Vortex powder concentrator and cement grinding system

Abstract

The utility model discloses a vortex powder concentrator and a cement grinding system, the vortex powder concentrator comprises a volute, the volute comprises a first shell and a second shell, the first shell and the second shell are symmetrically and spirally arranged, the top of the first shell and the top of the second shell are provided with feed ports, and the tail end of the first shell and the tail end of the second shell are respectively provided with a first air inlet and a second air inlet; the third air inlet is fixed on the side part of the first shell; the fourth air inlet is fixed on the side part of the second shell; the air outlet is formed in the joint of the first shell and the second shell. According to the vortex powder concentrator and the cement grinding system provided by the utility model, the additional air inlets are respectively formed in the two shells which are spirally arranged and are provided with the initial air inlets, so that under the condition that the air inlet amounts of the initial air inlets are different, the air inlet amounts of the additional air inlets are changed; therefore, the situation that local air volume is not uniform in the volute is avoided, and the powder selecting efficiency of the vortex powder selecting machine is guaranteed.

Description

Technical Field

[0001] The utility model relates to an eddy current powder separator and a cement grinding system, belonging to the technical field of powder separators. Background Art

[0002] Eddy current concentrators are commonly used as classifiers in closed-circuit cement grinding systems. A roller press is added to the preceding process to grind the cement clinker. The resulting cement powder is then efficiently separated based on the principle of airflow separation. Typically, an eddy current concentrator utilizes a volute housing with a bladed rotor. Dual air inlets are typically used to ensure uniform air flow.

[0003] However, the dual-inlet design has its drawbacks. Although the dual inlets are symmetrical, they still result in variations in air volume. These variations can lead to localized uneven air volume within the volute, reducing the eddy current classifier's efficiency and increasing its operating time and energy consumption. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide an eddy current classifier and a cement grinding system, so as to ensure the working efficiency of the eddy current classifier and reduce the working energy consumption.

[0005] In one aspect, the present invention provides an eddy current powder separator, comprising:

[0006] The volute comprises a first shell and a second shell arranged symmetrically and spirally, with a feed port at the top, and a first air inlet and a second air inlet at the end of the first shell and the end of the second shell respectively;

[0007] a third air inlet fixed to a side portion of the first housing;

[0008] a fourth air inlet, fixed to a side portion of the second housing;

[0009] An air outlet is provided at the connection between the first shell and the second shell;

[0010] The driving unit is arranged inside the volute and is used to drive the gas and powder to the air outlet.

[0011] Furthermore, a support frame is included, which includes a vertically connected transverse support rod and a longitudinal support rod, which are used to support the first shell and the second shell respectively.

[0012] Furthermore, a first feed inlet and a second feed inlet are evenly opened on the top of the first shell; a third feed inlet and a fourth feed inlet are evenly opened on the top of the second shell;

[0013] The first feed port, the second feed port, the third feed port and the fourth feed port are sealed by a first flange.

[0014] Furthermore, the air outlet is detachably connected to the volute.

[0015] Furthermore, the third air inlet and the fourth air inlet are sealed by a second flange.

[0016] Furthermore, it also includes a driving unit, which is arranged inside the volute and is used to drive the gas and powder to the air outlet;

[0017] The driving unit includes a motor and blades electrically connected to the motor, and is used to transport the powder poured into the feed port to the air outlet.

[0018] On the other hand, the present application also provides a cement grinding system, including the eddy current classifier provided in the first aspect.

[0019] By adopting the above technical solution, the utility model provides a vortex powder classifier and cement grinding system, which respectively opens additional air inlets on two spirally arranged shells with initial air inlets. When there is a difference in the air intake volume of the initial air inlets, the air intake volume of the additional air inlets is changed, thereby avoiding the occurrence of local uneven air volume inside the volute, thereby ensuring the powder selection efficiency of the vortex powder classifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model provides a structural schematic diagram of an eddy current powder separator.

[0021] In the figure: 1. volute; 2. first shell; 3. second shell; 4. first air inlet; 5. second air inlet; 6. third air inlet; 7. fourth air inlet; 8. air outlet; 9. support frame; 10. horizontal support rod; 11. longitudinal support rod; 12. first feed port; 13. second feed port; 14. third feed port; 15. fourth feed port. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below through the accompanying drawings and specific implementation methods.

[0023] like Figure 1 As shown, the utility model provides an eddy current powder separator, comprising:

[0024] The volute 1 comprises a first shell 2 and a second shell 3 arranged symmetrically and spirally, each with a feed port at the top. A first air inlet 4 and a second air inlet 5 are provided at the ends of the first shell 2 and the second shell 3, respectively. It should be noted that in actual use, the volute 1 is quite large (e.g., 4.2m x 13m), so a support frame 9 is required to support the first and second shells 2 and 3. The support frame 9 includes vertically connected transverse support rods 10 and longitudinal support rods 11, which can be fixed with bolts.

[0025] The feed inlets provided on the first shell 2 and the second shell 3 should be evenly opened to promote uniform concentration of cement powder inside the volute 1. For example, a first feed inlet 12 and a second feed inlet 13 are evenly opened on the top of the first shell 2; a third feed inlet 14 and a fourth feed inlet 15 are evenly opened on the top of the second shell 3.

[0026] The first feed port 12 , the second feed port 13 , the third feed port 14 and the fourth feed port 15 include but are not limited to being sealed by a first flange.

[0027] The third air inlet 6 is fixed to the side of the first housing 2;

[0028] The fourth air inlet 7 is fixed to the side of the second housing 3. The opening size of the third and fourth air inlets 6 and 7 can be adjusted to achieve uniform airflow between the first and second housings 2 and 3. The third and fourth air inlets 6 and 7 are sealed, including but not limited to, by a second flange. The dimensions of the third and fourth air inlets 6 and 7 must match the dimensions of the eddy current separator. For example, if the eddy current separator is 4.2m*13m, the dimensions of the third and fourth air inlets 6 and 7 can be set to 250cm*1960cm.

[0029] The air outlet 8 is provided at the junction of the first housing 2 and the second housing 3. The air outlet 8 is typically cylindrical in shape to facilitate the collection of cement powder, and the air outlet 8 is fixedly or detachably connected to the volute 1. However, it should be noted that even with a fixed connection, regular disassembly and maintenance are required to ensure effective collection of cement powder.

[0030] It should be added here that the eddy current powder separator also includes a driving unit, which is arranged inside the volute 1 and is used to drive the gas and powder to the air outlet 8;

[0031] The drive unit includes a motor and blades electrically connected to the motor, which are used to convey cement powder fed into the feed port to the air outlet 8. The powder is obtained by grinding cement clinker through a roller press. The motor drives the blades to rotate, causing air to carry the powder out through the air outlet 8 for collection.

[0032] The utility model provides a vortex powder classifier and cement grinding system, which respectively provide additional air inlets on two spirally arranged shells with initial air inlets. When there is a difference in the air inlet volume of the initial air inlets, the air inlet volume of the additional air inlets is changed, thereby avoiding the occurrence of local uneven air volume inside the volute, thereby ensuring the powder selection efficiency of the vortex powder classifier.

[0033] On this basis, the present application also proposes a cement grinding system, including the eddy current classifier provided in the first aspect, which adopts the same technical concept and solves the same technical problems, which will not be repeated here.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A vortex powder separator, characterized in that: include: The volute (1) comprises a first shell (2) and a second shell (3) arranged symmetrically and spirally, each having a feed port at the top, wherein the ends of the first shell (2) and the second shell (3) are respectively provided with a first air inlet (4) and a second air inlet (5); a third air inlet (6) fixed to a side portion of the first shell (2); a fourth air inlet (7) fixed to a side portion of the second shell (3); An air outlet (8) is provided at the connection between the first shell (2) and the second shell (3).

2. The eddy current powder separator according to claim 1, characterized in that: It also includes a support frame (9), which includes a transverse support rod (10) and a longitudinal support rod (11) connected vertically, and is used to support the first shell (2) and the second shell (3) respectively.

3. The eddy current powder separator according to claim 1, wherein: A first feed port (12) and a second feed port (13) are evenly provided on the top of the first shell (2); a third feed port (14) and a fourth feed port (15) are evenly provided on the top of the second shell (3); The first feed port (12), the second feed port (13), the third feed port (14) and the fourth feed port (15) are sealed by a first flange.

4. The eddy current powder separator according to claim 1, wherein: The air outlet (8) is detachably connected to the volute (1).

5. The eddy current powder separator according to claim 1, characterized in that: The third air inlet (6) and the fourth air inlet (7) are sealed by a second flange.

6. The eddy current powder separator according to claim 1, characterized in that: It also includes a driving unit, which is arranged inside the volute (1) and is used to drive the gas and powder to the air outlet (8); The driving unit comprises a motor and blades electrically connected to the motor, and is used to transport the powder poured into the feed port to the air outlet (8).

7. A cement grinding system, characterized by: The invention comprises the eddy current powder separator according to any one of claims 1 to 6.

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