A kind of connecting device of shot blasting chamber and sealing chamber for shot blasting machine

Abstract

The utility model provides a kind of for the link device of sealing chamber and shot blasting chamber of shot blasting machine, comprising: shot blasting cylinder, sealing cylinder and alignment structure.The outer wall of the shot blasting cylinder is provided with convex strip along the circumferential extension, and convex strip includes the first convex strip and the second convex strip that are parallel to each other.The inner wall of the sealing cylinder is provided with the groove along the circumferential extension, and groove includes the first groove and the second groove that are parallel to each other.The first groove is used to accommodate the first convex strip, and the second groove is used to accommodate the second convex strip, and the width of first groove and second groove is greater than the width of corresponding first convex strip and second convex strip.The shot blasting cylinder is configured to rotate relative to sealing cylinder, and the labyrinth seal passage with gap is formed between convex strip and groove.Alignment structure includes telescopic alignment arm, and alignment arm extends into the gap between convex strip and groove, and makes shot blasting cylinder and sealing cylinder align.The link device of the application can realize the sealing and alignment of sealing cylinder and shot blasting cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shot blasting machine, in particular, relates to a kind of shot blasting chamber and sealing chamber for the shot blasting machine. BACKGROUND

[0002] Shot blasting machine is a kind of industrial equipment using high-speed steel shot to clean, strengthen or derust the surface of workpiece. Its core working area is shot blasting chamber, which is equipped with a shot blasting machine inside, which can accelerate the steel shot to the surface of workpiece. To avoid high-speed steel shot and splashing debris directly escaping from the equipment, causing safety hazards or environmental pollution, a sealing chamber is usually connected to the outlet side of the shot blasting chamber. The main function of the sealing chamber is to provide a relatively closed extension space, so that the steel shot after impact can collide and rub in this space multiple times, thereby dissipating its residual kinetic energy and promoting most of the steel shot and dust to settle back.

[0003] In the prior art, the shot blasting chamber and the sealing chamber are usually directly connected through simple flanges or butt joints. However, since both are large welded parts, there are certain manufacturing and installation errors, making it difficult to achieve complete and tight fit at the butt joint, and gaps are easily generated. The vibration during equipment operation can further enlarge the gap. When the steel shot with kinetic energy enters this area, it is easy to pop out from the above-mentioned gap, causing steel shot leakage, environmental pollution around the equipment, and even causing safety problems. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a kind of shot blasting chamber and sealing chamber for the shot blasting machine, which can realize the sealing and alignment of shot blasting chamber and sealing chamber.

[0005] Specifically, the present application is realized by the following technical solutions: The present application provides a kind of shot blasting chamber and sealing chamber for the shot blasting machine, which includes: The shot blasting cylinder constituting the shot blasting chamber, the outer wall of the shot blasting cylinder is provided with a convex strip extending in the circumferential direction, and the convex strip includes first and second convex strips parallel to each other; The sealing cylinder constituting the sealing chamber, the inner wall of the sealing cylinder is provided with a groove extending in the circumferential direction, and the groove includes first and second grooves parallel to each other, the first groove is used to accommodate the first convex strip, the second groove is used to accommodate the second convex strip, and the width of the first and second grooves is greater than the width of the corresponding first and second convex strips, the shot blasting cylinder is configured to rotate relative to the sealing cylinder, and the workpiece is transported and shot blasted; After the shot blasting cylinder and the sealing cylinder are connected, a labyrinth seal passage with a gap is formed between the convex strip and the groove; The alignment structure comprises a telescopic alignment arm configured to extend into the gap between the protrusion and the groove after the shot blasting cylinder and the sealing cylinder are connected, and to align the shot blasting cylinder and the sealing cylinder.

[0006] Optionally, the alignment structure is located on one side of the sealing cylinder, and an arc-shaped long hole is formed in the sidewall of the sealing cylinder for the alignment arm to extend into, the arc-shaped long hole being opposite to the gap between the sidewall of the groove and the sidewall of the protrusion.

[0007] Optionally, the alignment structure comprises a driving source, a transmission member, and a frame body, the alignment arm being integrated on the frame body, the driving source driving the frame body through the transmission member to drive the alignment arm to extend and retract in the groove relative to the arc-shaped long hole.

[0008] Optionally, the frame body is arc-shaped towards one side of the sealing cylinder.

[0009] Optionally, the transmission member comprises a driving seat fixedly connected to the driving end of the driving source, and a plurality of push rods connected between the driving seat and the frame body, the plurality of push rods being distributed along the height direction of the frame body to disperse the concentrated thrust output by the driving source to different positions of the frame body.

[0010] Optionally, the alignment arm is provided in two groups corresponding to the first groove and the second groove.

[0011] Optionally, each group of the alignment arm comprises two sub-alignment arms for extending into the gap on both sides of the protrusion in the corresponding groove.

[0012] Optionally, the alignment arm is tapered towards the end of the groove.

[0013] The application provides an alignment device for a shot blasting chamber and a sealing chamber of a shot blasting machine. Firstly, the first protrusion and the second protrusion on the outer wall of the shot blasting cylinder are inserted into the first groove and the second groove on the inner wall of the sealing cylinder respectively, and the two form a M-shaped labyrinth sealing channel with a tortuous path. The labyrinth structure can effectively block the direct leakage path of the steel shots and the dust during the rotation of the shot blasting cylinder relative to the sealing cylinder.

[0014] Secondly, the sealing cylinder and the shot blasting cylinder are both large welded parts, and there are inevitable manufacturing tolerances and installation errors. In the design, the groove width is greater than the protrusion width. The necessary assembly tolerance is reserved to avoid installation difficulties caused by size interference.

[0015] Furthermore, this application provides an alignment structure, whose retractable alignment arm can directly extend into the gap between the convex strip and the groove after the shot blasting cylinder and the sealing cylinder are connected. Since the alignment arm itself has a uniform thickness, when it is fully extended, its two sides will simultaneously contact the sides of the convex strip and the sides of the groove, thereby automatically correcting the originally uneven gap to a uniform state consistent with the thickness of the alignment arm, ensuring the circumferential uniformity of the labyrinth gap. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a shot blasting cylinder shown in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of a sealing cylinder shown in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of the connection between the shot blasting cylinder and the sealing cylinder, as shown in an exemplary embodiment of this application; Figure 4 This is a schematic cross-sectional view of the connecting device shown in an exemplary embodiment of this application; Figure 5 This is a partial enlarged view of the connecting device shown in an exemplary embodiment of this application; Figure 6 This is a schematic diagram of a labyrinth sealing channel at the junction of a shot blasting cylinder and a sealing cylinder, as shown in an exemplary embodiment of this application. Figure 7 A schematic diagram of an alignment device is shown in an exemplary embodiment of this application.

[0017] Wherein: 100, shot blasting cylinder; 110, raised strip; 111, first raised strip; 112, second raised strip; 200, sealing cylinder; 210, groove; 211, first groove; 212, second groove; 220, arc-shaped elongated hole; 300, alignment structure; 310, alignment arm; 311, sub-alignment arm; 320, drive source; 330, transmission component; 331, drive seat; 332, push rod; 340, frame. Detailed Implementation

[0018] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0019] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0020] refer to Figure 1 , Figure 2 and Figure 3 This application provides a connection device for the shot blasting chamber and the sealing chamber of a shot blasting machine, including: a shot blasting cylinder 100, a sealing cylinder 200, and an alignment structure 300. The shot blasting cylinder 100 constitutes the shot blasting chamber. The shot blasting machine drives the shot blasting cylinder 100 to rotate, and the shot blasting cylinder 100 has spiral ribs inside, which simultaneously convey the workpiece forward and blast it. The outer wall of the shot blasting cylinder 100 has circumferentially extending ribs 110, which include a first rib 111 and a second rib 112 that are parallel to each other. The sealing cylinder 200 constitutes the sealing chamber. The inner wall of the sealing cylinder 200 has circumferentially extending grooves 210, which include a first groove 211 and a second groove 212 that are parallel to each other; combined with Figure 6 The first groove 211 is used to accommodate the first protrusion 111, and the second groove 212 is used to accommodate the second protrusion 112. The widths of both the first groove 211 and the second groove 212 are greater than the widths of the corresponding first protrusion 111 and second protrusion 112. The shot blasting cylinder 100 is configured to rotate relative to the sealing cylinder 200 and to convey and shot blast the workpiece. After the shot blasting cylinder 100 and the sealing cylinder 200 are connected, a labyrinthine sealing channel with a gap is formed between the protrusion 110 and the groove 210. Dynamic sealing is achieved between the two during the rotation of the shot blasting cylinder relative to the sealing cylinder.

[0021] Combination Figure 4 and Figure 5 The alignment structure 300 includes a retractable alignment arm 310, which is configured to extend into the gap between the protrusion 110 and the groove 210 after the shot blasting cylinder 100 and the sealing cylinder 200 are connected, and to align the shot blasting cylinder 100 and the sealing cylinder 200. There can be one or more alignment arms 310, corresponding to extending into one or more gaps.

[0022] First, by inserting the first protrusion 111 and the second protrusion 112 on the outer wall of the shot blasting cylinder 100 into the corresponding first groove 211 and second groove 212 on the inner wall of the sealing cylinder 200, the two work together to form an M-shaped labyrinth sealing channel with a tortuous path. During the shot blasting process, as the shot blasting cylinder 100 rotates relative to the sealing cylinder 200, this labyrinth structure has a gap that allows for relative rotation and can effectively block the direct leakage path of steel shot and dust, reducing material loss and environmental pollution.

[0023] Secondly, both the sealing cylinder 200 and the shot blasting cylinder 100 are large welded components, with the sealing cylinder 200 being fastened to the outside of the shot blasting cylinder 100 for installation. However, unavoidable manufacturing tolerances and installation errors exist during the installation process. In this application's design, the width of the groove 210 is greater than the width of the protrusion 110. Necessary assembly tolerances are reserved, avoiding installation difficulties caused by dimensional interference and ensuring the safety and feasibility of connecting large components. However, the existence of this fitting gap may also cause slight relative misalignment when the two chambers are connected, resulting in uneven width of the circumferential labyrinth gap. This misalignment will significantly reduce the sealing effect and may cause dust to overflow.

[0024] To this end, this application further provides an alignment structure 300, whose retractable alignment arm 310, after the shot blasting cylinder 100 and the sealing cylinder 200 are connected, can directly extend into the gap between the protrusion 110 and the groove 210. Since the alignment arm 310 itself has a uniform thickness, when it is fully extended, its two sides will simultaneously contact the sides of the protrusion 110 and the groove 210, thereby automatically correcting the potentially uneven gap to a uniform state consistent with the thickness of the alignment arm 310. This process essentially forcibly corrects the relative position of the sealing cylinder 200 and the shot blasting cylinder 100, aligning their central axes and ensuring circumferential uniformity of the labyrinth gap.

[0025] Combination Figure 4 and Figure 7In one embodiment, the alignment structure 300 is located on one side of the sealing cylinder 200. The side wall of the sealing cylinder 200 has an arc-shaped elongated hole 220 for the alignment arm 310 to extend into. The arc-shaped elongated hole 220 is directly opposite the gap between the side wall of the groove 210 and the side wall of the protrusion 110. The alignment arm 310 can directly extend into the gap of the labyrinth sealing channel through this arc-shaped elongated hole 220 to perform the alignment function. After adjustment and retraction, the arm portion of the alignment arm 310 will still fill the arc-shaped elongated hole 220, which is equivalent to leaving a plug in the channel. This effectively prevents dust, debris, etc., from entering the labyrinth sealing channel through the arc-shaped elongated hole 220, avoiding interference with the sealing effect or aggravating internal wear. In addition, in a specific embodiment, the single through arc-shaped elongated hole 220 can also be designed as multiple independent short holes arranged along the arc circumference, with multiple short holes corresponding to multiple linked alignment arms 310. This multi-point synchronous intervention method can achieve multi-point adjustment and also achieve the effect of aligning the shot blasting cylinder 100 and the sealing cylinder 200.

[0026] Combination Figure 2 , Figure 5 and Figure 7 In one embodiment, the alignment structure 300 includes a drive source 320, a transmission component 330, and a frame 340. Alignment arms 310 are integrated onto the frame 340. The drive source 320 drives the frame 340 via the transmission component 330, causing the alignment arms 310 to extend and retract relative to the arc-shaped elongated hole 220 within the groove 210. The drive source 320, which can be an electric actuator 332 or a hydraulic cylinder, provides initial linear power, which is transmitted to a rigid frame 340 via the transmission component 330. Since all alignment arms 310 are integrated onto this frame 340, the linear extension and retraction motion of the drive source 320 can be converted into a synchronized collective extension and retraction motion of all alignment arms 310.

[0027] In one specific embodiment, the side of the frame 340 facing the sealing cylinder 200 is an arc-shaped frame 340 directly facing the middle area of ​​the sealing cylinder 200. Here, the arc-shaped side of the frame 340 can be consistent with the arc of the middle area of ​​the sealing cylinder 200, so as to better match the arc-shaped gap formed between the groove 210 and the protrusion 110.

[0028] In one specific embodiment, the drive source 320, transmission component 330, and frame 340 can be encapsulated within a protective housing. Firstly, this creates a relatively enclosed clean environment, effectively isolating external dust and debris from the internal precision drive mechanism and moving parts, greatly reducing the risk of jamming, wear, or failure due to contamination. Secondly, the housing itself also strengthens the structure, making the mounting points more stable and resulting in a cleaner appearance for the equipment.

[0029] CombinationFigure 7 In one embodiment, the transmission component 330 includes a drive seat 331 fixedly connected to the drive end of the drive source 320, and multiple thrust rods connected between the drive seat 331 and the frame 340. These thrust rods are distributed along the height direction of the frame 340, distributing the concentrated thrust output by the drive source 320 to different positions on the frame 340. Specifically, the transmission component 330 includes a drive seat 331 fixedly connected to the output end of the drive source 320, and multiple thrust rods connected between the drive seat 331 and the frame 340. For example, three thrust rods are evenly distributed along the height direction of the frame 340: upper, middle, and lower. This mechanism synchronously distributes the single concentrated thrust output by the drive source 320 to force points at different heights on the frame 340. This embodiment ensures that the frame 340 and all the alignment arms 310 integrated thereon experience balanced force during movement and achieves multi-point synchronous drive using a single drive source 320.

[0030] In one embodiment, the alignment arms 310 are configured in two sets, extending into the first groove 211 and the second groove 212 respectively. This allows for simultaneous calibration of the gap between the two grooves 210, thereby ensuring the alignment of the entire labyrinth sealing structure.

[0031] In one specific embodiment, each set of alignment arms 310 includes two sub-alignment arms 311, which are respectively inserted into the gaps on both sides of the protrusion 110 within the corresponding groove 210. In this embodiment, each set of alignment arms 310 further includes two sub-alignment arms 311. These two sub-alignment arms 311 are used to insert into the gaps on both sides of the protrusion 110 within the corresponding groove 210. Force can be applied simultaneously from both sides of the protrusion 110, thereby ensuring that the protrusion 110 is centered relative to the groove 210 during adjustment and preventing skewing during calibration.

[0032] In one embodiment, the end of the alignment arm 310 facing the groove 210 is tapered. The tapered guide ramp makes it easier to push aside slight obstructions and achieve smooth insertion when the alignment arm 310 is initially inserted into the inclined gap.

[0033] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A connection device for the shot blasting chamber and the sealing chamber of a shot blasting machine, characterized in that, include: The shot blasting chamber is formed by a shot blasting cylinder (100), and the outer wall of the shot blasting cylinder (100) is provided with a convex strip (110) extending circumferentially. The convex strip (110) includes a first convex strip (111) and a second convex strip (112) that are parallel to each other. The sealing cylinder (200) constituting the sealing chamber has a circumferentially extending groove (210) on its inner wall. The groove (210) includes a first groove (211) and a second groove (212) that are parallel to each other. The first groove (211) is used to accommodate the first protrusion (111), and the second groove (212) is used to accommodate the second protrusion (112). The width of the first groove (211) and the second groove (212) is greater than the width of the corresponding first protrusion (111) and the second protrusion (112). The shot blasting cylinder (100) is configured to rotate relative to the sealing cylinder (200) and to transport and shot blast the workpiece. After the shot blasting cylinder (100) is connected to the sealing cylinder (200), a labyrinth sealing channel with a gap is formed between the protrusion (110) and the groove (210). The alignment structure (300) includes a retractable alignment arm (310) configured to extend into the gap between the protrusion (110) and the groove (210) after the shot blasting cylinder (100) and the sealing cylinder (200) are connected, and to align the shot blasting cylinder (100) with the sealing cylinder (200).

2. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 1, characterized in that, The alignment structure (300) is located on one side of the sealing cylinder (200). The side wall of the sealing cylinder (200) is provided with an arc-shaped elongated hole (220) for the alignment arm (310) to extend into. The arc-shaped elongated hole (220) is directly opposite the gap between the side wall of the groove (210) and the side wall of the protrusion (110).

3. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 2, characterized in that, The alignment structure (300) includes a drive source (320), a transmission component (330), and a frame (340). The alignment arm (310) is integrated on the frame (340). The drive source (320) drives the frame (340) through the transmission component (330), causing the alignment arm (310) to extend and retract relative to the arc-shaped elongated hole (220) within the groove (210).

4. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 3, characterized in that, The side of the frame (340) facing the sealing cylinder (200) is arc-shaped.

5. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 3, characterized in that, The transmission component (330) includes a drive seat (331) fixedly connected to the drive end of the drive source (320), and a plurality of thrust rods connected between the drive seat (331) and the frame (340). The plurality of thrust rods are distributed along the height direction of the frame (340) to distribute and transmit the concentrated thrust output by the drive source (320) to different positions of the frame (340).

6. The connection device for the shot blasting chamber and the sealing chamber of a shot blasting machine as described in any one of claims 1 to 5, characterized in that, The alignment arms (310) are configured in two sets, which extend into the first groove (211) and the second groove (212) respectively.

7. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 6, characterized in that, Each set of the alignment arms (310) includes two sub-alignment arms (311) for extending into the gaps on both sides of the protrusion (110) in the corresponding groove (210).

8. The connection device between the shot blasting chamber and the sealing chamber for a shot blasting machine as described in claim 1, characterized in that, The end of the alignment arm (310) facing the groove (210) is tapered.

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