CN104226011B - A kind of draw bail - Google Patents
A kind of draw bail Download PDFInfo
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- CN104226011B CN104226011B CN201410371304.9A CN201410371304A CN104226011B CN 104226011 B CN104226011 B CN 104226011B CN 201410371304 A CN201410371304 A CN 201410371304A CN 104226011 B CN104226011 B CN 104226011B
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- tubular shell
- convex tendon
- coupling unit
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Abstract
The invention discloses a kind of draw bail, including tubular shell, sealing ring, fixed coupling unit and end cap；The edge of end cap is provided with the face of cylinder being assemblied within tubular shell, and the end on the face of cylinder extends outward the first annulus；The cylinder axis on the face of cylinder is parallel with the axis of tubular shell, and the first annulus place plane is vertical with the axis of tubular shell；In a tubular form, its end is provided with the second annulus stretched in central axis to fixed coupling unit；The lateral wall of the inwall of tubular shell, the inwall of the second annulus, the face of cylinder and the first annulus limits an annular space jointly, and sealing ring is arranged in this annular space；The inwall of fixed coupling unit is circumferentially uniformly provided with 2～4 row the second convex tendons；The outer wall of tubular shell end is provided with the first convex tendon engaged each other accordingly and quantity is identical with the second convex tendon.Just the circumferential orientation rotation of two parts can be put in place as long as the present invention rotates 45 degree or 60 degree or 90 degree, substantially increase dismounting speed.
Description
Technical field
The present invention relates to a kind of draw bail.
Background technology
Adopting the tubular shell draw bail of thread connection or its end cap draw bail, it is capable of dismounting, is particularly applied in water purifier filter element shell, and filter element shell just can be reused, and is a kind of low-carbon environment-friendly structure saved material.Owing to the filter element of water purifier generally all bears interior pressure, it is desirable to draw bail has higher intensity and sealing, in order to ensure to couple quality, generally it is desirable that effective thread must not enclose less than 3, is usually designed to 3～5 circles.So, during dismounting, having a few circle screw thread to be accomplished by rotating a few circle, dismounting speed is fast not, does not slightly want to take the trouble.On the other hand, after screwed tight, there is the trend automatically unclamped, loosen to prevent product produced vibration in transportation from causing coupling, generally have two kinds of ways:
1, by increasing sealing ring and the contact area of part that contacts carrys out increasing friction force, but after frictional force increases, dismounting also becomes relatively elaborate, which increases the difficulty of dismounting.
2, the lift angle of screw thread is reduced, or it is called reduction pitch, fine thread is changed into by coarse thread, so can reducing two parts loosening force on thread contact face, namely fine thread has and better loosens performance, but, the linking intensity of fine thread is not so good as coarse thread, and the machining accuracy of part is proposed requirements at the higher level, the method being in this way to increase cost, and can not use when draw bail requires and bears more intrinsic pressure.
Utility model summary of the invention
It is an object of the invention to provide a kind of simple in construction, dismount fireballing draw bail, be particularly well-suited to household water-purifying machine filter element shell and the connection of filter element lid, it is also possible in the structure that other is similar.
The first technical scheme realizing the object of the invention is: a kind of draw bail, including tubular shell, sealing ring, fixed coupling unit and end cap；The edge of described end cap is provided with the face of cylinder being assemblied within tubular shell, and the end on the face of cylinder extends outward the first annulus；The cylinder axis on the described face of cylinder is parallel with the axis of tubular shell, and the first annulus place plane is vertical with the axis of tubular shell；In a tubular form, its end is provided with the second annulus stretched in central axis to described fixed coupling unit；The lateral wall of the inwall of described tubular shell, the inwall of the second annulus, the face of cylinder and the first annulus limits an annular space jointly, and described sealing ring is arranged in this annular space；The inwall of described fixed coupling unit is circumferentially uniformly provided with 2～4 row the second convex tendons；The outer wall of described tubular shell end is provided with the first convex tendon that the second convex tendon with fixed coupling unit engages each other accordingly and quantity is identical.
The inwall of the second annulus of described fixed coupling unit is provided with the first short tube；The lateral wall of the inwall of described tubular shell, the end face of the first short tube, the face of cylinder and the first annulus limits an annular space jointly, and described sealing ring is arranged in this annular space.
The size in the circumferential space that the circumferential size of the second convex tendon on the inwall of described fixed coupling unit is not more than between adjacent two row the first convex tendons on the end outer wall of tubular shell, or the circumferential size of the size of the circular gap between adjacent two row the second convex tendons on the inwall of described fixed coupling unit the first convex tendon of being not less than on the outer wall of tubular shell end.
The shape of cross section of the first convex tendon of described tubular shell and the second convex tendon of fixed coupling unit is rectangle, trapezoidal or zigzag.
On described tubular shell, the quantity of each column the first convex tendon is 1～6, it is preferable that scheme is 2～4.
First convex tendon of described tubular shell and the second convex tendon of fixed coupling unit are interrupted annular convex rib or interrupted multiple thread, or are combined by interrupted annular convex rib and interrupted multiple thread.
The inwall of described tubular shell is provided with ring-shaped platform near the position of end；The internal diameter of described ring-shaped platform is less than the external diameter of the first annulus on end cap.
Described end cap is provided with spacing ring or limited cover；Described spacing ring or limited cover are positioned at the outside of fixed coupling unit, and the overall diameter of spacing ring or limited cover is more than the interior diameter of the second annulus.
The size in the cross section of the described sealing ring gap being sized larger than between tubular shell inwall and the face of cylinder of end cap on the axis direction being perpendicular to tubular shell.
Described tubular shell, fixed coupling unit and end cap all adopt nonmetallic materials manufacture, when applying as water purifier housing, preferably employ the plastics manufacture of foodstuff sanitation-stage, for instance Merlon (PC), polypropylene (PP), poly terephthalic acid (PET) etc..Plastics are the macromolecule organic materials that chemical stability is fabulous in normal-temperature water, it likely dissolves metal ion unlike metal material in water, cause material corrosion, wherein dissolve the metal ion if belonging to harmful heavy metal and also drinking water can being polluted, so, filter element shell in household water-purifying machine, almost all adopts plastic material manufacture.Adopting plastic material can pass through injection moulding or blow moiding method shapes, the production cycle (i.e. injection cycle or beat) of plastic part, production efficiency was very high, and can accomplish product surface health at about 1 minute, it is not necessary to product is cleaned again.And adopt metal material manufacture often to expend more production hour, production efficiency is relatively low, and the frequent lubricated greasy dirt dye of part, will make piece surface reach the requirement of foodstuff sanitation-stage, generally require and metal parts carries out perfect oil removing matting more in process of production.
The second technical scheme realizing the object of the invention is: a kind of draw bail, including tubular shell, sealing ring and end cap；The periphery of described end cap is provided with the second short tube；The inwall of described second short tube is circumferentially uniformly provided with 2～4 and arranges the 3rd convex tendon；Being provided with placing the annular space of sealing ring between lateral surface or medial surface or end face and the inwall of end cap of described tubular shell end, described sealing ring is arranged in this annular space；The outer wall of described tubular shell end is provided with the first convex tendon that the 3rd convex tendon engages each other accordingly and quantity is identical with end cap.
The cross section of described sealing ring be shaped as rectangle or circular or oval.
The size in the circumferential space that the circumferential size of the 3rd convex tendon on the inwall of described end cap is not more than between adjacent two row the first convex tendons on the end outer wall of tubular shell, or the circumferential size of the first convex tendon that is not less than on the outer wall of tubular shell end of adjacent two sizes arranging the circular gap between the 3rd convex tendon on the inwall of described end cap.
The shape of cross section of the first convex tendon of described tubular shell and the 3rd convex tendon of end cap is rectangle, trapezoidal or zigzag.
On described tubular shell, the quantity of each column the first convex tendon is 1～6, it is preferable that scheme is 2～4.
First convex tendon of described tubular shell and the 3rd convex tendon of end cap are interrupted annular convex rib or interrupted multiple thread, or are combined by interrupted annular convex rib and interrupted multiple thread.
Described tubular shell and end cap all adopt nonmetallic materials manufacture, when applying as water purifier housing, preferably employ the plastics manufacture of foodstuff sanitation-stage, for instance Merlon (PC), polypropylene (PP), poly terephthalic acid (PET) etc..Plastics are the macromolecule organic materials that chemical stability is fabulous in normal-temperature water, it likely dissolves metal ion unlike metal material in water, cause material corrosion, wherein dissolve the metal ion if belonging to harmful heavy metal and also drinking water can being polluted, so, filter element shell in household water-purifying machine, almost all adopts plastic material manufacture.Adopting plastic material can pass through injection moulding or blow moiding method shapes, the production cycle (i.e. injection cycle or beat) of plastic part, production efficiency was very high, and can accomplish product surface health at about 1 minute, it is not necessary to product is cleaned again.And adopt metal material manufacture often to expend more production hour, production efficiency is relatively low, and the frequent lubricated greasy dirt dye of part, will make piece surface reach the requirement of foodstuff sanitation-stage, generally require and metal parts carries out perfect oil removing matting more in process of production.
The third technical scheme realizing the object of the invention is: a kind of draw bail, including sealing ring, fixed coupling unit, the first tubular shell and the second tubular shell；The end of described first tubular shell is provided with the gradually big conical stub of a diameter and holds, the big of conical stub, the short tube always that stretches out；The outer wall of described straight short tube is circumferentially uniformly provided with 2～4 and arranges the 4th convex tendon；In a tubular form, its end is provided with the second annulus stretched in central axis to described fixed coupling unit；The inwall of described fixed coupling unit is provided with the second convex tendon that the 4th convex tendon engages each other accordingly and quantity is identical with the first tubular shell；The end of described second tubular shell is provided with outward extending 3rd annulus；The outer wall of described second tubular shell, the lateral wall of the 3rd annulus, the inwall of straight short tube and the inwall of the second annulus limit an annular space jointly, and described sealing ring is arranged in this annular space.
The inwall of the second annulus of described fixed coupling unit is provided with the first short tube；The outer wall of described second tubular shell, the outer wall of the 3rd annulus, the inwall of straight short tube and the inner face of the first short tube limit an annular space jointly, and described sealing ring is arranged in this annular space.
Adjacent two sizes arranging circumferential space between the 4th convex tendon that the circumferential size of the second convex tendon on the inwall of described fixed coupling unit is not more than on the straight short tube outer wall of the first tubular shell, or the circumferential size of the size of the circular gap between adjacent two row the second convex tendons on the inwall of described fixed coupling unit the 4th convex tendon that is not less than on the straight short tube outer wall of the first tubular shell.
The 4th convex tendon and the shape of cross section of the second convex tendon of fixed coupling unit on the straight short tube of described first tubular shell are rectangle, trapezoidal or zigzag.
On the straight short tube of described first tubular shell, the quantity of each column the 4th convex tendon is 1～6 article, it is preferable that scheme is 2～4.
The 4th convex tendon and the second convex tendon of fixed coupling unit on the straight short tube of described first tubular shell are interrupted annular convex rib or interrupted multiple thread, or are combined by interrupted annular convex rib and interrupted multiple thread.
Described fixed coupling unit, the first tubular shell and the second tubular shell all adopt nonmetallic materials manufacture, when applying as water purifier housing, preferably employ the plastics manufacture of foodstuff sanitation-stage, for instance Merlon (PC), polypropylene (PP), poly terephthalic acid (PET) etc..Plastics are the macromolecule organic materials that chemical stability is fabulous in normal-temperature water, it likely dissolves metal ion unlike metal material in water, cause material corrosion, wherein dissolve the metal ion if belonging to harmful heavy metal and also drinking water can being polluted, so, filter element shell in household water-purifying machine, almost all adopts plastic material manufacture.Adopting plastic material can pass through injection moulding or blow moiding method shapes, the production cycle (i.e. injection cycle or beat) of plastic part, production efficiency was very high, and can accomplish product surface health at about 1 minute, it is not necessary to product is cleaned again.And adopt metal material manufacture often to expend more production hour, production efficiency is relatively low, and the frequent lubricated greasy dirt dye of part, will make piece surface reach the requirement of foodstuff sanitation-stage, generally require and metal parts carries out perfect oil removing matting more in process of production.
Have employed technique scheme, the present invention has following beneficial effect: be circumferentially uniformly provided with 2～4 row the second convex tendons on the inwall of the fixed coupling unit of (1) present invention, the outer wall of tubular shell end is provided with the first convex tendon that the second convex tendon with fixed coupling unit engages each other accordingly and quantity is identical, as long as therefore the circumferential orientation rotation of two parts just can be put in place by present invention rotation 45 degree or 60 degree or 90 degree, substantially increase dismounting speed.
(2) size in the circumferential space that the circumferential size of the second convex tendon on the inwall of the fixed coupling unit of the present invention is not more than between adjacent two row the first convex tendons on the end outer wall of tubular shell, or the circumferential size of the first convex tendon that the size of the circular gap between adjacent two row the second convex tendons on the inwall of described fixed coupling unit is not less than on the outer wall of tubular shell end, this structure ensure that the convex tendon on fixed coupling unit inner surface and the convex tendon on the outer surface of tubular shell end can mutually assemble accordingly and engage.
(3) first convex tendon of the present invention, second convex tendon, 3rd convex tendon, 4th convex tendon is interrupted annular convex rib, or interrupted multiple thread, or combined by interrupted annular convex rib and interrupted multiple thread, the benefit of interrupted annular convex rib is: both will not be made axially to produce relative displacement in the two mutual rotary courses of part, the plane of a loop at annular convex rib place is vertical with the axis of tubular shell, thus contact surface both can not produce the power that both can be made close to each other, it is also impossible to produce to make both tend to power separately, this structure has good locking functions；Interrupted multiple-threaded benefit is: both can be made axially to produce relative displacement in the two mutual rotary courses of part, for screwing the draw bail needing to make sealing ring produce compression in process, it is possible to use this characteristic applies pretightning force to sealing ring.
(4) size in the cross section of the sealing ring of the present invention gap being sized larger than between tubular shell inwall and the face of cylinder of end cap on the axis direction being perpendicular to tubular shell, this structure produces less pretightning force naturally after sealing ring is seated, the leakage that this pretightning force is prevented from tubular shell low-pressure fluid, thus ensureing the sealing property of draw bail, the present invention is made both to have had the characteristic of fast assembling-disassembling, there is again locking or water hammer-resistant shake the performance of pine, and joint pretension function can also realize.
(5) the sealing structure of the present invention, when in housing, pressure increases, the power on end cap that acts on will compresses seal, sealing ring is made to be deformed, this deformation is tighter thus strengthening sealing property by making sealing ring obtain with the cylindrical surface adhesive on case inside wall and end cap respectively, it is simply that utilize pressure in housing to strengthen sealing effectiveness, reach that dismounting is laborsaving, the purpose of good sealing effect.
Accompanying drawing explanation
Being clearly understood to make present disclosure be easier to, below according to specific embodiment and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the C-C sectional view of Fig. 1.
Fig. 5 is the expanded view of the tubular shell of embodiments of the invention 1.
Fig. 6 is the structural representation of embodiments of the invention 2.
Fig. 7 is the D place enlarged drawing of Fig. 6.
Fig. 8 is the partial enlarged drawing of embodiments of the invention 3, and the position of this amplification is identical with the A place of Fig. 1.
Fig. 9 is the partial sectional view of embodiments of the invention 4, and its position cutd open is identical with the B-B place of Fig. 1.
Figure 10 is the partial sectional view of embodiments of the invention 4, and its position cutd open is identical with the C-C place of Fig. 1.
Figure 11 is the expanded view of the tubular shell of embodiments of the invention 4.
Figure 12 is the partial sectional view of embodiments of the invention 5, and its position cutd open is identical with the B-B place of Fig. 1.
Figure 13 is the partial sectional view of embodiments of the invention 5, and its position cutd open is identical with the C-C place of Fig. 1.
Figure 14 is the expanded view of the tubular shell of embodiments of the invention 5.
Figure 15 is the expanded view of the tubular shell of embodiments of the invention 6.
Figure 16 is the expanded view of the tubular shell of embodiments of the invention 7.
Figure 17 is the structural representation of embodiments of the invention 8.
Figure 18 is the structural representation of embodiments of the invention 9.
Figure 19 is the structural representation of embodiments of the invention 10.
Figure 20 is the structural representation of embodiments of the invention 11.
Being numbered in accompanying drawing:
Tubular shell the 1, first convex tendon 1-1, ring-shaped platform 1-2, sealing ring 2, fixed coupling unit the 3, second annulus 3-1, the second convex tendon 3-2, the first short tube 3-3, reinforcement 3-4, end cap 4, face of cylinder 4-1, the first annulus 4-2, spacing ring 4-3, the second short tube 4-4, the 3rd convex tendon 4-5, limited cover 4-6, the first tubular shell 5, conical stub 5-1, straight short tube 5-2, the 4th convex tendon 5-3, the second tubular shell the 6, the 3rd annulus 6-1.
Detailed description of the invention
(embodiment 1)
Seeing Fig. 1 to Fig. 5, the draw bail of the present embodiment, including tubular shell 1, sealing ring 2, fixed coupling unit 3 and end cap 4.
The edge of end cap 4 is provided with the face of cylinder 4-1 being assemblied within tubular shell 1, and the end of face of cylinder 4-1 extends outward the first annulus 4-2.The cylinder axis of face of cylinder 4-1 is parallel with the axis of tubular shell 1, and the first annulus 4-2 place plane is vertical with the axis of tubular shell 1.In a tubular form, its end is provided with the second annulus 3-1 stretched in central axis to fixed coupling unit 3.The lateral wall of the inwall of tubular shell 1, the inwall of the second annulus 3-1, face of cylinder 4-1 and the first annulus 4-2 limits an annular space jointly, and sealing ring 2 is arranged in this annular space.The size in the gap between the cross section of sealing ring 2 face of cylinder 4-1 being sized larger than tubular shell inwall 1 and end cap 4 on the axis direction being perpendicular to tubular shell 1.End cap 4 is additionally provided with spacing ring 4-3.Spacing ring 4-3 is positioned at the outside of fixed coupling unit 3 and the interior diameter that the overall diameter of spacing ring 4-3 is more than the second annulus 3-1.
The inwall of fixed coupling unit 3 is circumferentially uniformly provided with 4 row the second convex tendon 3-2.The outer wall of tubular shell 1 end is provided with the first convex tendon 1-1 that the second convex tendon 3-2 with fixed coupling unit 3 engages each other accordingly and quantity is identical.The shape of cross section of the first convex tendon 1-1 of tubular shell 1 and the second convex tendon 3-2 of fixed coupling unit 3 is rectangle, trapezoidal or zigzag.First convex tendon 1-1 of tubular shell 1 and the second convex tendon 3-2 of fixed coupling unit 3 is interrupted annular convex rib.The upper surface of fixed coupling unit 3 is additionally provided with at least one reinforcement 3-4.
The quantity of each column the first convex tendon 1-1 and each column the second convex tendon 3-2 is 1～6, depending on the load that convex tendon bears, when the pressure in tubular shell 1 is bigger, need to arrange more bar number, otherwise less bar number can be set, specifically should arrange how many and convex tendon cross-sectional area takes and much can determine by checking the intensity of convex tendon by the knowledge in the mechanics of materials.
In order to ensure that the second convex tendon 3-2 on the inwall of fixed coupling unit 3 and the first convex tendon 1-1 on the outer wall of tubular shell 1 end can mutually assemble accordingly and engage, the size in the circumferential space that the circumferential size of the second convex tendon 3-2 on the inwall of fixed coupling unit 3 is not more than between adjacent two row the first convex tendon 1-1 on the end outer wall of tubular shell 1, or the circumferential size of the size of the circular gap between adjacent two row the second convex tendon 3-2 on the inwall of fixed coupling unit 3 the first convex tendon 1-1 of being not less than on the outer wall of tubular shell 1 end.So, during assembling, the second convex tendon 3-2 on the inwall of fixed coupling unit 3 can pass from the space between adjacent two row the first convex tendon 1-1 the end outer wall of tubular shell 1, or, the first convex tendon 1-1 on the end outer wall of tubular shell 1 can pass from the space between adjacent two row the second convex tendon 3-2 the inwall of fixed coupling unit 3, the relative axial position making fixed coupling unit 3 and tubular shell 1 just can be seated in moment, then one of them part is rotated again so as to produce Relative angular displacement, the circumferentially opposed orientation making both is seated.Clearly for said structure, the first convex tendon 1-1 and the second convex tendon 3-2 of the present embodiment are 4 row, then the angle rotated is 45 degree, it becomes possible to make both circumferentially opposed orientation reach setting position.
The feature of annular convex rib is: both will not be made axially to produce relative displacement in the two mutual rotary courses of part, the plane of a loop at annular convex rib place is vertical with the axis of tubular shell, thus contact surface both can not produce the power that both can be made close to each other, it is also impossible to produce to make both tend to power separately, so this structure inherently has good locking functions.But, this structure owing to both can not be made axially to produce relative displacement, also cannot apply pretightning force to sealing ring in screwing process, and the problem of sealing ring pretightning force to be solved by other method.
So, by the size in the cross section of sealing ring 2 gap being dimensioned between more than the face of cylinder 4-1 of tubular shell inwall 1 and end cap 4 on the axis direction being perpendicular to tubular shell 1.So, sealing ring 2 just creates less pretightning force after being seated naturally, and this pretightning force can be enough to prevent the leakage of low-pressure fluid in tubular shell 1.After the pressure in tubular shell 1 rises, intrinsic pressure will act on end cap 4, intrinsic pressure is passed on fixed coupling unit 3 on the second annulus 3-1 stretched by sealing ring 2 by end cap 4 more with joint efforts, then sealing ring 2 is compressed in tubular shell 1 axially direction, sealing ring 2 must be caused to expand to the direction axially perpendicular with tubular shell 1, sealing ring 2 once expand will respectively with the inner surface of tubular shell 1 end and end cap 4 periphery outside face of cylinder 4-1 fit tightly such that it is able to ensure connecting joint sealing property.It is simply that after other design considerations of this annular convex rib and this programme combines, both there is the characteristic of fast assembling-disassembling, there is again locking or water hammer-resistant and shake the performance of pine, and joint pretension function can also realize.
(embodiment 2)
Seeing Fig. 6 and Fig. 7, the present embodiment is substantially the same manner as Example 1, is different in that: the inwall of the second annulus 3-1 of fixed coupling unit 3 is provided with the first short tube 3-3.The lateral wall of the inwall of tubular shell 1, the end face of the first short tube 3-3, face of cylinder 4-1 and the first annulus 4-2 limits an annular space jointly, and sealing ring 2 is arranged in this annular space.End cap 4 is provided with limited cover 4-6.Limited cover 4-6 is positioned at the outside of fixed coupling unit 3 and the interior diameter that the overall diameter of spacing ring 4-3 or limited cover 4-6 is more than the second annulus 3-1.
(embodiment 3)
Seeing Fig. 8, the present embodiment is substantially the same manner as Example 1, is different in that: the inwall of tubular shell 1 is provided with ring-shaped platform 1-2 near the position of end.The internal diameter of the ring-shaped platform 1-2 external diameter less than the first annulus 4-2 on end cap 4.
Ring-shaped platform 1-2 can stop that end cap 4 continues to move inward from tubular shell 1 end, the determination principle of described position is: during assembling, when end cap 4, fixed coupling unit 3 and tubular shell 1 are after axial relative position reaches setting position, can guarantee that sealing ring 2 produces enough decrements, after sealing ring 2 produces enough decrements, rotate fixed coupling unit 3 or tubular shell 1 again, make rotation fixed coupling unit 3 and tubular shell 1 be also fitted with putting in place in circumference.The draw bail so assembled, sealing ring 2 has a small amount of decrement, ensure that and realize when tubular shell 1 internal pressure is relatively low sealing, and for tubular shell 1 internal pressure higher time, then can automatically increase the decrement of sealing ring 2, improve sealing property, namely the sealing of draw bail is as the pressure rising in tubular shell 1 and improves, meanwhile, the trend that draw bail is not unclamped automatically, namely there is good anti-loosening property.
(embodiment 4)
Seeing Fig. 9 to Figure 11, the present embodiment is substantially the same manner as Example 1, is different in that: be circumferentially uniformly provided with 3 row the second convex tendon 3-2 on the inwall of fixed coupling unit 3.The outer wall of tubular shell 1 end is provided with the first convex tendon 1-1 that the second convex tendon 3-2 with fixed coupling unit 3 engages each other accordingly and quantity is identical.
The first convex tendon 1-1 and the second convex tendon 3-2 of the present embodiment are 3 row, then the angle rotated is 60 degree, it becomes possible to make both circumferentially opposed orientation reach setting position.
(embodiment 5)
Seeing Figure 12 to Figure 14, the present embodiment is substantially the same manner as Example 1, is different in that: be circumferentially uniformly provided with 2 row the second convex tendon 3-2 on the inwall of fixed coupling unit 3.The outer wall of tubular shell 1 end is provided with the first convex tendon 1-1 that the second convex tendon 3-2 with fixed coupling unit 3 engages each other accordingly and quantity is identical.
The first convex tendon 1-1 and the second convex tendon 3-2 of the present embodiment are 2 row, and the angle of rotation is 90 degree, it becomes possible to make both circumferentially opposed orientation reach setting position
(embodiment 6)
Seeing Figure 15, the present embodiment is substantially the same manner as Example 1, is different in that: the first convex tendon 1-1 of tubular shell 1 and the second convex tendon 3-2 of fixed coupling unit 3 is interrupted multiple thread.
Interrupted multiple-threaded benefit is: both can be made axially to produce relative displacement in the two mutual rotary courses of part, for screwing the draw bail needing to make sealing ring produce compression in process, it is possible to use this characteristic applies pretightning force to sealing ring；Its disadvantageous one side is: there is oblique component, this component and tubular shell axis out of plumb on the helicoid in this draw bail, it has the trend making two parts unclamp.
(embodiment 7)
Seeing Figure 16, the present embodiment is substantially the same manner as Example 1, is different in that: the first convex tendon 1-1 of tubular shell 1 and the second convex tendon 3-2 of fixed coupling unit 3 combines by interrupted annular convex rib and interrupted multiple thread.
(embodiment 8)
Seeing Figure 17, the draw bail of the present embodiment, including tubular shell 1, sealing ring 2 and end cap 4.
The periphery of end cap 4 is provided with the second short tube 4-4.The inwall of the second short tube 4-4 is circumferentially uniformly provided with 2～4 and arranges the 3rd convex tendon 4-5.Being provided with placing the annular space of sealing ring 2 between lateral surface and the inwall of end cap 4 of tubular shell 1 end, sealing ring 2 is arranged in this annular space.The outer wall of tubular shell 1 end is provided with the first convex tendon 1-1 that the 3rd convex tendon 4-5 with end cap 4 engages each other accordingly and quantity is identical.
The cross section of sealing ring 2 be shaped as rectangle or circular or oval.
The size in the circumferential space that the circumferential size of the 3rd convex tendon 4-5 on the inwall of end cap 4 is not more than between adjacent two row the first convex tendon 1-1 on the end outer wall of tubular shell 1, or the circumferential size of the first convex tendon 1-1 that is not less than on the outer wall of tubular shell 1 end of adjacent two sizes arranging the circular gap between the 3rd convex tendon 4-5 on the inwall of end cap 4.
The shape of cross section of the first convex tendon 1-1 of tubular shell 1 and the 3rd convex tendon 4-5 of end cap 4 is rectangle, trapezoidal or zigzag.
On tubular shell 1, the quantity of each column the first convex tendon 1-1 is 1～6.
First convex tendon 1-1 of tubular shell 1 and the 3rd convex tendon 4-5 of end cap 4 is interrupted annular convex rib or interrupted multiple thread, or is combined by interrupted annular convex rib and interrupted multiple thread.
(embodiment 9)
Seeing Figure 18, the present embodiment is substantially the same manner as Example 8, is different in that: being provided with placing the annular space of sealing ring 2 between medial surface and the inwall of end cap 4 of tubular shell 1 end, sealing ring 2 is arranged in this annular space.
(embodiment 10)
Seeing Figure 19, the present embodiment is substantially the same manner as Example 8, is different in that: being provided with placing the annular space of sealing ring 2 between end face and the inwall of end cap 4 of tubular shell 1 end, sealing ring 2 is arranged in this annular space.
(embodiment 11)
Seeing Figure 20, the draw bail of the present embodiment, including sealing ring 2, fixed coupling unit the 3, first tubular shell 5 and the second tubular shell 6.
The end of the first tubular shell 5 is provided with the gradually big conical stub 5-1 of a diameter and holds, the big of conical stub 5-1, the short tube 5-2 always that stretches out.The outer wall of straight short tube 5-1 is circumferentially uniformly provided with 2～4 and arranges the 4th convex tendon 5-3.In a tubular form, its end is provided with the second annulus 3-1 stretched in central axis to fixed coupling unit 3.The inwall of fixed coupling unit 3 is provided with the second convex tendon 3-2 engaged each other accordingly with the 4th convex tendon 5-3 of the first tubular shell 5 and quantity is identical.On the straight short tube 5-2 of the first tubular shell 5, the quantity of each column the 4th convex tendon 5-3 is 1～6 article.The 4th convex tendon 5-3 and the shape of cross section of the second convex tendon 3-2 of fixed coupling unit 3 on the straight short tube 5-2 of the first tubular shell 5 are rectangle, trapezoidal or zigzag.The 4th convex tendon 5-3 and the second convex tendon 3-2 of fixed coupling unit 3 on the straight short tube 5-2 of the first tubular shell 5 are interrupted annular convex rib or interrupted multiple thread, or are combined by interrupted annular convex rib and interrupted multiple thread.Adjacent two sizes arranging circumferential space between the 4th convex tendon 5-3 that the circumferential size of the second convex tendon 3-2 on the inwall of fixed coupling unit 3 is not more than on the straight short tube 5-2 outer wall of the first tubular shell 5, or the circumferential size of the size of the circular gap between adjacent two row the second convex tendon 3-2 on the inwall of fixed coupling unit 3 the 4th convex tendon 5-3 that is not less than on the straight short tube 5-2 outer wall of the first tubular shell 5.
The end of the second tubular shell 6 is provided with outward extending 3rd annulus 6-1.The outer wall of the second tubular shell 6, the lateral wall of the 3rd annulus 6-1, the inwall of straight short tube 5-2 and the inwall of the second annulus 3-1 limit an annular space jointly, and sealing ring 2 is arranged in this annular space.
The inwall of the second annulus 3-1 of fixed coupling unit 3 is provided with the first short tube 3-3.The outer wall of the second tubular shell 6, the outer wall of the 3rd annulus 6-1, the inwall of straight short tube 5-2 and the inner face of the first short tube 3-3 limit an annular space jointly, and sealing ring 2 is arranged in this annular space.
Particular embodiments described above; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; it is not limited to the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. a draw bail, it is characterised in that: include sealing ring (2), fixed coupling unit (3), the first tubular shell (5) and the second tubular shell (6)；The end of described first tubular shell (5) is provided with the gradually big conical stub of a diameter (5-1) and holds, the big of conical stub (5-1), short tube (5-2) always that stretch out；The outer wall of described straight short tube (5-2) is circumferentially uniformly provided with 2～4 and arranges the 4th convex tendon (5-3)；In a tubular form, its end is provided with the second annulus (3-1) stretched in central axis to described fixed coupling unit (3)；The inwall of described fixed coupling unit (3) is provided with the 4th the second convex tendon (3-2) that convex tendon (5-3) engages each other accordingly and quantity is identical with the first tubular shell (5)；The end of described second tubular shell (6) is provided with outward extending 3rd annulus (6-1)；The outer wall of described second tubular shell (6), the lateral wall of the 3rd annulus (6-1), the inwall of straight short tube (5-2) and the inwall of the second annulus (3-1) limit an annular space jointly, and described sealing ring (2) is arranged in this annular space.
2. a kind of draw bail according to claim 1, it is characterised in that: the inwall of second annulus (3-1) of described fixed coupling unit (3) is provided with the first short tube (3-3)；The outer wall of described second tubular shell (6), the outer wall of the 3rd annulus (6-1), the inwall of straight short tube (5-2) and the inner face of the first short tube (3-3) limit an annular space jointly, and described sealing ring (2) is arranged in this annular space.
3. a kind of draw bail according to claim 1, it is characterized in that: adjacent two sizes arranging circumferential space between the 4th convex tendon (5-3) that the circumferential size of the second convex tendon (3-2) on the inwall of described fixed coupling unit (3) is not more than on straight short tube (5-2) outer wall of the first tubular shell (5), or the circumferential size of the 4th convex tendon (5-3) that the size of the circular gap between adjacent two row the second convex tendon (3-2) on the inwall of described fixed coupling unit (3) is not less than on straight short tube (5-2) outer wall of the first tubular shell (5).
4. a kind of draw bail according to claim 1, it is characterised in that: the 4th convex tendon (5-3) and the shape of cross section of second convex tendon (3-2) of fixed coupling unit (3) on the straight short tube (5-2) of described first tubular shell (5) are rectangle, trapezoidal or zigzag.
5. a kind of draw bail according to claim 1, it is characterised in that: the quantity of the upper each column the 4th convex tendon (5-3) of the straight short tube (5-2) of described first tubular shell (5) is 1～6 article.
6. a kind of draw bail according to claim 1, it is characterized in that: the 4th convex tendon (5-3) and second convex tendon (3-2) of fixed coupling unit (3) on the straight short tube (5-2) of described first tubular shell (5) are interrupted annular convex rib, or interrupted multiple thread, or combined by interrupted annular convex rib and interrupted multiple thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371304.9A CN104226011B (en) | 2014-07-30 | 2014-07-30 | A kind of draw bail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371304.9A CN104226011B (en) | 2014-07-30 | 2014-07-30 | A kind of draw bail |
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| Publication Number | Publication Date |
|---|---|
| CN104226011A CN104226011A (en) | 2014-12-24 |
| CN104226011B true CN104226011B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410371304.9A Active CN104226011B (en) | 2014-07-30 | 2014-07-30 | A kind of draw bail |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105202185B (en) * | 2015-09-21 | 2018-08-24 | 江苏沁尔康环境电器有限公司 | A kind of self-tightening type barrel body end cover sealing connection structure |
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| US20030226790A1 (en) * | 2002-06-07 | 2003-12-11 | Baldwin Filters, Inc. | Housing for environmentally friendly filter cartridge |
| EP1961948A2 (en) * | 2007-02-22 | 2008-08-27 | Mann+Hummel Gmbh | Filter, particularly fuel filter |
| CN201643864U (en) * | 2010-04-02 | 2010-11-24 | 艾欧史密斯（上海）水处理产品有限公司 | Shell of reverse osmosis filter |
| CN201799165U (en) * | 2010-09-21 | 2011-04-20 | 浙江沁园水处理科技股份有限公司 | Filter element case anti-loosing structure |
| CN202778013U (en) * | 2012-09-11 | 2013-03-13 | 江苏正本净化节水科技实业有限公司 | Composite filter cartridge |
| CN204051212U (en) * | 2014-07-30 | 2014-12-31 | 江苏正本净化节水科技实业有限公司 | A kind of draw bail |
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2014
- 2014-07-30 CN CN201410371304.9A patent/CN104226011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030226790A1 (en) * | 2002-06-07 | 2003-12-11 | Baldwin Filters, Inc. | Housing for environmentally friendly filter cartridge |
| EP1961948A2 (en) * | 2007-02-22 | 2008-08-27 | Mann+Hummel Gmbh | Filter, particularly fuel filter |
| CN201643864U (en) * | 2010-04-02 | 2010-11-24 | 艾欧史密斯（上海）水处理产品有限公司 | Shell of reverse osmosis filter |
| CN201799165U (en) * | 2010-09-21 | 2011-04-20 | 浙江沁园水处理科技股份有限公司 | Filter element case anti-loosing structure |
| CN202778013U (en) * | 2012-09-11 | 2013-03-13 | 江苏正本净化节水科技实业有限公司 | Composite filter cartridge |
| CN204051212U (en) * | 2014-07-30 | 2014-12-31 | 江苏正本净化节水科技实业有限公司 | A kind of draw bail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104226011A (en) | 2014-12-24 |
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