Seamless steel tube raw material heating furnace

Abstract

The utility model discloses a seamless steel tube raw material heating furnace, which belongs to the technical field of heating furnaces, and comprises an outer preheating furnace, the outer preheating furnace comprises an outer furnace body and a block piece, and the block piece is arranged in the outer furnace body in a sliding and penetrating manner. The inner heating furnace is installed in the outer furnace body through the inner furnace body, a discharging piece is arranged at the bottom of the inner furnace body, the blocking piece blocks the next wave of raw materials so that the raw materials can be preheated in the outer furnace body, the inner furnace body is used for mixing and heating the raw materials in the inner furnace body, and the raw materials are discharged through the discharging piece; raw materials enter and fall onto a plurality of sliding plates through a feeding hopper to be stacked and preheated, the sliding plates are opened to enable the raw materials on the upper portion to fall into a guide hopper, a motor drives an auger to rotate to convey the raw materials upwards, and the raw materials fall to the upper portion to be evenly mixed, so that the raw materials are heated more evenly; and the influence on the seamless steel pipe due to large raw material temperature difference is reduced.

Description

Technical Field

[0001] The utility model relates to the field of heating furnaces, in particular to a seamless steel pipe raw material heating furnace. Background Art

[0002] During the production process of seamless steel pipes, the material must first be heated to a certain temperature in a heating furnace, and then subjected to operations such as threading, sizing, and reducing rolling.

[0003] In the prior art, there is a step-by-step seamless steel pipe raw material heating device with application number CN201920773497.9. The above scheme uses "a guide rail for conveying raw materials is provided inside the heating furnace body" to transport the raw materials to the preheating chamber and the heating chamber for heating. However, this method of transporting the raw materials to the preheating chamber and the heating chamber for heating by the guide rail does not heat the raw materials uniformly. The temperature of the raw materials at the bottom, middle and top is quite different, which will affect the subsequent rolling of seamless steel pipes. How to invent a seamless steel pipe raw material heating furnace to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a seamless steel pipe raw material heating furnace, which aims to improve the transportation of raw materials to the preheating chamber and the heating chamber for heating by guide rails. However, in this method of transporting raw materials to the preheating chamber and the heating chamber for heating by guide rails, the raw materials are not heated evenly, and the temperature of the raw materials at the bottom, middle and top is quite different, which will affect the later rolling of seamless steel pipes.

[0005] The utility model is implemented as follows: a seamless steel pipe raw material heating furnace, comprising an outer preheating furnace, the outer preheating furnace comprising an outer furnace body and a blocking member, the blocking member slidingly penetrates and is arranged in the outer furnace body; an inner heating furnace, the inner heating furnace is installed inside the outer furnace body through the inner furnace body, and a material discharge member is arranged at the bottom of the inner furnace body.

[0006] In a preferred technical solution of the utility model, the outer furnace body includes an outer shell and supporting legs, an upper hopper is fixedly installed on the top of the outer shell, a bottom plate is fixedly installed on the bottom of the outer shell, and a plurality of supporting legs are equally fixedly installed on the outside of the outer shell through a fixing ring.

[0007] In a preferred technical solution of the present utility model, the upper hopper is trumpet-shaped.

[0008] In a preferred technical solution of the present invention, the inner furnace body is fixedly installed inside the outer shell and the bottom plate through a material guide hopper, the material guide hopper is fixedly connected to the inner shell through a plurality of connecting rods, a motor is fixedly installed on the top of the inner shell, the rotating shaft of the motor rotates through the top of the inner shell and is fixedly connected to the auger, and a top cover is provided on the inner shell.

[0009] In a preferred technical solution of the utility model, the auger is rotatably mounted on the inner top of the inner shell through a bearing, the rotating shaft of the motor passes through the top of the inner shell and is fixedly connected to the auger, the guide hopper is trumpet-shaped, and the upper edge of the guide hopper fits with the interior of the outer shell.

[0010] In a preferred technical solution of the present invention, the blocking member is slidably inserted into the outer shell through a plurality of slides, two guide rails are provided on both sides of the slide, one end of the guide rail is fixedly mounted on the outer shell and the other end is fixedly connected to the inner shell, and the plurality of slides cooperate with the plurality of guide rails to form a circle around the outer shell.

[0011] In a preferred technical solution of the present invention, a handle is fixedly connected to the outside of the skateboard, and upper and lower edges are arranged at one end of the skateboard close to the handle.

[0012] In a preferred technical solution of the utility model, a support bar is fixedly connected between the two guide rails below the slide plate.

[0013] In a preferred technical solution of the utility model, the discharging member is fixedly connected to the guiding hopper via a lower hopper, a mounting shell is fixedly arranged between the lower hopper and the guiding hopper, and a baffle is slidably arranged in the mounting shell.

[0014] In a preferred technical solution of the utility model, the four corners at both ends of the baffle are rounded, and strip-shaped through holes are opened at both ends of the baffle.

[0015] The beneficial effect of the utility model is that the utility model obtains a seamless steel pipe raw material heating furnace through the above design. When in use, the raw materials enter through the upper hopper and fall onto multiple slides to be piled up for preheating. When the raw materials inside the inner shell are heated, the slide is opened to allow the raw materials above to fall and slide into the guide hopper, and the auger is driven by a motor to rotate to transport the raw materials upward. After reaching the top, the raw materials fall down to mix the internal raw materials evenly. After the mixing and heating is completed, the baffle is opened to allow the raw materials inside the guide hopper to fall through the inner shell for collection, so that the raw materials are heated more evenly, reducing the impact of the large difference in raw material temperature on the seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of one side structure provided by an embodiment of the utility model;

[0018] Figure 2 A partial cross-sectional structural schematic diagram provided for an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a cross-sectional structure provided for an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a blocking member provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the structure of an internal heating furnace provided in an embodiment of the utility model.

[0022] In the figure: 100-external preheating furnace; 110-external furnace body; 111-outer shell; 112-upper hopper; 113-support legs; 114-bottom plate; 120-blocking piece; 121-guide rail; 122-slide plate; 123-handle; 124-support bar; 200-internal heating furnace; 210-inner furnace body; 211-inner shell; 212-motor; 213-auger; 214-guide hopper; 215-connecting rod; 216-top cover; 220-discharging piece; 221-lower hopper; 222-mounting shell; 223-baffle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 and Figure 2The utility model provides a technical solution: a seamless steel pipe raw material heating furnace, including an external preheating furnace 100, the external preheating furnace 100 includes an external furnace body 110 and a blocking member 120, the blocking member 120 is slidably arranged in the external furnace body 110. An internal heating furnace 200, the internal heating furnace 200 is installed inside the external furnace body 110 through an internal furnace body 210, a discharge member 220 is arranged at the bottom of the internal furnace body 210, the blocking member 120 blocks the next wave of raw materials so that they are preheated in the external furnace body 110, and the internal furnace body 210 is used to mix and heat the internal raw materials and discharge the raw materials through the discharge member 220.

[0025] See also Figure 3 and Figure 4 The outer furnace body 110 includes a shell 111 and supporting legs 113. An upper hopper 112 is fixedly installed on the top of the shell 111, a bottom plate 114 is fixedly installed on the bottom of the shell 111, and a plurality of supporting legs 113 are fixedly installed in equal parts on the outside of the shell 111 through a fixing ring. The upper hopper 112 is trumpet-shaped for easy feeding.

[0026] See also Figures 3 to 5 The inner furnace body 210 is fixedly installed inside the outer shell 111 and the bottom plate 114 through a guide hopper 214. The guide hopper 214 is fixedly connected to the inner shell 211 through multiple connecting rods 215. A motor 212 is fixedly installed on the top of the inner shell 211. The rotating shaft of the motor 212 rotates and passes through the top of the inner shell 211 and is fixedly connected to the auger 213. A top cover 216 is provided on the inner shell 211. The top cover 216 is arc-shaped to facilitate the entry of raw materials. The inner shell 211 is a heating element. The auger 213 is rotatably mounted on the inner top of the inner shell 211 through a bearing, the rotating shaft of the motor 212 passes through the top of the inner shell 211 and is fixedly connected to the auger 213, the guide hopper 214 is arranged in a trumpet shape, and the upper edge of the guide hopper 214 is fitted with the inside of the outer shell 111. The guide hopper 214 guides the raw materials to the auger 213, and the motor 212 drives the auger 213 to mix the raw materials, and heats them through the inner shell 211.

[0027] See also Figure 2 and Figure 4The blocking member 120 is slidably inserted into the outer shell 111 through a plurality of slides 122. Two guide rails 121 are arranged on both sides of the slide 122. One end of the guide rail 121 is fixedly mounted on the outer shell 111 and the other end is fixedly connected to the inner shell 211. The plurality of slides 122 cooperate with the plurality of guide rails 121 to form a circle around the outer shell 111. The plurality of guide rails 121 are used to support the plurality of slides 122 and place them in the outer shell 111. A handle 123 is fixedly connected to the outside of the slide 122. An upper and lower edge is arranged at one end of the slide 122 close to the handle 123. The slide 122 is removed and placed by pulling the handle 123 by a hook or a robot. A support bar 124 is fixedly connected between the two guide rails 121 below the slide 122 to support the slide 122.

[0028] See also Figure 2 and Figure 4 The material discharging member 220 is fixedly connected to the guide hopper 214 through the lower hopper 221. A mounting shell 222 is fixedly arranged between the lower hopper 221 and the guide hopper 214. A baffle 223 is slidably arranged in the mounting shell 222. The four corners of the two ends of the baffle 223 are rounded, and the two ends of the baffle 223 are provided with strip-shaped through holes. The baffle 223 is slidably inserted into the mounting shell 222 to block the raw materials in the guide hopper 214, and the baffle 223 is pulled out by a hook or a manipulator.

[0029] Working principle: the raw materials enter through the upper hopper 112 and fall onto a plurality of slide plates 122 for stacking and preheating. When the raw materials inside the inner shell 211 are heated, the slide plates 122 are opened to allow the raw materials above to fall and slide into the guide hopper 214. The motor 212 drives the auger 213 to rotate and transport the raw materials upward. After reaching the top, the raw materials fall down to mix the internal raw materials evenly. After the mixing and heating is completed, the baffle 223 is opened to allow the raw materials inside the guide hopper 214 to fall through the inner shell 211 for collection.

[0030] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A seamless steel pipe raw material heating furnace, characterized in that: include An external preheating furnace, the external preheating furnace comprising an external furnace body and a blocking member, the blocking member being slidably disposed through the external furnace body; An inner heating furnace, wherein the inner heating furnace is installed inside the outer furnace body through an inner furnace body, and a discharge piece is provided at the bottom of the inner furnace body; The outer furnace body comprises an outer shell and supporting legs, an upper hopper is fixedly mounted on the top of the outer shell, a bottom plate is fixedly mounted on the bottom of the outer shell, and a plurality of supporting legs are fixedly mounted on the outside of the outer shell in equal parts through a fixing ring; The inner furnace body is fixedly installed inside the outer shell and the bottom plate through a material guide hopper, the material guide hopper is fixedly connected to the inner shell through a plurality of connecting rods, a motor is fixedly installed on the top of the inner shell, the rotating shaft of the motor rotates through the top of the inner shell and is fixedly connected to the auger, and a top cover is provided on the inner shell; The auger is rotatably mounted on the inner top of the inner shell via a bearing, the rotating shaft of the motor passes through the top of the inner shell and is fixedly connected to the auger, and the guide hopper is horn-shaped, and the upper edge of the guide hopper fits with the interior of the outer shell.

2. A seamless steel pipe raw material heating furnace as claimed in claim 1, characterized in that: The upper hopper is trumpet-shaped.

3. A seamless steel pipe raw material heating furnace as claimed in claim 1, characterized in that: The blocking member is slidably inserted into the outer shell through a plurality of slides, two guide rails are arranged on both sides of the slide, one end of the guide rail is fixedly mounted on the outer shell and the other end is fixedly connected to the inner shell, and the plurality of slides cooperate with the plurality of guide rails to form a circle around the outer shell.

4. A seamless steel pipe raw material heating furnace as claimed in claim 3, characterized in that: A handle is fixedly connected to the outside of the slide board, and an end of the slide board close to the handle is provided with upper and lower edges.

5. A seamless steel pipe raw material heating furnace as claimed in claim 3, characterized in that: A support bar is fixedly connected between the two guide rails below the slide plate.

6. A seamless steel pipe raw material heating furnace as claimed in claim 1, characterized in that: The material discharging member is fixedly connected to the material guiding hopper via a lower material hopper, a mounting shell is fixedly arranged between the lower material hopper and the material guiding hopper, and a baffle is slidably arranged in the mounting shell.

7. A seamless steel pipe raw material heating furnace as claimed in claim 6, characterized in that: The four corners of both ends of the baffle are rounded, and strip-shaped through holes are opened at both ends of the baffle.

Images