Double-opening-fan flue check valve

Abstract

The utility model discloses a double-opening-fan flue check valve, which relates to the technical field of flue check valves, and comprises a frame body and a convenient-to-disassemble assembly, and the convenient-to-disassemble assembly comprises a pipe body which is connected with the frame body in a penetrating and inserting manner. According to the utility model, the pull ring is arranged, so that the limiting block and the insertion rod are conveniently pulled by a hand, the insertion rod is conveniently detached from the pipe body after being far away from the plate body, the plate body is moved at the moment, residual oil stains on the inner wall of the pipe body are conveniently scraped, cleaning tools are not needed, the operation is easier, and meanwhile, the detached plate body and the windshield piece are easier to clean; the problem that inconvenience exists in the cleaning operation process due to the fact that the inner space of the pipe body is narrow is solved, the inserting rod is far away from the pipe body, the pipe body is convenient to disassemble, and thorough cleaning is further facilitated after the inserting rod is taken down; therefore, the inserting rod, the limiting block and the extension spring can be conveniently installed on the top or the right side of the frame body, different installation requirements are met, and the double-opening effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue check valves, and in particular relates to a double-opening flue check valve. Background Art

[0002] The flue check valve is also called a reverse flow valve, a non-return valve, a back pressure valve, or a one-way valve. This type of valve automatically opens and closes by the force generated by the flow of the medium in the pipeline. It is an automatic valve. Existing flue check valves are usually single-opening flue check valves, which have low ventilation and require tools to clean the installation tube. They are also difficult to install and disassemble, and there is a problem of being installed at a high place that affects cleaning.

[0003] The Chinese patent with the patent number CN202321706494.6 discloses a flue check valve, including a base, a mounting cylinder, a check mechanism and an oil removal mechanism, wherein a mounting cylinder is mounted on the base, a check mechanism is mounted in the mounting cylinder, an oil removal mechanism for cleaning the check mechanism is mounted in the mounting cylinder, and the oil removal mechanism comprises: a base plate, an oil-absorbing cotton wipe, a Velcro, a transmission rod, a first bevel gear, a driving rod and a second bevel gear, an oil-absorbing cotton wipe is mounted on the base plate, and the oil-absorbing cotton wipe is detachably connected to the base plate through the Velcro, a transmission rod is fixed on the lower side of the base plate, a first bevel gear is mounted on the bottom of the transmission rod, a second bevel gear is mounted on the lower side of the first bevel gear, and the second bevel gear is mounted on the driving rod, and the driving rod is rotatably connected to the mounting cylinder; it is convenient to clean the oil and is easy to use. However, in the actual application process of the flue check valve, it is necessary to use tools to clean the mounting cylinder, and the upper structure thereof cannot be used to remove the oil, and it is not easy to disassemble, and there is a problem that it is difficult to remove and thoroughly clean after being installed at a high place.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a double-opening flue check valve to solve the problem that the existing flue check valve needs to be cleaned with the help of tools during actual application, the upper structure cannot be used to remove oil stains, and it is not easy to disassemble. It is difficult to remove and clean it thoroughly after being installed at a high place.

[0006] To solve the above technical problems, the utility model provides a double-opening flue check valve, comprising a frame and an easily disassembled component, the easily disassembled component comprising a tube body inserted into the frame, the inner wall of the tube body being slidably connected with a plate body, two wind shields being movably connected to the plate body, the top and right side of the frame are provided with insertion holes, the top and right side of the plate body are provided with positioning grooves, the insertion holes and the inner walls of the positioning grooves are slidably connected with an insertion rod, a limiting block is installed on the top of the insertion rod, a strong magnet is sleeved on the outside of the insertion rod, the strong magnet is magnetically attracted to the frame, a tension spring is installed between the strong magnet and the limit block for initially inserting the insertion rod into the positioning groove, and a pull ring is installed on the outer wall of the limit block.

[0007] Furthermore, it also includes a check assembly arranged between the plate body and the wind shield, the check assembly includes a plurality of rotating seats connected to one side of the wind shield, a rotating shaft is rotatably connected between two adjacent rotating seats, a connecting block is installed between the outer wall of the rotating shaft and one side of the connecting block, a torsion spring is arranged between the rotating seat and the rotating shaft, the torsion spring is sleeved on the outside of the rotating shaft, and the two ends of the torsion spring are respectively connected to the rotating shaft and the rotating seat.

[0008] Furthermore, an installation cavity is opened inside the rotating seat, the torsion spring is located inside the installation cavity, the two ends of the torsion spring are respectively connected to the outer wall of the rotating shaft and the inner wall of the installation cavity, and a rotation groove is opened on the opposite sides of the two adjacent rotating seats, the rotation groove is connected with the interior of the installation cavity, and the rotating shaft is rotatably connected with the installation cavity and the rotation groove.

[0009] Furthermore, a sealing ring is installed on the outer wall of the windshield, a ventilation slot adapted to the windshield is opened on the plate, the sealing ring is tightly attached to the inner wall of the ventilation slot, and a plurality of arc chamfers are integrally formed on the windshield and the frame.

[0010] Furthermore, a pull ring is installed on the outer wall of the limit block, positioning holes are opened through the four corners of the frame, a jacket is installed on the outer wall of the tube body, an assembly groove is integrally formed between the jacket and the tube body, an anti-slip sleeve is installed on the outer wall of the tube body, and anti-slip patterns are integrally formed on the outer surface of the anti-slip sleeve, and the anti-slip sleeve is located inside the assembly groove.

[0011] Furthermore, the ferromagnet is an annular structure, the inner diameter of the ferromagnet is larger than the diameter of the insertion rod, the outer diameter of the ferromagnet is larger than the outer diameter of the tension spring, a docking groove is opened through the front side of the frame, and the outer wall of the tube is slidably connected to the inner wall of the docking groove.

[0012] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0013] 1. In the utility model, by setting a pull ring, it is convenient for people to manually pull the limit block and the insertion rod. After the insertion rod is away from the plate body, it is convenient to remove it from the tube body. At this time, the plate body is moved to facilitate scraping off the oil stains remaining on the inner wall of the tube body. No cleaning tools are needed, which is easier to operate. At the same time, the disassembled plate body and wind shield are easier to clean, avoiding the problem of inconvenience in the cleaning operation due to the narrow internal space of the tube body. The insertion rod is away from the tube body, which is convenient for disassembling the tube body, and further convenient for thorough cleaning after removal. At the same time, the magnetism of the insertion rod and the jacks located at the top and right side of the frame are used, so as to facilitate the installation of the insertion rod, the limit block and the tension spring on the top or right side of the frame, so as to meet different installation requirements and have a double-opening effect.

[0014] 2. In the utility model, the connecting block is rotatably connected with the rotating seat through a rotating shaft, so that the wind shield is hinged to the plate body, and the torsion spring on one side of the wind shield is used to keep the wind shield away from the plate body in the initial state, and then the wind shield is closed on the plate body. When the smoke accelerated by the exhaust fan passes through the tube body, the wind shield will be opened due to the influence of the airflow. When no smoke passes through, the wind shield is automatically closed by the torsion spring, and the external airflow in the opposite direction of the smoke will be blocked by the closed wind shield. At the same time, when the wind shield is opened, the smoke accelerated by the exhaust fan is basically much larger than the external airflow in the opposite direction of the smoke. Therefore, the automatic non-return effect after no smoke passes through is better, and the structure is simple, the cost is low, and no manual control is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the front structure of a double-opening flue check valve of the utility model;

[0017] Figure 2 This is a schematic diagram of the rear structure of a double-opening flue check valve of the utility model;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of a rotating seat in a double-opening flue check valve of the utility model;

[0019] Figure 4 for Figure 2 A magnified view of the structure at center A;

[0020] Figure 5 for Figure 2 A magnified view of the structure at point B.

[0021] Numbers in the figure:

[0022] 1. Frame;

[0023] 2. Easy-to-disassemble components; 201. tube body; 202. plate body; 203. wind shield; 204. plug hole; 205. plug rod; 206. limit block; 207. tension spring; 208. strong magnet;

[0024] 3. Check assembly; 301. Rotating seat; 302. Rotating shaft; 303. Connecting block; 304. Torsion spring;

[0025] 4. Installation cavity; 5. Rotation groove; 6. Sealing ring; 7. Pull ring; 8. Positioning hole; 9. Arc chamfer; 10. Jacket; 11. Assembly groove; 12. Anti-slip sleeve.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "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.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In actual application, the existing flue check valve needs to be cleaned with tools to clean the installation tube, and the upper structure cannot be used to remove oil stains. It is not easy to disassemble and there is a problem that it is difficult to remove and clean thoroughly after being installed at a high place.

[0031] Embodiment 1

[0032] Depend on Figure 1-Figure 5 The utility model provides a double-opening flue check valve.

[0033] Specifically, by Figure 1 , Figure 2 and Figure 4 The invention provides a frame 1 and a dismantling assembly 2, wherein the dismantling assembly 2 comprises a tube 201 inserted into and penetrated by the frame 1, a plate 202 is slidably connected to the inner wall of the tube 201, two wind shields 203 are movably connected to the plate 202, a plug hole 204 is provided on the top and right side of the frame 1, a positioning groove is provided on the top and right side of the plate 202, a plug rod 205 is slidably connected to the inner wall of the plug hole 204 and the positioning groove, a limit block 206 is installed on the top of the plug rod 205, a strong magnet 208 is sleeved on the outside of the plug rod 205, the strong magnet 208 is magnetically attracted to the frame 1, and a tension spring 207 is installed between the strong magnet 208 and the limit block 206 so as to insert the plug rod 205 into the positioning groove in the initial state;

[0034] The strong magnet 208 is an annular structure, the inner diameter of the strong magnet 208 is larger than the diameter of the insertion rod 205, the outer diameter of the strong magnet 208 is larger than the outer diameter of the tension spring 207, and a docking groove is provided on the front side of the frame 1, and the outer wall of the tube 201 is slidably connected to the inner wall of the docking groove. The strong magnet 208 is an annular structure, through which the insertion rod 205 passes, and during the process, the sliding connection between the insertion rod 205 and the frame 1 is not affected. By setting the docking groove, the tube 201 is convenient for docking with the frame 1; a pull ring 7 is installed on the outer wall of the limit block 206, and positioning holes 8 are provided at the four corners of the frame 1, and a jacket 10 is installed on the outer wall of the tube 201. The jacket 1 An assembly groove 11 is integrally formed between the frame 1 and the tube body 201, an anti-slip sleeve 12 is installed on the outer wall of the tube body 201, and the outer surface of the anti-slip sleeve 12 is integrally formed with anti-slip patterns. The anti-slip sleeve 12 is located inside the assembly groove 11. By setting a pull ring 7, it is convenient for people to manually pull the limit block 206 and the insertion rod 205, so that the installation and removal of the tube body 201 on the frame 1 is more convenient and quick. By setting a positioning hole 8, it is convenient to insert and rotate the bolt to fix the frame 1. By setting the jacket 10 and the assembly groove 11, it is convenient to connect the tube body 201 to the exhaust pipe. By setting the anti-slip sleeve 12 with anti-slip patterns, it is avoided to connect with the tube body 201 The exhaust pipe falls off after that, and a sealing ring 6 is installed on the outer wall of the windshield 203. A ventilation groove adapted to the windshield 203 is opened on the plate body 202, and the sealing ring 6 is in close contact with the inner wall of the ventilation groove. The windshield 203 and the frame body 1 are integrally formed with a plurality of arc chamfers 9. By providing the sealing ring 6 and after the windshield 203 is closed on the plate body 202, the sealing is improved, and by providing the arc chamfer 9, the aesthetics is increased; by providing the pull ring 7, it is convenient for people to manually pull the limit block 206 and the insertion rod 205. After the insertion rod 205 is away from the plate body 202, it is convenient to remove it from the pipe body 201. At this time, the plate body 202 is moved for easy scraping. The oil stains remaining on the inner wall of the tube body 201 do not require the aid of cleaning tools, which makes it easier to operate. At the same time, the disassembled plate body 202 and wind shield 203 are easier to clean, avoiding the problem of inconvenience in the cleaning operation due to the small internal space of the tube body 201. The insertion rod 205 is kept away from the tube body 201, which facilitates the disassembly of the tube body 201 and further facilitates thorough cleaning after removal. At the same time, the magnetism of the insertion rod 205 and the socket 204 located at the top and right side of the frame 1 are utilized, so as to facilitate the installation of the insertion rod 205, the limit block 206 and the tension spring 207 on the top or right side of the frame 1 to meet different installation requirements and have a double-opening effect.

[0035] Embodiment 2

[0036] Furthermore, as a specific implementation of the utility model, the utility model provides a double-opening flue check valve.

[0037] On the basis of the first embodiment, in order to ensure the automatic non-return effect of the double-opening flue check valve, specifically, Figure 2 , Figure 3 and Figure 5 It is given that a non-return assembly 3 is arranged between the plate body 202 and the wind shield 203, and the non-return assembly 3 includes a plurality of rotating seats 301 connected to one side of the wind shield 203, a rotating shaft 302 is rotatably connected between two adjacent rotating seats 301, a connecting block 303 is installed between the outer wall of the rotating shaft 302 and one side of the connecting block 303, a torsion spring 304 is arranged between the rotating seat 301 and the rotating shaft 302, the torsion spring 304 is sleeved on the outside of the rotating shaft 302, and the two ends of the torsion spring 304 are respectively connected to the rotating shaft 302 and the rotating seat 301, and the connecting block 303 is rotatably connected to the rotating seat 301 through the rotating shaft 302, so that the wind shield 203 is connected to the plate body 20 2 is hinged, and the torsion spring 304 on one side of the wind shield 203 is used to make the wind shield 203 away from the plate body 202 in the initial state, so as to close the wind shield 203 on the plate body 202. When the smoke accelerated by the exhaust fan passes through the tube body 201, the wind shield 203 will be opened due to the influence of the airflow. When no smoke passes through, the wind shield 203 is automatically closed by the torsion spring 304, and the external airflow in the opposite direction of the smoke will be blocked by the closed wind shield 203. At the same time, when the wind shield 203 is opened, the smoke accelerated by the exhaust fan is basically much larger than the external airflow in the opposite direction of the smoke. Therefore, the automatic non-return effect after no smoke passes through is better, and the structure is simple, the cost is low, and no manual control is required.

[0038] Further, by Figure 3 It is given that an installation cavity 4 is opened inside the rotating seat 301, and the torsion spring 304 is located inside the installation cavity 4. The two ends of the torsion spring 304 are respectively connected to the outer wall of the rotating shaft 302 and the inner wall of the installation cavity 4, and a rotating groove 5 is opened on the opposite side of the two adjacent rotating seats 301. The rotating groove 5 is connected with the interior of the installation cavity 4, and the rotating shaft 302 is rotatably connected with the installation cavity 4 and the rotating groove 5. By setting the installation cavity 4 and the rotating groove 5, it is convenient to install the torsion spring 304 and allow the rotating shaft 302 to rotate on the rotating seat 301, and the inner diameter of the rotating groove 5 is smaller than the inner diameter of the installation cavity 4, thereby ensuring that the torsion spring 304 is not easy to detach, thereby ensuring the non-return effect of the wind shield 203.

[0039] Working principle:

[0040] By setting the pull ring 7, it is convenient for people to manually pull the limit block 206 and the insertion rod 205. After the insertion rod 205 is away from the plate body 202, it is convenient to remove it from the tube body 201. At this time, the plate body 202 is moved to facilitate scraping off the oil stains remaining on the inner wall of the tube body 201. No cleaning tools are required, which is easier to operate. At the same time, the disassembled plate body 202 and wind shield 203 are easier to clean, avoiding the problem of inconvenience in the cleaning operation caused by the narrow internal space of the tube body 201. The insertion rod 205 is away from the tube body 201, which is convenient for disassembling the tube body 201, and further convenient for thorough cleaning after removal. At the same time, the magnetism of the insertion rod 205 and the jacks 204 located at the top and right side of the frame 1 are used to facilitate the installation of the insertion rod 205, the limit block 206 and the tension spring 207 on the top or right side of the frame 1, so as to meet different installation requirements and have a double-opening effect.

[0041] The connecting block 303 is rotatably connected to the rotating seat 301 through the rotating shaft 302, so that the wind shield 203 is hinged to the plate body 202, and the torsion spring 304 on one side of the wind shield 203 is kept away from the plate body 202 in the initial state, and then the wind shield 203 is closed on the plate body 202. When the smoke accelerated by the exhaust fan passes through the tube body 201, the wind shield 203 will be opened due to the influence of the airflow. When no smoke passes through, the wind shield 203 is automatically closed by the torsion spring 304, and the external airflow in the opposite direction of the smoke will be blocked by the closed wind shield 203. At the same time, when the wind shield 203 is opened, the smoke accelerated by the exhaust fan is basically much larger than the external airflow in the opposite direction of the smoke. Therefore, the automatic non-return effect after no smoke passes is better, and the structure is simple, the cost is low, and no manual control is required.

[0042] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A double-opening flue check valve, comprising: Frame (1); Easy-to-disassemble component (2); The conveniently disassembled component (2) comprises a tube (201) inserted into and connected with the frame (1); the inner wall of the tube (201) is slidably connected with a plate (202); two wind shields (203) are movably connected to the plate (202); the top and right side of the frame (1) are provided with insertion holes (204); the top and right side of the plate (202) are provided with positioning grooves; the insertion holes (204) and the inner wall of the positioning groove are slidably connected. A plug rod (205) is connected, a limit block (206) is installed at the top of the plug rod (205), a strong magnet (208) is sleeved on the outside of the plug rod (205), the strong magnet (208) is magnetically attracted to the frame (1), a tension spring (207) is installed between the strong magnet (208) and the limit block (206) for inserting the plug rod (205) into the positioning groove in the initial state, and a pull ring (7) is installed on the outer wall of the limit block (206).

2. A double-opening flue check valve according to claim 1, characterized in that: The invention also comprises a non-return assembly (3) arranged between the plate body (202) and the windshield (203), wherein the non-return assembly (3) comprises a plurality of rotating seats (301) connected to one side of the windshield (203), a rotating shaft (302) is rotatably connected between two adjacent rotating seats (301), a connecting block (303) is installed between the outer wall of the rotating shaft (302) and one side of the connecting block (303), a torsion spring (304) is arranged between the rotating seat (301) and the rotating shaft (302), the torsion spring (304) is sleeved on the outside of the rotating shaft (302), and the two ends of the torsion spring (304) are respectively connected to the rotating shaft (302) and the rotating seat (301).

3. A double-opening flue check valve according to claim 2, characterized in that: The rotating seat (301) is provided with a mounting cavity (4) inside, the torsion spring (304) is located inside the mounting cavity (4), the two ends of the torsion spring (304) are respectively connected to the outer wall of the rotating shaft (302) and the inner wall of the mounting cavity (4), and the two adjacent rotating seats (301) are provided with a rotating groove (5) on opposite sides, the rotating groove (5) is communicated with the inside of the mounting cavity (4), and the rotating shaft (302) is rotatably connected to the mounting cavity (4) and the rotating groove (5).

4. A double-opening flue check valve according to claim 3, characterized in that: The outer wall of the windshield (203) is provided with a sealing ring (6); a ventilation slot adapted to the windshield (203) is provided on the plate body (202); the sealing ring (6) is in close contact with the inner wall of the ventilation slot; and a plurality of arc chamfers (9) are integrally formed on the windshield (203) and the frame body (1).

5. A double-opening flue check valve according to claim 4, characterized in that: Positioning holes (8) are provided at the four corners of the frame (1); a jacket (10) is installed on the outer wall of the tube body (201); an assembly groove (11) is integrally formed between the jacket (10) and the tube body (201); an anti-slip sleeve (12) is installed on the outer wall of the tube body (201); an anti-slip pattern is integrally formed on the outer surface of the anti-slip sleeve (12); and the anti-slip sleeve (12) is located inside the assembly groove (11).

6. A double-opening flue check valve according to claim 5, characterized in that: The strong magnet (208) is an annular structure, the inner diameter of the strong magnet (208) is larger than the diameter of the insertion rod (205), the outer diameter of the strong magnet (208) is larger than the outer diameter of the tension spring (207), a docking groove is provided through the front side of the frame (1), and the outer wall of the tube (201) is slidably connected to the inner wall of the docking groove.

Images