Waste sulfuric acid regeneration cracking feeding device

Abstract

The utility model discloses a waste sulfuric acid regeneration cracking feeding device which comprises a feeding unit and a conveying unit, the feeding unit comprises a hopper and a conveying mechanism, the hopper is provided with a conveying part and a discharging port which are communicated with each other, the conveying mechanism is provided with a conveying shaft rotationally connected in the conveying part, and the conveying shaft is used for pushing materials to the discharging port. The feeding unit comprises a feeding spoon, a rotary driving mechanism and a linear driving mechanism, the feeding spoon is located below the discharging port and used for receiving materials moving out of the discharging port, the rotary driving mechanism is provided with a rotary part, the rotary part is provided with the feeding spoon, the linear driving mechanism is provided with a displacement part, and the displacement part is provided with the rotary driving mechanism; the linear driving mechanism is used for driving the feeding spoon to enter the furnace opening. The feeding unit and the feeding unit are arranged separately, so that the feeding unit does not make direct contact with the furnace mouth, material adhesion, caking and decomposition caused by path temperature rise are avoided, and a feeding spoon can conduct continuous and automatic feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid regeneration equipment, in particular to a waste sulfuric acid regeneration cracking feeding device. Background Art

[0002] In the stainless steel pickling waste sulfuric acid regeneration process, the waste sulfuric acid is dried and dehydrated to form acid anhydride and metal salt crystals, which are then cracked in a cracking furnace at high temperature to form metal oxides and sulfur dioxide and sulfur trioxide gases.

[0003] The materials are generally sent into the cracking furnace for cracking by manual feeding, vibration feeding, spiral pushing and other methods. Manual feeding is to manually send the materials directly into the furnace mouth through tools. Since the operators are in contact with the materials for a long time and are close to the high-temperature furnace mouth, they are prone to safety accidents such as scalding, burning, acid corrosion, etc. At the same time, manual feeding has high labor intensity, low efficiency and high cost. Vibration feeding is to temporarily store the materials in the hopper, and a gate is set at the outlet below the hopper to adjust the feeding speed. A conveying guide groove is set below the hopper, and a vibration device is set below the guide groove. The vibration device forces the guide groove to vibrate and transports the materials in the conveying guide groove to the furnace mouth. The feeding speed is adjusted by adjusting the vibration frequency to achieve the purpose of feeding the cracking furnace. Spiral pushing is to temporarily store the materials in the hopper, and the spiral mechanism is connected below the hopper. The motor drives the spiral to rotate and push the materials to the furnace mouth to achieve the purpose of feeding.

[0004] Although vibrating feeding and spiral pushing can solve the problems of manual feeding, the temperature of the furnace mouth is constantly transmitted to the guide groove and spiral groove because the conveying guide groove and the spiral pushing outlet are connected to the furnace mouth. Due to the characteristics of the material, a certain temperature causes the material to melt, resulting in agglomeration and adhesion, which affects the pushing of the material. At the same time, due to the continuous accumulation and conduction of temperature, the temperature of the material in the trough eventually rises, the material in the trough agglomerates, adheres, and partially decomposes to produce smoke. Since the vibration device and the spiral motor also operate at a certain temperature, a long time will affect the operating life. Utility Model Content

[0005] The embodiment of the present application provides a waste sulfuric acid regeneration cracking feeding device to solve the problem that high temperature causes the material to melt and easily cause agglomeration and adhesion in the hopper.

[0006] The present application provides a waste sulfuric acid regeneration cracking feeding device, comprising:

[0007] Feed unit, comprising:

[0008] A hopper having a conveying portion and a discharge port that are interconnected;

[0009] A conveying mechanism, comprising a conveying shaft rotatably connected to the conveying portion, wherein the conveying shaft is used to push the material to the discharge port;

[0010] Feeding unit, comprising:

[0011] A feeding spoon, located below the discharge port, for receiving the material moving out of the discharge port;

[0012] A rotary drive mechanism having a rotary portion, the rotary portion being equipped with the feeding spoon;

[0013] The linear drive mechanism has a displacement portion, the displacement portion is equipped with the rotary drive mechanism, and the linear drive mechanism is used to drive the feeding spoon to enter the furnace mouth.

[0014] The beneficial effect of the above embodiment is that the feed unit and the feeding unit are arranged separately, so that the feed unit is not in direct contact with the furnace mouth, avoiding material adhesion, agglomeration and decomposition caused by path heating, so that the feeding spoon can feed continuously and automatically.

[0015] Based on the above embodiments, the embodiments of the present application may also be improved as follows:

[0016] In one embodiment of the present application: the feeding unit further includes: an arch breaking mechanism, the hopper further includes a feeding part connected to the conveying part, the arch breaking mechanism includes an arch breaking shaft rotatably connected to the feeding part, and the arch breaking shaft is used to break the bridge structure formed by the material. The beneficial effect of this step: the bridge structure formed by the material is broken by the arch breaking mechanism, so that the material can move normally into the conveying part.

[0017] In one embodiment of the present application: a plurality of arch breaking members are arranged around the arch breaking shaft and spaced apart along the axial direction of the arch breaking shaft, and the arch breaking member has a pointed structure. The beneficial effect of this step: the bridge structure can be easily pierced by the pointed structure, so that the material moves normally.

[0018] In one embodiment of the present application: the linear drive mechanism includes: a guide rail; a slider, which is slidably arranged on the guide rail, and the rotary drive mechanism is installed on the slider; a first motor; a lead screw nut assembly, which is arranged between the first motor and the slider, and the lead screw nut assembly is used to drive the slider to move along the guide rail. The beneficial effect of this step: the translational movement of the feeding spoon is realized.

[0019] In one embodiment of the present application: the rotation drive mechanism comprises: a second motor connected to the slider; a rotating shaft connected to the output shaft of the second motor, and the rotating shaft is also rotatably connected to the slider. The beneficial effect of this step: the rotation movement of the spoon is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural schematic diagram of a waste sulfuric acid regeneration cracking feeding device;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the feeding unit;

[0023] Figure 3 Schematic diagram of the two-dimensional structure of the feeding unit.

[0024] Among them, 1 is a feeding unit, 101 is a hopper, 102 is a conveying mechanism, 103 is a conveying part, 104 is a discharge port, 105 is a feeding part, 106 is an arch breaking mechanism, and 107 is an arch breaking member;

[0025] 2 feeding unit, 201 feeding spoon, 202 rotary drive mechanism, 203 linear drive mechanism. DETAILED DESCRIPTION

[0026] In this application, unless otherwise clearly specified and limited, the terms in this application should be understood in a broad sense, such as connection can be fixed connection, detachable connection or integration, direct connection or indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of different terms in this utility model can be understood according to specific circumstances, and the scope of the specific meaning should be limited to realizing the functions of this application.

[0027] like Figure 1 , 2 As shown, a waste sulfuric acid regeneration cracking feeding device includes: a feeding unit 1 and a feeding unit 2. The feeding unit 1 includes: a hopper 101 and a conveying mechanism 102. The hopper 101 has a conveying part 103 and a discharge port 104 which are interconnected. The conveying mechanism 102 has a conveying shaft rotatably connected to the conveying part 103, and the conveying shaft is used to push the material to the discharge port 104. The feeding unit 2 includes: a feeding spoon 201, a rotating drive mechanism 202, and a linear drive mechanism 203. The feeding spoon 201 is located below the discharge port 104, and the feeding spoon 201 is used to receive the material moving out of the discharge port 104. The rotating drive mechanism 202 has a rotating part, and the rotating part is equipped with the feeding spoon 201. The linear drive mechanism 203 has a displacement part, and the displacement part is equipped with the rotating drive mechanism 202. The linear drive mechanism 203 is used to drive the feeding spoon 201 into the furnace port.

[0028] In some embodiments of the present application, Figure 1As shown, the waste sulfuric acid regeneration cracking feeding device also includes: a frame, a feed unit 1 and a feeding unit 2 are both installed on the frame, and the waste sulfuric acid regeneration cracking feeding device is arranged adjacent to the cracking furnace.

[0029] In some embodiments of the present application, Figure 2 As shown, the hopper 101 also has a feeding part 105 connected to the conveying part 103, the feeding part 105 is a conical structure with the cone tip downward, the conveying part 103 is a columnar structure arranged laterally at the lower end of the hopper 101, and the conveying mechanism 102 adopts the double-screw conveying mechanism 102 in the prior art, and the two auger shafts of the double-screw conveying mechanism 102 are rotatably arranged on the inner side of the conveying part 103, and the auger motor of the double-screw conveying mechanism 102 is installed on the outer side of the hopper 101 and is rotatably connected to the auger shaft. The double-screw conveying mechanism 102 pushes the material to move along the conveying part 103 to the discharge port 104, and the discharge port 104 is a cylindrical structure connected to the lower end of the conveying part 103, and the material falls into the feeding spoon 201 below through the discharge port 104.

[0030] In some embodiments of the present application, Figure 2 As shown, the feeding unit 1 also includes: an arch breaking mechanism 106, which has an arch breaking shaft rotatably connected to the feeding part 105. Since the material contains a large amount of acid anhydride, it is easy to absorb moisture and harden, and form a bridge structure by bridging, resulting in the material falling into the auger without being affected by gravity. The arch breaking shaft is used to destroy the bridge structure formed by the material being damp, so that the material can move normally into the conveying part 103.

[0031] In some embodiments of the present application, Figure 2 , 3 As shown, a plurality of arch breaking members 107 are arranged around the arch breaking axis and spaced apart along the axial direction of the arch breaking axis, and the arch breaking members 107 have a pointed structure. The pointed structure can easily pierce the bridge structure, so that the material moves normally.

[0032] In some embodiments of the present application, Figure 2 , 3 As shown, the arch breaking member 107 has an arch breaking portion, which includes two plates arranged at opposite angles and spaced apart, a tip structure is formed at the junction of the front ends of the two plates, and a reinforcing plate is arranged between the two plates, the reinforcing plate is used to improve the structural strength of the arch breaking portion, the lower end of the arch breaking portion is connected to the arch breaking shaft through a connecting plate, the arch breaking shaft is rotatably connected to the hopper 101, the stirring motor is installed on the hopper 101, the output shaft of the stirring motor is connected to the arch breaking shaft, and is used to drive the arch breaking shaft to rotate.

[0033] In some embodiments of the present application, the linear drive mechanism 203 includes: a guide rail, a slider, a first motor, and a lead screw and nut assembly. There are two guide rails and they are installed in parallel on the frame. The slider is slidably set on the guide rail. The slider is equipped with a slide plate. The rotation drive mechanism 202 is installed on the slide plate. The first motor is installed on the frame. The lead screw and the nut assembly are arranged between the first motor and the above-mentioned slider. Specifically, the lead screw is arranged parallel to the guide rail and rotatably installed on the frame. The nut is installed on the slide plate and is connected to the lead screw for transmission. The lead screw and the nut assembly is used to drive the slide plate to move along the guide rail. The translational movement of the feeding spoon 201 is realized through the above-mentioned structure.

[0034] In some embodiments of the present application, the rotation drive mechanism 202 includes: a second motor and a rotating shaft. The second motor is installed on a skateboard. The rotating shaft is connected to the output shaft of the second motor. The rotating shaft is rotatably connected to the skateboard through a bearing seat. The rotation movement of the spoon is achieved through the above structure.

[0035] In some embodiments of the present application, the motor is controlled by a control system. The control system can adopt an industrial computer, a computer, a PLC controller or other equipment with control functions. The control system controls the movement of the above-mentioned motor according to a timing sequence, wherein the second motor rotates 180° at a time to realize the pouring function of the feeding spoon 201.

[0036] When the waste sulfuric acid regeneration cracking feeding device is working, the stirring motor is started, the arch breaking shaft rotates, and the bridge structure formed by the material is destroyed, so that the material can smoothly enter the conveying part 103, and the double-screw conveying mechanism 102 conveys the material to the discharge port 104, and the material falls into the feeding spoon 201 through the discharge port 104. By setting the action time, the feeding spoon 201 is filled with the material, the double-screw conveying mechanism 102 stops feeding, and the linear drive mechanism 203 drives the feeding spoon 201 to enter the furnace port, and the rotary drive mechanism 202 drives the feeding spoon 201 to rotate 180°, and the material falls into the cracking furnace, and then rotates 180° to reset, and moves the feeding spoon 201 to the starting position by backward action, and the purpose of automatically and continuously feeding the cracking furnace is achieved in this reciprocating manner.

[0037] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A waste sulfuric acid regeneration cracking feeding device, characterized in that: include: Feed unit, comprising: A hopper having a conveying portion and a discharge port that are interconnected; A conveying mechanism, comprising a conveying shaft rotatably connected to the conveying portion, wherein the conveying shaft is used to push the material to the discharge port; Feeding unit, comprising: A feeding spoon, located below the discharge port, for receiving the material moving out of the discharge port; A rotary drive mechanism having a rotary portion, the rotary portion being equipped with the feeding spoon; The linear drive mechanism has a displacement portion, the displacement portion is equipped with the rotary drive mechanism, and the linear drive mechanism is used to drive the feeding spoon to enter the furnace mouth.

2. The waste sulfuric acid regeneration cracking feeding device according to claim 1 is characterized in that: The feeding unit also includes: The hopper also has a feeding part connected to the conveying part. The arch breaking mechanism has an arch breaking shaft rotatably connected to the feeding part, and the arch breaking shaft is used to destroy the bridge structure formed by the material.

3. The waste sulfuric acid regeneration cracking feeding device according to claim 2 is characterized in that: A plurality of arch breaking members are arranged around the arch breaking axis and spaced apart along the axial direction of the arch breaking axis, and the arch breaking members have a pointed end structure.

4. The waste sulfuric acid regeneration cracking feeding device according to claim 1, characterized in that: The linear drive mechanism comprises: guide; A slider, slidably disposed on the guide rail, and the rotary drive mechanism is mounted on the slider; First motor; A lead screw and nut assembly is arranged between the first motor and the above-mentioned slider, and the lead screw and nut assembly is used to drive the slider to move along the guide rail.

5. The waste sulfuric acid regeneration cracking feeding device according to claim 4 is characterized in that: The rotary drive mechanism comprises: A second motor connected to the slider; A rotating shaft is connected to the output shaft of the second motor, and the rotating shaft is also rotatably connected to the slider.

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