CN212667716U

CN212667716U - Environment-friendly powder quantitative weighing equipment

Info

Publication number: CN212667716U
Application number: CN202021205238.5U
Authority: CN
Inventors: 吕亮; 吕荣兴; 武杰; 崔现新; 吕明
Original assignee: Shandong Ronghua Refractories Co ltd
Current assignee: Shandong Ronghua Refractories Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-09
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to an environment-friendly powder quantitative weighing equipment, the technical field who relates to powder weighing equipment, which comprises a bracket, fixedly connected with feed bin and lower hopper on the support, be connected through spiral conveyer between feed bin and the lower hopper, still be provided with weighing device on the support, weighing device includes weighing cylinder, unloading valve and a plurality of weighing sensor, weighing cylinder and the coaxial setting of lower hopper and intercommunication, weighing cylinder slides along the axle center of self and lower hopper and is connected, unloading valve fixed connection is in one side of hopper under keeping away from weighing cylinder, weighing sensor sets up along the circumference equipartition of weighing cylinder, and weighing sensor's one end and lower hopper fixed connection, weighing sensor's the other end and weighing cylinder fixed connection, weighing sensor is connected with step motor electricity, weighing sensor still is connected with the unloading valve electricity. The utility model discloses make the likepowder powder be difficult for spilling over from between weighing cylinder and the lower hopper, alleviateed the quantity that produces the smoke and dust in the factory building, alleviateed the waste of powder, protected the environment simultaneously.

Description

Environment-friendly powder quantitative weighing equipment

Technical Field

The application relates to the technical field of powder weighing equipment, in particular to environment-friendly powder quantitative weighing equipment.

Background

The stemming is a refractory material for blocking an iron tap hole and can be divided into water stemming and anhydrous stemming, wherein the water stemming is used for a medium and small blast furnace with lower top pressure and low enhanced smelting degree, and the anhydrous stemming is used for a medium and large blast furnace with higher top pressure and high enhanced smelting degree. The stemming can be divided into refractory aggregate and bonding agent, the refractory aggregate refers to corundum, mullite, flint clay and other refractory raw materials and coke, mica and other modified materials, and the finished product of the refractory aggregate is a powdery material, so that a powder quantitative weighing device is mostly needed to weigh the refractory aggregate during packaging.

At present, a Chinese application patent with publication number of CN209177056U, published as 2019, 07, 30.9, provides a continuous packaging and weighing device for granular welding flux, which comprises a mounting seat, a fixed column, a fixed block, a drying mechanism and a weighing mechanism; the surface of the top of the left side of the mounting seat is fixedly connected with a fixing column, and a packaging box is placed on the surface of the top of the right side of the mounting seat; a placing groove is formed in the top end of the fixed column, and a motor is fixedly connected in the placing groove; one side of the top end of the fixed column is fixedly connected with the fixed ring through a connecting block; the drying mechanism comprises a motor, a belt, a heating pipe, a drying shell, a fixing ring and a discharging pipe, and the belt is sleeved on the surface of the output end of the motor; the fixed ring is sleeved in a rotating groove formed in the side surface of the drying shell, and the top side of the drying shell is fixedly connected with a heating pipe; the top end of the heating pipe is rotationally connected with the output end of the motor through a belt; a discharge pipe is fixedly communicated with the bottom of the drying shell, and a first electromagnetic valve is arranged in the discharge pipe; the weighing mechanism comprises a placing plate, a placing shell, a discharging pipe, a first electromagnetic valve, a pressure sensor, a processor, a controller, a display screen, a first electromagnetic valve controller and a second electromagnetic valve controller, and the placing plate is fixedly connected to one side of the fixed column through a fixed block; the display screen is arranged on the side surface of the placing plate, and the top of the placing plate is provided with a placing shell; a pressure sensor is arranged between the placing shell and the placing plate; the sponge cushion is attached to the inner wall of the bottom of the placing shell, and the side surface of the bottom of the placing shell is fixedly communicated with the discharging pipe; a second electromagnetic valve is arranged in the discharge pipe; the processor is fixedly connected with the side surface of the fixed column and electrically connected with the pressure sensor, and the processor is electrically connected with the first electromagnetic valve controller and the second electromagnetic valve controller which are fixedly connected with the surface of the fixed column respectively.

When the refractory aggregate is packaged and weighed, a packaging bag or a packaging box is placed below the discharging pipe, then the motor rotates and opens the first electromagnetic valve, so that the welding flux is conveyed into the placing shell, after the weight of the welding flux reaches a preset value, the motor stops rotating, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the welding flux in the placing shell is transferred into the packaging bag or the packaging box.

The above prior art solutions have the following drawbacks: because the discharge pipe is arranged above the placing shell in a suspended manner, the granular powder easily generates smoke dust when entering the placing shell through the discharge pipe, thereby not only causing the waste of the powder, but also destroying the environment in a factory building.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an environment-friendly powder quantitative weighing equipment, can reduce the emission of smoke and dust when weighing likepowder powder, and then practice thrift the powder, the environmental protection simultaneously to the not enough that prior art exists.

The above object of the present invention is achieved by the following technical solutions:

an environment-friendly powder quantitative weighing device comprises a support, wherein a bin and a blanking hopper are fixedly connected to the support, the bin is connected with the blanking hopper through a spiral conveying device, the spiral conveying device comprises a stepping motor, a conveying cylinder and a conveying screw, the stepping motor and the conveying cylinder are fixedly connected to the support, two ends of the conveying cylinder are respectively communicated with the bin and the blanking hopper, the conveying screw penetrates through the conveying cylinder and is coaxially and rotatably connected with the conveying cylinder, the conveying screw is coaxially and fixedly connected with an output shaft of the stepping motor,

the automatic feeding device is characterized in that the support is further provided with a weighing device, the weighing device comprises a weighing cylinder, a blanking valve and a plurality of weighing sensors, the weighing cylinder and the blanking hopper are coaxially arranged and communicated, the weighing cylinder is connected with the blanking hopper in a sliding mode along the axis of the weighing cylinder, the blanking valve is fixedly connected to one side, away from the blanking hopper, of the weighing cylinder, the weighing sensors are uniformly arranged along the circumferential direction of the weighing cylinder, one end of each weighing sensor is fixedly connected with the blanking hopper, the other end of each weighing sensor is fixedly connected with the weighing cylinder, the weighing sensors are electrically connected with the stepping motor, and the weighing sensors are further electrically connected with the blanking valve.

By adopting the technical scheme, the stepping motor drives the powder in the spiral measuring bin to be conveyed into the blanking hopper, then the powder flows into the weighing cylinder under the action of gravity, the powdery powder is not easy to overflow from the space between the weighing cylinder and the blanking hopper due to the communication between the weighing cylinder and the blanking hopper, the quantity of smoke dust generated in a plant is reduced, the waste of the powder is reduced, the environment in the plant is protected, when the powder is filled into the weighing cylinder, relative slippage is gradually generated between the weighing cylinder and the blanking hopper along with the increase of the weight in the weighing cylinder, so that the weighing sensor detects the weight of the powder in the weighing cylinder, the weighing of the powder is realized, after the powder in the weighing cylinder reaches a preset quantity, the stepping motor known as the weighing sensor stops rotating, the powder filling into the weighing cylinder from the hopper is stopped, and the blanking valve is opened by the weighing sensor, and then the powder in the weighing cylinder is discharged into a packaging bag or a packaging box, so that the powder is weighed and packaged once.

The present application may be further configured in a preferred example to: the weighing device further comprises a corrugated pipe, one end of the corrugated pipe is fixedly connected with the outer peripheral surface of the discharging hopper, and the other end of the corrugated pipe is fixedly connected with the outer peripheral surface of the weighing cylinder.

Through adopting above-mentioned technical scheme, including the bellows with the connecting portion parcel between the weighing cylinder and the hopper down, when the powder shifts to the weighing cylinder in from hopper down and when producing the dust, the dust also is difficult for spilling over from the bellows, has further alleviateed the quantity that produces the smoke and dust in the factory building, has both alleviateed the waste of powder, has protected the environment in the factory building simultaneously.

The present application may be further configured in a preferred example to: still be provided with fixture on the weighing cylinder, fixture includes first clamping jaw and second clamping jaw, first clamping jaw with the second clamping jaw is all rotated and is connected on the outer peripheral face of weighing cylinder, just first clamping jaw with the second clamping jaw sets up respectively the both sides in weighing cylinder axle center.

Through adopting above-mentioned technical scheme, when using the wrapping bag packing powder, establish the wrapping bag cover on the outer peripheral face of hopper down earlier, later in to the wrapping bag load, after loading and finishing, first clamping jaw and second clamping jaw all rotate towards the axle center direction of hopper down, and then make first clamping jaw and second clamping jaw press from both sides tightly the one end that is close to self sack at the wrapping bag, so both reduced the wrapping bag and filled the probability that the back takes place to empty, thereby the extravagant probability of powder has been reduced, the environment in the factory building has been protected, the accuracy nature when weighing the packing has been improved simultaneously.

The present application may be further configured in a preferred example to: the clamping mechanism further comprises an air cylinder, one end of the air cylinder is rotatably connected with the first clamping jaw, the other end of the air cylinder is rotatably connected with the second clamping jaw, and the weighing sensor is electrically connected with the air cylinder.

Through adopting above-mentioned technical scheme, when the weight of powder does not reach and sets for weight in the weighing cylinder, the piston rod of cylinder stretches out for first clamping jaw and second clamping jaw do not press from both sides tightly on the outer peripheral face of wrapping bag, after the powder in the weighing cylinder reaches and sets for weight, the unloading valve is opened and then packs the powder in the weighing cylinder into the wrapping bag, after the unloading valve is opened a period, the piston rod of cylinder is withdrawed, first clamping jaw and second clamping jaw clamp again are close to the one end of self sack at the wrapping bag this moment.

The present application may be further configured in a preferred example to: the fixture still includes first stopper and second stopper, the equal fixed connection of first stopper and second stopper is in on the outer peripheral face of weighing cylinder, first stopper with the second stopper is followed the axle center symmetry of weighing cylinder sets up, just first stopper with first clamping jaw is close to one side butt in weighing cylinder axle center, the second stopper with the second clamping jaw is close to one side butt in weighing cylinder axle center.

Through adopting above-mentioned technical scheme, when the piston rod of cylinder withdrawed, first stopper and second stopper restricted the motion orbit of first clamping jaw and second clamping jaw respectively, thereby reduced because of one of them clamping jaw slow in the first clamping jaw or the second clamping jaw action make the probability that another clamping jaw will pack the bag and fall, reduced the extravagant probability of powder, protected the environment in the factory building, improved the accuracy nature when weighing the packing simultaneously.

The present application may be further configured in a preferred example to: the first clamping jaw comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are symmetrically arranged on two sides of the axle center of the weighing cylinder, the second clamping jaw comprises a third connecting rod and a fourth connecting rod, the third connecting rod and the fourth connecting rod are symmetrically arranged on two sides of the axle center of the weighing cylinder, the first connecting rod and a rubber strip fixedly connected between the second connecting rods, and the third connecting rod and a rubber strip fixedly connected between the fourth connecting rods.

Through adopting above-mentioned technical scheme, when using first clamping jaw and the tight periphery of second clamping jaw clamp wrapping bag, by the outer peripheral face butt of rubber strip with the wrapping bag, so reduced the probability that first clamping jaw and second clamping jaw pricked the wrapping bag, both improved the yield when packing, reduced the probability that the powder spills in the wrapping bag simultaneously, reduced the extravagant probability of powder, protected the environment in the factory building.

The present application may be further configured in a preferred example to: an elastic rope is fixedly connected between the first connecting rod and the second connecting rod, an elastic rope is fixedly connected between the third connecting rod and the fourth connecting rod, and the elastic rope is sleeved on the outer peripheral surface of the weighing cylinder.

Through adopting above-mentioned technical scheme, when using the wrapping bag packing powder, establish the wrapping bag cover on the outer peripheral face of hopper down earlier, later establish the elasticity fag end at the wrapping bag near self sack, and then make the sack cover of wrapping bag tightly on the weighing cylinder, the probability that the wrapping bag emptys when having reduced the powder of annotating in the wrapping bag, the compactness of laminating between the outer peripheral face of wrapping bag and weighing cylinder has been improved, the extravagant probability of powder has been reduced, the environment in the factory building has been protected, the accuracy nature when having improved and weighing the packing.

The present application may be further configured in a preferred example to: the fixture still includes third stopper and fourth stopper, the equal fixed connection of third stopper and fourth stopper is in on the outer peripheral face of weighing cylinder, the third stopper with the fourth stopper is followed the axle center symmetry of weighing cylinder sets up, just the third stopper with first clamping jaw is kept away from one side butt in weighing cylinder axle center, the fourth stopper with the second clamping jaw is kept away from one side butt in weighing cylinder axle center.

Through adopting above-mentioned technical scheme, when first clamping jaw and second clamping jaw rotate towards the one side of keeping away from the weighing cylinder axle center, one side and the third stopper butt in weighing cylinder axle center are kept away from to first clamping jaw, one side and the fourth stopper butt in weighing cylinder axle center are kept away from to the second clamping jaw, the incomplete phenomenon is opened with the second clamping jaw to so avoided first clamping jaw, the probability that will wrap the bag and fall when having reduced the piston rod that stretches out the cylinder, the extravagant probability of powder has been reduced, the environment in the factory building has been protected, the accuracy nature when weighing the packing has been improved.

The present application may be further configured in a preferred example to: the weighing cylinder is far away from fixedly connected with joint piece on the outer peripheral face of the one end of hopper down, the joint piece with the elasticity rope joint.

Through adopting above-mentioned technical scheme, establish the elasticity rope fastening on the joint piece when the outer peripheral face of weighing cylinder with the elasticity noose, so the elasticity rope just is difficult for droing from the outer peripheral face of weighing cylinder because of the impact force when the powder gets into the wrapping bag, has improved the compactness of laminating between the outer peripheral face of wrapping bag and weighing cylinder, has reduced the probability that wrapping bag sack department produced the raise dust, has protected the environment in the factory building, has reduced the unrestrained rate of powder simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through with weighing cylinder and hopper coaxial arrangement and intercommunication down, and the weighing cylinder slides along the axle center of self and hopper down and is connected for the likepowder powder is difficult to spill over between weighing cylinder and the hopper down, has alleviateed the quantity that produces the smoke and dust in the factory building, has alleviateed the waste of powder, has protected the environment simultaneously.

2. Through fixture's setting, after finishing loading, first clamping jaw and the equal axle center direction rotation of hopper down of second clamping jaw, and then make first clamping jaw and second clamping jaw press from both sides tightly the one end that is close to self sack at the wrapping bag, so both reduced the wrapping bag and filled the probability that the back takes place to empty to reduce the extravagant probability of powder, protected the environment in the factory building, improved the accuracy nature when weighing the packing simultaneously.

3. Through the setting of rubber strip, when using first clamping jaw and the tight periphery of wrapping bag of second clamping jaw clamp, by the outer peripheral face butt of rubber strip with the wrapping bag, so reduced the probability that wrapping bag was pricked to first clamping jaw and second clamping jaw, both improved the yield when packing, reduced the probability that the powder spills in the wrapping bag simultaneously, reduced the extravagant probability of powder, protected the environment in the factory building.

4. Through the setting of elasticity rope, establish the one end that the wrapping bag is close to self sack with the elasticity fag end, and then make the sack cover of wrapping bag tightly on the weighing cylinder, the probability that the wrapping bag emptys when having reduced the filling powder in to the wrapping bag, improved the compactness of laminating between the outer peripheral face of wrapping bag and weighing cylinder, reduced the extravagant probability of powder, protected the environment in the factory building, improved the accuracy nature when weighing the packing.

Drawings

FIG. 1 is a schematic partial sectional view showing the overall structure of the present embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic sectional view of the peripheral structure of the weighing cylinder.

Reference numerals: 1. a support; 11. a storage bin; 111. a support leg; 12. feeding a hopper; 121. a sliding barrel; 2. a screw conveyor; 21. a stepping motor; 22. a delivery cartridge; 23. a conveying screw; 3. a weighing device; 31. a weighing cylinder; 311. a clamping block; 32. a discharge valve; 33. a weighing sensor; 34. a bellows; 4. a clamping mechanism; 41. a first jaw; 411. a first connecting rod; 412. a second connecting rod; 42. a second jaw; 421. a third connecting rod; 422. a fourth connecting rod; 43. a cylinder; 44. a first stopper; 45. a second limiting block; 46. a third limiting block; 47. a fourth limiting block; 48. a rubber strip; 49. an elastic cord; 5. a conveying device; 51. a belt frame; 52. a drive motor; 53. a belt roller; 54. a conveyor belt.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1 and 2, the embodiment provides an environment-friendly powder quantitative weighing apparatus, which includes a support 1, a bin 11 for storing powder is disposed above the support 1, the bin 11 is communicated with a discharging hopper 12, and a weighing device 3 for weighing powder is disposed below the discharging hopper 12.

A plurality of support legs 111 are welded on the outer peripheral surface of the bin 11, and one ends, far away from the bin 11, of the support legs 111 are fixedly connected to the ground through anchor bolts, or the support legs 111 are fixedly connected to the support 1 through welding.

The bunker 11 is communicated with the discharge hopper 12 through a screw conveyer 2, and the screw conveyer 2 comprises a stepping motor 21, a conveying cylinder 22 and a conveying screw 23. The conveying cylinder 22 is horizontally arranged, the conveying cylinder 22 is fixedly connected with or welded on the support 1 through bolts, and one end of the conveying cylinder 22 is communicated with the bottom end of the storage bin 11. The conveying screw 23 coaxially penetrates through the conveying cylinder 22, and the conveying screw 23 is coaxially and rotatably connected with the conveying cylinder 22. The stepping motor 21 is fixedly connected to the support 1 or the conveying cylinder 22 through a bolt, and an output shaft of the stepping motor 21 is coaxially and fixedly connected with the conveying screw 23 through a coupler.

The lower hopper 12 is fixedly connected to the bracket 1 through bolts or directly welded on the conveying cylinder 22, and the lower hopper 12 is arranged at one end of the conveying cylinder 22 far away from the storage bin 11 and communicated with the conveying cylinder 22.

The sliding barrel 121 is welded at one end of the lower hopper 12, which is far away from the conveying barrel 22, the sliding barrel 121 is cylindrical, the weighing device 3 comprises a weighing barrel 31, the weighing barrel 31 is also cylindrical, and the weighing barrel 31 is coaxially sleeved on the outer circumferential surface of the sliding barrel 121 and is connected with the sliding barrel 121 in a sliding manner along the self axis. A corrugated pipe 34 is further arranged at the joint of the weighing cylinder 31 and the sliding cylinder 121, one end of the corrugated pipe 34 is fixedly connected to the outer circumferential surface of the weighing cylinder 31 through a screw, and the other end of the corrugated pipe 34 is fixedly connected to the outer circumferential surface of the lower hopper 12 through a screw.

Referring to fig. 2 and 3, a discharge valve 32 is fixedly connected to an inner circumferential surface of one end of the weighing cylinder 31 remote from the sliding cylinder 121, and when the discharge valve 32 is closed, powder can be temporarily stored in the weighing cylinder 31. The outer circumferential surface of the weighing cylinder 31 is further provided with a plurality of weighing sensors 33, one end of each weighing sensor 33 is fixedly connected with the outer circumferential surface of the weighing cylinder 31 through a bolt, the other end of each weighing sensor 33 is fixedly connected with the outer circumferential surface of the lower hopper 12, and the plurality of weighing sensors 33 are uniformly distributed along the axis of the weighing cylinder 31. The weighing sensor 33 is electrically connected to the blanking valve 32, and the weighing sensor 33 is also electrically connected to the stepping motor 21.

When powder is weighed, the packaging bag is sleeved on the outer peripheral surface of the weighing cylinder 31, the discharging valve 32 is closed, then the stepping motor 21 rotates to fill the powder into the weighing cylinder 31, after the weight of the powder in the weighing cylinder 31 reaches a preset value, the weighing sensor 33 sends out an electric signal and controls the stepping motor 21 to stop, at the moment, the powder cannot be conveyed into the weighing cylinder 31 from the bin 11, the discharging valve 32 is opened at the same time, the powder can be unloaded into the packaging bag from the weighing cylinder 31, and therefore the weighing of a bag of powder can be completed.

The weighing cylinder 31 is further provided with a clamping mechanism 4 for clamping the packaging bag, the clamping mechanism 4 comprises a first clamping jaw 41 and a second clamping jaw 42 which are symmetrically arranged along the axis of the weighing cylinder 31, the first clamping jaw 41 further comprises a first connecting rod 411 and a second connecting rod 412, the first connecting rod 411 and the second connecting rod 412 are symmetrically arranged on two sides of the axis of the weighing cylinder 31, and the first connecting rod 411 and the second connecting rod 412 are rotatably connected with the outer peripheral surface of the weighing cylinder 31. The second clamping jaw 42 further comprises a third connecting rod 421 and a fourth connecting rod 422, the third connecting rod 421 and the fourth connecting rod 422 are also symmetrically arranged at two sides of the axis of the weighing cylinder 31, and the third connecting rod 421 and the fourth connecting rod 422 are also rotationally connected with the outer peripheral surface of the weighing cylinder 31.

The rubber strip 48 is fixedly connected between the first connecting rod 411 and the second connecting rod 412 through screws, the rubber strip 48 is also fixedly connected between the third connecting rod 421 and the fourth connecting rod 422 through screws, and when the first clamping jaw 41 and the second clamping jaw 42 are close to each other, the rubber strip 48 can be sleeved on the outer peripheral surface of the bag mouth of the packaging bag.

An elastic rope 49 is fixedly connected between the first connecting rod 411 and the second connecting rod 412 through a screw, an elastic rope 49 is also fixedly connected between the third connecting rod 421 and the fourth connecting rod 422 through a screw, the elastic rope 49 can be made of nylon or rubber, and a clamping block 311 is welded on the outer peripheral surface of one end, away from the hopper 12, of the weighing cylinder 31. When the first clamping jaw 41 and the second clamping jaw 42 are far away from each other, the elastic rope 49 can be sleeved on the outer peripheral surface of the bag mouth of the packaging bag, the bag mouth of the packaging bag is tightly held on the outer peripheral surface of the weighing cylinder 31, and the elastic rope 49 is clamped on the clamping block 311.

The weighing device 3 further comprises two air cylinders 43 for driving the first clamping jaw 41 and the second clamping jaw 42, and the two air cylinders 43 are symmetrically arranged on two sides of the axle center of the weighing cylinder 31. The cylinder body of one of the cylinders 43 is hinged to the first connecting rod 411, and the piston rod of the cylinder 43 is hinged to the third connecting rod 421; the cylinder body of the other cylinder 43 is hinged to the second connecting rod 412, and the piston rod of the cylinder 43 is hinged to the fourth connecting rod 422. The weighing sensor 33 is also electrically connected with the air cylinder 43, and a piston rod of the air cylinder 43 is retracted after the weighing sensor 33 measures that the powder in the weighing cylinder 31 reaches a preset value, so that the rubber strip 48 is tightly held on the outer peripheral surface of the packaging bag.

The clamping mechanism 4 further comprises two first limiting blocks 44 and two second limiting blocks 45, and the first limiting blocks 44 and the second limiting blocks 45 are welded on the outer peripheral surface of the weighing cylinder 31. The first stopper 44 and the second stopper 45 are symmetrically arranged along the axis of the weighing cylinder 31, the two first stoppers 44 are symmetrically arranged along the axis of the weighing cylinder 31, and the two second stoppers 45 are also symmetrically arranged along the axis of the weighing cylinder 31.

After the first clamping jaw 41 and the second clamping jaw 42 approach each other, one of the first limiting blocks 44 abuts against one side of the first connecting rod 411, which is close to the axis of the weighing cylinder 31, and the other first limiting block 44 abuts against one side of the second connecting rod 412, which is close to the axis of the weighing cylinder 31; one of the second stoppers 45 abuts against one side of the third connecting rod 421 near the axis of the weighing cylinder 31, and the other second stopper 45 abuts against one side of the fourth connecting rod 422 near the axis of the weighing cylinder 31.

The clamping mechanism 4 further comprises two third limiting blocks 46 and two fourth limiting blocks 47, and the third limiting blocks 46 and the fourth limiting blocks 47 are welded on the outer peripheral surface of the weighing cylinder 31. The third stoppers 46 and the fourth stoppers 47 are symmetrically arranged along the axis of the weighing cylinder 31, the two third stoppers 46 are symmetrically arranged along the axis of the weighing cylinder 31, and the two fourth stoppers 47 are symmetrically arranged along the axis of the weighing cylinder 31.

After the first clamping jaw 41 and the second clamping jaw 42 are away from each other, one of the third limiting blocks 46 abuts against one side of the first connecting rod 411 away from the axis of the weighing cylinder 31, and the other third limiting block 46 abuts against one side of the second connecting rod 412 away from the axis of the weighing cylinder 31; one of the fourth stoppers 47 abuts against the side of the third connecting rod 421 away from the axis of the weighing cylinder 31, and the other fourth stopper 47 abuts against the side of the fourth connecting rod 422 away from the axis of the weighing cylinder 31.

Referring to fig. 1 and 2, a conveying device 5 for conveying packaging bags can be further arranged below the weighing cylinder 31, the conveying device 5 comprises a belt frame 51, belt rollers 53 are rotatably connected to two ends of the belt frame 51 in the length direction, and a conveying belt 54 is sleeved on the outer circumferential surface of each belt roller 53. The belt frame 51 is also fixedly connected with a driving motor 52 through bolts, and the driving motor 52 is in transmission connection with a belt roller 53 through a belt pulley.

The implementation principle of the embodiment is as follows:

when weighing the powder, firstly extending the plug rod of the cylinder 43, then sleeving the mouth of the packaging bag on the outer peripheral surface of the weighing cylinder 31, sleeving the elastic rope 49 on the mouth of the packaging bag, tightly sleeving the mouth of the packaging bag on the outer peripheral surface of the weighing cylinder 31, then controlling the stepping motor 21 to rotate, under the action of the conveying screw 23, feeding the powder into the blanking hopper 12 from the bin 11, then dropping the powder into the weighing cylinder 31 from the blanking hopper 12, opening the blanking valve 32 after the weight of the powder in the weighing cylinder 31 reaches a preset value, dropping the powder into the packaging bag from the weighing cylinder 31, standing for a period of time, so that the powder floating in the packaging bag is settled, then closing the blanking valve 32 and withdrawing the piston rod of the cylinder 43, enabling the rubber strip 48 to be tightly embraced on the outer peripheral surface of the packaging bag, avoiding the packaging bag from toppling over, then extending the piston rod of the cylinder 43, and enabling the rubber strip 48 to loosen the packaging bag, the drive motor 52 is then activated to allow the bag to be transported under the operator's hold.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an environment-friendly powder quantitative weighing equipment, includes support (1), fixedly connected with feed bin (11) and lower hopper (12) on support (1), feed bin (11) with connect through screw conveyer (5) between lower hopper (12), screw conveyer (5) include step motor (21), carry a section of thick bamboo (22) and carry spiral (23), step motor (21) with carry a section of thick bamboo (22) equal fixed connection on support (1), the both ends of carrying a section of thick bamboo (22) communicate respectively feed bin (11) with lower hopper (12), carry spiral (23) wear to establish in carrying a section of thick bamboo (22) and with carry a section of thick bamboo (22) coaxial rotation is connected, carry spiral (23) with the coaxial fixed connection of output shaft of step motor (21), its characterized in that,

the bracket (1) is also provided with a weighing device (3), the weighing device (3) comprises a weighing cylinder (31), a blanking valve (32) and a plurality of weighing sensors (33), the weighing cylinder (31) is coaxially arranged and communicated with the blanking hopper (12), the weighing cylinder (31) is connected with the blanking hopper (12) in a sliding way along the self axis, the blanking valve (32) is fixedly connected with one side of the weighing cylinder (31) far away from the blanking hopper (12), the weighing sensors (33) are uniformly distributed along the circumferential direction of the weighing cylinder (31), one end of the weighing sensor (33) is fixedly connected with the lower hopper (12), the other end of the weighing sensor (33) is fixedly connected with the weighing cylinder (31), the weighing sensor (33) is electrically connected with the stepping motor (21), and the weighing sensor (33) is also electrically connected with the blanking valve (32).

2. The environment-friendly powder quantitative weighing equipment as claimed in claim 1, wherein: the weighing device (3) further comprises a corrugated pipe (34), one end of the corrugated pipe (34) is fixedly connected with the outer peripheral surface of the discharging hopper (12), and the other end of the corrugated pipe (34) is fixedly connected with the outer peripheral surface of the weighing cylinder (31).

3. The environment-friendly powder quantitative weighing equipment as claimed in claim 1, wherein: still be provided with fixture (4) on weighing cylinder (31), fixture (4) include first clamping jaw (41) and second clamping jaw (42), first clamping jaw (41) with second clamping jaw (42) all rotate and are connected on the outer peripheral face of weighing cylinder (31), just first clamping jaw (41) with second clamping jaw (42) set up respectively the both sides in weighing cylinder (31) axle center.

4. The environment-friendly powder quantitative weighing device as claimed in claim 3, wherein: the clamping mechanism (4) further comprises an air cylinder (43), one end of the air cylinder (43) is rotatably connected with the first clamping jaw (41), the other end of the air cylinder (43) is rotatably connected with the second clamping jaw (42), and the weighing sensor (33) is electrically connected with the air cylinder (43).

5. The environment-friendly powder quantitative weighing device as claimed in claim 3, wherein: fixture (4) still includes first stopper (44) and second stopper (45), first stopper (44) and the equal fixed connection of second stopper (45) are in on the outer peripheral face of weighing cylinder (31), first stopper (44) with second stopper (45) are followed the axle center symmetry of weighing cylinder (31) sets up, just first stopper (44) with first clamping jaw (41) are close to one side butt in weighing cylinder (31) axle center, second stopper (45) with second clamping jaw (42) are close to one side butt in weighing cylinder (31) axle center.

6. The apparatus for quantitatively weighing environment-friendly powder material as claimed in any one of claims 3 to 5, wherein: first clamping jaw (41) includes head rod (411) and second connecting rod (412), head rod (411) with second connecting rod (412) symmetry sets up the both sides in weighing cylinder (31) axle center, second clamping jaw (42) includes third connecting rod (421) and fourth connecting rod (422), third connecting rod (421) with fourth connecting rod (422) also symmetry sets up the both sides in weighing cylinder (31) axle center, head rod (411) with fixedly connected with rubber strip (48) between second connecting rod (412), third connecting rod (421) with also fixedly connected with rubber strip (48) between fourth connecting rod (422).

7. The environment-friendly powder quantitative weighing equipment of claim 6, wherein: an elastic rope (49) is fixedly connected between the first connecting rod (411) and the second connecting rod (412), an elastic rope (49) is fixedly connected between the third connecting rod (421) and the fourth connecting rod (422), and the elastic rope (49) is sleeved on the outer peripheral surface of the weighing cylinder (31).

8. The environment-friendly powder quantitative weighing equipment of claim 6, wherein: fixture (4) still includes third stopper (46) and fourth stopper (47), third stopper (46) and the equal fixed connection of fourth stopper (47) are in on the outer peripheral face of weighing cylinder (31), third stopper (46) with fourth stopper (47) are followed the axle center symmetry of weighing cylinder (31) sets up, just third stopper (46) with first clamping jaw (41) are kept away from one side butt in weighing cylinder (31) axle center, fourth stopper (47) with second clamping jaw (42) are kept away from one side butt in weighing cylinder (31) axle center.

9. The environment-friendly powder quantitative weighing device of claim 7, wherein: the weighing cylinder (31) is far away from the outer peripheral surface of one end of the discharging hopper (12) and is fixedly connected with a clamping block (311), and the clamping block (311) is clamped with the elastic rope (49).