CN216012425U - Gunpowder weighing device with compound weighing function - Google Patents

Abstract

The utility model discloses a gunpowder weighing device with a compound weighing function, which comprises: the supporting device is provided with a primary weighing area and a secondary weighing area; the blanking device is used for adding gunpowder; the conveying device is provided with a gunpowder cup, the gunpowder cup is used for receiving gunpowder discharged by the discharging device in the primary weighing area, and the conveying device drives the gunpowder cup to be transferred to the secondary weighing area from the primary weighing area so as to weigh the gunpowder cup loaded with the gunpowder for multiple times; and the static electricity eliminating device is used for eliminating static electricity of gunpowder in the gunpowder cup subjected to primary weighing and/or secondary weighing. The influence of static electricity on gunpowder weighing can be reduced, the accuracy of gunpowder weighing is improved, and the method and the device are applied to the field of gunpowder and explosive weighing equipment.

Description

Gunpowder weighing device with compound weighing function

Technical Field

The utility model relates to the field of gunpowder and explosive weighing equipment, in particular to a gunpowder weighing device with a compound weighing function.

Background

The powder is powder, and is easy to rub with other equipment to generate static electricity in the transportation and manufacturing process, so that the powder is charged with the static electricity. For example, in the powder weighing process, an automatic powder weighing device is mostly adopted to weigh powder, but during weighing, the powder can rub against a contact part of the weighing device, the contact part can be a wall of a feed hopper, a pipe wall of a transmission pipeline and the like, the powder rubs against the wall of the hopper or the pipe wall during transmission, static electricity is generated, and the powder is charged with static electricity during weighing.

The precision of gunpowder when weighing is higher, needs to reach the milligram, and when the weighing machine is influenced by static electricity, its precision of weighing will change, leads to the measuring result inaccurate finally, influences the weighing result of gunpowder. And after weighing gunpowder many times, the weighing machine of weighing gunpowder probably breaks down, leads to its precision to change, finally obtains weighing result and shows the defective products that have reached standard but actually not reach standard, but when the weighing machine broke down, the staff of producing the line was difficult to direct notice, leads to producing the line and will produce the defective products always, seriously influences production quality.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the gunpowder weighing device with the double weighing function, which can reduce the influence of static electricity on gunpowder weighing and improve the accuracy of the gunpowder weighing.

The gunpowder weighing device with the compound weighing function according to the embodiment of the utility model comprises: the supporting device is provided with a primary weighing area and a secondary weighing area; the blanking device is used for adding gunpowder; the conveying device is provided with a gunpowder cup, the gunpowder cup is used for receiving gunpowder discharged by the discharging device in the primary weighing area, and the conveying device drives the gunpowder cup to be transferred to the secondary weighing area from the primary weighing area so as to weigh the gunpowder cup loaded with the gunpowder for multiple times.

The gunpowder weighing device with the compound weighing function provided by the embodiment of the utility model at least has the following beneficial effects:

1. carrying out secondary or multiple measurements on the initially-weighed gunpowder in the compound weighing area so as to reduce the error of gunpowder weighing and improve the precision of gunpowder weighing;

2. meanwhile, the weighing results of the primary weighing areas in the secondary weighing areas can be compared, so that whether the weighing machine in the primary weighing areas operates normally or not can be better monitored, the actual weight of the gunpowder after static electricity is eliminated can be accurately measured, the accuracy of the weighing results is ensured, and the production quality is improved.

According to some embodiments of the utility model, the powder cup further comprises a static elimination device for eliminating static of powder in the powder cup which is primarily and/or secondarily weighed.

According to some embodiments of the utility model, the static elimination device comprises at least one of a stirring device or a blanking pipe:

the stirring device is arranged between the primary weighing area and the secondary weighing area and comprises a stirring part and a lifting device, the stirring part is in transmission connection with the lifting device and extends into or separates from the gunpowder cup under the driving of the lifting device, and the stirring part is used for stirring gunpowder in the gunpowder cup to generate charges opposite to the charges carried by the gunpowder.

The discharging device is connected with the outlet of the discharging pipe, and gunpowder rubs with the discharging pipe when passing through the discharging pipe to generate charges opposite to the charges carried by the gunpowder so as to eliminate the static electricity of the gunpowder.

According to some embodiments of the utility model, the blanking device comprises a rough blanking structure for roughly adding gunpowder to the gunpowder cup and a fine blanking structure for precisely adding gunpowder to the gunpowder cup.

According to some embodiments of the present invention, the device further comprises a first damping device and a second damping device, the first damping device is disposed between the primary weighing area and the secondary weighing area, and the supporting device is provided with a mounting surface and a damping surface which are disposed opposite to each other, the primary weighing area is mounted on the mounting surface, and the second damping device is mounted on the damping surface.

According to some embodiments of the utility model, the first and second damping devices are both rubber pads.

According to some embodiments of the utility model, the conveying device comprises a rotating table and a rotation driving device, the rotating table is provided with a plurality of first installation positions which are uniformly distributed for placing the gunpowder cups, and the rotating table is in transmission connection with the rotation driving device so as to drive the first installation positions to rotate from the primary weighing area to the secondary weighing area.

According to some embodiments of the utility model, the conveying device comprises a conveying belt, a driving wheel, a driven wheel and a conveying driving device, wherein a plurality of second installation positions are arranged on the conveying belt to place the gunpowder cups, the driving wheel and the driven wheel are respectively arranged at two ends of the conveying belt and are in transmission connection with the conveying belt, and the driving wheel is in transmission connection with the conveying driving device to drive the second installation positions to move from the primary weighing area to the secondary weighing area.

According to some embodiments of the utility model, the transfer device is a robot that can grip the propellant cups to move the propellant cups from the initial weighing zone to the re-weighing zone.

According to some embodiments of the utility model, a plurality of complex weighing stations are arranged in the complex weighing area.

According to some embodiments of the utility model, the rough blanking structure comprises a rough blanking pipeline and a rough blanking bin, the rough blanking bin is communicated with the gunpowder cup through the rough blanking pipeline, the rough blanking pipeline is sequentially provided with a first perforated pulling plate, a rough adjusting rod and a second perforated pulling plate, the first perforated pulling plate, the rough adjusting rod and the second perforated pulling plate are arranged in a sliding mode along the radial direction of the rough blanking pipeline, the first perforated pulling plate and the second perforated pulling plate are used for opening or closing the rough blanking pipeline, and the rough adjusting rod is used for adjusting the flow rate of gunpowder in the rough blanking pipeline.

According to some embodiments of the utility model, the fine blanking structure comprises a rotary pipe, a rotation driving device and a blanking bin, the rotary pipe comprises a feeding end and a discharging end, the feeding end is connected with the blanking bin, the discharging end adds gunpowder into the gunpowder cup, and the rotation driving device is in transmission connection with the rotary pipe to drive the rotary pipe to rotate.

According to some embodiments of the utility model, the device further comprises a pivoting device, the pivoting device is in transmission connection with the rotating pipe, a swinging end of the pivoting device corresponds to the feeding end, and a pivoting end of the pivoting device corresponds to the discharging end, so that the feeding end of the rotating pipe is raised or lowered relative to the discharging end of the rotating pipe.

According to some embodiments of the present invention, the pivoting device includes a fixed plate, a movable plate and a swing driving device, one side of the movable plate is hinged to the fixed plate, the other side of the movable plate is in transmission connection with the swing driving device, the movable plate is driven by the swing driving device to rotate around the hinged side of the movable plate, and the rotating pipe is disposed on the movable plate.

According to some embodiments of the utility model, the inner wall of the rotating tube is provided with an anti-adhesion coating.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a powder weighing apparatus with a compound weighing function according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a powder weighing apparatus with a compound weighing function according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a static eliminating apparatus of the powder weighing apparatus with a compound weighing function according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a rough blanking structure of the powder weighing device with the double weighing function according to the embodiment of the utility model.

Reference numerals:

100-a support device; 110-primary weighing area; 120-complex weighing area;

200-a blanking device; 210-rotating the tube; 220-a rotational drive; 230-pivoting means; 240-discharging bin; 250-roughly adding a pipeline; 251-a first perforated draw plate; 252-rough adjustment lever; 253-a second perforated drawplate; 260-coarse blanking bin;

300-a transmission structure; 310-a fire medicine cup;

400-a static elimination device; 410-a stirring device; 411-a stirring section; 412-a lifting device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, 2 and 3, in some embodiments of the present invention, a powder weighing apparatus having a double weighing function includes:

the supporting device 100, the supporting device 100 is provided with a primary weighing area 110 and a secondary weighing area 120;

the blanking device 200 is used for adding gunpowder;

the conveying device 300 is provided with a gunpowder cup 310 on the conveying device 300, the gunpowder cup 310 is used for receiving gunpowder discharged by the discharging device 200 in the primary weighing area 110, and the conveying device 300 drives the gunpowder cup 310 to be transferred from the primary weighing area 110 to the secondary weighing area 120 so as to weigh the gunpowder cup 310 loaded with the gunpowder for multiple times.

Specifically, the powder cup 310 is moved below the charging device 200 through the transmission device 300, the charging device 200 adds powder into the powder cup 310 according to a certain weight, the weighing machine in the initial weighing area 110 confirms the weight of the powder in the powder cup, when the specified weight is reached, the powder addition is stopped, the powder cup 310 is transferred into the re-weighing area 120 through the transmission device 300, and the mass of the powder is further weighed to reduce the weighing error.

The re-weighing area 120 can measure the powder after the initial weighing for two or more times to reduce the error of powder weighing, and simultaneously compare the weighing results of the initial weighing area 110, when the difference of the results is large, it can be determined that one weighing machine in the initial weighing area 110 or the re-weighing area 120 has a fault and needs to be detected and maintained, so as to monitor whether the weighing machine in the initial weighing area 110 or the re-weighing area 120 is in normal operation, ensure the accuracy of the result after powder weighing, and improve the production quality.

Referring to fig. 1 and 3, in some embodiments of the present invention, a static elimination apparatus 400 is further included to eliminate the static of the powder in the powder cup 310 for preliminary and/or repeated weighing.

Specifically, after the static electricity elimination of the powder in the powder cup 310 by the static electricity elimination apparatus 400, the weighing result can be more accurate, and since the static electricity elimination apparatus 400 can eliminate the static electricity of the powder in the powder cup 310 before the initial weighing or eliminate the static electricity of the powder in the powder cup 310 after the initial weighing, the following two cases are divided:

1. when the powder is subjected to static elimination by the static elimination device 400 in the primary weighing, the weighing results of the primary weighing area 110 and the secondary weighing area 120 are not interfered by static, the measurement is more accurate, the secondary weighing can perform a detection function on the primary weighing, faults of the primary weighing can be found in time, and the production quality is improved.

2. When the static electricity of the gunpowder in the gunpowder cup 310 is removed by the static electricity removing device 400 in the repeated weighing process, the static electricity removed gunpowder is measured through the repeated weighing process to obtain the weight of the gunpowder after the static electricity is accurately removed, and whether the actual weight of the gunpowder reaches the standard or not can be accurately judged, so that the quality of the product is improved.

The static electricity eliminating device 400 can discharge static electricity in the gunpowder by grounding, or neutralize the static electricity in the gunpowder by using a metal-dissimilar material, which is a material that generates two completely opposite charges by friction with the gunpowder, so as to eliminate the static electricity. The weighing machines are disposed in the primary weighing area 110 and the secondary weighing area 120, and the powder in the powder cup 310 is weighed by the weighing machines to obtain the weight of the powder, the weighing machines can be weighing machines of the same type, and the weighing machines belong to conventional technical means in the field and are not described herein again.

In addition, the materials with different metal properties can be selected according to the electrostatic sequence of the materials, which is a sequence formed by arranging various materials in sequence according to the polarity of static electricity generated when two materials are in contact with each other. According to this sequence, when the two substances are contacted, the former is positively charged and the latter is negatively charged. This can be explained by the difference in work function of various substances or the difference in polar groups of substances. In practical use, the selection of the metal-dissimilar materials can be made according to the electrostatic sequence of the material.

Referring to fig. 1 and 3, in some embodiments of the utility model, the static elimination apparatus 400 includes at least one of a stirring apparatus or a feeding pipe:

the stirring device is arranged between the primary weighing area 110 and the secondary weighing area 120, the stirring device comprises a stirring part 411 and a lifting device 412, the stirring part 411 is in transmission connection with the lifting device 412 and extends into or separates from the gunpowder cup 310 under the driving of the lifting device 412, and the stirring part 411 is used for stirring gunpowder in the gunpowder cup 310 so as to generate charges opposite to the charges carried by the gunpowder.

The discharging device 200 is connected with the outlet of the discharging pipe, and powder rubs with the discharging pipe when passing through the discharging pipe to generate charges opposite to the charges carried by the powder so as to eliminate the static electricity of the powder.

Taking the stirring device as an example, during the process of discharging the powder, the powder rubs against the discharging device 200 to generate static electricity, which may be positively charged static electricity or negatively charged static electricity, the stirring part 411 may be made of a material that rubs against the powder to generate a charge opposite to the charge of the powder, or a coating layer is provided on the surface of the stirring part 411, and the coating layer can rub against the powder to generate a charge opposite to the charge of the powder.

After the electrostatic gunpowder is weighed initially, the powder without electrostatic charge is weighed again to accurately measure the weight of the gunpowder, so that the weighing result of the gunpowder is more accurate, when the weighing result of the powder weighing meets the standard, the powder weighed this time is a qualified product, and when the weighing result of the powder weighing meets the standard, the powder weighed this time is an unqualified product, and the unqualified product is poured into the blanking device 200 again to carry out blanking again.

For example, the charging tube is used, during the charging process of the gunpowder, the gunpowder rubs against the charging device 200 to generate static electricity, which may be positive static electricity or negative static electricity, and when the gunpowder passes through the charging tube, the gunpowder rubs against the charging tube to generate charge opposite to the charge of the gunpowder, so as to realize neutralization of the static electricity. The blanking pipe can be made of a material which generates charges opposite to the charges carried by the gunpowder by the friction with the gunpowder, or the contact surface of the blanking pipe and the gunpowder is provided with an A coating which can generate the charges opposite to the charges carried by the gunpowder by the friction with the gunpowder.

For example, when the stirring device and the blanking pipe are arranged together, when the blanking pipe is not enough to completely eliminate static electricity generated by friction between gunpowder and the blanking device 200, the static electricity in the gunpowder can be completely eliminated by supplementing the elimination through the stirring device.

The static charge opposite to the static charge of the gunpowder is generated to neutralize the static charge generated in the gunpowder weighing process, so that the uncharged gunpowder is obtained, the possibility of explosion of the gunpowder is reduced, the gunpowder is safer in the subsequent manufacturing and storing process, and the measuring result is more accurate, so that the product quality is improved.

In some embodiments of the present invention, the damping device further includes a first damping device and a second damping device, the first damping device is disposed between the first weighing area 110 and the second weighing area 120 and the supporting device 100, the supporting device 100 is disposed with two opposite mounting surfaces and damping surfaces, the first weighing area 110 is mounted on the mounting surface, and the second damping device is mounted on the damping surface.

Specifically, the first damping device is arranged to isolate the primary weighing area 110 and the secondary weighing area 120 from the supporting device 100, so as to reduce the influence of vibration on weighing during the operation of a blanking device or other devices, and further improve the weighing accuracy.

And the second damping device is arranged on the damping surface so as to reduce the influence of the vibration of the gunpowder weighing device with the double weighing function on weighing and further improve the weighing accuracy.

In some embodiments of the utility model, the first and second shock absorbing devices are both rubber pads. The rubber pad has low cost and good damping performance.

In some embodiments of the present invention, the transferring device 300 comprises a rotating table and a rotation driving device, the rotating table is provided with a plurality of first mounting locations uniformly distributed thereon for placing the propellant cups 310, and the rotating table is in transmission connection with the rotation driving device to drive the first mounting locations to rotate from the initial weighing area 110 to the re-weighing area 120.

Specifically, the gunpowder cup 310 on the first installation position is rotated to the double-weighing area 120 from the initial weighing area 110 through the rotation of the rotating table, the transfer of the gunpowder cup 310 is completed, and the transfer is realized through the rotation, so that the space is saved, and the space utilization rate is higher compared with the transfer in a conveyor belt mode.

In some embodiments of the present invention, the conveying device 300 includes a conveyor belt, a driving wheel, a driven wheel and a conveying driving device, the conveyor belt is provided with a plurality of second mounting locations for placing the propellant cups 310, the driving wheel and the driven wheel are respectively disposed at two ends of the conveyor belt and are in transmission connection with the conveyor belt, and the driving wheel is in transmission connection with the conveying driving device to drive the second mounting locations to move from the primary weighing area 110 to the secondary weighing area 120.

Specifically, the gunpowder cup 310 is transferred through the transmission belt, and the structure is simple.

In some embodiments of the present invention, the transfer device 300 is a robot that can hold the charge cup 310 to move the charge cup 310 from the initial weighing region 110 to the repeated weighing region 120.

Particularly, the gunpowder cup 310 is directly clamped by the manipulator for transferring, so that the gunpowder cup 310 is more conveniently transferred to the next station after weighing is completed, and the efficiency is improved.

In some embodiments of the present invention, a plurality of complex weighing stations are disposed within the complex weighing region 120.

Specifically, the powder cup 310 is weighed through a plurality of re-weighing stations, so that the re-weighing result is more accurate.

Referring to fig. 1, 2 and 4, in some embodiments of the utility model, the blanking device 200 includes a rough blanking structure for roughly adding gunpowder to the gunpowder cup 310 and a fine blanking structure for precisely adding gunpowder to the gunpowder cup 310.

Specifically, the rough blanking structure can add gunpowder into the gunpowder cup 310 quickly, but the adding precision is not enough, unqualified products are prone to occurring, the fine blanking structure is slow in gunpowder adding speed, but the adding precision is high, the gunpowder in the gunpowder cup 310 is added to the weight close to the target value through the rough blanking structure, then the gunpowder in the gunpowder cup 310 is added to the target value through the fine blanking structure, and the gunpowder can be added quickly and accurately.

Referring to fig. 1, 2 and 4, in some embodiments of the present invention, the rough blanking structure includes a rough blanking pipe 250 and a rough blanking chamber 260, the rough blanking chamber 260 is communicated with the explosive cup 310 through the rough blanking pipe 250, a first perforated pumping plate 251, a rough adjustment rod 252 and a second perforated pumping plate 253 are sequentially disposed on the rough blanking pipe 250, and are all slidably disposed along a radial direction of the rough blanking pipe 250, the first perforated pumping plate 251 and the second perforated pumping plate 253 are used for opening or closing the rough blanking pipe 250, and the rough adjustment rod 252 is used for adjusting the flow rate of the explosive in the rough blanking pipe 250.

The specific working process is as follows: the first perforated pulling plate 251 and the second perforated pulling plate 253 are arranged in the rough adding pipeline 250, powder can enter the powder cup 310 through the rough adding pipeline 250 only by passing through the holes on the first perforated pulling plate 251 and the second perforated pulling plate 253, so that the powder can be added into the powder cup 310 quickly at a certain flow rate, when the target value of the rough blanking structure is to be approached, the flow rate of the powder in the pipeline is reduced by extending a rough adding adjusting rod 252 positioned between the first perforated pulling plate 251 and the second perforated pulling plate 253, and when the target value of the rough blanking structure is reached, the rough blanking structure is closed. In the process of reducing the flow of gunpowder in the pipeline, errors are easy to occur, and the adding result is not accurate enough.

Referring to fig. 1 and 2, in some embodiments of the present invention, the fine blanking structure includes a rotary pipe 210, a rotary driving device 220 and a blanking chamber 240, the rotary pipe 210 includes a feeding end and a discharging end, the feeding end is connected with the blanking chamber 240, the discharging end is used for adding gunpowder into a gunpowder cup 310, and the rotary driving device 220 is in transmission connection with the rotary pipe 210 to drive the rotary pipe 210 to rotate.

Specifically, after the rough blanking structure finishes blanking, the fine blanking structure adds gunpowder into the gunpowder cup 310, the gunpowder in the blanking bin 240 enters the rotary pipe 210, the rotary pipe 210 rotates around the axial direction of the rotary pipe to move the gunpowder from the feeding end to the discharging end, and slowly adds the gunpowder into the gunpowder cup 310 of the primary weighing area 110, so that a small amount of gunpowder can be added quantitatively, accurate addition of the gunpowder can be realized, and the fine blanking is finished until a target value is reached.

Referring to fig. 1 and 2, in some embodiments of the present invention, a pivoting device 230 is further included, the pivoting device 230 is drivingly connected to the rotating pipe 210, and the pivoting end of the pivoting device 230 corresponds to the feeding end and the pivoting end corresponds to the discharging end, so as to raise or lower the feeding end of the rotating pipe 210 relative to the discharging end of the rotating pipe 210.

Specifically, through the swing end of lifting around shaft pendulous device 230 for rotating pipe 210 is in the tilt state, makes the powder in rotating pipe 210 can be very fast remove to the discharge end from the feed end, has improved the interpolation efficiency of powder in the smart unloading in-process, and can realize stopping fast and reinforced through reducing around the swing end of shaft pendulous device 230, and control is more convenient.

Referring to fig. 1 and 2, in some embodiments of the present invention, the pivoting device 230 includes a fixed plate, a movable plate, and a pivoting driving device, wherein one side of the movable plate is hinged to the fixed plate, the other side of the movable plate is in transmission connection with the pivoting driving device, and is driven by the pivoting driving device to rotate around the hinged side thereof, and the rotating pipe 210 is disposed on the movable plate.

Specifically, the movable plate is driven to rotate around the fixed plate by the driving of the swing driving device, so that the rotating pipe 210 on the movable plate is inclined, and then gunpowder in the rotating pipe 210 slowly enters the gunpowder cup 310 under the action of gravity, and fine blanking of the gunpowder can be better realized. Further, referring to fig. 2, the swing driving means may be a screw driving structure.

In some embodiments of the present invention, the inner wall of the rotating pipe 210 is provided with an anti-adhesion coating.

Specifically, through setting up antiseized adhesion coating for the runner 210 is more convenient when transporting gunpowder, and the difficult adhesion of gunpowder is on the lateral wall of runner 210, can better carry out the essence unloading of gunpowder.

In addition, the anti-adhesion coating and the coating A can be arranged on the inner wall of the rotating pipe 210 at intervals, so that the rotating pipe 210 has anti-adhesion and static electricity removal functions and is more convenient to use.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. A gunpowder weighing device with a compound weighing function is characterized by comprising:

the supporting device (100) is provided with a primary weighing area (110) and a secondary weighing area (120);

the blanking device (200) is used for adding gunpowder;

the conveying device (300) is provided with a gunpowder cup (310), the gunpowder cup (310) is used for receiving gunpowder discharged by the discharging device (200) in the primary weighing area (110), and the conveying device (300) drives the gunpowder cup (310) to be transferred to the secondary weighing area (120) from the primary weighing area (110) so as to weigh the gunpowder cup (310) loaded with the gunpowder for multiple times.

2. The powder weighing apparatus with compound weighing function as claimed in claim 1, wherein: the static electricity eliminating device (400) is further included for eliminating static electricity of gunpowder in the primary and/or secondary gunpowder cup (310).

3. The powder weighing apparatus with compound weighing function as claimed in claim 2, wherein: the static elimination device (400) at least comprises one of a stirring device or a blanking pipe:

the stirring device is arranged between the primary weighing area (110) and the secondary weighing area (120), the stirring device comprises a stirring part (411) and a lifting device (412), the stirring part (411) is in transmission connection with the lifting device (412), the stirring part extends into or separates from the gunpowder cup (310) under the driving of the lifting device (412), and the stirring part (411) is used for stirring gunpowder in the gunpowder cup (310) to generate charges opposite to the charges of the carried gunpowder;

the discharging device (200) is connected with the outlet of the discharging pipe, and gunpowder rubs with the discharging pipe when passing through the discharging pipe to generate charges opposite to the charges carried by the gunpowder so as to eliminate the static electricity of the gunpowder.

4. The powder weighing apparatus with compound weighing function as claimed in claim 1, wherein: the supporting device (100) is provided with a mounting surface and a supporting surface which are oppositely arranged, the primary weighing area (110) is mounted on the mounting surface, first damping devices are arranged between the primary weighing area (110) and the supporting device (100) and between the secondary weighing area (120) and the supporting device (100), and second damping devices are arranged on the supporting surface.

5. The powder weighing apparatus with compound weighing function as claimed in claim 4, wherein: the first damping device and the second damping device are both rubber pads.

6. The powder weighing apparatus with compound weighing function as claimed in claim 1, wherein: the conveying device (300) comprises a rotating table and a rotary driving device, a plurality of first installation positions which are uniformly distributed are arranged on the rotating table to place the gunpowder cups (310), and the rotating table is in transmission connection with the rotary driving device to drive the first installation positions to rotate from the primary weighing area (110) to the secondary weighing area (120).

7. The powder weighing apparatus with compound weighing function as claimed in claim 1, wherein: the conveying device (300) comprises a conveying belt, a driving wheel, a driven wheel and a conveying driving device, wherein a plurality of second installation positions are arranged on the conveying belt to place the gunpowder cups (310), the driving wheel and the driven wheel are respectively arranged at two ends of the conveying belt and are in transmission connection with the conveying belt, and the driving wheel is in transmission connection with the conveying driving device to drive the second installation positions to move from the primary weighing area (110) to the secondary weighing area (120).

8. The powder weighing apparatus with compound weighing function as claimed in claim 1, wherein: the conveying device (300) is a mechanical arm which can clamp the gunpowder cup (310) so as to move the gunpowder cup (310) from the primary weighing area (110) to the secondary weighing area (120).

9. Powder weighing apparatus having a compound weighing function according to any one of claims 1 to 8, characterized in that: a plurality of complex weighing stations are arranged in the complex weighing area (120).

10. Powder weighing apparatus having a compound weighing function according to any one of claims 1 to 8, characterized in that: the blanking device (200) comprises a rough blanking structure and a fine blanking structure, the rough blanking structure is used for roughly adding gunpowder into the gunpowder cup (310), and the fine blanking structure is used for accurately adding gunpowder into the gunpowder cup (310).

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