A wear-resistant sleeve for tail slag discharge of a vertical digestion slag extractor

Abstract

The utility model relates to papermaking alkali recovery causticizing residue extracting machine spare part technical field, concretely is a kind of wear-resistant sleeve for vertical digestion residue extracting machine tail residue, including wear-resistant sleeve body, the wear-resistant sleeve body includes shaft sleeve and gland, the shaft sleeve and gland staggered and are inserted together.The utility model provides a kind of wear-resistant sleeve for vertical digestion residue extracting machine tail residue, by shaft sleeve and gland cooperation, the pressure of dispersion shaft to shaft sleeve, improve the overall wear resistance of shaft sleeve, prolong service life, compared with conventional shaft sleeve service life is prolonged at least 3 times, reduce the replacement frequency of shaft sleeve, greatly reduce production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of parts for papermaking alkali recovery and causticizing slag extraction machines, and in particular to a wear-resistant sleeve for the tail end of a vertical digestion slag extraction machine. Background Technology

[0002] In the alkali recovery section of papermaking, a digestion tank and a slag remover work together. The digestion tank treats the green liquor (a solution containing sodium carbonate), and by adding lime, a digestion reaction is carried out to produce caustic soda and calcium carbonate, thus achieving the recovery and utilization of chemical substances. The slag remover separates impurities such as stones, sand, and metals from the digested emulsion.

[0003] Currently, in existing technologies, during the operation of a slag lifter, the auger rotates continuously. Due to gravity, the bushing at the tail of the shaft experiences uneven stress over time; the lower part of the bushing experiences greater stress, while the upper part experiences less. The lower part of the bushing, especially at the very bottom, suffers severe damage over time, eventually becoming unusable. Typically, the bushings in existing structures need to be replaced every 3-5 months, which not only affects the work process but also increases production costs because damaged bushings cannot be repaired.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide a wear-resistant sleeve for the tail discharge of a vertical digester and slag extractor, thereby solving the problem of severe wear and frequent replacement of the bushing on the rotating shaft in the prior art.

[0006] To achieve the above objectives, this utility model provides a wear-resistant sleeve for the tail discharge of a vertical digester, comprising a wear-resistant sleeve body, wherein the wear-resistant sleeve body includes a bushing and a pressure cap, the bushing and the pressure cap being interlocked together.

[0007] As a preferred technical solution, three bushing protrusions are provided at equal angles on one side of the bushing, and bushing grooves are formed between adjacent bushing protrusions; three pressure cap protrusions are provided on the inner side of the pressure cap, arranged circumferentially at equal angles, and pressure cap grooves are formed between adjacent pressure cap protrusions; the pressure cap protrusions are inserted into the bushing grooves, and the bushing protrusions are inserted into the pressure cap grooves.

[0008] As a preferred technical solution, the three bushing protrusions are located at the 0°, 120°, and 240° positions of the bushing, respectively.

[0009] As a preferred technical solution, the bushing is disposed in the bushing chamber inside the support housing, one end of the support housing is connected to a detachable pressure cap, and the other end is connected to a fixed seat; a rotatable shaft is disposed and installed inside the bushing.

[0010] As a preferred technical solution, the support housing and the pressure cover, as well as the support housing and the fixed base, are detachable connections.

[0011] As a preferred technical solution, a pressure cover sealing gasket is provided between the pressure cover and the support housing; a bearing chamber sealing gasket is provided between the support housing and the fixed seat.

[0012] As a preferred technical solution, the wear-resistant sleeve is detachably installed at the tail end of the slag lifter, and is located at the end away from the discharge port of the slag lifter; the slag lifter is connected to the digestion cylinder.

[0013] This utility model provides a wear-resistant sleeve for the tail discharge of a vertical digester and slag extractor. By cooperating with the sleeve and the pressure cap, the pressure of the rotating shaft on the sleeve is dispersed, thereby improving the overall wear resistance of the sleeve and extending its service life. The service life is extended by at least 3 times compared with conventional sleeves, reducing the frequency of sleeve replacement and greatly reducing production costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the installation position of the wear-resistant sleeve for the tail discharge of the vertical digester and slag remover of this utility model.

[0015] Figure 2 for Figure 1 Top view;

[0016] Figure 3 Exploded view of the wear-resistant sleeve installation;

[0017] Figure 4 This is a sectional view of the installation position of the wear-resistant sleeve.

[0018] Figure 5 This is a structural diagram of one side of the gland;

[0019] Figure 6 This is a schematic diagram of the gland structure;

[0020] Figure 7 This is a cross-sectional view of the gland;

[0021] Figure 8 This is a sectional view of the bushing;

[0022] Figure 9 This is a schematic diagram of the bushing structure;

[0023] In the picture:

[0024] 1-Digestion cylinder, 2-Residue lifter, 3-Wear-resistant sleeve, 31-Pressure cap, 311-Pressure cap protrusion, 312-Pressure cap groove, 32-Pressure cap sealing gasket, 33-Support housing, 331-Bearing chamber, 34-Shaft sleeve, 341-Shaft sleeve protrusion, 342-Shaft sleeve groove, 35-Bearing chamber sealing gasket, 36-Fixed seat, 37-Rotating shaft. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0026] Example 1:

[0027] See Figure 1 and Figure 2 This utility model provides a wear-resistant sleeve for the tail discharge of a vertical digester 2, including a wear-resistant sleeve body 3. The wear-resistant sleeve body 3 is detachably installed at the tail end of the digester 2 and is located at the end away from the discharge port of the digester 2. The digester 2 is connected to a digestion cylinder 1, and the digested emulsion in the digestion cylinder 1 is discharged through the digestion cylinder 1.

[0028] The wear-resistant sleeve 3 is detachably mounted on the slag remover 2 by bolts. For details, see [link to documentation]. Figures 4 to 5 The wear-resistant sleeve 3 includes a bushing 34 and a pressure cap 31, which are interlocked.

[0029] Further, see Figure 8 and Figure 9 The bushing 34 has three bushing protrusions 341 at equal angles on one side, and bushing grooves 342 are formed between adjacent bushing protrusions 341. The three bushing protrusions 341 and the three bushing grooves 342 are arranged alternately and connected end to end on one side end face of the bushing 34.

[0030] See Figure 6 and Figure 7 The inner side of the pressure cover 31 is provided with three pressure cover protrusions 311 arranged circumferentially at equal angles, and pressure cover grooves 312 are formed between adjacent pressure cover protrusions 311. The three pressure cover protrusions 311 and the three pressure cover grooves 312 are arranged alternately and connected end to end on the inner side of the pressure cover 31.

[0031] The bushing protrusion 341 and bushing groove 342 of the bushing 34 are adapted to the pressure cap protrusion 311 and pressure cap groove 312 on the pressure cap 3, so that the pressure cap 31 and the bushing 34 are tightly connected together. Furthermore, the pressure cap protrusion 311 is inserted into the bushing groove 342, and the bushing protrusion 341 is inserted into the pressure cap groove 312.

[0032] See Figures 3 to 5 The bushing 34 is disposed within the bushing chamber 331 inside the support housing 33. One end of the support housing 33 is connected to a detachable pressure cap 31, and the other end is connected to a fixing seat 36. The fixing seat 36 is provided with a through hole for the rotating shaft 37 to pass through. The support housing 33 and the pressure cap 31, and the support housing 33 and the fixing seat 36 are detachably connected by bolts. A pressure cap sealing gasket 32 ​​is provided between the pressure cap 31 and the support housing 33. A bearing chamber sealing gasket 35 is provided between the support housing 33 and the fixing seat 36.

[0033] A rotatable shaft 37 is installed inside the bushing 34, and the shaft 37 extends and connects both ends of the entire slag remover 2.

[0034] A sealing ring is provided between the support housing 33 and the fixed base 36. One end of the sealing ring abuts against the bushing 34 and the other end abuts against the fixed base 36.

[0035] Because the three bushing protrusions 341 on the bushing 34 are set at equal angles, they are located at 0°, 120°, and 240° positions on the bushing 34, respectively. The gland protrusion 311 is inserted into the bushing groove 342, and the bushing protrusion 341 is inserted into the gland groove 312. During installation, one bushing protrusion 341 on one of the bushings 34 is first positioned at the bottom of the circumference. After the rotating shaft 37 inside the bushing 34 has been working for a period of time (4-6 months), the bolts between the support housing 33 and the gland 31 can be removed, and the gland 31 can be rotated 120° to position the other bushing protrusion 341 at the bottom. This process is repeated, with the three bushing protrusions 341 sequentially positioned at the bottom, dispersing the force on the rotating shaft 37 on the bushing 34. This improves the overall wear resistance of the bushing 34, extends its service life by at least three times compared to conventional bushings, reduces the replacement frequency of the bushing 34, and thus reduces production costs.

[0036] This utility model provides a wear-resistant sleeve for the tail discharge of a vertical digester and slag extractor. By cooperating with the sleeve and the pressure cap, the pressure of the rotating shaft on the sleeve is dispersed, thereby improving the overall wear resistance of the sleeve and extending its service life. The service life is extended by at least 3 times compared with conventional sleeves, reducing the frequency of sleeve replacement and greatly reducing production costs.

[0037] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor, characterized in that, It includes a wear-resistant sleeve (3), which includes a bushing (34) and a gland (31), which are interlocked together.

2. The wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 1, characterized in that, The bushing (34) has three bushing protrusions (341) arranged at equal angles on one side, and bushing grooves (342) are formed between adjacent bushing protrusions (341); the inner side of the cover (31) has three cover protrusions (311) arranged circumferentially at equal angles, and cover grooves (312) are formed between adjacent cover protrusions (311); the cover protrusions (311) are inserted into the bushing grooves (342), and the bushing protrusions (341) are inserted into the cover grooves (312).

3. The wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 2, characterized in that, The three bushing protrusions (341) are located at the 0°, 120° and 240° positions of the bushing (34), respectively.

4. The wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 2, characterized in that, The bushing (34) is located in the bushing chamber (331) inside the support housing (33). One end of the support housing (33) is connected to a detachable pressure cap (31), and the other end is connected to a fixed seat (36). A rotatable shaft (37) is installed inside the bushing (34).

5. A wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 4, characterized in that, The support housing (33) and the pressure cover (31) are detachably connected, as are the support housing (33) and the fixed base (36).

6. A wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 4, characterized in that, A pressure cover sealing gasket (32) is provided between the pressure cover (31) and the support housing (33); a bearing chamber sealing gasket (35) is provided between the support housing (33) and the fixed seat (36).

7. A wear-resistant sleeve for the tail end discharge of a vertical digester and slag extractor according to claim 1, characterized in that, The wear-resistant sleeve (3) is detachably installed at the tail end of the slag lifter (2) and is located away from the discharge port of the slag lifter (2); the slag lifter (2) is connected to the digester cylinder (1).

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