CN209027655U - Powder screw rod metering head - Google Patents

Abstract

The utility model discloses a powder screw metering head, which is characterized in that it comprises a stirring chamber, a metering device, a stirring device and a material storage device. The stirring device passes above the stirring chamber and is fixedly connected with the stirring chamber, so that one end of the stirring device is It is located inside the stirring chamber, and one end is located outside the stirring chamber; the metering device passes through the stirring device and is installed above the stirring device, so that one end of the metering device is located inside the stirring chamber, and the other end is located outside the stirring chamber; The material storage device is installed on the back, the stirring chamber is communicated with the material storage device, and a discharge pipe suitable for the stirring device and the metering device is arranged below the stirring chamber. The powder screw metering head of the utility model has uniform discharge and high metering precision.

Description

A powder screw metering head

technical field

The utility model relates to the technical field of powder metering equipment, in particular to a powder screw metering head.

Background technique

Powdered material products are common in various industries, such as food and chemical industries. Powder measurement accuracy is required to be high, usually accurate to grams. For a small amount of material, it can be measured by manual weighing, but for continuous production or a large amount of material, manual measurement is inefficient, so a metering machine is usually used. The existing metering machines have poor measurement accuracy and unstable control. There are often problems such as material blockage, discontinuous material discharge, and different discharge volumes from the two discharge ports. These problems mainly occur in the metering head of the metering machine. Therefore, how to design a metering head to overcome the above-mentioned common shortcomings and deficiencies is an urgent technical problem to be solved by inventors and designers.

Utility model content

In order to overcome the above-mentioned technical problems, the utility model provides a powder screw metering head with uniform discharge and high metering accuracy.

The technical scheme adopted by the utility model to solve its technical problems is:

A powder screw metering head includes a stirring chamber, a metering device, a stirring device and a material storage device. The stirring device passes above the stirring chamber and is fixedly connected with the stirring chamber, so that one end of the stirring device is located inside the stirring chamber, and one end is located in the stirring chamber. The metering device passes through the stirring device and is installed above the stirring device, so that one end of the metering device is located inside the stirring chamber, and the other end is located outside the stirring chamber; the storage device is installed on the back of the stirring chamber, The stirring chamber is communicated with the material storage device, and a discharge pipe suitable for the stirring device and the metering device is arranged below the stirring chamber.

Preferably, the metering device comprises: a first motor, a screw rod connected to the long shaft core of the first motor, the screw rod extending into the discharge pipe to the end. The first motor adopts a servo motor, which makes the rotation precision higher and is easy to control.

Preferably, the helical blades of the helical rod are in the shape of a large end portion and a small tail portion.

Preferably, the outlet of the discharge pipe is provided with a star-shaped grid-shaped discharge nozzle.

Preferably, the material is measured by the rotation of the screw in the discharge pipe, and the shape of the screw blade changes from large to small, so that the flowing material can smoothly enter the gap of the screw to ensure the uniformity of the discharge. When the screw stops rotating The star-shaped grid-shaped discharge nozzle can prevent the material in the discharge pipe from falling down and improve the measurement accuracy.

Preferably, the stirring device includes: a hollow rotor, a stator adapted to the rotor, the rotor is sheathed on the long shaft core of the first motor, and the stator is fixedly installed above the stirring chamber; the One end of the rotor located inside the stirring chamber is installed with a stirring rod, the stirring rod extends into the discharge pipe, the end of the rotor located outside the stirring chamber is provided with a gear, and the rotor close to the outside of the stirring chamber is connected with the reducer chain, The speed reducer is driven by a second motor, and the rotors are connected by a timing belt.

Preferably, the material entering the discharge pipe is stirred by the stirring device to improve the fluidity of the material, so that the material can be fully filled into the gap of the screw rod, thereby improving the accuracy of material measurement.

Preferably, the material storage device includes: a material barrel, a vacuum feeder installed above the material barrel, a propeller installed horizontally at the bottom of the material barrel, and an opening communicating with the stirring chamber is provided on the side of the inner bottom of the material barrel, The propeller is driven by a third motor.

Preferably, the material in the barrel is fed by a vacuum feeder, and the material in the barrel is stirred by a propeller, so that the material enters the stirring chamber uniformly.

Compared with the prior art, the beneficial effect of the utility model is: through the coordinated installation of the metering device and the stirring device, and the uniform feeding of the material storage device, the material can be fully stirred in the whole process, and the fluidity and efficiency are improved. The uniformity of the flow can avoid the problems of material stagnation and blockage, discontinuous material discharge and different discharge volume of each discharge port, thereby improving the accuracy of material measurement.

Description of drawings

Fig. 1 is the front structure schematic diagram of the powder screw metering head of the utility model;

2 is a schematic diagram of the installation structure of the metering device and the stirring device of the powder screw metering head of the present utility model;

3 is a schematic diagram of the installation structure of the storage device of the powder screw metering head of the present invention;

4 is a schematic diagram of the matching installation structure of the metering device and the stirring device of the powder screw metering head of the present invention;

5 is a schematic structural diagram of the discharge nozzle of the powder screw metering head of the present invention.

Description of reference numerals: stirring chamber 1; metering device 2; first motor 201; screw rod 202; screw blade 203; stirring device 3; rotor 301; stator 302; stirring rod 303; gear 304; reducer 305; second motor 306; Timing belt 307; Material storage device 4; Material barrel 401; Vacuum feeder 402; Propeller 403;

Detailed ways

The present utility model will be further described and explained in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1-5, a powder screw metering head includes a stirring chamber 1, a metering device 2, a stirring device 3 and a material storage device 4. The stirring device 3 passes over the stirring chamber 1 and is fixed to the stirring chamber 1. Connect so that one end of the stirring device 3 is located inside the stirring chamber 1, and one end is located outside the stirring chamber 1; Inside, the other end is located outside the stirring chamber 1; the storage device 4 is installed on the back of the stirring chamber 1, and the stirring chamber 1 is communicated with the storage device 4. The mixing device 3 and the metering device 2 are adapted to the discharge pipe 5.

Specifically, the metering device 2 includes: a first motor 201 , and a screw rod 202 connected to the long axis of the first motor 201 , and the screw rod 202 extends into the discharge pipe 5 to the end. The first motor 201 adopts a servo motor, so that the rotation precision is higher and the control is convenient.

Specifically, the helical blade 203 of the helical rod 202 is in the shape of a large end portion and a small tail portion.

Specifically, the outlet of the discharge pipe 5 is provided with a star-shaped grid-shaped discharge nozzle 6 .

In this example, the material is measured by the rotation of the screw rod 202 in the discharge pipe 5, and the shape of the screw blade 203 changes from large to small, so that the flowing material can smoothly enter the gap of the screw rod 202, and the uniformity of the discharge is ensured. When the screw rod 202 stops rotating, the star-shaped grid-shaped discharge nozzle 6 can prevent the material in the discharge pipe 5 from falling, thereby improving the measurement accuracy.

Specifically, the stirring device 3 includes: a hollow rotor 301, a stator 302 adapted to the rotor 301, the rotor 301 is sheathed on the long axis of the first motor 201, and the stator 302 is fixedly installed on the Above the stirring chamber 1; one end of the rotor 301 located inside the stirring chamber 1 is provided with a stirring rod 303, the stirring rod 302 extends into the discharge pipe 5, and one end of the rotor 301 located outside the stirring chamber 1 is provided with a stirring rod 303. There is a gear 304, and the rotor 301 near the outside of the stirring chamber 1 is connected with a reducer 305 in a chain. The reducer 305 is driven by a second motor 306, and the rotors 301 are connected by a timing belt 307.

In this example, the material entering the discharge pipe 5 is stirred by the stirring device 3 to improve the fluidity of the material, so that the material can be fully filled into the gap of the screw rod 202, thereby improving the accuracy of material measurement.

Specifically, the material storage device 4 includes: a material barrel 401, a vacuum feeder 402 installed above the material barrel 401, a propeller 403 horizontally installed at the inner bottom of the material barrel 401, and a side surface of the inner bottom of the material barrel 401 is provided with The opening communicated with the stirring chamber 1 , the propeller is driven by the third motor 404 .

In this example, the material barrel 401 is fed by the vacuum feeder 402, and the material in the material barrel 401 is stirred by the propeller 403, so that the material enters the stirring chamber 1 uniformly.

The beneficial effects of this embodiment are: through the coordinated installation of the metering device and the stirring device, and the uniform feeding of the material storage device, the material can be fully stirred in the whole process, the fluidity and the uniformity of the flow are improved, and the occurrence of The problems of material stagnation and blockage, discontinuous material discharge and different discharge volume of each discharge port, etc., improve the accuracy of material measurement.

Taking the above ideal embodiments according to the present invention as inspiration, through the above description, the relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the description, and its technical scope must be determined according to the scope of the claims.

Claims (6)

1. a kind of powder screw rod metering head, which is characterized in that including teeter chamber, metering device, agitating device and storage device, institute It states agitating device to be fixedly connected above teeter chamber and with teeter chamber, is located at one end of agitating device inside teeter chamber, one End is located at outside teeter chamber；The metering device passes through agitating device and is mounted on the top of agitating device, makes metering device One end is located inside teeter chamber, and the other end is located at the outside of teeter chamber；The back side of the teeter chamber is installed by the storage device, institute It states teeter chamber to be connected to storage device, the lower section of the teeter chamber is equipped with to be gone out with what the agitating device and metering device were adapted Expects pipe.

2. a kind of powder screw rod metering head according to claim 1, which is characterized in that the metering device includes: first Motor, the screw rod connecting with the long-shaft-core of first motor, the screw rod protrude into the discharge nozzle to end.

3. a kind of powder screw rod metering head according to claim 2, which is characterized in that the helical-blade of the screw rod is in end The shape that portion is big, tail portion is small.

4. a kind of powder screw rod metering head according to claim 2, which is characterized in that the outlet of the discharge nozzle is equipped with star The latticed discharging gate of type.

5. a kind of powder screw rod metering head according to claim 2, which is characterized in that the agitating device includes: hollow Rotor, the stator being adapted to rotor, on the long-shaft-core of the first motor, the stator is fixedly mounted the rotor housing Above the teeter chamber；One end that the rotor is located inside teeter chamber is equipped with stirring rod, and the stirring rod protrudes into described In discharge nozzle, the rotor is located at rotor and retarder chain of the one end outside teeter chamber equipped with gear, on the outside of teeter chamber Item connection, the retarder pass through the second motor driven, pass through synchronous band connection between the rotor.

6. a kind of powder screw rod metering head according to claim 1, which is characterized in that the storage device includes: charging basket, The vacuum feeder being mounted on above charging basket is horizontally arranged at the propeller of bottom in charging basket, and bottom sides are set in the charging basket There is the opening being connected to teeter chamber, the propeller passes through third motor driven.