Sand flying prevention sealing device and shot blasting machine

Abstract

The application provides a flying sand prevention sealing device and a shot blasting machine. The shot blasting machine comprises a chamber body provided with a chute at the top. The flying sand prevention sealing device comprises a flexible sealing assembly and a rigid sealing assembly. The rigid sealing assembly is arranged at least partially in the chute, and the flexible sealing assembly is arranged above the rigid sealing assembly. In this way, the rigid and flexible sealing assemblies are combined to seal the top of the chamber body of the shot blasting machine. Good sealing is achieved, and the upper flexible sealing assembly is well protected from being damaged by the impact of the shot blasting sand, thereby effectively prolonging the service life of the flexible sealing assembly.

Description

Technical Field

[0001] This invention relates to the field of sealing device technology, and more specifically, to a sand-proof sealing device and a shot blasting machine. Background Technology

[0002] A shot blasting machine is a surface treatment device that removes rust and scale from the surface of metal workpieces by blasting them with high-speed jets of shot, such as fine steel shot. Currently, most shot blasting machines on the market are through-type, meaning their chambers have chutes at the top to allow lifting equipment to pass through.

[0003] Due to the long-term impact and bouncing of shot blasting sand, it often splashes outside the chamber, a phenomenon known as "shot blasting." In existing technology, to prevent this, a herringbone seal is typically installed at the top of the chamber, with an outermost layer of flexible material (such as a brush). However, this sealing method exposes a large area of ​​the sealing rubber to the impact of the shot blasting sand, accelerating its damage. Summary of the Invention

[0004] The problem solved by this invention is: how to reduce the impact of shot blasting sand on the flexible sealing rubber sheet at the top of the shot blasting machine chamber.

[0005] To address the aforementioned problems, the present invention provides an anti-sand-flying sealing device for use in a shot blasting machine. The shot blasting machine includes a chamber with a groove at the top. The anti-sand-flying sealing device includes a flexible sealing component and a rigid sealing component. The rigid sealing component is at least partially disposed within the groove, and the flexible sealing component is disposed above the rigid sealing component.

[0006] Optionally, the rigid sealing assembly includes a horizontally arranged first sealing plate and a vertically arranged second sealing plate. The first sealing plate is symmetrically arranged on both sides of the bottom of the groove, and the second sealing plate is at least partially symmetrically arranged in the groove and located above the first sealing plate.

[0007] Optionally, the first sealing plate includes a horizontally arranged first plate body and a vertically arranged first baffle, and the second sealing plate includes a vertically arranged second plate body and a horizontally arranged second baffle. The first baffle is located on the side of the first plate body facing the second plate body and on the side of the second plate body away from the internal space of the groove. The second baffle is located on the side of the second plate body away from and / or facing the first baffle.

[0008] Optionally, the flexible sealing assembly includes a first bracket, a second bracket, and a first herringbone seal, a second herringbone seal, a brush, and a third herringbone seal arranged sequentially from bottom to top. The second bracket is connected to the top of the chamber through the first bracket. One end of the brush is connected to the second bracket. One end of the first herringbone seal is connected to the first bracket, and the other end faces downward to form a herringbone shape. One end of the second herringbone seal is connected to the second bracket, and the other end faces downward to form a herringbone shape. One end of the third herringbone seal is connected to the second bracket, and the other end faces upward to form a herringbone shape.

[0009] Optionally, the flexible sealing assembly further includes a pressure plate, through which the first herringbone seal is connected to the first bracket.

[0010] Optionally, the second bracket is provided with a reflux hole, and the space formed between the first herringbone seal and the second herringbone seal communicates with the reflux hole.

[0011] Optionally, the second bracket includes a bracket body and a third baffle connected to each other, the reflux hole is disposed on the bracket body, the third baffle is located on the side of the bracket body facing the first herringbone seal, and the orthographic projection of the third baffle on the bracket body covers the reflux hole.

[0012] Optionally, the anti-sand sealing device further includes protective covers, which are disposed on both sides above the flexible sealing assembly and are detachably connected to the flexible sealing assembly.

[0013] Optionally, the protective cover includes a vertically arranged first cover and an inclined second cover. One end of the first cover is connected to the flexible sealing assembly, and the other end of the first cover is connected to one end of the second cover. The other end of the second cover is inclined upward, and the second cover is located on the side of the first cover facing the flexible sealing assembly.

[0014] To address the aforementioned problems, the present invention also provides a shot blasting machine, including the anti-sand sealing device described above.

[0015] Compared with existing technologies, the anti-sand-blasting sealing device of the present invention sets a rigid sealing component below the flexible sealing component, and positions the rigid sealing component at least partially within a groove on the top of the shot blasting machine chamber. This combination of rigid and flexible sealing components seals the top of the shot blasting machine chamber. When the shot blasting machine's hanger moves along the groove, the vast majority of the shot blasting sand first impacts the lower rigid sealing component, with only a small amount splashing from the small gap between the rigid sealing component and the hanger onto the upper flexible sealing component. This effectively reduces the impact of the shot blasting sand on the flexible sealing component. Simultaneously, under the sealing action of the rigid and flexible sealing components, the shot blasting sand is ejected back into the shot blasting machine chamber, preventing leakage and waste, and improving the air quality of the working environment. Furthermore, the rigid sealing component is resistant to shot blasting sand impact, achieving a good seal while also effectively protecting the upper flexible sealing component from damage, thus extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the anti-sand sealing device in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the first sealing plate in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the second sealing plate in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the second support in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Flexible sealing assembly; 11. First bracket; 12. Second bracket; 121. Bracket body; 122. Third baffle; 123. Return hole; 13. First herringbone seal; 14. Second herringbone seal; 15. Brush; 16. Third herringbone seal; 17. Pressure plate; 20. Rigid sealing assembly; 21. First sealing plate; 211. First plate body; 212. First baffle; 22. Second sealing plate; 221. Second plate body; 222. Second baffle; 30. Protective cover; 31. First protective cover; 32. Second protective cover; 500. Chamber; 510. Slide groove; 520. Protective plate bracket. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] In the attached figures, the Z-axis represents the vertical direction, i.e., the up-down position, with the positive direction of the Z-axis (i.e., the direction the arrow points) representing upwards and the negative direction representing downwards. The X-axis represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0025] Combination Figure 1 As shown, this embodiment of the invention provides an anti-sand sealing device applied to a shot blasting machine. The shot blasting machine includes a chamber 500 with a groove 510 on the top. The anti-sand sealing device includes a flexible sealing component 10 and a rigid sealing component 20. The rigid sealing component 20 is at least partially disposed within the groove 510, and the flexible sealing component 10 is disposed above the rigid sealing component 20.

[0026] Specifically, the top of the shot blasting machine chamber 500 is provided with a slide 510 for the movement of the lifting device. For a through-type shot blasting machine, the slide 510 extends through the top of the chamber 500 along the movement direction of the lifting device. For a non-through-type shot blasting machine, the slide 510 may not extend through the top of the chamber 500 along the movement direction of the lifting device. The flexible sealing component 10 is disposed above the rigid sealing component 20 as an upper sealing component. In this case, the flexible sealing component 10 may be disposed above the slide 510 or disposed within the slide 510. The main sealing component in the flexible sealing component 10 is the herringbone seal, which is described later, and the herringbone seal is usually made of flexible materials such as rubber. The rigid sealing component 20 is disposed at least partially within the slide 510 in an embedded manner as a lower sealing component. The main sealing component in the rigid sealing component 20 is the sealing plate, which is described later, and the sealing plate is usually made of steel plate.

[0027] In this embodiment, a rigid sealing component 20 is provided below the flexible sealing component 10, and the rigid sealing component 20 is at least partially disposed in the groove 510 at the top of the shot blasting machine chamber 500. In this way, a combination of rigid and flexible sealing components is used to seal the top of the shot blasting machine chamber 500. When the shot blasting machine's lifting device moves along the groove 510, most of the shot blasting sand first impacts the lower rigid sealing component 20, and only a small amount of shot blasting sand splashes from the small gap between the rigid sealing component 20 and the lifting device onto the upper flexible sealing component 10. This effectively reduces the impact of shot blasting sand on the flexible sealing component 10. At the same time, under the sealing effect of the rigid sealing component 20 and the flexible sealing component 10, the shot blasting sand is ejected back into the shot blasting machine chamber 500, thereby preventing shot blasting sand leakage, avoiding waste, and improving the air quality of the shot blasting machine's working environment. Moreover, the rigid sealing component 20 can withstand the impact of shot blasting sand. While achieving a good seal, it can also protect the upper flexible sealing component 10 from damage by shot blasting sand impact, effectively extending the service life of the flexible sealing component 10.

[0028] Optionally, combined Figure 1 As shown, the rigid sealing assembly 20 includes a horizontally arranged first sealing plate 21 and a vertically arranged second sealing plate 22. The first sealing plate 21 is at least partially symmetrically arranged on both sides of the bottom of the slide groove 510, and the second sealing plate 22 is symmetrically arranged in the slide groove 510 and located above the first sealing plate 21.

[0029] Specifically, the first sealing plate 21 and the second sealing plate 22 are typically steel plate structures resistant to shot blasting impact. The first sealing plate 21 is laid horizontally at the bottom of the slide 510 and is symmetrically arranged on the left and right sides of the bottom of the slide 510. Since the first sealing plate 21 needs to be installed and fixed, the first sealing plate 21 can be partially located outside the slide 510, and the part outside the slide 510 is fixedly connected to the top of the chamber 500 by bolts. The second sealing plate 22 is vertically arranged in the slide 510 in an embedded manner and is symmetrically arranged on the left and right sides of the slide 510. The lower end of the second sealing plate 22 can abut against the first sealing plate 21, or it can have a small gap due to assembly error or manufacturing error.

[0030] In this embodiment, by symmetrically arranging a first sealing plate 21 and a second sealing plate 22 perpendicular to each other within the slide groove 510 at the top of the shot blasting machine chamber 500, the rigid sealing component 20 is embedded within the slide groove 510. Simultaneously, this allows the shot blasting sand splashed onto the bottom of the slide groove 510 and within the slide groove 510 to first impact the first sealing plate 21 and the second sealing plate 22, thereby reducing the impact of the shot blasting sand on the flexible sealing component 10 over a wider area. Furthermore, by symmetrically arranging the first sealing plate 21 on both sides of the bottom of the slide groove 510 and symmetrically arranging the second sealing plate 22 within the slide groove 510 and above the first sealing plate 21, the internal height space of the shot blasting machine chamber 500 is reduced or eliminated, lowering the height requirement of the chamber 500 and thus reducing the overall volume of the shot blasting machine chamber 500, thereby lowering production costs.

[0031] Furthermore, the first sealing plate 21 is a flat plate structure, and the second sealing plate 22 is typically an I-shaped plate structure. The first sealing plate 21 is bolted to the top of the chamber 500 and located on both sides of the bottom of the slide groove 510. The upper end of the second sealing plate 22 is bolted to the protective plate bracket 520 inside the slide groove 510. The I-shaped plate structure can be a conventional I-shaped plate, or, for example... Figure 3 The I-shaped panel shown has a top horizontal panel extending from the left to the right of the vertical panel, and a bottom horizontal panel located on one side of the vertical panel. This configuration results in a simple structure that is easy to manufacture.

[0032] Optionally, combined Figure 1 As shown, the first sealing plate 21 includes a horizontally arranged first plate body 211 and a vertically arranged first baffle 212. The second sealing plate 22 includes a vertically arranged second plate body 221 and a horizontally arranged second baffle 222. The first baffle 212 is located on the side of the first plate body 211 facing the second plate body 221 and on the side of the second plate body 221 away from the internal space of the slide groove 510. The second baffle 222 is located on the side of the second plate body 221 away from and / or facing the first baffle 212.

[0033] In this embodiment, the first baffle 212 of the first sealing plate 21 is disposed within the slide groove 510, so that the first sealing plate 21 is at least partially located within the slide groove 510, and the second plate body 221 and the second baffle 222 of the second sealing plate 22 are both located within the slide groove 510. Specifically, the first baffle 212 is vertically disposed at the upper end of the first plate body 211 and located on the side of the second plate body 221 facing away from the internal space of the slide groove 510, and the second baffle 222 is horizontally disposed at the left end and / or right end of the second plate body 221.

[0034] In this way, the first plate body 211, the first baffle 212, the second plate body 221, and the second baffle 222 are interwoven horizontally and vertically to form a labyrinth-like sealing structure, so that the shot blasting sand splashed into the slide groove 510 will be ejected back into the chamber 500 after colliding with the first baffle 212 or the second baffle 222, thereby effectively preventing the shot blasting sand from leaking out and impacting the flexible sealing assembly 10.

[0035] Optionally, combined Figure 1 As shown, the flexible sealing assembly 10 includes a first bracket 11, a second bracket 12, and a first herringbone seal 13, a second herringbone seal 14, a brush 15, and a third herringbone seal 16 arranged sequentially from bottom to top. The second bracket 12 is connected to the top of the chamber 500 through the first bracket 11. One end of the brush 15 is connected to the second bracket 12. One end of the first herringbone seal 13 is connected to the first bracket 11, and the other end faces downward to form a herringbone shape. One end of the second herringbone seal 14 is connected to the second bracket 12, and the other end faces downward to form a herringbone shape. One end of the third herringbone seal 16 is connected to the second bracket 12, and the other end faces upward to form a herringbone shape.

[0036] Specifically, the flexible sealing assembly 10 is located on the outer side of the top of the chamber 500. The lower end of the first bracket 11 is bolted to the top of the chamber 500, the second bracket 12 is bolted to the upper end of the first bracket 11, the first herringbone seal 13 is bolted to the first bracket 11, and the second herringbone seal 14, brushes 15, and the third herringbone seal 16 are bolted to the second bracket 12. The first herringbone seal 13 and the second herringbone seal 14 are typically made of high-quality oil-resistant rubber, which is relatively soft, and the herringbone structure faces downwards. The third herringbone seal 16 is made of nylon-reinforced rubber, which is harder than the first herringbone seal 13 and the second herringbone seal 14, and the herringbone structure faces upwards. A row of brushes 15 is symmetrically arranged between the second herringbone seal 14 and the third herringbone seal 16.

[0037] In this embodiment, the brush 15 is placed between the second herringbone seal 14 and the third herringbone seal 16, with the third herringbone seal 16 facing upwards to form a herringbone shape. This not only prevents impurities such as dust from outside the shot blasting machine chamber 500 from falling onto the brush 15, thus providing a certain dustproof effect, but also prevents the relatively hard third herringbone seal 16 from obstructing the movement of the lifting device. This ensures good passage of the lifting device and improves the overall sealing effect, further preventing the leakage of shot blasting sand.

[0038] Optionally, combined Figure 1 As shown, the flexible sealing assembly 10 also includes a pressure plate 17, and the first herringbone seal 13 is connected to the first bracket 11 through the pressure plate 17.

[0039] Specifically, the pressure plate 17 is located on the side of the first bracket 11 facing the brush 15, the first herringbone seal 13 is connected to the upper end face of the pressure plate 17, one end of the pressure plate 17 is welded to the first bracket 11, and the other end is detachably connected to the first herringbone seal 13 by bolts, and the end of the pressure plate 17 away from the first bracket 11 is inclined downward.

[0040] In this embodiment, by setting a pressure plate 17 and connecting the first herringbone seal 13 to the first bracket 11 through the pressure plate 17, not only can the distance between the first herringbone seal 13 and the first bracket 11 be shortened, reducing the material consumption of the first herringbone seal 13, but the pressure plate 17 can also support the first herringbone seal 13 to prevent it from collapsing due to its soft material, thereby ensuring the good sealing performance of the first herringbone seal 13.

[0041] Furthermore, the second bracket 12 is provided with a fixing hole, and a nut is pre-embedded in the fixing hole. The second herringbone seal 14, the brush 15 and the third herringbone seal 16 are all detachably connected to the second bracket 12 at the fixing hole by fasteners.

[0042] In this way, the second herringbone seal 14, the brush 15 and the third herringbone seal 16 can be fixed to the second bracket 12 by a fastener such as a bolt. The assembly is simple and convenient, which saves the number of fasteners such as bolts and improves the assembly efficiency.

[0043] Optionally, combined Figure 1 and Figure 4 As shown, the second bracket 12 is provided with a reflux hole 123, and the space formed between the first herringbone seal 13 and the second herringbone seal 14 is connected to the reflux hole 123.

[0044] In this way, when the very little shot that splashes out from the gap between the third herringbone seals 16 is bounced back onto the third herringbone seals 16 under the protection of the protective cover 30 (described later), it can flow back into the chamber 500 of the shot blasting machine through the return hole 123. This ensures that the very little shot that splashes out from the third herringbone seals 16 flows back into the chamber 500 of the shot blasting machine under the protection of the protective cover 30.

[0045] Optionally, combined Figure 1 and Figure 4 As shown, the second bracket 12 includes a bracket body 121 and a third baffle 122 connected to each other. A reflux hole 123 is provided on the bracket body 121. The third baffle 122 is located on the side of the bracket body 121 facing the first herringbone seal 13, and the orthogonal projection of the third baffle 122 on the bracket body 121 covers the reflux hole 123.

[0046] Specifically, the third baffle 122 can be an L-shaped plate structure or a flat plate structure that is inclined downwards; no specific limitation is made here.

[0047] In this way, by setting a third baffle 122 below the second bracket 12 and making the orthogonal projection of the third baffle 122 on the bracket body 121 cover the return hole 123, the shot blasting sand in the chamber 500 can be effectively prevented from leaking out through the return hole 123.

[0048] Optionally, combined Figure 1 As shown, the anti-sand sealing device also includes a protective cover 30, which is disposed on both sides above the flexible sealing assembly 10 and is detachably connected to the flexible sealing assembly 10.

[0049] Specifically, the protective cover 30 is usually a vertically arranged enclosure structure, and the lower end of the protective cover 30 is fixed to the first bracket 11 in the flexible sealing assembly 10 by bolts.

[0050] In this way, by providing protective covers 30 on both sides above the flexible sealing assembly 10, the shot blasting sand splashed out from the tiny gap caused by movement between the lifting device and the third herringbone seal 16 can be effectively blocked.

[0051] Furthermore, combined Figure 1 As shown, the protective cover 30 is detachably connected to the first bracket 11 via the second bracket 12.

[0052] In this way, the protective cover 30 can press the second bracket 12 tightly, which improves the stability and firmness of the second bracket 12 when it is fixed.

[0053] Optionally, combined Figure 1 As shown, the protective cover 30 includes a vertically arranged first protective cover 31 and an inclined second protective cover 32. One end of the first protective cover 31 is connected to the flexible sealing assembly 10, and the other end of the first protective cover 31 is connected to one end of the second protective cover 32. The other end of the second protective cover 32 is inclined upward, and the second protective cover 32 is located on the side of the first protective cover 31 facing the flexible sealing assembly 10.

[0054] In this way, the vertically arranged first protective cover 31 and the inclined second protective cover 32 together enclose the upper part of the flexible sealing assembly 10, thereby expanding the protection range of the protective cover 30 and thus enclosing the shot blasting sand splashed out from the gap between the third herringbone seal 16 and the lifting device to a greater extent.

[0055] Another embodiment of the present invention provides a shot blasting machine, including the above-described anti-sand sealing device.

[0056] In this embodiment, the shot blasting machine can be either a catenary shot blasting machine, in which case the slide 510 penetrates the top of the chamber 500 along the moving direction, or a hook-type shot blasting machine, in which case the slide 510 does not penetrate the top of the chamber 500 along the moving direction. No specific limitation is made here. The anti-sand-flying sealing device is installed at the slide 510 at the top of the shot blasting machine chamber 500. Specifically, the rigid sealing component 20 is at least partially disposed within the slide 510, and the flexible sealing component 10 is disposed above the rigid sealing component 20. Since the beneficial effects of the shot blasting machine compared to the prior art are the same as those of the anti-sand-flying sealing device, they will not be described in detail here.

[0057] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A sand-proof sealing device, applied to a shot blasting machine, the shot blasting machine comprising a chamber (500) with a top groove (510), characterized in that, The anti-sand sealing device includes a flexible sealing component (10) and a rigid sealing component (20). The rigid sealing component (20) is at least partially disposed within the groove (510), and the flexible sealing component (10) is disposed above the rigid sealing component (20). The flexible sealing assembly (10) includes a first bracket (11), a second bracket (12), and a first herringbone seal (13), a second herringbone seal (14), a brush (15), and a third herringbone seal (16) arranged sequentially from bottom to top. The second bracket (12) is connected to the top of the chamber (500) through the first bracket (11). One end of the brush (15) is connected to the second bracket (12). One end of the first herringbone seal (13) is connected to the first bracket (11), and the other end is downward to form a herringbone shape. One end of the second herringbone seal (14) is connected to the second bracket (12), and the other end is downward to form a herringbone shape. One end of the third herringbone seal (16) is connected to the second bracket (12), and the other end is upward to form a herringbone shape. The second bracket (12) is provided with a reflux hole (123), and the space formed between the first herringbone seal (13) and the second herringbone seal (14) communicates with the reflux hole (123); The second bracket (12) includes a bracket body (121) and a third baffle (122) connected to each other. The reflux hole (123) is disposed on the bracket body (121). The third baffle (122) is located on the side of the bracket body (121) facing the first herringbone seal (13), and the orthographic projection of the third baffle (122) on the bracket body (121) covers the reflux hole (123). The third baffle is an L-shaped plate structure or a flat plate structure that is inclined downwards.

2. The anti-flying sand sealing device according to claim 1, characterized in that, The rigid sealing assembly (20) includes a horizontally arranged first sealing plate (21) and a vertically arranged second sealing plate (22). The first sealing plate (21) is symmetrically arranged on both sides of the bottom of the groove (510), and the second sealing plate (22) is at least partially symmetrically arranged in the groove (510) and located above the first sealing plate (21).

3. The anti-sand sealing device according to claim 2, characterized in that, The first sealing plate (21) includes a horizontally arranged first plate body (211) and a vertically arranged first baffle (212). The second sealing plate (22) includes a vertically arranged second plate body (221) and a horizontally arranged second baffle (222). The first baffle (212) is located on the side of the first plate body (211) facing the second plate body (221) and on the side of the second plate body (221) away from the internal space of the slide groove (510). The second baffle (222) is located on the side of the second plate body (221) away from and / or facing the first baffle (212).

4. The anti-sand sealing device according to claim 1, characterized in that, The flexible sealing assembly (10) further includes a pressure plate (17), through which the first herringbone seal (13) is connected to the first bracket (11).

5. The anti-flying sand sealing device according to any one of claims 1-4, characterized in that, It also includes protective covers (30), which are disposed on both sides above the flexible sealing assembly (10) and are detachably connected to the flexible sealing assembly (10).

6. The anti-sand sealing device according to claim 5, characterized in that, The protective cover (30) includes a vertically arranged first cover (31) and an inclined second cover (32). One end of the first cover (31) is connected to the flexible sealing assembly (10), and the other end of the first cover (31) is connected to one end of the second cover (32). The other end of the second cover (32) is inclined upward, and the second cover (32) is located on the side of the first cover (31) facing the flexible sealing assembly (10).

7. A shot blasting machine, characterized in that, Includes the anti-sand sealing device as described in any one of claims 1-6.

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