CN112145694A - Multistage rotary seal for granular water-containing raw materials - Google Patents
Multistage rotary seal for granular water-containing raw materials Download PDFInfo
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- CN112145694A CN112145694A CN202011124653.2A CN202011124653A CN112145694A CN 112145694 A CN112145694 A CN 112145694A CN 202011124653 A CN202011124653 A CN 202011124653A CN 112145694 A CN112145694 A CN 112145694A
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- 239000002994 raw material Substances 0.000 title claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 82
- 238000007789 sealing Methods 0.000 claims abstract description 63
- 239000008187 granular material Substances 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 17
- 238000001125 extrusion Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 6
- 239000012466 permeate Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/168—Sealings between relatively-moving surfaces which permits material to be continuously conveyed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/54—Other sealings for rotating shafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a multistage rotary seal for a granular water-containing raw material, and belongs to the technical field of rotary seals for granular materials. The invention relates to a multistage rotary seal for a granular water-containing raw material, which comprises a rotating shaft, wherein a granular raw material bin is coaxially sleeved in the middle of the rotating shaft along the circumferential direction of the rotating shaft, multistage rotary seals are coaxially sleeved at two ends of the contact part of the granular raw material bin and the rotating shaft along the circumferential direction of the rotating shaft, the peripheral surfaces of the multistage rotary seals are compressed through a sleeve and are fixed through a compression flange, so that the rotary gap of the rotary seals is prevented from being directly communicated with the raw material in the granular raw material bin, and the sealing performance is ensured; the outer side surface of the granular raw material bin at the upper part of the rotating shaft is symmetrically provided with the pressure relief channel, so that materials entering the pressure relief channel from the material inlet are discharged into the granular raw material bin from the upper part through the material outlet, residual materials adsorbed on each stage of seal are removed, and the leakage of the materials caused by the fact that the materials enter the next stage of seal is prevented.
Description
Technical Field
The invention relates to the technical field of rotary sealing of granular materials, in particular to a multistage rotary seal for granular water-containing raw materials.
Background
For a conveying pump containing particulate materials, the pressure of external washing water is required to be greater than that of a sealing medium, otherwise the sealing medium possibly permeates into a sealing ring behind a static ring to be deposited or crystallized, so that the static ring is clamped, and a compensation spring cannot push the static ring, so that sealing failure is caused; in addition, the water-containing raw material has strong permeability, because the rotating gap of the rotary seal is directly communicated with the raw material, the sealing is particularly difficult, and a special sealing structure is required to ensure the sealing performance.
The shaft seal device of rotary machinery, such as centrifugal pump, centrifuge, reaction kettle and compressor, has a shaft seal device for preventing leakage because the transmission shaft penetrates inside and outside the equipment, a circumferential gap exists between the shaft and the equipment, the medium in the equipment leaks outwards through the gap, and if the pressure in the equipment is lower than the atmospheric pressure, the air leaks into the equipment. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "one disadvantage of these known devices is that: these known devices do not maintain themselves coaxial with the shaft when the latter is in a non-centred position with respect to the container, due to the expansion of the side walls of the container caused by the high internal temperature. The displacement of the side walls causes an asymmetric deformation of the known sealing device, which is over-compressed in the lower half of the shaft, but in the upper half a space can be created, from which gas can leak from the container, effectively reducing the effectiveness of the sealing device. In view of these problems, it is only possible to compress such a seal and subsequently reduce the sealing time.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the problems of difficult shaft rotary sealing of the existing water-containing raw materials and the like, the invention designs the multistage rotary sealing for the granular water-containing raw materials.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a multi-stage rotary seal for granular water-containing raw materials comprises a rotary shaft, wherein a granular raw material bin is coaxially sleeved in the middle of the rotary shaft along the circumferential direction of the rotary shaft, the upper end of the granular raw material bin is open, the bottom of the granular raw material bin is sealed, multi-stage rotary seals are coaxially sleeved at two ends of the contact position of the granular raw material bin and the rotary shaft along the circumferential direction of the rotary shaft, the outer ends of the multi-stage rotary seals are fixed through a pressing flange, so that the rotary gap of the rotary seals is prevented from being directly communicated with the raw materials in the granular raw material bin; the periphery of the multi-stage rotary seal is coaxially sleeved with a sleeve, the sleeve is fixedly connected with the compression flange through a bolt, so that the sleeve is compressed on the periphery of the multi-stage rotary seal, the contact pressure between the multi-stage rotary seal and the rotating shaft is increased, the friction force is increased, the sealing effect is ensured, and the fitting degree of the sleeve and the multi-stage rotary seal is good; a pressure relief channel is symmetrically arranged on the outer side surface of the granular raw material bin at the upper part of the rotating shaft, a material inlet at the lower end of the pressure relief channel is communicated with the multistage rotary seal at the inner side of the sleeve, a material outlet is arranged at one end far away from the material inlet, the material outlet is externally connected to the outer side of the granular raw material bin, and the height of the material outlet is higher than the height of the highest storage surface of the granular raw material bin and is communicated with the granular raw material bin; when the material infiltrates into the multistage rotary seal, the infiltrated material can enter the pressure relief channel from the material inlet, and due to the action of pressure, the material entering the pressure relief channel from the material inlet is discharged into the granular raw material bin from the position above the highest storage surface of the granular raw material bin through the material outlet, so that the leakage of the material is prevented.
According to the further technical scheme, the multistage rotary seal comprises a first-stage seal, the first-stage seal is vertically attached to the outer side face of the granular raw material bin, a rotary seal cover is vertically meshed with the inner side face of the first-stage seal, and the rotary seal cover is fixedly mounted on a rotary shaft in a matched manner of a bolt; the oppositely-combined toothed flange with high surface hardness is adopted to ensure that the oppositely-combined toothed flange has the minimum oppositely-combined gap, the first sealing is carried out by utilizing the processing precision of the oppositely-combined toothed flange, and meanwhile, the extrusion pressure of raw materials to the rotary sealing gap is blocked.
According to the technical scheme, a second-stage seal is coaxially sleeved on one side, away from the particle raw material bin, of the first-stage seal, the outer side wall of the second-stage seal is in contact with the inner side wall of the sleeve and is in clearance filtering seal, the second-stage seal is guaranteed to be sealed by machining precision, and meanwhile, raw material extrusion pressure entering a subsequent seal is further eliminated.
According to the technical scheme, a third-stage seal is coaxially sleeved on one side, far away from the first-stage seal, of the second-stage seal, the third-stage seal is a soft structure sealing material, and raw material particles entering the section of the particle raw material bin can be embedded or adsorbed in a sealing medium in the third-stage seal.
According to the technical scheme, a fourth-stage seal and a fifth-stage seal are sequentially arranged on one side, away from the second-stage seal, of the third-stage seal, the upper portions of the fourth-stage seal and the fifth-stage seal are communicated with the granular raw material bin through an external pressure relief channel, when materials still permeate into the fourth-stage seal and the fifth-stage seal after the first several stages of seals, the permeated materials can enter the pressure relief channel from a material inlet, and due to the action of pressure, the materials are discharged into the granular raw material bin through a material outlet to remove residual materials adsorbed on the seals at all stages so as to prevent the materials from entering the seals at the later stages.
According to a further technical scheme, the fourth-stage sealing structure and the fifth-stage sealing structure are the same and are respectively and fixedly installed on the outer wall of the rotating shaft through a fixed static seal I and a fixed static seal I; gaps I and II are respectively reserved between the fourth-stage sealing surface and the fifth-stage sealing surface and the inner side wall of the sleeve, when the rotating shaft rotates, the fourth-stage sealing surface and the fifth-stage sealing surface can be fixed on the rotating shaft and rotate along with the rotating shaft, raw material particles brought into the third-stage sealing surface through the rotating sealing surface are brought into the rotating shaft, and when the raw material particles pass through the two sealing structures, the moving direction of the raw material particles is changed into radial plane extrusion sealing, so that the raw material particles are prevented from passing through the rotating surface of the rotating shaft and carrying out shaft ends to influence the sealing effect; meanwhile, when the particle raw materials pass through the two seals, the leakage-free sealing effect is achieved on the rotary seal completely.
According to the technical scheme, the fifth-stage seal is coaxially sleeved with the sixth-stage seal on the side far away from the fourth-stage seal, the outer end of the sixth-stage seal is fixed through a compression flange matched with a bolt, the sixth-stage seal further guarantees the previous fifth-stage seal, and the same sealing structure as the third-stage seal is adopted, so that the high sealing effect of the rotary seal is guaranteed.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the multistage rotary seal for the granular water-containing raw material, the multistage rotary seal is coaxially sleeved at the two ends of the granular raw material bin in the middle of the rotary shaft and is fixed through the pressing flange, so that the rotary gap of the rotary seal is prevented from being directly communicated with the raw material in the granular raw material bin, and the sealing performance is ensured; the periphery of the multi-stage rotary seal is coaxially sleeved with a sleeve, and the sleeve is tightly pressed on the periphery of the multi-stage rotary seal, so that the contact pressure between the multi-stage rotary seal and the rotating shaft is increased, the friction force is further increased, the sealing effect is ensured, and the fitting degree of the sleeve and the multi-stage rotary seal is better; the sleeve and the pressing flange are fixedly connected through bolts, so that the sealing performance is ensured;
(2) according to the multistage rotary seal for the granular water-containing raw material, the first-stage seal is vertically attached to the outer side surface of the granular raw material bin, the rotary seal cover is vertically meshed with the inner side surface of the first-stage seal, the first-stage seal adopts the oppositely-combined toothed flange with high surface hardness to ensure that the oppositely-combined toothed flange has the minimum involution gap, the first-stage seal is carried out by utilizing the processing precision of the oppositely-combined toothed flange, and meanwhile, the extrusion pressure of the raw material on the rotary seal gap is blocked;
(3) according to the multistage rotary seal for the granular water-containing raw materials, the outer side wall of the second-stage seal is in contact with the inner side wall of the sleeve and is a gap filtering seal, the second-stage seal also ensures the sealing effect by means of machining precision, and meanwhile, the extrusion pressure of the raw materials entering the subsequent seal is further eliminated;
(4) according to the multistage rotary seal for the granular water-containing raw material, the third stage seal is a soft structure sealing material, and raw material granules entering the section of the granular raw material bin can be embedded or adsorbed in a sealing medium in the third stage seal;
(5) according to the multistage rotary seal for the granular water-containing raw material, the fourth-stage seal structure and the fifth-stage seal structure are the same and are both plane seals; the raw material particles brought into the third stage seal by the rotary seal are changed into radial plane extrusion seal in the moving direction when passing through the two seal structures, so that the raw material particles are prevented from passing through the rotating surface of the rotating shaft and being brought out of the shaft end to influence the seal effect; meanwhile, when the particle raw material passes through the two seals, the leakage-free sealing effect is completely achieved on the rotary seal;
(6) according to the multistage rotary seal for the granular water-containing raw material, the outer end of the sixth-stage seal is fixed by the pressing flange matched with the bolt, the sixth-stage seal further guarantees the front five-stage seal, and the seal structure identical to the third-stage seal is adopted, so that the high seal effect of the rotary seal is guaranteed;
(7) according to the multistage rotary seal for the granular water-containing raw material, the upper parts of the fourth-stage seal and the fifth-stage seal are communicated with the granular raw material bin through the external pressure relief channel; when the material still permeates into the fourth-stage seal and the fifth-stage seal after the first several stages of seals, the permeated material can enter the pressure relief channel from the material inlet, a material outlet is arranged at one end far away from the material inlet, the material outlet is externally connected to the outer side of the granular raw material bin and communicated with the granular raw material bin, the height of the material outlet is higher than the highest storage height of the granular raw material bin, and due to the action of pressure, the material entering the pressure relief channel from the material inlet is discharged into the granular raw material bin from the upper part of the highest storage surface of the granular raw material bin through the material outlet so as to remove residual material adsorbed on the seals of all stages and prevent the leakage of the material caused by the fact that the material enters the later several stages of seals.
Drawings
FIG. 1 is a longitudinal sectional structural view of the multistage rotary seal of the present invention in a working state;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of the portion B in FIG. 1;
FIG. 4 is a schematic view of a longitudinal cut-away configuration of the multi-stage rotary seal of the present invention;
fig. 5 is an enlarged schematic view of part C of fig. 4.
In the figure: 1-a rotating shaft; 2-a granular raw material bin; 3-a sleeve; 4-pressing the flange; 5-multi-stage rotary sealing; 6-a pressure relief channel; 7-highest storage level of the granular raw material bin; 50-rotating the seal cap; 51-first stage seal; 52-second level sealing; 53-third level sealing; 54-fourth stage sealing; 55-fifth stage sealing; 56-sixth stage sealing; 61-material inlet; 62-material outlet; 501-fixed static seal I; 541-fixed static seal I; 542-gap I; 551-fixed static seal I; 552-gap I.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
Example 1
The multistage rotary seal for the granular water-containing raw material of the embodiment, as shown in fig. 1, comprises a rotary shaft 1, a granular raw material bin 2 is coaxially sleeved in the middle of the rotary shaft 1 along the circumferential direction thereof, the upper end of the granular raw material bin 2 is open, the bottom of the granular raw material bin is sealed, multistage rotary seals 5 are coaxially sleeved at two ends of the contact position of the granular raw material bin 2 and the rotary shaft 1 along the circumferential direction of the rotary shaft 1, a sleeve 3 is coaxially sleeved at the periphery of the multistage rotary seals 5, the sleeve 3 is fixedly connected with a pressing flange 4 through a bolt, so that the sleeve 3 is pressed at the periphery of the multistage rotary seals 5, the contact pressure between the multistage rotary seals 5 and the rotary shaft 1 is increased, the friction force is increased, the sealing effect is ensured, and the degree of attachment of the sleeve 3 and the multistage rotary seals 5 is good, so as to prevent the rotary gaps of the rotary seals, thereby ensuring the sealing performance; as shown in fig. 2, a pressure relief channel 6 is symmetrically arranged on the outer side surface of the granular raw material bin 2 at the upper part of the rotating shaft 1, a material inlet 61 at the lower end of the pressure relief channel 6 is communicated with the multistage rotary seal 5 at the inner side of the sleeve 3, a material outlet 62 is arranged at one end far away from the material inlet 61, and the material outlet 62 is externally connected to the outer side of the granular raw material bin 2 and is communicated with the granular raw material bin 2; the height of the material outlet 62 is higher than the height of the highest storage level 7 of the granular raw material bin, when the materials permeate into the multistage rotary seal 5, the permeated materials can enter the pressure relief channel 6 from the material inlet 61, and due to the action of pressure, the materials entering the pressure relief channel 6 from the material inlet 61 are discharged into the granular raw material bin 2 from the upper part of the highest storage level 7 of the granular raw material bin through the material outlet 62, so that the leakage of the materials is prevented.
As shown in fig. 2, the multistage rotary seal 5 includes a first-stage seal 51, the first-stage seal 51 is vertically attached to the outer side surface of the granular raw material bin 2, a rotary seal cover 50 is vertically engaged with the inner side surface of the first-stage seal 51, and the rotary seal cover 50 is fixedly mounted on the rotary shaft 1 in a manner of being matched with a bolt; the involution gap of the involution type toothed flange is ensured to be minimum by adopting the involution type toothed flange with high surface hardness, the first sealing is carried out by utilizing the processing precision of the involution type toothed flange, and meanwhile, the extrusion pressure of raw materials to the rotary sealing gap is blocked; a second-stage seal 52 is coaxially sleeved on one side, away from the granular raw material bin 2, of the first-stage seal 51, the outer side wall of the second-stage seal 52 is in contact with the inner side wall of the sleeve 3 and is a gap filtering seal, the second-stage seal 52 also ensures the sealing effect by means of machining precision, and meanwhile, the extrusion pressure of raw materials entering a subsequent seal is further eliminated; a third-stage seal 53 is coaxially sleeved on one side, far away from the first-stage seal 51, of the second-stage seal 52, the third-stage seal 53 is a soft-structure sealing material, and a sealing medium in the third-stage seal 53 can be embedded into or adsorb raw material particles entering the section of the granular raw material bin 2; a fourth-stage seal 54 and a fifth-stage seal 55 are sequentially arranged on one side, away from the second-stage seal 52, of the third-stage seal 53, and the fourth-stage seal 54 and the fifth-stage seal 55 are identical in structure and are both planar seals; the raw material particles brought into the third-stage seal 53 by the rotary seal are changed into radial plane extrusion seal in the moving direction when passing through the two sealing structures, so that the raw material particles are prevented from passing through the rotating surface of the rotating shaft 1 and bringing out of the shaft end to influence the sealing effect; meanwhile, when the particle raw material passes through the two seals, the leakage-free sealing effect is completely achieved on the rotary seal; the side, far away from the fourth stage seal 54, of the fifth stage seal 55 is coaxially sleeved with a sixth stage seal 56, the outer end of the sixth stage seal 56 is fixed through a pressing flange 4 in a matched mode through bolts, the sixth stage seal 56 further guarantees the previous fifth stage seal, and a sealing structure identical to the third stage seal 53 is adopted, so that the high sealing effect of the rotary seal is guaranteed.
In this embodiment, the medium of the granular raw material bin 2 to be sealed is: raw material particles with high hardness, particle diameter: 0.001mm-0.9mm, raw material water content: 28% -38% and has strong permeability. Through the raw materials storehouse of granule 2 both ends at rotation axis 1 middle part coaxial cup jointed multistage rotary seal 5, multistage rotary seal 5 is sealed including the first order that sets gradually, the second level is sealed 52, the third level is sealed 53, the fourth level is sealed 54, the fifth level is sealed 55 and the sixth level is sealed 56, and the sleeve compresses tightly in above-mentioned multistage rotary seal periphery, and fixed through flange, and sealed mutually support at different levels, with the rotatory clearance of avoiding rotary seal directly with the raw materials intercommunication in the raw materials storehouse of granule 2, thereby guarantee sealing performance.
Example 2
The basic structure of the multi-stage rotary seal for granular water-containing raw materials in the embodiment is the same as that in the embodiment 1, and the difference and the improvement are that: as shown in fig. 3, the upper parts of the fourth-stage seal 54 and the fifth-stage seal 55 are communicated with the granular raw material bin 2 through an external pressure relief channel 6, when the materials still permeate into the fourth-stage seal 54 and the fifth-stage seal (55) after the first-stage seal, the permeated materials can enter the pressure relief channel 6 from a material inlet 61, and then are discharged into the granular raw material bin 2 through a material outlet 62 due to the pressure, so as to remove residual materials adsorbed on the seals of each stage, and prevent the materials from entering the seals of the last stage.
Further, as shown in fig. 4 to 5, the fourth-stage seal 54 and the fifth-stage seal 55 have the same structure, and are respectively and fixedly installed on the outer wall of the rotating shaft 1 through a fixed static seal I541 and a fixed static seal I542; gaps I542 and I552 are respectively reserved between the surfaces of the fourth-stage seal 54 and the fifth-stage seal 55 and the inner side wall of the sleeve 3, when the rotating shaft 1 rotates, the fourth-stage seal 54 and the fifth-stage seal 55 can be fixed on the rotating shaft 1 and rotate together with the rotating shaft 1, raw material particles brought into the third-stage seal 53 through the rotating seal are subjected to radial plane extrusion sealing, and the moving direction of the raw material particles is changed into radial plane extrusion sealing when passing through the two sealing structures, so that the raw material particles are prevented from passing through the rotating surface of the rotating shaft and being brought out of the shaft end to influence the sealing effect; meanwhile, when the particle raw materials pass through the two seals, the leakage-free sealing effect is achieved on the rotary seal completely.
In this embodiment, the upper portions of the fourth seal 54 and the fifth seal 55 are communicated with the granular raw material bin 2 through an external pressure relief channel 6; when the material still permeates into the fourth-stage seal 54 and the fifth-stage seal 55 after the first several stages of seals, the permeated material can enter the pressure relief channel 6 from the material inlet, the end far away from the material inlet 61 is provided with a material outlet 62, the material outlet is externally connected to the outer side of the granular raw material bin, the height of the material outlet is higher than the highest storage height of the granular raw material bin 2 and is communicated with the granular raw material bin 2, and the material entering the pressure relief channel 6 from the material inlet 62 is discharged into the granular raw material bin 2 through the material outlet 62 under the action of pressure so as to remove residual material adsorbed on the seals of each stage and prevent the material from leaking due to the fact that the material enters the later several stages of seals.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (9)
1. A multi-stage rotary seal for particulate aqueous feedstock, characterized by: the particle material collecting device comprises a rotating shaft (1), wherein a particle raw material bin (2) is coaxially sleeved in the middle of the rotating shaft (1) along the circumferential direction of the rotating shaft; the opening of the granular raw material bin (2) above the rotating shaft (1) is closed, and the part below the opening is closed; the two ends of the contact part of the granular raw material bin (2) and the rotating shaft (1) are coaxially sleeved with multi-stage rotary seals (5) along the circumferential direction of the rotating shaft (1), and the outer ends of the multi-stage rotary seals (5) are fixed through compression flanges (4); the periphery of the multi-stage rotary seal (5) is coaxially sleeved with a sleeve (3), and the sleeve (3) is fixedly connected with the compression flange (4) through bolts; the particle raw material bin (2) at the upper part of the rotating shaft (1) is symmetrically provided with pressure relief channels (6) on the outer side surface, a material inlet (61) at the lower end of each pressure relief channel (6) is communicated with the multistage rotary seal (5) on the inner side of the sleeve (3), one end far away from the material inlet (61) is provided with a material outlet (62), and the material outlet (62) is externally connected to the outer side of the particle raw material bin (2) and is communicated with the particle raw material bin (2).
2. A multi-stage rotary seal for a particulate aqueous feedstock as claimed in claim 1 wherein: multistage rotary seal (5) are including first order seal (51), the vertical laminating of first order seal (51) is in the lateral surface in former feed bin of granule (2), the vertical meshing of first order seal (51) medial surface has rotatory sealed lid (50), rotatory sealed lid (50) cooperation bolt fixed mounting is on rotation axis (1).
3. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 2, wherein: the meshing part of the first-stage seal (51) and the rotary seal cover (50) is a butt-joint type toothed flange.
4. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 3, wherein: a second-stage seal (52) is coaxially sleeved on one side, far away from the granular raw material bin (2), of the first-stage seal (51), the outer side wall of the second-stage seal (52) is in contact with the inner side wall of the sleeve (3), and the second-stage seal is in gap filtering seal.
5. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 4, wherein: the second-stage seal (52) is far away from the third-stage seal (53) which is coaxially sleeved on one side of the first-stage seal (51), the third-stage seal (53) is a soft structure sealing material, and raw material particles entering the particle raw material bin (2) at the section can be embedded or adsorbed in a sealing medium in the third-stage seal (53).
6. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 5, wherein: and a fourth-stage seal (54) and a fifth-stage seal (55) are sequentially arranged on one side, away from the second-stage seal (52), of the third-stage seal (53), and the upper parts of the fourth-stage seal (54) and the fifth-stage seal (55) are communicated with the particle-separated raw material bin (2) through an external pressure relief channel (6).
7. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 6, wherein: the fourth-stage seal (54) and the fifth-stage seal (55) have the same structure, and are fixedly installed on the outer wall of the rotating shaft (1) through a fixed static seal I (541) and a fixed static seal I (542), respectively; gaps I (542) and I (552) are respectively reserved between the surfaces of the fourth-stage seal (54) and the fifth-stage seal (55) and the inner side wall of the sleeve (3).
8. A multi-stage rotary seal for particulate aqueous feed material as claimed in claim 7, wherein: and a sixth-stage seal (56) is coaxially sleeved on one side, far away from the fourth-stage seal (54), of the fifth-stage seal (55), and the outer end of the sixth-stage seal (56) is fixed through a pressing flange (4) in a matched mode of bolts.
9. A multi-stage rotary seal for a particulate aqueous feedstock as claimed in claim 8 wherein: the sixth stage seal (56) and the third stage seal (53) are identical in structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124653.2A CN112145694B (en) | 2020-10-20 | 2020-10-20 | Multistage rotary seal for granular water-containing raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124653.2A CN112145694B (en) | 2020-10-20 | 2020-10-20 | Multistage rotary seal for granular water-containing raw materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112145694A true CN112145694A (en) | 2020-12-29 |
| CN112145694B CN112145694B (en) | 2024-05-14 |
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| CN202011124653.2A Active CN112145694B (en) | 2020-10-20 | 2020-10-20 | Multistage rotary seal for granular water-containing raw materials |
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| CN208786866U (en) * | 2018-07-19 | 2019-04-26 | 江苏紫山食品科技有限公司 | Food multi-stage oscillating screen |
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| CN110925510A (en) * | 2019-12-12 | 2020-03-27 | 陕西航天机电环境工程设计院有限责任公司 | Sealing connection device used between rotating pipe and fixed pipe |
| CN210240555U (en) * | 2019-07-19 | 2020-04-03 | 四川大禹机械密封件制造有限公司 | Mechanical seal of particulate matter-containing raw material delivery pump |
| CN213419883U (en) * | 2020-10-20 | 2021-06-11 | 马鞍山齐力机电设备有限公司 | Multistage rotary seal for granular water-containing raw materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4504389A (en) * | 1983-01-17 | 1985-03-12 | Associated Mills, Inc. | Water filter |
| JPH08103800A (en) * | 1994-10-05 | 1996-04-23 | Kikoushiya:Kk | Treating device for dredged sludge |
| CN107971232A (en) * | 2016-10-21 | 2018-05-01 | 乐山新天源太阳能科技有限公司 | Grading plant for granular material |
| CN106678371A (en) * | 2017-03-03 | 2017-05-17 | 四川日机密封件股份有限公司 | Dry gas sealing device of long-distance pipeline natural gas compressor |
| CN208786866U (en) * | 2018-07-19 | 2019-04-26 | 江苏紫山食品科技有限公司 | Food multi-stage oscillating screen |
| CN110043669A (en) * | 2019-04-04 | 2019-07-23 | 沈阳航空航天大学 | Can between dynamic governing stage lack of uniformity two-stage brush seal structure |
| CN210240555U (en) * | 2019-07-19 | 2020-04-03 | 四川大禹机械密封件制造有限公司 | Mechanical seal of particulate matter-containing raw material delivery pump |
| CN110925510A (en) * | 2019-12-12 | 2020-03-27 | 陕西航天机电环境工程设计院有限责任公司 | Sealing connection device used between rotating pipe and fixed pipe |
| CN213419883U (en) * | 2020-10-20 | 2021-06-11 | 马鞍山齐力机电设备有限公司 | Multistage rotary seal for granular water-containing raw materials |
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| CN112145694B (en) | 2024-05-14 |
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