Anti-backflow static mixer
By designing a synchronous retraction sealing structure for the internal mixing module and the lower sealing cover in a static mixer, the problems of uneven mixing and equipment damage caused by fluid backflow are solved, achieving premixing and uniform mixing of the fluid, and improving the stability and efficiency of the mixer.
Patent Information
- Application Number
- CN202520496261.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Static mixers are prone to backflow of fluid when the pipeline is closed, leading to problems such as uneven mixing, material contamination, and equipment damage.
A backflow-preventing static mixer was designed. The inner mixing module and the lower sealing cover move backward synchronously under the action of backflowing fluid to form a sealing structure, preventing further diffusion of the backflowing fluid. The premixing and uniform mixing of the fluid are achieved through the synergistic effect of the upper conical guide ring and the inner mixing module.
It effectively prevents backflow, improves the stability and reliability of the mixer in complex fluid environments, ensures uniform mixing, reduces the risk of equipment damage, and improves mixing efficiency.
Smart Images
Figure CN223901604U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to static mixer technical field especially relates to a kind of anti-backflow static mixers. BACKGROUND
[0002] Static mixer is the equipment that is driven without external power, relies on internal fixed structure to guide fluid flow and realizes mixing, and the core principle of static mixer is to change the flow rate, direction and distribution of fluid, so that different components realize efficient mixing in pipeline.
[0003] Fluid flows into static mixer and is guided to flow by internal mixing module for mixing operation, and during the use of static mixer, due to the change of internal pressure of pipeline when pipeline is closed and stopped, backflow of fluid along pipeline and static mixer can occur, and backflow can cause problems such as uneven mixing, material pollution and equipment damage. SUMMARY
[0004] The disclosed embodiment relates to an anti-backflow static mixer, the inner mixing module and the lower sealing cover retreat synchronously under the action of backflow fluid, the lower sealing cover quickly forms a sealing structure with the inner limiting ring, effectively prevents further diffusion of backflow fluid, avoids problems such as uneven mixing, material pollution and equipment damage caused by backflow, and greatly improves the operation stability and reliability of static mixer in complex fluid environment.
[0005] In the first aspect of the present disclosure, an anti-backflow static mixer is provided, which specifically includes a main mixing pipe, a double-pipe feeding pipe and an inner mixing module, the first end of the main mixing pipe is fixedly connected to the double-pipe feeding pipe through a flange plate, the inner mixing module is arranged in the main mixing pipe, the inner limiting ring is fixedly arranged on the inner side of the main mixing pipe, and the side of the inner limiting ring facing the inner mixing module is provided with a tapered inclined surface structure converging towards the center.
[0006] In at least some embodiments, the inner mixing module is arranged between the inner limiting rings, and the inner mixing module axially slides on the inner side of the main mixing pipe.
[0007] In at least some embodiments, the middle part of the double-pipe feeding pipe is provided with a side feeding pipe, the lower part of the double-pipe feeding pipe is fixedly provided with a lower tapered guide ring on the inner side, the upper part of the lower tapered guide ring is provided with a middle discharging pipe, the upper part of the double-pipe feeding pipe is fixedly provided with an upper tapered guide ring on the inner side, the upper tapered guide ring and the lower tapered guide ring are gradually reduced from bottom to top, and the taper design of the upper tapered guide ring and the lower tapered guide ring accelerates the flow rate of main fluid.
[0008] In at least some embodiments, the outer wall of the middle discharge pipe and the inner wall of the double pipe feeding pipe are spaced apart, the upper conical guide ring is arranged outside the upper part of the middle discharge pipe, and the fluid is uniformly dispersed in a ring shape to the outside of the middle discharge pipe.
[0009] In at least some embodiments, the side feeding pipe communicates the space between the middle discharge pipe and the double pipe feeding pipe, the side feeding pipe is below the upper conical guide ring, the side feeding pipe is above the lower conical guide ring, another fluid enters the space between the middle discharge pipe and the double pipe feeding pipe through the side feeding pipe, and the middle discharge pipe and the upper conical guide ring guide the fluid to flow upwards.
[0010] In at least some embodiments, the inner side of the upper conical guide ring and the outer side of the middle discharge pipe are spaced apart, the closer the outer side of the upper conical guide ring to the side feeding pipe, the smaller the spacing between the inner side of the upper conical guide ring and the middle discharge pipe, the flow and pressure on the side of the upper conical guide ring away from the side feeding pipe are increased, the fluid is uniformly dispersed in a ring shape to the outside of the middle discharge pipe, and the fluid in the middle discharge pipe and the fluid in the side feeding pipe can be premixed before entering the inner mixing module, so that the fluids of different sources are mixed to a certain extent when entering the inner mixing module.
[0011] In at least some embodiments, the first end of the inner mixing module is fixedly provided with a lower sealing cover, the inner mixing module has a spiral structure, the lower sealing cover is located at one end of the inner mixing module close to the double pipe feeding pipe, and the lower sealing cover and the inner limiting ring are in sealing fit.
[0012] The utility model provides a kind of anti-backflow static mixer, with following beneficial effects:
[0013] The static mixer skillfully utilizes the movable characteristics of the inner mixing module and the lower sealing cover, effectively prevents and controls the backflow of fluid, and moves along the flow direction of fluid during normal fluid flow. The lower sealing cover is separated from the inner limiting ring, so that the fluid can flow smoothly in the main mixing pipe, ensuring the smooth operation of the mixing operation. Once the fluid backflows, the inner mixing module and the lower sealing cover will retreat synchronously under the action of backflow fluid. The lower sealing cover will quickly form a sealing structure with the inner limiting ring, effectively preventing the further spread of backflow fluid and avoiding problems such as uneven mixing, material contamination and equipment damage caused by backflow. The running stability and reliability of the static mixer in complex fluid environment are greatly improved.
[0014] When the fluid enters the double-tube feeding pipe from the side feeding pipe, the upper conical guide ring guides the fluid to be evenly dispersed in an annular manner to the outside of the middle discharging pipe, the fluid in the middle discharging pipe can be premixed with the fluid in the side feeding pipe in advance before entering the inner mixing module, further accelerating the mixing efficiency, so that the fluids of different sources have a certain degree of mixing when entering the inner mixing module, thereby reducing the working burden of the inner mixing module, further accelerating the overall mixing efficiency, through the synergistic effect of the premixing and the inner mixing module, the static mixer can realize uniform mixing faster, meeting the demand for efficient mixing in industrial production. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.
[0016] The drawings described in the following merely relate to some embodiments of the present application, and are not a limitation of the present application.
[0017] In the drawings:
[0018] Figure 1 A schematic view showing the overall structure of the present application is shown;
[0019] Figure 2 A schematic view showing the main mixing pipe half-section structure of the present application is shown;
[0020] Figure 3 A schematic view showing the lower sealing cover moving away from the inner limiting ring state structure of the present application is shown;
[0021] Figure 4 A schematic view showing the main mixing pipe half-section structure of the present application is shown;
[0022] Figure 5 A schematic view showing the double-tube feeding pipe and the middle discharging pipe and the upper conical guide ring half-section structure of the present application is shown;
[0023] Figure 6 A schematic view showing the lower sealing cover and the inner limiting ring sealing state structure of the present application is shown;
[0024] LIST OF REFERENCE NUMERALS
[0025] 1、main mixing pipe; 101、inner limiting ring;
[0026] 2、double-tube feeding pipe; 201、side feeding pipe; 202、lower conical guide ring; 203、middle discharging pipe; 204、upper conical guide ring;
[0027] 3、inner mixing module; 301、lower sealing cover. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model protection.
[0029] Embodiment one: please refer to Figures 1 to 6 :
[0030] The utility model proposes a kind of anti-backflow static mixer, comprising: main mixing pipe 1, double-tube feed pipe 2 and inner mixing module 3, the inside of main mixing pipe 1 is fixedly provided with inner limit ring 101 at interval, the side of inner limit ring 101 towards inner mixing module 3 is provided with the taper inclined plane structure that contracts towards center, inner mixing module 3 is all arranged between inner limit ring 101, inner mixing module 3 is axially slid in the inside of main mixing pipe 1, the helical direction of adjacent inner mixing module 3 is reversely arranged, the first end of main mixing pipe 1 and double-tube feed pipe 2 are fixedly communicated by flange, the middle part of double-tube feed pipe 2 is communicatively provided with side feed pipe 201, the lower part of double-tube feed pipe 2 is fixedly provided with lower taper guide ring 202 in the inside, the upper part of lower taper guide ring 202 is communicatively provided with middle discharge pipe 203, the upper part of double-tube feed pipe 2 is fixedly provided with upper taper guide ring 204 in the inside, upper taper guide ring 204 and lower taper guide ring 202 are gradually reduced and are arranged from bottom to top, the outer wall of middle discharge pipe 203 and the inner wall of double-tube feed pipe 2 are interval arrangement, upper taper guide ring 204 is encircled in the upper outer side of middle discharge pipe 203, fluid is evenly dispersed to the outside of middle discharge pipe 203 in annular mode, the taper design of upper taper guide ring 204 and lower taper guide ring 202 accelerates main fluid flow rate, forms pressure barrier, further strengthens anti-backflow effect, side feed pipe 201 communicates the interval space of middle discharge pipe 203 and double-tube feed pipe 2, side feed pipe 201 is below upper taper guide ring 204, side feed pipe 201 is above lower taper guide ring 202, another fluid is entered into the space between middle discharge pipe 203 and double-tube feed pipe 2 by side feed pipe 201, middle discharge pipe 203 and upper taper guide ring 204 guide fluid to flow upwards, the inside of main mixing pipe 1 is provided with inner mixing module 3.
[0031] In the embodiments of the present disclosure, the inner side of the upper conical guide ring 204 and the outer side of the middle discharge pipe 203 are spaced apart, the outer side of the upper conical guide ring 204 is closer to the side feed pipe 201, the spacing between the inner side of the upper conical guide ring 204 and the middle discharge pipe 203 is smaller, which is beneficial to increase the flow and pressure of the upper conical guide ring 204 away from the side feed pipe 201, so that the fluid is uniformly dispersed in an annular manner to the outer side of the middle discharge pipe 203, and the fluid in the middle discharge pipe 203 and the fluid in the side feed pipe 201 can be premixed before entering the inner mixing module 3, so that the fluids of different sources have a certain degree of mixing when entering the inner mixing module 3, and more uniform mixing effect is achieved in a shorter time and distance.
[0032] In the embodiments of the present disclosure, the first end of the inner mixing module 3 is fixedly provided with a lower sealing cover 301, the inner mixing module 3 has a spiral structure, the lower sealing cover 301 is located at one end of the inner mixing module 3 close to the double-pipe feed pipe 2, and the lower sealing cover 301 and the inner limiting ring 101 are in sealing fit to prevent further diffusion of backflow fluid and avoid problems such as uneven mixing, material pollution and equipment damage caused by backflow.
[0033] In the embodiments of the present disclosure, the first end of the inner mixing module 3 is fixedly provided with a lower sealing cover 301, the inner mixing module 3 has a spiral structure, the lower sealing cover 301 is located at one end of the inner mixing module 3 close to the double-pipe feed pipe 2, and the lower sealing cover 301 and the inner limiting ring 101 are in sealing fit to prevent further diffusion of backflow fluid and avoid problems such as uneven mixing, material pollution and equipment damage caused by backflow.
[0034] The working principle of the embodiment is as follows: the double-tube feeding pipe 2 and the side feeding pipe 201 are respectively communicated with fluid supply pipes that need to be mixed. When the fluid enters from the double-tube feeding pipe 2, the fluid in the double-tube feeding pipe 2 is guided along the lower conical guide ring 202 to converge to the middle discharge pipe 203, the converging fluid increases the fluid pressure in the middle discharge pipe 203, and the fluid pressure is further reduced to reduce the possibility of backflow. Another fluid enters the space between the middle discharge pipe 203 and the double-tube feeding pipe 2 through the side feeding pipe 201. The middle discharge pipe 203 and the upper conical guide ring 204 guide the fluid to flow upward. The upper conical guide ring 204 guides the fluid to converge, and the converging fluid increases the fluid pressure inside the upper conical guide ring 204, and the fluid pressure is further reduced to reduce the possibility of backflow. The upper conical guide ring 204 is eccentrically arranged with a circular hole. The space on the side close to the side feeding pipe 201 is smaller, which is beneficial to increase the flow and pressure on the side away from the side feeding pipe 201 of the upper conical guide ring 204, so that the fluid is uniformly dispersed in a ring shape to the outside of the middle discharge pipe 203. The fluid in the middle discharge pipe 203 and the fluid in the side feeding pipe 201 can be premixed before entering the inner mixing module 3, so that the fluids from different sources have a certain degree of mixing when entering the inner mixing module 3, thereby reducing the working burden of the inner mixing module 3 and further accelerating the overall mixing efficiency. Through the synergistic effect of the premixing and the inner mixing module 3, more uniform mixing effect is achieved in a shorter time and a shorter distance.
[0035] In the process of normal fluid mixing, the inner mixing module 3 with a spiral structure guides the fluid to mix. The inner mixing module 3 and the lower sealing cover 301 move along the flow direction of the fluid. The lower sealing cover 301 moves away from the inner limiting ring 101. The fluid enters the next inner mixing module 3 with a different spiral direction through the inner limiting ring 101, so as to ensure that the fluid can smoothly flow in the main mixing pipe 1 and ensure the smooth operation of the mixing operation. Once the fluid backflows, the inner mixing module 3 and the lower sealing cover 301 will retreat synchronously under the action of the backflow fluid. The lower sealing cover 301 and the inner limiting ring 101 form a sealing structure to prevent the further spread of the backflow fluid, avoid the problems of uneven mixing, material pollution and equipment damage caused by backflow, and improve the operation stability and reliability of the static mixer.
[0036] In this paper, the following points need to be noted:
[0037] 1. The drawings of the embodiment of the disclosure only relate to the structures involved in the embodiment of the disclosure, and other structures can be referred to the general design.
[0038] 2. In the case of no conflict, the embodiments of the disclosure and the features in the embodiments can be combined to obtain new embodiments.
[0039] The above merely describes specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims
1. A backflow prevention static mixer comprising: Main mixing pipe (1), double pipe feeding pipe (2) and internal mixing module (3); characterized in that the head of the main mixing pipe (1) and the double pipe feeding pipe (2) are fixedly communicated through flanges, the internal mixing module (3) is arranged in the main mixing pipe (1), the inner side of the main mixing pipe (1) is fixedly provided with an inner limiting ring (101), and the side of the inner limiting ring (101) facing the internal mixing module (3) is provided with a tapered inclined surface structure converging towards the center.
2. The anti-backflow static mixer according to claim 1, wherein The inner limiting ring (101) is provided with an internal mixing module (3) therebetween, the internal mixing module (3) axially slides in the inner side of the main mixing pipe (1), and the spiral directions of adjacent internal mixing modules (3) are oppositely arranged.
3. The anti-backflow static mixer according to claim 1, wherein The middle part of the double pipe feeding pipe (2) is provided with a side feeding pipe (201) in communication, the lower inner side of the double pipe feeding pipe (2) is fixedly provided with a lower tapered guide ring (202), the upper part of the lower tapered guide ring (202) is provided with a middle discharge pipe (203) in communication, and the upper inner side of the double pipe feeding pipe (2) is fixedly provided with an upper tapered guide ring (204).
4. The anti-backflow static mixer according to claim 3, wherein The middle discharge pipe (203) and the inner wall of the double pipe feeding pipe (2) are spaced apart, and the upper tapered guide ring (204) surrounds the upper outer side of the middle discharge pipe (203).
5. The anti-backflow static mixer according to claim 4, wherein The side feeding pipe (201) communicates the spacing between the middle discharge pipe (203) and the double pipe feeding pipe (2), the side feeding pipe (201) is below the upper tapered guide ring (204), and the side feeding pipe (201) is above the lower tapered guide ring (202).
6. The anti-backflow static mixer according to claim 5, wherein The inner side of the upper tapered guide ring (204) and the outer side of the middle discharge pipe (203) are spaced apart, the outer side of the upper tapered guide ring (204) is closer to the side feeding pipe (201), and the spacing between the inner side of the upper tapered guide ring (204) and the middle discharge pipe (203) is smaller.
7. The anti-backflow static mixer according to claim 1, wherein The head of the internal mixing module (3) is fixedly provided with a lower sealing cover (301), the lower sealing cover (301) is at one end of the internal mixing module (3) close to the double pipe feeding pipe (2), and the lower sealing cover (301) and the inner limiting ring (101) are sealingly matched.