CN209146331U

CN209146331U - A kind of colter mixer main shaft sealing construction

Info

Publication number: CN209146331U
Application number: CN201821548323.4U
Authority: CN
Inventors: 钱新华
Original assignee: CHANGZHOU AIBUNA MACHINERY Co Ltd
Current assignee: CHANGZHOU AIBUNA MACHINERY Co Ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-07-23
Anticipated expiration: 2028-09-20

Abstract

The utility model discloses a kind of colter mixer main shaft sealing constructions, belong to main shaft seal field, it is intended to provide a kind of main shaft sealing construction for improving main shaft seal reliability, it is insecure to solve the problems, such as to seal in existing main shaft seal, its key points of the technical solution are that, including main shaft, axle sleeve, first seal casinghousing and the second seal casinghousing, axle sleeve covers on main shaft, first seal casinghousing and the second seal casinghousing are respectively fitted over the end of main shaft, and first seal casinghousing be fixed by screws on the shell of mixing machine, it is connected by screw between first shell and second shell, rotary sleeve is equipped between main shaft and the first seal casinghousing, one end of rotary sleeve is abutted with axle sleeve, the other end is abutted with the step of main shaft, and rotary sleeve is flushed close to one end of axle sleeve with axle sleeve, main shaft offers keyway close to one end of rotary sleeve, flat key is equipped in keyway , main shaft connect by flat key with axle sleeve and rotary sleeve.The utility model is suitable for the main shaft of colter mixer.

Description

A kind of colter mixer main shaft sealing construction

Technical field

The utility model relates to a kind of main shaft sealing construction, in particular to a kind of colter mixer main shaft sealing construction.

Background technique

Colter mixer be widely used in the dryings of the sub-materials such as dry powder and mortar, chemical industry, pesticide, detergent with mix.Colter is mixed Colter in conjunction machine makes material make radial circumference flowing along barrel with main shaft rotation, while flowing through flying knife set along radial material, It is flown to throwing by high-speed rotating and is dissipated, constantly alternate, is compound, reaching material within a short period of time uniformly mixed.

The main shaft seal of existing colter mixer generallys use two ways sealing: one is packing_seal plus blowing close Envelope, another kind is outside framework oil seal.But contaminated material in mixing machine is easily advanced into using the lubricating oil of packing_seal, it adopts It is directly contacted with main shaft with outside framework oil seal, easily causes spindle heat generation, abrasion, reduce the service life of main shaft.Therefore, one is needed The sealing structure of shaft end of main shaft is planted to solve the problems, such as that mixing machine main shaft seal is insecure.

Utility model content

The purpose of the utility model is to provide a kind of colter mixer main shaft sealing constructions, have mixing machine main shaft seal can By the advantages of.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of colter mixer main shaft sealing construction, including main shaft, axle sleeve, the first seal casinghousing and the second seal casinghousing, The axle sleeve covers on main shaft, and first seal casinghousing and the second seal casinghousing are respectively fitted over the end of main shaft, and first is close Capsule body is fixed by screws on the shell of mixing machine, is connected by screw between the first shell and second shell, institute It states and is equipped with rotary sleeve between main shaft and the first seal casinghousing, one end of the rotary sleeve abuts with axle sleeve, the other end and main shaft Step abuts, and rotary sleeve is flushed close to one end of axle sleeve with axle sleeve, and the main shaft offers keyway close to one end of rotary sleeve, Flat key is equipped in the keyway, the main shaft is connect by flat key with axle sleeve and rotary sleeve.

By using above-mentioned technical proposal, in the colter mixer course of work, main shaft high speed rotation, and pass through with main shaft flat The rotary sleeve and main shaft synchronous rotary of key connection.When material and rotary sleeve contact, material is centrifuged in rotary sleeve high speed rotation It is thrown out of under the action of power, so that material is not easily accessible in main shaft and leaks into outside mixing machine barrel, reduces material waste, mention The high reliability of mixing machine main shaft seal.

Further, the rotary sleeve is equipped with far from one end of axle sleeve towards the labyrinth of the first seal casinghousing protrusion, described First seal casinghousing is equipped with the labyrinth groove being adapted to labyrinth protrusion far from one end of the second seal casinghousing.

By using above-mentioned technical proposal, the labyrinth protrusion and labyrinth groove being used cooperatively, not only increase rotary sleeve with Contact area between first seal casinghousing makes rotary sleeve be not easy to move axially, and improves the installation accuracy of rotary sleeve, also makes The more tortuous complexity of void ratio between rotary sleeve and the first seal casinghousing, can increase material leakage path and material leakage friction Power reduces material loss, improves main shaft seal performance so that material or dust are not easily accessible in main shaft.

Further, first seal casinghousing is far from offering holding tank on the inner wall of rotary sleeve, in the holding tank Equipped with several packings, and packing is coiled on the lateral wall of rotary sleeve, and the one end of first seal casinghousing far from rotary sleeve is logical It crosses screw and is fixedly connected with sealing clamp, and one end of sealing clamp is located in holding tank and abuts with packing.

By using above-mentioned technical proposal, packing_seal is further sealed main shaft, when packing is holding because of abrasion It receives when moving in slot, it is only necessary to unscrew screw, packing be squeezed with sealing clamp, so as to reduce gap.After packing damage, Also it only needs to remove sealing clamp and re-replaces packing.Since packing is coiled on rotary sleeve, thus packing using when will not make At the abrasion of main shaft, it is only necessary to rotary sleeve is replaced, so as to reduce cost.

Further, first seal casinghousing offers annular gas tank on the inner wall of labyrinth groove, and described first Seal casinghousing is equipped with compressed air inlet far from one end of labyrinth groove, and airflow channel is equipped in first seal casinghousing, and One end of airflow channel is connect with compressed air inlet, and the other end is connect with annular gas tank.

By using above-mentioned technical proposal, high pressure gas enters in airflow channel from compressed air inlet, and from air-flow Channel, which enters in annular gas tank, forms a closed annular sealing gland, and a part of gas is from labyrinth protrusion and labyrinth groove It is discharged in gap, so that the dust or material in mixing machine, which are not easy to enter from gap, damages main shaft in main shaft, extends main shaft Service life；The gas of another part is blown from the gap of the first seal casinghousing and rotary sleeve to packing, so that on packing Lubricating oil is not easy the slot leakage from labyrinth protrusion and labyrinth groove, reduces the pollution to material, improves the quality of material mixing.

Further, the main shaft is equipped with bearing far from one end of rotary sleeve, and the one end of the main shaft far from rotary sleeve is logical It crosses screw and is fixedly connected with pressing plate, and one end of pressing plate is abutted with the inner ring of bearing；

Second seal casinghousing is equipped with fuel feed hole, and fuel feed hole is located at bearing, and the fuel feed hole is equipped with oiling Mouth.

By using above-mentioned technical proposal, since mixing machine main shaft runs at high speed, spindle abrasion can be reduced equipped with bearing Or fever.Lubricating oil enters in fuel feed hole from oil filler point, and then and bearing touch, component can reduce each component in bearing Friction can also take away the heat that Bearing inner friction occurs and the heat that other outsides are transmitted, prevent bearing heating.Pressing plate is to bearing Bearing and main shaft can be improved so that bearing is not easy to move axially, and since pressing plate is fixedly connected with main shaft in inner ring axially position Installation accuracy.

Further, second seal casinghousing is equipped with annular groove close to the inner wall of axle sleeve, in the annular groove Equipped with the reinforced seal being set on axle sleeve.

By using above-mentioned technical proposal, reinforced seal is not easily accessible dust in bearing to cause to wear to bearing. Lubricating oil in bearing, which can also enter in annular groove, is lubricated reinforced seal, so that reinforced seal is not easy to wear, Extend the service life of reinforced seal.

Further, second seal casinghousing is fixedly connected with shaft end by screw far from one end of the first seal casinghousing Lid, and one end of hubcap is abutted with bearing outer ring.

By using above-mentioned technical proposal, hubcap not only can to the axially position of bearing outer ring, also act as it is dust-proof and The effect of sealing extends the service life of bearing so that extraneous dust impurity is not easily accessible bearing and causes to wear to bearing.

Further, first seal casinghousing is arranged with stiffening ring close to one end of rotary sleeve, and stiffening ring passes through spiral shell Nail is fixed on the first seal casinghousing.

By using above-mentioned technical proposal, stiffening ring not only makes the first seal casinghousing be not easy to move radially, to improve The cooperation precision of labyrinth protrusion and labyrinth groove reduces material leakage, can also improve the first seal casinghousing and mixing machine shell Bonding strength, extend the first seal casinghousing service life.

In conclusion the utility model has the following beneficial effects:

1. using rotary sleeve, keyway, flat key, rotary sleeve can be played and main shaft synchronous high-speed rotates, so that with The material of rotary sleeve contact is thrown out of under the influence of centrifugal force, so that material is not easily accessible in main shaft, reduces material Leakage effect, while the abrasion of main shaft can also be reduced, extend Main Shaft Service Life；

2. using labyrinth protrusion and labyrinth groove, can play makes have complications between rotary sleeve and the first seal casinghousing The effect of main shaft seal reliability is improved so that material is not easily accessible in main shaft in complicated path；

3. using packing and sealing clamp, it can play and further increase main shaft seal, reduce the effect of material leakage；

4. using annular gas tank, compressed air inlet, airflow channel, annular sealing gland can be formed in annular gas tank, Gas can not only be discharged from the gap between labyrinth protrusion and labyrinth groove, so that material is not easily accessible in main shaft, also make It obtains the lubricating oil in packing to be not easy to leak from the gap of labyrinth groove, reduces the pollution to material；

5. using annular groove and reinforced seal, reinforced seal is not easily accessible dust impurity in bearing, reduces Abrasion to bearing, the lubricating oil in bearing, which can enter in annular groove, is lubricated reinforced seal, and it is close to extend skeleton The service life of envelope.

Detailed description of the invention

Fig. 1 is in the present embodiment for embodying main shaft, the first seal casinghousing, the second seal casinghousing, the connection between axle sleeve Relation schematic diagram；

Fig. 2 is the enlarged drawing in the portion A in Fig. 1, convex for embodying annular gas tank, compressed air inlet, labyrinth groove and labyrinth Connection relationship between rising；

Fig. 3 is in the present embodiment for embodying the connection relationship diagram between the second seal casinghousing and pump nozzle.

In figure, 1, main shaft；11, keyway；12, flat key；2, the first seal casinghousing；21, labyrinth groove；22, holding tank；221, Packing；222, sealing clamp；23, annular gas tank；24, airflow channel；25, compressed air inlet；3, the second seal casinghousing；31, Annular groove；32, reinforced seal；33, fuel feed hole；34, pump nozzle；4, rotary sleeve；41, labyrinth protrusion；5, pressing plate；6, shaft end Lid；7, stiffening ring；8, bearing；9, axle sleeve.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Wherein identical components are presented with like reference characters.It should be noted that word used in the following description Language "front", "rear", "left", "right", "up" and "down" refer to the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" refers respectively to the direction towards or away from geometric center of specific component.

A kind of colter mixer main shaft sealing construction, as shown in Figure 1, include main shaft 1, be set on main shaft 1 axle sleeve 9, It is respectively sleeved at first seal casinghousing 2 and the second seal casinghousing 3 at 1 both ends of main shaft.First seal casinghousing 2 and the second seal casinghousing 3 are fixedly connected by screw.

As shown in Figure 1, being equipped with rotary sleeve 4 between the first seal casinghousing 2 and main shaft 1, it is close that the length of rotary sleeve 4 is greater than first The length of capsule body 2, and one end of rotary sleeve 4 is abutted with the step of main shaft 1, the other end is abutted with axle sleeve 9.It is opened up on main shaft 1 There is keyway 11, flat key 12 is equipped in keyway 11, main shaft 1 is connect by flat key 12 with rotary sleeve 4 and axle sleeve 9 jointly.When main shaft 1 is high When speed rotation, main shaft 1 is followed to rotate together by the rotary sleeve 4 that flat key 12 is connect with main shaft 1, when material is contacted with rotary sleeve 4 Place, material is thrown out of under the centrifugal force of rotary sleeve 4, so that material is not easily accessible in main shaft 1, to reduce material Waste.

As shown in Fig. 2, rotary sleeve 4 is far from axle sleeve 9(referring to Fig. 1) one end be equipped with labyrinth protrusion 41, and labyrinth protrusion 41 Towards the first seal casinghousing 2, the first seal casinghousing 2 is equipped with the labyrinth groove 21 with 41 cooperation of labyrinth protrusion.Labyrinth groove 21 And labyrinth protrusion 41 makes the void ratio between the first seal casinghousing 2 and rotary sleeve 4 more tortuous, can increase material or dust Leakage paths, so that the main shaft 1(that material or dust are not easily accessible is referring to Fig. 1) in, reduce the loss of material.Meanwhile it is complicated Labyrinth groove 21 and labyrinth protrusion 41 increase the contact area between the first seal casinghousing 2 and rotary sleeve 4, so that the first sealing Shell 2 is not easy to move axially, and improves the installation accuracy of the first seal casinghousing 2.

As depicted in figs. 1 and 2, the first seal casinghousing 2 is far from being equipped with holding tank 22 on one end inner wall of labyrinth groove 21, Several packings 221 are equipped in holding tank 22, and packing 221 is coiled on rotary sleeve 4.Sealing clamp 222 is arranged on axle sleeve 9, Sealing clamp 222 is located in holding tank 22 far from one end of axle sleeve 9, and abuts with packing 221, and sealing clamp 222 passes through screw It is fixedly connected with the first seal casinghousing 2.Packing 221 further increases the sealing of main shaft 1, so that impurity is not easy to enter axially into In main shaft 1.Meanwhile packing 221 is coiled on axle sleeve 9 so that main shaft 1 is not easy to wear, when packing 221 due to abrasion in holding tank When moving in 22, screw can be backed out, sealing clamp 222 is pushed to 22 direction of holding tank and squeezed packing 221, finally uses spiral shell Nail is fixed, and packing 221 can be made not easily shifted.When the damage of packing 221 needs replacing, under directly sealing clamp 222 is dismantled It is very convenient come the packing 221 more renewed.

As shown in Fig. 2, the first seal casinghousing 2 is equipped with annular gas tank 23 on the inner wall of labyrinth groove 21, first is close Capsule body 2 is equipped with compressed air inlet 25 far from one end of labyrinth groove 21, is equipped in the first seal casinghousing 2 and is separately connected compression Air intake 25(is referring to Fig. 1) and annular gas tank 23 airflow channel 24.High pressure gas enters gas from compressed air inlet 25 It in circulation road 24, and enters in annular gas tank 23, forms sealing gland.The gas of a part is from labyrinth groove 21 and labyrinth protrusion 41 Gap in be discharged so that dust or material are not easily accessible in main shaft 1, improve the sealing characteristics of main shaft 1.The gas of another part Body enters in packing 221 from the gap of rotary sleeve 4 and the first seal casinghousing 2, applies pressure to the lubricating oil in packing 221, So that lubricating oil is not easy to flow out and contaminated material from labyrinth protrusion 41, the mixing quality of material is improved.

As shown in Figure 1, the first seal casinghousing 2 is arranged with stiffening ring 7 close to one end of labyrinth groove 21, and stiffening ring 7 is logical Screw is crossed to be fixed on the first seal casinghousing 2.When main shaft 1 is installed, screw sequentially passes through the first seal casinghousing 2 and stiffening ring 7 is solid It is scheduled on mixing machine shell, the bonding strength of the first seal casinghousing 2 and mixing machine shell not only can be improved in stiffening ring 7, also makes It obtains the first seal casinghousing 2 to be not easy to move radially, improves the installation accuracy between rotary sleeve 4 and the first seal casinghousing 2.

As shown in Figure 1, the second seal casinghousing 3 is set in the one end of axle sleeve 9 far from the first seal casinghousing 2, the second capsul Bearing 8 is equipped between body 3 and main shaft 1, and bearing 8 is located at the one end of main shaft 1 far from the first seal casinghousing 2.Main shaft 1 is close to bearing 8 one end is fixedly connected with pressing plate 5 by screw, and one end of pressing plate 5 is abutted with the inner ring of bearing 8.Pressing plate 5 is far from main shaft 1 One end be equipped with hubcap 6, hubcap 6 is fixedly connected by screw with the second seal casinghousing 3, and one end of hubcap 6 and axis Hold 8 outer ring abutting.Hubcap 6 and pressing plate 5 make bearing 8 be not easy to move axially, while hubcap 6 also acts as sealing and to axis Hold the effect of 8 protections.

As shown in Figure 1, the second seal casinghousing 3 is equipped with fuel feed hole 33, and fuel feed hole 33 is located at bearing 8, fuel feed hole 33 Pump nozzle 34(is equipped with referring to Fig. 3).Lubricating oil is entered in bearing 8 from pump nozzle 34 and is lubricated to bearing 8, can also be dropped The temperature of low bearing 8 and main shaft 1, to extend the service life of bearing 8.

As shown in Figure 1, the second seal casinghousing 3 is equipped with annular groove 31, annular groove 31 far from one end inner wall of bearing 8 It is interior to be equipped with reinforced seal 32, and reinforced seal 32 is set on axle sleeve 9.Reinforced seal 32 is realized bearing 8 and is sealed, so that dust Impurity is not easy to enter in bearing 8 from the gap of the second seal casinghousing 3 and axle sleeve 9, to extend the service life of bearing 8.Axis Reinforced seal 32 can be entered from annular groove 31 by holding the lubricating oil in 8, to lubricate reinforced seal 32, it is close to extend skeleton The service life of envelope 32.

Specific implementation process: screw sequentially passes through the first seal casinghousing 2 and stiffening ring 7, so that main shaft 1 is fixed on colter The outside of mixing machine shell.When 1 high-speed rotation of main shaft, the rotary sleeve 4 and main shaft 1 being keyed with main shaft 1 are rotated synchronously, rotary sleeve Centrifugal force is generated when 4 rotation.When material and rotary sleeve 4 contact, material is thrown out of under the influence of centrifugal force, so that object Material is not easily accessible in main shaft 1, and causes material leakage.

In 1 rotation process of main shaft, high pressure gas enters in airflow channel 24 from compressed air inlet 25, and enters ring Annular sealing gland is formed in shape air drain 23, so that have gas discharge always in the gap of labyrinth groove 21 and labyrinth protrusion 41, thus So that material is not easily accessible into gap, sealing effect is further increased.Same gas but also the lubricating oil in packing 221 not Easily outflow, improves the quality of material.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims

1. a kind of colter mixer main shaft sealing construction, including main shaft (1), axle sleeve (9), the first seal casinghousing (2) and second are close Capsule body (3), the axle sleeve (9) cover on main shaft (1), and first seal casinghousing (2) and the second seal casinghousing (3) cover respectively In the end of main shaft (1), and the first seal casinghousing (2) is fixed by screws on the shell of mixing machine, the first shell with It is connected by screw between second shell, it is characterised in that: rotation is equipped between the main shaft (1) and the first seal casinghousing (2) It covers (4), one end of the rotary sleeve (4) is abutted with axle sleeve (9), and the other end is abutted with the step of main shaft (1), and rotary sleeve (4) One end close to axle sleeve (9) is flushed with axle sleeve (9), and the main shaft (1) offers keyway (11) close to the one end of rotary sleeve (4), Flat key (12) are equipped in the keyway (11), the main shaft (1) is connect by flat key (12) with axle sleeve (9) and rotary sleeve (4).

2. a kind of colter mixer main shaft sealing construction according to claim 1, it is characterised in that: the rotary sleeve (4) One end far from axle sleeve (9) is equipped with the labyrinth protrusion (41) towards the first seal casinghousing (2), and first seal casinghousing (2) is remote One end from the second seal casinghousing (3) is equipped with the labyrinth groove (21) being adapted to labyrinth raised (41).

3. a kind of colter mixer main shaft sealing construction according to claim 2, it is characterised in that: first capsul Body (2) is equipped with several packings far from offering holding tank (22) on the inner wall of labyrinth groove (21) in the holding tank (22) (221), and packing (221) is coiled on the lateral wall of rotary sleeve (4), and first seal casinghousing (2) is far from rotary sleeve (4) One end is fixedly connected with sealing clamp (222) by screw, and one end of sealing clamp (222) is located in holding tank (22) and disk Root (221) abuts.

4. a kind of colter mixer main shaft sealing construction according to claim 3, it is characterised in that: first capsul Body (2) offers annular gas tank (23) on the inner wall of labyrinth groove (21), and first seal casinghousing (2) is recessed far from labyrinth One end of slot (21) is equipped with compressed air inlet (25), is equipped with airflow channel (24) in first seal casinghousing (2), and air-flow The one end in channel (24) is connect with compressed air inlet (25), and the other end is connect with annular gas tank (23).

5. a kind of colter mixer main shaft sealing construction according to claim 3, it is characterised in that: second capsul Inner wall of the body (3) close to axle sleeve (9) is equipped with annular groove (31), is equipped in the annular groove (31) and is set in axle sleeve (9) On reinforced seal (32).

6. a kind of colter mixer main shaft sealing construction according to claim 5, it is characterised in that: the main shaft (1) is remote One end from rotary sleeve (4) is equipped with bearing (8), and the main shaft (1) is fixedly connected with far from the one end of rotary sleeve (4) by screw Pressing plate (5), and one end of pressing plate (5) is abutted with the inner ring of bearing (8)；

Second seal casinghousing (3) is equipped with fuel feed hole (33), and fuel feed hole (33) is located at bearing (8), the fuel feed hole (33) pump nozzle (34) are equipped with.

7. a kind of colter mixer main shaft sealing construction according to claim 6, it is characterised in that: second capsul Body (3) is fixedly connected with hubcap (6) far from the one end of the first seal casinghousing (2) by screw, and one end of hubcap (6) and Bearing (8) outer ring abuts.

8. a kind of colter mixer main shaft sealing construction according to claim 7, it is characterised in that: first capsul Body (2) is arranged with stiffening ring (7) close to the one end of rotary sleeve (4), and stiffening ring (7) is fixed by screws in the first seal casinghousing (2) on.