A negative pressure recovery device for glass sandblasting

Abstract

The utility model relates to a kind of recovery devices, provide such a kind of glass sandblasting's negative pressure recovery device, including clamping seat, connecting seat and adjusting rod etc.;Clamping seat is composed of two mutually sliding connection's half circular ring clamping block, adjusting rod is rotationally connected in clamping block, connecting seat is equipped between the two adjusting rod ends, and round groove allowing sandblasting gun to be penetrated is opened in connecting seat.The utility model forms double adsorption space by inner cover and outer cover at the sandblasting place of spray gun, covers and adsorbs the sandblasting area, the sand material that escapes without being promptly adsorbed in inner cover is collected by outer cover, effectively eliminates the negative pressure blind area of single cavity, reduces the sand material amount that leaks from cover body edge, reduces workbench surface sand material accumulation or residual, improves sand material collection completeness.

Description

Technical Field

[0001] This utility model relates to a recycling device, and more particularly to a negative pressure recycling device for glass sandblasting. Background Technology

[0002] Sandblasting is a key process for achieving frosted textures, etched patterns, or anti-slip properties on glass surfaces. It uses high-speed abrasive to impact the glass surface, creating the desired effect. To recover splashed abrasive, a recycling system is necessary to reduce waste and pollution. Currently, most glass sandblasting processes utilize single-cavity negative pressure recovery devices. These devices have a single-chamber cylindrical or flared hood fixedly mounted on the sandblasting nozzle, moving synchronously with it. A negative pressure is created through a negative pressure pipe or fan connected to the rear of the hood, drawing the sand and dust generated during sandblasting into the hood and transporting it to a collection container. This method requires no complex adjustments and can be adapted to small sandblasting equipment, making it widely used in glass processing plants.

[0003] The main function of the aforementioned negative pressure recovery device is to move synchronously with the sandblasting nozzle, using the negative pressure area formed within the chamber to initially collect the sand splashed around the nozzle, reducing sand scattering and dust diffusion, and lowering the workload of manual cleaning. However, due to the structural limitations of a single chamber, it has many practical defects and causes adverse effects: because the airflow distribution inside the single chamber lacks a guiding design, the negative pressure is concentrated only in a localized area near the negative pressure pipe interface. The adsorption force drops sharply at the edges and corners of the cover away from the interface, resulting in incomplete sand collection. Especially when the spray gun sandblasts curved or edge glass surfaces, due to the height difference between the bottom of the negative pressure adsorption cover and the glass, a large amount of loose sand leaks out from the adsorption blind area. The single adsorption chamber cannot effectively and promptly absorb the sand leaking out during the adsorption stage, causing this sand to accumulate on the worktable. During a certain period of work, frequent manual cleaning is required, severely reducing processing efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a negative pressure recovery device for glass sandblasting.

[0005] The technical solution is as follows: A negative pressure recovery device for glass sandblasting includes a clamping seat, a connecting seat, an adjusting rod, a telescopic tube, an outer cover, an inner cover, a negative pressure tube, a branch pipe, a flexible hose, a chip removal pipe, and a mounting base. The clamping seat consists of two semi-circular ring-shaped clamping blocks that slide against each other. An adjusting rod is screwed into each clamping block. A connecting seat is provided between the ends of the two adjusting rods. The connecting seat has a circular groove that allows the sandblasting gun to pass through. The lower ends of the adjusting rods are rotatably connected to the connecting seat. The clamping seat is used to fit onto the glass sandblasting gun. A telescopic tube is connected to the lower part of the clamping seat. The lower end of the telescopic tube is connected to the top of the connecting seat. An inner cover is provided at the lower part of the connecting seat. The inner cover is conical in shape, wider at the top and narrower at the bottom. The upper part of the inner cover has a useful opening. At the opening through which the sandblasting gun penetrates, the bottom of the connecting seat is equipped with an outer cover, which surrounds the outer side of the inner cover. A negative pressure gap is provided between the inner wall of the outer cover and the outer wall of the inner cover. The top of the negative pressure gap is sealed by the bottom of the connecting seat. A negative pressure pipe is installed on one side of the connecting seat. The lower end of the negative pressure pipe is connected to two branch pipes, the ends of which are respectively connected to the internal spaces of the inner and outer covers. A flexible hose is provided at the upper end of the negative pressure pipe, and the end of the flexible hose is connected to a chip discharge pipe. One-way valves are provided on both ends of the hose. The one-way valves only allow airflow from the negative pressure pipe to flow into the chip discharge pipe. A mounting seat is provided at one end of the chip discharge pipe for installing a fan. A collection component is provided at the end of the chip discharge pipe for collecting air.

[0006] Optionally, the collection assembly includes a collection box, an exhaust pipe, a lower drain pipe, and baffles. The end of the chip removal pipe is connected to the collection box. An exhaust pipe is provided on the side of the collection box away from the chip removal pipe. Several baffles are provided in the upper part of the collection box along its length. The baffles are staggered along the upper part of the collection box, forming an airflow deflection channel in the upper part of the collection box. The chip removal pipe and the exhaust pipe are respectively connected to the air inlet and outlet of the airflow deflection channel. A lower drain pipe is provided at the bottom of the collection box.

[0007] Optionally, the lower part of the collection box is provided with two conical parts that are larger at the top and smaller at the bottom, forming two conical grooves in the lower part of the collection box through the conical parts. Each of the two conical parts is provided with a lower drain pipe, which is normally closed.

[0008] Optionally, it also includes guide strips, with several guide strips provided circumferentially on the inner walls of both the outer and inner covers. The guide strips are spiral-shaped and extend spirally from low to high along the inside of the cover.

[0009] Optionally, it also includes an air valve and an air supply pipe. An air valve is provided on the side of the connector near the negative pressure pipe, and the air outlet of the air valve is connected to the lower part of the hose through the air supply pipe.

[0010] Optionally, it also includes a viewing port, which is located on one side of the collection box and has a transparent plate inside.

[0011] Optionally, it also includes a semi-circular gasket, with a semi-circular gasket provided in each of the two clamping blocks of the clamp.

[0012] The beneficial effects are: 1. This utility model forms a double adsorption space at the sandblasting point of the spray gun by using an inner cover and an outer cover to cover and adsorb the sandblasting area. The outer cover collects the sand that is not adsorbed in time and escapes from the inner cover, effectively eliminating the negative pressure blind zone of a single cavity, reducing the leakage of sand from the edge of the cover, reducing the accumulation or residue of sand on the workbench, and improving the thoroughness of sand collection.

[0013] 2. This utility model uses components such as a collection box and baffles to form an airflow deflection channel inside the collection box. After the airflow containing debris is deflected multiple times, the debris settles into the conical groove of the collection box due to inertia and converges. This achieves efficient separation and collection of sandblasting debris, reduces pollution caused by debris being discharged with the airflow, and facilitates the recycling and reuse of sand. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a planar sectional view of the outer cover, inner cover, and negative pressure pipe components of this utility model.

[0016] Figure 3 This is a plan view of the collecting components of this utility model.

[0017] The meanings of the reference numerals in the figure are as follows: 1_clamp, 2_connecting seat, 21_adjusting rod, 3_telescopic pipe, 4_outer cover, 5_inner cover, 51_guide strip, 5100_negative pressure interval, 52_negative pressure pipe, 521_branch pipe, 53_hose, 54_air valve, 541_air supply pipe, 6_chip removal pipe, 601_mounting seat, 61_collection box, 6100_conical groove, 62_exhaust pipe, 63_lower pipe, 64_inspection port, 65_baffle plate, 7_semi-ring gasket. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0019] A negative pressure recovery device for glass sandblasting, such as Figure 1-3As shown, the device includes a clamping base 1, a connecting base 2, an adjusting rod 21, a telescopic tube 3, an outer cover 4, an inner cover 5, a negative pressure tube 52, a branch tube 521, a flexible hose 53, a chip removal tube 6, and a mounting base 601. The clamping base 1 consists of two semi-circular ring-shaped clamping blocks that slide against each other. The two clamping blocks slide and cannot be disengaged through a sliding groove and a slider. Fastening screws can be inserted laterally on the clamping blocks. Tightening the screws can drive the two clamping blocks to move towards each other and clamp tightly. Each of the two clamping blocks of the clamping base 1 is provided with a semi-circular gasket 7. The semi-circular gasket 7 is made of elastic material such as rubber. After clamping, it can fill the gap between the clamping block and the spray gun, achieving a gapless fit with the outside of the spray gun, which not only enhances the sealing performance but also prevents damage to the surface of the spray gun when the clamping blocks are clamped. The clamping blocks are all arranged along the radial direction. An adjusting rod 21 is rotatably connected to the glass blasting gun. A connecting seat 2 is provided between the ends of the two adjusting rods 21. The connecting seat 2 has a circular groove that allows the sandblasting gun to pass through. The lower ends of the adjusting rods 21 are rotatably connected to the connecting seat 2 through bearings. The clamp 1 is used to fit on the glass sandblasting gun. The relative height between the connecting seat 2 and the clamp 1 can be adjusted by synchronously rotating the two adjusting rods 21 to adapt to the height requirements of the cover in different sandblasting scenarios. The lower part of the clamp 1 is connected to a telescopic tube 3 by a clamp seal. The telescopic tube 3 is made of foldable flexible sealing material. The lower end of the telescopic tube 3 is connected to the top of the connecting seat 2 by a flange seal. It extends and retracts synchronously with the height adjustment of the adjusting rods 21, which can seal the space between the clamp 1 and the connecting seat 2 to prevent debris from escaping from this area.

[0020] The lower part of the connecting seat 2 is fixed with an inner cover 5 by bolts. The inner cover 5 is conical in shape, wider at the top and narrower at the bottom. Its contraction structure enhances the bottom suction force. The upper part of the inner cover 5 has an opening for the sandblasting gun to pass through. The edge of the opening is equipped with an elastic sealing ring to prevent debris from leaking out from the opening gap. The bottom of the connecting seat 2 is fixed with an outer cover 4 by bolts. The outer cover 4 is arranged around the outside of the inner cover 5. A negative pressure gap 5100 is provided between the inner wall of the outer cover 4 and the outer wall of the inner cover 5. The top of the negative pressure gap 5100 is closed by the bottom of the connecting seat 2 to form a sealed annular cavity. The outer cover 4 and the inner cover 5 The inner wall is provided with several guide strips 51 along the circumference. The guide strips 51 are spiral strips and extend spirally from low to high along the inside of the cover. They can guide the airflow to rise in a spiral shape, forming a rotating airflow field and improving the adsorption and transportation effect of debris at different positions. A negative pressure pipe 52 is sealed through a flange on one side of the connecting seat 2. The lower end of the negative pressure pipe 52 is connected to two branch pipes 521 through a three-way connector. The ends of the two branch pipes 521 are respectively connected to the internal space of the inner cover 5 and the negative pressure interval 5100 of the outer cover 4 to achieve simultaneous adsorption in dual spaces.

[0021] like Figure 2As shown, a flexible hose 53 is connected to the upper end of the negative pressure pipe 52 via a quick connector. A chip removal pipe 6 is connected to the end of the flexible hose 53 via a flange. One-way valves are installed on both ends of the flexible hose 53. These one-way valves only allow airflow from the negative pressure pipe 52 into the chip removal pipe 6, preventing reverse airflow and subsequent chip backflow. A mounting base 601 is bolted to one end of the chip removal pipe 6. The mounting base 601 is used to install a fan. The fan is electrically connected to an external control switch. When the fan is turned on, it drives the main airflow within the chip removal pipe 6, forming a main airflow from the flexible hose 53 towards the collection assembly. This main airflow drives the air in the flexible hose 53 and the negative pressure pipe 52 to flow synchronously towards the chip removal pipe 6, thus... A negative pressure environment with a lower air pressure than the outside is formed inside the negative pressure pipe 52, which in turn generates suction force inside the inner cover 5 and the negative pressure interval 5100 through two branch pipes 521 respectively; an air valve 54 is fixed on the side of the connecting seat 2 near the negative pressure pipe 52 by bolts. The air valve 54 is connected to the external air source pipe. The air outlet of the air valve 54 is connected to the lower part of the hose 53 through the air supply pipe 541. The air valve 54 is linked to the fan. When the fan is turned on, the air valve 54 can be opened. The external high-pressure air source delivers airflow into the hose 53 through the air supply pipe 541, which helps to enhance the airflow velocity in the negative pressure pipe 52 and further strengthens the negative pressure suction force, which is suitable for high-concentration debris adsorption scenarios.

[0022] like Figure 1 and Figure 3 As shown, a collection assembly is provided at the end of the chip removal pipe 6. This assembly separates and collects the sandblasting debris adsorbed by negative pressure. Specifically, the collection assembly includes a collection box 61, an exhaust pipe 62, a lower exhaust pipe 63, and baffles 65. The end of the chip removal pipe 6 is connected to the upper part of one side of the collection box 61 via a flange. An exhaust pipe 62 is provided on the upper part of the collection box 61, away from the chip removal pipe 6. The exhaust pipe 62 discharges the separated clean airflow. Several baffles 65 are fixedly installed at intervals along the length of the upper part of the collection box 61 using bolts. The baffles 65 are staggered along the upper part of the collection box 61, forming an airflow deflection channel in the upper part of the collection box 61. 6 and exhaust pipe 62 are respectively connected to the inlet and outlet of the airflow deflector channel. After the airflow containing debris enters the deflector channel, it is blocked by the deflector plate 65 and turns multiple times. The debris separates from the airflow due to inertia. The lower part of the collection box 61 is provided with two cone-shaped parts that are larger at the top and smaller at the bottom. The cone-shaped parts form two cone-shaped grooves 6100 in the lower part of the collection box 61. One cone-shaped groove 6100 is located below the front end of the deflector channel and can preferentially collect large particles of debris with greater inertia in the airflow. The other cone-shaped groove 6100 collects the medium and small particles of debris that are separated later, realizing the primary classification and collection of debris. Each of the two cone-shaped parts is provided with a lower drain pipe 63. The lower drain pipe 63 is normally closed and is only opened when debris needs to be discharged.

[0023] Before operation, the operator places the clamp 1 on the glass sandblasting gun, tightens the fastening screws on the clamp block, and achieves a gapless sealing clamp with the spray gun through the semi-ring gasket 7; simultaneously rotate the two adjusting rods 21 to adjust the relative height between the connecting seat 2 and the clamp 1, so that the bottom of the inner cover 5 and the outer cover 4 are adapted to the sandblasting operation height, and the telescopic tube 3 extends and retracts synchronously with the height adjustment to seal.

[0024] While starting the sandblasting equipment, the fan on the mounting base 601 is turned on via the external control switch. The fan drives the chip removal pipe 6 to form a main airflow from the hose 53 towards the collection component. The main airflow drives the air in the hose 53 and the negative pressure pipe 52 to flow synchronously, creating a negative pressure environment in the negative pressure pipe 52. This, in turn, generates suction through the two branch pipes 521 inside the inner cover 5 and in the negative pressure interval 5100. In the event of a high concentration of debris, the air valve 54 can be opened simultaneously, and an external high-pressure air source can supply air to the hose 53 through the air supply pipe 541 to help enhance the negative pressure suction.

[0025] When the sandblasting gun is working, the high-speed abrasive impacts the glass surface and the resulting debris splashes in all directions. The inner cover 5 directly adsorbs the core debris area directly below the gun, while the outer cover 4 captures the debris escaping from the edge of the inner cover 5 through the negative pressure interval 5100, achieving double coverage adsorption. The guide strips 51 on the inner walls of the outer cover 4 and the inner cover 5 guide the airflow to spiral upward, forming a rotating airflow field, which efficiently entrains debris from different positions into the airflow, avoiding adsorption blind spots.

[0026] The airflow containing debris flows into the hose 53 through the branch pipe 521 and the negative pressure pipe 52. The one-way valves at both ends of the hose 53 prevent the airflow from reversing and causing debris to flow back. The airflow then enters the chip discharge pipe 6 and is transported to the collection box 61. It turns multiple times along the baffle channel formed by the baffle plate 65. Large particles of debris settle first due to inertia to the conical groove 6100 below the front end of the baffle channel. Small and medium-sized particles of debris then settle to another conical groove 6100, achieving graded collection. The separated clean airflow is discharged through the exhaust pipe 62.

[0027] In a preferred embodiment: such as Figure 1 As shown, a viewing port 64 is opened on one side of the collection box 61. A transparent acrylic plate is embedded in the viewing port 64 to facilitate the operator to observe the debris accumulation in different conical grooves 6100 inside the collection box 61 and to open the corresponding lower drain pipe 63 to remove debris in a timely manner.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A negative pressure recovery device for glass sandblasting, comprising a clamp (1), the clamp (1) being composed of two semi-circular ring-shaped clamps that are slidably connected to each other. Its features are: It also includes a connecting seat (2), an adjusting rod (21), a telescopic tube (3), an outer cover (4), an inner cover (5), a negative pressure tube (52), a branch pipe (521), a hose (53), a chip removal pipe (6), and a mounting seat (601). An adjusting rod (21) is screwed into each clamp. A connecting seat (2) is provided between the ends of the two adjusting rods (21). A circular groove is opened in the connecting seat (2) to allow the sandblasting gun to pass through. The lower ends of the adjusting rods (21) are rotatably connected to the connecting seat (2). The clamp (1) is used to be fitted onto the glass sandblasting gun. A telescopic tube (3) is connected to the lower part of the clamp (1). The lower end of the telescopic tube (3) is connected to the top of the connecting seat (2). An inner cover (5) is provided at the lower part of the connecting seat (2). The inner cover (5) is a cone shape with a larger upper part and a smaller lower part. An opening is opened at the upper part of the inner cover (5) for the sandblasting gun to pass through. An outer cover (4) is provided at the bottom of the connecting seat (2). The outer cover (4) is set around the outside of the inner cover (5). A negative pressure gap (5100) is provided between the inner wall of the outer cover (4) and the outer wall of the inner cover (5). The top of the negative pressure gap (5100) is closed by the bottom of the connecting seat (2). A negative pressure pipe (52) is provided on one side of the connecting seat (2). The lower end of the negative pressure pipe (52) is connected to two branch pipes (521). The ends of the two branch pipes (521) are respectively connected to the internal space of the inner cover (5) and the outer cover (4). A hose (53) is provided at the upper end of the negative pressure pipe (52). A chip removal pipe (6) is connected at the end of the hose (53). A one-way valve is provided on both ends of the hose (53). The one-way valve only allows airflow to flow from the negative pressure pipe (52) into the chip removal pipe (6). A mounting seat (601) is provided at one end of the chip removal pipe (6). The mounting seat (601) is used to install the fan. A collection component is provided at the end of the chip removal pipe (6).

2. The negative pressure recovery device for glass sandblasting according to claim 1, characterized in that: The collection assembly includes a collection box (61), an exhaust pipe (62), a lower exhaust pipe (63), and a baffle plate (65). The end of the chip removal pipe (6) is connected to the collection box (61). An exhaust pipe (62) is provided on the side of the collection box (61) away from the chip removal pipe (6). Several baffle plates (65) are provided in the upper part of the collection box (61) along its length. The baffle plates (65) are arranged alternately in the upper part of the collection box (61). An airflow baffle channel is formed in the upper part of the collection box (61) through the baffle plates (65). The chip removal pipe (6) and the exhaust pipe (62) are respectively connected to the air inlet end and the air outlet end of the airflow baffle channel. A lower exhaust pipe (63) is provided in the lower part of the collection box (61).

3. A negative pressure recovery device for glass sandblasting according to claim 2, characterized in that: The lower part of the collection box (61) is provided with two cone-shaped parts that are larger at the top and smaller at the bottom. Two cone-shaped grooves (6100) are formed in the lower part of the collection box (61) through the cone-shaped parts. Each of the two cone-shaped parts is provided with a lower drain pipe (63), which is normally closed.

4. A negative pressure recovery device for glass sandblasting according to claim 3, characterized in that: It also includes guide strips (51). The inner walls of the outer cover (4) and the inner cover (5) are provided with several guide strips (51) along the circumference. The guide strips (51) are spiral strips, and their whole body extends spirally from low to high along the inside of the cover.

5. A negative pressure recovery device for glass sandblasting according to claim 4, characterized in that: It also includes an air valve (54) and an air supply pipe (541). An air valve (54) is provided on the side of the connecting seat (2) near the negative pressure pipe (52). The air outlet of the air valve (54) is connected to the lower part of the hose (53) through the air supply pipe (541).

6. A negative pressure recovery device for glass sandblasting according to claim 5, characterized in that: It also includes a viewing port (64), which is located on one side of the collection box (61), and a transparent plate is provided inside the viewing port (64).

7. A negative pressure recovery device for glass sandblasting according to claim 6, characterized in that: It also includes a semi-ring gasket (7), and both clamps of the clamp (1) are provided with a semi-ring gasket (7).

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