Powder premixing machine and batching equipment

Abstract

The utility model provides a powder pre-mixer and batching equipment, and relates to the technical field of batching equipment, the powder pre-mixer comprises a mixing tank and a screw conveyer; a discharge port is formed in the bottom end of the mixing tank and is communicated with a feed port of the spiral conveyor; the spiral conveyor comprises a shell, a first driving device and a rotating shaft; one end of the rotating shaft is connected with the first driving device, the other end of the rotating shaft extends into the shell, and the first driving device can drive the rotating shaft to rotate around the axis of the rotating shaft; blades are arranged on the rotating shaft and spirally arranged around the axis of the rotating shaft; the spiral conveyor further comprises a controller, and the controller can adjust the rotating speed of the first driving device so as to adjust the material conveying speed of the spiral conveyor. Materials are conveyed to the next process through the spiral conveyor, the rotating speed of the blades can be accurately adjusted through the controller, and therefore the conveying speed of the materials in the material mixing tank can be accurately controlled, and accurate and quantitative material conveying is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batching equipment, in particular to a powder premixer and batching equipment. Background Art

[0002] During the production of solar cells, slurry needs to be coated on the surface of the substrate. The quality of the slurry largely determines the performance of the solar cell.

[0003] The batching equipment is used to produce slurry. The batching equipment includes a transition silo, a powder premixer and a slurry mixing device. After the main material and auxiliary material enter the transition silo, they enter the powder premixer through negative pressure adsorption. After the main material and auxiliary material are mixed in the powder premixer, they enter the slurry mixing device at the rear end through the vacuum feeder.

[0004] The existing powder premixer includes a tank and a stirring belt. The powder entering the tank is tumbled and mixed under the action of the stirring belt and discharged through the discharge port. However, the discharge speed of the powder premixer cannot be accurately controlled, which results in the inability to accurately quantify the material delivery amount. Utility Model Content

[0005] The utility model aims to provide a powder premixer to solve the technical problem that the feeding speed of the powder premixer in the prior art cannot be accurately controlled.

[0006] The powder premixer provided by the utility model comprises a mixing tank and a screw conveyor;

[0007] A discharge port is provided at the bottom end of the mixing tank, and the discharge port is communicated with the feed port of the screw conveyor;

[0008] The screw conveyor comprises a housing, a first driving device and a rotating shaft;

[0009] One end of the rotating shaft is connected to the first driving device, and the other end of the rotating shaft extends into the interior of the housing, and the first driving device can drive the rotating shaft to rotate around the axis of the rotating shaft; the rotating shaft is provided with blades, and the blades are arranged in a spiral shape around the axis of the rotating shaft;

[0010] The screw conveyor further comprises a controller, and the controller is capable of adjusting the rotation speed of the first driving device to adjust the material transmission speed of the screw conveyor.

[0011] Furthermore, the mixing tank comprises a tank body and a mixing and stirring mechanism;

[0012] The mixing and stirring mechanism comprises a second driving device, a transmission shaft and a stirring assembly;

[0013] One end of the transmission shaft is connected to the second driving device, and the other end of the transmission shaft passes through the top surface of the tank body and extends into the interior of the tank body; the second driving device can drive the transmission shaft to rotate around the axis of the transmission shaft; the stirring assembly is connected to the transmission shaft, and the stirring assembly can stir the material.

[0014] Further, the stirring assembly includes an inner spiral stirring element and an outer spiral stirring element;

[0015] The inner spiral stirring piece is in contact with the outer wall of the transmission shaft, and the inner spiral stirring piece is arranged in a spiral shape around the axis of the transmission shaft;

[0016] The outer spiral stirring member is connected to the outer side wall of the transmission shaft, the outer spiral stirring member is arranged in a spiral shape around the axis of the transmission shaft, and the outer spiral stirring member is arranged around the outer side of the inner spiral stirring member.

[0017] Furthermore, the outer spiral stirring element is connected to the outer side wall of the transmission shaft through a supporting element.

[0018] Furthermore, a weighing sensor is provided on the tank body.

[0019] Furthermore, a vibrating hammer is provided on the outer wall of the tank body, and the vibrating hammer is arranged in the lower middle part of the tank body.

[0020] Furthermore, the tank body is conical, and the diameter of the tank body gradually decreases from the top end to the bottom end of the tank body.

[0021] The utility model also aims to provide a batching device, including the powder premixer provided by the utility model.

[0022] The powder premixer provided by the utility model comprises a mixing tank and a screw conveyor; the bottom end of the mixing tank is provided with a discharge port, and the discharge port is connected with the feed port of the screw conveyor. After the materials are stirred and mixed in the mixing tube, they flow into the feed port of the screw conveyor from the discharge port at the bottom end of the mixing tank, and the screw conveyor conveys the materials to the next process. By setting the rotation speed of the screw conveyor, the transmission speed of the materials in the mixing tank can be accurately controlled, thereby realizing accurate quantitative material delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a powder premixer provided in an embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of a powder premixer provided in an embodiment of the utility model;

[0026] Figure 3 It is a perspective view of a powder premixer provided by an embodiment of the utility model;

[0027] Figure 4 It is a partial schematic diagram of a powder premixer provided in an embodiment of the utility model.

[0028] Icons: 1-tank body; 11-mixing chamber; 111-drive shaft; 1111-inner spiral stirring element; 1112-outer spiral stirring element; 1113-support element; 12-vibration hammer; 13-discharging port; 14-weighing sensor; 15-second driving device; 16-material inlet; 2-screw conveyor; 21-housing; 22-rotating shaft; 23-blades; 24-first driving device. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first" and "second" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The utility model provides a powder premixer and batching equipment. A plurality of embodiments are given below to describe the powder premixer and batching equipment provided by the utility model in detail.

[0033] Example 1

[0034] The powder premixer provided in this embodiment is as follows: Figures 1 to 4 As shown, it includes a mixing tank and a screw conveyor 2; a discharge port 13 is provided at the bottom end of the mixing tank, and the discharge port 13 is communicated with the feed port of the screw conveyor 2.

[0035] After the materials are stirred and mixed in the mixing tube, they flow into the feed port of the screw conveyor 2 from the discharge port 13 at the bottom of the mixing tank, and the screw conveyor 2 conveys the materials to the next process. By setting the rotation speed of the screw conveyor 2, the transmission speed of the materials in the mixing tank can be accurately controlled, thereby achieving accurate quantitative transportation of materials.

[0036] Furthermore, the screw conveyor 2 includes a shell 21, a first drive device 24 and a rotating shaft 22; one end of the rotating shaft 22 is connected to the first drive device 24, and the other end of the rotating shaft 22 extends into the shell 21, and the first drive device 24 can drive the rotating shaft 22 to rotate around the axis of the rotating shaft 22; the rotating shaft 22 is provided with blades 23, and the blades 23 are spirally arranged around the axis of the rotating shaft 22.

[0037] Specifically, a conveying cavity is formed inside the shell 21, one end of the rotating shaft 22 is connected to the first driving device 24, and the other end of the rotating shaft 22 extends into the conveying cavity. The first driving device 24 is fixedly connected to the outer surface of the shell 21, and the first driving device 24 drives the rotating shaft 22 to rotate around the axis of the rotating shaft 22, and the rotating shaft 22 drives the blades 23 to rotate around the axis of the rotating shaft 22, thereby transporting the mixed powder in the conveying cavity along the axis direction of the rotating shaft 22.

[0038] The first driving device 24 can be any suitable device such as an electric motor or a pneumatic motor. The axis of the mixing tank is perpendicular to the axis of the rotating shaft 22 , and the feed port of the screw conveyor 2 is arranged at the top of the housing 21 .

[0039] Furthermore, the screw conveyor 2 also includes a controller, which can adjust the rotation speed of the first driving device 24 to adjust the material transmission speed of the screw conveyor 2.

[0040] By adjusting the rotation speed of the first driving device 24 through the controller, the rotation speed of the rotating shaft 22 can be adjusted, and then the rotation speed of the blade 23 can be adjusted. The rotation speed of the blade 23 can be accurately adjusted through the controller, so that the transmission speed of the material in the mixing tank can be accurately controlled, and accurate quantitative material delivery can be achieved.

[0041] Furthermore, the mixing tank includes a tank body 1 and a mixing and stirring mechanism; the mixing and stirring mechanism includes a second driving device 15, a transmission shaft 111 and a stirring assembly; one end of the transmission shaft 111 is connected to the second driving device 15, and the other end of the transmission shaft 111 passes through the top surface of the tank body 1 and extends into the interior of the tank body 1; the second driving device 15 can drive the transmission shaft 111 to rotate around the axis of the transmission shaft 111; the stirring assembly is connected to the transmission shaft 111, and the stirring assembly can stir the material.

[0042] A mixing chamber 11 is formed in the tank body 1, and the tank body 1 has an upper cover, and the upper cover is provided with a material inlet 16 connected to the mixing chamber 11, and the material enters the tank body 1 through the material inlet 16. The bottom end of the tank body 1 is provided with a discharge port 13, and the material flows into the screw conveyor 2 through the discharge port 13. The bottom end of the tank body 1 is connected to the top end of the housing 21 of the screw conveyor 2 through a material conveying channel, so that the discharge port 13 is connected to the feed port of the screw conveyor 2.

[0043] The second driving device 15 can be an electric motor, or a pneumatic motor or any other suitable device.

[0044] The second driving device 15 is fixedly mounted on the outer surface of the upper cover, one end of the transmission shaft 111 is connected to the second driving device 15, the other end of the transmission shaft 111 passes through the upper cover and extends into the mixing chamber 11 inside the tank body 1, and the other end of the transmission shaft 111 is arranged on the upper side of the discharge port 13. The second driving device 15 can drive the transmission shaft 111 to rotate around the axis of the transmission shaft 111, and then drive the stirring assembly to rotate around the axis of the transmission shaft 111. The stirring assembly is used to stir the materials to make the materials mixed more evenly.

[0045] The stirring assembly may include any suitable form such as a stirring bar or a stirring belt.

[0046] Preferably, the stirring assembly includes an inner spiral stirring member 1111 and an outer spiral stirring member 1112; the inner spiral stirring member 1111 is in contact with the outer wall of the transmission shaft 111, and the inner spiral stirring member 1111 is spirally arranged around the axis of the transmission shaft 111; the outer spiral stirring member 1112 is connected to the outer wall of the transmission shaft 111, and the outer spiral stirring member 1112 is spirally arranged around the axis of the transmission shaft 111, and the outer spiral stirring member 1112 is arranged outside the inner spiral stirring member 1111.

[0047] The inner spiral stirring member 1111 is fixedly arranged on the outer wall of the transmission shaft 111, and the inner spiral stirring member 1111 is spirally arranged around the axis of the transmission shaft 111, and the inner spiral stirring member 1111 is in direct contact and fit with the transmission shaft 111; the outer spiral stirring member 1112 is surrounded by the outer side of the inner spiral stirring member 1111, and the outer spiral stirring member 1112 is not in direct contact with the outer wall of the transmission shaft 111, and the outer spiral stirring member 1112 is spirally arranged around the axis of the transmission shaft 111.

[0048] The second driving device 15 drives the transmission shaft 111 to rotate around the axis of the transmission shaft 111, and the transmission shaft 111 drives the inner spiral stirring member 1111 and the outer spiral stirring member 1112 to rotate synchronously and coaxially around the axis of the transmission shaft 111, and the rotation of the outer spiral stirring member 1112 drives the material to roll upward along the axis of the transmission shaft 111 on the outside, and at the same time, the inner spiral stirring member 1111 drives the material to be spirally transported downward along the axis of the transmission shaft 111; the inner spiral stirring member 1111 and the outer spiral stirring member 1112 drive the material to roll in the tank body 1 and move towards each other, so that the material in the tank body 1 can be fully stirred and the material mixing is more uniform.

[0049] In this embodiment, the inner spiral stirring element 1111 is a stirring bar, and the outer spiral stirring element 1112 is a stirring belt.

[0050] Furthermore, the outer spiral stirring element 1112 is connected to the outer side wall of the transmission shaft 111 through the supporting element 1113 .

[0051] The outer spiral stirring member 1112 does not directly contact the outer side wall of the transmission shaft 111 , and the outer spiral stirring member 1112 is fixedly connected to the outer side wall of the transmission shaft 111 via the support member 1113 .

[0052] The support member 1113 may be a support rod, or a support plate or any other suitable structure.

[0053] In general, the support member 1113 is a support rod, and a plurality of support rods are arranged at intervals along the axial direction of the transmission shaft 111. The extension direction of each support rod is arranged along the radial direction of the transmission shaft 111. One end of each support rod is fixedly connected to the transmission shaft 111, and the other end of each support rod is fixedly connected to the external spiral stirring member 1112.

[0054] Furthermore, a weighing sensor 14 is provided on the tank body 1 .

[0055] The weighing sensor 14 can detect the weight of the material entering the tank body 1. When the material in the tank body 1 is transported to the rear end, the weight of the remaining material in the tank body 1 is detected in real time. When it is detected that the transportation of the material in the tank body 1 is completed, a control signal is sent out, and the central control machine controls another powder premixer to transmit the material to the rear end, thereby realizing continuous transportation of the material and further realizing continuous operation of the entire line.

[0056] Furthermore, a vibrating hammer 12 is provided on the outer wall of the tank body 1 , and the vibrating hammer 12 is arranged in the middle and lower part of the tank body 1 .

[0057] A vibrating hammer 12 is provided on the outer wall of the tank body 1, and the vibrating hammer 12 can vibrate the tank wall of the tank body 1 to clean up the materials attached to the inner wall of the tank body 1. The middle and lower part of the tank body 1 is prone to material accumulation, and the vibrating hammer 12 is arranged in the middle and lower part of the tank body 1 to better prevent the tank body 1 from piling up.

[0058] Furthermore, the tank body 1 is in a cone shape, and the diameter of the tank body 1 gradually decreases from the top end of the tank body 1 to the bottom end of the tank body 1 .

[0059] From the top end to the bottom end of the tank body 1 , the diameter of the tank body 1 gradually decreases, and the cross-sectional area of ​​the tank body 1 gradually decreases. The material inlet 16 of the tank body 1 is arranged at the top end of the tank body 1 , and the discharge port 13 of the tank body 1 is arranged at the bottom end of the tank body 1 .

[0060] Example 2

[0061] The batching equipment provided in this embodiment includes the powder premixer provided in Embodiment 1. After being stirred and mixed in the mixing tube, the materials flow into the feed port of the screw conveyor 2 from the discharge port 13 at the bottom of the mixing tank, and the screw conveyor 2 conveys the materials to the next process. By setting the rotation speed of the screw conveyor 2, the transmission speed of the materials in the mixing tank can be accurately controlled, thereby realizing accurate quantitative conveying of materials.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A powder premixer, characterized in that: It includes a mixing tank and a screw conveyor (2); The bottom end of the mixing tank is provided with a discharge port (13), and the discharge port (13) is connected to the feed port of the screw conveyor (2); The screw conveyor (2) comprises a housing (21), a first driving device (24) and a rotating shaft (22); One end of the rotating shaft (22) is connected to the first driving device (24), and the other end of the rotating shaft (22) extends into the interior of the housing (21); the first driving device (24) can drive the rotating shaft (22) to rotate around the axis of the rotating shaft (22); a blade (23) is provided on the rotating shaft (22), and the blade (23) is spirally arranged around the axis of the rotating shaft (22); The screw conveyor (2) further comprises a controller, wherein the controller is capable of adjusting the rotation speed of the first driving device (24) so ​​as to adjust the material transmission speed of the screw conveyor (2).

2. The powder premixer according to claim 1, characterized in that: The mixing tank comprises a tank body (1) and a mixing and stirring mechanism; The mixing and stirring mechanism comprises a second driving device (15), a transmission shaft (111) and a stirring assembly; One end of the transmission shaft (111) is connected to the second driving device (15), and the other end of the transmission shaft (111) passes through the top surface of the tank body (1) and extends into the interior of the tank body (1); the second driving device (15) can drive the transmission shaft (111) to rotate around the axis of the transmission shaft (111); the stirring component is connected to the transmission shaft (111), and the stirring component can stir materials.

3. The powder premixer according to claim 2, characterized in that: The stirring assembly comprises an inner spiral stirring element (1111) and an outer spiral stirring element (1112); The inner spiral stirring piece (1111) is in contact with the outer wall of the transmission shaft (111), and the inner spiral stirring piece (1111) is arranged in a spiral shape around the axis of the transmission shaft (111); The outer spiral stirring member (1112) is connected to the outer side wall of the transmission shaft (111), the outer spiral stirring member (1112) is arranged in a spiral shape around the axis of the transmission shaft (111), and the outer spiral stirring member (1112) is arranged around the outer side of the inner spiral stirring member (1111).

4. The powder premixer according to claim 3, characterized in that: The outer spiral stirring element (1112) is connected to the outer side wall of the transmission shaft (111) via a supporting element (1113).

5. The powder premixer according to claim 2, characterized in that: The tank body (1) is provided with a weighing sensor (14).

6. The powder premixer according to claim 2, characterized in that: A vibrating hammer (12) is provided on the outer wall of the tank body (1), and the vibrating hammer (12) is arranged at the middle and lower part of the tank body (1).

7. The powder premixer according to claim 2, characterized in that: The tank body (1) is conical, and the diameter of the tank body (1) gradually decreases from the top end of the tank body (1) to the bottom end of the tank body (1).

8. A batching equipment, characterized in that: A powder premixer comprising the powder premixer according to any one of claims 1 to 7.

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