Automatic feeding device for sodium carbonate powder during preparation of sodium carbonate solution in lithium carbonate production

Abstract

The utility model provides an automatic sodium carbonate powder feeding device during sodium carbonate solution preparation in lithium carbonate production, which is characterized in that a conveying belt is arranged at an angle of 45 degrees, the top of the conveying belt is connected with a feed port of an unpacking machine, and a discharge port of an unpacking machine transition hopper of the unpacking machine is connected with an airflow conveying pipeline of an airflow conveying system; the other end of the pneumatic conveying pipeline is connected with at least two weighing hoppers, and weighing hopper chutes are arranged right below discharge ports of the weighing hoppers and are fixed on the alkali preparation tank; according to the device, automatic feeding, weighing, unpacking and feeding are achieved, the feeding efficiency is improved, dust is reduced, and harm caused by manual operation to the human body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production of alkali metal compounds, namely lithium, sodium, potassium, rubidium, cesium or francium, and in particular to an automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production. Background Art

[0002] At present, the feeding method of soda ash powder when preparing soda ash solution in the production of lithium carbonate prepared from spodumene is mainly manual feeding. This method cannot achieve continuous feeding, has low efficiency, is difficult to control the process, produces a lot of dust, is harmful to the human body, and has serious material waste. The weighing ratio is inaccurate, resulting in a large deviation in the concentration of the prepared solution, etc. In order to solve the above problems, an automatic feeding device for soda ash powder when preparing soda ash solution in the production of lithium carbonate is proposed. Utility Model Content

[0003] In order to solve at least one of the above-mentioned technical shortcomings, the utility model provides an automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production. The conveyor belt is set at 45°, and the top of the conveyor belt is connected to the feeding port of the unpacking machine. The discharge port of the unpacking machine transition hopper of the unpacking machine is connected to the airflow conveying pipeline of the airflow conveying system, and the other end of the airflow conveying pipeline is connected to at least two weighing hoppers. A weighing hopper chute is provided directly below the discharge port of the weighing hopper, and the weighing hopper chute is fixed on the alkali preparation tank.

[0004] Furthermore, the weighing hopper includes a weighing cylinder, the top of which is provided with a through hole with a diameter smaller than that of the weighing cylinder, a feed pipe is provided in the through hole, the bottom end of the feed pipe is provided with a support plate, the surface of the support plate is provided with four pressure sensors, the probes of the pressure sensors are supported on the lower surface of the top wall of the weighing cylinder, discharge valves are provided at the bottom of the weighing cylinder and the middle of the feed pipe, the top end of the feed pipe is connected to the airflow conveying pipeline, and the bottom end of the weighing cylinder is connected to the weighing hopper chute.

[0005] Furthermore, pouring grooves are provided on both sides of the upper surface of the weighing hopper chute, and a feeding hole corresponding to the weighing hopper is provided on the top of the weighing hopper chute, and the bottom of the weighing cylinder is inserted into the feeding hole.

[0006] Furthermore, anti-backflow plates are provided on the inclined inner walls on both sides of the weighing hopper chute, and the anti-backflow plates and the inclined inner walls of the weighing hopper chute form a V-shaped groove. An inclined plate is provided on the lower surface of one side of the pouring trough close to the feed hole, and the end of the inclined plate is placed in the middle of the groove.

[0007] Furthermore, the air flow conveying pipeline, the weighing hopper, the weighing hopper chute and the alkali preparation tank are all made of stainless steel.

[0008] Beneficial effects: 1. The device realizes automatic loading, weighing, unpacking and feeding, which improves feeding efficiency, reduces dust, and reduces the harm to the human body caused by manual operation.

[0009] 2. Through the setting of anti-backflow plate and inclined plate, the powder can be poured into the groove and flow into the weighing hopper chute only when it passes through the groove, thus forming a structure in the groove to prevent dust from flying.

[0010] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the utility model as a whole.

[0012] Figure 2 It is an axonometric view of the weighing hopper of the utility model.

[0013] Figure 3 It is an axonometric view of the heavy hopper chute of the utility model.

[0014] Figure 4 It is an axonometric view of the weighing hopper of the utility model.

[0015] Figure 5 It is an axonometric view of the feed pipe of the utility model.

[0016] Figure 6 It is an axonometric view of the weighing cylinder of the utility model.

[0017] Figure 7 It is an axial section view of the weighing hopper of the utility model.

[0018] Figure 8 It is an axial section view of the heavy hopper chute of the utility model.

[0019] exist Figures 1 to 8 , the correspondence between the component names or lines and the figure numbers is: conveyor belt 1, unpacking machine 2, air flow conveying pipeline 3, unpacking machine transition hopper 4, weighing hopper 5, weighing cylinder 501, discharge valve 502, through hole 503, feed pipe 504, support plate 505, pressure sensor 506, weighing hopper chute 6, pouring trough 601, feed hole 602, backflow prevention plate 603, inclined plate 604, alkali preparation tank 7. DETAILED DESCRIPTION

[0020] Please refer to Figures 1 to 8 ;

[0021] This embodiment provides a device for automatically feeding soda powder when preparing soda solution in lithium carbonate production, referring to Figure 1The conveyor belt 1 is arranged at 45 degrees, the top of the conveyor belt 1 is connected to the feeding port of the unpacking machine 2, the discharging port of the unpacking machine transition hopper 4 of the unpacking machine 2 is connected to the air flow conveying pipeline 3 of the air flow conveying system, and the other end of the air flow conveying pipeline 3 is connected to at least two weighing hoppers 5, and a weighing hopper chute 6 is arranged just below the discharging port of the weighing hopper 5, and the weighing hopper chute 6 is fixed on the alkali preparation tank 7;

[0022] In the specific implementation, a conveyor belt with an inclination of 45° is used to convey the bagged soda ash powder to the unpacking machine 2;

[0023] An air flow conveying system, in which the discharging port of the transition hopper of the unpacking machine 2 is connected to the air flow conveying system, is used for conveying the soda ash powder;

[0024] A weighing hopper 5, the air flow conveying system is connected to the feed port of the weighing hopper, and is used to weigh the weight of the soda ash powder;

[0025] Alkali preparation tank 7, the weighing hopper chute outlet of the weighing hopper is connected to the alkali preparation tank, which is used to prepare soda ash solution;

[0026] During automatic loading, unpacking, feeding and weighing, the bagged soda ash powder is sent to the unpacking machine 2 through a 45° inclined conveyor belt 1, and the discharge port of the unpacking machine 2 is connected to the air flow conveying system, and the soda ash powder is alternately conveyed to the two weighing hoppers 5 through the air flow. When the feeding amount of one of the weighing hoppers 5 reaches the set feeding amount each time, the air flow conveying system automatically switches to the other weighing hopper 5 to start the feeding operation; at this time, the weighing hopper 5 that has completed the feeding starts automatic metering and discharging, and the weighing hopper chute 6 provides the soda ash solution to the alkali preparation tank 7; the feeding and metering of the weighing hopper 5 are operated alternately, and when the cumulative amount of the weighed soda ash powder reaches the total set value, the air flow conveying system stops feeding; when the material in the weighing hopper 5 is discharged, the entire automatic feeding process is completed;

[0027] The device realizes automatic feeding, weighing, unpacking and feeding, which improves feeding efficiency, reduces dust, and reduces the harm to human body caused by manual operation;

[0028] The bagged soda ash powder is sent to the unpacking machine 2 through a 45° inclined conveyor belt 1. The discharge port of the unpacking machine 2 is connected to the air flow conveying system. The soda ash powder is alternately conveyed to two weighing hoppers 5 through the air flow. When the feeding amount of one of the weighing hoppers 5 reaches the set feeding amount each time, the air flow conveying system automatically switches to the other weighing hopper 5 to start the feeding operation; at this time, the weighing hopper 5 that has completed the feeding starts automatic metering and discharging work, and the weighing hopper chute 6 provides the soda ash solution to the alkali preparation tank 7; the feeding and metering of the weighing hopper 5 are operated alternately, and when the cumulative amount of the weighed soda ash powder reaches the total set value, the air flow conveying system stops feeding; when the material in the weighing hopper 5 is discharged, the entire automatic feeding process is completed; this method has the characteristics of high efficiency, continuous feeding, accurate metering, no dust, and no harm to the human body;

[0029] For further reference, Figures 4 to 7 The weighing hopper 5 includes a weighing cylinder 501, a through hole 503 with a diameter smaller than that of the weighing cylinder 501 is provided on the top of the weighing cylinder 501, a feed pipe 504 is provided in the through hole 503, a support plate 505 is provided at the bottom of the feed pipe 504, four pressure sensors 506 are provided on the surface of the support plate 505, and the probes of the pressure sensors 506 are supported on the lower surface of the top wall of the weighing cylinder 501, a discharge valve 502 is provided at the bottom of the weighing cylinder 501 and the middle of the feed pipe 504, the top of the feed pipe 504 is connected to the air flow conveying pipeline 3, and the bottom of the weighing cylinder 501 is connected to the weighing hopper chute 6;

[0030] In specific implementation, when weighing, the discharge valve 502 located at the bottom of the weighing cylinder 501 is closed, and the discharge valve 502 located on the feed pipe 504 is opened, so that the raw material transported from the air flow conveying pipe 3 enters the feed pipe 504 and enters the interior of the weighing cylinder 501. When weighing, the weighing cylinder 501 is pressed downward, so that the pressure sensor 506 located on the support plate 505 checks the quality change brought about by the raw materials loaded into the weighing cylinder 501. When the set value is reached, the upper discharge valve 502 is closed, and the lower discharge valve 502 is opened, so that the raw material falls from the bottom of the weighing cylinder 501 into the weighing hopper chute 6, and is accurately weighed by the pressure sensor 506.

[0031] For further reference, Figure 2 , pouring grooves 601 are provided on both sides of the upper surface of the weighing hopper chute 6, and a feed hole 602 corresponding to the weighing hopper 5 is provided on the top of the weighing hopper chute 6, and the bottom of the weighing cylinder 501 is inserted into the feed hole 602;

[0032] In a specific implementation, when the solution is added, the solution is poured from the pouring tank 601 so that preliminary mixing can be performed inside the weighing hopper chute 6.

[0033] For further reference, Figure 8 , both sides of the inclined inner wall of the weighing hopper chute 6 are provided with anti-backflow plates 603, the anti-backflow plates 603 and the inclined inner wall of the weighing hopper chute 6 form a V-shaped groove, and the lower surface of the side of the pouring trough 601 close to the feed hole 602 is provided with an inclined inclined plate 604, and the end of the inclined plate 604 is placed in the middle of the groove;

[0034] In specific implementation, by setting the anti-backflow plate 603 and the inclined plate 604, it is easy to pour into the groove and flow into the weighing hopper chute 6 only when it is easy to pass through the groove, and a structure to prevent dust from flying is easily formed in the groove.

[0035] Furthermore, the air delivery pipeline 3, the weighing hopper 5, the weighing hopper chute 6 and the alkali preparation tank 7 are all made of stainless steel;

[0036] In practical implementation, stainless steel has a smooth surface and is relatively inexpensive;

[0037] The conveyor belt 1, the unpacking machine 2, the air flow conveying system, the pressure sensor 506, the discharge valve 502, and the alkali preparation tank 7 all use existing technologies.

Claims

1. An automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production, characterized in that: The conveyor belt (1) is arranged at a 45-degree angle, the top of the conveyor belt (1) is connected to the feed port of the unpacking machine (2), the discharge port of the unpacking machine transition hopper (4) of the unpacking machine (2) is connected to an air flow conveying pipeline (3) of an air flow conveying system, the other end of the air flow conveying pipeline (3) is connected to at least two weighing hoppers (5), a weighing hopper chute (6) is provided directly below the discharge port of the weighing hopper (5), and the weighing hopper chute (6) is fixed on the alkali preparation tank (7).

2. According to claim 1, a device for automatically feeding soda ash powder when preparing soda ash solution in lithium carbonate production, characterized in that: The weighing hopper (5) comprises a weighing cylinder (501), the top of which is provided with a through hole (503) having a diameter smaller than that of the weighing cylinder (501), a feeding pipe (504) being provided in the through hole (503), a supporting plate (505) being provided at the bottom end of the feeding pipe (504), four pressure sensors (506) being provided on the surface of the supporting plate (505), the probes of the pressure sensors (506) being supported on the lower surface of the top wall of the weighing cylinder (501), a discharge valve (502) being provided at the bottom of the weighing cylinder (501) and the middle of the feeding pipe (504), the top end of the feeding pipe (504) being connected to the air flow conveying pipeline (3), and the bottom end of the weighing cylinder (501) being connected to the weighing hopper chute (6).

3. The automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production according to claim 2, characterized in that: Both sides of the upper surface of the weighing hopper chute (6) are provided with pouring grooves (601), and the top of the weighing hopper chute (6) is provided with a feeding hole (602) corresponding to the weighing hopper (5), and the bottom of the weighing cylinder (501) is inserted into the feeding hole (602).

4. The automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production according to claim 3, characterized in that: The inclined inner walls on both sides of the weighing hopper chute (6) are provided with anti-backflow plates (603), and the anti-backflow plates (603) and the inclined inner walls of the weighing hopper chute (6) form a V-shaped groove. The lower surface of the side of the pouring trough (601) close to the feed hole (602) is provided with an inclined inclined plate (604), and the end of the inclined plate (604) is placed in the middle of the groove.

5. The automatic feeding device for soda ash powder when preparing soda ash solution in lithium carbonate production according to claim 4, characterized in that: The air flow conveying pipeline (3), the weighing hopper (5), the weighing hopper chute (6) and the alkali preparation tank (7) are all made of stainless steel.

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