Low-energy-consumption jet mixer for multi-hole blade core drainage

Abstract

The low-energy-consumption jet mixer comprises a front main flow pipe, a mixing pipe and a rear main flow pipe which are fixedly connected in sequence, an inner cavity of the front main flow pipe, an inner cavity of the mixing pipe and an inner cavity of the rear main flow pipe are communicated to form a communicated main flow channel, a blade core support is arranged in the mixing pipe, and the mixing pipe is sleeved with an annular cover. A clamping cavity is formed between the annular cover and the outer wall of the mixing pipe, a drainage hole is formed in the blade core support, a communicating hole for communicating the drainage hole with the clamping cavity is formed in the mixing pipe, a jet flow hole for jetting fluid into the main flow channel is formed in the blade core support, and the jet flow hole is communicated with the drainage hole. The second-phase fluid is jetted into the main flow channel through the multiple jet holes in the blade core support and mixed with the main flow channel in the main flow channel, the mass and heat transfer exchange area is increased, and the mixing uniformity and efficiency are improved; the structure is simple, resistance is small, system pressure drop is reduced, low energy consumption is achieved, and manufacturing cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of static mixers, and in particular to a low-energy consumption jet mixer with porous blade core drainage. Background Art

[0002] Static mixer is a mixing device without moving parts. Its basic working mechanism is to use the mixing unit fixed in the tube to change the flow state of the fluid in the tube, so that two or more streams of fluids are cut, sheared, rotated and remixed, so as to achieve good dispersion and full mixing between the fluids. As a key equipment in the process industry, static mixers are suitable for various scales of process and are widely used in homogenization processes in the fields of chemical industry, food, water treatment and medical treatment.

[0003] The existing static mixer design mainly relies on injecting the second phase fluid into the main fluid pipeline through a coaxial or lateral conduit to mix with the first phase fluid in the mainstream pipeline. In order to effectively promote the mixing of the two fluids, a series of static elements are usually arranged inside the main fluid pipeline. These elements may be inclined, spiral or other geometric shapes. Their function is to disrupt the conventional flow path of the fluid, create shear force and turbulence, thereby accelerating the mixing process of the two fluids. This method is widely used in a variety of industrial applications because its structure is relatively simple, the manufacturing and maintenance costs are low, and it can adapt to the mixing of various types of fluids and fluids with different viscosity levels. However, this type of static mixer also has some obvious limitations. For example, the static pipeline mixer disclosed in Chinese Patent Publication No. CN202569989U, the static mixer disclosed in Chinese Patent Publication No. CN102698630A, etc., this type of static mixer has the following limitations: First, the existing design of this type of static mixer usually requires a larger pipeline diameter and a longer internal component to ensure effective mixing, resulting in a large device volume and increased manufacturing and installation costs. Secondly, since multiple static mixing elements are set inside the pipeline, the fluid will generate large friction losses when passing through these elements, which will cause a significant drop in system pressure, thereby increasing the energy consumption required to pump the fluid. In addition, when dealing with fluids with high viscosity or containing solid particles, the existing technology is prone to problems such as uneven mixing or pipeline blockage, which limits its use in certain industrial applications. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a low energy consumption jet mixer with porous blade core drainage.

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

[0006] A low-energy consumption jet mixer with porous blade core drainage comprises a front main flow pipe, a mixing pipe and a rear main flow pipe which are fixedly connected in sequence, wherein the inner cavities of the front main flow pipe, the mixing pipe and the rear main flow pipe are connected to form a main flow channel which is connected to each other, a blade core bracket is arranged in the mixing pipe, an annular cover is arranged on the outer surface of the mixing pipe, a sandwich cavity is formed between the annular cover and the outer wall of the mixing pipe, a drainage hole is arranged on the blade core bracket, a connecting hole connecting the drainage hole and the sandwich cavity is arranged on the mixing pipe, a jet hole for spraying fluid into the main flow channel is arranged on the blade core bracket, and the jet hole is connected to the drainage hole.

[0007] Furthermore, the blade core support includes a plurality of support rods, which are fixed on the wall of the mixing tube, and the plurality of support rods extend along the wall of the mixing tube toward the center of the mixing tube and intersect at the center of the mixing tube. The plurality of support rods are arranged in an array around the center circumference of the mixing tube, and the drainage holes are arranged along the length direction of the support rods.

[0008] Furthermore, the support rod includes a front plane and a rear plane arranged in parallel along the radial direction of the mixing tube, the front plane and the rear plane are arranged in a staggered manner, the front plane is close to the front main flow tube, the rear plane is close to the rear main flow tube, and a first arc surface and a second arc surface are connected between the front plane and the rear plane, the first arc surface is convexly arranged outside the support rod, and the second arc surface is concavely arranged inside the support rod. By staggering the front plane and the rear plane and setting the convex first arc surface, the main fluid passing through the support rod flows in a spiral, and the concave second arc surface is set on the back of the front plane, so that turbulence and eddy current are formed at the second arc surface position, which is conducive to mixing the main channel fluid with the second phase fluid.

[0009] Furthermore, there are two drainage holes on each support rod, and each drainage hole is provided with multiple spray holes, each of the spray holes includes a first spray hole and a second spray hole, the first spray hole and the second spray hole are cross-arranged, and the fluid in the drainage hole is sprayed along the first spray hole and the second spray hole.

[0010] Furthermore, the first spray hole has an axial angle less than 5° with the mixing tube and passes through the support rod arrangement; the second spray hole has a normal angle less than 5° with the mixing tube and passes through the support rod arrangement.

[0011] Furthermore, a through hole is provided on the blade core support at the center of the mixing tube, which penetrates the blade core support along the axial direction of the mixing tube, so as to facilitate the main fluid to pass through the through hole from the center of the mixing tube.

[0012] Furthermore, a feeding pipe is connected to the ring cover, and the inner cavity of the feeding pipe is connected to the clamping cavity for introducing the second phase fluid into the clamping cavity.

[0013] Furthermore, the blade core support includes 6 support rods; and each drainage hole is provided with 7 spray holes.

[0014] Furthermore, the inner diameter D of the mixing tube is 19 mm, and the axial width L of the blade core support along the mixing tube is 5 mm. The pipeline space requirement is reduced, and the L / D is reduced to 0.2632, which reduces the equipment volume and manufacturing cost. The blade core support has a small width and small resistance, which reduces the system pressure drop.

[0015] The present invention provides a low-energy consumption jet mixer with porous blade core drainage, which has the following beneficial effects: the second phase fluid is sprayed into the main channel through the multiple jet holes on the blade core bracket and mixed with the main fluid in the main channel, thereby increasing the mass transfer and heat transfer exchange area and improving the mixing uniformity and efficiency; by arranging the annular cover, the second phase fluid enters the blade core bracket from the connecting holes of the circumference in the clamping cavity in the annular cover before entering the main channel, thereby improving the uniformity of the second phase fluid sprayed into the main channel, and the structural stability and sealing are enhanced by the raised first arc surface and the multiple jet hole design, while integrating the injection and mixing functions, reducing the pipeline space requirement, reducing the internal friction loss of the pipeline and the system pressure drop, reducing energy consumption, reducing the risk of blockage of high-viscosity fluids or fluids containing solid particles, and improving the versatility and reliability of the mixer; the built-in blade core bracket has a simple structure, a small width, and a small resistance, which reduces the system pressure drop and achieves low energy consumption; the mixing structure is simple, the equipment manufacturing cost is low, and maintenance is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 A schematic diagram of the structure of a low-energy consumption jet mixer with porous blade core drainage provided by the present invention;

[0018] Figure 2 A schematic diagram of a top cross-sectional structure of a low-energy consumption jet mixer with porous blade core drainage provided by the present invention;

[0019] Figure 3 A schematic diagram of the side cross-sectional structure of a low-energy consumption jet mixer with porous blade core drainage provided by the present invention;

[0020] Figure 4 A schematic diagram of the three-dimensional structure of a blade core support in a low-energy consumption jet mixer with porous blade core drainage provided by the present invention;

[0021] Figure 5 A schematic side cross-sectional view of a blade core support in a low-energy consumption jet mixer with porous blade core drainage provided by the present invention;

[0022] Figure 6 A cross-sectional schematic diagram of a support rod in a low-energy consumption jet mixer with porous blade core drainage provided by the present invention.

[0023] Explanation of the numbers in the figure: 1. front main flow pipe; 2. mixing pipe; 21. connecting hole; 3. rear main flow pipe; 4. blade core bracket; 41. drainage hole; 42. jet hole; 421. first jet hole; 422. second jet hole; 43. support rod; 431. front plane; 432. rear plane; 433. first arc surface; 434. second arc surface; 44. through hole; 5. ring cover; 51. clamping cavity; 52. feeding pipe. DETAILED DESCRIPTION

[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0027] like Figure 1-Figure 6 As shown, a low-energy consumption jet mixer with porous blade core drainage comprises a front main flow pipe 1, a mixing tube 2 and a rear main flow pipe 3 which are fixedly connected in sequence, wherein the inner cavities of the front main flow pipe 1, the mixing tube 2 and the rear main flow pipe 3 are connected to form a main flow channel that is connected to each other, a blade core bracket 4 is arranged in the mixing tube 2, an annular cover 5 is arranged on the outer surface of the mixing tube 2, a clamping cavity 51 is formed between the annular cover 5 and the outer wall of the mixing tube 2, a drainage hole 41 is opened on the blade core bracket 4, a connecting hole 21 connecting the drainage hole 41 and the clamping cavity 51 is opened on the mixing tube 2, a jet hole 42 for spraying fluid into the main flow channel is opened on the blade core bracket 4, and the jet hole 42 is connected with the drainage hole 41.

[0028] By adopting the above technical solution, the second phase fluid is sprayed into the main channel through the multiple jet holes 42 on the blade core support 4 and mixed with the main fluid in the main channel, thereby increasing the mass transfer and heat transfer exchange area and improving the mixing uniformity and efficiency; by providing the annular cover 5, the second phase fluid enters the blade core support 4 from the circumferential connecting hole 21 in the clamping cavity 51 in the annular cover 5 before entering the main channel, thereby improving the uniformity of the second phase fluid spraying into the main channel.

[0029] Specifically, the blade core support 4 includes a plurality of support rods 43, which are fixed on the wall of the mixing tube 2, and the plurality of support rods 43 extend along the wall of the mixing tube 2 toward the center of the mixing tube 2 and intersect at the center of the mixing tube 2. The plurality of support rods 43 are arranged in an array around the center circumference of the mixing tube 2, and the drainage holes 41 are arranged along the length direction of the support rods 43.

[0030] Specifically, the support rod 43 includes a front plane 431 and a rear plane 432 which are arranged in parallel along the radial direction of the mixing tube 2. The front plane 431 and the rear plane 432 are arranged in a staggered manner. The front plane 431 is close to the front main flow pipe 1, and the rear plane 432 is close to the rear main flow pipe 3. A first arc surface 433 and a second arc surface 434 are connected between the front plane 431 and the rear plane 432. The first arc surface 433 is convexly arranged outside the support rod 43, and the second arc surface 434 is concavely arranged inside the support rod 43. By staggering the front plane 431 and the rear plane 432, and providing the convex first arc surface 433, the main fluid passing through the support rod 43 is caused to flow in a spiral, and the concave second arc surface 434 is provided at the back of the front plane 431, so that turbulence and eddy current are formed at the position of the second arc surface 434, which is conducive to mixing the main channel fluid with the second phase fluid.

[0031] Specifically, two guide holes 41 are provided on each support rod 43, and multiple jet holes 42 are provided on each guide hole 41. Each jet hole 42 includes a first jet hole 421 and a second jet hole 422. The first jet hole 421 and the second jet hole 422 are arranged crosswise, and the fluid in the guide hole 41 is ejected along the first jet hole 421 and the second jet hole 422. The first jet hole 421 has an axial angle of less than 5° with the mixing tube 2 and is arranged through the support rod 43; the second jet hole 422 has a normal angle of less than 5° with the mixing tube 2 and is arranged through the support rod 43. The first jet hole 421 is consistent with the flow direction of the fluid in the main channel, so that the injected second phase fluid is fully mixed with the main fluid, and the second jet hole 422 intersects with the direction of the fluid in the main channel, so that the fluid rotates to form a vortex mixing.

[0032] Specifically, a through hole 44 is provided on the blade core support 4 at the center of the mixing tube 2 and penetrates the blade core support 4 along the axial direction of the mixing tube 2 , so as to facilitate the main fluid to pass through the through hole 44 from the center of the mixing tube 2 .

[0033] Specifically, the ring cover 5 is connected with a feeding pipe 52 , and the inner cavity of the feeding pipe 52 is communicated with the clamping cavity 51 for introducing the second phase fluid into the clamping cavity 51 .

[0034] Specifically, the blade core support 4 includes six support rods 43 ; and each drainage hole 41 is provided with seven spray holes 42 .

[0035] Specifically, the inner diameter D of the mixing tube 2 is 19 mm, and the axial width L of the blade core support 4 along the mixing tube 2 is 5 mm. The integrated injection and mixing functions reduce the pipeline space requirements, reduce L / D to 0.2632, and reduce the equipment volume and manufacturing cost.

[0036] During operation, the main fluid to be mixed is introduced into the main channel through the front main flow pipe 1, and then flows out from the rear main flow pipe 3 after passing through the mixing pipe 2. By controlling the mass flow rate of the first-phase main fluid and the second-phase fluid, the two-phase flow with initial velocity will fully contact and mix in the main channel, and exchange heat and substances; the second-phase fluid is sprayed into the main channel through the multiple jet holes 42 on the blade core bracket 4, and mixed with the main fluid in the main channel, thereby increasing the mass transfer and heat exchange area, and improving the mixing uniformity and efficiency; by setting the annular cover 5, the second-phase fluid enters the blade core bracket 4 from the peripheral connecting hole 21 in the clamping cavity 51 in the annular cover 5 before entering the main channel, thereby improving the uniformity of the second-phase fluid spraying into the main channel, and the structural stability and sealing are enhanced by the design of the raised first arc surface and the multiple jet holes 42. At the same time, the injection and mixing functions are integrated, the pipeline space requirement is reduced, the internal friction loss of the pipeline and the system pressure drop are reduced, the energy consumption is reduced, the blockage risk of high-viscosity fluids or fluids containing solid particles is reduced, and the versatility and reliability of the mixer are improved.

[0037] Through this solution, the second phase fluid ejected from the second nozzle 422 intersects with the flow direction of the main fluid, thereby forming a local vortex between the fluids. The vortex casting develops into a spiral vortex filament and is transmitted along the inside of the main channel. After the ejected fluid flows through the blade core support 4, there are no other obstacles, so that the vortex filament has sufficient flow space, which can more effectively promote the mixing of the two fluids; and the second phase fluid is dispersed and sprayed into the main fluid through the multiple nozzles 42 on the blade core support 4, and a large number of local turbulent areas are formed at the same time. The spiral flow formed by the injection causes the fluid to undergo multi-layer shearing in the pipeline, further increasing the turbulence intensity. Through the jet holes 42 evenly arranged on the blade core bracket 4, the second phase fluid can be evenly and effectively distributed in the pipeline, ensuring the uniformity of the injected fluid, so that each part of the fluid can be fully contacted and mixed; the first jet hole 421 in the jet hole is arranged along the axial direction, consistent with the flow direction of the main fluid, avoiding excessive fluid reverse vortex, maximizing the mixing efficiency, and reducing the fluid resistance; each jet hole 42 not only injects the second phase fluid into the main fluid, but also works together with the adjacent jet holes 42 to create turbulence and shear force. When the jet fluids of adjacent holes meet, they will collide and interfere with each other, further increasing The turbulence is increased to promote faster fluid mixing. The interaction between the jets of adjacent holes can prevent the generation of mixing dead corners and ensure uniform mixing of the fluids in the pipeline. A more complex fluid motion pattern can be created by setting the first jet hole 421 and the second jet hole 422 in different directions. The multi-directional jet fluid forms an interlaced fluid trajectory and creates multi-directional fluid motion, which can break the laminar structure and generate a more complex vortex field. The jet holes in different directions can also ensure that the mixer can adaptively adjust the turbulence intensity and shear effect when processing fluids with different flow rates and viscosities, thereby improving the adaptability and efficiency of the device.

[0038] The parts not involved in this technical solution can be implemented by using existing technologies.

[0039] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of the present invention to be protected includes the attached claims and their equivalents.

Claims

1. A low energy consumption jet mixer with porous blade core drainage, characterized in that: The invention comprises a front main flow pipe (1), a mixing pipe (2) and a rear main flow pipe (3) which are fixedly connected in sequence, wherein the inner cavities of the front main flow pipe (1), the mixing pipe (2) and the rear main flow pipe (3) are connected to form a main flow channel which is in communication with each other, a blade core support (4) is arranged in the mixing pipe (2), an annular cover (5) is arranged on the outer shell of the mixing pipe (2), a clamping cavity (51) is formed between the annular cover (5) and the outer wall of the mixing pipe (2), a drainage hole (41) is provided on the blade core support (4), a connecting hole (21) connecting the drainage hole (41) and the clamping cavity (51) is provided on the mixing pipe (2), and a jet hole (42) for spraying fluid into the main flow channel is provided on the blade core support (4), and the jet hole (42) is connected to the drainage hole (41).

2. A low energy consumption jet mixer with porous blade core drainage according to claim 1, characterized in that: The blade core support (4) comprises a plurality of support rods (43), the plurality of support rods (43) being fixed on the wall of the mixing tube (2), and the plurality of support rods (43) extending along the tube wall of the mixing tube (2) toward the center of the mixing tube (2) and intersecting at the center of the mixing tube (2), the plurality of support rods (43) being arranged in an array around the center circumference of the mixing tube (2), and the drainage holes (41) being arranged along the length direction of the support rods (43).

3. A low energy consumption jet mixer with porous blade core drainage according to claim 2, characterized in that: The support rod (43) comprises a front plane (431) and a rear plane (432) which are arranged in parallel along the radial direction of the mixing tube (2); the front plane (431) and the rear plane (432) are arranged in a staggered manner; the front plane (431) is close to the front main flow tube (1); the rear plane (432) is close to the rear main flow tube (3); a first curved surface (433) and a second curved surface (434) are connected between the front plane (431) and the rear plane (432); the first curved surface (433) is convex toward the outside of the support rod (43); and the second curved surface (434) is concave toward the inside of the support rod (43).

4. A low energy consumption jet mixer with porous blade core drainage according to claim 2, characterized in that: Two drainage holes (41) are arranged on each support rod (43), and each drainage hole (41) is provided with a plurality of spray holes (42), and each spray hole (42) includes a first spray hole (421) and a second spray hole (422), and the first spray hole (421) and the second spray hole (422) are arranged crosswise, and the fluid in the drainage hole (41) is sprayed along the first spray hole (421) and the second spray hole (422).

5. A low energy consumption jet mixer with porous blade core drainage according to claim 4, characterized in that: The first spray hole (421) has an axial angle with the mixing tube (2) of less than 5° and is arranged through the support rod (43); the second spray hole (422) has a normal angle with the mixing tube (2) of less than 5° and is arranged through the support rod (43).

6. A low energy consumption jet mixer with porous blade core drainage according to claim 2, characterized in that: A through hole (44) is provided on the blade core support (4) at the center of the mixing tube (2) and penetrates the blade core support (4) along the axial direction of the mixing tube (2).

7. A low energy consumption jet mixer with porous blade core drainage according to claim 2, characterized in that: The ring cover (5) is connected to a feeding pipe (52), and the inner cavity of the feeding pipe (52) is communicated with the clamping cavity (51) for introducing the second phase fluid into the clamping cavity (51).

8. A low energy consumption jet mixer with porous blade core drainage according to claim 4, characterized in that: The blade core support (4) comprises six support rods (43); and each drainage hole (41) is provided with seven spray holes (42).

9. A low energy consumption jet mixer with porous blade core drainage according to claim 2, characterized in that: The inner diameter D of the mixing tube (2) is 19 mm, and the axial width L of the blade core support (4) along the mixing tube (2) is 5 mm.

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