Powder material siltation-preventing discharging device

Abstract

The utility model discloses a powder material silting prevention discharging device which comprises a container body, a barrel cover, a barrel cover and a spring discharging device, the spring discharging device comprises a lower support, a spring, an upper support, a pulley, a traction rope, a sliding block, a sliding rail, a connecting rod mechanism, a rotating wheel and a driving motor, and a lower hook of the spring is fixedly connected with a first circular ring on the lower support. The upper hook is fixedly connected with a second circular ring at the lower end of a traction rope, the traction rope is wound on a pulley, the other end of the traction rope penetrates through the left side wall of the can cover and is fixedly connected with one side of an external sliding block, the sliding block is clamped in a sliding rail and is in linear moving connection with the sliding rail, and the other side of the sliding block is hinged to one end of a double-connecting-rod mechanism; the other end of the double-link mechanism is fixedly connected with the outer side of the runner. According to the utility model, the spring discharging device is arranged, so that the spring telescopically moves in the container body at a certain frequency so as to generate a friction effect with the powder material, the deposition state of the powder material is broken, and the powder material is promoted to smoothly discharge and flow under the action of gravity.

Description

Technical Field

[0001] The utility model relates to the technical field of powder storage and discharging, in particular to a powder material anti-siltation discharging device. Background Art

[0002] In the existing containers for storing powder materials, after the powder materials are stored in the containers for a certain period of time and the valve of the storage container is opened, it is difficult for the powder materials to be discharged under the action of gravity. Especially for powder materials with poor fluidity, even adding a vibration hammer cannot meet the smooth discharging requirement, and they often silt and agglomerate, affecting the smooth flow of the powder materials during the production process.

[0003] Currently, to solve the above problems, the commonly adopted treatment methods are manual stirring and discharging, with low automation. Or adding a stirring paddle in the container and matching it with a motor drive, which is highly complex and costly. Summary of the Utility Model

[0004] To solve the problems that the powder materials stored in the existing containers for a certain period of time silt and agglomerate, and it is difficult for the powder materials with poor fluidity to be smoothly discharged under the action of a vibration hammer and gravity, the utility model provides a powder material anti-siltation discharging device. By setting a spring discharging device, the spring expands and contracts in the container body at a certain frequency, so as to generate a frictional effect with the powder materials, break the silted state of the powder materials, and promote the smooth discharging and flow of the powder materials under the action of gravity.

[0005] To achieve the above purpose, the utility model provides a powder material anti-siltation discharging device, which includes a container body. A barrel cover is provided at the upper end of the container body, and a feed inlet is provided in the middle of the upper end of the barrel cover. A discharge outlet is provided at the lower end of the container body, and a discharge valve is provided at the discharge outlet. It is characterized in that: it further includes a spring discharging device, and the spring discharging device includes a lower bracket, a spring, an upper bracket, a pulley, a traction rope, a slider, a slide rail, a link mechanism, a runner and a driving motor. One end of the lower bracket is fixedly connected to the inner side wall on the left side of the discharge outlet, and the other end is connected with a first ring. Upper and lower hooks are respectively provided at the upper and lower ends of the spring, and the lower hook is fixedly connected to the first ring by hooking. One end of the upper bracket is fixedly connected to the inner side wall on the left side of the barrel cover, and the pulley is installed at the other end of the upper bracket. The traction rope is wound around the pulley, and one end is connected with a second ring, and the second ring is fixedly connected to the upper hook by hooking. The other end of the traction rope passes through the left side wall of the barrel cover and is fixedly connected to one side of an external slider. The slider is clamped in the slide rail and forms a linearly movable connection with the slide rail. The other side of the slider is hinged to one end of a double link mechanism, and the other end of the double link mechanism is eccentrically fixedly connected to the runner. The runner is sleeved on the output shaft of the driving motor, and the driving motor drives the runner to rotate, and the runner can drive the slider to move back and forth linearly in the slide rail.

[0006] Further, the lower part of the container body is provided as a cone with a gradually decreasing outer diameter, and the spring is provided as a conical spring with a larger upper part and a smaller lower part.

[0007] Further, a through hole is provided on the left side wall of the bucket lid, the towing rope passes through the through hole, and a towing rope hook is connected to the end. A pull rod is provided on the left side surface of the slider, and a third ring is provided at the end of the pull rod. The towing rope hook is fixedly connected to the third ring by hooking.

[0008] Further, the slide rail is provided as a U-shaped or C-shaped bending plate, and the opening of the U-shaped or C-shaped bending plate faces forward. The slider is arranged in the chute of the U-shaped or C-shaped bending plate.

[0009] Further, an arc-shaped guide rail protruding forward is provided on the inner side surface of the rear side wall of the U-shaped bending plate, and an arc-shaped groove matching the arc-shaped guide rail is provided on the rear side surface of the slider. The slider is clamped on the arc-shaped guide rail through the arc-shaped groove and can move linearly left and right along the arc-shaped guide rail.

[0010] Further, the link mechanism includes a first link and a second link. One end of the first link is hinged to one end of the second link. A bearing mounting hole is provided at the other end of the first link, and a rolling bearing is provided in the bearing mounting hole. A fixed shaft is provided in the middle of the front side surface of the slider. The outer ring of the rolling bearing is fastened to the bearing mounting hole, and the inner ring is fastened to the fixed shaft. The other end of the second link is fixedly connected to the outer circular surface of the runner.

[0011] Further, the driving motor is provided as a servo motor, which can rotate forward and backward, can drive the runner to rotate back and forth within a set rotation angle, is used to drive the spring to move at a set expansion and contraction frequency, break up the accumulated and difficult-to-flow powder material, and smoothly discharge the material under the action of gravity.

[0012] The present invention also provides a discharging method for the above anti-siltation type gravity feeding container: after receiving a downstream material demand instruction, the runner should be started a certain time t in advance before discharging at the discharging port. The runner rotates under the drive of the servo motor, respectively driving the double link mechanism, the slider, and the towing rope to move, thereby driving the spring to expand and contract.

[0013] During the movement process, the servo motor rotates forward and backward, and the servo motor controls the forward and backward rotation angles. The movement angle is controlled within the range of θ0~θ1, where θ0 is the initial azimuth angle of the second link when the servo motor rotates forward. Correspondingly, the range of linear movement of the slider is L0~L1, where L0 is the initial azimuth of the slider. The expansion and contraction amount of the spring in the container body is L1 - L0, and the expansion and contraction cycle frequency f depends on the working speed of the servo motor. If the forward and backward rotation speed of the servo motor is n r / min, then the expansion and contraction frequency of the spring is f = 3n / (θ1 - θ0) Hz.

[0014] It should be noted that the elastic coefficient K (N / mm) of the spring and the stroke of the telescopic motion determine the working torque of the servo motor. Ignoring the friction between the traction rope and the pulley, and between the slider and the slide rail, the driving force provided by the servo motor to the spring should at least satisfy F = K(L1 - L0).

[0015] After the spring works for t time, the spring and the powder raw material undergo N = 2ft times of mutual friction motion. At this time, when the discharge valve is opened, the powder raw material discharges along the discharge port under the dual action of the longitudinal friction force and gravity of the spring. During the discharging process, the spring still maintains telescopic motion, and the telescopic motion time can be freely set until the material is completely discharged.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By setting the spring discharging device, the spring undergoes telescopic motion at a certain frequency within the container body, thereby generating a friction effect with the powder material, breaking the accumulation state of the powder material, and promoting the smooth discharging and flow of the powder material under the action of gravity;

[0018] 2. The structure of the present utility model is simple, and the installation, disassembly and maintenance are convenient. The spring discharging device can be self-installed and adjusted as needed. For example, if the powder material has good fluidity, the spring discharging device can be removed, and it has good interchangeability;

[0019] 3. By setting the angle range of the forward and reverse rotation of the servo motor, calculating the spring telescopic frequency and the driving torque required for the servo motor drive, the discharging time of materials in different accumulation states can be controlled smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the first state of the spring in the embodiment of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the second state of the spring in the embodiment of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the spring discharging device in the embodiment of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the arc-shaped guide rail and the slider in the embodiment of the present utility model.

[0024] In the figure: 1. Container body, 101. Discharge port, 2. Bucket cover, 201. Feed port, 202. Through hole, 3. Spring discharging device, 301. First ring, 302. Lower hook, 303. Lower bracket, 304. Spring, 305. Upper hook, 306. Second ring, 307. Towing rope, 308. Pulley, 309. Upper bracket, 310. Towing rope hook, 311. Third ring, 312. Pull rod, 313. Slide rail, 314. Slide block, 3141. Fixed shaft, 3142. Arc-shaped groove, 315. First connecting rod, 316. Rolling bearing, 317. Second connecting rod, 318. Runner, 319. Servo motor, 320. Circular guide rail, 4. Discharge valve, 5. Powder material. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the corresponding drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] As Figure 1 shown, the embodiment of the present invention includes a container body 1 and a spring discharging device 3.

[0028] A bucket cover 2 is provided at the upper end of the container body 1, a feed port 201 is provided in the middle of the upper end of the bucket cover 2, a discharge port 101 is provided at the lower end of the container body 1, and a discharge valve 4 is provided at the discharge port 101.

[0029] The spring discharging device 3 includes a lower bracket 303, a spring 304, an upper bracket 309, a pulley 308, a towing rope 307, a slider 314, a slide rail 313, a link mechanism, a runner 318 and a driving motor 319. One end of the lower bracket 303 is fixedly connected to the inner left side wall of the discharging port 101, and the other end is connected with a first ring 301. The upper and lower ends of the spring 304 are respectively provided with an upper hook 305 and a lower hook 302. The lower hook 302 is fixedly connected to the first ring 301 by hooking. One end of the upper bracket 309 is fixedly connected to the inner left side wall of the bucket cover 2, and the pulley 308 is installed at the other end of the upper bracket 309. The towing rope 307 is wound around the pulley 308, and one end is connected with a second ring 306. The second ring 306 is fixedly connected to the upper hook 305 by hooking. The other end of the towing rope 307 passes through the left side wall of the bucket cover 2 and is fixedly connected to one side of an external slider 314. The slider 314 is clamped in the slide rail 313 and forms a linearly movable connection with the slide rail 313. The other side of the slider 314 is hinged to one end of a double link mechanism, and the other end of the double link mechanism is eccentrically and fixedly connected to the runner 318. The runner 318 is sleeved on the output shaft of the servo motor 319. The servo motor 319 drives the runner 318 to rotate, and the runner 318 can drive the slider 314 to move back and forth linearly in the slide rail 313.

[0030] Further, the lower part of the container body 1 is set as a conical shape with an outer diameter gradually decreasing, and the spring 304 is set as a conical spring with a larger upper part and a smaller lower part.

[0031] Further, a through hole 202 is provided on the left side wall of the bucket cover 2. The towing rope 307 passes through the through hole 202, and the end is connected with a towing rope hook 310. A pull rod 312 is provided on the left side surface of the slider 314, and a third ring 311 is provided at the end of the pull rod 312. The towing rope hook 310 is fixedly connected to the third ring 311 by hooking.

[0032] Further, the slide rail 313 is set as a U-shaped bending plate, and the opening of the U-shaped bending plate faces forward. The slider 314 is arranged in the chute of the U-shaped bending plate.

[0033] Further, an arc-shaped guide rail 320 protruding forward is provided on the inner side surface of the rear side wall of the U-shaped bending plate. An arc-shaped groove 3142 matching with the arc-shaped guide rail 320 is provided on the rear side surface of the slider 314. The slider 314 is clamped on the arc-shaped guide rail 320 through the arc-shaped groove 3142 and can move linearly left and right along the arc-shaped guide rail 3142.

[0034] Further, the linkage mechanism includes a first connecting rod 315 and a second connecting rod 317. One end of the first connecting rod 315 is hinged to one end of the second connecting rod 317. A bearing mounting hole is provided at the other end of the first connecting rod 315. A rolling bearing 316 is provided in the bearing mounting hole. A fixed shaft 3141 is provided in the middle of the front side of the slider 314. The outer ring of the rolling bearing 316 is fastened to the bearing mounting hole, and the inner ring is fastened to the fixed shaft 3141. The other end of the second connecting rod 317 is fixedly connected to the outer circumferential surface of the runner 318.

[0035] Further, the servo motor 319 can rotate forward and backward, and can drive the runner 319 to rotate back and forth within a set rotation angle, so as to drive the spring to move at a set expansion and contraction frequency, break up the powdery material 5 that is difficult to flow and accumulate, and smoothly discharge the material under the action of gravity.

[0036] The discharging method of the anti-silting gravity feeding container in this embodiment:

[0037] 1. Feeding

[0038] As Figure 1 . 2 shown, through the feed inlet 201 and the barrel cover 2, the powdery material 5 flows into the container body 1 from the upstream, and is stored in the container body 1 to a certain height. The stacking height can generally submerge the spring (in the natural elongation state).

[0039] 2. Storage

[0040] After a certain amount of powdery material 5 is stored in the container body 1, according to the urgency of downstream demand, the storage time of the powdery material 5 in the container body 1 is determined.

[0041] 3. Discharging

[0042] As Figure 1 . 2 shown, after receiving the downstream material demand instruction, the runner 318 should be started 5 seconds in advance before discharging. The runner 318 rotates under the drive of the servo motor 319, and drives the linkage mechanism, the slider 314, and the towing rope 307 to move, and then drives the spring 304 to expand and contract.

[0043] During the movement, the servo motor 319 rotates forward and backward, and the servo motor 319 controls the forward and backward rotation angles. The movement angle is controlled within the range of θ0 to θ1, where θ0 = 90°, θ1 = 180°. Among them, θ0 is the initial azimuth angle of the second connecting rod when the servo motor rotates forward. Correspondingly, the range of linear movement of the slider 314 is L0 to L1, where L0 = 10 mm and L1 = 40 mm. Among them, L0 and L1 are the distances from the left side of the initial position and the end position of the slider 314 to the left side of the slide rail 313, causing the spring 304 to expand and contract by L1 - L0 = 30 mm in the container body 1.

[0044] The telescopic cycle frequency f depends on the operating speed of the servo motor 319. When the forward and reverse rotation speeds of the servo motor 319 are 15 r / min, the telescopic frequency of the spring 304 is f = 3n / (θ1 - θ0) = 0.5 Hz.

[0045] In this embodiment, the elastic coefficient of the spring is 2 N / mm. The elastic coefficient K of the spring 304 and the stroke of the telescopic motion determine the working torque of the servo motor 319. When the frictions between the traction rope 307 and the pulley 308, and between the slider 314 and the slide rail 313 are ignored, the driving force provided by the servo motor 319 to the spring 304 should at least satisfy F = K(L1 - L0) = 2×30 = 60 N.

[0046] After the spring 304 works for t = 5 seconds, the spring 304 and the powder raw material 5 undergo N = 2f×t = 2×0.5×5 = 5 mutual friction motions. At this time, the discharge valve 4 is opened, and the powder material 5 discharges along the discharge port 101 under the dual action of the longitudinal friction force and gravity of the spring 304 and flows downstream. During the discharging process, the spring 304 still maintains the telescopic motion, and the telescopic motion time can be freely set until the powder material 5 is completely discharged.

[0047] So far, the discharging of all the powder materials 5 in the container body 1 is completed.

[0048] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A powder material anti-siltation discharging device, comprising a container body, a barrel cover is provided at the upper end of the container body, a feed port is provided in the middle of the upper end of the barrel cover, a discharge port is provided at the lower end of the container body, and a discharge valve is provided at the discharge port, characterized in that: It also includes a spring discharging device, which includes a lower bracket, a spring, an upper bracket, a pulley, a traction rope, a slider, a slide rail, a connecting rod mechanism, a rotating wheel and a driving motor, wherein one end of the lower bracket is fixedly connected to the inner wall on the left side of the discharging port, and the other end is connected to a first ring, the upper and lower ends of the spring are respectively provided with an upper hook and a lower hook, the lower hook is hooked and fixedly connected to the first ring, one end of the upper bracket is fixedly connected to the inner wall on the left side of the barrel cover, the pulley is installed at the other end of the upper bracket, the traction rope is wound around the pulley, one end is connected to a second ring, the second ring is hooked and fixedly connected to the upper hook, the other end of the traction rope passes through the left side wall of the barrel cover and is fixedly connected to one side of the external slider, the slider is clamped in the slide rail, and forms a linearly movable connection with the slide rail, the other side of the slider is hinged to one end of the double-link mechanism, the other end of the double-link mechanism is eccentrically fixedly connected to the rotating wheel, the rotating wheel is sleeved on the output shaft of the driving motor, the driving motor drives the rotating wheel to rotate, and the rotating wheel can drive the slider to move linearly back and forth in the slide rail.

2. A powder material anti-siltation discharging device according to claim 1, characterized in that: The lower part of the container body is configured as a cone with a gradually decreasing outer diameter, and the spring is configured as a conical spring with a larger upper part and a smaller lower part.

3. A powder material anti-siltation discharging device according to claim 1, characterized in that: A through hole is provided on the left side wall of the barrel cover, the traction rope passes through the through hole, and the end is connected to a traction rope hook. A pull rod is provided on the left side surface of the slider, and a third ring is provided at the end of the pull rod. The traction rope hook is hooked and fixedly connected with the third ring.

4. A powder material anti-silting discharging device according to claim 1, characterized in that: The slide rail is configured as a U-shaped or C-shaped bending plate, the opening of the U-shaped or C-shaped bending plate faces the front side, and the sliding block is disposed in a sliding groove of the U-shaped or C-shaped bending plate.

5. A powder material anti-silting discharging device according to claim 4, characterized in that: A circular arc guide rail protruding forward is provided on the inner side surface of the rear side wall of the U-shaped bending plate, and an arc groove matching the circular arc guide rail is provided on the rear side surface of the slider. The slider is clamped on the circular arc guide rail through the circular arc groove and can move left and right in a straight line along the circular arc guide rail.

6. A powder material anti-siltation discharging device according to claim 1, characterized in that: The connecting rod mechanism includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the first connecting rod is provided with a bearing mounting hole, a rolling bearing is provided in the bearing mounting hole, a fixed shaft is provided in the middle of the front side surface of the slider, the outer ring of the rolling bearing is fastened to the bearing mounting hole, and the inner ring is fastened to the fixed shaft, and the other end of the second connecting rod is fixedly connected to the outer cylindrical surface of the rotating wheel.

7. The powder material anti-silting discharging device according to claim 1, characterized in that: The driving motor is configured as a servo motor, which can rotate forward and reverse, and can drive the rotating wheel to rotate back and forth within a set rotation angle, and is used to drive the spring to move at a set expansion and contraction frequency, to break up the powder material that is difficult to flow, and to discharge the material smoothly under the action of gravity.

Images