CN-224224357-U - Turbulent flow piston structure for polyurethane foaming gun

CN224224357UCN 224224357 UCN224224357 UCN 224224357UCN-224224357-U

Abstract

The utility model discloses a turbulent flow piston structure for a polyurethane foaming gun, which belongs to the technical field of polyurethane foaming guns and comprises a piston and a valve seat, wherein the piston is arranged on the valve seat, a rod body of the piston extends out of the valve seat, one end of the piston is provided with a positioning pin hole, a mounting pin hole corresponding to the pin hole arranged on the piston is arranged on the valve seat, the mounting pin hole is connected with the positioning pin hole through a pin, the pin is tightly matched with the mounting pin hole, the pin is in sliding fit with the positioning pin hole, a sealing ring groove is arranged on the piston, an oil inlet and an oil outlet are respectively arranged on two sides of the sealing ring groove of the piston on the valve seat, and a spiral turbulent flow groove is arranged at the free end of the rod body of the piston, which is far away from the valve seat. The utility model can effectively solve the problem of uneven mixing in the traditional mixing mode and is beneficial to improving the production efficiency and the product quality. The innovative design is of great significance to improving the quality and efficiency of polyurethane foam production.

Inventors

WU JINLI
LIU YUE
SUN XUEWEI
LIAO YUJIE
DING MAOYU
WANG DAILIN
LIU SENYU
YUE ZIXUAN
HUANG JIEKAI

Assignees

重庆科技大学

Dates

Publication Date: 20260512
Application Date: 20250611
Priority Date: 20240701

Claims (3)

1. A turbulent flow piston structure for a polyurethane foaming gun is characterized in that the turbulent flow piston (500) is composed of a piston (1) and a valve seat (2), the piston (1) is arranged on the valve seat (2), a rod body of the piston (1) extends out of the valve seat (2), one end of the piston (1) is provided with a positioning pin hole (12), the valve seat (2) is provided with a mounting pin hole (22) corresponding to the pin hole (12) arranged on the piston (1), the mounting pin hole (22) is connected with the positioning pin hole (12) through a pin, the pin is in tight fit with the mounting pin hole (22), the pin is in sliding fit with the positioning pin hole (12), the valve seat (1) is provided with a sealing ring groove (15), oil inlets (23) and oil outlets (24) are respectively arranged on two sides of the sealing ring groove (15) of the piston (1), and the rod body of the piston (1) is provided with a spiral flow disturbing groove (11) at the free end deviating from the valve seat (2).
2. The turbulence piston structure for polyurethane foam gun according to claim 1, wherein the piston (1) of the turbulence piston (500) is inclined and stretches into the mixing cavity (400) of the gun body (100) of the polyurethane foam gun, and the end face of the free end of the rod body of the piston (1) is provided with an inclined surface (14) vertically matched with the mixing cavity (400) according to the inclination angle.
3. The turbulent flow piston structure for polyurethane foam gun according to claim 1 or 2, further comprising a heating rod (5), a wire (4) and a plug cap (3), wherein an inner channel (13) extending to the free end of the rod body is axially arranged on the piston (1), a threaded mounting hole (21) matched with the plug cap (3) is arranged on the valve seat (2), the heating rod (5) is arranged at the top end of the inner channel (13), the wire (4) sequentially passes through the plug cap (3) and the inner channel (13) and then is connected with the heating rod (5), and plugs (16) matched with the wire (4) are arranged on the piston (1) and the plug cap (3).

Description

Turbulent flow piston structure for polyurethane foaming gun Technical Field The utility model belongs to the technical field of polyurethane foaming production equipment, and provides a turbulent flow piston structure for a polyurethane foaming gun. Background The polyurethane foaming machine is special equipment for filling and foaming polyurethane foam plastics. As long as the performance index of the polyurethane component raw materials meets the formula requirement, the uniform and qualified foam product can be produced by the equipment. The polyurethane foaming machine can be used for automobile interior decoration, heat preservation wall spraying, heat preservation pipeline manufacturing, processing of bicycle and motorcycle saddle sponge and the like. As one of the production facilities of polyurethane foam materials, the performance level of a polyurethane high-pressure foaming machine and its technical index determine the overall level of such facilities. However, in the mixing process of processing polyurethane A and B stock solutions, the conventional spray gun of the polyurethane foaming machine has certain limitation, namely, the conventional mixing mode is easy and direct, the condition of uneven mixing exists, the mixing effect is not satisfactory, the discharging temperature is easily influenced by the outside, and the ever-growing production requirements of high quality and high efficiency are difficult to meet. The current situation is urgent to need a new technical scheme to break through the existing bottleneck and realize better performance. Disclosure of utility model Therefore, the utility model aims to provide a turbulent flow piston structure for a polyurethane foaming gun, which solves the problem of uneven mixing of polyurethane stock solution, thereby improving the quality and effect of mixing. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a turbulent flow piston structure for a polyurethane foaming gun, which comprises a piston and a valve seat, wherein the piston is arranged on the valve seat, a rod body of the piston extends out of the valve seat, one end of the piston is provided with a positioning pin hole, a mounting pin hole corresponding to the pin hole arranged on the piston is arranged on the valve seat, the mounting pin hole is connected with the positioning pin hole through a pin, the pin is tightly matched with the mounting pin hole, the pin is in sliding fit with the positioning pin hole, a sealing ring groove is arranged on the piston, an oil inlet and an oil outlet are respectively arranged on the valve seat and at two sides of the sealing ring groove of the piston, and a spiral disturbing groove is arranged at the free end of the rod body of the piston, which is away from the valve seat. By adopting the scheme, the outer surface of the cylindrical piston is provided with a plurality of spiral flow-disturbing grooves. When polyurethane A and B stoste flow from the inside of rifle body, the spoiler groove of vortex piston can break up stoste flow state effectively for A, B stoste mixes more evenly, has improved the quality and the effect of compounding. Optionally, the piston of vortex piston is the mixed chamber of the rifle body of slope form telescopic link polyurethane foam rifle up, and the terminal surface of the body of rod free end of piston sets up the inclined plane with the vertical looks adaptation of mixed chamber according to its inclination. The design can further optimize the mixing process, better guide the flowing direction of the stock solution and improve the uniformity and quality of the mixed materials. Optionally, still include heating rod, wire and cock cap, be provided with the interior passageway that extends to body of rod free end on the piston axial, be provided with on the disk seat with cock cap looks adaptation screw thread mounting hole, the top of interior passageway is located to the heating rod, the wire links to each other with the heating rod after passing through cock cap and interior passageway in proper order, all be equipped with on piston and the cock cap with wire matched with shutoff. The design can realize heating in the process of mixing and discharging the stock solution, help the stock solution to be mixed better and reach the required temperature, and improve the mixing effect and stability. Meanwhile, the resistance of the stock solution in the flowing process can be reduced in the heating process of the heating rod, and the spiral turbulent flow groove structure of the piston is matched, so that the working efficiency can be improved better, the stability and the quality in the production process are ensured, and more functions and convenience are provided for the use of the polyurethane foaming gun. The beneficial effects of the utility model are as follows: According to the turbulent flow piston structure for the polyureth