A fire retardant impregnation apparatus for foam board

By designing an adjustable constraint mechanism and a hydraulic system for impregnating foam boards with flame retardants, the problem of uneven flame retardant penetration was solved, achieving uniform impregnation and efficient flame retardant effect for the foam boards.

CN224391983UActive Publication Date: 2026-06-23XINZHENG ZHENGDA FOAM PACKING MATERIALS FACTORY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XINZHENG ZHENGDA FOAM PACKING MATERIALS FACTORY
Filing Date
2025-05-22
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing foam board flame retardant impregnation equipment has poor restraint effect, resulting in uneven flame retardant penetration and poor practicality.

Method used

A foam board flame retardant impregnation device was designed, comprising an impregnation tank, a hydraulic cylinder, a telescopic rod, a connecting frame, a guide rod, a sliding sleeve, a tightening screw sleeve, and a constraint frame. Through a hydraulic system and an adjustable constraint mechanism, the foam board is ensured to be uniformly impregnated in the flame retardant.

Benefits of technology

This method achieves uniform flame retardant impregnation of foam boards, improving impregnation efficiency and practicality, and meeting flame retardant rating requirements.

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    Figure CN224391983U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of foam board processing, especially to a kind of flame retardant impregnation equipment of foam board, it is equipped with the adjustable foam board restraint mechanism, it is convenient to adapt to the constraint of foam board specific circumstances, auxiliary completion impregnation, improve practicality;Including impregnation tank, top frame, hydraulic cylinder, telescopic link, connecting frame, side frame, guide rod, sliding sleeve, tight screw, tight screw rod, tight screw hand, connecting frame and restraint frame, the outer side in the bottom end of impregnation tank is connected with the bottom side of top frame, the middle part of top frame inside top end is connected with the bottom end of hydraulic cylinder, and the bottom output end of hydraulic cylinder is movably connected with telescopic link, and the top side middle part of connecting frame is connected with the bottom side of telescopic link, and the inner wall of tight screw is connected with the outer wall of tight screw rod, and the outer side of tight screw rod is connected with the middle part of tight screw hand inner side, and the left and right sides of the top end of a group of restraint frames are connected with connecting frame respectively, and each group of restraint frame is equipped with a group of fixed mechanism.
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Description

Technical Field

[0001] This utility model relates to the technical field of foam board processing, specifically to a flame retardant impregnation device for foam boards. Background Technology

[0002] Foam board, also known as EPS board (expandable polystyrene board), has advantages such as being lightweight, inexpensive, having low thermal conductivity, low water absorption, good electrical insulation, sound insulation, shock absorption, moisture resistance, and simple molding process. Therefore, it is widely used as a thermal insulation, sound insulation, and earthquake resistance material in construction, shipbuilding, automobiles, trains, refrigeration, and freezing industries.

[0003] In some applications, foam boards require flame-retardant properties, necessitating surface flame-retardant processing. Existing equipment, such as the flame-retardant impregnation device for foam boards (patent publication number CN206796594U), utilizes pressure difference technology. This technology solves the problem of flame retardants not penetrating the foam board evenly and completely. It effectively performs continuous impregnation of the foam board, improving impregnation efficiency and effect. It ensures a certain pressure difference between the upper and lower surfaces of the foam board, allowing the flame retardant on the upper surface to penetrate evenly throughout the entire foam board, resulting in uniform flame retardant impregnation and achieving the required flame-retardant rating.

[0004] However, the device is not very effective at restraining instant noodles, making it impractical. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a flame retardant impregnation device for foam boards, which features an adjustable foam board constraint mechanism to facilitate constraint according to the specific conditions of the foam board, assist in impregnation, and improve practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a flame retardant impregnation device for foam board, comprising an impregnation tank, a top frame, a hydraulic cylinder, a telescopic rod, a connecting frame, a side frame, a guide rod, a sliding sleeve, a tightening screw sleeve, a tightening screw, a tightening handle, a connecting frame II, and a constraint frame. The outer side of the bottom end of the impregnation tank is connected to the bottom side of the top frame, and the middle of the top end of the top frame is connected to the bottom end of the hydraulic cylinder. A telescopic rod is movably connected to the bottom output end of the hydraulic cylinder, and the bottom side of the telescopic rod is connected to the middle of the top side of the connecting frame. The left and right sides are respectively connected to the middle of the inner side of a set of side frames. The two sets of side frames are each longitudinally connected to a set of guide rods. The outer wall of each set of guide rods is slidably connected to the inner wall of the two sets of sliding sleeves. The middle of the outer side of each set of sliding sleeves is connected to the inner side of a set of tightening screw sleeves. The inner wall of the tightening screw sleeve is screwed to the outer wall of the tightening screw. The outer side of the tightening screw is connected to the middle of the inner side of the tightening handle. The two sets of sliding sleeves corresponding to each other in the horizontal direction are respectively connected to the top left and right sides of a set of constraint frames through the second connecting frame. Each set of constraint frames is equipped with a set of fixing mechanisms.

[0009] Preferably, the fixing mechanism includes a clamping sleeve, a clamping screw, a screwing disc, and a clamping contact head. The inner side of the top center of each set of constraint frames is connected to the outer side of a set of clamping sleeves. The inner wall of each set of clamping sleeves is screwed to the outer wall of a set of clamping screws. The top of the clamping screw is connected to the middle of the bottom of the screwing disc. The bottom of the clamping screw is movably connected to the top of the clamping contact head.

[0010] Preferably, it also includes a guide hopper, an on / off valve, and a discharge pipe. The bottom of the impregnation tank is connected to the top of the guide hopper, the bottom of the guide hopper is connected to the on / off valve, and the bottom of the on / off valve is connected to the discharge pipe.

[0011] Preferably, it also includes support legs and a fixed seat. The four corners of the bottom of the guide bucket are respectively connected to the top side of a set of support legs, and the bottom sides of the two sets of support legs on the same side are respectively connected to the front and rear parts of the top side of the fixed seat.

[0012] Preferably, it also includes an oil injection nozzle, and the lower front part of the hydraulic cylinder is connected to the inner side of the oil injection nozzle.

[0013] Preferably, it also includes an oil filling cap, wherein the outer side of the oil filling nozzle and the inner side of the oil filling cap are detachably installed.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a flame retardant impregnation device for foam boards, which has the following beneficial effects:

[0016] Flame retardant is placed in the impregnation tank. Initially, the telescopic rod is in the retracted state within the hydraulic cylinder. The connecting frame is positioned at the top. Based on the actual requirements of the foam board to be impregnated, two sets of sliding sleeves corresponding to a set of constraint frames are slid simultaneously on the outside of the guide rod, ensuring a suitable distance between the two sets of constraint frames. By tightening each set of tightening handles, the tightening screw rotates. The tightening screw, through its engagement with the tightening sleeve, acts inward on the outside of the guide rod at that position, fixing the position of the constraint frames. The foam board is then placed within the two sets of constraint frames and secured by the fixing mechanism. Then, the hydraulic cylinder extends the telescopic rod, and the constraint frames constrain the foam board to immerse it in the flame retardant, further completing the impregnation process. An adjustable foam board constraint mechanism is provided to easily adapt to the specific conditions of the foam board, assisting in the impregnation process and improving practicality. Attached Figure Description

[0017] Figure 1 This is an axial view of the structural schematic diagram of this utility model;

[0018] Figure 2 This utility model Figure 1 Rear view;

[0019] Figure 3 This utility model Figure 1 The right view;

[0020] Figure 4 This utility model Figure 1 A magnified view of A.

[0021] The following are labels in the attached diagram: 1. Immersion tank; 2. Top frame; 3. Hydraulic cylinder; 4. Telescopic rod; 5. Connecting frame; 6. Side frame; 7. Guide rod; 8. Sliding sleeve; 9. Tightening sleeve; 10. Tightening screw; 11. Tightening handle; 12. Connecting frame; 13. Constraint frame; 14. Pressing sleeve; 15. Pressing screw; 16. Tightening disc; 17. Pressing contact head; 18. Guide bucket; 19. Opening and closing valve; 20. Discharge pipe; 21. Support leg; 22. Fixed seat; 23. Oil injection nozzle; 24. Oil injection cap. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Please see Figure 1-4A flame retardant impregnation device for foam board includes an impregnation tank 1, a top frame 2, a hydraulic cylinder 3, a telescopic rod 4, a connecting frame 5, a side frame 6, a guide rod 7, a sliding sleeve 8, a tightening screw sleeve 9, a tightening screw 10, a tightening handle 11, a connecting frame 12, and a constraint frame 13. The outer side of the bottom end of the impregnation tank 1 is connected to the bottom side of the top frame 2. The middle part of the top end of the top frame 2 is connected to the bottom end of the hydraulic cylinder 3. The bottom output end of the hydraulic cylinder 3 is movably connected to the telescopic rod 4. The bottom side is connected to the middle of the top side of the connecting frame 5. The left and right sides of the connecting frame 5 are respectively connected to the middle of the inner side of a set of side frames 6. A set of guide rods 7 are longitudinally connected inside the two sets of side frames 6. The outer wall of each set of guide rods 7 is slidably connected to the inner wall of two sets of sliding sleeves 8. The middle of the outer side of each set of sliding sleeves 8 is connected to the inner side of a set of tightening screw sleeves 9. The inner wall of the tightening screw sleeve 9 is screwed to the outer wall of the tightening screw 10. The outer side of the tightening screw 10 is connected to the middle of the inner side of the tightening handle 11. Two sets of sliding sleeves 8 are connected to the top left and right sides of a set of constraint frames 13 via connecting frame 2 12. Each set of constraint frames 13 has a fixing mechanism inside. Flame retardant is placed in the impregnation tank 1. Initially, the telescopic rod 4 is in the retracted state in the hydraulic cylinder 3. The connecting frame 5 is connected to make the whole structure in the upper position. According to the actual needs of the foam board to be impregnated, the two sets of sliding sleeves 8 corresponding to a set of constraint frames 13 are slid simultaneously on the outside of the guide rod 7 to make the two sets of constraint frames 13 spaced at a suitable distance. By turning each set of tightening handles 11, the tightening screw 10 is rotated. The tightening screw 10 is screwed into the tightening sleeve 9 and acts inward to tighten the position on the outside of the guide rod 7, thus fixing the position of the constraint frame 13. The foam board is placed in the two sets of constraint frames 13 and fixed by the fixing mechanism. Then, the hydraulic cylinder 3 acts on the telescopic rod 4 to extend, and the constraint frame 13 constrains the foam board to be impregnated in the flame retardant, further completing the impregnation process.

[0025] The fixing mechanism includes a clamping sleeve 14, a clamping screw 15, a screw pan 16, and a clamping contact head 17. The inner side of the top center of each set of constraint frames 13 is connected to the outer side of a set of clamping sleeves 14. The inner wall of each set of clamping sleeves 14 is screwed to the outer wall of a set of clamping screws 15. The top of the clamping screw 15 is connected to the middle of the bottom of the screw pan 16. The bottom of the clamping screw 15 is movably connected to the top of the clamping contact head 17. When the screw pan 16 is turned, the clamping screw 15 can rotate. The clamping screw 15, after being screwed into the clamping sleeve 14, can connect to the clamping contact head 17 downwards. After contact, it is vertically downwards until it acts on the foam board at that position to tighten it, thereby improving stability.

[0026] It also includes a guide hopper 18, an on / off valve 19, and a discharge pipe 20. The bottom of the impregnation tank 1 is connected to the top of the guide hopper 18. The bottom of the guide hopper 18 is connected to the on / off valve 19, and the bottom of the on / off valve 19 is connected to the discharge pipe 20. The flame retardant can be concentrated at the on / off valve 19 through the guide hopper 18. After the on / off valve 19 is opened, all the flame retardant in the impregnation tank 1 can be discharged through the discharge pipe 20 for easy recycling.

[0027] It also includes support legs 21 and fixed base 22. The four corners of the bottom of the guide bucket 18 are respectively connected to the top side of a set of support legs 21, and the bottom sides of the two sets of support legs 21 on the left and right sides are respectively connected to the front and rear parts of the top side of the fixed base 22. The fixed base 22 is fixed to the ground at the bottom and can be connected to the guide bucket 18 through the support legs 21 to provide overall support and improve stability.

[0028] It also includes an oil injector 23, which is connected to the inner side of the lower front part of the hydraulic cylinder 3; oil can be injected into the inner wall of the hydraulic cylinder 3 through the oil injector 23 for convenient lubrication and maintenance.

[0029] It also includes an oil filling cap 24, and the outer side of the oil filling nozzle 23 and the inner side of the oil filling cap 24 can be detachably installed; after the oil filling cap 24 is installed on the outer side of the oil filling nozzle 23, the inside of the oil filling nozzle 23 can be sealed and protected, improving reliability.

[0030] In summary, when using a flame retardant impregnation device for foam boards, the bottom of the fixed base 22 is fixed to the ground. It can be connected to the guide bucket 18 via the support leg 21 for overall support. The impregnation tank 1 contains flame retardant. Initially, the telescopic rod 4 is in the retracted state within the hydraulic cylinder 3. The connecting frame 5 is used to position the entire device in an upper position. Based on the actual requirements for impregnating the foam board, two sets of sliding sleeves 8 corresponding to a set of constraint frames 13 are slid simultaneously on the outside of the guide rod 7, creating a suitable distance between the two sets of constraint frames 13. By turning each set of tightening handles 11, the tightening screw 10 rotates. The tightening screw 10, after being screwed into the tightening sleeve 9, acts inwardly on the outside of the guide rod 7 at that position, fixing the position of the constraint frame 13, thereby placing the foam board within the two sets of constraint frames 13. Inside the 3, when the screw pan 16 is turned, the clamping screw 15 can rotate. The clamping screw 15 is screwed into the clamping sleeve 14 and can connect to the clamping contact head 17 downward. After contact, it is vertically downward until it acts on the foam board and tightens. Then, the hydraulic cylinder 3 acts on the telescopic rod 4 to extend, and the constraint frame 13 constrains the foam board to be immersed in the flame retardant, further completing the impregnation process. When the guide bucket 18 is used, the flame retardant can be concentrated at the opening and closing valve 19. After the opening and closing valve 19 is opened, all the flame retardant in the impregnation tank 1 can be discharged through the discharge pipe 20 for easy recycling. In addition, oil can be injected into the inner wall of the hydraulic cylinder 3 through the oil injection nozzle 23 for easy lubrication and maintenance. After the oil injection cap 24 is installed on the outside of the oil injection nozzle 23, the inside of the oil injection nozzle 23 can be sealed and protected to improve reliability.

[0031] The hydraulic cylinder 3 and the on / off valve 19 are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, and we will not elaborate further on them here.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flame retardant impregnation apparatus for foam boards, characterized by: The components include an impregnation tank (1), a top frame (2), a hydraulic cylinder (3), a telescopic rod (4), a connecting frame (5), a side frame (6), a guide rod (7), a sliding sleeve (8), a tightening screw sleeve (9), a tightening screw (10), a tightening handle (11), a second connecting frame (12), and a constraint frame (13). The bottom outer side of the impregnation tank (1) is connected to the bottom side of the top frame (2). The top center of the top of the top frame (2) is connected to the bottom of the hydraulic cylinder (3). The bottom output end of the hydraulic cylinder (3) is movably connected to the telescopic rod (4). The bottom side of the telescopic rod (4) is connected to the center of the top side of the connecting frame (5). The left and right sides of the connecting frame (5) are respectively connected to a set of... The inner middle of the side frame (6) is connected. The two sets of side frames (6) are connected longitudinally to a set of guide rods (7). The outer wall of each set of guide rods (7) is slidably connected to the inner wall of the two sets of sliding sleeves (8). The outer middle of each set of sliding sleeves (8) is connected to the inner side of a set of tightening screw sleeves (9). The inner wall of the tightening screw sleeve (9) is screwed to the outer wall of the tightening screw (10). The outer side of the tightening screw (10) is connected to the inner middle of the tightening handle (11). The two sets of sliding sleeves (8) corresponding to each other in the horizontal direction are connected to the top left and right sides of a set of constraint frames (13) through the second connecting frame (12). Each set of constraint frames (13) is equipped with a set of fixing mechanisms.

2. A foam board flame retardant impregnation apparatus according to claim 1, wherein: The fixing mechanism includes a clamping sleeve (14), a clamping screw (15), a screw plate (16), and a clamping contact head (17). The inner side of the top center of each set of constraint frames (13) is connected to the outer side of a set of clamping sleeves (14). The inner wall of each set of clamping sleeves (14) is screwed to the outer wall of a set of clamping screws (15). The top of the clamping screw (15) is connected to the middle of the bottom of the screw plate (16). The bottom of the clamping screw (15) is movably connected to the top of the clamping contact head (17).

3. The flame retardant impregnation equipment for foam boards according to claim 1, characterized in that: It also includes a guide bucket (18), an on / off valve (19) and a discharge pipe (20). The bottom of the impregnation tank (1) is connected to the top of the guide bucket (18), the bottom of the guide bucket (18) is connected to the on / off valve (19), and the bottom of the on / off valve (19) is connected to the discharge pipe (20).

4. The flame retardant impregnation equipment for foam boards according to claim 3, characterized in that: It also includes support legs (21) and fixed base (22). The four corners of the bottom end of the guide bucket (18) are respectively connected to the top side of a set of support legs (21), and the bottom sides of the two sets of support legs (21) on the same left and right sides are respectively connected to the front and rear parts of the top side of the fixed base (22).

5. The flame retardant impregnation equipment for foam boards according to claim 1, characterized in that: It also includes an oil injection nozzle (23), the lower front part of the hydraulic cylinder (3) is connected to the inner side of the oil injection nozzle (23).

6. The flame retardant impregnation equipment for foam board according to claim 5, characterized in that: It also includes an oil filling cap (24), the outer side of the oil filling nozzle (23) and the inner side of the oil filling cap (24) can be detachably installed.