A dust collection device assisted by a one-way air suction ball

Abstract

The application discloses a dust collection device assisted by a one-way air suction ball, and belongs to the technical field of dust monitoring equipment. The device comprises a one-way air suction ball and a dust collection pipe. The one-way air suction ball comprises a silica gel air suction bag, an air inlet duckbill valve and an air outlet duckbill valve. The dust collection pipe comprises an upper collection pipe and a lower collection pipe. The upper collection pipe is provided with a collection pipe air outlet, a collection pipe inner ring, a collection pipe air outlet fence, high-density sponge and a filter membrane clamp. The lower collection pipe is provided with a collection pipe positioning inner ring, a collection pipe convex spiral, a dust collection cavity, a collection pipe air inlet duckbill valve, a collection pipe air inlet pipe and a horn air inlet. The upper collection pipe and the lower collection pipe are connected through recessed spiral and convex spiral embedding. When in use, the air suction ball is pinched by hand to generate upward suction force, so that dust falls into the collection pipe and is deposited in the dust collection cavity through the filter membrane clamp. The dust collection device does not need power supply and is simple to operate, and is suitable for rapid collection of dust on the surface of objects in a working place.

Description

Technical Field

[0001] This invention relates to the field of dust monitoring equipment technology, specifically a dust collection device that can be assisted by a one-way suction balloon. Background Technology

[0002] Currently, the collection and measurement of dust in workplace occupational hazard monitoring mainly follows GBZ / T 192.4-2007 "Determination of Dust in Workplace Air - Part 4: Free Silica Content". This standard stipulates that the dust sample amount should generally be greater than 0.1g. Dust in the air can be collected at high flow rates using a 75mm diameter filter membrane, or freshly settled dust at the breathing zone height can be collected at the sampling point, and the sampling method and sample source should be recorded.

[0003] In practice, sampling personnel often use the method of collecting fresh settling dust, but the standard does not specify specific collection tools and operating procedures. Current methods typically use paper scraps, brushes, or fingers as collection tools to sweep dust from object surfaces. This method has the following problems: First, the operation is difficult to standardize, easily leading to the collection of large particles of debris from the object surface, causing a deviation between the free silica content in the dust sample and the actual value, affecting the accuracy of the monitoring results; second, the collection efficiency is low. With the widespread application of industrial dust removal technology, the amount of dust on object surfaces in many workplaces is low, and traditional sweeping methods are insufficient to collect a sufficient amount (≥0.1g) of dust for testing; third, the operation varies greatly among different sampling personnel, making it difficult to guarantee the representativeness and consistency of the samples.

[0004] Existing technologies also include some dust sampling devices. For example, some devices use electric fans or sampling pumps as negative pressure sources, collecting dust through dust collection hoods and filters. However, these devices usually require an external power supply, are large and heavy, making them inconvenient to carry to complex sites such as mines and workshops for rapid sampling, and pose safety hazards when used in environments with dust explosion risks. In addition, some non-powered dust collection devices use dust collection cylinders or petri dishes for passive gravity settling collection, but this method requires pre-placement, is time-consuming, and is only suitable for natural settling in open spaces, not for active collection of dust from object surfaces. A patent (CN108548697A) from the Chinese Academy of Forestry discloses a dust collector, including a straight cylindrical cylinder and a circular funnel structure set inside the cylinder, mainly used for long-term natural settling collection of atmospheric dust, but not suitable for on-site active collection of dust from factory object surfaces.

[0005] Furthermore, in the field of occupational health monitoring, there are already devices that use negative pressure for dust collection, such as baghouse dust collector cleaning and sampling devices and negative pressure sampling devices for floating dust in tunnel spaces. However, these devices mostly use electric negative pressure sources, have complex structures, and are large in size. They are mainly suitable for dust sampling in fixed locations or specific industrial equipment, and are not suitable for rapid on-site collection of settled dust from object surfaces. Chinese patent CN217845755U discloses a sample collector for determining the free silica content in dust, including a dust collection hood, a dust collection filter membrane box, a fan, and a tripod. It collects dust by generating negative pressure through the fan, but its overall structure is large and requires tripod support for fixation, making it inconvenient for handheld operation and rapid on-site sampling.

[0006] In summary, the existing technology lacks a lightweight dust collection device that can collect dust from object surfaces in a standardized manner, is easy to operate, avoids the mixing of large particles, requires no power supply, and is easy to carry to various factory sites for rapid sampling. Summary of the Invention

[0007] The purpose of this invention is to overcome the aforementioned technical difficulties and provide a dust collection device that is compact in structure, easy to operate, and can be assisted by a unidirectional suction balloon.

[0008] To achieve the above objectives, the technical solution adopted is as follows:

[0009] The beneficial effects of adopting the above scheme are as follows: After the application of this dust collection device assisted by a one-way suction balloon:

[0010] The dust collection tube utilizes a combination structure consisting of a horn-shaped air inlet, a collection tube air inlet, a duckbill valve at the collection tube air inlet, a dust collection chamber, a filter membrane clamp, a high-density sponge, a collection tube air outlet, and a collection tube air outlet. Under the negative pressure generated by manual unidirectional suction, dust is drawn from bottom to top through each layer. The filter membrane clamp separates the air from the dust, causing the dust to settle in the dust collection chamber. This solves the problems of improper operation and easy mixing of large particles, leading to sample deviation, when using paper or brushes to sweep dust from object surfaces in existing technologies. It also avoids the time-consuming, labor-intensive, and safety-hazardous defects of the petri dish placement method, achieving standardized collection of dust samples and ensuring collection quality.

[0011] By using a one-way suction balloon, when the silicone suction balloon is squeezed inward, the inlet duckbill valve closes and the gas is discharged from the outlet duckbill valve. When the balloon is released, the outlet duckbill valve closes and the gas enters from the inlet duckbill valve. This process can be repeated to achieve one-way suction, eliminating the need for an external power supply or sampling pump. This makes it suitable for factory sites without power access and environments with a risk of dust explosion. Furthermore, the suction power can be adjusted by controlling the speed at which the suction balloon is squeezed and released. This method can be used to collect dust even when there is only a small amount of dust on the surface of objects in the workplace, thus expanding the applicable scenarios for dust sampling.

[0012] By using high-density sponge, after the airflow passes through the filter membrane, the trace amounts of dust remaining in the gas can be further adsorbed and intercepted by the high-density sponge, preventing dust from entering and contaminating the suction ball and ensuring that the suction ball can be reused for a long time.

[0013] By setting up the horn-shaped air inlet, the dust collection range can be increased, while the suction force can be reduced to avoid excessively large particles entering the collection chamber, thus ensuring the purity of the sample. By setting up the duckbill valve at the air inlet of the collection pipe, gas backflow can be prevented from affecting the collection efficiency, and the airflow can be made to linger in the dust collection chamber to promote dust settling.

[0014] The dust collection chamber is detachably sealed by the interlocking of concave and convex spirals between the upper and lower collection tubes. After collection, the spirals can be unscrewed to pour the dust from the collection chamber directly into the sample bag, facilitating sample transfer and reuse of the collection tubes.

[0015] By setting different thicknesses for the inner ring of the collection tube, the installation position of the internal components can be adjusted as needed; by setting the air outlet of the collection tube, the high-density sponge and filter membrane clamp can be supported and fixed to prevent collapse and displacement during use; by setting the positioning inner ring of the collection tube, the specific position of the internal components can be fixed and the components can be reinforced.

[0016] This invention features a compact structure, with each component of the collection tube being a circular structure with an outer diameter of 45mm. It is easy to assemble, small in size, and easy to carry to various factory sites. The main body of the collection tube is made of high-transparency acrylic hard plastic, which is durable, washable and reusable, and has low cost per sampling, making it suitable for large-scale promotion and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention, which can be made from a unidirectional suction balloon.

[0018] Figure 2 This is a schematic diagram of the dust collection pipe.

[0019] Figure 3 for Figure 2 A schematic diagram of the internal structure of the dust collection pipe.

[0020] In the diagram, 1. Collection tube outlet; 2. Collection tube inner ring; 3. Collection tube outlet baffle; 4. High-density sponge; 5. Filter membrane clamp; 6. Collection tube inner ring; 7. Upper collection tube; 8. Collection tube concave spiral; 9. Positioning inner ring; 10. Collection tube convex spiral; 11. Lower collection tube; 12. Collection tube inlet duckbill valve; 13. Dust collection chamber; 14. Collection tube inlet pipe; 15. Horn inlet; 17. Outlet duckbill valve; 18. Silicone suction chamber; 19. One-way suction bag; 20. Suction balloon outlet; 21. Suction balloon inlet; 22. Suction balloon inlet duckbill valve. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1:

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a dust collection device that can be assisted by a one-way suction balloon, comprising a one-way suction balloon and a dust collection tube.

[0024] The one-way air-inhalation balloon includes an air outlet (20), an air outlet duckbill valve (17), a silicone air-inhalation chamber (18), a silicone air-inhalation bladder (19), an air inlet (21), and an air inlet duckbill valve (22). The silicone air-inhalation bladder (19) is an ellipsoidal elastic silicone ball; both the air inlet duckbill valve (22) and the air outlet duckbill valve (17) are silicone duckbill valves. When the silicone air-inhalation bladder (19) is squeezed inward, the air inlet duckbill valve (22) closes, and the internal gas is discharged from the air outlet duckbill valve (17); when the grip is relaxed, the silicone air-inhalation bladder (19) rebounds, the air outlet duckbill valve (17) closes, and the gas enters the silicone air-inhalation bladder (19) from the air inlet duckbill valve (22) until it reaches saturation. This process can be repeated to achieve one-way air inhalation.

[0025] The dust collection pipe includes an upper collection pipe (7) and a lower collection pipe (11). The upper collection pipe (7) is provided with a collection pipe outlet (1), a collection pipe inner ring (2), a collection pipe outlet baffle (3), a high-density sponge (4), and a filter membrane clamp (5) from top to bottom. The lower end of the upper collection pipe (7) is provided with a collection pipe concave spiral (8). The lower collection pipe (11) is provided with a collection pipe positioning inner ring (9), a collection pipe convex spiral (10), a dust collection chamber (13), a collection pipe inlet duckbill valve (12), a collection pipe inlet pipe (14), and a horn inlet (15) from top to bottom. The upper collection pipe (7) and the lower collection pipe (11) are connected by the collection pipe concave spiral (8) and the collection pipe convex spiral (10), and tightening them can ensure the overall airtightness of the collection pipe. The upper collection pipe (7) and the lower collection pipe (11) are both made of high-transparency acrylic hard plastic material with an inner diameter of 45mm. The inner ring (2) of the collection tube, the air outlet (3) of the collection tube, the high-density sponge (4) and the filter membrane clamp (5) all have an outer diameter of 45 mm.

[0026] The inner ring (2) of the collection tube is a ring-shaped high-transparency acrylic hard plastic ring with an outer diameter of 45mm and an inner diameter of 40mm. The air outlet (3) of the collection tube is a high-transparency acrylic hard plastic disc with an outer diameter of 45mm and a thickness of 2mm, and has multiple ventilation holes 32 inside. The high-density sponge (4) is a high-density sponge with an outer diameter of 45mm. The filter membrane clip (5) is a universal dust sampling clip for workplace occupational hazard factor monitoring sampling instruments, with an outer diameter of 45mm, and a 40mm polypropylene filter membrane is clamped inside the filter membrane clip. The positioning inner ring (9) of the collection tube is a high-transparency acrylic hard plastic ring with an outer diameter of 45mm, an inner diameter of 40mm, and a thickness of 5mm, and is fixed to the upper end of the lower collection tube (11). The duckbill valve (12) of the air inlet of the collection tube is a normally closed duckbill silicone valve with an inner diameter of 10mm, and is set inside the lower collection tube (11). The collecting pipe inlet pipe (14) is a high-transparency acrylic pipe with an outer diameter of 10 mm and an inner diameter of 6 mm, which is embedded in the lower end of the lower collecting pipe (11). The horn-shaped air inlet (15) is connected to the outer end of the collecting pipe inlet pipe (14).

[0027] Assembly: Assemble the upper collecting tube (7) and lower collecting tube (11) and all accessories from top to bottom as shown in the figure. A 40mm polypropylene filter membrane is clamped in the center of the filter membrane clamp (5). The high-density sponge (4) is placed below the air outlet (3) of the collecting tube. The inner ring (2) of the collecting tube is used to adjust the position of the internal components, and the inner positioning ring (9) of the collecting tube is used to fix the position of the internal components. Tighten the concave spiral (8) of the upper collecting tube (7) and the convex spiral (10) of the lower collecting tube (11) to complete the assembly of the dust collection tube. Connect the air outlet (1) of the assembled dust collection tube to the air inlet (21) of the one-way suction balloon through a silicone hose.

[0028] Airtightness test: Hold one hand over the air inlet of the horn (15), squeeze the one-way suction balloon with the other hand and then relax it. Feel whether there is suction to hold your palm. If there is, the airtightness is good. If not, check whether the connection of each component is tightened or reassembled.

[0029] Usage: Place the device in the location where dust collection is required. Squeeze and release the one-way suction balloon to generate an upward airflow, causing the dust to enter the dust collection tube from bottom to top. The airflow carrying the dust enters through the horn inlet (15), passes through the collection tube inlet pipe (14), and the collection tube inlet duckbill valve (12), and enters the dust collection chamber (13). When passing through the filter membrane clamp (5), the dust is deposited in the dust collection chamber (13) due to the obstruction of the filter membrane. The airflow continues to rise, and the trace amount of dust remaining in the gas is further adsorbed and intercepted by the high-density sponge (4) to prevent the dust from entering and contaminating the one-way suction balloon. The purified gas is discharged through the ventilation hole 32 of the collection tube outlet (3) and the collection tube outlet (1). The collection tube inlet duckbill valve (12) can prevent gas backflow from affecting the collection efficiency, and make the airflow linger in the dust collection chamber (13) to promote dust settling. The horn-shaped air inlet (15) can improve dust collection efficiency while preventing large particles from being sucked in.

[0030] Collection: When the dust in the dust collection chamber (13) reaches the required sample amount, unscrew the concave screw (8) and the convex screw (10) of the collection tube, pour the dust in the dust collection chamber (13) into the sample bag, mark it, and the dust collection is completed.

[0031] Example 2:

[0032] This embodiment provides a method for using a dust collection device that can be assisted by a one-way suction balloon, which adopts the device structure described in Embodiment 1.

[0033] Preparation before sampling: Assemble the upper collection tube 7, lower collection tube 11, and all accessories as shown in the figure from top to bottom. Insert a 40mm polypropylene filter membrane into the center of the filter membrane clamp 5. Place the high-density sponge 4 below the air outlet 3 of the collection tube. Engage and tighten the concave spiral 8 of the upper collection tube 7 with the convex spiral 10 of the lower collection tube 11. Connect the air outlet 1 of the assembled dust collection tube to the air inlet 21 of the one-way suction balloon via a silicone hose. Hold one hand over the horn-shaped air inlet 15, and squeeze the one-way suction balloon with the other hand, then release to check the airtightness of the device.

[0034] On-site sampling: Carry the device to the workplace where dust collection is required. Aim the horn-shaped air inlet 15 at the dust on the object surface. Squeeze and release the one-way suction balloon to generate an upward suction force, causing the dust on the object surface to be drawn into the dust collection tube through the horn-shaped air inlet 15. The dust enters the dust collection chamber 13 through the collection tube inlet pipe 14 and the duckbill valve 12. Under the obstruction of the filter membrane clamp 5, the dust is deposited in the dust collection chamber 13. The purified gas is further filtered by the high-density sponge 4 before being discharged. Continuously squeeze and release the one-way suction balloon until a sufficient amount of dust sample is collected in the dust collection chamber 13.

[0035] Post-sampling processing: After sampling, unscrew the concave screw 8 and convex screw 10 of the collection tube to pour the dust from the dust collection chamber 13 into the sample bag, mark it, and the dust collection is complete. Clean the residual dust in the upper collection tube 7 and lower collection tube 11, replace the filter membrane clip 5 and high-density sponge 4, and reassemble for the next sampling.

[0036] Example 3:

[0037] This embodiment provides a sample preservation method using a dust collection device assisted by a one-way suction balloon.

[0038] After sampling, if the sample cannot be transferred immediately, the upper collection tube 7 and the lower collection tube 11 can be kept in a closed and fitted state. The sample should be marked on the outer wall of the collection tube, including information such as the sampling date, sampling location, and sampling personnel. The entire collection tube can be stored and transported as a sample tube to avoid sample confusion and contamination.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The device includes a one-way suction balloon and a dust collection tube. The one-way suction balloon includes a suction balloon outlet (20), a suction balloon outlet duckbill valve (17), a silicone suction chamber (18), a silicone suction bag (19), a suction balloon inlet (21), and a suction balloon inlet duckbill valve (22). The silicone suction bag (19) is ellipsoidal, and the suction balloon inlet duckbill valve (22) and the suction balloon outlet duckbill valve (17) are both silicone duckbill valves. The dust collection pipe includes an upper collection pipe (7) and a lower collection pipe (11). The upper collection pipe (7) is provided with a collection pipe outlet (1), a collection pipe inner ring (2), a collection pipe outlet baffle (3), a high-density sponge (4), and a filter membrane clip (5) from top to bottom. The lower collection pipe (11) is provided with a collection pipe positioning inner ring (9), a collection pipe convex spiral (10), a dust collection chamber (13), a collection pipe inlet duckbill valve (12), a collection pipe inlet pipe (14), and a horn inlet (15) from top to bottom. The lower end of the upper collection pipe (7) is provided with a collection pipe concave spiral (8), and the upper end of the lower collection pipe (11) is provided with a collection pipe convex spiral (10). The upper collection pipe (7) and the lower collection pipe (11) are connected to each other by the collection pipe concave spiral (8) and the collection pipe convex spiral (10).

2. The dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The inner diameter of the upper collecting pipe (7) and the lower collecting pipe (11) is 45 mm, and the outer diameter of the inner ring (2), the air outlet (3), the high-density sponge (4) and the filter membrane clamp (5) is 45 mm.

3. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The inner ring (2) of the collection tube is an annular ring with an outer diameter of 45 mm and an inner diameter of 40 mm, and is made of high-transparency acrylic hard plastic.

4. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The air outlet of the collection pipe (3) is a high-transparency acrylic hard plastic disc with an outer diameter of 45mm and a thickness of 2mm, and has a ventilation hole (32) inside.

5. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The filter clip (5) is a sampling clip with an outer diameter of 45 mm, and a 40 mm polypropylene filter membrane is inserted inside the filter clip (5).

6. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The inner ring (9) of the collection tube is a high-transparency acrylic hard plastic ring with an outer diameter of 45mm, an inner diameter of 40mm, and a thickness of 5mm, and is fixed to the upper end of the lower collection tube (11).

7. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The duckbill valve (12) at the air inlet of the collection pipe is a normally closed duckbill silicone valve with an inner diameter of 10mm, and is located inside the lower collection pipe (11).

8. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: The collecting pipe inlet pipe (14) is a high-transparency acrylic pipe with an outer diameter of 10 mm and an inner diameter of 6 mm, which is embedded in the lower end of the lower collecting pipe (11). The horn-shaped air inlet (15) is connected to the outer end of the collecting pipe inlet pipe (14).

9. A dust collection device assisted by a unidirectional suction balloon according to claim 1, characterized in that: Both the upper collection tube (7) and the lower collection tube (11) are made of high-transparency acrylic hard plastic.

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