Prefabricated combined tuyere

Abstract

The utility model provides a prefabricated combined tuyere which comprises two rows of tuyere structures, the two rows of tuyere structures are mutually symmetrical at 180 degrees, and tuyeres in the two rows of tuyere structures are respectively in linear arrangement; an air inlet is formed in the outer side of the kiln coating of the rotary kiln, an air duct is arranged in each tuyere, an air outlet is formed in the inner side, corresponding to the rotary kiln, of each tuyere, and the air ducts communicate with the air inlets and the air outlets. The arrangement mode of the prefabricated combined tuyere is different from that of a traditional tuyere structure with a circle arranged in the circumferential direction, and assembling and overhauling are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary kiln accessory, specifically to a prefabricated combined tuyere. BACKGROUND

[0002] Rotary kiln refers to rotary calcination kiln (commonly known as rotary kiln), which is mainly applied in building materials, metallurgy, chemical industry, environmental protection and other production industries. In order to facilitate air supply to the rotary kiln, a tuyere is usually installed in the rotary kiln. At present, there are many tuyere structures for rotary kiln, for example: a carbon and needle coke rotary kiln tuyere disclosed by Chinese patent CN210426040U, a tuyere structure for rotary kiln disclosed by Chinese patent CN219103655U. These rotary kiln tuyere structures are uniformly arranged with multiple air inlets on a certain circumference inside the rotary kiln, but it is difficult to ensure the uniformity of air inlet in the air inlet section of the rotary kiln by this tuyere circumferential arrangement method.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiency of prior art, and provides a prefabricated combined tuyere.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A prefabricated combined tuyere, comprising two rows of tuyere structures, the two rows of tuyere structures are 180° symmetrical to each other, the tuyeres in the two rows of tuyere structures are arranged in a straight line respectively; the outer side of the kiln skin of the rotary kiln is provided with an air inlet, the inside of each tuyere is provided with an air duct, the inner side of the rotary kiln corresponding to the tuyere is provided with an air outlet, and the air duct is connected with the air inlet and the air outlet.

[0007] The air inlets on the rotary kiln are arranged at intervals, and the air ducts of adjacent two tuyere structures are connected.

[0008] The air duct comprises a radial air inlet section, a lateral air outlet section and a transition section connecting the air inlet section and the air outlet section; the outer end of the air inlet section is connected with the air inlet, and the end of the air outlet section is connected.

[0009] The radial air inlet section overlaps a certain radius of the rotary kiln, the lateral air outlet section is perpendicular to the side surface of the tuyere, and the air inlet section, the transition section and the air outlet section form an L-shaped air duct.

[0010] The middle part of the air inlet section is provided with a horizontal section, and the horizontal sections of adjacent two tuyeres are connected.

[0011] Each row of tuyere structures comprises 2-3 groups of tuyeres.

[0012] Compared with the prior art, the prefabricated combined tuyere has the beneficial effects that the prefabricated combined tuyere comprises two rows of tuyere structures which are symmetrical at 180 degrees, each tuyere structure comprises a row of tuyeres arranged in a straight line, and the prefabricated combined tuyere is more convenient to assemble and overhaul than the traditional tuyere structure which is arranged in a circle in the circumferential direction; in addition, air ducts of two adjacent tuyeres are communicated, so that the air fan is convenient to send air; the air duct of the tuyere is in an L-shaped structure, and the air outlet section is located at the side part, so that the tuyere can avoid as much as possible that sundries enter the air outlet section during the calcination process of the rotary kiln. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model.

[0014] Figure 2 is a structural schematic view of the tuyere (one) in the utility model.

[0015] Figure 3 is a structural schematic view of the tuyere (two) in the utility model.

[0016] Figure 4 is a structural schematic view of the rotary kiln in the utility model.

[0017] In the drawing: 1. Rotary kiln; 2. Air inlet; 3. Tuyere structure; 4. Tuyere; 5. Air inlet section; 6. Air outlet section; 7. Transition section; 8. Horizontal section. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be further described in detail below through specific embodiments.

[0019] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. "Mounting", "provided with", "connection" and the like can adopt conventional means in the prior art, for example: integrally provided, clamped and mounted, welded and connected, adhesively connected, bolted and connected and the like. For ordinary skilled in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances, and the appropriate connection, setting or mounting mode is selected in the prior art.

[0020] For example, Figures 1-4As shown, a prefabricated combined tuyere 4 comprises two rows of tuyere structures 3, the two rows of tuyere structures 3 are 180° symmetrical to each other, the tuyeres 4 in the two rows of tuyere structures 3 are arranged in a straight line respectively; the kiln skin outside of the rotary kiln 1 is provided with an air inlet 2, the inside of each tuyere 4 is provided with an air duct, the inside of the rotary kiln 1 corresponding to the tuyere 4 is provided with an air outlet, and the air duct is communicated with the air inlet 2 and the air outlet.

[0021] In one of the embodiments, the air inlets 2 on the rotary kiln 1 are arranged at intervals, and the air ducts of the adjacent two tuyere structures 3 are communicated.

[0022] In one of the embodiments, the air duct comprises a radial air inlet section 5, a lateral air outlet section 6 and a transition section 7 connecting the air inlet section 5 and the air outlet section 6; the outer end of the air inlet section 5 is communicated with the air inlet 2, and the end of the air outlet section 6 is communicated with the air outlet.

[0023] In one of the embodiments, the air inlet section 5 is radially arranged and overlaps a certain radius of the rotary kiln 1, the air outlet section 6 is perpendicular to the side of the tuyere 4, and the air inlet section 5, the transition section 7 and the air outlet section 6 form an L-shaped air duct.

[0024] In one of the embodiments, the middle part of the air inlet section 5 is provided with a horizontal section 8, and the horizontal sections 8 of the adjacent two tuyeres 4 are communicated.

[0025] In one of the embodiments, each row of tuyere structures 3 comprises 2-3 groups of tuyeres 4. In other embodiments, the number of tuyeres can be adjusted as needed.

[0026] The prefabricated combined tuyere comprises two rows of 180° symmetrical tuyere structures, each tuyere structure comprises a row of tuyeres arranged in a straight line, which is different from the traditional circumferential arrangement of a circle of tuyere structures, and is more convenient to assemble and maintain; in addition, the air ducts of the adjacent two tuyeres are communicated, which is convenient for the air blower to send air; the air duct of the tuyere is an L-shaped structure, and the air outlet section is located at the side, which can avoid as much as possible the entry of sundries into the air outlet section during the calcination process of the rotary kiln.

[0027] The above embodiments can be combined with each other.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A pre-assembled combination nozzle characterized by: The two-row tuyere structure is 180° symmetrical to each other, and the tuyeres in the two-row tuyere structure are respectively arranged in a straight line.

2. The pre-assembled combination flash and air nozzle of claim 1 wherein: The outer side of the kiln shell of the rotary kiln is provided with an air inlet, the inside of each tuyere is provided with an air duct, and the inner side of the rotary kiln corresponding to the tuyere is provided with an air outlet.

3. The pre-assembled combination flash and air nozzle of claim 2 wherein: The air inlets on the rotary kiln are arranged at intervals, and the air ducts of adjacent two tuyere structures are communicated.

4. The pre-assembled combination flash and air nozzle of claim 3 wherein: The air duct comprises a radial air inlet section, a lateral air outlet section and a transition section connecting the air inlet section and the air outlet section.

5. The pre-assembled combination flash and air nozzle of claim 4 wherein: The outer end of the air inlet section is communicated with the air inlet, and the end of the air outlet section is communicated with the air outlet.

6. The pre-assembled combination flash and air nozzle of claim 5 wherein: The air inlet section is radially arranged and overlaps a certain radius of the rotary kiln, the air outlet section is perpendicular to the side surface of the tuyere, and the air inlet section, the transition section and the air outlet section form an L-shaped air duct. The middle part of the air inlet section is provided with a horizontal section, and the horizontal sections of adjacent two tuyeres are communicated. Each row of tuyere structures comprises 2-3 groups of tuyeres.

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