Phosphogypsum preheating furnace

Abstract

The utility model relates to the field of ardealite processing, in particular to an ardealite preheating furnace which comprises a furnace inner wall, a furnace outer wall, a conveying assembly, a feeding assembly, a base and a supporting block, and the conveying assembly comprises a driving motor, a rotating shaft, a sealing cover, a motor base, a spiral blade and a conveying plate. Then phosphogypsum is added into the inner wall of the furnace through a feeding assembly on the outer wall of the furnace, then a driving motor on a motor base is started, and the driving motor drives a rotating shaft to rotate and drives a spiral blade to rotate at the same time, so that the phosphogypsum is conveyed to the inner wall of the furnace under the action of the spiral blade and a conveying plate; and the phosphogypsum is pushed to be conveyed to one side of the sealing cover, so that the conveying efficiency of the phosphogypsum is improved.

Description

Technical Field

[0001] The utility model relates to the field of phosphogypsum processing, in particular to a phosphogypsum preheating furnace. Background Art

[0002] Phosphogypsum is a type of industrial by-product gypsum and a by-product of the products required by phosphorus chemical companies. For a long time, due to its complex composition and high water content, phosphogypsum cannot be directly used in other industries. As a result, a large backlog of inventory has been caused, which has put great pressure on environmental protection. With technological advances, a processing method for phosphogypsum has been developed. Through pretreatment, calcination, reduction, and base preparation of phosphogypsum, phosphogypsum is converted into building gypsum, which has been widely used in construction.

[0003] In the prior art, a patent with publication number CN207175794U discloses a phosphogypsum preheating furnace. Phosphogypsum with a high moisture content enters the preheating furnace from one end of the furnace body, that is, enters the inner cavity of the furnace inner wall. The control system instructs the microwave generator to work and emit microwaves to heat and evaporate the free water in the phosphogypsum. Due to the use of plastic furnace inner walls and lifting plates, microwaves can smoothly penetrate the furnace inner walls and lifting plates and only act on the phosphogypsum, reducing energy waste. The phosphogypsum entering the furnace inner wall flies inside the furnace inner wall under the action of the lifting plate, and at the same time moves from one end to the other end, and is fully heated.

[0004] In the above method, a lifting plate is used to move the phosphogypsum on the inner wall of the furnace from one end to the other end. Relying only on the lifting plate to make the phosphogypsum fly inside the inner wall of the furnace slows down the efficiency of moving the phosphogypsum to the other end. Utility Model Content

[0005] The purpose of the utility model is to provide a phosphogypsum preheating furnace, which aims to solve the problem in the prior art that a lifting plate is used to move the phosphogypsum on the inner wall of the furnace from one end to the other end, and the phosphogypsum is only moved to the other end by the lifting plate.

[0006] To achieve the above-mentioned purpose, the utility model provides a phosphogypsum preheating furnace, comprising a furnace inner wall and a furnace outer wall, wherein the furnace inner wall is connected to the furnace inner wall by a connecting element, and further comprising a conveying assembly, a feeding assembly, a base and a support block, wherein the support block is fixedly connected to the furnace outer wall and is located on one side of the furnace outer wall, the base is fixedly connected to the support block and is located on a side of the support block away from the furnace outer wall, the conveying assembly is located above the base, and the feeding assembly is located on a side of the furnace outer wall away from the support block.

[0007] The conveying assembly includes a driving motor, a rotating shaft, a sealing cover, a motor base, a spiral blade, a conveying plate and a bearing ring. The motor base is fixedly connected to the base and is located on one side of the base. The driving motor is fixedly connected to the motor base and is located on a side of the motor base away from the base. The rotating shaft is fixedly connected to the driving motor and is located on one side of the driving motor. The spiral blade is fixedly connected to the rotating shaft and is located on the outer wall of the rotating shaft. The conveying plate is fixedly connected to the spiral blade and is located between the spiral blades. The bearing ring is fixedly connected to the rotating shaft and is located on a side of the rotating shaft away from the driving motor. The sealing cover is fixedly connected to the bearing ring and is located on a side of the bearing ring away from the rotating shaft, and the sealing cover is fixedly connected to the outer wall of the furnace.

[0008] In which, the conveying assembly also includes a fixed cover and a sealing bearing. The fixed cover is fixedly connected to the outer wall of the furnace and is located on the side of the outer wall of the furnace away from the sealing cover. The sealing bearing is fixedly connected to the fixed cover and is located on one side of the fixed cover, and the rotating shaft is fixedly connected to the sealing bearing.

[0009] In which, the feeding assembly includes a feeding pipe, a mounting plate, an electric push rod and an insert plate. The feeding pipe is fixedly connected to the outer wall of the furnace and is located on the side of the outer wall of the furnace away from the support block. The mounting plate is fixedly connected to the feeding pipe and is located on one side of the feeding pipe. The electric push rod is fixedly connected to the mounting plate and is located on one side of the mounting plate. The insert plate is fixedly connected to the electric push rod and is located on one side of the electric push rod, and the insert plate is slidably connected to the feeding pipe.

[0010] Wherein, the feeding assembly further includes an inclined plate, which is fixedly connected to the mounting plate and is located on a side of the mounting plate away from the electric push rod, and the other end of the inclined plate is fixedly connected to the feeding pipe.

[0011] Wherein, it also includes a discharge pipe, which is fixedly connected to the outer wall of the furnace and is located on a side of the outer wall of the furnace close to the support block.

[0012] The utility model provides a phosphogypsum preheating furnace, comprising a furnace inner wall, a furnace outer wall, a conveying assembly, a feeding assembly, a base and a supporting block. The conveying assembly comprises a driving motor, a rotating shaft, a sealing cover, a motor seat, a spiral blade and a conveying plate. The temperature in the furnace inner wall is first increased, and then the phosphogypsum is added to the furnace inner wall through the feeding assembly on the furnace outer wall. Then, the driving motor on the motor seat is started, and the driving motor rotates the rotating shaft and also rotates the spiral blade, so that the phosphogypsum is pushed to one side of the sealing cover for conveying under the action of the spiral blade and the conveying plate, thereby improving the conveying efficiency of the phosphogypsum. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 The utility model is a structural schematic diagram of a phosphogypsum preheating furnace provided by the utility model.

[0015] Figure 2 This is a main view of a phosphogypsum preheating furnace provided by the utility model.

[0016] Figure 3 This is a right view of a phosphogypsum preheating furnace provided by the utility model.

[0017] Figure 4 The utility model provides Figure 3 Cross-sectional view in the AA direction.

[0018] 101-furnace inner wall, 102-furnace outer wall, 103-conveying assembly, 104-feeding assembly, 105-base, 106-support block, 107-discharging pipe, 108-driving motor, 109-rotating shaft, 110-sealing cover, 111-motor base, 112-spiral blade, 113-conveying plate, 114-bearing ring, 115-fixed cover, 116-sealed bearing, 117-feeding pipe, 118-mounting plate, 119-electric push rod, 120-insert plate, 121-inclined plate, 122-sliding hole. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] First embodiment:

[0021] See also Figures 1 to 4 ,in Figure 1 This is a structural diagram of a phosphogypsum preheating furnace provided by the utility model. Figure 2 This is the main view of a phosphogypsum preheating furnace provided by the utility model. Figure 3 This is a right view of a phosphogypsum preheating furnace provided by the utility model. Figure 4 The utility model provides Figure 3 Cross-sectional view in the AA direction.

[0022] The utility model provides a phosphogypsum preheating furnace, comprising a furnace inner wall 101, a furnace outer wall 102, a conveying assembly 103, a feeding assembly 104, a base 105, a support block 106, and a discharge pipe 107. The conveying assembly 103 comprises a driving motor 108, a rotating shaft 109, a sealing cover 110, a motor base 111, a spiral blade 112, a conveying plate 113, a bearing ring 114, a fixing cover 115, and a sealing bearing 116. The feeding assembly 104 comprises a feeding pipe 117, a mounting plate 118, an electric push rod 119, an insert plate 120, and an inclined plate 121. The above-mentioned solution solves the problem in the prior art of using a lifting plate to move the phosphogypsum on the furnace inner wall from one end to the other end. The problem that the phosphogypsum is moved to the other end by relying solely on the lifting plate to make the phosphogypsum fly inside the furnace inner wall is slow.

[0023] According to this specific embodiment, the furnace inner wall 101 is connected to the furnace inner wall 101 by a connecting element, the support block 106 is fixedly connected to the furnace outer wall 102 and is located on one side of the furnace outer wall 102, the base 105 is fixedly connected to the support block 106 and is located on the side of the support block 106 away from the furnace outer wall 102, the conveying assembly 103 is located above the base 105, the feeding assembly 104 is located on the side of the furnace outer wall 102 away from the support block 106, and the bottom The seat 105 and the support block 106 are used to support the conveying component 103. The feeding component 104 is used to automatically open and close the furnace body, thereby facilitating the addition of phosphogypsum. At the same time, the furnace body is closed to facilitate maintaining or quickly increasing the temperature in the furnace inner wall 101, thereby facilitating the drying of the phosphogypsum. The conveying component 103 is used to convey the phosphogypsum in the furnace inner wall 101, convey the phosphogypsum to the other end, and stir the phosphogypsum to fully dry the phosphogypsum.

[0024] The motor seat 111 is fixedly connected to the base 105 and is located on one side of the base 105. The drive motor 108 is fixedly connected to the motor seat 111 and is located on a side of the motor seat 111 away from the base 105. The rotating shaft 109 is fixedly connected to the drive motor 108 and is located on one side of the drive motor 108. The spiral blades 112 are fixedly connected to the rotating shaft 109 and are located on the outer wall of the rotating shaft 109. The conveying plate 113 is fixedly connected to the spiral blades 112 and is located between the spiral blades 112. The bearing ring 114 is fixedly connected to the rotating shaft 109 and is located on a side of the rotating shaft 109 away from the drive motor 108. The sealing cover 110 is fixedly connected to the bearing ring 114 and is located on a side of the bearing ring 114 away from the rotating shaft 109. The sealing cover 110 is fixedly connected to the outer wall 102 of the furnace. The motor base 111 is used to support the driving motor 108. First, the temperature in the furnace inner wall 101 is increased by the microwave generator in the prior art, and then the phosphogypsum is added to the furnace inner wall 101 through the feeding assembly 104 on the furnace outer wall 102. Then the driving motor 108 is started, and the driving motor 108 drives the rotating shaft 109 to rotate, thereby also rotating the spiral blade 112 on the rotating shaft 109, thereby pushing the phosphogypsum to move toward the sealing cover 110. At the same time, when the spiral blade 112 rotates, the conveying plate 113 also rotates, and after bringing the phosphogypsum to a certain height, it falls onto the furnace inner wall 101, causing the phosphogypsum to fly in the furnace inner wall 101 and fully heating the phosphogypsum, thereby achieving a drying effect. In this way, the drying of the phosphogypsum is achieved while improving the conveying efficiency of the phosphogypsum in the furnace inner wall 101.

[0025] At the same time, the fixed cover 115 is fixedly connected to the outer wall 102 of the furnace and is located on the side of the outer wall 102 of the furnace away from the sealing cover 110. The sealing bearing 116 is fixedly connected to the fixed cover 115 and is located on one side of the fixed cover 115. The rotating shaft 109 is fixedly connected to the sealing bearing 116. The fixed cover 115 is used to achieve the closure of the furnace body, ensure the temperature in the inner wall 101 of the furnace, and improve the drying effect. The sealing bearing 116 is used to avoid driving the fixed cover 115 to rotate when the rotating shaft 109 is rotated.

[0026] Among them, the feed pipe 117 is fixedly connected to the outer wall 102 of the furnace and is located on the side of the outer wall 102 of the furnace away from the support block 106, the mounting plate 118 is fixedly connected to the feed pipe 117 and is located on one side of the feed pipe 117, the electric push rod 119 is fixedly connected to the mounting plate 118 and is located on one side of the mounting plate 118, the plug plate 120 is fixedly connected to the electric push rod 119 and is located on one side of the electric push rod 119, and the plug plate 120 is slidably connected to the feed pipe 117, and a sliding hole 122 is provided on the feed pipe 117 to facilitate the plug plate 120 to slide in the feed pipe 117, the mounting plate 118 is used to support the electric push rod 119, start the electric push rod 119, and make the push rod retract and retract, so that the plug plate 120 can slide in the feed pipe 117, thereby realizing the closed and opened states of the feed pipe 117.

[0027] Secondly, the inclined plate 121 is fixedly connected to the mounting plate 118 and is located on the side of the mounting plate 118 away from the electric push rod 119. The other end of the inclined plate 121 is fixedly connected to the feed pipe 117. The inclined plate 121 is used to improve the stability of the mounting plate 118.

[0028] In addition, the discharge pipe 107 is fixedly connected to the furnace outer wall 102 and is located on a side of the furnace outer wall 102 close to the support block 106. The discharge pipe 107 facilitates the collection of the dried phosphogypsum.

[0029] When using a phosphogypsum preheating furnace of this embodiment, the temperature in the furnace inner wall 101 is first increased, and then the electric push rod 119 is started to extend and retract, and the insert plate 120 is slid along the sliding hole 122 to open the feed pipe 117, and then the phosphogypsum is poured into the feed pipe 117, and the phosphogypsum is added to the furnace inner wall 101, and then the drive motor 108 is started, and the drive motor 108 drives the rotating shaft 109 to rotate, thereby also causing the spiral blade 112 on the rotating shaft 109 to rotate. The spiral blade 112 rotates to push the phosphogypsum toward the sealing cover 110. At the same time, when the spiral blade 112 rotates, the conveying plate 113 also rotates, and after the phosphogypsum is brought to a certain height, it falls onto the inner wall 101 of the furnace, so that the phosphogypsum flies in the inner wall 101 of the furnace and is fully heated. When the phosphogypsum rotates with the spiral blade 112, the dried phosphogypsum is conveyed to the discharge pipe 107. In this way, the drying of the phosphogypsum is achieved while improving the conveying efficiency of the phosphogypsum in the inner wall 101 of the furnace.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A phosphogypsum preheating furnace, comprising a furnace inner wall and a furnace outer wall, wherein the furnace inner wall and the furnace outer wall are connected by a connecting element, characterized in that: The furnace further comprises a conveying assembly, a feeding assembly, a base and a support block, wherein the support block is fixedly connected to the outer wall of the furnace and is located on one side of the outer wall of the furnace, the base is fixedly connected to the support block and is located on a side of the support block away from the outer wall of the furnace, the conveying assembly is located above the base, and the feeding assembly is located on a side of the outer wall of the furnace away from the support block. The conveying assembly includes a driving motor, a rotating shaft, a sealing cover, a motor base, a spiral blade, a conveying plate and a bearing ring. The motor base is fixedly connected to the base and is located on one side of the base. The driving motor is fixedly connected to the motor base and is located on a side of the motor base away from the base. The rotating shaft is fixedly connected to the driving motor and is located on one side of the driving motor. The spiral blade is fixedly connected to the rotating shaft and is located on the outer wall of the rotating shaft. The conveying plate is fixedly connected to the spiral blade and is located between the spiral blades. The bearing ring is fixedly connected to the rotating shaft and is located on a side of the rotating shaft away from the driving motor. The sealing cover is fixedly connected to the bearing ring and is located on a side of the bearing ring away from the rotating shaft, and the sealing cover is fixedly connected to the outer wall of the furnace.

2. A phosphogypsum preheating furnace according to claim 1, characterized in that: The conveying assembly also includes a fixed cover and a sealed bearing. The fixed cover is fixedly connected to the outer wall of the furnace and is located on the side of the outer wall of the furnace away from the sealing cover. The sealed bearing is fixedly connected to the fixed cover and is located on one side of the fixed cover, and the rotating shaft is fixedly connected to the sealed bearing.

3. A phosphogypsum preheating furnace according to claim 2, characterized in that: The feeding assembly includes a feeding pipe, a mounting plate, an electric push rod and an insert plate. The feeding pipe is fixedly connected to the outer wall of the furnace and is located on a side of the outer wall of the furnace away from the support block. The mounting plate is fixedly connected to the feeding pipe and is located on one side of the feeding pipe. The electric push rod is fixedly connected to the mounting plate and is located on one side of the mounting plate. The insert plate is fixedly connected to the electric push rod and is located on one side of the electric push rod, and the insert plate is slidably connected to the feeding pipe.

4. A phosphogypsum preheating furnace according to claim 3, characterized in that: The feeding assembly also includes an inclined plate, which is fixedly connected to the mounting plate and located on a side of the mounting plate away from the electric push rod. The other end of the inclined plate is fixedly connected to the feeding pipe.

5. The phosphogypsum preheating furnace according to claim 4, characterized in that: It also includes a discharge pipe, which is fixedly connected to the outer wall of the furnace and is located on a side of the outer wall of the furnace close to the support block.

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