CN203477325U - Mixing blade sealing device and dry-mixed mortar mixer - Google Patents
Mixing blade sealing device and dry-mixed mortar mixer Download PDFInfo
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- CN203477325U CN203477325U CN201320496516.0U CN201320496516U CN203477325U CN 203477325 U CN203477325 U CN 203477325U CN 201320496516 U CN201320496516 U CN 201320496516U CN 203477325 U CN203477325 U CN 203477325U
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- labyrinth
- fly cutter
- seal structure
- sealing
- cover
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Abstract
The utility model relates to a mixing blade sealing device and a dry-mixed mortar mixer. The mixing blade sealing device comprises a labyrinth seal structure and a gas filling seal structure, wherein both the labyrinth seal structure and the gas filling seal structure are arranged on a mixing blade shaft, and the gas filling seal structure is arranged outside the labyrinth seal structure and connected with an external gas source and can achieve sealing outside the labyrinth seal structure. According to the mixing blade sealing device, the labyrinth seal structure and the gas filling seal structure are adopted to achieve combined sealing, powder entering difficulty is improved due to the labyrinth seal structure, the situations that powder leaks outwards under motion inertia and molecules of the powder diffuse are further prevented by adding the gas filling seal structure on the outer side of the labyrinth seal structure, so that the powder moving at a high speed is effectively prevented from entering the sealing device; thus, the sealing performance of the sealing device is guaranteed, and the service life of sealing elements is prolonged.
Description
Technical field
The utility model relates to engineering machinery field, relates in particular to a kind of fly cutter seal arrangement and dry-mixed mortar stirrer.
Background technique
Dry-mixed mortar stirrer is the machinery that multiple dryness powder and additive are mixed, and its working medium is powder materials.Fly cutter (or claiming fly knife device) is the device for powder conglomeration is broken up in dry-mixed mortar stirrer.
At present, existing fly knife device (referring to Fig. 1 and Fig. 2) is to adopt the filled combined seal structure a10 in labyrinth with the sealing of material surface of contact, on fly cutter axle a1, be arranged in cover on the position of mixing drum body a6 and have rotating ring a7, groove by rotating ring a7 and stationary ring a8 complements each other to form labyrinth sealing parts, sealing seat a4 is installed in outside, filler sealing parts a9 is housed in sealing seat a4, filler sealing parts a9 is enclosed in sealing seat a4 by gland a2, stationary ring a8, rotating ring a7, filler sealing parts a9 forms seal arrangement, to forming the space of sealing between fly cutter axle a1 and mounting flange a5, stop the leakage of material.
The sealing road of this seal arrangement is shorter, when dry-mixed mortar stirrer is when working, stir the powder high speed rotary motion in cylindrical shell, diffusion principle due to motional inertia and molecule, powder is still easily along with the rotation of fly cutter axle enters into filler sealing parts inside, continue to diffuse in fly cutter seal clearance, and then damage Sealing, reduce the life-span of Sealing.
Model utility content
The purpose of this utility model is to propose a kind of fly cutter seal arrangement and dry-mixed mortar stirrer, can effectively stop powder to enter seal arrangement inside, increases the working life of Sealing.
For achieving the above object, the utility model provides a kind of fly cutter seal arrangement, comprise: labyrinth seal structure and gas are filled sealing configuration, described labyrinth seal structure and described gas are filled sealing configuration and are all arranged on fly cutter axle, described gas is filled the outside that sealing configuration is located at described labyrinth seal structure, and connect external air source, can form hermetic seal in the outside of described labyrinth seal structure.
Further, described labyrinth seal structure is comprised of radial labyrinth and axial labyrinth, described radial labyrinth is arranged on inner position on described fly cutter axle with respect to described axial labyrinth, described axial labyrinth is arranged on outer position on described fly cutter axle with respect to described radial labyrinth, and described gas is filled sealing configuration and is arranged on the outer position on described fly cutter axle with respect to described axial labyrinth.
Further, described radial labyrinth is formed by the composite structure of a plurality of projections on sealing cover and a plurality of grooves in cover for seat, a plurality of projections on described sealing cover are inserted into respectively in a plurality of grooves in described cover for seat, described sealing cover is arranged on described fly cutter axle, and described cover for seat is located on the axle sleeve of described fly cutter axle.
Further, described axial labyrinth is formed by the composite structure of the outer surface of a plurality of grooves on the internal surface of plastic sheath and described axle sleeve, and described plastic sheath is set on described axle sleeve, and the inner side of the described plastic sheath described cover for seat that reclining.
Further, at the outer surface of described cover for seat, be provided with a groove, and in the groove of the outer surface of described cover for seat, O RunddichtringO be set.
Further, described gas is filled sealing configuration and is comprised a plurality of source of the gas passages, one end of described a plurality of source of the gas passages all connects external air source, and the other end all leads to the above axial labyrinth of outer surface of described axle sleeve and the position between the oil sealing parts on described fly cutter axle.
Further, described labyrinth seal structure comprises a radial labyrinth and at least one axial labyrinth.
Further, described radial labyrinth has projection at least two group sealing covers and the groove in cover for seat, and there is the groove on the internal surface of at least three plastic sheaths in described axial labyrinth.
For achieving the above object, the utility model provides a kind of dry-mixed mortar stirrer, comprises and stirs cylindrical shell, fly cutter axle, sealing cover, cover for seat, plastic sheath, axle sleeve, oil sealing parts, bearing and bearing support, wherein, also comprises aforesaid fly cutter seal arrangement.
Based on technique scheme; the utility model has adopted labyrinth seal structure and gas filling sealing configuration to carry out combined labyrinth and carbon gland; utilize labyrinth seal structure to increase the difficulty that powder is invaded; and increase gas in the outside of this structure, fill sealing configuration; can further stop powder under motional inertia to external leakage; avoid the diffusion of powder molecule; effectively stoped high speed powder to enter in seal arrangement; and then protected the sealability of seal arrangement, extend the working life of Sealing.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the sealed structural representation of existing fly knife device.
Fig. 2 is the enlarged diagram of circle part in Fig. 1.
Fig. 3 is an embodiment's of the utility model fly cutter seal arrangement structural representation.
Fig. 4 is the enlarged diagram of circle part in Fig. 3.
Fig. 5 is the structural representation of radial labyrinth in the utility model fly cutter seal arrangement embodiment.
Fig. 6 is the structural representation in axial labyrinth in the utility model fly cutter seal arrangement embodiment.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Consider that dry-mixed mortar stirrer is when work, the state of powder in stirring cylindrical shell in high speed rotary motion, this powder forms the trend that the fly cutter axle of the sealing of seal arrangement to the right enters under the effect of motional inertia and molecular diffusion principle, simple axial labyrinth seal cannot effectively stop entering of powder, therefore the utility model has added gas to fill sealing configuration on the basis of labyrinth seal structure, be that fly cutter seal arrangement provided by the utility model comprises labyrinth seal structure and gas filling sealing configuration, wherein labyrinth seal structure and gas filling sealing configuration are all arranged on fly cutter axle, gas is filled the outside that sealing configuration is located at labyrinth seal structure, and connect external air source, can form hermetic seal in the outside of labyrinth seal structure.This gas is filled sealing configuration can form certain air pressure in fly cutter seal arrangement, a small amount of powder entering in labyrinth seal can be blown back to stirring inner barrel.
Before mention, simple axial labyrinth seal is difficult to effectively stop entering of powder, in another embodiment in the utility model, labyrinth seal structure can be comprised of radial labyrinth and axial labyrinth, wherein, radial labyrinth can be arranged on position inner on fly cutter axle with respect to axial labyrinth, and axially labyrinth can be arranged on position outer on fly cutter axle with respect to radial labyrinth, and gas is filled sealing configuration and with respect to axial labyrinth, is arranged on the outer position on fly cutter axle.Outer, interior concept is herein aimed at and stirs the outside and inner of cylindrical shell, corresponds in Fig. 3, in the left side of stirring cylindrical shell 3 is, outside the right is.
As shown in Figure 3, be an embodiment's of the utility model fly cutter seal arrangement structural representation.In conjunction with Fig. 4, the labyrinth seal structure of the fly cutter seal arrangement in the present embodiment is comprised of radial labyrinth and axial labyrinth, wherein radial labyrinth can be formed by the composite structure of a plurality of projections on sealing cover 1 and a plurality of grooves in cover for seat 2, under mounted state, a plurality of projections on sealing cover 1 are inserted into respectively in a plurality of grooves in cover for seat 2, and sealing cover 1 is arranged on fly cutter axle 11, cover for seat 2 is set on the axle sleeve 6 of fly cutter axle 11.
Axially labyrinth can be formed by the composite structure of the outer surface of a plurality of grooves on the internal surface of plastic sheath 5 and axle sleeve 6, and plastic sheath 5 is set on axle sleeve 6, and the inner side of plastic sheath 5 cover for seat 2 that reclining.Outer surface in cover for seat 2 can arrange a groove, and O RunddichtringO 4 is set in groove, can play the effect of sealing gas.
As seen from Figure 3, radial labyrinth is arranged on position inner on fly cutter axle 11 with respect to axial labyrinth, and gas filling sealing configuration is arranged on the outer position on fly cutter axle 11 with respect to axial labyrinth.And gas filling sealing configuration can comprise a plurality of source of the gas passages 12, one end of a plurality of source of the gas passages 12 all connects external air source, and the other end all leads on the outer surface of axle sleeve 6, the position between concrete corresponding oil sealing parts 7 on axial labyrinth and fly cutter axle 11.
In Fig. 3, can also see bearing support 10, bearing 9 and nut 8, these parts are arranged on the outer position of oil sealing parts 7.
Fig. 5 and Fig. 6 have provided respectively a kind of radial labyrinth and the axial structural type in labyrinth, and radial labyrinth comprises projection on two groups of sealing covers and the groove in cover for seat, and axially labyrinth comprises the groove 14 on the internal surface of three plastic sheaths.In fact, adopt these more sealing configurations, sealing effect can be better, but also can increase machining accuracy and processing cost, so designer can select the quantity of suitable sealing configuration as required.
For radial labyrinth, although also adopted the form of radial labyrinth in prior art, it only has a road sealing groove, and the distance on the radial distance of seal groove and fly cutter axle surface is less, and this more easily enters powder and passes through seal groove.And in the present embodiment, adopted the seal groove cooperating structure 13 being formed by the projection on sealing cover and the groove in cover for seat of twice, and these seal groove cooperating structures are to the distance on fly cutter axle surface, and the distance between groove can be set to larger size, to have increased that powder enters and by the difficulty of seal groove, for example according to the size Selection seal groove cooperating structure of sealing cover and cover for seat, to the distance on fly cutter axle surface, be greater than 10mm, and distance between groove is made as about 5.85mm etc.
Radial labyrinth moves when work, in the inner side of stirring cylindrical shell, directly contacts with powder, and the structure that therefore adopts this projection to extend in groove can effectively stop powder axially entering along fly cutter axle.And axially labyrinth is static when work, and the inside in seal arrangement, directly do not contact with the external world, therefore can be arranged to the structure of a plurality of grooves, this structure does not affect installation, and groove can also play the effect of temporary powder, thereby stops powder radially to enter along fly cutter axle.The two position relationship can not be changed.
In the embodiment shown in fig. 3, labyrinth seal structure comprises a radial labyrinth and an axial labyrinth.According to sealing needs, can also further increase the quantity in axial labyrinth, for example adopt the labyrinth seal structure of a radial labyrinth and two or three axial labyrinth combinations.
Fly cutter seal arrangement of the present utility model is applicable to all kinds of mortar blending devices, be particularly useful for dry-mixed mortar stirrer, this class dry-mixed mortar stirrer, except comprising above-mentioned any fly cutter seal arrangement, also comprises and stirs cylindrical shell, fly cutter axle, sealing cover, cover for seat, plastic sheath, axle sleeve, oil sealing parts, bearing and bearing support etc.
By the explanation to each embodiment of fly cutter seal arrangement above, can find out this fly cutter seal arrangement and adopt the dry-mixed mortar stirrer of this fly cutter seal arrangement at least to comprise following advantage:
By the combining form of radial and axial two orthogonal labyrinth seals and hermetic seal, formed three-layer sealed device, improve existing simple labyrinth seal and be difficult to the problem that effectively stops powder to enter, multiple-sealed groove cooperating structure in the radial direction and the multiple-sealed groove of axial direction can increase the difficulty that powder is invaded, and powder almost cannot be invaded; The in the situation that of this highly difficult intrusion, increase again the hermetic seal of San road; can stop powder under motional inertia to exosmosis; also well avoided the diffusion of powder molecule; effectively stoped powder to fly cutter seal arrangement internal motion; and then protected the sealability of fly cutter seal arrangement, extended the working life that forms the Sealing of fly cutter seal arrangement.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characteristics is equal to replacement embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.
Claims (9)
1. a fly cutter seal arrangement, it is characterized in that, comprise: labyrinth seal structure and gas are filled sealing configuration, described labyrinth seal structure and described gas are filled sealing configuration and are all arranged on fly cutter axle, described gas is filled the outside that sealing configuration is located at described labyrinth seal structure, and connect external air source, can form hermetic seal in the outside of described labyrinth seal structure.
2. fly cutter seal arrangement according to claim 1, it is characterized in that, described labyrinth seal structure is comprised of radial labyrinth and axial labyrinth, described radial labyrinth is arranged on inner position on described fly cutter axle with respect to described axial labyrinth, described axial labyrinth is arranged on outer position on described fly cutter axle with respect to described radial labyrinth, and described gas is filled sealing configuration and is arranged on the outer position on described fly cutter axle with respect to described axial labyrinth.
3. fly cutter seal arrangement according to claim 2, it is characterized in that, described radial labyrinth is formed by the composite structure of a plurality of projections on sealing cover and a plurality of grooves in cover for seat, a plurality of projections on described sealing cover are inserted into respectively in a plurality of grooves in described cover for seat, described sealing cover is arranged on described fly cutter axle, and described cover for seat is located on the axle sleeve of described fly cutter axle.
4. fly cutter seal arrangement according to claim 3, it is characterized in that, described axial labyrinth is formed by the composite structure of the outer surface of a plurality of grooves on the internal surface of plastic sheath and described axle sleeve, described plastic sheath is set on described axle sleeve, and the inner side of the described plastic sheath described cover for seat that reclining.
5. fly cutter seal arrangement according to claim 3, is characterized in that, at the outer surface of described cover for seat, is provided with a groove, and in the groove of the outer surface of described cover for seat, O RunddichtringO is set.
6. fly cutter seal arrangement according to claim 2, it is characterized in that, described gas is filled sealing configuration and is comprised a plurality of source of the gas passages, one end of described a plurality of source of the gas passages all connects external air source, and the other end all leads to the above axial labyrinth of outer surface of described axle sleeve and the position between the oil sealing parts on described fly cutter axle.
7. fly cutter seal arrangement according to claim 2, is characterized in that, described labyrinth seal structure comprises a radial labyrinth and at least one axial labyrinth.
8. fly cutter seal arrangement according to claim 4, is characterized in that, described radial labyrinth has projection at least two group sealing covers and the groove in cover for seat, and there is the groove on the internal surface of at least three plastic sheaths in described axial labyrinth.
9. a dry-mixed mortar stirrer, comprises and stirs cylindrical shell, fly cutter axle, sealing cover, cover for seat, plastic sheath, axle sleeve, oil sealing parts, bearing and bearing support, it is characterized in that, also comprises the arbitrary described fly cutter seal arrangement of claim 1～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496516.0U CN203477325U (en) | 2013-08-15 | 2013-08-15 | Mixing blade sealing device and dry-mixed mortar mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496516.0U CN203477325U (en) | 2013-08-15 | 2013-08-15 | Mixing blade sealing device and dry-mixed mortar mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477325U true CN203477325U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320496516.0U Expired - Lifetime CN203477325U (en) | 2013-08-15 | 2013-08-15 | Mixing blade sealing device and dry-mixed mortar mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676787A (en) * | 2019-01-28 | 2019-04-26 | 河南三和水工机械有限公司 | A kind of environment-friendly dry mortar stirring device |
-
2013
- 2013-08-15 CN CN201320496516.0U patent/CN203477325U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676787A (en) * | 2019-01-28 | 2019-04-26 | 河南三和水工机械有限公司 | A kind of environment-friendly dry mortar stirring device |
| CN109676787B (en) * | 2019-01-28 | 2019-09-24 | 河南三和水工机械有限公司 | A kind of environment-friendly dry mortar stirring device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140312 |
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| CX01 | Expiry of patent term |