Iron Dust Separation and Collection Method for Iron Accessories Grinding Equipment of Pilates Bed

Abstract

The present invention relates to the technical field of Pilates fitness equipment maintenance, and discloses an iron dust separation and collection method for a special grinding equipment of iron accessories of a Pilates bed, which includes three treatment areas: a first treatment area, a second treatment area and a third treatment area. There is a first isolation component with a penetration plate between the first and second treatment areas, and a second isolation component is arranged between the second and third treatment areas. Through a three-stage separation treatment system, combined with a double-layer honeycomb composite structure, dynamic magnetic field adsorption and multi-stage filtration, the efficient separation and recycling of iron dust are realized. The arched double-layer honeycomb structure and the air flow nozzle system effectively prevent dust agglomeration, while the variable cross-section cavity and the arc-shaped diversion design extend the dust movement path. The N-S-N three-pole structure of the permanent magnetic material can generate a dynamically alternating magnetic field, significantly improving the dust capture rate. This method has the characteristics of reasonable structure, high separation efficiency and simple maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of Pilates fitness equipment maintenance, and specifically relates to an iron dust separation and collection method for a special grinding equipment of iron accessories of a Pilates bed. Background Art

[0002] A Pilates bed is a health training equipment. During the frequent use of its iron accessories, surface treatment is required, and the grinding operation is an important link to ensure the use performance of the accessories. A large amount of metal dust will be generated during the grinding process of the iron accessories. If not properly treated, it is easy to cause environmental pollution and waste of resources. The commonly used dust treatment methods for the existing iron accessory grinding equipment are as follows: One is to set up a simple dust suction device in the grinding area and directly collect the dust through negative pressure suction; the other is to use a single filter screen or magnetic adsorption device for dust treatment.

[0003] These traditional dust treatment methods have the following problems: First, a single dust suction device is difficult to handle dust with different properties and particle sizes generated during the grinding process, resulting in low collection efficiency; second, a simple filter screen is easy to block and needs to be frequently replaced, increasing the maintenance cost; third, traditional magnetic adsorption devices often adopt a fixed layout, unable to fully contact the dust, and prone to form dust agglomeration, affecting the adsorption effect; fourth, the sealing performance of the dust collection area is poor, easy to cause secondary pollution; fifth, there is a lack of a grading treatment mechanism for the collected dust, which is not conducive to subsequent recycling.

[0004] Therefore, there is a need for a separation and collection method that can efficiently handle the grinding dust of iron accessories and has good environmental protection and economy at the same time. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies of the prior art and provide an iron dust separation and collection method for a grinding equipment of iron accessories of a Pilates bed. The present invention realizes the efficient separation and recycling of metal dust during the grinding process of the iron accessories of the Pilates bed through the construction of a three-stage separation and treatment system and the combined design of a double-layer honeycomb composite structure, dynamic magnetic field adsorption, and multi-stage filtration.

[0006] To solve the above problems, the present invention adopts the following scheme: An iron dust separation and collection method for a special grinding equipment of iron accessories of a Pilates bed, comprising the following steps:

[0007] Step 1: Construct a separation and collection space: Construct a grinding area and a dust collection area inside the frame of the grinding equipment. The grinding area is provided with an operating table and a grinding fixture that can move along the X-Y horizontal plane. A cylindrical grinding wheel is horizontally arranged above the grinding fixture. The dust collection area is completely isolated from the external environment through a sealing structure;

[0008] Step 2: Establish a three - stage separation treatment area: Set up a first treatment area, a second treatment area, and a third treatment area in sequence along the direction of dust treatment. Set up a first isolation component with a penetration plate between the first treatment area and the second treatment area, and set up a second isolation component between the second treatment area and the third treatment area. The first treatment area adopts gravity sedimentation combined with directional diversion, the second treatment area adopts magnetic adsorption, and the third treatment area adopts a filter screen vibration device;

[0009] Step 3: Perform separation and collection treatment: Grind the iron accessories through the cylindrical grinding wheel. The generated metal dust is preliminarily separated in the first treatment area, magnetically adsorbed in the second treatment area, and finally the residual dust is collected in the third treatment area;

[0010] Through the design of hierarchical treatment and multiple barriers, this method realizes the efficient separation and collection of metal dust. The sealed isolation of the separation space ensures that the dust will not leak out. The setting of the three - stage treatment area enables the dust to be separated step by step according to physical properties, greatly improving the collection efficiency.

[0011] Preferably, the penetration plate of the first isolation component adopts a double - layer honeycomb composite structure, which is arched as a whole and inclined at an angle to the horizontal plane, including:

[0012] The outer layer of mesh cloth, using large - size honeycomb cells, forms a multi - layer shallow corrugated structure on the inner circumferential surface;

[0013] The inner layer of mesh cloth, using honeycomb cells smaller than the outer layer, sets a multi - layer deep corrugated structure on the inner circumferential surface, and the wave peak height is greater than that of the outer layer;

[0014] The central axis of the outer layer cells points to the arch focus, is arranged out of alignment with the inner layer and the upper boundaries coincide;

[0015] The design of this double - layer honeycomb composite structure significantly improves the dust separation effect. Honeycomb cells and corrugated structures of different sizes form multi - stage buffers, effectively preventing dust agglomeration. The arched design and out - of - alignment arrangement increase the movement path of the dust, improving the separation efficiency.

[0016] Preferably, a variable - cross - section cavity is formed between the double - layer mesh cloths, with an inner spacing of 3 mm gradually transitioning to 5 mm outward. The design of this variable - cross - section cavity enables the dust to form a stable spiral trajectory during movement, significantly extending the residence time of the dust in the system and improving the separation effect.

[0017] Preferably, the second isolation component includes:

[0018] A magnetic adsorption cylinder, made of permanent magnetic material;

[0019] A driving motor, used to drive the magnetic adsorption cylinder;

[0020] The arc-shaped deflector is coaxially designed with the magnetic adsorption cylinder and a gap is reserved.

[0021] The structural design of the second isolation component realizes the efficient magnetic adsorption of iron dust. The use of permanent magnetic materials ensures a stable magnetic field intensity. The coaxial design and gap reservation not only ensure the collection effect but also avoid mechanical interference.

[0022] Preferably, a plurality of permanent magnet arrays are evenly arranged along the circumference of the outer periphery of the magnetic adsorption cylinder, and each array adopts an N-S-N three-pole structure; the whole is driven by the driving motor to rotate slowly at a low speed to generate a dynamic alternating magnetic field; the setting of the multi-pole magnetic field structure generates a dynamic alternating magnetic field, significantly improving the capture rate of iron dust and avoiding the agglomeration of magnetic dust at the same time.

[0023] Preferably, the arc-shaped deflector has an arc-shaped structure, and the starting end forms an inclined angle with the horizontal plane; the inner layer is made of aluminum alloy and is provided with spiral guiding grooves; the outer layer is made of low-carbon steel material, and groove structures are arranged at the positions corresponding to the permanent magnets; the multi-layer structural design of the arc-shaped deflector, combined with the spiral guiding grooves and groove structures, forms an efficient guiding system, ensuring that the dust can move along a predetermined trajectory and improving the separation efficiency.

[0024] Preferably, a dust suction pipe is arranged in the dust collection area, and inclined multi-layer filter cotton is arranged in the dust suction pipe, which are a coarse filter layer, a medium-fine filter layer and an ultra-fine filter layer in sequence, for grading and filtering dust of different particle sizes; the multi-layer filtering structure realizes the grading and filtering of dust of different particle sizes, significantly improving the filtering efficiency of the system and prolonging the service life of the filtering component at the same time.

[0025] Preferably, a number of air flow nozzles are arranged on both sides of the double-layer honeycomb composite structure, arranged in two inner and outer circles. The inner circle nozzles are aligned with the deep corrugations of the inner layer mesh cloth, and the outer circle is aligned with the shallow corrugations of the outer layer mesh cloth to form a reverse disturbing force; the setting of the air flow nozzle system enhances the dispersion effect of the dust, destroys the dust agglomeration through the reverse disturbing force, and improves the efficiency of subsequent magnetic adsorption.

[0026] Preferably, a dust scraping structure is arranged in the third treatment area, including a fixed scraping plate connected by a hinge shaft and a storage tank for collection, as well as a filter screen for collecting residual metal dust; the design of the dust scraping structure realizes the efficient collection of residual dust, and the hinge design ensures the stability and reliability of the scraping process.

[0027] Preferably, during the process of the magnetic adsorption cylinder moving to the dust scraping structure for cleaning, a secondary adsorption effect is generated on the iron dust on the surface of the filter screen; the design of the secondary adsorption effect improves the overall recovery rate of iron dust in the system and reduces the waste of dust.

[0028] Compared with the prior art, the present invention has the following remarkable beneficial effects:

[0029] The iron dust separation and collection method for the special grinding equipment of the iron accessories of the Pilates bed provided by the invention realizes the efficient separation and recycling of iron dust through constructing a three-stage separation and treatment system in the grinding equipment frame body, combining the combined design of a double-layer honeycomb composite structure, dynamic magnetic field adsorption and multi-stage filtration. Among them, the double-layer honeycomb structure with an arched design cooperates with the air flow nozzle system to effectively prevent dust agglomeration. The variable cross-section cavity and arc-shaped diversion design extend the dust movement path. The N-S-N three-pole structure of the permanent magnetic material generates a dynamic alternating magnetic field, which significantly improves the dust capture rate. The multi-layer filtration structure realizes the classified collection of dust with different particle sizes. At the same time, through mechanisms such as sealed isolation and secondary adsorption, the environmental protection and economy of dust treatment are ensured. This method has the characteristics of reasonable structure, high separation efficiency, simple maintenance, etc., can effectively solve the dust pollution problem in the grinding process of the iron accessories of the Pilates bed, and has remarkable practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of the iron accessories of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the special grinding equipment for iron accessories;

[0033] Figure 3 It is a schematic structural diagram at the grinding area;

[0034] Figure 4 It is a schematic diagram of the first treatment area, the second treatment area and the third treatment area;

[0035] Figure 5 For Figure 4 The partial enlarged view of part Ⅰ in

[0036] Figure 6 It is a schematic internal structure diagram of the magnetic adsorption cylinder of the present invention in the treatment area;

[0037] Figure 7 It is a schematic internal structure diagram of the magnetic adsorption cylinder of the present invention at the dust scraping structure;

[0038] Figure 8 It is a schematic diagram of the honeycomb unit composite structure;

[0039] Figure 9 Show the main processing flow of Embodiment 1;

[0040] Figure 10 Show the improved systems of Embodiments 2 and 3.

[0041] Reference numerals: iron accessories 01, grinding area 02, dust collection area 03, first processing area 04, second processing area 05, third processing area 06, frame 10, mobile workbench 20, grinding jig 30, cylindrical grinding wheel 40, multi-stage dust separation device 50, first isolation component 51, penetration plate 511, first guide plate 512, second guide plate 513, second isolation component 52, magnetic adsorption cylinder 521, drive motor 522, third guide plate 523, arc-shaped guide plate 524, dust suction pipe 53, dust scraping structure 54, fixed scraping plate 541, storage groove 542, filter screen 56. Detailed implementation manners

[0042] The following will combine with Figures 1-10 Describe the preferred embodiments of the present invention in detail. It should be noted that the following description is only the preferred embodiments of the present invention, rather than a limitation to the present invention. Those skilled in the art should understand that various modifications and variations can be made to the present invention without departing from the spirit and scope of the present invention. The protection scope of the present invention should be subject to the appended claims.

[0043] Embodiment 1

[0044] First, refer to Figures 1-4 , the method of the present invention provides a method for separating and collecting iron dust of a special grinding device for iron accessories of a Pilates bed. This method uses a combination of penetration shunting, variable cross-section adsorption and multi-stage filtration to achieve efficient separation and collection of metal dust. By extending the dust movement path and setting multiple collection points, dust with different particle sizes and properties are respectively introduced into the corresponding processing channels to form a hierarchical collection circulation system. The specific steps are as follows:

[0045] I. Construct a separation and collection space

[0046] Construct a grinding area 02 and a dust collection area 03 inside the frame 10 of the special grinding device for iron accessories of a Pilates bed. The grinding area 02 is provided with a mobile workbench 20 and a grinding jig 30 that can move along the X-Y horizontal plane, and a horizontally arranged cylindrical grinding wheel 40 is arranged above the grinding jig 30. The dust collection area 03 is completely isolated from the external environment through a sealing structure.

[0047] II. Establish a three-stage separation and treatment area

[0048] A first treatment area 04, a second treatment area 05, and a third treatment area 06 are sequentially arranged along the dust treatment direction. The first treatment area 04 uses gravity sedimentation combined with directional diversion; the second treatment area 05 uses magnetic adsorption combined with variable cross-section adsorption; the third treatment area 06 uses a filter screen vibration device.

[0049] III. Installation and Configuration of the Multi-Stage Separation Component

[0050] First, install a dust multi-stage separation device 50 in the dust collection area 03. This device includes a first isolation component 51, a second isolation component 52, a dust suction pipe 53, and a dust scraping structure 54. Among them, the first isolation component 51 is arranged between the first treatment area 04 and the second treatment area 05, the second isolation component 52 is arranged between the second treatment area 05 and the third treatment area 06, the dust suction pipe 53 covers the first treatment area 04 and the second treatment area 05, and the dust scraping structure 54 is arranged at the far end of the third treatment area 06.

[0051] The penetration plate 511 of the first isolation component 51 is composed of fine lines made of high-strength nylon material arranged at equal intervals. The arrangement direction of the fine lines is adapted to the dust movement trajectory.

[0052] In addition, in some embodiments, the penetration plate 511 adopts a double-layer honeycomb composite structure, which is integrally arched and inclined at an angle of 15 - 20° with the horizontal plane. The outer mesh cloth uses large-size honeycomb units with a side length of 15 - 18 mm, and 5 - 6 layers of shallow corrugations (peak height 1.5 - 2 mm) are formed on the inner peripheral surface. The mesh hole diameter is 1.2 - 1.5 mm, and they are evenly distributed along the radial direction to form an initial receiving cavity; the inner mesh cloth uses small-size honeycomb units with a side length of 6 - 8 mm, and 2 - 3 layers of deep corrugations (peak height 3 - 4 mm) are arranged on the inner peripheral surface. The mesh hole diameter is 0.8 - 1.0 mm. The central axis of the outer layer unit points to the arch focus, is arranged in a staggered manner with the inner layer, and the upper boundaries coincide. A variable cross-section cavity is formed between the two layers of mesh cloth, with an inner spacing of 3 mm gradually transitioning to 5 mm outward. When the dust enters, it is first received and buffered in the upper space of the large-size honeycomb units in the outer layer, and then undergoes multi-stage buffering through the corrugated structures of the inner and outer layers. The variable cross-section cavity gradually expands from the inside to the outside, causing the dust to form a spiral movement trajectory. The independent vibration and resonance effects of the two layers of mesh cloth generate a stable eddy current field, significantly extending the residence time of the dust in the system. In addition, based on the flexible characteristics of the mesh cloth material, the outer surface of the arched structure generates high-frequency and intense structural oscillations under the continuous impact of the dust. This oscillation forms a strong dynamic collision with the dust that naturally falls in the second treatment area 05, not only significantly changing the movement trajectory of the dust, but also causing the dust to form a discrete state in space, greatly increasing the contact opportunity between the dust and the magnetic adsorption cylinder 521, thereby improving the dust capture efficiency.

[0053] The first deflector 512, the second deflector 513 and the penetration plate 511 form a complete shunt system, which respectively extend to the junction of the grinding area 02 and the intake port area of the dust suction pipe 53. The second isolation component 52 is composed of a magnetic adsorption cylinder 521 made of permanent magnetic material, a driving motor 522, a third deflector 523 and an arc-shaped deflector 524. The arc-shaped deflector 524 is coaxially designed with the magnetic adsorption cylinder 521 and a gap is reserved, which not only provides a directional flow channel for dust but also ensures the rotational freedom. In the dust suction pipe 53, multiple layers of filter cotton are arranged obliquely, which are a coarse filter layer, a medium-fine filter layer and an ultra-fine filter layer in sequence, and are respectively responsible for intercepting abrasive grains, resin grains and fine particles such as PM2.5. The dust scraping structure 54 includes a fixed scraping plate 541 connected by a hinge shaft and a storage groove 542 for collection. A filter screen 56 with a special mesh structure is arranged in the third treatment area 06 to collect residual metal dust.

[0054] IV. Specific steps of the separation, collection and treatment method

[0055] Step 1: Initial treatment stage

[0056] After the equipment is started, the cylindrical grinding wheel 40 rotates at a high speed to grind the iron accessories 01, and the generated metal dust enters the first isolation component 51. Since the first isolation component 51 adopts a double-layer honeycomb composite structure, the dust is first received in the upper space of the outer large-size honeycomb unit (side length 15-18 mm), and obtains a preliminary buffer under the action of the shallow corrugated structure. Subsequently, the dust forms a spiral motion trajectory in the variable cross-section cavity of 3-5 mm between the inner and outer layer mesh cloths, and is further decelerated under the action of the deep corrugations of the inner small-size honeycomb unit (side length 6-8 mm). The combined action of this multi-stage buffering and directional diversion gradually stratifies the mixed dust with different densities during the movement, laying a foundation for subsequent classification and collection.

[0057] Step 2: Classification and collection stage

[0058] The dust that has passed through the shunt and spiral guidance of the double-layer honeycomb structure of the first isolation component 51 enters the second treatment area 05. Most of the iron dust is preferentially captured by the magnetic adsorption cylinder 521 due to its magnetic characteristics. The variable cross-section structure between the first treatment area 04 and the second treatment area 05 generates a pressure gradient, which has a classification effect on the remaining dust: a part of the abrasive grains and resin grains are intercepted and classified and filtered through the multi-layer filter cotton in the dust suction pipe 53; another part of the dust that has not been magnetically adsorbed and filtered is directed along the preset gap channel between the arc-shaped deflector 524 and the magnetic adsorption cylinder 521, and is directionally introduced into the third treatment area 06 for subsequent treatment under the action of the air flow.

[0059] Step 3: Cleaning and recycling stage

[0060] When the grinding is paused and switched, the magnetic adsorption cylinder 521 moves to the dust scraping structure 54 for cleaning. During this movement, when the magnetic adsorption cylinder 521 passes above the filter screen 56, it has a secondary adsorption effect on the iron dust on the surface of the filter screen, further improving the recovery rate of iron dust. When the magnetic adsorption cylinder 521 reaches the designated position, through the reciprocating bouncing of the fixed scraping plate 541 and the continuous vibration of the filter screen 56, effective dust collection is achieved. The mechanical interference between the magnetic adsorption cylinder 521 and the fixed scraping plate 541 continuously promotes the vibration of the filter screen 56, enabling the dust to be fully removed and recovered. This method combining the secondary adsorption during the movement with the final mechanical removal significantly improves the recovery efficiency of the system for iron dust.

[0061] Example 2

[0062] Based on Example 1, this method adds a directional air flow system to the double-layer honeycomb structure of the first isolation component 51:

[0063] A number of air flow nozzles are arranged on both sides of the arched structure, arranged in two inner and outer circles. The inner circle nozzles are aligned with the deep corrugations of the inner layer mesh, and the outer circle is aligned with the shallow corrugations of the outer layer mesh. The angle between the nozzle and the corrugation surface is 10 - 15°. The air flow pulse frequency is synchronized with the dust generation rate to form a reverse disturbing force.

[0064] Working process:

[0065] When the dust enters the double-layer honeycomb structure, the outer layer air flow first destroys the dust agglomeration state, and the inner layer air flow further disperses the dust. Under the air flow disturbance, the spiral movement is more sufficient, enhancing the natural separation effect of the dust according to the material characteristics. The separated iron dust is more easily captured by the subsequent magnetic adsorption cylinder 521.

[0066] This improvement makes full use of the spatial characteristics of the double-layer honeycomb structure and improves the separation efficiency.

[0067] Example 3: Cooperative optimization scheme of multi-pole magnetic field and arc-shaped diversion system

[0068] In this embodiment, by optimizing the magnetic field structure of the magnetic adsorption cylinder 521 and matching the improved arc-shaped deflector 524, a separation system with a synergistic effect is formed. Eight permanent magnet arrays are evenly arranged along the circumference on the periphery of the magnetic adsorption cylinder 521. Each array adopts an N-S-N three-pole structure (pole length 30 mm, width 15 mm), and the whole is driven by a driving motor 522 to rotate at a speed of 15 - 20 r / min to generate a dynamic alternating magnetic field. The arc-shaped deflector 524 is located directly below the adsorption cylinder. The arc part is coaxially arranged with the adsorption cylinder, and the top gap is 10 mm; the whole is in a 90° arc shape with a radius of 200 mm, and the starting end forms an angle of 15° with the horizontal plane. The inner layer is made of 6061 aluminum alloy with a wall thickness of 2.5 mm, and is provided with two 45° spiral grooves (groove depth 1.8 mm, width 3.5 mm) to guide the movement of dust downward in a clockwise direction; the outer layer is made of Q235 low-carbon steel with a wall thickness of 3.5 mm, and eight oval grooves (length 15 mm, width 8 mm, depth 2.5 mm) are provided corresponding to the positions of the permanent magnets to strengthen the local magnetic field. The double-layer spacing gradually changes from 3 mm at the inlet end to 5 mm at the outlet end to form a guiding eddy current, and the coaxiality is controlled within 0.5 mm. Through the cooperation of the dynamic magnetic field of the permanent magnet array and the double-layer structure of the deflector, this system realizes the hierarchical capture of magnetic dust and significantly improves the separation efficiency.

Claims

1. A method for separating and collecting iron dust from a special grinding device for iron accessories of a Pilates bed, characterized in that , including the following steps: Step 1: Constructing a separation and collection space: constructing a grinding area and a dust collection area inside the grinding equipment frame, wherein the grinding area is provided with a workbench and a grinding fixture that can be moved along the XY horizontal plane, and a horizontally arranged cylindrical grinding wheel is provided above the grinding fixture, and the dust collection area is completely isolated from the external environment by a sealing structure; Step 2: Establish a three-stage separation treatment area: set up the first treatment area, the second treatment area and the third treatment area in sequence along the dust treatment direction, set up a first isolation component with a penetration plate between the first treatment area and the second treatment area, set up a second isolation component between the second treatment area and the third treatment area, the first treatment area adopts gravity sedimentation combined with directional flow guidance, the second treatment area adopts magnetic adsorption, and the third treatment area adopts a filter vibration device; Step 3: performing separation and collection processing: grinding the iron accessories with the cylindrical grinding wheel, the generated metal dust is initially separated in the first processing area, magnetically adsorbed in the second processing area, and finally residual dust is collected in the third processing area; The penetration plate of the first isolation component adopts a double-layer honeycomb composite structure, which is arched as a whole and is inclined at an angle to the horizontal plane, and includes: The outer mesh uses large-sized honeycomb units, and the inner surface forms a multi-layer shallow corrugated structure; The inner mesh uses honeycomb units that are smaller than the outer ones, and the inner surface is provided with a multi-layer deep corrugated structure, and the height of the wave crest is greater than that of the outer corrugation; The central axis of the outer unit points to the arch focus, which is staggered with the inner unit and coincides with the upper boundary.

2. The method for separating and collecting iron dust from a special grinding device for iron accessories of a Pilates bed according to claim 1, characterized in that A variable cross-section cavity is formed between the outer mesh and the inner mesh, and the inner spacing gradually transitions from 3 mm to 5 mm.

3. The method for separating and collecting iron dust from the special grinding equipment for the iron accessories of the Pilates bed according to claim 1 is characterized in that , the second isolation component comprises: Magnetic adsorption cylinder, made of permanent magnetic material; A driving motor, used to drive the magnetic adsorption cylinder; The arc-shaped guide plate is designed to be coaxial with the magnetic adsorption cylinder and a gap is reserved.

4. The method for separating and collecting iron dust from a special grinding device for iron accessories of a Pilates bed according to claim 3 is characterized in that A plurality of permanent magnet arrays are evenly arranged along the circumference of the outer periphery of the magnetic adsorption cylinder, and each array adopts an NSN three-pole structure; the driving motor drives the entire cylinder to rotate at a low speed to generate a dynamic alternating magnetic field.

5. The method for separating and collecting iron dust from a grinding device specifically designed for the iron accessories of a Pilates bed according to claim 3 is characterized in that The arc guide plate has an arc-shaped structure, and the starting end forms an inclined angle with the horizontal plane; the inner layer is made of aluminum alloy and is provided with a spiral guide groove; the outer layer is made of low-carbon steel material, and a groove structure is provided at the corresponding permanent magnet position.

6. The method for separating and collecting iron dust of the special grinding equipment for the iron accessories of the Pilates bed according to claim 1, characterized in that: A dust collection duct is arranged in the dust collection area, and multiple layers of filter cotton arranged obliquely are arranged in the dust collection duct, which are a coarse filter layer, a medium and fine filter layer and an ultrafine filter layer in sequence, and are used for graded filtering of dust with different particle sizes.

7. The method for separating and collecting iron dust of the special grinding equipment for the iron accessories of the Pilates bed according to claim 1, characterized in that: A plurality of airflow nozzles are arranged on both sides of the double-layer honeycomb composite structure, divided into inner and outer circles, with the inner circle nozzles aimed at the deep corrugations of the inner mesh and the outer circle nozzles aimed at the shallow corrugations of the outer mesh to form reverse disturbance force.

8. The method for separating and collecting iron dust of the special grinding equipment for the iron accessories of the Pilates bed according to claim 3, characterized in that: A dust scraping structure is arranged in the third processing area, including a fixed scraping plate connected by a hinge shaft and a receiving trough for collecting, and a filter screen for collecting residual metal dust.

9. The method for separating and collecting iron dust of the special grinding equipment for the iron accessories of the Pilates bed according to claim 8, characterized in that: The magnetic adsorption cylinder produces a secondary adsorption effect on the iron dust on the surface of the filter screen during the process of moving to the dust scraping structure for cleaning.

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