Replaceable wear-resistant discharge port structure of a decanter centrifuge

Abstract

The present application belongs to the technical field of centrifuges, and particularly relates to a replaceable wear-resistant slagging-off port structure of a horizontal screw centrifuge, which comprises a conical section drum, a small end journal and a first conversion piece. The conical section drum is provided with a plurality of installation column feet which are uniformly and interval arranged along the circumferential direction. The transverse section of the installation column foot is saddle-shaped, and the gap between the adjacent installation column feet forms a first slagging-off port. The first conversion piece is annular, and comprises a supporting ring and a limiting sheet. The supporting ring is formed into a structure which is matched with the inner hole of the conical section drum, so as to be embedded in the inner hole. The limiting sheet is matched with the installation column foot, and is connected to the supporting ring. The pressing surface of the limiting sheet which faces the installation column foot is formed into a curved surface. The outer side surface of the limiting sheet is formed into a plane, and the gap between the adjacent limiting sheets forms a second slagging-off port. Thus, the problems of single function, poor interchangeability and low applicability of the slagging-off port of the horizontal screw centrifuge in the prior art are solved.

Description

Technical Field

[0001] This invention belongs to the field of centrifuge technology, specifically relating to a replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge. Background Technology

[0002] A horizontal screw centrifuge is an industrial centrifugal separation device that uses centrifugal force to separate solid particles from liquid in a mixture. It is widely used in industries such as chemical, pharmaceutical, food, environmental protection, and petroleum.

[0003] In a horizontal screw centrifuge, the material to be separated (mother liquor) undergoes centrifugal separation within the drum. The solid residue (heavy phase) is then conveyed by a screw conveyor to the smaller end of the drum and discharged from the drum outlet. Currently, various shapes and structures of outlets are available to suit different material separation characteristics and process requirements. In established centrifuges, a single outlet structure is typically selected. However, in practical industrial applications, the following problems still exist:

[0004] (1) The structure of the discharge port of a horizontal screw centrifuge has a significant impact on the separation effect of materials, equipment output, and wear resistance. When the equipment is applied to new materials or materials that have not been verified to be ideal in actual use, the discharge port structure can only be used on a trial basis. Therefore, there are many uncertainties. This uncertainty increases the investment cost of verifying the effect of the equipment. In severe cases, it may even affect the performance of the centrifuge and reduce the psychological perception of the company and brand at the user end.

[0005] (2) The slag outlet of the horizontal screw centrifuge is usually set on the conical drum. This part is often a large part, formed by centrifugal casting. The single slag outlet structure greatly limits the interchangeability of equipment components. Once the current centrifuge slag outlet structure is not suitable for the current material usage requirements, it can only be replaced as a whole, which will result in a large equipment cost.

[0006] Therefore, in response to the above-mentioned technical problems, a more reasonable technical solution is needed to solve the problems of the single connection form and inconvenient disassembly and assembly in the existing slag outlet structure. Summary of the Invention

[0007] The purpose of this invention is to provide a replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge, so as to solve the problems of single function, poor interchangeability and low applicability of the slag outlet of the existing horizontal screw centrifuge.

[0008] To achieve the above objectives, the present invention provides a replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge, comprising a conical drum, a small-end journal, and a first conversion component. The conical drum is provided with a plurality of mounting feet evenly spaced along the circumferential direction. The transverse cross-section of the mounting feet is saddle-shaped, such that the inner wall of the mounting feet is formed as a curved surface convex toward the conical drum. The gap between adjacent mounting feet forms the first slag outlet.

[0009] The first conversion component is formed in a ring shape, including a support ring and a limiting piece. The support ring is configured to fit into the inner hole of the conical drum so as to be embedded in the inner hole. The limiting pieces are arranged in a plurality of positions corresponding to the mounting feet and connected to the support ring. The pressing surface of the limiting piece facing the mounting foot is formed as a curved surface so as to fit against the inner wall surface of the mounting foot. The outer surface of the limiting piece is formed as a plane, and the gap between adjacent limiting pieces forms a second slag outlet, the area of ​​which is smaller than the area of ​​the first slag outlet.

[0010] In one possible design, the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge includes a second conversion element, which is embedded between adjacent limiting plates; wherein, the second conversion element is provided with a third slag outlet, and the area of ​​the third slag outlet is smaller than the area of ​​the second slag outlet.

[0011] In one possible design, the shapes of the first slag outlet, the second slag outlet, and the third slag outlet are different from each other.

[0012] In one possible design, the limiting plate is provided with a limiting groove, and the two sides of the second conversion member are provided with limiting platforms that are adapted to the limiting groove, so that the second conversion member can be mounted on the limiting plate.

[0013] In one possible design, the second conversion member is provided with a clearance groove so that a portion of the structure of the second conversion member can be embedded radially between the two limiting pieces and abut against the support ring.

[0014] In one possible design, the edge of the limiting piece extends to the tangent point of the mounting post, such that the outer surface of the limiting piece is formed as a tangent and the tangent lies on the tangent line of the mounting post.

[0015] In one possible design, the conical drum has an annular groove adapted to the support ring; the support ring is disposed in the inner hole of the conical drum, and the bottom surface of the support ring is in contact with the groove surface of the annular groove to restrict the position of the support ring in the axial direction.

[0016] In one possible design, the upper and lower end faces of the support ring are respectively provided with sealing grooves, and a sealing ring is embedded in the sealing groove.

[0017] In one possible design, the small end journal is detachably connected to the mounting post by fasteners.

[0018] The design of the first conversion component ensures the maximum opening size of the second slag outlet based on the existing structure, improving slag discharge capacity and helping to reduce splashing and scattering of material during discharge. The curved surface design of the limiting plate can fit the inner wall of the mounting column, helping to improve the separation effect of solid particles from the inner wall of the drum. The support ring is embedded in the inner hole of the conical drum and is tightened by the reserved stop, enhancing the stability of the entire slag outlet structure. By optimizing the slag outlet design, the replacement frequency due to wear is reduced, thereby saving production costs.

[0019] Through the above technical solution, based on the design of the first conversion component, the conversion between different slag outlets can be achieved. Specifically, the first and second slag outlets can be switched, thereby adjusting the slag discharge area and optimizing the discharge efficiency of solid particles, better adapting to different separation process requirements. This allows the same equipment to adapt to different materials and process conditions, enhancing its versatility. It also facilitates quick replacement after wear, reducing downtime and improving production efficiency. Furthermore, it simplifies subsequent maintenance and cleaning, helping to maintain the centrifuge's efficient operation. The replaceable wear-resistant slag outlet structure design of this horizontal screw centrifuge not only improves the equipment's durability and ease of maintenance but also optimizes slag discharge efficiency and separation effect, contributing to increased production efficiency and reduced operating costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded structural diagram of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment;

[0023] Figure 3 This is a top view schematic diagram of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment;

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along AA;

[0025] Figure 5 yes Figure 4 A magnified structural diagram of part A in the middle;

[0026] Figure 6 This is a three-dimensional structural diagram of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment. The small end journal has been removed in order to show the internal structure.

[0027] Figure 7 yes Figure 6 A magnified structural diagram of part B in the middle section;

[0028] Figure 8 This is a three-dimensional structural diagram of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment. In order to show the internal structure, the small end journal has been removed; at the same time, the second conversion component has also been removed.

[0029] Figure 9 yes Figure 8 A magnified structural diagram of section C;

[0030] Figure 10 This is a three-dimensional structural schematic diagram of the conical drum in one embodiment of the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention;

[0031] Figure 11 yes Figure 10 A magnified structural diagram of section D in the middle;

[0032] Figure 12 This is a three-dimensional structural schematic diagram of the first conversion component in the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment;

[0033] Figure 13 This is a three-dimensional structural schematic diagram of the second conversion component in the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention in one embodiment;

[0034] Figure 14 This is a schematic diagram of the structure of the second conversion component in the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge provided by the present invention, when the first conversion component is assembled on it.

[0035] In the above attached figures: 1-conical drum, 11-mounting column foot, 111-curved surface, 12-first slag outlet, 13-annular groove, 2-small end journal, 3-first conversion component, 31-support ring, 32-limiting plate, 321-pressure surface, 322-outer surface, 323-limiting groove, 33-second slag outlet, 4-second conversion component, 41-third slag outlet, 42-limiting platform, 43-avoidance groove, 5-sealing ring. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that while the description of these embodiments is intended to aid in understanding the invention, it does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the invention. However, the invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0037] According to a specific embodiment of the present invention, a replaceable wear-resistant discharge port structure for a horizontal screw centrifuge is provided. This structure allows for free conversion of the discharge port structure without altering the original centrifuge structure. This flexible conversion of the discharge port structure better meets the actual needs of different separated materials, improving the centrifuge's performance and increasing its market competitiveness. Furthermore, the installation of this discharge port structure is very convenient and quick, effectively improving the interchangeability of centrifuge components and facilitating product standardization. In addition, the discharge port is a wear-prone area; the replaceable structure provided in this disclosure significantly reduces the costs of maintenance, repair, and modification of old discharge port structures. Figures 1 to 14 One specific embodiment is shown, and the product will be described in detail below with reference to text and drawings.

[0038] See Figures 1 to 14 As shown, the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge includes a conical drum 1, a small end journal 2, and a first conversion component 3. The conical drum 1 is provided with a plurality of mounting feet 11 evenly spaced along the circumferential direction. The transverse cross section of the mounting feet 11 is saddle-shaped, so that the inner wall of the mounting feet 11 is formed as a curved surface 111 convex to the conical drum 1. The gap between adjacent mounting feet 11 forms the first slag outlet 12.

[0039] The first conversion element 3 is formed in an annular shape, including a support ring 31 and a limiting piece 32. The support ring 31 is formed to fit into the inner hole of the conical drum 1 so as to be embedded in the inner hole. The limiting pieces 32 are arranged in a plurality of corresponding to the mounting legs 11 and connected to the support ring 31. The pressing surface 321 of the limiting piece 32 facing the mounting legs 11 is formed as a curved surface 111 so as to fit against the inner wall surface of the mounting legs 11. The outer side surface 322 of the limiting piece 32 is formed as a plane. The gap between adjacent limiting pieces 32 forms a second slag outlet 33. The area of ​​the second slag outlet 33 is smaller than the area of ​​the first slag outlet 12.

[0040] The design of the first conversion component 3 ensures the maximum opening size of the second slag outlet 33 based on the existing structure, improving slag discharge capacity and helping to reduce splashing and scattering of materials during discharge. The curved surface 111 of the limiting plate 32 can fit the inner wall of the mounting column 11, helping to improve the separation effect of solid particles from the inner wall of the drum. The support ring 31 is embedded in the inner hole of the conical drum 1 and is pressed by the reserved stop, enhancing the stability of the entire slag outlet structure. By optimizing the slag outlet design, the replacement frequency due to wear is reduced, thereby saving production costs.

[0041] Through the above technical solution, based on the design of the first conversion component 3, the conversion of different slag outlets can be realized. That is, the first slag outlet 12 and the second slag outlet 33 can be converted, thereby adjusting the size of the slag outlet area and optimizing the discharge efficiency of solid particles. This can adapt to different separation process requirements.

[0042] The interchangeable slag outlet design allows the same equipment to adapt to different materials and process conditions, enhancing its versatility. It also facilitates quick replacement after wear, reducing downtime and improving production efficiency. Furthermore, it simplifies subsequent maintenance and cleaning, helping to maintain the centrifuge's high-efficiency operation. This horizontal screw centrifuge's replaceable, wear-resistant slag outlet structure not only improves the equipment's durability and ease of maintenance but also optimizes slag discharge efficiency and separation effect, contributing to increased production efficiency and reduced operating costs.

[0043] It should also be noted that, unless otherwise explicitly specified and limited, the terms “setup” and “connection” should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium.

[0044] In one embodiment provided in this disclosure, the replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge includes a second conversion element 4, which is embedded between adjacent limiting plates 32; wherein, the second conversion element 4 is provided with a third slag outlet 41, and the area of ​​the third slag outlet 41 is smaller than the area of ​​the second slag outlet 33.

[0045] By embedding the second conversion element 4 between adjacent limiting plates 32, a third slag outlet 41, distinct from the first slag outlet 12 and the second slag outlet 33, can be provided. This increases the adjustment options for the slag outlet, thereby better adapting to different process requirements. By adjusting the area of ​​the slag outlet, the slag discharge performance of the equipment can be optimized, ensuring that the equipment maintains optimal performance under various operating conditions.

[0046] Specifically, the area of ​​the third slag outlet 41 is smaller than that of the second slag outlet 33, which makes it easier for operators to finely adjust the discharge rate and amount of solid particles according to the specific separation task.

[0047] The second conversion component 4 enables the horizontal screw centrifuge to adapt to a wider variety of materials and different separation conditions, enhancing the equipment's adaptability and flexibility. The design of the second conversion component 4 simplifies the maintenance and replacement process of the discharge port, extending the equipment's service life by allowing replacement of only the second conversion component 4 without altering the entire discharge port structure.

[0048] See Figures 11 to 13 As shown, the first discharge port 12, the second discharge port 33, and the third discharge port 41 have different shapes. Different discharge port shapes can adapt to different types of materials and different separation process requirements, providing a wider range of applications. By changing the shape of the discharge port, the operator can adjust the centrifuge's discharge efficiency and separation effect according to actual needs, increasing operational flexibility. Different discharge port shapes can optimize the discharge path and speed based on the physical characteristics of the material (such as particle size and density), and help reduce material blockage at the discharge port, maintaining smooth equipment operation.

[0049] Furthermore, the limiting plate 32 is provided with a limiting groove 323, and the two sides of the second conversion member 4 are provided with limiting platforms 42 that are adapted to the limiting groove 323, so that the second conversion member 4 can be mounted on the limiting plate 32.

[0050] The cooperation between the limiting groove 323 and the limiting platform 42 improves the positioning reliability of the second conversion component 4 in the slag outlet structure, ensuring that the second conversion component 4 is stably mounted on the limiting plate 32. This prevents displacement or vibration of the second conversion component 4 during centrifuge operation, thereby improving the overall mechanical strength and durability of the structure. Because the second conversion component 4 is easy to replace, maintenance personnel can perform replacement operations quickly, reducing maintenance time and costs. Simultaneously, operators can flexibly select different sizes of the second conversion component 4 according to actual separation effects and slag discharge requirements, allowing different slag outlet sizes to adapt to different process needs, achieving optimal separation results and improving the utilization rate of the centrifuge.

[0051] In this disclosure, the second conversion component 4 is provided with a clearance groove 43, which allows a portion of the structure of the second conversion component 4 to be radially embedded between the two limiting pieces 32 and abut against the support ring 31. The clearance groove 43 allows a portion of the structure of the second conversion component 4 to be radially embedded between the two limiting pieces 32, making the structure more compact and stable. The clearance groove 43 also allows the second conversion component 4 to be more stably fixed on the support ring 31, reducing vibration and displacement during operation.

[0052] In one embodiment provided in this disclosure, the edge of the limiting piece 32 extends to the tangent point of the mounting base 11, such that the outer surface 322 of the limiting piece 32 is formed as a tangent and the tangent is located on the tangent line of the mounting base 11. By compensating for the curvature 111 of the horseshoe-shaped base with an arc-shaped piece, a tangent can be formed at the closest point between the two bases, which together with the end faces of the conical drum 1 and the small end journal 2 constitutes the second slag outlet 33 (rectangular slag outlet). This design helps to optimize the shape of the slag outlet, making it more suitable for the discharge of solid particles. At the same time, based on the cooperation between the limiting piece 32 and the curvature 111 of the mounting base 11, the stability of the slag outlet structure is enhanced, reducing vibration or deformation that may occur during high-speed rotation.

[0053] The structural design of the limiting plate 32 ensures the maximum opening size of the second slag outlet 33 (rectangular slag outlet) based on the existing structure, thereby maximizing the slag discharge capacity and improving the working efficiency of the centrifuge. At the same time, the optimized second slag outlet 33 can also improve the separation efficiency of solid particles and reduce the retention of material at the slag outlet.

[0054] In one embodiment provided in this disclosure, the conical drum 1 is provided with an annular groove 13 adapted to the support ring 31; the support ring 31 is disposed in the inner hole of the conical drum 1, and the bottom surface of the support ring 31 is in contact with the groove surface of the annular groove 13 to limit the position of the support ring 31 in the axial direction. In this way, the annular groove 13 provides a clear positioning surface for the support ring 31, which is beneficial for the rapid installation and positioning of the support ring 31, thereby stably installing the second conversion member 4 on the conical drum 1 and ensuring that the position of the support ring 31 in the axial direction is effectively limited. The tight fit between the support ring 31 and the annular groove 13 enhances the stability of the entire structure and reduces vibration and displacement during high-speed rotation.

[0055] To improve the sealing effect, sealing grooves are provided on the upper and lower ends of the support ring 31, and sealing rings 5 ​​are embedded in the sealing grooves. The embedding of sealing rings 5 ​​enhances the sealing performance between the support ring 31 and adjacent components, helping to prevent accidental leakage of materials during centrifuge operation. This not only reduces the contact between the materials inside the centrifuge and the external environment, avoiding cross-contamination, but also reduces wear and contamination, lowering the frequency and cost of equipment maintenance. This design ensures that the slag outlet structure has good sealing performance, guaranteeing continuous and stable operation of the centrifuge, reducing downtime caused by leakage, and improving production efficiency.

[0056] Based on the detachable connection of the sealing ring 5, different materials and designs can be selected according to different working environments and material characteristics to adapt to various operating conditions and facilitate regular inspection and replacement. The design of the sealing groove helps to fix the sealing ring 5, ensuring its stability during centrifuge operation.

[0057] In one embodiment provided in this disclosure, the small end journal 2 is detachably connected to the mounting post 11 by fasteners. This detachable design makes the installation, removal, and maintenance of the small end journal 2 simpler and faster. This allows the small end journal 2 to be quickly replaced or adjusted as needed to adapt to different working conditions or process requirements.

[0058] The detachable design of the small end journal 2 allows for adjustment of the position and size of the slag outlet, thereby optimizing slag discharge efficiency. When the small end journal 2 or the mounting column 11 needs to be replaced, only the damaged parts can be replaced, rather than the entire structure, effectively reducing maintenance costs.

[0059] Alternatively, this disclosure uses screws or threaded rods as fasteners to securely connect the small end journal 2 to the mounting base 11 via a threaded connection. Regular inspection and replacement of the fasteners ensure connection reliability and extend the service life of equipment components. It also simplifies component maintenance and replacement, reducing maintenance costs.

[0060] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, or the orientation or positional relationship in which those skilled in the art would usually understand it, or the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the purpose of facilitating the description of the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0061] Finally, it should be noted that this invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products under the guidance of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention, which should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge, comprising a conical drum and a small-end journal, characterized in that, The conical drum is provided with a plurality of mounting feet evenly spaced along the circumference. The transverse cross section of the mounting feet is saddle-shaped, so that the inner wall of the mounting feet is formed as a curved surface convex to the conical drum. The gap between adjacent mounting feet forms the first slag outlet. The replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge also includes a first conversion component. The first conversion component is formed in a ring shape, including a support ring and a limiting plate. The support ring is adapted to fit into the inner hole of the conical drum so as to be embedded in the inner hole. Multiple limiting plates are arranged corresponding to the mounting legs and connected to the support ring. The pressing surface of the limiting plate facing the mounting leg is formed as a curved surface so as to fit against the inner wall surface of the mounting leg. The outer surface of the limiting plate is formed as a plane, and the gap between adjacent limiting plates forms a second slag outlet. The area of ​​the second slag outlet is smaller than the area of ​​the first slag outlet.

2. The replaceable wear-resistant slag outlet structure for the horizontal screw centrifuge according to claim 1, characterized in that, The replaceable wear-resistant slag outlet structure of the horizontal screw centrifuge includes a second conversion component, which is embedded between adjacent limiting plates; wherein, the second conversion component is provided with a third slag outlet, and the area of ​​the third slag outlet is smaller than the area of ​​the second slag outlet.

3. The replaceable wear-resistant slag outlet structure for the horizontal screw centrifuge according to claim 2, characterized in that, The shapes of the first slag outlet, the second slag outlet, and the third slag outlet are different from each other.

4. The replaceable wear-resistant slag outlet structure for the horizontal screw centrifuge according to claim 2, characterized in that, The limiting plate is provided with a limiting groove, and the two sides of the second conversion member are provided with limiting platforms that are adapted to the limiting groove, so that the second conversion member can be mounted on the limiting plate.

5. The replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge according to claim 4, characterized in that, The second conversion component is provided with a clearance groove so that a portion of the structure of the second conversion component can be embedded radially between the two limiting pieces and abut against the support ring.

6. The replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge according to claim 1, characterized in that, The edge of the limiting piece extends to the tangent point of the mounting post, such that the outer surface of the limiting piece is formed as a tangent and the tangent is located on the tangent line of the mounting post.

7. The replaceable wear-resistant slag discharge port structure for a horizontal screw centrifuge according to any one of claims 1 to 6, characterized in that, The conical drum is provided with an annular groove that is adapted to the support ring; the support ring is disposed in the inner hole of the conical drum, and the bottom surface of the support ring is in contact with the groove surface of the annular groove to restrict the position of the support ring in the axial direction.

8. The replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge according to any one of claims 1 to 6, characterized in that, The upper and lower ends of the support ring are respectively provided with sealing grooves, and sealing rings are embedded in the sealing grooves.

9. The replaceable wear-resistant slag outlet structure for a horizontal screw centrifuge according to any one of claims 1 to 6, characterized in that, The small end journal is detachably connected to the mounting column foot by fasteners.

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