Novel rotary feeding valve

Abstract

The utility model relates to a novel rotary feeding valve. An existing rotary feeding valve is unsmooth in discharging and too low in rotating speed during low load. Therefore, the novel rotary feeding valve comprises a valve body, a rotor and a variable frequency motor, a feeding port is formed in the upper end of the valve body, the rotor comprises a rotating shaft and N rotating blades evenly distributed on the rotating shaft, the rotating shaft is driven by the variable frequency motor, a material containing groove with a V-shaped section is formed between every two adjacent rotating blades, N is a positive integer and is larger than or equal to 6 and smaller than or equal to 8, and a volume reduction plate is further arranged between every two adjacent rotating blades. And two side edges of the volume reduction plate are respectively connected with the adjacent rotating blades. The novel rotary feeding valve is simple in structure, reliable to use, not prone to material blocking and suitable for various enterprises needing to use the rotary feeding valve, such as a thermal power plant, a coal preparation plant and a cement plant.

Description

Technical Field

[0001] The utility model relates to a novel rotary feeder valve. Background Art

[0002] Most existing thermal power plants are equipped with pulverized coal silos and lime silos, and rotary feeder valves are provided at the bottom discharge ports of the pulverized coal silos and lime silos. Most existing rotary feeder valves (such as CN 221318420 U) generally include a valve body, a rotor, and a variable-frequency motor. The upper end of the valve body is provided with a feed inlet. A rotor is arranged inside the valve body. There is a gap between the rotor and the inner wall of the valve body. The variable-frequency motor is connected to one end of a rotating shaft through a chain drive. A rotating blade is arranged on the rotating shaft.

[0003] The existing rotary feeder valve can achieve the function of continuous feeding through variable-frequency speed regulation control. However, there are the following problems in the actual operation process: First, the rotary feeder valve often runs at a relatively low speed, resulting in high variable-frequency energy consumption and the rotary feeder valve is prone to jamming. Second, affected by the particle size and water content of the material, the material accumulated between adjacent rotating blades near the rotating shaft cannot fall smoothly. When the rotary feeder valve runs at a low speed, the feeding amount is large and small, and the operation is unstable. Summary of the Invention

[0004] The technical problem to be solved by the utility model is how to overcome the above defects of the prior art and provide a novel rotary feeder valve.

[0005] To solve the above technical problem, the novel rotary feeder valve includes a valve body, a rotor, and a variable-frequency motor. The upper end of the valve body is provided with a feed inlet. The rotor includes a rotating shaft and N rotating blades evenly distributed on the rotating shaft. The rotating shaft is driven by the variable-frequency motor. A material-containing groove with a V-shaped cross-section is formed between adjacent rotating blades. N is a positive integer, and 6≤N≤8. The feature is that a volume-reducing plate is further arranged between adjacent rotating blades, and two side edges of the volume-reducing plate are respectively connected to adjacent rotating blades.

[0006] With such a design, on the one hand, the relatively narrow part of the material-containing groove near the rotating shaft is removed, so that the material is not easily accumulated in the material-containing groove. On the other hand, the volume of each material-containing groove is reduced. When transporting the same material, the rotation speed of the variable-frequency motor is correspondingly increased, so that the variable-frequency motor can operate at a more appropriate rotation speed.

[0007] As an optimization, the volume-reducing plate is a flat plate. End plates are respectively arranged at both ends of each volume-reducing plate. Each end plate is an isosceles triangular plate. The bottom edge of the isosceles triangular plate is connected to the end of the adjacent volume-reducing plate. The two waists of the isosceles triangular plate are respectively connected to adjacent rotating blades. An arc-shaped notch is opened at the top angle of the isosceles triangular plate, and the arc-shaped notch is connected to the outer peripheral surface of the rotating shaft. With such a design, the processing is convenient, and the cross-sections of the respective volume-reducing plates are respectively located on one side of a regular N-1-sided polygon.

[0008] As an optimization, the volume reduction plate is an arc-shaped plate. End plates are respectively provided at both ends of each volume reduction plate. Each end plate is an isosceles sector plate. The arc-shaped side of the isosceles sector plate is connected to the end of the adjacent volume reduction plate. The two waists of the isosceles sector plate are respectively connected to the adjacent rotating blades. A circular arc-shaped notch is provided at the top of the isosceles sector plate and is connected to the outer peripheral surface of the rotating shaft through the circular arc-shaped notch. As an optimization, designed in this way, it is convenient for processing, and the cross-sections of the volume reduction plates can approximately form a circle.

[0009] The novel rotary feeder valve has a simple structure, reliable use, and is not easy to clog, and is suitable for various enterprises such as thermal power plants, coal preparation plants, and cement plants that need to use rotary feeder valves. Brief Description of the Drawings

[0010] The following further describes the novel rotary feeder valve of the present invention in conjunction with the drawings:

[0011] Figure 1 is a three-dimensional structural schematic diagram of the volume reduction plate and its end plates at both ends in the first embodiment of the novel rotary feeder valve;

[0012] Figure 2 is an end view structural schematic diagram of the rotor in the first embodiment of the novel rotary feeder valve (the line of sight direction coincides with the axis of the rotating shaft);

[0013] Figure 3 is a three-dimensional structural schematic diagram of the volume reduction plate and its end plates at both ends in the second embodiment of the novel rotary feeder valve;

[0014] Figure 4 is an end view structural schematic diagram of the rotor in the second embodiment of the novel rotary feeder valve (the line of sight direction coincides with the axis of the rotating shaft).

[0015] In the figure: 1 is the rotating shaft, 2 is the rotating blade, 3 is the material receiving groove, 4 is the volume reduction plate, 5 is the end plate, and 6 is the circular arc-shaped notch. Specific Embodiments

[0016] Embodiment 1: As Figure 1 、 2 shown, the novel rotary feeder valve includes a valve body (not shown in the figure), a rotor, and a frequency conversion motor (not shown in the figure). The upper end of the valve body is provided with a feed inlet. The rotor includes a rotating shaft 1 and N rotating blades 2 evenly distributed on the rotating shaft 1. The rotating shaft 1 is driven by a frequency conversion motor. A material receiving groove 3 with a V-shaped cross-section is formed between adjacent rotating blades 2. N is a positive integer, and 6 ≤ N ≤ 8. It is characterized in that: a volume reduction plate 4 is further provided between adjacent rotating blades 2, and both sides of the volume reduction plate 4 are respectively connected to the adjacent rotating blades 2.

[0017] The volume reduction plate 4 is a flat plate. End plates 5 are respectively arranged at both ends of each volume reduction plate 4. Each end plate 5 is an isosceles triangle plate. The base of the isosceles triangle plate is connected to the end of the adjacent volume reduction plate 4. The two waists of the isosceles triangle plate are respectively connected to the adjacent rotating blades 2. An arc-shaped notch 6 is formed at the top angle of the isosceles triangle plate and is connected to the outer peripheral surface of the rotating shaft through the arc-shaped notch 6.

[0018] Embodiment 2: As Figure 3 , 4 shown, the volume reduction plate 4 of the novel rotary feeder valve is an arc-shaped plate. End plates 5 are respectively arranged at both ends of each volume reduction plate 4. Each end plate 5 is an isosceles sector plate. The arc-shaped side of the isosceles sector plate is connected to the end of the adjacent volume reduction plate 4. The two waists of the isosceles sector plate are respectively connected to the adjacent rotating blades. An arc-shaped notch 6 is arranged at the top of the isosceles sector plate and is connected to the outer peripheral surface of the rotating shaft 1 through the arc-shaped notch 6. The remaining structures are as shown in Embodiment 1 and are omitted.

Claims

1. A novel rotary feeding valve, comprising a valve body, a rotor, and a variable frequency motor, wherein a feed port is arranged at the upper end of the valve body, the rotor comprises a rotating shaft and N rotating blades evenly distributed on the rotating shaft, the rotating shaft is driven by the variable frequency motor, and a material containing groove with a V-shaped cross section is formed between adjacent rotating blades, N is a positive integer, and 6≤N≤8, and is characterized in that: A volume reduction plate is also provided between adjacent rotor blades, and two side edges of the volume reduction plate are respectively connected to the adjacent rotor blades.

2. The novel rotary feeder valve according to claim 1 is characterized in that: The volume reduction plate is a flat plate, and each of the two ends of the volume reduction plate is respectively provided with an end plate, and each end plate is an isosceles triangle plate, the bottom edge of the isosceles triangle plate is connected to the end of the adjacent volume reduction plate, and the two waists of the isosceles triangle plate are respectively connected to the adjacent rotor blades, and an arc-shaped notch is opened on the top angle of the isosceles triangle plate, and the isosceles triangle plate is connected to the outer peripheral surface of the rotating shaft through the arc-shaped notch.

3. The novel rotary feeder valve according to claim 1 is characterized in that: The volume reduction plate is an arc-shaped plate, and each of the two ends of the volume reduction plate is respectively provided with an end plate, and each end plate is an isosceles fan-shaped plate. The arc-shaped edge of the isosceles fan-shaped plate is connected to the end of the adjacent volume reduction plate, and the two waists of the isosceles fan-shaped plate are respectively connected to the adjacent rotating blades. The top of the isosceles fan-shaped plate is provided with an arc-shaped notch, and is connected to the outer peripheral surface of the rotating shaft through the arc-shaped notch.

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