Method for mixing two-component polyurea by using spray gun and special spray gun thereof

[0023] The present invention is further elaborated and explained in connection with the specific embodiments and description.

[0024] In order to make the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely the embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0025] In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by "upper", "lower" "horizontal", "within", "outside", etc. is based on the orientation or positional relationship shown in the drawings. It is only to facilitate the description of the present invention and simplified description, rather than indicating or implying that the device or element must have a particular orientation, and therefore, it is not understood to be limited to the present invention.

[0026] A two-component polyurea is a method of mixing with a spray gun, comprising the steps:

[0027] (1) Two-component polyurea Group A and B group feed control step: the amount of feed tube of the bicomponent polyurea A and Group B is controlled in the spray gun feed tube. The speed is controlled to ensure that the two materials can be mixed according to the proportion of the relevant technical requirements; the pressure monitoring switch is set in the group B group, and the control Switch controls the group A and B groups. The feed pressure value is 0.4 kPa-4kPa, thereby controlling the compound ratio of the group A and the B group;

[0028] (2) Two-component coupling steps: In the export of the gun feed tube, the two sets from the A group from the spray gun and the group B will be sent to the discharge port of the group A with the B group. Mixed cavity;

[0029] (3) Mixed step: In the diameter φ9-10mm lumen, multiple SX static mixers are mixed, and the mixing mode of multiple SX static mixers is: multiple SX static mixers are arranged along the tube cavity. A row of mounted, adjacent SX static mixers use a horizontal vertical alternate placement;

[0030] (4) Atomization step: The mixed group A is sent to the group B for atomizing, and then ejectively ejected.

[0031] Please refer to figure 1 , figure 2 , image 3 , Figure 4 According to a two-component polyurea dedicated spray gun, including a gun handle 6, a component feed tube 1 and B, the A group of feed tube 1 and B group feed 2 connecting a coupling 3 Feed port, the two discharge ports of the coupling 3 are smaller than the spacing of the feed port, forming a contracted structure; two discharge ports of the coupling 3 connect the mixing chamber 4, the mixing chamber 4 is a tubular structure, and the front end is connected to the coupling port such that the material sent from the two discharge ports of the coupling 3 is mixed in the mixing chamber, and 17 X-type static mixers are installed in the mixing chamber structure inner hole. The rear end of the mixing chamber 4 is attached to the atomizer 5; the mixing chamber 4 is a φ9-10 mm lumen for the Group B, and the 17 X-static mixers placed in the mixing chamber 4 are adjacent. SX Static Mixer One Horizontal SX Static Mixer 13 One Vertical Sx Static Mixer 14 Alternate Placement, such as Figure 4 As shown, the spray gun 6 sets the total control switch 7 to control the entire system; the total control switch 7 is located at the rear end of the spray gun switch, and after the spray gun switch 15 is swoled, the compression total control switch 7 is turned on, the control system Work, after the spray gun switch 15 is separated, the total control switch 7 is turned off, and the control system stops working.

[0032] The coupling 3 is a transition device that is coupled to the charge tube 1 and the B group of feed tube 2 and the mixing chamber 4, which makes two separate input ports to be combined into an outlet that can be coupled to the mix cavity 4. Union with the mixing chamber 4; the end of the coupling 3 is the outer threaded structure, and the mixing chamber inlet end 11 of the mixing chamber 4 is a threaded hole, and the coupling 3 is fastened by the threaded structure and the mixing chamber 4. The coupling 3 sets the b interface 7 of the A interface 6 and φ10 mm of φ10 mm. The exit provided on the other end is two φ3mm incompatible through holes, the first hole 8, the second hole 9, and the second hole 9 is provided with a thickness of 1 mm long 10 mm, and the resilient plate 10 is a front extension, and the front end extension To the mixing chamber 4, the staper plate 10 can prevent the material from which the first hole 8 and the second hole 9 is not sufficiently mixed, resulting in the clogging of the two holes.

[0033] The A group feed tube 1 is provided with a pressure monitoring switch on the b tube 2, respectively, and monitors the feed pressure of the Group B in group B. Through this pressure monitoring switch controls the feed pressure value of the group B and the B group, by controlling the flow rate and speed of the A material and B material to enter the system, thereby controlling the amount of feed ratio of Group B. .

[0034] The mixing chamber outlet end 12 of the front end of the mixing chamber 4 is connected to the atomizer 5.

[0035] When the present invention is used, the spray gun switch 15 is swinghed backwards, and the press control switch 7 is powered by power, the A component, the B group is respectively supplied from the A group feed tube 1, and the B group feed tube 2 is pressed under the control of the pressure monitoring switch. The ratio enters the coupling 3, and the component B is fed into the mixing chamber 4 by the coupling 3, and after the mixing chamber 4 is mixed, the nebulizer 5 is outward. Eject.

[0036] It will be noted that the above embodiments are intended to illustrate the technical solutions of the present invention, and not to the scope of the invention, although the present invention will be described in detail, and those skilled in the art will understand The technical solution of the present invention can be modified or equivalent to replacement without departing from the spirit and scope of the present invention.