Stirring machine spiral supporting plate and supporting plate welding tool

Abstract

The utility model discloses a spiral supporting plate of a stirrer and a supporting plate welding tool, and belongs to the field of stirrer accessory machining. The spiral supporting plate of the stirrer is formed by welding and connecting at least two spiral panels in a spiral shape end to end, each spiral panel comprises a first end plate and a second end plate which are integrally connected to the two ends of the spiral panel, and the first end plate and the second end plate are arranged to be an arc-shaped horizontal plane and an arc-shaped inclined plane respectively. During production, the multi-spiral-layer spiral supporting plate can be split into a plurality of single-layer even half-layer spiral panel units; during welding, the first end plate of one spiral panel and the second end plate of the other spiral panel can be welded and fixed after being flatly laid on the special welding platform side by side, operation is easy, welding cost is low, and precision is high. The problems that an existing stirrer spiral supporting plate is high in production cost due to integrated production, and consistency of design parameters is difficult to guarantee due to split production are solved.

Description

Technical Field

[0001] The utility model belongs to the field of mixer accessories processing, and more specifically relates to a mixer spiral support plate and a support plate welding tool. Background Art

[0002] The spiral agitator is the core component of the horizontal mill and is located in the cylinder. When working, the ore enters the cylinder and is crushed by extrusion, grinding, etc. Therefore, the design spiral parameters of the spiral agitator, including spiral outer diameter, spiral lead, spiral angle, number of spiral heads and wear resistance parameters, are key parameters that affect the performance of the entire mill. For spiral one-piece products, when there are multiple spiral layers, the production equipment requires a lot of redundant design, and the initial cost of the plant and the production cost are high.

[0003] At present, domestic spiral blades are directly welded to the main shaft after being cast from wear-resistant alloy. After being worn, they need to be replaced as a whole or repaired at a high cost. In recent years, mill manufacturers around the world have been developing split spiral agitator structures to facilitate the installation and disassembly of spiral blades and the replacement of interchangeable spiral agitator blades. The split structure must not only be easy to connect and fix, but also ensure that the process parameters of the spiral agitator remain consistent after connection, which is quite difficult.

[0004] In response to the above problems, after searching, the patent document with Chinese patent publication number CN 111889978 A and publication date 2022.02.25 discloses a method for making a spiral support plate for a large vertical mill, which can effectively solve the problem that the existing technology is inconvenient to operate and cannot guarantee the process parameters of the spiral agitator. The technical solution is to obtain the operating parameters by simulating the flow field state of the spiral blade in two-dimensional and three-dimensional computers, and to optimize the blade shape and the blanking size of the blade drag plate by combining the test data and theoretical calculation results. The preliminary blanking diagram is obtained by simulation and reverse deduction of the 3D mold diagram and the sample box diagram, and the matching mold is produced and then used for cold pressing. After the support plate is cut, reasonable deformation compensation is left, and the spiral pallet blanking diagram is further improved. The invention improves production efficiency while strictly controlling quality, reaches high-precision standards, and improves the first-time qualified rate of products. The invention has a complex process, and the molding requires multiple computer simulation compensations, and also requires a lot of redundant designs, and the application scenarios are limited. Utility Model Content

[0005] 1. Problems to be solved

[0006] In view of the problems that the existing integrated production of spiral support plates for mixers has high production costs and the split production makes it difficult to ensure the consistency of design parameters, the utility model provides a spiral support plate for mixer and a support plate welding tool. The two ends of the spiral panel produced after the split are specially set with mutually curved horizontal surfaces and curved inclined surfaces to facilitate welding connection, and then they are welded by special welding tool. The tool is simple and the welding cost is low. Moreover, the same tool can be used to produce the spiral mixing product with consistency and high parameter accuracy.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the utility model adopts the following technical solutions:

[0009] A spiral support plate for a mixer is formed by welding at least two spiral panels in a spiral shape, the head and tail of which are connected to each other. The spiral panel includes an end plate 1 and an end plate 2 which are integrally connected to the two ends of the spiral panel, wherein: the end plate 1 and the end plate 2 are mutually arranged as arc-shaped horizontal surfaces and arc-shaped inclined surfaces. During production, the spiral support plate with multiple spiral layers can be split into multiple single-layer or even half-layer spiral panel units. The design or production of the single-layer or even half-layer spiral panel units is much easier. It is only necessary to solve the consistency problem of the parameters of each spiral after connection. After the single-layer or even half-layer spiral panel is taken out of the furnace, it can be processed into arc-shaped horizontal surfaces and arc-shaped inclined surfaces at both ends through simple hot forging, that is, when one end is an arc-shaped horizontal surface, the other end is an arc-shaped inclined surface; during welding, the end plate 1 of one spiral panel and the end plate 2 of another spiral panel can be laid side by side on the welding platform and then welded and fixed. The operation is simple, no computer simulation compensation is required, and the welding cost is low and the precision is high.

[0010] According to a further technical solution, guide holes and / or fixing holes are vertically perforated on the end plate 1 and the end plate 2 to facilitate stability during welding and ensure the consistency of the product after welding.

[0011] A welding tool for more than one spiral support plate of a mixer includes a welding platform and a slope platform 2, a square platform and a slope platform 1 which are distributed in an arc line from left to right and fixed on the welding platform. The end plates 1 and 2 of the two spiral panels can be adaptively fixed respectively, which is convenient for consistent operation of the welding process.

[0012] For further welding tooling, the heights of slope platform 2, square platform and slope platform 1 decrease in stages, which can also be called sequential descent, and the descending distance is consistent with the spiral lead in the spiral parameters.

[0013] Further welding tooling, the slopes of slope platform 2 and slope platform 1 are adapted to the helix angle of the spiral panel, further ensuring the consistency of the product after welding.

[0014] Further, in the welding tooling, the curvature of the arc line is adapted to the upper projection curvature of the spiral panel and is consistent with the spiral outer diameter in the spiral parameters.

[0015] Further welding tooling, the slope platform 2, square platform and slope platform 1 are provided with baffle rods, screw holes and / or guide rods, which are compatible with the guide holes and / or fixing holes of end plate 1 and end plate 2, so as to facilitate stability during welding and ensure the consistency of the product after welding.

[0016] The further welding tool also comprises a pressing plate (20) for pressing the end plate 1 of a spiral panel and the end plate 2 of another spiral panel onto the square table, so as to avoid displacement of the spiral panels during welding and affect the welding quality.

[0017] Further, in the welding tool, a slot (201) is reserved at the end of the pressing plate (20) to facilitate cooperation with the fixing hole and maintain stability during welding.

[0018] A method for welding a spiral support plate of a mixer, using the above welding tool, the steps are:

[0019] Lay the end plate 1 of one spiral panel and the end plate 2 of another spiral panel side by side on the square table, leaving a welding seam in between;

[0020] Fix the end plate 2 of one spiral panel on the slope of the first ramp, and fix the end plate 1 of the other spiral panel on the slope of the second ramp;

[0021] The two spiral panels are welded together along the weld.

[0022] The whole process is simple to operate and highly practical. It is suitable for both manual welding and welding by welding robots according to designed welding routes and is easy to promote.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] Compared with the existing mixer spiral support plate, which has multiple spiral layers and is too difficult to produce in one piece, and it is difficult to ensure the parameters of each spiral after splitting, the mixer spiral support plate and support plate welding tooling of the utility model split the spiral support plate with multiple spiral layers into multiple single-layer or even half-layer spiral panel units. The design or production of the single-layer or even half-layer spiral panel units is much easier, and it is only necessary to solve the problem of consistency of the parameters of each spiral after connection. After the single-layer or even half-layer spiral panel is taken out of the furnace, it can be processed into arc-shaped horizontal surfaces and arc-shaped inclined surfaces at both ends through simple hot forging, that is, when one end is an arc-shaped horizontal surface, the other end is an arc-shaped inclined surface; when welding, the end plate 1 of one spiral panel and the end plate 2 of the other spiral panel can be placed on the welding platform, and the two can be laid side by side on the welding platform and then welded and fixed. The operation is simple, no computer simulation compensation is required, and the welding cost is low and the precision is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a spiral support plate of a mixer according to a specific embodiment;

[0027] Figure 2 for Figure 1 Side view of

[0028] Figure 3 It is a schematic diagram of the structure of the support plate welding tooling in a specific embodiment;

[0029] Figure 4 A top view of a pressing plate of a specific embodiment;

[0030] Figure 5 A schematic diagram of the application state of the spiral support plate of a mixer according to a specific embodiment;

[0031] Figure 6 A schematic diagram of the application state of the spiral support plate of a mixer according to a specific embodiment;

[0032] Figure 7 It is a schematic diagram of the top view of the structure of the support plate welding tooling of a specific embodiment.

[0033] In the figure: 1. spiral panel;

[0034] 2. End plate 1;

[0035] 3. End plate 2; 31. Guide hole; 32. Fixing hole;

[0036] 10. Welding platform; 101. Arc line;

[0037] 5. Welding line; 6. Stirring rod;

[0038] 11. A ramp; 111. A stop rod; 112. A screw hole;

[0039] 12. Square platform; 121. Second stopper rod; 122. Guide rod; 123. Second screw connection hole;

[0040] 13. Slope 2; 131. Barrier 3;

[0041] 20. Pressure plate; 201. Slot. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with specific embodiments and drawings. It should be noted that, in this document, the terms "upper surface", "left", "right", etc. represent relative position directions. These terms and similar terms are only used to facilitate the description of the embodiments and are not intended to limit the scope of protection of the present invention. In addition, in each of the drawings, the same reference numerals represent the same or corresponding components; and in some drawings, the markings of components that have been clearly marked in other drawings are omitted.

[0043] Example 1

[0044] The spiral support plate of the mixer in this embodiment is formed by welding two or more spiral panels 1 head and tail to each other, and the connection is spiral. In this embodiment, two spiral panels are used, such as Figure 1 , 2 As shown, the spiral panel 1 includes an end plate 1 2 and an end plate 2 3 integrally connected to both ends of the spiral panel 1, wherein: the end plate 1 2 and the end plate 2 3 are mutually arranged as arc-shaped horizontal surfaces and arc-shaped inclined surfaces. That is, when the end plate 1 2 is an arc-shaped flat plate, the end plate 2 3 is an arc-shaped inclined plate; when the end plate 2 3 is an arc-shaped flat plate, the end plate 1 2 is an arc-shaped inclined plate.

[0045] Before welding, the spiral support plate with multiple spiral layers can be split into multiple single-layer or half-layer or even one-third-layer spiral panel 1 units. The layer here can be understood as the spiral lead. The single-layer or half-layer spiral panel 1 unit is much easier to design or produce. The smaller the unit, the smaller the torsional deformation of the spiral, and the easier it is to design and produce. It is only necessary to solve the consistency problem of the spiral parameters after connection. After the single-layer or even half-layer spiral panel 1 is taken out of the furnace, it can be processed into arc-shaped horizontal surfaces and arc-shaped inclined surfaces at both ends through simple hot forging, that is, when one end is an arc-shaped horizontal surface, the other end is an arc-shaped inclined surface; when welding, the end plate 1 2 of a spiral panel 1 and the end plate 2 3 of another spiral panel 1 can be laid side by side on the welding platform 10 and then welded and fixed. The operation is simple, no computer simulation compensation is required, and the welding cost is low and the precision is high.

[0046] Example 2

[0047] The spiral support plate of the mixer in this embodiment has the same basic structure as that of the first embodiment, except that: Figure 1 , 2As shown, the end plates 1 2 and 2 3 are vertically perforated with guide holes 31 and / or fixing holes 32, that is, the end plates 1 2 and 2 3 can both be vertically perforated with guide holes 31 and fixing holes 32, or one of the end plates can be perforated with guide holes 31 and fixing holes 32, or one end plate can be perforated with guide holes 31 and the other end plate can be perforated with fixing holes 32, which can facilitate stability during welding and ensure the consistency of the product after welding, and facilitate the detachable connection of other components after welding, such as connecting wear-resistant parts through fixing holes 32.

[0048] Example 3

[0049] like Figure 3 As shown, the welding tooling of this embodiment can be used to process the spiral support plates of the mixers of embodiments 1 and 2, including a welding platform 10 and a slope platform 2 13, a square platform 12 and a slope platform 11 which are distributed in an arc line 101 from left to right and fixed on the welding platform 10. When welding, the end plates 1 2 and the end plates 2 3 of the two spiral panels 1 can be respectively fixed in an adaptive manner before welding, so as to facilitate the consistent operation of the welding process.

[0050] In order to ensure the welding accuracy, the height of the ramp 13, the square platform 12 and the ramp 11 is lowered in steps, and the descending distance is consistent with the spiral lead of the spiral panel 1 in the spiral parameters. The slope of the ramp 13 and the ramp 11 is adapted to the spiral angle of the spiral panel 1, further ensuring the consistency of the product after welding. The curvature of the arc line 101 is adapted to the upper projection curvature of the spiral panel 1, and is consistent with the curvature of the spiral outer diameter in the spiral parameters. The ramp 13, the square platform 12 and the ramp 11 are provided with a baffle, a screw hole and / or a guide rod 123, which are adapted to the guide hole 31 and / or the fixing hole 32 of the end plate 1 and the end plate 2 3. The screw hole and the fixing hole, the guide rod 123 and the guide hole 31 are used in combination as needed. There is a thread in the fixing hole 32, and the screw hole and the fixing hole are screwed by bolts, which is convenient for stability during welding and ensures the consistency of the product after welding.

[0051] The welding method of the spiral support plate of the mixer in this embodiment uses the above-mentioned welding tool, and the steps are as follows:

[0052] Step 1: Lay the end plate 1 2 of a spiral panel 1 and the end plate 2 3 of another spiral panel 1 horizontally side by side on the square table 12, leaving a welding seam in the middle;

[0053] Step 2: fix the end plate 2 3 of one spiral panel 1 according to the slope of the ramp 11, and fix the end plate 1 2 of another spiral panel 1 according to the slope of the ramp 2 13;

[0054] Step 3: Weld the two spiral panels 1 along the weld to obtain a spiral support plate for the mixer. The weld reserved in the middle generates a welding line 5, as shown in FIG. Figure 5As shown, the mixer spiral support plate is installed on the stirring rod 6, and the entire mixer spiral body can be formed by connecting multiple spiral support plates in sequence up and down.

[0055] The whole process is simple to operate and highly practical. It is suitable for both manual welding and welding by welding robots according to designed welding routes and is easy to promote.

[0056] Example 4

[0057] The basic structure of the spiral support plate of the mixer and its welding tooling in this embodiment is the same as that in embodiment 3, except that: Figure 4 As shown, the welding tool also includes a pressing plate 20, which presses the end plate 1 2 of one spiral panel 1 and the end plate 2 3 of another spiral panel 1 on the square table 12 to prevent the displacement of the spiral panel 1 during welding and affect the welding quality. A slot 201 is reserved at the end of the pressing plate 20 to facilitate the cooperation with the fixing hole 32 to maintain stability during welding.

[0058] The welding method of the spiral support plate of the mixer in this embodiment uses the above-mentioned welding tool, and the steps are as follows:

[0059] Step 1, lay the end plate 1 2 of a spiral panel 1 and the end plate 2 3 of another spiral panel 1 horizontally side by side on the square table 12. When laying them flat, pay attention to pressing the outer sides of the end plate 1 2 and the end plate 2 3 against the two baffle rods 2 121 fixed vertically on the surface of the square table 12; the threaded guide rod 122 fixed vertically on the surface of the square table 12 passes through the guide hole 31 of the left spiral panel 1; after aligning the fixing hole 32 of the right spiral panel 1 with the screw hole 2 123 reserved on the surface of the square table 12, insert the bolt, reserve a weld between the end plate 1 2 and the end plate 2 3, and then press the pressure plate 20 horizontally on the weld. When pressing, the threaded guide rod 122 and the bolt are respectively arranged in the slots 201 on the left and right sides of the pressure plate 20, and then the pressure plate 20 is tightened by the nut.

[0060] Step 2: fix the end plate 2 3 of one spiral panel 1 according to the slope of the ramp 11, and fix the end plate 1 2 of the other spiral panel 1 according to the slope of the ramp 13. When fixing, the outer side of each spiral panel 1 is pressed against the blocking rods on each ramp, i.e., blocking rod 1 111 and blocking rod 3 131, and then aligned with the corresponding fixing hole 32 and the screw hole 1 112 and fastened by bolts.

[0061] Step 3: First weld the seams on the front and rear sides of the pressing plate 20, then remove the pressing plate 20, and then weld the seams left after the pressing plate 20 is removed. After the two spiral panels 1 are welded together along the weld seams, the weld seams reserved in the middle form a welding line 5.

[0062] Step 4: After removing the bolts of each plate, a spiral support plate of the mixer is generated which is welded and connected to two spiral panels 1.

[0063] Step 5: Repeat the above steps to weld multiple pairs of spiral panels 1 welded to the mixer spiral support plates.

[0064] Step 6: Connect multiple mixer spiral trays to generate a whole spiral mixer spiral tray.

[0065] Example 5

[0066] The basic structure of the spiral support plate and welding fixture of the mixer in this embodiment is the same as that of the embodiment 4, except that: Figure 7 As shown, the welding tools are symmetrically arranged in four groups distributed on the welding platform 10, and can weld and connect four pairs of spiral panels 1 at the same time, and then connect them into Figure 6 The spiral shown in FIG. 1 , thereby improving production efficiency.

[0067] The examples of the present utility model are only descriptions of the preferred implementation methods of the present utility model, and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, various modifications and improvements made to the technical solutions of the present utility model by engineers and technicians in this field should all fall within the protection scope of the present utility model.

Claims

1. A spiral support plate for a mixer, comprising at least two spiral panels (1) welded to each other in a spiral shape, characterized in that: The spiral panel (1) comprises an end plate 1 (2) and an end plate 2 (3) integrally connected to both ends of the spiral panel (1), wherein: The end plate 1 (2) and the end plate 2 (3) are arranged as arc-shaped horizontal surfaces and arc-shaped inclined surfaces respectively. When welding, the end plate 1 (2) of one spiral panel (1) and the end plate 2 (3) of another spiral panel (1) are welded and fixed on the welding platform (10).

2. The mixer spiral support plate according to claim 1, characterized in that: The end plate 1 (2) and the end plate 2 (3) are vertically perforated with guide holes (31) and / or fixing holes (32).

3. A welding tool for the spiral support plate of a mixer according to claim 1 or 2, characterized in that: The invention comprises a welding platform (10), and a second slope platform (13), a square platform (12) and a first slope platform (11) which are distributed in an arc line (101) from left to right and fixed on the welding platform (10).

4. The welding tool according to claim 3, characterized in that: The heights of the second ramp (13), the square platform (12) and the first ramp (11) decrease in stages.

5. The welding tool according to claim 3, characterized in that: The slopes of the second ramp (13) and the first ramp (11) are adapted to the helical angle of the spiral panel (1).

6. The welding tool according to claim 3, characterized in that: The curvature of the arc line (101) is adapted to the upper projection curvature of the spiral panel (1).

7. The welding tool according to claim 3, characterized in that: The second ramp platform (13), the square platform (12) and the first ramp platform (11) are provided with blocking rods, screw holes and / or guide rods (122).

8. The welding tool according to any one of claims 3 to 7, characterized in that: It also includes a pressing plate (20) for pressing the end plate 1 (2) of a spiral panel (1) and the end plate 2 (3) of another spiral panel (1) onto the square platform (12).

9. The welding tool according to claim 8, characterized in that: A slot (201) is reserved at the end of the pressing plate (20).

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