 and self-lubricating mechanical seal 110, and self-lubricating bearing 109 is preferred graphite copper sheathing in this embodiment, and self-lubricating bearing 109 and material are unanimous with the material of following self-lubricating ring 3 (see in detail in fig. 3) in other embodiments, and self-lubricating bearing 109 fixed mounting is in the installation cavity, and self-lubricating mechanical seal 110, self-lubricating bearing 109 run through in proper order in pivot 107, and self-lubricating mechanical seal 110 presss from both sides and establishes between the internal perisporium of installation section of thick bamboo 106 and the periphery wall of pivot 107.
Referring to fig. 2 and 3, the self-lubricating mechanical seal 110 includes a moving ring 1, a stationary ring 2, a self-lubricating ring 3, a first seal ring 4, a second seal ring 5, and an elastic pressing member 6. The internal diameter and the external diameter of rotating ring 1, quiet ring 2, self-lubricating ring 3 are all unanimous, and this self-lubricating mechanical seal during operation, and rotating ring 1, quiet ring 2, self-lubricating ring 3 and elasticity compress tightly 6 and all wear to locate a rotation axis on, and on rotating ring 1 was fixed in the equipment main part, the preparation material of rotating ring 1 and quiet ring 2 was one of following material: hard alloy, alloy steel, high-chromium iron, silicon carbide, alumina, zirconia or boron nitride and the like.
The surface hardness of the movable ring 1 and the static ring 2 is greater than that of the self-lubricating ring 3, the surface roughness of the self-lubricating ring 3 is greater than that of the movable ring 1 and the static ring 2, and the self-lubricating ring 3 is roughly produced by the following process: sulfide is added to the ductile iron/nodular cast iron/alloy steel to a saturation state, the sulfur content in the self-lubricating ring 3 is between 0.9% and 2.5%, and the width of the self-lubricating ring 3 in the direction of the central axis is 12 mm (in other embodiments, the width may also be 10 mm, 11 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, or 20 mm).
The self-lubricating ring 3 comprises the following components, by mass, 2.5-3.2% of C, 1.0-1.8% of Si, 0.8-1.32% of Mn, 1.6-2.6% of Cr, 0.5-0.9% of Mo, 0.4-1.0% of W, 0.5-0.9% of Ae, 0.1-0.5% of V, 1.0-2.0% of S, less than or equal to 0.08% of P, more than or equal to 0.05% of Re, and the balance of Fe. In this example, the self-lubricating ring 3 comprises, in mass%, 3 parts of C, 1.5 parts of Si, 1 part of Mn, 2 parts of Cr, 0.7 parts of Mo, 0.8 parts of W, 0.6 parts of Ae, 0.4 parts of V, 1.5 parts of S, 0.07 parts of P, 0.09 parts of Re, and the balance of Fe. The self-lubricating ring 3 prepared by the formula has good tensile strength and lower surface hardness, and fine self-lubricating powder generated by surface abrasion has better lubricating property.
Be provided with 4 lubrication grooves 31 on the inner ring wall of self-lubricating ring 3 (the quantity of lubrication grooves 31 can be 1 in other embodiments, 2, 3, 5, 6, 7 or 8), lubrication grooves 31 arrange along the central axis direction of self-lubricating ring 3, and two ends of lubrication grooves 31 communicate respectively to two terminal surfaces from lubrication ring 3, and 4 lubrication grooves 31 equal interval arrange on the inner ring wall from lubrication ring 3, and the cross-section of lubrication grooves 31 is half circular shape.
All be provided with chamfer 32 from outer rampart edge department and the outer rampart edge department of lubricated ring 3, form certain cavity between chamfer 32 and the contact surface of rotating ring 1, quiet ring 2 of the inner rampart edge department of lubricated ring 3, can store some lubricating medium (for example wear and tear tiny self-lubricating powder or lubricating oil etc. that obtains), and this some lubricating medium can be used repeatedly for a long time, has played better lubricated effect.
First annular step 21 protrusion sets up (integrated into one piece) in quiet ring 2 and keeps away from a side end face of self-lubricating ring 3, first sealing washer 4 cover is located on first annular step 21, the cross-section of first sealing washer 4 and second sealing washer 5 is circular (the shape on this cross-section can also be for "Y" shape or "X" shape in other embodiments, the sealed effect that has the preferred equally), the inner ring wall intermediate position of rotating ring 1 is provided with the annular, second sealing washer 5 inlays locates in the annular, second sealing washer 5 protrusion is in the inner ring wall of rotating ring 1.
Elastic pressing member 6 is including solid fixed ring 61 and spring 62, spring 62 specifically is the alloy steel material and has high strength, gu fixed ring 61's preparation material and rotating ring 1, quiet ring 2 preparation material is the same, gu be provided with two machine meter screws 63 on the fixed ring 61 (the quantity of machine meter screw 63 can be 3 in other embodiments, 4 or more, and even interval arrangement), two machine meter screws 63 symmetrical arrangement, gu fixed ring 61 is provided with the screw hole with machine meter screw 63 looks adaptation, gu fixed ring 61 is fixed in the axis of rotation through machine meter screw 63 (machine meter screw 63 can be changed into the bayonet lock in other embodiments, gu fixed ring 61 is fixed in the axis of rotation through the bayonet lock), spring 62 presss from both sides and locates between rotating ring 1 and the fixed ring 61.
The end face of one side, far away from the self-lubricating ring 3, of the movable ring 1 is concavely provided with a second annular step 11, one end of the spring 62 is inserted into the second annular step 11, the end face of one side, close to the movable ring 1, of the fixed ring 61 is concavely provided with a third annular step 611, and the other end of the spring 62 is inserted into the second annular step 11.
The self-lubricating mechanical seal 110 is implemented according to the principle that after the fixed ring 61 and the rotating shaft are fixed, the fixed ring 61 has the function of blocking the spring 62, the elastic force of the spring 62 drives the movable ring 1 to have the tendency of approaching the fixed ring 2, so that the purpose of matching and clamping the self-lubricating ring 3 by the fixed ring 2 and the movable ring 1 is realized, the smooth joint of two end surfaces of the self-lubricating ring 3 and the contact surface of the fixed ring 2 and the movable ring 1 is facilitated, the sulfur content in the self-lubricating ring 3 is higher, the surface hardness of the movable ring 1 and the fixed ring 2 is higher, so that in the working process, the two end surfaces of the self-lubricating ring 3 are worn earlier than the contact surface of the movable ring 1 and the fixed ring 2, the fine self-lubricating powder generated by the wear has a good self-lubricating effect, the wear speed of the movable ring 1 and the fixed ring 2 is greatly reduced, the effect of protecting the contact surface of the movable ring 1 and the fixed ring 2 is achieved, and the effect of one or two years or even longer time under the general condition, the rotating ring 1, the static ring 2 and the self-lubricating ring 3 cannot be quickly abraded to a thin state, the service life of the self-lubricating mechanical seal 110 is prolonged, a large amount of time is not needed for workers to replace the mechanical seal, and the maintenance cost is low.
Referring to fig. 2 and 4, the inner circumferential wall of the mounting cylinder 106 is provided with an inner circular step 111, the inner circular step 111 is flush with one end of the self-lubricating bearing 109 close to the self-lubricating mechanical seal 110, and the stationary ring 2 (see fig. 3 in detail) is welded and fixed on the inner circular step 111.
Reinforcing plates 112 are welded between the outer peripheral wall of the mounting cylinder 106 and the outer peripheral wall of the tail end shell 104, the reinforcing plates 112 are steel plates, and the reinforcing plates 112 and the discharge port 105 are respectively located on two opposite sides of the mounting cylinder 106.
The tail end shell 104 is provided with a threaded hole, the mounting cylinder 106 is provided with a through hole arranged corresponding to the threaded hole, the oil supply piece 7 and the discharge hole 105 are respectively positioned at two opposite sides of the mounting cylinder 106, the oil supply piece 7 comprises a hollow tube 71, an oil cup 72 and a cup cover 73, the hollow tube 71 is assembled at the threaded hole in a threaded manner, one end of the hollow tube 71 penetrates through the through hole and extends into the mounting cavity, the oil cup 72 is arranged at the other end of the hollow tube 71 and communicated with the hollow tube 71, and the cup cover 73 is assembled at an opening of the oil cup 72 in a threaded manner.
An outer circle step 113 is arranged on the inner peripheral wall of the tail end shell 104, the outer circle step 113 is located at an opening of the installation cavity, a felt gasket 114 is clamped between the outer circle step 113 and the sealing ring 108, and the felt gasket 114 improves the sealing performance between the tail end shell 104 and the sealing ring 108.
The implementation principle of the screw conveyor in the embodiment of the application is as follows: compared with a common screw conveyor, the tail bearing is cancelled, the tail shell 104, the mounting cylinder 106, the rotating shaft 107 and the self-lubricating structure are added, the self-lubricating structure is used for replacing the tail bearing, the effect of reducing the rotating friction is also achieved, the self-lubricating structure is isolated outside the severe environment (namely in the mounting cavity) under the matching action of the sealing ring 108 and the mounting cylinder 106, the damage speed of the self-lubricating structure is reduced, and the service life of the self-lubricating structure is prolonged; the rotating shaft 107 can directly contact and rub the self-lubricating bearing 109 in the process of rotating in the mounting cylinder 106, and self-lubricating powder generated by rubbing of the self-lubricating bearing 109 has a good self-lubricating effect and reduces friction loss, so that compared with a common bearing structure, the self-lubricating bearing 109 is not required to be frequently added with lubricating oil, is not easy to damage and has a longer service life; self-lubricating mechanical seal 110 seals self-lubricating bearing 109 in installation section of thick bamboo 106, under adverse circumstances, self-lubricating bearing 109 can not receive the interference of external adverse conditions, self also has self-lubricating effect simultaneously, so self-lubricating mechanical seal 110 is difficult because of rotating for a long time or rotating at a high speed and wearing and tearing, self-lubricating mechanical seal 110 compares with ordinary mechanical seal, longer life has, sealed effect is also more of a specified duration, almost can not add maintenance work such as lubricating oil or change damage accessories in several years, further realized the purpose of "non-maintaining".
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A screw conveyor comprising: host computer shell (101), spirochaeta (102) and power supply (103), spirochaeta (102) rotate install in host computer shell (101) and its both ends stretch out the both ends of host computer shell (101), the one end of spirochaeta (102) with power supply (103) are connected, power supply (103) are driven spirochaeta (102) rotate, its characterized in that:
a tail end shell (104) is fixedly installed at one end, far away from the power source (103), of the main case (101), one end, far away from the main case (101), of the tail end shell (104) is arranged in a sealing mode, one end, close to the main case (101), of the tail end shell (104) is arranged in an opening mode and communicated with the interior of the main case (101), a discharge hole (105) is formed in the peripheral side of the tail end shell (104), and an installation barrel (106) is fixedly installed in the tail end shell (104);
a rotating shaft (107) is fixedly mounted at one end, away from the power source (103), of the spiral body (102), a mounting chamber is arranged in the mounting cylinder (106), an opening of the mounting chamber is arranged towards the spiral body (102), a part of the rotating shaft (107) is inserted into the mounting chamber, a sealing ring (108) is arranged on the rotating shaft (107), the sealing ring (108) seals the opening of the mounting chamber, a self-lubricating structure is arranged between the rotating shaft (107) and the mounting cylinder (106), and the self-lubricating structure is located between the outer peripheral wall of the rotating shaft (107) and the inner peripheral wall of the mounting cylinder (106);
the self-lubricating structure comprises a self-lubricating bearing (109) and a self-lubricating mechanical seal (110), the self-lubricating bearing (109) is fixedly installed in the installation cavity, the rotating shaft (107) sequentially penetrates through the self-lubricating mechanical seal (110) and the self-lubricating bearing (109), and the self-lubricating mechanical seal (110) is clamped between the inner peripheral wall of the installation cylinder (106) and the outer peripheral wall of the rotating shaft (107);
the self-lubricating mechanical seal (110) comprises a moving ring (1) and a static ring (2), a self-lubricating ring (3) is arranged between the moving ring (1) and the static ring (2), the surface hardness of the moving ring (1) and the surface hardness of the static ring (2) are both greater than that of the self-lubricating ring (3), sulfides are added into ductile iron/alloy steel until the surface hardness is saturated to prepare the self-lubricating ring (3), the sulfur content in the self-lubricating ring (3) is 0.9-2.5%, the rotating shaft (107) sequentially penetrates through the moving ring (1), the self-lubricating ring (3) and the static ring (2), and the static ring (2) is fixed in the tail end shell (104);
self-lubricating mechanical seal (110) still includes elasticity and compresses tightly piece (6), elasticity compresses tightly piece (6) including solid fixed ring (61) and spring (62), gu be provided with a plurality of machine meter screws (63) on fixed ring (61), gu fixed ring (61) passes through machine meter screw (63) are fixed in on pivot (107), spring (62) press from both sides and locate rotating ring (1) with gu between fixed ring (61).
2. The screw conveyor according to claim 1, wherein: the installation section of thick bamboo (106) be provided with the internal perisporium and be provided with interior round step (111), interior round step (111) with self-lubricating bearing (109) are close to the one end of self-lubricating mechanical seal (110) flushes mutually, quiet ring (2) are fixed in interior round step (111).
3. The screw conveyor according to claim 1, wherein: the self-lubricating ring is characterized in that 3-8 lubricating grooves (31) are formed in the inner annular wall of the self-lubricating ring (3), the lubricating grooves (31) are arranged along the direction of the central axis of the self-lubricating ring (3), two ends of each lubricating groove (31) are communicated to two end faces of the self-lubricating ring (3) respectively, and the lubricating grooves (31) are arranged on the inner annular wall of the self-lubricating ring (3) at equal intervals.
4. The screw conveyor according to claim 1, wherein: keep away from quiet ring (2) a side end face protrusion of self-lubricating ring (3) is provided with first annular step (21), the cover is equipped with first sealing washer (4) on first annular step (21), the interior rampart intermediate position of rotating ring (1) is provided with the annular, be provided with second sealing washer (5) in the annular.
5. The screw conveyor according to claim 1, wherein: a reinforcing plate (112) is arranged between the peripheral wall of the mounting cylinder (106) and the peripheral wall of the tail end shell (104), and the reinforcing plate (112) and the discharge hole (105) are respectively positioned at two opposite sides of the mounting cylinder (106).
6. The screw conveyor according to claim 1, wherein: be provided with the screw hole on tail end shell (104), be provided with on installation section of thick bamboo (106) with the through-hole that the screw hole corresponds and arranges, this screw conveyer still includes oil feed spare (7), oil feed spare (7) with discharge gate (105) are located respectively the relative both sides of installation section of thick bamboo (106), oil feed spare (7) are including hollow tube (71), oil cup (72) and bowl cover (73), hollow tube (71) screw assembly in screw hole department, the one end of hollow tube (71) is passed the through-hole stretches into in the installation cavity, oil cup (72) are located the other end of hollow tube (71) and with hollow tube (71) are linked together, screw assembly in the opening part of oil cup (72).
7. The screw conveyor according to claim 1, wherein: the internal perisporium of tail-end shell (104) is provided with excircle step (113), excircle step (113) are located the opening part of installation cavity, excircle step (113) with it is equipped with felt washer (114) to press from both sides between sealing ring (108).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510471.9A CN112623650B (en) | 2020-12-18 | 2020-12-18 | Screw conveyer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510471.9A CN112623650B (en) | 2020-12-18 | 2020-12-18 | Screw conveyer |
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| Publication Number | Publication Date |
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| CN112623650A CN112623650A (en) | 2021-04-09 |
| CN112623650B true CN112623650B (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011510471.9A Active CN112623650B (en) | 2020-12-18 | 2020-12-18 | Screw conveyer |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB626529A (en) * | 1946-05-21 | 1949-07-18 | John Berrien Rogers | Feeding granular materials into a head of pressure |
| CN200961694Y (en) * | 2006-08-31 | 2007-10-17 | 华南理工大学 | Self-tightening type mechanical sealing device |
| CN101683597A (en) * | 2008-09-23 | 2010-03-31 | 中国石油化工股份有限公司 | Horizontal mixing kettle |
| CN202251980U (en) * | 2011-09-09 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device |
| CN203906790U (en) * | 2014-05-28 | 2014-10-29 | 宁波东联密封件有限公司 | Mechanical seal with self-lubrication property |
| CN204004408U (en) * | 2014-07-23 | 2014-12-10 | 自贡蜜蜂牌机械密封有限责任公司 | Angle mount stirring type mechanical seal device |
| CN204784728U (en) * | 2015-06-02 | 2015-11-18 | 刘俊秀 | Rotating machinery's oil -sealing arrangement |
| CN204847191U (en) * | 2015-07-23 | 2015-12-09 | 湖南省湘维有限公司 | Bearing lubricating structure and screw conveyer |
| CN106743220A (en) * | 2016-11-29 | 2017-05-31 | 青岛碱业发展有限公司 | It is a kind of can self-lubricating plus grey conveying worm |
| CN207777640U (en) * | 2018-01-03 | 2018-08-28 | 迈安德集团有限公司 | A kind of embedded rotary valve |
| CN207879607U (en) * | 2017-12-30 | 2018-09-18 | 台州通力真空机械有限公司 | Water-ring vacuum pump |
| CN211449642U (en) * | 2019-12-02 | 2020-09-08 | 温州市正一机械密封件有限公司 | Mechanical seal lubricating device |
| CN211525545U (en) * | 2020-01-19 | 2020-09-18 | 福建南方路面机械股份有限公司 | Rotary sealing device for driving end of vibration exciter |
-
2020
- 2020-12-18 CN CN202011510471.9A patent/CN112623650B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB626529A (en) * | 1946-05-21 | 1949-07-18 | John Berrien Rogers | Feeding granular materials into a head of pressure |
| CN200961694Y (en) * | 2006-08-31 | 2007-10-17 | 华南理工大学 | Self-tightening type mechanical sealing device |
| CN101683597A (en) * | 2008-09-23 | 2010-03-31 | 中国石油化工股份有限公司 | Horizontal mixing kettle |
| CN202251980U (en) * | 2011-09-09 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device |
| CN203906790U (en) * | 2014-05-28 | 2014-10-29 | 宁波东联密封件有限公司 | Mechanical seal with self-lubrication property |
| CN204004408U (en) * | 2014-07-23 | 2014-12-10 | 自贡蜜蜂牌机械密封有限责任公司 | Angle mount stirring type mechanical seal device |
| CN204784728U (en) * | 2015-06-02 | 2015-11-18 | 刘俊秀 | Rotating machinery's oil -sealing arrangement |
| CN204847191U (en) * | 2015-07-23 | 2015-12-09 | 湖南省湘维有限公司 | Bearing lubricating structure and screw conveyer |
| CN106743220A (en) * | 2016-11-29 | 2017-05-31 | 青岛碱业发展有限公司 | It is a kind of can self-lubricating plus grey conveying worm |
| CN207879607U (en) * | 2017-12-30 | 2018-09-18 | 台州通力真空机械有限公司 | Water-ring vacuum pump |
| CN207777640U (en) * | 2018-01-03 | 2018-08-28 | 迈安德集团有限公司 | A kind of embedded rotary valve |
| CN211449642U (en) * | 2019-12-02 | 2020-09-08 | 温州市正一机械密封件有限公司 | Mechanical seal lubricating device |
| CN211525545U (en) * | 2020-01-19 | 2020-09-18 | 福建南方路面机械股份有限公司 | Rotary sealing device for driving end of vibration exciter |
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|---|---|
| CN112623650A (en) | 2021-04-09 |
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