Spray gun for spraying waterproof paint

Abstract

The utility model relates to the technical field of spray guns, and discloses a spray gun for spraying waterproof paint, which comprises a mounting bin and a storage tank, the mounting bin comprises a main bin body, a spray gun grab handle and a T-shaped spray head, and a T-shaped cavity is correspondingly formed in the T-shaped spray head; the upper end of a vertically-arranged suction pipe is connected to an opening in the lower side of the T-shaped spray head, a semi-annular guide plate is further fixed to the outer side face of the lower end of the T-shaped spray head, external threads are arranged on the peripheral face of an upper port of the storage tank, and a circle of annular protrusion horizontally extending outwards is further arranged on the peripheral face of the position, on the lower side of the external threads, of the port of the storage tank. And after the upper end opening of the storage tank is inserted into the T-shaped cavity from bottom to top and is in adaptive threaded connection with the T-shaped cavity, the upper surface of the annular bulge at the end opening of the storage tank is tightly attached to the annular horizontal inner wall surface of the semi-annular guide plate. The problem that the spray gun and the storage tank are not easy to align and install is solved, and the convenience of assembling the spray gun and the storage tank is improved.

Description

A spray gun for applying waterproof coating Technical Field

[0001] This utility model relates to the field of spray gun technology, and more specifically, to a spray gun for spraying waterproof coatings. Background Technology

[0002] Waterproof coatings are coatings that can prevent water penetration and are widely used in construction, decoration and other fields that require waterproof protection. Waterproof coatings are materials that are applied to the surface of buildings and form a waterproof film through chemical reaction or physical drying.

[0003] Nowadays, people usually use spray guns to apply waterproof coatings. When using a spray gun to apply waterproof coating, you generally need to first pour the coating into the container of the spray gun, then hold the spray gun with one hand and use the other hand to insert one end of the container into the threaded hole on the surface of the spray gun. However, because only one hand is used to install the container, it is easy to misalign it and fail to install it.

[0004] Therefore, under the current circumstances, a new and improved spray gun for applying waterproof coatings is needed to solve the problem of the spray gun and the container being difficult to align and install, and to improve the ease of assembly of the spray gun and the container. Summary of the Invention

[0005] In view of this, the present invention proposes a spray gun for spraying waterproof coatings, the specific technical solution of which is as follows:

[0006] A spray gun for applying waterproof coating includes an installation chamber and a storage tank. The installation chamber further includes a main chamber body with an air supply unit installed inside, a spray gun handle connected to the lower rear side of the main chamber body, and a T-shaped nozzle connected to the front end of the main chamber body. The T-shaped nozzle has a corresponding T-shaped cavity inside, and the air supply unit can introduce airflow into the T-shaped cavity. The upper end of a vertically arranged suction tube is connected to the lower opening of the T-shaped nozzle. A semi-annular guide plate is fixed on the lower outer surface of the T-shaped nozzle. The upper port of the storage tank has an external thread on its outer circumferential surface, and a ring of horizontally extending annular protrusion is provided on the outer circumferential surface of the storage tank port below the external thread. The inner wall of the T-shaped cavity has an internal thread. After the upper port of the storage tank is inserted into the T-shaped cavity from bottom to top and connected to the T-shaped cavity by a threaded fit, the upper surface of the annular protrusion at the storage tank port is in close contact with the annular horizontal inner wall surface of the semi-annular guide plate.

[0007] Preferably, the air supply unit includes an air pump fixedly installed in the main chamber, the rear air inlet of the air pump extending rearward beyond the main chamber, and the front air outlet of the air pump communicating with the T-shaped cavity; a control button electrically connected to the air pump is installed on the inner finger grip surface of the spray gun handle.

[0008] Preferably, the front outlet of the air pump is connected to the T-shaped cavity through a connecting unit. The connecting unit includes an externally threaded pipe fixedly inserted into the rear port of the T-shaped nozzle. An internally threaded pipe is threaded onto the outer surface of the externally threaded pipe. A rotating ring is rotatably sleeved at the rear end of the internally threaded pipe. A bellows is fixedly installed at the rear end of the rotating ring. The rear end of the bellows is fixed and connected to the front outlet of the air pump. The airflow ejected by the air pump flows into the T-shaped cavity through the bellows, the internally threaded pipe, and the externally threaded pipe.

[0009] Preferably, the front end of the main chamber is connected to the T-shaped nozzle via an installation unit, the installation unit including several installation bolts, and the corresponding end surfaces of the main chamber and the T-shaped nozzle are provided with installation edges with threaded holes; during installation, the two installation edges are fitted together, and the installation bolts are screwed into the corresponding threaded holes on the two installation edges.

[0010] Preferably, magnetic absorbing sheets are fixedly installed on the upper surface of the annular protrusion at the port of the storage tank and on the annular horizontal inner wall of the semi-annular guide plate.

[0011] Preferably, the lower end of the straw can extend into the inner cavity of the storage container near the bottom of the container.

[0012] Compared with existing technologies, the spray gun for applying waterproof coatings according to this utility model has the following advantages:

[0013] 1. In this utility model, a T-shaped cavity is set inside the installation chamber. During use, the user adds waterproof coating to the storage tank, then aligns the upper port of the storage tank with the annular guide plate and quickly inserts it. This process is easy to observe and perform alignment. Furthermore, after the upper port of the storage tank is inserted into the T-shaped cavity from bottom to top and connected with the threaded connection, the upper surface of the annular protrusion at the storage tank port will also be in close contact with the annular horizontal inner wall of the semi-annular guide plate, further ensuring the accuracy of the storage tank insertion into the T-shaped cavity and the stability during rotation. This device, by adding a semi-annular guide plate to the lower outer surface of the T-shaped nozzle, achieves the guiding function of the storage tank during installation, thus enabling precise and rapid installation of the storage tank.

[0014] 2. This utility model solves the problem of difficulty in aligning and installing the spray gun and storage tank, and improves the ease of assembling the spray gun and storage tank.

[0015] 3. In this utility model, by fixing magnetic absorbing plates on the corresponding surfaces of the semi-circular guide plate and the annular protrusion, the two magnetic absorbing plates can attract each other after the user passes the storage can through the semi-circular guide plate and screws it into the inner wall of the T-shaped cavity, further increasing the stability of the connection between the storage can and the T-shaped cavity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 is a three-dimensional structural diagram of a spray gun for spraying waterproof coating according to the present invention.

[0018] Figure 2 is a three-dimensional structural diagram of a spray gun for spraying waterproof coating according to this utility model from another angle.

[0019] Figure 3 is a partial schematic diagram of a half-sectional view of the spray gun of this utility model.

[0020] Figure 4 is another schematic diagram of a half-sectional view of the spray gun of this utility model.

[0021] In the diagram: 1. Installation chamber; 2. Storage tank; 3. Main chamber body; 4. Spray gun handle; 5. T-shaped nozzle; 6. T-shaped cavity; 7. Air supply unit; 8. Suction pipe; 9. Semi-circular guide plate; 10. Circular protrusion; 11. Rear air inlet; 12. Air pump; 13. Control button; 14. Connecting unit; 15. External threaded pipe; 16. Internal threaded pipe; 17. Rotating ring; 18. Corrugated pipe; 19. Installation unit; 20. Installation bolt; 21. Installation edge; 22. Magnetic suction plate. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Example:

[0026] This embodiment provides a spray gun for spraying waterproof coatings, mainly to solve the problem that when using a spray gun to spray waterproof coatings, it is generally necessary to pour the coating into the container of the spray gun, then hold the spray gun with one hand and insert one end of the container into the inner wall of the threaded hole on the surface of the spray gun with the other hand and rotate the container. In this process, because only one hand is used to install the container, misalignment and installation failure are easy to occur. The following technical solution is provided, which will be explained in detail with reference to Figures 1-4:

[0027] A spray gun for applying waterproof coating includes an installation chamber 1 and a storage tank 2. The installation chamber 1 further includes a main chamber body 3 with an air supply unit 7 installed inside, a spray gun handle 4 connected to the lower rear side of the main chamber body, and a T-shaped nozzle 5 connected to the front end of the main chamber body. The T-shaped nozzle 5 has a corresponding T-shaped cavity 6 inside, and the air supply unit 7 can introduce airflow into the T-shaped cavity 6. The upper end of a vertically arranged suction pipe 8 is connected to the lower opening of the T-shaped nozzle 5, and the lower outer side of the T-shaped nozzle 5... A semi-circular guide plate 9 is fixed on the surface. The upper port of the storage tank 2 is provided with an external thread on its outer circumferential surface, and a ring of outwardly horizontally extending annular protrusion 10 is provided on the outer circumferential surface of the storage tank port below the external thread. The inner wall of the T-shaped cavity 6 is provided with an internal thread. After the upper port of the storage tank 2 is inserted into the T-shaped cavity 6 from bottom to top and is connected to the T-shaped cavity 6 with a matching thread, the upper surface of the annular protrusion 10 at the storage tank port is in close contact with the annular horizontal inner wall surface of the semi-circular guide plate 9.

[0028] In use, after adding waterproof coating to the inside of storage tank 2, the user inserts the upper port of storage tank 2 into the inner wall of T-shaped cavity 6 and makes a threaded connection. Then, airflow is introduced into T-shaped cavity 6 through air supply unit 7. According to Bernoulli's principle, the higher the airflow speed, the lower the pressure. Therefore, the waterproof coating inside storage tank 2 is sucked into T-shaped cavity 6 by suction tube 8 fixedly inserted into the inner wall of the lower opening of T-shaped nozzle, and then discharged to the outside from the front end of T-shaped cavity 6, thus achieving the purpose of spraying.

[0029] This device features a semi-annular guide plate 9 on the lower outer surface of the T-shaped nozzle 5, allowing the user to align the upper port of the storage tank 2 with the annular guide plate and insert it quickly. This process is easy to observe and perform alignment. Furthermore, when the upper port of the storage tank 2 is inserted into the T-shaped cavity 6 from bottom to top and connected to the T-shaped cavity 6 by a threaded fit, the upper surface of the annular protrusion 10 at the port of the storage tank will also be in close contact with the annular horizontal inner wall of the semi-annular guide plate 9, further ensuring the accuracy of the storage tank 2 when inserted into the T-shaped cavity 6 and the stability during rotation.

[0030] This device, by adding a semi-circular guide plate 9, achieves the guiding function of the storage tank 2 during installation, that is, it can achieve precise and rapid installation of the storage tank 2.

[0031] In a further specific embodiment, the air supply unit 7 includes an air pump 12 fixedly installed in the main chamber 3. The rear air inlet end 11 of the air pump 12 extends out of the main chamber 3, and the front air outlet end of the air pump 12 is connected to the T-shaped cavity 6. A control button 13 electrically connected to the air pump 12 is installed on the inner finger grip surface of the spray gun handle 4.

[0032] When in use, the user only needs to press the control button 13 on the finger grip surface inside the spray gun handle to control the air output from the front air outlet of the air pump 12.

[0033] Furthermore, the front outlet of the air pump 12 is connected to the T-shaped cavity 6 through the connecting unit 14, as shown in Figure 3. The connecting unit 14 includes an externally threaded pipe 15 fixedly inserted into the rear port of the T-shaped nozzle. An internally threaded pipe 16 is threaded onto the outer surface of the externally threaded pipe 15. A rotating ring 17 is rotatably sleeved at the rear end of the internally threaded pipe 16. A bellows 18 is fixedly installed at the rear end of the rotating ring 17. The rear end of the bellows 18 is fixed and connected to the front outlet of the air pump 12. The airflow ejected by the air pump 12 flows into the T-shaped cavity 6 through the bellows 18, the internally threaded pipe 16, and the externally threaded pipe 15.

[0034] In this embodiment, the front end of the main chamber 3 is connected to the T-shaped nozzle 5 through the mounting unit 19, as shown in Figure 2. The mounting unit 19 includes several mounting bolts 20. The corresponding end surfaces of the main chamber 3 and the T-shaped nozzle 5 are provided with mounting edges 21 with threaded holes. During installation, the two mounting edges 21 are fitted together, and the mounting bolts 20 are screwed into the corresponding threaded holes on the two mounting edges 21, thereby realizing the connection of the T-shaped nozzle 5 at the front end of the main chamber.

[0035] In a further specific embodiment, magnetic absorbing pieces 22 are fixedly installed on the upper surface of the annular protrusion 10 at the port of the storage tank and on the annular horizontal inner wall of the semi-annular guide plate 9.

[0036] By fixing magnetic absorbing pieces 22 on the corresponding surfaces of the semi-annular guide plate 9 and the annular protrusion 10, the two magnetic absorbing pieces 22 can attract each other after the user passes the storage can 2 through the semi-annular guide plate 9 and screws it into the inner wall of the T-shaped cavity 6, further increasing the stability of the connection between the storage can 2 and the T-shaped cavity 6.

[0037] In this embodiment, as shown in FIG4, the lower end of the straw 8 can extend into the inner cavity of the storage tank 2 near the bottom of the tank.

[0038] The working process of this utility model is as follows:

[0039] First, the user needs to add waterproof coating to the inside of the storage tank 2, align the upper port of the storage tank 2 with the semi-annular guide plate 9 and insert it, and then rotate the storage tank 2 so that its upper port thread is screwed into the inner wall of the T-shaped cavity 6, thus achieving accurate installation of the storage tank 2.

[0040] Secondly, the user needs to press the control button 13 to control the air pump 12 to create airflow inside the T-shaped cavity 6, so that the waterproof coating inside the storage tank 2 enters the T-shaped cavity 6 through the suction tube 8 and is finally sprayed out from the front end of the T-shaped cavity 6.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spray gun for applying waterproof coating, characterized in that, The device includes an installation chamber and a storage tank. The installation chamber further includes a main chamber body with an air supply unit installed inside, a spray gun handle connected to the lower rear side of the main chamber body, and a T-shaped nozzle connected to the front end of the main chamber body. The T-shaped nozzle has a corresponding T-shaped cavity inside, and the air supply unit can introduce airflow into the T-shaped cavity. The upper end of a vertically arranged suction tube is connected to the lower opening of the T-shaped nozzle. A semi-annular guide plate is also fixed on the lower outer surface of the T-shaped nozzle. The upper port of the storage tank has an external thread on its outer circumferential surface, and a ring of horizontally extending annular protrusion is also provided on the outer circumferential surface of the storage tank port below the external thread. The inner wall of the T-shaped cavity has an internal thread. After the upper port of the storage tank is inserted into the T-shaped cavity from bottom to top and connected to the T-shaped cavity with a matching thread, the upper surface of the annular protrusion at the storage tank port is in close contact with the annular horizontal inner wall surface of the semi-annular guide plate.

2. The spray gun for applying waterproof coating according to claim 1, characterized in that, The air supply unit includes an air pump fixedly installed inside the main chamber. The rear air inlet of the air pump extends out of the main chamber, and the front air outlet of the air pump is connected to the T-shaped cavity. A control button electrically connected to the air pump is installed on the inner finger grip surface of the spray gun handle.

3. The spray gun for applying waterproof coating according to claim 2, characterized in that, The front outlet of the air pump is connected to the T-shaped cavity through a connecting unit. The connecting unit includes an externally threaded pipe fixedly inserted into the rear port of the T-shaped nozzle. An internally threaded pipe is threaded onto the outer surface of the externally threaded pipe. A rotating ring is rotatably sleeved at the rear end of the internally threaded pipe. A bellows is fixedly installed at the rear end of the rotating ring. The rear end of the bellows is fixed and connected to the front outlet of the air pump. The airflow ejected by the air pump flows into the T-shaped cavity through the bellows, the internally threaded pipe, and the externally threaded pipe.

4. A spray gun for applying waterproof coating according to any one of claims 1-3, characterized in that, The front end of the main chamber is connected to the T-shaped nozzle via an installation unit. The installation unit includes several installation bolts. The corresponding end surfaces of the main chamber and the T-shaped nozzle are provided with installation edges with threaded holes. During installation, the two installation edges are fitted together, and the installation bolts are screwed into the corresponding threaded holes on the two installation edges.

5. The spray gun for applying waterproof coating according to claim 1, characterized in that, Magnetic plates are fixedly installed on the upper surface of the annular protrusion at the storage tank port and on the annular horizontal inner wall of the semi-annular guide plate.

6. The spray gun for applying waterproof coating according to claim 1, characterized in that, The lower end of the straw can extend into the inner cavity of the storage container near the bottom of the container.

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