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CN-121156027-B - Heavy metal contaminated soil pretreatment device beneficial to uniform mixing

CN121156027BCN 121156027 BCN121156027 BCN 121156027BCN-121156027-B

Abstract

The invention belongs to the technical field of soil pretreatment and discloses a heavy metal contaminated soil pretreatment device beneficial to uniform mixing, which comprises a mounting frame, wherein the middle part of the mounting frame is fixedly connected with a stirring chamber, one side of the stirring chamber is provided with a feeding conveying belt, the other side of the stirring chamber is provided with a discharging conveying belt, one side, close to the stirring chamber, of the top of the feeding conveying belt is fixedly connected with a drug discharging hopper, and the matching of structures such as a return sleeve, a sliding rod, an eccentric sliding column and a chain is arranged, so that the synchronous reciprocating motion of a movable plate, a double-layer screen, a vibrating frame and a double-layer screen is facilitated, a driving source is fully utilized, and the processes of crushing, grinding, primary screening and double-layer screening are mutually combined and distributed, so that soil blocks are classified from large to small, different crushing tools are used, the crushing and screening efficiency is improved, the fault rate and the maintenance cost are greatly reduced, and the service life of core precision parts is prolonged.

Inventors

  • PING PENG
  • LIU MEILING

Assignees

  • 江苏恒誉环保科技有限公司

Dates

Publication Date
20260508
Application Date
20250930

Claims (5)

  1. 1. The utility model provides a do benefit to evenly mixed's heavy metal contaminated soil preprocessing device, includes mounting bracket (1), mounting bracket (1) middle part rigid coupling has teeter chamber (6), feeding conveyer belt (4) are installed to one side of teeter chamber (6), ejection of compact conveyer belt (7) are installed to the opposite side of teeter chamber (6), one side rigid coupling that is close to teeter chamber (6) at feeding conveyer belt (4) top has down medicine fill (5), characterized in that still includes: the crushing and screening mechanism (2), the crushing and screening mechanism (2) is connected with the feeding conveyer belt (4); the automatic grinding mechanism (3), the said automatic grinding mechanism (3) locates at breaking and screening mechanism (2); the crushing and screening mechanism (2) firstly crushes large soil into small soil blocks, and then refines the soil through the automatic grinding mechanism (3) after screening and impurity removal, and the crushing and screening mechanism (2) comprises a pretreatment box body (201) fixedly connected above the feeding conveyer belt (4); The automatic grinding mechanism (3) comprises a fixed plate (308) fixedly connected to the middle part of the pretreatment box body (201), a plurality of grinding grooves (309) are uniformly formed in the fixed plate (308), tapered grinding columns (307) are movably sleeved in the grinding grooves (309), the bottoms of the tapered grinding columns (307) are jointly connected with a vibration frame (306) in a rotating mode, four corners of the vibration frame (306) are also elastically connected to a corner plate (2012) through spiral springs (2011), and a square sleeve (2018) is fixedly connected to the side wall of the vibration frame (306) in the same way; The automatic grinding mechanism (3) further comprises a protective shell (301) fixedly connected to the side wall of the pretreatment box body (201), a driving motor (305) is fixedly connected to the side wall of the protective shell (301), rotating shafts (303) are fixedly connected to the output end of the driving motor (305), four rotating shafts (303) are arranged, and the four rotating shafts (303) are meshed with chains (302) through gears (304); The upper rotating shafts (303) are fixedly connected with the eccentric shafts (2015), the remaining three rotating shafts (303) are slidably connected into the rectangular sleeve (2018) through eccentric sliding columns (3012), sliding grooves (3011) are formed in the rotating shafts (303), the eccentric sliding columns (3012) are slidably connected into the sliding grooves (3011) through threaded rods (3013), and the end parts of the threaded rods (3013) are rotatably connected onto the rotating shafts (303); the utility model discloses a tapered grinding column, including tapered grinding column (307), inner chamber swing joint of tapered grinding column (307) has flexible top cap (3010), the inner chamber elastic connection of flexible top cap (3010) has wave groove post (3015), wave groove post (3015) bottom rigid coupling is in the bottom internal surface of tapered grinding column (307), the inner chamber lower extreme of flexible top cap (3010) has extrusion slider (3014) fixedly connected with, and extrusion slider (3014) sliding connection is in the inslot of wave groove post (3015).
  2. 2. The heavy metal contaminated soil pretreatment device beneficial to uniform mixing according to claim 1, wherein the crushing and screening mechanism (2) further comprises a feed hopper (202) fixedly connected to the top of the pretreatment box body (201), a guide plate (203) is rotatably connected to the inner cavity of the feed hopper (202), and the edge of the feed hopper (202) is lapped on the guide plate (203) through a rubber baffle plate (204).
  3. 3. The heavy metal contaminated soil pretreatment device beneficial to uniform mixing according to claim 2, wherein a movable plate (208) is connected to the bottom of the guide plate (203) in a sliding manner, movable crushing teeth (206) are fixedly connected to the side wall of the movable plate (208), fixed teeth (205) are fixedly connected to the upper side of an inner cavity of the pretreatment box body (201), an elastic telescopic rod (2013) and a movable pull rod (2014) are respectively connected to the bottom edge of the movable plate (208) in a rotating manner, the elastic telescopic rod and the movable pull rod are both connected to the pretreatment box body (201) in a rotating manner through support plates, and eccentric shafts (2015) are fixedly connected to two sides of the movable plate (208).
  4. 4. The heavy metal contaminated soil pretreatment device beneficial to uniform mixing according to claim 3, wherein a double-layer screen (209) is slidingly connected to the upper side of the middle part of the pretreatment box body (201), a compound screen (2010) is slidingly connected to the lower side of the pretreatment box body, a plurality of corner plates (2012) are fixedly connected to the corners of the inner cavity of the pretreatment box body (201), the double-layer screen (209) and the compound screen (2010) are elastically connected with the corner plates (2012) through spiral springs (2011), and a plurality of discharge grooves (207) are formed in two sides of the pretreatment box body (201).
  5. 5. The heavy metal contaminated soil pretreatment device beneficial to uniform mixing according to claim 4, wherein the side walls of the double-layer screen (209) and the double-layer screen (2010) are fixedly connected with a square sleeve (2018), two sides of the square sleeve (2018) are fixedly connected with sliding rods (2016), and the sliding rods (2016) are slidably connected onto the pretreatment box body (201) through limiting sleeves (2017).

Description

Heavy metal contaminated soil pretreatment device beneficial to uniform mixing Technical Field The invention belongs to the technical field of soil pretreatment, and particularly relates to a heavy metal polluted soil pretreatment device beneficial to uniform mixing. Background The heavy metal contaminated soil pretreatment device is specially used for preliminary treatment before repairing heavy metal contaminated soil, and aims to prepare soil materials meeting requirements for subsequent core repairing links such as stabilization, leaching, bioremediation and the like through a series of physical or chemical methods, wherein the main pretreatment process comprises the steps of crushing and grinding, screening and separating, mixing and homogenizing, crushing large-sized soil to smaller granularity, screening and removing large-sized impurities such as stones, construction wastes and the like in the soil, and then fully and uniformly contacting a repairing agent with the contaminated soil particles so as to carry out subsequent soil repairing work. A sample soil pre-crushing treatment device for soil pollution detection in the prior art with the publication number of CN119114204B relates to the technical field of sample soil crushing and comprises a mounting frame; the crushing box body is rotatably arranged on the mounting frame; the stirring and crushing device is rotatably arranged in the crushing box body; the invention relates to a grinding device, which comprises a grinding frame, clamping pieces, a stirring and crushing device, a filtering device and a grinding device, wherein the grinding frame is rotatably arranged in a grinding box body and grinds sample soil when rotating; Although the filtering device is used for adjusting the fineness of the filtering, the device is mainly used for crushing the soil, is difficult to be applied to pretreatment of various types of soil, for example, when the soil with a large stone content is treated, the breakage, the rolling mouth and the tearing and the deformation of the filtering screen mesh of the precision cutter are easily caused, and the service life of the precision parts is reduced. Disclosure of Invention In order to solve the problem that the prior device is difficult to be suitable for pretreatment of various kinds of soil in the background technology, the invention provides a heavy metal polluted soil pretreatment device which is favorable for uniform mixing. The heavy metal polluted soil pretreatment device beneficial to uniform mixing comprises a mounting frame, a crushing and screening mechanism, a stirring chamber, a feeding conveying belt, a discharging hopper, a crushing and screening mechanism and a stirring device, wherein the middle part of the mounting frame is fixedly connected with the stirring chamber; the automatic grinding mechanism is positioned on the crushing and screening mechanism; The crushing and screening mechanism firstly crushes large soil into small soil blocks, and refines the soil through the automatic grinding mechanism after screening and impurity removal, and comprises a pretreatment box body fixedly connected above a feeding conveying belt; The automatic grinding mechanism comprises a fixed plate fixedly connected to the middle of the pretreatment box body, a plurality of grinding grooves are uniformly formed in the fixed plate, the grinding grooves are divided into two inverted conical designs with upper widths and lower widths, a conical grinding column I is movably sleeved on the lower sides of the grinding grooves, a plurality of conical grinding columns II are fixedly connected to the tops of the conical grinding columns I through connecting columns, a plurality of vibrating frames are connected to the bottoms of the conical grinding columns II in a rotating mode, four corners of the vibrating frames are also connected to the corner plates through spiral springs in an elastic mode, and a rectangular sleeve is fixedly connected to the side walls of the vibrating frames. Preferably, the crushing and screening mechanism further comprises a feeding hopper fixedly connected to the top of the pretreatment box body, a guide plate is rotatably connected to the inner cavity of the feeding hopper, and the edge of the feeding hopper is lapped on the guide plate through a rubber baffle plate. Preferably, the baffle bottom sliding connection has the movable plate, the lateral wall rigid coupling of movable plate has the broken tooth of removal, the inner chamber upside rigid coupling of pretreatment box has the fixed tooth, the bottom edge of movable plate rotates respectively and is connected with elasticity telescopic link and movable pull rod, and both rotate and connect on the pretreatment box through the backup pad, the both sides of movable plate all rigid coupling has the eccentric shaft. Preferably, the upper side of the middle part of the pretreatment box body is slidingly connected with a double-layer screen, the