Thermal battery powder weighing equipment

Abstract

The utility model discloses thermal battery powder weighing equipment, which comprises a rack body, a coarse weighing mechanism, a primary fine weighing mechanism, a secondary fine weighing mechanism, a fine weighing control valve and an electronic balance, and is characterized in that the rack body is respectively connected with the primary fine weighing mechanism, the secondary fine weighing mechanism and the electronic balance; the rough weighing mechanism is connected with the rack body through a fixing frame, and the fine weighing control valve is connected with the rough weighing mechanism. According to the utility model, the thermal battery powder is weighed in a full-automatic manner, so that operators can be greatly reduced, and the production efficiency is improved; the weighing precision is effectively improved through repeated weighing arrangement of the first-stage fine weighing mechanism, the second-stage fine weighing mechanism and the electronic balance; the device has the characteristics of high automation degree, high production efficiency, high precision and the like, and meets the batch production requirements of high-reliability thermal batteries.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal batteries, in particular to a thermal battery powder weighing device. Background Art

[0002] Thermal batteries are primary storage batteries that use molten salt as an electrolyte and are activated by melting it using their own heat source. They offer advantages such as a short activation time, wide operating temperature range, long storage cycles, and are maintenance-free. They are increasingly being used in weapon systems.

[0003] When a thermal battery is working, an external electrical signal or mechanical force is used to ignite the igniter inside the battery. The fire source of the igniter is guided to the heating plate inside the battery through the ignition rod, so that the single battery reaches its operating temperature, and the solid electrolyte that is non-conductive at room temperature is heated and melted into an ionic conductor. An electrochemical reaction occurs between the positive and negative electrodes to generate electrical energy.

[0004] Thermal battery pole pieces are key components of thermal batteries. These pole pieces are formed by pressing a certain amount of thermal battery powder. During pole piece production, the powder is weighed before the pole pieces are formed. Currently, thermal battery powder is weighed manually with a required accuracy of ±0.01g. However, manual weighing can result in significant error rates, necessitating the need for automated weighing equipment to improve accuracy.

[0005] Announcement No. CN214692215U Patent documents disclose a lead powder discharge buffer device for lead-acid batteries. This device primarily addresses the problems of existing lead powder discharge devices, such as large weighing deviations caused by uneven powder discharge speeds during weighing, and the tendency for lead powder to adhere to or remain on the walls of the powder storage silo. Its main features include a lead powder conveying pipeline, a powder storage cylinder, and a lead powder weighing mechanism. The powder storage cylinder is placed on the lead powder weighing mechanism. The lead powder conveying pipeline is horizontally arranged, closed at both ends, and contains a spiral propeller. One upper portion is provided with a feed pipe, and the other lower portion is provided with a discharge pipe. The powder storage cylinder is equipped with a vibrating device. A powder discharge hopper is located below the powder storage cylinder. This utility model ensures a uniform and slow lead powder delivery process during weighing, accurately weighs lead powder, and prevents lead powder from adhering to the cylinder wall or pipe during discharge. It is primarily used for weighing lead powder and precisely controlling lead powder discharge during lead paste and production for lead-acid batteries. The powder storage cylinder in this patent is immovable, making it difficult to disassemble and clean. Furthermore, this patent uses a single weighing method, which is less accurate than multiple weighing.

[0006] Patent document CN206981211U discloses a lithium battery positive electrode powder material mixing and screening system, including a conical mixer, the outlet end of which is sealed with a bidirectional screw conveyor capable of conveying equal amounts of powder materials in two directions. The bidirectional screw conveyor includes a horizontally arranged bidirectional screw conveyor, a feed port provided in the middle of the bidirectional screw conveyor and connected to the outlet end of the conical mixer, and a vibrating screen and an electromagnetic iron remover are sealed below the discharge ports at both ends of the bidirectional screw conveyor. However, the utility model solves the technical problems of uniform material distribution and iron removal by delivering powder materials to both sides through the bidirectional screw conveyor, which is different from the technical problem to be solved by the present application. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a thermal battery powder weighing device.

[0008] The utility model is achieved through the following technical solutions.

[0009] The utility model provides a thermal battery powder weighing device, which includes a frame body, a coarse weighing mechanism, a first-level fine weighing mechanism, a second-level fine weighing mechanism, a fine weighing control valve and an electronic balance. The frame body is respectively connected to the first-level fine weighing mechanism, the second-level fine weighing mechanism and the electronic balance. The coarse weighing mechanism is connected to the frame body through a fixed frame, and the fine weighing control valve is connected to the coarse weighing mechanism.

[0010] Preferably, the rough weighing mechanism includes a hopper, a servo motor, a spiral feeding mechanism, a slider mechanism and a support mechanism, the support mechanism is connected to the fixed frame, the slider mechanism is connected to the fixed frame, the hopper is connected to the slider mechanism, the servo motor of the hopper is set on the hopper, and the spiral feeding mechanism is connected to the servo motor.

[0011] Preferably, a stirring paddle is provided on the spiral feeding mechanism, and the threaded portion of the spiral feeding mechanism is a variable pitch thread.

[0012] Preferably, the slider mechanism includes a slide groove and a slider, the slide groove has a dovetail cross-section, the slider shape is adapted to the slide groove, and the slide groove and the slider are slidably connected.

[0013] Preferably, limit blocks are provided at both ends of the slide, the slide passes through the limit blocks for sliding connection, screw holes and screws are provided on the limit blocks, and the screws pass through one side of the limit blocks through the screw holes to contact and connect with the slide.

[0014] Preferably, the first-level precision weighing mechanism includes a counterweight plate A, a silo, and a vibrator A. The vibrator A is arranged on the frame body, the counterweight plate A is arranged on the vibrator A, and the silo is arranged on the counterweight plate A. One end of the silo is located above the second-level precision weighing mechanism.

[0015] Preferably, the secondary precision weighing mechanism includes a counterweight plate B, a linear hopper, and a vibrator B. The vibrator B is arranged on the frame body, the counterweight plate B is arranged on the vibrator B, and the linear hopper is arranged on the counterweight plate B. One end of the linear hopper is located above the high-precision electronic balance.

[0016] Preferably, the fine weighing control valve includes a high-speed rotating motor and a material intercepting valve plate, the high-speed rotating motor is connected to the material intercepting valve plate, and the material intercepting valve plate is connected to the rough weighing mechanism.

[0017] The beneficial effects of the present invention are:

[0018] The utility model adopts a fully automatic method to realize the weighing of thermal battery powder, which can greatly reduce the number of operators and improve production efficiency; through the first-level precision weighing mechanism, the second-level precision weighing mechanism and the electronic balance multiple weighing setting, the weighing accuracy is effectively improved; it has the characteristics of high degree of automation, high production efficiency and high precision, and meets the batch production needs of high-reliability thermal batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural diagram of the rough weighing mechanism of the utility model;

[0021] Figure 3 It is a structural diagram of the first-level precision weighing mechanism of the utility model;

[0022] Figure 4 It is a structural diagram of the two-stage precision weighing mechanism of the utility model;

[0023] Figure 5 This is a structural diagram of the precision weighing control valve of the utility model;

[0024] Figure 6 This is a structural diagram of the slider mechanism of the utility model;

[0025] Figure 7 This is a structural diagram of the slider mechanism of the utility model;

[0026] In the figure: 1-frame body, 101-fixed frame, 2-rough weighing mechanism, 21-hopper, 22-servo motor, 23-screw feeding mechanism, 24-slider mechanism, 241-chute, 242-slider, 243-limiting block, 244-screw hole, 245-screw, 25-support mechanism, 3-first-level fine weighing mechanism, 31-counterweight plate A, 32-hopper, 33-vibrator A, 4-second-level fine weighing mechanism, 41-counterweight plate B, 42-linear hopper, 43-vibrator B, 5-fine weighing control valve, 51-high-speed rotating motor, 52-valve plate, 6-electronic balance. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0028] Example:

[0029] like Figure 1-7 As shown, a thermal battery powder weighing device includes a frame 1, a coarse weighing mechanism 2, a first-level fine weighing mechanism 3, a second-level fine weighing mechanism 4, a fine weighing control valve 5, and an electronic balance 6. The frame 1 is connected to the first-level fine weighing mechanism 3, the second-level fine weighing mechanism 4, and the electronic balance 6, respectively. The coarse weighing mechanism 2 is connected to the frame 1 via a fixed frame 101, and the fine weighing control valve 5 is connected to the coarse weighing mechanism 2. The high-precision electronic balance 6 has an accuracy of ±0.01g and is used for powder weighing. It also has a communication function and can be connected to other equipment to feedback weighing data.

[0030] The rough weighing mechanism 2 includes a hopper 21, a servo motor 22, a spiral feeding mechanism 23, a slider mechanism 24 and a support mechanism 25. The support mechanism 25 is connected to the fixed frame 101 and is used to support other mechanisms of the rough weighing mechanism 2. The slider mechanism 24 is connected to the fixed frame 101 and is used for sliding the hopper 21, thereby facilitating loading and unloading. The hopper 21 is connected to the slider mechanism 24. The hopper 21 is used to hold powder. The servo motor 22 is set on the hopper 21. The spiral feeding mechanism 23 is connected to the servo motor 22. The spiral feeding mechanism 23 realizes spiral feeding under the action of the servo motor 22.

[0031] The spiral feeding mechanism 23 is provided with a stirring paddle, and the threaded portion of the spiral feeding mechanism 23 is a variable pitch thread, which can prevent the battery powder from agglomerating and causing blockage.

[0032] The slider mechanism 24 includes a slide groove 241 and a slider 242. The cross-section of the slide groove 241 is dovetail-shaped, and the shape of the slider 242 is adapted to the setting of the slide groove 241. The slider 242 is connected to the hopper 21 so that the hopper 21 can move along the slide groove 241. The slide groove 241 and the slider 242 are slidably connected.

[0033] Limit blocks 243 are provided at both ends of the chute 241. The chute 241 passes through the limit blocks 243 for sliding connection. The limit blocks 243 are provided with screw holes 244 and screws 245. The screws 245 pass through one side of the limit blocks 243 through the screw holes 244 to contact and connect with the chute 241. The tightness of the limit blocks 243 and the chute 241 can be adjusted by the screws 245. This arrangement allows the limit blocks 243 to be disassembled. After the limit blocks 243 are disassembled, the slider 242 and the hopper 21 can be removed, facilitating cleaning of the coarse weighing mechanism 2.

[0034] The first-level precision weighing mechanism 3 includes a counterweight plate A31, a silo 32, and a vibrator A33. The vibrator A33 is arranged on the frame body 1, the counterweight plate A31 is arranged on the vibrator A33, and the silo 32 is arranged on the counterweight plate A31. One end of the silo 32 is located above the second-level precision weighing mechanism 4. When working, the vibrator A33 vibrates the silo 32, thereby sending the powder to the second-level precision weighing mechanism 4 at a certain speed.

[0035] The secondary precision weighing mechanism 4 includes a counterweight plate B41, a linear hopper 42, and a vibrator B43. The vibrator B43 is arranged on the frame body 1, the counterweight plate B41 is arranged on the vibrator B43, and the linear hopper 42 is arranged on the counterweight plate B41. One end of the linear hopper 42 is located above the high-precision electronic balance 6. The vibrator B43 vibrates the linear hopper 42 to linearly deliver the powder at a certain speed to the material tray on the high-precision electronic balance 6.

[0036] Vibrator A33 and vibrator B43 are both high-frequency vibrators.

[0037] The fine weighing control valve 5 includes a high-speed rotating motor 51 and a material blocking valve plate 52. The high-speed rotating motor 51 is connected to the material blocking valve plate 52, and the material blocking valve plate 52 is connected to the rough weighing mechanism 2. When the high-precision electronic balance 6 detects that the powder reaches the weighing range, the high-speed rotating motor 51 rotates to drive the valve plate 52 to move immediately to cut off the incoming material.

[0038] A method for using a thermal battery powder weighing device comprises the following steps:

[0039] 1) Preparation:

[0040] The equipment is turned on, the weighing value and weighing tolerance are set, the material tray is manually placed on the electronic balance 6, and the equipment is tare to move the coarse weighing mechanism 2 to above the material bin 32 of the first-level fine weighing mechanism 3;

[0041] 2) Equipment operation:

[0042] The equipment's coarse weighing mechanism 2 starts working and the powder falls into the secondary fine weighing mechanism 3 until it reaches 95% of the weighing value. The primary fine weighing mechanism 3 and the secondary fine weighing mechanism 4 start working and start fine weighing until the weight of the powder falling into the electronic balance 6 reaches the target value.

[0043] 3) Remove the battery cover:

[0044] Manually disassemble the limiting block 243 to remove the hopper 21, and remove the material tray of the electronic balance 6, and replace it with a new material tray before continuing weighing.

Claims

1. A thermal battery powder weighing device, characterized by: The invention comprises a frame body (1), a coarse weighing mechanism (2), a first-level fine weighing mechanism (3), a second-level fine weighing mechanism (4), a fine weighing control valve (5) and an electronic balance (6); the frame body (1) is connected to the first-level fine weighing mechanism (3), the second-level fine weighing mechanism (4) and the electronic balance (6) respectively; the coarse weighing mechanism (2) is connected to the frame body (1) via a fixed frame (101); and the fine weighing control valve (5) is connected to the coarse weighing mechanism (2).

2. A thermal battery powder weighing device according to claim 1, characterized in that: The coarse weighing mechanism (2) comprises a hopper (21), a servo motor (22), a screw feeding mechanism (23), a slider mechanism (24) and a support mechanism (25); the support mechanism (25) is connected to a fixed frame (101); the slider mechanism (24) is connected to the fixed frame (101); the hopper (21) is connected to the slider mechanism (24); the hopper (21) and the servo motor (22) are arranged on the hopper (21); and the screw feeding mechanism (23) is connected to the servo motor (22).

3. The thermal battery powder weighing device according to claim 2, characterized in that: The spiral feeding mechanism (23) is provided with a stirring paddle, and the threaded portion of the spiral feeding mechanism (23) is a variable pitch thread.

4. The thermal battery powder weighing device according to claim 2, characterized in that: The slider mechanism (24) comprises a slide groove (241) and a slider (242); the slide groove (241) has a dovetail-shaped cross section; the slider (242) is adapted to fit the slide groove (241); and the slide groove (241) and the slider (242) are slidably connected.

5. The thermal battery powder weighing device according to claim 4, characterized in that: Limiting blocks (243) are provided at both ends of the slide groove (241), the slide groove (241) passes through the limiting blocks (243) for sliding connection, a screw hole (244) and a screw (245) are provided on the limiting blocks (243), and the screw (245) passes through one side of the limiting blocks (243) through the screw hole (244) and contacts and connects with the slide groove (241).

6. The thermal battery powder weighing device according to claim 1, characterized in that: The first-level precision weighing mechanism (3) comprises a counterweight plate A (31), a hopper (32), and a vibrator A (33); the vibrator A (33) is arranged on the frame (1); the counterweight plate A (31) is arranged on the vibrator A (33); the hopper (32) is arranged on the counterweight plate A (31); and one end of the hopper (32) is located above the second-level precision weighing mechanism (4).

7. The thermal battery powder weighing device according to claim 1, characterized in that: The secondary precision weighing mechanism (4) comprises a counterweight plate B (41), a linear hopper (42), and a vibrator B (43); the vibrator B (43) is arranged on the frame (1); the counterweight plate B (41) is arranged on the vibrator B (43); the linear hopper (42) is arranged on the counterweight plate B (41); and one end of the linear hopper (42) is located above a high-precision electronic balance (6).

8. The thermal battery powder weighing device according to claim 1, characterized in that: The fine weighing control valve (5) comprises a high-speed rotating motor (51) and a material intercepting valve plate (52). The high-speed rotating motor (51) and the material intercepting valve plate (52) are connected, and the material intercepting valve plate (52) is connected to the rough weighing mechanism (2).

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