Paint roller with material recycling structure

Abstract

The present invention discloses a paint roller with a material return structure, comprising a central feed pipe, the upper half of which is provided with a plurality of feed pipe openings; a positioning fixing seat and a polishing sealing gasket sleeved on the central feed pipe, a first sealing ring disposed between the front end of the positioning fixing seat and the rear end of the polishing sealing gasket; an outer cylinder rotatably sleeved on the central feed pipe, the outer cylinder being provided with a plurality of first material discharge holes, the outer wall of the outer cylinder being sleeved with roller cotton; a drip-proof material return cover rotatably sleeved on the central feed pipe, the drip-proof material return cover being connected to the rear end of the outer cylinder; the front half of the central feed pipe being rotatably positioned within a limiting cavity, a positioning card locking end being disposed on a rear end of a protruding portion, a C-shaped elastic positioning card disposed within the limiting cavity and being locked by the positioning card locking end. The present invention has the beneficial effects of saving costs, reducing the labor intensity of operators, improving painting effects, and having a simple structure, easy assembly and disassembly, and being non-destructive.

Description

Technical Field

[0001] The present invention relates to a paint roller, in particular to a paint roller with a material recycling structure. Background Art

[0002] Paint rollers are widely used in decoration of walls and ceilings. When in use, the operator needs to dip the roller into paint every time he uses the roller, and repeat the dipping action continuously, which leads to high labor intensity and low efficiency for the operator. At the same time, in the process of dipping the paint through the feed roller, paint keeps dripping onto the ground, which not only wastes materials but also pollutes the surrounding environment. In order to reduce the labor intensity and efficiency of the operator, technicians have developed a feed roller with automatic feeding. Specifically, the feed roller is connected to a feed bucket filled with paint (feeding device) through a hose, and the paint is delivered to the feed roller by a feed pump, so that the paint is applied. However, this existing structure still has the following defects:

[0003] 1) Although the automatic feeding method improves efficiency and reduces the labor intensity of operators, it does not have an anti-drip function due to the continuous feeding method, resulting in serious leakage, affecting the construction quality and causing more serious pollution to the surrounding environment (after painting, cleaning up the leaked material is not only time-consuming and laborious, but also extremely difficult to clean up thoroughly), and more raw materials are wasted. Even if some rollers have an anti-drip function, it only reduces the amount of dripping, but cannot completely solve the dripping problem. In addition, the dripping problem will become more and more obvious as the use time increases.

[0004] 2) In order to reduce the overall weight of the roller, a smaller diameter roller is usually used for painting. However, when renovating the wall, since the wall has been painted with non-absorbent paint, the roller with a smaller diameter is prone to slipping, which affects the painting effect. Although the slipping problem can be solved by increasing the contact area between the roller and the wall, the weight of the entire roller is increased, and the painting time is generally longer, which increases the labor intensity of the operator.

[0005] 3) It is not easy to disassemble and assemble, which makes it inconvenient to replace and clean parts, which not only reduces the service life but also affects the effect of the next painting;

[0006] 4) The amount of paint cannot be controlled according to actual needs during the feeding process, resulting in poor painting quality;

[0007] 5) When painting, the user will hold the feed roller horizontally or vertically according to the actual painting needs. When the roller brush is used vertically or horizontally, the paint will flow quickly to the bottom of the roller due to the influence of the paint's gravity, resulting in serious uneven feeding of the upper and lower ends of the roller surface, which greatly affects the painting effect. At the same time, since dripping cannot be prevented, the leakage will be more serious when the operator uses the feed roller vertically.

[0008] Therefore, those skilled in the art are committed to providing a paint roller with a material recycling structure that can effectively solve the above technical problems. Summary of the Invention

[0009] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a paint roller with a material recycling structure that can effectively solve the above-mentioned technical problems.

[0010] To achieve the above object, the present invention provides a paint roller with a material return structure, comprising a central shaft feed pipe, wherein the upper half of the central shaft feed pipe is provided with a plurality of feed pipe openings, and the tail end of the central shaft feed pipe is provided with a maintenance latch;

[0011] The central axis feeding pipe is sleeved with a positioning fixing seat and a polishing sealing gasket, and a first sealing ring is provided between the front end of the positioning fixing seat and the rear end of the polishing sealing gasket;

[0012] The central axis feeding pipe is rotatably sleeved with an outer cylinder, the outer cylinder is provided with a plurality of first discharge holes, and the outer wall of the outer cylinder is sleeved with roller cotton;

[0013] The central axis feed pipe is rotatably sleeved with an anti-drip return cover, which is connected to the rear end of the outer cylinder. The anti-drip return cover includes a connecting section, which is rotatably fitted with the front end of the polishing sealing gasket; a return section is provided on the outside of the connecting section, and a return hole connected to the drum cotton is provided between the return section and the connecting section;

[0014] The front half of the central axis feeding tube is detachably sleeved with a C-shaped elastic positioning card, the front end of the outer cylinder is provided with a front end cover, the front end cover is detachably connected to the front end of the outer cylinder, the rear end of the front end cover is provided with a protrusion, and the rear end of the protrusion is provided with a limited position cavity;

[0015] The front half of the central axis feeding tube is rotatably located in the limiting cavity, and the rear end of the protrusion is provided with a positioning card locking end. The C-shaped elastic positioning card is located in the limiting cavity and is limited by the positioning card locking end.

[0016] Preferably, the inner end of the connecting section is provided with a fitting section, the inner end of the fitting section is provided with a circle of first ridges for rotationally cooperating with the central axis feed tube, the connecting section is rotatably fitted with the front end of the polishing sealing gasket through the rear end of the fitting section, and the front end of the polishing sealing gasket is a polished surface; a second sealing ring is provided between the anti-drip return cover and the outer cylinder;

[0017] The drum cotton includes an integrally formed suction section and an extended return section. The lower end of the suction section is flush with the lower end of the outer cylinder and is used in conjunction with each first discharge hole; the upper end of the extended return section is connected to the lower end of the suction section and is used in conjunction with the return hole. There are several return holes, each of which is arranged in a circular array, and each of the return holes is opened on the return section.

[0018] Preferably, a hollow weight-reducing hub is provided in the outer cylinder, and the hollow weight-reducing hub includes a plurality of weight-reducing members arranged in a circular array, and a through hole penetrating the weight-reducing member is provided along the length direction of each weight-reducing member, and each adjacent two weight-reducing members are spaced apart to form a parallel section discharge channel;

[0019] The anti-drip return cover is provided with a plurality of first assembly protrusions used in conjunction with the through holes. The anti-drip return cover is inserted into the through holes through the first assembly protrusions in a one-to-one correspondence and is connected to the weight-reducing parts at the same time.

[0020] The front end of the hollow weight-reducing hub is provided with a guide connecting bracket, and the rear end of the guide connecting bracket is provided with several connecting blocks used in conjunction with each of the through holes. The front end of the guide connecting bracket is provided with several hollow protrusions used in conjunction with each of the hollow weight-reducing hubs. The hollow protrusions are integrally formed with the connecting bracket and the connecting blocks. The front end of the hollow protrusion is closed, and the rear end is hollow and penetrates the connecting bracket and the connecting block in one direction. A pin installation and removal hole for disassembling and assembling a maintenance pin is provided between the two hollow protrusions. The maintenance pin is provided on the central axis feed pipe and is located between the positioning card locking end and the guide connecting bracket; the guide connecting bracket is respectively inserted into each of the through holes and can be detachably connected to each of the weight-reducing parts through each of the connecting blocks.

[0021] Preferably, the inner wall of the guide connecting bracket is provided with a second friction portion for rotationally cooperating with the central axis feeding pipe; the protruding portion is provided with an opening, and the opening is provided with two extension portions symmetrically to each other;

[0022] The size of each weight-reducing member gradually increases from the inner end to the outer end. Both sides of the outer end of each weight-reducing member are arc-shaped, and an outward-expanding discharge channel is formed between the outer ends of each adjacent two weight-reducing members.

[0023] Preferably, the positioning card locking end includes a limiting connection surface and a guide surface, wherein the limiting connection surface is located below the C-shaped elastic positioning card and is used to limit the C-shaped elastic positioning card; the front end cover is integrally formed with the protruding portion and the positioning card locking end;

[0024] A second sealing and fastening rubber ring is provided between the front end cover and the outer cylinder, and the connection between the limiting connection surface and the guide surface is an arc transition connection;

[0025] A shield support positioning hole is provided at the outer end of the front end cover, a shield support column is provided on the inner side of the front end of the paint splash protection cover, the shield support column can be rotatably inserted into the shield support positioning hole, and an elastic clamping part is provided on the outer side of the rear end of the paint splash protection cover, and the paint splash protection cover can be detachably clamped on the central axis feeding pipe through the elastic clamping part.

[0026] Preferably, a feed regulating unit is provided at the lower end of the central axis feed pipe;

[0027] The feed regulating unit comprises a roller assembly base connected to the central axis feed pipe, wherein a first eccentric channel communicating with the central axis feed pipe is provided in the roller assembly base;

[0028] The outer wall of the lower half of the roller assembly base is threadedly connected to the inner wall of the upper half of the lower fixed screw cover, and a locking and anti-rotation rubber ring is provided between the lower fixed screw cover and the roller assembly base;

[0029] The lower half of the lower fixed screw cover is rotatably connected to the handle base, and a second eccentric channel is opened in the handle base and passes through the handle base, and the second eccentric channel is used in conjunction with the first eccentric channel;

[0030] A first hose communicating with the second eccentric channel is detachably provided at the lower end of the handle base, and an input end of the first hose is connected to an output end of the feeding device.

[0031] Preferably, an upper threaded sleeve of the upper half of the roller assembly base is provided with an upper fixed screw cap, and a fixed assembly part is provided inside the upper fixed screw cap; the fixed assembly part includes an integrally formed limiting portion and an extending portion;

[0032] The upper half of the roller assembly base is provided with a second discharge hole communicating with the first eccentric channel, the extension portion is located in the second discharge hole, and a third sealing ring is provided between the outer wall of the extension portion and the second discharge hole;

[0033] The limiting portion is located outside the second discharge hole, and the diameter of the limiting portion is larger than the diameter of the extending portion;

[0034] A circle of mounting groove is provided at the lower end of the roller assembly base, a U-shaped inner skeleton sealing ring is provided in the mounting groove, and a lubricating friction washer is provided between the handle base and the lower fixing screw cover.

[0035] Preferably, a first hose connector is provided at the lower end of the handle base;

[0036] The first hose connector includes a fixed seat, the upper half of the fixed seat is detachably connected to the handle base through a thread, the inner wall of the fixed seat is provided with a third Y-shaped sealing ring, the lower half of the fixed seat is provided with a clamping seat made of deformed material, the inner wall of the clamping seat is tilted upward, the lower end of the clamping seat is provided with a clamping seat limiting ring connected to the fixed seat, the lower end of the clamping seat limiting ring is provided with a limit seat connected to the fixed seat, the output end of the first hose is passed through the press switch, the press switch is slidably arranged in the clamping seat limiting ring and the limit seat, the upper end of the press switch has an inclined surface for use with the clamping seat, the outer wall of the middle section of the press switch is provided with a limit platform for use with the limit seat, and the lower end of the press switch is provided with a limited section.

[0037] Preferably, the lower half of the lower fixed nut is connected to the extension rod connecting seat, and a third eccentric channel is provided in the extension rod connecting seat, which runs through the extension rod connecting seat, and the third eccentric channel is communicated with the first eccentric channel, and the extension rod connecting seat is connected to the upper half of the extension rod; the lower end surface of the roller assembly base is provided with a first assembly positioning groove, and the upper end surface of the extension rod connecting seat is provided with a second assembly positioning groove, and a positioning pin is provided in the second assembly positioning groove, and the upper half of the positioning pin extends into the first assembly positioning groove; the upper end of the positioning pin is a conical structure.

[0038] A second hose is provided in the extension rod, the upper end of the second hose is connected to the lower end of the extension rod connecting seat and is communicated with the third eccentric channel, the lower end of the extension rod is detachably provided with an extension rod assembly base, a fourth eccentric channel connected to the second hose is provided in the extension rod assembly base, the lower end of the extension rod assembly base is rotatably provided with a handle base, the second eccentric channel provided in the handle base is used in conjunction with the fourth eccentric channel, and is communicated with the second hose through the fourth eccentric channel, the lower end of the second eccentric channel is communicated with the first hose, and the first hose is connected to the feeding device.

[0039] Preferably, the upper and lower ends of the second hose are detachably connected to the extension rod connecting seat and the extension rod assembly base through a second hose connector and a third hose connector respectively, and the second hose connector and the third hose connector have the same structure as the first hose connector;

[0040] The inner walls of the upper and lower ends of the extension rod are respectively connected to the outer walls of the extension rod connecting seat and the extension rod assembly base in a detachable, tight-fitting taper fit. Anti-slip resistance rubber rings are respectively provided between the inner walls of the upper and lower ends of the extension rod and the outer walls of the extension rod assembly base and the extension rod connecting seat.

[0041] The handle base is provided with a handle anti-slip rubber sleeve, the outer wall of the handle base is provided with a protrusion, the protrusion extends along the length direction of the handle base, and the inner wall of the handle anti-slip rubber sleeve is provided with a positioning groove used in conjunction with the protrusion.

[0042] The beneficial effects of the present invention are: on the one hand, the present invention effectively improves the dripping problem, and even if a small amount of paint leaks, the leaked paint can be recycled, avoiding pollution to the surrounding environment while saving costs; on the other hand, by setting a hollow weight-reducing hub, when using a large-diameter roller for painting, not only the problem of paint slipping is solved, but also the weight of the roller is effectively reduced, making it easier for operators to paint, reducing the labor intensity of operators, and effectively avoiding the problem of paint quickly piling up, resulting in uneven feeding and poor painting effect; on the other hand, during the painting process, the hands do not need to leave the feeding adjustment unit to adjust the discharge, so that it will not affect the problem of painting while painting, thereby ensuring the quality of painting; at the same time, it also has the beneficial effects of simple structure, easy disassembly and assembly, and not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0044] Figure 2 It is a structural diagram without a feed adjustment unit.

[0045] Figure 3 yes Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0046] Figure 4 yes Figure 2 Schematic diagram of the locally enlarged structure at point B in the middle.

[0047] Figure 5 It is a structural schematic diagram of the protrusion in the present invention.

[0048] Figure 6 It is a schematic diagram of the connection structure between the guide connecting bracket and the connecting block.

[0049] Figure 7 It is a schematic diagram of the connection structure of the hollow protrusion and the guide connecting bracket and other components.

[0050] Figure 8 It is a structural diagram of the coordinated use of various weight-reducing components.

[0051] Figure 9 It is a schematic diagram of the three-dimensional structure of each weight-reducing component.

[0052] Figure 10 It is a structural schematic diagram of the feed regulating unit in the present invention.

[0053] Figure 11 yes Figure 10 Schematic diagram of the partially enlarged structure at point C in the middle.

[0054] Figure 12 yes Figure 10 The partially enlarged structural diagram at point D in the middle shows that the first hose is not fully installed.

[0055] Figure 13 yes Figure 12 Schematic diagram of the structure after the first hose is fully installed.

[0056] Figure 14 This is a schematic diagram of the upper structure of the middle feed adjustment unit after adding components such as an extension rod.

[0057] Figure 15 yes Figure 14 Schematic diagram of the locally enlarged structure at point E in the middle.

[0058] Figure 16 This is a schematic diagram of the lower half of the structure of the middle feed adjustment unit after the extension rod and other components are added.

[0059] Figure 17 It is a structural schematic diagram of the front end cover provided with positioning holes in the present invention.

[0060] Figure 18 It is a schematic diagram of the structure of the paint splash protection cover. DETAILED DESCRIPTION

[0061] The present invention will be further described below with reference to the accompanying drawings and examples:

[0062] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0064] like Figures 1 to 18 As shown, a paint roller with a material return structure includes a central feed pipe 5, the upper half of which is provided with a plurality of feed pipe openings 5a. In the present invention, the diameter of each feed pipe opening 5a gradually increases from the rear end to the front end of the central feed pipe 5. This arrangement prevents paint from flowing out of the feed pipe opening 5a quickly after entering the feed pipe opening 5a, resulting in less paint in the front half of the central feed pipe 5 and uneven discharge. A maintenance latch 5b is provided at the rear end of the central feed pipe 5.

[0065] The central axis feeding tube 5 is sleeved with a positioning fixing seat 10 and a polishing sealing gasket 8, and a first sealing ring 9 is provided between the front end of the positioning fixing seat 10 and the rear end of the polishing sealing gasket 8; the polishing sealing gasket 8 is made of a hard material.

[0066] The central axis feeding pipe 5 is rotatably sleeved with an outer cylinder 100, the outer cylinder 100 is provided with a plurality of first discharge holes 101, and the outer wall of the outer cylinder 100 is sleeved with a roller cotton 102;

[0067] The central axis feeding pipe 5 is rotatably sleeved with an anti-drip return cover 103, the anti-drip return cover 103 is connected to the rear end of the outer cylinder 100, and the anti-drip return cover 103 includes a connecting section 103a, the connecting section 103a is rotatably fitted with the front end of the polishing sealing gasket 8; a return section 103b is provided on the outside of the connecting section 103a, and a return hole 2 connected to the drum cotton 102 is provided between the return section 103b and the connecting section 103a; in the present invention, due to the rotatable fitting of the rear end of the fitting section 103d with the front end of the polishing sealing gasket 8, the return hole 2 is connected to the drum cotton 102. Together, a first sealing ring 9 is provided between the front end of the positioning fixing seat 10 and the rear end of the polishing sealing gasket 8. Since the first sealing ring 9 has a micro-deformation characteristic, the micro-deformation of the first sealing ring 9 can avoid the bonding section 103d and the polishing sealing gasket 8 from not bonding properly and causing leakage, effectively improving the sealing performance and avoiding paint leakage. When the product is unqualified or the parts are worn and not replaced in time, even if there is a small amount of paint leakage, the leaked paint can flow to the roller cotton 102 through the return hole 2, effectively avoiding the problem of paint dripping everywhere causing waste and polluting the construction environment. At the same time, since the front end of the polishing sealing gasket 8 is a polished surface, the polishing sealing gasket 8 rotates more smoothly when it is bonded to the rear end of the bonding section 103d.

[0068] The front half of the central shaft feeding tube 5 is detachably sleeved with a C-shaped elastic positioning card 400, and the front end of the outer cylinder 100 is provided with a front cover 500, which is detachably connected to the front end of the outer cylinder 100. The rear end of the front cover 500 is provided with a protrusion 63, and the rear end of the protrusion 63 is provided with a limiting cavity 64;

[0069] The front half of the central axis feeding tube 5 is rotatably located in the limiting cavity 64, and the rear end of the protrusion 63 is provided with a positioning card locking end 600. The C-shaped elastic positioning card 400 is located in the limiting cavity 64 and is limited by the positioning card locking end 600.

[0070] The inner end of the connecting section 103a is provided with a fitting section 103d, and the inner end of the fitting section 103d is provided with a circle of first ridges 6 for rotating with the central axis feeding tube 5. By providing the first ridges 6 on the fitting section 103d, the contact area between the fitting section 103d and the central axis feeding tube 5 is effectively reduced, the friction is reduced, and the rotation of the anti-drip return cover 103 is smoother.

[0071] The connecting section 103a is rotatably attached to the front end of the polishing sealing gasket 8 through the rear end of the fitting section 103d. The front end of the polishing sealing gasket 8 is a polished surface. A second sealing ring 106 is provided between the anti-drip return cover 103 and the outer cylinder 100.

[0072] The drum cotton 102 includes an integrally formed suction section 102a and an extended return section 102b. The lower end of the suction section 102a is flush with the lower end of the outer cylinder 100, and is used in conjunction with each first discharge hole 101; the upper end of the extended return section 102b is connected to the lower end of the suction section 102a, and is used in conjunction with the return hole 2. There are several return holes 2, and each return hole 2 is arranged in a circular array. Each return hole 2 is opened on the return section 103b.

[0073] The outer cylinder 100 is provided with a hollow weight-reducing hub 4, which includes a plurality of weight-reducing members 4a arranged in a circular array. A through hole 4b is provided along the length direction of each weight-reducing member 4a, and a parallel discharge channel 4d is formed between each adjacent weight-reducing member 4a.

[0074] The advantage of providing through-holes 4b in the weight-reducing member 4a is that once the entire roller is filled with paint, the roller's weight increases, especially for rollers with larger diameters. The present invention reduces the overall weight of the roller by providing through-holes 4b in the weight-reducing member 4a, effectively reducing the operator's labor intensity during long hours of operation. Therefore, the present invention is suitable for rollers with larger diameters. The provision of through-holes 4b solves the problem of increased labor intensity after prolonged operation. Painting with a roller with a larger diameter is less prone to slippage, and the paint application is more effective.

[0075] The anti-drip return cover 103 is provided with a plurality of first assembly protrusions 103c used in conjunction with the through holes 4b. The anti-drip return cover 103 is inserted into the through holes 4b through the first assembly protrusions 103c one by one and is connected to the weight-reducing parts 4a at the same time.

[0076] The front end of the hollow weight-reducing hub 4 is provided with a guide connecting bracket 45, and the rear end of the guide connecting bracket 45 is provided with several connecting blocks 98 used in conjunction with each of the through holes 4b. The front end of the guide connecting bracket 45 is provided with several hollow protrusions 98a used in conjunction with each of the hollow weight-reducing hubs 4. The hollow protrusions 98a are integrally formed with the guide connecting bracket 45 and the connecting blocks 98. The front end of the hollow protrusions 98a is closed, and the rear end is hollow and penetrates the guide connecting bracket 45 and the connecting blocks 98 in one direction. A pin assembly and disassembly hole 98b for disassembling and assembling the maintenance pin 5b is provided between the two hollow protrusions 98a. The maintenance pin 5b is passed through the middle shaft feed pipe 5 and is located between the positioning card locking end 600 and the guide connecting bracket 45; the guide connecting bracket 45 is respectively inserted into each of the through holes 4b and is detachably connected to each of the weight-reducing parts 4a through each of the connecting blocks 98.

[0077] The inner wall of the guide connecting bracket 45 is provided with a second friction portion 46 for rotationally cooperating with the central shaft feeding tube 5; the protruding portion 63 is provided with an opening 63a, and the opening 63a is symmetrically provided with two extension portions 99;

[0078] Each weight-reducing member 4a gradually increases in size from its inner end to its outer end. The outer ends of each weight-reducing member 4a are both curved, and an outwardly flared discharge channel 4e is formed between the outer ends of each adjacent weight-reducing member 4a. The provision of each weight-reducing member 4a effectively prevents rapid accumulation of paint. Specifically, due to the small spacing between adjacent weight-reducing members 4a, when paint passes between two adjacent weight-reducing members 4a, not only is the flow rate of the paint reduced due to the small space, but the paint also has adhesion (the paint itself has viscosity), thereby preventing rapid accumulation of paint in one place, which could cause uneven discharge.

[0079] The positioning card locking end 600 includes a limiting connection surface 69 and a guide surface 750. The limiting connection surface 69 is located below the C-shaped elastic positioning card 400 and is used to limit the C-shaped elastic positioning card 400. The front end cover 500 is integrally formed with the protrusion 63 and the positioning card locking end 600.

[0080] A second sealing and fastening rubber ring 55 is provided between the front end cover 500 and the outer cylinder 100. The connection between the limiting connection surface 69 and the guide surface 750 is a circular arc transition connection. A shield support positioning hole 500a is provided at the outer end of the front end cover 500. A shield support column 551 is provided on the inner side of the front end of the paint splash protection cover 550. The shield support column 551 is rotatably inserted into the shield support positioning hole 500a. An elastic clamping portion 552 is provided on the outer side of the rear end of the paint splash protection cover 550. The paint splash protection cover 550 is removably clamped to the central shaft feeding tube 5 via the elastic clamping portion 552. During use, the paint splash protection cover 550 can effectively prevent paint from splashing due to the rapid rotation of the roller during painting.

[0081] The lower end of the central shaft feeding pipe 5 is provided with a feeding regulating unit 30;

[0082] The feed regulating unit 30 includes a roller assembly base 301 connected to the central axis feed pipe 5, and a first eccentric channel 302 communicating with the central axis feed pipe 5 is opened in the roller assembly base 301;

[0083] The outer wall of the lower half of the roller assembly base 301 is threadedly connected to the inner wall of the upper half of the lower fixed nut cover 303, and a locking anti-rotation rubber ring 305 is provided between the lower fixed nut cover 303 and the roller assembly base 301; in the present invention, by providing a locking anti-rotation rubber ring 305, the tight fit between the lower fixed nut cover 303 and the roller assembly base 301 is improved. When the handle base 306 is rotated, the handle base 306 is rotatably connected to the lower fixed nut cover 303 and has a certain friction. In order to prevent the lower fixed nut cover 303 from being subjected to rotational force when the handle base 306 is rotated (after rotating the handle base 306 for a long time, the lower fixed nut cover 303 will become loose), a locking anti-rotation rubber ring 305 is provided so that when the handle base 306 is rotated, the lower fixed nut cover 303 will not be loosened due to the rotation of the handle base 306.

[0084] The lower half of the lower fixing screw cap 303 is rotatably connected to the handle base 306. The handle base 306 is provided with a second eccentric channel 307 that penetrates the handle base 306. The second eccentric channel 307 is used in conjunction with the first eccentric channel 302.

[0085] A first hose 308 communicating with the second eccentric channel 307 is detachably provided at the lower end of the handle base 306 , and an input end of the first hose 308 is connected to an output end of the feeding device.

[0086] The upper half of the roller assembly base 301 is threadedly sleeved with an upper fixing screw cover 333, and a fixing assembly part 309 is arranged inside the upper fixing screw cover 333; the fixing assembly part 309 includes an integrally formed limiting portion 309a and an extension portion 309b; the upper half of the roller assembly base 301 is provided with a second discharge hole 700 connected to the first eccentric channel 302, the extension portion 309b is located in the second discharge hole 700, and a third sealing ring 701 is provided between the outer wall of the extension portion 309b and the second discharge hole 700; the limiting portion 309a is located outside the second discharge hole 700, and the diameter of the limiting portion 309a is larger than the diameter of the extension portion 309b;

[0087] A circle of mounting groove 860 is provided at the lower end of the roller assembly base 301 , a U-shaped inner skeleton sealing ring 861 is provided in the mounting groove 860 , and a lubricating friction washer 862 is provided between the handle base 306 and the lower fixing screw cover 303 .

[0088] The lower end of the handle base 306 is provided with a first hose connector 90;

[0089] The first hose connector 90 includes a fixing seat 90a, the upper half of which is detachably connected to the handle base 306 by thread, a third Y-shaped sealing ring 90b is provided on the inner wall of the fixing seat 90a, and a clamping seat 90c made of a deformable material is provided on the lower half of the fixing seat 90a. The inner wall of the clamping seat 90c is tilted upward, and the lower end of the clamping seat 90c is provided with a clamping seat limiting ring 90d connected to the fixing seat 90a. The lower end of the clamping seat limiting ring 90d is provided with a A limit seat 90e connected to the fixed seat 90a is provided, and the output end of the first hose 308 is passed through the push switch 80. The push switch 80 is slidably set in the clamping seat limit ring 90d and the limit seat 90e. The upper end of the push switch 80 has an inclined surface 80a used in conjunction with the clamping seat 90c, and the outer wall of the middle section of the push switch 80 is provided with a limit platform 80b used in conjunction with the limit seat 90e. The lower end of the push switch 80 is provided with a limit section 80c.

[0090] The lower half of the lower fixing screw cover 303 is connected to the extension rod connecting seat 310, and a third eccentric channel 706 is provided in the extension rod connecting seat 310, which passes through the extension rod connecting seat 310. The third eccentric channel 706 is communicated with the first eccentric channel 302, and the extension rod connecting seat 310 is connected to the upper half of the extension rod 311; the lower end surface of the roller assembly base 301 is provided with a first assembly positioning groove 301a, and the upper end surface of the extension rod connecting seat 310 is provided with a second assembly positioning groove 310a, and a positioning pin 310b is provided in the second assembly positioning groove 310a. The upper half of the positioning pin 310b extends into the first assembly positioning groove 301a; when it is necessary to connect the roller assembly base 301 with the extension rod connecting seat 310, the positioning pin 310b installed in the second assembly positioning groove 310a can be inserted into the second assembly positioning groove 310a, thereby ensuring that the first eccentric channel 302 is aligned and connected with the third eccentric channel 706, avoiding the blockage problem caused by the inability to align and connect the first eccentric channel 302 with the third eccentric channel 706 when connecting the roller assembly base 301 with the extension rod connecting seat 310, and at the same time speeding up the installation speed.

[0091] In the present invention, the upper end of the positioning pin 310b is a tapered structure, which makes it easier to assemble the positioning pin 310b with the first assembly positioning groove 301a.

[0092] The extension rod 311 is provided with a second hose 320. The upper end of the second hose 320 is connected to the lower end of the extension rod connecting base 310 and communicates with the third eccentric channel 706. The lower end of the extension rod 311 is detachably provided with an extension rod assembly base 312. The extension rod assembly base 312 defines a fourth eccentric channel 321 that communicates with the second hose 320. The lower end of the extension rod assembly base 312 is rotatably provided with a handle base 306. A second eccentric channel 307 defined in the handle base 306 cooperates with the fourth eccentric channel 321 and communicates with the second hose 320 through the fourth eccentric channel 321. The lower end of the second eccentric channel 307 communicates with the first hose 308, which is connected to the feeding device. This feeding device is prior art and is not the subject of the present invention. Any prior art structure that can achieve this function may be used.

[0093] The upper and lower ends of the second hose 320 are detachably connected to the extension rod connection seat 310 and the extension rod assembly base 312 via a second hose connector 800 and a third hose connector 801, respectively. The second hose connector 800 and the third hose connector 801 have the same structure as the first hose connector 90.

[0094] The inner walls of the upper and lower ends of the extension rod 311 are respectively connected to the outer walls of the extension rod connecting seat 310 and the extension rod assembly base 312 in a detachable tight-fitting taper fit, and anti-slip resistance rubber rings 900 are respectively provided between the inner walls of the upper and lower ends of the extension rod 311 and the outer walls of the extension rod assembly base 312 and the extension rod connecting seat 310; in the present invention, the friction force is improved by providing the anti-slip resistance rubber ring 900.

[0095] By providing the extension rod 311 , the wall top and walls of different heights can be painted, and the applicability is wider.

[0096] The handle base 306 is provided with a handle anti-slip rubber sleeve 901, the outer wall of the handle base 306 is provided with a protrusion, and the protrusion extends along the length direction of the handle base 306. The inner wall of the handle anti-slip rubber sleeve 901 is provided with a positioning groove used in conjunction with the protrusion.

[0097] The main application scenario of the present invention is: the wall has been painted with non-water-absorbent paint and needs to be renovated. The water absorption rate of this wall is low, which makes it easy to slip when using a roller with a smaller diameter to brush the material. Therefore, the present invention uses a large-diameter roller to solve the problem of slipping while reducing the labor intensity of the operator.

[0098] When in use, the paint flows out through the feed pipe opening 5a opened on the central axis feed pipe 5, and the outflowing paint expands outward through each discharge channel 4d, and then flows out through the first discharge hole 101 and adheres to the roller cotton 102, and then painting can begin.

[0099] Preferably, the feeding speed can be adjusted by a feeding adjustment unit arranged at the tail end of the central axis feeding tube 5. Specifically, the paint enters the first hose 308, the second eccentric channel 307 and the first eccentric channel 302 in sequence through the feeding device and then flows into the central axis feeding tube 5. When the discharge speed needs to be adjusted, the operator rotates the handle base 306. At this time, the second eccentric channel 307 rotates along with the rotation of the handle base 306. The second eccentric channel 307 is rotated to adjust the overlap between the upper end (output end) of the second eccentric channel 307 and the lower end (input end) of the first eccentric channel 302 to control the discharge speed. Through this adjustment method, when adjusting, the operator holds the roller assembly base 301 with one hand and holds the handle anti-slip rubber sleeve 901 with the other hand. Therefore, when adjustment is required during the painting process, the operator does not need to change his hand holding posture, and the problem of poor painting stability caused by holding the feeding unit with one hand to adjust the discharge speed is avoided.

[0100] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A paint roller with a recycling structure, characterized by: It comprises a central axis feed pipe (5), wherein the upper half of the central axis feed pipe (5) is provided with a plurality of feed pipe openings (5a), and the tail section of the central axis feed pipe (5) is provided with a maintenance latch (5b); The central axis feed pipe (5) is sleeved with a positioning fixing seat (10) and a polishing sealing gasket (8), and a first sealing ring (9) is provided between the front end of the positioning fixing seat (10) and the rear end of the polishing sealing gasket (8); An outer cylinder (100) is rotatably sleeved on the central axis feeding pipe (5), a plurality of first discharge holes (101) are opened on the outer cylinder (100), and a roller cotton (102) is sleeved on the outer wall of the outer cylinder (100); The central axis feed pipe (5) is rotatably sleeved with an anti-drip return cover (103), the anti-drip return cover (103) is connected to the rear end of the outer cylinder (100), and the anti-drip return cover (103) includes a connecting section (103a), the connecting section (103a) is rotatably fitted with the front end of the polishing sealing gasket (8); a return section (103b) is provided on the outside of the connecting section (103a), and a return hole (2) connected to the drum cotton (102) is provided between the return section (103b) and the connecting section (103a); The front half of the central shaft feeding tube (5) is detachably sleeved with a C-shaped elastic positioning card (400), the front end of the outer cylinder (100) is provided with a front end cover (500), the front end cover (500) is detachably connected to the front end of the outer cylinder (100), the rear end of the front end cover (500) is provided with a protrusion (63), and the rear end of the protrusion (63) is provided with a limiting cavity (64); The front half of the central axis feeding tube (5) is rotatably located in the limiting cavity (64), the rear end of the protrusion (63) is provided with a positioning card locking end (600), the C-shaped elastic positioning card (400) is located in the limiting cavity (64), and is limited by the positioning card locking end (600); the inner end of the connecting section (103a) is provided with a fitting section (103d), the inner end of the fitting section (103d) is provided with a circle of first ridges (6) for use in rotation with the central axis feeding tube (5), the connecting section (103a) is rotatably fitted together with the front end of the polishing sealing gasket (8) through the rear end of the fitting section (103d), and the front end of the polishing sealing gasket (8) is a polished surface; a second sealing ring (106) is provided between the anti-drip return cover (103) and the outer cylinder (100); The drum cotton (102) includes an integrally formed suction section (102a) and an extended return section (102b), the lower end of the suction section (102a) is flush with the lower end of the outer cylinder (100), and is used in conjunction with each of the first discharge holes (101); the upper end of the extended return section (102b) is connected to the lower end of the suction section (102a), and is used in conjunction with the return hole (2), the number of the return holes (2) is several, and each of the return holes (2) is arranged in a circular array, and each of the return holes (2) is opened on the return section (103b).

2. The paint roller with a material recycling structure according to claim 1, wherein: A hollow weight-reducing hub (4) is provided in the outer cylinder (100), and the hollow weight-reducing hub (4) includes a plurality of weight-reducing members (4a) arranged in a circular array, a through hole (4b) penetrating the weight-reducing member (4a) is provided along the length direction of each weight-reducing member (4a), and a parallel discharge channel (4d) is formed between each adjacent two weight-reducing members (4a); The anti-drip return cover (103) is provided with a plurality of first assembly protrusions (103c) for use with the through holes (4b); the anti-drip return cover (103) is inserted into the through holes (4b) through the first assembly protrusions (103c) in a one-to-one correspondence and is then connected to the weight-reducing components (4a) at the same time; The front end of the hollow weight-reducing hub (4) is provided with a guide connecting bracket (45), and the rear end of the guide connecting bracket (45) is provided with a plurality of connecting blocks (98) used in conjunction with each of the through holes (4b). The front end of the guide connecting bracket (45) is provided with a plurality of hollow protrusions (98a) used in conjunction with each of the hollow weight-reducing hubs (4). The hollow protrusions (98a) are integrally formed with the connecting bracket (45) and the connecting blocks (98). The front end of the hollow protrusions (98a) is closed, and the rear end is unidirectionally connected to the hollow hubs (4). The connecting bracket (45) and the connecting block (98) are hollow and through-set, wherein a pin installation and removal hole (98b) for disassembling and installing a maintenance pin (5b) is provided between the two hollow protrusions (98a); the maintenance pin (5b) is passed through the central axis feed pipe (5) and is located between the positioning card locking end (600) and the guide connecting bracket (45); the guide connecting bracket (45) is respectively inserted into each of the through holes (4b) through each of the connecting blocks (98) and is detachably connected to each of the weight-reducing parts (4a).

3. The paint roller with a material recycling structure according to claim 2, wherein: The inner wall of the guide connecting bracket (45) is provided with a second friction portion (46) for rotationally cooperating with the central axis feeding tube (5); the protruding portion (63) is provided with an opening (63a), and two extension portions (99) are symmetrically provided at the opening (63a); The size of each weight-reducing member (4a) gradually increases from the inner end to the outer end, both sides of the outer end of each weight-reducing member (4a) are arc-shaped, and an outward-expanding discharge channel (4e) is formed between the outer ends of each two adjacent weight-reducing members (4a).

4. The paint roller with a material recycling structure according to claim 3, wherein: The positioning card locking end (600) comprises a limiting connection surface (69) and a guide surface (750); the limiting connection surface (69) is located below the C-shaped elastic positioning card (400) and is used to limit the C-shaped elastic positioning card (400); the front end cover (500), the protruding portion (63) and the positioning card locking end (600) are integrally formed; A second sealing and fastening rubber ring (55) is provided between the front end cover (500) and the outer cylinder (100), and the connection between the limiting connection surface (69) and the guide surface (750) is an arc transition connection; A shield support positioning hole (500a) is provided at the outer end of the front end cover (500), a shield support column (551) is provided on the inner side of the front end of the paint splash protection cover (550), and the shield support column (551) is rotatably inserted into the shield support positioning hole (500a), and an elastic clamping portion (552) is provided on the outer side of the rear end of the paint splash protection cover (550), and the paint splash protection cover (550) is detachably clamped on the central shaft feeding pipe (5) through the elastic clamping portion (552).

5. The paint roller with a material recycling structure according to claim 1, wherein: A feeding regulating unit (30) is provided at the lower end of the central axis feeding pipe (5); The feed regulating unit (30) comprises a roller assembly base (301) connected to the central axis feed pipe (5), and a first eccentric channel (302) communicating with the central axis feed pipe (5) is provided in the roller assembly base (301); The outer wall of the lower half of the roller assembly base (301) is threadedly connected to the inner wall of the upper half of the lower fixed screw cover (303), and a locking anti-rotation rubber ring (305) is provided between the lower fixed screw cover (303) and the roller assembly base (301); The lower half of the lower fixed screw cover (303) is rotatably connected to the handle base (306), and a second eccentric channel (307) is provided in the handle base (306) and passes through the handle base (306). The second eccentric channel (307) is used in conjunction with the first eccentric channel (302); A first hose (308) communicating with the second eccentric channel (307) is detachably provided at the lower end of the handle base (306), and the input end of the first hose (308) is connected to the output end of the feeding device.

6. The paint roller with a material recycling structure according to claim 5, characterized in that: An upper fixing screw cover (333) is provided on the upper half of the roller assembly base (301) through a threaded sleeve, and a fixing assembly part (309) is provided inside the upper fixing screw cover (333); the fixing assembly part (309) includes an integrally formed limiting portion (309a) and an extending portion (309b); The upper half of the roller assembly base (301) is provided with a second discharge hole (700) in communication with the first eccentric channel (302); the extension portion (309b) is located in the second discharge hole (700); and a third sealing ring (701) is provided between the outer wall of the extension portion (309b) and the second discharge hole (700); The limiting portion (309a) is located outside the second discharge hole (700), and the diameter of the limiting portion (309a) is larger than the diameter of the extending portion (309b); A circle of mounting grooves (860) is provided at the lower end of the roller assembly base (301), a U-shaped inner skeleton sealing ring (861) is provided in the mounting groove (860), and a lubricating friction washer (862) is provided between the handle base (306) and the lower fixed screw cover (303).

7. The paint roller with a material recycling structure according to claim 6, characterized in that: A first hose connector (90) is provided at the lower end of the handle base (306); The first hose connector (90) includes a fixed seat (90a), the upper half of the fixed seat (90a) is detachably connected to the handle base (306) by thread, the inner wall of the fixed seat (90a) is provided with a third Y-shaped sealing ring (90b), the lower half of the fixed seat (90a) is provided with a clamping seat (90c) made of a deformable material, the inner wall of the clamping seat (90c) is tilted upward, the lower end of the clamping seat (90c) is provided with a clamping seat limiting ring (90d) connected to the fixed seat (90a), and the lower end of the clamping seat limiting ring (90d) is provided with A limit seat (90e) is connected to the fixed seat (90a), the output end of the first hose (308) is inserted into the push switch (80), the push switch (80) is slidably arranged in the clamping seat limit ring (90d) and the limit seat (90e), the upper end of the push switch (80) has an inclined surface (80a) used in conjunction with the clamping seat (90c), the outer wall of the middle section of the push switch (80) is provided with a limit platform (80b) used in conjunction with the limit seat (90e), and the lower end of the push switch (80) is provided with a limit section (80c).

8. The paint roller with a material recycling structure according to claim 7, characterized in that: The lower half of the lower fixed screw cover (303) is connected to the extension rod connecting seat (310), and a third eccentric channel (706) is provided in the extension rod connecting seat (310) and passes through the extension rod connecting seat (310), and the third eccentric channel (706) is communicated with the first eccentric channel (302), and the extension rod connecting seat (310) is connected to the upper half of the extension rod (311); the lower end surface of the roller assembly base (301) is provided with a first assembly positioning groove (301a), and the upper end surface of the extension rod connecting seat (310) is provided with a second assembly positioning groove (310a), and a positioning pin (310b) is provided in the second assembly positioning groove (310a), and the upper half of the positioning pin (310b) extends into the first assembly positioning groove (301a), and the upper end of the positioning pin (310b) is a conical structure; A second hose (320) is provided in the extension rod (311), the upper end of the second hose (320) is connected to the lower end of the extension rod connecting seat (310) and is communicated with the third eccentric channel (706), the lower end of the extension rod (311) is detachably provided with an extension rod assembly base (312), a fourth eccentric channel (321) connected to the second hose (320) is provided in the extension rod assembly base (312), the lower end of the extension rod assembly base (312) is rotatably provided with a handle base (306), the second eccentric channel (307) provided in the handle base (306) is used in conjunction with the fourth eccentric channel (321), and is communicated with the second hose (320) through the fourth eccentric channel (321), the lower end of the second eccentric channel (307) is communicated with the first hose (308), and the first hose (308) is connected to the feeding device.

9. The paint roller with a material recycling structure according to claim 8, characterized in that: The upper and lower ends of the second hose (320) are detachably connected to the extension rod connection seat (310) and the extension rod assembly base (312) via a second hose connector (800) and a third hose connector (801), respectively. The second hose connector (800) and the third hose connector (801) have the same structure as the first hose connector (90). The inner walls of the upper and lower ends of the extension rod (311) are respectively connected to the outer walls of the extension rod connecting seat (310) and the extension rod assembly base (312) in a detachable, tight-fitting taper fit. Anti-slip resistance rubber rings (900) are respectively provided between the inner walls of the upper and lower ends of the extension rod (311) and the outer walls of the extension rod assembly base (312) and the extension rod connecting seat (310). The handle base (306) is provided with a handle anti-slip rubber sleeve (901), the outer wall of the handle base (306) is provided with a protrusion, and the protrusion extends along the length direction of the handle base (306), and the inner wall of the handle anti-slip rubber sleeve (901) is provided with a positioning groove used in conjunction with the protrusion.

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