A high-strength dry powder double-shaft mixer housing

Abstract

The utility model discloses a high strength's dry powder double shaft mixer shell relates to double shaft mixer technical field, the utility model discloses a shell body, chassis and a plurality of support seat, shell body bottom is plane structure, and both sides corner department of shell body bottom is arc corner, and both sides, bottom and corner department of shell body are all along length direction and are equipped with whole cross rib, and support seat includes bottom crossbeam and two bottom edge beam. The utility model discloses a whole rib strip of setting whole in the length direction of shell body, has built the continuous efficient load transmission path, makes the shell bottom form a high stiffness's stiffened plate structure, this not only has promoted the overall bending -resistant ability of shell greatly, also has effectively suppressed the local buckling deformation of bottom plate, has guaranteed the long -term shape stability of equipment under heavy load, vibration working condition, has improved the strength, and through support seat realizes the connection between shell body and chassis, further improves the strength and load capacity of shell body.

Description

Technical Field

[0001] This utility model belongs to the technical field of twin-shaft mixers, and in particular relates to a high-strength shell for a dry powder twin-shaft mixer. Background Technology

[0002] In the field of dry powder twin-shaft mixer manufacturing, its outer shell is usually composed of a box with an open top (which can be sealed) and a closed bottom. The corners on both sides of the bottom are arc-shaped structures adapted to the mixing shaft. In order to ensure its long-term working strength to withstand the weight of the material and the vibration of the mixing shaft, the bottom and side walls of the outer shell need to be equipped with effective reinforcement and support structures.

[0003] In the existing technology, there are mainly two solutions, but both have significant drawbacks: Option 1 (Bottom Reinforcement): Weld a support base connected to the base frame to the bottom of the shell, and set a split rib along the length of the shell (due to the presence of the support base, space needs to be made). This option has insufficient structural strength, and the split ribs cannot form a continuous load path, resulting in poor bending performance of the shell. Furthermore, stress concentration is easily formed at the ends of the ribs, which can lead to fatigue cracks.

[0004] The second solution (side reinforcement solution): Existing technology proposes welding angle irons along the length of the shell sidewalls. To avoid the assembly difficulties caused by the angle irons, vertical columns are used to connect the angle irons to the base frame, attempting to transfer some of the load downwards through the sides. While this solution partially alleviates the bottom assembly problem, it introduces new and more serious drawbacks: 1. Unreasonable force flow path and low structural efficiency: The main load is applied to the bottom of the shell and the force is transmitted through the lateral angle iron and columns, forming a detour and inefficient "cantilever" force flow path, which fails to achieve direct and efficient load transmission.

[0005] 2. Insufficient lateral connection stiffness: The connection nodes between the angle iron and the outer shell side wall, and between the angle iron and the column are relatively weak. Under strong vibration conditions, they are prone to become structural weaknesses, resulting in large overall vibration of the equipment and easy loosening or cracking of the connection.

[0006] Therefore, neither the traditional bottom rib design nor the improved side angle iron design can guarantee high strength and rigidity while achieving fast, precise, and efficient assembly. This long-standing technical contradiction has severely restricted the improvement of the performance and manufacturing level of dry powder twin-shaft mixers. Summary of the Invention

[0007] The purpose of this invention is to provide a high-strength shell for a dry powder twin-shaft mixer. By setting integral stiffeners along the length of the shell, a continuous and efficient load transfer path is constructed, forming a high-rigidity stiffened plate structure at the bottom of the shell. This not only significantly improves the overall bending resistance of the shell but also effectively suppresses local buckling deformation of the bottom plate, ensuring the long-term stability of the equipment under heavy load and vibration conditions and improving its strength. At the same time, the connection between the shell and the base frame is achieved through the support seat, further improving the strength and load-bearing capacity of the shell.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a high-strength dry powder twin-shaft mixer shell, including a shell body, a base frame and several support seats. The bottom of the shell body has a flat structure, and the two corners on both sides of the bottom of the shell body are arc corners. The outer shell has horizontal ribs along its length on both sides, bottom and corners; The support base includes a bottom crossbeam and two bottom edge beams. The cross-section of the bottom crossbeam and the bottom edge beams is I-shaped. The top of the bottom edge beams is an arc edge structure. The top of both the bottom edge beams and the bottom crossbeams is provided with a groove. Both ends of the bottom crossbeam are provided with oblique cuts. The bottom crossbeam is a trapezoidal structure. The inner side of the bottom edge beam is provided with an inner oblique cut that matches the oblique cut. The two bottom edge beams are symmetrically arranged at both ends of the bottom crossbeam. The inner oblique cut of the bottom edge beam and the oblique cut at the end of the bottom crossbeam fit together and a pre-welding flange plate is provided between them. Several of the aforementioned support seats are linearly arranged between the bottom of the outer shell and the base frame. The bottom crossbeam of the support seat is welded and fixed to the bottom of the outer shell, and the bottom side beam is welded and fixed to the corner of the bottom of the outer shell. The horizontal ribs on the outer shell are embedded in the slots on the bottom crossbeam and the bottom side beam. The bottom of the bottom crossbeam and the bottom side beam are both welded and fixed to the base frame.

[0009] Furthermore, the base frame includes a set of ground beams, two of which are respectively located below the outer shell on both sides and parallel to the outer shell. Several connecting beams are linearly arranged between the two ground beams, and the bottom crossbeams and bottom edge beams of several support seats are welded and fixed to the connecting beams.

[0010] Furthermore, a number of columns are linearly fixed to the top of the ground beam, and the columns are positioned opposite to a number of support seats. The outer side of the bottom beam is a vertical structure and is welded and fixed to the inner side of the columns.

[0011] Furthermore, the top of the column extends to the top edge of the outer shell, and the horizontal ribs on both sides of the outer shell are attached to and welded to the inner side of the column.

[0012] Furthermore, the inner inclined side of the bottom edge beam and both ends of the bottom crossbeam are provided with preset openings, and the pre-welding flange plate includes plates disposed on the front and rear sides of the connection between the bottom edge beam and the bottom crossbeam, and bolts penetrating the preset openings are provided between the two plates.

[0013] Furthermore, the ground beam, connecting beam, and column are all made of I-beams, square steel, rectangular steel, or angle iron.

[0014] This utility model has the following beneficial effects: 1. This utility model constructs a continuous and efficient load transfer path by setting an integral stiffener along the length of the outer shell, forming a high-rigidity stiffened plate structure at the bottom of the outer shell. This not only significantly improves the overall bending resistance of the outer shell, but also effectively suppresses the local buckling deformation of the base plate, ensuring the long-term stability of the equipment under heavy load and vibration conditions, and improving strength. At the same time, the connection between the outer shell and the base frame is realized through the support seat, further improving the strength and load capacity of the outer shell.

[0015] 2. This utility model avoids spatial interference caused by different positions of the ribs on the outer shell by designing a split support base. It facilitates the docking, pre-welding positioning and welding of the support base. During installation, the bottom beam can be flexibly installed and positioned from the side, achieving a perfect fit with complex rib structures. The assembly process is smooth and precise, greatly improving installation efficiency.

[0016] 3. Through the design of the column, this utility model can not only connect the side of the support base and the base frame, but also connect the upper part of both sides of the shell to the column, thereby further improving the strength of the shell.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a high-strength dry powder twin-shaft mixer shell according to the present invention; Figure 2 This is a structural schematic diagram of the support base and connecting beam; The attached diagram lists the components represented by each number as follows: 1-Outer shell, 2-Base frame, 3-Support base, 4-Pre-welding flange plate, 101-Horizontal reinforcement, 201-Ground beam, 202-Connecting beam, 203-Column, 301-Bottom horizontal beam, 302-Bottom edge beam, 303-Slot, 304-Bevel cut, 305-Inner bevel, 401-Plate, 402-Bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 As shown, this utility model is a high-strength dry powder twin-shaft mixer shell, including a shell body 1, a base frame 2 and several support seats 3. The bottom of the shell body 1 is a flat structure, and the corners on both sides of the bottom of the shell body 1 are arc corners. The outer shell 1 has horizontal ribs 101 along its length on both sides, bottom and corners; The support base 3 includes a bottom crossbeam 301 and two bottom side beams 302. The cross sections of the bottom crossbeam 301 and the bottom side beams 302 are both I-shaped structures. The top of the bottom side beams 302 is an arc edge structure. The top of the bottom side beams 302 and the bottom crossbeam 301 are both provided with slots 303. Both ends of the bottom crossbeam 301 are provided with oblique cuts 304. The bottom crossbeam 301 is a regular trapezoidal structure. The inner side of the bottom side beam 302 is provided with an inner oblique cut 305 that matches the oblique cut 304. The two bottom side beams 302 are symmetrically arranged at both ends of the bottom crossbeam 301. The inner oblique cut 305 of the bottom side beam 302 and the oblique cut 304 at the end of the bottom crossbeam 301 are fitted together and a pre-welding flange plate 4 is provided between them. Several support seats 3 are linearly arranged between the bottom of the outer shell 1 and the base frame 2. The bottom crossbeam 301 of the support seat 3 is welded and fixed to the bottom of the outer shell 1, and the bottom side beam 302 is welded and fixed to the corner of the bottom of the outer shell 1. The horizontal rib 101 on the outer shell 1 is embedded in the slot 303 set on the bottom crossbeam 301 and the bottom side beam 302. The bottom of the bottom crossbeam 301 and the bottom side beam 302 are both welded and fixed to the base frame 2.

[0022] Among them, such as Figure 1-2 As shown, the base frame 2 includes a set of ground beams 201. The two ground beams 201 are respectively arranged on the lower sides of the outer shell 1 and are parallel to the outer shell 1. Several connecting beams 202 are linearly arranged between the two ground beams 201. The bottom cross beams 301 and bottom edge beams 302 of several support seats 3 are welded and fixed on the connecting beams 202.

[0023] Among them, such as Figure 1 As shown, several columns 203 are linearly fixed to the top of the ground beam 201. The columns 203 are positioned opposite to the support seats 3. The outer side of the bottom beam 302 is a vertical structure and is welded and fixed to the inner side of the columns 203.

[0024] Among them, such as Figure 1 As shown, the top of the column 203 extends to the top edge of the outer shell 1, and the horizontal ribs 101 on both sides of the outer shell 1 are attached to and welded to the inner side of the column 203.

[0025] Among them, such as Figure 1-2 As shown, the inner inclined opening 305 side of the bottom beam 302 and both ends of the bottom crossbeam 301 are provided with preset openings. The pre-welding flange plate 4 includes plates 401 set on the front and rear sides of the connection between the bottom beam 302 and the bottom crossbeam 301, and bolts 402 that pass through the preset openings are provided between the two plates 401.

[0026] Among them, the ground beam 201, the connecting beam 202 and the column 203 are all I-beams, square steel, rectangular steel or angle iron.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-strength dry powder twin-shaft mixer shell, comprising a shell body (1) and a base frame (2), wherein the bottom of the shell body (1) is a planar structure, and the two corners at the bottom of the shell body (1) are both arc-shaped corners, characterized in that: It also includes several support bases (3); The outer shell (1) is provided with horizontal ribs (101) along the length direction on both sides, bottom and corners. The support base (3) includes a bottom crossbeam (301) and two bottom side beams (302). The cross sections of the bottom crossbeam (301) and the bottom side beams (302) are both I-shaped structures. The top of the bottom side beams (302) is an arc edge structure. The top of the bottom side beams (302) and the bottom crossbeams (301) are both provided with slots (303). Both ends of the bottom crossbeam (301) are provided with oblique cuts (304). The bottom crossbeam (301) is a trapezoidal structure. The inner side of the bottom side beam (302) is provided with an inner oblique cut (305) that matches the oblique cut (304). The two bottom side beams (302) are symmetrically arranged at both ends of the bottom crossbeam (301). The inner oblique cut (305) of the bottom side beam (302) and the oblique cut (304) at the end of the bottom crossbeam (301) fit together and a pre-welding flange plate (4) is provided between them. Several of the aforementioned support seats (3) are linearly arranged between the bottom of the outer shell (1) and the base frame (2). The bottom crossbeam (301) of the support seat (3) is welded and fixed to the bottom of the outer shell (1). The bottom side beam (302) is welded and fixed to the corner of the bottom of the outer shell (1). The horizontal rib (101) on the outer shell (1) is embedded in the slot (303) on the bottom crossbeam (301) and the bottom side beam (302). The bottom of the bottom crossbeam (301) and the bottom side beam (302) are both welded and fixed to the base frame (2).

2. The high-strength dry powder twin-shaft mixer shell according to claim 1, characterized in that, The base frame (2) includes a set of ground beams (201). The two ground beams (201) are respectively located below the two sides of the outer shell (1) and are parallel to the outer shell (1). A number of connecting beams (202) are linearly arranged between the two ground beams (201). The bottom cross beams (301) and bottom edge beams (302) of the several support seats (3) are welded and fixed on the connecting beams (202).

3. The high-strength dry powder twin-shaft mixer shell according to claim 2, characterized in that, The top of the ground beam (201) is linearly fixed with several columns (203), and the columns (203) are positioned opposite to several support seats (3). The outer side of the bottom beam (302) is a vertical side structure and is welded and fixed to the inner side of the columns (203).

4. The high-strength dry powder twin-shaft mixer shell according to claim 3, characterized in that, The top of the column (203) extends to the top edge of the outer shell (1), and the horizontal ribs (101) on both sides of the outer shell (1) are attached to and welded to the inner side of the column (203).

5. The high-strength dry powder twin-shaft mixer shell according to claim 1, characterized in that, The bottom edge beam (302) has a pre-set opening on the inner oblique opening (305) side and both ends of the bottom cross beam (301). The pre-welding flange plate (4) includes plates (401) set on the front and rear sides of the connection between the bottom edge beam (302) and the bottom cross beam (301). A bolt (402) passing through the pre-set opening is provided between the two plates (401).

6. The high-strength dry powder twin-shaft mixer shell according to claim 4, characterized in that, The ground beam (201), connecting beam (202) and column (203) are all made of I-beams, square steel, rectangular steel or angle iron.

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