Mixing equipment for polyurea liquid material

Abstract

The utility model belongs to the technical field of liquid mixing equipment, and particularly relates to mixing equipment for polyurea liquid materials, which comprises a first spray pipe, a second spray pipe mounted on the inner side of the first spray pipe, a mixing cavity formed in one end, extending into the first spray pipe, of the second spray pipe, and a first air cavity formed in one end, close to the mixing cavity, of the second spray pipe. A guide rod is connected into the second spray pipe, the end, close to the mixing cavity, of the guide rod is located in the first air cavity and is in clearance fit with the first air cavity, an air plug is installed on the outer side of the guide rod, a second air cavity communicated with the first air cavity is further formed in the second spray pipe, the air plug is connected into the second spray pipe through the second air cavity, and the second air cavity is in clearance fit. The second spray pipe is further provided with a through hole communicated with the second air cavity. According to the mixing equipment for the polyurea liquid material, the air plug capable of blocking the through hole is arranged in the second air cavity, so that raw materials for preparing the polyurea liquid material are prevented from entering the first air cavity through the through hole.

Description

Technical Field

[0001] This utility model relates to the field of liquid mixing equipment technology, and in particular to a mixing equipment for polyurea liquid materials. Background Technology

[0002] Two-component polymeric waterproofing material (polyurea), as a high-performance coating material, possesses a series of unique properties and advantages. Compared with traditional coatings, it is lower in cost, more economical, and resistant to ultraviolet rays, aging, high temperatures, acids, and alkalis, making it suitable for outdoor moisture-proofing, corrosion protection, and waterproofing. These properties make it widely used in construction, bridges, tunnels, water conservancy, chemical industry, energy, and many other fields. Polyurea liquid is a two-component liquid material composed of isocyanate and amine or polyether amine components. After mixing, they undergo a rapid reaction to form a tough, elastic, wear-resistant, and waterproof polyurea elastomer coating. All raw materials required for the preparation of polyurea liquid require mixing and spraying.

[0003] Existing mixing methods mostly involve passing the raw material into a nozzle with a connected fluid chamber and then spraying it out. This presents the following problems in actual operation:

[0004] 1) When the nozzle sprays out liquid material, there is usually an air chamber inside the nozzle that delivers high-pressure gas. After the mixing is finished, the residual liquid in the nozzle can easily enter the air chamber through the gas release hole, causing blockage of the air chamber and affecting the liquid material spraying effect.

[0005] 2) Before spraying the liquid material, the raw materials need to be proportioned. Manual proportioning can easily lead to deviations in the raw material ratio, which will affect the performance of the polyurea liquid material. Utility Model Content

[0006] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0007] Specifically, the technical problem to be solved by this utility model is to provide a mixing device for polyurea liquid materials, so as to solve the technical problem that when the current nozzle sprays liquid materials, the nozzle usually has a gas chamber for conveying high-pressure gas. After the mixing is completed, the residual liquid in the nozzle can easily enter the gas chamber through the gas release hole, causing blockage of the gas chamber and affecting the spraying effect of the liquid materials.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A mixing device for polyurea liquid material includes a first nozzle, a second nozzle fixedly installed on the inner side of the first nozzle, and a mixing chamber opened at one end of the second nozzle extending into the first nozzle.

[0010] The second nozzle has a first air chamber at one end near the mixing chamber. A guide rod is movably connected to the second nozzle. The end of the guide rod near the mixing chamber is located in the first air chamber and is in clearance fit with the first air chamber. An air plug is fixedly installed on the outside of the guide rod. The second nozzle also has a second air chamber that communicates with the first air chamber. The air plug is movably connected to the second nozzle through the second air chamber and is in clearance fit with the second air chamber. The second nozzle also has a through hole that communicates with the second air chamber.

[0011] As an improved technical solution, a sleeve is fixedly installed at the end of the second nozzle away from the mixing chamber, and the end of the guide rod near the sleeve protrudes from the second nozzle. A spring is also provided inside the sleeve, and the spring is fitted onto the guide rod. The end of the guide rod located in the sleeve has an integrally formed retaining ring. The two ends of the spring are respectively connected to the sleeve and the retaining ring.

[0012] As an improved technical solution, a booster pipe is fixedly installed in the through hole of the second nozzle, and an air hole communicating with the first air chamber is opened on the first nozzle. An air supply pipe is fixedly installed on the first nozzle through the air hole, and one end of the air supply pipe extending into the second nozzle is located in the first air chamber.

[0013] As an improved technical solution, the second nozzle is further provided with a material conveying chamber, which is symmetrically distributed on both sides of the mixing chamber. The second air chamber is connected to the inside of the material conveying chamber through a booster pipe. The material conveying chambers are connected to each other through a fluid chamber, and the material conveying chamber is connected to the mixing chamber through the fluid chamber.

[0014] As an improved technical solution, a first nozzle is fixedly installed at one end of the second nozzle extending into the first nozzle, and the first nozzle is connected to a second nozzle through a mixing chamber. The second nozzle is fixedly installed at the end of the first nozzle away from the sleeve.

[0015] As an improved technical solution, the second nozzle is also provided with a liquid inlet communicating with the material conveying chamber. The second nozzle is fixedly installed with a material conveying pipe through the liquid inlet, and one end of the material conveying pipe extending into the second nozzle is located in the material conveying chamber.

[0016] As an improved technical solution, the end of the material conveying pipe protruding from the first nozzle is respectively equipped with a control valve and a flow pump, and the flow pump is fixedly installed on the outside of the first nozzle.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, an air plug connected to a guide rod moves towards the end of the first air chamber in the second air chamber, blocking the through hole on the second nozzle, thereby preventing the raw materials for preparing polyurea liquid material from entering the first air chamber through the through hole;

[0019] 2. In this utility model, the polyurea liquid material prepared by conveying it into the material chamber through the conveying pipe is transported away from the fluid chamber and into the mixing chamber for mixing, and finally sprayed out from the first spray pipe through the second nozzle. The mixing effect of the polyurea liquid material is ensured by the multi-stage spraying and mixing method.

[0020] 3. This utility model controls the opening and closing of the feed pipe and the corresponding feed chamber through a control valve, and precisely controls the proportion of polyurea liquid material to be prepared through a flow pump, thereby ensuring the stability of the reaction and the performance of the product. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a three-dimensional structural diagram of the mixing equipment for polyurea liquid materials according to this utility model.

[0023] Figure 2 This is a schematic diagram of the explosive decomposition structure of the mixing equipment for polyurea liquid materials according to this utility model.

[0024] Figure 3 This is a cross-sectional view of the first nozzle of the mixing device for polyurea liquid materials according to this utility model.

[0025] Figure 4 This is a cross-sectional view of the second nozzle of the mixing device for polyurea liquid materials according to this utility model.

[0026] Figure 5 This is a schematic diagram of the conveying pipe structure of the mixing equipment for polyurea liquid materials according to this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First nozzle; 2. Second nozzle; 3. Mixing chamber; 4. First air chamber; 5. Guide rod; 6. Air plug; 7. Second air chamber; 8. Sleeve; 9. Spring; 10. Pressure boosting pipe; 11. Air hole; 12. Air delivery pipe; 13. Material delivery chamber; 14. Fluid chamber; 15. First nozzle; 16. Second nozzle; 17. Liquid delivery hole; 18. Material delivery pipe; 19. Control valve; 20. Flow pump. Detailed Implementation

[0029] 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.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0032] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] like Figures 1 to 5As shown in the figure, this embodiment provides a mixing device for polyurea liquid material. This mixing device includes a first nozzle 1, a second nozzle 2 fixedly installed inside the first nozzle 1, a mixing chamber 3 extending into the first nozzle 1 at one end, a first air chamber 4 near the mixing chamber 3 at the other end of the second nozzle 2, a guide rod 5 movably connected to the second nozzle 2, the end of the guide rod 5 near the mixing chamber 3 located in the first air chamber 4 and clearance-fitted with the first air chamber 4, an air plug 6 fixedly installed on the outer side of the guide rod 5, and a second air chamber 7 communicating with the first air chamber 4 in the second nozzle 2. The air plug 6 is movably connected to the second nozzle 2 through the second air chamber 7, and the second air chamber 7 is clearance-fitted. The upper part is also provided with a through hole connected to the second air chamber 7. The second nozzle 2 is inserted into the first nozzle 1 and is in clearance fit with the first nozzle 1. The raw materials for preparing polyurea liquid material can be mixed in the mixing chamber 3 and then sprayed out. The guide rod 5 is inserted into the second nozzle 2 and can move in the first air chamber 4. When the air plug 6 is located at the end of the second air chamber 7 that is close to the first air chamber 4, it blocks the through hole on the second nozzle 2, so that the gas in the first air chamber 4 cannot be discharged. When the first air chamber 4 is filled with air, the pressure increases, pushing the air plug 6 in the second air chamber 7 to the end away from the first air chamber 4, so that the gas in the first air chamber 4 can be discharged through the through hole on the second nozzle 2, thereby preventing the raw materials for preparing polyurea liquid material from entering the first air chamber 4 when it is not filled with air.

[0034] A sleeve 8 is fixedly installed at the end of the second nozzle 2 away from the mixing chamber 3. The end of the guide rod 5 near the sleeve 8 protrudes from the second nozzle 2. A spring 9 is also provided inside the sleeve 8. The spring 9 is fitted onto the guide rod 5, and the end of the guide rod 5 located in the sleeve 8 has an integrally formed retaining ring. The two ends of the spring 9 are connected to the sleeve 8 and the retaining ring, respectively. When the spring 9 is in the extended state, it pushes the air plug 6 connected to the guide rod 5 to move towards the end of the second air chamber 7 closer to the first air chamber 4, thereby blocking the through hole on the second nozzle 2.

[0035] A booster pipe 10 is fixedly installed in the through hole of the second nozzle 2. An air hole 11 communicating with the first air chamber 4 is opened on the first nozzle 1. An air supply pipe 12 is fixedly installed on the first nozzle 1 through the air hole 11, and one end of the air supply pipe 12 extends into the second nozzle 2 and is located in the first air chamber 4. The air supply pipe 12 can fill the first air chamber 4 with air through the air hole 11, thereby pushing the air plug 6 so that the gas in the first air chamber 4 can be released through the booster pipe 10.

[0036] The second nozzle 2 also has a material conveying chamber 13, which is symmetrically distributed on both sides of the mixing chamber 3. The second air chamber 7 is connected to the inside of the material conveying chamber 13 through the pressurizing pipe 10. The material conveying chambers 13 are connected to each other through the fluid chamber 14, and the material conveying chamber 13 is connected to the mixing chamber 3 through the fluid chamber 14. The material conveying chamber 13 can be filled with the raw materials for preparing polyurea liquid material, and it is initially mixed in the mixing chamber 3 through the fluid chamber 14. When the pressurizing pipe 10 exhausts the gas, the raw materials for preparing polyurea liquid material in the material conveying chamber 13 are pressurized and sprayed out.

[0037] The second nozzle 2 extends into the first nozzle 1 and is fixedly installed at one end. The first nozzle 15 is connected to the second nozzle 16 through the mixing chamber 3. The second nozzle 16 is fixedly installed at the end of the first nozzle 1 away from the sleeve 8. The first nozzle 15 can spray the mixture of polyurea liquid material through the mixing chamber 3 to the second nozzle 16 and finally spray it out from the second nozzle 16.

[0038] The second nozzle 2 is also provided with a liquid inlet 17 that communicates with the material delivery chamber 13. The second nozzle 2 is fixedly installed with a material delivery pipe 18 through the liquid inlet 17, and one end of the material delivery pipe 18 extends into the second nozzle 2 and is located in the material delivery chamber 13. The material delivery pipe 18 can deliver the raw materials for preparing polyurea liquid material into the material delivery chamber 13 without interfering with each other during the delivery process.

[0039] The feed pipe 18 protruding from the first nozzle 1 is equipped with a control valve 19 and a flow pump 20. The flow pump 20 is fixedly installed on the outside of the first nozzle 1. The control valve 19 can control the opening and closing of the corresponding feed pipe 18. The flow pump 20 can accurately control the ratio of the two components to ensure the stability of the reaction and the performance of the product.

[0040] When polyurea liquid material needs to be prepared, the gas supply pipe 12 is connected to an external gas source, and air is injected into the first gas chamber 4 through the gas hole 11, increasing the pressure in the first gas chamber 4. This pushes the gas plug 6, which, under the constraint of the guide rod 5, moves along the second gas chamber 7 to the end away from the first gas chamber 4. This causes the through hole on the second nozzle 2, which communicates with the second gas chamber 7, to communicate with the pressurization pipe 10. The gas in the first gas chamber 4 enters the conveying chamber 13 through the pressurization pipe 10 in the through hole. The polyurea liquid material being prepared, which is conveyed by the conveying pipe 18 in the conveying chamber 13, is transported away from the fluid chamber 14 and into the mixing chamber 3 for mixing. Finally, it is ejected from the first nozzle 1 through the second nozzle 16. The multi-stage spray mixing method ensures the mixing effect of polyurea liquid material. When the first air chamber 4 is not filled with air, as the spring 9 extends, it pushes the guide rod 5 to move axially along the second spray pipe 2 in the sleeve 8, and drives the air plug 6 connected to the guide rod 5 to move towards the end of the second air chamber 7 closer to the first air chamber 4, blocking the through hole on the second spray pipe 2. This prevents the raw material for preparing polyurea liquid material from entering the first air chamber 4 through the through hole. During this process, the control valve 19 controls the opening and closing of the feed pipe 18 and the corresponding feed chamber 13, and the flow pump 20 precisely controls the proportion of polyurea liquid material to be prepared, ensuring the stability of the reaction and the performance of the product.

[0041] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A mixing device for polyurea liquid materials, characterized in that: It includes a first nozzle (1), and a second nozzle (2) is fixedly installed on the inner side of the first nozzle (1). The second nozzle (2) extends into the first nozzle (1) and has a mixing chamber (3) at one end. The second nozzle (2) has a first air chamber (4) at one end near the mixing chamber (3). A guide rod (5) is movably connected in the second nozzle (2). The end of the guide rod (5) near the mixing chamber (3) is located in the first air chamber (4) and is in clearance fit with the first air chamber (4). An air plug (6) is fixedly installed on the outside of the guide rod (5). The second nozzle (2) also has a second air chamber (7) that communicates with the first air chamber (4). The air plug (6) is movably connected in the second nozzle (2) through the second air chamber (7) and is in clearance fit with the second air chamber (7). The second nozzle (2) also has a through hole that communicates with the second air chamber (7).

2. The mixing equipment for polyurea liquid materials according to claim 1, characterized in that: A sleeve (8) is fixedly installed at one end of the second nozzle (2) away from the mixing chamber (3). The end of the guide rod (5) near the sleeve (8) protrudes from the second nozzle (2). A spring (9) is also provided inside the sleeve (8). The spring (9) is fitted on the guide rod (5), and the end of the guide rod (5) located in the sleeve (8) has an integrally formed retaining ring. The two ends of the spring (9) are respectively connected to the sleeve (8) and the retaining ring.

3. The mixing equipment for polyurea liquid materials according to claim 2, characterized in that: A booster pipe (10) is fixedly installed in the through hole of the second nozzle (2). An air hole (11) communicating with the first air chamber (4) is opened on the first nozzle (1). An air supply pipe (12) is fixedly installed on the first nozzle (1) through the air hole (11), and one end of the air supply pipe (12) extending into the second nozzle (2) is located in the first air chamber (4).

4. The mixing equipment for polyurea liquid materials according to claim 1, characterized in that: The second nozzle (2) is also provided with a material conveying chamber (13), and the material conveying chamber (13) is symmetrically distributed on both sides of the mixing chamber (3). The second air chamber (7) is connected to the inside of the material conveying chamber (13) through the booster pipe (10). The material conveying chambers (13) are connected to each other through the fluid chamber (14), and the material conveying chamber (13) is connected to the mixing chamber (3) through the fluid chamber (14).

5. The mixing equipment for polyurea liquid materials according to claim 4, characterized in that: The second nozzle (2) extends into one end of the first nozzle (1) and is fixedly installed with a first nozzle (15). The first nozzle (15) is connected to a second nozzle (16) through the mixing chamber (3). The second nozzle (16) is fixedly installed at one end of the first nozzle (1) away from the sleeve (8).

6. The mixing equipment for polyurea liquid materials according to claim 5, characterized in that: The second nozzle (2) is also provided with a liquid inlet (17) that communicates with the material delivery chamber (13). The second nozzle (2) is fixedly installed with a material delivery pipe (18) through the liquid inlet (17), and one end of the material delivery pipe (18) extending into the second nozzle (2) is located in the material delivery chamber (13).

7. The mixing equipment for polyurea liquid materials according to claim 6, characterized in that: The feed pipe (18) protruding from the first nozzle (1) is provided with a control valve (19) and a flow pump (20), and the flow pump (20) is fixedly installed on the outside of the first nozzle (1).

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