CN207004804U - Impeller pump and its shaft sealer - Google Patents

Abstract

A kind of shaft sealer of impeller pump is provided, including machine envelope seat (3) and stationary ring (4), rotating seat (5) and the rotating ring (6) being driven by it, the first O-ring (8) is set at the gap between stationary ring (4) and machine envelope seat (3)；Cavity (28) is formed between rotating seat (5) and machine envelope seat (3), rotating seat (5) is made up of rotating ring front stall (25) and rotating ring back seat (26), rotating ring front stall (25) sets the outer ring (30) protruded in opposite directions and inner ring (31) with rotating ring back seat (26), enclose and form rotating seat inner chamber (9), mutual male-female engagement between respective inner ring (31), second O-ring (11) is set on the inside of the pump of rotating ring (6), compression spring (12) is set in rotating seat inner chamber (9), rotating ring (6) is mutually close to stationary ring (4), rotating seat (5) connects impeller (2) through at least one trundle (13), wherein one end close-fitting connection of trundle (13), the floating type insertion of the other end；The utility model can effectively lift the sealing performance and service life of impeller pump.

Description

Impeller pump and its shaft sealer

Technical field

A kind of impeller pump is the utility model is related to, especially its shaft sealer.

Background technology

Impeller pump is also known as colloid pump, vane pump, general-purpose delivery pump etc., because its impeller is shaped like cam, also referred to as lobe pump, Impeller pump belongs to displacement pump；Generally birotor.Impeller pump is to convey unit by means of multiple fixed volumes in working chamber Periodically it is converted and reaches the purpose of trandfer fluid material.Generally by motor drive a pair of synchromesh gears, be driven major-minor axle, double turns Son synchronizes opposite direction rotation, the volume of pump is changed respectively under the drive of major-minor axle, higher true so as to form 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.

Material is subjected to elevated pressures in pump output terminal during due to rotor pump work, and material is easy to let out from the between centers of rotation Leakage.In order to avoid fluid foods leak, the sealing of impeller pump is extremely important, the development of adjoint 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 sealing and material filling type sealing, Based on mechanical sealing.The mechanical sealing of impeller pump is that the rotating ring and geo-stationary transported with axle are forced using spring Stationary ring end face be mutually close to the revolute pair to form sealing, use seal with O ring at the gap on periphery.Due to being moved during rotor pump work Ring and stationary ring friction, including the machine sealing of rotating ring and stationary ring and O-ring are all subjected to heating abrasion, cause its hydraulic performance decline, directly To occurring just needing maintenance downtime when fluid foods substantially leak.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 the utility model patent applicant application, due to empty where disengaging machine sealing Between fluid foods there are elevated pressures, have larger extruding force to machine sealing, and once excessive accumulation is not circulated, Jiu Huichi Temperature of continuing rising, cooling effect of the fluid foods to machine sealing is reduced, influence the sealing performance of impeller pump and the use longevity of sealing Life.

In fact, the pressure for the fluid foods that space where disengaging machine sealing is in contact with it is change, inventor It after years of research and found that, its machine sealing of prior art is being axially the change of fixed design, exactly convection body material pressure Suitable counter-measure is not taken in change, just causes the fluid foods compression shock of change sealing performance and sealing are made Large effect is caused with the life-span；So, fluid foods compression shock how is overcome to sealing performance and the use of sealing Considerable influence caused by life-spanOn the other hand, inventor proposes sets compression spring in prior art, rotating seat On the basis of, the scheme floated and sold is set between rotating seat and impeller of rotor so that machine sealing can float vertically, with stream The change of body material pressure so that sealing is also synchronous therewith when material pressure rises rises, it is ensured that when material pressure rises Sealing；When material pressure declines, above-mentioned machine sealing automatically resets again, is rested and reorganized；Dynamic equilibrium can thus be reached, Can efficiently against fluid foods compression shock to caused by sealing performance and the service life of sealing considerable influence；Also may be used Be effectively prevented from material excessively accumulation do not circulate and caused by it is persistently overheating, influence sealing performance and the sealing of impeller pump The phenomenon of service life.On the other hand, applicant proposes CN201610917398.4 patent applications, denomination of invention in 2016.10.21 For " rotor pump shaft sealing device ", this patent application is through announcing, publication No. CN106286291A.

Although the relatively conventional rotor pump shaft sealing device of scheme that No. 201610917398.4 patent application is proposed There is larger technological progress, but inventor has found, when the impeller pump using the program is used for high viscosity for a long time During the conveying of material, the material of especially easy peeling caking, caking materials heap still can occur at rotating seat, compression spring Product phenomenon, so as to influence the elasticity of compression spring, and then influence the sealing performance of impeller pump and the service life of sealing.

The utility model is precisely in order to solve above-mentioned technical problem.The utility model can be regarded as Chinese patent literature The further improvement of scheme disclosed in CN106286291A.

The content of the invention

Technical problem to be solved in the utility model is to be directed to the above-mentioned state of the art, there is provided a kind of impeller pump, especially The scheme of its shaft sealer.

Technical scheme is used by the utility model solves above-mentioned technical problem：

A kind of shaft sealer of impeller pump, the axle (1) of the impeller pump are fixedly connected with the impeller (2) as rotor, The shaft sealer includes machine envelope seat (3) and stationary ring (4), rotating seat (5) and the rotating ring (6) being driven by it, cylindrical And be sleeved on outside axle (1), machine envelope seat (3) is sleeved on rotating seat (5) outside and is fixedly connected with the pump housing (7), and machine envelope seat (3) includes Allow the material section that material enters and the seal section for not allowing material to enter, the internal diameter of material section is more than the internal diameter of seal section；It is quiet Ring (4) is located at the seal section inner chamber of machine envelope seat (3) at material section, is directly sleeved on outside axle (1), and seals seat (3) with machine Connection, stationary ring (4) and machine, which seal, sets the first O-ring (8) at the gap between seat (3)；Rotating seat (5) is directly sleeved on axle (1) Outside, rotating seat (5) stretch into the material section inner chamber of machine envelope seat (3), formed between material section and machine the envelope seat (3) of rotating seat (5) Cavity (28), it is characterised in that the rotating seat (5) is the assembling assembled by rotating ring front stall (25) and rotating ring back seat (26) Part, the rotating ring front stall (25) and rotating ring back seat (26) set the outer ring (30) protruded in opposite directions and inner ring (31), before the rotating ring Mutual male-female engagement between the seat inner ring (31) of (25) and the inner ring (31) of rotating ring back seat (26), and directly it is sleeved on axle (1) outside, the inner ring (31) of the rotating ring front stall (25), the inner ring (31) of outer ring (30) and rotating ring back seat (26), outer ring (30) Enclose and form rotating seat inner chamber (9), outer ring of the rotating seat inner chamber (9) through the rotating ring front stall (25) Yu rotating ring back seat (26) (30) opening (10) formed between is communicated with the cavity (28), and compression spring (12) is set in rotating seat inner chamber (9), should Compression spring (12) is also sleeved on outside axle (1)；The rotating ring (6) is located on the outside of the pump of rotating ring back seat (26), the rotating ring (6) Lateral wall and rotating ring back seat (26) outer ring (30) inwall between mutual male-female engagement, the rotating ring (6) also directly be set with Outside axle (1), second O-ring (11) in gap between moving sealing ring (6) and axle (1) is provided on the inside of the pump of rotating ring (6), The outer face (23) of rotating ring (6) is mutually close to stationary ring (4) inner face (24), and the rotating ring front stall (25) is driven through at least one Sell (13) connection impeller (2), wherein one end close-fitting connection of the trundle (13), the floating type insertion of the other end.

It is further scheme individually below.

The inner ring (31) of the rotating ring front stall (25) sets the circular arc convex sheet that direction stretching is stretched out by its inner ring (31) (32), the circular arc convex sheet (32) is 2, is arranged symmetrically along its inner ring (31) circumference；Accordingly, the rotating ring back seat (26) Inner ring (31) open up arc gap (33), the arc gap (33) is 2, is also arranged symmetrically along its inner ring (31) circumference.

The section of the rotating ring back seat (26) is in " work " font, and second O-ring (11) is arranged on rotating ring back seat (26) At gap between the rotating ring (6).

One end close-fitting of the trundle (13) opens up corresponding on impeller (2) on the inside of the pump of the rotating ring front stall (25) The first breach (15) of quantity supplies trundle (13) floating type insertion.

It is symmetrical on the outside of pump on the impeller (2) to open up 2 pin-and-holes (16), wherein one end difference of 2 trundles (13) 2 pin-and-holes (16) that close-fitting is inserted on the impeller (2), the pump inner side of the rotating ring front stall (25) also symmetrically open up 2 first Breach (15) supplies trundle (13) floating type insertion.

The outer ring (30) of the rotating ring back seat (26) is along its inwall circumference at least provided with 2 convex tendons (17), the rotating ring (6) Along its lateral wall circumference, corresponding depression (18) is set.

Outer ring (30) inwall of the rotating ring back seat (26) sets 4 convex tendons (17) along its inwall circumference uniform distribution, described dynamic 4 corresponding depressions (18) are set on the outside of ring (6), along its outer wall circumference uniform distribution.

Described machine envelope seat (3) seal section opens up pin-and-hole (16), and the pin-and-hole (16) is at least 2, and seat (3) is sealed along the machine Cylinder circumference uniform distribution, each pin-and-hole (16) inserts steady pin (19) in a manner of close-fitting；Second is opened up on the outside of the pump of the stationary ring (4) Breach (21), inserted for steady pin (19) by pine with a manner of.

The blind end of the machine envelope seat (3) sets flexible sealing to combine the unit, and the flexible sealing combination unit includes four Fluorine circle or graphite annulus (34), are combined with packing or outside framework oil seal (35).

The axle (1) is set with axle sleeve (36) at the blind end of machine envelope seat (3), and the flexible sealing combination unit is sleeved on Outside axle sleeve (36), axle sleeve (36) is fixedly mounted on axle (1) outer surface through finger screw (37), the envelope of the machine envelope seat (3) The outside of closed end sets pressing plate (38), and the pressing plate (38) is fixedly mounted on the blind end of the machine envelope seat (3) through bolt (39) Outside, the 3rd O-ring (40) is set between the axle sleeve (36) and axle (1).

The machine envelope seat (3) is an entirety, sets flange end on the inside of the pump of machine envelope seat (3), is opened up along flange end circumference Multiple connecting holes (22), through multiple bolts (39) with being fixedly connected on the outside of the pump housing (7)；The flange end of the machine envelope seat (3) is opened If annular groove (41), embedded 4th O-ring (42) in the annular groove (41).

It is that machine seals front stall (43) and machine and is honored as a queen seat (44) by the machine envelope seat (3) material section and seal section split settings, institute It is to seal front stall (43) and machine by machine to be honored as a queen the component that seat (44) assembles to state machine envelope seat (3), on the inside of the pump of machine envelope front stall (43) Flange end is set, opens up multiple connecting holes (22) along flange end circumference, the inner chamber of the pump housing (7) opens up flange installation cavity, machine The flange end for sealing front stall (43) is embedded in the flange installation cavity, and machine is sealed into seat (3) from the inner chamber of the pump housing (7) through multiple bolts (39) It is fixedly connected with the pump housing (7)；The 4th O-ring (42) is set between the flange end and the pump housing (7) of the machine envelope front stall (43).

On the outside of the pump of the machine envelope front stall (43) multiple screwed holes (46) are opened up along its wall thickness circumference；The machine is honored as a queen seat (44) flange end is also provided with the inside of pump, multiple connecting holes (22) are opened up along its flange end circumference, through multiple bolts (39) by institute Machine envelope front stall (43) is stated to be fixedly connected with machine seat (44) of being honored as a queen；Machine envelope front stall (43) and machine, which are honored as a queen between seat (44), sets the Five O-rings (45).

A kind of impeller pump, including the pump housing (7), 2 impellers (2) as interactive rotor are located in the pump housing (7), synchronized case The respective corresponding impeller (2) of the parallel two piece axle (1) of output is fixedly connected, it is characterised in that every axle (1) also includes Above-described shaft sealer.

The utility model impeller pump is cooled down and lubricated to machine sealing using material, into machine sealing chamber material with rotor The height nip of pump does not stop to convert, and material is ceaselessly passed in and out in machine sealing chamber, above-mentioned machine sealing is played good cooling and Lubrication, so as to be advantageous to extend 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 thus be reached, can be efficiently against fluid foods compression shock to sealing performance and the use of sealing Considerable influence caused by life-span；Also can be effectively prevented from material excessively accumulation do not circulate and caused by it is persistently overheating, influence rotor The phenomenon of the sealing performance of pump and the service life of sealing.The relatively conventional impeller pump of the utility model, especially easily The material of peeling caking, the sealing performance of impeller pump can be effectively lifted, and significantly lift the use of rotor shaft seal Life-span.Moreover, the rotor that the utility model is relatively conventional with respect to the scheme that No. 201610917398.4 patent application is proposed Pump shaft sealing device, the utility model instead of multiple in former scheme with the circular opening formed between the outer ring of rotating ring back seat Through hole, rotating seat inner chamber 9 is formed between the inner ring and outer ring of rotating ring front stall and rotating ring back seat so that material passes in and out in inner chamber 9 It is more unobstructed, significantly reduce material and packing phenomenon occurs at the compression spring of inner chamber, the elasticity of compression spring can be kept for a long time Well.So as to keep the sealing performance of impeller pump for a long time, the service life of sealing is increased substantially.Including compression spring The installation of chamber 9 is changed also more convenient.The material section of machine envelope seat is set with seal section split in addition, the utility model additionally provides It is set to machine envelope front stall and machine to be honored as a queen the prioritization scheme of seat, machine sealing is installed from pump body, is not just had to during changing machine sealing The inlet and outlet pipeline of pump is dismantled, is very easy to the maintenance work of impeller pump user.

Brief description of the drawings

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

Fig. 2 is the local A enlarged diagrams in Fig. 1.

Fig. 3, Fig. 4 are the machine envelope seat schematic perspective view of the utility model embodiment one, show different azimuth；

Fig. 5, Fig. 6 are the utility model rotating ring schematic perspective view, show different azimuth respectively；

Fig. 7, Fig. 8 are the utility model stationary ring schematic perspective view, show different azimuth respectively；

Fig. 9, Figure 10 are the utility model rotating ring front stall schematic perspective view, show different azimuth respectively；

Figure 11, Figure 12 are the utility model rotating ring back seat schematic perspective view, show different azimuth respectively；

Figure 13, Figure 14 are the utility model axle sleeve schematic perspective view, show different azimuth respectively；

Figure 15 is the overall shaft sealer cross-sectional view of the impeller pump of the utility model embodiment one；

Figure 16 is the overall shaft sealer cross-sectional view of the impeller pump of the utility model embodiment two；

Figure 17, Figure 18 are that the machine of the utility model embodiment two seals front stall schematic perspective view, show different azimuth respectively；

Figure 19, Figure 20 are that the machine of the utility model embodiment two is honored as a queen a schematic perspective view, show different azimuth respectively；

The two blade impeller schematic front view that Figure 21 is adapted to by the utility model；

The two blade impeller diagrammatic cross-section that Figure 22 is adapted to by the utility model；

Figure 23 is the local B enlarged diagrams in Figure 16.

Embodiment

Below to describe specific embodiment of the present utility model shown in Fig. 1 to Figure 20 in detail., will be each in order to facilitate description Machine sealing is referred to as on the inside of pump towards the side in impeller pump, towards impeller pump outside side be referred to as on the outside of pump.

The utility model shaft sealer is primarily adapted for use in impeller pump, and usual this impeller pump includes the pump housing 7, as interaction 2 impellers 2 of rotor are located in the pump housing 7, and the respective corresponding impeller 2 of parallel two piece axle 1 of synchronized case output is fixed Connection；Impeller 2 is usually twayblade or three blades, also there is single blade, quaterfoil, five blades.The utility model sealing fills Put the impeller pump for the fluid mechanics material for being particularly suitable for transfer of highly viscous material or easy peeling caking.

Embodiment one

As shown in figure 1, a kind of shaft sealer of impeller pump, the axle 1 of the impeller pump is fixed with the impeller 2 as rotor Connection, the shaft sealer include machine envelope seat 3 and stationary ring 4, rotating seat 5 and the rotating ring 6 being driven by it, cylindrical and cover Mounted in the outside of axle 1；Machine envelope seat 3 is sleeved on outside rotating seat 5 and is fixedly connected with the pump housing 7, and machine envelope seat 3 includes allowing what material entered Material section and the seal section for not allowing material to enter, the internal diameter of material section are more than the internal diameter of seal section.Stationary ring 4 is located at machine envelope seat 3 Seal section inner chamber at material section, be directly sleeved on the outside of axle 1, and be connected with machine envelope seat 3.Following connection can specifically be used Mode：Machine seals seat 3 and opens up pin-and-hole 16 close to its pump outside, and pin-and-hole 16 is at least 2, and the cylinder circumference uniform distribution of seat 3 is sealed along machine； Usually, it is sufficient to symmetrically open up 2 along the cylinder of machine envelope seat 3, certainly, the cylinder circumference uniform distribution that seat 3 is sealed along machine opens up 3 It is individual, 4 can also.Each pin-and-hole 16 inserts steady pin 19 in a manner of close-fitting；Can also screwed hole replace pin-and-hole 16, curled up sealing The screw of band replaces steady pin 19.Corresponding second breach 21 is opened up on the outside of the pump of stationary ring 4, as shown in Figure 7, Figure 8, for each fixation Pin 19 is inserted by pine with a manner of.The first O-ring 8 is set at gap between stationary ring 4 and machine envelope seat 3.

As shown in figure 1, rotating seat 5 is directly sleeved on the outside of axle 1, rotating seat 5 stretches into the material section inner chamber of machine envelope seat 3, moved Cavity 28 is formed between material section and machine the envelope seat 3 of ring seat 5.Rotating seat 5 be assembled by rotating ring front stall 25 and rotating ring back seat 26 and Into assembly；As shown in Fig. 9 to Figure 12, rotating ring front stall 25 sets the outer ring 30 protruded in opposite directions and inner ring with rotating ring back seat 26 31.As shown in Fig. 2 mutual male-female engagement between the inner ring 31 of rotating ring front stall 25 and the inner ring 31 of rotating ring back seat 26, and it is straight Female connector mounted in the outside of axle 1, enclose and formed by the inner ring 31 of rotating ring front stall 25, the inner ring 31 of outer ring 30 and rotating ring back seat 26, outer ring 30 Rotating seat inner chamber 9, opening 10 of the rotating seat inner chamber 9 through being formed between rotating ring front stall 25 and the outer ring 30 of rotating ring back seat 26 and sky Chamber 28 is communicated, and compression spring 12 is set in rotating seat inner chamber 9, and the compression spring 12 is also sleeved on the outside of axle 1.Rotating ring 6 is located at On the outside of the pump of rotating ring back seat 26, mutual male-female engagement between the lateral wall of rotating ring 6 and the inwall of the outer ring 30 of rotating ring back seat 26, move Ring 6 is also directly sleeved on the outside of axle 1, and second O-ring in gap between moving sealing ring 6 and axle 1 is provided on the inside of the pump of rotating ring 6 11, the outer face 23 of rotating ring 6 is mutually close to the inner face 24 of stationary ring 4, forms revolute pair.

Rotating ring front stall 25 connects impeller 2 through at least one trundle 13, and wherein one end close-fitting connection of trundle 13 is another Hold floating type insertion., can be in the following ways for ease of manufacture：One end close-fitting of trundle 13 is on impeller 2, rotating ring front stall 25 Pump on the inside of open up respective numbers the first breach 15 supply 13 floating type insertion of trundle.With using 2 transmissions being arranged symmetrically Pin 13 is preferred：2 pin-and-holes 16 symmetrically are opened up on the outside of pump on impeller 2, as shown in Figure 21, Figure 22；2 trundles being arranged symmetrically 2 pin-and-holes 16 on 13 wherein one end difference close-fitting insertion impeller 2,2 the are also symmetrically opened up on the inside of the pump of rotating ring front stall 25 One breach 15 supplies 13 floating type insertion of trundle, as shown in Figure 9.

As shown in Figure 10, Figure 11, mutual male-female engagement mode is between rotating ring front stall 25 and the inner ring 31 of rotating ring back seat 26： The inner ring 31 of rotating ring front stall 25 sets the circular arc convex sheet 32 that direction stretching is stretched out by its inner ring 31, and circular arc convex sheet 32 is 2, It is arranged symmetrically along its circumference of inner ring 31；Accordingly, the inner ring 31 of rotating ring back seat 26 opens up arc gap 33, and arc gap 33 is 2 It is individual, also it is arranged symmetrically along its circumference of inner ring 31.As shown in Fig. 2 the section of rotating ring back seat 26 is in " work " font, the second O-ring 11 It is arranged at the gap between rotating ring back seat 26 and the rotating ring 6.

As shown in Fig. 2 the drive connection of rotating ring back seat 26 and rotating ring 6, that is, male-female engagement therebetween, it can use Following manner：The outer ring 30 of rotating ring back seat 26 is along its inwall circumference at least provided with 2 convex tendons 17, and rotating ring 6 is along its lateral wall circumference Corresponding depression 18 is set.Specifically to be preferred in the following ways：The inwall of outer ring 30 of rotating ring back seat 26 sets 4 edges of convex tendon 17 Its inwall circumference uniform distribution, as shown in figure 12；The outside of rotating ring 6 sets 4 corresponding depressions 18, along its outer wall circumference uniform distribution, such as schemes 5th, shown in Fig. 6.

As shown in Fig. 2 compression spring 12 is first placed in rotating ring front stall 25 and rotating ring back seat by the associated components of rotating seat 5 when assembling Between 26, then rotating ring 6 is pressed into rotating ring back seat 26 by convex tendon 17 of the depression 18 of rotating ring 6 along rotating ring back seat 26, and rotating ring 6 Outer face 23 is exposed at the outside of rotating seat 5.The second O-ring 11 is embedded between rotating ring back seat 26 and rotating ring 6 afterwards.

As shown in Figure 3, Figure 4, machine envelope seat 3 is an entirety, sets flange end on the inside of the pump of machine envelope seat 3, justifies along flange end The multiple connecting holes 22 of Zhou Kaishe, are fixedly connected through multiple bolts 39 with the outside of the pump housing 7, machine envelope the flange end of seat 3 pump on the inside of with The pump housing 7 is bonded；The flange end of machine envelope seat 3 opens up annular groove 41, embedded 4th O-ring 42 in annular groove 41.

As shown in Fig. 2 the blind end of machine envelope seat 3 sets flexible sealing to combine the unit, flexible sealing combination unit includes four Fluorine circle or graphite annulus 34, are combined with packing or outside framework oil seal 35.The utility model is with reference to each of mechanical seal and packing seal The combined mechanically-sealing apparatus developed from advantage, can be really achieved zero leakage；Mechanical seal is above undertaking pressure, plays The advantages of its sealing surface is pressure-resistant, wear-resisting, when mechanical seal has a small amount of leakage, by below flexible ring seal, allow material with it is soft Property ring seals together；Third layer sealed packing or the main function of outside framework oil seal 35 are isolation air, do not allow material and air in pump Contact and harden material, while be also the three seals to material, especially the material to easy peeling caking.

As shown in Fig. 2 axle 1 is set with axle sleeve 36 at the blind end of machine envelope seat 3, flexible sealing combination unit is sleeved on axle sleeve 36 outsides, axle sleeve 36 are fixedly mounted on the outer surface of axle 1 through finger screw 37, and the outside of the blind end of machine envelope seat 3 sets pressing plate 38, the pressing plate 38 is fixedly mounted on the outside of the blind end of machine envelope seat 3 through bolt 39, and the 3rd O shapes are set between axle sleeve 36 and axle 1 Circle 40.Axle sleeve 36 is as shown in Figure 13, Figure 14.

During machine envelope seat 3 associated components assembling, the stationary ring 4 equipped with the first O-ring 8 is first loaded into machine envelope seat 3, made on stationary ring 4 The second breach 21 alignment machine envelope seat 3 on pin-and-hole 16, steady pin 19 insert by force machine seal seat 3 on pin-and-hole 16, steady pin The second breach 21 on stationary ring 4 is inserted in 19 front end in a manner of pine is matched somebody with somebody；Between retaining necessarily between steady pin 19 and stationary ring 4 Gap, so, stationary ring 4 during rotor pump work can be made to automatically adjust its position in a manner of micro movement., first will be dynamic during overall assembling The associated components of ring seat 5 in the pump housing machine sealing chamber, after machine envelope seat 3 is fixedly connected with the pump housing 7, make rotating ring 6 outer face 23 and The inner face 24 of stationary ring 4 is mutually close to, and the first O-ring 8 is pressurized under the effect of compression spring 12 and forms initial deformation.When filling impeller 2, Make and the first breach 15 on the other end of the trundle of its close-fitting 13 insertion rotating seat 5.

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 rotate with axle, move The outer face 23 of ring 6 is mutually close to the inner face 24 of stationary ring 4, forms revolute pair.Due to rotating seat inner chamber 9 through rotating ring front stall 25 with The opening 10 formed between the outer ring 30 of rotating ring back seat 26 communicates with cavity 28, and cavity 28 is to communicate with the inner chamber of impeller pump , the partial material of impeller pump inner chamber will enter cavity 28 and rotating seat inner chamber 9, to including stationary ring 4, the first O-ring 8, dynamic Ring 6, the second O-ring 11, the machine sealing of compression spring 12 play cooling and lubrication；Also, due to rotating seat 5, rotating ring 6, Second O-ring 11, compression spring 12 rotate with axle, into cavity 28 especially into rotating seat inner chamber 9 material with impeller pump Height nip do not stop to convert, material is ceaselessly passed in and out in cavity 28 and rotating seat inner chamber 9, above-mentioned machine sealing is played good Good cooling and lubrication, so as to be advantageous to extend the service life of above-mentioned machine sealing.Rotating ring 6 is with compression spring 12 with thing Expect area, this model machine front cover is easier to seal；The pressure of material is identical with the elastic force direction of compression spring 12, is all to force rotating ring 6 Compressed with stationary ring 4, while force the second O-ring 11 and the first O-ring 8 to be compacted.Because trundle 13 is that floating type insertion is dynamic First breach 15 of ring seat 5, when entering cavity 28 and the material pressure of rotating seat inner chamber 9 rises, force the quilt of compression spring 12 Further compression, rotating seat 5 is mobile on the outside of pump vertically, while forces the second O-ring 11 and the first O-ring 8 further to be pressed Tightly, the thrust between rotating ring 6 and stationary ring 4 increases；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；It is close when i.e. material pressure rises Envelope property is also synchronous therewith to be risen, it is ensured that sealing when material pressure rises.When material pressure declines, above-mentioned machine sealing again from It is dynamic to reset, rested and reorganized, can thus reach dynamic equilibrium, can be efficiently against fluid foods compression shock to sealing Can be with considerable influence caused by the service life of sealing；The material of especially easy peeling caking, can be effectively prevented from material Excessive accumulation do not circulate and caused by it is persistently overheating, influence showing for the sealing performance of impeller pump and the service life of sealing As.The utility model can effectively lift the sealing performance of impeller pump, and significantly lift the use longevity of rotor shaft seal Life.

In addition, design, the size of compression spring 12 of the size of rotating seat inner chamber 9 that rotating ring front stall 25 is formed with rotating ring back seat , it should ensure that the first breach 15 of rotating seat 5 floats without departing from trundle 13 along trundle 13 all the time.

Figure 15 is the overall shaft sealer cross-sectional view of the impeller pump of the utility model embodiment one.This rotor Pump, including the pump housing 7,2 impellers 2 as interactive rotor are located in the pump housing 7, and the parallel two piece axle 1 of synchronized case output is each It is fixedly connected from corresponding impeller 2, every axle 1 is provided with above-described shaft sealer.

Embodiment two

As shown in Figure 16, Figure 23, the present embodiment seals machine the material section and seal section of seat 3 on the basis of embodiment one Split settings are that machine seals front stall 43 and machine and is honored as a queen seat 44, and machine, which seals seat 3 and seals front stall 43 and machine seat 44 of being honored as a queen by machine, to be assembled Component, the pump inner side of machine envelope front stall 43 set flange end, open up multiple connecting holes 22 along flange end circumference, the inner chamber of the pump housing 7 is opened Try blue installation cavity, the flange end insertion flange installation cavity of machine envelope front stall 43, seal machine from the inner chamber of the pump housing 7 through multiple bolts 39 Seat 3 is fixedly connected with the pump housing 7, and the 4th O-ring 42 is set between the flange end and the pump housing 7 of machine envelope front stall 43；Figure 23 is in Figure 16 Local B enlarged diagrams, Figure 16 can be referred to.It is different from embodiment one, it is pump outside and the pump housing 7 of the machine envelope flange end of seat 3 Fitting.On the outside of the pump of machine envelope front stall 43 multiple screwed holes 46 are opened up along its wall thickness circumference；Machine be honored as a queen seat 44 pump on the inside of be also provided with Flange end, multiple connecting holes 22 are opened up along its flange end circumference, machine is sealed into front stall 43 and machine seat 44 of being honored as a queen through multiple bolts 39 and consolidated Fixed connection；Machine, which seals front stall 43 and machine, is honored as a queen between seat 44 and sets the 5th O-ring 45.4th O-ring 42 is also embedded in the machine envelope method of seat 3 On the outside of Lan Duan pump.Machine, which seals front stall 43 and machine, is honored as a queen between seat 44 and also sets up the 5th O-ring 45.Other embodiments one continued to use Scheme.

Figure 16 is the overall shaft sealer cross-sectional view of the impeller pump of the utility model embodiment two.This rotor Pump, including the pump housing 7,2 impellers 2 as interactive rotor are located in the pump housing 7, and the parallel two piece axle 1 of synchronized case output is each It is fixedly connected from corresponding impeller 2, every axle 1 is provided with above-described shaft sealer.The machine envelope of the present embodiment Part is installed from pump body, and the inlet and outlet pipeline of dismounting pump is not just had to during changing machine sealing, is the maintenance of impeller pump user Maintenance is brought conveniently.

Claims (14)

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, institute State shaft sealer include machine envelope seat (3) with stationary ring (4), rotating seat (5) and the rotating ring (6) being driven by it, it is cylindrical simultaneously It is sleeved on outside axle (1), machine envelope seat (3) is sleeved on rotating seat (5) outside and is fixedly connected with the pump housing (7), and machine envelope seat (3) includes permitting Perhaps for the material section that material enters with not allowing the seal section that material enters, the internal diameter of material section is more than the internal diameter of seal section；Stationary ring (4) positioned at the seal section inner chamber of machine envelope seat (3) at material section, directly it is sleeved on outside axle (1), and with machine envelope seat (3) even Connect, the first O-ring (8) is set at the gap between stationary ring (4) and machine envelope seat (3)；Rotating seat (5) is directly sleeved on axle (1) outside Face, rotating seat (5) stretch into the material section inner chamber of machine envelope seat (3), formed between material section and machine the envelope seat (3) of rotating seat (5) empty Chamber (28), it is characterised in that the rotating seat (5) is the assembling assembled by rotating ring front stall (25) and rotating ring back seat (26) Part, the rotating ring front stall (25) and rotating ring back seat (26) set the outer ring (30) protruded in opposite directions and inner ring (31), before the rotating ring Mutual male-female engagement between the seat inner ring (31) of (25) and the inner ring (31) of rotating ring back seat (26), and directly it is sleeved on axle (1) outside, the inner ring (31) of the rotating ring front stall (25), the inner ring (31) of outer ring (30) and rotating ring back seat (26), outer ring (30) Enclose and form rotating seat inner chamber (9), outer ring of the rotating seat inner chamber (9) through the rotating ring front stall (25) Yu rotating ring back seat (26) (30) opening (10) formed between is communicated with the cavity (28), and compression spring (12) is set in rotating seat inner chamber (9), should Compression spring (12) is also sleeved on outside axle (1)；The rotating ring (6) is located on the outside of the pump of rotating ring back seat (26), the rotating ring (6) Lateral wall and rotating ring back seat (26) outer ring (30) inwall between mutual male-female engagement, the rotating ring (6) also directly be set with Outside axle (1), second O-ring (11) in gap between moving sealing ring (6) and axle (1) is provided on the inside of the pump of rotating ring (6), The outer face (23) of rotating ring (6) is mutually close to stationary ring (4) inner face (24), and the rotating ring front stall (25) is driven through at least one Sell (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 inner ring (31) of the rotating ring front stall (25) sets and pressed Its inner ring (31) stretches out the circular arc convex sheet (32) of direction stretching, and the circular arc convex sheet (32) is 2, along its inner ring (31) circle Week is arranged symmetrically；Accordingly, the inner ring (31) of the rotating ring back seat (26) opens up arc gap (33), the arc gap (33) For 2, also it is arranged symmetrically along its inner ring (31) circumference.

3. shaft sealer as claimed in claim 1, it is characterised in that the section of the rotating ring back seat (26) is in " work " word Type, second O-ring (11) are arranged at the gap between rotating ring back seat (26) and the rotating ring (6).

4. 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 first breach (15) that respective numbers are opened up on the inside of the pump of the rotating ring front stall (25) is inserted for trundle (13) is floating type Enter.

5. shaft sealer as claimed in claim 3, it is characterised in that symmetrically open up 2 on the outside of the pump on the impeller (2) Pin-and-hole (16), 2 pin-and-holes (16) that close-fitting is inserted on the impeller (2) are distinguished in wherein one end of 2 trundles (13), described dynamic 2 the first breach (15), which are also symmetrically opened up, on the inside of the pump of ring front stall (25) supplies trundle (13) floating type insertion.

6. shaft sealer as claimed in claim 1, it is characterised in that the outer ring (30) of the rotating ring back seat (26) is along it Wall circumference sets corresponding depression (18) at least provided with 2 convex tendons (17), the rotating ring (6) along its lateral wall circumference.

7. shaft sealer as claimed in claim 6, it is characterised in that outer ring (30) inwall of the rotating ring back seat (26) is set 4 convex tendons (17) are put along its inwall circumference uniform distribution, rotating ring (6) outside sets 4 corresponding depressions (18), along its outer wall Circumference uniform distribution.

8. shaft sealer as claimed in claim 1, it is characterised in that described machine envelope seat (3) seal section opens up pin-and-hole (16), the pin-and-hole (16) is at least 2, the cylinder circumference uniform distribution of seat (3) is sealed along the machine, each pin-and-hole (16) is in a manner of close-fitting Insert steady pin (19)；The second breach (21) is opened up on the outside of the pump of the stationary ring (4), is inserted for steady pin (19) by pine with a manner of Enter.

9. shaft sealer as claimed in claim 1, it is characterised in that the blind end of the machine envelope seat (3) sets flexible close Envelope combination unit, the flexible sealing combination unit includes tetrafluoro circle or graphite annulus (34), with packing or outside framework oil seal (35) group Close.

10. shaft sealer as claimed in claim 9, it is characterised in that the axle (1) is at the blind end of machine envelope seat (3) Axle sleeve (36) is set with, the flexible sealing combination unit is sleeved on outside axle sleeve (36), and axle sleeve (36) is solid through finger screw (37) Dingan County is on axle (1) outer surface, and the outside of the blind end of the machine envelope seat (3) sets pressing plate (38), and the pressing plate (38) is through spiral shell Bolt (39) is fixedly mounted on the outside of the blind end of the machine envelope seat (3), and the 3rd O is set between the axle sleeve (36) and axle (1) Shape circle (40).

11. shaft sealer as claimed in claim 1, it is characterised in that the machine envelope seat (3) is an entirety, and machine seals seat (3) flange end is set on the inside of pump, multiple connecting holes (22) are opened up along flange end circumference, through multiple bolts (39) and the pump housing (7) Outside be fixedly connected；The flange end of the machine envelope seat (3) opens up annular groove (41), the embedded 4th O shapes in the annular groove (41) Enclose (42).

12. shaft sealer as claimed in claim 1, it is characterised in that the machine is sealed into seat (3) material section and seal section Split settings are that machine seals front stall (43) and is honored as a queen seat (44) with machine, and the machine envelope seat (3) is to seal front stall (43) and machine by machine to be honored as a queen seat (44) component assembled, the pump inner side of machine envelope front stall (43) set flange end, multiple connections are opened up along its flange end circumference Hole (22), the inner chamber of the pump housing (7) open up flange installation cavity, and the flange end of machine envelope front stall (43) is embedded in the flange installation Chamber, machine is sealed into seat (3) through multiple bolts (39) from the inner chamber of the pump housing (7) and is fixedly connected with the pump housing (7)；The machine envelope front stall (43) Flange end and the pump housing (7) between set the 4th O-ring (42).

13. shaft sealer as claimed in claim 12, it is characterised in that along its wall on the outside of the pump of the machine envelope front stall (43) Thick circumference opens up multiple screwed holes (46)；The machine be honored as a queen seat (44) pump on the inside of be also provided with flange end, along its flange end circumference Multiple connecting holes (22) are opened up, the machine is sealed into front stall (43) through multiple bolts (39) is fixedly connected with machine seat (44) of being honored as a queen；Institute Machine envelope front stall (43) and machine is stated to be honored as a queen the 5th O-ring (45) of setting between seat (44).

14. a kind of impeller pump, including the pump housing (7), 2 impellers (2) as interactive rotor are located in the pump housing (7), synchronized case The respective corresponding impeller (2) of the parallel two piece axle (1) of output is fixedly connected, it is characterised in that every axle (1) also includes Shaft sealer as described in any one of claim 1 to 13.