Efficient and energy-saving hot air dewatering, drying and calcining system equipment

Abstract

The utility model provides efficient energy-saving hot air dehydration drying and calcining system equipment which comprises an inner kiln body, an inner layer space is arranged in the inner kiln body, a feeding port is formed in one end of the inner kiln body, and a discharging port and an air inlet are formed in the other end of the inner kiln body; the outer kiln body is arranged on the peripheral face of the inner kiln body in a sleeving mode, an outer layer space is defined by the outer kiln body and the outer wall of the inner kiln body, a through hole enabling the inner layer space to be communicated with the outer layer space is formed in the side wall, close to the feeding port, of the inner kiln body, and an air outlet is formed in the end, close to the air inlet, of the outer kiln body; according to the scheme, different types of gypsum powder can be produced at the same time according to requirements, various production requirements are met, waste heat of the rotary kiln is fully utilized, an additional heating and calcining device is not needed, and high efficiency, energy conservation and carbon reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum processing, in particular to a high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment. Background Art

[0002] At present, the main direction of expanding the resource utilization rate of phosphogypsum is to produce gypsum building materials using phosphogypsum. The first step in producing gypsum building materials using phosphogypsum is to calcine and dehydrate the phosphogypsum to obtain gypsum powder.

[0003] Patent CN211445547U provides a rapid dehydration device for phosphogypsum, which relates to the technical field of phosphogypsum processing devices. The rapid dehydration device for phosphogypsum includes a dehydration box, a driving motor is fixed at the bottom center of the dehydration box by bolts, and a rotating shaft is rotatably arranged at the output end of the driving motor, and the end of the rotating shaft away from the driving motor extends into the dehydration box, and a spiral blade is welded on the outer wall of the rotating shaft, and a crushing blade is evenly welded on the outer side of the spiral blade. The rapid dehydration device for phosphogypsum uses a protrusion and a heating component to heat the phosphogypsum to evaporate water. The driving motor drives the spiral blade to rotate through the rotating shaft. The phosphogypsum at the bottom will move upward under the action of the spiral blade, and the phosphogypsum at the top will automatically fill downward, so that the phosphogypsum is evenly heated, which speeds up the dehydration speed of the phosphogypsum. When the spiral blade rotates, it will drive the crushing guide blade to crush the phosphogypsum to avoid agglomeration of the phosphogypsum and ensure the dehydration effect of the phosphogypsum.

[0004] However, the current technical solution has the following problems: it completely relies on the heating component to provide thermal energy, and the energy utilization efficiency is low. Utility Model Content

[0005] In view of this, it is necessary to provide an efficient and energy-saving hot gas dehydration drying and calcining system equipment, which can utilize the high-temperature gas generated by other equipment to improve the utilization rate of thermal energy.

[0006] A highly efficient and energy-saving hot air dehydration drying and calcining system equipment, comprising an inner kiln body with an inner space, a feed inlet at one end of the inner kiln body, and a discharge port and an air inlet at the other end;

[0007] The outer kiln body is sleeved on the outer circumference of the inner kiln body and enclosed with the outer wall of the inner kiln body to form an outer space. A through hole is opened on the side wall of the inner kiln body close to the feed port to connect the inner space with the outer space. An air outlet is opened on one end of the outer kiln body close to the air inlet.

[0008] Optionally, it further comprises a pushing assembly, which is fixed to one end of the inner kiln body close to the feed port, and a pushing end of the pushing assembly extends into the inner kiln body to push the material to move toward the discharge port.

[0009] Optionally, the pushing assembly includes a rotating motor and a spiral propulsion belt, the rotating motor is fixed at one end of the inner kiln body close to the feed port, the rotatable end of the rotating motor extends into the inner kiln body, and the spiral propulsion belt is spiral-shaped, arranged in the inner kiln body and fixed to the rotatable end of the rotating motor.

[0010] Optionally, the spiral propulsion belt is provided with a spirally arranged pouring plate.

[0011] Optionally, one end of the pouring plate is fixed to the inner wall of the spiral propulsion belt, and the other end of the pouring plate is bent to form a hook-shaped portion.

[0012] Optionally, a filter screen for filtering dust is provided at the through hole.

[0013] Optionally, a plurality of filter rings are provided on the inner wall of the outer kiln body, the outer ring surface of the filter ring is fixed to the inner wall of the outer kiln body, and the inner ring surface of the filter ring is fixed to the outer wall of the inner kiln body. The filter rings can filter the high-temperature gas in the outer space step by step.

[0014] Optionally, the filter ring body and the filter mesh are filled with silicon dioxide.

[0015] Optionally, a heat insulation layer is provided on the outer surface of the outer kiln body.

[0016] Optionally, the inner kiln body is tilted, with the end where the discharge port is located being lower, and the end where the feed port is located being higher.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides an efficient and energy-saving hot gas dehydration drying and calcination system equipment, including an inner kiln body and an outer kiln body, wherein the inner kiln body has an inner space, a feed port is provided at one end of the inner kiln body, and a discharge port and an air inlet are provided at the other end; the outer kiln body is sleeved on the outer peripheral surface of the inner kiln body, and is surrounded by the outer wall of the inner kiln body to form an outer space, a through hole is provided on the side wall of the inner kiln body close to the feed port to connect the inner space with the outer space, and an air outlet is provided on one end of the outer kiln body close to the air inlet, and the material to be processed enters from the feed port and moves to the discharge port, and the high-temperature gas enters from the air inlet and moves toward the feed port, and the material to be processed is heated at high temperature to dehydrate and dry it, and the high-temperature gas then passes through the through hole into the outer space and moves toward the air outlet, and heats the inner kiln body, and then is discharged from the air outlet. On the one hand, the high-temperature gas heats and dries the material, and the residual heat is used to keep the inner kiln body 1 warm, so as to achieve efficient use of thermal energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0020] Figure 1 It is a module schematic diagram of the utility model high-efficiency energy-saving hot gas dehydration drying and calcining system equipment;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the middle pouring plate;

[0022] Among them: 1-inner kiln body, 11-feeding port, 12-discharging port, 13-air inlet, 14-filter screen, 2-outer kiln body, 21-air outlet, 22-filter ring body, 3-pushing assembly, 31-rotating motor, 32-screw propulsion belt, 4-pouring plate. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0024] like Figure 1-2 As shown, an embodiment of the utility model provides a high-efficiency and energy-saving hot air dehydration drying and calcining system equipment, including an inner kiln body 1 and an outer kiln body 2, the inner kiln body 1 having an inner space, a feed port 11 is provided on one end of the inner kiln body 1, and a discharge port 12 and an air inlet 13 are provided on the other end; the outer kiln body 2 is sleeved on the outer circumferential surface of the inner kiln body 1, and is surrounded by the outer wall of the inner kiln body 1 to form an outer space, a through hole is provided on the side wall of the inner kiln body 1 near the feed port 11 to connect the inner space with the outer space, and an air outlet 21 is provided on one end of the outer kiln body 2 near the air inlet 13.

[0025] The utility model provides a high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment, comprising an inner kiln body 1 and an outer kiln body 2. The inner kiln body 1 has an inner space, one end of the inner kiln body 1 is provided with a feed port 11, and the other end is provided with a discharge port 12 and an air inlet 13; the outer kiln body 2 is sleeved on the outer circumference of the inner kiln body 1, and is surrounded by the outer wall of the inner kiln body 1 to form an outer space, and the side wall of the inner kiln body 1 close to the feed port 11 is provided with a material outlet 12 and an air inlet 13. The outer kiln body 2 is provided with a through hole connected to the outer space, and an outlet 21 is provided on one end of the outer kiln body 2 close to the air inlet 13. The material to be processed enters from the feed inlet 11 and moves to the outlet 12. The high-temperature gas enters from the air inlet 13 and moves toward the feed inlet 11, and heats the material to be processed at high temperature to dehydrate and dry it. The high-temperature gas then passes through the through hole into the outer space and moves toward the outlet 21, heating the inner kiln body 1, and then is discharged from the outlet 21. On the one hand, the high-temperature gas heats and dries the material, and the residual heat is used to keep the inner kiln body 1 warm, thereby realizing efficient use of thermal energy.

[0026] Furthermore, in order to facilitate the movement of the material in the inner kiln body 1 toward the discharge port 12, in some feasible embodiments, the inner kiln body 1 is tilted, with the end with the discharge port 12 being lower and the end with the feed port 11 being higher. The material fed into the inner kiln body 1 moves toward the discharge port 12 under the action of gravity.

[0027] In this embodiment, a pushing assembly 3 is further included. The pushing assembly 3 is fixed to one end of the inner kiln body 1 close to the feed port 11 . The pushing end of the pushing assembly 3 extends into the inner kiln body 1 to push the material toward the discharge port 12 .

[0028] Furthermore, the pushing assembly 3 includes a rotating motor 31 and a spiral propulsion belt 32. The rotating motor 31 is fixed to one end of the inner kiln body 1 close to the feed port 11. The rotatable end of the rotating motor 31 extends into the inner kiln body 1. The spiral propulsion belt 32 is spiral-shaped, arranged in the inner kiln body 1 and fixed to the rotatable end of the rotating motor 31. The rotatable end of the rotating motor 31 rotates, driving the spiral propulsion belt 32 to rotate, thereby pushing the material in the inner kiln body 1 to move toward the discharge port 12.

[0029] Furthermore, a pouring plate 4 arranged in a spiral shape is provided on the spiral propulsion belt 32. When the spiral propulsion belt 321 rotates, the pouring plate 32 is driven to guide the material to move in the inner kiln body 1.

[0030] Furthermore, one end of the pouring plate 4 is fixed to the inner wall of the spiral propulsion belt 32, and the other end of the pouring plate 4 is bent to form a hook-shaped portion. The purpose of this arrangement is that the pouring plate 4 can scoop up the material at the bottom and rotate it to the top for throwing, which can solve the problem of material getting stuck and blocked at the bottom, and can also enhance the heat exchange efficiency of the material.

[0031] Furthermore, a plurality of pouring plates 4 are also provided on the inner wall of the inner kiln body 1, and the pouring plates 4 of the inner kiln body 1 are arranged in a spiral.

[0032] Specifically, the through hole is provided with a filter 14 for filtering dust. Dust in the material may pass through the through hole driven by the high-temperature gas and enter the outer space; therefore, the through hole is provided with a filter 14 for filtering dust, which can filter the dust in the high-temperature gas.

[0033] Furthermore, the filter screen 14 is filled with silicon dioxide, which is resistant to high temperatures and has a porous surface, and can effectively adsorb dust.

[0034] Specifically, a plurality of filter ring bodies 22 are provided on the inner wall of the outer kiln body 2, the outer ring surface of the filter ring body 22 is fixed to the inner wall of the outer kiln body 2, and the inner ring surface of the filter ring body 22 is fixed to the outer wall of the inner kiln body 1. The filter ring body 22 can filter the high-temperature gas in the outer space step by step. The filter ring body 22 is filled with silicon dioxide, which is resistant to high temperatures and has a porous surface, and can effectively adsorb dust.

[0035] Furthermore, a heat insulating layer is provided on the outer surface of the outer kiln body 2 to prevent heat from escaping.

[0036] The beneficial effects of the utility model are:

[0037] The utility model provides a high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment, comprising an inner kiln body 1 and an outer kiln body 2. The inner kiln body 1 has an inner space, one end of the inner kiln body 1 is provided with a feed port 11, and the other end is provided with a discharge port 12 and an air inlet 13; the outer kiln body 2 is sleeved on the outer circumference of the inner kiln body 1, and is surrounded by the outer wall of the inner kiln body 1 to form an outer space, and the side wall of the inner kiln body 1 close to the feed port 11 is provided with a material outlet 12 and an air inlet 13. The outer kiln body 2 is provided with a through hole connected to the outer space, and an outlet 21 is provided on one end of the outer kiln body 2 close to the air inlet 13. The material to be processed enters from the feed inlet 11 and moves to the outlet 12. The high-temperature gas enters from the air inlet 13 and moves toward the feed inlet 11, and heats the material to be processed at high temperature to dehydrate and dry it. The high-temperature gas then passes through the through hole into the outer space and moves toward the outlet 21, heating the inner kiln body 1, and then is discharged from the outlet 21. On the one hand, the high-temperature gas heats and dries the material, and the residual heat is used to keep the inner kiln body 1 warm, thereby realizing efficient use of thermal energy.

[0038] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A highly efficient and energy-saving hot air dehydration drying and calcining system equipment, characterized in that: include: An inner kiln body has an inner space, one end of the inner kiln body is provided with a feed inlet, and the other end of the inner kiln body is provided with a discharge port and an air inlet; The outer kiln body is sleeved on the outer circumference of the inner kiln body and enclosed with the outer wall of the inner kiln body to form an outer space. A through hole is opened on the side wall of the inner kiln body close to the feed port to connect the inner space with the outer space. An air outlet is opened on one end of the outer kiln body close to the air inlet.

2. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 1 is characterized in that: It also includes a pushing assembly, which is fixed to one end of the inner kiln body close to the feed port, and a pushing end of the pushing assembly extends into the inner kiln body to push the material to move toward the discharge port.

3. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 2 is characterized in that: The pushing assembly includes a rotating motor and a spiral propulsion belt. The rotating motor is fixed to one end of the inner kiln body close to the feed port, and the rotatable end of the rotating motor extends into the inner kiln body. The spiral propulsion belt is spiral-shaped, arranged in the inner kiln body and fixed to the rotatable end of the rotating motor.

4. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 3 is characterized in that: The spiral propulsion belt is provided with a pouring plate arranged in a spiral shape.

5. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 4, characterized in that: One end of the pouring plate is fixed to the inner wall of the spiral propulsion belt, and the other end of the pouring plate is bent to form a hook-shaped portion.

6. The high-efficiency and energy-saving hot air dehydration drying and calcining system equipment according to claim 5, characterized in that: The through hole is provided with a filter screen for filtering dust.

7. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 6, characterized in that: A plurality of filter rings are arranged on the inner wall of the outer kiln body, the outer ring surface of the filter ring is fixed to the inner wall of the outer kiln body, the inner ring surface of the filter ring is fixed to the outer wall of the inner kiln body, and the filter ring can filter the high-temperature gas in the outer space step by step.

8. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 7, characterized in that: The filter ring body and the filter net are filled with silicon dioxide.

9. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 7, characterized in that: A heat insulation layer is arranged on the outer surface of the outer kiln body.

10. The high-efficiency and energy-saving hot gas dehydration drying and calcining system equipment according to claim 1, characterized in that: The inner kiln body is tilted, with the end where the discharge port is located lower, and the end where the feed port is located higher.

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