Wooden indoor fireproof door

Abstract

The invention belongs to the technical field of fireproof doors, and relates to a wooden indoor fireproof door which comprises a door frame and a frame installed on the inner ring of the door frame. A spraying pipe is connected to the door frame, and spraying holes are formed in the lower portion of the spraying pipe; a baffle suitable for being blocked between the spraying holes and the water conveying pipe is arranged in the middle of the spraying pipe in a sliding mode, a connecting spring is connected between the baffle and the frame, a connecting frame is connected to one side of the baffle, a shifting rod is arranged on the frame in a rotating mode, and a protruding part sliding on the connecting frame protrudes out of the upper end of the shifting rod. The upper side of the door plate is connected with a push block suitable for extruding the protruding part of the shifting rod. When the door plate is closed, water liquid is automatically sprayed to improve smoke sealing, reduce smoke permeability and take away heat on the surface of the door plate to reduce temperature, the door plate is convenient to open, door closing buffering is ingeniously achieved through the connecting spring, and when the door plate is opened, water liquid spraying is automatically stopped, and water liquid is prevented from being sprayed to the body of a person.

Description

Technical Field

[0001] The invention belongs to the technical field of fireproof doors, and in particular relates to a wooden indoor fireproof door. Background Art

[0002] Wooden interior fire doors are special doors that combine the natural beauty of wood with fire safety properties. They are usually made of specially treated wood or wood products that meet certain fire resistance requirements while preventing the spread of flames for a certain period of time and maintaining structural integrity during a fire.

[0003] At present, conventional fire doors are divided into normally open fire doors and normally closed fire doors. Normally open fire doors are mainly installed in places with a large flow of people, such as stairwells, evacuation passages, and elevator vestibules; normally closed fire doors are mainly installed in places with fewer people, such as equipment rooms and pump rooms; the opening direction of fire doors is generally towards the evacuation direction.

[0004] In a fire, high temperature flames and the smoke produced are one of the causes of casualties. Although the fire doors in the prior art can achieve a certain degree of fire protection and sealing, smoke can still easily spread through the door gaps, and the surface of the fire door can also affect people's use due to the high temperature of the flame.

[0005] In view of the shortcomings of the above-mentioned prior art, a wooden indoor fire door is designed to overcome the shortcomings of the prior art and to spray water on the surface of the door panel during a fire without spraying the water onto the users, thereby increasing the fire prevention and sealing effects. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a wooden indoor fireproof door which can spray water on the surface of the door panel during a fire and avoid the water from affecting people, and has good fireproofing and sealing effects.

[0007] In order to solve the above technical problems, the present invention provides a wooden indoor fireproof door, comprising a door frame and a frame installed between four side edges of the upper, lower, left and right inner circle of the door frame, a door panel is hinged on one side of the frame through a hinge, the surface of the door panel has a fireproof layer, a door lock is installed on the door panel, the door lock is switched and the door panel on the frame is pushed and pulled, a door closing module is provided between the door panel and the door frame, the door closing module fixes the opened door panel to a specific position for people to pass through the door frame, or in case of fire, the door closing module receives a signal from a control room to automatically close the door panel; a seal away from the hinge is connected to one side of the frame, the seal increases the sealing between the door panel and the frame when the door panel is closed, a spray pipe located above the seal is connected to the upper part of the door frame, the lower part of the spray pipe has a plurality of spray holes facing the seal, the upper part of the spray pipe has a water delivery pipe, the water delivery pipe delivers external water to the spray pipe, and the spray holes on the spray pipe can spray water The water in the spray pipe is sprayed between the seal and the seal; a baffle is slidably provided in the middle part of the spray pipe to block between the spray hole and the water pipe, and a connecting spring is connected between the right side of the baffle and the frame, and the baffle is blocked between the spray hole and the water pipe by the restoring force of the connecting spring. At this time, the water delivered to the spray pipe by the water pipe cannot be sprayed out from the spray hole, and a connecting frame is connected to one side of the baffle. The upper part of the frame is rotated to have a lever for toggling the connecting frame, and the upper end of the lever protrudes with a protrusion that slides on the connecting frame, and a push block suitable for squeezing the protrusion of the lever is connected to the upper side of the door panel. When the door panel is opened, the baffle is blocked between the spray hole and the water pipe, and personnel can pass through the door frame normally. When a fire occurs, when the door panel is closed to the seal on the frame, the door panel will drive the push block to squeeze the lower end of the lever, and the protrusion on the upper end of the lever will drive the baffle to move forward from between the spray hole and the water pipe through the connecting frame, and the connecting spring will deform.

[0008] Preferably, a roller for reducing friction is also included. The push block is provided with a rotating roller, and the roller replaces the push block to squeeze the protruding part of the lever, thereby reducing the loss caused by hard friction.

[0009] Preferably, the door closing module includes a guide rail connected to the upper front side of the door frame, a slider slides on the guide rail, a mechanical door closer is installed on the upper right side of the door panel, the arm of the mechanical door closer is rotatably arranged between the mechanical door closer and the slider, and a limit assembly for fixing the arm is provided on the upper left side of the door panel.

[0010] Preferably, the limit assembly includes a limit frame connected to the left side of the upper part of the door panel, the upper part of the limit frame is provided with a plurality of limit slots, a sliding frame is slidably provided on the arm rod of the mechanical door closer, a compression spring 1 surrounding the sliding frame is connected between the sliding frame and the arm rod, the compression spring 1 is used for resetting the sliding frame, a resistance rod suitable for abutting against the limit slot is slidably provided on the left end portion of the sliding frame, the resistance rod is inserted into the limit slot at the rearmost end of the limit frame, the compression spring 1 is in a deformed state, the arm rod on the mechanical door closer cannot move, the door panel is in a state of being opened to the maximum angle, when it is necessary to adjust the angle of the fixed position after the door panel is opened, the resistance rod is driven to move up and out of the limit slot, and the sliding frame will drive the resistance rod under the action of the compression spring 1. The door panel is moved to the left and reset. At this time, the door panel can be rotated to adjust the angle. After adjustment, the sliding frame drives the resistance rod to move right to the top of the corresponding limit groove, the compression spring is deformed, and the resistance rod is moved down and inserted into the limit groove to achieve the adjustment of the opening angle of the door panel; the upper left side of the door panel is connected to a resistance block located in front of the limit frame, and when the sliding frame drives the resistance rod to reset under the action of the compression spring, during the process of closing the door panel, the resistance block is suitable for squeezing the resistance rod to move up and retract, and the resistance rod will pass over the resistance block and the door panel, so as to close the door panel normally; the limit frame is provided with a lifting ejector located below the limit groove, so that the lifting ejector is electrically connected to the external control room. When a fire occurs, the lifting ejector is controlled to eject the resistance rod from the limit groove.

[0011] Preferably, one side of the interference rod has a protruding toggle portion, which is used to facilitate the up and down movement of the interference rod. The toggle portion is located below the sliding frame. At the same time, the toggle portion can also limit the maximum upward position of the interference rod to prevent the interference rod from moving out of the sliding frame. The upper end of the interference rod has a protruding limiting portion, and the limiting portion on the interference rod is suitable for supporting on the sliding frame. The limiting portion is used to limit the maximum downward position of the interference rod to prevent the interference rod from moving out of the sliding frame.

[0012] Preferably, the lifting ejector includes an ejector frame sliding on the limit frame, the ejector frame is provided with ejector parts with the same number as the limit slots, the ejector parts of the ejector frame are located below the limit slots in a one-to-one correspondence, and the upward movement of the ejector frame will drive the ejector parts to move upward to eject the interference rods in the limit slots, so that no matter in which limit slot the interference rods are stuck, the door panel can be quickly closed, four elastic sheets are connected between the ejector frame and the limit frame, and the elastic sheets are used for resetting the ejector frame that moves upward, and two electric push rods for electrical connection with the external control room are installed on the limit frame, the two electric push rods are symmetrical front and back, and a wedge block that contacts and cooperates with the lower side of the ejector frame is connected to the telescopic rod of the electric push rod, and the wedge block slides in the limit frame, and when a fire occurs, the two electric push rods are controlled to drive the front and rear wedge blocks to approach each other to squeeze the ejector frame to move upward, so as to eject the interference rod from the limit slot, thereby realizing automatic closing of the door panel, and then the electric push rod automatically drives the wedge block to reset.

[0013] Preferably, it also includes a water tank installed on the upper front side of the door frame, the water tank is used to store external water, a water pipe is connected between the water tank and the spray pipe, and the upper left side of the water tank is connected to a water inlet pipe with a built-in one-way valve. The water inlet pipe transports external water to the water tank for temporary storage, thereby ensuring a continuous supply of water. The water in the water tank will flow into the spray pipe through the water pipe.

[0014] Preferably, it also includes an air cylinder installed on the guide rail, the air cylinder runs through the left part of the guide rail, an air supply pipe with a built-in one-way valve at the end is connected between the first end of the air cylinder and the upper part of the water storage tank, the built-in one-way valve of the air supply pipe is located at the upper end of the air supply pipe, under the action of the built-in one-way valve of the air supply pipe, only the gas in the air cylinder can be transported into the water storage tank, a one-way air inlet pipe is installed at the first end of the air cylinder, under the action of the one-way air inlet pipe, only the air outside the air cylinder can be transported into the air cylinder, and the slider is connected with The piston rod slides through the second end of the air cylinder. When the door panel is closed, the left-moving slider will drive the piston rod to move left. Under the action of the piston rod, the gas in the air cylinder will be transported to the water tank through the air pipe, so as to pressurize the water tank when the door panel is closed, so that the water in the water tank can be transported to the spray pipe through the water pipe to spray onto the door panel; when the door panel is opened, the right-moving slider will drive the piston rod to move right. Under the action of the piston rod, the gas outside the air cylinder will be replenished into the air cylinder through the one-way air inlet pipe.

[0015] Preferably, it also includes a compression spring 2 located inside the air cylinder, and one end of the piston rod located inside the air cylinder is connected to the compression spring 2. When closing the door panel, the left-moving slider will drive the compression spring 2 to move left through the piston rod. When the door panel is close to closing, the compression spring 2 will be squeezed by the air cylinder when it moves left, and then the pressure-bearing unloading force of the compression spring 2 will be used to assist in closing the door panel; when opening the door panel, the right-moving slider will drive the compression spring 2 to move right and reset through the piston rod.

[0016] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects: 1. When closing the door panel, water is automatically sprayed to improve the sealing of smoke, reduce smoke permeability, and take away the heat on the surface of the door panel to lower the temperature, making it easier to open the door panel. The connecting spring cleverly realizes door closing buffering, and the water spraying automatically stops when the door panel is opened to prevent water from spraying on people.

[0017] 2. Not only can the function of automatically closing the door panel in case of fire be achieved through the electrical connection between the electric push rod and the external control room, but the resistance rod can also be manually operated to move up and change its position on the limit frame to manually adjust the opening angle of the door panel or close the door panel, which has various usage methods.

[0018] 3. When the door panel is closed, under the action of the piston rod, the gas in the gas cylinder will be transported to the water tank through the gas pipe, so as to pressurize the water tank when the door panel is closed, so that the water in the water tank can be transported to the spray pipe through the water pipe to spray onto the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the rear side of the present invention.

[0021] Figure 3 It is a left view of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point A in .

[0023] Figure 5 Schematic diagram of the frame, baffle and lever of the present invention, wherein only a portion of the frame is shown.

[0024] Figure 6 It is a schematic diagram of the push block and the roller of the present invention.

[0025] Figure 7 It is a schematic diagram of the door panel, door closing module and water storage tank of the present invention.

[0026] Figure 8 It is a cross-sectional view of the guide rail and the air cylinder of the present invention.

[0027] Fig. 9 It is a schematic diagram of the door panel, arm rod and limit assembly of the present invention.

[0028] Fig.10 It is a cross-sectional view of the arm of the present invention.

[0029] Fig.11 It is a cross-sectional view of the sliding frame of the present invention.

[0030] Fig.12 It is a cross-sectional view of the limiting frame of the present invention.

[0031] The markings in the drawings provided by the present invention are: 1-door frame, 11-frame, 2-door panel, 21-hinge, 22-fireproof layer, 23-door lock, 3-door closing module, 31-guide rail, 311-slider, 32-mechanical door closer, 321-arm, 33-limiting assembly, 331-limiting frame, 3310-limiting groove, 332-sliding frame, 333-compression spring 1, 334-resistance rod, 3341-sliding part, 3342-limiting part , 335-resistance block, 341-ejection frame, 342-elastic sheet, 343-wedge block, 344-electric push rod, 4-seal, 41-spray pipe, 410-spray hole, 42-baffle, 43-connecting spring, 44-connecting frame, 45-push rod, 46-push block, 461-roller, 47-water tank, 48-water pipe, 51-air cylinder, 52-air pipe, 53-one-way air inlet pipe, 54-piston rod, 55-compression spring two. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] A wooden interior fire door, such as Figure 1-Figure 5As shown, it includes a door frame 1 and a frame 11 installed between four side edges of the inner circle of the door frame 1, a door panel 2 is hingedly connected to one side of the frame 11 through a hinge 21, the surface of the door panel 2 has a fireproof layer 22, a door lock 23 is installed on the door panel 2, and the door panel 2 on the frame 11 is opened and closed and pushed and pulled by the door lock 23. A door closing module 3 is provided between the door panel 2 and the door frame 1, and the opened door panel 2 is fixed to a specific position by the door closing module 3 for people to pass through the door frame 1, or the door closing module 3 receives a signal from the control room to automatically close the door panel 2 in case of fire; a seal 4 away from the hinge 21 is connected to one side of the frame 11, and the seal 4 increases the sealing between the door panel 2 and the frame 11 when the door panel 2 is closed, and a spray pipe 4 located above the seal 4 is connected to the upper part of the door frame 1 1. The lower part of the spray pipe 41 has a plurality of spray holes 410 facing the seal 4, and the upper part of the spray pipe 41 has a water pipe 48, which transports external water to the spray pipe 41. The spray holes 410 on the spray pipe 41 can spray water between the door panel 2 and the seal 4, so as to improve the sealing effect of smoke by using the water and reduce the smoke permeability in the gap between the door panel 2 and the seal 4, and take away the heat on the surface of the door panel 2 by the vertical flow of the water to reduce the temperature, so that it is convenient for personnel to open the door panel 2 when needed; the middle part of the spray pipe 41 is slidably provided with a baffle 42 suitable for blocking between the spray hole 410 and the water pipe 48, and a connecting spring 43 is connected between the right side of the baffle 42 and the frame 11, and the connecting spring is used to 43 makes the baffle plate 42 block between the spray hole 410 and the water pipe 48. At this time, the water transported to the spray pipe 41 by the water pipe 48 cannot be sprayed out from the spray hole 410, so as to prevent the water from falling on the personnel and causing influence when the personnel open the door panel 2 and pass through the door frame 1. One side of the baffle plate 42 is connected to the connecting frame 44, and the upper part of the frame 11 is rotatably provided with a lever 45 for shifting the connecting frame 44. The upper end of the lever 45 protrudes with a protrusion that slides on the connecting frame 44, and the upper side of the door panel 2 is connected with a push block 46 suitable for squeezing the protrusion of the lever 45. When the door panel 2 is opened, the baffle plate 42 blocks between the spray hole 410 and the water pipe 48, and the personnel can pass through the door frame 1 normally. When a fire occurs, when the door panel 2 is closed to the edge When the seal 4 on the frame 11 is on, the door panel 2 will drive the push block 46 to squeeze the lower end of the lever 45, and the protrusion at the upper end of the lever 45 will drive the baffle 42 to move forward from between the spray hole 410 and the water pipe 48 through the connecting frame 44, and the connecting spring 43 will deform, so that when the door panel 2 is closed, the baffle 42 is automatically and synchronously opened, so that the water transported to the spray pipe 41 by the water pipe 48 is sprayed from the spray hole 410 to between the door panel 2 and the seal 4, which can not only avoid the water from affecting people, but also can timely cool down the door panel 2 by spraying water. In addition, by utilizing the pressure-bearing unloading force of the connecting spring 43, in the process of closing the door panel 2, it can also avoid the door panel 2 closing too fast to pinch hands or cause excessive damage to the frame 11 and the door frame 1.

[0035] like Figure 6As shown, a roller 461 for reducing friction is also included. The push block 46 is provided with a rotating roller 461, and the roller 461 replaces the push block 46 to squeeze the protruding portion of the lever 45, thereby reducing the loss caused by hard friction.

[0036] like Figure 7 and Figure 8 As shown, the door closing module 3 includes a guide rail 31 connected to the front side of the upper part of the door frame 1, a slider 311 slides on the guide rail 31, a mechanical door closer 32 is installed on the upper right side of the door panel 2, an arm 321 of the mechanical door closer 32 is rotatably arranged between the mechanical door closer 32 and the slider 311, and a limit assembly 33 for fixing the arm 321 is provided on the upper left side of the door panel 2. Initially, as shown in FIG. Figure 7 The position of the arm 321 is limited by the limit assembly 33, and the door panel 2 is in an open state. When a fire occurs, the limit assembly 33 releases the arm 321, and under the action of the mechanical door closer 32, the arm 321 drives the slider 311 to move left along the guide rail 31, and the door panel 2 rotates and closes. Similarly, when the door panel 2 is opened, under the action of the mechanical door closer 32, the arm 321 drives the slider 311 to move right along the guide rail 31.

[0037] like Fig. 9 and Fig.10 As shown, the limiting assembly 33 includes a limiting frame 331 connected to the upper left side of the door panel 2, and a plurality of limiting grooves 3310 are opened on the upper portion of the limiting frame 331. A sliding frame 332 slides on the arm 321 of the mechanical door closer 32, and a compression spring 333 surrounding the sliding frame 332 is connected between the sliding frame 332 and the arm 321. The compression spring 333 is used for resetting the sliding frame 332. A resisting rod 334 suitable for resisting against the limiting groove 3310 slides on the left end portion of the sliding frame 332, as shown in FIG. Fig. 9When the door panel 2 is opened, the arm 321 of the mechanical door closer 32 cannot move, and the door panel 2 is in a state of being opened to the maximum angle. When the angle of the door panel 2 fixed in the opened position needs to be adjusted, the arm 321 of the mechanical door closer 32 cannot move, and the arm 321 of the mechanical door closer 32 cannot move. When the door panel 2 is opened, the arm 321 of the mechanical door closer 32 cannot move, and the door panel 2 is in a state of being opened to the maximum angle. When the door panel 2 needs to be opened and the angle of the fixed position needs to be adjusted, the arm 321 of the mechanical door closer 32 cannot move, and the arm 321 of the mechanical door closer 32 cannot move. When the door panel 2 needs to be opened and the angle of the fixed position needs to be adjusted, the arm 321 of the mechanical door closer 32 cannot move, and the arm 321 of the mechanical door closer 32 cannot move. The present invention can adjust the opening angle of the door panel 2 to adapt to different usage scenarios and has strong adaptability; the upper left side of the door panel 2 is connected to a resistance block 335 located in front of the limit frame 331, and when the sliding frame 332 drives the resistance rod 334 to reset under the action of the compression spring 333, in the process of closing the door panel 2, the resistance block 335 is suitable for squeezing the resistance rod 334 to move up and retract, and the resistance rod 334 will pass over the resistance block 335 and the door panel 2, thereby closing the door panel 2 normally; the limit frame 331 is provided with a lifting ejector located below the limit slot 3310, and the lifting ejector is electrically connected to the external control room. When a fire occurs, the lifting ejector is controlled to eject the resistance rod 334 from the limit slot 3310, thereby realizing automatic closing of the door panel 2.

[0038] like Fig.11 As shown, one side of the resistance rod 334 has a protruding toggle portion 3341, and the toggle portion 3341 is used to facilitate the up and down movement of the resistance rod 334. The toggle portion 3341 is located below the sliding frame 332. At the same time, the toggle portion 3341 can also limit the maximum upward movement position of the resistance rod 334 to prevent the resistance rod 334 from moving out of the sliding frame 332. The upper end of the resistance rod 334 has a protruding limiting portion 3342. The limiting portion 3342 on the resistance rod 334 is suitable for supporting on the sliding frame 332. The limiting portion 3342 is used to limit the maximum downward movement position of the resistance rod 334 to prevent the resistance rod 334 from moving out of the sliding frame 332.

[0039] like Fig.12As shown, the lifting ejector includes an ejector frame 341 that slides on the limit frame 331, and the ejector frame 341 has the same number of ejector parts as the limit slots 3310. The ejector parts of the ejector frame 341 are located below the limit slots 3310 in a one-to-one correspondence. The upward movement of the ejector frame 341 will drive the ejector parts to move upward to eject the interference rods 334 in the limit slots 3310, so that no matter which limit slot 3310 the interference rod 334 is stuck in, the door panel 2 can be quickly closed. Four elastic sheets 342 are connected between the ejector frame 341 and the limit frame 331. The elastic sheets 342 are used to reset the ejector frame 341 that has moved upward. Two electric push rods 344 for electrically connecting to the external control room are installed on the limit frame 331. The electric push rods 344 are symmetrical front and back, and a wedge block 343 that contacts and cooperates with the lower side of the ejection frame 341 is connected to the telescopic rod of the electric push rod 344. The wedge block 343 slides in the limit frame 331. When a fire occurs, the two electric push rods 344 are controlled to drive the front and rear wedge blocks 343 to approach each other to squeeze the ejection frame 341 to move upward, thereby ejecting the resistance rod 334 from the limit groove 3310, thereby realizing automatic closing of the door panel 2, and then the electric push rod 344 automatically drives the wedge block 343 to reset; it should be explained that not only the electric push rod 344 can realize automatic closing of the door panel 2 in case of fire, but also the resistance rod 334 can be manually operated to move upward to manually adjust the opening angle of the door panel 2 or close the door panel 2, and the usage is diversified.

[0040] like Figure 1 and Figure 4 As shown, it also includes a water tank 47 installed on the upper front side of the door frame 1. The water tank 47 is used to store external water. A water pipe 48 is connected between the water tank 47 and the spray pipe 41. The upper left side of the water tank 47 is connected to a water inlet pipe with a built-in one-way valve. The water inlet pipe transports external water to the water tank 47 for temporary storage to ensure a continuous supply of water. The water in the water tank 47 will flow into the spray pipe 41 through the water pipe 48.

[0041] like Figure 1 , Figure 7 and Figure 8As shown, it also includes an air cylinder 51 installed on the guide rail 31, the air cylinder 51 passes through the left part of the guide rail 31, and an air supply pipe 52 with a built-in one-way valve at the end is connected between the first end (left end) of the air cylinder 51 and the upper part of the water storage tank 47. The built-in one-way valve of the air supply pipe 52 is located at the upper end of the air supply pipe 52. Under the action of the built-in one-way valve of the air supply pipe 52, only the gas in the air cylinder 51 can be transported into the water storage tank 47. A one-way air inlet pipe 53 is installed at the first end of the air cylinder 51. Under the action of the one-way air inlet pipe 53, only the gas outside the air cylinder 51 can be transported into the air cylinder 51. The slider 311 is connected with a one-way air inlet pipe 53 that slides through the first end of the air cylinder 51. The piston rod 54 at the second end (right end) will move the piston rod 54 to the left when the door panel 2 is closed. Under the action of the piston rod 54, the gas in the air cylinder 51 will be transported to the water tank 47 through the air pipe 52, so as to pressurize the water tank 47 when the door panel 2 is closed, so that the water in the water tank 47 can be transported to the spray pipe 41 through the water pipe 48 to spray on the door panel 2. The various steps are interrelated and coordinated with each other; when the door panel 2 is opened, the rightward sliding block 311 will drive the piston rod 54 to move right. Under the action of the piston rod 54, the gas outside the air cylinder 51 will be replenished into the air cylinder 51 through the one-way air inlet pipe 53.

[0042] like Figure 8 As shown, it also includes a compression spring 55 located inside the air cylinder 51, and one end of the piston rod 54 located inside the air cylinder 51 is connected to the compression spring 55. When closing the door panel 2, the left-moving slider 311 will drive the compression spring 55 to move left through the piston rod 54. When the door panel 2 is close to closing, the compression spring 55 will be squeezed by the air cylinder 51 when it moves left, and then the pressure-bearing unloading force of the compression spring 55 is used to assist the closing of the door panel 2; and when opening the door panel 2, the right-moving slider 311 will drive the compression spring 55 to move right and reset through the piston rod 54.

[0043] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0044] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A wooden interior fire door, characterized in that: The invention comprises a door frame (1) and a frame (11) installed on the inner circle of the door frame (1); a door panel (2) is hingedly connected to one side of the frame (11) via a hinge (21); a door closing module (3) is provided between the door panel (2) and the door frame (1); a sealing strip (4) away from the hinge (21) is connected to one side of the frame (11); a spray pipe (41) is connected to the door frame (1); a spray hole (410) is provided at the lower part of the spray pipe (41); a water pipe (48) is provided at the upper part of the spray pipe (41); the spray pipe A baffle (42) is slidably disposed in the middle of the door panel (41) and is suitable for blocking between the spray hole (410) and the water pipe (48); a connecting spring (43) is connected between the baffle (42) and the frame (11); a connecting frame (44) is connected to one side of the baffle (42); a lever (45) is rotatably disposed on the frame (11); a protrusion that slides on the connecting frame (44) is protruded from the upper end of the lever (45); and a push block (46) that is suitable for pressing the protrusion of the lever (45) is connected to the upper side of the door panel (2).

2. A wooden interior fire door according to claim 1, characterized in that: It also includes a roller (461), on which the push block (46) is rotatable, and the roller (461) replaces the push block (46) to squeeze the protruding portion of the lever (45).

3. A wooden interior fire door according to claim 1, characterized in that: The door closing module (3) comprises a guide rail (31) connected to the door frame (1), a slider (311) sliding on the guide rail (31), a mechanical door closer (32) mounted on the door panel (2), an arm (321) of the mechanical door closer (32) rotatably arranged between the mechanical door closer (32) and the slider (311), and a limit assembly (33) for fixing the arm (321) is provided on the door panel (2).

4. A wooden interior fire door according to claim 3, characterized in that: The limiting assembly (33) comprises a limiting frame (331) connected to the door panel (2), a plurality of limiting grooves (3310) being formed on the upper portion of the limiting frame (331), a sliding frame (332) slidingly mounted on the arm (321) of the mechanical door closer (32), a compression spring (333) being connected between the sliding frame (332) and the arm (321), a resisting rod (334) slidingly mounted on the end of the sliding frame (332) and adapted to resist against the limiting groove (3310); a resisting block (335) being connected to the door panel (2), the resisting block (335) being adapted to press against the resisting rod (334); and a lifting and ejecting device located below the limiting groove (3310) being provided on the limiting frame (331).

5. A wooden interior fire door according to claim 4, characterized in that: One side of the abutment rod (334) has a protruding toggle portion (3341), the toggle portion (3341) is located below the sliding frame (332), and the upper end of the abutment rod (334) has a protruding limiting portion (3342), and the limiting portion (3342) on the abutment rod (334) is suitable for being supported on the sliding frame (332).

6. A wooden interior fire door according to claim 4, characterized in that: The lifting ejector comprises an ejector frame (341) sliding on the limit frame (331), the ejector frame (341) having the same number of ejector parts as the limit slots (3310), the ejector parts of the ejector frame (341) being located below the limit slots (3310) in a one-to-one correspondence, an elastic sheet (342) being connected between the ejector frame (341) and the limit frame (331), an electric push rod (344) being installed on the limit frame (331), and a wedge block (343) being in contact with and engaged with the lower side of the ejector frame (341) being connected to the telescopic rod of the electric push rod (344).

7. A wooden interior fire door according to claim 3, characterized in that: It also includes a water storage tank (47) mounted on the door frame (1), the water delivery pipe (48) is connected between the water storage tank (47) and the spray pipe (41), and the upper part of the water storage tank (47) is connected to a water inlet pipe with a built-in one-way valve.

8. A wooden interior fire door according to claim 7, characterized in that: It also includes an air cylinder (51) mounted on the guide rail (31), an air supply pipe (52) with a built-in one-way valve at the end thereof being connected between the first end of the air cylinder (51) and the water storage tank (47), a one-way air inlet pipe (53) being mounted on the first end of the air cylinder (51), and a piston rod (54) being connected to the slider (311) and slidingly passing through the second end of the air cylinder (51).

9. A wooden interior fire door according to claim 8, characterized in that: It also includes a second compression spring (55) located inside the gas cylinder (51), and one end of the piston rod (54) located inside the gas cylinder (51) is connected to the second compression spring (55).

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