Environment-friendly pipeline for pharmaceutical industry
By designing splicing and filtration mechanisms, the problems of low pipeline connection efficiency and leakage in the pharmaceutical industry are solved, achieving fast and stable connection and efficient filtration, meeting environmental protection requirements, and applied to environmentally friendly pipelines in the pharmaceutical industry.
Patent Information
- Application Number
- CN202520825677.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing pipe connection methods in the pharmaceutical industry are inefficient, welding is time-consuming and prone to leakage, and hot-melt connection has high operational requirements, resulting in loose connections.
The system employs a splicing mechanism, including connecting plates, limiting components, and sealing rings, to achieve quick and stable pipe connections through the cooperation of limiting rods and clamping rods; it incorporates a filtration mechanism, including metal filter screens, coarse filter screens, and fine filter screens, for multi-stage filtration; and it uses steel-plastic composite pipes with added flame retardants to improve fire resistance.
It improves the efficiency and sealing of pipeline connections, ensures the stability and leak prevention of connections, achieves high-efficiency filtration and environmental protection performance, reduces resource waste, and meets the requirements of sustainable development.
Smart Images
Figure CN223895368U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steel plastic composite pipe technical field especially relates to an environmental protection pipeline for medical industry. BACKGROUND
[0002] In the pharmaceutical industry, the environmental protection pipeline can ensure the purity and non-pollution of drug production and transportation, avoid the influence of harmful substances released by pipeline materials on drug efficacy and drug quality, and ensure drug safety. It can also efficiently treat medical wastewater and waste gas, prevent harmful substances from leaking into the environment, and reduce pollution risk. Thirdly, it is in line with the concept of sustainable development, reduces resource waste, helps green transformation of pharmaceutical enterprises, and promotes the entire industry to move towards a new stage of environmental protection and high-quality development.
[0003] The environmental protection pipeline for medical industry is usually spliced by hot melting connection and electric melting connection. Hot melting connection uses a heating tool to heat the two ends of the pipeline to a molten state, then applies pressure to connect them together, and forms a firm joint after cooling. Electric melting connection passes electricity through the electric melting pipe fitting at the pipeline interface to heat the pipe fitting and connect the pipeline. Both methods can ensure the sealing and stability of the connection, reduce the risk of leakage, and meet the high requirements of the pharmaceutical industry for pipeline connection.
[0004] In the prior art, some pipelines for medical industry are connected by welding during use. The welding method requires more time for heating, cooling and other operations, and the splicing efficiency is low. Hot melting connection has high operation requirements, and improper control of temperature, pressure and time parameters can easily lead to connection quality and leakage. Therefore, an environmental protection pipeline for medical industry is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] To make up for the above shortcomings, the utility model provides an environmental protection pipeline for medical industry, aiming at improving the low splicing efficiency of the welding method in the prior art and the problem of easy leakage due to loose connection of hot melting connection.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme:
[0007] An environmental protection pipeline for medical industry, comprising a medical pipeline, a flange one is fixedly connected to the outer wall of the medical pipeline, a splicing mechanism is installed on the inner wall of the flange one, a filtering mechanism is arranged on the medical pipeline, a flange two is detachably connected to the outer wall of the flange one, a sealing ring is slidably connected to the inner wall of the flange one, the splicing mechanism comprises a connecting plate, a limiting component is installed on the inner wall of the connecting plate, the side wall of the connecting plate is detachably connected to the outer wall of the flange one, a control plate is rotatably connected to the outer wall of the connecting plate, a limiting rod is fixedly connected to the bottom of the control plate, the outer wall of the limiting rod is slidably connected to the inner wall of the flange one, and a button is fixedly connected to the inner wall of the control plate.
[0008] Through the above technical scheme: when splicing, the connecting plate side wall is fixed on the outer wall of the flange one, the limiting column at one end of the connecting plate is clamped in the inner wall of the flange two for preliminary positioning, the button is pulled to drive the control plate to rotate, the control plate drives the limiting rod to rotate, the limiting rod is clamped into the inner wall of the flange two to realize pipeline splicing, and the sealing ring slides on the inner wall of the flange one, which can fill the gap at the connecting position of the flange one and the flange two, prevent medical fluid leakage, and ensure the sealing performance of pipeline connection.
[0009] As a further description of the above technical scheme:
[0010] The filtering mechanism includes a fine filter screen, the inner wall of the medical pipeline is fixedly connected with a metal filter screen, the inner wall of the medical pipeline is fixedly connected with a coarse filter screen, the inner wall of the medical pipeline is fixedly connected with a fine filter screen, and the bottom of the fine filter screen is provided with a blowdown pipe.
[0011] Through the above technical scheme: in the daily drainage process in the pharmaceutical industry, the metal filter screen first intercepts large waste, avoids direct impact on the coarse filter screen and the fine filter screen, plays a protection role and completes preliminary filtration, the coarse filter screen further filters larger impurities that are not intercepted by the metal filter screen, and the fine filter screen finely filters small debris, so that different sizes of impurities in the drainage can be effectively separated through three-stage filtration, the cleanliness of the drainage is ensured, and the impurities are prevented from blocking the pipeline or entering the subsequent processing link.
[0012] As a further description of the above technical scheme:
[0013] The top of the blowdown pipe is fixedly connected to the bottom of the medical pipeline, and the bottom of the blowdown pipe is threadedly connected with a cover.
[0014] Through the above technical scheme: when the impurities accumulated in the filtering mechanism are too much to affect the filtering effect, the cover at the bottom of the blowdown pipe is unscrewed, the impurities can be discharged from the inner wall of the blowdown pipe under the action of gravity, the cover is screwed again after cleaning is completed, the sealing of the blowdown pipe is realized, and the normal operation of the pipeline system is ensured, the design is convenient for periodic cleaning of the filtered impurities, and the efficient work of the filtering mechanism is maintained.
[0015] As a further description of the above technical scheme:
[0016] The limiting assembly includes a clamping rod, the top of the clamping rod is fixedly connected with a return spring, the top of the connecting plate is fixedly connected with a fixed plate, the inner wall of the fixed plate is rotatably connected with a rotating rod, the outer wall of the rotating rod is fixedly connected with a control plate, the other end of the return spring is fixedly connected to the inner wall of the flange one, the inner wall of the limiting rod is detachably connected with the clamping rod, and the outer wall of the control rod is fixedly connected with a sliding plate.
[0017] The above technical solution allows for the following: During pipe splicing, pressing the button rotates the control panel, which in turn rotates the control rod, causing the limit rod to engage with the inner wall of flange two. At this time, the limit rod slides on the outer wall of the slide groove until it engages with the hole in the inner wall of the limit rod, locking the limit rod and preventing it from loosening. During disassembly, sliding the control rod causes the sliding plate to slide in the slide groove, and the limit rod moves away from the inside of the limit rod under the elastic force of the return spring, releasing the lock on the limit rod. This makes it easy to press the button to rotate the limit rod and disengage it from the inner wall of flange two, thus achieving pipe disassembly. The entire process is convenient and the connection is stable.
[0018] As a further description of the above technical solution:
[0019] A control rod is fixedly connected to the outer wall of the lever, and a sliding plate is fixedly connected to the outer wall of the control rod;
[0020] Through the above technical solution, the sliding control rod can drive the sliding plate fixedly connected to it to slide in the sliding groove, thereby realizing the movement of the clamp rod. The setting of the control rod and the sliding plate provides a force point for operating the clamp rod, making it convenient for the staff to control the sliding of the clamp rod, thereby realizing the locking and unlocking of the limit rod, making the pipe splicing and disassembly operations easier to achieve.
[0021] As a further description of the above technical solution:
[0022] The inner wall of the flange is provided with a sliding groove, and the outer wall of the sliding plate is slidably connected to the inner wall of the sliding groove.
[0023] The above technical solution provides a sliding track for the sliding plate, ensuring the stability of the sliding plate during the sliding process. This allows the locking rod to slide accurately between the hole and the sliding track on the inner wall of the limiting rod, thereby locking and unlocking the limiting rod, ensuring the stable operation of the splicing mechanism, and preventing the locking rod from deviating during sliding, which would affect the pipe connection effect.
[0024] As a further description of the above technical solution:
[0025] The outer wall of the connecting plate is fixedly connected to a limiting post, the outer wall of the limiting post is detachably connected to the inner wall of the flange two, and the outer wall of the limiting rod is provided with a sliding groove.
[0026] The above technical solution involves inserting a limiting rod into the inner wall of flange two during pipe splicing to provide initial positioning, ensuring accurate alignment of flange one and flange two. This facilitates the subsequent insertion of the limiting rod into the inner wall of flange two. The groove on the outer wall of the limiting rod provides a sliding path for the rod. During pipe splicing, the rod slides along the outer wall of the groove until it engages with the hole in the inner wall of the limiting rod, thus fixing the limiting rod and ensuring the robustness of the pipe connection.
[0027] As a further description of the above technical solution:
[0028] The top of the drain pipe is installed at the bottom of the metal filter screen, and the clamp is detachably connected to the inner wall of the limiting rod.
[0029] The above technical solution involves installing the top of the drain pipe at the bottom of the metal filter screen, allowing large waste materials filtered by the metal filter screen to be discharged directly through the drain pipe, thus preventing waste materials from accumulating in the pipe and affecting filtration and drainage. The locking rod is used to engage with the hole in the inner wall of the limiting rod to lock the limiting rod and prevent it from loosening.
[0030] This utility model has the following beneficial effects:
[0031] 1. In this utility model, the limiting post at one end of the connecting plate is clamped onto the inner wall of flange two, and the other end is installed on the outer wall of flange one. At this time, the button is turned, causing the button to rotate. The rotation of the button drives the control plate to rotate. At this time, the control plate, together with the limiting rod, is clamped onto the inner wall of flange two. The clamping rod slides on the outer wall of the slide groove until it slides into the hole in the inner wall of the limiting rod, so as to complete the splicing and installation of the two pipes, making the splicing efficiency faster, and the connection of the flange with sealing ring is less prone to leakage.
[0032] 2. In this utility model, the metal filter screen protects the internal coarse and fine filter screens from damage caused by prolonged impact. It also performs initial filtration of large debris. The coarse filter screen further filters out larger debris not filtered by the metal filter screen, while the fine filter screen performs fine filtration of smaller impurities. When there is too much debris inside, the cover is opened, allowing the debris to flow down the inner wall of the drain pipe. The medical tubing uses a steel-plastic composite pipe, and adding suitable flame retardants to the plastic raw materials improves the flame retardant performance. Phosphorus-based flame retardants are used, which decompose upon heating to produce phosphoric acid, metaphosphoric acid, etc. These substances can form a dense carbonized film on the plastic surface, isolating oxygen and heat and preventing the spread of combustion. Antistatic coatings such as carbon black and metal oxides are used to coat the surface of the steel-plastic composite pipe. Carbon black and metal oxides can form a conductive network on the pipe surface, dissipating static electricity. Attached Figure Description
[0033] Figure 1 This is a three-dimensional schematic diagram of an environmentally friendly pipeline for the pharmaceutical industry proposed in this utility model;
[0034] Figure 2 This is a schematic diagram of the structure of a flange for an environmentally friendly pipeline used in the pharmaceutical industry, as proposed in this utility model.
[0035] Figure 3 This is a schematic diagram of the structure of flange 2 of an environmentally friendly pipeline for the pharmaceutical industry proposed in this utility model;
[0036] Figure 4This is a schematic diagram of the structure of a limiting column for an environmentally friendly pipeline used in the pharmaceutical industry, as proposed in this utility model.
[0037] Figure 5 for Figure 3 Enlarged view of point A in the middle;
[0038] Figure 6 for Figure 4 Enlarged view of point B in the middle.
[0039] Legend:
[0040] 1. Medical tubing; 2. Splicing mechanism; 21. Connecting plate; 22. Limiting post; 23. Button; 24. Return spring; 25. Sliding groove; 26. Sliding plate; 27. Control rod; 28. Limiting rod; 29. Control panel; 210. Limiting assembly; 211. Locking rod; 212. Sliding groove; 213. Rotating rod; 214. Fixing plate; 3. Filtration mechanism; 31. Fine filter screen; 32. Metal filter screen; 33. Coarse filter screen; 34. Drain pipe; 35. Cover; 4. Flange 1; 5. Flange 2; 6. Sealing ring. Detailed Implementation
[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0042] Reference Figure 1 , Figure 3 and Figure 5 This utility model provides an embodiment of an environmentally friendly pipeline for the pharmaceutical industry, comprising a medical pipeline 1, which provides external protection and support for the entire pipeline. A flange 4 is fixedly connected to the outer wall of the medical pipeline 1, used to connect the medical pipeline 1 to other components and to splice the pipeline. A splicing mechanism 2 is installed on the inner wall of the flange 4, enabling stable splicing and disassembly of the medical pipelines 1. A filter mechanism 3 is provided in the medical pipeline 1, which can filter waste and debris in the daily drainage of the pharmaceutical industry. A flange 5 is detachably connected to the outer wall of the flange 4, which cooperates with the flange 4 to achieve connection and fixation during pipeline splicing. A sealing ring 6 is slidably connected to the inner wall of the flange 4, enhancing the sealing performance when the flange 4 and flange 5 are connected, preventing liquid leakage.
[0043] Specifically, medical tubing 1 provides external protection and support. Its outer wall is fixed with flange 4 for connecting components and tubing splices, while splicing mechanism 2 is installed on the inner wall for stable splicing and disassembly. Medical tubing 1 is equipped with a filter mechanism 3, which filters wastewater and debris. Flange 2 5 is detachably connected to the outer wall of flange 4, and the two are fixed together. A sliding sealing ring 6 is connected to the inner wall of flange 4 to enhance the connection seal and prevent liquid leakage.
[0044] The splicing mechanism 2 includes a connecting plate 21, which is used to connect and fix other components. The side wall of the connecting plate 21 is detachably connected to the outer wall of flange 4, which facilitates the installation and disassembly of the connecting plate 21. A fixing plate 214 is fixedly connected to the top of the connecting plate 21, which provides support for the installation and rotation of components such as the rotating rod 213. The inner wall of the fixing plate 214 is rotatably connected to the rotating rod 213, which can rotate within the fixing plate 214 to drive the control plate 29 and other components to move. The outer wall of the rotating rod 213 is fixedly connected to the control plate 29, which can rotate with the rotation of the rotating rod 213, thereby controlling the movement of components such as the limiting rod 28. The bottom of the control plate 29 is fixedly connected to the limiting rod 28, which is used to lock the inner wall of flange 5 to fix the medical pipe 1 after splicing. The outer wall of the limiting rod 28 is slidably connected to the inner wall of flange 4, so that the limiting rod 28 can slide flexibly within flange 4.
[0045] Specifically, the splicing mechanism 2 uses the connecting plate 21 as the basic component. Its side wall is detachably connected to the outer wall of flange 4 for easy installation and disassembly. It is used to connect and fix other components. The fixing plate 214 fixed at the top of the connecting plate 21 provides installation and rotation support for the rotating rod 213, etc. The rotating rod 213 can rotate within the fixing plate 214. The control plate 29 fixed on its outer wall will move in tandem, which can drive the control limit rod 28 and other components. The limit rod 28 fixed at the bottom of the control plate 29 can lock the inner wall of flange 5 to achieve stable fixation of the medical pipe 1 after splicing. The outer wall of the limit rod 28 is slidably connected to the inner wall of flange 4 to ensure that it slides flexibly within flange 4 and ensures the smoothness of the splicing operation.
[0046] The limiting assembly 210 includes a locking rod 211, which is detachably connected to the inner wall of the limiting rod 28. The locking rod 211 can engage with a hole in the inner wall of the limiting rod 28 to fix the limiting rod 28. A button 23 is fixedly connected to the inner wall of the control plate 29 for manual operation of the rotation of the control plate 29. A return spring 24 is fixedly connected to the top of the locking rod 211, providing a return force for the locking rod 211. The other end of the return spring 24 is fixedly connected to the inner wall of the flange 4, enabling the return spring 24 to perform a return function. A control rod 27 is fixedly connected to the outer wall of the locking rod 211 for controlling the sliding of the locking rod 211. A sliding plate is fixedly connected to the outer wall of the control rod 27. 26. The sliding plate 26 moves with the movement of the control rod 27. The inner wall of flange 1 4 is provided with a sliding groove 25, which provides a sliding track for the sliding plate 26. The outer wall of the sliding plate 26 is slidably connected to the inner wall of the sliding groove 25, so that the sliding plate 26 can slide stably in the sliding groove 25. The outer wall of the connecting plate 21 is fixedly connected with a limit post 22. The limit post 22 is used to cooperate with flange 2 5 to achieve initial positioning during splicing. The outer wall of the limit post 22 is detachably connected to the inner wall of flange 2 5, which facilitates the connection and disassembly of the limit post 22 and flange 2 5. The outer wall of the limit rod 28 is provided with a sliding groove 212, which provides a path for the sliding of the locking rod 211, so that it can slide into the hole in the inner wall of the limit rod 28.
[0047] Specifically, the locking rod 211 cooperates with the inner wall hole of the limiting rod 28 to fix the limiting rod 28. The top of the limiting rod 211 is connected to the return spring 24, and the other end of the spring is fixed to the inner wall of the flange 4 to provide the locking rod 211 with the return spring force. The control rod 27 is used to control the sliding of the locking rod 211. The sliding plate 26 connected to its outer wall can slide stably in the sliding groove 25 of the inner wall of the flange 4. The button 23 on the inner wall of the control plate 29 makes it easy to manually operate its rotation. In addition, the limiting post 22 on the outer wall of the connecting plate 21 can cooperate with the flange 5 to achieve the initial positioning of the splicing. It is also detachable, which is convenient for connection and disassembly. At the same time, the sliding groove 212 opened on the outer wall of the limiting rod 28 provides a path for the locking rod 211 to slide to the inner wall hole of the limiting rod 28. All the components cooperate with each other to ensure the stability and convenient operation of the limiting after the medical tube 1 is spliced.
[0048] Reference Figure 2 , Figure 4 and Figure 6 The filtration mechanism 3 includes a fine filter screen 31, which is used to finely filter small impurities. A metal filter screen 32 is fixedly connected to the inner wall of the medical pipe 1. The metal filter screen 32 can perform preliminary filtration of large waste and debris in the drainage and protect the coarse filter screen 33 and the fine filter screen 31. A coarse filter screen 33 is fixedly connected to the inner wall of the medical pipe 1. The coarse filter screen 33 can further filter large objects that have not been filtered by the metal filter screen 32.
[0049] Specifically, the filtration mechanism 3 includes a fine filter screen 31, which can finely filter small impurities; the sewage discharge component below it is used to discharge filtered debris; the inner wall of the medical pipe 1 is also fixed with a metal filter screen 32 and a coarse filter screen 33, which are used for preliminary filtration of large waste materials and further filtration of unfinished large objects, respectively.
[0050] The drain pipe 34 is used to discharge debris from the medical tubing 1. The top of the drain pipe 34 is fixedly connected to the bottom of the medical tubing 1, allowing the drain pipe 34 to communicate with the medical tubing 1. The bottom of the drain pipe 34 is threadedly connected to a cap 35, which can close the drain pipe 34 and open it when sewage needs to be discharged. The medical tubing 1 is made of steel-plastic composite pipe, and adding a suitable flame retardant to the plastic raw material improves the flame retardant performance of the steel-plastic composite pipe. Phosphorus-based flame retardants are used, which decompose upon heating to generate phosphoric acid, metaphosphoric acid, etc. These substances can form a dense carbonized film on the plastic surface, isolating oxygen and heat and preventing the spread of combustion. The surface of the steel-plastic composite pipe is coated with antistatic coatings such as carbon black and metal oxides. Carbon black and metal oxides can form a conductive network on the pipe surface, dissipating static electricity.
[0051] Specifically, the drain pipe 34 is connected to the bottom of the medical conduit 1 to discharge internal debris. A threaded cap 35 is connected to the bottom and opened during drainage. The medical conduit 1 is a steel-plastic composite pipe. Phosphorus-based flame retardants are added to the plastic raw material; the thermal decomposition products form a carbonized film, isolating oxygen and heat and improving flame retardant performance. Simultaneously, an antistatic coating of carbon black and metal oxides is applied to its surface, forming a conductive network to dissipate static electricity.
[0052] Working principle: When two medical tubes 1 need to be spliced together, flange 1 4 and flange 2 5 are fixed to one side of the two medical tubes 1 respectively. At this time, the limiting post 22 at one end of the connecting plate 21 is locked into the inner wall of flange 2 5, and the other end is installed on the outer wall of flange 1 4. Then, the button 23 is turned, causing the button 23 to rotate. The rotation of the button 23 drives the control plate 29 to rotate. At this time, the control plate 29, together with the limiting rod 28, is locked into the inner wall of flange 2 5. The locking rod 211 slides on the outer wall of the slide groove 212 until it slides into the hole in the inner wall of the limiting rod 28. When disassembly is required, the control rod 27 is slid. The sliding of the control rod 27 causes the sliding plate 26 to slide in the slide groove 25, so that the locking rod 211 leaves the inside of the limiting rod 28 under the action of the return spring 24 and is no longer locked into the limiting rod 28. Then, the button 23 is turned, causing the control plate 29 to rotate and the limiting rod 28 to no longer lock into the inner wall of flange 2 5, thus completing the disassembly.
[0053] In the daily drainage of the pharmaceutical industry, there are inevitably some large waste materials and small debris. At this time, the metal filter screen 32 protects the internal coarse filter screen 33 and fine filter screen 31 from damage caused by long-term impact. It can also perform the first step of filtration for large debris. The coarse filter screen 33 can further filter the large objects that the metal filter screen 32 has not filtered. The fine filter screen 31 is used to perform fine filtration for small impurities. When there is too much debris inside, the cover 35 is opened to allow the debris to flow down the inner wall of the drain pipe 34. The medical pipe 1 adopts steel-plastic composite pipe, and adding a suitable flame retardant to the plastic raw material improves the flame retardant performance of the steel-plastic composite pipe. Phosphorus-based flame retardants are used, which decompose when heated to generate phosphoric acid, metaphosphoric acid, etc. These substances can form a dense carbonized film on the plastic surface, which isolates oxygen and heat and prevents the spread of combustion. Carbon black, metal oxide and other antistatic coatings are used to coat the surface of the steel-plastic composite pipe. Carbon black and metal oxides can form a conductive network on the surface of pipes, thus dissipating static electricity.
[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An environmentally friendly pipe for the pharmaceutical industry, comprising a medical pipe (1), characterized in that: The outer wall of the medical pipe (1) is fixedly connected to a flange one (4), the inner wall of the flange one (4) is equipped with a splicing mechanism (2), the medical pipe (1) is provided with a filter mechanism (3), the outer wall of the flange one (4) is detachably connected to a flange two (5), and the inner wall of the flange one (4) is slidably connected to a sealing ring (6). The splicing mechanism (2) includes a connecting plate (21), the inner wall of which is fitted with a limit assembly (210), the side wall of which is detachably connected to the outer wall of the flange (4), the outer wall of which is rotatably connected to a control plate (29), the bottom of which is fixedly connected to a limit rod (28), the outer wall of which is slidably connected to the inner wall of the flange (4), and the inner wall of which is fixedly connected to a button (23).
2. The environmentally friendly pipeline for the pharmaceutical industry according to claim 1, characterized in that: The filtration mechanism (3) includes a fine filter screen (31), a metal filter screen (32) is fixedly connected to the inner wall of the medical pipe (1), a coarse filter screen (33) is fixedly connected to the inner wall of the medical pipe (1), a fine filter screen (31) is fixedly connected to the inner wall of the medical pipe (1), and a drain pipe (34) is installed at the bottom of the fine filter screen (31).
3. The environmentally friendly pipeline for the pharmaceutical industry according to claim 2, characterized in that: The top of the drain pipe (34) is fixedly connected to the bottom of the medical pipe (1), and the bottom of the drain pipe (34) is threadedly connected to a cap (35).
4. The environmentally friendly pipeline for the pharmaceutical industry according to claim 2, characterized in that: The limiting assembly includes a locking rod (211), a return spring (24) is fixedly connected to the top of the locking rod (211), a fixing plate (214) is fixedly connected to the top of the connecting plate (21), a rotating rod (213) is rotatably connected to the inner wall of the fixing plate (214), a control plate (29) is fixedly connected to the outer wall of the rotating rod (213), and the other end of the return spring (24) is fixedly connected to the inner wall of the flange (4).
5. The environmentally friendly pipeline for the pharmaceutical industry according to claim 4, characterized in that: A control rod (27) is fixedly connected to the outer wall of the lever (211), and a sliding plate (26) is fixedly connected to the outer wall of the control rod (27).
6. The environmentally friendly pipeline for the pharmaceutical industry according to claim 5, characterized in that: The inner wall of the flange (4) is provided with a sliding groove (25), and the outer wall of the sliding plate (26) is slidably connected to the inner wall of the sliding groove (25).
7. The environmentally friendly pipeline for the pharmaceutical industry according to claim 4, characterized in that: The outer wall of the connecting plate (21) is fixedly connected to the limiting post (22), the outer wall of the limiting post (22) is detachably connected to the inner wall of the flange (5), and the outer wall of the limiting rod (28) is provided with a sliding groove (212).
8. An environmentally friendly pipeline for the pharmaceutical industry according to claim 4, characterized in that: The top of the drain pipe (34) is installed at the bottom of the metal filter screen (32), and the clamp (211) is detachably connected to the inner wall of the limiting rod (28).