Automatic feeding device for powder medicament

Abstract

The utility model provides an automatic feeding device for a powder medicament. The automatic feeding device comprises a stock bin, a feeder, a heating device, a premixer, a water ejector and a water supply unit, a solid powder medicament drying chamber is arranged in the heating device; the premixer comprises a first water-powder mixing chamber; the stock bin, the feeder, the solid powder medicament drying chamber and the first water-powder mixing chamber are communicated in sequence; the water supply unit comprises a first water supply pipeline communicated with the premixer and a second water supply pipeline communicated with the water ejector, and an opening of a water inlet of the premixer is formed in the tangential direction of the cross section of the first water-powder mixing chamber; the first water-powder mixing chamber is communicated with a second water-powder mixing chamber in the water ejector, and the water ejector is communicated with a feeding point through a water conveying pipeline. According to the device, blockage of the device and a conveying pipeline caused by caking or non-uniform mixing of solid powder medicaments can be prevented, the maintenance cost caused by pause of medicament feeding is reduced, the continuity of solid medicament powder feeding is ensured, the feeding amount can also be accurately controlled, the number of equipment is small, and the occupied space is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field especially relates to a powder medicament automatic adding device. BACKGROUND

[0002] Coagulation sedimentation method is a kind of technology process that is widely used in water treatment process, has the advantages such as simple process, economic and efficient, easy operation etc. The inorganic flocculant often used in industry is artificial synthesis polyiron, polyaluminum flocculant, and this kind of flocculant has certain defects in use, for example: 1) the metal ion content in flocculant is high, and usually exists in polymerization state, easy to cause subsequent membrane pollution and blockage in water;2) polyiron, polyaluminum flocculant has certain biological toxicity, and use in certain specific occasions will be restricted;3) artificial synthesis polyiron, polyaluminum inorganic flocculant is expensive, leading to the increase of water treatment cost. Therefore, at present, using natural inorganic mineral material to be modified into economic, efficient, safe water treatment flocculant has become one of the important research directions of researchers at home and abroad. Practice has proved that inorganic mineral flocculant not only has the treatment effect equivalent to polyiron, polyaluminum flocculant, but also has better settling velocity and extremely small floc volume, and there is basically no residual material in water, which is a kind of excellent non-toxic natural mineral flocculant, and has good application prospect in water treatment.

[0003] At present, since inorganic mineral flocculant belongs to solid powder type medicament, and is basically not dissolved in water, at present, it is mostly added by manual operation or using adding device, but the existing powder medicament adding mode, on the one hand, solid powder type medicament is easy to clog or mix unevenly and block the device and conveying pipeline, and the continuity of medicament adding is not good, on the other hand, the adding amount cannot be accurately controlled, and the adding efficiency is not high. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies existing in the prior art, the utility model aims at providing a kind of powder medicament automatic adding device, solve the problem that solid powder is easy to block and clog in the existing powder medicament adding mode and cannot accurately control adding amount.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of powder medicament automatic adding device, including stock bin, feeder, heating device, premixer, water jet and water supply unit;

[0007] The discharge outlet of the stock bin is communicated with the feeder;

[0008] The heating device is internally provided with solid powder medicament drying chamber, and the feed inlet of the solid powder medicament drying chamber is communicated with the discharge outlet of the feeder;

[0009] The premixer comprises a first water-powder mixing chamber, a premixer feed inlet, a premixer discharge outlet and a premixer water inlet, the first water-powder mixing chamber is communicated with the discharge outlet of the solid powder medicament drying chamber through the premixer feed inlet;

[0010] The water supply unit comprises a first water supply pipeline and a second water supply pipeline, the water outlet of the first water supply pipeline is communicated with the premixer water inlet, and the opening of the premixer water inlet is arranged in the tangential direction of the cross section of the first water-powder mixing chamber;

[0011] The water injector is arranged on the second water supply pipeline, the water injector comprises a second water-powder mixing chamber, a water injector feed inlet, a water injector water inlet and a water injector liquid outlet, the first water-powder mixing chamber is communicated with the second water-powder mixing chamber in sequence through the premixer discharge outlet and the water injector feed inlet, and the water injector liquid outlet is communicated with the dosing point through a water conveying pipeline.

[0012] Further, the feeder comprises a motor, a speed reducer and a screw conveying shaft, the discharge outlet of the screw conveying shaft is communicated with the feed inlet of the solid powder medicament drying chamber, and the motor controls the conveying amount of the screw conveying shaft through frequency conversion.

[0013] Further, a detection sensor assembly is further included, the detection sensor assembly comprises a material level sensor, a pressure sensor and a flow sensor, the material level sensor is arranged at the lower part of the bin, and the pressure sensor and the flow sensor are arranged on the second water supply pipeline and located on the side of the water injector water inlet.

[0014] Further, the bin comprises a first bin and a second bin, a powder inlet is arranged at the top of the first bin, the first bin is located above the second bin and is communicated with the second bin, and the discharge outlet of the second bin is communicated with the feeder.

[0015] Further, the outer wall of the second bin is provided with an anti-arching vibrator.

[0016] Further, the second bin is inverted conical.

[0017] Further, the top of the first bin is provided with a bag-type dust collector.

[0018] Further, the water supply unit further comprises a centrifugal pump, the water outlet of the centrifugal pump is communicated with the water inlet of the first water supply pipeline and the water inlet of the second water supply pipeline.

[0019] Further, the first water supply pipeline is sequentially provided with a filter and an electromagnetic valve in the water supply direction.

[0020] Further, a pneumatic valve is arranged on the pipeline through which the premixer communicates with the water jet.

[0021] To sum up, compared with the prior art, the utility model has at least the following beneficial effects:

[0022] The powder medicament automatic feeding device comprises a stock bin, a feeder, a heating device, a premixer, a water jet and a water supply unit, the discharge port of the stock bin is communicated with the feeder, the inside of the heating device is provided with a solid powder medicament drying chamber, the feeding port of the solid powder medicament drying chamber is communicated with the discharge port of the feeder, the premixer comprises a first water-powder mixing chamber, a premixer feeding port, a premixer discharge port and a premixer water inlet, the first water-powder mixing chamber is communicated with the discharge port of the solid powder medicament drying chamber through the premixer feeding port, the water outlet of the first water supply pipeline is communicated with the premixer water inlet, and the opening of the premixer water inlet is arranged in the tangential direction of the cross section of the first water-powder mixing chamber, the water jet is arranged on the second water supply pipeline, the water jet comprises a second water-powder mixing chamber, a water jet feeding port, a water jet water inlet and a water jet liquid outlet, the first water-powder mixing chamber is communicated with the second water-powder mixing chamber in sequence through the premixer discharge port and the water jet feeding port, and the water jet liquid outlet is communicated with a feeding point through a water supply pipeline. Compared with the existing powder medicament feeding mode, the device can prevent the clogging of the feeding device and the conveying pipeline caused by the caking or uneven mixing of the solid powder medicament, reduce the cost and workload of maintenance caused by feeding suspension, ensure the continuity of the solid medicament powder feeding, accurately control the feeding amount, and have few equipment and small occupied space. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 It is a structure diagram of the powder medicament automatic feeding device provided in one embodiment of the utility model.

[0025] MARK NUMBER EXPLANATION:

[0026] 1, stock bin;11, first stock bin;111, bag-type dust collector;12, second stock bin;121, anti-arch vibration shaker;

[0027] 2. feeder; 21. motor; 22. speed reducer; 23. screw conveying shaft;

[0028] 3. heating device; 31. solid powder medicament drying chamber;

[0029] 4. premixer; 41. first water-powder mixing chamber; 42. premixer feed inlet; 43. premixer discharge outlet; 44. premixer water inlet;

[0030] 5. water supply unit; 51. first water supply pipeline; 511. filter; 512. electromagnetic valve; 52. second water supply pipeline; 53. centrifugal pump;

[0031] 6. water jet; 61. second water-powder mixing chamber; 62. water jet feed inlet; 63. water jet water inlet; 64. water jet liquid discharge outlet; 65. pneumatic valve;

[0032] 7. water conveying pipeline;

[0033] 81. material level sensor; 82. pressure sensor; 83. flow sensor. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] As shown in the accompanying drawings Figure 1As shown, a powder medicament automatic dosing device includes a bin 1, a feeder 2, a heating device 3, a premixer 4, a water injector 6 and a water supply unit 5. The bin 1 is used to store solid powder medicament, which can be loaded by an externally connected feeding machine or manually. The discharge port of the bin 1 is in communication with the feeder 2, which is used to accurately deliver the solid powder medicament from the bin 1 to the heating device 3 according to the set dosing amount. The heating device 3 is internally provided with a solid powder medicament drying chamber 31, the inlet of which is in communication with the discharge port of the feeder 2, so that the solid powder medicament is dried before being mixed with water, preventing clumping due to moisture during powder delivery and ensuring that the solid powder medicament is completely dry before being mixed with water. The heating method can be direct heating of the solid powder medicament drying chamber 31 or adding heating components in the solid powder medicament drying chamber 31, etc. which can dry the solid powder medicament, without limitation. Preferably, an electric heating rod is added and inserted into the solid powder medicament in the solid powder medicament drying chamber 3 for heating and drying. The premixer 4 is used to preliminarily mix the dried solid powder medicament with water, avoiding clumping or powder accumulation in the water injector 6 due to uneven mixing of the solid medicament powder, and preventing the water injector 6 from being blocked. The premixer 4 includes a first water-powder mixing chamber 41, a premixer inlet 42, a premixer outlet 43 and a premixer water inlet 44. The first water-powder mixing chamber 41 is in communication with the discharge port of the solid powder medicament drying chamber 31 through the premixer inlet 42, and the cross section of the first water-powder mixing chamber 41 is preferably circular or elliptical. The water supply unit 5 includes a first water supply pipeline 51 and a second water supply pipeline 52. The first water supply pipeline 51 is used to supply water to the premixer 4 for the first mixing of the solid powder medicament with water. The water outlet of the first water supply pipeline 51 is in communication with the premixer water inlet 44, and the opening of the premixer water inlet 44 is arranged in the tangential direction of the cross section of the first water-powder mixing chamber 41, so that the water enters tangentially when entering the first water-powder mixing chamber 41. Under the restriction of the wall of the first water-powder mixing chamber 41, a centripetal force is generated on the water flow, preventing the water from advancing in a straight line. The centripetal force causes the water flow to change direction constantly, so that the water makes circular motion along the inner wall of the first water-powder mixing chamber 41, forming a ring-shaped water flow, which is beneficial to further enhancing the uniformity of the water and solid powder medicament mixture and preventing powder accumulation at the water injector inlet 62.The second water supply pipeline 52 is used for supplying water to the water jet 6 to mix the solid powder medicament with water for the second time, and the final configuration concentration of the solid powder medicament is controlled by controlling the water supply amount to the water jet 6, the water jet 6 is arranged on the second water supply pipeline 52, and the water jet 6 comprises a second water-powder mixing chamber 61, a water jet feeding port 62, a water jet water inlet 63 and a water jet liquid outlet 64, the first water-powder mixing chamber 41 is communicated with the second water-powder mixing chamber 61 in sequence through the premixer discharge port 43 and the water jet feeding port 62, so that the preliminarily mixed water-powder mixture enters the water jet 6 for secondary mixing, the water jet liquid outlet 64 is communicated with the dosing point through the water supply pipeline 7, so as to accurately dose the secondary mixed mixture of the solid powder medicament and water into the dosing point, and the outlet pressure of the water jet 6 is high, so that the accurate dosing can be realized at a long distance. Compared with the existing powder medicament dosing mode, the device can prevent the clogging of the dosing device and the conveying pipeline caused by the caking or uneven mixing of the solid powder medicament, reduce the maintenance cost and labor cost of device clogging maintenance, ensure the continuity of the solid medicament powder dosing, accurately control the dosing amount, and the device has the advantages of less equipment quantity, small occupied space and less post-maintenance workload.

[0038] Specifically, the operation process of the powder medicament automatic dosing device is as follows: when the device starts to start, the solid powder medicament in the stock bin 1 falls into the feeder 2, the feeder 2 transmits the solid powder medicament to the solid powder medicament drying chamber 31 in the heating device 3 according to the set feeding amount for drying, and the dried solid powder medicament enters the first water-powder mixing chamber 41 of the premixer 4. At the same time, the first water supply pipeline 51 of the water supply unit 5 starts to supply water, and the water enters the first water-powder mixing chamber 41 from the premixer water inlet 44. In the first water-powder mixing chamber 41, the solid powder medicament is preliminarily mixed under the action of the annular water flow. Then, the preliminarily mixed solid powder medicament and water flow out from the premixer discharge port 43, enter the second water-powder mixing chamber 61 of the water jet 6 through the water jet feeding port 62. At the same time, the second water supply pipeline 52 of the water supply unit 5 supplies water to the water jet 6 according to the set water inlet amount, and the solid powder medicament and water are deeply mixed in the second water-powder mixing chamber 61 according to the set proportion, to form a uniform solid powder medicament solution. Finally, the solid powder medicament solution is ejected from the water jet liquid outlet 64 and accurately conveyed to the dosing point through the water supply pipeline 7, to complete the automatic dosing process of the powder medicament.

[0039] In some embodiments of the utility model, the feeder 2 includes motor 21, speed reducer 22 and screw conveying shaft 23, the cooperation of motor 21 and speed reducer 22 can accurately control the rotating speed of screw conveying shaft 23, so that feeder 2 can be transported according to the set feeding amount. The discharge port of screw conveying shaft 23 is communicated with the feed inlet of solid powder medicament drying chamber 31, and the solid powder medicament output by screw conveying shaft 23 directly enters solid powder medicament drying chamber 31 for drying. Moreover, motor 21 preferably controls the feeding amount of screw conveying shaft 23 by frequency conversion, to further accurately control the solid powder medicament conveying amount according to the actual dosing demand, avoiding the waste or insufficient dosing of solid powder medicament.

[0040] In some embodiments of the utility model, the powder medicament automatic dosing device further includes a detection sensor assembly, which includes a level sensor 81, a pressure sensor 82 and a flow sensor 83. The level sensor 81 is arranged at the lower part of the silo 1 and is used for monitoring the remaining amount of solid powder medicament in the silo 1, and sends a signal to the worker when the solid powder medicament level in the silo 1 drops to a certain extent, avoiding the interruption of the dosing work due to insufficient solid powder medicament during the dosing process, and ensuring the continuity of the solid powder medicament dosing. The pressure sensor 82 and the flow sensor 83 are arranged on the second water supply pipeline 52 and located on the side of the water injector water inlet 63, and by monitoring the flow and pressure of the water supply to the water injector 6 in real time, the water supply amount to the water injector 6 can be accurately adjusted according to the preset mixing ratio of solid powder medicament and water, so as to ensure that the concentration of the solid powder medicament solution meets the pre-set value.

[0041] In some embodiments of the utility model, the silo 1 includes a first silo 11 and a second silo 12, the first silo 11 is provided with a powder inlet at the top, the first silo 11 is located above the second silo 12 and is communicated with the second silo 12, and the discharge port of the second silo 12 is communicated with the feeder 2. The solid powder medicament enters the second silo 12 through the powder inlet of the first silo 11, and when the device is turned on, the powder is fed into the feeder 2 through the discharge port of the second silo 12.

[0042] In some embodiments of the utility model, due to the poor flowability of solid powder medicament or the large humidity of the working environment, powder agglomeration may occur in the silo 11, which may block the discharge port of the silo 1 when the solid powder medicament is fed into the feeder 2. Therefore, the outer wall of the lower part of the silo 1, i.e. the outer wall of the second silo 12, is provided with an anti-arching vibrator 121, which periodically vibrates to keep the solid powder medicament in the silo 1 in a relatively loose state, thereby enhancing the flowability of the solid powder medicament and ensuring the continuity of the feeding to the feeder 2, and also avoiding the failure of the dosing device caused by the blockage of the solid powder medicament, effectively reducing the maintenance cost and improving the working efficiency of the dosing device.

[0043] In some embodiments of the present application, the second bin 12 is inverted conical, which can guide the solid powder medicament to flow to the discharge port of the second bin 12 more easily and avoid the residue of the solid powder medicament in the feeding process.

[0044] In some embodiments of the present application, the particle diameter of the solid powder medicament is small, and a large amount of dust is generated when the solid powder medicament is added to the first bin 11. Therefore, the top of the first bin 11 is provided with a bag dust collector 111, which can effectively collect the dust generated by the solid powder medicament, thereby protecting the staff and equipment. In addition, the collected solid powder medicament can be recycled and re-injected into the bin 1, improving the utilization rate of the solid powder medicament and reducing the operating cost to a certain extent.

[0045] In some embodiments of the present application, the water supply unit 5 further comprises a centrifugal pump 53 for providing water supply power. The water outlet of the centrifugal pump 53 is in communication with the water inlet of the first water supply pipeline 51 and the water inlet of the second water supply pipeline 52, which can continuously and stably deliver water to the two water supply pipelines, avoiding the problems of uneven mixing of the solid powder medicament and water, interruption of addition, etc. due to insufficient or interrupted water supply.

[0046] In some embodiments of the present application, the first water supply pipeline 51 is sequentially provided with a filter 511 and an electromagnetic valve 512 along the water supply direction. The filter 511 is used to remove impurities such as silt and suspended matter that may exist in the water supply, preventing the impurities from entering the first water-powder mixing chamber 41 together with the water supply and mixing with the solid powder medicament, which affects the mixing quality and mixing effect of the solid powder medicament and water, or clogs the inlets and outlets in the pipeline or device. The electromagnetic valve 512 is used to accurately control the on-off and flow of the filtered water supply,

[0047] In some embodiments of the present application, a pneumatic valve 65 is arranged on the pipeline through which the premixer 4 and the water jet 6 are communicated. The pneumatic valve 65 is connected with a compressed air pipeline (not shown in the figure). After the premixer completes the preliminary mixing of the solid powder medicament and water, the compressed air pipeline introduces compressed air to open the pneumatic valve 65. At this time, the solid powder medicament and water in the premixer 4 enter the second water-powder mixing chamber 61 in the water jet 6 through the pneumatic valve 65 for secondary mixing.

[0048] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by those skilled in the art based on the present application are within the scope of protection of the present application.

Claims

1. A powder medicament automatic dosing device, characterized by, The device comprises a hopper, a feeder, a heating device, a premixer, a water injector and a water supply unit. The discharge port of the hopper is communicated with the feeder. The heating device is internally provided with a solid powder medicament drying chamber, and the feeding port of the solid powder medicament drying chamber is communicated with the discharge port of the feeder. The premixer comprises a first water-powder mixing chamber, a premixer feeding port, a premixer discharge port and a premixer water inlet port, and the first water-powder mixing chamber is communicated with the discharge port of the solid powder medicament drying chamber through the premixer feeding port. The water supply unit comprises a first water supply pipeline and a second water supply pipeline, the water outlet port of the first water supply pipeline is communicated with the premixer water inlet port, and the opening of the premixer water inlet port is arranged in the tangential direction of the cross section of the first water-powder mixing chamber. The water injector is arranged on the second water supply pipeline, and the water injector comprises a second water-powder mixing chamber, a water injector feeding port, a water injector water inlet port and a water injector liquid outlet port, the first water-powder mixing chamber is communicated with the second water-powder mixing chamber in sequence through the premixer discharge port and the water injector feeding port, and the water injector liquid outlet port is communicated with the dosing point through a water conveying pipeline.

2. The powder medicament automatic dosing device according to claim 1, wherein The feeder comprises a motor, a speed reducer and a screw conveying shaft, the discharge port of the screw conveying shaft is communicated with the feeding port of the solid powder medicament drying chamber, and the motor controls the conveying amount of the screw conveying shaft through frequency conversion.

3. The powder medicament automatic dosing device according to claim 1, wherein Further comprising a detection sensor assembly, the detection sensor assembly comprises a material level sensor, a pressure sensor and a flow sensor, the material level sensor is arranged at the lower part of the hopper, and the pressure sensor and the flow sensor are arranged on the second water supply pipeline and located on the side of the water injector water inlet port.

4. The powder medicament automatic dosing apparatus according to claim 1, wherein The hopper comprises a first hopper and a second hopper, the first hopper is provided with a powder inlet port at the top, the first hopper is located above the second hopper and communicated with the second hopper, and the discharge port of the second hopper is communicated with the feeder.

5. The powder medicament automatic charging device according to claim 4, wherein The outer wall of the second hopper is provided with an anti-arching vibrator.

6. The powder medicament automatic charging device according to claim 4, wherein The second hopper is inverted conical.

7. The powder medicament automatic charging device according to claim 4, wherein The top of the first hopper is provided with a bag-type dust collector.

8. The powder medicament automatic dosing apparatus as claimed in claim 1, wherein The water supply unit further comprises a centrifugal pump, and the water outlet port of the centrifugal pump is communicated with the water inlet port of the first water supply pipeline and the water inlet port of the second water supply pipeline.

9. The powder medicament automatic dosing apparatus as claimed in claim 1, wherein The first water supply pipeline is sequentially provided with a filter and a solenoid valve in the water supply direction.

10. The powder medicament automatic dosing apparatus as claimed in claim 1, wherein A pneumatic valve is arranged on the pipeline communicated with the water injector and the premixer.

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