CN206144785U - Rotor pump shaft -seal device - Google Patents

Abstract

The utility model provides a shaft sealing mechanism of impeller pump includes that a machine seat (3) and quiet ring (4), rotating seat (5) reach by its driven rotating ring (6), and the gap department between quiet ring (4) and the machine seat (3) sets up O shape and encloses (8), the barrel of rotating seat (5) stretches into the machine and seals seat (3) inner chamber, rotating seat (5) and machine seal between the seat (3) vacuole formation (28), a plurality of through -holes (10) are seted up to barrel periphery along rotating seat (5), the inboard setting of pump of rotating ring (6) is used for the 2nd O shape circle (11) in the break joint crack of seal moving ring (6) and axle (1), in rotating seat inner chamber (9), set up between the link of rotating seat (5) and rotating ring (6) compression spring (12), rotating ring (6) are hugged closely with quiet ring (4) each other, impeller (2) is connected through at least 1 trundle (13) in rotating seat (5), the wherein one end close -fitting of trundle (13) is connected, the other end is floating to be inserted, the utility model discloses the axle sealing performance and the life of impeller pump can be effectually promoted, the shaft seal of non - sanitary -grade impeller pump especially is fit for.

Description

Rotor pump shaft sealing device

Technical field

This utility model is related to a kind of shaft sealer of impeller pump, especially a kind of mechanical type of non-hygiene level impeller pump Shaft sealer.

Background technology

Impeller pump also known as colloid pump, sickle pump, general-purpose delivery pump etc., due to its impeller shape such as cam, also referred to as lobe pump, Impeller pump belongs to displacement pump；Generally birotor.Impeller pump be by means of working chamber in multiple fixed volumes conveying unit Periodically it is converted and reaches the purpose of conveyance fluid material.Generally by a pair of synchromesh gears of Motor drive, transmission major-minor axle, double turns Son synchronizes opposite direction rotation respectively under the drive of major-minor axle, and the volume for making pump changes, higher true so as to constitute Reciprocal of duty cycle and discharge pressure；Entrance is low-pressure area, and exit is higher-pressure region.Impeller pump is mainly used in sanitation-grade material and corrosion Property, the conveying of high-viscosity material.Conveyed material can be divided into sanitation-grade material and non-hygiene level material, sanitation-grade by hygienic requirements Material includes：Food beverages, fruit concentrated solution, cosmetics, medicine class etc.；Non-hygiene level material is referred to except sanitation-grade material Fluid foods in addition, the predominantly industrial products such as chemical industry papermaking and semi-finished product fluid foods, including dyestuff, fat, solvent, tree Fat and polymer, paper pulp etc... all spare and accessory parts contacted with conveying material in impeller pump, generally individually adopt and meet sanitary standard Stainless steel material make, its sealing member adopt nontoxic rubber；Reliable rust-preventing characteristic and non-toxic seal guarantee safety and sanitation.

Because material is subjected to elevated pressures in pump output terminal during rotor pump work, material is easy to be let out from the between centers for rotating Leakage.In order to avoid fluid foods leakage, the sealing of impeller pump is extremely important, with the development of impeller pump technology, impeller pump Sealing is always one of its key technology；The sealing performance of impeller pump and the service life of sealing are lifted, is this area The target of technical staff's long-sought.The sealing of impeller pump at present mainly includes mechanical type sealing and material filling type sealing, Based on mechanical type sealing.The mechanical type sealing of impeller pump is that the rotating ring and geo-stationary transported with axle is forced using spring Stationary ring end face be mutually close to form the rotation pair of sealing, use seal with O ring at the gap of periphery.Due to moving during rotor pump work Ring and stationary ring friction, including the machine sealing of rotating ring and stationary ring and O-ring is all subjected to heating abrasion, causes its hydraulic performance decline, directly To occurring being accomplished by maintenance downtime when fluid foods are substantially leaked.In prior art, also there is the fluid conveyed using it Material carrys out the scheme of lubrication machine sealing, and its machine sealing is being axially fixed, such as Chinese patent literature CN201401323Y is the utility model open file of this utility model patent applicant application, due to passing in and out sky that machine sealing is located Between fluid foods there are elevated pressures, have larger extruding force to machine sealing, once and excessive accumulation do not circulate, Jiu Huichi Temperature of continuing rising, reduces cooling effect of the fluid foods to machine sealing, affects the sealing performance of impeller pump and the use longevity of sealing Life.

In fact, the pressure for passing in and out the fluid foods that machine sealing place space is in contact with it is change, inventor After years of research and found that, its machine sealing of prior art is being axially fixed design, the exactly change of convection cell material pressure Suitable counter-measure is not taken in change, just causes the countershaft sealing property of fluid foods compression shock of change and making for sealing Large effect is caused with the life-span；So, the use of the countershaft sealing property of fluid foods compression shock and sealing how is overcome The considerable influence that life-span causes

This utility model is precisely in order to solve above-mentioned technical problem.This utility model can be regarded as Chinese patent literature The improvement of the scheme disclosed in CN201401323Y.

The content of the invention

Technical problem to be solved in the utility model is for the above-mentioned state of the art, there is provided a kind of sealing of impeller pump Device.

This utility model solve the technical scheme that adopted of above-mentioned technical problem for：

A kind of shaft sealer of impeller pump, the axle (1) of the impeller pump is fixedly connected with the impeller (2) as rotor, Characterized in that, the shaft sealer includes that machine seals seat (3) and stationary ring (4), rotating seat (5) and the rotating ring (6) being driven by it, It is cylindrical and be sleeved on axle (1) outside, machine envelope seat (3) be sleeved on rotating seat (5) outward and be fixedly connected with the pump housing (7), machine The pump outside of envelope seat (3) is the less blind end of internal diameter, and stationary ring (4) seals the inner chamber of seat (3) at blind end, directly positioned at machine Axle (1) outside is sleeved on, and is connected with machine envelope seat (3), the first O-ring is set at the gap between stationary ring (4) and machine envelope seat (3) (8)；The pump inner side of rotating seat (5) is the less connection end of internal diameter, and the connection end of rotating seat (5) is directly sleeved on axle (1) outside, The cylinder of rotating seat (5) stretches into machine envelope seat (3) inner chamber, and cavity (28), rotating seat are formed between rotating seat (5) and machine envelope seat (3) (5) rotating seat inner chamber (9) is formed between cylinder and axle (1), along the cylinder periphery of rotating seat (5) multiple through holes (10) is opened up, The rotating ring (6) is positioned at the pump outside of rotating seat (5) and is directly sleeved on axle (1) outside, and the pump inner side of rotating ring (6) is provided for Second O-ring (11) in gap between moving sealing ring (6) and axle (1), in rotating seat inner chamber (9), in the connection end of rotating seat (5) Compression spring (12) is set between rotating ring (6), and the compression spring (12) is also sleeved on axle (1) outside, the outer face of rotating ring (6) (23) mutually it is close to stationary ring (4) inner face (24), the rotating seat (5) Jing at least one trundles (13) connection impeller (2), Wherein one end close-fitting connection of the trundle (13), the floating type insertion of the other end.

Same cylindrical spring cushion block (14) is set up in the pump inner side of the rotating ring (6), and the compression spring (12) sets Put between the connection end of rotating seat (5) and spring cushion block (14), the spring cushion block (14) is also directly sleeved on axle (1) outward Face, second O-ring (11) is arranged at the gap between spring cushion block (14) and the rotating ring (6).

On impeller (2), the pump inner side of the rotating seat (5) opens up respective numbers to one end close-fitting of the trundle (13) The first breach (15) for the floating type insertion of trundle (13).

Pump outside on the impeller (2) symmetrically opens up 2 pin-and-holes (16), wherein one end difference of 2 trundles (13) Close-fitting inserts 2 pin-and-holes (16) on the impeller (2), and the pump inner side of the rotating seat (5) also symmetrically opens up 2 the first breach (15) for the floating type insertion of trundle (13).

The pump outside of the cylinder of the rotating seat (5) is along its inwall circumference at least provided with 2 convex tendons (17), the rotating ring (6) corresponding depression (18) is set along its outer wall circumference.

The pump outside of the cylinder of the rotating seat (5) arranges 4 convex tendons (17) along its inwall circumference uniform distribution, the rotating ring (6) 4 corresponding depressions (18) are also each set along it along its outer wall circumference uniform distribution with spring cushion block (14).

It is 4 along the through hole (10) that the cylinder periphery of the rotating seat opens up, and outside the cylinder for moving the rotating seat (5) Zhou Junbu.

The cylinder inboard wall of the rotating seat (5) is provided for engaging the bulge loop (29) of spring cushion block (14).

Machine envelope seat (3) opens up pin-and-hole (16) near its pump outside, and the pin-and-hole (16) is at least 2, along described The cylinder circumference uniform distribution of machine envelope seat (3), each pin-and-hole (16) inserts steady pin (19) in close-fitting mode；Outside the pump of the stationary ring (4) Side opens up the second breach (21), is inserted with mode with pine for steady pin (19).

The blind end of machine envelope seat (3) also sets up outside framework oil seal (20), and the inner ring of the outside framework oil seal (20) is close to described The axle (1) of impeller pump, and it is passed through lubricating oil or cooling water in its region for being sealed.

A kind of impeller pump for conveying non-hygiene level high viscosity fluid material, including the pump housing (7), as interactive rotor 2 impellers (2) are in the pump housing (7), and the impeller (2) that parallel two piece axle (1) of synchronized case output are each corresponding is solid Fixed connection, it is characterised in that every axle (1) also includes shaft sealer as above.

This utility model impeller pump is cooled down and lubricated using material to machine sealing, and the material into machine sealing chamber is with rotor The height nip of pump does not stop conversion, and material ceaselessly passes in and out in machine sealing chamber, above-mentioned machine sealing is played good cooling and Lubrication, so as to be conducive to extending the service life of above-mentioned machine sealing.Sealing is also therewith in synchronization when material pressure rises Rise, it is ensured that sealing when material pressure rises.When material pressure declines, above-mentioned machine sealing automatically resets again, is rested and reorganized； Dynamic equilibrium can be thus reached, can be efficiently against the countershaft sealing property of fluid foods compression shock and the use of sealing The considerable influence that life-span causes；Also material can be effectively prevented from and excessively piles up persistently overheating, the impact rotor for not circulating and causing The phenomenon of the sealing performance of pump and the service life of sealing.This utility model can effectively lift the sealing of impeller pump Can, and significantly lift the service life of rotor shaft seal.This utility model is especially suitable for conveying non-hygiene level material Impeller pump sealing.

Description of the drawings

Fig. 1 is the shaft sealer cross-sectional view of the impeller pump of this utility model embodiment one；

Fig. 2, Fig. 3 are machine envelope seat schematic perspective view, show different azimuth；

Fig. 4, Fig. 5 are rotating seat schematic perspective view, show different azimuth；

Fig. 6, Fig. 7 are rotating ring schematic perspective view, show different azimuth；

Fig. 8, Fig. 9 are stationary ring schematic perspective view, show different azimuth；

Figure 10, Figure 11 are spring cushion block schematic perspective view, show different azimuth；

Figure 12 is the shaft sealer part section structural representation of the impeller pump of this utility model embodiment two；

Figure 13 is the shaft sealer entirety cross-sectional view of the impeller pump of this utility model embodiment two；

The two blade impeller schematic front view that Figure 14 is adapted to by this utility model；

The two blade impeller generalized section that Figure 15 is adapted to by this utility model；

By the shaft sealer cross-sectional view of material pressure state when Figure 16 is this utility model rotor pump work.

Specific embodiment

Below describing specific embodiment of the present utility model shown in Fig. 1 to Figure 15 in detail.Describe for convenience, will be each Machine sealing is referred to as pump inner side towards the side in impeller pump, and the side towards outside impeller pump is referred to as pump outside.

This utility model shaft sealer is primarily adapted for use in for the impeller pump of conveying high-viscosity fluid material, generally this Impeller pump includes the pump housing 7, is located in the pump housing 7 as 2 impellers 2 of interactive rotor, the parallel two piece axle 1 of synchronized case output Each corresponding impeller 2 is fixedly connected；Impeller 2 is usually twayblade or three blades, also there is single blade, quaterfoil, five leaves Piece.This utility model shaft sealer is particularly suitable for conveying the impeller pump of non-hygiene level high viscosity fluid material.

Embodiment one

As shown in figure 1, a kind of shaft sealer of impeller pump, the axle 1 of impeller pump and the fixation of impeller 2 company as rotor Connect, shaft sealer includes that machine seals seat 3 and stationary ring 4, rotating seat 5 and the rotating ring 6 being driven by it, it is cylindrical and be sleeved on axle 1 outside, machine envelope seat 3 is sleeved on outside rotating seat 5 and is fixedly connected with the pump housing 7, and between machine envelope seat 3 and rotating seat 5 cavity 28 is formed, The pump inner side of machine envelope seat 3 is the flange end of the connection pump housing 7, and along flange end circumference multiple connecting holes 22 are opened up, for solid with the pump housing 7 Fixed connection；The pump outside of machine envelope seat 3 is the less blind end of internal diameter, and it is at blind end and straight that stationary ring 4 is located at the machine envelope inner chamber of seat 3 Female connector is mounted in the outside of axle 1, and is connected with machine envelope seat 3, can specifically adopt following connected mode：Machine seals seat 3 near its pump outside Pin-and-hole 16 is opened up, pin-and-hole 16 is at least 2, and along machine the cylinder circumference uniform distribution of seat 3 is sealed；Usually, the cylinder along machine envelope seat 3 is symmetrical It is sufficient that opening up 2, certainly, the cylinder circumference uniform distribution for sealing seat 3 along machine opens up 3,4 can also；Each pin-and-hole 16 is with close-fitting Mode inserts steady pin 19；Can also screwed hole replace pin-and-hole 16, curl up band screw replace steady pin 19；Stationary ring 4 Pump outside open up corresponding second breach 21, as shown in Figure 8, Figure 9, inserted with mode with pine for each steady pin 19.Stationary ring 4 with The first O-ring 8 is set at gap between machine envelope seat 3.As shown in Figure 2 and Figure 3, rotating seat 5 is as shown in Figure 4, Figure 5 for machine envelope seat 3.

As shown in figure 1, the pump inner side of rotating seat 5 is the less connection end of internal diameter, the connection end of rotating seat 5 is directly sleeved on The outside of axle 1, the cylinder of rotating seat 5 stretches into the machine envelope inner chamber of seat 3, and between rotating seat 5 and machine envelope seat 3 cavity 28 is formed, rotating seat 5 Rotating seat inner chamber 9 is formed between cylinder and axle 1, the cylinder periphery along rotating seat 5 opens up multiple through holes 10, for fluid foods turnover Rotating seat inner chamber 9；Through hole 10 is uniformly preferred with opening up 4 along the cylinder periphery of the dynamic rotating seat 5.Rotating ring 6 is located at rotating ring The pump outside of seat 5 is simultaneously directly sleeved on the outside of axle 1, and the pump inner side of rotating ring 6 is provided for gap between moving sealing ring 6 and axle 1 Second O-ring 11, in rotating seat inner chamber 9, arranges compression spring 12, the pressurized bullet between the connection end of rotating seat 5 and rotating ring 6 Spring 12 is also sleeved on the outside of axle 1, and the outer face 23 of rotating ring 6 is mutually close to the inner face 24 of stationary ring 4, is formed and rotates secondary.

5 Jing at least one trundle of rotating seat 13 connects impeller 2, and wherein one end close-fitting connection of trundle 13, the other end is floated Dynamic formula is inserted.For ease of manufacture, can be in the following ways：One end close-fitting of trundle 13 on impeller 2, in the pump of rotating seat 5 Side opens up the first breach 15 of respective numbers for the floating type insertion of trundle 13.With adopt be arranged symmetrically 2 trundles 13 for It is good：Pump outside on impeller 2 symmetrically opens up 2 pin-and-holes 16, as shown in Figure 14, Figure 15；2 trundles 13 being arranged symmetrically its 2 pin-and-holes 16 on middle one end difference close-fitting insertion impeller 2, the pump inner side of rotating seat 5 also symmetrically opens up 2 the first breach 15 and supplies The floating type insertion of trundle 13, as shown in Figure 5.

The pump inner side of rotating ring 6 can set up same cylindrical spring cushion block 14, and compression spring 12 is arranged on rotating seat 5 Between connection end and spring cushion block 14, spring cushion block 14 is also directly sleeved on the outside of axle 1, and the second O-ring 11 is arranged on spring pad At gap between block 14 and rotating ring 6.Compression spring of the present utility model 12 is the single spring for being directly sleeved on the outside of axle 1, Traditional helical spring or wavy spring can be adopted, it is desirable to which the both ends of the surface of compression spring 12 are smooth, make the outer face 23 of rotating ring 6 with it is quiet The uniform force of 4 inner face of ring 24 is distributed；So to be preferred using the smooth wavy spring of end face；Such as adopt traditional spiral bullet Spring, can scabble its both ends of the surface.If directly pushing rotating ring 6 with compression spring 12, the stress balance of rotating ring 6 is poor；Set up Spring cushion block 14 can effectively improve the stress balance of rotating ring 6, it also avoid pressing spring 12 and directly withstand on rotating ring 6 to rotating ring 6 abrasions for causing, can also shorten the length of compression spring 12.

Rotating seat 5 can be in the following way with the drive connection of rotating ring 6：The pump outside of the cylinder of rotating seat 5 is along its inwall Circumference arranges corresponding depression 18 at least provided with 2 convex tendons 17, rotating ring 6 along its outer wall circumference.Specifically being in the following ways It is good：The pump outside of the cylinder of rotating seat 5 arranges 4 convex tendons 17 along its inwall circumference uniform distribution, as shown in Figure 5；Rotating ring 6 and spring pad Block 14 also each arranges 4 corresponding depressions 18 along it along its outer wall circumference uniform distribution, as shown in Fig. 6, Fig. 7 and Figure 10, Figure 11.

First compression spring 12 loaded into rotating seat 5 when the associated components of rotating seat 5 are assembled, then by the depression 18 of spring cushion block 14 Spring cushion block 14 is pressed into rotating seat 5, and rotating spring cushion block 14 by the convex tendon 17 along rotating seat 5, and compression spring 12 is locked In rotating seat 5, after convex tendon 17 by the depression 18 of rotating ring 6 along rotating seat 5 rotating ring 6 is pressed into into rotating seat 5, and rotating ring 6 Outer face 23 is exposed at the outside of rotating seat 5.If not adding spring cushion block 14, directly by the depression 18 of rotating ring 6 along rotating ring Rotating ring 6 is pressed into rotating seat 5 by the convex tendon 17 of seat 5.Second O-ring 11 should be mounted in advance on rotating ring 6.

The end face that machine envelope seat 3 is used to be connected with the pump housing 7 can arrange a circle boss 25 and a circle groove 26, as shown in Fig. 2 recessed Groove 26 is embedded in the 3rd O-ring 27.When machine envelope seat 3 associated components are assembled, the loading machine of stationary ring 4 envelope of the first O-ring 8 is first will be equipped with Seat 3, the pin-and-hole 16 for making the alignment machine of the second breach 21 on stationary ring 4 seal on seat 3 by force inserts steady pin 19 on machine envelope seat 3 The second breach 21 on stationary ring 4 is inserted with mode with pine in pin-and-hole 16, the front end of steady pin 19；Due to steady pin 19 and stationary ring 4 it Between retain certain gap, so, stationary ring 4 automatically adjusts its position in the way of micro movement when can make rotor pump work.Always Body assemble when, first the associated components of rotating seat 5 are mounted in pump housing machine sealing chamber, after by machine envelope seat 3 be fixedly connected with the pump housing 7, make The outer face 23 of ring 6 is mutually close to the inner face 24 of stationary ring 4, and the first O-ring 8 is pressurized under the effect of compression spring 12 to form initial Deformation.During dress impeller 2, the first breach 15 on the other end insertion rotating seat 5 with the trundle 13 of its close-fitting is made.

As shown in figure 1, during rotor pump work, machine envelope seat 3, steady pin 19, stationary ring 4, the first O-ring 8 are static not with the pump housing 7 Dynamic, impeller 2, trundle 13, rotating seat 5, rotating ring 6, the second O-ring 11, compression spring 12 and spring cushion block 14 are rotated with axle, are moved The outer face 23 of ring 6 is mutually close to the inner face 24 of stationary ring 4, is formed and rotates secondary.Due to the cylinder of the Jing rotating seats 5 of rotating seat inner chamber 9 Multiple through holes 10 in external week are communicated with cavity 28, and cavity 28 is communicated with the inner chamber of impeller pump, the portion of impeller pump inner chamber Point material will enter cavity 28 and rotating seat inner chamber 9, to including stationary ring 4, the first O-ring 8, rotating ring 6, the second O-ring 11, receive The machine sealing of pressing spring 12 and spring cushion block 14 plays cooling and lubrication；Also, due to rotating seat 5, rotating ring 6, the 2nd O shapes Circle 11, compression spring 12 and spring cushion block 14 is rotated with axle, into cavity 28 especially into rotating seat inner chamber 9 material with turning The height nip of sub- pump does not stop conversion, and material is ceaselessly passed in and out in cavity 28 with rotating seat inner chamber 9, and above-mentioned machine sealing is risen To good cooling and lubrication, so as to be conducive to extending the service life of above-mentioned machine sealing.Rotating ring 6 is same with compression spring 12 In material area, this model machine front cover is easily sealed；The pressure of material is identical with the elastic force direction of compression spring 12, be all force it is dynamic Ring 6 is compressed with stationary ring 4, while forcing the second O-ring 11 and the first O-ring 8 compacted.Because trundle 13 is floating type insertion First breach 15 of rotating seat 5, when the material pressure into cavity 28 and rotating seat inner chamber 9 rises, forces compression spring 12 Be further compressed, the outer side shifting of pump vertically of rotating seat 5, at the same force the second O-ring 11 and the first O-ring 8 further by Compress, the thrust between rotating ring 6 and stationary ring 4 is increased；Due to the second breach 21 of steady pin 19 and stationary ring 4 leave it is certain between Gap, also forces the micro movement on the outside of pump vertically of stationary ring 4, and the first O-ring 8 is further compacted, as shown in figure 16；That is material pressure Sealing is also synchronous therewith when power rises rises, it is ensured that sealing when material pressure rises.It is above-mentioned when material pressure declines Machine sealing automatically resets again, is rested and reorganized, and can thus reach dynamic equilibrium, can be efficiently against fluid foods compression shock The considerable influence that countershaft sealing property is caused with the service life of sealing.Also material can be effectively prevented from, and excessively accumulation is not circulated And persistently overheating, the phenomenon of the sealing performance of impact impeller pump and the service life of sealing for causing.This utility model can The sealing performance of impeller pump is effectively lifted, and significantly lifts the service life of rotor shaft seal.

In addition, in order to prevent from causing when material pressure is excessive rotating seat 5, vertically pump outside is mobile excessive and cause rotating ring First breach 15 of seat 5 departs from trundle 13, can be provided for engaging the bulge loop of spring cushion block 14 in the cylinder inboard wall of rotating seat 5 29, as shown in figure 16；In this case, through hole 10 can be opened at the connection end of ring seat 5, and bulge loop 29 may be provided at through hole 10 pump outside, to avoid through hole 10 from being opened on bulge loop 29, certainly, even through hole 10 is opened on bulge loop 29；Thus can be with The first breach 15 for ensureing rotating seat 5 floats without deviating from trundle 13 all the time along trundle 13.

Embodiment two

As shown in Figure 12 and Figure 13, on the basis of embodiment one, the blind end for sealing seat 3 in machine also sets up bone to the present embodiment Frame oil sealing 20, other are identical with embodiment.The inner ring of the outside framework oil seal 20 is close to the axle 1 of impeller pump, and is sealed at it Region be passed through lubricating oil or cooling water, form the cooling and lubricating system for increasing.So, when in pump without material, can be effective Machine envelope dry grinding is prevented, the service life of rotor shaft seal is further lifted.In addition, can be in the place section of outside framework oil seal 20 of axle 1 Axle sleeve is added, to avoid axle 1 from being worn by the lip of outside framework oil seal 20.

Claims (11)

1. a kind of shaft sealer of impeller pump, the axle (1) of the impeller pump is fixedly connected with the impeller (2) as rotor, its It is characterised by, the shaft sealer includes that machine seals seat (3) and stationary ring (4), rotating seat (5) and the rotating ring (6) being driven by it, It is cylindrical and be sleeved on axle (1) outside, machine envelope seat (3) be sleeved on rotating seat (5) outward and be fixedly connected with the pump housing (7), machine envelope The pump outside of seat (3) is the less blind end of internal diameter, and stationary ring (4) seals the inner chamber of seat (3) at blind end, directly covers positioned at machine Axle (1) outside is mounted in, and is connected with machine envelope seat (3), the first O-ring is set at the gap between stationary ring (4) and machine envelope seat (3) (8)；The pump inner side of rotating seat (5) is the less connection end of internal diameter, and the connection end of rotating seat (5) is directly sleeved on axle (1) outside, The cylinder of rotating seat (5) stretches into machine envelope seat (3) inner chamber, and cavity (28), rotating seat are formed between rotating seat (5) and machine envelope seat (3) (5) rotating seat inner chamber (9) is formed between cylinder and axle (1), along the cylinder periphery of rotating seat (5) multiple through holes (10) is opened up, The rotating ring (6) is positioned at the pump outside of rotating seat (5) and is directly sleeved on axle (1) outside, and the pump inner side of rotating ring (6) is provided for Second O-ring (11) in gap between moving sealing ring (6) and axle (1), in rotating seat inner chamber (9), in the connection end of rotating seat (5) Compression spring (12) is set between rotating ring (6), and the compression spring (12) is also sleeved on axle (1) outside, the outer face of rotating ring (6) (23) mutually it is close to stationary ring (4) inner face (24), the rotating seat (5) Jing at least one trundles (13) connection impeller (2), Wherein one end close-fitting connection of the trundle (13), the floating type insertion of the other end.

2. shaft sealer as claimed in claim 1, it is characterised in that the pump inner side of the rotating ring (6) sets up same in circle The spring cushion block (14) of tubular, the compression spring (12) is arranged between the connection end of rotating seat (5) and spring cushion block (14), The spring cushion block (14) is also directly sleeved on axle (1) outside, and second O-ring (11) is arranged on spring cushion block (14) and institute State at the gap between rotating ring (6).

3. shaft sealer as claimed in claim 1, it is characterised in that one end close-fitting of the trundle (13) is in impeller (2) on, the pump inner side of the rotating seat (5) opens up first breach (15) of respective numbers for the floating type insertion of trundle (13).

4. shaft sealer as claimed in claim 3, it is characterised in that the pump outside on the impeller (2) symmetrically opens up 2 Pin-and-hole (16), wherein one end difference close-fitting of 2 trundles (13) inserts 2 pin-and-holes (16) on the impeller (2), described dynamic The pump inner side of ring seat (5) also symmetrically opens up 2 the first breach (15) for the floating type insertion of trundle (13).

5. shaft sealer as claimed in claim 1, it is characterised in that the pump outside of the cylinder of the rotating seat (5) is along it Inwall circumference arranges corresponding depression (18) at least provided with 2 convex tendons (17), the rotating ring (6) along its outer wall circumference.

6. shaft sealer as claimed in claim 5, it is characterised in that the pump outside of the cylinder of the rotating seat (5) arranges 4 Individual convex tendon (17) also each arranges 4 corresponding depressions along its inwall circumference uniform distribution, the rotating ring (6) with spring cushion block (14) (18) along it along its outer wall circumference uniform distribution.

7. shaft sealer as claimed in claim 1, it is characterised in that along the through hole that the cylinder periphery of the rotating seat opens up (10) it is 4, and it is uniform along the cylinder periphery for moving the rotating seat (5).

8. shaft sealer as claimed in claim 2, it is characterised in that the cylinder inboard wall of the rotating seat (5) is provided for The bulge loop (29) of locking spring cushion block (14).

9. shaft sealer as claimed in claim 1, it is characterised in that machine envelope seat (3) opens up near its pump outside Pin-and-hole (16), the pin-and-hole (16) is at least 2, and along the machine cylinder circumference uniform distribution of seat (3) is sealed, and each pin-and-hole (16) is with close-fitting Mode inserts steady pin (19)；The pump outside of the stationary ring (4) opens up the second breach (21), and mode is matched somebody with somebody with pine for steady pin (19) Insertion.

10. shaft sealer as claimed in claim 1, it is characterised in that the blind end of machine envelope seat (3) also sets up skeleton Oil sealing (20), the inner ring of the outside framework oil seal (20) is close to the axle (1) of the impeller pump, and is passed through lubrication in its region for being sealed Oil or cooling water.

A kind of 11. impeller pumps for conveying non-hygiene level high viscosity fluid material, including the pump housing (7), as the 2 of interactive rotor Individual impeller (2) is in the pump housing (7), and the impeller (2) that parallel two piece axle (1) of synchronized case output are each corresponding is fixed Connection, it is characterised in that every axle (1) also includes the shaft sealer as described in claim 1 to 10.