Steel fire door gap and door frame post-grouting device and method for post-grouting behind the door gap

Abstract

The present invention discloses a post-grouting device for steel fireproof door gaps and door frames and a post-grouting method for door gaps, comprising: a spray pipe, the spray pipe having a closed end and an open end, a gripping portion formed on the closed end, a feed port formed on the side wall of the closed end away from the gripping portion; a storage hopper for accommodating slurry, a discharge port of the storage hopper connected to the feed port; an impeller for pressurizing and pushing the slurry to the open end, rotatably installed in the spray pipe, the impeller and the feed port being arranged oppositely; a driving motor, installed at the closed end and transmission-connected to the impeller; a pressurizing nozzle, the pressurizing nozzle having a large mouth end and a small mouth end, the large mouth end being detachably installed at the open end, the opening of the small mouth end being circular or strip-shaped, and the inner diameter of the opening being smaller than the inner diameter of the large mouth end. The present invention solves the problem that the existing steel fireproof door and wall gaps are filled with non-combustible materials, which is prone to loose filling and low construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a grouting device for the gap between the door leaf and the door frame of a steel fire door and the back of the door frame, and a method for grouting the back of the door leaf gap. Background Art

[0002] After the door frame of a steel fire door is fixed to the surrounding wall, the sealing of the gap between it and the wall structure, as well as the filling of non-combustible materials in the door frame cavity, directly affect the installation quality and fire resistance performance of the fire door, and play a crucial role in preventing the spread of fire and smoke.

[0003] For the sealing or filling of the above parts, a trowel is generally used to fill the gap. Due to the characteristics of the tool itself, the traditional construction method is inconvenient to operate. The phenomenon of incomplete filling inside the gap is quite common, and the construction efficiency is low, and it is also easy to contaminate the fire door frame.

[0004] The information disclosed in this background art section is only for enhancing the overall understanding of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] To overcome the defects existing in the prior art, the present invention provides a grouting device for the gap between the door leaf and the door frame of a steel fire door and the back of the door frame, and a method for grouting the back of the door leaf gap, so as to solve the problems of easy incomplete filling and low construction efficiency when filling non-combustible materials in the gap between the existing steel fire door and the wall.

[0006] To achieve the above object, a grouting device for the gap between the door leaf and the door frame of a steel fire door is provided, including:

[0007] A spraying pipe, the spraying pipe has a closed end and an open end, a holding part is formed at the closed end, and a feeding port is opened on the side wall of the closed end away from the holding part;

[0008] A storage hopper for accommodating the slurry, the discharging port of the storage hopper is connected to the feeding port;

[0009] An impeller for pressurizing and pushing the slurry to the open end, rotatably installed in the spraying pipe, and the impeller is disposed opposite to the feeding port;

[0010] A driving motor, installed at the closed end and drivingly connected to the impeller;

[0011] A pressurizing nozzle, the pressurizing nozzle has a large end and a small end, the large end is detachably installed at the open end, the opening of the small end is circular or strip-shaped, and the inner diameter of the opening is smaller than the inner diameter of the large end.

[0012] Further, shaft holes are formed in opposite side walls of the closed end. A wheel shaft is coaxially installed on the impeller. Both ends of the wheel shaft are rotatably inserted into the shaft holes in the two side walls, and the output shaft of the drive motor is coaxially connected to the wheel shaft.

[0013] Further, an external thread is formed at the large-mouth end, and an internal thread is formed at the open end. The open end is threadedly connected to the large-mouth end.

[0014] Further, it further includes a scraping wall plate. The spraying pipe is a square pipe. The shape and size of the scraping wall plate are adapted to the shape and size of the cross-section of the inner cavity of the square pipe. A through socket is formed in one side wall in the width direction of the spraying pipe. Guide grooves are formed along the axial direction of the spraying pipe on the inner sides of opposite side walls in the thickness direction of the spraying pipe. The lower end of the scraping wall plate is adjustably embedded in the socket. Earmuffs are formed on both sides of the scraping wall plate. Thrust members are installed on the two side walls. After grouting, the scraping wall plate is pushed into the inner cavity of the spraying pipe so that one side of the earmuff is aligned with the guide groove and the other side of the earmuff is aligned with the thrust member. The thrust member pushes the earmuff in the direction towards the open end to make the earmuff slide along the length direction of the guide groove, thereby enabling the scraping wall plate to scrape the slurry adhering to the inner side of the side wall of the spraying pipe.

[0015] Further, the thrust member is an electric hydraulic push rod.

[0016] Further, a first magnetic attracting member is connected to the telescopic end of the electric hydraulic push rod, and a second magnetic attracting member for magnetically attracting to the first magnetic attracting member is connected to the other side of the earmuff.

[0017] Further, a third magnetic attracting member is provided on the outer wall of the storage hopper, and a fourth magnetic attracting member is fixedly provided on the upper part of the scraping wall plate. The fourth magnetic attracting member is magnetically attracted to the third magnetic attracting member.

[0018] Further, the shape and size of the earmuff are adapted to the cross-sectional shape and size of the guide groove.

[0019] The present invention provides a method for post-grouting of the door gap using a post-grouting device for the door gap and door frame of a steel fire door, including the following steps:

[0020] Place the slurry in the storage hopper;

[0021] Detachably install a pressure-increasing nozzle with a strip-shaped opening at the small-mouth end on the open end of the spraying pipe;

[0022] Align the strip-shaped opening with the door gap between the steel fire door and the wall;

[0023] Turning on the driving motor to drive the impeller to rotate, the impeller pressurizes and pushes the slurry to the opening end and quickly pours it into the door gap through the strip-shaped opening of the pressurizing nozzle;

[0024] The booster nozzle with a circular opening at the small opening end is detachably mounted on the open end of the spray pipe to replace the booster nozzle with a strip opening;

[0025] The circular opening is aligned with the position of the door gap that is not densely filled, and the drive motor is turned on to densely fill the door gap through secondary pouring of slurry.

[0026] The beneficial effects of the present invention are that the grouting device for the door seam and door frame of the steel fire door of the present invention is simple to operate, the gap filling (or cavity filling) is dense, and the construction quality is good, which improves the grouting efficiency and grouting filling quality of the door seam of the steel fire door, reduces the construction cost, has strong practicality, and is easy to clean after the construction is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 The present invention is a schematic structural diagram of a rear grouting device for a steel fire door gap and door frame according to an embodiment of the present invention.

[0029] Figure 2 It is a cross-sectional view of a steel fire door gap and door frame rear grouting device according to an embodiment of the present invention.

[0030] Figure 3 It is a cross-sectional view of a spray pipe according to an embodiment of the present invention.

[0031] Figure 4 for Figure 3 Cross-sectional view at AA in .

[0032] Figure 5 It is a schematic structural diagram of a scraper plate according to an embodiment of the present invention.

[0033] Figure 6 It is a schematic diagram of the initial state of the scraper plate according to an embodiment of the present invention.

[0034] Figure 7 It is a schematic structural diagram of a boost nozzle with a strip opening according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Reference Figures 1 to 7 As shown, the present invention provides a steel fire door gap and door frame rear grouting device, including: a spraying pipe 1, a storage hopper 2, an impeller 3, and a driving motor 4.

[0038] In this embodiment, the spray pipe 1 is tubular, and the preferred spray pipe is a square pipe. The spray pipe 1 has a closed end and an open end. One end of the spray pipe 1 is closed, and the other end of the spray pipe 1 is open. The spray pipe 1 is arranged in a horizontal direction. A gripping portion 11 is formed at the closed end of the spray pipe 1. The gripping portion is arranged on the outer side of the bottom side wall of the spray pipe. A feed port c is provided on the side wall of the closed end of the spray pipe 1 away from the gripping portion 11. The feed port is arranged on the upper side wall of the spray pipe.

[0039] The discharge port of the storage hopper 2 is connected to the feed port. The storage hopper 2 is used to contain slurry.

[0040] The impeller 3 is rotatably mounted in the spray pipe 1. The impeller 3 is arranged opposite to the feed port. The impeller 3 is used to pressurize the slurry and push it to the open end of the spray pipe.

[0041] The driving motor 4 is installed at the closed end and is drivingly connected to the impeller 3 .

[0042] The boost nozzle 5 has a large opening end and a small opening end. The large opening end can be detachably mounted on the opening end. The opening of the small opening end is circular or strip-shaped, and the inner diameter of the opening is smaller than the inner diameter of the large opening end. In this embodiment, there are multiple boost nozzles 5. The inner diameters of the openings of the small opening ends of the multiple boost nozzles are different. Figure 1 As shown, the opening of the small mouth end of the boost nozzle is circular; Figure 7 As shown, the opening of the small mouth end of the boost nozzle is in a strip shape. The slurry discharge per unit time of the circular opening is smaller than the slurry discharge per unit time of the strip-shaped opening.

[0043] The booster nozzle with a strip opening is used to quickly fill the gap of the steel fire door; while the booster nozzle with a circular opening is used for secondary filling of the gap of the steel fire door to ensure that the gap of the steel fire door is filled densely.

[0044] Preferably, the large opening end of the boosting nozzle is round. The large opening end of the boosting nozzle is formed with an external thread. The open end of the spray pipe is formed with an internal thread. The open end of the spray pipe is threadedly connected to the large opening end of the boosting nozzle.

[0045] As a preferred embodiment, the closed end of the spray pipe 1 is provided with axial holes on the opposite side walls in the thickness direction. The impeller 3 is coaxially mounted with a wheel axle. Both ends of the wheel axle are rotatably inserted into the axial holes on the side walls. The output shaft of the drive motor 4 is coaxially connected to the wheel axle.

[0046] The steel fireproof door gap and door frame rear grouting device of the present invention further comprises a scraper plate 6 .

[0047] Specifically, the spray pipe 1 is a square tube. The shape and size of the scraper plate 6 are adapted to the shape and size of the cross section of the inner cavity of the square tube. A through-hole a is provided on one side wall in the width direction of the spray pipe 1. Guide grooves b arranged along the axial direction of the spray pipe 1 are formed on the inner sides of the two opposite side walls in the thickness direction of the spray pipe 1. The lower end position of the scraper plate 6 is adjustably embedded in the hole a. Ear plates 61 are formed on both sides of the scraper plate 6. Pushing members 62 are installed on both side walls.

[0048] After grouting the door seams of steel fire doors, refer to Figure 6 In the state shown, the scraper plate 6 is pushed downward into the inner cavity of the spray pipe 1 so that one side of the ear plate 61 is aligned with the guide groove b, and the other side of the ear plate 61 is aligned with the push piece 62. The push piece 62 pushes the ear plate 61 toward the direction of the open end so that the ear plate 61 slides along the length direction of the guide groove b. Since the shape and size of the scraper plate are adapted to the shape and size of the cross section of the inner cavity of the spray pipe, the scraper plate 6 scrapes off the slurry attached to the inner side of the side wall of the spray pipe 1. The scraper plate, on the one hand, can prevent the slurry from adhering to the inner wall of the spray pipe and reduce the waste of slurry; on the other hand, the scraper plate scrapes off the slurry, cleans the inner wall of the spray pipe, and avoids the use of a large amount of clean water for cleaning, and the sewage mixed with slurry pollutes the environment.

[0049] As a preferred embodiment, the push member 62 is an electric hydraulic push rod. The electric hydraulic push rod is arranged along the axial direction of the spray pipe. The electric hydraulic push rod has a fixed end and a telescopic end. The fixed end of the electric hydraulic push rod is arranged toward the closed end of the spray pipe, and the telescopic end of the electric hydraulic push rod is arranged toward the open end of the spray pipe.

[0050] In this embodiment, the telescopic end of the electric hydraulic push rod is connected to a first magnetic attraction member. The other side of the ear plate 61 is connected to a second magnetic attraction member for magnetically adsorbing to the first magnetic attraction member. The shape and size of the ear plate 61 are adapted to the cross-sectional shape and size of the guide groove b.

[0051] Continue reading Figure 6 As shown, the outer wall of the storage hopper 2 is provided with a third magnetic attraction member 21. The upper part of the scraper plate 6 is fixedly provided with a fourth magnetic attraction member. The fourth magnetic attraction member is magnetically attracted to the third magnetic attraction member 21.

[0052] The present invention provides a door gap post-grouting method using a steel fireproof door door gap and door frame post-grouting device, comprising the following steps:

[0053] S1: Place the slurry in the storage hopper 2.

[0054] S2: The booster nozzle 5 with a strip-shaped opening at the small opening end is detachably mounted on the opening end of the spray pipe 1.

[0055] S3: Align the strip opening with the gap between the steel fire door and the wall.

[0056] S4: Turn on the driving motor 4 to drive the impeller 3 to rotate. The impeller 3 pressurizes and pushes the slurry to the open end and quickly pours it into the door gap through the strip-shaped opening of the pressurizing nozzle 5.

[0057] S5: The booster nozzle 5 with a circular opening at the small-mouth end is detachably mounted on the open end of the spray pipe 1 to replace the booster nozzle 5 with a strip-shaped opening.

[0058] S6: Align the circular opening to the position of the door gap that is not densely filled, and start the drive motor 4 to densely fill the door gap through secondary pouring of slurry.

[0059] The steel fire door seam and door frame rear grouting device of the present invention is simple to operate, can fill the gap (or cavity) densely, and has good construction quality, thereby improving the steel fire door seam grouting efficiency and grouting filling quality, reducing construction costs, having strong practicality, and being easy to clean after construction is completed.

[0060] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A steel fire door door seam and door frame rear grouting device, characterized in that: include: A spray pipe, the spray pipe having a closed end and an open end, the closed end is formed with a gripping portion, and a side wall of the closed end away from the gripping portion is provided with a feed port; A storage hopper for accommodating slurry, wherein a discharge port of the storage hopper is connected to the feed port; An impeller for pressurizing and pushing the slurry to the open end is rotatably installed in the spray pipe, and the impeller is arranged opposite to the feed port; A driving motor is mounted on the closed end and is drivingly connected to the impeller; A booster nozzle, the booster nozzle having a large opening end and a small opening end, the large opening end being detachably mounted on the opening end, the opening of the small opening end being circular or strip-shaped, and the inner diameter of the opening being smaller than the inner diameter of the large opening end; The nozzle is provided with a through hole, and the inner sides of the two opposite side walls in the thickness direction of the nozzle are provided with guide grooves arranged along the axial direction of the nozzle. The lower end position of the scraper plate is adjustably embedded in the hole, and ear plates are formed on both sides of the scraper plate. Pushing pieces are installed on the two side walls. After grouting, the scraper plate is pushed into the inner cavity of the nozzle to align one side of the ear plate with the guide groove and the other side of the ear plate with the pushing piece. The pushing piece pushes the ear plate toward the open end to make the ear plate slide along the length direction of the guide groove, so that the scraper plate scrapes off the slurry attached to the inner side of the side wall of the nozzle.

2. The grouting device for the gap between the steel fire door and the door frame according to claim 1, characterized in that, The two opposite side walls of the closed end are provided with shaft holes, the impeller is coaxially mounted with a wheel shaft, both ends of the wheel shaft are rotatably inserted into the shaft holes of the two side walls, and the output shaft of the drive motor is coaxially connected to the wheel shaft.

3. The steel fire door gap and door frame rear grouting device according to claim 1, characterized in that: The large mouth end is formed with an external thread, the open end is formed with an internal thread, and the open end is threadedly connected to the large mouth end.

4. The steel fire door gap and door frame rear grouting device according to claim 1, characterized in that: The pushing member is an electric hydraulic push rod.

5. The steel fire door gap and door frame rear grouting device according to claim 4, characterized in that: The telescopic end of the electric hydraulic push rod is connected to a first magnetic attraction component, and the other side of the ear plate is connected to a second magnetic attraction component for magnetically adsorbing to the first magnetic attraction component.

6. The grouting device for the gap between the steel fire door and the door frame according to claim 1, characterized in that, The outer wall of the storage hopper is provided with a third magnetic attraction component, and the upper part of the scraper plate is fixedly provided with a fourth magnetic attraction component, and the fourth magnetic attraction component is magnetically adsorbed to the third magnetic attraction component.

7. The steel fire door gap and door frame rear grouting device according to claim 1, characterized in that: The shape and size of the lug plate are adapted to the cross-sectional shape and size of the guide groove.

8. A method for post-grouting of the door gap of a steel fire door using the post-grouting device for the door gap and the door frame as described in any one of claims 1 to 7, characterized in that, The following steps are involved: The slurry is placed in a storage hopper; A booster nozzle with a strip-shaped opening at the small opening end is detachably mounted on the opening end of the spray pipe; Align the strip opening with the gap between the steel fire door and the wall; Turning on the driving motor to drive the impeller to rotate, the impeller pressurizes and pushes the slurry to the opening end and quickly pours it into the door gap through the strip-shaped opening of the pressurizing nozzle; The booster nozzle with a circular opening at the small opening end is detachably mounted on the open end of the spray pipe to replace the booster nozzle with a strip opening; Align the circular opening with the unfilled and compacted position in the door gap, and turn on the drive motor to densely fill the door gap through secondary perfusion of the slurry.

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