Fluidized bed roaster with double Roots blowers connected in parallel

Abstract

The utility model discloses a fluidized bed roaster with double Roots blowers connected in parallel, which comprises the fluidized bed roaster, a roaster body of the fluidized bed roaster is communicated with a fan unit through an air supply pipe, the fan unit comprises two Roots blower sets communicated with a buffer box, and each Roots blower set comprises a Roots blower and a motor which are in power connection through a belt. An inlet silencer is arranged on an air inlet in the upper portion of the Roots blower, an outlet silencer is connected to an air outlet in the side portion of the Roots blower through a flange connector, and the outlet silencer is communicated with the buffer box through an elastic flange connector. And a pressure relief unit is arranged on the buffer tank. According to the fluidized bed roaster, an air supply system composed of Roots blowers is improved, so that when the fluidized bed roaster performs desulfurization and other process treatments on ores, the treatment capacity is greatly increased, and the treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of fluidized bed roasters, in particular to a fluidized bed roaster with two Roots blowers connected in parallel. Background Technique

[0002] The blower of the fluidized bed roaster plays a crucial role. It not only forms a fluidized bed layer by providing a stable and controllable air flow, providing the necessary kinetic conditions for the heating, reduction and chemical reactions of the materials in the furnace, but also ensures the uniform distribution of the temperature and pressure in the furnace by precisely adjusting the air volume and air pressure, thereby optimizing the roasting process, improving the production efficiency and product quality. The variable frequency speed regulation technology of the blower further enhances the flexibility and energy saving of this process, allowing the operating state to be adjusted according to real-time production requirements, reducing energy waste and production costs. In addition, the reasonable operation and maintenance of the blower also helps to reduce environmental pollution. By reducing noise and dust emissions, the on-site working environment is improved. At the same time, the smooth start and speed regulation reduce the mechanical impact on the equipment, extend the service life of the blower and related equipment, and improve the reliability and stability of the entire fluidized bed roaster system.

[0003] In the prior art, a fluidized bed furnace for air supply by a Roots blower is disclosed in the utility model with the publication number of CN219283320U. In this system, one Roots blower is used for air supply. However, when roasting processes such as desulfurization of ores are carried out, a larger air volume is required, so the whole fluidized bed roaster needs to be transformed. Content of the Utility Model

[0004] To solve the problems existing in the prior art, the purpose of the utility model is to disclose a fluidized bed roaster with two Roots blowers connected in parallel. By improving the air supply system composed of Roots blowers, when the fluidized bed roaster processes ores such as desulfurization, the processing capacity is greatly increased and the processing efficiency is improved.

[0005] To achieve the above effects, the present application discloses a fluidized bed roaster with two Roots blowers connected in parallel, including a fluidized bed roaster. The furnace body of the fluidized bed roaster is communicated with a blower unit through an air supply pipe. The blower unit includes two groups of Roots blower sets communicated with a buffer tank. Each Roots blower set includes a Roots blower and a motor connected by belt power. An inlet muffler is arranged on the upper inlet of the Roots blower, and an outlet muffler is connected to the side outlet through a flange joint. The outlet muffler is communicated with the buffer tank through an elastic flange joint; a pressure relief unit is arranged on the buffer tank.

[0006] Further, a pressure relief valve is arranged on the flange joint.

[0007] Further, the Roots blower and the motor are fixed on the installation surface through a base.

[0008] Furthermore, the pressure relief unit includes an upper housing connected to the buffer tank. The lower housing is directly threadedly connected to the upper housing. A plug is provided at the lower end of the upper housing, and a cross-shaped guide block is provided at the upper end of the plug. An adjusting pad is provided at the bottom of the lower housing. An adjusting bolt passes through the lower end of the lower housing and enters the lower housing to abut against the lower end of the adjusting pad. A compression spring is provided between the plug and the adjusting pad. A pressure relief hole is provided on the side wall of the lower housing.

[0009] Furthermore, the upper housing of the pressure relief unit is flange-connected to the front end of the buffer tank.

[0010] Furthermore, a maintenance cover is also provided on the upper housing, and the maintenance cover is threadedly connected to the upper housing.

[0011] Furthermore, the buffer tank is a hollow rectangular parallelepiped empty box.

[0012] Furthermore, a slag receiving tank is provided at the bottom of the furnace body of the fluidized bed roaster, and a burner and a feeding unit are provided on the side wall of the furnace body.

[0013] The beneficial effects of the present utility model include:

[0014] The present application discloses a fluidized bed roaster with two Roots blowers connected in parallel. Through the blower unit, two groups of Roots blower sets are transferred and buffered through a buffer tank, and then connected to the fluidized bed roaster through an air supply pipe. Through the setting of this technical solution, first, the upper limit of the air supply volume is expanded. By the method of double-machine parallel connection, the air supply volume is greatly increased. Secondly, the adjustable range of the air supply is expanded, enabling the air supply volume required by the fluidized bed roaster to be adjusted within a larger range, meeting the controllability of oxidative roasting treatment of different minerals. In addition, a pressure relief unit is provided on the buffer tank, which can achieve stable and safe air supply through pressure relief and the buffering of the buffer tank itself for pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the blower unit of the present utility model.

[0018] Figure 3 It is a schematic diagram of the structure of the Roots blower set of the present utility model.

[0019] Figure 4 This is a schematic structural diagram of the pressure relief unit in the preferred embodiment of the present utility model.

[0020] Wherein: 1. Fluidized bed roaster, 2. Air supply pipe, 3. Buffer tank, 4. Belt, 5. Roots blower, 6. Motor, 7. Inlet muffler, 8. Flange joint, 9. Outlet muffler, 10. Elastic flange joint, 11. Pressure relief unit, 12. Pressure relief valve on the flange joint, 13. Base, 14. Slag receiving tank, 15. Burner, 16. Feeding unit, 111. Upper shell, 112. Lower shell, 113. Plug, 114. Cross-shaped guide block, 115. Adjusting cushion block, 116. Adjusting bolt, 117. Compression spring, 118. Pressure relief hole, 119. Maintenance cover. Specific embodiments

[0021] The following will further elaborate on the specific embodiments of the present utility model in the form of combining with the attached drawings. However, the following embodiments only list the relatively preferred embodiments, which only serve to explain and help understand the present utility model, and should not be construed as a limitation to the present utility model.

[0022] Refer to Figures 1-3 , a fluidized bed roaster with two Roots blowers in parallel, including a fluidized bed roaster. The furnace body 1 of the fluidized bed roaster is communicated with the blower unit through an air supply pipe 2. The blower unit includes two groups of Roots blower sets communicated with a buffer tank 3. Each Roots blower set includes a Roots blower 5 and a motor 6 that are power-connected through a belt 4. An inlet muffler 7 is provided at the upper air inlet of the Roots blower, and an outlet muffler 9 is connected to the side air outlet through a flange joint 8. The outlet muffler 9 is communicated with the buffer tank 3 through an elastic flange joint 10; a pressure relief unit 11 is provided on the buffer tank.

[0023] In this technical solution, the furnace body 1 receives the wind transmitted by the air supply pipe 2, thereby realizing uniform heating and fluidization of the materials in the furnace. The blower unit is composed of two groups of Roots blower sets, including a Roots blower 5 and a motor 6 that provides power for it, and they are connected by a belt 4. The wind generated by the blower unit will, under the action of the inlet muffler 7 and the outlet muffler 9, reduce the noise and enter the buffer tank 3 through the elastic flange joint 10, which is responsible for storing and regulating the wind. In addition, the equipment is also equipped with a pressure relief unit 11 and a pressure relief valve 12 on the flange joint to ensure that the system can safely release pressure when the pressure is too high, and ensure the stable operation of the entire system.

[0024] The above-mentioned fluidized bed roaster with two Roots blowers in parallel. Through the blower unit, two groups of Roots blower sets are transferred and buffered through a buffer tank, and then connected to the fluidized bed roaster through an air supply pipe. With the setting of this technical solution, first, the upper limit of the air supply volume is expanded. By the way of parallel connection of two machines, the air supply volume is greatly increased. Second, the adjustable range of the air supply is expanded, enabling the air supply volume required by the fluidized bed roaster to be adjusted within a larger range, meeting the controllability of oxidative roasting treatment for different minerals. In addition, a pressure relief unit is provided on the buffer tank, which can achieve stable and safe air supply through pressure relief and the buffer of the buffer tank itself for pressure. Furthermore, when the fluidized bed roaster is performing processes such as desulfurization of ore, the processing capacity is greatly increased and the processing efficiency is improved.

[0025] More preferably, a pressure relief valve 12 is provided on the flange joint. The setting of the pressure relief valve can further ensure the safety of the Roots blower. The Roots blower 5 and the motor 6 are fixed to the installation surface through the base 13.

[0026] As a preferred embodiment, referring to Figure 4 , the pressure relief unit includes an upper shell 111 connected to the buffer tank. The lower shell 112 is directly threadedly connected to the upper shell 111. A plug 113 is provided at the lower end of the upper shell. A cross-shaped guide block 114 is provided at the upper end of the plug. An adjusting cushion block 115 is provided at the bottom of the lower shell. The adjusting bolt 116 passes through the lower end of the lower shell and enters the lower shell to abut against the lower end of the adjusting cushion block 115. A compression spring 117 is provided between the plug 113 and the adjusting cushion block 115. A pressure relief hole 118 is provided on the side wall of the lower shell.

[0027] During use, the pressure release between the lower shell 112 and the upper shell 111 can be controlled through the adjusting bolt 116 and the compression spring 117, so as to finely adjust the opening degree of the pressure relief hole 118.

[0028] On the basis of the above scheme, preferably, the upper shell 111 of the pressure relief unit is flange-connected to the front end of the buffer tank 3.

[0029] More preferably, a maintenance cover 119 is further provided on the upper shell. The maintenance cover is threadedly connected to the upper shell. The setting of the maintenance cover can facilitate the maintenance of the pressure relief unit.

[0030] Preferably, the buffer tank is a hollow cuboid empty box. The structure of the cuboid empty box can enable it to adapt to a larger air pressure range.

[0031] Generally speaking, like the fluidized bed roaster of the prior art, a slag receiving tank 14 is provided at the bottom of the furnace body 1 of the fluidized bed roaster, and a burner 15 and a feeding unit 16 are provided on the side wall of the furnace body.

[0032] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A fluidized bed roasting furnace with two Roots blowers connected in parallel, characterized in that: The invention comprises a fluidized bed roasting furnace, wherein a furnace body (1) of the fluidized bed roasting furnace is connected to a fan unit via an air supply pipe (2), the fan unit comprises two groups of Roots blower units connected to a buffer box (3), the Roots blower units comprise a Roots blower (5) and a motor (6) connected by a belt (4), an inlet muffler (7) is arranged on the air inlet of the upper part of the Roots blower, an outlet muffler (9) is connected to the air outlet of the side part via a flange joint (8), the outlet muffler (9) is connected to the buffer box (3) via an elastic flange joint (10), and a pressure relief unit (11) is arranged on the buffer box.

2. A fluidized bed roasting furnace with two Roots blowers in parallel according to claim 1, characterized in that: The flange joint is provided with a pressure relief valve (12).

3. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 1, characterized in that: The Roots blower (5) and the motor (6) are fixed on the mounting surface via a base (13).

4. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 1, characterized in that: The pressure relief unit comprises an upper shell (111) connected to the buffer box, a lower shell (112) being directly threadedly connected to the upper shell (111), a block (113) being provided at the lower end of the upper shell, a cross-shaped guide block (114) being provided at the upper end of the block, an adjustment pad (115) being provided at the bottom of the lower shell, an adjustment bolt (116) passing through the lower end of the lower shell and entering the lower shell to abut against the lower end of the adjustment pad (115), a compression spring (117) being provided between the block (113) and the adjustment pad (115), and a pressure relief hole (118) being provided on a side wall of the lower shell.

5. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 4, characterized in that: The upper shell (111) of the pressure relief unit is connected to the front end flange of the buffer box (3).

6. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 4, characterized in that: The upper shell is also provided with an inspection cover (119), and the inspection cover is threadedly connected to the upper shell.

7. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 1, characterized in that: The buffer box is a hollow rectangular box.

8. The fluidized bed roasting furnace with two Roots blowers in parallel according to claim 1, characterized in that: The bottom of the furnace body (1) of the fluidized bed roasting furnace is provided with a slag receiving trough (14), and the side wall of the furnace body is provided with a burner (15) and a feeding unit (16).

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