Feeding device for steel belt furnace and steel belt furnace

Abstract

The utility model relates to the technical field of catalyst feeding, and discloses a feeding device for a steel belt furnace and the steel belt furnace, the feeding device for the steel belt furnace comprises a stock bin, a material distribution bag is arranged at the central axis of the stock bin; the feeding pipe is connected with the lower end of the stock bin; the feeding valve is arranged at the joint of the stock bin and the feeding pipe; wherein the diameter of the feed port of the cloth bag is smaller than that of the feed port of the stock bin, and the diameter of the discharge port of the cloth bag is smaller than that of the discharge port of the stock bin. According to the feeding device for the steel belt furnace, the material distribution bag is arranged at the central axis of the stock bin, and the sizes of the feeding port and the discharging port of the material distribution bag are set to be smaller than those of the feeding port and the discharging port of the stock bin, so that materials are prevented from falling off from the central positions deviating from the stock bin and the feeding pipe, material scattering is reduced, and stable feeding of the feeding device for the steel belt furnace is achieved. The feeding device is simple in structure, low in improvement cost and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of catalyst preparation, and particularly relates to a feeding device for a steel belt furnace and a steel belt furnace. BACKGROUND

[0002] As an important link of catalyst preparation, the stability and adaptability of calcination are one of the key factors affecting the performance of catalysts. As a kind of continuous heat treatment furnace, the steel belt furnace is mainly used for calcination and reduction of metal powder and metal salts.

[0003] In the existing steel belt furnace, unstable feeding is prone to occur during feeding. Specifically, due to the influence of the structure of the material bin, part of the material is prone to slide along the side wall of the material bin when falling through the material bin, which causes the falling material to deviate from the center of the material bin, and then fall along the side wall of the feeding pipe to a position deviating from the center of the steel belt. In addition, the material will scatter, causing waste of catalyst and affecting the stability of feeding. Moreover, with the continuous development of new industrial catalyst products, some specific new materials have strict requirements on oxygen content during calcination. When the oxygen content reaches a certain concentration, there is a risk of spontaneous combustion and explosion. Therefore, it is necessary to strictly ensure the air tightness and stability of the internal pressure of the steel belt furnace. In addition, after the material falls into the steel belt furnace, it is conveyed by the steel belt and purged by inert gas, which is easy to cause the catalyst to scatter outside the steel belt and cause uneven distribution of the material, resulting in waste of material and sintering.

[0004] Therefore, the calcination process must be controlled in a fine and stable manner. The existing steel belt furnace cannot meet the calcination requirements of different products or forms of catalysts, and therefore needs to be modified. SUMMARY

[0005] One of the technical problems to be solved by the utility model is that the existing steel belt furnace feeding device cannot realize stable feeding of catalysts.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a feeding device for a steel belt furnace in the first aspect, which comprises a material bin, a material bin is provided with a material bag at the center axis; a feeding pipe is connected with the lower end of the material bin; a feeding valve is arranged at the connection between the material bin and the feeding pipe; wherein the diameter of the feeding port of the material bag is smaller than the diameter of the feeding port of the material bin, and the diameter of the discharging port of the material bag is smaller than the diameter of the discharging port of the material bin.

[0007] In some embodiments, the height of the material bag is equal to the height of the material bin.

[0008] In some embodiments, the diameter of the material bag gradually decreases along the feeding direction.

[0009] In some embodiments, the inner side wall of the bin is provided with a support frame, and the cloth bag is fixed on the support frame.

[0010] The utility model discloses a second aspect provides a kind of steel belt furnace, comprising: cover body, the cover body has sealed material conveying space;Steel band, the steel band is arranged in the cover body interior and along the length direction of the cover body is arranged;The feeding device for steel belt furnace, the feeding device is arranged above the cover body;Furnace body, the furnace body interior is communicated with the material conveying space;Wherein, the output end of the feeding pipe is inserted into the interior of the cover body and is located above the steel band, the feeding pipe and the cover body sealingly engage, the furnace body and the cover body (6) sealingly engage.

[0011] In some embodiments, further comprising air inlet pipe, the output end of the air inlet pipe is inserted into the interior of the cover body and is located above the steel band.

[0012] In some embodiments, pressure regulating valve is arranged on the air inlet pipe, and the pressure regulating valve is arranged outside the cover body.

[0013] In some embodiments, the end face of the output end of the air inlet pipe is sealed, and the sidewall of the output end of the air inlet pipe is provided with an exhaust hole.

[0014] In some embodiments, the sidewall of the output end of the feeding pipe is detachably provided with a baffle, and the baffle is arranged perpendicular to the extension direction of the steel band.

[0015] In some embodiments, further comprising an air extraction pipe, one end of the air extraction pipe is inserted into the interior of the cover body, and the other end is connected with a gas detector to detect the oxygen content of the material conveying space.

[0016] Through the above technical scheme, the cloth bag is arranged at the central axis of the bin, the size of the feeding port and the discharging port of the cloth bag is set to be smaller than the size of the feeding port and the discharging port of the bin, so as to avoid the material falling from the central position deviating from the bin and the feeding pipe, reduce the scattering of the material, and realize the stable feeding of the feeding device for the steel belt furnace. The feeding device of the utility model has simple structure, low modification cost and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall schematic view of the feeding device for the steel belt furnace disclosed by the utility model;

[0018] Figure 2 is the local schematic view of the feeding pipe of the feeding device for the steel belt furnace disclosed by the utility model;

[0019] Figure 3 is the local schematic view of the air inlet pipe of the feeding device for the steel belt furnace disclosed by the utility model.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1, bin; 2, feed valve; 3, feed pipe; 4, steel belt; 5, air inlet pipe; 51, air inlet main pipe; 52, air inlet branch pipe; 53, gas distributor; 54, air outlet hole; 6, cover body; 7, baffle; 71, handle; 8, cloth bag; 9, air inlet valve; 10, gas detector; 11, flow detector; 12, air extraction pipe; 13, scale; 14, pressure regulating valve; 15, pressure detector; 16, fan. DETAILED DESCRIPTION

[0022] The specific embodiments described hereinbefore are presented by way of example to teach the best mode of practicing the present application. The embodiments described hereinbefore should not be construed as limiting upon the scope, applicability or configuration of the present application. Various modifications can be made to the illustrated embodiments as would be obvious to one skilled in the art, and the generic principles defined hereinbefore can be applied to other embodiments and applications without departing from the spirit or scope of the application. For example, while the present application has been described in the context of particular embodiments, it will be apparent to those skilled in the art that the application can be embodied in many other specific forms and changes can be made to the form without departing from the spirit or essential characteristics of the application. Accordingly, the application is not limited to the embodiments described hereinbefore, but is instead defined by the claims appended hereto.

[0023] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0024] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] In addition, "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0026] It should be further explained that in the description of the utility model, unless otherwise explicitly defined and limited, the terms "mounting", "connecting" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. When a specific device is described to be located between a first device and a second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0027] All the terms used in the utility model have the same meaning as understood by the ordinary skilled person in the field to which the utility model belongs, unless otherwise specifically defined. It should also be understood that the terms defined in, for example, a general dictionary should be interpreted to have a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless specifically defined here.

[0028] Techniques, methods and equipment known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the specification.

[0029] To solve the problem that the existing steel belt furnace feeding device cannot realize stable feeding of catalyst in the prior art, the utility model provides a first aspect for a steel belt furnace feeding device, comprising: a stock bin 1, a material distribution bag 8 is arranged at the central axis of the stock bin 1;A feeding pipe 3 connected with the lower end of the stock bin 1;A feeding valve 2 arranged at the connection between the stock bin 1 and the feeding pipe 3;Wherein, the feeding port diameter of the material distribution bag 8 is smaller than the feeding port diameter of the stock bin 1, and the discharge port diameter of the material distribution bag 8 is smaller than the discharge port diameter of the stock bin 1.

[0030] As shown in Figure 1 The stock bin 1 can be provided as a funnel-shaped structure with both ends open for receiving the feeding of materials. The discharge port of the stock bin 1 is connected with the feeding pipe 3, which can be a hollow straight pipe with both ends open, for receiving the materials of the stock bin 1 and conveying them into the steel belt furnace cover body.

[0031] The connection between the stock bin 1 and the feeding pipe 3 is provided with a feeding valve 2 for controlling the opening and closing of the feeding pipe 3 and the feeding amount, the feeding valve 2 can be selected from a rotary discharge valve and a star-shaped material rotating valve, which has a sealing structure inside, which can effectively ensure the air tightness of the feeding pipe 3 during feeding, to avoid the change of the steel belt furnace cover body pressure and the unstable feeding caused by the introduction of air.

[0032] The material bin 1 is further provided with a cloth bag 8. The cloth bag 8 is arranged at the central axis, so that the material falling from a position deviating from the center of the material bin 1 can be avoided to fall to positions on both sides of the feeding valve 2, and the material scattering is reduced. In this way, even if the material is scattered to the side after entering the feeding valve 2 due to the rotation of the feeding valve 2, since the material falls into the feeding valve 2 at the beginning, the material is still basically at the central position of the feeding valve 2. At the same time, the falling speed of the material in the cloth bag 8 can be further limited by controlling the feeding speed of the material into the material bin 1, so as to ensure that the material falls to the middle position of the feeding valve 2 as much as possible, and stable feeding of the feeding device for the steel belt furnace is realized. In addition, if a large amount of material needs to be roasted, the material falling into the feeding valve 2 will be scattered to both sides along with the rotation of the feeding valve 2, but the material in the groove of the feeding valve 2 still has a normal distribution, that is, most of the material in the feeding valve 2 is still mainly concentrated at the central position. Therefore, the material entering the input end of the feeding pipe 3 through the feeding valve 2 can still be located at the center, and then falls along the central axis of the feeding pipe 3.

[0033] The diameter of the feeding port of the cloth bag 8 can be preferably set to 1 / 2 to 2 / 3 of the diameter of the feeding port of the material bin 1, and the diameter of the discharging port of the cloth bag 8 can be preferably set to 1 / 2 to 2 / 3 of the diameter of the discharging port of the material bin 1. The feeding device of the utility model has the advantages of simple structure, low modification cost and convenient operation.

[0034] In some embodiments, the height of the cloth bag 8 is equal to the height of the material bin 1. As shown in Figure 1 the height of the cloth bag 8 is equal to the height of the material bin 1, that is, the feeding port and the discharging port of the cloth bag 8 are flush with the feeding port and the discharging port of the material bin 1 respectively, so that the material feeding is facilitated, and the material is prevented from falling to the area outside the cloth bag 8, thereby affecting the feeding stability.

[0035] In some embodiments, the diameter of the cloth bag 8 gradually decreases along the feeding direction. As shown in Figure 1 the diameter of the cloth bag 8 gradually decreases along the feeding direction, so that a conical structure is formed, the material continuously and uniformly falls along the inner wall of the cloth bag 8, and the feeding stability is further increased.

[0036] In some embodiments, the inner side wall of the material bin 1 is provided with a support frame, and the cloth bag 8 is fixed on the support frame. Since the cloth bag 8 is located at the central axis of the material bin 1, the support frame (not shown in the figure) is needed for fixation. The support frame can be arranged near the feeding port and the discharging port of the cloth bag 8, and the support frame and the material bin 1 can be connected by clamping or screwing.

[0037] The utility model discloses a second aspect provides a kind of steel belt furnace, comprising: cover body 6, cover body 6 has sealed material conveying space;Steel band 4, steel band 4 is arranged in cover body 6 inside and along the length direction of cover body 6 is arranged;The aforementioned feeding device for steel belt furnace, feeding device is arranged above cover body 6;Furnace body, the inside of the furnace body is communicated with the material conveying space;Wherein, the output end of feeding pipe 3 is inserted into the inside of cover body 6 and is located above steel band 4, feeding pipe 3 and cover body 6 sealingly engage, and furnace body and cover body 6 sealingly engage.

[0038] As Figure 1 Indicated, cover body 6 is hollow shell, material is transported by feeding device into the material conveying space of cover body 6 and is sent to furnace body and is baked, cover body 6 is arranged to be sealed and can make internal pressure stable, guarantee material baking quality.Steel band 4 is used to receive the material that feeding device falls and is arranged material, and steel band 4 extends along the length direction of cover body 6, and its running direction is also parallel to the length direction of cover body 6.Feeding device is preferably arranged in the middle portion above cover body 6, and the output end of the feeding pipe 3 of feeding device can be vertically inserted into the inside of cover body 6, and the projection of output end on pipe 4 can be located at the axis of steel band 4, so that material can be as far as possible to fall in the central position of steel band 4, avoid material to drop to steel band 4 outside in the process of material distribution, reduce yield.The connecting portion of the output end of feeding pipe 3 and cover body 6 can be sealed by welding, or be sealed by sealing gasket, sealing material and the like, to ensure the airtightness of material conveying space.Furnace body can be located at the end of steel band 4 (not shown in the drawing), and the side wall of furnace body can be sealingly connected with the side wall of cover body 6 to ensure the airtightness in steel belt furnace.

[0039] In some embodiments, further comprising air inlet pipe 5, and the output end of air inlet pipe 5 is inserted into the inside of cover body 6 and is located above steel band 4.As Figure 1 Indicated, material baking needs to be carried out in inert gas environment, and air inlet pipe 5 is used to introduce inert gas into material conveying space to form inert gas environment to meet baking conditions.The output end of air inlet pipe 5 is inserted into the inside of cover body 6 and is located above steel band 4, and sealingly engages with cover body 6, to ensure the airtightness of material conveying space.The output end of air inlet pipe 5 is preferably arranged near the starting position close to the operation of steel band 4.

[0040] In some embodiments, pressure regulating valve 14 is arranged on air inlet pipe 5, and pressure regulating valve 14 is arranged outside cover body 6.As Figure 1As shown, the pressure regulating valve 14 is used to further control the pressure stability of the material conveying space of the cover body 6, the pressure regulating valve 14 is preferably a self-acting pressure regulating valve to realize automatic control and does not need external power supply. In addition, in the direction close to the cover body 6, the air inlet pipe 5 is sequentially provided with an air inlet valve 9, a pressure detection meter 15 and a flow detection meter 11, and the pressure regulating valve 14 is arranged between the air inlet valve 9 and the pressure detection meter 15. The air inlet valve 9, the pressure detection meter 15 and the flow detection meter 11 are also arranged outside the cover body 6.

[0041] In some embodiments, the end face of the output end of the air inlet pipe 5 is sealed, and the side wall of the output end of the air inlet pipe 5 is provided with an exhaust hole 54.

[0042] The prior art air inlet pipe usually sets the exhaust hole at the end face of the output end, which causes the gas inlet direction to be perpendicular to the surface of the steel belt, and causes the material to be blown out of the steel belt during the steel belt laying process. As Figure 3 As shown, the end face of the output end of the air inlet pipe 5 is sealed and the exhaust hole 54 is provided on the side wall, so that the gas inlet direction is changed to be parallel to the extension direction of the steel belt 4, avoiding the problem of blowing the material out of the steel belt 4.

[0043] The air inlet pipe 5 can be preferably provided in the form of including one air inlet main pipe 51 and a plurality of air inlet branch pipes 52, at this time, the plurality of air inlet branch pipes 52 constitute the output end of the air inlet pipe 5, so that the air inlet amount is increased, the air inlet efficiency is improved, and it is beneficial to rapidly form the inert gas environment of the material conveying space.

[0044] Alternatively, the lower ends of the plurality of air inlet branch pipes 52 can also be communicated through the horizontally arranged gas distributor 53, and a plurality of exhaust holes 54 are provided on the side wall of the gas distributor 53. In this way, the gas distribution is more uniform, and the air inlet effect of the air inlet pipe 5 is further improved.

[0045] In some embodiments, a baffle 7 is detachably arranged on the side wall of the output end of the feeding pipe 3, and the baffle 7 is arranged perpendicular to the extension direction of the steel belt 4.

[0046] As Figure 1 , 2 As shown, the material falls on the fixed 4 and runs with the steel belt 4, and the stacking height of the material on the steel belt 4 is affected by the running speed of the steel belt 4. In order to keep the material height on the pipe 4 consistent, a vertically arranged baffle 7 is arranged on the side wall of the output end of the feeding pipe 3, and the lower end of the baffle 7 can extend below the output end to limit the material height on the pipe 4. The baffle 7 is detachably arranged, which can facilitate the material to be limited to different heights.

[0047] A scale 13 can be provided on the sidewall of the output end of the feeding pipe 3 to accurately adjust the up and down movement of the baffle 7. The adjustable range of the baffle 7 is 0-15 cm, and the minimum height of the material limit can be less than 1 cm. The baffle 7 can be screwed to the output end of the feeding pipe 3.

[0048] In some embodiments, a suction pipe 12 is further included, one end of the suction pipe 12 extends into the inside of the cover 6, and the other end is connected with the gas detector 10 to detect the oxygen content of the material conveying space. As shown in Figure 1 The suction pipe 12 can be provided with a fan 16 to perform suction, and the end of the suction pipe 12 extending into the cover 6 is in sealing engagement with the cover 6, and the extending position avoids the air inlet pipe 5 and the feeding pipe 3.

[0049] So far, the embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0050] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A feeding device for a steel strip furnace, characterized in that, include: A material hopper (1) is provided with a cloth bag (8) at the central axis of the material hopper (1); Feed pipe (3), the feed pipe (3) is connected to the lower end of the hopper (1); Feed valve (2), the feed valve (2) is located at the connection between the silo (1) and the feed pipe (3); The diameter of the inlet of the fabric bag (8) is smaller than the diameter of the inlet of the silo (1), and the diameter of the outlet of the fabric bag (8) is smaller than the diameter of the outlet of the silo (1).

2. The feeding device for a steel strip furnace according to claim 1, characterized in that, The height of the fabric bag (8) is equal to the height of the hopper (1).

3. The feeding device for a steel strip furnace according to claim 1, characterized in that, The diameter of the fabric bag (8) gradually decreases along the feeding direction.

4. The feeding device for a steel strip furnace according to claim 1, characterized in that, The inner wall of the silo (1) is provided with a support frame, and the fabric bag (8) is fixed on the support frame.

5. A steel strip furnace, characterized in that, include: Cover (6), the cover (6) having a sealed material conveying space; Steel strip (4), the steel strip (4) is disposed inside the cover (6) and is disposed along the length direction of the cover (6); The feeding device for a steel strip furnace according to any one of claims 1-4, wherein the feeding device is disposed above the cover (6); Furnace body, the interior of which is connected to the material conveying space; The output end of the feed pipe (3) extends into the interior of the cover (6) and is located above the steel strip (4). The feed pipe (3) and the cover (6) are sealed together, and the furnace body and the cover (6) are sealed together.

6. The steel strip furnace according to claim 5, characterized in that, It also includes an air intake pipe (5), the output end of which extends into the inside of the cover (6) and is located above the steel strip (4).

7. The steel strip furnace according to claim 6, characterized in that, A pressure regulating valve (14) is provided on the air intake pipe (5), and the pressure regulating valve (14) is located outside the cover (6).

8. The steel strip furnace according to claim 6, characterized in that, The end face of the output end of the air intake pipe (5) is sealed, and an exhaust hole (54) is provided on the side wall of the output end of the air intake pipe (5).

9. The steel strip furnace according to claim 5, characterized in that, A baffle (7) is detachably provided on the side wall of the output end of the feed pipe (3), and the baffle (7) is configured to be perpendicular to the extension direction of the steel strip (4).

10. The steel strip furnace according to claim 5, characterized in that, It also includes an exhaust pipe (12), one end of which extends into the inside of the cover (6), and the other end is connected to a gas detector (10) to detect the oxygen content of the material conveying space.

Images