Dismounting device for automatic control valve of dissolving pulp digester
By designing a disassembly device for the automatic control valve of the dissolving slurry cooker, and utilizing a circular plate and semi-circular plate structure and a hydraulic puller, the problem of seal damage during disassembly was solved, achieving safe and efficient disassembly of the automatic control valve and extending its service life.
Patent Information
- Application Number
- CN202422554779.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the existing technology, the valve seals are easily damaged when disassembling the automatic control valve of the dissolving slurry cooker, resulting in poor sealing performance and scrapping, and it is impossible to effectively disassemble and clean the scale.
Design a disassembly device comprising a circular plate and a semi-circular plate, which is fixed by fastening bolts and limit rods, and uses a hydraulic puller to push out the housing of the self-control valve, avoiding deformation by knocking and achieving safe disassembly.
It effectively protects the integrity of the seals, extends the service life of the automatic control valve, reduces the scrap rate, and improves disassembly efficiency.
Smart Images
Figure CN223573087U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of maintenance tools, and specifically relates to a dismounting device for the self-control valve of a dissolving pulp digester. BACKGROUND
[0002] Dissolving pulp, also known as pulp, is an important raw material in the papermaking industry, and its main components are lignin, hemicellulose, extractives, minerals, and other components with very low content, with a cellulose content of 90%~98%, high whiteness, uniform cellulose molecular weight distribution, and good reaction performance. The preparation of dissolving pulp includes a cooking process, which aims to penetrate the alkali solution into the raw material, dissolve pectin, waxes, part of the hemicellulose, and a small amount of lignin from the raw material, dissolve the intercellular lignin, and dissolve the lignin in the cell wall.
[0003] The cooking process of dissolving pulp uses a special batch digester, and each set of digester has three self-control valves. Because the hydrolysis liquid contains inorganic alkali and sulfate, scaling occurs frequently during production, causing frequent valve opening and closing jams. On average, each self-control valve needs to be disassembled and cleaned 3~4 times per year. During cleaning, the self-control valve seal seat must be removed for thorough cleaning. The traditional disassembly method is to knock the edge of the seal seat to make it separate from the digester body. However, long-term knocking causes the seal seat to deform severely. Because the deformation of the seal seat causes poor sealing, it eventually cannot be used and must be scrapped, causing irreparable losses. Therefore, a device specifically designed for disassembling self-control valves is needed to solve the above problems. SUMMARY
[0004] In view of the problem of damaging the self-control valve when disassembling the self-control valve of the digester in the prior art, the utility model provides a dismounting device for the self-control valve of a dissolving pulp digester to solve the above problems.
[0005] The utility model technical scheme is as follows:
[0006] A dismounting device for the self-control valve of a dissolving pulp digester, comprising a circular plate, two through holes one are symmetrically arranged on the circular plate, two half circular plates are arranged below the circular plate, through holes two are arranged on the half circular plates, fastening bolts are penetrated through the through holes one and the through holes two, the fastening bolts are provided with nuts for fixing the circular plate and the half circular plates together, and the edges of the half circular plates are in a stepped shape.
[0007] Further, the half circular plates are provided with round holes on the plane sides, limit rods are inserted into the round holes, and the side surfaces of the two half circular plates are connected through the limit rods. In this way, the half circular plates can be prevented from rotating around the fastening bolts after installation.
[0008] Further, the round hole and the limiting rod are both provided with two, so that the firmness of the device can be increased.
[0009] Further, the through hole is a long strip hole, so that the position of the semicircular plate below the circular plate can be adjusted after assembly to adapt to the disassembly of self-control valves of different sizes.
[0010] Further, the limiting rod is a double-headed bolt provided with two; each double-headed bolt is respectively screwed with a limiting nut, and the two limiting nuts are respectively in abutment with different semicircular plates. The limiting nut is screwed behind the double-headed bolt, so that the relative displacement of the two semicircular plates can be limited, thereby playing a limiting role.
[0011] Further, in the disassembly device, the diameter of the circular plate is 174mm; and the maximum diameter of the two semicircular plates is 205mm.
[0012] The beneficial effects of the utility model lie in:
[0013] The disassembly device of the self-control valve of the dissolving pulp cooking pot provided by the utility model is a device specially used for disassembling a tank mouth, and solves the problem that the existing disassembly self-control valve can only be disassembled by knocking. Moreover, the utility model can also be applied to the loading and unloading of other kettle devices. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying the creative labor.
[0015] Figure 1 Structure diagram of the utility model Figure 1 .
[0016] Figure 2 Structure diagram of the utility model Figure 2 .
[0017] Figure 3 Front view of the utility model.
[0018] Figure 4 Right view of the utility model.
[0019] Figure 5 Top view of the circular plate of the utility model.
[0020] Figure 6 Bottom view of the semicircular plate of the utility model.
[0021] Figure 7 Rear view of the semicircular plate of the utility model.
[0022] Figure 8 The utility model discloses installation schematic drawing.
[0023] In the figure, 1 is a round plate, 2 is a half round plate, 3 is a fastening bolt, 4 is a nut, 5 is a double-headed bolt, 6 is a limiting nut, 7 is a through hole one, 8 is a through hole two, 9 is a round hole, 10 is a self-control valve shell, 11 is a cooking pot shell, 12 is a sealing ring. DETAILED DESCRIPTION
[0024] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.
[0025] Embodiment 1
[0026] A kind of dismounting device for dissolving pulp cooking pot self-control valve, including round plate 1;Two through holes one 7 are symmetrically provided on the round plate 1;Two half round plates 2 are arranged below the round plate 1;Through hole two 8 are provided on the half round plate 2;Fastening bolt 3 is penetrated in the through hole one 7 and through hole two 8;The fastening bolt 3 is equipped with nut 4, for fixing the round plate 1 and half round plate 2 together;The edge of the half round plate 2 is in echelon shape;The diameter of the round plate is 174mm;The diameter of two half round plates after assembly is 205mm.
[0027] Embodiment 2
[0028] A kind of dismounting device for dissolving pulp cooking pot self-control valve, including round plate 1;Two through holes one 7 are symmetrically provided on the round plate 1;The through hole one 7 is long hole;Two half round plates 2 are arranged below the round plate 1;Through hole two 8 are provided on the half round plate 2;Fastening bolt 3 is penetrated in the through hole one 7 and through hole two 8;The fastening bolt 3 is equipped with nut 4, for fixing the round plate 1 and half round plate 2 together;The edge of the half round plate 2 is in echelon shape;Two round holes 9 are provided on the plane side of the half round plate 2;Double-headed bolt 5 is inserted in each round hole 9;The double-headed bolt 5 is screw-connected with limiting nut 6, and two limiting nuts 6 are respectively in abutment with different half round plates 2;The side of two half round plates 2 is connected by double-headed bolt 5;The diameter of the round plate is 174mm;The diameter of two half round plates after assembly is 205mm.
[0029] As Figure 8As shown, the working principle of the utility model is: before the automatic control valve of the dissolving pulp digester is disassembled, the disassembling device is assembled. First, the semicircular plate 2 is assembled according to the size of the automatic control valve shell 10, and is placed in the automatic control valve core, the limiting nut 6 can be rotated to the appropriate position for limiting; then the circular plate 1 is placed above the semicircular plate 2, the fastening bolt 3 is passed through the through hole one 7 and the through hole two 8, and then is fixed with the nut 4. Finally, the automatic control valve shell 10 is pulled out upwardly by using the hydraulic puller, the automatic control valve shell 10 is separated from the digester shell 11, the sealing ring 12 can also be guaranteed intact, and the disassembly is completed.
[0030] Although the utility model has been described in detail by referring to the attached drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Any person skilled in the art can make various equivalent modifications or replacements to the embodiments of the utility model without departing from the spirit and essence of the utility model, and these modifications or replacements shall be within the scope of the utility model. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, and these changes or replacements shall be within the protection scope of the utility model.
Claims
1. A dismounting device for a control valve of a dissolving pulp digester, comprising a circular plate; characterized in that, Two through holes one are symmetrically arranged on the circular plate, two semicircular plates are arranged below the circular plate, through holes two are arranged on the semicircular plates, the fastening bolts are penetrated through the through holes one and the through holes two, the fastening bolts are provided with nuts for fixing the circular plate and the semicircular plates together, and edges of the semicircular plates are in a stepped shape.
2. The dismounting device for the automatic valve of a dissolving pulp digester according to claim 1, characterized in that, A circular hole is arranged on a plane side of the semicircular plate, a limiting rod is inserted into the circular hole, and side surfaces of the two semicircular plates are connected through the limiting rod.
3. The dismounting device for the automatic valve of a dissolving pulp digester according to claim 2, characterized in that, The circular hole and the limiting rod are both provided with two.
4. The dismounting device for the automatic valve of a dissolving pulp digester according to claim 1, characterized in that, The through hole one is a long hole.
5. The dismounting device for the automatic valve of a dissolving pulp digester according to claim 2, characterized in that, The limiting rod is a double-headed bolt provided with two, each double-headed bolt is screw-connected with a limiting nut, and the two limiting nuts are respectively in abutment with different semicircular plates.
6. The dismounting device for the automatic valve of a dissolving pulp digester according to claim 1, characterized in that, In the dismounting device, the diameter of the circular plate is 174 mm, and the maximum diameter of the two semicircular plates is 205 mm.