Straight-section rotary drum component of horizontal screw centrifuge

Abstract

The utility model provides a straight-section rotary drum component of a horizontal screw centrifugal machine, and belongs to the technical field of horizontal screw centrifugal machines. The straight-section rotary drum component of the horizontal screw centrifuge comprises a rotary drum straight section, the inner wall of the rotary drum straight section comprises a large-diameter section and a small-diameter section, a barrel is inserted into the large-diameter section, the inner diameter of the barrel is the same as that of the small-diameter section, a protective layer is embedded in the inner wall of the barrel, and the surface of the protective layer is a smooth mirror surface. The detachable barrel is inserted into the large-diameter section, only the barrel needs to be replaced after abrasion, the maintenance cost is reduced, the service life of the whole rotary drum straight section is prolonged, the protective layer is embedded in the inner wall of the barrel, the surface of the protective layer is a smooth mirror surface, the abrasion-resistant protective layer is arranged, and the protective layer with the smooth surface is introduced into the inner wall, so that the service life of the rotary drum straight section is prolonged. Therefore, friction between the rotary drum and sediment is reduced, direct relative friction between the inner wall of the rotary drum and the sediment is avoided, the service life of the rotary drum is prolonged, and the service life of the straight section of the rotary drum is prolonged to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of horizontal screw centrifuges, and in particular to a straight section drum component of a horizontal screw centrifuge. Background Art

[0002] At present, the horizontal screw centrifuge is a sedimentation equipment with horizontal screw unloading and continuous operation. The working principle of this type of centrifuge is: the drum and the screw rotate at high speed in the same direction with a certain differential speed. The material is continuously introduced into the feed bin of the screw pusher through the feed pipe, and enters the drum after acceleration. Under the action of the centrifugal field, the heavier solid phase is deposited on the wall of the drum to form a sediment layer. The feeding screw continuously pushes the deposited solid phase to the cone section of the drum and discharges it out of the machine through the slag discharge port. The lighter liquid phase forms an inner liquid ring, which continuously overflows the drum from the overflow port at the large end of the drum and is discharged out of the machine through the liquid discharge port. This machine can continuously feed, separate and discharge at full speed;

[0003] The above-mentioned prior art solutions have the following defects: while the drum and the spiral inner cylinder rotate at high speed during the centrifugal process, there is a relatively small speed difference between them, causing the spiral pusher to continuously push the material; the slag has great friction and relative motion with the inner wall of the drum, which causes the inner wall of the drum to wear over time and reduces the life of the drum. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a straight section drum component of a horizontal screw centrifuge, aiming to improve the problems of wear on the inner wall of the drum and reduced service life.

[0005] An embodiment of the present application provides a straight section drum component of a horizontal screw centrifuge, including a straight section of the drum, wherein the inner wall of the straight section of the drum includes a large diameter section and a small diameter section, a barrel is inserted into the large diameter section, the inner diameter of the barrel is the same as the inner diameter of the small diameter section, a protective layer is embedded in the inner wall of the barrel, and the surface of the protective layer is a smooth mirror surface; a flange is coaxially fixed to one end of the barrel, and the flange is butted against the end of the straight section of the drum.

[0006] In a preferred embodiment of the present invention, the length of the large diameter section is not less than the length of the small diameter section, and the cylinder is coaxially arranged with the small diameter section.

[0007] In a preferred embodiment of the present invention, a junction is formed at the joint between the large diameter section and the small diameter section, and one end of the cylinder is sealed and butted against the junction.

[0008] In a preferred embodiment of the present invention, a sealing ring is provided at the joint between the cylinder and the docking station, and the thickness of the protective layer is 4-5 mm.

[0009] In a preferred embodiment of the utility model, threaded holes are respectively provided at both ends of the straight section of the drum, and a plurality of threaded holes are provided. The ends of the straight section of the drum are respectively mounted with the large end journal and the tapered drum through the threaded holes.

[0010] In a preferred embodiment of the present invention, a mounting hole is provided at the end of the flange, the mounting hole is arranged corresponding to the threaded hole, and the sealing ring is a ceramic sealing ring.

[0011] In a preferred embodiment of the present invention, an embedding groove is provided on the inner wall of the cylinder, and the protective layer is arranged in the embedding groove.

[0012] In a preferred embodiment of the utility model, the embedding groove is a strip groove, which is axially extended along the inner wall of the cylinder, and the protective layer is composed of a plurality of regular polygonal patches, which are laid along the embedding groove, and the regular polygonal patches are ceramic patches.

[0013] In a preferred embodiment of the present invention, the embedding groove is a spirally arranged groove, and the strip plate body of the protective layer is spirally embedded in the embedding groove, and the strip plate body is a ceramic plate.

[0014] Beneficial effects: The present application provides a straight section drum component of a horizontal screw centrifuge, which divides the inner wall of the straight section of the drum into a large diameter section and a small diameter section. The large diameter section is arranged at one end where the slag is discharged. A detachable cylinder body is inserted into the large diameter section. After wear, only the cylinder body needs to be replaced, which reduces maintenance costs and extends the practical life of the entire straight section of the drum. A protective layer is embedded in the inner wall of the cylinder, and the surface of the protective layer is a smooth mirror surface. A wear-resistant protective layer is provided, and a protective layer with a smooth surface is introduced into the inner wall, thereby reducing the friction between the drum and the sediment, avoiding direct relative friction between the inner wall of the drum and the sediment, thereby extending the service life of the drum, and to a certain extent extending the service life of the straight section of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the cutaway structure of the straight section shell of the drum provided in the embodiment of the present application;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of the straight drum component of the horizontal screw centrifuge provided in the embodiment of the present application;

[0018] Figure 3 An exploded view provided for an embodiment of the present application;

[0019] Figure 4 A schematic diagram of a three-dimensional structure of a straight section of a rotary drum provided in an embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the cross-section structure of the cylinder provided in an embodiment of the present application.

[0021] In the figure: 100, straight section of the drum; 101, large diameter section; 102, small diameter section; 103, junction; 104, threaded hole; 110, cylinder; 111, protective layer; 113, mounting groove; 130, flange; 131, mounting hole; 150, sealing ring. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] See also Figure 1-Figure 5The utility model provides a straight section drum component of a horizontal screw centrifuge, including a drum straight section 100, the inner wall of the drum straight section 100 includes a large diameter section 101 and a small diameter section 102, a barrel 110 is inserted into the large diameter section 101, the inner diameter of the barrel 110 is the same as the inner diameter of the small diameter section 102, a protective layer 111 is embedded in the inner wall of the barrel 110, and the surface of the protective layer 111 is smooth and mirror-like; a flange 130 is coaxially fixed to one end of the barrel 110, and the flange 130 is butted against the end of the drum straight section 100.

[0026] In a specific implementation of the present invention, the length of the large diameter section 101 is not less than the length of the small diameter section 102 , and the cylinder 110 is coaxially arranged with the small diameter section 102 .

[0027] See also Figure 1 In a specific embodiment of the present utility model, a junction 103 is formed at the junction of the large diameter section 101 and the small diameter section 102 , and one end of the cylinder 110 is sealed and docked with the junction 103 .

[0028] In a specific embodiment of the present invention, a sealing ring 150 is provided at the joint between the cylinder 110 and the docking station 103, and the thickness of the protective layer 111 is 4-5 mm; specifically, the thickness of the protective layer 111 is 4 mm, and 4 mm can reach the maintenance cycle of the equipment, and can be maintained together with other parts of the equipment, without disassembling the equipment for the maintenance of the cylinder 110 alone.

[0029] In a specific embodiment of the utility model, threaded holes 104 are respectively opened at both ends of the drum straight section 100, and a plurality of threaded holes 104 are provided. The ends of the drum straight section 100 are respectively installed with the big end journal and the tapered drum through the threaded holes 104.

[0030] In a specific implementation of the present invention, a mounting hole 131 is opened at the end of the flange 130 , and the mounting hole 131 is arranged corresponding to the threaded hole 104 . The sealing ring 150 is a ceramic sealing ring.

[0031] See also Figure 5 In a specific embodiment of the present utility model, an embedding groove 113 is opened on the inner wall of the cylinder 110 , and the protective layer 111 is arranged in the embedding groove 113 .

[0032] In a specific embodiment of the present utility model, the embedding groove 113 is a strip groove, and the strip groove is axially extended along the inner wall of the cylinder 110. The protective layer 111 is composed of a plurality of regular polygonal patches, and the regular polygonal patches are laid along the embedding groove 113. The regular polygonal patches are ceramic patches, and the advantages of ceramic patches are low cost, high temperature resistance and corrosion resistance.

[0033] The area of ​​a single regular polygon patch is 3 cm 2 -4cm 2 The smaller the patch area, the higher its stability, but the difficulty of patching increases. 2 -4cm 2 It is a relatively reasonable range that combines cost and actual operation.

[0034] The regular polygonal patch is a regular hexagonal patch. After pasting, gaps are formed between adjacent regular polygonal patches, and adhesive is filled in the gaps. According to the area design of the patch, it is designed as a regular hexagon to ensure that each side has a certain length, so that a strong adhesive force is formed between each patch to prevent it from falling off.

[0035] The adhesive is a ceramic composite material, which is a curing material used to protect the metal surface from physical wear and chemical corrosion. Therefore, the present invention uses the ceramic composite material not only as an adhesive but also as an anti-wear protective layer, which has a dual effect.

[0036] See also Figure 3-Figure 5 In a preferred embodiment of the present invention, the embedding groove 113 is a spirally arranged groove, and the protective layer 111 is a strip plate body, which is spirally embedded in the embedding groove 113, and the strip plate body is a ceramic plate;

[0037] The spiral setting is adopted, and the spiral direction is the same as the spiral direction of the feeding spiral, which reduces the friction in the rotation direction generated during the spiral pushing process, reduces wear and prolongs the service life.

[0038] The working principle of the straight section drum component of the horizontal screw centrifuge is as follows: when in use, the inner wall of the straight section 100 of the drum is divided into a large diameter section 101 and a small diameter section 102, and the large diameter section 101 is arranged at one end where the slag is discharged. A detachable cylinder 110 is inserted into the large diameter section 101. After wear, only the cylinder 110 needs to be replaced, thereby reducing maintenance costs and extending the practical life of the entire straight section 100 of the drum. A protective layer 111 is embedded in the inner wall of the cylinder 110, and the surface of the protective layer 111 is smooth and mirror-like. By providing a wear-resistant protective layer 111, a protective layer 111 with a smooth surface is introduced into the inner wall, thereby reducing the friction between the drum and the sediment, avoiding direct relative friction between the inner wall of the drum and the sediment, thereby extending the service life of the drum, and to a certain extent extending the service life of the straight section 100 of the drum.

[0039] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A straight section drum component of a horizontal screw centrifuge, characterized in that: include A drum straight section (100), wherein the inner wall of the drum straight section (100) comprises a large diameter section (101) and a small diameter section (102); a cylinder (110) is inserted into the large diameter section (101); the inner diameter of the cylinder (110) is the same as the inner diameter of the small diameter section (102); a protective layer (111) is embedded in the inner wall of the cylinder (110); the surface of the protective layer (111) is a smooth mirror surface; a flange (130) is coaxially fixed to one end of the cylinder (110); the flange (130) is butt-jointed with the end of the drum straight section (100).

2. The straight section drum component of a horizontal screw centrifuge according to claim 1, characterized in that: The length of the large diameter section (101) is not less than the length of the small diameter section (102), and the cylinder (110) is coaxially arranged with the small diameter section (102).

3. The straight section drum component of a horizontal screw centrifuge according to claim 1, characterized in that: A junction (103) is formed at the joint between the large diameter section (101) and the small diameter section (102), and one end of the cylinder (110) is sealed and butted against the junction (103).

4. The straight section drum component of a horizontal screw centrifuge according to claim 3, characterized in that: A sealing ring (150) is provided at the joint between the cylinder (110) and the docking platform (103), and the thickness of the protective layer (111) is 4-5 mm.

5. The straight section drum component of a horizontal screw centrifuge according to claim 4, characterized in that: The two ends of the drum straight section (100) are respectively provided with threaded holes (104), a plurality of the threaded holes (104) are provided, and the ends of the drum straight section (100) are respectively mounted with the large end journal and the conical drum through the threaded holes (104).

6. A straight section drum component of a horizontal screw centrifuge according to claim 5, characterized in that: The end of the flange (130) is provided with a mounting hole (131), the mounting hole (131) is arranged corresponding to the threaded hole (104), and the sealing ring (150) is a ceramic sealing ring.

7. The straight section drum component of a horizontal screw centrifuge according to claim 1, characterized in that: An embedding groove (113) is provided on the inner wall of the cylinder (110), and the protective layer (111) is arranged in the embedding groove (113).

8. The straight section drum component of a horizontal screw centrifuge according to claim 7, characterized in that: The embedding groove (113) is a strip groove, and the strip groove is axially extended along the inner wall of the cylinder (110). The protective layer (111) is composed of a plurality of regular polygonal patches, and the regular polygonal patches are laid along the embedding groove (113). The regular polygonal patches are ceramic patches.

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