A cyclone barrel

Abstract

This invention relates to the field of cement kiln technology, and more particularly to a cyclone separator, comprising an outer cylinder, which includes a volute casing and a feeding cylinder. The outlet of the volute casing is connected to the inlet of the feeding cylinder, thereby forming a centrifugal channel. At least one of the outer walls of the volute casing and the feeding cylinder has a protrusion, which forms an outwardly protruding space near the side of the centrifugal channel. The outwardly protruding space is connected to the centrifugal channel. Under the action of centrifugal force, some large-diameter dust particles are thrown into the outwardly protruding spaces and finally flow out of the outer cylinder through the outlet of the feeding cylinder, thus being separated, thereby improving the dust separation efficiency of the cyclone separator. When the airflow in the centrifugal channel flows to the outwardly protruding space under the action of centrifugal force, some of the outer edge airflow is thrown into the outwardly protruding space, causing the airflow velocity to decrease. The airflow in the outer cylinder thus swirls once, resulting in frequent intermittent deceleration, which can reduce the resistance loss of the cyclone separator.

Description

Technical Field

[0001] This invention relates to the field of cement kiln technology, and in particular to a cyclone separator. Background Technology

[0002] The primary function of the cyclone separator in a cement industry preheater system is to achieve gas-solid separation. The principle is that dust in the flue gas is separated by centrifugal force and then, under its own gravity, slides down the cylinder wall and is discharged from the discharge port. For the cyclone separator, separation efficiency and resistance loss are the two most important indicators. To improve separation efficiency, a conventional method is to install a flow guiding device inside the cyclone separator, but this simultaneously increases resistance loss. To reduce resistance loss, structural dimensions are often adjusted, such as increasing the inlet area or the cylinder diameter, but this reduces separation efficiency. Therefore, separation efficiency and resistance loss are two mutually influential yet contradictory factors. Summary of the Invention

[0003] This invention provides a cyclone separator to address one of the shortcomings of the prior art, thereby improving separation efficiency, reducing resistance loss, and ultimately enhancing the overall system performance.

[0004] The present invention provides a cyclone separator, comprising an outer cylinder body, the outer cylinder body including a volute housing and a feeding cylinder, wherein the outlet of the volute housing is connected to the inlet of the feeding cylinder, so that the volute housing and the feeding cylinder enclose a centrifugal channel, at least one of the outer walls of the volute housing and the outer walls of the feeding cylinder having a protrusion, the protrusion forming an outward protrusion space near the side of the centrifugal channel, the outward protrusion space being connected to the centrifugal channel.

[0005] According to a cyclone separator provided by the present invention, the feeding cylinder includes a straight section and a conical section. The inlet of the straight section is connected to the outlet of the volute housing, and the outlet of the straight section is connected to the inlet of the conical section. When the outer wall of the feeding cylinder is provided with the protrusion, at least one of the straight section and the conical section is provided with the protrusion.

[0006] According to a cyclone separator provided by the present invention, the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section are all provided with the protrusion, and the protrusion is correspondingly provided on the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section.

[0007] According to a cyclone duct provided by the present invention, the length of the protrusions provided on the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section is equal to the length of the outer wall at the location of the protrusion.

[0008] According to the present invention, a plurality of the protrusions are evenly distributed along the circumference of the outer cylinder.

[0009] According to a cyclone separator provided by the present invention, the horizontal cross-sectional shape of the protrusion is triangular, the protrusion is a bent component, and the protrusion is bent to form an outwardly convex space facing the centrifugal channel. The protrusion includes a first plate and a second plate, the first plate and the second plate being connected at a predetermined angle, and the outwardly convex space being formed between the first plate and the second plate. The predetermined angle is 30° to 50°, and the vertical distance from the vertex of the outwardly convex space to the side of the centrifugal channel facing it is 150 to 300 mm.

[0010] According to a cyclone duct provided by the present invention, the horizontal cross-sectional shape of the protrusion is semi-circular, the protrusion is a semi-circular arc surface, the protrusion forms the outward convex space facing the centrifugal channel, and the radius of the horizontal cross-section of the semi-circular part is 150-300mm.

[0011] According to a cyclone duct provided by the present invention, the horizontal cross-sectional shape of the protrusion is rectangular, the protrusion is a rectangular body, the protrusion forms the outward protruding space facing the centrifugal channel, the long side of the rectangular horizontal cross-sectional structure parallel to the outer wall of the outer cylinder is 300-600mm, and the short side perpendicular to the outer wall of the outer cylinder is 150-300mm.

[0012] According to the present invention, the volute casing has a multi-centered, gradually expanding structure.

[0013] According to a cyclone separator provided by the present invention, the cyclone separator further includes an inner cylinder body, which is disposed inside the volute housing, with one end of the inner cylinder body located outside the volute housing and the other end located inside the feed cylinder.

[0014] The cyclone separator provided by this invention comprises an upper volute casing and a lower feed cylinder. The volute casing has an inlet and an outlet, and the feed cylinder has an inlet and a discharge port. The outlet of the volute casing is connected to the inlet of the feed cylinder, which is also the inlet of the outer cylinder, and the discharge port of the feed cylinder is also the discharge port of the outer cylinder. At least one of the volute casing and the feed cylinder forms a protrusion, which communicates with the volute casing and the feed cylinder to form a centrifugal channel. The protrusion forms an outwardly protruding space communicating with the centrifugal channel on the side facing the centrifugal channel.

[0015] The airflow carrying dust enters the volute casing through the inlet. During centrifugal rotation within the centrifugal channel, some large-diameter dust particles are thrown into the protruding spaces by centrifugal force, impacting the surface of the protrusions. These particles then descend along the inner side of the protrusions or accumulate and overflow, flowing down the wall of the protrusion. Finally, they exit the outer cylinder through the discharge port of the feed cylinder, thus being separated and improving the dust separation efficiency of the cyclone separator. When the airflow in the centrifugal channel flows into the protruding spaces under centrifugal force, some of the outer edge airflow is thrown into these spaces, causing a decrease in airflow velocity. This frequent, intermittent deceleration during the swirling motion within the outer cylinder reduces the cyclone separator's resistance loss. Therefore, this invention improves separation efficiency and reduces resistance loss, thereby enhancing the overall system performance.

[0016] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be learned through the practice of the present invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the cyclone tube provided by the present invention;

[0019] Figure 2 This is a top view of the cyclone cylinder provided by the present invention;

[0020] Figure 3 This is a schematic diagram of the protruding part of the cyclone cylinder provided by the present invention;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the protruding part of the cyclone cylinder provided by the present invention.

[0022] Figure label:

[0023] 100. Outer cylinder; 110. Volute casing; 111. Inlet pipe; 120. Feed cylinder; 121. Straight section; 122. Conical section; 130. Centrifugal passage;

[0024] 200, Protrusion; 210, Outwardly protruding space; 220, First plate; 230, Second plate; 240, First protrusion; 250, Second protrusion; 260, Third protrusion;

[0025] 300. Inner cylinder; 310. Outlet pipe. Detailed Implementation

[0026] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] Furthermore, in the description of the embodiments of the present invention, unless otherwise stated, "multiple", "multiple roots", and "multiple groups" mean two or more, and "several", "several roots", and "several groups" mean one or more.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] like Figure 1 As shown, the cyclone duct provided in this embodiment of the invention includes an outer cylinder 100, which includes a volute housing 110 and a feeding cylinder 120. The outlet of the volute housing 110 is connected to the inlet of the feeding cylinder 120, so that the volute housing 110 and the feeding cylinder 120 form a centrifugal channel 130. At least one of the outer walls of the volute housing 110 and the outer walls of the feeding cylinder 120 is provided with a protrusion 200. The protrusion 200 forms an outward protrusion space 210 on the side near the centrifugal channel 130, and the outward protrusion space 210 is connected to the centrifugal channel 130.

[0033] The cyclone separator provided in this embodiment of the invention comprises an outer cylinder 100 consisting of an upper volute housing 110 and a lower feed cylinder 120. The volute housing 110 has an inlet and an outlet, and the feed cylinder 120 has an inlet and a discharge port. The outlet of the volute housing 110 is connected to the inlet of the feed cylinder 120, which is also the inlet of the outer cylinder 100, and the discharge port of the feed cylinder 120 is also the discharge port of the outer cylinder 100. At least one of the volute housing 110 and the feed cylinder 120 forms a protrusion 200, which communicates with the volute housing 110 and the feed cylinder 120 to form a centrifugal channel 130. The protrusion 200 forms an outwardly protruding space 210 communicating with the centrifugal channel 130 on the side facing the centrifugal channel 130.

[0034] The airflow carrying dust enters the volute 110 through the inlet. During centrifugal rotation within the centrifugal channel 130, some large-diameter dust particles are thrown into the protruding spaces 210 by centrifugal force, impacting the surface of the protrusions 200. These particles then descend along the inner side of the protrusions 200 or accumulate and overflow, descending along the wall of the protrusion 200. Finally, they flow out of the outer cylinder 100 through the outlet of the feed cylinder 120, thus being separated, improving the dust separation efficiency of the cyclone separator. When the airflow in the centrifugal channel 130 flows into the protruding spaces 210 under centrifugal force, some of the outer edge airflow is thrown into the spaces, causing a decrease in airflow velocity. This frequent intermittent deceleration during the swirling motion of the airflow within the outer cylinder 100 reduces the cyclone separator's resistance loss. Therefore, this invention improves separation efficiency and reduces resistance loss, thereby enhancing the overall system performance.

[0035] In this embodiment, the cyclone can be applied to a cement preheater system.

[0036] According to one embodiment of the present invention, the feed cylinder 120 includes a straight section 121 and a conical section 122. The inlet of the straight section 121 is connected to the outlet of the volute housing 110, and the outlet of the straight section 121 is connected to the inlet of the conical section 122. When the outer wall of the feed cylinder 120 is provided with a protrusion 200, at least one of the straight section 121 and the conical section 122 is provided with a protrusion 200.

[0037] In this embodiment, the feeding cylinder 120 is composed of a straight cylindrical section 121 and a conical section 122. The straight cylindrical section 121 is a cylindrical section with equal radii at the top and bottom, while the conical section 122 is a cylindrical section with a gradually decreasing radius from top to bottom. That is, the outer cylinder as a whole consists of a volute housing 110, a straight cylindrical section 121, and a conical section 122 connected sequentially from top to bottom. The outlet of the conical section 122 is the discharge port of the outer cylinder 100. The protrusion 200 can be provided on any one of the volute housing 110, the straight cylindrical section 121, and the conical section 122, or two, or all three. Correspondingly, the dust separation effect and the effect of reducing resistance loss gradually increase.

[0038] According to one embodiment of the present invention, protrusions 200 are provided on the outer walls of the volute housing 110, the straight section 121, and the conical section 122. The protrusions 200 are correspondingly provided on the outer walls of the volute housing 110, the straight section 121, and the conical section 122. In this embodiment, protrusions 200 are provided on the volute housing 110, the straight section 121, and the conical section 122, and the positions of the protrusions 200 on the volute housing 110, the straight section 121, and the conical section 122 correspond to each other.

[0039] In this embodiment, the protrusion 200 on the volute 110 is defined as the first protrusion 240, the protrusion 200 on the straight section 121 is defined as the second protrusion 250, and the protrusion 200 on the conical section 122 is defined as the third protrusion 260. The first protrusion 240, the second protrusion 250 and the third protrusion 260 are aligned, which is beneficial for the airflow to come into contact with the protrusion 200 multiple times during the centrifugation process in the centrifugal channel 130 and to be subjected to the action of the outer protrusion space 210 multiple times, thereby improving the separation effect and reducing the resistance effect.

[0040] In other embodiments, the first protrusion 240, the second protrusion 250 and the third protrusion 260 may not be aligned, but may be staggered and spaced apart.

[0041] like Figure 3 As shown, according to an embodiment of the present invention, protrusions 200 are correspondingly provided on the outer wall of the volute 110, the outer wall of the straight section 121, and the outer wall of the conical section 122, with the length of each protrusion equal to the length of the outer wall at its location. In this embodiment, the first protrusion 240, the second protrusion 250, and the third protrusion 260 are sequentially connected to form an integral protrusion 200, that is, the protrusion 200 extends in the height direction of the outer cylinder 100, and the overall length of the outer protrusion space 210 is adapted to the length of the side wall position of the outer cylinder 100. The structure of connecting the protrusions 200 into an integral structure from top to bottom ensures that the airflow passes through the outer protrusion space 210 throughout the centrifugal process, maximizing the separation effect and reducing the resistance effect.

[0042] According to one embodiment of the present invention, a plurality of protrusions 200 are evenly distributed along the circumference of the outer cylinder 100. In this embodiment, a plurality of protrusions 200 are provided on the outer wall of the outer cylinder 100, and each protrusion 200 is an integral protrusion 200 formed by sequentially connecting a first protrusion 240, a second protrusion 250 and a third protrusion 260. Such a plurality of protrusions 200 are evenly distributed along the 360° circumference of the outer cylinder 100.

[0043] In one embodiment, the number of protrusions 200 can be 3 to 12. In other embodiments, the protrusions 200 on the outer wall of the volute housing 110, the outer wall of the straight section 121, and the outer wall of the conical section 122 may not be connected as a whole, as long as the multiple protrusions 200 on the volute housing 110, the straight section 121, and the conical section 122 are evenly distributed.

[0044] In the following embodiments, the shape of the horizontal cross-section of the convex space 210 can be triangular, square, or semi-circular.

[0045] According to one embodiment of the present invention, the horizontal cross-sectional shape of the protrusion 200 is triangular, and the protrusion 200 is a bent part, which is bent to form an outwardly protruding space 210 facing the centrifugal channel 130. In this embodiment, the protrusion 200 is a bent structure, and in this embodiment, the protrusion 200 is a strip extending along the height direction of the outer cylinder 100. In other embodiments, the protrusion 200 may also be distributed in a dotted pattern.

[0046] like Figure 3 and Figure 4 As shown, the protrusion 200 includes a first plate 220 and a second plate 230, which are connected at a predetermined angle α, forming an outwardly protruding space 210. In this embodiment, the horizontal cross-sectional shape of the outwardly protruding space 210 is triangular. The protrusion 200 is composed of two plates connected at a predetermined angle α. At the opening position forming the included angle, the sides of the first plate 220 and the second plate 230 are connected to the outer wall of the outer cylinder 100, and the outwardly protruding space 210 is formed at the middle position of the included angle. The structure of the first plate 220 and the second plate 230 is simple, and they are easy to process and manufacture on the outer wall of the volute 110 and the outer wall of the feed cylinder 120.

[0047] In other embodiments, the protrusion 200 may also be an integral structure, that is, the first plate 220 and the second plate 230 are formed by bending a single sheet of material at a set angle α. When the protrusion 200 is semi-circular, it may be formed by bending a single sheet of material into a semi-circular arc shape.

[0048] The set angle α is 30° to 50°, and the vertical distance H from the vertex of the convex space 210 to the side of the centrifugal channel 130 is 150 to 300 mm. In this embodiment, the vertex angle of the triangular cross-section structure is the set angle α formed by the connection of the first plate 220 and the second plate 230 constituting the convex space 210, which is 30° to 50°, and the height line of the triangle is the vertical distance H from the vertex point of the convex space 210 to the outer wall of the outer cylinder 100, which is 150 to 300 mm.

[0049] According to one embodiment of the present invention, the horizontal cross-sectional shape of the protrusion 200 is semi-circular, the protrusion 200 is a semi-circular arc surface, and the protrusion 200 forms an outwardly protruding space 210 facing the centrifugal channel 130. The radius of the horizontal cross-section of the semi-circular part is 150-300 mm. In this embodiment, the radius of the semi-circular cross-section structure is 150-300 mm, and the straight edge of the semi-circle is connected parallel to the outer wall of the outer cylinder 100.

[0050] According to one embodiment of the present invention, the horizontal cross-sectional shape of the protrusion 200 is rectangular, the protrusion 200 is a rectangular body, the protrusion 200 forms an outwardly protruding space 210 facing the centrifugal channel 130, the long side dimension of the rectangular horizontal cross-sectional structure parallel to the outer wall of the outer cylinder 100 is 300-600mm, and the short side dimension perpendicular to the outer wall of the outer cylinder 100 is 150-300mm.

[0051] In this embodiment, the long side of the square cross-section structure parallel to the outer wall of the outer cylinder 100 is 300-600mm, and the short side perpendicular to the outer wall of the outer cylinder 100 is 150-300mm.

[0052] like Figure 2 As shown, according to an embodiment of the present invention, the volute housing 110 has a multi-centered, gradually expanding structure. In this embodiment, an inlet pipe 111 of a cyclone is provided at the feed inlet of the volute housing 110. The inlet pipe 111 is a pipe structure with a trapezoidal or other cross-sectional shape, and the volute housing 110 has a multi-centered, gradually expanding volute structure.

[0053] According to one embodiment of the present invention, the cyclone further includes an inner cylinder 300, which is disposed inside the volute housing 110. One end of the inner cylinder 300 is located outside the volute housing 110, and the other end is located inside the feed cylinder 120. In this embodiment, the cyclone consists of an inner cylinder 300 and an outer cylinder 100. The inner cylinder 300 extends from the outside into the outer cylinder 100. The upper edge of the entire inner cylinder 300 is connected to the upper wall of the volute housing 110, and the inner cylinder 300 extends outward to form the outlet pipe 310 of the cyclone.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cyclone separator, characterized in that: The system includes an outer cylinder, which comprises a volute casing and a feeding cylinder. The outlet of the volute casing is connected to the inlet of the feeding cylinder, thereby forming a centrifugal channel between the volute casing and the feeding cylinder. At least one of the outer walls of the volute casing and the feeding cylinder has a protrusion. The protrusion forms an outwardly protruding space near the side of the centrifugal channel, and the outwardly protruding space is connected to the centrifugal channel. The feeding cylinder includes a straight section and a conical section. The inlet of the straight section is connected to the outlet of the volute casing, and the outlet of the straight section is connected to the inlet of the conical section. With the protrusion on the outer wall of the feeding cylinder, the... At least one of the straight section and the conical section is provided with the protrusion; the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section are all provided with the protrusion, and the protrusion is correspondingly provided on the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section; the length of the protrusion correspondingly provided on the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section is equal to the length of the outer wall at its location; the protrusions correspondingly provided on the outer wall of the volute housing, the outer wall of the straight section, and the outer wall of the conical section are sequentially connected, and the protrusion extends in the height direction of the outer cylinder.

2. The cyclone separator according to claim 1, characterized in that: The multiple protrusions are evenly distributed along the circumference of the outer cylinder.

3. The cyclone separator according to claim 1 or 2, characterized in that: The horizontal cross-sectional shape of the protrusion is triangular. The protrusion is a bent part. The protrusion is bent to form the outward convex space facing the centrifugal channel. The protrusion includes a first plate and a second plate. The first plate and the second plate are connected at a set angle. The first plate and the second plate form the outward convex space. The set angle is 30°~50°. The vertical distance from the vertex of the outward convex space to the side of the centrifugal channel is 150~300mm.

4. The cyclone separator according to claim 1 or 2, characterized in that: The horizontal cross-sectional shape of the protrusion is semi-circular, the protrusion is a semi-circular arc surface, the protrusion forms the outward convex space facing the centrifugal channel, and the radius of the horizontal cross-section of the semi-circle is 150-300mm.

5. The cyclone separator according to claim 1 or 2, characterized in that: The horizontal cross-sectional shape of the protrusion is rectangular, the protrusion is a rectangular body, the protrusion forms the outward protruding space facing the centrifugal channel, the long side of the rectangular horizontal cross-section structure parallel to the outer wall of the outer cylinder is 300-600mm, and the short side perpendicular to the outer wall of the outer cylinder is 150-300mm.

6. The cyclone separator according to claim 1 or 2, characterized in that: The volute shell has a multi-centered, gradually expanding structure.

7. The cyclone separator according to claim 1 or 2, characterized in that: The cyclone also includes an inner cylinder, which is inserted inside the volute housing. One end of the inner cylinder is located outside the volute housing, and the other end is located inside the feed cylinder.

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