Sealing structure for stirring device for easily-solidified high-concentration iron phosphate solution

Abstract

The utility model relates to a sealing structure for an easy-to-solidify high-concentration iron phosphate solution stirring device, and belongs to the technical field of waste battery recovery. The stirring shaft is installed in the bearing seat shell through the self-aligning roller bearing, the bearing end cover is installed on the outer end face of the bearing seat shell, the mechanical seal is installed between the bearing seat shell and the stirring shaft and located on the inner side of the self-aligning roller bearing, the stuffing box is embedded in one end of the inner side of the bearing seat shell, and the stirring shaft is sleeved with the sealing shaft sleeve through the sealing ring. The stuffing box and the sealing shaft sleeve are filled with teflon packing, and a packing cover for pressing the teflon packing is mounted on the inner end face of the bearing seat shell; teflon packing is adopted as a sealing structure, the abrasion resistance is good, the teflon packing has good plasticity, after abrasion, the teflon packing has certain deformation springback capacity for further sealing, the sealing performance is good, the replacement period is long, and the cost is low; the sealing shaft sleeve is used for protecting the stirring shaft from being abraded, and is replaced after being abraded, so that the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste battery recycling technical field, concretely relates to a sealing structure for easily solidified high concentration iron phosphate solution stirring device. BACKGROUND

[0002] The stirring device of high concentration iron phosphate solution, the device transports heat source and is used for concentration stirring of iron phosphate solution, the stirring container is installed horizontally, and the stirring device transversely penetrates the container. The container and the stirring device are provided with bearing seats at both ends, the bearing seat contains a sealing structure inside. One end is a reducer output end, and the other end is a heat source input end. The heat source input end provides hot water > 70 DEG C, and the internal negative pressure of the stirring container is less than -60 KPa.

[0003] The concentrated material is iron phosphate solution, and the strong acid crystallization object is easily solidified. The crystallization object has high hardness and is difficult to clean. The generated crystallization object causes component wear, material leakage through the wear gap, and final damage to the rear part components. The structure is prone to damage, the service period is short (less than 1 week), the maintenance cost is high, the stirring shaft 7 is difficult to maintain and has high cost after wear, and the entire structure is prone to leakage and cannot be used. SUMMARY

[0004] In order to overcome the problems of the crystallization object causing component wear, material leakage through the wear gap, and final damage to the rear part components in the background technology, the utility model provides a sealing structure for easily solidified high concentration iron phosphate solution stirring device, which adopts tetrafluoro filler 9 as the sealing structure, has good wear resistance, good plasticity, certain deformation rebound ability for further sealing after wear, good sealing performance, long replacement cycle, low daily maintenance difficulty, and low cost. The sealing shaft sleeve 10 is used for protecting the wear of the stirring shaft 7. If the sealing shaft sleeve 10 is worn, the sealing shaft sleeve 10 can be replaced, which is low in cost and simple in maintenance.

[0005] In order to achieve the above object, the utility model is through following technical scheme realizes: a kind of sealing structure for easily solidified high concentration iron phosphate solution stirring device mainly includes bearing end cover 1, self-aligning roller bearing 2, bearing seat shell 3, mechanical seal 4, stirring shaft 7, stuffing box 8, tetrafluoro stuffing 9, sealing sleeve 10, stuffing cover 11, pedestal flange 13, the stirring shaft 7 is installed in bearing seat shell 3 by self-aligning roller bearing 2, bearing seat shell 3 is installed on the pedestal flange 13 of jar body, bearing end cover 1 is installed on the outer end surface of bearing seat shell 3, mechanical seal 4 is installed between bearing seat shell 3 and stirring shaft 7, mechanical seal 4 is at the inside of self-aligning roller bearing 2, one end of bearing seat shell 3 inside is embedded with stuffing box 8, sealing sleeve 10 is sleeved on stirring shaft 7 by sealing ring, stuffing box 8 and sealing sleeve 10 will be filled with tetrafluoro stuffing 9, bearing seat shell 3 inner end surface is installed with the stuffing cover 11 of tetrafluoro stuffing 9 compression.

[0006] Further, the bearing seat shell 3 and the stuffing box 8 are sealed by a sealing ring.

[0007] Further, the sealing sleeve 10 and the stirring shaft 7 are sealed by a sealing ring.

[0008] Further, the stuffing cover 11 is provided with a compression part that can extend into the stuffing box 8 to compress the tetrafluoro stuffing 9, and the stuffing cover 11 is connected to the stuffing box 8 by bolts.

[0009] Further, a gap of 2 to 5 mm is left between the stuffing box 8 and the bearing seat shell 3 to form a flushing box 12, and the bearing seat shell 3 is provided with an inlet and an outlet on the upper and lower sides respectively.

[0010] The utility model has the advantages of:

[0011] The utility model uses tetrafluoro stuffing as the sealing structure, which has good wear resistance, good plasticity, certain deformation and rebounding ability after wear for further sealing, good sealing performance, long replacement cycle, low difficulty in daily maintenance and low cost. The sealing sleeve is used to protect the stirring shaft from wear, and the sealing sleeve can be replaced when it is worn out, which is low in cost and easy to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the sectional view of the utility model.

[0013] Figure 2 is the sectional view of the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and beneficial effects of the utility model clearer, the preferred embodiments of the utility model will be described in detail below with reference to the drawings, so as to facilitate the understanding of the technical personnel.

[0015] This utility model discloses a sealing structure for a stirring device of easily curable high-concentration ferric phosphate solution. The sealing structure mainly includes a bearing end cap 1, a self-aligning roller bearing 2, a bearing housing 3, a mechanical seal 4, a stirring shaft 7, a stuffing box 8, PTFE packing 9, a sealing bushing 10, a packing cover 11, and a base flange 13. The stirring shaft 7 is mounted inside the bearing housing 3 via the self-aligning roller bearing 2. The bearing housing 3 is mounted on the base flange 13 of the tank body. The bearing end cap 1 is mounted on the outer end face of the bearing housing 3. A mechanical seal 4 is installed between the bearing housing 3 and the stirring shaft 7, and the mechanical seal 4 is self-aligning. A stuffing box 8 is embedded in one end of the inner side of the roller bearing 2 and the bearing housing 3. A sealing sleeve 10 is fitted onto the stirring shaft 7 via a sealing ring. The stuffing box 8 and the sealing sleeve 10 are filled with PTFE packing 9. A packing cap 11 is installed on the inner end face of the bearing housing 3 to press the PTFE packing 9. PTFE packing 9 is used as the sealing structure because it has good wear resistance and good plasticity. After wear, it has a certain deformation and rebound ability to further seal, resulting in good sealing performance, long replacement cycle, low daily maintenance difficulty, and low cost. The sealing sleeve 10 is used to protect the stirring shaft 7 from wear. If the sealing sleeve 10 wears out, it can be replaced, resulting in low cost and simple maintenance. The PTFE packing 9 has good plasticity and will not cause large gaps due to the large radial runout of the stirring shaft 7, preventing material from entering. Simultaneously, the solidified crystals produced provide good protection against wear on the PTFE packing 9 and the sealing sleeve 10, allowing for weekly tightening of the PTFE packing 9. The deformation generated during tightening can fill the resulting wear gaps. The wear of the PTFE packing 9 and the sealing bushing 10 only requires periodic replacement.

[0016] Due to the characteristics of ferric phosphate, materials containing carbon elements cannot be used to contact the material. PTFE packing has high wear resistance and acid / alkali resistance. This invention mainly uses PTFE packing 9 as the sealing structure for this material. The sealing bushing 10 is used to protect the agitator shaft 7 from wear. Compared with PTFE sleeves, PTFE sleeves have higher processing costs, poorer wear resistance, are not easy to replace, and have poor plasticity, forming gaps after wear. PTFE packing 9 has lower processing and maintenance costs, better sealing performance, better plasticity, and a certain deformation and rebound ability after wear for further sealing, resulting in better sealing performance and a longer replacement cycle.

[0017] In this embodiment, the bearing housing 3 and the stuffing box 8 are sealed by a sealing ring.

[0018] In this embodiment, the sealing bushing 10 and the stirring shaft 7 are sealed by a sealing ring.

[0019] In this embodiment, the packing cover 11 is provided with a pressing part that can extend into the stuffing box 8 to press the PTFE packing 9. The packing cover 11 and the stuffing box 8 are connected by bolts. After a period of use, the packing cover 11 can be further pressed to press the PTFE packing 9 by adjusting the bolts. The tightening of the PTFE packing can fill the gap caused by the wear between the PTFE packing and the sealing bushing, eliminating the need to disassemble and replace the seal, thus improving service life and reducing maintenance costs.

[0020] In this embodiment, a 2-5mm gap is left between the stuffing box 8 and the bearing housing 3 to form a flushing box 12. The bearing housing 3 has an inlet and an outlet on its upper and lower sides, respectively. When slurry 14 leaks into the internal flow channel from the PTFE packing 9, the cleaning medium in the flushing box cleans the slurry in that flow channel. This ensures that the leaking slurry is flushed out by the cleaning medium, preventing it from further entering the rear mechanical seal and extending the service life of the mechanical seal.

[0021] Work process:

[0022] The sealing structure uses PTFE packing 9, which has good wear resistance and good plasticity. After wear, PTFE packing 9 has a certain deformation and rebound ability to further seal, resulting in good sealing performance, long replacement cycle, low daily maintenance difficulty, and low cost. The sealing sleeve 10 is used to protect the agitator shaft 7 from wear. If the sealing sleeve 10 wears out, it can be replaced, which is low-cost and simple to maintain. After a period of use, the packing cover 11 can be adjusted by adjusting the bolts to further tighten the PTFE packing 9. The tightening of the PTFE packing can fill the gap caused by wear between the PTFE packing and the sealing sleeve, eliminating the need to disassemble and replace the seal, thus improving service life and reducing maintenance costs. The PTFE packing 9 has good plasticity and will not cause large gaps due to the large radial runout of the agitator shaft 7, preventing material from entering. At the same time, the solidified crystals produced provide good protection against wear on the PTFE packing 9 and the sealing sleeve 10, allowing the PTFE packing 9 to be tightened once a week. The deformation caused by tightening the packing can fill the wear gaps. Wear on the PTFE packing 9 and the sealing sleeve 10 only requires periodic replacement.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A sealing structure for a stirring device for easily curable high-concentration ferric phosphate solution, characterized in that: The sealing structure for the stirring device of easily curable high-concentration ferric phosphate solution includes a bearing end cap (1), a self-aligning roller bearing (2), a bearing housing (3), a mechanical seal (4), a stirring shaft (7), a stuffing box (8), PTFE packing (9), a sealing bushing (10), a packing cover (11), and a base flange (13). The stirring shaft (7) is installed in the bearing housing (3) through the self-aligning roller bearing (2). The bearing housing (3) is installed on the base flange (13) of the tank body. The bearing end cap (10) 1) Installed on the outer end face of the bearing housing (3), a mechanical seal (4) is installed between the bearing housing (3) and the stirring shaft (7). The mechanical seal (4) is located inside the self-aligning roller bearing (2). A stuffing box (8) is embedded at one end of the inner side of the bearing housing (3). The sealing sleeve (10) is fitted onto the stirring shaft (7) through a sealing ring. The stuffing box (8) and the sealing sleeve (10) will be filled with PTFE packing (9). A packing cap (11) that presses the PTFE packing (9) is installed on the inner end face of the bearing housing (3).

2. The sealing structure for a stirring device for easily curable high-concentration ferric phosphate solution as described in claim 1, characterized in that: The bearing housing (3) and the stuffing box (8) are sealed by a sealing ring.

3. A sealing structure for a stirring device for easily curable high-concentration ferric phosphate solution as described in claim 1 or 2, characterized in that: The sealing bushing (10) and the stirring shaft (7) are sealed by a sealing ring.

4. The sealing structure for a stirring device for easily curable high-concentration ferric phosphate solution as described in claim 3, characterized in that: The packing cover (11) is provided with a pressing part that can extend into the stuffing box (8) to press the PTFE packing (9). The packing cover (11) and the stuffing box (8) are connected by bolts.

5. The sealing structure for a stirring device for easily curable high-concentration ferric phosphate solution as described in claim 3, characterized in that: The stuffing box (8) and the bearing housing (3) are separated by a gap of 2 to 5 mm to form a flushing box (12). The bearing housing (3) has an inlet and an outlet on the upper and lower sides respectively.

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