CN103282664A - Uniaxial eccentric screw pump - Google Patents

Uniaxial eccentric screw pump Download PDF

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Publication number
CN103282664A
CN103282664A CN2011800631499A CN201180063149A CN103282664A CN 103282664 A CN103282664 A CN 103282664A CN 2011800631499 A CN2011800631499 A CN 2011800631499A CN 201180063149 A CN201180063149 A CN 201180063149A CN 103282664 A CN103282664 A CN 103282664A
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CN
China
Prior art keywords
lining portion
urceolus
stator
single shaft
rotor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011800631499A
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Chinese (zh)
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CN103282664B (en
Inventor
桥间隆
小川雅树
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Heishin Ltd
Heishin Sobi KK
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Heishin Ltd
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Publication of CN103282664A publication Critical patent/CN103282664A/en
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Publication of CN103282664B publication Critical patent/CN103282664B/en
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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
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • 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
    • F04C2230/00—Manufacture
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The purpose is to provide a uniaxial eccentric screw pump allowing for easy separation of a stator into an outer tube and a lining member, and for easy adjustment of the tightening margin. [Solution] The stator (20) has an outer tube (24) and a tubular liner (22) integrally formed so that the inner circumferential surface thereof has an internal thread. Flanges (26, 26) extending diametrically outward are provided at both ends of the liner (22), and an outer-tube mounting unit (28) is provided between the flanges. The outer tube (24) is mounted in a non-bonded state in the outer-tube mounting unit (28), and both ends thereof abut against the flanges (26, 26). The tightening tolerance can be adjusted by inserting or removing a shim (25) between the liner (22) and the outer tube (24).

Description

The single shaft eccentrie helical totorpump
Technical field
The present invention relates to the single shaft eccentrie helical totorpump, this single shaft eccentrie helical totorpump has the stator that can be divided into urceolus portion and lining portion.
Background technique
Provide under the prior art as the disclosed pump that is called as the single shaft eccentrie helical totorpump in the following patent documentation 1, this pump constitutes: the structure that is inserted with the rotor that forms the external screw thread shape in the inside that inner peripheral surface forms the stator of female thread shape.The stator that adopts in this pump, great majority constitute the structure that is inserted with the sleeve member that is formed by rubber or resin etc. in metal urceolus.In the stator that adopts in the prior art, by utilizing methods such as bonding urceolus and sleeve member are fixed, prevented both position skews or the position skew of sleeve member thus.
[prior art document]
[patent documentation]
Patent documentation 1: TOHKEMY 2005-344587 communique
Summary of the invention
In the single shaft eccentrie helical totorpump of prior art, when between outer surface that the deterioration year in year out owing to stator causes rotor and the inner surface of stator contact pressure and magnitude of interference (outer surface of rotor and inner surface of stator overlapping) thus when reducing to bring into play sufficient performance, can take to carry out corresponding measure or carry out corresponding measure by rotor being replaced by the big rotor of diameter by changing stator.In order to adjust magnitude of interference etc. and take rotor is replaced by under the situation of big this countermeasure of rotor of diameter, must carry out the apportioned effort of single shaft eccentrie helical totorpump, thereby exist operating efficiency correspondingly to reduce this problem.
In addition, therefore the stator under the prior art, undertaken not only needing to change the sleeve member of wearing and tearing under the corresponding situation by changing stator, and urceolus also needs to change for by boning urceolus and the integrated structure of sleeve member.Therefore, when when considering viewpoints such as environmental problem, operating cost, wish to be following structure: namely, can easily urceolus and the sleeve member that constitutes stator be reclaimed respectively, and the sleeve member by changing wearing and tearing etc. can make the structure that pressure and magnitude of interference recover that contacts between rotor and the stator.
Undertaken to carry out apportioned effort, the assembling operation of single shaft eccentrie helical totorpump under the corresponding situation by the replacing operation of carrying out sleeve member etc.In addition, in the single shaft eccentrie helical totorpump under prior art, the central shaft that when carrying out assembling operation, also needs to make sleeve member and stator consistent operation exactly.Therefore, in order further to suppress the replacing frequency of sleeve member and to be accompanied by the operating cost that the replacing of sleeve member etc. produces, wish to be following structure: namely, except the situation of sleeve member extreme wear, also can be easily and make recoveries such as magnitude of interference accurately even do not carry out the replacing of sleeve member, and, when making the operation of recoveries such as magnitude of interference, do not need to make consistent this structure of central shaft of sleeve member and stator.
And then in the single shaft eccentrie helical totorpump, hope can suitably be adjusted magnitude of interference according to the temperature variation of conveying fluid, purposes etc.Particularly, there is following requirement for the single shaft eccentrie helical totorpump: namely, wish by delivering hot water after carrying fluid such as food etc., the requirement that parts such as rotor, stator are washed thus.But, under prior art because if not more exchanging rotor or stator just can't carry out the adjustment of magnitude of interference etc., therefore, the external diameter of rotor and the internal diameter of stator are set to when delivering hot water etc. and can make magnitude of interference become excessive.Therefore, in the single shaft eccentrie helical totorpump under prior art, the magnitude of interference when making the conveying high temperature fluid etc. are very difficult for suitable state.
Therefore, the object of the present invention is to provide a kind of can easily stator be separated into urceolus and sleeve member and can be easily and the outer surface of adjusting rotor accurately and inner surface of stator between the single shaft eccentrie helical totorpump that contacts pressure and magnitude of interference.
The single shaft eccentrie helical totorpump of the present invention that provides in order to solve above-mentioned problem is characterised in that: possess the rotor of external screw thread shape and can insert logical stator for described rotor; Described stator has: lining portion, and it is tubular and the inner peripheral surface with female thread shape; Urceolus portion, it is configured to the periphery of described lining portion surrounded and is installed on described lining portion with unadhered state; Adjustment component, it can make described urceolus portion radial deflection towards described lining portion in being equivalent to the zone of a circumferencial direction part at least.
Forming under the situation of this structure, utilizing the zone suitable with the part of circumferencial direction at least that adjustment component makes urceolus portion towards radial deflection, contacting pressure and magnitude of interference between the outer surface that can adjust rotor thus and the inner surface of stator.By like this, need not replacing of carrying out stator or rotor etc., just can suitably adjust magnitude of interference according to the temperature variation of the wearing and tearing of sleeve member, the fluid of carrying, purposes etc.In addition, by like this, can further suppress replacing frequency and the operating cost of sleeve member.
In addition, the inventor etc. are through clear and definite after the wholwe-hearted research: even under the situation of the zone skew that is equivalent to a circumferencial direction part that only makes urceolus portion as mentioned above like that, between the internal surface of the outer surface of rotor and lining portion contact pressure and magnitude of interference also irrespectively all is approximate equality with each position, thereby uneven wear does not take place in the sleeve member but be roughly wearing and tearing equably.Therefore, in single shaft eccentrie helical totorpump of the present invention, replacing frequency and the operating cost of lining portion can be suppressed in the inferior limit.In addition, in single shaft eccentrie helical totorpump of the present invention, when utilizing adjustment component to contact the adjustment operation of pressure and magnitude of interference, need not the operation that makes sleeve member consistent with the centre of rotor axle, thus can be easily and carry out the adjustment of magnitude of interference etc. accurately.
In single shaft eccentrie helical totorpump of the present invention, by utilizing adjustment component magnitude of interference etc. is adjusted, thereby can be formed suitable working state according to the temperature of conveying fluid, purposes etc.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can prevent breakage and the reduction of too small caused fluid transportation performance because magnitude of interference becomes of the excessive caused stator because magnitude of interference becomes.
The single shaft eccentrie helical totorpump of the present invention that provides based on same opinion is characterised in that: possess the rotor of external screw thread shape and can insert logical stator for described rotor; Described stator has: lining portion, and it is tubular and the inner peripheral surface with female thread shape; Urceolus portion, it forms the lining portion mounting zone that described lining portion is accommodated with unadhered state; Adjustment component, its can make described lining portion mounting zone in the part of the circumferencial direction at least zone of described lining portion towards the radially expansion of described lining portion and/or dwindle.
In single shaft eccentrie helical totorpump of the present invention, the lining portion mounting zone of inboard that utilizes adjustment component to make to be formed at urceolus portion towards radially enlarging and/or dwindling, contacts pressure and magnitude of interference between the outer surface that can adjust rotor thus and the inner surface of stator in the circumferencial direction part zone of lining portion.By like this, replacing that need not to carry out stator or rotor etc. just can suitably be adjusted magnitude of interference.
In addition, in single shaft eccentrie helical totorpump of the present invention, except the over worn situation of sleeve member, do not need to carry out the replacing of sleeve member under other situations, and, even under the situation that has taken place to change in the temperature of conveying fluid, purposes etc., do not need to carry out the replacing of sleeve member and rotor yet.By like this, the replacing frequency of sleeve member can be suppressed in the inferior limit, thereby can will safeguard that required time, operating cost etc. are suppressed in the inferior limit.
In addition, the inventor etc. are clear and definite through wholwe-hearted research back: even only make the zone expansion that is equivalent to a circumferencial direction part on the inner peripheral surface of urceolus portion, under the situation of dwindling, between the internal surface of the outer surface of rotor and lining portion contact pressure and magnitude of interference also irrespectively all is approximate equality with each position.Therefore, in single shaft eccentrie helical totorpump of the present invention, even when carrying out work under the state that utilizes adjustment component to make lining portion mounting zone enlarge, dwindle, the uneven wear of sleeve member can not take place also.Therefore, according to the present invention, replacing frequency and the operating cost of lining portion can be suppressed in the inferior limit.
In addition, because the uneven wear of sleeve member can not take place, therefore, when using adjustment component to contact the adjustment operation of pressure and magnitude of interference, need not the operation that makes sleeve member consistent with the centre of rotor axle.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can extremely easily implement the adjustment operation of magnitude of interference etc.
In single shaft eccentrie helical totorpump of the present invention, utilize adjustment component that magnitude of interference etc. is adjusted, thereby can form suitable working state according to the temperature of conveying fluid, purposes etc.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can prevent breakage and the reduction of too small caused fluid transportation performance because magnitude of interference becomes of the excessive caused stator because magnitude of interference becomes.
The single shaft eccentrie helical totorpump of the present invention that provides based on same opinion is characterised in that: possess the rotor of external screw thread shape and can insert logical stator for described rotor; Described stator has: lining portion, and it is tubular and the inner peripheral surface with female thread shape; Urceolus portion, it forms the lining portion mounting zone that described lining portion is accommodated with unadhered state; Adjustment component, it is by adjusting from the pressing force of described urceolus portion side towards the part of the circumferencial direction at least zone that acts radially on described lining portion, thus can make described lining portion mounting zone in the part of the circumferencial direction at least zone of described lining portion towards the radially expansion of described lining portion and/or dwindle.
In single shaft eccentrie helical totorpump of the present invention, utilize adjustment component that the pressing force the part of the circumferencial direction at least zone that acts on lining portion from urceolus portion side is adjusted, make lining portion mounting zone towards radially enlarging and/or dwindle thus, thereby contact pressure and magnitude of interference between the outer surface that can adjust rotor and the inner surface of stator.By like this, replacing that need not to carry out stator or rotor etc. just can suitably be adjusted magnitude of interference.
In single shaft eccentrie helical totorpump of the present invention, except the over worn situation of sleeve member, under the wearing and tearing owing to sleeve member cause situation that magnitude of interference reduces, under the situation that the temperature of conveying fluid has taken place to change, that situation about changing has taken place in purposes is inferior, all can only just make suitableization of magnitude of interference by utilizing adjustment component to adjust.Therefore, according to single shaft eccentrie helical totorpump of the present invention, the replacing frequency of sleeve member can be suppressed in the inferior limit, thereby can will safeguard that required time, operating cost etc. are suppressed in the inferior limit.
In addition, the inventor etc. are clear and definite through wholwe-hearted research back: even utilizing the adjustment component adjustment under the situation of the pressing force of urceolus portion side towards a part of zone of the circumferencial direction that acts radially on lining portion, between the internal surface of the outer surface of rotor and lining portion contact pressure and magnitude of interference also irrespectively all is approximate equality with each position.Therefore, in single shaft eccentrie helical totorpump of the present invention, even under the situation of utilizing adjustment component magnitude of interference etc. to be carried out adjust, the uneven wear of sleeve member can not take place also.Therefore, according to the present invention, replacing frequency and the operating cost of lining portion can be suppressed in the inferior limit.
In addition, because the uneven wear of sleeve member can not take place, therefore, when using adjustment component to contact the adjustment operation of pressure and magnitude of interference, need not the operation that makes sleeve member consistent with the centre of rotor axle.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can extremely easily implement the adjustment operation of magnitude of interference etc.
In single shaft eccentrie helical totorpump of the present invention, by utilizing adjustment component that the pressing force in the circumferencial direction at least part zone that acts on lining portion is adjusted, thereby can easily magnitude of interference etc. be adjusted into suitable state according to the temperature of conveying fluid, purposes etc.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can prevent breakage and the reduction of too small caused fluid transportation performance because magnitude of interference becomes of the excessive caused stator because magnitude of interference becomes.
Preferred in single shaft eccentrie helical totorpump of the present invention: described adjustment component is made of partition, and described partition can insert between described lining portion and the described urceolus portion and/or detach between described lining portion and described urceolus portion.
According to this structure, by insertion or taking-up, the adjustment of partition thickness and the adjustment of partition sheet number etc. of partition, can with between the outer surface of rotor and the inner surface of stator contact pressure and magnitude of interference is adjusted into optimal state.
Preferred in single shaft eccentrie helical totorpump of the present invention: described urceolus portion can along the circumferential direction be divided into a plurality of outside barrel member; Described outer barrel member has the lip part that extends along axial direction at the circumferencial direction two end part; Described adjustment component is made of the union body that the lip part with the described outer barrel member of adjacency on the circumferencial direction connects each other, and described adjustment component can be adjusted described lip part interval each other.
According to this structure, by utilizing adjustment component lip part interval is each other adjusted, can with between the outer surface of rotor and the inner surface of stator contact pressure and magnitude of interference is adjusted into optimal state.
In addition, in single shaft eccentrie helical totorpump of the present invention, described union body also can be made of the holding element of the described lip part of clamping.
According to this structure, by utilizing holding element the chucking power that acts on lip part is adjusted, lip part interval each other can be easily adjusted, thereby magnitude of interference etc. can be adjusted accurately.
The single shaft eccentrie helical totorpump of the present invention that provides based on same opinion is characterised in that: possess the rotor of external screw thread shape and can insert logical stator for described rotor; Described stator has: lining portion, and it is tubular and the inner peripheral surface with female thread shape; Urceolus portion, it is configured to the periphery of described lining portion is surrounded, and is installed on described lining portion with unadhered state; In the part of circumferencial direction at least of described lining portion and be in the zone of extending of the axial direction along described lining portion, partition can be inserted between described lining portion and the described urceolus portion and/or described partition is detached between described lining portion and described urceolus portion.
Forming under the situation of this structure, detach between lining portion and urceolus portion by partition being inserted between lining portion and the urceolus portion and/or with partition, can make the zone that is equivalent to a circumferencial direction part at least in the urceolus portion inner peripheral surface towards the radial deflection of lining portion.In other words, the zone (lining portion mounting zone) that can make the mounting bush portion that is used for that is formed at urceolus portion inboard in the circumferencial direction part zone of lining portion towards the radially expansion of lining portion and/or dwindle.
Therefore, in single shaft eccentrie helical totorpump of the present invention, detach between lining portion and urceolus portion by partition being inserted between lining portion and the urceolus portion and/or with partition, contact pressure and magnitude of interference between the outer surface that can adjust rotor and the inner surface of stator.Therefore, according to single shaft eccentrie helical totorpump of the present invention, need not replacing of carrying out stator or rotor etc., just can suitably adjust magnitude of interference according to the temperature variation of the wearing and tearing of sleeve member, the fluid of carrying, purposes etc.Replacing frequency and the operating cost that can further suppress in addition, sleeve member thus.
In addition, as mentioned above, the inventor etc. are through clear and definite after the wholwe-hearted research: even only make under the situation of the zone skew that is equivalent to a circumferencial direction part in the urceolus portion inner peripheral surface, perhaps, make lining portion mounting zone in the circumferencial direction of lining portion part zone under the situation that radially enlarges and/or dwindle of lining portion, between the internal surface of the outer surface of rotor and lining portion contact pressure and magnitude of interference also irrespectively all is approximate equality with each position.
Therefore, in single shaft eccentrie helical totorpump of the present invention, even partition is being inserted between urceolus and the sleeve member and/or partition is carried out the conveying of fluid under the state that detaches between urceolus and the sleeve member, uneven wear also can not take place but be roughly wearing and tearing equably in sleeve member.Therefore, in single shaft eccentrie helical totorpump of the present invention, replacing frequency and the operating cost of the lining portion that causes owing to uneven wear can be suppressed in the inferior limit.In addition because the uneven wear of lining portion can not take place, therefore, partition is inserted between lining portion and the urceolus portion and/or with partition when detaching between lining portion and the urceolus portion, also need not the operation that makes sleeve member consistent with the centre of rotor axle.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can implement the adjustment operation of magnitude of interference etc. extremely easily.
In single shaft eccentrie helical totorpump of the present invention, by utilizing partition magnitude of interference etc. is adjusted, thereby can be formed suitable working state according to the temperature of conveying fluid, purposes etc.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can prevent breakage and the reduction of too small caused fluid transportation performance because magnitude of interference becomes of the excessive caused stator because magnitude of interference becomes.
The single shaft eccentrie helical totorpump of the present invention that provides based on same opinion is characterised in that: possess the rotor of external screw thread shape and can insert logical stator for described rotor; Described stator has: lining portion, and it is tubular and the inner peripheral surface with female thread shape; Urceolus portion, it is configured to the periphery of described lining portion surrounded and is installed on described lining portion with unadhered state; Described urceolus portion can along the circumferential direction be divided into a plurality of outer barrel members; Described outer barrel member has the lip part that extends along axial direction at the circumferencial direction two end part, and, utilize union body that the lip part of the described outer barrel member of adjacency on the circumferencial direction is connected each other, can form described urceolus portion thus; Described union body can be adjusted described lip part interval each other.
Forming under the situation of this structure, utilize union body that the lip part interval each other of the outer barrel member that constitutes urceolus portion is adjusted, can make the zone that is equivalent to a circumferencial direction part at least in the urceolus portion inner peripheral surface towards the radial deflection of lining portion thus.In other words, the zone (lining portion mounting zone) that can make the mounting bush portion that is used for that is formed at urceolus portion inboard in the circumferencial direction part zone of lining portion towards the radially expansion of lining portion and/or dwindle.In addition, the pressing force that acts on lining portion is changed in the part of the circumferencial direction at least zone of lining portion.
Therefore, in single shaft eccentrie helical totorpump of the present invention, adjust by the lip part interval each other that utilizes the external barrel member of union body, contact pressure and magnitude of interference between the outer surface that can adjust rotor and the inner surface of stator, thereby need not replacing of carrying out stator or rotor etc.Replacing frequency and the operating cost that can further suppress in addition, sleeve member thus.
As mentioned above, according to wholwe-hearted results who studies such as the inventor as can be known: even under the situation of the zone skew that is equivalent to a circumferencial direction part in only making urceolus portion inner peripheral surface, make lining portion mounting zone in the circumferencial direction of lining portion part zone under the situation that radially enlarges and/or dwindle of lining portion, and make under any one situation in the situation that the pressing force that acts on lining portion changes in the part of the circumferencial direction at least zone of lining portion, between the internal surface of the outer surface of rotor and lining portion contact pressure and magnitude of interference also irrespectively all is approximate equality with each position.
Therefore, in single shaft eccentrie helical totorpump of the present invention, even carry out the conveying of fluid under the state that has carried out adjusting at the lip part that utilizes the external barrel member of union body interval each other, also uneven wear can not take place in the sleeve member but be roughly to wear and tear equably.Therefore, in single shaft eccentrie helical totorpump of the present invention, replacing frequency and the operating cost of the lining portion that causes owing to uneven wear can be suppressed in the inferior limit.In addition because the uneven wear of lining portion can not take place, therefore, partition is inserted between lining portion and the urceolus portion and/or with partition when detaching between lining portion and the urceolus portion, also need not the operation that makes sleeve member consistent with the centre of rotor axle.Therefore, according to single shaft eccentrie helical totorpump of the present invention, can extremely easily implement the adjustment operation of magnitude of interference etc.
Preferred in single shaft eccentrie helical totorpump of the present invention: union body is made of the holding element of clamped flanges portion.
According to this structure, utilize holding element easily to adjust the binding strength that acts on lip part.Thus, can adjust magnitude of interference etc. accurately.
Preferred in the single shaft eccentrie helical totorpump of the present invention: the two end part of described lining portion are provided with towards the outstanding flange shape portion of radial outside; Described urceolus portion is configured between the described flange shape portion, and, end and described flange shape the butt of described urceolus portion.
Form in single shaft eccentrie helical totorpump of the present invention: the flange shape portion that is being arranged on the two end part of lining portion disposes urceolus portion each other, and then makes the end of urceolus portion and the structure of flange shape butt.Therefore, the performance of urceolus portion is used for preventing lining portion to the pillar effect of axial shrinkage, thereby the internal diameter of lining portion can be maintained approximate equality.Thus, can avoid the uneven wear of lining portion, thereby make the discharge-amount stabilization.
Preferred in single shaft eccentrie helical totorpump of the present invention: possess with a distolateral stud bolt that is connected of described stator, with another distolateral pump case that is connected of described stator and the crab-bolt that described stud bolt is connected with described pump case; On described stud bolt and/or pump case, be provided with the nut portions that can screw togather with described crab-bolt; By described crab-bolt and described nut portions are relatively rotated, can change the interval between described stud bolt and the described pump case.
In single shaft eccentrie helical totorpump of the present invention, relatively rotate by making crab-bolt and nut portions, can change the interval between stud bolt and the pump case, therefore can easily utilize enforcement magnitude of interference adjustment such as above-mentioned adjustment component.
In single shaft eccentrie helical totorpump of the present invention, also the face shaping of described lining portion can be formed polygon.
By forming this structure, can prevent the occurrence positions skew along the circumferential direction of lining portion, thus the working state that can make single shaft eccentrie helical totorpump stabilization more.
In addition, preferred in single shaft eccentrie helical totorpump of the present invention: described urceolus portion bends to the shape similar with the profile of described lining portion.
By forming this structure, can prevent the occurrence positions skew along the circumferential direction of lining portion more reliably, thereby can make the further stabilization of working state of single shaft eccentrie helical totorpump.
(invention effect)
According to the present invention, can provide a kind of can easily stator be separated into urceolus and sleeve member and can be easily and the outer surface of adjusting rotor accurately and inner surface of stator between the single shaft eccentrie helical totorpump that contacts pressure and magnitude of interference.
Description of drawings
Fig. 1 is the sectional view of the single shaft eccentrie helical totorpump that relates to of expression an embodiment of the present invention.
(a) is the α portion enlarged view of Fig. 1 among Fig. 2, (b) is the β portion enlarged view of Fig. 1.
Fig. 3 is the exploded perspective view of stator.
Fig. 4 is the figure of the stator that adopts in the single shaft eccentrie helical totorpump of presentation graphs 1, wherein, (a) is plan view, (b) is side view, (c) is the B-B sectional view of (d), (d) is the A-A sectional view of (a).
Fig. 5 is the figure of the lining portion that adopts in the stator of presentation graphs 3, wherein, (a) is plan view, (b) is side view, (c) is the D-D sectional view of (b), (d) is the C-C sectional view of (a).
Fig. 6 be explanation outer barrel member is carried out buckle in conjunction with the time handle installed the explanatory drawing of the installation method of holding sheet.
(a) is the sectional view that the stator under the partition state is installed among Fig. 7, (b) is the sectional view that partition is detached the stator under the state of back.
(a) and (b) are side views of holding sheet among Fig. 8, (c) are the sectional views that the stator under the state of the holding sheet shown in (a) is installed.
(symbol description)
10 ... single shaft eccentrie helical totorpump 12 ... pump case
12b ... end 12c ... Embedded Division
13 ... stud bolt 13b ... Embedded Division
15 ... stator assembly department 20 ... stator
22 ... lining portion 24 ... urceolus portion
25 ... partition (adjustment component) 26 ... lip part (flange shape portion)
27 ... lining portion mounting zone 28 ... the urceolus assembly department
36 ... outer barrel member 46 ... holding sheet
50 ... rotor
Embodiment
Next, with reference to accompanying drawing the single shaft eccentrie helical totorpump 10 that an embodiment of the present invention relates to is at length described.
Single shaft eccentrie helical totorpump 10 is so-called rotary displacement type pumps, and as shown in Figure 1, its structure comprises stator 20, rotor 50, power transmission mechanism 70 etc.In addition, single shaft eccentrie helical totorpump 10 possesses metal tubular pump case 12 and stud bolt (end stud) 13, and forms and pump case 12 is connected with stud bolt 13 and is integrated structure.
Particularly, in single shaft eccentrie helical totorpump 10, be respectively equipped with rotation nut (swivel nut) 12x, 13x at pump case 12 and stud bolt 13.Pump case 12 and stud bolt 13 via crab-bolt (stay bolt) thus 18 be connected by integrated, wherein, crab-bolt 18 is connected with rotation nut 12x, 13x respectively.Therefore, in single shaft eccentrie helical totorpump 10, rotate by making rotation nut 12x, 13x, interval between pump case 12 and the stud bolt 13 is enlarged and dwindle.
In single shaft eccentrie helical totorpump 10, have first opening at stud bolt 13, have second opening at the outer peripheral portion of pump case 12.First opening is the through hole along the axial perforation of single shaft eccentrie helical totorpump 10.Second opening is communicated with the inner space of pump case 12 on the intermediate portion 12a of the length direction intermediate portion that is positioned at pump case 12.
First, second opening is respectively the part that plays a role as the suction port of single shaft eccentrie helical totorpump 10 and discharge opening.Further describe as follows: namely, in the single shaft eccentrie helical totorpump 10 of present embodiment, by making rotor 50 to being rotated in the forward, can so that first opening as discharge opening plays a role, second opening plays a role as suction port mode pressurized delivered fluid.In addition, in contrast, in single shaft eccentrie helical totorpump 10, by making rotor 50 to counter-rotating, can so that first opening as suction port plays a role, second opening plays a role as discharge opening mode pressurized delivered fluid.
As depicted in figs. 1 and 2, on the part towards stud bolt 13 sides (end 12b) of pump case 12 under the assembled state of single shaft eccentrie helical totorpump 10, have and be formed the stepped Embedded Division 12c of section shape.In addition, for stud bolt 13, also under the assembled state of single shaft eccentrie helical totorpump 10 on the part (end 13a) of pump case 12 sides, have and be formed the stepped Embedded Division 13b of section shape.Embedded Division 12c, 13b are respectively the parts that arranges for lip part 26 embeddings of the stator 20 that will be described in detail afterwards.The width h1 of Embedded Division 12c, 13b (axially on length) is roughly the same with the thickness (length axially) of lip part 26, and it is roughly the same to be provided with the external diameter of opening footpath h2 on the part of Embedded Division 12c, 13b and lip part 26.
Single shaft eccentrie helical totorpump 10 has between pump case 12 and stud bolt 13 for the stator assembly department 15 that stator 20 is installed.
In single shaft eccentrie helical totorpump 10, by crab-bolt 18 is installed under the state that disposes stator 20 at stator assembly department 15, via stator 20 pump case 12 is connected with stud bolt 13 thus, thereby becomes the state that is formed with the continuous runner that to connect between above-mentioned first, second opening.
Stator 20 is distinctive parts of tool in the single shaft eccentrie helical totorpump 10, and as Fig. 1, Fig. 3 and lining portion 22, urceolus portion 24 and the partition (shim) 25 of roughly being divided into shown in Figure 4.Lining portion 22 is by being that the elastomer of representative or resin etc. are and form with rubber.About the material of lining portion 22, can suitably use fluorine rubber, fluorosioloxane rubber or silicone rubber according to suitably selecting as the kind of the fluid of transported material or characteristic etc. of utilizing that single shaft eccentrie helical totorpump 10 carries.
In addition, material as lining portion 22, preferably formed by following rubber raw materials: namely, adopt the method for measurement of putting down in writing among the JIS K6262 reduced specimen to be classified as at compression ratio under 25% the condition and compress, and the compression set after tanning by the sun through 72 hours under 100 ℃ the temperature environment is the rubber raw materials formation 20% below.
In addition, the hardness that the hardness of lining portion 22 is preferably as follows: namely, be in 60～80 the scope when utilizing the A type duroscope of putting down in writing among the JIS K6253 (Type A Durometer) under 23 ℃ ± 1 ℃ temperature environment, to measure.
Lining portion 22 has towards the outstanding lip part 26,26 (flange shape portion) of radial outside and possess cylindrical shell for the urceolus assembly department 28 that urceolus portion 24 is installed between lip part 26,26 at its axial two end part.Lining portion 22 be with lip part 26,26 and urceolus assembly department 28 be the parts that form, and, lip part 26,26 and the boundary portion office of urceolus assembly department 28 be provided with ladder 30. Lip part 26,26 face shaping (section shape) form circular, and the face shaping of urceolus assembly department 28 (section shape) forms polygon (in the present embodiment for roughly positive decagon).
In addition, as mentioned above, lip part 26,26 thickness form identical with the width h1 of Embedded Division 12c, 13b on the end 12b, the 13a that are arranged on pump case 12 and stud bolt 13 or for more than the width h1.Lip part 26,26 thickness are preferably formed to respect to width h1 thick 5%～15%.By like this, lip part 26,26 is fixed by crimping securely between pump case 12 and stud bolt 13, thereby becomes sealing state.In addition, lip part 26,26 external diameter form respectively with the end 12b, the 13a that are arranged on pump case 12 and stud bolt 13 on the opening footpath h2 of Embedded Division 12c, 13b roughly the same.
The inner peripheral surface 32 of lining portion 22 forms n bar single-stage or multistage female thread shape.In the present embodiment, the inner peripheral surface 32 of lining portion 22 forms multistage female thread shape.More specifically, be provided with in the inside of lining portion 22 along the length direction extension of lining portion 22 and the female thread shape through hole 34 that twists with the pitch of regulation.Through hole 34 forms that its section shape (opening shape) is roughly long-round-shape when analysing and observe from the length direction any position of lining portion 22.
As shown in Figure 3 and Figure 4, thus urceolus portion 24 is installed in the parts that cover the periphery of lining portion 22 on the urceolus assembly department 28 of above-mentioned lining portion 22 with unadhered state.Particularly, urceolus portion 24 is installed on the parts on the periphery of lining portion 22 with pressed state, even do not use Bond also to be integrated with lining portion 22, and forms at circumferencial direction and the axial state that is positioned of both direction.
As shown in Figure 3, urceolus portion 24 by a plurality of (in the present embodiment being two) outer barrel member 36,36 and cramp (gramp) 38,38 constitute, and can form lining portion mounting zone 27 in the inboard. Outer barrel member 36,36 is respectively with the circumferencial direction of the urceolus assembly department 28 of lining portion 22 metal member made of covering of half zone roughly, and crooked (flexing) becomes the shape similar with the shape of urceolus assembly department 28.Therefore, by with respect to lining portion 22 outer barrel member 36 being installed in the mode that urceolus assembly department 28 is contained in the lining portion mounting zone 27, form the state that the rotation along the circumferential direction of outer barrel member 36 is prevented from thus.
In addition, shown in Fig. 4 (d), the thickness of outer barrel member 36 is greater than the height that is formed at the ladder 30 between lip part 26 and the urceolus assembly department 28 in the lining portion 22.Therefore, when being installed on outer barrel member 36 on the urceolus assembly department 28, as shown in Figure 1 and Figure 4, becoming outer barrel member 36 and compare lip part 26 more towards the outstanding state of the radial outside of lining portion 22.
In addition, the same length of the length of outer barrel member 36 and urceolus assembly department 28.Therefore, when being installed on outer barrel member 36 on the urceolus assembly department 28, as Fig. 1, Fig. 2 and shown in Figure 4, become the state of the two end part of barrel member 36 outside the part place that in lining portion 22, is formed with ladder 30 and lip part 26,26 butts.Therefore, outside lining portion 22 is equipped with under the state of barrel member 36 pressure stress under the situation of axially (length direction) effect, urceolus portion 24 utilizes outer barrel member 36 that this stress is stopped, thereby can prevent the compressive strain of lining portion 22 or be formed at the distortion of the interior through hole 34 of lining portion 22.
Be formed with the handle 40,40 (lip part) that extends towards length direction on barrel member 36,36 the circumferencial direction two end part outside.Handle 40, a distolateral pin inserting hole 42,42 that is provided with of 40 are at another distolateral engagement groove 44,44 that is formed with. Pin inserting hole 42,42 and engagement groove 44,44 be respectively for the cramp 38 that is described in detail after installing, 38 and the parts that use.Engagement groove 44 form edge from handle 40 towards oblique rear (above-mentioned another distolateral) extend.
Cramp 38 possesses section shape and is roughly the holding sheet 46 of " コ " font and sells 48.Holding sheet 46 is that the handle 40, the mode of 40 clampings of state carry out mounted component in an overlapping with the general when urceolus assembly department 28 is installed outer barrel member 36.Holding sheet 46 has the length roughly the same with handle 40, and, at the length direction one distolateral pin inserting hole 46a that is provided with, distolaterally be provided with protruding 46b at another.Holding sheet 46 by as among Fig. 6 to make protruding 46b slide and run at protruding 46b under the state of end of engagement groove 44 along engagement groove 44 shown in the arrow X, as centered by protruding 46b, to rotate shown in the arrow Y, thus, can form and to sell the state that inserting hole 46a is communicated with the pin inserting hole 42,42 of handle 40,40 sides, wherein, engagement groove 44 forms in handle 40 and extends towards true dip direction.Under this state, make pin 48 insert logical pin inserting hole 46a, 42,42, thus, can form and utilize cramp 38 with handle 40,40 clampings and fixing state (state of buckle combination).
As shown in Figure 3, partition 25 (adjustment component, pressing force adjustment component) is made of metal system or resinous thin plate, and is to be inserted into above-mentioned lining portion 22 and the parts between the urceolus portion 24.The thickness of partition 25 is preferably formed and is about 1/30～1/100 of the diameter of rotor 50.In the present embodiment, the thickness of partition 25 forms about 0.1mm～0.4mm.In addition, the width of partition 25 form with above-mentioned lining portion 22 in the axial direction of urceolus assembly department 28 on length, in other words be the identical length of the length of the lining portion mounting zone 27 of urceolus portion 24.In addition, the length of partition 25 form with lining portion 22 in the suitable length of the part of periphery length of urceolus assembly department 28.Particularly, the length of partition 25 forms about 1/12～1/8 length of the periphery length of urceolus assembly department 28.In other words, the length of partition 25 form with urceolus assembly department 28 circumferencial directions on 30 degree to the suitable length of the length of 45 degree parts.
As shown in Figure 3, partition 25 is installed in the roughly whole width range of the urceolus assembly department 28 in the lining portion 22.In addition, shown in Fig. 3, Fig. 4 and Fig. 7 (a), partition 25 is installed in the regional area scope on the circumferencial direction of urceolus assembly department 28 about 1/12～1/8 zone of periphery (in the present embodiment for).In addition, about partition 25, except only installing a slice, can also install with the overlapping state of multi-disc as required.And then, under the situation that partition 25 has been installed with overlapping state, also can be as required wherein a part of partition be detached.Partition 25 also can directly be configured on the urceolus assembly department 28, but, consider to prevent that partition 25 from coming off and the influence caused position skews such as vibration that prevent from being produced by the work that is accompanied by single shaft eccentrie helical totorpump 10 etc. from urceolus assembly department 28, also can use Bond etc. that partition 25 is installed on the urceolus assembly department 28.
Stator 20 detaches between lining portion 22 and urceolus portion 24 by partition 25 is inserted between lining portions 22 and the urceolus portion 24 or with partition 25, can make the part that is equivalent to urceolus portion 24 circumferencial direction parts, namely outer barrel member 36 is towards the radial deflection (offset) of lining portion 22.
Particularly, under the situation that is not inserted with partition 25, be depicted as roughly tight state of contact of the whole urceolus assembly department 28 with lining portion 22 of the inner peripheral surface of urceolus portion 24 as Fig. 7 (b).In this case, when partition 25 being inserted between lining portions 22 and the urceolus portion 24, become the state that the outer barrel member 36 that is inserted with partition 25 sides shown in Fig. 7 (a) is offset by the radial outside towards lining portion 22.In addition, when with partition 25 when detaching between lining portion 22 and the urceolus portion 24, become the whole urceolus assembly department 28 tight state of contact with lining portion 22 of the inner peripheral surface of urceolus portion 24.Thus, become outer barrel member 36 and be offset the part suitable with the thickness part of the partition 25 that detaches by the radially inner side towards lining portion 22.Like this, detach between lining portion 22 and urceolus portion 24 by partition 25 is inserted between lining portion 22 and the urceolus portion 24 or with partition 25, can make the part of urceolus portion 24 towards the radial deflection of lining portion 22.
In addition, stator 20 is by will partition 25 inserting between lining portions 22 and the urceolus portion 24 or with partition 25 and detach between lining portion 22 and urceolus portion 24, can make lining portion mounting zone 27 in a part of zone of the circumferencial direction at least of lining portion 22 towards the radially amplification of lining portion 22 and/or dwindle.And then, by partition 25 is inserted or detaches, can adjust from urceolus portion 24 sides and radially act on pressing force the circumferencial direction part zone of lining portion 22.
Particularly, when partition 25 is inserted between lining portions 22 and the urceolus portion 24 or with partition 25 when detaching between lining portion 22 and the urceolus portion 24, be inserted at partition 25, by in the zone that detaches, lining portion mounting zone 27 is by towards radially enlarging or dwindling the part suitable with the thickness of partition 25.In addition, because urceolus portion 24 is installed on lining portion 22 in the mode that is pressed state, therefore, when inserting partition 25 between lining portion 22 and the urceolus portion 24, in the zone that partition 25 is inserted into, act on local rising of pressing force of lining portion 22.In contrast, when partition 25 is detached, act on the correspondingly local reduction of pressing force of lining portion.
In addition, the sheet number that inserts the partition 25 between lining portion 22 and the urceolus portion 24 might not be a slice, also can insert between lining portion 22 and the urceolus portion 24 with the overlapping state of multi-disc.Under the state insertion lining portion 22 and the situation between the urceolus portion 24 that partition 25 is overlapping with multi-disc, by adjusting the sheet number of overlapping partition 25, can adjust the side-play amount of outer barrel member 36, expansion and the degree of dwindling of lining portion mounting zone 27 and the equilibrium of forces of pressing that acts on lining portion 22 more subtly.
Stator 20 is that barrel member 36,36 covers lining portion 22 and utilizes under the state of cramp 38,38 with handle 40,40 combinations and use outside making.Stator 20 is inserted in the stator assembly department, this stator assembly department in pump case 12, be positioned at the first opening adjoining position on.Particularly, stator 20 is to be fixed by following manner: namely, the lip part 26,26 that is arranged on lining portion 22 two ends is inserted among Embedded Division 12c, the 13b that is arranged on pump case 12 and the stud bolt 13, and be held on (stator assembly department) between stud bolt 13 and the intermediate portion 12a, and, crab-bolt 18 is installed and is fastened between the main body of stud bolt 13 and pump case 12.
When in the above described manner stator 20 being installed, shown in Fig. 2 (a), become lining portion 22 one distolateral on lip part 26 be held in state between stud bolt 13 and the urceolus portion 24.In addition, shown in Fig. 2 (b), become on another of lining portion 22 is distolateral another lip part 26 and be held in state between intermediate portion 12a and the urceolus portion 24.And then for urceolus portion 24, the end butt of and lip part 26 and stud bolt 13 distolateral for one, another is distolateral and the state of the end butt of lip part 26 and pump case 12.Therefore, the lining portion 22 of stator 20 and 24 both sides of urceolus portion all can be in the stator assembly department 15 of pump case 12 situation such as occurrence positions skew.
As shown in Figure 1, rotor 50 is metal axis bodies, and forms single-stage or the multistage external screw thread shape of n-1 bar.In the present embodiment, rotor 50 forms 1 multistage eccentric external screw thread shape.Its section shape was roughly positive circular when rotor 50 formed and analyses and observe in the length direction any position.Rotor 50 is inserted to be led in the above-mentioned through hole 34 that is formed in the stator 20, and forms in the eccentric rotation freely of the inside of through hole 34.
When rotor 50 being inserted in the through holes 34 that lead in the lining portion 22 that is formed on stator 20, become the inner peripheral surface 32 of the outer circumferential face 52 of rotor 50 and stator 20 with the state of both tangent line butts.In addition, under this state, between the outer circumferential face of the inner peripheral surface 32 of stator 20 and rotor 50, form fluid and carry road 60.
Fluid carries road 60 along the length direction shape ground extension in the shape of a spiral of stator 20 or rotor 50.In addition, when rotating in the through hole 34 that makes rotor 50 at stator 20, the length direction along stator 20 when fluid carries road 60 to rotate in stator 20 advances.Therefore, when making rotor 50 rotations, can suck fluids in the tunnel 60 from distolateral a conveying to fluid of stator 20, and, can carry state in the road 60 to another distolateral conveying of stator 20 and another distolateral spuing of stator 20 to be closed in fluid this fluid.That is, when making rotor 50 when being rotated in the forward, the fluid that sucks from second opening can be carried out pressurized delivered, and spue from first opening.In addition, when making rotor 50 to counter-rotating, the fluid that sucks from first opening can be spued from second opening.
Power transmission mechanism 70 is in order from the power sources such as motor (not shown) that are arranged on pump case 12 outsides above-mentioned rotor 50 transferring power to be arranged.Power transmission mechanism 70 has power joint 72 and eccentric rotary part 74.Power joint 72 is arranged in the accommodation section, wherein, the axle accommodation section be arranged on pump case 12 distolaterally the going up of length direction, more specifically be (following also abbreviate as " terminal side ") on the side opposite with being provided with above-mentioned stud bolt 13 or stator assembly department 15 sides.In addition, eccentric rotary part 74 is arranged on the intermediate portion 12a that is formed between an accommodation section and the stator assembly department 15.
Power joint 72 has live axle 76, and this live axle 76 is supported for and can rotates freely by two bearing 78a, 78b.Live axle 76 from the inaccessible part of pump case 12 terminal sides outward portion stretch out, and be connected with power source.Therefore, by making power source work, can make live axle 76 rotations.Between the axle accommodation section that is provided with power joint 72 and intermediate portion 12a, be provided with the gland seal device 80 that is constituted by for example mechanical sealing element or gland packing etc., form thus can be from intermediate portion 12a side leakage to axle accommodation section side as the fluid of transported material structure.
Eccentric rotary part 74 is parts that above-mentioned live axle 76 and rotor 50 are connected in the mode that can carry out transmission of power.Eccentric rotary part 74 has connection shaft 82 and two union bodies 84,86.Connection shaft 82 is made of existing known connecting rod or screw rod etc.Union body 84 is connected connection shaft 82 with rotor 50, union body 86 is connected connection shaft 82 with live axle 76. Union body 84,86 can be delivered to rotor 50 with transmitting the rotating power that comes via live axle 76, thereby make rotor 50 carry out the off-centre rotation by existing known formations such as universal joint.
In single shaft eccentrie helical totorpump 10, by in stator 20, will between lining portion 22 and urceolus portion 24, detaching between partition 25 insertion lining portions 22 and the urceolus portion 24 or with partition 25, to expansion or the degree of dwindling of the side-play amount of urceolus portion 24 (outer barrel member 36), lining portion mounting zone 27 and act on lining portion 22 press equilibrium of forces adjustment, contact pressure and magnitude of interference between the outer circumferential face 52 that can adjust rotor 50 thus and the inner peripheral surface 32 of lining portion 22.
Particularly, since between the inner peripheral surface 32 of the outer circumferential face 52 that the wearing and tearing of lining portion 22 etc. need to increase rotor 50 and lining portion 22 contact pressure and magnitude of interference the time, pull down part or all the outer barrel member 36 that constitutes urceolus portion 24 from lining portion 22, and at the outer circumferential face configuration partition 25 of lining portion 22.Under the situation that disposes partition 25, further overlapping configuration partition 25.Partition 25 becomes regional area at urceolus assembly department 28 circumferencial directions of lining portion 22 and is installed in state in whole width (axial direction integral body) scope.By the outer barrel member 36 that is removed, the state that barrel member 36 is offset towards radial outside outside becoming in the zone that partition 25 is installed are installed under this state.In addition, in the zone that partition 25 is installed, lining portion mounting zone 27 is towards radially dwindling, and the pressing force of lining portion 22 is local to become big thereby act on.By like this, between the outer circumferential face 52 of rotor 50 and the inner peripheral surface 32 of lining portion 22 contact pressure and the interference quantitative change is big.
On the other hand, since the temperature height of fluid etc. are former thus the inner peripheral surface 32 of the outer circumferential face 52 that need reduce rotor 50 and lining portion 22 between contact pressure and magnitude of interference the time, pull down part or all the outer barrel member 36 that constitutes urceolus portion 24 from lining portion 22, and the partition 25 that will be configured on the outer circumferential face of lining portion 22 is removed.Have in the state configuration overlapping with multi-disc under the situation of partition 25, except all partitions 25 can being removed, also can be with wherein partition 25 dismountings of a part.After having removed partition 25 in the above described manner, outer barrel member 36 is installed, is become outer barrel member 36 by the state towards the radially inner side skew part suitable with the part of removing partition 25.In addition, in the zone after removing partition 25, lining portion mounting zone 27 is towards radially expansion, thereby the pressing force that acts on lining portion 22 diminishes.By like this, between the outer circumferential face 52 of rotor 50 and the inner peripheral surface 32 of lining portion 22 contact pressure and magnitude of interference diminishes.
As mentioned above, in the single shaft eccentrie helical totorpump 10 of present embodiment, by carrying out the loading and unloading of partition 25, contact pressure and magnitude of interference between the outer circumferential face 52 that can adjust rotor 50 and the inner peripheral surface 32 of lining portion 22.In addition, constitute part or all outer barrel member 36 of urceolus portion 24 by loading and unloading, can carry out the loading and unloading of partition 25, thereby do not need stator 20 and rotor 50 complete removals and decompose.And then, in single shaft eccentrie helical totorpump 10, rotate by making rotation nut 12x, 13x, can be with the interval between pump case 12 and the stud bolt 13, be that stator assembly department 15 enlarges and dwindles, spend the time thereby do not need the loading and unloading of barrel member 36 outside to use.Therefore, according to single shaft eccentrie helical totorpump 10, can utilize partition 25 easily to implement the adjustment of magnitude of interference etc., thus outstanding aspect maintainability.
In single shaft eccentrie helical totorpump 10, when working under the arbitrary state in the state of partition 25 being installed as mentioned above and partition 25 being detached, between rotor 50 and the lining portion 22 contact pressure and magnitude of interference also irrespectively all is approximate equality with each position.Therefore, in single shaft eccentrie helical totorpump 10, uneven wear can not take place in lining portion 22, but is roughly wearing and tearing equably.In addition, even partition 25 is inserted between lining portion 22 and the urceolus portion 24, also need not the operation that makes lining portion 22 consistent with the central shaft of rotor 50.Therefore, according to single shaft eccentrie helical totorpump 10, can and safeguard that required operation is suppressed in the inferior limit with the replacing frequency of lining portion 22.
In single shaft eccentrie helical totorpump 10, install or detach partition 25 according to operating conditions such as the temperature of conveying fluid, purposes, can make magnitude of interference etc. for to be suitable for the state of operating conditions and to carry out work thus.Therefore, according to single shaft eccentrie helical totorpump 10, can prevent breakage and the reduction of too small caused fluid transportation performance because magnitude of interference becomes of the excessive caused stator 20 because magnitude of interference becomes.
The thickness of above-mentioned partition 25, length, width all are not limited to above-mentioned situation, but can suitably adjust.In addition, at the width that makes partition 25 than the length on the axial direction of urceolus assembly department 28 in short-term, by taking the methods such as axial direction alignment arrangements of multi-disc partition 25 along urceolus assembly department 28, formation is installed in partition 25 state in the roughly entire scope on the axial direction of urceolus assembly department 28, identical action effect in the time of can obtaining the partition 25 with above-mentioned use present embodiment thus.
In the present embodiment, example illustrates the example of partition 25 as adjustment component, wherein, thereby this adjustment component be for by partition 25 is inserted between lining portions 22 and the urceolus portion 24 or from detach between lining portion 22 and the urceolus portion 24 partition 25 to expansion or the degree of dwindling of the side-play amount of urceolus portion 24 (outer barrel member 36), lining portion mounting zone 27 and act on lining portion 22 press equilibrium of forces adjustment, but the present invention is not limited thereto.
Particularly, also can constitute can be with for the handle 40 of controlling the circumferencial direction two end part that are arranged on outer barrel member 36,40 and structure that the cramp 38 that arranges utilizes as above-mentioned adjustment component.Particularly, shown in Fig. 8 (a) and (b), also can prepare opposed two faces, be interval between clamp face 46p, the 46q different control sheet 46x, 46y, and use respectively according to magnitude of interference etc. and to control sheet 46x, 46y.
Particularly, use shown in Fig. 8 (a) be spaced apart d1 control sheet 46x with outer barrel member 36,36 situations about connecting under, lining portion mounting zone 27 enlarges shown in Fig. 8 (c), thus act on that pressing force in the lining portion 22 slows down and.In addition, the part of the urceolus portion 24 that lining portion 22 is surrounded, namely outer barrel member 36 becomes the state that is offset by the radial outside towards lining portion 22.By like this, between the outer circumferential face 52 of rotor 50 and the inner peripheral surface 32 of lining portion 22 contact pressure and magnitude of interference diminishes.
On the contrary, use shown in Fig. 8 (b) be spaced apart the d2 littler than d1 control sheet 46y with outer barrel member 36,36 situations about connecting under, shown in Fig. 7 (b), be roughly tight state of contact of the whole periphery assembly department 28 with lining portion 22 of the inner peripheral surface of urceolus portion 24.Under this state, to compare when controlling sheet 46x with use, lining portion mounting zone 27 dwindles, thus the pressing force that acts on lining portion 22 becomes big.In addition, the part of the urceolus portion 24 that lining portion 22 is surrounded, namely outer barrel member 36 is and compares the state that is offset by the radially inner side towards lining portion 22 when controlling sheet 46x with use.By like this, between the outer circumferential face 52 of rotor 50 and the inner peripheral surface 32 of lining portion 22 contact pressure and the interference quantitative change is big.
As mentioned above, using under the different at interval situations of controlling sheet 46x, 46y respectively according to magnitude of interference etc., also can use partition 25 simultaneously.Control sheet 46x, 46y and partition 25 by using simultaneously, can adjust the side-play amount as the outer barrel member 36 of urceolus portion 24 parts, expansion or the degree of dwindling of lining portion mounting zone 27 and the equilibrium of forces of pressing that acts on lining portion 22 more subtly.
In addition, single shaft eccentrie helical totorpump 10 also can constitute: replace to use the different cramp 38 in interval between clamp face 46p, the 46q shown in Figure 8, and be to use a plurality of positions on the length direction of the handle 40 of barrel member 36 outside to utilize the anchor clamps that can regulate chucking power of formation such as bolt to fix.Forming under the situation of this structure, utilize the anchor clamps corrective action in the chucking power of handle 40, externally expansion or the degree of dwindling of the side-play amount of barrel member 36, lining portion mounting zone 27 and the pressing force that acts on lining portion 22 are adjusted thus, thereby can seek suitableization of magnitude of interference etc.In addition, under the situation of using anchor clamps, also can use above-mentioned partition 25 simultaneously, thereby can adjust magnitude of interference etc. more subtly.
As mentioned above, in the stator 20 of the single shaft eccentrie helical totorpump 10 of present embodiment, urceolus portion 24 is installed in the lining portion 22 that is integrally formed with unadhered state.Particularly, because externally barrel member 36,36 handle 40,40 are installed the influence of the chucking power that cramps 38 produce, act on urceolus portion 24 towards the pressing force of the radially inner side direction of lining portion 22.Urceolus portion 24 is installed on the periphery of lining portion 22 by the effect of this pressing force with pressed state, and be lining portion 22 axially and the circumferencial direction state of locating.Therefore, according to single shaft eccentrie helical totorpump 10, by pulling down outer barrel member 36,36 and cramp 38,38, can easily be separated into lining portion 22 and urceolus portion 24 and reclaim, thereby can look after environmental problem fully.
In addition, single shaft eccentrie helical totorpump 10 constitutes: the urceolus assembly department 28 that is present between the lip part 26 set on lining portion 22 two end part is covered by urceolus portion 24, and the structure of the end of urceolus portion 24 and lip part 26 butts can prevent that thus lining portion 22 is to axial shrinkage.That is, 24 performances of urceolus portion are used for preventing that lining portion 22 is towards the pillar effect of axial shrinkage.By like this, even owing to spue the influence etc. of pressure towards axial compression force on stator 20, also can irrespectively the internal diameter of lining portion 22 be maintained approximate equality with each position, thus the stabilization that can avoid the uneven wear of lining portion 22 and seek discharge-amount.In addition, in the present embodiment, from preventing that lining portion 22 is towards the viewpoint of axial shrinkage etc., the two ends that example is illustrated in lining portion 22 are provided with the structure of lip part 26, but the present invention is not limited thereto, and also can form any one or two structures that do not arrange of arranging in the lip part 26.
In single shaft eccentrie helical totorpump 10, because urceolus portion 24 can be divided into a plurality of outer barrel members 36 in a circumferential direction, therefore can easily implement urceolus portion 24 with respect to the handling operation of lining portion 22.In addition, above-mentioned urceolus portion 24 utilizes outer barrel member 36 each other cramp 38 in conjunction with (buckle in conjunction with) and forms integrated parts, thereby only by with respect to handle 40,40 loading and unloading holding sheets 46 with sell 48, just can load and unload urceolus portion 24.
In addition, example illustrates the example that is made of urceolus portion 24 two outer barrel members 36 in the present embodiment, but the present invention is not limited thereto, and also can utilize more outer barrel members 36 to constitute urceolus portion 24.In addition, routine two positions that are illustrated in circumferencial direction utilize cramp 38 with the example of outer barrel member 36,36 combinations in the present embodiment, but the present invention is not limited thereto, for example also can be for utilizing hinge etc. with the distolateral connection on outer barrel member 36,36 the circumferencial direction, and utilize cramp 38 or additive method with the structure of another distolateral connection.And then, in the present embodiment example illustrate in conjunction with outer barrel member 36,36 and use by holding sheet 46 with sell the example of 48 cramps that constitute 38, but the present invention is not limited thereto, so long as can with outer barrel member 36,36 with can not occurrence positions the mode of skew fix, also can utilize other arbitrary method with outer barrel member 36,36 combinations.
In the single shaft eccentrie helical totorpump 10 of present embodiment, at a distolateral stud bolt 13 that disposes of stator 20, and the fastening force that stator 20 utilizations are produced by crab-bolt 18 is integratedly with pump case 12 together with stud bolt 13 and is connected.In addition, stator 20 is urceolus portion 24 and stud bolt 13 and the end 13a of pump case 12, the state of 12b butt.Therefore, under the state that is assembled with stator 20, the fastening force that is produced by crab-bolt 18 acted preferentially in the urceolus portion 24 before acting on lining portion 22, thereby can prevent from taking place in lining portion 22 or lining portion 22 towards axial big compression force the situation of compressive strain.In addition, can prevent the uneven wear of lining portion 22 thus, thereby can make the discharge-amount stabilization.
In the single shaft eccentrie helical totorpump 10 of present embodiment, the end 12b of pump case 12 and the end 13a of stud bolt 13 are provided with Embedded Division 12c, the 13b that can embed for lip part 26, and the lip part 26 that is embedded into the lining portion 22 of Embedded Division 12c, 13b is clamped between urceolus portion 24 and the stud bolt 13 and between urceolus portion 24 and the pump case 12.By like this, can prevent reliably that lining portion 22 is offset towards axial occurrence positions, thus the working state that can make single shaft eccentrie helical totorpump 10 stabilization more.
As mentioned above, the face shaping of the urceolus assembly department 28 of lining portion 22 forms polygon (in the present embodiment for roughly decagon).And then, outer barrel member 36,36 all bends to the shape similar with urceolus assembly department 28, and, by utilizing cramp 38 handle 40 is controlled and combination, thereby forms tubular urceolus portion 24 with urceolus assembly department 28 roughly the same shapes (in the present embodiment be roughly just decagon).By like this, even act on lining portion 22 towards the load of circumferencial direction, can prevent that also only the situation of occurrence positions skew along the circumferential direction goes up in lining portion 22, thereby can seek the stabilization of the working state of single shaft eccentrie helical totorpump 10.
In addition, because lining portion 22 forms polygon, therefore easily partition 25 is disposed at desirable position and zone.And then, because outer barrel member 36 forms the shape similar with the profile of lining portion 22, therefore, even crossing the angle that is formed at lining portion 22 peripheries and under a plurality of the situations that dispose partition 25, also can make partition 25 be bent into the surperficial similar shape of lining portion 22 reliably and be held, thus can the occurrence positions skew etc. situation.
In addition, in the present embodiment for preventing that lining portion 22 is with respect to the position skew of urceolus portion 24 and the purposes such as configuration simplification that make partition 25, example illustrates respectively urceolus assembly department 28 and urceolus portion 24 is formed polygonal example, but, under the situation of other structures that adopted the position skew that can prevent along the circumferential direction etc. or can not consider that the situation of position skew etc. along the circumferential direction is inferior, also can form the structure different with above-mentioned structure.Particularly, urceolus assembly department 28 and urceolus portion 24 have roughly the same section shape respectively, but, also can for example urceolus assembly department 28 be formed roughly positive decagon and urceolus portion 24 is formed the mode of positive dodecagon roughly etc., in the scope as the spline part performance function of lining portion 22, make both section shape differences.
In addition, interior all sides that also can form urceolus portion 24 are provided with the structure of projection, and form by urceolus portions 24 are installed at urceolus assembly department 28 and make above-mentioned projection with the state that is pressed and the outer circumferential face contacting structure of lining portion 22.According to this structure, projection is stuck on the outer circumferential face and partition 25 of lining portion 22, thus the situation such as come off of the along the circumferential direction and axially occurrence positions skew that can prevent lining portion 22 and partition 25.The structure of projection is set as mentioned above, not only as present embodiment, urceolus assembly department 28 or urceolus portion 24 formed under polygonal situation effectively, and also effective when being coming off of the position skew of worrying lining portion 22 under the situation cylindraceous, partition 25 etc. at the face shaping of lining portion 22.

Claims (13)

1. a single shaft eccentrie helical totorpump is characterized in that,
Possess: the rotor of external screw thread shape and can insert logical stator for described rotor;
Described stator has:
Lining portion, it is tubular and the inner peripheral surface with female thread shape,
Urceolus portion, it is configured to the periphery of described lining portion is surrounded, and is installed on described lining portion with unadhered state, and,
Adjustment component, it can make described urceolus portion radial deflection towards described lining portion in being equivalent to the zone of a circumferencial direction part at least.
2. a single shaft eccentrie helical totorpump is characterized in that,
Possess: the rotor of external screw thread shape and can insert logical stator for described rotor;
Described stator has:
Lining portion, it is tubular and the inner peripheral surface with female thread shape,
Urceolus portion, it forms the lining portion mounting zone that described lining portion is accommodated with unadhered state, and,
Adjustment component, its can make described lining portion mounting zone in the part of the circumferencial direction at least zone of described lining portion towards the radially expansion of described lining portion and/or dwindle.
3. a single shaft eccentrie helical totorpump is characterized in that,
Possess: the rotor of external screw thread shape and can insert logical stator for described rotor;
Described stator has:
Lining portion, it is tubular and the inner peripheral surface with female thread shape,
Urceolus portion, it forms the lining portion mounting zone that described lining portion is accommodated with unadhered state, and,
Adjustment component, it is by adjusting from the pressing force of described urceolus portion side towards the part of the circumferencial direction at least zone that acts radially on described lining portion, thus can make described lining portion mounting zone in the part of the circumferencial direction at least zone of described lining portion towards the radially expansion of described lining portion and/or dwindle.
4. as any described single shaft eccentrie helical totorpump in the claim 1～3, it is characterized in that, described adjustment component is made of partition, and described partition can insert between described lining portion and the described urceolus portion and/or detach between described lining portion and described urceolus portion.
5. as any described single shaft eccentrie helical totorpump in the claim 1～4, it is characterized in that,
Described urceolus portion can along the circumferential direction be divided into a plurality of outer barrel members;
Described outer barrel member has the lip part that extends along axial direction at the circumferencial direction two end part;
Described adjustment component is made of the union body that the lip part with the described outer barrel member of adjacency on the circumferencial direction connects each other, and described adjustment component can be adjusted described lip part interval each other.
6. single shaft eccentrie helical totorpump as claimed in claim 5 is characterized in that,
Described union body is made of the holding element of the described lip part of clamping.
7. a single shaft eccentrie helical totorpump is characterized in that,
Possess: the rotor of external screw thread shape and can insert logical stator for described rotor;
Described stator has:
Lining portion, its for tubular and have the female thread shape inner peripheral surface and
Urceolus portion, it is configured to the periphery of described lining portion is surrounded, and is installed on described lining portion with unadhered state;
In the part of circumferencial direction at least of described lining portion and be in the zone of extending of the axial direction along described lining portion, partition can be inserted between described lining portion and the described urceolus portion and/or described partition is detached between described lining portion and described urceolus portion.
8. a single shaft eccentrie helical totorpump is characterized in that,
Possess: the rotor of external screw thread shape and can insert logical stator for described rotor;
Described stator has:
Lining portion, its for tubular and have the female thread shape inner peripheral surface and
Urceolus portion, it is configured to the periphery of described lining portion is surrounded, and is installed on described lining portion with unadhered state;
Described urceolus portion can along the circumferential direction be divided into a plurality of outer barrel members;
Described outer barrel member has the lip part that extends along axial direction at the two end part of circumferencial direction, and, utilize union body that the lip part of the described outer barrel member of adjacency on the circumferencial direction is connected each other, can form described urceolus portion thus;
Described union body can be adjusted described lip part interval each other.
9. single shaft eccentrie helical totorpump as claimed in claim 8 is characterized in that,
Described union body is made of the holding element of the described lip part of clamping.
10. as any described single shaft eccentrie helical totorpump in the claim 1～9, it is characterized in that,
The two end part of described lining portion are provided with towards the outstanding flange shape portion of radial outside;
Described urceolus portion is configured between the described flange shape portion, and, end and described flange shape the butt of described urceolus portion.
11. as any described single shaft eccentrie helical totorpump in the claim 1～10, it is characterized in that described single shaft eccentrie helical totorpump possesses:
With a distolateral stud bolt that is connected of described stator,
With another distolateral pump case that is connected of described stator, and,
The crab-bolt that described stud bolt is connected with described pump case;
On described stud bolt and/or pump case, be provided with the nut portions that can screw togather with described crab-bolt;
By described crab-bolt and described nut portions are relatively rotated, can change the interval between described stud bolt and the described pump case.
12., it is characterized in that the profile of described lining portion is polygon as any described single shaft eccentrie helical totorpump in the claim 1～11.
13. single shaft eccentrie helical totorpump as claimed in claim 12 is characterized in that, described urceolus portion bends to the shape similar with the profile of described lining portion.
CN201180063149.9A 2010-12-27 2011-12-26 uniaxial eccentric screw pump Active CN103282664B (en)

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JP2010-290366 2010-12-27
JP2010290366A JP5821058B2 (en) 2010-12-27 2010-12-27 Uniaxial eccentric screw pump
PCT/JP2011/080135 WO2012090968A1 (en) 2010-12-27 2011-12-26 Uniaxial eccentric screw pump

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CN106415010A (en) * 2014-01-28 2017-02-15 兵神装备株式会社 Uniaxial eccentric screw pump
CN107208630A (en) * 2015-01-29 2017-09-26 耐驰泵及系统有限公司 Eccentrie helical totorpump and tune equipment, method with automatic regulating system
CN107743548A (en) * 2015-06-12 2018-02-27 耐驰泵及系统有限公司 Pump case for eccentrie helical totorpump and the eccentrie helical totorpump equipped with the pump case
CN109049570A (en) * 2018-10-24 2018-12-21 广州道注塑机械股份有限公司 A kind of extrusion device of injection material
CN114341496A (en) * 2019-07-16 2022-04-12 阿诺尔德耶格尔控股有限公司 Stator for eccentric screw pump
CN114423945A (en) * 2019-09-24 2022-04-29 兵神装备株式会社 Single-shaft eccentric screw pump

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JP2017535412A (en) * 2014-10-07 2017-11-30 アクセス ビジネス グループ インターナショナル リミテッド ライアビリティ カンパニー Personal preparation device
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CN106415010A (en) * 2014-01-28 2017-02-15 兵神装备株式会社 Uniaxial eccentric screw pump
CN106415010B (en) * 2014-01-28 2018-12-04 兵神装备株式会社 uniaxial eccentric screw pump
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CN107208630A (en) * 2015-01-29 2017-09-26 耐驰泵及系统有限公司 Eccentrie helical totorpump and tune equipment, method with automatic regulating system
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CN109049570A (en) * 2018-10-24 2018-12-21 广州道注塑机械股份有限公司 A kind of extrusion device of injection material
CN114341496A (en) * 2019-07-16 2022-04-12 阿诺尔德耶格尔控股有限公司 Stator for eccentric screw pump
CN114341496B (en) * 2019-07-16 2023-10-13 阿诺尔德耶格尔控股有限公司 Stator for eccentric screw pump
CN114423945A (en) * 2019-09-24 2022-04-29 兵神装备株式会社 Single-shaft eccentric screw pump
CN114423945B (en) * 2019-09-24 2023-06-27 兵神装备株式会社 Single-shaft eccentric screw pump

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KR20130131421A (en) 2013-12-03
WO2012090968A1 (en) 2012-07-05
JP2012137038A (en) 2012-07-19
EP2660471A4 (en) 2015-01-21
CN103282664B (en) 2017-02-15
KR101890001B1 (en) 2018-08-20
EP2660471A1 (en) 2013-11-06
JP5821058B2 (en) 2015-11-24

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