TPU (thermoplastic polyurethane) sealed environment-friendly continuous composite static mixer

Abstract

The invention discloses a TPU sealed environment-friendly continuous composite static mixer, and relates to the technical field of static mixers.The TPU sealed environment-friendly continuous composite static mixer comprises a liquid inlet pipe, the liquid inlet pipe is used for collecting sewage and chemicals to enable the sewage and the chemicals to enter subsequent links together, branch pipes are welded to the outer wall of the liquid inlet pipe, and the branch pipes are welded to the outer wall of the liquid inlet pipe; and the interior of the branch pipe and the interior of the liquid inlet pipe are in a communicating state, and the bottom of the branch pipe extends to the axis of the liquid inlet pipe and is used for guiding a medicament into the liquid inlet pipe. On the basis of static mixing of a traditional single pipeline, the liquid medicine mixing process can be refined into three steps of premixing, shunting fine mixing and converging mixing, so that the liquid medicine is mixed more thoroughly, and meanwhile, through the structural design of the modules, a plurality of spiral pieces can be freely disassembled and assembled, so that the spiral pieces are convenient to clean.

Description

Technical Field

[0001] This invention relates to the field of static mixer technology, specifically a TPU sealed environmentally friendly continuous composite static mixer. Background Technology

[0002] Static mixers are core equipment in the environmental protection industry for achieving efficient mixing, reaction, and separation. They are widely used in key processes such as wastewater treatment, waste gas treatment, and solid waste resource utilization. Their core value lies in improving environmental treatment efficiency and reducing energy consumption through efficient mixing without moving parts. Wastewater treatment is the most common application scenario for static mixers in the environmental protection industry. For example, when adding coagulants such as PAC (polyaluminum chloride) and PAM (polyacrylamide) to wastewater, static mixers can quickly achieve micro-mixing of the agents and wastewater within the pipeline, avoiding local over- or under-addition of agents, forming denser flocs, and improving the solid-liquid separation efficiency of subsequent sedimentation tanks.

[0003] However, existing static mixers have the following shortcomings in wastewater treatment: 1. Existing mixers have only one pipe in the mixing stage. When wastewater and chemicals are mixed, if the water flow is too large, the wastewater and chemicals will stay in the pipe for too short a time, which can easily lead to insufficient mixing; 2. When treating wastewater containing a large amount of sludge and suspended solids (such as chemical wastewater and wastewater before municipal sludge conditioning), viscous materials are easily stuck to the spiral blades inside the static mixer. Long-term use can cause the spiral channel to become smaller or even blocked. In the existing technology, multiple spiral blades are usually directly welded to the inner wall of the pipe, which makes it difficult to clean the spiral blades located deep inside. Summary of the Invention

[0004] The purpose of this invention is to provide a TPU sealed environmentally friendly continuous composite static mixer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a TPU sealed environmentally friendly continuous composite static mixer, comprising: The inlet pipe is used for collecting sewage and chemicals, so that the sewage and chemicals can enter the subsequent process together. A branch pipe is welded on the outer wall of the inlet pipe. The inside of the branch pipe is in communication with the inside of the inlet pipe. The bottom of the branch pipe extends to the axis of the inlet pipe and is used to introduce the chemicals into the inlet pipe. The No. 1 main flow mixing component is fixedly installed at the end of the inlet pipe and is used to perform preliminary mixing of sewage and chemicals. The diversion component is fixedly installed at the end of the No. 1 main flow mixing component, and is used to divert the initially mixed sewage and reagent into multiple liquid streams; Several diversion and mixing components are fixedly installed at the end of the diversion component to further mix the multiple streams of sewage and the reagent after diversion; A collection device, located at the end of the diversion and mixing device, is used to re-collect the diverted mixture of sewage and chemicals into a single stream; The No. 2 main flow mixing component is fixedly installed at the end of the collection component and is used to mix the wastewater and the reagent mixture after collection.

[0006] As a further preferred embodiment of this technical solution, the No. 1 main flow mixing component and the No. 2 main flow mixing component have the same structural composition and the same dimensions of each structure, while the split flow mixing component and the No. 1 main flow mixing component have the same structural composition but different dimensions of each structure.

[0007] As a further preferred embodiment of this technical solution, a mounting base is welded to the upper side of the front end of the inlet pipe, and a threaded hole is provided at the axial center of the mounting base. A flow sensor is installed in the threaded hole, and the probe of the flow sensor is located inside the inlet pipe. An external thread is provided on the outer shell of the flow sensor, and the external thread is threadedly engaged with the threaded hole.

[0008] As a further preferred embodiment of this technical solution, the diverter includes a main flow pipe and several branch pipes. One end of the main flow pipe is fixedly disposed at the end of the first main flow mixing component. The several branch pipes are respectively welded to the other end of the main flow pipe. The several branch pipes are arranged in a ring array with the axis of the main flow pipe as the center. The interior of each of the several branch pipes is in communication with the interior of the main flow pipe. The structure of the collector is the same as that of the diverter, but the direction is opposite.

[0009] As a further preferred embodiment of this technical solution, the number of the diversion and mixing components is the same as the number of branch pipes, and several of the diversion and mixing components are respectively fixedly disposed at the ends of several branch pipes.

[0010] As a further preferred embodiment of this technical solution, the flow-diverting and mixing component includes a tube body, and a plurality of spiral blades are fixedly arranged inside the tube body, with adjacent spiral blades rotating in opposite directions and staggered end to end.

[0011] As a further preferred embodiment of this technical solution, the flow-diverting and mixing component further includes sleeves, the number of which is the same as the number of spiral blades. Several spiral blades are respectively welded to the inner walls of several sleeves. Four limiting strips are provided on the outer wall of the sleeves. The limiting strips are integrally formed with the sleeves. The four limiting strips are arranged in a ring array with the axis of the sleeve as the center. An installation groove is provided on the inner wall of the tube body. The inner diameter of the installation groove is equal to the outer diameter of the sleeve. The length of the installation groove is equal to the sum of the lengths of several sleeves. Four limiting grooves are provided on the inner wall of the installation groove. The four limiting grooves correspond one-to-one with the four limiting strips. The limiting grooves and limiting strips are slidably adapted to each other.

[0012] As a further preferred embodiment of this technical solution, a thickened tube is fixedly sleeved on the outer wall of one end of the tube body. A disassembly port is opened on the outer wall of the thickened tube. The disassembly port is in communication with the mounting groove. The length of the disassembly port is greater than the length of the sleeve, and the width of the disassembly port is equal to the diameter of the mounting groove. A sealing cap is provided on the disassembly port. The sealing cap is fixedly connected to the thickened tube by fixing screws. A sealing groove is opened at the edge of the opening of the disassembly port. A sealing strip is opened at the bottom of the sealing cap. The sealing strip and the sealing groove are mutually compatible.

[0013] As a further preferred embodiment of this technical solution, the bottom of the sealing cover is also provided with a slot, which is compatible with the limiting strip.

[0014] As a further preferred embodiment of this technical solution, notches are respectively opened on the upper sides of both ends of one of the sleeves, and two sealing blocks are fixedly installed on the bottom of the sealing cover, with the two sealing blocks and the two notches being adapted to each other.

[0015] This invention provides a TPU-sealed, environmentally friendly, continuous composite static mixer, which has the following beneficial effects: This invention, through the synergistic action of the inlet pipe, the first main flow mixing component, the diverter, the diverter mixing component, the collector, and the second main flow mixing component, refines the chemical mixing process into three steps: premixing, fine diverter mixing, and merging mixing, based on the traditional static mixing of a single pipe. This makes the chemical mixing more thorough. The spiral blades with opposite directions of rotation and staggered connections inside the mixing component form a continuous spiral channel with alternating directions, forcing the fluid to split and twist as it passes through. At the same time, the modular structural design allows several spiral blades to be freely disassembled and assembled, facilitating the cleaning of the spiral blades and avoiding the problem in traditional solutions where multiple spiral blades are directly welded to the inner wall of the pipe, making it difficult to clean the spiral blades located deep inside. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a breakdown diagram of the overall structure of the present invention; Figure 3 This is a sectional view of the liquid inlet pipe in this invention; Figure 4 This is a schematic diagram of the flow divider in this invention; Figure 5 This is a schematic diagram showing the splitting and mixing component in this invention; Figure 6 This is a schematic diagram showing the arrangement of multiple sleeves in this invention; Figure 7 This is a schematic diagram of the bottom of the sealing cap in this invention; Figure 8 This is a schematic diagram of the interior of the tube in this invention; Figure 9 This is a schematic diagram of the structure of a single sleeve in this invention; Figure 10 This is a schematic diagram of the arrangement of multiple spiral blades in this invention.

[0017] In the picture: 100. Inlet pipe; 101. Branch pipe; 102. Mounting base; 103. Flow sensor; 104. External thread; 105. Threaded hole; 200, No. 1 main flow mixing component; 300. Flow divider; 301. Main flow pipe; 302. Branch flow pipe; 400. Diverter / Mixer; 401. Pipe Body; 402. Thickened Pipe; 403. Disassembly / Assembly Port; 404. Sealing Groove; 405. Sealing Cap; 406. Sealing Strip; 407. Sealing Block; 408. Sleeve; 409. Notch; 410. Spiral Blade; 411. Limiting Strip; 412. Mounting Groove; 413. Limiting Groove; 414. Slot; 500. Current collector; 600, No. 2 main flow mixing component. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] This invention provides a technical solution: such as Figure 1 As shown in this embodiment, a TPU sealed environmentally friendly continuous composite static mixer includes an inlet pipe 100, a first main flow mixing component 200, a diverter 300, a diverter mixing component 400, a collector 500, and a second main flow mixing component 600.

[0020] like Figure 3As shown, the inlet pipe 100 is used for collecting sewage and chemicals, allowing them to enter subsequent stages together. A branch pipe 101 is welded to the outer wall of the inlet pipe 100, and the interior of the branch pipe 101 is in communication with the interior of the inlet pipe 100, used to guide the chemicals into the inlet pipe 100. The bottom of the branch pipe 101 extends to the axis of the inlet pipe 100, ensuring that the chemicals entering the inlet pipe 100 can diffuse from the axis of the inlet pipe 100. A mounting base 102 is welded to the upper front end of the inlet pipe 100. A threaded hole 105 is provided at the center of the shaft of component 2. A flow sensor 103 is installed inside the threaded hole 105. The probe of the flow sensor 103 is located inside the inlet pipe 100. An external thread 104 is provided on the outer shell of the flow sensor 103, which is threaded into the threaded hole 105. The flow sensor 103 can detect the flow rate of sewage entering the inlet pipe 100 in real time. The flow sensor 103 transmits the collected flow signal to the PLC control system. The control system automatically calculates the required instantaneous dosage of the agent based on the preset "sewage flow rate - agent dosage" ratio parameter and the real-time sewage flow rate. Then, it controls the metering pump to deliver the required amount of agent to the branch pipe 101, thereby ensuring the accurate ratio of agent to sewage. Taking the splitting of a single flow into multiple streams as an example, under the premise that the mixing element structure is the same, the flow rate in each branch pipe is an equal distribution of the single flow rate. Moreover, the fluid shear rate is related to the flow velocity, while the residence time is proportional to the channel length. This invention, through flow splitting, maintains a suitable flow velocity for efficient mixing in each branch while increasing the total effective mixing path length by several times through parallel connection. For example, in a four-way flow splitting configuration, the total pipe length required to achieve the same mixing uniformity can be shortened compared to a traditional single-pipe series structure, or the mixing efficiency can be improved with the same length.

[0021] like Figure 1 As shown, the No. 1 main flow mixing component 200 is fixedly installed at the end of the inlet pipe 100 and is used to perform preliminary mixing of sewage and chemicals.

[0022] like Figure 1 As shown, the diversion component 300 is fixedly installed at the end of the first main flow mixing component 200, and is used to divert the initially mixed sewage and reagents into multiple liquid streams, such as... Figure 4 As shown, it includes a main flow pipe 301 and several branch pipes 302. One end of the main flow pipe 301 is fixedly installed at the end of the first main flow mixing component 200. Several branch pipes 302 are respectively welded to the other end of the main flow pipe 301. The several branch pipes 302 are arranged in a ring array with the axis of the main flow pipe 301 as the center. The interior of the several branch pipes 302 is in communication with the interior of the main flow pipe 301.

[0023] like Figure 1As shown, several diversion mixing components 400 are fixedly installed at the end of the diversion component 300. The number of diversion mixing components 400 is the same as the number of branch pipes 302. They are used to further mix the mixture of multiple streams of sewage and chemicals after diversion, so that the mixing of sewage and chemicals is more thorough.

[0024] like Figure 1 As shown, the collector 500 is located at the end of the diversion mixing component 400, and is used to re-collect the diverted sewage and chemical mixture into a single stream. The structure of the collector 500 is the same as that of the diversion component 300, but in the opposite direction. The two ends of the diversion mixing component 400 are respectively fixed to the ends of the branch pipes 302 of the diversion component 300 and the collector 500. like Figure 1 As shown, the No. 2 main flow mixing component 600 is fixedly installed at the end of the collection component 500 to mix the sewage and the agent mixture after collection, ensuring that the mixtures of multiple sewage and agent mixtures can be mixed with each other.

[0025] like Figure 1 As shown, the No. 1 main flow mixing component 200 and the No. 2 main flow mixing component 600 have the same structural composition and the same dimensions of each structure, while the split flow mixing component 400 and the No. 1 main flow mixing component 200 have the same structural composition but different dimensions of each structure.

[0026] like Figure 5 As shown, the flow-diverting mixing component 400 includes a tube body 401, and a plurality of spiral blades 410 are fixedly disposed inside the tube body 401, such as... Figure 10 As shown, the two adjacent spiral blades 410 rotate in opposite directions and are staggered. This creates a continuous spiral channel with opposite directions between the two adjacent spiral blades 410. When the fluid passes through the two adjacent spiral blades 410, it is forced to split and twist, avoiding the fluid from "passing straight through" without mixing.

[0027] When treating wastewater containing a large amount of sludge and suspended solids (such as chemical wastewater and wastewater before municipal sludge conditioning), viscous materials tend to stick to the spiral blades 410. Long-term use can lead to a reduction in the size of the spiral channel or even blockage. In the prior art, multiple spiral blades 410 are usually directly welded to the inner wall of the pipe, which makes it difficult to clean the spiral blades 410 located deep inside. Therefore, the following design is proposed.

[0028] like Figure 6 As shown, the flow-diverting mixing component 400 also includes sleeves 408, the number of which is the same as the number of spiral blades 410. Several spiral blades 410 are respectively welded to the inner walls of several sleeves 408, as shown... Figure 8As shown, four limiting strips 411 are provided on the outer wall of the sleeve 408. The limiting strips 411 are integrally formed with the sleeve 408. The four limiting strips 411 are arranged in a ring array with the axis of the sleeve 408 as the center, as shown. Figure 7 An installation groove 412 is provided on the inner wall of the tube body 401. The inner diameter of the installation groove 412 is equal to the outer diameter of the sleeve 408, and the length of the installation groove 412 is equal to the sum of the lengths of several sleeves 408. This arrangement restricts the axial movement of the sleeves 408 after all sleeves 408 are installed in the installation groove 412. Four limiting grooves 413 are provided on the inner wall of the installation groove 412, each corresponding to a limiting strip 411. The limiting grooves 413 and limiting strips 411 slide together. After the sleeve 408 is installed in the installation groove 412, the four limiting strips 411 respectively engage with the four limiting grooves 413, thereby limiting the movement of the sleeve 408 and preventing rotation. Figure 5 As shown, a thickened tube 402 is fixedly sleeved on the outer wall of one end of the tube body 401. A disassembly / removal port 403 is provided on the outer wall of the thickened tube 402. The disassembly / removal port 403 is in communication with the mounting groove 412. The length of the disassembly / removal port 403 is greater than the length of the sleeve 408, and the width of the disassembly / removal port 403 is equal to the diameter of the mounting groove 412. This arrangement ensures that the sleeve 408 can be inserted into the mounting groove 412 from the disassembly / removal port 403. A sealing cap 405 is provided on the disassembly / removal port 403. The sealing cap 405 is fixedly connected to the thickened tube 402 by fixing screws. A sealing groove 404 is provided at the edge of the opening of the disassembly / removal port 403. Figure 7 As shown, a sealing strip 406 is provided at the bottom of the sealing cover 405. The sealing strip 406 and the sealing groove 404 are adapted to each other. The setting of the sealing strip 406 and the sealing groove 404 can prevent water from seeping out from the gap of the disassembly port 403. A slot 414 is also provided at the bottom of the sealing cover 405. The slot 414 and the limiting strip 411 are adapted to each other. The slot 414 is used to limit the sleeve 408 at the disassembly port 403. After the sealing cover 405 is installed, the limiting strip 411 on the upper side of the sleeve 408 at the disassembly port 403 will be inserted into the slot 414 at the bottom of the sealing cover 405.

[0029] During installation, align the limiting strip 411 on the outer wall of the sleeve 408 with the limiting groove 413 on the inner wall of the mounting groove 412. Then, insert the sleeve 408 section by section into the mounting groove 412 through the disassembly port 403, ensuring that the ends of adjacent spiral blades 410 are staggered. After all sleeves 408 are installed, since the length of the mounting groove 412 is equal to the sum of the lengths of several sleeves 408, the two ends of the mounting groove 412 can restrict the axial movement of the sleeves 408. At the same time, the cooperation between the limiting strip 411 and the limiting groove 413 can prevent the sleeves 408 from rotating. Finally, fix the sealing cap 405 to the disassembly port 403 with fixing screws to complete the installation of the sleeves 408 and spiral blades 410. This installation method allows the spiral blades 410 to be disassembled from the pipe section by section, and the cleaning of individual spiral blades 410 is more convenient, avoiding the inability to effectively clean the spiral blades 410 located on the inner side.

[0030] It should be noted that when the sleeve 408 is installed after cleaning, the high-pressure nozzle needs to be inserted into the disassembly port 403 to flush the inner walls of the installation groove 412 and the limiting groove 413 with high-pressure water spray, so as to prevent particulate impurities from falling into the pipe and affecting the installation accuracy of the sleeve 408.

[0031] When disassembling sleeve 408, because there is no gap between the outer wall of sleeve 408 and the inner wall of mounting groove 412, fingers lack a point of leverage, making disassembly difficult. To facilitate the disassembly of sleeve 408, the following design is implemented: Figure 6 As shown, a sleeve 408 has notches 409 on its upper sides at both ends. During installation, the sleeve 408 with notches 409 needs to be installed at the disassembly / removal port 403, with the notches 409 facing upwards. This arrangement allows for easy disassembly of the sleeve 408 by inserting a finger into the notches 409. Figure 7 As shown, two sealing blocks 407 are fixedly installed at the bottom of the sealing cover 405. The two sealing blocks 407 are adapted to the two notches 409. The notches 409 can be sealed by the sealing blocks 407.

[0032] The entire device, through precise flow sensing and automatic dosing linkage, as well as efficient mixing, avoids excessive chemical dosing at the source, reducing secondary pollution of water bodies by chemical residues. Furthermore, the modular and detachable design significantly extends the service life of the main body of the equipment, preventing resource waste due to partial blockages leading to overall failure. The synergy between the diversion and parallel mixing operation structure and the modular and detachable spiral structure allows for significantly improved mixing efficiency and stability under high flow conditions by increasing parallel mixing paths, while the detachable spiral structure enables convenient maintenance and cleaning of core mixing components, completely resolving persistent blockage problems.

[0033] The wiring diagrams of the flow sensor 103, PLC control system, and metering pump in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the flow sensor 103, PLC control system, and metering pump will not be explained in detail.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A TPU sealed environment-friendly continuous composite static mixer, characterized in that, The utility model relates to a sewage and medicament mixing device, which comprises the following parts: a liquid inlet pipe (100) for collecting sewage and medicament, the outer wall of the liquid inlet pipe (100) is welded with a branch pipe (101), the inside of the branch pipe (101) is in communication with the inside of the liquid inlet pipe (100), the bottom of the branch pipe (101) extends to the axis of the liquid inlet pipe (100) for guiding medicament into the liquid inlet pipe (100); a first total flow mixing element (200) fixedly arranged at the end of the liquid inlet pipe (100) for preliminarily mixing sewage and medicament; a flow dividing element (300) fixedly arranged at the end of the first total flow mixing element (200) for dividing the preliminarily mixed sewage and medicament into multiple streams; a plurality of flow dividing mixing elements (400) fixedly arranged at the end of the flow dividing element (300) for further mixing the multiple streams of sewage and medicament; a flow collecting element (500) arranged at the end of the flow dividing mixing element (400) for collecting the multiple streams of sewage and medicament into one stream; a second total flow mixing element (600) fixedly arranged at the end of the flow collecting element (500) for mixing the collected sewage and medicament.

2. The TPU sealed environment-friendly continuous composite static mixer according to claim 1, characterized in that: The first total flow mixing element (200) and the second total flow mixing element (600) have the same structure and the same size of each structure, and the flow dividing mixing element (400) and the first total flow mixing element (200) have the same structure and different size of each structure.

3. The TPU sealed environment-friendly continuous composite static mixer according to claim 1, characterized in that: The front end of the liquid inlet pipe (100) is welded with a mounting seat (102), a threaded hole (105) is formed at the axis of the mounting seat (102), a flow sensor (103) is arranged in the threaded hole (105), the probe of the flow sensor (103) is located in the inside of the liquid inlet pipe (100), an external thread (104) is formed on the shell of the flow sensor (103), and the external thread (104) is screwed with the threaded hole (105).

4. The TPU sealed environment-friendly continuous composite static mixer according to claim 1, characterized in that: The flow dividing element (300) comprises a total flow pipe (301) and a plurality of branch pipes (302), one end of the total flow pipe (301) is fixedly arranged at the end of the first total flow mixing element (200), the plurality of branch pipes (302) are respectively welded at the other end of the total flow pipe (301), the plurality of branch pipes (302) are arranged in a ring array with the axis of the total flow pipe (301) as the center, the inside of the plurality of branch pipes (302) is in communication with the inside of the total flow pipe (301), and the flow collecting element (500) has the same structure as the flow dividing element (300) but in the opposite direction.

5. The TPU sealed environment-friendly continuous composite static mixer according to claim 4, characterized in that: The number of the flow dividing mixing elements (400) is the same as that of the branch pipes (302), and the two ends of the plurality of flow dividing mixing elements (400) are respectively fixedly arranged at the ends of the branch pipes (302) of the flow dividing element (300) and the flow collecting element (500).

6. The TPU sealed environment-friendly continuous composite static mixer according to claim 1, characterized in that: The shunt mixing piece (400) comprises a pipe body (401), and a plurality of helical pieces (410) are fixedly arranged in the pipe body (401); adjacent two of the helical pieces (410) are staggered and connected in opposite directions.

7. The TPU sealed environment-friendly continuous composite static mixer according to claim 6, characterized in that: The shunt mixing piece (400) further comprises a sleeve (408), the number of the sleeve (408) is the same as that of the helical pieces (410), the plurality of helical pieces (410) are respectively welded on inner walls of the plurality of sleeves (408), four limiting strips (411) are arranged on an outer wall of the sleeve (408), the limiting strips (411) are integrally formed with the sleeve (408), the four limiting strips (411) are arranged in a ring array with the axis of the sleeve (408) as the center, an installation groove (412) is arranged on an inner wall of the pipe body (401), the inner diameter of the installation groove (412) is equal to the outer diameter of the sleeve (408), the length of the installation groove (412) is equal to the sum of the lengths of the plurality of sleeves (408), four limiting grooves (413) are arranged on the inner wall of the installation groove (412), the four limiting grooves (413) correspond to the four limiting strips (411) in one-to-one correspondence, and the limiting grooves (413) and the limiting strips (411) are in sliding fit.

8. The TPU sealed environment-friendly continuous composite static mixer according to claim 7, characterized in that: A thickened pipe (402) is fixedly arranged on an outer wall of one end of the pipe body (401), a dismounting opening (403) is arranged on an outer wall of the thickened pipe (402), the dismounting opening (403) is in communication with the installation groove (412), the length of the dismounting opening (403) is greater than that of the sleeve (408), the width of the dismounting opening (403) is equal to the diameter of the installation groove (412), a sealing cover (405) is arranged on the dismounting opening (403), the sealing cover (405) is fixedly connected with the thickened pipe (402) through fixing screws, a sealing groove (404) is arranged at the opening edge position of the dismounting opening (403), a sealing strip (406) is arranged on the bottom of the sealing cover (405), and the sealing strip (406) and the sealing groove (404) are matched with each other.

9. The TPU sealed environment-friendly continuous composite static mixer according to claim 8, characterized in that: A clamping groove (414) is further arranged on the bottom of the sealing cover (405), and the clamping groove (414) and the limiting strip (411) are matched with each other.

10. The TPU sealed environment-friendly continuous composite static mixer according to claim 8, characterized in that: Two sealing blocks (407) are fixedly arranged on the bottom of the sealing cover (405), and the two sealing blocks (407) and the two notches (409) are matched with each other.

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