Flow guide bushing for hopper and hopper for solid-liquid mixing unit

Abstract

The present application discloses a diversion bushing for a hopper, comprising: a support section having an annular shape; a step section having an annular shape and engaging on an outer edge of the support section; and a shield ring having a cylindrical shape and extending downward from the inner edge of the support section perpendicular to the lower surface of the support section. The utility model further discloses a hopper for the solid-liquid mixing unit, and the hopper comprises a first flange plate and a second flange plate, the flow guide bushing is supported on the upper edge of the inner circumference of the first flange plate through a step section; the second flange plate is in an annular shape and is parallel to the first flange plate; the hopper body extends downwards from the lower edge of the inner circumference of the first flange plate to the upper edge of the inner circumference of the second flange plate; and the liquid spraying ring is arranged on the inner wall of the hopper body.

Description

Technical Field

[0001] The present application relates to a flow guide bushing, in particular to a flow guide bushing for a hopper of a solid-liquid mixing unit. The present application also relates to a hopper comprising the flow guide bushing. Background Art

[0002] In existing production devices, solid-liquid mixing units are often used to homogenize and mix liquid raw materials with solid raw materials in a mixing chamber. To ensure the uniformity and stability of subsequent reactions, liquid raw materials usually need to be heated to a specific temperature before mixing. However, during the feeding process, solid raw materials (usually powders or particles) are easily affected by the high-temperature liquid raw material vapor and adhere to the inner wall of the hopper of the solid-liquid mixing unit. To solve this problem, the prior art uses a liquid spray ring to spray liquid toward the inner wall of the hopper to flush the powder adhering to the inner wall of the hopper into the mixing chamber.

[0003] However, there is a groove between the inner wall of the hopper and the spray ring fixed in the hopper, so the powdered solid raw materials tend to accumulate in the groove. As the solid raw materials are continuously added, the powder accumulated in the groove gradually increases, which may eventually cause the solid raw materials to agglomerate in the groove. Under the influence of the continuous input of solid raw materials, the agglomerates in the groove will gradually become larger, and eventually the feed pipe connected to the hopper will be blocked. Although the feed pipe can be unblocked using a special tool, the tool cannot reach into the groove to completely clean the agglomerated solid raw materials, so the problem of feed pipe blockage will still occur repeatedly. Utility Model Content

[0004] The purpose of the present application is to solve the problem of dead corners between the liquid spray ring of the solid-liquid mixing unit and the inner wall of the hopper. Another purpose of the present application is to solve the problem of frequent blockages caused by the difficulty in completely cleaning the agglomerated solid raw materials, thereby reducing production efficiency.

[0005] In order to solve the above-mentioned technical problems, the present application provides a guide bushing for a hopper, characterized in that it includes: a support section having an annular shape; a step section having an annular shape and being joined to the outer edge of the support section; and a shielding ring having a cylindrical shape and extending downward from the inner edge of the support section perpendicular to the lower surface of the support section.

[0006] According to an optional embodiment, the inner diameter of the step section corresponds to the outer diameter of the support section; and the thickness of the step section is smaller than the thickness of the support section.

[0007] According to an alternative embodiment, the step section is flush with the upper surface of the support section at the upper surface.

[0008] According to an alternative embodiment, the shielding ring has a rounded configuration at the connection to the supporting section.

[0009] According to an optional embodiment, the step section, the supporting section and the shielding ring are connected together or made in an integral molding manner.

[0010] According to an optional embodiment, the guide bushing includes an auxiliary support section;

[0011] One end of the auxiliary supporting section is connected to the supporting section, and the other end is obliquely extended at an angle to the supporting section and abuts against the hopper to provide supporting force to the supporting section.

[0012] The present application also provides a hopper for a solid-liquid mixing unit, characterized in that it includes: a first flange having an annular shape; a guide bushing supported on the upper edge of the inner circumference of the first flange through a step section; a second flange having an annular shape and parallel to the first flange; a hopper body extending downward from the lower edge of the inner circumference of the first flange to the upper edge of the inner circumference of the second flange; and a liquid spray ring arranged on the inner wall of the hopper body; wherein the liquid spray ring is a hollow annular pipe and includes a plurality of holes arranged on the pipe wall.

[0013] According to an optional embodiment, the first flange includes a plurality of first fixing holes arranged along the circumferential direction; the second flange includes a plurality of second fixing holes arranged along the circumferential direction; and the diameter of the top of the hopper body is greater than the diameter of the bottom of the hopper body.

[0014] According to an optional embodiment, the size of the guide bushing is set so that the outer diameter of its shielding ring is smaller than the inner diameter of the spray ring, and the height of its shielding ring is greater than the distance between the top of the spray ring and the top surface of the first flange, preferably greater than the distance between the bottom of the spray ring and the top surface of the first flange.

[0015] According to an optional embodiment, the hopper includes a gasket; the gasket is arranged on the upper surface of the first flange; the thickness of the gasket is greater than the thickness of the step section.

[0016] The shielding ring of the guide bushing according to the present application can shield the space between the top of the liquid spraying ring and the inner wall of the hopper body, so that the solid raw materials are restricted to pass through the shielding ring and cannot enter or accumulate in the space between the top of the liquid spraying ring and the inner wall of the hopper body. In this way, the problem of easy formation of accumulation dead corners between the liquid spraying ring of the solid-liquid mixing unit and the inner wall of the hopper and the problem of difficulty in completely cleaning the agglomerated solid raw materials are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other aspects of the present application will be more fully understood from the detailed description below in conjunction with the following drawings. It should be noted that the scales of the drawings may be different for the purpose of clear description, but this will not affect the understanding of the present application.

[0018] Figure 1 is a cross-sectional view of a flow guide bushing according to a first embodiment of the present application.

[0019] Figure 2 It is a cross-sectional view of the hopper according to the first embodiment of the present application.

[0020] Figure 3 yes Figure 2 A partial enlarged cross-sectional view of the hopper.

[0021] Figure 4 It is a partially enlarged cross-sectional view of a hopper according to a second embodiment of the present application. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0026] It should be noted that the terms "installed", "connected" and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0027] Figure 1 It is a cross-sectional view of a guide bushing according to the first embodiment of the present application. The guide bushing 1 includes a step section 12, a support section 11 and a shielding ring 13. The support section 11 has an annular shape. The step section 12 has an annular shape and is joined to the outer edge of the support section 11, that is, the inner diameter of the step section 12 corresponds to the outer diameter of the support section 11. The thickness of the step section 12 is less than the thickness of the support section 11. The step section 12 can be flush with the upper surface of the support section 11 at the upper surface. The shielding ring 13 is cylindrical and extends downward from the inner edge of the support section 11 perpendicular to the lower surface of the support section 11. The shielding ring 13 has a rounded corner structure at the connection portion with the support section 11. The step section 12, the support section 11 and the shielding ring 13 can be connected together by bonding or the like, or can be made by integral molding.

[0028] Figure 2 It is a cross-sectional view of the hopper according to the first embodiment of the present application. Figure 3 yes Figure 2 A partial enlarged cross-sectional view of a hopper. The hopper 2 includes a guide bushing 1, a first flange 3, a second flange 4, a hopper body 5 and a liquid spray ring 6. The first flange 3 is an annular plate, and a plurality of first fixing holes 30 are arranged on the inner side of the outer periphery. Similarly, the second flange 4 is an annular plate, parallel to the first flange 3, and a plurality of second fixing holes 40 are arranged on the inner side of the outer periphery. The hopper body 5 extends downward from the lower edge of the inner periphery of the first flange 3 to the upper edge of the inner periphery of the second flange 4. In order to better guide the solid raw materials, the hopper body 5 can be tapered, that is, the diameter of the top of the hopper body 5 is larger than the diameter of the bottom of the hopper body 5. In this way, the solid raw materials will be more concentrated after passing through the hopper body 5 and will not be easily dispersed.

[0029] The guide bushing 1 is supported on the upper edge of the inner periphery of the first flange 3 through the step section 12. The liquid spray ring 6 is arranged on the inner wall of the hopper body 5. The liquid spray ring 6 can be a hollow annular pipe, and a plurality of holes are arranged on the pipe wall to spray the liquid therein onto the inner wall of the hopper body 5, and flush the solid raw materials attached to the inner wall of the hopper body 5 into the mixing chamber. The size of the guide bushing 1 is set so that the outer diameter of its shielding ring 13 is smaller than the inner diameter of the liquid spray ring 6, and the height of its shielding ring 13 is greater than the distance between the top of the liquid spray ring 6 and the top surface of the first flange 3, preferably greater than the distance between the bottom of the liquid spray ring 6 and the top surface of the first flange 3. In this way, the shielding ring 13 can block the space between the top of the liquid spray ring 6 and the inner wall of the hopper body 5, so that the solid raw materials are restricted to pass through the inside of the shielding ring 13, and cannot enter or accumulate in the space between the top of the liquid spray ring 6 and the inner wall of the hopper body 5.

[0030] The hopper 2 may further include a gasket 7. The gasket 7 is disposed on the upper surface of the first flange 3 to provide a buffer when the hopper 2 is connected to the feeding pipe 8. Specifically, the feeding pipe 8 is provided with a third flange 9 at its end. The thickness of the gasket 7 is greater than the thickness of the step section 12 to generate a gap between the first flange 3 and the third flange 9 when the first flange 3 of the hopper 2 is connected to the third flange 9 of the feeding pipe 8, thereby preventing the feeding pipe 8 from squeezing the step section 12. The gasket 7 may also form a seal between the first flange 3 and the third flange 9 to prevent external impurities from entering the hopper 2 and prevent solid raw materials from escaping from the feeding pipe 8. The gasket 7 may also be disposed on the lower surface of the second flange 4 to form a seal between the second flange 4 and the mixing chamber when the second flange 4 of the hopper 2 is connected to the mixing chamber (not shown), thereby preventing external impurities from entering the mixing chamber and preventing solid raw materials from hopper 2 from escaping.

[0031] In order to facilitate cleaning of the guide bushing 1 during production, the inner diameter of the shielding ring 13 of the guide bushing 1 is set to be substantially equal to the inner diameter of the feed pipe 8. In this way, when the inner wall of the feed pipe 8 is cleaned by means of a tool (such as a piston-type scraping tool), the guide bushing 1 can be cleaned at the same time.

[0032] Figure 4 1 is a partial enlarged cross-sectional view of a hopper according to a second embodiment of the present application. Compared with the first embodiment, in the second embodiment, the guide bushing 1 further includes an auxiliary support section 14. One end of the auxiliary support section 14 is connected to the support section 11, and the other end abuts against the inner wall of the hopper body 5 to provide additional support force to the support section 11, so that the support section 11 will not bend due to the weight of the shielding ring 13.

[0033] The foregoing description of the embodiments has been provided for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the embodiments to the described variants. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to best illustrate the principles and practical applications, so that those skilled in the art can understand the embodiments in their various embodiments and various modifications suitable for their intended use. Within the framework of the embodiments, the above-mentioned components and features can be combined between different embodiments.

Claims

1. A guide bushing (1) for a hopper, characterized in that: include: a supporting section (11) having an annular shape; a step section (12) having an annular shape and joined to the outer edge of the support section (11); and The shielding ring (13) has a cylindrical shape and extends downward from the inner edge of the supporting section (11) perpendicularly to the lower surface of the supporting section (11).

2. The guide bushing (1) according to claim 1, characterized in that: The inner diameter of the step section (12) corresponds to the outer diameter of the support section (11); The thickness of the step section (12) is smaller than the thickness of the support section (11).

3. The guide bushing (1) according to claim 1, characterized in that: The step section (12) is flush with the upper surface of the support section (11) at the upper surface.

4. The guide bushing (1) according to claim 1, characterized in that: The shielding ring (13) has a rounded corner structure at the connection portion with the supporting section (11).

5. The guide bushing (1) according to claim 1, characterized in that: The step section (12), the support section (11) and the shielding ring (13) are connected together or made in an integrally formed manner.

6. The guide bushing (1) according to claim 1, characterized in that: The guide bushing (1) comprises an auxiliary support section (14); One end of the auxiliary support section (14) is connected to the support section (11), and the other end is obliquely extended at an angle to the support section (11) and abuts against the hopper to provide support force to the support section (11).

7. A hopper (2) for a solid-liquid mixing unit, characterized in that: include: A first flange (3) having an annular shape; The guide bushing (1) according to any one of claims 1 to 6, which is supported on the upper edge of the inner circumference of the first flange (3) by means of a step section (12); A second flange (4) having an annular shape and parallel to the first flange (3); A hopper body (5) extending downward from the lower edge of the inner periphery of the first flange (3) to the upper edge of the inner periphery of the second flange (4); and A liquid spray ring (6) is arranged on the inner wall of the hopper body (5); The liquid spray ring (6) is a hollow annular pipe and includes a plurality of holes arranged on the pipe wall.

8. The hopper (2) according to claim 7, characterized in that The first flange (3) comprises a plurality of first fixing holes (30) arranged along the circumferential direction; The second flange (4) comprises a plurality of second fixing holes (40) arranged along the circumferential direction; The diameter of the top of the hopper body (5) is greater than the diameter of the bottom of the hopper body (5).

9. The hopper (2) according to claim 7, characterized in that: The size of the guide bushing (1) is set so that the outer diameter of its shielding ring (13) is smaller than the inner diameter of the liquid spraying ring (6), and the height of its shielding ring (13) is greater than the distance between the top of the liquid spraying ring (6) and the top surface of the first flange (3).

10. The hopper (2) according to claim 9, characterized in that The height of the shielding ring (13) of the guide bushing (1) is greater than the distance between the bottom of the liquid spray ring (6) and the top surface of the first flange (3).

11. The hopper (2) according to claim 7, characterized in that The hopper (2) includes a gasket (7); The gasket (7) is arranged on the upper surface of the first flange (3); The thickness of the gasket (7) is greater than the thickness of the step section (12).

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