Corrosion resistant composite injector

Abstract

The utility model relates to a kind of composite ejector of corrosion-resistant scouring in the field of ejector, including composite pipe and nozzle, nozzle lower end is embedded in the upper end of composite pipe, and the inclined feed inlet extending downward is equipped with in the composite pipe periphery side, annular cavity is opened in the composite pipe, and annular cavity is the egg-shaped cavity that both ends are formed arc concave;Wherein, the material movement path entering by inclined feed inlet extends to the bottom of annular cavity, and the mixing chamber inlet of mixed cavity is opened in the bottom of annular cavity and is connected with mixed cavity inside composite pipe;Composite pipe lower end is opened with the diffusion discharge port being communicated with the lower end of mixed cavity, using above-mentioned annular cavity and inclined feed inlet etc. Structure, realize that material can complete fast and uniform mixing in smaller space, so as to not need to set up longer mixing diffusion pipeline to carry out final homogenization, while shortening mixing diffusion pipeline, also improve homogenization effect, reach the purpose of saving material.

Description

Technical Field

[0001] This utility model relates to a corrosion-resistant composite jetting device, and more particularly to a corrosion-resistant composite jetting device for use in the field of jetting devices. Background Technology

[0002] As a chemical equipment that simultaneously performs vacuum and mixing functions, the ejector is widely used in various sub-sectors of the chemical industry and is a common piece of equipment in the chemical industry.

[0003] To address the issue of short service life of traditional injectors under high-temperature and highly corrosive conditions, a certain graphite jet mixer on the market adopts a graphite cylinder design and has a certain market share.

[0004] Chinese utility model patent CN214809936U discloses a novel graphite jet mixer, comprising a carbon steel cylinder, an upper graphite cylinder, a lower graphite cylinder, and a spiral nozzle. The carbon steel cylinder is fitted over the outer sides of the upper and lower graphite cylinders. The upper graphite cylinder has a liquid inlet at its top. A graphite tube is located between the upper and lower graphite cylinders, with its lower end extending into the lower graphite cylinder. The graphite tube contains interconnected upper and lower feed holes. The upper feed hole communicates with the liquid inlet, and the lower feed hole communicates with the lower graphite cylinder. An air inlet is located on the side wall of the lower graphite cylinder, and a spiral nozzle is located at its bottom. This novel graphite jet mixer uses graphite as the cylinder material, and the spiral nozzle at the lower end of the cylinder effectively improves the jet mixer's high-temperature and corrosion resistance, as well as the material mixing effect, thus effectively extending the jet mixer's service life.

[0005] Existing injectors generally use a vertical feeding or air (or liquid) method to spray and mix different substances. The mixing area is mostly below the nozzle. However, because the pressure in the mixing area is relatively low compared to the inside of the nozzle, it is difficult to achieve uniform mixing of different substances in one go. As a result, a long mixing and diffusion pipe needs to be set in the rear section of the injector to achieve a secondary homogenization effect. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a structure that can form a rapid and uniform mixing effect in the nozzle area, thereby reducing the length of the rear section of the existing injector, saving materials while ensuring improved homogeneity.

[0007] To solve the above problems, this utility model provides a corrosion-resistant composite jetting device, including a composite tube and a nozzle. The lower end of the nozzle is fitted into the upper end of the composite tube. The composite tube has an inclined feed port extending downward on its periphery. An annular cavity is opened inside the composite tube. The annular cavity is an egg-shaped cavity with both the upper and lower ends forming an arc-shaped concave shape.

[0008] The material movement path entering through the inclined feed inlet extends to the bottom of the annular cavity, and the bottom of the annular cavity is provided with a mixing chamber inlet that connects to the mixing chamber inside the composite pipe.

[0009] The lower end of the composite pipe is provided with a diffusion outlet that communicates with the lower end of the mixing chamber.

[0010] In the aforementioned corrosion-resistant composite jetting device, the combination of an egg-shaped annular cavity and an inclined feed inlet allows the material to be quickly and uniformly mixed in a small space. This eliminates the need for a long mixing and diffusion pipe for final homogenization, thus shortening the mixing and diffusion pipe and improving the homogenization effect, thereby saving materials.

[0011] As a further improvement of this application, a diversion guide ring is fixed to the inner wall of the annular cavity. The cross-section of the diversion guide ring is a crescent shape with an upward curve. The diversion guide ring bends toward the upper part of the annular cavity and guides part of the material entering the inclined feed port to the upper part of the annular cavity.

[0012] As a further improvement of this application, the diversion guide ring is located at the upper part of the connection between the inclined feed port and the annular cavity, and the diversion guide ring guides less than half of the material to move towards the upper part of the annular cavity.

[0013] As a further improvement of this application, a top arc-shaped guide groove and a bottom arc-shaped guide groove are formed at the upper and lower ends of the annular cavity, respectively. The curvature of the bottom arc-shaped guide groove is greater than that of the top arc-shaped guide groove. The material passing through the bottom arc-shaped guide groove moves to the top of the mixing chamber inlet, and the material passing through the top arc-shaped guide groove moves to the bottom of the nozzle.

[0014] As another improvement of this application, a material passage hole is provided on the inner wall of the bottom arc-shaped guide groove near the mixing chamber inlet. The material passage hole extends into the mixing chamber inlet and connects the mixing chamber inlet with the bottom arc-shaped guide groove. The material passage hole is a funnel-shaped hole, and the diameter of the end of the material passage hole that connects with the bottom arc-shaped guide groove is smaller than that of the other end.

[0015] As another improvement of this application, a connecting throat is formed at the upper end of the diffusion outlet. The inner diameter of the connecting throat is smaller than the inner diameter of the opening of the diffusion outlet. The connecting throat is located at the lower end of the mixing chamber and communicates with the mixing chamber.

[0016] In summary, by utilizing an annular cavity with an egg-shaped cross-section in conjunction with an inclined feed inlet, the material enters the annular cavity through the inclined feed inlet and forms an inclined vortex. Due to the jetting effect of the nozzle, the material circulates within the egg-shaped cross-section of the annular cavity, resulting in tangential mixing of the material entering through the inclined feed inlet and the nozzle. The pressure difference within the annular cavity allows for rapid homogenization. The material then enters the mixing chamber through the mixing chamber inlet to complete the final homogenization before being ejected from the diffusion outlet. This allows the material to be rapidly and uniformly mixed in a small space, eliminating the need for a long mixing and diffusion pipe for final homogenization. While retaining the mixing and diffusion pipe, the length of the rear section of the composite ejector is reduced, thereby saving materials and improving the homogenization effect. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment of this application;

[0018] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of material flow and mixing in an embodiment of this application.

[0020] Explanation of the labels in the diagram:

[0021] 1. Composite pipe, 101 Inclined feed inlet, 102 Diffusion outlet, 103 Annular cavity, 1031 Bottom arc-shaped guide groove, 1032 Top arc-shaped guide groove, 104 Mixing chamber inlet, 105 Through hole, 106 Connecting throat, 2. Nozzle, 3. Diverting guide ring, a1 Initial mixing zone, a2 Secondary mixing zone, a3 Total material mixing zone. Detailed Implementation

[0022] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0023] Implementation method:

[0024] Figure 1-3 A corrosion-resistant composite jetting device is shown, comprising a composite tube 1 and a nozzle 2. The lining or the entire composite tube 1 and nozzle 2 are made of graphite material to ensure good corrosion resistance and erosion resistance. The lower end of the nozzle 2 is fitted into the upper end of the composite tube 1. The composite tube 1 is provided with an inclined feed port 101 extending downward on its periphery. An annular cavity 103 is provided inside the composite tube 1. The annular cavity 103 is an egg-shaped cavity with arc-shaped concave ends.

[0025] The material movement path entering through the inclined feed inlet 101 extends to the bottom of the annular cavity 103, and the bottom of the annular cavity 103 is provided with a mixing cavity inlet 104 that connects to the mixing cavity inside the composite pipe 1.

[0026] The lower end of the composite pipe 1 is provided with a diffusion outlet 102 that communicates with the lower end of the mixing chamber.

[0027] Based on the above structure, the annular cavity 103 with an egg-shaped cross-section is combined with the inclined feed port 101, so that the material enters the annular cavity 103 through the inclined feed port 101 and forms an inclined vortex. Due to the jetting effect of the nozzle 2, the material forms a circulating flow state within the egg-shaped cross-section of the annular cavity 103, thereby making the material entering through the inclined feed port 101 and the nozzle 2 tangentially mixed. The pressure difference within the annular cavity 103 makes the two mix quickly and evenly. Then, the material enters the mixing chamber through the mixing chamber inlet 104 to complete the final mixing, and is then ejected from the diffusion outlet 102. This allows the material to be quickly and evenly mixed in a small space (annular cavity 103 and mixing chamber), thus eliminating the need for a long mixing and diffusion pipe for final homogenization. While retaining the mixing and diffusion pipe (i.e., the diffusion outlet 102 section), the length of the rear section of the composite injector is reduced, thereby saving materials and improving the homogenization effect.

[0028] Furthermore, a diversion guide ring 3 is fixed to the inner wall of the annular cavity 103. The cross-section of the diversion guide ring 3 is an upward-curving crescent shape. The diversion guide ring 3 is located at the upper part of the connection between the inclined feed port 101 and the annular cavity 103. The diversion guide ring 3 bends towards the upper part of the annular cavity 103 and guides part of the material entering from the inclined feed port 101 to the upper part of the annular cavity 103. The material guided by the diversion guide ring 3 is less than half of the material entering from the inclined feed port 101.

[0029] By setting the diversion guide ring 3, the material entering through the inclined feed port 101 is divided into two parts. One part is guided by the diversion guide ring 3 to move to the upper part of the annular cavity 103, while the other part continues to move to the bottom of the annular cavity 103. This allows the material to be directly mixed with the substance sprayed from the nozzle 2 from both the upper and lower ends of the annular cavity 103. The material in the upper part is less and can be initially mixed, while the material in the lower part is more and can be fully mixed. The mixed material then enters the mixing chamber for final mixing, achieving multiple mixing effects over a short distance, thus improving the mixing quality and efficiency.

[0030] Furthermore, the annular cavity 103 has a top arc-shaped guide groove 1032 and a bottom arc-shaped guide groove 1031 formed at its upper and lower ends, respectively. The curvature of the bottom arc-shaped guide groove 1031 is greater than that of the top arc-shaped guide groove 1032. The material passing through the bottom arc-shaped guide groove 1031 moves to above the mixing chamber inlet 104 (i.e., Figure 3 In the initial mixing zone a1), the material moves through the top arc-shaped guide groove 1032 to below the nozzle 2 (i.e., Figure 3 (in the secondary mixing region a2).

[0031] Furthermore, a material passage hole 105 is provided on the inner wall of the bottom arc-shaped guide groove 1031 near the mixing chamber inlet 104. The material passage hole 105 penetrates into the mixing chamber inlet 104 and connects the mixing chamber inlet 104 with the bottom arc-shaped guide groove 1031. The material passage hole 105 is a trumpet-shaped hole, and the diameter of the end of the material passage hole 105 that connects with the bottom arc-shaped guide groove 1031 is smaller than that of the other end.

[0032] Through the material passage 105, and due to the pressure difference between the mixing chamber inlet 104 and the annular cavity 103, some material can enter the mixing chamber inlet 104 through the material passage 105 (i.e., enter the annular cavity 103). Figure 3 As shown in the figure, the mixing chamber inlet 104 and the mixing chamber form a total material mixing area a3, thereby achieving the effect of sucking in and mixing materials that may settle in the bottom arc-shaped guide groove 1031, avoiding the material settling in the bottom arc-shaped guide groove 1031, and also ensuring that the material is fully mixed.

[0033] Furthermore, in order to ensure the smooth flow of the mixed material, a connecting throat 106 is formed at the upper end of the diffuser outlet 102. The inner diameter of the connecting throat 106 is smaller than the inner diameter of the opening of the diffuser outlet 102. The connecting throat 106 is located at the lower end of the mixing chamber and communicates with the mixing chamber. The structure of the connecting throat 106 is retained, which ensures that the mixed material can be smoothly sprayed out from the diffuser outlet 102. Although the length of the rear section of the composite injector is shortened, it can still play a good spraying role.

[0034] It should be further noted that the mixing cavity is existing technology. In this embodiment, the mixing cavity refers to the cavity between the upper part of the throat 106 and the lower part of the mixing cavity inlet 104.

[0035] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A corrosion-resistant composite jetting device, comprising a composite tube (1) and a nozzle (2), wherein the lower end of the nozzle (2) is fitted into the upper end of the composite tube (1), characterized in that: The composite tube (1) has an inclined feed port (101) extending downward on its periphery, and an annular cavity (103) is formed inside the composite tube (1). The annular cavity (103) is an egg-shaped cavity with arc-shaped concave ends. The material movement path entering through the inclined feed inlet (101) extends to the bottom of the annular cavity (103), and the bottom of the annular cavity (103) is provided with a mixing cavity inlet (104) that connects to the mixing cavity inside the composite pipe (1). The lower end of the composite pipe (1) is provided with a diffusion outlet (102) that communicates with the lower end of the mixing chamber.

2. The corrosion-resistant composite jetting device according to claim 1, characterized in that: The inner wall of the annular cavity (103) is fixed with a diversion guide ring (3). The cross section of the diversion guide ring (3) is an upward-curving crescent shape. The diversion guide ring (3) bends toward the upper part of the annular cavity (103) and guides part of the material entering the inclined feed port (101) to the upper part of the annular cavity (103).

3. The corrosion-resistant composite jetting device according to claim 2, characterized in that: The diversion guide ring (3) is located at the upper part of the connection between the inclined feed inlet (101) and the annular cavity (103). The diversion guide ring (3) guides less than half of the material to move to the upper part of the annular cavity (103).

4. The corrosion-resistant composite jetting device according to claim 3, characterized in that: The annular cavity (103) has a top arc-shaped guide groove (1032) and a bottom arc-shaped guide groove (1031) formed at its upper and lower ends, respectively. The curvature of the bottom arc-shaped guide groove (1031) is greater than that of the top arc-shaped guide groove (1032). The material passing through the bottom arc-shaped guide groove (1031) moves to the top of the mixing chamber inlet (104), and the material passing through the top arc-shaped guide groove (1032) moves to the bottom of the nozzle (2).

5. The corrosion-resistant composite jetting device according to claim 4, characterized in that: The bottom arc-shaped guide groove (1031) has a material passage hole (105) on the inner wall near the mixing chamber inlet (104). The material passage hole (105) extends into the mixing chamber inlet (104) and connects the mixing chamber inlet (104) with the bottom arc-shaped guide groove (1031). The material passage hole (105) is a trumpet-shaped hole. The diameter of the end of the material passage hole (105) that connects with the bottom arc-shaped guide groove (1031) is smaller than that of the other end.

6. The corrosion-resistant composite jetting device according to claim 1, characterized in that: The upper end of the diffusion outlet (102) is formed with a connecting throat (106), the inner diameter of the connecting throat (106) is smaller than the opening inner diameter of the diffusion outlet (102), and the connecting throat (106) is located at the lower end of the mixing chamber and communicates with the mixing chamber.

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