A uniform phenolphthalein applicator

Abstract

The utility model discloses a phenolphthalein spraying pen of uniform smearing relates to spraying pen technical field, including spraying pen and the spray tank of connecting in the top of spraying pen, the top fixed mounting of spray tank has the spray tank top cover, the bottom rotation of spray tank top cover installs first stirring shaft, the outside fixed connection of first stirring shaft has spiral blade, the inside of spray tank top cover is equipped with first installation cavity, the inner wall bottom of first installation cavity rotates and installs driving gear, the utility model discloses before the next use, one hand holds the spray tank, and the other hand holds the handle and drives connecting rod rotation, and connecting rod rotates and drives driving gear rotation, and the driving gear one side meshing connection's driven gear is driven by driving gear, and rotates in the inside of first installation cavity simultaneously, and first stirring shaft and spiral blade, second stirring shaft and stirring blade all produce rotation, and the phenolphthalein solution in the spray tank is fully stirred, so that the solution can be even sprayed.

Description

Technical Field

[0001] This utility model relates to the field of spray paint technology, specifically a phenolphthalein spray paint pen for uniform application. Background Technology

[0002] Pour phenolphthalein into a plastic cup, add alcohol to dilute it, and stir with a stirring rod to dissolve it, thus making a phenolphthalein solution. Phenolphthalein itself is colorless. When writing or drawing with a pen dipped in phenolphthalein solution, the writing or drawing will leave almost no trace after drying. However, when sprayed with an alkaline solution, phenolphthalein will turn red upon contact with the alkali, thus making the previously invisible writing or drawing appear.

[0003] The traditional method of phenolphthalein spraying involves mixing phenolphthalein with a certain concentration of alcohol, stirring thoroughly, and then spraying. However, if the stirring time is insufficient or a large amount of phenolphthalein powder is added at once, forming clumps, the phenolphthalein inside the clumps cannot fully contact and dissolve with the alcohol in time. As the solution stands, these undissolved phenolphthalein particles will settle to the bottom, forming a precipitate that clogs the nozzle and affects the spraying process.

[0004] To address this issue, we designed a phenolphthalein spray pen that allows for even application of phenolphthalein. Utility Model Content

[0005] The purpose of this invention is to provide a phenolphthalein spray pen that can evenly spread phenolphthalein, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a phenolphthalein spray pen for uniform application, including a spray pen and a spray can connected to the top of the spray pen. A spray can top cover is fixedly installed on the top of the spray can, and a valve plate is provided at the lower end of the spray can. A first stirring shaft is rotatably installed at the bottom of the spray can top cover, and a spiral blade is fixedly connected to the outer side of the first stirring shaft. A first mounting cavity is opened inside the spray can top cover, and a driving gear is rotatably installed at the bottom of the inner wall of the first mounting cavity. The driving gear is fixedly connected to the first stirring shaft through a rotating shaft. A driven gear is meshed with one side of the driving gear. A second stirring shaft is rotatably connected to the bottom of the spray can top cover, and the driven gear is fixedly connected to the second stirring shaft through a rotating shaft.

[0007] Furthermore, a snap-fit ​​plate is fixedly connected to one side of the spray can top cover, and an installation block is fixedly connected to one side of the spray can. An installation groove is provided inside the installation block, and a telescopic spring is fixedly installed on one side of the inner wall of the installation groove. A limit block is fixedly connected to the other end of the telescopic spring. The limit block is slidably disposed inside the installation groove. A snap-fit ​​block is fixedly connected to the side of the limit block away from the telescopic spring, and the snap-fit ​​block snaps into the snap-fit ​​plate.

[0008] Furthermore, a connecting rod is rotatably mounted on the top of the spray can cover. The connecting rod is fixedly connected to the drive gear via a rotating shaft, and a handle is fixedly mounted on the end of the connecting rod away from the drive gear.

[0009] Furthermore, there are two driven gears, which are stacked on both sides of the inner wall of the first mounting cavity with the vertical axis of the driving gear as the center.

[0010] Furthermore, a stirring blade is fixedly installed on one side of the second stirring shaft, and the number of the second stirring shafts matches the number of driven gears.

[0011] Furthermore, a nozzle is fixedly connected to one side of the spray gun.

[0012] Furthermore, the snap-fit ​​block is trapezoidal in shape and is slidably connected to the mounting block.

[0013] Furthermore, the snap-fit ​​plate has a snap-fit ​​groove inside, and the snap-fit ​​block is inserted into the snap-fit ​​groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. When the spray pen has been stored for a period of time, you can hold the spray can with one hand and the handle with the other hand to rotate the connecting rod before the next use. When the connecting rod rotates, it drives the drive gear to rotate. The driven gear, which is meshed with the drive gear on one side, is driven by the drive gear and rotates synchronously inside the first mounting cavity. The first stirring shaft and the spiral blade, as well as the second stirring shaft and the stirring blade, all rotate to fully stir the phenolphthalein solution in the spray can so that the solution can be sprayed evenly. 2. When it is necessary to refill the phenolphthalein solution, the user can use their finger to push the snap-fit ​​block inside the snap-fit ​​groove toward the side closest to the mounting block. After the snap-fit ​​block disengages from the snap-fit ​​groove, the spray can top cover can be removed from the top of the spray can to fill in the phenolphthalein solution. After filling, align the spray can and the spray can top cover, and move the snap-fit ​​plate vertically downward from above the mounting block. The snap-fit ​​block is pressed against by the snap-fit ​​plate, compressing the telescopic spring. When the snap-fit ​​plate and the mounting block are aligned, the snap-fit ​​block resets and extends into the snap-fit ​​groove to fix the spray can top cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of the spray can top cover and spray can of this utility model; Figure 3 This is a schematic diagram of the internal structure of the first mounting cavity of this utility model; Figure 4 This is a schematic diagram showing a half-section view of the internal structure of the mounting block of this utility model; Figure 5for Figure 3 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Airbrush; 2. Spray can; 3. Nozzle; 4. Spray can top cover; 5. Connecting rod; 6. Handle; 7. First stirring shaft; 8. Second stirring shaft; 9. Snap-fit ​​plate; 10. Mounting block; 11. First mounting cavity; 12. Drive gear; 13. Driven gear; 14. Stirring blade; 15. Spiral blade; 16. Mounting groove; 17. Telescopic spring; 18. Limiting block; 19. Snap-fit ​​block; 20. Snap-fit ​​groove; 21. Valve plate. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-5 This utility model provides a technical solution: it includes an airbrush 1 and a spray can 2 connected to the top of the airbrush 1. A spray can top cover 4 is fixedly installed on the top of the spray can 2. The lower end of the spray can 2 has a valve plate 21 (a sliding groove is opened at the corresponding position of the spray can 2 and the valve plate 21, and the valve plate 21 is slidably connected to the sliding groove); a first stirring shaft 7 is rotatably installed at the bottom of the spray can top cover 4, and a spiral blade 15 is fixedly connected to the outer side of the first stirring shaft 7. A first mounting cavity 11 is opened inside the spray can top cover 4, and a drive gear 12 is rotatably installed at the bottom of the inner wall of the first mounting cavity 11. The drive gear 12 is connected to the spray can top cover 4 via a rotating shaft. The first stirring shaft 7 is fixedly connected. The driven gear 13 is meshed with one side of the driving gear 12. The bottom of the spray can top cover 4 is rotatably connected to the second stirring shaft 8. The driven gear 13 is fixedly connected to the second stirring shaft 8 through a rotating shaft. The top of the spray can top cover 4 is rotatably mounted with a connecting rod 5. The connecting rod 5 is fixedly connected to the driving gear 12 through a rotating shaft. A handle 6 is fixedly mounted on the end of the connecting rod 5 away from the driving gear 12. There are two driven gears 13. The two driven gears 13 are stacked on both sides of the inner wall of the first mounting cavity 11 with the vertical axis of the driving gear 12 as the center.

[0019] It should be noted that the drive gear 12 is fixedly installed at the center of the inside of the spray can top cover 4, the handle 6 is fixedly connected to the top of one end of the connecting rod 5, and the bottom of the other end of the connecting rod 5 is fixedly connected to the first stirring shaft 7 via a rotating shaft. The opening degree of the lower end of the spray can 2 is adjusted by the valve plate 21.

[0020] In practice, the user pours phenolphthalein solution into the spray can 2, then snaps the top cover 4 of the spray can onto the spray can 2. The phenolphthalein solution is then sprayed using the spray gun 1 and the nozzle 3. After the spray gun has been idle for a period of time, to prevent the phenolphthalein solution in the spray can 2 from settling, the user can hold the spray can 2 with one hand and the handle 6 with the other hand before the next use. The handle 6 drives the connecting rod 5 to rotate on top of the top cover 4 of the spray can. When the connecting rod 5 rotates, it drives the drive gear 12 to rotate. The drive gear 12 drives the first stirring shaft 7 and the spiral blade 15 to rotate inside the spray can 2. When the drive gear 12 rotates, the driven gear 13, which is meshed with the drive gear 12, is driven by the drive gear 12 and rotates synchronously inside the first mounting cavity 11. When the driven gear 13 rotates, it drives the second stirring shaft 8 and the stirring blade 14 to rotate synchronously, thus fully stirring the phenolphthalein solution in the spray can 2.

[0021] See Figure 3 , Figure 4 and Figure 5 A snap-fit ​​plate 9 is fixedly connected to one side of the spray can top cover 4, and an installation block 10 is fixedly connected to one side of the spray can 2. An installation groove 16 is opened inside the installation block 10. A telescopic spring 17 is fixedly installed on one side of the inner wall of the installation groove 16. A limit block 18 is fixedly connected to the other end of the telescopic spring 17. The limit block 18 is slidably disposed inside the installation groove 16. A snap-fit ​​block 19 is fixedly connected to the side of the limit block 18 away from the telescopic spring 17. The snap-fit ​​block 19 snaps with the snap-fit ​​plate 9. The snap-fit ​​block 19 is trapezoidal in shape. The snap-fit ​​block 19 is slidably connected to the installation block 10. A snap-fit ​​groove 20 is opened inside the snap-fit ​​plate 9. The snap-fit ​​block 19 is inserted into the snap-fit ​​groove 20.

[0022] In practice, when it is necessary to refill the phenolphthalein solution, the user can use their finger to poke the snap-fit ​​block 19 inside the snap-fit ​​groove 20 toward the side close to the mounting block 10. After the snap-fit ​​block 19 is disengaged from the snap-fit ​​groove 20, the spray can top cover 4 can be removed from the top of the spray can 2 and the phenolphthalein solution can be filled. After filling, the spray can 2 and the spray can top cover 4 are aligned, and the snap-fit ​​plate 9 moves vertically downward from above the mounting block 10. The snap-fit ​​block 19 is trapezoidal in shape. The inclined end of the snap-fit ​​block 19 first contacts the bottom of the snap-fit ​​plate 9. The snap-fit ​​block 19 is pressed by the snap-fit ​​plate 9, which compresses the telescopic spring 17. After the snap-fit ​​plate 9 and the mounting block 10 are aligned, the snap-fit ​​block 19 resets and extends into the snap-fit ​​groove 20 to fix the spray can top cover 4.

[0023] See Figure 3 A stirring blade 14 is fixedly installed on one side of the second stirring shaft 8, and the number of the second stirring shafts 8 matches the number of driven gears 13.

[0024] By setting two second stirring shafts 8, each equipped with equally spaced stirring blades 14, the phenolphthalein solution can be stirred.

[0025] See Figure 1 The spray nozzle 3 is fixedly connected to one side of the spray pen 1.

[0026] The method of placing phenolphthalein solution inside spray can 2, then holding spray brush 1 and spraying the phenolphthalein solution evenly through nozzle 3, and spraying through spray brush 1 to spray nozzle 3 is existing technology, so it will not be described in detail here.

[0027] Working principle: When using the device, the user pours phenolphthalein solution into the spray can 2, and then snaps the top cover 4 of the spray can onto the spray can 2. The phenolphthalein solution is then sprayed using the spray pen 1 and the nozzle 3. After the spray pen has been idle for a period of time, to prevent the phenolphthalein solution in the spray can 2 from settling, the user can hold the spray can 2 with one hand and the handle 6 with the other hand before the next use. The handle 6 drives the connecting rod 5 to rotate on the top of the spray can 4. When the connecting rod 5 rotates, it drives the drive gear 12 to rotate. The drive gear 12 drives the first stirring shaft 7 and the spiral blade 15 to rotate inside the spray can 2. When the drive gear 12 rotates, the driven gear 13, which is meshed with the drive gear 12, is driven by the drive gear 12 and rotates synchronously inside the first mounting cavity 11. When the driven gear 13 rotates, it drives the second stirring shaft 8 and the stirring blade 14 to rotate synchronously, which fully stirs the phenolphthalein solution in the spray can 2 (of course, during the stirring process, the lower outlet of the spray can 2 is closed by the valve plate 21).

[0028] When it is necessary to refill the phenolphthalein solution, the user can use their finger to push the snap block 19 inside the snap slot 20 toward the side closer to the mounting block 10. After the snap block 19 is disengaged from the snap slot 20, the spray can top cover 4 can be removed from the top of the spray can 2 and the phenolphthalein solution can be filled. After filling, align the spray can 2 and the spray can top cover 4 so that the snap plate 9 moves vertically downward from above the mounting block 10. The snap block 19 is pressed by the snap plate 9, which compresses the telescopic spring 17. When the snap plate 9 and the mounting block 10 are aligned, the snap block 19 returns to its original position and extends into the snap slot 20 to fix the spray can top cover 4.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A phenolphthalein spray pen for uniform application, comprising a spray pen (1) and a spray can (2) connected to the top of the spray pen (1), characterized in that: The top of the spray can (2) is fixedly installed with a spray can top cover (4), and the lower end of the spray can (2) is equipped with a valve plate (21); the bottom of the spray can top cover (4) is rotatably installed with a first stirring shaft (7), and a spiral blade (15) is fixedly connected to the outside of the first stirring shaft (7). The inside of the spray can top cover (4) is provided with a first mounting cavity (11), and a drive gear (12) is rotatably installed on the bottom of the inner wall of the first mounting cavity (11). The drive gear (12) is fixedly connected to the first stirring shaft (7) through a rotating shaft. A driven gear (13) is meshed with one side of the drive gear (12). The bottom of the spray can top cover (4) is rotatably connected with a second stirring shaft (8), and the driven gear (13) is fixedly connected to the second stirring shaft (8) through a rotating shaft.

2. The phenolphthalein spray pen for uniform application as described in claim 1, characterized in that: A snap-fit ​​plate (9) is fixedly connected to one side of the spray can top cover (4), and an installation block (10) is fixedly connected to one side of the spray can (2). An installation groove (16) is provided inside the installation block (10). A telescopic spring (17) is fixedly installed on one side of the inner wall of the installation groove (16). A limit block (18) is fixedly connected to the other end of the telescopic spring (17). The limit block (18) is slidably disposed inside the installation groove (16). A snap-fit ​​block (19) is fixedly connected to the side of the limit block (18) away from the telescopic spring (17). The snap-fit ​​block (19) is snapped into the snap-fit ​​plate (9).

3. The phenolphthalein spray pen for uniform application as described in claim 2, characterized in that: A connecting rod (5) is rotatably mounted on the top of the spray can cover (4). The connecting rod (5) is fixedly connected to the drive gear (12) via a rotating shaft. A handle (6) is fixedly mounted on the end of the connecting rod (5) away from the drive gear (12).

4. The phenolphthalein spray pen for uniform application as described in claim 3, characterized in that: The number of driven gears (13) is set to two, and the two driven gears (13) are stacked on both sides of the inner wall of the first mounting cavity (11) with the vertical axis of the driving gear (12) as the center.

5. The phenolphthalein spray pen for uniform application as described in claim 4, characterized in that: A stirring blade (14) is fixedly installed on one side of the second stirring shaft (8), and the number of the second stirring shaft (8) matches the number of driven gears (13).

6. The phenolphthalein spray pen for uniform application as described in claim 5, characterized in that: The nozzle (3) is fixedly connected to one side of the spray gun (1).

7. The phenolphthalein spray pen for uniform application as described in claim 6, characterized in that: The snap-fit ​​block (19) is trapezoidal in shape and is slidably connected to the mounting block (10).

8. The phenolphthalein spray pen for uniform application as described in claim 7, characterized in that: The snap-fit ​​plate (9) has a snap-fit ​​groove (20) inside, and the snap-fit ​​block (19) is inserted into the snap-fit ​​groove (20).

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