A deodorizing device for fixing a combined sewer manhole rainwater outlet and its installation method

Abstract

The present invention discloses an anti-odor device and installation method for fixing a combined manhole rainwater outlet, belonging to the field of fixed combined manhole rainwater outlet anti-odor. The device of the present invention comprises several height adjustment rods fixed inside the combined manhole, a height adjustment rod is provided on both sides of each anti-odor module, and adjacent anti-odor modules share one height adjustment rod; the backflow port cover is composed of a cylindrical rainwater outlet connecting pipe orifice and a tile-shaped connecting portion, and the tile-shaped connecting portion is provided on the periphery of the rainwater outlet connecting pipe orifice; each anti-odor module is connected to the rainwater pipe on the manhole wall through the rainwater outlet connecting pipe orifice of the backflow port cover, and the connecting portions on the upper and lower sides of the backflow port cover are connected to two fixed ring bands, the other ends of the fixed ring bands are connected to fastening joints, and the other ends of the fastening joints are slidably provided on the corresponding height adjustment rods. The present invention can effectively prevent the escape of odor in the manhole, while improving the service life and effectiveness of the anti-odor facility, and is easy to promote and use.

Description

Technical Field

[0001] The invention belongs to the field of odor prevention of fixed combined sewer outlets, in particular to an odor prevention device for a fixed combined sewer inspection well rainwater outlet and an installation method thereof. Background Art

[0002] The urban drainage system is an engineering facility system that treats and removes urban sewage and rainwater. It is an important part of urban public facilities, and the drainage network is an important part of the urban drainage system. It can be divided into two types: separate and combined systems. The separate drainage system has two independent drainage pipe systems for sewage and rainwater, which collect and transport sewage and rainwater respectively; while the combined drainage system has only one drainage pipe system, where rainwater and sewage are combined. In order to collect rainwater in the combined drainage system, it is necessary to set up rainwater inlets on the surface road surface, and the rainwater inlets are connected to the atmosphere and manholes at the same time. Due to the closed and oxygen-deficient environment in the manhole, a large amount of odorous gases such as hydrogen sulfide, ammonia, and mercaptans will be generated and enter the atmosphere through the rainwater inlets, affecting the quality of life of residents and the urban environment.

[0003] Currently, no anti-odor device is installed at the end of the rainwater pipe of the existing combined sewer inspection well, and there is a lack of supporting installation components and methods for the installation and fixation of the anti-odor device. Summary of the Invention

[0004] The object of the present invention is to overcome the above-mentioned shortcomings of the prior art and to provide a deodorizing device for fixing a rainwater outlet of a combined sewer manhole and an installation method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A deodorizing device for fixing a rainwater outlet of a combined sewer manhole, comprising a plurality of deodorizing modules, a backflow outlet cover and a height adjustment rod;

[0007] Several height adjustment rods are fixed inside the combined manhole, one of which is provided on both sides of each deodorization module and adjacent deodorization modules share one height adjustment rod;

[0008] The backflow port cover is composed of a cylindrical rainwater outlet connecting pipe orifice and a tile-shaped connecting portion, and the tile-shaped connecting portion is arranged on the periphery of the rainwater outlet connecting pipe orifice;

[0009] Each odor-proof module is connected to the rainwater pipe on the well wall through the rainwater outlet connecting pipe of the backflow port cover. The connecting parts on the upper and lower sides of the backflow port cover are connected to two fixed ring belts, and the other ends of the fixed ring belts are connected to fastening joints, and the other ends of the fastening joints are slidably arranged on the corresponding height adjustment rod.

[0010] Further, each anti-odor module is a first anti-odor module, a second anti-odor module or a third anti-odor module;

[0011] The first deodorizing module includes an deodorizing diversion pipe connected to the rainwater pipe, a one-way pressure relief device is provided on the deodorizing diversion pipe, and a cover plate is provided at the end of the deodorizing diversion pipe. The cover plate is hinged to the upper part of the deodorizing diversion pipe and tilted in the direction of water flow from the deodorizing diversion pipe. The length of the cover plate is greater than the outer diameter of the deodorizing diversion pipe.

[0012] The second deodorizing module includes a deodorizing diversion pipe, a duckbill valve at the end of which is provided with a one-way pressure relief device. The duckbill valve is opened when rainwater is collected and is closed when there is no rainwater.

[0013] The third deodorizing module includes a deodorizing diversion pipe, at the end of which is provided a deodorizing silica gel bag, and a one-way pressure relief device. The deodorizing silica gel bag opens when collecting rainwater and is closed when there is no rainwater.

[0014] Furthermore, a connecting bayonet is provided on the outer wall of the rainwater outlet connecting pipe orifice, and two rows of first threaded holes are provided on the connecting parts on the upper and lower sides of the rainwater outlet connecting pipe orifice, and the two rows of first threaded holes are symmetrically arranged about the rainwater outlet connecting pipe orifice;

[0015] The deodorizing module is provided with a buckle, and the buckle on the deodorizing module is matched and connected with the connecting bayonet.

[0016] Furthermore, the fixing ring belt is in an arc shape as a whole, and a plurality of second threaded holes are provided on both sides of the fixing ring belt;

[0017] Part of the second threaded holes on the fixed ring band is fixed to the first threaded holes of the backflow port cover by bolts;

[0018] The cross section of the fixed ring belt is U-shaped.

[0019] Furthermore, the fastening joint is a ring belt with raised structures on both sides, a left eccentric perforated threaded opening is provided inside the raised structure on one side, a right non-threaded notch is provided at the same position inside the raised structure on the other side, and a third threaded hole is provided on the ring belt of the fastening joint;

[0020] Furthermore, the protruding structure of the fastening joint is located in the U-shaped groove of the fixing ring band, and the third threaded hole on the fastening joint and the remaining second threaded holes on the fixing ring band are fixed by bolt connection.

[0021] Furthermore, the height adjustment rod is an I-shaped steel and is provided with two long slots 5-2 and two eccentric perforated threaded holes;

[0022] The eccentric perforated threaded hole is used to fix the height adjustment rod;

[0023] The long grooves are used to respectively connect fastening joints of different heights.

[0024] Furthermore, the backflow port cover, the fastening joint and the height adjustment rod are made of polyvinyl chloride.

[0025] A method for installing a fixed deodorizing device for a combined manhole rainwater outlet, characterized in that:

[0026] A plurality of height adjustment rods are fixed inside the combined manhole, the height adjustment rods are located on both sides of the deodorization module, and adjacent deodorization modules share one height adjustment rod;

[0027] Use the backflow cover to connect the rainwater pipe and the deodorization module, set the connection of the rainwater pipe inside the opening of the rainwater outlet connecting pipe of the backflow cover, and set the guide pipe of the deodorization module around the outer periphery of the opening of the rainwater outlet connecting pipe;

[0028] Two fixing rings are provided on the tile-shaped connection portion on the upper side of the backflow port cover, and the threaded holes at the connection between the two are fixed by bolts;

[0029] Two fixing rings are provided on the tile-shaped connection portion on the lower side of the backflow port cover, and the threaded holes at the connection between the two are fixed by bolts;

[0030] Connect the other end of the fixing ring belt to the fastening joint, and set the other end of the fastening joint on the height adjustment rod.

[0031] Furthermore, the height adjustment rod is fixed in the following manner: the height adjustment rod is fixed inside the combined flow well by using a bolt and an eccentric through-hole threaded hole, and one end of the bolt is fixed to the well wall;

[0032] The fastening joint is installed as follows: the protruding structure of the fastening joint connection end is arranged in the notch of the fixing ring belt, and the fastening joint is connected to the second threaded hole on the fixing ring belt through the third threaded hole by bolts.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention is used to fix the deodorization device of the rainwater outlet of the combined manhole. The deodorization module is connected to the end of the rainwater pipe in the manhole by a connector. It can effectively solve the deodorization problem at the end of the rainwater outlet connecting pipe in the manhole, as well as the structural and functional problems generated during the installation of the facility. The present invention is also suitable for connecting rainwater pipes at different heights in the manhole. By providing a height adjustment rod, the deodorization facilities of the rainwater outlet connecting pipes at different heights in the manhole can be connected to each other, which is more in line with the actual project situation and has more engineering application value. The present invention has a simple structure, a reasonable design, and high working reliability. It can effectively prevent the escape of odor in the manhole, while improving the service life and effect of the deodorization facilities, and is easy to promote and use.

[0035] Furthermore, the components of the present invention are connected to each other by bolts, and the gaps can be controlled by adjusting the tightness of the bolts, thereby improving the service life and effect of the deodorization facility.

[0036] Furthermore, the backflow port cover, the fastening joint and the height adjustment rod are made of polyvinyl chloride, which has good flexibility and is easy to install.

[0037] The installation method for fixing the deodorizing device of the rainwater outlet of a combined sewer inspection well of the present invention has few steps and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a plan diagram of the deodorization facility;

[0039] Figure 2 These are the elevation drawings of three types of odor-proof modules. Figure 2 Corresponding to the first deodorization module, Figure 2 Corresponding to the second anti-odor module, Figure 2 Corresponding to the third anti-odor module;

[0040] Figure 3 This is the plan view of the backflow port cover;

[0041] Figure 4 This is a cross-sectional view of the backflow port cover;

[0042] Figure 5 It is the plan view of the fixed ring belt;

[0043] Figure 6 It is a top view of the fixed ring belt structure;

[0044] Figure 7 It is a cross-sectional view of the fixed ring belt;

[0045] Figure 8 It is the plan view of the fastening joint;

[0046] Figure 9 It is a top view of the fastening joint structure;

[0047] Figure 10 It is a cross-sectional view of the fastening joint;

[0048] Figure 11 Adjust the pole elevation for height;

[0049] Figure 12 Adjust the rod profile for height;

[0050] Figure 13 Schematic diagram of the slider.

[0051] Among them: 2—backflow cover; 3—fixing ring; 4—fastening joint; 5—height adjustment rod; 6—slider; 1-1—first deodorizing module; 1-2—second deodorizing module; 1-3—third deodorizing module; 1-4—deodorizing diversion pipe; 1-5—cover plate; 1-6—one-way pressure relief device; 1-7—first clamp; 1-8—duckbill valve; 1-9—second clamp; 1-10—deodorizing silicone bag; 2-1—rainwater inlet connecting pipe outlet; 2-2—first threaded hole; 2-3—deodorizing module connecting port; 3-1—second threaded hole; 4-1—left eccentric perforated threaded port; 4-2—third threaded hole; 4-3—right non-threaded notch; 5-1—first eccentric perforated threaded hole; 5-2—long slot; 6-1—second eccentric perforated threaded hole. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] The present invention is described in further detail below with reference to the accompanying drawings:

[0055] See also Figure 1 , Figure 1 This is a schematic plan view of the deodorization facility. As can be seen, the first, second, and third deodorization modules 1-1, 1-2, and 1-3 are connected to the rainwater pipe via connectors. The rainwater pipe runs through the sidewall of the combined manhole, which is equipped with a drainage pipe. One or more deodorization modules can be selected based on project needs.

[0056] See also Figure 2 , Figure 2These are the elevation drawings of three types of odor-proof modules. Figure 2 Corresponding to the first deodorizing module, the first deodorizing module 1-1 includes a deodorizing diversion pipe 1-4 connected to the rainwater pipe. The deodorizing diversion pipe 1-4 is provided with a one-way pressure relief device 1-6. A cover plate 1-5 is provided at the end of the deodorizing diversion pipe 1-4. The cover plate 1-5 is hinged to the upper portion of the deodorizing diversion pipe 1-4 and tilted in the direction of the water flow from the deodorizing diversion pipe 1-4, which can facilitate the entry of rainwater in the deodorizing diversion pipe 1-4 into the inspection well. The length of the cover plate 1-5 is greater than the outer diameter of the deodorizing diversion pipe 1-4, thereby ensuring the one-way opening of the cover plate 1-5 and preventing the cover plate 1-5 from rotating in the opposite direction. During use, rainwater enters the deodorizing diversion pipe 1-4 through the rainwater outlet connecting pipe. The water flow pushes the cover plate 1-5 to rotate, thereby connecting the deodorizing diversion pipe 1-4 to the internal space of the combined manhole, allowing rainwater to enter the combined manhole and then be discharged from the combined sewer pipe. The cover plate is one-way openable, that is, it can only rotate under the push of the water flow in the odor-proof diversion pipe and will not rotate under the pressure in the combined inspection well, preventing the gas and water in the combined inspection well from entering the odor-proof diversion pipe, thereby effectively preventing odor from entering the atmosphere and effectively protecting the environment. Figure 2 Corresponding to the second deodorization module, the second type of deodorization module 1-2 includes a duckbill valve 1-8 and a deodorization diversion tube 1-4 connected to the duckbill valve at one end. The deodorization diversion tube 1-4 and the duckbill valve 1-8 are connected by a first clamp 1-7. The deodorization diversion tube 1-4 is equipped with a one-way pressure relief device 1-6. Due to its characteristic, the duckbill valve 1-8 can open when rainwater is collected and remain closed when no rainwater is collected. During use, rainwater enters the deodorization diversion tube 1-4 through the rainwater outlet connection pipe. The water flow pushes the duckbill valve 1-8 open, thereby connecting the deodorization diversion tube 1-4 with the interior space of the combined manhole, allowing rainwater to enter the combined manhole and then be discharged through the combined sewer pipe. Due to its characteristics, the duckbill valve 1-8 will only open under the push of the water flow in the odor-proof diversion pipe 1-4, and will not open under the pressure in the combined inspection well, preventing the gas and water in the combined inspection well from entering the odor-proof diversion pipe 1-4, thereby effectively preventing the problem of odor escaping from the combined inspection well. Figure 2 The third odor-proof module includes an odor-proof silicone bag 1-10 and an odor-proof drainage tube 1-4 connected to the silicone bag at one end. The drainage tube 1-4 is connected to the odor-proof silicone bag 1-10 via a second clamp 1-9. A one-way pressure relief device 1-6 is provided on the drainage tube 1-4. The odor-proof silicone bag 1-10 is integrally formed and remains sealed, similar in shape to a duckbill valve. Due to the elasticity of the silicone, the end of the odor-proof silicone bag 1-10 opens when rainwater collects and automatically recloses when rainwater is gone, preventing odor from escaping.

[0057] See also Figure 3 and Figure 4 , Figure 3 and Figure 4 The backflow vent cover is shown in plan and cross-sectional views, respectively. The backflow vent cover 2 includes a cylindrical gully connection pipe opening 2-1, with a tile-shaped connection portion provided on its periphery. A connection clip 2-3 is provided on the outer wall of the gully connection pipe opening 2-1. Two rows of first threaded holes 2-2 are provided on the upper and lower connection portions of the gully connection pipe opening 2-1. The two rows of first threaded holes 2-2 are symmetrically arranged about the gully connection pipe opening 2-1. The number of first threaded holes 2-2 can be adjusted according to the actual installation dimensions. The backflow vent cover 2 is made of polyvinyl chloride.

[0058] See also Figure 5-Figure 7 , Figure 5 、 Figure 6 、 Figure 7 The figures are a plan view of the fixing band, a top view of the fixing band structure, and a cross-sectional view of the fixing band. The fixing band 3 is generally arc-shaped, with multiple second threaded holes 3-1 located on its left and right sides. The cross-section of the fixing band 3 is U-shaped. The number of second threaded holes 3-1 can be adjusted based on the actual installation dimensions. The fixing band 3 is made of polyvinyl chloride.

[0059] See also Figures 8-10 , Figure 8 、 Figure 9 、 Figure 10 The following diagrams show a plan view of the fastening joint, a top view of the fastening joint structure, and a cross-sectional view of the fastening joint. Fastening joint 4 is a ring band with raised structures on both sides. One raised structure has an eccentric perforated threaded opening 4-1 on the left side, while the other raised structure has a non-threaded notch 4-3 on the right side at the same position. The ring band of fastening joint 4 is provided with third threaded holes 4-2. The number of third threaded holes 4-2 can be adjusted according to the actual installation size. The fixing ring band 4 is made of polyvinyl chloride.

[0060] See also Figure 11 and Figure 12 , Figure 11 For height adjustment pole elevation drawing, Figure 12 This is a cross-sectional view of the height adjustment rod. The height adjustment rod 5 has an "I"-shaped cross-section. The rod is provided with two eccentric threaded holes 5-1 and a slot 5-2. The two eccentric threaded holes 5-1 are used to secure the height adjustment rod, while the slot 5-2 is used to connect fastening connectors 4 at different heights. The "I"-shaped structure offers excellent engineering performance, and the width of the slot 5-2 matches the width of the fastening connector 4.

[0061] See also Figure 13 , Figure 13This is a schematic diagram of a slider. Slider 6 comprises a rectangular block with a second eccentric perforated threaded hole 6-1 disposed therein, which is used to connect and secure to the fastening joint 4 located on the other side of the height adjustment rod 5. The diameter of the threaded hole 6-1 matches the diameter of the second threaded holes 3-1 in the raised structures on either side of the fastening joint, and the width of the rectangular block matches the width of the slot in the height adjustment rod 5.

[0062] A deodorizing device for fixing a combined sewer manhole rainwater outlet, comprising a plurality of deodorizing modules;

[0063] The deodorizing module is connected to the rainwater pipe on the well wall through the rainwater outlet connecting pipe orifice 2-1 of the backflow port cover 2. Two fixing ring bands 3 are connected to the upper and lower sides of the backflow port cover 2. Part of the second threaded hole 3-1 on the fixing ring band 3 is fixed with the first threaded hole 2-2 of the backflow port cover 2 by bolts. The other end of the fixing ring band 3 is connected with a fastening joint 4. The convex structure of the fastening joint 4 is set in the U-shaped groove of the fixing ring band 3. The fastening joint 4 is connected to the second threaded hole 3-1 on the fixing ring band 3 by bolts through the third threaded hole 4-2; the convex structure at the other end of the fastening joint 4 is set in the long groove 5-2 on the height adjustment rod 5, and the other side of the long groove 5-2 is connected to the slider 6. The right side of the convex structure has no threaded groove 4-3 and is connected with the second eccentric perforated threaded hole 6-1 by bolts;

[0064] Several height adjustment rods 5 are fixed inside the combined manhole. Each odor-proof module is provided with a height adjustment rod 5 on both sides, and adjacent odor-proof modules share one height adjustment rod 5. The odor-proof modules are all connected and fixed on the height adjustment rods 5 through the above components.

[0065] In another embodiment, a plurality of fastening joints 4 are connected to each other, and the left eccentric perforated threaded openings 4 - 1 of adjacent fastening joints 4 are connected to the right non-threaded notches 4 - 3 .

[0066] During use, the selected deodorizing device 1 is installed to the rainwater outlet connecting pipe orifice 2-1 according to the project requirements. The backflow outlet cover 2 is connected to the rainwater outlet connecting pipe orifice 2-1. The first threaded holes 2-2 provided on the upper and lower sides of the backflow outlet cover 2 are connected to the second threaded holes 3-1 of the fixing ring 3 using bolts. At this time, the fastening joint 4 can be placed on the notch of the fixing ring 3 and the two can be connected and fixed with bolts. The number of fastening joints 4 required is determined according to the actual project requirements. The left and right raised structures on different fastening joints 4 can be connected with bolts. The specific connection and installation method is as follows:

[0067] A deodorizing device for fixing the rainwater outlet of a combined sewer manhole, the installation method is as follows:

[0068] Multiple height adjustment rods 5 are fixed inside the combined sewer. The height adjustment rods 5 are located on both sides of the deodorization module, and adjacent deodorization modules share one height adjustment rod 5. The height adjustment rods 5 are fixed inside the combined sewer using bolts and eccentric through-hole threaded holes 5-1, with one end of the bolt fixed to the well wall.

[0069] Use the backflow cover 2 to connect the rainwater pipe and the deodorization module. Set the connection point of the rainwater pipe inside the rainwater outlet connecting pipe opening 2-1 of the backflow cover 2. Put the guide pipe of the deodorization module around the outer periphery of the rainwater outlet connecting pipe opening 2-1 and connect it with the buckle on the deodorization module through the connecting bayonet 2-3.

[0070] Two fixing rings 3 are provided on the tile-shaped connection portion on the upper side of the backflow port cover 2, and the threaded holes at the connection between the two are fixed by bolts;

[0071] Two fixing rings 3 are provided on the tile-shaped connection portion on the lower side of the backflow port cover 2, and the threaded holes at the connection between the two are fixed by bolts;

[0072] Connect the other end of the fixing ring band 3 to the fastening joint 4. The protrusion structure of the connecting end of the fastening joint 4 is set in the notch of the fixing ring band 3. The fastening joint 4 is connected to the second threaded hole 3-1 on the fixing ring band 3 through the third threaded hole 4-2 by bolts.

[0073] The protruding structure at the other end of the fastening joint 4 is arranged in the long slot 5-2 of the height adjustment rod 5. A slider 6 is provided on the other side of the long slot 5-2, and the unthreaded notch 4-3 and the threaded hole 6-1 are connected by bolts.

[0074] The present invention is suitable for rainwater pipes of different heights coexisting in an inspection well. A height adjustment rod 5 is used to meet the connection requirements of rainwater pipes of different heights and the deodorizing module. The width of the long groove 5-2 on the height adjustment rod 5 is the same as the width of the fastening joint 4. One side of the height adjustment rod 5 is connected to the fastening joint 4, and the other side can be connected to the slider 6. The right side non-threaded groove 4-3 and the second eccentric perforated threaded hole 6-1 are connected by bolts to meet the connection requirements of different heights.

[0075] Through the above connection process and method, the odor prevention problem at the end of the rainwater outlet connecting pipe in the inspection well, as well as the structural and functional problems generated during the installation of the facility can be effectively solved.

[0076] The present invention utilizes bolts to realize the connection of various structures, and the tightness of the entire system is controlled by controlling the screwing degree of each bolt.

[0077] The above content is only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A deodorizing device for fixing a combined manhole rainwater outlet, characterized in that: It comprises a plurality of deodorizing modules, a backflow port cover (2) and a height adjustment rod (5); A plurality of height adjustment rods (5) are fixed inside the combined manhole, with one height adjustment rod (5) being provided on both sides of each odor-proof module and adjacent odor-proof modules sharing one height adjustment rod (5); The backflow port cover (2) is composed of a cylindrical rainwater outlet connecting pipe orifice (2-1) and a tile-shaped connecting portion, and the tile-shaped connecting portion is arranged on the periphery of the rainwater outlet connecting pipe orifice (2-1); Each deodorizing module is connected to the rainwater pipe on the well wall via the rainwater outlet connecting pipe opening (2-1) of the backflow port cover (2); the connecting parts on the upper and lower sides of the backflow port cover (2) are connected to two fixing ring belts (3); the other ends of the fixing ring belts (3) are connected to fastening joints (4); the other ends of the fastening joints (4) are slidably arranged on the corresponding height adjustment rods (5); each deodorizing module is a first deodorizing module (1-1), a second deodorizing module (1-2), or a third deodorizing module (1-3); The first deodorizing module (1-1) comprises a deodorizing diversion pipe (1-4) connected to a rainwater pipe, a one-way pressure relief device (1-6) being provided on the deodorizing diversion pipe (1-4), a cover plate (1-5) being provided at the end of the deodorizing diversion pipe (1-4), the cover plate (1-5) being hinged to the upper part of the deodorizing diversion pipe (1-4) and inclined in the direction of water flow from the deodorizing diversion pipe (1-4), and the length of the cover plate (1-5) being greater than the outer diameter of the deodorizing diversion pipe (1-4); The second deodorizing module (1-2) comprises a deodorizing diversion pipe (1-4), a duckbill valve (1-8) is provided at the end of the deodorizing diversion pipe (1-4), and a one-way pressure relief device (1-6) is provided on the deodorizing diversion pipe (1-4), wherein the duckbill valve (1-8) is opened when rainwater is collected and is closed when there is no rainwater. The third odor-proof module (1-3) comprises an odor-proof diversion pipe (1-4), an odor-proof silica gel bag (1-10) is provided at the end of the odor-proof diversion pipe (1-4), and a one-way pressure relief device (1-6) is provided on the odor-proof diversion pipe (1-4), and the odor-proof silica gel bag (1-10) is opened when collecting rainwater and is closed when there is no rainwater; A connecting bayonet (2-3) is provided on the outer wall of the rainwater inlet connecting pipe opening (2-1), and two rows of first threaded holes (2-2) are provided on the connecting parts on the upper and lower sides of the rainwater inlet connecting pipe opening (2-1), and the two rows of first threaded holes (2-2) are symmetrically arranged with respect to the rainwater inlet connecting pipe opening (2-1); The deodorizing module is provided with a buckle, and the buckle on the deodorizing module is matched and connected with the connecting bayonet (2-3); The fixing ring band (3) is in an arc shape as a whole, and a plurality of second threaded holes (3-1) are provided on both sides of the fixing ring band (3); Part of the second threaded hole (3-1) on the fixed ring band (3) is fixed to the first threaded hole (2-2) of the backflow port cover (2) by bolt connection; The cross section of the fixed ring belt (3) is U-shaped; The fastening joint (4) is a ring belt with raised structures on both sides, wherein a left eccentric perforated threaded opening (4-1) is provided inside the raised structure on one side, and a right non-threaded notch (4-3) is provided at the same position inside the raised structure on the other side, and a third threaded hole (4-2) is provided on the ring belt of the fastening joint (4).

2. The deodorizing device for fixing a combined manhole rainwater outlet according to claim 1 is characterized in that: The protruding structure of the fastening joint (4) is located in the U-shaped groove of the fixing ring band (3), and the third threaded hole (4-2) on the fastening joint (4) and the remaining second threaded hole (3-1) on the fixing ring band (3) are connected and fixed by bolts.

3. The deodorizing device for fixing a combined manhole rainwater outlet according to claim 1 is characterized in that: The height adjustment rod (5) is an I-shaped steel and is provided with two long slots (5-2) and two eccentric perforated threaded holes (5-1); The eccentric perforated threaded hole (5-1) is used to fix the height adjustment rod; The long grooves (5-2) are used to respectively connect fastening joints (4) of different heights.

4. The deodorizing device for fixing a combined manhole rainwater outlet according to claim 1 is characterized in that: The backflow port cover (2), the fastening joint (4) and the height adjustment rod (5) are made of polyvinyl chloride.

5. A method for installing a combined sewer manhole rainwater outlet deodorization device according to any one of claims 1 to 4, characterized in that: A plurality of height adjustment rods (5) are fixed inside the combined manhole, wherein the height adjustment rods (5) are located on both sides of the deodorization module, and adjacent deodorization modules share one height adjustment rod (5); The rainwater pipe and the deodorization module are connected by using the backflow port cover (2), the connection point of the rainwater pipe is arranged inside the rainwater port connecting pipe opening (2-1) of the backflow port cover (2), and the guide pipe of the deodorization module is sleeved on the outer periphery of the rainwater port connecting pipe opening (2-1); Two fixing rings (3) are provided on the tile-shaped connecting portion on the upper side of the backflow port cover (2), and the threaded holes at the connection between the two are fixed by bolt connection; Two fixing rings (3) are provided on the tile-shaped connection portion on the lower side of the backflow port cover (2), and the threaded holes at the connection between the two are fixed by bolt connection; The other end of the fixed ring belt (3) is connected to the fastening joint (4), and the other end of the fastening joint (4) is arranged on the height adjustment rod (5).

6. The installation method for fixing the deodorizing device of the combined manhole rainwater outlet according to claim 5 is characterized in that: The height adjustment rod (5) is fixed in the following manner: the height adjustment rod (5) is fixed inside the combined flow well by using a bolt and an eccentric perforated threaded hole (5-1), and one end of the bolt is fixed to the well wall; The fastening joint (4) is installed in the following manner: the protruding structure of the connection end of the fastening joint (4) is arranged in the notch of the fixing ring band (3), and the fastening joint (4) is connected to the second threaded hole (3-1) on the fixing ring band (3) through the third threaded hole (4-2) by means of bolts.

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