Double-auger material conveying device in potassium perchlorate production

Abstract

The utility model belongs to the technical field of potassium perchlorate production, and provides a double-auger material conveying device in potassium perchlorate production, which comprises a trough, a first auger, a second auger, a driver, a transmission assembly, a coupling assembly and a controller. The trough is a cuboid trough body, two base angles in the length direction are arc-shaped, and the trough body is divided into two trough cavities by a middle partition plate; the first auger and the second auger are the same in size and shape, spiral twisting pieces and two or three axial straight stirring pieces are arranged on twisting shafts, the twisting shafts are arranged in the two groove cavities in an inverted mode, the twisting shafts are coaxial with the arc-shaped bottom corners of the material grooves respectively, and the two ends of the twisting shafts penetrate through the end plates of the material grooves respectively to be connected with the transmission assembly or the coupling assembly. According to the double-auger material conveying device, by changing the rotating speed and the rotating direction of the first auger and the second auger, the trough can rapidly receive a large number of materials intermittently output by a centrifugal machine, the buffering effect is achieved, the materials can be continuously and evenly output from a discharging port in the bottom of the trough, and the material retention phenomena such as wall hanging and arching do not exist.

Description

Technical Field

[0001] This application belongs to the technical field of potassium perchlorate production, and particularly relates to a double-screw material conveying device in potassium perchlorate production. Background Art

[0002] Currently, in the production of the chemical product potassium perchlorate, there is a process link of dehydration and drying. Usually, a centrifuge is used to discharge the potassium perchlorate crystals, and solid-liquid separation is carried out by centrifugation. Then, the moisture is removed through a drying system to obtain qualified potassium perchlorate products.

[0003] Between the centrifuge and the drying system, devices such as chutes or screw augers are usually used for material conveying. Due to the intermittent discharge of the centrifuge and the particularity of the potassium perchlorate crystal materials, problems such as material sticking to the wall and arching, resulting in discontinuous and unsmooth material conveying, are likely to occur. Summary of the Invention

[0004] This application proposes a double-screw material conveying device in potassium perchlorate production, aiming to solve the problems of material sticking to the wall, arching and other material retention phenomena in the prior art, which lead to discontinuous and unsmooth material conveying.

[0005] To achieve the above object, this application proposes the following technical solutions:

[0006] The double-screw material conveying device described in this application includes a trough, a first screw, a second screw, a driver, a transmission component, a coupling component and a controller;

[0007] The first screw and the second screw have the same size and shape. Spiral blades are arranged on the screw shafts, and 2 or 3 axial straight stirring blades are evenly distributed along the outer circumference of one end of the screw shaft;

[0008] The trough is a rectangular trough body, and the two bottom corners in the length direction are arc-shaped. A middle partition plate is arranged along the length direction in the middle of the trough bottom plate to form two trough cavities. The first screw and the second screw are arranged upside down in the two trough cavities, and their screw shafts are coaxial with the bottom corner arcs of the trough;

[0009] There are gaps between the middle partition plate and both ends of the trough, and the gaps are larger than the length of the straight stirring blades. Diagonal support plates are respectively arranged between both sides of the middle partition plate and the trough bottom plate;

[0010] The transmission component and the coupling component are respectively arranged at both ends of the trough. Both ends of the first screw and the second screw respectively pass through the trough end plates and are connected to the transmission component or the coupling component;

[0011] An outlet is arranged at the bottom of one of the trough cavities near the coupling component end;

[0012] The driver is coupled to the transmission assembly, and the driver is also connected to and controlled by a controller.

[0013] Further, a three-sided enclosure is provided at the upper edge of the trough near the transmission assembly.

[0014] Compared with the prior art, the beneficial effects of the double-screw material conveying device of the present application are as follows:

[0015] By changing the rotation speed and direction of rotation of the first screw and the second screw, the trough of the double-screw material conveying device can not only quickly receive a large amount of materials intermittently output by the centrifuge, playing a buffering role, but also continuously and evenly output materials from the bottom discharge port of the trough, without material retention phenomena such as wall hanging and arching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a top view schematic diagram of the double-screw material conveying device of the present application;

[0017] Figure 2 is Figure 1 a P-direction view of

[0018] Figure 3 is Figure 2 an A-A cross-sectional view of

[0019] Figure 4 is a three-dimensional schematic diagram of the double-screw material conveying device of the present application;

[0020] Figure 5 is an application scenario schematic diagram of the double-screw material conveying device of the present application.

[0021] The reference numerals in the above-mentioned drawings are explained as follows:

[0022] 1 - trough, 2 - first screw, 3 - second screw, 4 - driver, 5 - transmission assembly, 6 - coupling assembly, 7 - controller, 8 - centrifuge, 9 - drying system;

[0023] 11 - discharge port, 12 - middle partition plate, 13 - inclined support plate, 14 - three-sided enclosure, 21 - screw blade, 22 - straight stirring blade. DETAILED DESCRIPTION OF THE INVENTION

[0024] The detailed implementation manners of the double-screw material conveying device of the present application are described as follows:

[0025] Combined with the attached Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the first auger 2 and the second auger 3 with the same size and shape are set. Helical blades 21 are arranged on the auger shafts, and 2 or 3 axial straight stirring blades 22 evenly distributed along the outer circumference of the auger shafts are arranged at one end of the auger shafts. When the augers rotate, the blades 21 play an axial conveying role, and the straight stirring blades 22 play a radial conveying role.

[0026] A cuboid-shaped trough is set as the material trough 1. The two bottom corners in its length direction are arc-shaped. A middle partition plate 12 is arranged along the length direction in the middle of the bottom plate of the material trough 1, dividing the trough into two trough cavities. There are gaps between the middle partition plate 12 and both ends of the material trough 1, and the gaps are larger than the length of the straight stirring blades 22. Diagonal bracing plates 13 are also respectively arranged between both sides of the middle partition plate 12 and the bottom plate of the material trough 1, which play a role in supporting and removing the dead corners of the stored materials.

[0027] Drive assemblies 5 and coupling assemblies 6 are respectively arranged at both ends of the material trough 1. A driver 4 is arranged to be connected with the drive assembly 5, and the driver 4 is also connected with a controller 7 and is controlled by it.

[0028] An outlet 11 is arranged at the bottom of one of the trough cavities of the material trough 1 near the coupling assembly 6 end, and a three-sided enclosure 14 is arranged at the upper edge of the material trough 1 near the drive assembly 5 end.

[0029] The first auger 2 and the second auger 3 are arranged upside down in the trough cavities on both sides of the middle partition plate 12 of the material trough 1, and their auger shafts are coaxial with the arc-shaped bottom corners of the material trough 1, and both ends respectively pass through the end plates of the material trough 1 and are connected with the drive assembly 5 or the coupling assembly 6.

[0030] Combined with the attached Figure 5 , the application scenario process flow of the double-auger material conveying device described in this application is described as follows:

[0031] As Figure 5 shown, the three-sided enclosure 14 above the material trough 1 is aligned with the outlet of the centrifuge 8, and the lower outlet 11 is aligned with the feed hopper of the drying system 9.

[0032] During normal operation, the centrifuge 8 outputs materials about once every 15 minutes. The three-sided enclosure 14 above the material trough 1 surrounds the periphery of the outlet of the centrifuge 8, which can ensure that the materials accurately enter the material trough 1. When the centrifuge 8 discharges materials, the driver 4 is controlled by the controller 7. Under the action of the drive assembly 5 and the coupling assembly 6, the first auger 2 and the second auger 3 rotate at high speed and in opposite rotation directions. High-speed rotation can ensure that a large amount of materials are quickly spread evenly throughout the material trough 1, playing a buffering role and preventing the phenomenon of material accumulation and arching.

[0033] After all the materials are evenly spread over the entire trough 1, the controller 7 controls the driver 4 to make the first auger 2 and the second auger 3 rotate at a low speed. The rotation direction is forward or reverse in a timely manner according to the material distribution in the two cavities, ensuring that the material is continuously and evenly output from the bottom discharge port 11 of the trough 1, without material retention phenomena such as wall hanging and arching.

[0034] It should be noted that the above is only one embodiment of the double-auger material conveying device described in this application. Based on the technical feature principle described in this application, similar technical solution examples shall fall within the protection scope of this application.

Claims

1. A double-auger material conveying device for potassium perchlorate production, characterized in that: It comprises a trough (1), a first auger (2), a second auger (3), a driver (4), a transmission assembly (5), a coupling assembly (6) and a controller (7); The first auger (2) and the second auger (3) have the same size and shape, and both are provided with a spiral auger blade (21) on the auger shaft, and one end of the auger shaft is provided with two or three axial straight stirring blades (22) evenly distributed along the outer circumference of the auger shaft; The trough (1) is a rectangular trough body, and the two bottom corners in the length direction are arc-shaped. A middle partition (12) is arranged in the middle of the bottom plate of the trough (1) along the length direction to form two trough cavities. The first auger (2) and the second auger (3) are arranged upside down in the two trough cavities, and their auger axes are respectively coaxial with the arc-shaped bottom corners of the trough (1); A gap is left between the middle partition (12) and the two ends of the trough (1), the gap being greater than the length of the straight stirring blade (22), and diagonal support plates (13) are respectively provided between the two sides of the middle partition (12) and the bottom plate of the trough (1); The transmission assembly (5) and the coupling assembly (6) are respectively arranged at two ends of the trough (1); two ends of the first auger (2) and the second auger (3) respectively pass through the end plates of the trough (1) and are connected to the transmission assembly (5) or the coupling assembly (6); A discharge port (11) is provided at the bottom of one of the trough cavities of the trough (1) near the end of the coupling assembly (6); The driver (4) is connected to the transmission assembly (5), and the driver (4) is also connected to a controller (7) and is controlled by the controller (7).

2. The double-auger material conveying device according to claim 1 is characterized in that: A three-sided enclosure (14) is provided on the upper edge of the trough (1) near the end of the transmission assembly (5).

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