Packing scale special for powdery sodium cyanide and control method thereof

Abstract

The invention relates to the technical field of packing scale equipment, and provides a special packing scale for powdery sodium cyanide and a control method thereof.The special packing scale comprises a feeding hopper and a vibration table which are distributed up and down, a connecting flange coaxially fixed to a discharging opening of the feeding hopper, and a receiving hopper which is coaxially connected to the connecting flange in a sleeving mode, and the outer wall of the receiving hopper is annularly provided with a driving gear and is driven by a motor on the feeding hopper; at least one concave cavity is formed in the side wall of the receiving hopper, a rod body is hinged in the concave cavity, a replaceable balancing weight is arranged at the free end of the rod body, when the receiving hopper rotates, the rod body is unfolded under the action of centrifugal force and knocks a ton bag sling, meanwhile, the vibration table acts on the bottom of a ton bag, and the vibration table and the receiving hopper cooperatively excite the standing wave effect of the ton bag. The rod body periodically knocks the sling under the action of centrifugal force, and the frequency can be adjusted through the balancing weight. When the knocking frequency is close to the inherent frequency of the ton bag, vibration of the hanging belt can be transmitted to the whole bag body, the resonance phenomenon is caused, the vibration table at the bottom is matched to excite the standing wave effect, and loosening and even distribution of materials are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging scale equipment, in particular to a special packaging scale for powdered sodium cyanide and a control method thereof. Background Art

[0002] Powdered sodium cyanide faces many challenges during the packaging process due to its easy agglomeration and poor fluidity.

[0003] Traditional packaging scales usually use bottom vibration, but due to the uneven distribution of vibration energy, it is difficult to effectively loosen the top material, resulting in uneven material distribution, affecting packaging efficiency and product quality. Existing technology also uses slapping the bag body, acting on the outer surface of the bag, and transmitting the external impact force to the material inside the bag to try to loosen the accumulated or agglomerated materials. However, it is difficult to effectively transmit vibration energy to the top by slapping the bottom or side of the bag. For this reason, we propose a special packaging scale for powdered sodium cyanide. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a special packaging scale for powdered sodium cyanide and a control method thereof, which overcomes the deficiencies of the prior art, has a reasonable design and a compact structure, and solves the problems raised in the background art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A special packaging scale for powdered sodium cyanide includes a feeding hopper and a vibration table distributed above and below, a connecting flange coaxially fixed to the discharge port of the feeding hopper, and a receiving hopper coaxially sleeved on the connecting flange. A driving gear is arranged on the outer wall of the receiving hopper and is driven by a motor on the feeding hopper. At least one concave cavity is provided on the side wall of the receiving hopper, and a rod body is hinged in the concave cavity. A replaceable counterweight block is provided at the free end of the rod body. When the receiving hopper rotates, the rod body expands under the action of centrifugal force and strikes the sling of the ton bag. At the same time, the vibration table acts on the bottom of the ton bag, and the two cooperate to stimulate the standing wave effect of the ton bag.

[0006] Preferably, a rotating shaft is coaxially provided inside the receiving hopper, and the rotating shaft is circumferentially connected to multiple groups of connecting rods for crushing.

[0007] Preferably, it also includes a turntable, which is coaxially sleeved on the rotating shaft and has a through hole at the bottom of the turntable.

[0008] Preferably, it also includes a sleeve, which is eccentrically arranged on the rotating shaft and the connecting ears on both sides extend toward the turntable, and the connecting ears are also connected to sliders, one of which is intermittently engaged with the tooth grooves opened on the wall of the turntable to control the rotation of the turntable.

[0009] Preferably, a rocker arm is sleeved on the rotating shaft and is located between the turntable and the shaft sleeve, and a slide rail connected to the rocker arm is in sliding cooperation with the slider.

[0010] Preferably, another slider is slidably engaged with the tooth groove to achieve position limiting of the turntable.

[0011] Preferably, a vibration of 2-5 Hz is applied to the bottom of the bag by a vibration table; Drive the receiving hopper to rotate at 20-50rpm, causing the rod to centrifugally expand and strike the sling; Adjust the mass of the counterweight block to make the sling amplitude 3-5mm, exciting the standing wave in the whole space of the ton bag.

[0012] The present invention provides a special packaging scale for powdered sodium cyanide. It has the following beneficial effects: 1. The rod periodically strikes the sling under the action of centrifugal force. The frequency can be adjusted by the counterweight. When the striking frequency approaches the natural frequency of the ton bag, the sling vibration is transmitted to the entire bag, causing resonance. The vibration table at the bottom stimulates a standing wave effect, achieving loosening and uniform distribution of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 3D schematic diagram of Figure 3 For the present invention Figure 1 Schematic diagram of the initial state; Figure 4 For the present invention Figure 3 Schematic diagram of the motion state; Figure 5 For the present invention Figure 3 The top schematic diagram of Figure 6 For the present invention Figure 5 A schematic cross-sectional view of AA; Figure 7 For the present invention Figure 3 Schematic diagram of the internal structure; Figure 8 For the present invention Figure 7 Partial schematic diagram of Figure 9 For the present invention Figure 7 Partial schematic diagram.

[0014] In the figure: 1. Connecting flange; 2. Material receiving hopper; 21. Driving gear; 22. Concave cavity; 23. Rod body; 3. Rotating shaft; 31. Connecting rod; 4. Turntable; 41. Through hole; 42. Tooth groove; 5. Rocker arm; 51. Slide rail; 6. Bushing; 61. Connecting ear; 62. Slider; 7. Material feeding hopper; 8. Vibrating table. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the description is only a part of the present invention, not all of it. Based on the present invention, all other ideas obtained by persons of ordinary skill in the art without creative effort shall fall within the scope of protection of the present invention.

[0016] Refer to the attached Figures 1-9 A special packaging scale for powdered sodium cyanide and a control method thereof include a connecting flange 1, a feeding hopper 7 and a vibrating table 8 distributed above and below, the discharge port of the feeding hopper 7 being opened and closed by a valve, wherein the connecting flange 1 is coaxially connected and fixed to the discharge port of the feeding hopper 7 by bolts, and when the material is discharged from the feeding hopper 7, it can enter the connecting flange 1; The receiving hopper 2 is also included. The receiving hopper 2 is coaxially rotatably sleeved on the connecting flange 1 through a bearing, and a driving gear 21 is provided on the receiving hopper 2. The driving gear 21 is connected to the motor installed on the feeding hopper 7 through gear meshing, so that the motor can drive the receiving hopper 2 to rotate on the connecting flange 1. At least one concave cavity 22 is provided on the side wall of the receiving hopper 2, and a rod body 23 is hinged on the concave cavity 22. A counterweight block is also installed on the free end of the rod body 23, which is not shown in the figure. The counterweight block can be replaced as required to adjust the strength of the sling and change the resonance frequency. When the motor drives the receiving hopper 2 to rotate, the rod body 23 unfolds under the action of centrifugal force and knocks on the slings of the ton bag one by one, triggering the resonance of the ton bag. The traditional vibrator only acts on the bottom of the bag, and the material on the top cannot be loosened. The present invention cooperates with the vibration table 8 to vibrate the bottom of the bag while cooperating with the sling vibration. During the filling of the ton bag, the sling vibration excites the standing wave effect, so that the vibration energy is evenly distributed throughout the bag, reducing local accumulation and caking. If the material contains light and heavy components, the sling vibration induces a vertical vibration screening effect, the heavy particles accelerate the sedimentation, and the light particles float to the surface. It can also achieve separation and sedimentation of multi-layer composite materials.

[0017] A rotating shaft 3 is coaxially provided inside the receiving hopper 2, and at least two groups of connecting rods 31 connected to the inner wall of the receiving hopper 2 are provided on the circumference of the rotating shaft 3. When the material falls from the receiving hopper 2, the rotating receiving hopper 2 drives the rotating shaft 3 and the connecting rods 31 to rotate, breaking up the agglomerated material.

[0018] An open turntable 4 is sleeved on the rotating shaft 3. A plurality of through holes 41 are formed around the bottom of the turntable 4 for the outflow of materials, and tooth grooves 42 are formed downward on the peripheral wall of the turntable 4. A rocker 5 is sleeved on the rotating shaft 3. The rocker 5 is fitted to the bottom wall of the turntable 4 and extends to the inner side of the peripheral wall of the turntable 4. A slide rail 51 is also provided on the rocker 5. The direction of the slide rail 51 is consistent with that of the rocker 5. An eccentrically arranged sleeve 6 is also fixedly sleeved on the rotating shaft 3, and a pair of connecting ears 61 are connected to the sleeve 6, and a slider 62 is connected to the connecting ear 61, one of the sliders 62 slidingly cooperates with the slide rail 51 and is consistent with the size of the tooth groove 42. When the rotating shaft 3 rotates and drives the eccentrically arranged sleeve 6, the sleeve 6 will slide in the slide rail 51 and intermittently drive the rotation of the turntable 4 with the tooth groove 42. The rotating turntable 4 continuously changes the impact point of the material flow, so that the direction in which the material is thrown changes dynamically within a small angle range. The landing area of ​​the material in the receiving hopper 2 below is no longer fixed, but forms a small fan-shaped or annular area, which effectively prevents the material from piling up at one point and significantly improves the uniformity of material distribution. Since the rotation of the turntable 4 also has the function of disturbing the material flow, for materials with slightly poor fluidity, this disturbance can help break the tiny adsorption force or friction between particles, play a certain flow-aiding role, and make the material flow smoother. Moreover, this method of driving the turntable 4 to rotate will not produce a high rotation speed. The relative impact speed between the low-speed rotating turntable 4 and the material particles is low. The rotational motion of the disc itself and the sliding friction of the material on its surface can prevent fine powder or sticky materials from adhering to and accumulating on the surface of the deflector plate for a long time, and has a self-cleaning effect. In addition, since the rocker arm 5 is sleeved on the rotating shaft 3 and slides with the slider 62, when the slider 62 drives the turntable 4 to rotate, it also drives the rocker arm 5 to rotate with the rotating shaft 3 as the axis. Even if the material falls on the bottom of the turntable 4, it can still be pushed into the through hole 41 to be discharged, and it also has a further cleaning effect on the bottom of the turntable 4.

[0019] Another slider 62 is slidably engaged with the tooth groove 42 to limit the turntable 4 , thereby preventing the turntable 4 from rotating when the slider 62 slidably engaged with the slide rail 51 slides out of the tooth groove 42 .

[0020] Turn on the sling excitation unit and vibration table 8 to excite the ton bag standing wave frequency of 2-5Hz; Control the turntable 4 to rotate at 8-15 rpm so that the material falls in a circular distribution; By adjusting the mass of the counterweight, the sling amplitude is maintained at 3-5mm.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0022] The above is only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing, those skilled in the art should understand that they can still modify the aforementioned technical solutions or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the various technical solutions of the present invention.

Claims

1. A special packaging scale for powdered sodium cyanide, comprising a feeding hopper (7) and a vibration table (8) arranged above and below, and a connecting flange (1) coaxially fixed to the discharge port of the feeding hopper (7); Its characteristics are: It also includes a receiving hopper (2) which is coaxially sleeved on the connecting flange (1), and a driving gear (21) is provided on the outer wall thereof and is driven by a motor on the feeding hopper (7); The side wall of the receiving hopper (2) is provided with at least one concave cavity (22), a rod body (23) is hinged in the concave cavity (22), and a replaceable counterweight block is provided at the free end of the rod body (23); When the receiving hopper (2) rotates, the rod body (23) unfolds and strikes the sling of the ton bag under the action of centrifugal force, and at the same time, the vibration table (8) acts on the bottom of the ton bag, and the two cooperate to excite the standing wave effect of the ton bag.

2. The special packaging scale for powdered sodium cyanide according to claim 1, wherein: A rotating shaft (3) is coaxially arranged inside the receiving hopper (2), and the rotating shaft (3) is circumferentially connected to multiple groups of connecting rods (31) for crushing.

3. The special packaging scale for powdered sodium cyanide according to claim 1, wherein: It also includes a turntable (4) which is coaxially sleeved on the rotating shaft (3) and has a through hole (41) at the bottom of the turntable.

4. The special packaging scale for powdered sodium cyanide according to claim 3, wherein: The invention also includes a shaft sleeve (6) eccentrically arranged on the rotating shaft (3) and having connecting ears (61) on both sides thereof extending in the direction of the turntable (4), and the connecting ears (61) are further connected to sliders (62), one of the sliders (62) intermittently meshing with a tooth groove (42) provided on the wall of the turntable (4) to control the rotation of the turntable (4).

5. The special packaging scale for powdered sodium cyanide according to claim 4, wherein: The rotating shaft (3) is also sleeved with a rocker rod (5) located between the turntable (4) and the shaft sleeve (6), and the slide rail (51) connected to the rocker rod (5) is in sliding engagement with the slider (62).

6. The special packaging scale for powdered sodium cyanide according to claim 4, wherein: Another slider (62) is slidably engaged with the tooth groove (42) to achieve position limiting of the turntable (4).

7. A control method for a special packaging scale for powdered sodium cyanide according to any one of claims 1 to 6, characterized in that: Apply 2-5 Hz vibration to the bottom of the bag via a vibration table (8); The receiving hopper (2) is driven to rotate at 20-50 rpm, so that the rod body (23) is centrifugally expanded to strike the sling; Adjust the mass of the counterweight block to make the sling amplitude 3-5mm, exciting the standing wave in the whole space of the ton bag.

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