Smoke exhaust pipeline

Abstract

The utility model provides a smoke exhaust pipeline which comprises a barrel body, a smoke exhaust pipe and a smoke exhaust pipe, the barrel body is vertically arranged, the top end and the bottom end of the barrel body are open, and the bottom end of the barrel body is used for being connected with a furnace body so as to exhaust smoke in the furnace body; the cock type bottom valve is arranged on the lower portion of the barrel and comprises an adjusting piece, the first end of the adjusting piece penetrates through the side wall of the barrel and horizontally stretches into the barrel, and the second end of the adjusting piece is arranged on the outer side of the barrel. The side wall of the valve body is connected with the first end of the adjusting piece, the valve body is located in the barrel and can rotate around the shaft, when the valve body is in the horizontal state, the barrel can be sealed at most, when the valve body is in the vertical state, the barrel can be sealed at least, the valve body can be rotated by rotating the adjusting piece, and the surface of the valve body is smooth. According to the smoke exhaust pipeline, impurity attachment can be reduced through the cock type bottom valve, the opening degree can be accurately adjusted, and the smoke exhaust pipeline is not prone to being clamped.

Description

Technical Field

[0001] The utility model relates to the field of kilns, and more particularly to a smoke exhaust pipe. Background Art

[0002] Kilns are widely used in sintering processes across various industries, such as ceramic production, metallurgy, coking, and new energy. Kilns of various structures and uses are emerging in an endless stream, and their development is rapid. The kiln sintering system can be divided into the heating system, transmission system, loading and unloading system, and atmosphere system. The atmosphere system mainly includes the intake and exhaust systems. By adjusting the intake and exhaust air volume and air pressure, the furnace atmosphere, pressure, and air exchange rate can be adjusted. The kiln consists of a furnace body and exhaust ducts. Intake air enters the furnace through the intake duct provided in the furnace body, while exhaust air is discharged through the exhaust duct.

[0003] Different materials have different component types and contents, and the volatile substances in them are also different. Some materials will precipitate a lot of dust impurities during high-temperature sintering. Commonly used exhaust pipes (such as Figure 1 (As shown) uses a plug-in type bottom valve. After the kiln has been in production and operation for a long time, impurities will adhere to and accumulate under the plug-in type bottom valve, forming stubborn lumps that are difficult to clean and will get stuck with the cylinder of the smoke exhaust pipe, affecting the adjustment of the plug-in type regulating valve. Utility Model Content

[0004] The utility model provides a new technical solution for a smoke exhaust pipe, which can at least solve the problem that the plug-in plate bottom valve of the smoke exhaust pipe in the prior art is prone to impurities accumulation and sticking.

[0005] According to a first aspect of the present invention, a smoke exhaust duct is provided, comprising:

[0006] a cylinder, the cylinder being vertically arranged with its top and bottom ends opened, the bottom end of the cylinder being used to connect to the furnace body to discharge the smoke in the furnace body;

[0007] A plug-type bottom valve is provided at the lower part of the cylinder, and comprises:

[0008] an adjusting member, wherein a first end of the adjusting member passes through a side wall of the cylinder and extends horizontally into the cylinder, and a second end of the adjusting member is disposed outside the cylinder;

[0009] The valve body has a side wall connected to the first end of the adjusting member, the valve body is located in the cylinder, the valve body can rotate around the axis, when the valve body is in a horizontal state, it can close the cylinder the most, when the valve body is in a vertical state, it can close the cylinder the least, rotating the adjusting member can rotate the valve body, and the surface of the valve body is smooth.

[0010] Furthermore, the adjusting member includes:

[0011] a connecting rod, wherein a first end of the connecting rod is horizontally inserted into the cylinder and connected to the valve body, and a second end of the connecting rod is located outside the cylinder;

[0012] A handle is connected to the second end of the connecting rod.

[0013] Furthermore, the adjusting member further comprises:

[0014] A fixing device is arranged on the outside of the cylinder and is connected to the connecting rod or the handle to fix the connecting rod or the handle.

[0015] Furthermore, the outer surface of the connecting rod is formed with threads, and the fixing device includes:

[0016] A fixing nut is located outside the cylinder and is threadedly connected to the connecting rod.

[0017] Furthermore, a Teflon coating is attached to the surface of the valve body.

[0018] Furthermore, the valve body is formed into an ellipsoid.

[0019] Furthermore, when the valve body is in a horizontal state, the inner wall of the cylinder and the horizontal cross-section of the valve body are both consistent circles.

[0020] Furthermore, an air supply port is formed on the side wall of the cylinder, and the air supply port is located above the plug-type bottom valve.

[0021] Furthermore, the smoke exhaust duct further comprises:

[0022] A plate valve is inserted into the air supply port and can adjust the opening of the air supply port.

[0023] Furthermore, the smoke exhaust duct further comprises:

[0024] The wind hood has openings at the top and bottom ends and is formed in a trumpet shape, the cross-sectional area of the opening at the bottom end is larger than the cross-sectional area of the opening at the top end, the bottom end of the wind hood surrounds the top end of the cylinder, and a predetermined gap is formed between the inner wall of the wind hood and the outer wall of the cylinder.

[0025] According to the utility model, the smoke exhaust duct includes a cylinder and a plug-type bottom valve. The smoke in the furnace body is discharged through the cylinder. The plug-type bottom valve can adjust the opening of the cylinder and the smoke exhaust volume of the cylinder. The rotary adjustment member can rotate the valve body so that the valve body gradually rotates between the horizontal state and the vertical state to achieve precise adjustment of the opening. The smoke can pass through the entire valve body. Compared with the plug-type bottom valve that partially and completely blocks the smoke, the flow of the smoke is smoother and the adhesion of impurities can be reduced. Even if impurities adhere to the surface of the valve body, they can be removed by rotating the valve body. The rotational friction of the plug-type bottom valve is small, and the influence of impurities on the rotation of the valve body is very small. In addition, the smooth surface of the valve body can also reduce the adhesion of impurities to the valve body. Therefore, by using a plug-type bottom valve, the adhesion of impurities can be reduced, and the opening can be accurately adjusted, and it is not easy to get stuck.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 It is a smoke exhaust duct of the prior art;

[0029] Figure 2 This is a structural diagram of the smoke exhaust duct in the first state according to the first embodiment of the utility model;

[0030] Figure 3 yes Figure 2 A structural diagram of the smoke exhaust duct in the second state of the embodiment;

[0031] Figure 4 yes Figure 2 A structural diagram of the smoke exhaust duct in the third state of the embodiment;

[0032] Figure 5 3. It is a three-view diagram of a plug-type bottom valve according to an embodiment of the present utility model;

[0033] Figure 6 This is a structural diagram of a smoke exhaust duct in a first state according to a second embodiment of the present utility model;

[0034] Figure 7 yes Figure 6 A structural diagram of the smoke exhaust duct in the second state of the embodiment;

[0035] Figure 8 yes Figure 6 A structural diagram of the smoke exhaust duct in the third state according to the embodiment.

[0036] Reference numerals:

[0037] 10. Exhaust pipe; 11. Cylinder; 12. Plug-type bottom valve; 13. Plug-type bottom valve; 131. Valve body; 132. Connecting rod; 133. Handle; 14. Plate valve; 15. Air hood;

[0038] 20. Furnace body. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] The smoke exhaust duct 10 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] like Figures 2 to 8 As shown, the smoke exhaust duct 10 according to the embodiment of the present invention includes a cylinder 11 and a plug-type bottom valve 13 .

[0046] First, the cylinder 11 is described. The cylinder 11 is vertically arranged, and its top and bottom ends are open. The bottom end of the cylinder 11 is used to connect to the furnace body 20 to exhaust the smoke in the furnace body 20.

[0047] like Figure 2 As shown, the flue gas in the furnace body 20 can be discharged through the cylinder 11 with openings at the upper and lower ends.

[0048] Next, the plug-type bottom valve 13 is described. The plug-type bottom valve 13 is arranged at the lower part of the cylinder 11. The plug-type bottom valve 13 includes an adjusting member and a valve body 131. The first end of the adjusting member extends horizontally into the cylinder 11 through the side wall of the cylinder 11, and the second end thereof is arranged on the outside of the cylinder 11. The side wall of the valve body 131 is connected to the first end of the adjusting member. The valve body 131 is located in the cylinder 11. The valve body 131 can rotate around the axis. When the valve body 131 is in a horizontal state, it can close the cylinder 11 to the maximum. When the valve body 131 is in a vertical state, it can close the cylinder 11 to the minimum. Rotating the adjusting member can rotate the valve body 131. The surface of the valve body 131 is smooth.

[0049] like Figures 2 to 5 As shown, the plug-type bottom valve 13 includes an adjusting member and a valve body 131. The adjusting member passes through the side wall of the cylinder 11 and connects to the side wall of the valve body 131, so that the valve body 131 can be rotated by the adjusting member outside the cylinder 11 to adjust the opening. The adjusting member can be a bolt, a rotating motor, etc.

[0050] The valve body 131 can be a plate (polygonal plate), an ellipsoid, a cone, etc. The rotation of the valve body 131 can change the opening of the cylinder 11, thereby controlling the exhaust volume of the cylinder 11. The valve body 131 is in a horizontal state ( Figure 2 The valve body 131 shown in FIG a is in a front view in a horizontal state (first state) and Figure 2 The valve body 131 is in a horizontal state (side view shown in Figure b), the closed cylinder 11 is the largest, that is, the opening is the smallest, and the smoke exhaust volume is the lowest. The valve body 131 is in a vertical state ( Figure 4 The valve body 131 shown in FIG a is in a front view in a vertical state (third state) and Figure 2 The valve body 131 is in a side view in a vertical state as shown in Figure b), with the closed cylinder 11 at the least, that is, the opening is the largest, and the smoke exhaust volume is the largest. By rotating the valve body 131 with the adjusting member, the opening of the valve body 131 can be gradually changed between the maximum and the minimum (for example Figure 4 The valve body 131 shown in Figure a is in a front view at a 45-degree state (second state) and Figure 2 (B) shows a side view of the valve body 131 at a 45-degree angle, enabling precise adjustment of the opening.

[0051] Flue gas can pass through the entire valve body 131. Compared to the partially completely blocked flue gas of the plug-type bottom valve 12, flue gas flows more smoothly, reducing the adhesion of impurities. Even if impurities adhere to the surface of the valve body 131, they can be removed by rotating the valve body 131. The plug-type bottom valve 13 relies on rotation to adjust the opening. The rotational friction is relatively low compared to the sliding friction. The opening of the plug-type bottom valve 13 is relatively smooth to adjust. Impurities have little effect on the rotation of the valve body 131, making it less likely to get stuck.

[0052] The surface of the valve body 131 can be made smooth by polishing, spray coating, etc. A smooth valve body 131 can also reduce the adhesion of impurities to the valve body 131.

[0053] The exhaust duct 10 described above comprises a cylinder 11 and a plug-type bottom valve 13. Flue gas from the furnace body 20 is discharged through the cylinder 11. The plug-type bottom valve 13 can adjust the opening of the cylinder 11 and the amount of smoke discharged. A rotary adjustment member rotates the valve body 131, gradually rotating it between horizontal and vertical positions, enabling precise adjustment of the opening. Flue gas can pass through the entire valve body 131. Compared to the partial and complete blockage of the flue gas by the plug-type bottom valve 12, this allows for smoother flue gas flow and reduces the adhesion of impurities. Even if impurities adhere to the surface of the valve body 131, they can be removed by rotating the valve body 131. The plug-type bottom valve 133 has low rotational friction, so impurities have minimal impact on the rotation of the valve body 131, making it less likely to get stuck. Furthermore, the smooth surface of the valve body 131 also reduces the adhesion of impurities. Therefore, the use of the plug-type bottom valve 133 reduces the adhesion of impurities, allows for precise adjustment of the opening, and reduces the likelihood of impurities getting stuck.

[0054] In some embodiments of the present invention, the regulating member includes a connecting rod 132 and a handle 133. The first end of the connecting rod 132 is horizontally inserted into the cylinder 11 and connected to the valve body 131, and the second end is located outside the cylinder 11. The handle 133 is connected to the second end of the connecting rod 132.

[0055] like Figures 2 to 4 As shown, the rotating handle 133 can drive the connecting rod 132 to rotate, and the connecting rod 132 drives the valve body 131 to rotate. In this way, the rotation of the valve body 131 can be easily adjusted.

[0056] Furthermore, the adjusting member further includes a fixing device, which is disposed on the outside of the cylinder 11 and connected to the connecting rod 132 or the handle 133 to fix the connecting rod 132 or the handle 133. The fixing device can be a fixing rope capable of connecting to the handle 133, or a pin disposed between the connecting rod 132 and the cylinder 11.

[0057] The fixing device can fix the handle 133 or the connecting rod 132 after the handle 133 is rotated to a certain angle, so that the valve body 131 is fixed at a predetermined angle.

[0058] Furthermore, the outer surface of the connecting rod 132 is formed with a thread, and the fixing device includes a fixing nut. The fixing nut is located outside the cylinder 11 and is threadedly connected to the connecting rod 132.

[0059] The handle 133 is rotated to a predetermined angle, and after the valve body 131 is at a certain angle, the fixing nut is rotated so that the fixing nut is pressed against the cylinder 11, so that the connecting rod 132 is fixed, thereby fixing the valve body 131 at this angle. When the opening needs to be adjusted again, the fixing nut can be loosened.

[0060] In some embodiments of the present invention, a Teflon coating is attached to the surface of the valve body 131 .

[0061] The surface of the valve body 131 is coated with Teflon, which can make the surface of the valve body 131 smoother and reduce the adhesion of impurities.

[0062] In some embodiments of the present invention, the valve body 131 is formed as an ellipsoid (a vertical cross-section of the valve body 131 when in a horizontal state is elliptical).

[0063] like Figure 5 As shown, the surface of the ellipsoidal valve body 131 is a smooth curved surface, and the impact effect of the flue gas is weakened when it flows through the valve body 131, thereby reducing the accumulation of impurities on the valve body 131.

[0064] Furthermore, when the valve body 131 is in a horizontal state, the inner wall of the cylinder 11 and the horizontal cross-section of the valve body 131 are both consistent circles.

[0065] like Figure 6 As shown, the valve body 131 is in a horizontal state and can completely close the cylinder 11, with high airtightness.

[0066] In some embodiments of the present invention, an air supply port is formed on the side wall of the cylinder 11 , and the air supply port is located above the plug-type bottom valve 13 .

[0067] As the title 6 to Figure 8 As shown, the air supply port can be used to supply air to the cylinder 11, thereby changing the air pressure and ventilation rate of the cylinder 11. The direction of smoke flow in the smoke exhaust duct is as follows: Figure 8 shown.

[0068] Furthermore, the smoke exhaust duct 10 further includes a plate valve 14 , which is inserted into the air supply port and can adjust the opening of the air supply port.

[0069] As the title 6 to Figure 8 As shown, the opening of the air supply port is adjusted by the plate valve 14, so that the amount of air supply can be accurately adjusted.

[0070] When the smoke exhaust pipe 10 has been running for a long time and a certain amount of impurities are attached to the surface of the valve body 131 of the plug-type bottom valve 13, the valve body 131 can be rotated 180 degrees, with the side with impurities facing upward, the air supply port is opened, and the surface of the valve body 131 is cleaned. The valve body 131 can be maintained without disassembling the smoke exhaust pipe 10, avoiding the need to stop the furnace for maintenance due to cooling caused by impurity blockage, and extending the kiln production cycle.

[0071] In some embodiments of the present invention, the smoke exhaust duct 10 further includes a hood 15. The hood 15 is open at both the top and bottom ends and is formed in a trumpet shape. The cross-sectional area of the opening at the bottom end is larger than the cross-sectional area of the opening at the top end. The bottom end of the hood 15 surrounds the top end of the cylinder body 11, and a predetermined gap is formed between the inner wall of the hood 15 and the outer wall of the cylinder body 11.

[0072] As the title 6 to Figure 8 As shown, a predetermined gap is formed between the inner wall of the hood 15 and the outer wall of the cylinder 11 to replenish air. Moreover, after the kiln has been running for a long time, various parts are subjected to thermal stress and micro deformation occurs, and the predetermined gap can also play a certain buffering role.

[0073] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A smoke exhaust duct (10), characterized in that: The smoke exhaust duct (10) comprises: a cylinder (11), the cylinder (11) being vertically arranged and having open top and bottom ends, the bottom end of the cylinder (11) being used for connecting to a furnace body (20) to discharge smoke in the furnace body (20); A plug-type bottom valve (13) is provided at the lower portion of the cylinder (11), and the plug-type bottom valve (13) comprises: an adjusting member, wherein a first end of the adjusting member passes through a side wall of the cylinder (11) and extends horizontally into the cylinder (11), and a second end of the adjusting member is arranged outside the cylinder (11); A valve body (131), the side wall of which is connected to the first end of the regulating member, the valve body (131) is located in the cylinder (11), the valve body (131) can rotate around an axis, and when the valve body (131) is in a horizontal state, it can close the cylinder (11) to the greatest extent, and when the valve body (131) is in a vertical state, it can close the cylinder (11) to the least extent, and rotating the regulating member can rotate the valve body (131), and the surface of the valve body (131) is smooth.

2. The smoke exhaust duct (10) according to claim 1, characterized in that: The adjusting member comprises: a connecting rod (132), wherein a first end of the connecting rod (132) is horizontally inserted into the cylinder (11) and connected to the valve body (131), and a second end of the connecting rod (132) is located outside the cylinder (11); A handle (133) is connected to the second end of the connecting rod (132).

3. The smoke exhaust duct (10) according to claim 2, characterized in that: The adjusting member further comprises: A fixing device is provided on the outside of the cylinder (11) and is connected to the connecting rod (132) or the handle (133) to fix the connecting rod (132) or the handle (133).

4. The smoke exhaust duct (10) according to claim 3, characterized in that: The outer surface of the connecting rod (132) is formed with a thread, and the fixing device includes: A fixing nut is located outside the cylinder (11) and is threadedly connected to the connecting rod (132).

5. The smoke exhaust duct (10) according to claim 1, characterized in that: The surface of the valve body (131) is coated with Teflon.

6. The smoke exhaust duct (10) according to claim 1, characterized in that: The valve body (131) is formed into an ellipsoid.

7. The smoke exhaust duct (10) according to claim 6, characterized in that: When the valve body (131) is in a horizontal state, the inner wall of the cylinder (11) and the horizontal cross-section of the valve body (131) are both consistent circles.

8. The smoke exhaust duct (10) according to claim 1, characterized in that: An air supply port is formed on the side wall of the cylinder (11), and the air supply port is located above the plug-type bottom valve (13).

9. The smoke exhaust duct (10) according to claim 8, characterized in that: The smoke exhaust duct (10) further comprises: A plate valve (14) is inserted into the air supply port and can adjust the opening of the air supply port.

10. The smoke exhaust duct (10) according to claim 1, characterized in that: The smoke exhaust duct (10) further comprises: The wind hood (15) is open at the top and bottom and is formed in a trumpet shape. The cross-sectional area of the opening at the bottom is larger than the cross-sectional area of the opening at the top. The bottom end of the wind hood (15) surrounds the top end of the cylinder (11), and a predetermined gap is formed between the inner wall of the wind hood (15) and the outer wall of the cylinder (11).

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