Polyurethane polyurea spraying machine

Abstract

The utility model relates to the technical field of spraying machines, in particular to a polyurethane polyurea spraying machine which comprises a support, two charging buckets fixedly connected to the support and a supercharging device fixedly connected to the support, the supercharging device comprises a fixing frame, a hydraulic cylinder and two plunger pumps, and the hydraulic cylinder and the plunger pumps are fixedly connected to the fixing frame. A piston rod of the hydraulic cylinder is fixedly connected with the top of a plunger of the plunger pump through a linkage plate; the hydraulic cylinder is connected with an electromagnetic directional valve through an oil pipe; the electromagnetic directional valve is connected with an oil tank through an oil pipe; the oil tank is fixedly connected to the support; inlets of the two plunger pumps are respectively connected with the bottoms of the two material tanks through material pipes; according to the utility model, the pressurizing device is arranged, so that the pressure of materials can be controlled, and the two plunger pumps are simultaneously driven by one hydraulic cylinder, so that the pressure of the materials can be synchronously controlled; and the pressure of the two materials can be kept at a set value, so that the spraying effect is better.

Description

Technical Field

[0001] This utility model relates to the field of spraying machine technology, specifically a polyurethane polyurea spraying machine. Background Technology

[0002] There is an existing polyurethane / polyurea spray gun with a material circulation system. The spray gun is connected to a material inlet pipe and a material return pipe. When not spraying, the material returns to the material box along the material return pipe, thereby avoiding the material from staying in the spray gun, causing the temperature to drop and producing material head, which would affect the spraying effect.

[0003] Patent CN214773487U discloses a supercritical carbon dioxide polyurethane spraying system, including a spray gun, and storage tanks two and three connected to the spray gun via feed pipes and return pipes; the feed pipes are equipped with an isocyanate heater, a combined polyether heater, and a mixing heater for heating; the feed pipes are also equipped with a third metering pump and a fourth metering pump for providing power.

[0004] The disadvantages of the patent solution with authorization announcement number CN214773487U are that the two supply tanks are controlled by two metering pumps, which can accurately control the flow rate of the material but cannot control the pressure of the material synchronously; the heater is set on the feed pipe, which cannot accurately control the temperature of the material; and the uniformity of the material cannot be guaranteed, resulting in poor spraying effect. Utility Model Content

[0005] The main objective of this invention is to provide a polyurethane / polyurea spraying machine to solve the problems in the prior art where the spraying system cannot synchronously control the material pressure, cannot accurately control the material temperature, and cannot accurately control the material temperature, resulting in poor spraying effect.

[0006] To achieve the above objectives, this utility model provides a polyurethane / polyurea spraying machine, including a support, two material tanks fixedly connected to the support, and a pressurizing device fixedly connected to the support. The pressurizing device includes a fixed frame, a hydraulic cylinder fixedly connected to the fixed frame, and two plunger pumps. The piston rod of the hydraulic cylinder is fixedly connected to the top of the plunger of the plunger pump through a linkage plate. The hydraulic cylinder is connected to an electromagnetic directional valve through an oil pipe, and the electromagnetic directional valve is connected to an oil tank through an oil pipe. The oil tank is fixedly connected to the support. The inlets of the two plunger pumps are respectively connected to the bottom of the two material tanks through material pipes.

[0007] Furthermore, it also includes a connecting block with four connecting pipe channels; the outlets of the two plunger pumps are connected to two of these connecting pipe channels via discharge pipes, and these two connecting pipe channels are connected to pressure gauges; the other two connecting pipe channels are connected to the tops of the two material tanks via return pipes.

[0008] Furthermore, a stirring rod is installed inside the material tank, and a stirring motor is fixedly connected to the top of the material tank. The output shaft of the stirring motor is fixedly connected to the stirring rod.

[0009] Furthermore, the outside of the tank is covered with a heat tracing cable with a constant temperature function.

[0010] Furthermore, the top of the tank is provided with an opening, the opening is provided with an opening cover, the bottom is provided with an outlet connector, and the outlet connector is provided with a valve.

[0011] Furthermore, a controller is fixedly connected to the support, and the controller is electrically connected to the solenoid directional valve.

[0012] Furthermore, the bottom of the support is equipped with casters.

[0013] This invention, by setting up a pressurization device, can control the pressure of the material, and by using a hydraulic cylinder to simultaneously drive two plunger pumps, it can synchronously control the pressure of the material; it can keep the pressure of the two materials at the set value, resulting in a better spraying effect.

[0014] This invention, by setting a constant temperature heating tape, can keep the temperature of the material constant, thereby improving the coating effect.

[0015] This invention, by incorporating a stirring rod and a stirring motor, enables more uniform material distribution, preventing material from settling at the bottom and forming hard lumps, thus resulting in a better spraying effect. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0017] Figure 1 This is a front view schematic diagram of the polyurethane polyurea spraying machine in the embodiment;

[0018] Figure 2 This is a top view of the polyurethane / polyurea spraying machine in the embodiment.

[0019] Figure 3 This is a three-dimensional structural diagram of the polyurethane / polyurea spraying machine in the embodiment;

[0020] Figure 4 This is a schematic diagram of the internal structure of the material tank in the embodiment;

[0021] Figure 5 This is a schematic diagram of the structure at the plunger pump in the embodiment;

[0022] In the diagram: 1. Support; 2. Material tank; 201. Opening cover; 202. Outlet connector; 3. Connecting block; 301. Pipeline channel; 4. Pressurization device; 401. Piston pump; 402. Hydraulic cylinder; 403. Linkage plate; 404. Fixing frame; 405. Solenoid directional valve; 406. Oil tank; 5. Pressure gauge; 6. Discharge pipe; 7. Return pipe; 8. Stirring rod; 9. Stirring motor; 10. Heating tape; 11. Valve; 12. Controller; 13. Casters. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown, according to an embodiment of this utility model, a polyurethane / polyurea spraying machine is provided, including a support 1, two material tanks 2 fixedly connected to the support 1, and a pressurizing device 4 fixedly connected to the support 1. The pressurizing device 4 includes a fixed frame 404, a hydraulic cylinder 402 fixedly connected to the fixed frame 404, and two plunger pumps 401. The piston rod of the hydraulic cylinder 402 is fixedly connected to the top of the plunger of the plunger pump 401 through a linkage plate 403. The hydraulic cylinder 402 is connected to an electromagnetic reversing valve 405 through an oil pipe. The electromagnetic reversing valve 405 is of type... The principle of the device is to change the flow direction of the internal hydraulic oil under electromagnetic power, so that the hydraulic cylinder 402 reciprocates; the electromagnetic reversing valve 405 is connected to the oil tank 406 through the oil pipe, and the oil pump is connected to the oil pipe and is located above the oil tank 406; the electromagnetic reversing valve 405 continuously reverses the direction to make the hydraulic cylinder 402 reciprocate up and down, which in turn drives the plunger of the plunger pump 401 to reciprocate, thereby achieving pressurization; the oil tank 406 is fixedly connected to the support 1; the inlets of the two plunger pumps 401 are respectively connected to the bottom of the two material tanks 2 through the material pipe.

[0025] It also includes a connecting block 3, which has four connecting pipe channels 301; the outlets of the two plunger pumps 401 are connected to two of the connecting pipe channels 301 through the discharge pipe 6, and these two connecting pipe channels 301 are connected to pressure gauges 5; the other two connecting pipe channels 301 are connected to the tops of the two material tanks 2 through the return pipe 7 respectively; the four connecting pipe channels 301 are also connected to the two feed ports and return ports of the spray gun through pipes respectively, so as to transport the material to the spray gun.

[0026] The material tank 2 is equipped with a stirring rod 8, and the top of the material tank 2 is fixedly connected to a stirring motor 9. The output shaft of the stirring motor 9 is fixedly connected to the stirring rod 8.

[0027] The material tank 2 is covered with a heat tracing cable 10; the heat tracing cable can keep the material inside the material tank 2 at a constant temperature.

[0028] The top of the material tank 2 is provided with an opening and an opening cover 201. The bottom is provided with an outlet connector 202 and a valve 11 is provided at the outlet connector 202. During maintenance, the valve 11 can be closed to isolate the material tank 2 from other components.

[0029] A controller 12 is fixedly connected to the support 1. The controller 12 is electrically connected to the solenoid reversing valve 405, the stirring motor 9 and the heating tape 10.

[0030] The bottom of the support 1 is equipped with casters 13, which facilitate the movement of the polyurethane polyurea spraying machine.

[0031] When using the polyurethane polyurea spraying machine, the material is first added into the material tank 2. The heating cable 10 heats the material to the set temperature and keeps the temperature constant. After being pressurized by the pressurizing device 4, the material is transported to the spray gun through the pipeline. When the spray gun is in the stopped spraying state, the material returns to the material tank 2 through the return pipe 7.

[0032] This embodiment, by setting up a pressurization device, can control the pressure of the material, and by using a hydraulic cylinder to simultaneously drive two plunger pumps, it can synchronously control the pressure of the material; it can keep the pressure of the two materials at the set value, resulting in a better spraying effect.

[0033] This embodiment uses a constant temperature heating tape to keep the material temperature constant, thus improving the coating effect.

[0034] This embodiment, by setting up a stirring rod and a stirring motor, can make all parts of the material more uniform, avoid the material settling to the bottom and forming hard lumps, and make the spraying effect better.

[0035] This embodiment can precisely control the pressure and temperature of the material and achieve good uniformity, thereby ultimately achieving an optimal spraying effect.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A polyurethane polyurea spraying machine comprising a support (1) on which two tanks (2) are fixedly connected, characterized in that, A booster device (4) is fixedly connected to the support (1). The booster device (4) includes a fixed frame (404), a hydraulic cylinder (402) fixedly connected to the fixed frame (404), and two plunger pumps (401). The piston rod of the hydraulic cylinder (402) is fixedly connected to the top of the plunger of the plunger pump (401) through a linkage plate (403). The hydraulic cylinder (402) is connected to an electromagnetic reversing valve (405) through an oil pipe. The electromagnetic reversing valve (405) is connected to an oil tank (406) through an oil pipe. The oil tank (406) is fixedly connected to the support (1). The inlets of the two plunger pumps (401) are respectively connected to the bottom of two material tanks (2) through material pipes.

2. The polyurethepolyurea spray machine of claim 1, wherein, It also includes a connecting block (3), which has four pipe channels (301); the outlets of the two plunger pumps (401) are connected to two of the pipe channels (301) through the discharge pipe (6), and these two pipe channels (301) are connected to pressure gauges (5); the other two pipe channels (301) are connected to the tops of the two material tanks (2) through the return pipe (7).

3. The polyurethepolyurea spray machine of claim 1, wherein, The material tank (2) is equipped with a stirring rod (8) inside, and a stirring motor (9) is fixedly connected to the top of the material tank (2). The output shaft of the stirring motor (9) is fixedly connected to the stirring rod (8).

4. The polyurethepolyurea spray machine of claim 1, wherein, The material tank (2) is covered with a heat tracing cable (10) with constant temperature function.

5. The polyurethepolyurea spray machine of claim 1, wherein, The top of the material tank (2) is provided with an opening, the opening is provided with an opening cover (201), the bottom is provided with an outlet connector (202), and the outlet connector (202) is provided with a valve (11).

6. The polyurethepolyurea spray machine of claim 1, wherein, A controller (12) is fixedly connected to the support (1), and the controller (12) is electrically connected to the electromagnetic reversing valve (405).

7. The polyurethane polyurea spraying machine as described in claim 1, characterized in that, The bottom of the support (1) is provided with a movable wheel (13).

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