An average material distribution device

Abstract

This utility model relates to an even distribution device, comprising: a main pipe with an inlet at the upper end and a main outlet at the lower end; a secondary pipe, one end of which is located in the middle of the main pipe and communicates with it, and the other end of which has a secondary outlet; a switching plate, inserted into the main pipe at the point where the main pipe and the secondary pipe communicate, which is inserted into the main pipe or retracted to switch the channel through which salt falls; a temporary storage plate, covering the main outlet and the secondary outlet; a driving mechanism, driving the opening and closing of the temporary storage plate and the insertion and retraction of the switching plate; a linkage mechanism, used to link the two temporary storage plates; a salt quantity sensor, used to monitor the amount of salt accumulated above the temporary storage plate; and a vibration mechanism, providing the device with high-frequency, low-amplitude vertical vibration. Through the cooperation of the switching plate and the temporary storage plate, intelligent switching of the salt flow channel and precise alternating opening and closing of the outlet are achieved, ensuring the uniformity of the dual-outlet distribution. This prevents salt accumulation and blockage, and ensures high accuracy in metering each discharge.

Description

Technical Field

[0001] This utility model relates to the field of material distribution device technology, and more specifically, to an average material distribution device. Background Technology

[0002] In the industrial production and packaging of salt, the rapid, precise, and even distribution of the salt flow from upstream to two or more downstream packaging lines or processing equipment is a crucial step that directly impacts production efficiency and product quality stability. As a daily necessity, the standardization of salt packaging specifications and the accuracy of its measurement are strictly regulated. However, the unique physical properties of salt, such as its tendency to absorb moisture and clump, and its fluidity changing with particle size and humidity, present numerous challenges to achieving uniform and continuous distribution.

[0003] Existing material distribution technologies mostly rely on simple three-way diversion pipes or fixed diversion plates. These devices depend on the material's own gravity and flowability for natural diversion. While their structure is simple, the distribution effect is often unsatisfactory. Because the salt flow trajectory within the pipe is random and easily affected by pipe wall friction and interparticle cohesion, significant deviations in the amount of salt falling from the two outlets frequently occur during actual operation. This results in some downstream packaging lines being overloaded while others are underloaded, leading not only to material waste but also potential product quality disputes due to inaccurate measurement. Furthermore, when it is necessary to switch the main feed line or perform maintenance and cleaning on a particular outlet, traditional devices often lack effective flow channel cutoff and switching mechanisms, necessitating a halt to the entire system's feeding, severely restricting production continuity.

[0004] To control the discharge, some equipment has installed simple gates or manual flaps at the discharge port. This type of structure has significant limitations: First, the opening and closing of the two valves are usually independent, making it difficult to ensure synchronization and interlocking. It cannot achieve precise linkage where "when one opens, the other must close," a fatal flaw in precise metering and dispensing scenarios. Second, there is no direct signal feedback between the valve's opening / closing status and the upstream salt flow. Operators cannot know the real-time situation of material accumulation above the valve and can only rely on experience or timed opening and closing, resulting in low automation and unreliable accuracy. More importantly, salt is particularly prone to bridging and adhesion at flow-blocking points like valves. Simple valves may not effectively cut off damp salt clumps when closed, or the sudden collapse of the accumulated clumps when opened may cause a momentary loss of control over the discharge rate.

[0005] For monitoring salt levels, the conventional approach is to install sensors on fixed pipes or silo walls. This method monitors the macroscopic material level and cannot accurately detect the instantaneous weight of the "critical material" that is about to be discharged from the outlet and dynamically accumulates on the valve. The lag and distortion of the monitoring signal make it difficult for the control system to issue valve action commands at the optimal time, thus affecting the accuracy of each dispensing weight.

[0006] In addition, ensuring a stable and smooth flow of salt within the device is another key challenge. During transport, if the salt encounters humidity fluctuations or brief shutdowns, it is prone to slight adhesion at pipe bends, branch interfaces, and around moving parts. This phenomenon can gradually worsen and lead to blockages. Ordinary mechanical vibrators, if improperly installed or configured, may generate strong impacts that could actually compact the fine salt particles, exacerbating bridging or damaging precision sensors and transmission components.

[0007] As described in Chinese utility model patent CN108891790A, a material distribution hopper includes a main hopper. The bottom of the main hopper is divided into two, extending downwards into two distribution hoppers. A lower flap is hinged to the bottom of the main hopper, with its hinge axis parallel to the intersection line of the two distribution hoppers. An upper flap is positioned above the lower flap, which is a V-shaped plate with its opening facing downwards. The free end of the lower flap is placed within the V-shaped cavity of the upper flap. A connecting rod is provided on the top edge of the V-shape of the upper flap, with its length parallel to the hinge axis. Both ends of the connecting rod are equipped with screw and nut mechanisms, which drive the upper flap to move perpendicular to the length of the connecting rod. The upper flap then drives the lower flap to rotate around its hinge axis. Although the amount of salt passing through the two channels can be adjusted in real time, the adjustment is delayed and cannot adapt to the situation of salt clumping and falling. Therefore, the even distribution effect is not accurate, and the moving mechanism is located inside the channel, making it prone to damage or jamming under the corrosion of salt. Utility Model Content

[0008] The main purpose of this invention is to provide an average distribution device that can accurately and evenly distribute salt into two channels according to weight and is not easily corroded or jammed.

[0009] To solve the above-mentioned technical problems, this utility model proposes an average material distribution device, comprising: a main pipe with an inlet at the upper end and a main outlet at the lower end; a secondary pipe with one end located in the middle of the main pipe and communicating with the main pipe, and the other end having a secondary outlet; a switching plate inserted into the main pipe, corresponding to the point where the main pipe and the secondary pipe communicate, and parallel to the bottom surface of the point where the secondary pipe and the main pipe communicate, inserted into the main pipe or retracted to switch the channel for salt to fall; two temporary storage plates, respectively rotatably mounted on the main outlet and the secondary outlet, covering the main outlet and the secondary outlet; a driving mechanism for driving the opening and closing of the temporary storage plates and the insertion and retraction of the switching plate; a linkage mechanism for linking the two temporary storage plates; two salt quantity sensors, respectively mounted on the two temporary storage plates, for monitoring the amount of salt accumulated above the temporary storage plates; and a vibration mechanism for providing high-frequency, low-amplitude vibration in the vertical direction for the device.

[0010] In the above technical solution, furthermore, the downward angle between the secondary pipe and the main pipe is an acute angle.

[0011] In any of the above technical solutions, a rotating shaft is further provided on the temporary storage plate, and the rotating shaft is located at one end of the temporary storage plate that is rotatably connected to the main discharge port or the auxiliary discharge port.

[0012] In any of the above technical solutions, the linkage mechanism further includes: a main pulley, disposed on the rotating shaft of the temporary storage plate at the main discharge port; an auxiliary pulley, disposed on the rotating shaft of the temporary storage plate at the auxiliary discharge port; and a transmission belt connecting the main pulley and the auxiliary pulley; wherein, when the temporary storage plate at the main discharge port is opened, the temporary storage plate at the auxiliary discharge port is closed, and when the temporary storage plate at the main discharge port is closed, the temporary storage plate at the auxiliary discharge port is opened.

[0013] In any of the above technical solutions, the driving mechanism further includes: a rack disposed on the bottom surface of the switching plate, the length direction of which is parallel to the length direction of the switching plate; a first gear meshing with the rack; a gear shaft rotatably disposed on the outer wall of the main pipe, one end of which is connected to the first gear; a second gear disposed on the end of the gear shaft away from the first gear, rotating synchronously with the first gear; a third gear meshing with the second gear; a motor disposed on the outer wall of the main pipe, electrically connected to the salt level sensor, the motor's drive shaft being coaxially connected to the third gear; and a fourth gear disposed on the rotating shaft of the temporary storage plate at the main discharge port, meshing with the third gear.

[0014] In any of the above technical solutions, a further step is to install a baffle above the connection between the main pipe and the secondary pipe inside the main pipe to prevent salt from falling directly into the secondary pipe. The upper surface of the baffle is provided with a slope to prevent salt from accumulating on it.

[0015] In any of the above technical solutions, the vibration mechanism further includes: a vibration cylinder, fixed to the outer wall of the main pipe, having a receiving cavity inside, and an exhaust port on its side wall; a vibration block, disposed inside the vibration cylinder, with its cross-section tightly fitted to the inner wall of the vibration cylinder; and a cylinder connected to the bottom surface of the receiving cavity through a pipe, continuously outputting compressed air into the receiving cavity; wherein the distance between the exhaust port and the top surface of the receiving cavity is greater than the height of the vibration block.

[0016] In any of the above technical solutions, the salt content sensor is further defined as a pressure sensor.

[0017] Beneficial effects: Compared with existing technologies, the combination of the switching plate and the temporary storage plate enables intelligent switching of the salt flow channel and precise alternating opening and closing of the discharge port, ensuring uniformity of material distribution from both outlets. The vibration mechanism effectively prevents salt accumulation and blockage, while direct monitoring by the salt quantity sensor ensures high accuracy in metering each discharge. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a perspective view of the internal structure of the pipe in this utility model; Figure 3 This is a schematic diagram of the driving and linkage structure of this utility model; Figure 4 This is a structural schematic diagram of the vibration mechanism of this utility model.

[0020] The annotations in the attached figures are explained as follows: Main pipe; 11. Inlet; 12. Main outlet; 13. Stop block; 2. Secondary pipe; 21. Secondary outlet; 3. Switching plate; 4. Temporary storage plate; 41. Rotating shaft; 5. Drive mechanism; 51. Rack; 52. First gear; 53. Gear shaft; 54. Second gear; 55. Third gear; 56. Motor; 57. Fourth gear; 6. Linkage mechanism; 61. Main pulley; 62. Secondary pulley; 63. Transmission belt; 7. Salt level sensor; 8. Vibration mechanism; 81. Vibration cylinder; 811. Receiving cavity; 812. Exhaust port; 82. Vibrating block; 83. Cylinder Detailed Implementation

[0021] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0023] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] This utility model proposes an average material distribution device.

[0027] The following embodiments will be used to describe the equal distribution device of this application in detail.

[0028] Example 1: like Figure 1 , 3 As shown, this embodiment proposes an average material distribution device, including: a main pipe with an inlet at the upper end and a main outlet at the lower end; a secondary pipe with one end located in the middle of the main pipe and connected to it, and the other end having a secondary outlet; a switching plate inserted into the main pipe, corresponding to the point where the main pipe and the secondary pipe connect, and parallel to the bottom surface of the point where the secondary pipe and the main pipe connect, inserted into the main pipe or retracted to switch the channel for salt to fall; two temporary storage plates, rotatably mounted on the main outlet and the secondary outlet respectively, covering the main outlet and the secondary outlet; a driving mechanism for driving the opening and closing of the temporary storage plates and the insertion and retraction of the switching plate; a linkage mechanism for linking the two temporary storage plates; two salt quantity sensors, respectively mounted on the two temporary storage plates, for monitoring the amount of salt accumulated above the temporary storage plates; and a vibration mechanism for providing high-frequency, low-amplitude vibration in the vertical direction for the device.

[0029] After salt is fed into the main pipeline through the inlet at the top, it flows downwards under gravity. Simultaneously, the vibration mechanism activates, providing high-frequency, low-amplitude vertical vibration for the entire device, preventing salt accumulation or blockage within the pipeline. When the salt flows to the point where it connects with the secondary pipeline in the middle of the main pipeline, the switching plate inserts or retracts into the main pipeline according to a control signal. If the switching plate is inserted, the temporary storage plate at the secondary outlet closes, and the temporary storage plate at the main outlet opens, allowing salt to fall from the main outlet. The switching plate prevents the salt from falling directly, guiding it through the secondary pipeline to the secondary outlet and accumulating on the temporary storage plate at the secondary outlet. If the switching plate is retracted, the temporary storage plate at the main outlet closes, and the temporary storage plate at the secondary outlet opens, allowing salt to fall from the secondary outlet and flow downwards along the main pipeline to the main outlet, accumulating on the main temporary storage plate. A salt level sensor monitors the amount of salt accumulated above each temporary storage plate in real time. When any sensor detects that the salt level has reached a preset value, the drive mechanism is triggered, which drives the insertion or retraction of the switching plate to adjust the salt flow channel and drives the two temporary storage plates to change their open or closed state, ensuring that the amount of salt discharged from the main outlet and the auxiliary outlet remains average. The entire process is repeated cyclically, thereby achieving uniform salt distribution.

[0030] Example 2: This embodiment is a further improvement based on Embodiment 1.

[0031] like Figure 2 , 3As shown, in this embodiment, a rotating shaft is provided on the temporary storage plate. The rotating shaft is located at one end of the temporary storage plate that is rotatably connected to the main discharge port or the auxiliary discharge port. The linkage mechanism includes: a main pulley, which is located on the rotating shaft of the temporary storage plate at the main discharge port; an auxiliary pulley, which is located on the rotating shaft of the temporary storage plate at the auxiliary discharge port; and a transmission belt, which connects the main pulley and the auxiliary pulley. When the temporary storage plate at the main discharge port is open, the temporary storage plate at the auxiliary discharge port is closed; when the temporary storage plate at the main discharge port is closed, the temporary storage plate at the auxiliary discharge port is open.

[0032] Both the main and auxiliary discharge ports are equipped with openable and closable temporary storage plates. Each temporary storage plate is rotatably connected to the discharge port via a rotating shaft at its end. The linkage mechanism consists of a main pulley, an auxiliary pulley, and a transmission belt. The main pulley is fixedly mounted on the rotating shaft of the temporary storage plate at the main discharge port, while the auxiliary pulley is fixedly mounted on the rotating shaft of the temporary storage plate at the auxiliary discharge port. The transmission belt tightly wraps around the main and auxiliary pulleys, connecting them. When the drive mechanism is activated, it directly drives the temporary storage plate at the main discharge port to rotate and open around its rotating shaft. This action simultaneously drives the main pulley to rotate. The main pulley transmits power to the auxiliary pulley through transmission, forcing the auxiliary pulley to rotate accordingly, thereby driving the temporary storage plate at the auxiliary discharge port to move and close. Conversely, when the temporary storage plate at the main discharge port is closed, the same transmission chain forces the temporary storage plate at the auxiliary discharge port to open synchronously, thus achieving a linkage effect where the two temporary storage plates are always in an alternating opening and closing state.

[0033] Example 3: This embodiment is a further improvement based on any of the above embodiments.

[0034] like Figure 2 As shown, in this embodiment, the driving mechanism includes: a rack disposed on the bottom surface of the switching plate, with its length direction parallel to the length direction of the switching plate; a first gear meshing with the rack; a gear shaft rotatably disposed on the outer wall of the main pipe, one end of which is connected to the first gear; a second gear disposed on the end of the gear shaft away from the first gear, rotating synchronously with the first gear; a third gear meshing with the second gear; a motor disposed on the outer wall of the main pipe, electrically connected to a salt level sensor, the salt level sensor being a pressure sensor, the motor's drive shaft being coaxially connected to the third gear; and a fourth gear disposed on the rotating shaft of the temporary storage plate at the main discharge port, meshing with the third gear.

[0035] The drive mechanism is powered by a motor. When the salt level sensor, i.e., the pressure sensor, detects that the salt accumulation weight on the temporary storage plate has reached a preset value and sends a signal, the motor starts. The motor's drive shaft directly drives the third gear to rotate, and the second gear meshing with the third gear rotates in the opposite direction. The second gear and the first gear are fixed on the same gear shaft, so the first gear also rotates synchronously. The rotation of the first gear drives the rack meshing with it to move linearly, thereby driving the switching plate fixed with the rack to insert into or retract from the main pipe to switch the salt flow channel. At the same time, the third gear, driven by the motor, also directly drives the fourth gear meshing with it to rotate. The fourth gear is installed on the rotating shaft of the temporary storage plate at the main outlet. Its rotation directly drives the temporary storage plate to perform opening or closing actions, and then through the linkage mechanism, causes the temporary storage plate at the auxiliary outlet to perform the opposite action, ultimately realizing the synchronous linkage between the movement of the switching plate and the opening and closing of the two temporary storage plates.

[0036] Example 4: This embodiment is a further improvement based on any of the above embodiments.

[0037] like Figure 2 As shown, in this embodiment, the downward angle between the secondary pipe and the main pipe is an acute angle. A baffle is provided in the main pipe above the connection between the secondary pipe and the main pipe to prevent salt from falling directly into the secondary pipe. The upper surface of the baffle is provided with a slope to prevent salt from accumulating on it.

[0038] The secondary pipe is connected to the middle of the main pipe at one end and is inclined downwards, forming an acute angle with the main pipe. This structure ensures that salt, after entering the secondary pipe, can smoothly slide down to the secondary outlet due to gravity and the inclination angle. Inside the main pipe, precisely above the connection point of the secondary pipe, a baffle is fixedly installed. Its main function is to prevent salt falling from the main pipe from directly entering the secondary pipe. Thus, when the switching plate retracts and the main pipe is unobstructed, the salt flows down the main pipe to the main outlet and replenishes the secondary pipe. To effectively prevent salt from accumulating on the surface of the baffle, the upper surface of the baffle has a ramp structure. This ramp prevents salt that fails to cross the baffle from remaining on its surface and, with the assistance of gravity and the high-frequency, low-amplitude vibration of the entire device, slides back along the ramp to the main flow path of the main pipe.

[0039] Example 5: This embodiment is a further improvement based on any of the above embodiments.

[0040] like Figure 4As shown, in this embodiment, the vibration mechanism includes: a vibration cylinder, fixed to the outer wall of the main pipe, having a receiving cavity inside, and an exhaust hole on its side wall; a vibration block, disposed inside the vibration cylinder, with its cross-section tightly fitted to the inner wall of the vibration cylinder; and a cylinder, connected to the bottom surface of the receiving cavity through a pipe, continuously outputting compressed air into the receiving cavity; wherein, the distance between the exhaust hole and the top surface of the receiving cavity is greater than the height of the vibration block.

[0041] When the pneumatic vibration device is working, a cylinder fixed to the outer wall of the hopper continuously inputs compressed air into the receiving cavity at the bottom of the vibration cylinder through a pipe. Since the cross-section of the vibrating block is in close contact with the cross-section of the receiving cavity, a sealed space is formed at the bottom of the receiving cavity. When compressed air is continuously input into this space, the air pressure pushes the vibrating block upward. When the vibrating block rises above the exhaust port on the side wall, the compressed air in the cavity is quickly discharged from the exhaust port, causing a sudden drop in air pressure in the cavity. Under the action of inertia, the vibrating block hits the upper wall of the receiving cavity and falls back under the action of gravity. After it falls and hits the bottom of the receiving cavity and blocks the exhaust port, the compressed air input by the cylinder accumulates again in the sealed space, pushing the vibrating block to rise again, thus forming a cycle. Since the distance from the exhaust port to the top surface of the receiving cavity is always greater than the height of the vibrating block, it ensures that the vibrating block has enough acceleration space for each upward stroke, thereby generating continuous high-frequency low-amplitude mechanical vibration and transmitting it to the entire device.

[0042] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A material distribution device, characterized in that, include: The main pipeline has a feed inlet at the upper end and a main discharge outlet at the lower end. A secondary pipe is located at one end in the middle of the main pipe and communicates with the main pipe, and has a secondary discharge port at the other end; A switching plate is inserted into the main pipe, corresponding to the point where the main pipe and the secondary pipe communicate, and is parallel to the bottom surface of the point where the secondary pipe and the main pipe communicate. It is inserted into the main pipe or retracted to switch the channel through which the salt falls. There are two temporary storage plates, which are rotatably mounted on the main discharge port and the auxiliary discharge port respectively, covering the main discharge port and the auxiliary discharge port; A drive mechanism drives the opening and closing of the temporary storage plate and the insertion and retraction of the switching plate; A linkage mechanism is used to link the two temporary storage plates together. There are two salt level sensors, each mounted on one of the two temporary storage plates, used to monitor the amount of salt accumulated above the temporary storage plates; And a vibration mechanism to provide the device with high-frequency, low-amplitude vibration in the vertical direction.

2. The equalizing distribution device according to claim 1, characterized in that, The downward angle between the secondary pipe and the main pipe is an acute angle.

3. The equalizing distribution device according to claim 1, characterized in that, The temporary storage plate is provided with a rotating shaft, which is located at one end of the temporary storage plate that is rotatably connected to the main discharge port or the auxiliary discharge port.

4. The equalizing distribution device according to claim 3, characterized in that, The linkage mechanism includes: The main pulley is located on the rotating shaft of the temporary storage plate at the main discharge port; A secondary pulley is disposed on the rotating shaft of the temporary storage plate at the secondary discharge port; A drive belt connects the main pulley and the auxiliary pulley; Specifically, when the temporary storage plate at the main discharge port is opened, the temporary storage plate at the auxiliary discharge port is closed; when the temporary storage plate at the main discharge port is closed, the temporary storage plate at the auxiliary discharge port is opened.

5. The equalizing distribution device according to claim 3, characterized in that, The drive mechanism includes: A rack is disposed on the bottom surface of the switching plate, and its length direction is parallel to the length direction of the switching plate; The first gear meshes with the rack; A gear shaft is rotatably mounted on the outer wall of the main pipe, with one end connected to the first gear; The second gear is located at the end of the gear shaft away from the first gear and rotates synchronously with the first gear. The third gear meshes with the second gear; The motor is mounted on the outer wall of the main pipeline and is electrically connected to the salt level sensor. Its drive shaft is coaxially connected to the third gear. The fourth gear is located on the rotating shaft of the temporary storage plate at the main discharge port and meshes with the third gear.

6. The equalizing distribution device according to claim 1, characterized in that, A baffle is installed inside the main pipe above the connection between the secondary pipe and the main pipe to prevent salt from falling directly into the secondary pipe. The upper surface of the baffle is provided with a slope to prevent salt from accumulating on it.

7. The equalizing distribution device according to claim 1, characterized in that, The vibration mechanism includes: A vibration cylinder is fixed to the outer wall of the main pipe, and has a receiving cavity inside and an exhaust hole on its side wall. A vibrating block is disposed inside the vibrating cylinder, and its cross-section is in close contact with the inner wall of the vibrating cylinder. The cylinder is connected to the bottom surface of the receiving cavity through a pipe and continuously outputs compressed air into the receiving cavity; The distance between the exhaust port and the top surface of the receiving cavity is greater than the height of the vibrating block.

8. The equalizing distribution device according to claim 1, characterized in that, The salt content sensor is a pressure sensor.

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