External assembly type mouth-shaped flow-equalizing exhaust flue

Abstract

The invention relates to the technical field of environmental protection, and discloses an external assembly type mouth-shaped flow-equalizing exhaust flue which comprises vertical flue gas ducts which are sequentially distributed in the vertical direction, the vertical flue gas ducts are pre-embedded with covered edge fixing structures used for being connected with a wall body, and the vertical flue gas ducts are provided with gas inlet mechanisms used for introducing flue gas into the vertical flue gas ducts. Through the arrangement of the pre-embedded edge covering fixing structures, the safety hoisting holes, the flue connecting pieces and the mounting grooves, the upper vertical flue and the lower vertical flue can be tightly assembled together, through the arrangement of the flow equalizing device, the problem that the vertical flue is blocked due to unsmooth exhaust can be solved, and the vertical flue is fixed to the outer side of the wall, so that the vertical flue is prevented from being blocked. According to the utility model, the occupied indoor precious space of a kitchen and a toilet is effectively avoided, the layout of the kitchen and the toilet is more flexible, the utilization rate of the space is improved, a more spacious and comfortable cooking environment is provided for residents, and the tedious steps of indoor hole reservation, formwork erection, formwork removal (painting after installation of a flue product) and the like are omitted through external installation.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, and in particular to an external assembled mouth-shaped uniform flow exhaust flue. Background Art

[0002] At present, the atlas and standards of flue ducts in my country, which have been formulated from the 1980s to the present, all install flue ducts indoors in residential kitchens and bathrooms. In the 1980s, the manufacturing process of flue ducts was simple, and there was no mechanized production. The finished flue ducts were made by manual plastering, so the quality was not guaranteed at that time. Considering the poor product quality of the flue duct itself, the flue ducts were designed to be installed indoors for safety reasons. Indoor installation has many disadvantages.

[0003] First, it takes up effective space; second, the construction is more troublesome. To install the flue duct in the indoor kitchen, a hole for the flue duct must be reserved at the location where the flue duct is installed. The formwork and demoulding of the reserved hole are more troublesome; third, when removing the template from the reserved hole to install the flue duct, due to the large hole of the reserved flue duct, employees often accidentally fall from the hole, causing serious injuries. In addition, during the installation of the flue duct, objects falling from above the hole often injure the personnel who install the flue duct; fourth, after the flue duct is installed, the reserved hole needs to be sealed and waterproofed; fifth, the indoor installation of the flue duct requires painting and tiling; sixth, when the flue duct is installed indoors, the heat of the flue pipe is too high when everyone is cooking, especially in summer, the temperature of cooking in the kitchen is high, and the heat of the flue pipe makes the cooks very uncomfortable. In this way, the indoor installation of the flue duct brings multiple processes and troubles to the developer's construction unit, and adds many safety hazards! It also causes the homeowner to lose the effective utilization space of the already small kitchen, causes physical harm, wastes a considerable amount of money to purchase the area occupied by the smoke duct of the house, and also affects the aesthetic design. Therefore, an external assembled mouth-shaped uniform flow unobstructed exhaust smoke duct is proposed to solve the above problems. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides an external assembled mouth-shaped uniform flow exhaust flue.

[0005] The present invention is implemented by the following technical scheme: an external assembled mouth-shaped uniform flow exhaust flue comprises vertical flue pipes sequentially distributed along the vertical direction, the vertical flue pipe is pre-buried with a edging fixing structure for connecting with a wall, and the vertical flue pipe is provided with an air intake mechanism for introducing flue gas into the vertical flue pipe;

[0006] The edge fixing structure comprises a connecting rod sleeved on the wall, one end of the connecting rod is fixedly connected to a U-shaped plate, the end of the U-shaped plate away from the connecting rod is installed with a threaded rod, the outer ring of the threaded rod is movably sleeved with an extrusion plate, the extrusion plate penetrates a connecting hole sleeved with the threaded rod, and the outer wall of the threaded rod is threadedly connected with a nut;

[0007] The air intake mechanism includes a smoke through-connecting pipe sleeved with the wall and a smoke duct interface connecting pipe pre-buried in the vertical smoke duct. The smoke through-connecting pipe is sleeved with the smoke duct interface connecting pipe. A check valve is installed at one end of the smoke through-connecting pipe away from the smoke duct interface connecting pipe. A flow equalizing device extending into the interior of the vertical smoke duct is provided at one end of the smoke duct interface connecting piece away from the smoke through-connecting pipe.

[0008] As a further improvement of the above scheme, the vertical flue duct includes a flue main body of an annular structure, a flue connector is embedded in the inner circle of one end of the flue main body, and an installation groove for socketing with an adjacent flue connector is opened on the inner wall of the end of the other end of the flue main body.

[0009] As a further improvement of the above solution, the flow equalizing device includes a connecting portion that is sleeved with the smoke duct interface connecting pipe, and the connecting portion extends into one end of the vertical smoke duct and is connected to the flow equalizing portion.

[0010] As a further improvement of the above solution, the width of the current balancing portion gradually decreases from the connecting portion to one side of the current balancing portion.

[0011] As a further improvement of the above solution, a support frame is symmetrically installed on the top surface of the vertical flue at the top, and a multifunctional, non-obstructive wind hood that prevents wind, rain, snow and backflow is installed on the top of the support frame.

[0012] As a further improvement of the above solution, an anti-slip strip is arranged in an annular manner on the outer wall of the nut.

[0013] As a further improvement of the above solution, the material of the flue main body is cement mortar material, and the material of the flue connecting piece is stainless steel material.

[0014] As a further improvement of the above solution, safety lifting holes are symmetrically opened on both sides of the outer wall of the flue connecting piece.

[0015] As a further improvement of the above solution, a check piece is installed on the flow equalizing portion to prevent smoke backflow.

[0016] As a further improvement of the above scheme, a bearing plate is installed at the bottom of the vertical flue at the bottom. The bearing plate is made of cement mortar. The bearing plate is connected to a drain pipe and an exhaust pipe. The drain pipe is installed with a drain valve, and the exhaust pipe is installed with an air release valve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can tightly assemble the upper and lower vertical flue ducts together through the provision of pre-embedded edging fixing structure, safety lifting holes, flue connectors and installation grooves. The provision of a flow equalizing device can solve the problem of poor exhaust and blockage in the vertical flue duct, and fix the vertical flue duct to the outside of the wall, effectively avoiding occupying valuable kitchen and bathroom space indoors, making the layout of the kitchen and bathroom more flexible, improving space utilization, and providing residents with a more spacious and comfortable cooking environment. External installation eliminates the tedious steps of indoor reserved holes, supporting molds, and removing molds (painting after installation of vertical flue duct products).

[0019] 2. The externally installed vertical flue duct of the present invention eliminates the tedious steps of indoor reserved holes, formwork, and mold removal, reduces the difficulty and complexity of construction, improves construction efficiency, and reduces construction costs. At the same time, it avoids the risk of falling due to reserved large holes, and also reduces the possibility of injury to construction workers caused by falling objects from high altitudes, significantly improving the safety of the construction process.

[0020] 3. The present invention can introduce the kitchen smoke into the vertical smoke duct through the arrangement of the air intake mechanism, and finally discharge it from the top vertical smoke duct port. Since the flow equalizing device is a guide structure that evenly guides the flow from bottom to top, and the appearance is a mouth surface structure that gradually decreases from large to small, and the port of the flow equalizing device is located at an angle above, according to Bernoulli's principle, when the smoke enters the flow equalizing device from the smoke through-connecting pipe through the smoke duct interface connector, the flow rate of the smoke is forced to accelerate due to the gradual reduction of the mouth surface, thereby forming a low-pressure area at the flow equalizing device. This increase in flow rate not only accelerates the discharge of smoke, but also forms a relatively high pressure area around the flow equalizing device according to Bernoulli's principle, which helps to further promote the discharge of smoke, thereby improving the exhaust efficiency. The flow equalizing device is a guide structure that evenly guides the flow from bottom to top, and this design can effectively prevent smoke backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A cross-sectional view of

[0024] Figure 4 For the present invention Figure 1 A magnified image of point A;

[0025] Figure 5 For the present invention Figure 3The enlarged view of point B;

[0026] Figure 6 A bottom view of the vertical flue gas duct of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the hemming fixing structure of the present invention;

[0028] Figure 8 It is a side view of the vertical flue gas duct of the present invention;

[0029] Fig. 9 This is a schematic structural diagram of the edge fixing structure in Example 9 of the present invention;

[0030] Fig.10 Schematic diagram of the structure of the current balancing device in Example 4 of the present invention;

[0031] Fig.11 Schematic diagram of the structure of the current balancing device in Example 5 of the present invention;

[0032] Fig.12 Schematic diagram of the structure of the current balancing device in Example 6 of the present invention;

[0033] Fig.13 Schematic diagram of the structure of the current balancing device in Example 7 of the present invention.

[0034] Description of main symbols:

[0035] 11. Air pipe one; 12. Flow equalizing pipe one; 13. Check valve one; 21. Air pipe two; 22. Flow equalizing pipe two; 31. Air pipe three; 32. Flow equalizing groove; 33. Baffle; 34. Valve plate; 35. Restriction plate; 41. Air pipe four; 42. Flow equalizing pipe four; 43. Check valve two; 2. Vertical flue; 201. Flue main body; 202. Flue connector; 203. Mounting groove; 3. Air intake mechanism; 301. Flue gas through-connecting pipe; 302. Flue interface connector; 303. Check valve; 304. Flow equalizing device; 4. Edge fixing structure; 401. Connecting rod; 402. U-shaped plate; 403. Threaded rod; 404. Extrusion plate; 405. Nut; 5. Support frame; 6. Multifunctional non-blocking wind hood to prevent wind, rain, snow and backflow; 7. Safety lifting hole; 8. Load-bearing plate. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0037] Embodiment 1:

[0038] Please combine Figure 1-Figure 9The external assembled mouth-shaped uniform flow exhaust flue of this embodiment comprises vertical flue ducts 2 sequentially distributed along the vertical direction, the vertical flue duct 2 is pre-buried with a edging fixing structure 4 for connecting with the wall, and the vertical flue duct 2 is provided with an air intake mechanism 3 for introducing flue gas into the vertical flue duct 2;

[0039] The edge fixing structure 4 includes a connecting rod 401 sleeved on the wall, one end of the connecting rod 401 is fixedly connected to a U-shaped plate 402, a threaded rod 403 is installed at the end of the U-shaped plate 402 away from the connecting rod 401, the outer ring of the threaded rod 403 is movably sleeved with an extrusion plate 404, the extrusion plate 404 is penetrated with a connecting hole sleeved with the threaded rod 403, the outer wall of the threaded rod 403 is threadedly connected with a nut 405, and the outer wall of the nut 405 is annularly arranged with an anti-slip strip;

[0040] The air intake mechanism 3 includes a smoke through-connecting pipe 301 which is sleeved with the wall and a smoke duct interface connecting pipe 302 which is pre-buried in the vertical smoke duct 2. The smoke through-connecting pipe 301 is sleeved with the smoke duct interface connecting pipe 302. A check valve 303 is installed at one end of the smoke through-connecting pipe 301 which is away from the smoke duct interface connecting pipe 302. A flow equalizing device 304 which extends into the interior of the vertical smoke duct 2 is provided at one end of the smoke duct interface connecting piece 302 which is away from the smoke through-connecting pipe 301.

[0041] The implementation principle of the external assembled mouth-shaped uniform flow exhaust duct in the embodiment of the present application is:

[0042] Embodiment 2:

[0043] The vertical flue 2 includes a flue main body 201 of an annular structure, a flue connector 202 is embedded in the inner circle of one end of the flue main body 201, and a mounting groove 203 for sleeve connection with the adjacent flue connector 202 is provided on the inner wall of the end of the other end of the flue main body 201;

[0044] The material of the flue body 201 is cement mortar, and the material of the flue connector 202 is stainless steel;

[0045] Safety lifting holes 7 are symmetrically provided on both sides of the outer wall of the flue connector 202;

[0046] A bearing plate 8 is installed at the bottom of the bottom vertical flue 2. The bearing plate 8 is made of cement mortar. A drainage pipe and an exhaust pipe are connected to the bearing plate 8. A drain valve is installed on the drainage pipe, and an air release valve is installed on the exhaust pipe.

[0047] The top surface of the vertical flue gas duct 2 at the top is symmetrically installed with a support frame 5, and the top of the support frame 5 is installed with a multifunctional wind cap 6 that prevents wind, rain, snow and backflow.

[0048] Embodiment 3:

[0049] The flow equalizing device 304 includes a connecting portion sleeved with the smoke duct interface connecting pipe 302, and the connecting portion extends into one end of the vertical smoke duct 2 and is connected to the flow equalizing portion;

[0050] The width of the current balancing portion gradually decreases from the connecting portion to one side of the current balancing portion;

[0051] A check piece is installed on the flow equalizing part to prevent smoke backflow;

[0052] The connection methods between the smoke duct interface connecting pipe 302 and the smoke through-connecting pipe 301 on the vertical smoke duct 2 and between the smoke through-connecting pipe 301 and the check valve 303 include but are not limited to any form such as bolts, plug-ins, and clamps. The wall is provided with a through-wall hole for installing the smoke through-connecting pipe 301, and the through-wall hole has a certain inclination angle at the initial stage of opening, and the inclination angle is downwardly inclined from indoors to outdoors. At the same time, the smoke through-connecting pipe 301 placed in the through-wall hole also has a certain inclination angle to prevent rainwater from flowing back into the house.

[0053] The flow equalizing device 304 is tightly connected to the smoke duct interface connector 302, and then the vertical smoke duct 2 is brought close to the wall. Then, according to the size of the smoke through-connecting pipe 301, a hole (through-the-wall hole) is drilled at the corresponding wall position. Then, one end of the smoke through-connecting pipe 301 is tightly connected to the smoke duct interface connector 302 through bolts or sockets. Then, the smoke through-connecting pipe 301 is placed in the through-the-wall hole. At the same time, the smoke through-connecting pipe 301 is extended on the side of the wall close to the house. A section is provided to facilitate the later installation of the check valve 303. After the staff connects the check valve 303 to the exhaust pipe of the household, the generated smoke will pass through the smoke through-connecting pipe 301 and the smoke duct interface connector 302 into the flow equalizing device 304, and then be ejected from the flow equalizing device 304. Since the flow equalizing device 304 is a flow guiding structure that evenly distributes the flow from bottom to top, and its shape is a mouth surface structure that gradually decreases from large to small, and the port of the flow equalizing device 304 is located at an oblique upper position (such as Figure 5As shown in FIG. 1 , according to the Bernoulli principle, when the smoke enters the flow equalizer 304 from the smoke through-connecting pipe 301 through the smoke duct interface connector 302, the flow velocity of the smoke is forced to increase due to the gradual reduction of the opening surface, thereby forming a low-pressure area at the flow equalizer 304. This increase in flow velocity not only accelerates the exhaust of the smoke, but also forms a relatively high pressure area around the flow equalizer 304 according to the Bernoulli principle, which helps to further promote the exhaust of the smoke, thereby improving the exhaust efficiency. Arrangement 304 is a diversion structure that evenly diverts from bottom to top. This design can effectively prevent smoke backflow. It should be noted that after the smoke through-connecting pipe 301 is placed inside the wall-penetrating hole, the connection gap between the wall-penetrating hole, the smoke through-connecting pipe 301 and the wall 1 will be backfilled and sealed to prevent water leakage and air leakage here. At the connection between the upper and lower vertical smoke ducts 2, cement mortar or refractory sealant can be applied, so that the upper and lower vertical smoke ducts 2 can be quickly connected and the overall airtightness can be achieved at the same time.

[0054] Embodiment 4:

[0055] like Fig.10 As shown: the flow equalizing device 304 includes an air pipe 11 which is sleeved with the smoke duct interface connecting pipe 302, and the air pipe 11 extends into one end of the vertical smoke duct 2 and is connected to a flow equalizing pipe 12 which is arranged obliquely upward, and the flow equalizing pipe 12 is connected to a check valve 13.

[0056] Embodiment 5:

[0057] like Fig.11 As shown: the flow equalizing device 304 includes an air pipe 21 sleeved with the smoke duct interface connecting pipe 302, and one end of the air pipe 21 extending into the vertical smoke duct 2 is connected to a flow equalizing pipe 22 arranged obliquely upward.

[0058] Embodiment 6:

[0059] like Fig.12 As shown: the flow equalizing device 304 includes a gas pipe 31 sleeved with the smoke duct interface connecting pipe 302, and one end of the gas pipe 31 extending into the vertical smoke duct 2 is connected to a U-shaped flow equalizing groove 32 arranged obliquely upward, and a check component is arranged between the flow equalizing groove 32 and the gas pipe 31;

[0060] The non-return component includes a baffle plate 33 fixedly connected to an opening on one side of the air pipe 31 near the equalizing groove 32, the baffle plate 33 is penetrated by an air hole 1, and a valve plate 34 slidably connected to the inner wall of the equalizing groove 32 is installed on the side of the baffle plate 34 away from the air pipe 31, and a limiting plate 35 fixedly connected to the equalizing groove 32 is arranged on the side of the valve plate 34 away from the baffle plate 33, a spring is fixedly connected between the limiting plate 35 and the valve plate 34, and the valve plate 34 is penetrated by an air hole 2. When there is smoke inside the wall, the smoke enters the air pipe 31 along the smoke through-connecting pipe 301, and the smoke is discharged from the air hole 1 on the baffle plate 34, pushing the valve plate 34 to move, so that the indoor smoke enters the vertical smoke duct 2. When there is no smoke in the room, under the action of the spring, the valve plate 34 conflicts with the baffle plate 33, and the valve plate 34 blocks the air hole 1 to prevent the inside of the vertical smoke duct 2 from flowing back from the air pipe 31 to the room along it.

[0061] Embodiment 7:

[0062] like Fig.13 As shown: the flow equalizing device 304 includes a gas pipe 41 which is sleeved with the smoke duct interface connecting pipe 302, and the gas pipe 41 extends into one end of the vertical smoke duct 2 and is connected to a flow equalizing pipe 42, and the flow equalizing pipe 42 is connected to a check valve 43.

[0063] Embodiment 8:

[0064] In addition to the above, the edge fixing structure 4 can also be a tripod, expansion screws, bracket links, bolts, screws, etc., which are not limited here.

[0065] Embodiment 9:

[0066] like Fig. 9 As shown, the hemming mechanism 4 can have a second operation method, and the hemming mechanism 4 includes a U-shaped plate 402, and a threaded rod 403 penetrating the U-shaped plate 402;

[0067] The staff can open installation grooves on both sides of the U-shaped plate 402 on the wall, and then install the threaded rod 403 inside the installation groove, and then rotate the nut 405 to make the nut 405 move along the threaded rod 403 until the nut 405 squeezes the extrusion plate 404, so that the extrusion plate 404 is tightly in contact with the flue body 201, and the vertical flue 2 is clamped and fixed.

[0068] During the working process, a supporting groove is reserved on the concrete beam of the wall when the house is built, so that the connecting rod 401 can be fixed. When installing the vertical flue duct 2, the connecting rod 401 is first fixed to the inside of the supporting groove, and then the hook of the crane is used to hook the safety lifting hole 7 on the flue connector 202, and then the vertical flue duct 2 is lifted, and the flue connector 202 is aligned with the installation groove 203, so that the upper and lower flue gases can be assembled together. During the assembly process, the installation of every two vertical flue ducts 2 is set as a stage. The staff inserts the extrusion plate 404 along the threaded rod 403 so that the extrusion plate 404 fits the outer wall of the flue body 201, and then puts the nut 405 on the end of the threaded rod 403, and rotates the nut 405 so that the nut 405 Move along the threaded rod 403 until the nut 405 squeezes the extrusion plate 404, so that the extrusion plate 404 is tightly in contact with the flue body 201, and the vertical flue 2 is clamped and fixed. Then, after the vertical flue duct 2 is fixed, the flue connector 202 and the mounting groove 203 can be used to put a vertical flue duct 2 on top of the vertical flue duct 2, and then another vertical flue duct 2 is put on top of the vertical flue duct 2, and then the vertical flue duct 2 is fixed and clamped by using the edging, so that every other vertical flue duct 2 is clamped by using the edging, and then the support frame 5 and the multifunctional non-obstructive wind, rain, snow and backflow prevention hood 6 can be installed on the top of the top vertical flue duct 2 to prevent a large amount of rainwater from falling into the interior of the vertical flue duct 2.

[0069] The present invention can tightly assemble the upper and lower vertical flue ducts together by pre-embedded edging fixing structures, safety lifting holes, flue connectors and installation grooves. The flow equalizing device can solve the problem of poor exhaust and blockage in the vertical flue duct, and the vertical flue duct is fixed to the outside of the wall, effectively avoiding occupying valuable kitchen and bathroom space indoors, making the kitchen and bathroom layout more flexible, improving space utilization, and providing residents with a more spacious and comfortable cooking environment. The external installation eliminates the tedious steps of indoor reserved holes, supporting molds, and removing molds (painting the flue duct product after installation).

[0070] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An external assembled mouth-shaped uniform flow exhaust flue, comprising vertical flue ducts (2) distributed in sequence along the vertical direction, characterized in that: The vertical smoke duct (2) is pre-buried with an edge fixing structure (4) for connecting to a wall, and the vertical smoke duct (2) is provided with an air intake mechanism (3) for introducing smoke into the vertical smoke duct (2); The edging fixing structure (4) comprises a connecting rod (401) sleeved on the wall, one end of the connecting rod (401) is fixedly connected to a U-shaped plate (402), the end of the U-shaped plate (402) away from the connecting rod (401) is installed with a threaded rod (403), the outer ring of the threaded rod (403) is movably sleeved with an extrusion plate (404), the extrusion plate (404) is penetrated by a connection hole sleeved with the threaded rod (403), and the outer wall of the threaded rod (403) is threadedly connected with a nut (405); The air intake mechanism (3) comprises a smoke through-connecting pipe (301) sleeved with the wall and a smoke duct interface connecting pipe (302) pre-buried in the vertical smoke duct (2); the smoke through-connecting pipe (301) is sleeved with the smoke duct interface connecting pipe (302); a check valve (303) is installed at one end of the smoke through-connecting pipe (301) away from the smoke duct interface connecting pipe (302); and a flow equalizing device (304) extending into the interior of the vertical smoke duct (2) is provided at one end of the smoke duct interface connecting piece (302) away from the smoke through-connecting pipe (301).

2. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 1, characterized in that: The vertical flue (2) comprises a flue main body (201) of an annular structure, a flue connector (202) is embedded in the inner circle of one end of the flue main body (201), and a mounting groove (203) for sleeve connection with an adjacent flue connector (202) is provided on the inner wall of the end of the other end of the flue main body (201).

3. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 1, characterized in that: The flow equalizing device (304) comprises a connecting portion sleeved with the smoke duct interface connecting pipe (302), and the connecting portion extends into one end of the vertical smoke duct (2) and is connected to the flow equalizing portion.

4. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 3, characterized in that: The width of the current balancing portion gradually decreases from the connecting portion to one side of the current balancing portion.

5. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 1, characterized in that: A support frame (5) is symmetrically mounted on the top surface of the vertical flue gas duct (2) at the top, and a multifunctional wind cap (6) for preventing wind, rain, snow and backflow is mounted on the top of the support frame (5).

6. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 1, characterized in that: The outer wall of the nut (405) is provided with an anti-slip strip in a ring shape.

7. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 2, characterized in that: The flue main body (201) is made of cement mortar, and the flue connecting piece (202) is made of stainless steel.

8. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 2, characterized in that: Safety lifting holes (7) are symmetrically provided on both sides of the outer wall of the flue connecting piece (202).

9. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 3, characterized in that: A check piece for preventing smoke from flowing back is installed on the flow balancing part.

10. The external assembled mouth-shaped uniform flow exhaust flue as claimed in claim 1, characterized in that: A bearing plate (8) is installed at the bottom of the vertical flue (2) at the bottom. The bearing plate (8) is made of cement mortar. A drainage pipe and an exhaust pipe are connected to the bearing plate (8). A drain valve is installed on the drainage pipe, and an exhaust valve is installed on the exhaust pipe.

Images