CN117324670A - Processing method of wear-resistant plate and wear-resistant plate processed by same - Google Patents
Processing method of wear-resistant plate and wear-resistant plate processed by same Download PDFInfo
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- CN117324670A CN117324670A CN202311629549.2A CN202311629549A CN117324670A CN 117324670 A CN117324670 A CN 117324670A CN 202311629549 A CN202311629549 A CN 202311629549A CN 117324670 A CN117324670 A CN 117324670A
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- 238000003672 processing method Methods 0.000 title abstract description 6
- 238000003801 milling Methods 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000005260 corrosion Methods 0.000 claims abstract description 27
- 230000007797 corrosion Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 32
- 238000003466 welding Methods 0.000 claims description 31
- 238000003754 machining Methods 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 35
- 238000013461 design Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 16
- 239000012530 fluid Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Abstract
The invention belongs to the technical field of wear-resistant plate processing, and particularly discloses a processing method of a wear-resistant plate and the wear-resistant plate processed by the same, wherein the method comprises the following steps: clamping the first extending edge on the numerical control machine tool to fix the plate body, and milling the second extending edge and the plate body to a first reserved size; milling the second extension edge again according to the contour line of the second groove body to form the second groove body and exposing the first groove body along the preset direction; milling the second extending edge for the third time according to the contour line of the first groove body to form a first groove body communicated with the second groove body, and milling the second extending edge for the fourth time to the set size of the second extending edge; clamping the second extending edge on the numerical control machine tool to fix the plate body, primarily milling the first extending edge to a second reserved size, and respectively milling the plate body for the second time and the first extending edge to respective set sizes; has the following advantages: the anti-falling structure of the machined wear-resistant plate increases the bonding strength with the corrosion-resistant pump, simultaneously limits the freedom degree of the wear-resistant plate, and more effectively prevents the wear-resistant plate from falling off.
Description
Technical Field
The invention relates to the technical field of wear-resistant plate processing, in particular to a processing method of a wear-resistant plate and the wear-resistant plate processed by the same.
Background
In fields of chemical industry, pharmacy, petroleum, electronics, environmental protection, etc., various devices are widely used, and the application conditions of the devices are different. The wear-resistant plate applied to the corrosion working condition is an important part. For example, corrosion-resistant pumps for transporting and handling various corrosive media, which employ special materials and constructions for handling the corrosive media, and whose structures and internal flow passages are designed to be smooth, dead-angle free, easy to clean, to reduce media residue and to prevent clogging. The wear-resistant plate is applied to certain working conditions with relatively high content of particles or impurities, and meanwhile, the conveying medium of the working conditions is relatively high in corrosiveness, so that sealing by using a sealing ring is not allowed, and the wear-resistant plate is used for an inner flow passage and important friction parts, so that the wear-resistant performance and the service life of the wear-resistant plate are improved.
Such conditions require the use of semi-open or open impellers, which do not allow for sealing with a sealing ring, and therefore use a wear plate feature. The scheme adopted conventionally is to process semicircular grooves on a wear-resistant plate, and then weld the wear-resistant plate on a corrosion-resistant pump by using three semicircular grooves as welding positions. This scheme uses the semicircle groove structure, but this semicircle groove can hinder the swing of welding rod and the lathe cutter swing in processing at welding process, is unfavorable for the cladding of parent metal and welding material simultaneously, does not make antifriction plate and corrosion-resistant pump form effectual combination to in the actual processing, cause holistic structural parameter to correspond easily.
For this purpose, a method for processing wear-resistant plates is proposed to solve the above-mentioned problems.
Disclosure of Invention
The present invention aims to provide a wear plate to solve or improve at least one of the above technical problems.
In view of this, a first aspect of the present invention is to provide a method for processing a wear plate.
A second aspect of the present invention is to provide an anti-falling structure of a wear plate.
The first aspect of the present invention provides a method for processing a wear-resistant plate, which is used for processing a plate body of an anti-falling structure of the wear-resistant plate, and a first extending edge and a second extending edge which are separately arranged on the plate body, wherein the method for processing the anti-falling structure of the wear-resistant plate comprises the following steps: fixing the plate body by clamping the first extending edge on a numerical control machine tool, and primarily milling the surfaces of the second extending edge and the plate body to a first reserved size; drawing contour lines of a first groove body and a second groove body on the surface of the second extending edge, milling the second extending edge for the second time according to the contour lines of the second groove body to form the second groove body and exposing the first groove body along a preset direction; milling the surface of the second extension for the third time according to the contour line of the first groove body so as to form the first groove body communicated with the second groove body, and milling the surface of the second extension edge for the fourth time to the set size of the second extension edge; the plate body is fixed by clamping the second extending edge on the numerical control machine tool, the surface of the first extending edge is milled to a second reserved size in a preliminary mode, the surfaces of the plate body and the first extending edge are milled for the second time to the set sizes of the plate body and the first extending edge respectively, and the wear-resisting plate is applied to the corrosion-resisting pump.
In any of the above technical solutions, setting a numerical range of the first reserved size and the second reserved size according to a material type of the plate body; the first reserved size is a difference value between the second extending edge and the surface of the plate body and the set size, and the value range of the first reserved size is 1.5mm-2.5mm; the second reserved size is a difference value between the surface of the first extending edge and the set size, and the value range of the first reserved size is 1.5mm-2mm.
In any of the above solutions, the preset direction and the third milling direction of the first groove body have an included angle smaller than ninety degrees.
In any of the above technical solutions, a third reserved size is provided between the set size of the plate body and the assembly size of the plate body on the corrosion-resistant pump; the value range of the third reserved size is 0.3-0.8mm.
A second aspect of the present invention provides a wear plate having an anti-falling structure, the anti-falling structure comprising a plate body, a surface middle part of the plate body having a through hole, the through hole being communicated with an inner cavity of the corrosion-resistant pump; the plate body extends outwards from the through hole along the axial direction of the inner cavity so as to form a first extension edge; the side wall of the plate body extends outwards along the radial direction of the inner cavity to form a second extension edge; the first groove body is arranged on the second extending edge, penetrates through the second extending edge along the axial direction of the inner cavity and is communicated with the inner cavity along the radial direction of the inner cavity; the first groove body is provided with two first inner walls which are parallel to each other, and the two first inner walls are connected with the side wall of the second extension edge; the first groove body is also provided with second inner walls which are respectively connected with the two first inner walls, and the second inner walls are perpendicular to the two first inner walls; the second groove body is arranged on the second extension edge, is communicated with the inner cavity along the axial direction of the inner cavity, and is communicated with the first groove body along the radial direction of the inner cavity; the second groove body is provided with a third inner wall, the third inner wall is connected with the second inner wall, and a first included angle is formed between the third inner wall and the axis of the inner cavity.
In any of the above technical solutions, the first groove body is provided with a plurality of grooves along the circumferential direction of the second extending edge, and a second included angle is formed between adjacent first groove bodies; wherein the value of the second included angle is 100 ° - 130 ° 。
In any of the above technical solutions, the outer wall of the first extending edge and the side wall of the second extending edge away from the second groove body are respectively attached to the surface of the inner cavity, and one end of the first inner wall away from the third inner wall is fixedly connected with the surface of the inner cavity, so that the plate body is fixed on the surface of the inner cavity.
In any of the above technical solutions, a preset interval is provided between the sidewall of the second extending edge and the surface of the inner cavity along the radial direction of the inner cavity.
In any of the above technical solutions, the first inner wall is fixed to the surface of the inner cavity by welding, and a limit key is formed along the axial direction of the inner cavity after welding; at least one part of the limit key protrudes from the second extending edge along the radial direction of the inner cavity and is positioned in the preset interval.
In any of the above technical solutions, the limiting key has two first side walls, one of the first side walls is fixedly connected with the surface of the inner cavity, and the other first side wall corresponds to the connection position between the second inner wall and the third inner wall along the radial direction of the inner cavity.
Compared with the prior art, the invention has the following beneficial effects:
compared with the existing structure, the invention has obvious advantages in processing, and the invention can be processed in a common milling machine by only needing a simple auxiliary tool, thereby saving electric energy. In the prior art, the numerical control machine tool is required to process, the feed amount is not large, the efficiency is low, after improvement, the feed amount and the cutting speed can be increased, and the production efficiency is improved.
As the slope opening is added, the weldability is greatly enhanced, and meanwhile, the welding strength is also enhanced, the abrasion-resistant plate can be effectively prevented from falling off, and the reliability of the pump device in the running process is greatly ensured.
After the structure is upgraded, the bonding strength of the wear-resisting plate and the corrosion-resisting pump is increased, and meanwhile, the freedom degree of the wear-resisting plate is limited, so that the wear-resisting plate is prevented from falling off more effectively.
Additional aspects and advantages of embodiments according to the invention will be apparent from the description which follows, or may be learned by practice of embodiments according to the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart of a processing method according to an embodiment of the present invention;
FIG. 2 is a schematic view of an anti-falling structure of a wear plate according to another embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a schematic view showing a half-section of an anti-drop structure of a wear plate according to another embodiment of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at B;
FIG. 6 is a schematic axial cross-sectional view of a plate body and a corrosion resistant pump according to another embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 1 to 6 is:
1 plate body, 101 through hole, 102 first extension limit, 103 second extension limit, 104 first cell body, 105 second cell body, 106 first inner wall, 107 second inner wall, 108 third inner wall, 2 corrosion-resistant pump.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1-6, a method of manufacturing a wear plate according to some embodiments of the present invention is described below.
An embodiment of the first aspect of the present invention provides a method for processing a wear plate. In some embodiments of the invention, as shown in FIG. 1, the processing method includes the steps of:
s101, fixing the plate body by clamping the first extending edge on the numerical control machine tool, and primarily milling the surfaces of the second extending edge and the plate body to a first reserved size.
Specifically, a proper clamp is used for clamping the first extension edge on the numerical control machine tool, so that the stability of the plate body is ensured and vibration or displacement in machining is prevented; setting a zero point or a reference point on a numerical control machine tool, wherein a known position of a plate body is usually selected as a starting point of machining; a suitable milling cutter is selected according to the kind of material and the amount of material removed. Cemented carbide milling cutters are commonly used for most metallic materials; inputting a milling path into a numerical control system, wherein the program comprises parameters such as milling depth, feeding rate, cutting speed and the like; removing most redundant materials on the surfaces of the second extension edge and the plate body, and processing to a size slightly larger than the reserved size; checking the size of the workpiece after rough milling to ensure that the allowable machining size range is not exceeded; any chips or burrs are removed and the next fine milling operation is prepared.
As can be seen, by fixing the first extension edge, excess material can be removed quickly and coarsely, preparing the surface for subsequent fine milling; the vibration in the processing process can be reduced due to the fixation stability, so that the processing precision is improved; a certain reserved size is reserved during rough milling, adjustment can be performed during fine milling, and material waste caused by machining errors is reduced; most of materials are firstly removed through rough milling, so that the load of a cutting tool during finish milling can be reduced, and the service life of the tool is prolonged; the stable clamping mode can reduce the risk of falling or moving of the workpiece in the machining process, and improves the operation safety.
S102, the contour lines of the first groove body and the second groove body are drawn on the surface of the second extending edge, the second extending edge is milled for the second time according to the contour lines of the second groove body, so that the second groove body is formed, and the first groove body is exposed along the preset direction.
In particular, the contour lines of the first and second grooves are marked on the second extension side surface using a marking tool or numerical control programming. The marking is clear, and the subsequent processing and positioning are convenient; programming and setting a milling path on the numerical control machine tool, wherein the path is performed along the contour line of the second groove body; selecting a proper milling cutter according to the width and depth of the groove body, and if the groove body is small or has a special shape, a special milling cutter may need to be used; a positioning system of the numerical control machine tool is used for ensuring that the milling cutter can accurately mill along the marked contour line; and starting the numerical control machine tool, and milling along the set path. Care is taken to adjust the appropriate feed rate and cutting speed to prevent tool damage and workpiece burn; after milling, checking the size and shape of the second groove body to ensure that the second groove body meets the design requirement; by precisely milling the second groove body, a portion of the first groove body should be exposed for further processing as needed; all chips are removed, and it is checked whether burrs are generated, and if necessary, a deburring process is performed.
The shape and the size of the second groove body can be ensured to be accurate by precisely milling along the contour line, so that the design requirement is met; numerical control milling is faster than manual operation, so that the processing efficiency can be greatly improved; the numerical control machine tool can ensure that the processing quality of each workpiece is consistent, especially in mass production; the accurate milling can reduce or eliminate the subsequent manual finishing work, so that the time and the cost are saved; by numerical control milling, more complex groove shapes can be processed, and the functionality and the aesthetic property of the product are improved.
And S103, milling the surface of the second extending edge for the third time according to the contour line of the first groove body so as to form the first groove body communicated with the second groove body, and milling the surface of the second extending edge for the fourth time to the set size of the second extending edge.
Specifically, on the surface of the second extension edge, according to the design drawing or CAD model of the first groove body, confirming or marking out the contour line of the first groove body again; inputting a milling path of the first groove body into a programming system of the numerical control machine tool. Ensuring that the path accurately corresponds to the contour line and setting proper milling depth so as to ensure that the first groove body is communicated with the second groove body; selecting a milling cutter of a proper size and type according to the requirements of the groove body, wherein the milling cutter can comprise a flat head milling cutter or a ball head milling cutter, so that the cutter can process the required contour and depth of the groove body; starting the numerical control machine tool, and milling the first groove body according to a program. Proper feeding speed and spindle rotating speed are adjusted according to material characteristics, so that milling efficiency and milling quality are ensured; during milling, the connection condition of the groove bodies is observed, and the first groove body is ensured to be communicated with the second groove body; setting the depth and the path of the milling cutter according to the final design size of the second extension edge, and performing fourth milling to ensure that the second extension edge meets the requirements of the final size and the surface roughness; after milling, checking the size and the surface quality of the groove body by using a measuring tool such as a caliper, a height gauge or a three-coordinate measuring machine and the like so as to ensure that the design specification is met; and (3) removing chips and cooling liquid on the workpiece, checking whether burrs need to be removed, and ensuring the surface cleaning of the workpiece.
The milling path is precisely controlled, so that the size and the position of the groove body can be ensured to be precise, and the design requirement is met; the numerical control milling can continuously finish a plurality of steps, so that the clamping times of workpieces are reduced, and the processing efficiency is improved; the consistency of the processing quality and the size of each workpiece can be ensured by using the numerical control machine tool, and the numerical control machine tool is more important in mass production; the machine tool automatically completes the processing, thereby reducing the manual labor of operators and the complexity of the operation; automated milling reduces the need for manual intervention and reduces the safety risk during operation.
S104, primarily milling the surface of the first extending edge to a second reserved size by clamping the second extending edge fixing plate body on the numerical control machine tool, and respectively milling the surfaces of the plate body and the first extending edge to the set sizes of the plate body and the first extending edge for the second time.
Specifically, the second extending edge of the plate body is fixed on a numerical control machine tool. Ensuring the stability of the workpiece by using a proper clamp to prevent vibration or displacement during milling; determining an initial position of the first extension edge using a probing function of the machine tool or a manual measuring tool; programming or calling a pre-programmed program in a control system of the machine tool, wherein the pre-programmed program comprises parameters such as milling path, depth, feeding speed, rotating speed and the like; and primarily milling the first extension edge to reach the reserved size according to the program. The reserved size leaves a space for the correction of the subsequent fine processing and the finished size; after the preliminary milling, measuring the workpiece to determine whether the reserved size is reached, and adjusting the machine tool setting or tool compensation if necessary; milling the plate body and the first extension edge by a finish milling process until the final set size and surface precision requirements are met; after milling is completed, the workpiece is cleaned, all chips are removed, and dimensional and surface quality checks are again performed.
The numerical control program is used for controlling the machining process, so that the machining precision can be ensured, and the consistency and interchangeability of products can be improved; the numerical control machine tool can continuously work in an unattended mode, so that the production efficiency is greatly improved, and the numerical control machine tool is more obvious in mass production; the numerical control program can be quickly changed to adapt to different processing requirements, so that the flexibility of production is improved; the manual operation requirement is reduced, one operator can manage a plurality of machine tools, and the labor cost is reduced; the direct contact between an operator and a machine tool is reduced, and the safety risk of a workplace is reduced.
According to the machining method of the wear-resistant plate, the first groove body and the second groove body are machined between the preliminary milling step and the final milling step according to the set size, so that the influence on the size after final milling in the process of opening is reduced, and a space can be reserved for subsequent size machining and shaping to the greatest extent by opening the groove body between the two milling steps.
In any of the above embodiments, the numerical ranges of the first reserved size and the second reserved size are set according to the material type of the plate body.
The first reserved size is the difference between the second extending edge and the surface of the plate body and the set size, and the value range of the first reserved size is 1.5mm-2.5mm.
The second reserved size is the difference between the surface of the first extending edge and the set size, and the value range of the first reserved size is 1.5mm-2mm.
In this embodiment, the material type of the plate body should be considered when setting the first and second predetermined dimensions, because different materials may have different characteristics such as thermal expansion coefficient, hardness, cutting force, etc. at the time of processing. These characteristics affect machining accuracy and surface quality.
The first predetermined dimension (1.5 mm-2.5 mm) is typically set at 1.5mm to 2.5mm for the second extension edge and the surface of the plate body to allow sufficient material for finishing the fine machining. This range allows for:
thermal expansion: the heat generated during processing may expand the material, resulting in a larger size. The reserved size ensures that the material remains within the set size after cooling.
Material removal rate: for harder or abrasive materials, larger gauge sizes may be required to avoid excessive tool wear and workpiece damage.
Surface treatment: if the final product requires additional surface treatments (such as heat treatments or coatings), more material needs to be left to compensate for the effects of these processes.
The second reserved size is 1.5mm-2mm: the reserved size of the first extension edge is usually small, set at 1.5mm to 2mm, mainly because:
cutter feed direction: the first extension edge is machined in a smaller area and requires finer control to avoid tool shifting.
Processing stability: the smaller reserved size means that less material is removed from the tool during machining, which can reduce vibration during machining, thereby improving machining stability.
Final precision requirements: if the first extension edge is related to assembly accuracy or functional interface, tighter dimensional control is often required.
The above-mentioned arrangement of the reserved size provides necessary room for subsequent fine processing, and ensures the accuracy of the size of the final product; the reserved size is adjusted according to different material characteristics, so that the method can adapt to the change of the material in the processing process; the proper reserved size can reduce the amount of the disposable removal material, thereby prolonging the service life of the cutter; the reasonable reserved size is preset, so that excessive trial cutting and adjustment time can be avoided, and the production efficiency is improved; by stepwise removal of material, the surface quality of the workpiece can be controlled, avoiding surface defects caused by overheating and stress concentration.
Through reasonable setting of reserved size, the quality and the precision of the product can be guaranteed, and the production efficiency and the economy can be improved.
In any of the above embodiments, the preset direction has an included angle smaller than ninety degrees with the third milling direction of the first groove body.
In this embodiment, by providing a predetermined direction having an included angle of less than ninety degrees with the third milling direction of the first slot, the tool can be provided with more selectable feed angles during milling of the first slot, milling at an oblique angle may increase the strength of the slot, such geometry may result in stress distribution over a larger area; bevel milling facilitates chip evacuation, especially in deep groove or blind hole machining, which can avoid chip clogging and excessive wear; when the groove body is used for being matched with a limit key cooled after cladding, the bevel angle can be used for ensuring better matching and self-locking performance and avoiding loosening.
The design of the bevel angle can reduce vibration in the milling process, and the feeding path of the cutter is smoother, so that the smoothness of the processing surface is improved; the bevel milling can realize more machining shapes and characteristics in a limited space, so that the flexibility of design is improved; during assembly of the components, the bevel contact surfaces help to disperse contact pressure and reduce wear caused by contact stress concentration; cutting forces can be more reasonably distributed through a preset bevel milling direction, so that the abrasion of the tool is reduced and the service life of the tool is prolonged; the processing path of the bevel angle can improve the material removal rate, and improve the processing efficiency while ensuring the processing quality.
In any of the above embodiments, the plate body has a third predetermined dimension between the set dimension of the plate body and the assembled dimension of the plate body on the corrosion-resistant pump.
The value range of the third reserved size is 0.3-0.8mm.
In this embodiment, even in high-precision numerical control machining, machining errors remain. The reserved size can be used as a fault-tolerant area to ensure that the components still meet the functional requirements, and can ensure that the position accuracy and the movement accuracy of the assembly parts can be ensured even under the condition of slight errors, and the third reserved size is eliminated after assembly, so that the plate body has a processing room after assembly, and particularly the inner wall arc surface of the through hole of the plate body is processed.
Embodiments of the second aspect of the present invention provide an anti-falling structure for a wear plate of a corrosion-resistant pump. In some embodiments of the present invention, as shown in fig. 2-5, the wear plate anti-drop structure comprises:
the middle part of the surface of the plate body 1 is provided with a through hole which is communicated with the inner cavity of the corrosion-resistant pump 2; along the axial direction of the inner cavity, the plate body 1 extends outwards from the through hole to form a first extension edge 102; the side wall of the plate body 1 extends outwards along the radial direction of the inner cavity to form a second extension edge 103.
The first groove body 104 is arranged on the second extension edge 103, and the first groove body 104 penetrates through the second extension edge 103 along the axial direction of the inner cavity and is communicated with the inner cavity along the radial direction of the inner cavity; the first groove 104 is formed with two first inner walls 106 parallel to each other, and the two first inner walls 106 are connected with the side wall of the second extension edge 103; the first groove 104 is further formed with second inner walls 107, the second inner walls 107 are respectively connected with the two first inner walls 106, and the second inner walls 107 are perpendicular to the two first inner walls 106.
The second groove body 105 is arranged on the second extension edge 103, and the second groove body 105 is communicated with the inner cavity along the axial direction of the inner cavity and is communicated with the first groove body 104 along the radial direction of the inner cavity; the second groove 105 is formed with a third inner wall 108, the third inner wall 108 is connected with the second inner wall 107, and the third inner wall 108 forms a first included angle with the axis of the inner cavity.
The invention provides a wear-resisting plate anti-falling structure of a corrosion-resisting pump, wherein a wear-resisting plate is welded with the corrosion-resisting pump 2, a plate body 1 is provided with a through hole positioned in the middle of the surface, and the through hole is connected with an inner cavity of the corrosion-resisting pump 2. Along the axial direction of the inner cavity, the plate body 1 extends outwards from the through hole to form a first extending edge 102. The plate body 1 extends outwardly from the side wall in the radial direction of the cavity to form a second extension 103 for achieving specific fluid control or increasing pump performance. By means of the second extension 103 and the first extension 102 of the plate body 1, the flow path, velocity profile or pressure profile of the medium in the inner chamber can be changed to meet specific engineering requirements. For example, by adjusting the position and size of the through holes, the position and direction of the medium entering the lumen can be changed, thereby affecting the flow direction and velocity of the fluid. Through the design of extension limit, can make the better cooperation between corrosion-resistant pump 2 and the plate body 1 fixed to improve the flow balance of liquid, reduce vortex and vortex, improve the efficiency and the stability of pump.
The first groove 104 is located on the second extending side 103, penetrates the second extending side 103 along the axial direction of the inner cavity, and communicates with the inner cavity along the radial direction of the inner cavity. The first channel 104 forms two mutually parallel first inner walls 106, which are connected to the side walls of the second extension 103. The first groove 104 furthermore forms a second inner wall 107, which second inner wall 107 is connected to the two first inner walls 106 and is perpendicular to the two first inner walls 106, the first groove 104 being present for fixing the plate 1 to the inner cavity surface. By the arrangement of the first inner walls 106, the perpendicular arrangement of the second inner wall 107 and the two first inner walls 106 serves to further guide the shaping effect after the welding material is melted. They can change the flow direction of the welding material melt so that the welding material can more easily join the second extension 103 and the inner cavity surface.
The groove is designed into a rectangular key groove, so that the axial rotation of the wear plate due to looseness can be limited. The rectangular key way can also limit the radial displacement of the plate 1.
And then consider weldability. Weldability is not considered in the prior art. On the basis that the first groove body 104 is a rectangular key groove, the second groove body 105 is additionally arranged, and a first included angle is formed between the third inner wall 108 and the axis of the inner cavity, so that an inclined groove is additionally formed behind the rectangular key groove, and the inclined groove is convenient for swinging of welding rods, so that the welding rods are free from the restriction of the anti-corrosion pump 2 spigot on swinging of the welding rods. In the welding process, welding rods can contact two sides of the rectangular key groove, so that the wear-resisting plate and the corrosion-resisting pump 2 are fully fused, and the bonding strength is higher.
The welding material can be fully clad into the rectangular key groove, and after the welding material in the rectangular key groove reaches the required height, a limit key is formed after the welding material in the rectangular key groove is molded, so that the bonding strength is enhanced, and meanwhile, the degree of freedom of the wear-resisting plate is limited.
In any of the above embodiments, the first groove 104 is formed with a plurality of grooves along the circumferential direction of the second extending edge 103, and a second included angle is formed between two adjacent first grooves 104.
Wherein the value of the second included angle is 100 ° - 130 ° 。
In this embodiment, the second included angle has a value in the range of 100 ° to 130 °. Specifically, the first slot 104 is opened with three values of 120 degrees, and the angle range is determined according to specific application requirements and design requirements. The number of the connecting fixed points of the control panel body 1 and the inner cavity can be controlled by adjusting the size of the second included angle so as to meet the requirements of the corrosion-resistant pump 2 with different sizes.
In any of the above embodiments, the outer wall of the first extending edge 102 and the side wall of the second extending edge 103 facing away from the second slot 105 are respectively attached to the surface of the inner cavity, and one end of the first inner wall 106 facing away from the third inner wall 108 is fixedly connected with the surface of the inner cavity, so that the plate body 1 is fixed on the surface of the inner cavity.
In this embodiment, the outer wall of the first extension 102 faces away from the side wall of the second slot 105 and conforms to the surface of the cavity. Meanwhile, one end of the first inner wall 106 is far away from the third inner wall 108 and is fixedly connected with the surface of the inner cavity, so that the plate body 1 is fixed on the surface of the inner cavity, and the plate body 1 can be ensured to be firmly fixed on the surface of the inner cavity, and is prevented from moving or falling off in the operation process of the pump. By the cooperation of the outer wall of the first extension 102 with the side wall of the second slot 105, a better fixation and support is provided. The fixed connection between the first inner wall 106 and the inner cavity surface further increases the stability of the plate body 1, which is used for fixing and stabilizing the application scenario of the position of the plate body 1, so as to ensure that the plate body 1 can properly perform the required fluid control or other functions in the operation process of the pump.
In any of the above embodiments, a predetermined interval is provided between the sidewall of the second extension 103 and the surface of the inner cavity along the radial direction of the inner cavity.
In this embodiment, a preset interval is provided between the side wall of the second extension 103 and the surface of the inner cavity along the radial direction of the inner cavity, and in order to maintain a certain gap or clearance between the plate body 1 and the inner cavity when the pump is fixed, the interval can enable the fluid after the welding material is melted to flow out, cool and solidify additionally in the preset interval, so as to ensure additional fixing and limiting of the circumference of the plate body 1. The size and design of the preset interval depends on the specific application requirements and engineering requirements to ensure the efficiency and stability of the pump system.
In addition, the preset interval can also help to avoid direct contact between the plate body 1 and the inner cavity surface, reduce the chance of friction and abrasion of the plate body 1, and prolong the service life of the plate body 1.
Specifically, the preset interval is a ratio of the length along the radial direction of the inner cavity to the length of the first inner wall 106 of 0.3-0.7, and specifically 0.4.
In any of the above embodiments, the first inner wall 106 is fixed to the surface of the inner cavity by welding, and a limit key is formed along the axial direction of the inner cavity after welding.
At least a portion of the limit key protrudes from the second extending edge 103 along the radial direction of the inner cavity and is located in the preset interval.
In this embodiment, the first inner wall 106 is fixed to the surface of the inner cavity by welding, and a limit key is formed along the axial direction of the inner cavity after welding. In the radial direction of the inner cavity, a part of the at least one limit key protrudes from the second extending edge 103 and is located in a preset interval, so that the connection between the first inner wall 106 and the inner cavity surface can be ensured to be stable and reliable. Welding is a common method that provides a strong connection and ensures tightness. Through welded fastening, a firm joint is formed between the first inner wall 106 and the inner cavity surface, specifically, a three-section welding section is formed between the two first inner walls 106 and one second inner wall 107 and the inner cavity surface, so that the overall strength after welding is enhanced, the influence on other subsequent parts after a certain point defect in welding is reduced, and the loosening or moving of the pump in the operation process is prevented.
Meanwhile, the limit key formed after welding can provide additional positioning and limiting functions. Wherein a portion of the at least one limit key protrudes from the second extension 103 and is located within a predetermined interval. The design can ensure the accurate positioning of the position of the plate body 1 and prevent the plate body 1 from accidentally shifting or falling off in the working process.
In any of the above embodiments, the limit key has two first sidewalls along the axial direction of the inner cavity, one of the first sidewalls is fixedly connected with the surface of the inner cavity, and the other first sidewall corresponds to the connection position between the second inner wall 107 and the third inner wall 108 along the radial direction of the inner cavity.
In this embodiment, the limit key has two first side walls along the axial direction of the lumen. Wherein, the surface fixed connection of a first lateral wall and inner chamber, the junction that another first lateral wall corresponds second inner wall 107 and third inner wall 108 along the radial direction of inner chamber can provide extra restriction and location effect, ensures that plate body 1 keeps stable position in the operation in-process of pump. Through the fixed connection of first lateral wall and inner chamber surface, limit key has formed firm connection with the inner chamber, prevents its not hard up or removal. The other first sidewall is located in the radial direction of the inner cavity and corresponds to the connection between the second inner wall 107 and the third inner wall 108. This design provides a more effective limiting and positioning effect in order to increase the contact area between the limit key and other components of the lumen. By correspondence with the junction of the second inner wall 107 and the third inner wall 108, the limit key can accurately position and limit the movement of the plate body 1 at this position.
The stability and positioning accuracy of the plate body 1 can be improved to meet specific engineering requirements, and it is important to ensure the connection strength and stability of the limit key and the inner cavity to ensure the reliability of the plate body 1 during the running of the corrosion-resistant pump.
In any of the above embodiments, the first included angle has a value of 20 ° - 45 ° 。
In this embodiment, the first included angle has a value in the range of 20 ° to 45 °. This angle refers to the angle between the third inner wall 108 and the second inner wall 107. The magnitude of the first included angle is determined according to specific application requirements and design requirements. Through the size of adjusting first contained angle, can set for different processing equipment to in the processing easier.
An embodiment of the third aspect of the invention proposes a corrosion resistant pump 2. In some embodiments of the invention, as shown in fig. 6, the corrosion-resistant pump 2 includes the wear plate anti-drop structure of any of the embodiments described above.
The corrosion-resistant pump 2 has an integral center of gravity, and the layout axes R1 of the first tank 104 and the second tank 105 are overlapped along the integral center of gravity of the corrosion-resistant pump 2, the inner cavity has a circulation axis R2 for fluid to flow, the radial distance between the layout axes R1 and the circulation axis R2 is R, the limit key has a geometric center G along the inner cavity axis, the radial distance between the geometric center G of the limit key and the layout axis is GR1, the geometry of the limit key is setThe included angles formed by the radial connection lines of the center G and the distribution axis R1 and the circulation axis R2 are respectivelyαThe radial distance L between the geometric center G of the limit key and the circulation axis R2 satisfies the following conditions:
；
for a plurality of limit keys distributed in the circumferential direction, the radial distances between the limit keys and the layout axle center R1 are respectively as follows、/>、/>、、、When n is equal to 3, the following relationship can be derived:
；
；
。
in this embodiment, overall center of gravity stability: the corrosion resistant pump 2 has an overall center of gravity which helps to improve the stability of the pump. The stable corrosion-resistant pump 2 can reduce vibration and resonance, thereby extending the life of the apparatus and improving the working efficiency.
The arrangement of the plurality of grooves with the arrangement axis R1 overlapping the flow axis R2 ensures that the components inside the corrosion-resistant pump 2 are arranged in a relatively concentrated position. This may reduce imbalance caused by misalignment of the components.
By controlling the radial distance GR1 of the geometric center G of the limit key from the layout axis R1, the performance of the fluid pump, such as flow, head and efficiency, can be adjusted. Helping to optimize the design of the pump to meet specific engineering requirements.
Control of the included angle α between the geometric center G of the limit key, the layout axis R1, and the flow axis R2 may affect the flow direction and velocity distribution of the fluid. By adjusting these parameters, the pump performance can be optimized, ensuring that the fluid flow is uniform and efficient inside the device.
The design is expected to improve the overall performance, efficiency and stability of the pump, reduce maintenance cost and provide more reliable operation by comprehensively considering factors such as the overall center of gravity, axis alignment, radial distance, included angle and the like.
In summary, the design of such a corrosion-resistant pump 2 takes into account a number of factors, which aim to improve the performance, stability and reliability of the fluid pump by optimizing the structure and parameters to meet the requirements of different engineering or industrial applications.
According to the fixing method of the anti-falling structure of the wear-resistant plate, provided by the invention, due to the fact that the slope opening is added, the weldability is greatly enhanced, meanwhile, the welding strength is enhanced, the wear-resistant plate can be effectively prevented from falling off, and the reliability of the pump device in the running process is greatly ensured.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The method for machining the wear-resistant plate is characterized by comprising an anti-falling structure, wherein the method is used for machining a plate body of the anti-falling structure of the wear-resistant plate, and a first extending edge and a second extending edge which are arranged on the plate body in a separated mode, and the machining method comprises the following steps of:
fixing the plate body by clamping the first extending edge on a numerical control machine tool, and primarily milling the surfaces of the second extending edge and the plate body to a first reserved size;
drawing contour lines of a first groove body and a second groove body on the surface of the second extending edge, milling the second extending edge for the second time according to the contour lines of the second groove body to form the second groove body and exposing the first groove body along a preset direction;
milling the surface of the second extending edge for the third time according to the contour line of the first groove body so as to form the first groove body communicated with the second groove body, and milling the surface of the second extending edge for the fourth time to the set size of the second extending edge;
fixing the plate body by clamping the second extending edge on a numerical control machine tool, primarily milling the surface of the first extending edge to a second reserved size, secondarily milling the surfaces of the plate body and the first extending edge to the set sizes of the plate body and the first extending edge respectively,
wherein the wear plate is for use in a corrosion resistant pump.
2. The method of claim 1, wherein the range of values for the first and second predetermined dimensions is set based on the type of material of the plate body;
the first reserved size is a difference value between the second extending edge and the surface of the plate body and the set size, and the value range of the first reserved size is 1.5mm-2.5mm;
the second reserved size is a difference value between the surface of the first extending edge and the set size, and the value range of the first reserved size is 1.5mm-2mm.
3. The method of claim 1, wherein the predetermined direction has an included angle of less than ninety degrees with a third milling direction of the first groove body.
4. The method of claim 1, wherein the plate body is sized to have a third predetermined dimension between the set dimension and the assembled dimension of the plate body on the corrosion-resistant pump;
the value range of the third reserved size is 0.3-0.8mm.
5. The wear plate machined according to any one of claims 1-4, wherein the wear plate includes a drop-out prevention structure comprising:
the middle part of the surface of the plate body is provided with a through hole which is communicated with the inner cavity of the corrosion-resistant pump; the plate body extends outwards from the through hole along the axial direction of the inner cavity so as to form a first extension edge; the side wall of the plate body extends outwards along the radial direction of the inner cavity to form a second extension edge;
the first groove body is arranged on the second extending edge, penetrates through the second extending edge along the axial direction of the inner cavity and is communicated with the inner cavity along the radial direction of the inner cavity; the first groove body is provided with two first inner walls which are parallel to each other, and the two first inner walls are connected with the side wall of the second extension edge; the first groove body is also provided with second inner walls which are respectively connected with the two first inner walls, and the second inner walls are perpendicular to the two first inner walls;
the second groove body is arranged on the second extension edge, is communicated with the inner cavity along the axial direction of the inner cavity, and is communicated with the first groove body along the radial direction of the inner cavity; the second groove body is provided with a third inner wall, the third inner wall is connected with the second inner wall, and a first included angle is formed between the third inner wall and the axis of the inner cavity.
6. The wear plate in accordance with claim 5, wherein the first slot has a plurality of slots along the circumference of the second extension edge, and a second included angle is formed between adjacent slots;
wherein the value of the second included angle is 100 ° - 130 ° 。
7. The wear plate in accordance with claim 5, wherein the outer wall of the first extension and the side wall of the second extension facing away from the second slot respectively conform to the surface of the inner cavity, and the end of the first inner wall facing away from the third inner wall is fixedly connected with the surface of the inner cavity, so that the plate is fixed on the surface of the inner cavity.
8. A wear plate in accordance with claim 7, wherein a predetermined spacing is provided between the sidewall of the second extension and the surface of the cavity along the radial direction of the cavity.
9. The wear plate in accordance with claim 8, wherein the first inner wall is fixed to the surface of the inner cavity by welding, and a limit key is formed in the axial direction of the inner cavity after welding;
and along the radial direction of the inner cavity, part of the limit key protrudes from the second extending edge and is positioned in the preset interval.
10. The wear plate in accordance with claim 9, wherein the limit key has two first side walls along the axial direction of the inner cavity, one of the first side walls is fixedly connected to the surface of the inner cavity, and the other first side wall corresponds to the connection between the second inner wall and the third inner wall along the radial direction of the inner cavity.
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| JP2009291837A (en) * | 2008-06-09 | 2009-12-17 | Tetsuo Harada | Abrasion-resistant plate and method for mounting the same |
| US20130011268A1 (en) * | 2011-07-07 | 2013-01-10 | James Miller | Impeller Assembly and Method |
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| KR20200062486A (en) * | 2018-11-27 | 2020-06-04 | 한국가스공사 | Wear ring assembly of impeller for nlg pump |
| CN112709717A (en) * | 2019-10-25 | 2021-04-27 | 广州市拓道新材料科技有限公司 | Wear-resistant pump body and manufacturing method thereof |
| CN217433154U (en) * | 2022-06-29 | 2022-09-16 | 济南章力机械有限公司 | Special numerical control drilling and milling machine for wear-resistant plates |
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| US4435126A (en) * | 1980-03-26 | 1984-03-06 | Klein, Schanzlin & Becker Aktiengesellschaft | Centrifugal pump impeller with replaceable wear ring |
| JP2009291837A (en) * | 2008-06-09 | 2009-12-17 | Tetsuo Harada | Abrasion-resistant plate and method for mounting the same |
| CN102947004A (en) * | 2010-04-19 | 2013-02-27 | 乌尔可公司 | A wear plate system, arrangement and method |
| US20130011268A1 (en) * | 2011-07-07 | 2013-01-10 | James Miller | Impeller Assembly and Method |
| CN206276933U (en) * | 2016-12-05 | 2017-06-27 | 利欧集团浙江泵业有限公司 | Revolution self-centering borehole drill construction |
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