Edible salt screening equipment

Abstract

The edible salt screening equipment comprises a screening box, a screening device and a feeding and cleaning device, the upper surface of the screening box is open, and a discharging opening is formed in the bottom of the screening box; the screening device comprises a screening disc and a driving assembly, the screening disc is located in the screening box, and the driving assembly is connected with the screening disc to drive the screening disc to rotate; the feeding and cleaning device comprises a feeding assembly, a cleaning assembly and a linkage assembly, the feeding assembly comprises a flexible feeding pipe, the feeding pipe supplies materials into the sieve tray through gravity, the cleaning assembly comprises a flexible cleaning pipe, the cleaning pipe is used for sucking out large-size edible salt particles in the sieve tray, and the linkage assembly is connected with the feeding pipe and the cleaning pipe. Compared with the prior art, according to the edible salt screening equipment, the linkage assembly is used for driving the feeding pipe and the cleaning pipe to be switched between the feeding state and the cleaning state, large-size edible salt particles on the screening disc are cleaned under the condition that the feeding assembly and the screening assembly are not shut down, and the fault occurrence rate of the equipment is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of edible salt production equipment technology, specifically to an edible salt screening device. Background Technology

[0002] In the salt production process, finished salt falls from the hopper onto a screen on a conveyor belt. Qualified small-sized salt particles are then conveyed, while unqualified large-sized salt particles are trapped on the screen. Every so often, the screening process must be paused to clean the large-sized salt particles from the screen, resulting in poor production continuity. Frequent starting and stopping of the feeding equipment and screening processes increases the equipment failure rate. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an edible salt screening device that solves the technical problem in the prior art that the device needs to be frequently started and stopped in order to clean the salt particles on the screen, which leads to an increased equipment failure rate.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides an edible salt sieving device, including a sieving box, a sieving device, and a feeding and cleaning device. The upper surface of the screening box is open, and the bottom has a discharge port; The screening device includes a screen plate and a drive assembly. The screen plate is located inside the screening box, and the drive assembly is connected to the screen plate to drive the screen plate to rotate. The feeding and cleaning device includes a feeding component, a cleaning component, and a linkage component. The feeding component includes a flexible feeding tube that feeds material into the sieve disc using gravity. The cleaning component includes a flexible cleaning tube that sucks out large-sized edible salt particles from the sieve disc. The linkage component connects the feeding tube and the cleaning tube. The feeding and cleaning device has a feeding state in which the feeding pipe faces the screen and the cleaning pipe is located above the screen, and a cleaning state in which the feeding pipe faces upward and the cleaning pipe extends into the screen. The linkage component is used to drive the feeding pipe and the cleaning pipe to switch between the feeding state and the cleaning state.

[0005] In some embodiments, the drive assembly includes a drive motor and a transmission mechanism, wherein the drive motor is connected to the screen disk via the transmission mechanism to drive the screen disk to reciprocate.

[0006] In some embodiments, the transmission mechanism includes a transmission shaft, a first bevel gear, and two second bevel gears. The transmission shaft is connected to the sieve disc, and the two second bevel gears are disposed opposite to each other on the transmission shaft. The drive motor is connected to the first bevel gear, which is located between the two second bevel gears. The first bevel gear has teeth on only a portion of its conical surface so that the first bevel gear meshes with only one of the second bevel gears.

[0007] In some embodiments, a conical boss is formed on the bottom surface of the screening chamber of the screening box, and the upper end of the drive shaft passes through the conical boss and is connected to the screen plate. A baffle is provided on the drive shaft and / or the conical boss to prevent edible salt from entering between the drive shaft and the conical boss.

[0008] In some embodiments, a first baffle is vertically disposed on the conical protrusion surrounding the drive shaft, and a second baffle is disposed on the drive shaft, with a gap between the first baffle and the second baffle to avoid contact.

[0009] In some embodiments, the linkage component includes a fixed pulley, a traction cable, and a driver. The fixed pulley is disposed above the screen plate. The traction cable passes around the fixed pulley and is connected at both ends to the feed pipe and the cleaning pipe, respectively. The driver drives the feed pipe and the cleaning pipe to switch between a feeding state and a cleaning state.

[0010] In some embodiments, the fixed pulley is a ratchet, and the traction cable is a chain that is connected to and cooperates with the ratchet.

[0011] In some embodiments, the driver is connected to the ratchet to drive the ratchet to rotate.

[0012] In some embodiments, the cleaning assembly further includes a suction device and a collector, the suction device being connected to the cleaning tube and the collector to draw the large-sized salt particles into the collector, the suction device operating synchronously with the actuator.

[0013] In some embodiments, the bottom surface of the screening chamber of the screening box is an inclined plane, and the discharge port is located at the lowest point of the inclined plane.

[0014] Compared with the prior art, the edible salt screening equipment provided by the present invention uses a linkage component to drive the feeding pipe and the cleaning pipe to switch between feeding and cleaning states. By adjusting the orientation of the feeding pipe to temporarily stop feeding, large-sized edible salt particles on the screen plate can be cleaned without stopping the feeding component and the screening component, which effectively reduces the failure rate of the equipment. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of the edible salt screening equipment provided in the embodiment of the present invention when it is in the feeding state; Figure 2 This is a schematic diagram of the edible salt screening equipment provided in the embodiment of the present invention when it is in the cleaning state. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0017] To address the technical problem of frequent equipment start-ups and shutdowns required to clean salt particles from the screen, which leads to a higher equipment failure rate, this invention provides an edible salt screening device that enables cleaning without stopping the machine, effectively reducing the equipment failure rate.

[0018] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the edible salt screening equipment provided in the embodiment of the present invention when it is in the feeding state; Figure 2 This is a schematic diagram of the edible salt screening equipment provided in this embodiment of the invention when it is in the cleaning state. The edible salt screening equipment includes a screening box 1, a screening device 2, and a feeding and cleaning device 3.

[0019] The upper surface of the screening box 1 is open, and its bottom has a discharge port 11. The screening box 1 is a container for screening. The salt powder that has been screened falls to the bottom of the screening box 1 and is discharged from the discharge port 11 to enter the next processing step.

[0020] The screening device 2 includes a screen plate 21 and a drive assembly. The screen plate 21 is located inside the screening box 1, and the drive assembly is connected to the screen plate 21 to drive the screen plate 21 to rotate.

[0021] The feeding and cleaning device 3 includes a feeding assembly, a cleaning assembly, and a linkage assembly 33. The feeding assembly includes a flexible feeding pipe 31, which feeds material into the sieve disc 21 using gravity. The cleaning assembly includes a flexible cleaning pipe 32, which is used to remove large-sized edible salt particles from the sieve disc 21. The linkage assembly 33 connects the feeding pipe 31 and the cleaning pipe 32.

[0022] The feeding and cleaning device 3 has a feeding state where the feeding pipe 31 faces the screen plate 21 and the cleaning pipe 32 is located above the screen plate 21. In this state, under the influence of gravity, the feeding pipe 31 delivers edible salt into the screen plate 21, while the cleaning pipe 32, located above the screen plate 21, is not in operation. The feeding and cleaning device 3 also has a cleaning state where the feeding pipe 31 faces upwards and the cleaning pipe 32 extends into the screen plate 21. In this state, the outlet of the feeding pipe 31 faces upwards, feeding is temporarily stopped, and large-sized edible salt particles are sucked out of the cleaning pipe 32. The linkage component 33 is used to switch the feeding pipe 31 and the cleaning pipe 32 between the feeding and cleaning states. By adjusting the orientation of the feeding pipe 31 to temporarily stop feeding, large-sized edible salt particles on the screen plate 21 can be cleaned without stopping the feeding and screening components, effectively reducing the equipment failure rate.

[0023] In some embodiments, the bottom surface of the screening chamber of the screening box 1 is an inclined surface, and the discharge port 11 is located at the lowest point of the inclined surface, so as to facilitate the smooth discharge of the screened edible salt powder.

[0024] In some embodiments, the drive assembly includes a drive motor 22 and a transmission mechanism 23. The drive motor 22 is connected to the sieve disc 21 via the transmission mechanism 23 to drive the sieve disc 21 to reciprocate. The sieve disc 21 reciprocates rather than moves in one direction, which can better sieve edible salt and improve sieve efficiency.

[0025] Based on the above embodiment, the transmission mechanism 23 includes a transmission shaft 231, a first bevel gear 232, and two second bevel gears 233. The transmission shaft 231 is connected to the screen disc 21, and the two second bevel gears 233 are arranged opposite to each other on the transmission shaft 231. The drive motor 22 is connected to the first bevel gear 232, which is located between the two second bevel gears 233. The first bevel gear 232 has teeth only on a portion of its conical surface, so that the first bevel gear 232 can only mesh with at most one of the second bevel gears 233 at any given time. Thus, when the first bevel gear 232 meshes with different second bevel gears 233, the transmission direction of the transmission mechanism 23 is opposite. Preferably, between the engagement of the first bevel gear 232 with each of the two second bevel gears 233, there is a period of separation where the first bevel gear 232 is not engaged with either of the two second bevel gears 233, allowing the screen disc 21 to lose the drive of the drive motor 22 and slowly decelerate under the action of frictional resistance. When the speed decreases to near 0, it engages with another second bevel gear 233 to reduce the impact when the first bevel gear 232 engages with the second bevel gear 233.

[0026] In this embodiment, the bottom of the screening box 1 forms a device cavity for housing the drive motor 22 and the transmission mechanism 23. The transmission shaft 231 passes upward through the bottom of the screening cavity and connects to the screen plate 21.

[0027] In some embodiments, a conical boss 12 is formed on the lower bottom surface of the screening chamber of the screening box 1, and the upper end of the drive shaft 231 passes through the conical boss 12 and is connected to the screen plate 21. The conical boss 12 is used to raise the connection between the drive shaft 231 and the lower bottom surface of the screening chamber of the screening box 1, reducing the probability of salt powder falling into the connection.

[0028] Based on the above embodiments, baffles are provided on the drive shaft 231 and / or the conical boss 12 to prevent edible salt from entering between the drive shaft 231 and the conical boss 12. A gap exists between the drive shaft 231 and the conical boss 12, or a bearing is provided, to reduce the rotational friction of the drive shaft 231.

[0029] Based on the above embodiment, a first baffle 41 is vertically arranged on the conical boss 12, surrounding the drive shaft 231, and a second baffle 42 is arranged on the drive shaft 231. A gap exists between the first baffle 41 and the second baffle 42 to avoid contact. The gap is as small as possible to reduce the probability of salt powder passing through the gap.

[0030] In some embodiments, the feeding assembly includes a feeding box and a feeding pipe 31. The feeding box stores edible salt to be screened, and the feeding pipe 31 connects to the feeding box. The feeding box is positioned at a suitable height so that when the feeding pipe 31 is in the feeding state, gravity can be used to slide the edible salt along the feeding pipe 31 towards the sieve plate 12. When the feeding pipe 31 is in the cleaning state, the outlet of the feeding pipe 31 is at a sufficiently high height to pause feeding.

[0031] The cleaning assembly also includes a suction device and a collector. The suction device is connected to the cleaning tube 32 and the collector to draw large-sized salt particles into the collector for further centralized processing.

[0032] In some embodiments, the linkage component 33 includes a fixed pulley 331, a traction cable 332, and a driver. The fixed pulley 331 is disposed above the screen plate 21, the traction cable 332 passes around the fixed pulley 331 and its two ends are respectively connected to the feed pipe 31 and the cleaning pipe 32, and the driver drives the feed pipe 31 and the cleaning pipe 32 to switch between the feeding state and the cleaning state.

[0033] The weight of the feed pipe 31 should preferably be greater than that of the cleaning pipe 32, so that it remains in the feeding state when the driver is not working. When the screen plate 21 needs to be cleaned, the driver will switch the feeding state to the cleaning state.

[0034] Based on the above embodiments, the driver uses a suitable type of motor, which is connected to the fixed pulley 331 to drive the fixed pulley 331 to rotate. In other embodiments, the driver may also use a cylinder, electric push rod, or other device to connect to the cleaning pipe 32 to drive the cleaning pipe 32 to move downward.

[0035] In a preferred embodiment, to prevent slippage between the fixed pulley 331 and the traction cable 332, the fixed pulley 331 is a ratchet, and the traction cable 332 is a chain that is connected to the ratchet, thereby achieving stable connection and transmission.

[0036] Furthermore, the suction device and the driver should ideally operate synchronously. That is, during the feeding state, neither the suction device nor the driver works; when switching to the cleaning state, the driver starts and the suction device starts simultaneously. Synchronous operation can be achieved by controlling the connection or disconnection of the two working circuits through a switch in the circuit design.

[0037] The timing of switching between the feeding and cleaning states can be controlled by visual inspection and manual switching, or by using video recognition for automatic switching, or by setting a timer to automatically switch at fixed time intervals.

[0038] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A salt screening device, characterized in that, include: The screening box has an open upper surface and a discharge port at the bottom; A screening device includes a screen plate and a drive assembly, wherein the screen plate is located inside a screening box and the drive assembly is connected to the screen plate to drive the screen plate to rotate. A feeding and cleaning device includes a feeding component, a cleaning component, and a linkage component. The feeding component includes a flexible feeding tube that feeds material into the sieve tray using gravity. The cleaning component includes a flexible cleaning tube that sucks out large-sized edible salt particles from the sieve tray. The linkage component connects the feeding tube and the cleaning tube. The feeding and cleaning device has a feeding state in which the feeding pipe faces the screen and the cleaning pipe is located above the screen, and a cleaning state in which the feeding pipe faces upward and the cleaning pipe extends into the screen. The linkage component is used to drive the feeding pipe and the cleaning pipe to switch between the feeding state and the cleaning state.

2. The edible salt screening equipment according to claim 1, characterized in that, The drive assembly includes a drive motor and a transmission mechanism. The drive motor is connected to the screen plate via the transmission mechanism to drive the screen plate to reciprocate.

3. The edible salt screening equipment according to claim 2, characterized in that, The transmission mechanism includes a transmission shaft, a first bevel gear, and two second bevel gears. The transmission shaft is connected to the sieve disc. The two second bevel gears are arranged opposite to each other on the transmission shaft. The drive motor is connected to the first bevel gear. The first bevel gear is located between the two second bevel gears. The first bevel gear has teeth on only part of its conical surface so that the first bevel gear meshes with only one of the second bevel gears.

4. The edible salt screening equipment according to claim 3, characterized in that, The bottom surface of the sieving chamber of the sieving box forms a conical protrusion. The upper end of the drive shaft passes through the conical protrusion and is connected to the sieve plate. A baffle is provided on the drive shaft and / or the conical protrusion to prevent edible salt from entering between the drive shaft and the conical protrusion.

5. The edible salt screening equipment according to claim 4, characterized in that, A first baffle is vertically arranged on the conical protrusion, surrounding the drive shaft, and a second baffle is arranged on the drive shaft. There is a gap between the first baffle and the second baffle to avoid contact.

6. The edible salt screening equipment according to claim 1, characterized in that, The linkage component includes a fixed pulley, a traction cable, and a driver. The fixed pulley is positioned above the screen plate. The traction cable passes around the fixed pulley and is connected at both ends to the feed pipe and the cleaning pipe, respectively. The driver drives the feed pipe and the cleaning pipe to switch between the feed state and the cleaning state.

7. The edible salt screening equipment according to claim 6, characterized in that, The fixed pulley is a ratchet, and the traction cable is a chain that is connected to the ratchet.

8. The edible salt screening equipment according to claim 7, characterized in that, The driver is connected to the ratchet to drive the ratchet to rotate.

9. The edible salt screening equipment according to claim 6, characterized in that, The cleaning assembly also includes a suction device and a collector. The suction device is connected to the cleaning tube and the collector to draw the large-sized salt particles into the collector. The suction device operates synchronously with the driver.

10. The edible salt screening equipment according to claim 1, characterized in that, The bottom surface of the screening chamber of the screening box is an inclined plane, and the discharge port is located at the lowest point of the inclined plane.

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