Spiral Baffle System

Abstract

The present invention relates to a spiral baffle system that allows the pitch of spiral baffles installed at intervals along the longitudinal direction within a housing of a heating furnace to be adjusted during the mixing and heating process of materials to be treated that are fed into and transported within the housing of a heating furnace.

Description

[Technical field]

[0001] The present invention claims the benefit of the filing date of Korean Patent Application No. 10-2022-0146755, filed with the Korean Intellectual Property Office on November 7, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a spiral baffle system for a heating furnace, which is capable of adjusting the pitch of spiral baffles installed at intervals along the longitudinal direction inside a housing during a mixing and heating process of powder fed and transported inside the housing of the heating furnace. [Background technology]

[0003] Generally, a rotary kiln (hereinafter referred to as a "heating furnace"), which is a type of heating furnace, is a rotating kiln with a cylindrical horizontal frame, in which powder (hereinafter referred to as the "material to be treated") is mixed, heated, and transported by rotating an inclined cylinder.

[0004] Specifically, referring to FIG. 1, the heating furnace is formed in a cylindrical shape with an inlet 11 on one side of a housing 10 and an outlet 13 on the other side, and the other side of the housing 10 is arranged horizontally with the housing 10 inclined downward at a predetermined angle.

[0005] The housing 10 rotates at a predetermined speed by the power of a motor, and the material to be treated that is fed through an inlet 11 on one side is transported along the longitudinal direction that is inclined downward by the rotation of the housing 10. The transported material to be treated is heated by a heat source inside or outside the housing 10, and then discharged to the outside through a discharge outlet 13 on the other side of the housing 10.

[0006] In this case, spiral baffles 20 are arranged at regular intervals on the inner circumferential surface of the housing 10 along the longitudinal direction of the housing 10. Such spiral baffles 20 allow the objects to be treated to be first-in, first-out in the housing 10 and maintain an appropriate height for the objects to be treated.

[0007] However, the conventional spiral baffle 20 applied in the heating furnace has a longitudinal pitch of the housing 10 welded and fixed via a plurality of fixing brackets 21. As a result, when the residence time of the object to be treated in the housing 10 is changed, the rotation speed of the housing 10 to reach the target residence time exceeds the usable range of the motor. When the pitch of the spiral baffle 20 needs to be changed to solve this problem, the welded portion of the fixing bracket 21 needs to be removed one by one, which can take a lot of time and cost. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to solve the above problems, and aims to provide a spiral baffle system that makes it possible to adjust the pitch of spiral baffles installed at intervals along the longitudinal direction within a housing of a heating furnace during the mixing and heating process of materials to be treated that are fed into and transported within the housing of the heating furnace. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the spiral baffle system for a heating furnace according to the present invention may include a spiral baffle that is connected to the inner surface of a housing of a hollow cylindrical heating furnace via a fixed bracket so as to mix and transport the materials to be treated that are fed into the furnace, and a spacer that is detachably interposed between the connecting surfaces of the fixed bracket and the spiral baffle, has a predetermined thickness, and adjusts the pitch of the spiral baffle.

[0010] In this case, a plurality of spiral baffles are provided at predetermined intervals along the longitudinal direction of the housing.

[0011] Also, there may be a plurality of spacers, each having a different thickness.

[0012] Also, at least one spacer corresponding to a pitch set on the spiral baffle is selectively coupled to the plurality of spacers.

[0013] A spacer is also circumferentially coupled to one end of the spiral baffle.

[0014] The spacer may include a first body interposed between the fixing bracket and the spiral baffle, and having a first insertion hole formed therein that communicates with the fastening hole of the fixing bracket, and a second body disposed on the opposite side of the first body across the spiral baffle, and having a second insertion hole formed therein that communicates with the first insertion hole of the first body.

[0015] In addition, the opposing surfaces of the first body and the second body which come into surface contact with the spiral baffle are formed into inclined surfaces which correspond to the installation angle of the spiral baffle.

[0016] In addition, a contact member of a predetermined thickness made of a soft synthetic resin material can be interposed between the opposing surfaces of the first body and the second body which come into surface contact with the spiral baffle.

[0017] The fixing bracket may further include a fastener that is sequentially fastened to the spiral baffle and the spacer through the fastening hole of the fixing bracket to fix the position of the spiral baffle. Effect of the Invention

[0018] The spiral baffle system for a heating furnace according to the present invention, configured as described above, can easily adjust the pitch of the spiral baffles installed at intervals along the longitudinal direction within the housing during the mixing and heating process of materials to be treated that are fed into and transported within the housing that constitutes the heating furnace.

[0019] In particular, when conditions change, such as when the residence time of the material to be treated within the housing is altered, adjusting the pitch of the helical baffle allows the material to reach the target residence time. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a side view showing the configuration of a conventional heating furnace. [Diagram 2] 1 shows a partial cutaway perspective view of a furnace equipped with a spiral baffle system according to the present invention; [Diagram 3] FIG. 1 shows a perspective view of a spiral baffle according to the present invention. [Figure 4] FIG. 1 illustrates an exploded perspective view of a spiral baffle system according to the present invention. [Diagram 5] FIG. 2 shows a side cross-sectional view of a spiral baffle system according to the present invention; [Figure 6] 1 shows an exploded perspective view of a spacer according to the present invention; [Figure 7] 1(a) to 1(c) show phase diagrams in which the spacer according to the present invention is formed to various thicknesses. [Figure 8] 1(a) and (b) are side views showing a spiral baffle according to the present invention set to different pitches. [Figure 9] FIG. 2 shows a cross-sectional side view of a spiral baffle system according to the present invention with a seal added. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration and operation of specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] Here, when assigning reference symbols to components in each drawing, it should be noted that identical components are represented by the same symbols as much as possible, even if they are shown in different drawings.

[0023] FIG. 2 is a partial cutaway perspective view of a furnace equipped with a spiral baffle system according to the present invention, and FIG. 3 is a perspective view of a spiral baffle according to the present invention.

[0024] Referring to FIG. 2, the present invention relates to a spiral baffle system 100 installed in a housing 10 of a heating furnace 1 that performs mixing and heating processes on materials to be treated that are fed and transported, and such a spiral baffle system 100 may include a spiral baffle 110 and a spacer 120.

[0025] For example, the housing 10 is formed in a hollow cylindrical shape. At the same time, the housing 10 is provided so as to be inclined downward at a predetermined angle toward the discharge port 13 so that the material to be treated that is fed through the feed port 11 on one side can be easily discharged through the discharge port 13 on the other side.

[0026] The configuration of the present invention will be specifically described as follows.

[0027] First, the spiral baffle 110 is fixed to the inner circumferential surface of the housing 10 constituting the heating furnace 1 via fixing brackets 15 arranged radially based on the central axis, and a plurality of such spiral baffles 110 are provided along the longitudinal direction of the housing 10 at a predetermined distance apart.

[0028] Specifically, referring to FIG. 3, the spiral baffle 110 is formed in a ring shape with at least one side open, and both open ends of the spiral baffle 110 are spaced apart at a predetermined pitch P along the longitudinal direction of the housing 10, so that the body of the spiral baffle 110 is formed in a spiral shape.

[0029] The spiral baffle 110 configured in this manner is detachably coupled to a plurality of radially arranged fixing brackets 15 via fasteners 130 (see FIG. 2) described below.

[0030] In this case, the spiral baffle 110 has a corresponding through hole 111 formed on its periphery, the through hole 111 communicating with the fastening hole 15a of the fixing bracket 15 so that the fastener 130 can be fastened thereto.

[0031] Meanwhile, a plurality of guide blades 17 are provided on the inner peripheral surface of the housing 10 at a predetermined angle from the central axis. The guide blades 17 are arranged to cross each other along the longitudinal direction. This allows the objects M to be uniformly transported toward the discharge port 13 via the guide blades 17, and also prevents the transported objects M from being biased to one side.

[0032] 4, the spacer 120 can adjust the pitch P of the spiral baffle 110 to correspond to a changed residence time of the object M during the treatment process of the object M in the heating furnace 1. Such a spacer 120 can be detachably interposed between the joint surface of the fixed bracket 15 and the spiral baffle 110.

[0033] Furthermore, the spacer 120 is coupled to one end in the circumferential direction of the spiral baffle 110. That is, by coupling the spacer 120 to one end of the spiral baffle 110 that extends spirally, the pitch P of the spiral baffle 110 can be easily changed.

[0034] In this case, various materials such as heat-resistant synthetic resin, metal, etc. can be used as the material of the spacer 120. Therefore, in the present invention, the material of the spacer 120 is not particularly limited.

[0035] Specifically, referring to FIG. 5, the spacer 120 may include a first body 121 interposed between the fixing bracket 15 and the spiral baffle 110 and having a first insertion hole 121a formed therein that communicates with the fastening hole 15a of the fixing bracket 15, and a second body 123 disposed on the opposite side of the spiral baffle 110 from the first body 121 and having a second insertion hole 123a formed therein that communicates with the first insertion hole 121a of the first body 121.

[0036] 6, the opposing surfaces of the first body 121 and the second body 123 that come into surface contact with both sides of the spiral baffle 110 are formed as inclined surfaces corresponding to the installation angle of the spiral baffle 110.

[0037] A plurality of spacers 120 having different thicknesses are provided, and the spiral baffle 110 can be adjusted to a desired pitch P by selectively connecting at least one of the plurality of spacers 120 corresponding to the set pitch P of the spiral baffle 110.

[0038] 7, the spacer 120 is formed in a plurality of first bodies 121 and second bodies 123, each of which has a different thickness t. By selectively applying one of the plurality of first bodies 121 formed to different thicknesses t to the spiral baffle 110, the spiral baffle 110 can be adjusted to various pitches P1, P2 as shown in FIG.

[0039] In this case, the spacer 120 may have a first body 121 whose thickness t gradually increases along the spiral direction of the spiral baffle 110, thereby making it possible to easily adjust the pitch P of the spiral baffle 110.

[0040] Referring to FIG. 9, a seal 125 of a predetermined thickness can be interposed between the opposing surfaces of the first body 121 and the second body 123, which come into surface contact with the spiral baffle 110, to prevent the contact surfaces from lifting up.

[0041] In this case, the contact member 125 is formed to have a size corresponding to the first and second bodies 121 and 123. In addition, the contact member 125 is preferably made of a soft synthetic resin material so that it can be in close contact with the opposing surfaces of the first and second bodies 121 and 123.

[0042] Fastener 130 is used to fix spacer 120 interposed between fixed bracket 15 and spiral baffle 110, and fastener 130 is composed of bolt 131 and nut 133 as shown in the drawings, or a structure in which bolt 131 is screwed together without a separate nut 133 may be applied. In the present invention, the structure of fastener 130 is not particularly limited.

[0043] The fastener 130 is sequentially fastened to the spiral baffle 110, the first body 121, the spacer 120 and the second body 123 through the fastening holes 15a of the fixing bracket 15, thereby firmly fixing the position of the spiral baffle 110.

[0044] The spiral baffle system 100 for a heating furnace according to the present invention, configured as described above, can easily adjust the pitch P of the spiral baffles 110 installed at intervals along the longitudinal direction within the housing 10 during the mixing and heating process of the material to be treated M that is fed into and transported within the housing 10 that constitutes the heating furnace 1.

[0045] This allows the object M to reach a target residence time by adjusting the pitch P of the spiral baffle 110 when conditions change, such as when the residence time of the object M in the housing is changed.

[0046] Although the present invention has been illustrated and described with reference to specific embodiments, it is of course possible to change and modify the present invention in various ways without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0047] 1: Heating furnace, M: Processing object 10: Housing, 11: Inlet 13: Exhaust port, 15: Fixing bracket 15a: Fastening hole, 100: Spiral baffle system 110: Spiral baffle, P: Pitch 120: Spacer, 121: First body 121a: first insertion hole, 123: second body 123a: second insertion hole, 125: contact device 130: Fasteners

Claims

1. A spiral baffle is connected to an inner peripheral surface of a housing of a hollow cylindrical heating furnace via a fixing bracket so as to mix and transport the materials to be treated. a spacer removably interposed between a joining surface of the fixed bracket and the spiral baffle, the spacer having a predetermined thickness for adjusting the pitch of the spiral baffle.

2. The spiral baffle comprises:

2. The variable pitch spiral baffle system of claim 1, wherein a plurality of said baffles are provided at predetermined intervals along the length of said housing.

3. The spacer is 10. The variable pitch helical baffle system of claim 1, wherein there are a plurality of baffles and the baffles have different thicknesses.

4. The variable pitch spiral baffle system according to claim 3 , wherein at least one or more of the spacers corresponding to a pitch set on the spiral baffle are selectively coupled to the spacers.

5. The spacer is 2. The variable pitch helical baffle system of claim 1, wherein the helical baffle is circumferentially coupled to one end thereof.

6. The spacer is a first body interposed between the fixing bracket and the spiral baffle, the first body having a first insertion hole formed therein and communicating with a fastening hole of the fixing bracket; 2. The variable pitch spiral baffle system of claim 1, further comprising: a second body disposed on the opposite side of the spiral baffle from the first body, the second body having a second insertion hole formed therein that communicates with the first insertion hole of the first body.

7. The opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle are 7. The variable pitch helical baffle system of claim 6, wherein the helical baffle is formed on an inclined surface corresponding to an installation angle of the helical baffle.

8. Between the opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle, 8. The variable pitch spiral baffle system according to claim 7, further comprising a contact member having a predetermined thickness and made of a soft synthetic resin material.

9. 2. The variable pitch helical baffle system of claim 1, further comprising a fastener fastened to the helical baffle and spacer in sequence through a fastening hole of the fixing bracket to fix a position of the helical baffle.

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