CN105952636A - Novel self-lubricating and supporting type variable-volume two-screw pump - Google Patents
Novel self-lubricating and supporting type variable-volume two-screw pump Download PDFInfo
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- CN105952636A CN105952636A CN201610292279.4A CN201610292279A CN105952636A CN 105952636 A CN105952636 A CN 105952636A CN 201610292279 A CN201610292279 A CN 201610292279A CN 105952636 A CN105952636 A CN 105952636A
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- bearing
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- lubricating
- driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
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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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a novel self-lubricating and supporting type variable-volume two-screw pump and belongs to the technical field of screw pumps. A media input end is arranged on a left pump shell. A media output end is arranged on a right pump shell. A self-lubricating bearing device is arranged inside the junction of the left pump shell and the right pump shell. A variable-pitch driving screw and a variable-pitch driven screw are arranged in a pump body in a penetrating mode. A rear supporting cover is arranged at the end of the left pump shell in a connected mode. A driving gear and a driven gear engaged with the driving gear are arranged in the rear supporting cover. A rear end cover is arranged on the end face of the rear supporting cover. A front supporting cover is arranged at the end of the right pump shell in a connected mode. A front end cover is arranged on the end face of the front supporting cover. The head of the driving screw stretches out of the front end cover to serve as the power input end of the two-screw pump. The volume is changed by changing the fixed pitches of the screws so that deformation of the middle portions of the screws when the two-screw pump operates can be reduced, vibration and noise generated during gas-liquid medium delivery are reduced, and the transmission stability of the two-screw pump is improved; and the bearing capacity of the gears is improved, and accordingly, the working efficiency of the two-screw pump is improved.
Description
Technical field
The invention belongs to screw pump technology field, relate to the capacity new-type double screw pump of self-lubricating supporting, particularly relate to the supporting of a kind of bearing, wildhaber-novikov gear pump drive, the new-type double screw pump of capacity occasion.
Background technology
Quimby pump is a kind of positive displacement quantitative pump, and the screw rod in pump engages each other, and screw rod constitutes, with accommodating the hole wall of screw rod, the pump housing etc., the annular seal space being connected to each other one by one.The synchronized gear drive in end of two screw rods connects, and synchromesh gear is arranged in gear-box, has independent lubrication, separates with pump chamber.Synchromesh gear ensures static rotating relative to continuous of screw rod, so that annular seal space has no agitation ground and elapses the most forward, thus realizes pumping purpose.The outstanding feature of Quimby pump is to have good self-priming performance, it is possible to pulse free, continuously and smoothly feed flow, the pressure stability of its pumped (conveying) medium, constant flow, vibrate little, noise is low.The above-mentioned performance of Quimby pump, makes it have a wide range of applications field, is usually used in the every profession and trades such as oil field, oil refining, iron and steel, thermoelectricity, chemical industry, carries the most full-bodied liquid medium of various viscosity.
But its shortcoming is:
1. pumped (conveying) medium from input port to delivery outlet move time, the effective volume of pumped (conveying) medium volume in pump chamber keeps constant, only change in the input port of pump and delivery outlet position, so when input port and delivery outlet have bigger pressure reduction, especially during conveying gas, owing to gas easily compresses, the pressure at delivery outlet will not be the highest, easily produce surge, be substantially reduced the delivery efficiency of pump.
2. the structure of the synchronous gear transmission device used due to current Quimby pump is mainly spur gear, helical gear.Although spur-gear mechanism manufacture and assembly technology are fairly simple, but in gear engagement with when exiting, easily producing shock and vibration and noise, its bearing capacity is the most poor；Screw-wheel gearing overlap coefficient is big, stable drive, the strength of gear teeth are high, be suitable to heavy duty passes, noise is low, but helical teeth can produce axial force, assembly technology relatively spur gear complexity.
3. in Quimby pump work process, screw rod can be affected by the pressure of fluid, and screw rod can deform, and moderate finite deformation particularly can occur in the middle part of screw rod.
Summary of the invention
It is an object of the invention to for existing technical problem, the capacity new-type double screw pump of self-lubricating supporting is proposed, volume is changed by changing the fixing pitch of screw rod, make it possible to vibration and noise when reducing the deformation at the middle part of screw rod in Quimby pump work process and reduce transfer gas liquid medium, improve the stationarity of screw pump transmission, improve the bearing capacity of gear, thus improve the work efficiency of screw pump.
The technical scheme is that the capacity new-type double screw pump that self-lubricating supports, including Quimby pump housing；nullIt is characterized in that: described Quimby pump housing is connected and composed by left pump case and right pump case，Described left pump case is provided with medium input，Described right pump case is provided with medium outfan，It is provided with self-lubricating bearing device inside described left pump case and right pump case junction，Run through, in described left pump case and right pump case, active screw rod and the driven screw being provided with varying pitch，The outline of described active screw rod and driven screw matches with Quimby pump inner walls，Described left pump case end is connected with rear support lid，The driving gear and driven gear being meshed it is provided with in described rear support lid，Described driving gear is connected with described active screw acting，Described driven gear is connected with described driven screw effect，The end face of described rear support lid is provided with rear end cap，The end of described right pump case is connected with front support lid，The end face of described front support lid is provided with drive end bearing bracket，The head of described active screw rod stretches out the described drive end bearing bracket power intake as Quimby pump，Described rear end cap、Rear support lid、Left pump case、Right pump case、Front support lid and drive end bearing bracket form the cavity closed by mechanical seal.
Described active screw rod and driven screw are all the single-head screws of uniform varying pitch, and tooth form is trapezoidal, and actively screw rod is the stepped tooth of epirelief, and driven screw is recessed stepped tooth, and actively screw rod engages each other with driven screw.
Described uniform varying pitch is the change of the descending generation of pitch on active screw rod and driven screw, initial pitch is p, lift is d, and pitch is descending with p+d, p+ (n-1) d, p+ (n-2) d, p+ (n-3) d.
It is the most equal that described driving gear and driven gear are the modulus of Novikov gears with double circular arc tooth profiles, driving gear and driven gear, the number of teeth, and driving gear is connected with actively screw rod by geared sleeve, and geared sleeve passes through flat key and is connected with active screw rod.
Described driving gear and driven gear be axially respectively provided with lining and stripped nut.
Described self-lubricating bearing device is between left pump case and right pump case, and embeds in left pump case and right pump case；Self-lubricating bearing device is made up of bearing positioning device, the active lubrication bearing that is arranged in bearing positioning device and driven lubrication bearing and the catch that is connected with bearing positioning device；The both sides of self-lubricating bearing device have rectangular opening；Active lubrication bearing and driven lubrication bearing are connected and composed by dovetail manner with bottom half-bearing body by upper half bearing body.
The inwall of described active lubrication bearing and driven lubrication bearing is equipped with circular arc tank, the bar number of tank 6.
The bottom half-bearing body of described active lubrication bearing is flat, and the upper half bearing body of driven lubrication bearing is flat, and the planar base surface of two half-and-half bearing bodies contacts with each other to be formed and supports, to reduce the deformation in the middle part of screw rod.
The material of described upper half bearing body and bottom half-bearing body is ultra high molecular weight polyethylene material.
The middle part of described active screw rod and driven screw is plain shaft structure, and plain shaft structure forms matched in clearance with the internal diameter of active lubrication bearing, driven lubrication bearing.
nullThe invention have the benefit that the capacity new-type double screw pump that the self-lubricating that the present invention proposes supports，Novel structure，Operation principle is clear，Intermeshing master is have employed in structure、Driven varying pitch screw，Leading、Self-lubricating bearing device it is provided with in the middle part of driven screw，Actively screw rod with driven screw relative to backwards rotation，Pumped (conveying) medium enters from big pitch end，The cavity body that actively screw rod and driven screw and pump chamber are formed，Along with relatively rotating of screw rod，Thread constantly extrudes cavity body，Cavity body is made to move to fine pitch extreme direction，Until output，During this, the volume of cavity is gradually reduced，Give pumped (conveying) medium effective precommpression，Volume is changed by changing the fixing pitch of screw rod，Make it possible to reduce the deformation at the middle part of screw rod in Quimby pump work process、And vibration and noise during reduction transfer gas liquid medium、Improve the stationarity of screw pump transmission，Improve the bearing capacity of gear，Thus improve the work efficiency of screw pump.
Specifically have the beneficial effect that:
1. the pitch of the screw rod used uniformly diminishes, thus in pump chamber, pumped (conveying) medium is had precommpression, and this has inhibitory action to the surge of delivery outlet, so that the work of pump more flattens out surely, reduces vibration and noise.
2. using Double circular arc gear drive, its transmission is relatively steady, and vibration and noise are little.Additionally, due to its thickness at root of tooth is relatively big, its bearing capacity is the highest.
3. Quimby pump self-lubricating bearing makes to be formed between principal and subordinate's screw rod mutually to support, thus reduces the middle part deformation of screw rod, improves the work efficiency of Quimby pump.
4. the Quimby pump self-lubricating bearing in the present invention is manufactured by composite, can form one layer of lubricating water film at bearing surface during screw pump work, makes bearing form self-lubricating, reduces the abrasion of screw rod.
Accompanying drawing explanation
Fig. 1 is general assembly structural representation of the present invention.
Fig. 2 be medium of the present invention flow through self-lubricating bearing device flow to schematic diagram.
Fig. 3 is active screw rod and the driven screw engaging structure schematic diagram of varying pitch in the present invention.
Fig. 4 is to relate to other in the present invention to change screw pump volume method schematic diagram.
Fig. 5 is middle gear engaging structure schematic diagram of the present invention.
Fig. 6 is self-lubricating bearing apparatus structure schematic diagram in the present invention.
Fig. 7 is upper half bearing body and bottom half-bearing attachment structure schematic diagram in the present invention.
In figure: driven gear 1, driven gear lining 1-1, driven gear flat key 1-2, driving gear 2, driving gear lining 2-1, geared sleeve 2-2, fastening bolt 2-3, stripped nut 2-4, flat key 2-5, rear end cap 3, rear support lid 4, clamping screw 5, driven screw 6, actively screw rod 7, left pump case 8, self-lubricating bearing device 9, bearing positioning device 9-1, holding screw 9-2, upper half-and-half bearing 9-3, actively optical axis 9-4 in the middle of screw rod, bottom half-bearing 9-5, optical axis 9-6 in the middle of driven screw, catch 9-7, right pump case 10, front support lid 11, drive end bearing bracket 12, block bearing 13, medium input 14, medium outfan 15.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in figs. 1-7, the capacity new-type double screw pump of self-lubricating supporting, including Quimby pump housing；nullQuimby pump housing is connected and composed by left pump case 8 and right pump case 10，Left pump case 8 is provided with medium input 14，Right pump case 10 is provided with medium outfan 15，Left pump case 8 is provided with self-lubricating bearing device 9 inside right pump case 10 junction，Left pump case 8 runs through, in right pump case 10, active screw rod 7 and the driven screw 6 being provided with varying pitch，Actively the outline of screw rod 7 and driven screw 6 matches with Quimby pump inner walls，Left pump case 8 end is connected with rear support lid 4，The driving gear 2 and driven gear 1 being meshed it is provided with in rear support lid 4，Driving gear 2 is connected with active screw rod 7 effect，Driven gear 2 is connected with driven screw 6 effect，The end face of rear support lid 4 is provided with rear end cap 3，The end of right pump case 10 is connected with front support lid 11，The end face of front support lid 11 is provided with drive end bearing bracket 12，Actively the head of screw rod 7 stretches out the drive end bearing bracket 12 power intake as Quimby pump，Rear end cap 3、Rear support lid 4、Left pump case 8、Right pump case 10、Front support lid 11 and drive end bearing bracket 12 form the cavity closed by mechanical seal.
As shown in figs. 1-7, the capacity new-type double screw pump of self-lubricating supporting, actively screw rod 7 and driven screw 6 are all the single-head screws of uniform varying pitch, tooth form is trapezoidal, actively screw rod 7 is the stepped tooth of epirelief, and driven screw 6 is recessed stepped tooth, and actively screw rod 7 engages each other with driven screw 6；Uniformly varying pitch is the actively change of the descending generation of pitch on screw rod 7 and driven screw 6, initial pitch is p, and lift is d, and pitch is descending with p+d, p+ (n-1) d, p+ (n-2) d, p+ (n-3) d；Driving gear 2 and driven gear 1 are Novikov gears with double circular arc tooth profiles, and driving gear 2 and the modulus of driven gear 1, the number of teeth are the most equal, and driving gear 2 is connected with actively screw rod 7 by geared sleeve 2-2, and geared sleeve 2-2 is connected with active screw rod 7 by flat key 2-5；Driving gear 2 and driven gear 1 be axially respectively provided with lining 2-1 and stripped nut 2-4；Self-lubricating bearing device 9 is between left pump case 8 and right pump case 10, and embeds in left pump case 8 and right pump case 10；Self-lubricating bearing device 9 is made up of bearing positioning device 9-1, the active lubrication bearing that is arranged in bearing positioning device 9-1 and driven lubrication bearing and the catch 9-7 that is connected with bearing positioning device 9-1；The both sides of self-lubricating bearing device 9 have rectangular opening；Active lubrication bearing and driven lubrication bearing are connected and composed by dovetail manner with bottom half-bearing body 9-5 by upper half bearing body 9-3；The inwall of active lubrication bearing and driven lubrication bearing is equipped with circular arc tank, the bar number of tank 6；The bottom half-bearing body 9-5 of active lubrication bearing is flat, and the upper half bearing body 9-3 of driven lubrication bearing is flat, and the planar base surface of two half-and-half bearing bodies contacts with each other to be formed and supports, to reduce the deformation in the middle part of screw rod；The material of upper half bearing body 9-3 and bottom half-bearing body 9-5 is ultra high molecular weight polyethylene material；Actively the middle part of screw rod 7 and driven screw 6 is plain shaft structure, and plain shaft structure forms matched in clearance with the internal diameter of active lubrication bearing, driven lubrication bearing.
As in figure 2 it is shown, the capacity new-type double screw pump of self-lubricating supporting, for the ease of installing self-lubricating bearing device 9, Quimby pump housing is divided into 8,10 two parts.Input and outfan are respectively on housing 8 and housing 10, and liquid enters pump chamber through the entrance of screw pump housing 8, discharges from the outlet of housing 10, flows to as shown by the arrows in Figure 2.
As shown in Figure 3, the capacity new-type double screw pump of self-lubricating supporting, as a example by the pitch of active screw rod, screw pitch be initial pitch be p, lift is d, other capacity schemes are as shown in Fig. 4-a, 4-b, 4-c, Fig. 4-a is by changing the degree of depth of screw slot, and pairing screw rod increases and decreases △ d, Fig. 4-b respectively by changing the width of screw slot, pairing screw rod increases and decreases △ t, Fig. 4-c respectively and then realizes capacity by the tapering of screw rod.
As it is shown in figure 5, the capacity new-type double screw pump of self-lubricating supporting, housing 10 provides supporting with block bearing 13 for screw rod；Driving and driven screw rod 7 and 6 engages each other；Be connected with active screw rod 7 for driving gear 2, driving gear 2 is connected with actively screw rod 7 by geared sleeve 2-2, it is connected with flat key 2-5 between geared sleeve 2-2 with actively screw rod 7, for preventing driving gear 2 from moving axially, is axially respectively provided with lining 2-1 and stripped nut 2-4；Driven screw 6 is connected with driven gear 1 by key 1-2, for preventing driven gear 1 from moving axially, is axially respectively provided with lining 1-1 and stripped nut 1-4.
As shown in Figure 6, the capacity new-type double screw pump of self-lubricating supporting, is formed two each and every one integral bearings by upper half bearing body 9-3 and bottom half-bearing body 9-5 by joggle, and two integral bearings are placed in self-lubricating bearing positioner 9-1, thered is provided by positioner 9-1 and support, prevent bearing from moving radially；By holding screw 9-2, catch 9-7 is fixed on positioner 9-1, prevents bearing from moving axially.Self-lubricating bearing internal diameter is matched in clearance with the place of cooperation in the middle part of actively screw rod 7 and driven screw 6, and screw pump housing 8,10 interior groove of self-lubricating bearing positioner outline 9-1 and combination matches.Having rectangular opening in the both sides of self-lubricating bearing positioner 9-1 is easy to the circulation of liquid simultaneously.
When screw rod joggleword, flowing through the liquid of housing 8 and have rectangular opening by the both sides of self-lubricating bearing positioner 9-1 and be diverted to the intracavity of housing 10, then liquid converges from two ends and flows to outfan.Simultaneously because be easily deformed in the middle part of the effect screw rod of moment of torsion during engagement and pressure reduction, install and support for providing in the middle part of screw rod after self-lubricating bearing device, deformation can be effectively reduced.
As shown in Figure 1, the operation principle of the capacity new-type double screw pump of self-lubricating supporting is as follows: be provided with the varying pitch trapezoidal screw of two engagements in Quimby pump body, match between screw rod periphery and pump chamber, screw rod is provided with single head thread, big pitch is input port, and fine pitch one end is delivery outlet, and the pump housing is respectively arranged at two ends with support lid, the rotating shaft of screw rod is rotatably supported at support and covers, and actively an end cap is stretched out as power intake in the end of screw rod.During work, input power from active screw rod, driving gear is by the flat key transmission torque between active screw rod and geared sleeve, it is connected compression by fastening bolt between geared sleeve with driving gear, driving gear engages transmission torque with driven gear, driven gear transmits torque by the key between driven screw, synchromesh gear orders about driven screw relative to backwards rotation, along with relatively rotating of screw rod, constantly form the cavity volume of closing in the input side of big pitch, the gas outlet that cavity volume tapers into pitch is moved.In moving process, owing to pitch constantly reduces, the volume of unit cavity volume can be gradually reduced, and causes pressure constantly to rise, and can reach intended force value at delivery outlet.
Foregoing description is only the description to present pre-ferred embodiments; it it is not any restriction to the scope of the invention; the amendment that those skilled in the art is made according to foregoing; change the volume of Quimby pump especially by the change groove depth of screw slot, groove width or screw rod tapering, belong to the protection domain belonging to the present invention.
Claims (10)
1. the capacity new-type double screw pump of self-lubricating supporting, including Quimby pump housing；nullIt is characterized in that: described Quimby pump housing is connected and composed by left pump case (8) and right pump case (10)，Described left pump case (8) is provided with medium input (14)，Described right pump case (10) is provided with medium outfan (15)，It is provided with self-lubricating bearing device (9) inside described left pump case (8) and right pump case (10) junction，Run through, in described left pump case (8) and right pump case (10), active screw rod (7) and the driven screw (6) being provided with varying pitch，The outline of described active screw rod (7) and driven screw (6) matches with Quimby pump inner walls，Described left pump case (8) end is connected with rear support lid (4)，The driving gear (2) being meshed and driven gear (1) it is provided with in described rear support lid (4)，Described driving gear (2) is connected with the effect of described active screw rod (7)，Described driven gear (2) is connected with described driven screw (6) effect，The end face of described rear support lid (4) is provided with rear end cap (3)，The end of described right pump case (10) is connected with front support lid (11)，The end face of described front support lid (11) is provided with drive end bearing bracket (12)，The head of described active screw rod (7) stretches out the described drive end bearing bracket (12) power intake as Quimby pump，Described rear end cap (3)、Rear support lid (4)、Left pump case (8)、Right pump case (10)、Front support lid (11) and drive end bearing bracket (12) form the cavity closed by mechanical seal.
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterized in that: described active screw rod (7) and driven screw (6) are all the single-head screws of uniform varying pitch, tooth form is trapezoidal, actively screw rod (7) is the stepped tooth of epirelief, driven screw (6) is recessed stepped tooth, and actively screw rod (7) engages each other with driven screw (6).
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterized in that: described uniform varying pitch is actively screw rod (7) and the change of the upper descending generation of pitch of driven screw (6), initial pitch is p, lift is d, and pitch is descending with p+d, p+ (n-1) d, p+ (n-2) d, p+ (n-3) d.
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterized in that: described driving gear (2) and driven gear (1) are Novikov gears with double circular arc tooth profiles, driving gear (2) and the modulus of driven gear (1), the number of teeth are the most equal, driving gear (2) is connected with actively screw rod (7) by geared sleeve (2-2), and geared sleeve (2-2) is connected with actively screw rod (7) by flat key (2-5).
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterised in that: described driving gear (2) and driven gear (1) be axially respectively provided with lining (2-1) and stripped nut (2-4).
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterized in that: described self-lubricating bearing device (9) is between left pump case (8) and right pump case (10), and it is interior with right pump case (10) to embed left pump case (8)；Self-lubricating bearing device (9) is made up of bearing positioning device (9-1), the active lubrication bearing that is arranged in bearing positioning device (9-1) and driven lubrication bearing and the catch (9-7) that is connected with bearing positioning device (9-1)；The both sides of self-lubricating bearing device (9) have rectangular opening；Active lubrication bearing and driven lubrication bearing are connected and composed by dovetail manner with bottom half-bearing body (9-5) by upper half bearing body (9-3).
The capacity new-type double screw pump of self-lubricating the most according to claim 6 supporting, it is characterised in that: the inwall of described active lubrication bearing and driven lubrication bearing is equipped with circular arc tank, the bar number of tank 6.
The capacity new-type double screw pump of self-lubricating the most according to claim 6 supporting, it is characterized in that: the bottom half-bearing body (9-5) of described active lubrication bearing is flat, the upper half bearing body (9-3) of driven lubrication bearing is flat, the planar base surface of two half-and-half bearing bodies contacts with each other to be formed and supports, to reduce the deformation in the middle part of screw rod.
The capacity new-type double screw pump of self-lubricating the most according to claim 6 supporting, it is characterised in that: the material of described upper half bearing body (9-3) and bottom half-bearing body (9-5) is ultra high molecular weight polyethylene material.
The capacity new-type double screw pump of self-lubricating the most according to claim 1 supporting, it is characterized in that: the middle part of described active screw rod (7) and driven screw (6) is plain shaft structure, plain shaft structure forms matched in clearance with the internal diameter of active lubrication bearing, driven lubrication bearing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292279.4A CN105952636B (en) | 2016-05-05 | 2016-05-05 | The capacity new-type double screw pump of self-lubricating supporting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610292279.4A CN105952636B (en) | 2016-05-05 | 2016-05-05 | The capacity new-type double screw pump of self-lubricating supporting |
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| CN105952636A true CN105952636A (en) | 2016-09-21 |
| CN105952636B CN105952636B (en) | 2017-11-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387401A (en) * | 2017-08-10 | 2017-11-24 | 黄山市威格狮泵业有限公司 | A kind of high pressure Quimby pump |
| CN107588002A (en) * | 2017-10-16 | 2018-01-16 | 扬州日上真空设备有限公司 | A kind of Twin-screw vacuum pump of low noise |
Citations (8)
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| CN203308712U (en) * | 2013-06-07 | 2013-11-27 | 淄博瑞莱特真空设备有限公司 | Variable-pitch double-thread screw vacuum pump |
| CN205779670U (en) * | 2016-05-06 | 2016-12-07 | 扬州大学 | A kind of novel capacity Quimby pump |
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| US5667370A (en) * | 1994-08-22 | 1997-09-16 | Kowel Precision Co., Ltd. | Screw vacuum pump having a decreasing pitch for the screw members |
| CN1230242A (en) * | 1996-09-12 | 1999-09-29 | 爱特里尔斯布时股份公司 | Screw rotor set |
| CN201159172Y (en) * | 2008-02-01 | 2008-12-03 | 梁伯顺 | Improved structure of screw vacuum pump |
| CN201526451U (en) * | 2009-09-13 | 2010-07-14 | 王旭 | Novel double-screw pump provided with threaded sleeves with unequal pitches |
| CN102182680A (en) * | 2011-06-02 | 2011-09-14 | 重庆大学 | Multi-stage speed changing screw pump |
| CN102220974A (en) * | 2011-07-29 | 2011-10-19 | 四川省机械研究设计院 | Double-screw pump without bearing |
| CN203308712U (en) * | 2013-06-07 | 2013-11-27 | 淄博瑞莱特真空设备有限公司 | Variable-pitch double-thread screw vacuum pump |
| CN205779670U (en) * | 2016-05-06 | 2016-12-07 | 扬州大学 | A kind of novel capacity Quimby pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387401A (en) * | 2017-08-10 | 2017-11-24 | 黄山市威格狮泵业有限公司 | A kind of high pressure Quimby pump |
| CN107588002A (en) * | 2017-10-16 | 2018-01-16 | 扬州日上真空设备有限公司 | A kind of Twin-screw vacuum pump of low noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105952636B (en) | 2017-11-24 |
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