Polyurethane foam mixing head drying mechanism

Abstract

The present invention provides a polyurethane foam mixing head drying mechanism; it includes a drying base, a support and a heating component; the upper end surface of the drying base is provided with a drying groove for accommodating the lower part of the polyurethane foam mixing head, a drying hole is provided in the drying base, one end of the drying hole extends to the bottom of the drying groove, and the other end of the drying hole is connected to an external air source, the support is arranged in the drying groove, the upper end surface of the support is in contact with the bottom of the mixing core of the polyurethane foam mixing head, the heating component is arranged in the drying groove of the drying base, the heating component includes at least one heating tube and a plurality of heating brackets, and the heating tube is fixed to the wall of the drying groove through a plurality of heating brackets. The beneficial technical effects of the drying mechanism are: reasonable structure, easy to use, designed for the polyurethane foam mixing head, avoiding residual water in the mixing head after cleaning, and improving the cleaning efficiency of the polyurethane foam mixing head.

Description

Technical Field

[0001] The invention relates to a polyurethane foaming mixing head drying mechanism. Background Art

[0002] Polyurethane waste regeneration technology completes the regeneration operation by processing polyurethane waste into powder or granules. It needs to use a polyurethane foam mixing head to complete the material processing into powder or granules for transportation and spraying. However, since the mixing core of the polyurethane foam mixing head is a special-shaped structure, there will be residual material left on the mixing core after the polyurethane foam mixing head sprays the material.

[0003] The Chinese patent with application number: CN201910001212.4 discloses a "polyurethane waste regeneration device", including a storage tank and a metering mechanism, wherein a material level sensor is installed on the outer wall of the storage tank, and a sealing shaft is arranged at the lower part of the storage tank, the metering mechanism is arranged at the bottom of the storage tank, and a feeding funnel is arranged at the bottom of the metering mechanism. It also discloses a structure of "a piston rod is arranged through the inner side of the metering bracket, a solid addition port is arranged inside the piston rod, a cylinder is arranged in the middle part of the outer side of the piston rod, a cylinder cover is arranged at both the upper and lower ends of the cylinder, and a cylinder piston is arranged in the middle part of the inner side of the cylinder". Its main purpose is to extend the mixing core component at the lower end of the mixing head out of the lower side of the seat for easy cleaning. However, after cleaning, it is necessary to wait for the water on the surface of the mixing head to completely evaporate before the mixing and spraying operation can be carried out again. The waiting time is too long, which affects the production efficiency; and it is easy to cause residual water droplets in the mixing head, which affects the subsequent spraying quality. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a polyurethane foaming mixing head drying mechanism which has a reasonable structure and is convenient to use.

[0005] In order to solve the above technical problems, the present invention provides a polyurethane foaming mixing head drying mechanism;

[0006] It includes a drying base, a support table and a heating component;

[0007] A drying groove for accommodating the lower part of the polyurethane foam mixing head is formed on the upper end surface of the drying base, a drying hole is formed in the drying base, one end of the drying hole extends to the bottom of the drying groove, and the other end of the drying hole is connected to an external air source. A support is arranged in the drying groove, and the upper end surface of the support is in contact with the bottom of the mixing core of the polyurethane foam mixing head. The heating component is arranged in the drying groove of the drying base, and the heating component includes at least one heating tube and a plurality of heating brackets. The heating tube is fixed to the wall of the drying groove through a plurality of heating brackets.

[0008] In order to more clearly understand the technical content of the present invention, the polyurethane foaming mixing head drying mechanism is referred to as the drying mechanism below.

[0009] As a preferred embodiment of the drying mechanism, a limiting boss is extended from the lower end surface of the support platform, a buffer spring is mounted on the outside of the limiting boss, a limiting ring platform matching with the buffer spring is extended upward from the bottom wall of the drying groove, the buffer spring is placed in the inner hole of the limiting ring platform, the upper end of the buffer spring abuts against the lower end surface of the support platform, the upper end of the buffer spring abuts against the bottom wall of the drying groove, and there is a gap between the lower end surface of the support platform and the upper end surface of the limiting ring platform.

[0010] As a preferred embodiment of the drying mechanism, an asbestos cushion layer is provided on the upper end surface of the drying base.

[0011] As a preferred embodiment of the drying mechanism, a polyurethane cushion layer is provided on the upper end surface of the support platform.

[0012] As a preferred embodiment of the drying mechanism, the drying hole includes a main hole and a plurality of auxiliary holes, one end of the main hole extends to the lower end surface of the drying base, the other end of the main hole terminates in the drying base and one end of the auxiliary hole is connected, the other end of the auxiliary hole extends to the bottom of the drying groove, the plurality of auxiliary holes are evenly distributed in a circle along the center line of the drying groove, and the plurality of auxiliary holes are aligned with the heating tube.

[0013] After adopting such a structure, external air enters the drying groove from the drying hole and is heated by the heating tube to become hot air. The hot air can only enter the feed pipe through the injection hole of the polyurethane foam mixing head, which can thoroughly dry the feed pipe and mixing core of the polyurethane foam mixing head.

[0014] The beneficial technical effects of the drying mechanism are: reasonable structure, easy use, and designed for the polyurethane foam mixing head to avoid residual water in the mixing head after cleaning, thereby improving the cleaning efficiency of the polyurethane foam mixing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of an embodiment of the drying mechanism.

[0016] Figure 2 It is a sectional view of the front view of the drying mechanism embodiment.

[0017] Figure 3 It is a stereoscopic diagram of the drying mechanism and the polyurethane waste regeneration device in the embodiment in use.

[0018] Figure 4 It is a sectional view of the main view of the drying mechanism and the polyurethane waste regeneration device in the embodiment in use. DETAILED DESCRIPTION

[0019] like Figures 1 to 4 Shown

[0020] The drying mechanism comprises a drying base 11, a support platform 12 and a heating component.

[0021] A drying groove 11a for accommodating the lower part of the mixing head of the polyurethane waste regeneration device is formed on the upper end surface of the drying base 11. An asbestos cushion layer (not shown in the figure) is provided on the upper end surface of the drying base 11. A drying hole is formed in the lower part of the drying base 11. The drying hole includes a main hole 11b and three auxiliary holes 11c. The lower end of the main hole 11b extends to the lower end surface of the drying base 11. The upper end of the main hole 11b terminates in the drying base 11 and is connected to one end of the auxiliary hole 11c. The other end of the auxiliary hole 11c extends to the bottom of the drying groove 11a. The three auxiliary holes 11c are evenly distributed circumferentially along the center line of the drying groove 11a. The three auxiliary holes 11c are aligned with the heating tube 13b, and the main hole 11b is connected to an external air source.

[0022] The support platform 12 is arranged in the drying groove 11a, and a polyurethane cushion layer (not shown in the figure) is provided on the upper end surface of the support platform 12. The polyurethane cushion layer contacts the bottom of the mixing core 23 of the polyurethane waste regeneration device. A limiting boss 12a is extended from the lower end surface of the support platform 12, and a buffer spring 12b is mounted on the outer side of the limiting boss 12a. A limiting ring 11d that cooperates with the buffer spring 12b is extended upward from the bottom wall of the drying groove 11a. The buffer spring 12b is placed in the inner hole of the limiting ring 11d, and the upper end of the buffer spring 12b abuts against the lower end surface of the support platform 12. The upper end of the buffer spring 12b abuts against the bottom wall of the drying groove 11a, and there is a gap between the lower end surface of the support platform 12 and the upper end surface of the limiting ring 11d.

[0023] The heating assembly is arranged in the drying groove 11a of the drying base 11, and the heating assembly includes two heating tubes 13b and three heating brackets 13a. The two heating tubes 13b are fixed to the wall of the drying groove 11a through the three heating brackets 13a, and the two heating tubes 13b are arranged up and down in sequence.

[0024] The specific structure of the polyurethane waste regeneration device coordinated with the drying mechanism is introduced below. The polyurethane waste regeneration device includes a mixing head, a glass fiber shear 4, a connecting flange 3 and a glass fiber conveyor 5, wherein the mixing head includes a feed pipe 21, a mixing seat body 22, a mixing core 23 and a telescopic cylinder 24. The mixing seat body 22 also has an inner hole running through its upper and lower end faces. The lower end of the feed pipe 21 extends into the inner hole of the mixing seat body 22. The telescopic cylinder 24 is fixed on the upper side of the mixing seat body 22. A cavity is provided in the telescopic cylinder 24. The feed pipe 21 on the upper side of the mixing seat body 22 runs through the telescopic cylinder 24. A piston 25 is fixedly connected to the outer wall of the feed pipe 21 in the cavity of the telescopic cylinder 24. The piston 25 divides the cavity of the telescopic cylinder 24 into two independent oil chambers. The telescopic cylinder 24 is respectively provided with oil holes connected to the two independent oil chambers. The mixing core 23 is fixed to the lower end of the feeding pipe 21 by threaded connection. The lower end of the inner hole of the mixing core 23 is an injection port. The outer wall of the mixing core 23 is provided with an annular groove. The lower part of the mixing core 23 is provided with multiple injection ports.

[0025] The lower end outlet of the glass fiber shear 4 is connected to the inlet of the glass fiber conveyor 5 , and the glass fiber conveyor 5 is connected to the telescopic cylinder 24 of the mixing head through a connecting flange 3 , and two exhaust holes 31 are formed on the side wall of the connecting flange 3 .

[0026] When the piston 25 drives the feed pipe 21 to move upward to the maximum stroke position, the upper end surface of the feed pipe 21 abuts against the outlet of the glass fiber conveyor 5, and the side wall of the feed pipe 21 closes the two exhaust holes 31 on the side wall of the connecting flange 3. The glass fiber shearer 4 can chop the glass fiber raw material (glass fiber raw material), and the glass fiber conveyor 5 directly inputs the chopped glass fiber raw material into the feed pipe 21. At this time, the mixing core 23 of the mixing head is in the mixing seat body 22, and the polyurethane waste regeneration device is in working condition.

[0027] After the working state is finished, when the piston 25 drives the feed pipe 21 to move downward to the maximum stroke position, the lower part of the feed pipe 21 and the mixing core 23 extend out of the lower side of the mixing seat body 22, and the two exhaust holes 31 on the side wall of the connecting flange 3 are opened. The inner hole of the feed pipe 21 is connected to the outside through the two exhaust holes 31 on the side wall of the connecting flange 3. At this time, the polyurethane waste regeneration device is in a cleaning state, and the residual material on the surface of the mixing core 23 and the inner wall of the feed pipe 21 can be cleaned.

[0028] After cleaning the bottom of the mixing head, the lower end of the mixing head extends into the drying groove 11a of the drying mechanism, the mixing core 23 of the mixing head contacts the polyurethane cushion layer of the support 12, and the bottom of the mixing seat body 22 of the polyurethane waste regeneration device abuts against the asbestos cushion layer of the drying base 11, so that the polyurethane waste regeneration device is closed relative to the drying mechanism;

[0029] External air enters the drying groove 11a from the drying hole and is heated by the heating tube 13b to become hot air. The hot air can only enter the delivery pipe 21 through the injection hole of the mixing core 23, and is finally discharged from the two exhaust holes 31 of the connecting flange 3, which can completely dry the delivery pipe 21 and the mixing core 23 of the mixing head.

[0030] The above is only one embodiment of the present invention. It should be pointed out that a person skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A polyurethane foaming mixing head drying mechanism, characterized by: It includes a drying base, a support table and a heating component; The upper end surface of the drying base is provided with a drying groove for accommodating the lower part of the polyurethane foam mixing head, a drying hole is provided in the drying base, one end of the drying hole extends to the bottom of the drying groove, and the other end of the drying hole is connected to an external air source, a support is arranged in the drying groove, and the upper end surface of the support is in contact with the bottom of the mixing core of the polyurethane foam mixing head, the heating component is arranged in the drying groove of the drying base, the heating component includes at least one heating tube and a plurality of heating brackets, and the heating tube is fixed to the wall of the drying groove through a plurality of heating brackets; A limiting boss is extended from the lower end surface of the support platform, a buffer spring is sleeved on the outer side of the limiting boss, a limiting ring platform matching with the buffer spring is extended upward from the bottom wall of the drying groove, the buffer spring is placed in the inner hole of the limiting ring platform, the upper end of the buffer spring abuts against the lower end surface of the support platform, the upper end of the buffer spring abuts against the bottom wall of the drying groove, and there is a gap between the lower end surface of the support platform and the upper end surface of the limiting ring platform; An asbestos cushion is provided on the upper end surface of the drying base; The upper end surface of the support platform is provided with a polyurethane cushion layer; The drying hole includes a main hole and several auxiliary holes. One end of the main hole extends to the lower end surface of the drying base, the other end of the main hole terminates in the drying base and is connected with one end of the auxiliary hole, and the other end of the auxiliary hole extends to the bottom of the drying groove. Several auxiliary holes are evenly distributed along the center line of the drying groove, and several auxiliary holes are aligned with the heating tube.

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