CN2036963U - Sealing device at end of axle head of rotary spherical digester - Google Patents
Sealing device at end of axle head of rotary spherical digester Download PDFInfo
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- CN2036963U CN2036963U CN 88218057 CN88218057U CN2036963U CN 2036963 U CN2036963 U CN 2036963U CN 88218057 CN88218057 CN 88218057 CN 88218057 U CN88218057 U CN 88218057U CN 2036963 U CN2036963 U CN 2036963U
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- rotary spherical
- spherical digester
- sealing
- sealing device
- joint pipe
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Abstract
The utility model relates to a sealing device at end of the axle head of a rotary spherical digester, relating to the technologies of the digester and the rotary seal. The sealing device at end of the axle head of a rotary spherical digester comprises a releasing end and an air inlet end. The design adopts a flexible combined soft seal between the stuffing box seal and the mechanical seal, the air inlet end is dual flexible soft seal, and the structure of the releasing end is a releasing shaft head-a control valve-a sealing joint, which is an unpressurized operation type flexible combined soft seal. The design improves the sealing performance of the sealing device at end of the axle head of a rotary spherical digester and clears the medium leakage. The utility model is an ideal sealing device at end of the axle head of a rotary spherical digester.
Description
The end of axle of rotary spherical digester sealing device relates to boiling vessel and rotatory sealing technology.
Rotary spherical digester is a kind of widely different rotatable batch cooking equipment, and cooking liquor and raw material in the rotary spherical digester are prepared by a certain percentage, do not allow dielectric leakage in the cooking reaction process, in order to avoid influence product quality and contaminated environment; Simultaneously, rotary spherical digester is in operation, and its spindle nose allows the axial of certain value, radially reaches the angle displacement amount, and the sealing device between rotary spherical digester spindle nose and the medium transport pipeline not only will guarantee sealing effectiveness, and does not allow to limit above-mentioned displacement; Especially medium discharges end, and its loading area is about about 2-3 times of medium input, thereby it is bigger to discharge the seal request and the difficulty of holding, and its sealing property is also big to boiling production and the influence of rotary spherical digester operating condition.
For a long time, rotary spherical digester diaxon head end is continued to use with rotary spherical digester always and is sealed with the full voltage type of pressing operation synchronously, generally adopts screw thread packing packing box seal, and encapsulant is generally asbestos packing.Under high temperature and the effect of deep-etching soup, the stuffing box aging speed is fast, and the replacement cycle is short, is generally about a week; The adjusting of the nut of packing simultaneously is not only complicated, and the also difficult grasp of elasticity, and nut is regulated pine, and then dielectric leakage is serious, influence cooking quality, tight then limit the free displacement of spindle nose, the wearing and tearing of the member that drives up, increase the weight of motor load, influence the operation of rotary spherical digester ordinary production.
In recent years, the Sealing Technology of the end of axle of rotary spherical digester is updated, some factory adopts spring compression polytetrafluoroethylene (PTFE) vapour head, sealing property and potted component make moderate progress service life, but sealing device still is with synchronously with rotary spherical digester and is pressed operation, the centering performance and the compensation performance of the spindle nose Influence of Displacement vapour head of rotary spherical digester, and the potted component cost is higher, dielectric leakage does not solve at all, and the factor that influences the rotary spherical digester operation is not eliminated at all yet.The swivel joint that the Shandong county produces adopts mechanical seal and metal hose interconnection technique, and sealing effectiveness is better, but price is higher, leaks difficulty of post processing, and also only is useful on the report of rotary spherical digester admission end at present.
The design is intended to guarantee to allow under the displacement prerequisite of rotary spherical digester spindle nose, solves the widely different commentaries on classics sealing of rotary spherical digester spindle nose, prolongs the service life of potted component, reduces the accuracy of manufacture and cost, is easy to installation and maintenance, makes things convenient for the replacing of potted component.
The technical scheme that realizes above-mentioned task is to change the structure that the former spindle nose of rotary spherical digester discharges the release spindle nose → seal nipple → by-pass valve control of end into rotary spherical digester to discharge spindle nose → by-pass valve control → seal nipple.The doll head end adopts dual flexible soft seal, discharges end and does not make up flexible soft seal for there being the operation type of pressure.
The design's concrete structure is described in detail in detail below in conjunction with accompanying drawing.
Rotary spherical digester discharges shaft headend seal
According to rotary sealing appts fluid seepage amount formula: Q=(π △ PC
3Do)/(12WL) as can be known, leakage rate Q is directly proportional with pressure differential deltap P. shaft diameter d.Existing containment member all is with synchronously with rotary spherical digester and is pressed widely different commentaries on classics in whole cooking reaction process, and pressure differential deltap P is the poor of boiling maximum pressure and normal pressure, uses packing box seal at rotary spherical digester doll head end; Teflon seal and swivel joint still can be produced, but because the medium delivery line of rotary spherical digester release spindle nose is generally 1-2 times of doll head medium input pipe diameter, as using above-mentioned Sealing Technology then to be difficult to reach production requirement at the release spindle nose.
The principal character that the design's rotary spherical digester medium discharges shaft headend seal is to change synchronous full voltage type with pressure to be sealed into no pressure type operation type sealing, being about to by-pass valve control---float ball valve (18) release spindle nose (2a) direct and rotary spherical digester joins, closed chamber and by-pass valve control are flexible fit form, potted component does not contact pressure source in the cooking reaction process like this, pressurized when medium discharges only, extension along with release time, pressure medium descends rapidly, Δ P value is significantly smaller than the full voltage type sealing, thereby uses general Sealing Technology can reach production requirement.
By Fig. 1, Fig. 2 as can be known, by-pass valve control in the sealing device of rotary spherical digester release spindle nose end is float ball valve (18), its arrival end directly is connected with release spindle nose (2a), the auxiliary valve body of ball valve is replaced by flange (17a) and sealed joint pipe (16a), be connected for permanent rigidity between flange (17a) and the sealed joint pipe (16a), and it is orthogonal, by sealing cup (10), sealing ring (4a), (14a), between closed chamber that sealed liner (15a) and housing (7a) form and the sealed joint pipe (16a) for flexibly connecting, sealing ring (14a) is an interference fit with tube connector (16a), the overall diameter interference 2-3mm of the general comparable tube connector of the diameter of bore of sealing ring (14a) (16a), all adopt matched in clearance between sealing ring (4a) and the tube connector (16a) and between the inwall of the lip of sealing cup (10) and housing (7a), its gap width is about about 0.8～0.9 times of thermal expansion value of material therefor, the matched in clearance value of sealed liner (15a) and tube connector (16a) is that rotary spherical digester discharges spindle nose radially or about 1.2 times of angle maximum displacement, the surface roughness of above-mentioned cooperation place contact-making surface all should reach about Ra0.8～0.4, and the exit end face of sealed joint pipe (16a) should be more than or equal to the axial length of sealing cup (10) lip outer face.The transit joint of forming by tapering pipe (3a) and transition conduit (9), the one end joins by closed chamber and sealed joint pipe (16a), the other end is connected with releasing network, in the pipeline that connects, can adopt pipeline telescopic compensator (figure four), this is with reference to the structural design of closed chamber, in view of compensator belongs to the static seal scope, so cancelled sealing cup, promptly by sealed joint pipe (16c) and sealed liner (15c), sealing ring (4c), the closed chamber of (14c) forming two is partly formed, gap between the diameter of bore of liner plate (15c) and sealed joint pipe (16c) overall diameter can suitably reduce, and the axial distance of tube connector exit end face and potted component should be equal to or greater than the tube connector diameter.
Because the design's by-pass valve control directly links to each other with the rotary spherical digester spindle nose, therefore, change the boss face sealing of valve inlet end flanges into the seam location, the flat seal type of attachment, realize being located by connecting of valve body and rotary spherical digester spindle nose endoporus, the valve body of paying of ball valve is cancelled, and is replaced by flange and sealed joint pipe, the weight and the length of floating ball valve have all been reduced about 30%, alleviated the manufacturing cost of the plus load and the control valve of rotary spherical digester.And guaranteed sealed joint pipe and discharged axiality requirement between the spindle nose.The front and back seal receptacle of existing ball valve mostly is same material and makes, and same required precision, the feature that does not have reaction source according to releasing network, valve seat (18c) can be gone up directly processing at valve body (18a) before the design's the ball valve, also available metal materials processing also can be adopted and the processing of rear valve base (18d) identical materials.Its main effect is to lead ball-handling shape closure member (18b), reduces the pressure differential of valve body access road and spherical closure body passage, reduces and opens the valve moment of torsion.Rear valve base is consistent with existing valve seat requirement, discharges to guarantee the valve of opening smoothly under the boiling total head.For making floating ball valve to the boiling total head, good sealing property be arranged all, must enlarge its float value, even the amount of floating of valve rod in the ellipse deep-slotted chip breaker of metal ball shaped valve body reduces at normal pressure.This valve should carry out dynamic and static balance correction after assembling, do not influence the rotary spherical digester balance condition when guaranteeing control valve with the synchronous widely different commentaries on classics of rotary spherical digester spindle nose; For reducing active force and the minimizing operation moment of torsion of working media to the back seal receptacle, " undergauge " technology can be adopted in the fluid passage of this valve, being that spheroid duct sectional area ratio pipeline inner hole section is long-pending dwindles about 0.6～0.7 times, and the resistance that increases after making tapering that spheroid passage two ends are 20～25 ° of angles with the compensation undergauge, thereby guarantee sealing.For preventing that operate miss from causing the loss of heat energy and slurry, can take on valve rod, to install the time control protective device; The special-purpose wrench (3) of this valve should separate with valve body when the non-opening of valve, does not allow the running of band plate hand.By-pass valve control among the design both had been used for the sealing that medium discharges the spindle nose end, and the medium that is used for again after boiling finishes discharges the supporting of leading control and potted component.
The sealing and connecting device that closed chamber and transit joint are formed all is in the cooking reaction process does not have the operating condition of pressure, therefore can adopt lower technical indicator.Sealing and connecting device among the design has adopted dual combination sealing technology and fluidics.Form the sealing of first road by sealing cup (10) and seal receptacle (11), sealed liner and sealing ring constitute the sealing of second road, form a buffering area between the two seals, buffering area not only alleviates the pressure of sealed liner and sealing ring, also give counter-pressure of sealing cup, make its pressurized balance, after medium sprays from the sealed joint pipe exit, quicken through the tapering pipe, enter releasing network by transition conduit.When sealed joint pipe sprays, produce a pressure backward at medium, sealing cup is oppressed backward, itself and seal receptacle (11) are adjacent to, form the sealing of first road, sealing still has leakage as first road, and medium is hindered by the sealing of second road again.Guaranteed sealing effectiveness.
Sealing ring (4a), (14a) all adopt high temperature resistant, corrosion-resistant, wear-resistant, and has certain flexible flexible material, sealing ring (14a) can be designed to inside and outside two layers, skin adopts deformation quantity little heat resistant type, corrosion resistance glue, moulds goods, internal layer adopt the bigger high temperature-resistant acid-resistant alkali of thermal expansion value glue, mould goods, sealed liner can adopt the A3 material to make.
By the handwheel structure that handwheel flange (5) movable tubes (12) and handwheel (13) are formed, screw in the internal thread of housing, can turn in fixing housing.When adopting the handwheel structure, sealing ring and sealed liner are fixed on the handwheel flange, can rotate with handwheel, so that sealing ring and sealed liner can be moved axially along sealed joint pipe, thereby prevent because the concentrated wear that potted component is only caused in the fixed position friction of sealed joint pipe produces and leaks; The handwheel structure also is convenient to being connected and installed of sealing and connecting device and by-pass valve control, releasing network, guarantees the axiality requirement of mounting process.In boiling production run process, handwheel must be fixing with shell flange (6a).
Rotary spherical digester doll head end sealing device
Rotary spherical digester doll head end sealing device is according to the structural design that discharges end sealing device, as can be seen from Figure 3, it is by by-pass valve control (21), sealed joint pipe (16b) and closed chamber are formed, closed chamber is made of sealed liner (15b), sealing ring (4b), (14b) peaceful flange (6b), housing (7b), the beeline of sealed joint pipe (16b) exit end face and sealing ring (4b) should be equal to or greater than the sealed joint pipe diameter, and it with release end sealing device difference is:
1, by-pass valve control is common stop valve;
2, cancelled sealing cup in the closed chamber, the plane face flange end face at the housing two ends all is provided with double-deck layer soft sealing structure;
3, the media outlet end of the sealed joint pipe of this device (16b) can directly insert the positioning pipe (20) that is arranged in rotary spherical digester spindle nose (2b) endoporus, also can design a transit joint again, is imported in the rotary spherical digester (1) by positioning pipe (20) after buffering again.
In sum, the design is the industry that papermaking, weaving, chemical industry, light industry etc. use widely different rotatable batch cooking equipment, in the sealing property that improves the end of axle of rotary spherical digester sealing device, eliminate dielectric leakage and guarantee the normal practical technique of moving of rotary spherical digester, it also can reduce the accuracy of manufacture and the cost of sealing device simultaneously, increasing the service life, is comparatively ideal the end of axle of rotary spherical digester sealing device.
Using such as figure one, two, three, four described the end of axle of rotary spherical digester sealing devices and pipeline compensator and the patent No. is that 87204056 " recycling of waste steam cooking equipment " is supporting, after Nan County Paper Mill, Hunan Prov. goes into operation, normal operation, in whole cooking reaction course and in the medium dispose procedure, medium does not leak, potted component has reached more than 8 months service life, is also continuing use.
Use the said equipment to make the slurry total head and spurt test, prove that sealing effectiveness is good, meets production requirement.
Description of drawings
Fig. 1, rotary spherical digester discharges the shaft headend seal structure chart;
Fig. 2, rotary spherical digester discharge spindle nose end control valve structure chart;
Fig. 3, rotary spherical digester doll head end sealing device structure chart;
Fig. 4, pipeline telescopic compensator structure chart.
1, rotary spherical digester; 2a, release spindle nose;
2b, doll head; 3, wrench;
4, sealing ring; Wherein: 4a, release sealing ring;
4b, admission sealing ring; 4c, compensation sealing circle;
5, handwheel flange; 6a, release plane face flange;
6b, admission plane face flange; 6c, compensation plane face flange;
7, housing; Wherein: 7a, release housing;
7b, admission housing; 7c, compensation housing;
8a, release Taper Pipe; 8b, compensation Taper Pipe;
9, transition conduit; 10, sealing cup;
11, seal receptacle; 12, movable tubes;
13, handwheel flange; 14, sealing ring; Wherein:
14a, release sealing ring; 14b, admission sealing ring;
14c, compensation sealing circle; 15a, release sealed liner;
15b, admission sealed liner; 15c, compensation sealing liner plate;
16, sealed joint pipe; Wherein: 16a, release sealed joint pipe;
16b, admission sealed joint pipe; 16c, compensation sealing tube connector;
17a, release sealing flange; 17b, admission sealing flange;
18, floating ball valve; 18a, valve body;
18b, closure member; 18c, preceding valve seat;
18d, rear valve base; 19a, steam steam inlet pipe;
19b, Outer Tube; 20, positioning pipe;
21, stop valve.
Claims (9)
1, a kind of the end of axle of rotary spherical digester sealing device, be divided into the doll head end sealing device and discharge shaft headend seal two parts, primary structure comprises by-pass valve control, the potted component of installing on seal nipple and the joint thereof, the design is characterised in that the by-pass valve control that discharges in the shaft headend seal is float ball valve (18), its arrival end directly is connected with release spindle nose (2 α), the auxiliary valve body of ball valve is replaced by flange (17 α) and sealed joint pipe (16 α), be connected for permanent rigidity between flange (17 α) and the sealed joint pipe (16 α), and it is orthogonal, by sealing cup (10), sealing ring (4 α), (14 α), between closed chamber that sealed liner (15 α) and housing (7 α) are formed and the sealed joint pipe (16 α) for flexibly connecting, tapering pipe (8 α) and transition conduit (9) are formed transit joint, the one end joins by closed chamber and sealed joint pipe (16 α), the other end is connected with releasing network, closed chamber in the doll head end sealing device is by sealed liner (15b), sealing ring (4b), (14b) peaceful flange (6b) constitutes, and sealed joint pipe (16b) media outlet end can directly insert the positioning pipe (20) that is arranged in rotary spherical digester spindle nose (2b) endoporus.
2, according to the described the end of axle of rotary spherical digester sealing device of claim 1, it is characterized in that adopting the seam location between ball valve (18) arrival end flange and the rotary spherical digester spindle nose (2a), the flat seal form connects.
3,, it is characterized in that the preceding valve seat (18c) of ball valve can be gone up directly processing from valve body (18a) according to the described the end of axle of rotary spherical digester sealing device of claim 1.
4, according to the described the end of axle of rotary spherical digester sealing device of claim 1, it is characterized in that sealing ring (14) and sealed joint pipe (16) adopt interference fit, all adopt matched in clearance between sealing ring (4) and the sealed joint pipe (16) and between sealed liner (15) and the sealed joint pipe (16) and between the inwall of the lip of sealing cup (10) and housing (7).
5,, it is characterized in that the exit end face of release end sealed joint pipe (16a) should be more than or equal to the axial length of sealing cup (10) lip outer face according to claim 1 or 4 described the end of axle of rotary spherical digester sealing devices.
6, according to the described the end of axle of rotary spherical digester sealing device of claim 1, it is characterized in that on the release end closed chamber housing (7a) made sealing ring (4a), (14a) and a sealed liner (15a) of being made up of handwheel flange (5) movable tubes (12) and handwheel (13) can be installed makes axially movable handwheel structure along sealed joint pipe (16a), the admission end closed chamber also can be installed similar handwheel structure.
7, according to the described the end of axle of rotary spherical digester sealing device of claim 1, it is characterized in that discharging in end transit joint and the pipeline that releasing network is connected the pipeline telescopic compensator that can adopt the closed chamber that forms by sealed joint pipe (16c) and sealed liner (15c), sealing ring (4c), (14c) to form.
8,, it is characterized in that the beeline of admission end sealed joint pipe (16b) exit end face and sealing ring (4b) should be equal to or greater than the sealed joint pipe diameter according to the described the end of axle of rotary spherical digester sealing device of claim 1.
9, according to the described the end of axle of rotary spherical digester sealing device of claim 1, it is characterized in that sealing ring (14) can be designed as inside and outside two layers, skin can adopt deformation quantity little, the glue of heat-resisting, corrosion resistant type, mould goods, and internal layer can adopt the thermal expansion value bigger, heat-resisting, corrosion resistant glue, moulds goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88218057 CN2036963U (en) | 1988-06-20 | 1988-06-20 | Sealing device at end of axle head of rotary spherical digester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88218057 CN2036963U (en) | 1988-06-20 | 1988-06-20 | Sealing device at end of axle head of rotary spherical digester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2036963U true CN2036963U (en) | 1989-05-03 |
Family
ID=4850521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88218057 Expired - Lifetime CN2036963U (en) | 1988-06-20 | 1988-06-20 | Sealing device at end of axle head of rotary spherical digester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2036963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982660A (en) * | 2014-05-22 | 2014-08-13 | 沈阳化工大学 | Sealing mechanism applicable to unrestraint condition |
| CN104769339A (en) * | 2012-10-16 | 2015-07-08 | 舍弗勒技术有限两合公司 | Seal arrangement for a control valve |
-
1988
- 1988-06-20 CN CN 88218057 patent/CN2036963U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769339A (en) * | 2012-10-16 | 2015-07-08 | 舍弗勒技术有限两合公司 | Seal arrangement for a control valve |
| CN103982660A (en) * | 2014-05-22 | 2014-08-13 | 沈阳化工大学 | Sealing mechanism applicable to unrestraint condition |
| CN103982660B (en) * | 2014-05-22 | 2015-12-30 | 沈阳化工大学 | A kind of for without the sealing mechanism under restraint state |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |