Salt screening device

Abstract

The invention discloses a salt screening device which comprises a rack, a screening box, a vibration assembly and a screen mesh assembly. The screening box is elastically and telescopically installed on the rack through an elastic piece, the screening box is provided with a screening channel extending in the length direction of the screening box, and one end of the screening box is further provided with a feeding port communicating with the screening channel; the vibration assembly is arranged at the bottom of the screening box. The screen assembly is arranged in the screening channel so as to divide the screening channel into a first channel and a second channel, the screen assembly is provided with a plurality of screen holes distributed in an array mode, the screen holes are communicated with the first channel and the second channel, and the size of the screen holes can be adjusted. The screening holes can be adjusted according to requirements, fine salt with different particle sizes can be obtained, the application range is widened, and the production requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of salt production equipment, and in particular to a salt screening device. Background Art

[0002] Salt is one of the important substances we rely on for survival. It is crucial in our daily cooking and medical health. It is widely used in medical treatment, beauty, sterilization, tooth protection, decontamination and other aspects. After dissolution, precipitation, filtration, evaporation and other steps, table salt can be made into refined salt. However, after the above steps, the particle size of the salt is different, so it needs to be screened to obtain the required fine salt and dissolve the coarse salt back.

[0003] Patent CN219334935U discloses a vibrating screen for screening salt, comprising a body; a vibrating screen, which is arranged on the top of the body; a vibration assembly, used to drive the vibrating screen to vibrate; a shell, fixedly mounted on the inner bottom of the body and located at the end of the vibrating screen; a crushing assembly, which is mounted inside the shell; a discharge plate, which is rotatably mounted on the side wall of the shell and is connected to the discharge port of the body, and a pull rope is fixedly connected between the discharge plate and the vibrating screen; and a driving assembly, which is used to drive the vibration assembly and the crushing assembly to operate.

[0004] However, with the development of society, people have higher and higher requirements on the particles of table salt. The above-mentioned existing technology cannot screen fine salt of different particle sizes and cannot meet the production needs. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a salt screening device to solve the technical problem that the prior art cannot screen fine salt of different particle sizes and cannot meet production needs.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a salt screening device, comprising: frame; A screening box, wherein the screening box is elastically and telescopically mounted on the frame through an elastic member, the screening box is provided with a screening channel extending along its length direction, and one end of the screening box is also provided with a feed port communicating with the screening channel; a vibration assembly, disposed at the bottom of the screening box; and A screen assembly is arranged in the screening channel to separate the screening channel into a first channel and a second channel. The screen assembly is provided with a plurality of screen holes arranged in an array, and the screen holes connect the first channel and the second channel, wherein the size of the screen holes can be adjusted.

[0007] In some embodiments, the screen assembly includes a first screen, a second screen and a first drive assembly, the first screen and the second screen are stacked, wherein the second screen is movably arranged along the length direction of the screening box so that the sieve holes of the first screen and the second screen correspond or staggered, and the first drive assembly is connected to the second screen to drive the second screen to move.

[0008] In some embodiments, a threaded hole is provided in the middle of one end of the second screen; The first driving assembly includes a first screw rod and a first motor. The first screw rod is rotatably installed in the second channel along the axis in the length direction of the screening box. The first screw rod is threadably matched with the second screen mesh. The main shaft of the first motor is connected to one end of the first screw rod.

[0009] In some embodiments, the salt screening device further includes a cleaning component, which is disposed in the second channel and is used to clean salt particles in the sieve holes.

[0010] In some embodiments, the cleaning assembly includes a mounting roller, a plurality of ejectors and a second driving assembly, the two ends of the mounting roller sliding along the length direction of the screening box and rotatably installed along its own axis on the opposite side walls of the second channel, a plurality of ejector arrays are arranged on the circumference of the mounting roller, and each of the ejectors is elastically telescopically arranged along the radial direction of the mounting roller, so that when the mounting roller moves, at least part of the ejectors can extend into the sieve hole to eject the salt particles in the sieve hole, and the second driving assembly is connected to one end of the mounting roller to drive the mounting roller to move.

[0011] In some embodiments, two opposite side walls of the second channel are provided with slide grooves, the slide grooves extend along the length direction of the screening box, the ends of the mounting rollers are adapted to the slide grooves, and the mounting rollers are slidably and rotatably mounted in the slide grooves.

[0012] In some embodiments, the second drive assembly includes a nut, a second screw rod and a second motor, the nut is rotatably connected to one end of the mounting roller, the second screw rod is rotatably mounted on the side wall of the screening box, the second screw rod is threadedly matched with the nut, and the main shaft of the second motor is connected to one end of the second screw rod.

[0013] In some embodiments, the cleaning assembly further comprises a synchronization assembly, which is disposed at the bottom of the screening box and which simultaneously connects two opposite ends of the mounting roller so that the two ends of the mounting roller move synchronously.

[0014] In some embodiments, the synchronization component includes two pulley blocks, a wire rope and two connecting parts. The two pulley blocks are installed at the bottom of the screening box at intervals along the width direction of the screening box. The wire rope is wound around the two pulley blocks in a ring shape. The two connecting parts are respectively rotatably installed at both ends of the mounting roller, and the two connecting parts are respectively connected to two opposite sections of the wire rope.

[0015] In some embodiments, the pulley block includes a first pulley and two second pulleys, the first pulley and the second pulleys are arranged at intervals along the length direction of the screening box, the two second pulleys are arranged at intervals along the vertical direction, and the wire rope is sequentially wound around the first pulley and the second pulley.

[0016] Compared with the prior art, the salt screening device provided by the present invention has the following characteristics: the screening box is installed on the frame through an elastic member, so that the screening box can move elastically relative to the frame; the vibration component is arranged at the bottom of the screening box to provide a vibration source; the screen component can separate the screening channel into a first channel and a second channel arranged in sequence from top to bottom, and the size of the screen hole is adjustable. During specific use, the size of the screen hole can be adjusted as needed, and then the salt is transported from the feed port to the first channel, and the screening box is vibrated by the vibration component. During the vibration process, the salt will move in the first channel, and the salt that meets the requirements will enter the second channel through the screen hole, so that the screening of the salt can be achieved. The present application can adjust the screen hole according to the needs to obtain fine salt of different particle sizes, thereby expanding the scope of application and meeting the production needs.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail as follows with reference to the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a salt screening device provided by the present invention; Figure 2 yes Figure 1 The front view of the medium salt screening device; Figure 3 yes Figure 1 A top view of the middle screening box; Figure 4 yes Figure 1 A front cross-sectional view of the middle screening box; Figure 5 yes Figure 4 A partial enlarged schematic diagram of part A; Figure 6 yes Figure 1A three-dimensional schematic diagram of the cleaning component; Figure 7 yes Figure 1 Partial cross-sectional view of the mounting roller.

[0019] Description of reference numerals: 1-frame, 2-screening box, 21-feed port, 22-first channel, 23-second channel, 24-chute, 25-mounting slot, 3-vibration assembly, 4-screen assembly, 41-first screen, 42-second screen, 43-first drive assembly, 431-first screw rod, 432-first motor, 5-cleaning assembly, 51-mounting roller, 52-thimble, 53-second drive assembly, 531-second screw rod, 532-second motor, 54-synchronizing assembly, 541-pulley block, 5411-first pulley, 5412-second pulley, 542-wire rope, 543-connecting piece. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In order to solve the technical problem that the prior art cannot screen fine salt of different particle sizes and cannot meet production needs, the present invention provides a salt screening device that can adjust the sieve holes according to needs to obtain fine salt of different particle sizes, thereby expanding the scope of application and meeting production needs.

[0022] See also Figure 1 , Figure 1 Schematic diagram of the structure of a salt screening device in one embodiment of the present invention.

[0023] The present invention provides a salt screening device, comprising a frame 1, a screening box 2, a vibration assembly and a screen assembly 4; the screening box 2 is elastically and telescopically installed on the frame 1 through an elastic member, the screening box 2 is provided with a screening channel extending along its length direction, and one end of the screening box 2 is also provided with a feed port 21 connected to the screening channel; the vibration assembly 3 is arranged at the bottom of the screening box 2; the screen assembly 4 is arranged in the screening channel to separate the screening channel into a first channel 22 and a second channel 23, the screen assembly 4 is provided with a plurality of sieve holes arranged in an array, the sieve holes connect the first channel 22 and the second channel 23, wherein the size of the sieve holes can be adjusted.

[0024] In this example, see Figures 1 to 3The screening box 2 is installed on the frame 1 through an elastic member, so that the screening box 2 can move elastically relative to the frame 1, and the vibration component 3 is arranged at the bottom of the screening box 2 to provide a vibration source. The screen component 4 can separate the screening channel into a first channel 22 and a second channel 23 arranged in sequence from top to bottom, and the size of the sieve hole is adjustable. During specific use, the size of the sieve hole can be adjusted as needed, and then the salt is transported from the feed port 21 to the first channel 22, and the screening box 2 is vibrated by the vibration component 3. During the vibration process, the salt will move in the first channel 22, and the salt that meets the requirements will pass through the sieve hole into the second channel 23, so that the screening of the salt can be achieved. The present application can adjust the sieve hole according to the needs to obtain fine salt of different particle sizes, thereby expanding the scope of application and meeting the production needs.

[0025] In this embodiment, both the first channel 22 and the second channel 23 are arranged to be inclined downward along the salt conveying direction.

[0026] The shape of the sieve hole is not limited, and can be a circular hole, a square hole, or a regular polygonal hole. For ease of description, the following description takes the sieve hole as a square hole as an example.

[0027] In one embodiment, see Figures 3 to 5 The screen assembly 4 includes a first screen 41, a second screen 42 and a first driving assembly 43. The first screen 41 and the second screen 42 are stacked, wherein the second screen 42 is movably arranged along the length direction of the screening box 2 so that the sieve holes of the first screen 41 and the second screen 42 correspond or are staggered, and the first driving assembly 43 is connected to the second screen 42 to drive the second screen 42 to move.

[0028] In this embodiment, a mounting groove 25 is provided in the middle of the two opposite sides of the screening channel, and the thickness of the mounting groove 25 is equal to the sum of the thickness of the first screen 41 and the second screen 42. The first screen 41 and the second screen 42 are adapted to the mounting groove 25, and the first screen 41 and the second screen 42 are stacked in the vertical direction, that is, the first screen 41 is close to the upper side of the second screen 42, the first screen 41 is fixedly installed in the mounting groove 25, and the second screen 42 is slidably installed in the mounting groove 25, and the first screen 41 can be fixedly installed in the mounting groove 25. The second screen 42 can be slidably installed in the mounting groove 25. The first screen 41 and the second screen 42 are limited, and the screen hole sizes and intervals of the first screen 41 and the second screen 42 are consistent. In the initial state, the screen holes of the first screen 41 and the second screen 42 correspond to each other, and the aperture at this time is the largest relative to the screen holes of the entire screen assembly 4. As the second screen 42 moves along the length direction of the screening box 2, the screen holes of the first screen 41 and the second screen 42 will gradually stagger, and the aperture at this time will gradually decrease relative to the screen holes of the entire screen assembly 4, thereby achieving the purpose of adjusting the screen holes.

[0029] In one embodiment, see Figure 5 A threaded hole is provided in the middle of one end of the second screen 42; the first driving assembly 43 includes a first screw rod 431 and a first motor 432, the first screw rod 431 is rotatably installed in the second channel 23 along the axis in the length direction of the screening box 2, the first screw rod 431 is threadedly matched with the second screen 42, and the main shaft of the first motor 432 is connected to one end of the first screw rod 431.

[0030] In this embodiment, the first motor 432 is installed in the second channel 23, the first screw rod 431 is installed on the main shaft of the first motor 432, and a connecting portion is convexly provided at the bottom of the second screen 42. A threaded hole is penetrated through the connecting portion, and the first screw rod 431 is threadedly matched with the second screen 42, so that the second screen 42 is driven to move along the length direction of the screening box 2 by the rotation of the first motor 432, and the first motor 432 can also drive the first screw rod 431 to frequently rotate forward and reverse, so that the second screen 42 performs a small range of reciprocating motion. Such a setting can shear the salt particles stuck in the sieve holes, achieve the crushing of the salt particles, and thus prevent the salt particles from being stuck in the sieve holes.

[0031] In one embodiment, see Figure 6 The salt screening device further comprises a cleaning component 5, which is disposed in the second channel 23 and is used for cleaning salt particles in the sieve holes.

[0032] In this embodiment, during the screening process, when the particle size of the salt particles is larger than the sieve hole, the salt particles cannot pass through the sieve hole and are directly discharged from the first channel 22. When the particle size of the salt particles is smaller than the sieve hole, the salt particles pass through the sieve hole into the second channel 23 and are discharged from the second channel 23. When the particle size of the salt particles is comparable to the sieve hole, the salt particles will be stuck in the sieve hole, thereby causing the sieve hole to be blocked and affecting the screening efficiency. Therefore, a cleaning component 5 is also provided in the second channel 23. The cleaning component 5 can clean the salt particles in the sieve hole and make them exit the sieve hole, thereby ensuring smooth screening.

[0033] In one embodiment, see Figure 6 to Figure 7 The cleaning assembly 5 includes a mounting roller 51, a plurality of ejector pins 52 and a second driving assembly 53. Both ends of the mounting roller 51 slide along the length direction of the screening box 2 and are rotatably mounted on the opposite side walls of the second channel 23 along its own axis. A plurality of ejector pins 52 are arranged in an array on the circumference of the mounting roller 51, and each of the ejector pins 52 is elastically telescopically arranged along the radial direction of the mounting roller 51, so that when the mounting roller 51 moves, at least part of the ejector pins 52 can extend into the sieve hole to eject the salt particles in the sieve hole. The second driving assembly 53 is connected to one end of the mounting roller 51 to drive the mounting roller 51 to move.

[0034] In this embodiment, the mounting roller 51 can slide along the length direction of the screening box 2 and rotate around its own axis, and a plurality of ejector pins 52 are arranged in an array on the circumference of the mounting roller 51. The ejector pins 52 are elastically and telescopically mounted on the mounting roller 51, and the mounting roller 51 is close to the second screen 42, so that the ejector pins 52 are against the second screen 42 and are in a compressed state. When the mounting roller 51 moves, some of the ejector pins 52 can correspond to the sieve holes with salt particles stuck in them, and the ejector pins 52 can push the salt particles out of the sieve holes under the action of elastic force, thereby achieving the purpose of cleaning.

[0035] In this embodiment, a plurality of grooves are provided on the circumference of the installation roller 51, and the plurality of grooves are arranged in an array. The grooves extend along the radial direction of the installation roller 51, and the grooves are adapted to the ejector pin 52. One end of the ejector pin 52 is installed in the groove through a spring, so that the ejector pin 52 is elastically retractable.

[0036] In one embodiment, see Figure 2 and Figure 4The opposite side walls of the second channel 23 are provided with slide grooves 24 , and the slide grooves 24 extend along the length direction of the screening box 2 . The end of the mounting roller 51 is adapted to the slide grooves 24 , and the mounting roller 51 is slidably and rotatably installed in the slide grooves 24 .

[0037] In this embodiment, the slide groove 24 is parallel to the installation groove 25, and the installation roller 51 is slidably installed in the slide groove 24. Since part of the ejector pins 52 are pressed against the second screen 42, when the second driving assembly 53 drives the installation roller 51 to slide in the slide groove 24, the installation roller 51 rotates simultaneously under the action of the ejector pins 52 and the second screen 42. Such a setting is conducive to the ejector pins 52 to eject salt particles and prevent the ejector pins 52 from being stuck in the sieve holes.

[0038] In one embodiment, see Figure 6 The second driving assembly 53 includes a nut, a second screw rod 531 and a second motor 532. The nut is rotatably connected to one end of the mounting roller 51. The second screw rod 531 is rotatably mounted on the side wall of the screening box 2. The second screw rod 531 is threadedly matched with the nut. The main shaft of the second motor 532 is connected to one end of the second screw rod 531.

[0039] In this embodiment, the slide groove 24 passes through the side wall of the second channel 23, the mounting roller 51 is flush with the side wall of the second channel 23, the nut is located on the outside of the screening box 2, and the nut is rotatably connected to one end of the mounting roller 51. The second screw rod 531 is rotatably installed on the outside of the screening box 2 along the axis in the length direction of the screening box 2, and the second screw rod 531 is threadedly matched with the nut. By rotating the second screw rod 531, the nut and the mounting roller 51 are driven to slide along the length direction of the screening box 2, and the nut and the mounting roller 51 can rotate relative to each other, thereby realizing that the mounting roller 51 rotates while sliding.

[0040] In one embodiment, see Figure 6 The cleaning assembly 5 further includes a synchronization assembly 54, which is disposed at the bottom of the screening box 2. The synchronization assembly 54 simultaneously connects the two opposite ends of the mounting roller 51 so that the two ends of the mounting roller 51 move synchronously.

[0041] In this embodiment, since the mounting roller 51 is slidably installed in the slide groove 24, the second driving component 53 is connected to one end of the mounting roller 51. When the second driving component 53 drives the mounting roller 51 to move, it is easy to cause the two ends of the mounting roller 51 to move inconsistently and get stuck. Therefore, a synchronization component 54 is also provided on the screening box 2. The synchronization component 54 has two movable parts that move along the length direction of the screening box 2. The two movable parts can move synchronously. The two movable parts are connected to the two ends of the mounting roller 51, so that the two ends of the mounting roller 51 can move consistently through the synchronization component 54, thereby avoiding the installation roller 51 from moving unsmoothly.

[0042] In one embodiment, see Figure 6 The synchronization component 54 includes two pulley blocks 541, a steel wire rope 542 and two connecting pieces 543. The two pulley blocks 541 are installed at intervals at the bottom of the screening box 2 along the width direction of the screening box 2. The steel wire rope 542 is ring-shaped and wound around the two pulley blocks 541. The two connecting pieces 543 are respectively rotatably installed at both ends of the installation roller 51. The two connecting pieces 543 are respectively connected to the two opposite sections of the steel wire rope 542.

[0043] In this embodiment, the two pulley blocks 541 are used for winding the steel wire rope 542, so that the steel wire rope 542 forms a U-shaped ring structure. At this time, the steel wire rope 542 in the width direction of the screening box 2 can move synchronously, and the connecting member 543 constitutes the movable member. The connecting member 543 is respectively connected to the installation roller 51 and the steel wire rope 542, so that under the drive of the steel wire rope 542, the two ends of the installation roller 51 move synchronously.

[0044] In this embodiment, the nut is integrally formed with one of the connecting members 543 .

[0045] In one embodiment, see Figure 6 The pulley group 541 includes a first pulley 5411 and two second pulleys 5412. The first pulley 5411 and the second pulley 5412 are arranged at intervals along the length direction of the screening box 2, and the two second pulleys 5412 are arranged at intervals along the vertical direction. The wire rope 542 is wound around the first pulley 5411 and the second pulley 5412 in sequence.

[0046] In this embodiment, the first pulley 5411 is rotatably installed at the bottom of the screening box 2 along the axis in the width direction of the screening box 2, and is arranged close to the feed port 21. The two second pulleys 5412 are coaxially arranged and rotatably installed at the bottom of the screening box 2 along the axis in the vertical direction, and are arranged away from the feed port 21. The steel wire rope 542 is sequentially wound around the first pulley 5411, one of the second pulleys 5412, one of the second pulleys 5412 of the other pulley group 541, the first pulley 5411 of the other pulley group 541, the other second pulley 5412 of the other pulley group 541, the other second pulley 5412, and the first pulley 5411.

[0047] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the present invention is described in detail: During specific use, the size of the sieve hole can be adjusted as needed, that is, the first motor 432 drives the screw rod to rotate, and the screw rod is threadedly matched with the second sieve 42 to adjust the relative positions of the first sieve 41 and the second sieve 42, so as to achieve the adjustment of the sieve hole. After the adjustment is completed, the salt is transported from the feed inlet 21 to the first channel 22, and the screening box 2 is vibrated by the vibration component 3. During the vibration process, the salt will flow in the first channel 22, and the salt that meets the requirements will pass through the sieve hole into the second channel 23, so that the screening of the salt can be achieved. When a large number of sieve holes are uniformly filled with salt, the salt will be filtered out. When salt particles are stuck, the feeding can be stopped. On the one hand, the first motor 432 can drive the first screw rod 431 to be installed forward and reversed at a high frequency, so that the second screen 42 can make a high-frequency reciprocating motion to shear the salt particles stuck in the sieve holes, so as to break the salt particles and make them fall into the first channel 22, thereby preventing the salt particles from being stuck in the sieve holes. On the other hand, the second motor 532 can also drive the second screw rod 531 to rotate, thereby driving the installation roller 51 to move along the length direction of the screening box 2, and the salt particles are ejected by the elastically retractable ejector pin 52 to clean the sieve holes.

[0048] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A salt screening device, characterized in that: It includes: frame; A screening box, wherein the screening box is elastically and telescopically mounted on the frame through an elastic member, the screening box is provided with a screening channel extending along its length direction, and one end of the screening box is also provided with a feed port communicating with the screening channel; a vibration assembly, disposed at the bottom of the screening box; and A screen assembly is arranged in the screening channel to separate the screening channel into a first channel and a second channel. The screen assembly is provided with a plurality of screen holes arranged in an array, and the screen holes connect the first channel and the second channel, wherein the size of the screen holes can be adjusted.

2. The salt screening device according to claim 1, characterized in that: The screen assembly includes a first screen, a second screen and a first drive assembly, the first screen and the second screen are stacked, wherein the second screen is movably arranged along the length direction of the screening box so that the screen holes of the first screen and the second screen correspond or are staggered, and the first drive assembly is connected to the second screen to drive the second screen to move.

3. The salt screening device according to claim 2, characterized in that: A threaded hole is provided in the middle of one end of the second screen; The first driving assembly includes a first screw rod and a first motor. The first screw rod is rotatably installed in the second channel along the axis in the length direction of the screening box. The first screw rod is threadably matched with the second screen mesh. The main shaft of the first motor is connected to one end of the first screw rod.

4. The salt screening device according to claim 1, characterized in that: The salt screening device also includes a cleaning component, which is arranged in the second channel and is used to clean the salt particles in the sieve holes.

5. The salt screening device according to claim 4, characterized in that: The cleaning assembly includes a mounting roller, a plurality of ejectors and a second driving assembly. Both ends of the mounting roller slide along the length direction of the screening box and are rotatably mounted on the opposite side walls of the second channel along its own axis. A plurality of ejectors are arrayed on the circumference of the mounting roller, and each of the ejectors is elastically telescopically arranged along the radial direction of the mounting roller, so that when the mounting roller moves, at least part of the ejectors can extend into the sieve hole to eject the salt particles in the sieve hole. The second driving assembly is connected to one end of the mounting roller to drive the mounting roller to move.

6. The salt screening device according to claim 5, characterized in that: The two opposite side walls of the second channel are provided with slide grooves, the slide grooves extend along the length direction of the screening box, the ends of the mounting rollers are adapted to the slide grooves, and the mounting rollers are slidably and rotatably mounted in the slide grooves.

7. The salt screening device according to claim 6, characterized in that: The second driving assembly includes a nut, a second screw rod and a second motor. The nut is rotatably connected to one end of the mounting roller. The second screw rod is rotatably mounted on the side wall of the screening box. The second screw rod is threadably matched with the nut. The main shaft of the second motor is connected to one end of the second screw rod.

8. The salt screening device according to claim 5, characterized in that: The cleaning assembly also includes a synchronization assembly, which is arranged at the bottom of the screening box and simultaneously connects two opposite ends of the mounting roller so that the two ends of the mounting roller move synchronously.

9. The salt screening device according to claim 8, characterized in that: The synchronization component includes two pulley blocks, a steel wire rope and two connecting pieces. The two pulley blocks are installed at intervals at the bottom of the screening box along the width direction of the screening box. The steel wire rope is wound around the two pulley blocks in a ring shape. The two connecting pieces are rotatably installed at both ends of the installation roller, and the two connecting pieces are respectively connected to two opposite sections of the steel wire rope.

10. The salt screening device according to claim 9, characterized in that: The pulley block comprises a first pulley and two second pulleys, the first pulley and the second pulleys are arranged at intervals along the length direction of the screening box, the two second pulleys are arranged at intervals along the vertical direction, and the steel wire rope is sequentially wound around the first pulley and the second pulley.

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