Fireproof check valve for public exhaust passage of toilet

Abstract

The utility model relates to the field of flue check valves, and discloses a fireproof check valve for a public exhaust passage of a toilet, which comprises a valve port, a valve body and a valve cover, the valve port is fixedly connected to the center of the side surface of the valve body, and the valve cover is rotatably connected to the middle of the other side of the valve body; sealing foam is fixedly installed on the periphery of the edge of the side face of the valve body, a left side plate and a right side plate are fixedly installed on the two sides of the side face of the valve body, and an opening-closing base is fixedly installed on the portion, below the position between the left side plate and the right side plate, of the side face of the valve body. According to the check valve, check valve components are arranged, so that the check valve has the functions of being convenient to install and high in sealing performance and has the emergency adjustment function under the emergency situation, and the smoke outlet port is formed in the position, located at the end of the valve port, of the center of the side face of the valve body. Therefore, the use requirements of people are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flue check valve field, concretely relates to a bathroom public exhaust flue fire check valve. BACKGROUND

[0002] The flue check valve is a kind of automatic valve that is automatically opened and closed by the force generated by the flow of medium in pipeline.Currently, for the bathroom without ventilation window in high-rise residence, a vertical public flue for centralized exhaust is provided, and user can exhaust bathroom gas into the public flue through exhaust equipment.In order to prevent high-temperature smoke in the room from flowing into the public flue of other floors in the case of fire, a fire check valve for preventing smoke backflow is arranged between the exhaust equipment and the public flue.

[0003] The fire check valve mainly comprises valve port, valve shell, valve cover and locking mechanism.Under normal working condition, the bathroom exhaust equipment exhausts gas into the public flue through the check valve, and when fire occurs, the locking mechanism of the check valve locks the valve cover, which plays the effect of smoke isolation and fire prevention.Currently, the flue check valve has the following problems under the current technical background:

[0004] The existing check valve is mostly connected and fixed with flue through expansion screw, which is troublesome to install and can damage the flue, and the check valve and flue lack sealing at the joint, which can cause the backflow of waste gas in the flue;

[0005] The existing check valve cover sealing ring is single-layer sealing ring, and the flatness of valve cover and smoke outlet is required to be higher, and if the flatness of the two places is not uniform, the sealing performance of the sealing ring will be greatly reduced;

[0006] The existing check valve has a fixed spring force to realize the automatic closing of valve cover, and the spring force cannot be adjusted, and for the user of the floor with high negative pressure in the public flue, the valve cover of the check valve cannot be completely opened, so that the exhaust efficiency of the check valve is reduced. INVENTION CONTENTS

[0007] The utility model aims at providing a bathroom public exhaust flue fire check valve, and solves the following technical problems: how to make the bathroom public exhaust flue fire check valve have the functions of convenient installation, high sealing performance and emergency adjustment.

[0008] The utility model can be realized by the following technical scheme: a bathroom public exhaust flue fire check valve, comprising: valve port, valve body and valve cover, the valve port is fixedly connected to the side surface center of valve body, and the valve cover is rotatably connected to the middle part of the other side of valve body.

[0009] The side edge of the valve body is fixedly provided with a sealing foam, and the two sides of the valve body are fixedly provided with left and right side plates.

[0010] The bottom of the valve cover is fixedly connected with an opening and closing connecting plate, the middle part of the back surface of the opening and closing connecting plate is provided with a torsion adjusting groove, the two ends of the opening and closing torsion spring are provided with torsion spring clamping feet, the peripheral edge of the valve cover is fixedly provided with a sealing ring, and the edge of the sealing ring is provided with a sealing ring edge layer.

[0011] The side surface of the left and right side plates is provided with a limiting sliding groove, the locking rod is slidably connected in the limiting sliding groove, the bottom of the side surface between the left and right side plates is welded with a rear connecting plate, the middle part of the rear connecting plate is fixedly provided with a temperature sensing element, the two ends of the locking rod and the top of the outer side surface of the left and right side plates are fixedly connected with a locking tension spring, and the middle part of the outer side surface of the left and right side plates is fixedly provided with a mounting clamping spring.

[0012] The temperature sensing element comprises a copper sheet A and a copper sheet B.

[0013] As a preferred scheme of the utility model, the temperature sensing element in the middle part of the rear connecting plate is clamped with the middle part of the outer surface of the locking rod.

[0014] As a preferred scheme of the utility model, the valve cover is rotationally connected with the opening and closing rotating shaft through the opening and closing connecting plate at the bottom.

[0015] As a preferred scheme of the utility model, the valve cover is clamped with the smoke outlet port in the middle part of the valve body through the sealing ring.

[0016] As a preferred scheme of the utility model, the torsion spring clamping feet at the two ends of the opening and closing torsion spring are clamped with the torsion adjusting groove and the bottom of the opening and closing base respectively.

[0017] As a preferred scheme of the utility model, the torsion adjusting groove is divided into multiple levels and arranged on the middle part of the outer surface of the opening and closing connecting plate.

[0018] As a preferred scheme of the utility model, the copper sheet A and the copper sheet B are welded by a soldering wire, and when the ambient temperature reaches the melting point of the soldering wire, the copper sheet A and the copper sheet B are directly separated.

[0019] As a preferred scheme of the utility model, the utility model has the beneficial effects that:

[0020] (1) The utility model discloses in order to can reach the function of quick installation, sets up the installation snap spring on the both sides of valve body, only needs to use check valve both sides installation snap spring to hold up the public flue hole in the use process, to reach the purpose of quick installation, and check valve and the public flue fit place are equipped with sealing bubble cotton, can prevent the leak smoke situation of fit place from happening;

[0021] (2) The utility model discloses the valve cover sealing ring is designed as double -layer sealing ring, and make sealing ring lower edge and sealing ring middle layer have certain gap, when the slight deformation of the smoke outlet plane, sealing ring lower edge is tightly fitted valve body smoke outlet plane under the pressure effect, make the airtight performance of check valve not be influenced, to further improve the airtight performance of check valve;

[0022] (3) The utility model discloses the torsion adjustment groove is set up on the back of the opening and closing connecting plate, can make the resilience in the valve cover opening and closing process adjustable, so in the floor of higher negative pressure can reduce this resilience, make check valve when exhaust gas valve cover can reach complete opening, improve exhaust gas efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described below in connection with the drawings.

[0024] Figure 1 It is sanitary room public exhaust way fireproof check valve use state structure schematic drawing;

[0025] Figure 2 It is check valve back structure schematic drawing;

[0026] Figure 3 It is check valve front closed structure schematic drawing;

[0027] Figure 4 It is check valve front opening structure schematic drawing;

[0028] Figure 5 It is check valve front split explosion structure schematic drawing;

[0029] Figure 6 It is valve cover turning process structure schematic drawing;

[0030] Figure 7 It is check valve cut structure schematic drawing;

[0031] Figure 8 It is valve cover cut structure schematic drawing;

[0032] Figure 9 It is temperature sensing element structure schematic drawing.

[0033] BRIEF DESCRIPTION OF DRAWINGS:1. Valve port; 2. Valve body; 21. Smoke outlet; 3. Valve cover; 4. Opening and closing connecting plate; 41. Torque adjusting groove; 5. Left and right side plates; 6. Rear connecting plate; 7. Temperature sensing element; 71. Copper sheet A, 72. Copper sheet B; 8. Sealing foam; 9. Installation clasp spring; 10. Locking tension spring; 11. Opening and closing torsional spring; 111. Torsional spring clamping leg; 12. Locking rod; 13. Opening and closing base; 131. Opening and closing rotating shaft; 14. Sealing ring; 141. Sealing ring edge layer; 15. Vertical common flue; 151. Common flue hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0035] Please refer to Figures 1-9 The utility model discloses a bathroom common flue fireproof check valve, which comprises a valve port 1, a valve body 2 and a valve cover 3, the valve port 1 is fixedly connected to the center of the side of the valve body 2, and the valve cover 3 is rotatably connected to the middle part of the other side of the valve body 2.

[0036] The side edge of the valve body 2 is fixedly installed with sealing foam 8 around, the two sides of the side of the valve body 2 are fixedly installed with left and right side plates 5, the side of the valve body 2 and below the left and right side plates 5 are fixedly installed with an opening and closing base 13, the middle part of the side of the opening and closing base 13 is provided with an opening and closing rotating shaft 131, the outer surface of the opening and closing rotating shaft 131 is sleeved with an opening and closing torsional spring 11, and the center of the side of the valve body 2 and the end of the valve port 1 are provided with a smoke outlet 21.

[0037] The bottom of the valve cover 3 is fixedly connected with an opening and closing connecting plate 4, the back middle part of the opening and closing connecting plate 4 is provided with a torque adjusting groove 41, the two ends of the opening and closing torsional spring 11 are provided with torsional spring clamping legs 111, the peripheral edge of the valve cover 3 is fixedly installed with a sealing ring 14, and the edge of the sealing ring 14 is provided with a sealing ring edge layer 141.

[0038] The side of the left and right side plates 5 is provided with a limiting sliding groove, the locking rod 12 is slidably clamped in the limiting sliding groove of the side of the left and right side plates 5, the bottom of the side between the left and right side plates 5 is welded with a rear connecting plate 6, the middle part of the rear connecting plate 6 is fixedly installed with a temperature sensing element 7, the two ends of the locking rod 12 and the top of the outer side of the left and right side plates 5 are fixedly connected with a locking tension spring 10, and the outer side middle part of the left and right side plates 5 is fixedly installed with an installation clasp spring 9.

[0039] The temperature sensing element 7 comprises a copper sheet A 71, and the upper outer surface of the copper sheet A 71 is fixedly connected with a copper sheet B 72.

[0040] The temperature sensing element 7 in the middle of the rear connecting plate 6 is clamped with the middle outer surface of the locking rod 12, which can play a self-unlocking role in emergency, so that the valve cover 3 is in a closed state and cannot be opened, preventing high-temperature harmful gas from entering the remaining floors along the vertical public flue 15, the valve cover 3 is rotationally connected with the opening and closing connecting plate 4 at the bottom through the opening and closing connecting plate 4, which can limit the deflection of the valve cover 3, and the valve cover 3 is clamped with the smoke outlet port 21 in the middle of the side surface of the valve body 2 through the sealing ring 14, which can play a sealing role without smoke exhaust.

[0041] The torsional spring clamping feet 111 at both ends of the opening and closing torsional spring 11 are clamped with the torsional force adjusting groove 41 and the bottom of the opening and closing base 13 respectively, which can provide a reset power after the valve cover 3 is turned over, the torsional force adjusting groove 41 is divided into multiple levels and arranged on the middle outer surface of the opening and closing connecting plate 4, the reset force of the opening and closing torsional spring 11 can be adjusted according to the floor height and use requirement, and the copper sheet A71 and the copper sheet B72 are welded by soldering wires, when the ambient temperature reaches the melting point of the soldering wire, the copper sheet A71 and the copper sheet B72 are directly separated, so that the self-release purpose is achieved.

[0042] The working principle of the utility model is: when installing the check valve, the installation clasp spring 9 is first turned over by pulling, then the valve cover 3 on the side of the valve body 2 is inserted into the public flue hole 151, until the sealing foam 8 on the side of the valve body 2 is tightly attached to the periphery of the two public flue holes 151, and the installation clasp spring 9 is clamped on the inner surface of the public flue hole 151 under the action of its own elastic force, after the check valve is installed, the airflow passes through the valve port 1, and the valve cover 3 is in an open state under the pressure of the airflow, and the airflow is discharged upward into the vertical public flue 15 after being guided by the valve cover 3; when a fire occurs, the copper sheet A71 and the copper sheet B72 are separated due to high-temperature soldering fusion, and the locking rod 12 moves along the limiting sliding groove under the action of the pulling force of the locking tension spring 10, at the same time, the locking rod 12 presses the back of the valve cover 3, so that the valve cover 3 is in a closed state and cannot be opened, preventing high-temperature harmful gas from entering the remaining floors along the vertical public flue 15, so through the setting of the check valve components, the check valve has the functions of convenient installation and high sealing performance, and has the emergency adjustment function in emergency, thereby meeting the use requirement of people.

[0043] The above embodiment of the utility model is described in detail, but the content is only the preferred embodiment of the utility model, and cannot be considered as limiting the scope of the utility model. Any equivalent change and improvement within the scope of the utility model application should still belong to the patent coverage range of the utility model.

Claims

1. A fire rated check valve for a public exhaust vent in a bathroom, comprising: Valve port (1), valve body (2) and valve cover (3), the valve port (1) is fixedly connected in the side center of valve body (2), the valve cover (3) is rotatably connected in the middle of the other side of valve body (2); It is characterized in that the side edge of the valve body (2) is fixedly installed with a sealing foam (8) around, the left and right side plates (5) are fixedly installed on both sides of the side of the valve body (2), the opening and closing base (13) is fixedly installed below the side of the valve body (2) and between the left and right side plates (5), the opening and closing base (13) is provided with an opening and closing rotating shaft (131) in the middle of the side edge, the opening and closing torsional spring (11) is sleeved on the outer surface of the opening and closing rotating shaft (131), the smoke outlet port (21) is provided in the center of the side of the valve body (2) and at the end of the valve port (1); The bottom of the valve cover (3) is fixedly connected with the opening and closing connecting plate (4), the back middle part of the opening and closing connecting plate (4) is provided with a torsion adjusting groove (41), the both ends of the opening and closing torsional spring (11) are provided with torsional spring clamping feet (111), the outer peripheral edge of the valve cover (3) is fixedly installed with a sealing ring (14), and the edge of the sealing ring (14) is provided with a sealing ring edge layer (141); The side of the left and right side plates (5) is provided with a limiting sliding groove, the locking rod (12) is slidably clamped in the limiting sliding groove of the side of the left and right side plates (5), the rear connecting plate (6) is welded on the side bottom between the left and right side plates (5), the temperature sensing element (7) is fixedly installed in the middle of the rear connecting plate (6), the locking tension spring (10) is fixedly connected between the both ends of the locking rod (12) and the outer side top of the left and right side plates (5), and the mounting clamping spring (9) is fixedly installed on the outer side middle of the left and right side plates (5); The temperature sensing element (7) comprises a copper sheet A (71), and the upper outer surface of the copper sheet A (71) is fixedly connected with a copper sheet B (72).

2. A fire rated check valve for a public exhaust vent in a bathroom according to claim 1, wherein, The temperature sensing element (7) in the middle of the rear connecting plate (6) is clamped with the middle outer surface of the locking rod (12).

3. A fire rated check valve for a public exhaust vent in a bathroom according to claim 2, wherein The valve cover (3) is rotatably connected with the opening and closing rotating shaft (131) through the opening and closing connecting plate (4) at the bottom.

4. The fire rated check valve for a public exhaust vent in a bathroom according to claim 3, wherein The valve cover (3) is clamped with the smoke outlet port (21) in the middle of the side of the valve body (2) through the sealing ring (14).

5. A fire rated check valve for a bathroom exhaust according to claim 4, wherein, The torsional spring clamping feet (111) at both ends of the opening and closing torsional spring (11) are respectively clamped with the torsion adjusting groove (41) and the bottom of the opening and closing base (13).

6. A fire rated check valve for a public exhaust vent in a bathroom according to claim 5, wherein, The torsion adjusting groove (41) is divided into multiple levels and arranged on the middle outer surface of the opening and closing connecting plate (4).

7. A fire rated check valve for a public exhaust vent in a bathroom according to claim 6, wherein The copper sheet A (71) and the copper sheet B (72) are welded by soldering wire, and when the ambient temperature reaches the melting point of the soldering wire, the copper sheet A (71) and the copper sheet B (72) are directly separated.

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