Boosting circulation ejector

Abstract

The utility model provides a boosting circulation ejector. The ejector comprises an ejector body, a piston and a piston rod, the space constraint shaft is arranged in the ejector body, the space constraint shaft and the ejector body are coaxially arranged, and an annular connecting section, an annular gradually-shrinking section and an annular gradually-expanding section are sequentially formed between the ejector body and the space constraint shaft from the head end to the tail end; and the partition plate is arranged in an annular space between the ejector body and the space constraint shaft, and the two side edges of the partition plate are connected with the ejector body and the space constraint shaft correspondingly. The space constraint shaft and the partition plate are arranged in the ejector body, so that the boosting circulation capacity of the ejector can be improved, meanwhile, the driving air volume is obviously reduced, generation of nitric oxide is favorably reduced, the parallel-flow calcining process of the annular sleeve kiln is newly improved, heat in the kiln is accelerated to circulate, and the energy consumption is reduced. Not only is the quality of lime calcination improved, but also the generation of nitrogen oxides in the kiln is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ejectors, and more particularly to a boosting cycle ejector. Background Art

[0002] The driving air system of the sleeve kiln is a closed-loop system in which the driving air passes through the ejector to form a high-pressure air flow that passes through the combustion chamber, the parallel flow zone, and the lower inner sleeve. The circulating air flow under high pressure can promote the uniform distribution of heat and heat energy transfer. However, at present, the boosting cycle capacity of the ejector is insufficient to meet the demand, resulting in the quality of lime calcination being difficult to meet the production requirements. Summary of the Invention

[0003] In view of this, the utility model provides a boosting cycle ejector, aiming to solve the problem that the boosting cycle capacity of the existing ejector is insufficient to meet the demand.

[0004] The utility model provides a boosting cycle ejector, which includes: an ejector body; a space constraint shaft disposed inside the ejector body and coaxially arranged with the ejector body, and an annular connection section, an annular tapered section, and an annular expanding section are sequentially formed between the ejector body and the space constraint shaft from the head end to the tail end; a partition plate disposed in the annular space between the ejector body and the space constraint shaft, and two side edges of the partition plate are respectively connected to the ejector body and the space constraint shaft, and are used for dividing the annular space between the ejector body and the space constraint shaft into a plurality of boosting zones.

[0005] Further, for the above-mentioned boosting cycle ejector, the head end to the tail end of the space constraint shaft are sequentially a straight-through section, a diameter-expanding section, and a diameter-reducing section. An annular connection section is formed between the ejector body and the straight-through section, an annular tapered section is formed between the ejector body and the diameter-expanding section, and an annular expanding section is formed between the ejector body and the diameter-reducing section.

[0006] Further, for the above-mentioned boosting cycle ejector, an intermediate straight-through connection section is further provided between the diameter-expanding section and the diameter-reducing section.

[0007] Further, for the above-mentioned boosting cycle ejector, an inner constriction is provided on the inner wall of the head end of the ejector body, which is used to increase the flow rate by constricting the opening.

[0008] Further, for the above-mentioned boosting cycle ejector, the diameter of the inner constriction gradually becomes smaller, which is used to increase the flow rate by constricting the opening.

[0009] Further, for the above-mentioned boosting cycle ejector, an annular notch is provided on the outer wall of the head end of the ejector body, which is used to be embedded and docked to the corresponding connecting components.

[0010] Furthermore, in the above-mentioned boost cycle ejector, an externally contracted opening is provided on the outer wall at the end of the ejector body.

[0011] Furthermore, in the above-mentioned boost cycle ejector, there are multiple partition plates, which are evenly distributed on the outer periphery of the space constraint axis.

[0012] Furthermore, in the above-mentioned boost cycle ejector, the space constraint axis is made of circular steel structure.

[0013] Furthermore, in the above-mentioned boost cycle ejector, the partition plates are made of steel plate structure.

[0014] The boost cycle ejector provided by the present utility model can improve the boost cycle ability of the ejector by arranging a space constraint axis and partition plates in the ejector body, making the boost cycle ability of the ejector significantly improved. At the same time, the driving air volume is significantly reduced, which is beneficial to reducing the generation of nitrogen oxides, and the countercurrent calcination process of the annular sleeve kiln has been newly improved. The accelerated circulation of heat in the kiln not only improves the quality of lime calcination, but also effectively reduces the generation of nitrogen oxides in the kiln. In addition, the boost cycle ejector also has the following effects:

[0015] 1. The circulating air volume increases;

[0016] 2. The ejector efficiency is improved and the secondary combustion air coefficient is reduced;

[0017] 3. The energy consumption is reduced and the nitrogen oxides are effectively reduced;

[0018] 4. The scaling phenomenon of the ejector is reduced. Description of the Drawings

[0019] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0020] Figure 1 is the longitudinal sectional view of the boost cycle ejector provided by the embodiment of the present utility model;

[0021] Figure 2 is the structural schematic diagram of the cooperation between the axis and the boost cycle ejector in the boost cycle ejector provided by the embodiment of the present utility model;

[0022] Figure 3 is the cross-sectional view of the boost cycle ejector provided by the embodiment of the present utility model. Detailed Embodiments

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] Referring to Figures 1 to 3 , which shows a preferred structure of the boosting circulating ejector provided by the embodiment of the present utility model. As shown in the figure, the boosting circulating ejector includes: an ejector body 1, a space constraint shaft 2, and at least one partition plate 3; wherein,

[0025] The space constraint shaft 2 is arranged inside the ejector body 1 and coaxially with the ejector body 1. An annular connection section 4, an annular tapered section 5, and an annular divergent section 6 are sequentially formed between the ejector body 1 and the space constraint shaft 2 from the head end to the tail end. Specifically, the ejector body 1 can be a cylindrical structure with openings at both ends, which is coaxially sleeved on the outer periphery of the space constraint shaft 2. Moreover, both ends of the ejector body 1 and the space constraint shaft 2 (such as Figure 1 the upper and lower ends shown, namely the head end and the tail end) can be arranged flush. From the head end to the tail end, that is, as shown in Figure 1 from top to bottom, an annular connection section 4, an annular tapered section 5, and an annular divergent section 6 are sequentially formed between the ejector body 1 and the space constraint shaft 2.

[0026] The partition plate 3 is arranged in the annular space between the ejector body 1 and the space constraint shaft 2. Both side edges of the partition plate 3 are respectively connected to the ejector body 1 and the space constraint shaft 2, and are used to divide the annular space between the ejector body 1 and the space constraint shaft 2 into multiple boosting zones. Through the arrangement of the space constraint shaft 2 and the partition plate 3, quantitative drainage can be achieved, the flow rate can be increased, so as to improve the boosting circulation ability of the sleeve kiln ejector, solve the problem that the boosting circulation ability of the existing ejector is insufficient to meet the requirements, and the high-efficiency injection technology has newly improved the co-current calcination process of the annular sleeve kiln. The accelerated circulation of heat in the kiln not only improves the quality of lime calcination, but also effectively reduces the generation of nitrogen oxides in the kiln. In this embodiment, there can be multiple partition plates 3, which are evenly distributed on the outer periphery of the space constraint shaft 2. As shown in Figure 2 , there are three partition plates 3, and the 360° on the outer periphery of the space constraint shaft 2 is evenly divided into 3 points. The three partition plates 3 are respectively placed at the 3 points.

[0027] Continuing to refer to Figure 1 , the head end of the ejector body 1 (such asFigure 1 The outer wall of the upper end (as shown) is provided with an annular notch 11 for being embedded and docked to corresponding connecting components, facilitating the embedded docking with the upper interface and realizing the connection between the upper part and the injector body 1. Among them, the annular notch 11 is arranged around the outer circumference of the injector body 1 in a full circle, forming an annular groove structure, which can be snapped onto the upper components.

[0028] Continue to refer to Figure 1 , the inner wall of the first end of the injector body 1 is provided with a constricted opening 12 for increasing the flow rate by constricting the opening. Specifically, the inner wall of the first end of the injector body 1 is an inverted conical surface structure, forming a constricted opening structure. That is to say, from top to bottom, the inner diameter of the top of the injector body 1 gradually decreases. That is to say, the diameter of the constricted opening 12 gradually becomes smaller, for increasing the flow rate by constricting the opening. That is, the diameter of the constricted opening 12 becomes smaller from top to bottom, for constricting the opening and facilitating the increase of the flow rate. In this embodiment, the outer wall of the end (such as Figure 1 the lower end as shown) of the injector body 1 is provided with an outer constricted opening 13. That is to say, from top to bottom, the outer diameter of the lower part of the injector body 1 gradually decreases, so that the outer diameter of the end of the injector body 1 is consistent with the diameter of the first port of the injector body 1.

[0029] Continue to refer to Figure 1 and Figure 3 , from the first end (such as Figure 3 the upper end as shown) to the end (such as Figure 3 the lower end as shown) of the space constraint shaft 2 are successively a straight-through section 21, an expanded diameter section 22 and a reduced diameter section 23. An annular connection section 4 is formed between the injector body 1 and the straight-through section 21. An annular gradually decreasing section 5 is formed between the injector body 1 and the expanded diameter section 22. An annular gradually increasing section 6 is formed between the injector body 1 and the reduced diameter section 23. Specifically, the outer diameters of the straight-through section 21 are equal, and an annular connection section 4 is formed by enclosing between its outer circumference and the injector body 1. The outer diameter of the expanded diameter section 22 gradually increases from top to bottom, and an annular gradually decreasing section 5 is formed by enclosing between its outer circumference and the injector body 1. That is, the distance between the outer circumference of the expanded diameter section 22 and the injector body 1 gradually decreases from top to bottom. The outer diameter of the reduced diameter section 23 gradually decreases from top to bottom, and an annular gradually increasing section 6 is formed by enclosing between its outer circumference and the injector body 1. That is, the distance between the outer circumference of the reduced diameter section 23 and the injector body 1 gradually increases from top to bottom. In this embodiment, for buffering, preferably, an intermediate straight-through connection section 24 is further provided between the expanded diameter section 22 and the reduced diameter section 23. A buffer section is formed by enclosing between the intermediate straight-through connection section 24 and the injector body 1, which can buffer the high-pressure air flow. Among them, the space constraint shaft 2 can be a round steel with a diameter of 16 mm and a length of 90 mm. The arrangement of the straight-through section 21, the expanded diameter section 22 and the reduced diameter section 23 facilitates positioning and drainage. In particular, the purpose of the arrangement of the reduced diameter section 23 is to increase the flow rate and pressure.

[0030] In this embodiment, the top end of the partition plate 3 is connected to the lower part of the straight-through section 21, and the bottom end of the partition plate 3 is connected to the junction of the diameter-expanded section 22 and the intermediate straight-through connection section 24. Among them, the partition plate 3 is a steel plate with a thickness of 5 mm, a length of 14 mm, and a width of 50 mm, and a bevel corresponding to the space constraint axis is also cut.

[0031] In summary, for the boost cycle ejector provided in this embodiment, by arranging a space constraint axis and a partition plate inside the ejector body, the velocity of the fluid is increased and the static pressure is reduced at the narrowest spacing between the ejector body and the space constraint axis, thereby generating a pressure difference here, which can improve the boost cycle ability of the ejector, significantly enhancing the boost cycle ability of the ejector. At the same time, the driving air volume is significantly reduced, which is beneficial to reducing the generation of nitrogen oxides, and the co-current calcination process of the annular sleeve kiln has been newly improved. The accelerated circulation of heat in the kiln not only improves the quality of lime calcination but also effectively reduces the generation of nitrogen oxides in the kiln. In addition, the boost cycle ejector also has the following effects:

[0032] 1. The circulating air volume increases;

[0033] 2. The ejector efficiency is improved and the secondary combustion air coefficient is reduced;

[0034] 3. The energy consumption is reduced and the nitrogen oxides are effectively reduced;

[0035] 4. The scaling phenomenon of the ejector is reduced.

[0036] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A boost cycle ejector, characterized in that: include: Injector body; A space constraint shaft is disposed inside the injector body and coaxially arranged with the injector body, wherein an annular connecting section, an annular tapered section and an annular gradually expanding section are sequentially formed between the injector body and the space constraint shaft from the head end to the tail end; A partition plate is arranged in the annular space between the injector body and the space constraint axis. Two sides of the partition plate are respectively connected to the injector body and the space constraint axis, and are used to divide the annular space between the injector body and the space constraint axis into a plurality of boost zones.

2. The boost cycle ejector according to claim 1, characterized in that: The space constraint shaft is composed of a straight-through section, an expanded diameter section and a reduced diameter section from the beginning to the end, an annular connecting section is formed between the injector body and the straight-through section, an annular tapered section is formed between the injector body and the expanded diameter section, and an annular tapered section is formed between the injector body and the reduced diameter section.

3. The boost cycle ejector according to claim 2, characterized in that: An intermediate straight-through connecting section is also provided between the diameter-expanding section and the diameter-reducing section.

4. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: The inner wall of the first end of the injector body is provided with an inner contraction for increasing the flow rate by contraction.

5. The boost cycle ejector according to claim 4, characterized in that: The diameter of the inner shrinkage opening gradually decreases, so as to increase the flow rate by shrinking the opening.

6. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: The outer wall of the first end of the injector body is provided with an annular notch for embedding and docking with the corresponding connecting component.

7. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: The outer wall at the end of the injector body is provided with an outer shrinkage opening.

8. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: There are a plurality of partition plates, which are evenly distributed around the periphery of the space constraint axis.

9. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: The space constraint shaft is a round steel structure.

10. The boost circulation ejector according to any one of claims 1 to 3, characterized in that: The partition plate is a steel plate structure.

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