Electronic weighing and mixing device

Abstract

The utility model relates to an electronic weighing and mixing device, which belongs to the technical field of material weighing and mixing and comprises a weighing mechanism and a mixing mechanism which are arranged up and down, and a weighing sensor is arranged between the weighing mechanism and the mixing mechanism. The weighing mechanism comprises a weighing bin with a feeding port in the top and a conical cavity in the bottom, arc-shaped movable switches are symmetrically installed at the bottom of the conical cavity through connecting blocks, a hydraulic rod of the hydraulic device penetrates through a through hole to drive the movable switches to be opened and closed, and accurate discharging is achieved. The mixing mechanism comprises a mixing bin internally provided with spiral blades, and a rotating shaft is driven by a driving motor and matched with a material guide groove to complete uniform mixing and discharging. And the PLC controller integrally controls the weighing sensor, the hydraulic device and the driving motor, so that the automation of the whole process of weighing, discharging and mixing is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of material weighing and mixing, and particularly relates to an electronic weighing and mixing device. Background Art

[0002] In the process of chemical fertilizer production, the accurate weighing and uniform mixing of materials are the key links to ensure product quality. Most traditional equipment adopts a split design, separating the weighing and mixing processes. It is necessary to transfer materials manually or mechanically, resulting in cumbersome operation processes, low efficiency, and easy material residue during the transfer process, affecting the proportioning accuracy. In addition, the power transmission efficiency of the mixing mechanism is low, the layout of the spiral blades does not match the fluidity of chemical fertilizer materials, it is difficult to ensure the mixing uniformity, and the level of automatic control is insufficient. It is difficult to achieve precise timing coordination of weighing, discharging, and mixing, relying on manual intervention, and the production efficiency and consistency are limited.

[0003] In the prior art, there is an electronic quantitative scale for weighing chemical fertilizers with the publication number of CN218180090U. This device expands the weighing area through an extension mechanism and sets a reinforcement mechanism to enhance the support of the extension plate. It solves the problem of the fixed area of the traditional weighing bottom plate through mechanical expansion to meet the need for simultaneous weighing of multiple bags of chemical fertilizers. However, this device only realizes the weighing function. When proceeding to the next mixing and stirring process, additional equipment or manual support is required, resulting in a fragmented production process and thus low efficiency. Summary of the Utility Model

[0004] The electronic weighing and mixing device described in the utility model includes a weighing mechanism and a mixing mechanism. The weighing mechanism is arranged above the mixing mechanism, and several weighing sensors are installed between the weighing mechanism and the mixing mechanism. The weighing mechanism includes a weighing bin. A conical cavity is provided at the middle position of the bottom of the weighing bin. The bottom of the weighing bin is connected to the bottom of the conical cavity through a connecting block. Activity switches are symmetrically arranged between the connecting blocks. The opening and closing of the bottom of the weighing bin are realized by controlling the vertical displacement of the activity switches.

[0005] Several support rods I are installed outside the weighing mechanism, and a cross bar I is connected between the support rods I. Several support rods II are installed outside the mixing mechanism, and several cross bars II are connected between the support rods II.

[0006] The top of the weighing bin is provided with a feed inlet. Through holes are symmetrically arranged on the side surface of the feed inlet. The inner wall of the lower half of the weighing bin is inclined towards the conical cavity.

[0007] The activity switch is integrally arc-shaped. The inner diameter of the activity switch is the same as the radius of the bottom of the conical cavity, and the outer diameter of the activity switch is the same as the radius of the bottom of the weighing bin.

[0008] Several hydraulic devices are installed at the bottom of the cross bar I. Hydraulic rods are provided at the bottom of the hydraulic devices. The hydraulic rods pass through the through holes and are connected to the activity switches.

[0009] The mixing mechanism includes a mixing bin. There is a discharge port at the bottom of the mixing bin, and a material guiding trough is connected to the discharge port. The material guiding trough is arranged obliquely downward. A rotating shaft is provided inside the mixing bin, and spiral blades are installed on the outer side of the rotating shaft. The top end of the rotating shaft is connected with a bearing. Several support frames are welded on the top of the mixing bin. One end of the support frame is welded on the inner wall of the mixing bin, and the bearing is installed above the support frame.

[0010] An equipment mounting plate is installed between the second cross bars. A driving motor is installed above the equipment mounting plate. A motor fixing device is provided outside the driving motor, and the bottom end of the rotating shaft is connected to the rotating end of the driving motor.

[0011] It further includes a PLC controller, and the PLC controller is electrically connected to the weighing sensor, the hydraulic device and the driving motor respectively.

[0012] The utility model has the following beneficial effects:

[0013] 1. The weighing mechanism and the mixing mechanism are arranged up and down, and the two are connected by a weighing sensor, reducing the material transfer steps, reducing the residual error and improving the operation efficiency.

[0014] 2. The conical cavity at the bottom of the weighing bin cooperates with the arc-shaped movable switch, and the opening and closing are controlled by hydraulic drive, with good sealing performance, smooth and accurate discharging.

[0015] 3. The cooperation between the hydraulic device and the through hole enables the hydraulic rod to directly drive the movable switch through the through hole on the side of the feeding port, with a compact structure, avoiding external interference and improving the control stability.

[0016] 4. The spiral blades of the mixing mechanism are linked with the driving motor, the rotating shaft drives the spiral blades to rotate, and cooperate with the material guiding trough to discharge the material obliquely downward, ensuring that the materials are fully mixed and the discharging is uniform.

[0017] 5. The PLC controller integrates control to realize the automatic coordination of weighing, discharging and mixing, reducing manual intervention and improving the automation and operation reliability of the system.

[0018] 6. The framework composed of the support rods and the cross bars enhances the overall stability. The equipment mounting plate fixes the driving motor, which is convenient for maintenance and saves space. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the weighing mechanism from the first perspective;

[0021] Figure 3 It is a schematic diagram of the structure of the weighing mechanism from the second perspective;

[0022] Figure 4 Schematic cross-sectional view of the weighing mechanism;

[0023] Figure 5 Schematic structural view of the mixing mechanism;

[0024] Figure 6 Schematic cross-sectional view of the mixing mechanism;

[0025] Figure 7 Schematic structural view of the connection between the hydraulic device and the movable switch.

[0026] Wherein: 1, weighing sensor; 2, support rod I; 3, cross bar I; 4, support rod II; 5, cross bar II; 6, weighing bin; 7, feed inlet; 8, through groove; 9, conical cavity; 10, connecting block; 11, movable switch; 12, hydraulic device; 13, hydraulic rod; 14, mixing bin; 15, discharge port; 16, material guiding groove; 17, rotating shaft; 18, spiral blade; 19, bearing; 20, support frame; 21, equipment mounting plate; 22, drive motor. Specific embodiments

[0027] As Figures 1 to 7 shown, the electronic weighing and mixing device of the present utility model includes a weighing mechanism and a mixing mechanism. The weighing mechanism is arranged above the mixing mechanism. A plurality of weighing sensors 1 are installed between the weighing mechanism and the mixing mechanism. The weighing mechanism includes a weighing bin 6. A conical cavity 9 is provided at the middle position of the bottom of the weighing bin 6. The bottom of the weighing bin 6 is connected to the bottom of the conical cavity 9 through a connecting block 10. Movable switches 11 are symmetrically arranged between the connecting blocks 10. The opening and closing of the bottom of the weighing bin are realized by controlling the vertical displacement of the movable switches 11.

[0028] A plurality of support rods I 2 are installed outside the weighing mechanism. A cross bar I 3 is connected between the support rods I 2. A plurality of support rods II 4 are installed outside the mixing mechanism. A plurality of cross bars II 5 are connected between the support rods II 4.

[0029] A feed inlet 7 is provided at the top of the weighing bin 6. Through holes 8 are symmetrically provided on the side surface of the feed inlet 7. The inner wall of the lower half of the weighing bin 6 is inclined towards the conical cavity 9.

[0030] The movable switch 11 is integrally arc-shaped. The inner diameter of the movable switch 11 is the same as the radius of the bottom of the conical cavity 9. The outer diameter of the movable switch 11 is the same as the radius of the bottom of the weighing bin 6.

[0031] A plurality of hydraulic devices 12 are installed at the bottom of the cross bar I 3. A hydraulic rod 13 is provided at the bottom of the hydraulic device 12. The hydraulic rod 13 passes through the through hole 8 and is connected to the movable switch 11.

[0032] The mixing mechanism includes a mixing bin 14. A discharge port 15 is provided at the bottom of the mixing bin 14. The discharge port 15 is connected to a guide chute 16 which is arranged obliquely downward. A rotating shaft 17 is provided inside the mixing bin 14. A spiral blade 18 is installed on the outer side of the rotating shaft 17. The top end of the rotating shaft 17 is connected to a bearing 19. A plurality of support frames 20 are welded to the top of the mixing bin 14. One end of the support frame 20 is welded to the inner wall of the mixing bin 14. The bearing 19 is installed above the support frame 20.

[0033] Between the cross bars II 5, an equipment mounting plate 21 is installed. Above the equipment mounting plate 21, a driving motor 22 is installed. An electric motor fixing device is provided outside the driving motor 22. The bottom end of the rotating shaft 17 is connected to the rotating end of the driving motor 22.

[0034] It also includes a PLC controller which is electrically connected to the weighing sensor 1, the hydraulic device 12 and the driving motor 22 respectively.

[0035] Specifically, the present utility model includes a weighing mechanism and a mixing mechanism which are arranged up and down. A plurality of weighing mechanisms are fixed above the mixing mechanism. A plurality of weighing sensors 1 are installed between the weighing mechanism and the mixing mechanism. Support rods I 2 are symmetrically installed outside the weighing mechanism. The support rods I 2 are fixed to the outside of the weighing bin 6 by welding. A cross bar I 3 is connected between the support rods I 2; Support rods II 4 are symmetrically installed outside the mixing mechanism. The support rods II 4 are fixed to the outside of the mixing bin 14 by welding. The support rods II 4 are connected by a cross bar II 5 to form a support frame to ensure the stability of the overall structure.

[0036] Specifically, a feed inlet 7 is provided at the top of the weighing bin 6. The feed inlet 7 is used to receive the fertilizer raw materials to be weighed. Through holes 8 are symmetrically opened on the side surface of the feed inlet 7 for the hydraulic rods 13 to pass through. A conical cavity 9 is provided at the central position of the bottom of the weighing bin 6. On the one hand, the conical cavity 9 prevents the fertilizer raw materials to be weighed from accumulating in the middle. On the other hand, it provides an installation space for the bearing 19 at the bottom. The inner wall of the lower half of the weighing bin 6 is inclined towards the conical cavity 9 to guide the materials to fall centrally.

[0037] Specifically, the bottom of the conical cavity 9 is fixed to the bottom of the weighing bin 6 through a connecting block 10. Arc-shaped movable switches 11 are symmetrically installed between the connecting blocks 10. The inner diameter of the movable switch 11 is the same as the bottom radius of the conical cavity 9, and the outer diameter matches the bottom radius of the weighing bin 6 to ensure the sealing performance when closed. A hydraulic device 12 is installed at the bottom of the cross bar I 3. The hydraulic rod 13 passes through the through hole 8 and is connected to the movable switch 11. The PLC controller controls the hydraulic device 12 to drive the hydraulic rod 13 to expand and contract according to the feedback signal of the weighing sensor 1, so as to realize the precise opening and closing of the movable switch 11.

[0038] Specifically, a discharge port 15 is provided at the bottom of the mixing bin 14. The discharge port 15 is connected to a downwardly inclined material guide groove 16 to ensure smooth output of the mixed material. A switching device needs to be provided at the discharge port 15 to close the discharge port 15 during mixing. A rotating shaft 17 is vertically installed inside the mixing bin 14. A spiral blade 18 is welded on the outer side of the rotating shaft 17. The top end of the rotating shaft 17 is fixed to the support frame 20 through a bearing 19, and the support frame 20 is welded to the top of the inner wall of the mixing bin 14.

[0039] Specifically, an equipment mounting plate 21 is installed between the cross bars II 5, and a driving motor 22 is fixed on the equipment mounting plate 21. The bottom end of the rotating shaft 17 is connected to the output shaft of the driving motor 22, and the rotation speed is adjusted by the PLC controller. The spiral blade 18 rotates with the rotating shaft 17 to stir the falling material.

[0040] Specifically, the chemical fertilizer raw materials enter the weighing bin 6 through the feed inlet 7. The weight sensor 1 monitors the weight in real time. After weighing, the PLC controller controls the hydraulic device 12 to drive the hydraulic rod 13 to press down, and the movable switch 11 is opened. The material falls along the opened gap into the mixing bin 14 for discharging. After discharging is completed, the hydraulic rod 13 resets, and the movable switch 11 closes. The driving motor 22 is started to drive the spiral blade 18 to rotate. After the material is fully mixed in the mixing bin 14, it is output through the discharge port 15 and the material guide groove 16.

Claims

1. An electronic weighing and mixing device, comprising a weighing mechanism and a mixing mechanism, characterized in that: The weighing mechanism is arranged above the mixing mechanism, and a plurality of weighing sensors (1) are installed between the weighing mechanism and the mixing mechanism. The weighing mechanism comprises a weighing bin (6), and a conical cavity (9) is arranged in the middle of the bottom of the weighing bin (6). The bottom of the weighing bin (6) is connected to the bottom of the conical cavity (9) via a connecting block (10), and movable switches (11) are symmetrically arranged between the connecting blocks (10). The bottom of the weighing bin (6) is opened and closed by controlling the vertical displacement of the movable switches (11).

2. The electronic weighing and mixing device according to claim 1, characterized in that: A plurality of support rods I (2) are installed on the outer side of the weighing mechanism, and a cross rod I (3) is connected between the support rods I (2); a plurality of support rods II (4) are installed on the outer side of the mixing mechanism, and a plurality of cross rods II (5) are connected between the support rods II (4).

3. The electronic weighing and mixing device according to claim 1, characterized in that: The top of the weighing bin (6) is provided with a feed opening (7), the side of the feed opening (7) is symmetrically provided with through holes (8), and the inner wall of the lower half of the weighing bin (6) is inclined toward the conical cavity (9).

4. The electronic weighing and mixing device according to claim 3, characterized in that: The movable switch (11) is in an arc shape as a whole, the inner diameter of the movable switch (11) is the same as the radius of the bottom of the conical cavity (9), and the outer diameter of the movable switch (11) is the same as the radius of the bottom of the weighing bin (6).

5. The electronic weighing and mixing device according to claim 2, characterized in that: A plurality of hydraulic devices (12) are installed at the bottom of the crossbar I (3), and a hydraulic rod (13) is provided at the bottom of the hydraulic device (12). The hydraulic rod (13) passes through the through hole (8) and is connected to the movable switch (11).

6. The electronic weighing and mixing device according to claim 5, characterized in that: The mixing mechanism comprises a mixing bin (14), a material discharge port (15) being provided at the bottom of the mixing bin (14), the material discharge port (15) being connected to a material guide trough (16), the material guide trough (16) being arranged obliquely downward, a rotating shaft (17) being provided inside the mixing bin (14), a spiral blade (18) being installed on the outer side of the rotating shaft (17), a bearing (19) being connected to the top end of the rotating shaft (17), a plurality of support frames (20) being welded to the top of the mixing bin (14), one end of the support frame (20) being welded to the inner wall of the mixing bin (14), and the bearing (19) being installed above the support frame (20).

7. The electronic weighing and mixing device according to claim 6, characterized in that: An equipment mounting plate (21) is installed between the cross bars II (5), a driving motor (22) is installed above the equipment mounting plate (21), a motor fixing device is provided on the outer side of the driving motor (22), and the bottom end of the rotating shaft (17) is connected to the rotating end of the driving motor (22).

8. The electronic weighing and mixing device according to claim 7, characterized in that: It also includes a PLC controller, which is electrically connected to the weighing sensor (1), the hydraulic device (12) and the drive motor (22) respectively.

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