Valve body of flue fireproof check valve

Abstract

The utility model relates to a valve body of a flue fireproof check valve, and belongs to the technical field of flue check valves, the valve body comprises a check valve body and a sealing cover, the check valve body is provided with a smoke exhaust through hole penetrating through the check valve body, one side of the sealing cover is hinged to the check valve body to shield the smoke exhaust through hole, the smoke exhaust through hole is provided with a rib plate, and the rib plate is arranged on the check valve body. A mounting groove is formed in the side, close to the sealing cover, of the rib plate, a magnet is placed in the mounting groove, a magnetic block capable of generating adsorption force with the magnet is arranged on the sealing cover, the magnetic block is limited on the sealing cover, and the size of the mounting groove is larger than that of the magnet. And the position of the magnet in the mounting groove can be adjusted. The valve has the effect that the magnetic attraction force of the valve body to the sealing cover can be adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of flue check valves, and in particular to a valve body of a flue fire check valve. Background Art

[0002] The flue fire check valve automatically opens and closes by the force generated by the flow of the airflow medium in the flue, thereby releasing smoke in one direction. The flue fire check valve includes a base, a valve body installed on the base, and a guide cover installed on the base for guiding the smoke. During use, the smoke pushes the valve body open and is discharged. When there is no smoke discharge, the valve body is closed to prevent the external smoke from overflowing into the room.

[0003] In the related art, for example, the Chinese utility model patent with the announcement number CN221034123U discloses a flue fire check valve, including a base, a check valve body and a guide device, an inlet pipe is arranged on the base, the check valve body is installed on the side of the base away from the inlet pipe, the guide device is arranged outside the check valve body and installed on the base, and the check valve body includes a connecting seat and a sealing cover. The utility model adopts a guide pipe formed by stretching on the base, after the high-temperature and high-pressure flue gas is introduced, the sealing cover is pushed to rotate relative to the connecting seat, so that the sealing cover is opened, and the flue gas is introduced and acts on the guide cover, so that the flue gas is quickly output, and in the absence of external flue gas, due to the hinged design at the bottom, the sealing cover automatically returns to the cover and is arranged on the connecting seat, so as to achieve its sealing, and in order to prevent the check valve from failing due to the failure of the hinged design, the utility model can also use the magnet on the check valve body and the magnetic block arranged on the sealing cover to interact and achieve its rapid adsorption, so that its check effect is better and the effect is more stable.

[0004] Since the magnet on the check valve body is fixed and difficult to move, the adsorption force between the magnetic block on the sealing cover and the magnet on the check valve body is a fixed value, so the sealing cover needs a strong wind force and air pressure to be pushed open when it is closed. However, different households use different range hoods, and the power of the range hoods is different, so there will be a situation where the wind force and air pressure of the oil smoke are small. When the wind force and air pressure of the oil smoke are small, it is easy for the oil smoke to fail to completely push open the one-way valve cover, which can easily cause the oil smoke to be difficult to discharge and flow back. Utility Model Content

[0005] In order to adjust the magnitude of the magnetic attraction of the valve body to the sealing cover, the present application provides a valve body for a flue fire check valve.

[0006] The present application provides a valve body of a flue fire check valve, which adopts the following technical solution:

[0007] A valve body of a flue fire check valve comprises a check valve body and a sealing cover, wherein the check valve body is provided with a smoke exhaust hole penetrating the check valve body, one side of the sealing cover is hinged to the check valve body to cover the smoke exhaust hole, a rib plate is provided at the smoke exhaust hole, a mounting groove is provided on the side of the rib plate close to the sealing cover, a magnet is placed in the mounting groove, a magnetic block capable of generating adsorption force with the magnet is provided on the sealing cover, the magnetic block is limited on the sealing cover, the size of the mounting groove is larger than the size of the magnet, and the position of the magnet in the mounting groove can be adjusted.

[0008] Preferably, the rib strip includes a connecting portion connected to the check valve body and a magnet mounting portion for mounting the magnet, the connecting portion is provided with two sections, the two connecting portions are respectively located at two ends of the magnet mounting portion, and the width of the magnet mounting portion is greater than the width of the connecting portion.

[0009] Preferably, ends of the two connecting portions facing away from the magnet mounting portion are both provided with connecting pieces fixed to the check valve body, and the width of the connecting pieces is greater than the width of the connecting portions.

[0010] Preferably, a partition is provided in the installation groove, and a plurality of the partitions are spaced apart along the length direction of the installation groove. The installation groove forms a plurality of partition grooves through the plurality of the partitions, and the magnet can be located in any one of the partition grooves.

[0011] Preferably, a stamping groove is stamped on a side of the sealing cover facing away from the rib plate, and the magnetic block is located in the stamping groove.

[0012] Preferably, a side of the magnetic block facing away from the stamping groove protrudes from the stamping groove.

[0013] Preferably, the attraction between the magnet and the rib plate is greater than the attraction between the magnet and the magnetic block.

[0014] Preferably, two sealing covers are symmetrically arranged on the check valve body, and magnetic blocks are arranged on the two sealing covers. Two rib plates are arranged, and mounting grooves are opened on the two rib plates. The magnets are placed in the two mounting grooves, and the two magnets correspond to the two sealing covers one by one.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. Since the magnetic block is limited on the sealing cover, when the magnet needs to have a larger suction force on the sealing cover, the position of the magnet in the installation groove can be moved so that the magnet is closer to the magnetic block. When the magnet needs to have a smaller suction force on the sealing cover, the position of the magnet in the installation groove can be moved so that the magnet is farther away from the magnetic block. During installation, the staff can adjust the position of the magnet according to the suction force of the user's range hood or the actual situation to adjust the suction force of the check valve body on the sealing cover;

[0017] 2. When adjusting the position of the magnet, the magnet can be placed in the corresponding partition groove so that the adjusted magnet can be further limited by the partition, thereby improving the stability of the adjusted magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the valve body in the closed state in Example 1 of the present application.

[0019] Figure 2 This is a schematic diagram of the valve body in the open state in Example 1 of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the rib plate in Example 1 of the present application.

[0021] Figure 4 It is a schematic diagram of the structure of the rib plate in the second embodiment of the present application.

[0022] Figure 5 This is a schematic diagram of the closed state of the valve body in Example 3 of the present application.

[0023] Figure 6 It is a schematic diagram of the matching structure of the rib plate and the check valve body in the third embodiment of the present application.

[0024] Explanation of the reference numerals: 1. check valve body; 11. smoke exhaust hole; 111. cross plate; 12. rib plate; 13. magnet; 14. connecting portion; 15. magnet mounting portion; 16. mounting groove; 17. connecting piece; 18. partition plate; 19. partition groove; 2. sealing cover; 21. magnetic block; 22. rotating shaft; 23. stamping groove. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-6 This application is described in further detail.

[0026] The embodiment of the present application discloses a valve body of a flue fire check valve. Figure 1 and Figure 2The valve body of the flue fire check valve includes a check valve body 1 and a sealing cover 2. The check valve body 1 is provided with a smoke exhaust hole 11 penetrating the check valve body 1. One side of the sealing cover 2 is hinged on the check valve body 1 to cover the smoke exhaust hole 11. A magnetic block 21 is provided on the sealing cover 2, and the magnetic block 21 is limited on the sealing cover 2. A rib plate 12 is provided at the smoke exhaust hole 11, and a magnet 13 adsorbed by the magnetic block 21 is provided on the rib plate 12. The magnet 13 is adsorbed on the rib plate 12. The position of the magnet 13 on the rib plate 12 can be adjusted, that is, the distance between the magnet 13 and the magnetic block 21 can be adjusted, so that the adsorption force of the check valve body 1 on the sealing cover 2 can be adjusted.

[0027] The sealing cover 2 is provided with a rotating support plate installed on one side of the sealing cover 2, and a rotating shaft 22 is inserted on the rotating support plate. Both axial ends of the rotating shaft 22 protrude from the rotating support plate, and both axial ends of the rotating shaft 22 are rotatably installed on the check valve body 1, so that one side of the sealing cover 2 is hinged on the check valve body 1.

[0028] Reference Figure 1 and Figure 2 A stamping groove 23 is stamped on the side of the sealing cover 2 away from the rib plate 12, and the magnetic block 21 is installed in the stamping groove 23. The size of the magnetic block 21 is adapted to the size of the stamping groove 23, so that the magnetic block 21 is not easy to shake greatly after being installed in the stamping groove 23. The side of the magnetic block 21 away from the bottom of the stamping groove 23 protrudes from the stamping groove 23, so that the user can easily take the magnetic block 21 out of the stamping groove 23 for replacement. In addition, the sealing cover 2 is made of metal, so the magnetic block 21 can be stably adsorbed on the sealing cover 2.

[0029] Reference Figure 2 and Figure 3 The smoke exhaust hole 11 is divided into two by a rib plate 12. The rib plate 12 includes a connecting portion 14 and a magnet mounting portion 15. The connecting portion 14 is provided with two sections, and the two sections of the connecting portion 14 are respectively located at opposite ends of the magnet mounting portion 15. The connecting portion 14 is used to connect with the check valve body 1, and the magnet mounting portion 15 is used to install the magnet 13. The connecting portion 14 and the magnet mounting portion 15 are integrally formed.

[0030] Reference Figure 2 and Figure 3, assuming that the distance between the two connecting parts 14 is the length of the rib plate 12, the width of the magnet mounting part 15 is greater than the width of the connecting part 14, so that a larger magnet 13 can be installed on the magnet mounting part 15. Both sides of the magnet mounting part 15 in the width direction are bent toward the side close to the sealing cover 2, and the magnet mounting part 15 forms a mounting groove 16 for mounting the magnet 13 through the bent edges. The size of the mounting groove 16 along the length direction of the rib plate 12 is greater than the size of the magnet 13, so that the position of the magnet 13 in the mounting groove 16 can be adjusted, that is, the distance between the magnet 13 and the magnetic block 21 can be adjusted, so that the adsorption force between the magnet 13 and the magnetic block 21 can be adjusted.

[0031] There is a certain gap between the magnet 13 and the sealing cover 2, so that the sealing cover 2 is easy to open under the action of smoke. Since the sealing cover 2 is separated from the magnetic block 21 and the magnet 13, and there is a certain gap between the magnet 13 and the sealing cover 2, the adsorption force between the magnet 13 and the rib plate 12 is greater than the adsorption force between the magnet 13 and the magnetic block 21, so that when the sealing cover 2 is opened, the magnet 13 is not easy to be adsorbed on the sealing cover 2 and detached from the mounting groove 16.

[0032] Reference Figure 2 and Figure 3 Among them, the two connecting parts 14 have one end away from the magnet mounting part 15 integrally formed with a connecting piece 17, the width of the connecting piece 17 is greater than the width of the connecting part 14, the connecting piece 17 is welded to the check valve body 1, and the rib plate 12 increases the contact area with the check valve body 1 through the connecting piece 17, thereby making the entire rib plate 12 more stable after being fixed to the check valve body 1.

[0033] The implementation principle of the valve body of a flue fire check valve in an embodiment of the present application is as follows: by placing the magnetic block 21 into the stamping groove 23, the magnetic block 21 is limited on the sealing cover 2, and the size of the mounting groove 16 in the length direction of the rib plate 12 is larger than the size of the magnet 13, so that the position of the magnet 13 in the mounting groove 16 can be adjusted. Therefore, when the magnet 13 needs to have a larger suction force on the sealing cover 2, the magnet 13 can be moved in the mounting groove 16 so that the magnet 13 is closer to the magnetic block 21. When the magnet 13 needs to have a smaller suction force on the sealing cover 2, the magnet 13 can be moved in the mounting groove 16 so that the magnet 13 is farther away from the magnetic block 21. Therefore, during installation, the staff can adjust the position of the magnet 13 according to the suction force of the user's range hood or the actual situation to achieve the adjustment of the suction force of the check valve body 1 on the sealing cover 2.

[0034] Example 2, refer to Figure 4The difference between this embodiment and the first embodiment is that: a plurality of partitions 18 are welded in the installation groove 16, and the plurality of partitions 18 are arranged at intervals along the length direction of the installation groove 16, and the installation groove 16 forms a plurality of partition grooves 19 through the plurality of partitions 18, and the magnet 13 can be placed in any of the partition grooves 19. After the magnet 13 is located in the partition groove 19, the magnet 13 is limited by the partition 18, and is not easy to move freely in the installation groove 16, thereby improving the stability of the magnet 13 after installation.

[0035] The implementation principle of the valve body of a flue fire check valve in an embodiment of the present application is: when adjusting the adsorption force of the magnet 13 on the sealing cover 2, the magnet 13 can be placed in the corresponding partition groove 19. After the magnet 13 is located in the partition groove 19, it is limited by the partition 18 and is more stably adsorbed on the rib plate 12.

[0036] Example 3, refer to Figure 5 and Figure 6 The difference between this embodiment and the first embodiment is that: two sealing covers 2 are provided, and the two sealing covers 2 are symmetrically arranged on the check valve body 1, and the two sealing covers 2 respectively cover one half of the smoke exhaust hole 11. The rotating shaft 22 is located between the two sealing covers 2, and the two sealing covers 2 share the same rotating shaft 22.

[0037] Reference Figure 5 and Figure 6 Correspondingly, the two sealing covers 2 are provided with stamping grooves 23, and the magnetic blocks 21 are installed in the stamping grooves 23 on the two sealing covers 2. A horizontal plate 111 is welded inside the smoke exhaust through hole 11, and the smoke exhaust through hole 11 is divided into two by the horizontal plate 111, and the horizontal plate 111 is parallel to the rotating shaft 22. Similarly, two rib plates 12 are provided, and the two rib plates 12 and the horizontal plate 111 form a cross shape. The ends of the two rib plates 12 that are close to each other are welded to the horizontal plate 111; the ends of the two rib plates 12 that are away from each other are welded to the check valve body 1. Installation grooves 16 are opened on the two rib plates 12, and magnets 13 are placed in the two installation grooves 16. The two magnets 13 correspond to the two sealing covers 2 one by one.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve body of a flue fire check valve, characterized in that: The invention comprises a check valve body (1) and a sealing cover (2), wherein the check valve body (1) is provided with a smoke exhaust hole (11) penetrating the check valve body, one side of the sealing cover (2) is hingedly connected to the check valve body (1) to cover the smoke exhaust hole (11), a rib plate (12) is provided at the smoke exhaust hole (11), a mounting groove (16) is provided on a side of the rib plate (12) close to the sealing cover (2), a magnet (13) is placed in the mounting groove (16), a magnetic block (21) capable of generating an adsorption force with the magnet (13) is provided on the sealing cover (2), the magnetic block (21) is limitedly located on the sealing cover (2), the size of the mounting groove (16) is larger than the size of the magnet (13), and the position of the magnet (13) in the mounting groove (16) can be adjusted.

2. The valve body of a flue fire check valve according to claim 1, characterized in that: The rib plate (12) comprises a connecting portion (14) connected to the check valve body (1) and a magnet mounting portion (15) for mounting the magnet (13); the connecting portion (14) is provided with two sections, the two sections of the connecting portion (14) are respectively located at two ends of the magnet mounting portion (15); and the width of the magnet mounting portion (15) is greater than the width of the connecting portion (14).

3. The valve body of a flue fire check valve according to claim 2, characterized in that: The ends of the two connecting portions (14) facing away from the magnet mounting portion (15) are both provided with connecting pieces (17) fixed to the check valve body (1), and the width of the connecting piece (17) is greater than the width of the connecting portion (14).

4. The valve body of a flue fire check valve according to claim 1, characterized in that: A partition plate (18) is arranged in the installation groove (16); a plurality of the partition plates (18) are arranged at intervals along the length direction of the installation groove (16); the installation groove (16) forms a plurality of partition grooves (19) through the plurality of the partition plates (18); and the magnet (13) can be located in any one of the partition grooves (19).

5. The valve body of a flue fire check valve according to claim 1, characterized in that: A stamping groove (23) is stamped on a side of the sealing cover (2) facing away from the rib plate (12), and the magnetic block (21) is located in the stamping groove (23).

6. The valve body of a flue fire check valve according to claim 5, characterized in that: A side of the magnetic block (21) facing away from the punching groove (23) protrudes from the punching groove (23).

7. The valve body of a flue fire check valve according to claim 1, characterized in that: The attraction between the magnet (13) and the rib plate (12) is greater than the attraction between the magnet (13) and the magnetic block (21).

8. The valve body of a flue fire check valve according to claim 1, characterized in that: Two sealing covers (2) are symmetrically arranged on the check valve body (1), and a magnetic block (21) is arranged on each of the two sealing covers (2). Two rib plates (12) are arranged, and the two rib plates (12) are provided with the mounting groove (16), and the magnet (13) is placed in each of the two mounting grooves (16), and the two magnets (13) correspond to the two sealing covers (2) one by one.

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