Automatic metering device for solid dosing
By using dry compressed air to maintain the positive pressure state of the silo and the star-type feeding valve in the solid powder dosing equipment, the problems of powder output residue and moisture absorption are solved, and higher metering accuracy is achieved.
Patent Information
- Application Number
- CN202421167879.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
Existing solid powder dosing equipment is prone to residue when the powder is output, and the powder is prone to absorb moisture and lead to agglomeration, resulting in inaccurate measurement and deviation in concentration.
An automatic metering device for solid dosing is designed to maintain the positive pressure state in the silo using dry compressed air to prevent powder from agglomerating, and a quantitative output is achieved through a star-shaped feeding valve. During dosing, the dry air removes air near the powder outlet. , ensure powder fluidity and metering accuracy.
It improves the fluidity of the powder, prevents the residue and moisture absorption and agglomeration of the powder, and enhances the accuracy of dosing.
Smart Images
Figure CN222311557U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of dosing metering devices, and in particular to an automatic metering device for solid dosing. Background Art
[0002] Solid powder dosing equipment usually includes a storage barrel, an agitator arranged in the storage barrel, a vibrator arranged outside the storage barrel, a material quantitative valve and a weighing module, etc. The purpose of setting the agitator is to prevent the solid powder from agglomerating in the barrel, thereby forming phenomena such as hardening and arching. The function of the vibrator is to prevent the moist material in the barrel from sticking to the wall and being retained in the barrel. The function of the material quantitative valve is to quantitatively output the powder material. The function of the weighing module is to weigh and calculate the output material concentration. Taking ammonium bicarbonate powder dosing as an example, although the use of mechanical stirring and vibration can prevent the powder in the barrel from agglomerating and sticking to the wall to a certain extent, the overall fluidity of the powder in the barrel is poor, and it is easy to remain during the transportation process, resulting in inaccurate metering or large deviations in the dosing concentration in the dosing device. In addition, the powder easily absorbs moisture in the air and deliquesces and agglomerates, losing its activity. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an automatic metering device for solid dosing, which has the advantages of good fluidity of powder in the bin and can effectively prevent the powder in the bin from absorbing moisture.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] The automatic metering device for solid dosing is characterized in that it includes: a silo bracket; a storage silo connected to the silo bracket and having a discharge port at the bottom of the storage silo; a discharge barrel connected to the discharge port and having a star-shaped feeding valve installed on the discharge barrel; a discharge funnel connected to the lower end of the discharge barrel and having a powder outlet at the lower end of the discharge funnel; and a weighing module connected between the storage silo and the silo bracket, for weighing the weight of the powder in the storage silo; wherein the top of the storage silo has an upper dry compressed air inlet, and the discharge funnel has a lower dry compressed air inlet.
[0006] In the above scheme, after the material distribution agent is added to the storage bin, before discharging, the air source is divided into two paths, one of which is connected to the upper dry compressed air inlet, and the other is connected to the lower dry compressed air inlet. The air source is started to inject dry compressed air into the bin, so that the bin maintains a positive pressure state and the powder in the bin is in a fluidized state. Dry compressed air is injected into the liquid outlet funnel to discharge the air near the powder outlet, and then the star-shaped feeding valve is started to realize the discharging and dosing of the drug to the designated container. At the same time, the drug output is determined according to the output signal of the weighing module, and then the drug addition concentration is determined. Compared with the existing technology, this scheme not only has good fluidity of the powder in the bin, but also is not easy to produce powder residue during discharging, and the dry compressed air can prevent the powder from contacting with the external gas, avoid moisture absorption and agglomeration of the powder, and improve the accuracy of drug dosing.
[0007] In order to optimize the above technical solutions, the following technical measures are also taken:
[0008] As a preferred embodiment, the storage bin includes a bin body and a sealed bin cover, the upper end of the bin body is provided with a feeding port, and the sealed bin cover is freely opened and closed to cover the feeding port.
[0009] As a preferred embodiment, the upper drying compressed air inlet is arranged on the top of the sealing chamber cover.
[0010] As a preferred embodiment, an air inlet branch pipe is obliquely provided on the side wall of the discharge funnel, the air inlet branch pipe is communicated with the inner cavity of the discharge funnel, and the lower drying compressed air inlet is formed at the end of the air inlet branch pipe.
[0011] As a preferred embodiment, a butterfly valve is further provided on the discharge barrel, and the butterfly valve is located below the star-shaped feeding valve.
[0012] As a preferred embodiment, a mounting seat is provided on the side wall of the storage silo, and the weighing module is connected between the mounting seat and the silo bracket.
[0013] As a preferred embodiment, the storage bin is in the shape of a funnel with a large diameter at the upper end and a small diameter at the lower end. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.
[0015] Figure 1 is a structural schematic diagram of embodiment 1 (I);
[0016] Figure 2 is a structural schematic diagram of embodiment 1 (II);
[0017] Reference numerals:
[0018] Storage silo 1; silo body 11; feeding port 111; discharge port 112; mounting seat 113; sealed silo cover 12; upper drying compressed air inlet 121; silo cover sealing assembly 122; discharge barrel 2; star-shaped feeding valve 21; first drive mechanism 22; pneumatic butterfly valve 23; second drive mechanism 24; discharge hopper 25; lower drying compressed air inlet 251; powder outlet 252; silo bracket 3; weighing module 4. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0021] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall be the common meanings understood by people with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the utility model patent specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limit, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 utility model.
[0022] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.
[0023] Embodiment 1:
[0024] The embodiments of the present application provide an automatic metering device for solid dosing, which aims to solve the problems in the prior art that powder in the silo or barrel of the dosing metering device is easy to remain when output and the powder is easy to absorb moisture and agglomerate. It not only improves the fluidity of the powder during output and makes the powder less likely to be retained, but also can effectively prevent the powder from contacting the outside air during the transportation process, causing moisture absorption and agglomeration, thereby further improving the accuracy of dosing metering.
[0025] See also Figure 1 and 2 The automatic metering device for solid dosing includes a silo support 3, a 50L storage silo 1, a discharge barrel 2 and a weighing module 4, wherein the storage silo 1 is connected to the silo support 3, and the bottom of the storage silo 1 has a discharge port 112, the discharge barrel 2 is connected to the lower end of the discharge port 112, and a star-shaped feeding valve 21 is installed on the discharge barrel 2, and a discharge funnel 25 is connected to the lower end of the discharge barrel 2, and the lower end of the discharge funnel 25 has a powder outlet 252, and the weighing module 4 is connected between the storage silo 1 and the silo support 3, and is used to weigh the weight of the powder in the storage silo 1, wherein the top of the storage silo 1 has an upper dry compressed air inlet 121, and the discharge funnel 25 has a lower dry compressed air inlet 251. Preferably, the 50L storage silo 1 is a funnel with a large diameter at the upper end and a small diameter at the lower end. Preferably, in the longitudinal direction, the axes of the storage bin 1, the discharge cylinder 2 and the discharge funnel 25 substantially coincide with each other to ensure smooth and efficient powder discharge process.
[0026] Specifically, the storage bin 1 includes a bin body 11 and a sealed bin cover 12, the upper end of the bin body 11 is provided with a feeding port 111, the sealed bin cover 12 is freely opened and closed to cover the feeding port 111, and a bin cover sealing component 122 for locking the sealed bin cover 12 on the bin body 11 is provided on the feeding port 111. Here, the sealed bin cover 12 can be rotatably connected to the bin body 11 by a hinge, or can be detachably connected to the bin body 11, which is not limited here.
[0027] Specifically, the upper drying compressed air inlet 121 is disposed on the top of the sealing chamber cover 12 .
[0028] Specifically, an air inlet branch is obliquely provided on the side wall of the discharge funnel 25, and the air inlet branch is distributed in a Y shape with the discharge funnel 25. The air inlet branch is communicated with the inner cavity of the discharge funnel 25, and the lower dry compressed air inlet 251 is formed at the end of the air inlet branch. When the pneumatic butterfly valve 23 is closed, the dry compressed air inlet 251 can discharge the air in the lower section of the discharge barrel 2 and the discharge funnel 25, thereby preventing outside air from entering the storage bin 1 through the pneumatic butterfly valve 23 and the star-shaped feeding valve 21 during the discharge process.
[0029] Specifically, the discharge barrel 2 is also provided with a pneumatic butterfly valve 23, and the discharge barrel 2 is provided with a second driving mechanism 24 for driving the pneumatic butterfly valve 23 to operate. The pneumatic butterfly valve 23 is located below the star-shaped feeding valve 21, and the discharge barrel 2 is provided with a first driving mechanism 22 for driving the star-shaped feeding valve 21 to operate. The setting of the star-shaped feeding valve 21 can ensure that the material discharged from the storage bin 1 is output quantitatively, and the function of the pneumatic butterfly valve 23 is to control the flow rate and pressure of the material when it is output.
[0030] Specifically, the silo bracket 3 is L-shaped, with legs provided at the bottom, a mounting seat 113 is welded on the side wall of the storage silo 1, and the weighing module 4 is connected between the mounting seat 113 and the silo bracket 3 by bolts.
[0031] In this embodiment, under normal working conditions, the material distribution agent is manually added into the 50L storage bin 1 through the feeding port 111. Before discharging, the air source is divided into two paths, one of which is connected to the upper dry compressed air inlet 121, and the other is connected to the lower dry compressed air inlet 251. Then the air source is started to inject dry compressed air into the bin, so that the bin maintains a positive pressure state and the powder in the bin is in a fluidized state, and dry compressed air is injected into the liquid outlet funnel 25 to discharge the air near the powder outlet 252, and then the star-shaped feeding valve 21 is started to realize the discharging and dosing of the drug to the designated container, and at the same time, the drug output is determined according to the output signal of the weighing module 4, and then the drug addition concentration is determined. Not only does the powder in the bin have good fluidity and is not easy to produce powder residue during discharging, but the dry compressed air can prevent the powder from contacting with the external gas, avoid moisture absorption and agglomeration of the powder, and improve the accuracy of drug dosing measurement.
[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. Automatic metering device for solid dosage, characterized in that: include: Silo bracket; A material storage bin is connected to the material storage bin support and has a discharge port at the bottom of the material storage bin; A discharge barrel connected to the discharge port, and a star-shaped feeding valve is installed on the discharge barrel; A discharge funnel connected to the lower end of the discharge barrel, and having a powder outlet at the lower end of the discharge funnel; and The weighing module is connected between the storage bin and the bin support and is used to weigh the powder in the storage bin; The top of the storage bin is provided with an upper drying and compressed air inlet, and the discharge funnel is provided with a lower drying and compressed air inlet.
2. The automatic metering device for solid medicine administration according to claim 1, characterized in that: The material storage bin comprises a bin body and a sealed bin cover. The upper end of the bin body is provided with a feeding port, and the sealed bin cover is freely opened and closed to cover the feeding port.
3. The automatic metering device for solid medicine administration according to claim 2, characterized in that: The upper drying compressed air inlet is arranged on the top of the sealing chamber cover.
4. The automatic metering device for solid medicine administration according to claim 2, characterized in that: An air inlet branch pipe is obliquely arranged on the side wall of the discharge funnel, the air inlet branch pipe is communicated with the inner cavity of the discharge funnel, and the lower drying compressed air inlet is formed at the end of the air inlet branch pipe.
5. The automatic metering device for solid medicine administration according to claim 1, characterized in that: The discharge barrel is also provided with a butterfly valve, and the butterfly valve is located below the star-shaped feeding valve.
6. The automatic metering device for solid medicine administration according to claim 1, characterized in that: A mounting seat is arranged on the side wall of the storage bin, and the weighing module is connected between the mounting seat and the bin bracket.
7. The automatic metering device for solid medicine administration according to claim 1, characterized in that: The storage bin is in the shape of a funnel with a large diameter at the upper end and a small diameter at the lower end.