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Multi-stage rotary seal for granular water-containing raw materials

A technology of rotary sealing and particles, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as difficult rotary sealing, and achieve the effects of ensuring sealing performance, increasing friction, and increasing contact pressure

Pending Publication Date: 2020-12-29
MAANSHAN QILI ELECTRICAL & MECHANICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems such as the difficulty of shaft rotary seals for raw materials containing water, the present invention designs a multi-stage rotary seal for granular water-containing raw materials. By coaxially connecting the two ends of the granular raw material warehouse in the middle of the rotating shaft, there are multiple stages of rotary seals. It is sealed and fixed by the compression flange. The middle part of the sleeve is connected with a pressure relief channel along its radial direction. When the material penetrates into the multi-stage rotary seal, the material entering the pressure relief channel from the material inlet passes through the material The outlet is discharged into the granular raw material bin, thereby preventing the leakage of the material

Method used

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  • Multi-stage rotary seal for granular water-containing raw materials
  • Multi-stage rotary seal for granular water-containing raw materials
  • Multi-stage rotary seal for granular water-containing raw materials

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of multi-stage rotary seal used for granular water-containing raw materials in this embodiment, such as figure 1 As shown, it includes a rotating shaft 1. The middle part of the rotating shaft 1 is coaxially sleeved with a granular material bin 2 along its circumferential direction. The upper end of the granular raw material bin 2 is open and the bottom is sealed. The contact between the granular raw material bin 2 and the rotating shaft 1 The two ends are coaxially sleeved with a multi-stage rotary seal 5 along the circumference of the rotating shaft 1, and a sleeve 3 is coaxially sleeved on the outer periphery of the multi-stage rotary seal 5, and the gap between the sleeve 3 and the compression flange 4 is The sleeve 3 is pressed tightly on the outer periphery of the multi-stage rotary seal 5 by bolts, thereby increasing the contact pressure between the multi-stage rotary seal 5 and the rotating shaft 1, thereby increasing the friction force, ensuring the seali...

Embodiment 2

[0036] A kind of multi-stage rotary seal used for granular water-containing raw materials of this embodiment has the same basic structure as that of Embodiment 1, the differences and improvements are as follows: image 3 As shown, the top of the fourth-stage seal 54 and the fifth-stage seal 55 communicates with the granular raw material bin 2 through the external pressure relief channel 6. After the material is sealed in the previous stages, it still penetrates into the fourth-stage seal. 54 and the fifth-stage seal (55), the infiltrated material can enter the pressure relief passage 6 from the material inlet 61, and due to the effect of pressure, the material is discharged into the granular raw material bin 2 through the material outlet 62 to remove The residual material adsorbed on the seals at all levels prevents the material from entering the subsequent seals.

[0037] Further, such as Figure 4~5 As shown, the fourth-stage seal 54 and the fifth-stage seal 55 have the sam...

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Abstract

The invention discloses a multi-stage rotary seal for granular water-containing raw materials, and belongs to the technical field of rotary seals of granular materials. The multi-stage rotary seal forthe granular water-containing raw materials comprises a rotating shaft, wherein a granular raw material bin is coaxially arranged in the middle of the rotating shaft in a sleeved mode in the circumferential direction of the rotating shaft; multi-stage rotary seals are coaxially arranged at the two ends of the contact position of the granular raw material bin and the rotating shaft in a sleeved mode in the circumferential direction of the rotating shaft; the outer circumferential faces of the multi-stage rotary seals are pressed through sleeves and fixed through compact flanges, so that a rotary gap of the rotary seal is prevented from being directly communicated with raw materials in the granular raw material bin through, and the sealing performance is guaranteed; and pressure relief channels are symmetrically arranged in the outer side face of the granular raw material bin on the upper part of the rotating shaft, so that materials entering the pressure relief channels from material inlets are discharged into the granular raw material bin from the upper part through material outlets, the residual materials adsorbed to all the stages of seals are removed, and the material leakage caused by the fact that the materials enter the later stages of seals is prevented.

Description

technical field [0001] The invention relates to the technical field of rotary seals for granular materials, in particular to a multi-stage rotary seal for granular water-containing raw materials. Background technique [0002] For pumps containing granular materials, the pressure of the external flushing water is required to be greater than that of the sealing medium, otherwise the sealing medium may seep into the sealing ring behind the static ring to deposit or crystallize, resulting in the static ring being stuck and the compensation spring unable to push the static ring , causing the seal to fail; in addition, the water-containing raw material has strong permeability, because the rotating gap of the rotary seal is directly connected with the raw material, so the sealing is particularly difficult. To ensure its sealing performance, it requires a special sealing structure. [0003] The shaft seal device of rotating machinery, such as centrifugal pumps, centrifuges, reactors...

Claims

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Application Information

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IPC IPC(8): F16J15/16F16J15/54
CPCF16J15/16F16J15/164F16J15/168F16J15/54
Inventor 罗晓峰王国华汪城杨俊王文杰
Owner MAANSHAN QILI ELECTRICAL & MECHANICAL EQUIP CO LTD