Pressure relief device for handheld paint spraying tank
By designing a handheld spray paint can pressure relief device, and using a bracket and paint-blocking liner to prevent paint splattering, safe and environmentally friendly pressure relief of the spray paint can is achieved, solving the environmental pollution and safety hazards in the recycling and disposal of spray paint cans.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI YIYITONG ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-01
AI Technical Summary
When paint cans are recycled and crushed without being depressurized, the paint vaporizes and sprays out, causing environmental pollution and safety hazards.
A handheld spray paint can pressure relief device was designed, including a bracket, a needle, and a can pressure component. The needle punctures the spray paint can to release the pressure downwards. The bracket and a paint-blocking liner prevent paint from splashing and vaporizing. An elastic element drives the spray paint can to detach from the needle. A transition groove and an oil funnel are used to collect the paint.
It enables rapid settling and safe collection of paint, reduces splashing and pollution from vaporized paint, and improves the safety and environmental friendliness of recycling.
Smart Images
Figure CN224181656U_ABST
Abstract
Description
Handheld spray paint can pressure relief device Technical Field
[0001] This utility model relates to the recycling and disposal of paint spray cans, and more particularly to a handheld paint spray can pressure relief device. Background Technology
[0002] Handheld spray paint cans (self-spraying paint / aerosol paint, or simply spray paint cans) are 20-30 cm high and 6-8 cm in diameter. Most are made of tinplate (tin-plated steel plate, wall thickness 0.18-0.25 mm) or aluminum (wall thickness 0.15-0.2 mm), and are lightweight and corrosion resistant.
[0003] The paint can is filled with paint and a certain amount of propellant. The propellant is usually a compressed gas or an easily vaporized liquid. When the outlet of the paint can is opened, the propellant drives the paint to be sprayed out explosively.
[0004] Therefore, while self-pressurized and self-spraying paint cans are convenient to use, their recycling and disposal are quite challenging. Specifically, when paint cans are directly crushed without depressurization, they are subjected to tearing and / or squeezing. The disorderly shaking of the crushed cans on the crusher causes the paint to vaporize and spray throughout the space above the crusher, creating environmental pollution that is difficult to manage. Vaporized paint requires a certain amount of time to settle, meaning that air is filled with gaseous paint for an extended period. Once this gaseous paint mixes and reaches its explosive limit, and encounters static electricity or open flames, it can easily cause a safety accident. Summary of the Invention
[0005] The present invention aims to solve at least one of the technical problems mentioned above, and provides a handheld spray paint can pressure relief device to eliminate paint splashing and vaporization into the air, facilitate better paint reception, and ensure safety.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A handheld spray paint can pressure relief device includes a bracket, a needle, and a can-pressing component. The needle is fixedly connected to the bracket with its tip pointing upwards. The can-pressing component is hinged or slidably connected to the bracket and is used to drive the spray paint can downwards so that the lower end of the spray paint can is pierced by the needle.
[0008] Compared with the prior art, the beneficial effects of this application include: the discharged paint settles directly downwards and quickly, and the paint that may splash upwards is blocked by the paint can itself, eliminating the splashing and vaporization of paint into the air, with very little vaporization space and vaporization equivalent; the paint after depressurization of the paint can settles directly downwards, making it easy to receive; the depressurization is safe and environmentally friendly; and the upper part of the support and pressure tank components are not easily contaminated by paint.
[0009] As an improvement to the above technical solution, the needle is a ridge needle with at least 3 ridges, and a vertical groove for paint leakage is formed between adjacent ridges.
[0010] As an improvement to the above technical solution, the bracket supports the lifting frame through an elastic element. The lifting frame is used to support the paint can, the can pressing element is used to press the paint can, and the elastic element is used to drive the paint can to rise and disengage from the needle.
[0011] As an improvement to the above technical solution, the lifting frame is connected to a paint-blocking liner. The lifting frame supports the paint can through the upper end of the paint-blocking liner. The paint-blocking liner is used to always surround the puncture area of the paint can when it descends, and the elastic element connected to the lifting frame is always isolated outside the paint-blocking liner.
[0012] As an improvement to the above technical solution, the bracket is integrally formed with an oil groove, and the needle is integrally formed with the bottom of the oil groove. When the paint-blocking liner descends with the paint can, the lower end of the paint-blocking liner is always inserted into the oil groove.
[0013] As an improvement to the above technical solution, the bracket is integrally formed with a transition groove, and the needle is integrally formed on the inner bottom of the transition groove. When the paint-blocking liner descends with the paint can, the lower end of the paint-blocking liner is always inserted into the transition groove. The bottom of the transition groove is a mesh plate, or the bottom of the transition groove is a frame covered with a slow-spraying mesh, slow-spraying yarn or slow-spraying felt.
[0014] As an improvement to the above technical solution, the lower part of the transition groove is used to place an oil tank, and the bracket is integrally formed with an oil draining funnel extending downward from the transition groove. The oil draining funnel is used to introduce the paint drained from the transition groove into the oil tank.
[0015] As an improvement to the above technical solution, the pressure vessel component is a handle hinged to the bracket. The handle is connected to the bracket via a tension spring, which is used to drive the handle to tilt upwards and return to its original position.
[0016] As an improvement to the above technical solution, the pressure can component is a handle hinged to the bracket. The handle is connected to the bracket via a tension spring, which drives the handle to tilt upwards and return to its original position. The lifting frame is used to lay the paint can horizontally. The handle is provided with a pressure block with an arc-shaped concave surface. When the paint can is pressed down, the arc-shaped concave surface straddles the paint can and rolls relative to the paint can.
[0017] As an improvement to the above technical solution, the pressure vessel component is slidably connected to the bracket, and the pressure vessel component is driven by a handle, which is used to drive the pressure vessel component to lift and lower. Attached Figure Description
[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:
[0019] Figure 1 is a schematic diagram of the handheld spray paint can pressure relief device according to an embodiment of the present invention.
[0020] Figure 2 is an exploded view of the handheld spray paint can pressure relief device shown in Figure 1, showing the upright frame for mounting the pressure can components;
[0021] Figure 3 is a partial cross-sectional view of the handheld spray paint can pressure relief device shown in Figure 1;
[0022] Figure 4 is an exploded view of the handheld spray paint can pressure relief device shown in Figure 3;
[0023] Figure 5 is a schematic diagram of the handheld spray paint can pressure relief device according to an embodiment of this utility model.
[0024] The accompanying drawings are only one specific embodiment of this utility model, and the form and structure of this specific embodiment should not limit the extension of other embodiments.
[0025] Support 100, transition channel 110, mesh plate 111, oil hopper 120, sleeve 130, pressure relief station 140, tank discharge station 150;
[0026] 200 needles, 210 vertical grooves for varnish removal;
[0027] Pressure tank component 300, pressure block 310, concave surface 311;
[0028] Elastic element 410, lifting frame 420, connecting rod 421;
[0029] Paint-resistant inner lining 500;
[0030] Tension spring 600;
[0031] 700 spray paint cans. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Referring to Figures 1 to 5, this utility model provides a handheld spray paint can pressure relief device, including a bracket 100, a needle 200, and a pressure can component 300. The needle 200 is fixedly connected to the bracket 100, such as by integral casting and forging, welding, screw locking, nut locking, or snap ring locking. The tip of the needle 200 faces upward. The pressure can component 300 is hinged or slidably connected to the bracket 100. The pressure can component 300 is used to drive the spray paint can 700 downward, so that the lower end of the spray paint can 700 is pierced by the needle. A gap is formed between the spray paint can 700 and the needle 200 for downward spraying of paint. The sprayed paint settles naturally, which facilitates the direct and rapid liquefaction of the paint. The vaporization space and vaporization equivalent of the sprayed paint are small, and more of it is aggregated into a settling mist.
[0034] Regarding the "lower end of the paint can 700," it can be understood that, referring to Figures 1 to 5, when the paint can 700 is horizontally punctured, the "lower end of the paint can 700" refers to the lower part of the peripheral wall of the horizontal paint can 700; when the paint can 700 is upright or inverted, the "lower end of the paint can 700" refers to the bottom or top of the paint can 700. The bottom or top of the paint can 700 is thicker than its peripheral wall, which is typically made of 0.18-0.25mm thick tinplate or 0.15-0.20mm thick aluminum. The peripheral wall of the paint can 700 is a curved panel, making it more prone to warping upon puncture.
[0035] Compared with the prior art, the beneficial effects of this application include: the discharged paint settles directly downwards and quickly, and the paint that may splash upwards is blocked by the paint can itself, eliminating the splashing and vaporization of paint into the air, with very little vaporization space and vaporization equivalent; the paint after the 700 pressure is released from the paint can directly falls downwards, making it easy to receive; the pressure is released safely and environmentally; and the upper part of the support and pressure can components are not easily contaminated by paint.
[0036] In some embodiments of this utility model, the puncture needle 200 is a ridged barb with at least three ridges, and a vertical groove 210 for draining paint is formed between adjacent ridges. After the paint can 700 is punctured by the ridged barb, the paint can 700 forms a multi-lobed opening, with each lobe curled and deformed, resembling an open hollow flower. This creates a downward draining gap between the paint can 700 and the ridged barb, corresponding to the vertical groove 210 for draining paint. This allows the paint can 700 to remain compressed and drain pressure safely and stably downwards before the ridged barb is removed, preventing explosive pressure release after the ridged barb is removed.
[0037] In some embodiments of this utility model, the pressure vessel 300 is slidably connected to the bracket 100, and the pressure vessel 300 is driven by a handle or pressure lever, which is used to drive the pressure vessel 300 to rise and fall. For example, the pressure vessel 300 is connected to a rack, and the gear meshed with the rack is connected to the handle. The handle drives the gear to rotate, and the gear drives the rack and the pressure vessel 300 to rise and fall. Alternatively, the bracket 100, the pressure lever, the pressure vessel 300, and the connecting rod form a parallelogram linkage mechanism. The hinge point between the pressure lever and the bracket 100, and the hinge point between the connecting rod and the bracket 100 are on the same vertical line. The pressure vessel 300 extends vertically, and the pressure lever swings up and down, thereby causing the pressure vessel 300 to move up and down.
[0038] Because the paint can 700 is a self-pressurized spray paint can, after the needle 200 punctures the can, the amount of paint remaining inside is almost entirely ejected by the self-pressure, with a very small amount flowing out through stillness, or remaining on the outer wall after being ejected at low pressure. In some designs, the pressure can component 300 is equipped with fixtures for clamping the paint can 700, such as elastic grippers. The pressure can component 300 both causes the paint can 700 to tilt or descend, and also causes it to tilt or rise, thus detaching the paint can 700 from the needle 200.
[0039] In the above configuration, when the paint can 700 swings upwards, a small amount of paint that may remain on the outer wall of the paint can 700 may drip onto components such as the bracket 100; when the paint can 700 is removed from the tooling, a small amount of paint that may remain on the outer wall of the paint can 700 may splash onto components such as the pressure can 300 and the bracket 100. To solve these two problems, the following lifting frame 420 is provided.
[0040] In some embodiments of this utility model, the bracket 100 supports the lifting frame 420 via an elastic element 410. The lifting frame 420 supports the paint can 700, the pressure can component 300 presses down on the paint can 700, and the elastic element 410 drives the paint can 700 to rise and disengage from the needle 200. The elastic element 410 can be a spring, disc spring, elastic pad, etc.
[0041] In some embodiments of this utility model, the lifting frame 420 is connected to a paint-blocking liner 500. The lifting frame 420 supports the paint can 700 through the upper end of the paint-blocking liner 500. The paint-blocking liner 500 is used to always surround the puncture area of the paint can 700 when it descends with the paint can 700, and the elastic member 410 connected to the lifting frame 420 is always isolated outside the paint-blocking liner 500. The area around the punctured area of the paint can 700 is surrounded by a paint-blocking liner 500, and the area above the punctured area is covered by the paint can 700 itself. The paint that may be sprayed from the side of the paint can 700 can only reach the paint-blocking liner 500, and then flows down along the inner wall of the paint-blocking liner 500. The lifting frame 420, elastic element 410 and other components are all isolated and protected. The entire pressure relief device is relatively neat and easy to clean. Only the paint-blocking liner 500, the puncture needle 200, and the oil tank, oil pan and the frame below the paint-blocking liner 500 need to be cleaned.
[0042] In some embodiments of this utility model, the bracket 100 is integrally formed with an oil groove, the bottom of the oil groove is integrally formed with a needle 200, and the paint-blocking liner 500 and the lifting frame 420 are lowered with the paint can 700, and the lower end of the paint-blocking liner 500 is always inserted into the oil groove.
[0043] In the aforementioned oil tank setup, the oil tank requires a certain depth, and the needles 200 are relatively tall. For example, if the oil tank depth D ≥ 20cm, the needle height H ≥ D, to prevent the oil surface from splashing due to the downward spray of paint, and to prevent the splashed paint from contaminating the paint barrier lining 500 and the paint can. Preferably, the oil tank is divided into an upper chamber and a lower chamber by a slow-spray net, slow-spray yarn, or slow-spray felt.
[0044] At the same thickness, the needle 200 is taller, resulting in relatively poor rigidity. To address the rigidity-to-performance ratio of the needle 200, in some embodiments of this invention, the support 100 is integrally formed with a transition groove 110, the inner bottom of which is integrally formed with the needle 200. When the paint-blocking liner 500 and the lifting frame 420 descend with the paint can 700, the lower end of the paint-blocking liner 500 is always inserted into the transition groove 110. The lower part of the transition groove 110 is used to place the oil tank. The bottom of the transition groove 110 is a mesh plate 111, or the bottom of the transition groove 110 is a frame covered with a slow-spraying mesh, slow-spraying yarn, or slow-spraying felt. The through holes of the frame are larger than those of the mesh plate 111, allowing the mesh plate 111 and the frame with the slow-spraying layer to drain paint more smoothly.
[0045] Further optimized, the bottom of the transition groove 110 is provided with a cross-shaped reinforcing rib. Referring to Figure 2, the area at the bottom of the transition groove 110 without mesh corresponds to the cross-shaped reinforcing rib. In some embodiments of this utility model, the bracket 100 is provided with a sleeve 130, which is located at the corner of the transition groove 110. The peripheral wall of the transition groove 110 and the sleeve 130 together strengthen the transition groove 110. The lifting frame 420 is provided with a connecting rod 421 suitable for being sleeved by the elastic element 410. During the lifting process of the lifting frame 420 rising and falling with the paint can 700, the lower end of the connecting rod 421 is always inserted into the sleeve 130. The paint in the transition groove 110 can only stain the lower end of the sleeve 130, and is not likely to contaminate the inside of the sleeve 130, the connecting rod, and the elastic element.
[0046] The lower part of the transition groove 110 is used to place the oil tank. The support 100 is integrally formed with an oil drain 120 extending downward from the transition groove 110. The oil drain 120 is used to guide the paint drained from the transition groove 110 into the oil tank. The peripheral wall of the oil drain 120 also substantially reinforces the transition groove 110, strengthening the support for the needle 200. The oil drain 120 can be cylindrical, inclined cylindrical, conical, inclined conical, or inclined pointed.
[0047] Ideally, the pressure vessel component 300 is the handle of the hinged bracket 100. The handle is connected to the bracket 100 via a tension spring 600, which is used to drive the handle to tilt upwards and return to its original position.
[0048] In some embodiments of this utility model, the lifting frame 420 is used to horizontally place the paint can 700, and the handle is provided with a pressure block 310 with an arc-shaped concave surface 311. The arc-shaped concave surface 311 is used to straddle the paint can 700 and roll relative to the paint can 700 when pressing down on it. The paint can 700 descends in a stable shape, with stable force, and without easily shifting or being punctured.
[0049] In some embodiments of this utility model, the bracket is provided with a pressure relief station 140 and two can placement stations 150 located on both sides of the pressure relief station 140. The can placement stations 150 are used to store depressurized paint cans or paint cans to be depressurized. Specifically, depending on the worker's hand preference (left-handed or right-handed), one can placement station 150 is used to store paint cans to be depressurized, and the other can placement station 150 is used to store depressurized paint cans.
[0050] Multiple support rods are spaced side by side at can placement station 150, with the support rods extending away from the depressurization station 140. Can placement station 150 can hold an oil pan, where any trace amount of paint that may remain in the depressurized paint can will be further discharged when the can is placed at can placement station 150.
[0051] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.
Claims
1. A handheld spray paint can pressure relief device, characterized in that, Includes a bracket (100) and: a needle (200) fixedly connected to the bracket (100), the tip of the needle (200) facing upward; a pressure can component (300) hinged or slidably connected to the bracket (100), the pressure can component (300) being used to drive the paint can (700) downward, so that the lower end of the paint can (700) is pierced by the tip.
2. The handheld spray paint can pressure relief device according to claim 1, characterized in that, The needle (200) is a prismatic needle with at least three ridges, and a vertical groove (210) for varnish discharge is formed between adjacent ridges.
3. The handheld paint can pressure relief device according to claim 1, characterized in that, The bracket (100) supports the lifting frame (420) via the elastic element (410). The lifting frame (420) is used to support the paint can (700). The can pressing element (300) is used to press the paint can (700). The elastic element (410) is used to drive the paint can (700) to rise and disengage from the needle (200).
4. The handheld spray paint can pressure relief device according to claim 3, characterized in that, The lifting frame (420) is connected to a paint-blocking liner (500). The lifting frame (420) supports the paint can (700) through the upper end of the paint-blocking liner (500). The paint-blocking liner (500) is used to always surround the puncture area of the paint can (700) when it descends, and the elastic element (410) connected to the lifting frame (420) is always isolated outside the paint-blocking liner (500).
5. The handheld spray paint can pressure relief device according to claim 4, characterized in that, The bracket (100) is integrally formed with an oil groove, and the needle (200) is integrally formed with the bottom of the oil groove. When the paint-blocking liner (500) descends with the paint can (700), the lower end of the paint-blocking liner (500) is always inserted into the oil groove.
6. The handheld spray paint can pressure relief device according to claim 4, characterized in that, The bracket (100) is integrally formed with a transition groove (110), and the inner bottom of the transition groove (110) is integrally formed with the needle (200). When the paint-blocking liner (500) descends with the paint can (700), the lower end of the paint-blocking liner (500) is always inserted into the transition groove (110). The bottom of the transition groove (110) is a mesh plate (111), or the bottom of the transition groove (110) is a frame covered with a slow-spraying mesh, slow-spraying yarn or slow-spraying felt.
7. The handheld paint can pressure relief device according to claim 6, characterized in that, The transition groove (110) is used to place an oil tank below it. The bracket (100) is integrally formed with an oil drain (120) extending downward from the transition groove (110). The oil drain (120) is used to introduce the paint drained from the transition groove (110) into the oil tank.
8. The handheld spray paint can pressure relief device according to any one of claims 1 to 7, characterized in that, The pressure vessel component (300) is a handle hinged to the bracket (100). The handle is connected to the bracket (100) via a tension spring (600), which is used to drive the handle to tilt upwards and return to its original position.
9. The handheld spray paint can pressure relief device according to any one of claims 3 to 7, characterized in that, The pressure can component (300) is a handle hinged to the bracket (100). The handle is connected to the bracket (100) via a tension spring (600). The tension spring (600) is used to drive the handle to tilt upward and return to its original position. The lifting frame (420) is used to lay the paint can (700) horizontally. The handle is provided with a pressure block (310) with an arc concave surface (311). When the arc concave surface (311) presses down on the paint can (700), it straddles the paint can (700) and rolls relative to the paint can (700).
10. The handheld spray paint can pressure relief device according to any one of claims 1 to 7, characterized in that, The pressure vessel component (300) is slidably connected to the bracket (100), and the pressure vessel component (300) is driven by a handle, which is used to drive the pressure vessel component (300) to lift.