CN111438170B

CN111438170B - Laboratory soil screening and harmful gas purification circulating device

Info

Publication number: CN111438170B
Application number: CN202010228494.4A
Authority: CN
Inventors: 石佳奇; 龙涛; 解宇峰; 曹少华; 盛峰
Original assignee: Nanjing Institute of Environmental Sciences MEE
Current assignee: Nanjing Institute of Environmental Sciences MEE
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-08
Anticipated expiration: 2040-03-27
Also published as: CN111438170A

Abstract

The invention discloses a laboratory soil screening and harmful gas purification circulating device, which comprises a supporting component, a screening barrel, a power component and a gas purification component, wherein the screening component comprises an outer barrel, an inner barrel and a screen mesh, a sealing cover is arranged on the outer barrel, a soil throwing hopper is arranged on the side surface of the outer barrel, a soil outlet is formed in the bottom of the outer barrel, the outer barrel is connected with the supporting component, the inner barrel is sleeved in the outer barrel, a through hole is formed in one end of the inner barrel and communicated with the soil throwing hopper, a pressure plate is clamped at the other end of the inner barrel, the power component comprises a rotating motor and a swinging motor, the rotating motor provides power for a rotating rod, the swinging motor is used for driving the outer barrel to vibrate up and down, the gas purification component comprises a heating seat and a gas purification; the invention has reasonable structural design and high soil screening efficiency, and is suitable for mass popularization; the invention has reasonable structural design and high soil screening efficiency, and is suitable for mass popularization.

Description

Laboratory soil screening and harmful gas purification circulating device

Technical Field

The invention relates to the technical field of soil remediation equipment, in particular to a laboratory soil screening and harmful gas purification circulating device.

Background

The soil is a natural body composed of mineral components with different thicknesses layer by layer. The soil and the matrix layer are distinguished by morphological, physical, chemical and mineralogical characteristics. The soil layer is different from the matrix layer due to the interaction of the crust, water vapor, atmosphere and biosphere. It is a mixed component of minerals and organic matter, and exists in solid, gas and liquid states. The loose soil particles combine to form a soil pattern that fills the interstices. The pores contain a dissolving solution and air; therefore, the soil is generally regarded as having various states.

When a laboratory analyzes a soil sample, soil needs to be screened firstly to remove impurities such as stones in the soil, so that the accuracy of an experimental analysis result is improved, but most of the screens in the existing soil screening device are fixedly installed, so that the screens cannot be replaced according to experimental needs, and the application range of the device is limited; secondly, the existing soil screening devices are all screened by vibration, so that the soil screening efficiency is low, and the working efficiency is seriously influenced; finally, the existing soil screening device has no gas purification effect, and is very easy to cause the pollution of experimental environment.

Disclosure of Invention

Aiming at the technical problems, the invention provides the laboratory soil screening and harmful gas purification circulating device which is convenient for replacing the screen and can separate and purify pollutants in soil.

The technical scheme of the invention is as follows: a laboratory soil screening and harmful gas purification circulating device comprises a supporting assembly, a screening assembly, a power assembly and a gas purification assembly; the supporting assembly comprises a base and a connecting plate, wherein an upright post is vertically arranged on the base, a first clamping groove is arranged on the connecting plate, the connecting plate is connected with the upright post in a sliding mode through a sliding sleeve, and a swing frame is arranged at the lower end of the connecting plate; the screening component comprises an outer barrel, an inner barrel and a screen, wherein a sealing cover is arranged at one end of the outer barrel, the sealing cover is fixedly connected with the outer barrel through a bolt, a clamping hole is formed in the top of the sealing cover, a soil throwing hopper is arranged on the side face of the outer barrel and is communicated with the inside of the outer barrel through a soil inlet pipe, an ejector rod is arranged on the soil inlet pipe, a rotating rod is horizontally clamped in the outer barrel, a soil outlet is formed in the bottom of the outer barrel, the outer barrel is located in a first clamping groove and is fixedly connected with a connecting plate through an installation lug, the inner barrel is movably sleeved in the outer barrel and penetrates through the rotating rod, one end of the inner barrel is sealed and is provided with a second clamping groove, a through hole is formed in the sealed end of the inner barrel, a sealing plate; the power assembly comprises a rotating motor and a swinging motor, the rotating motor is fixedly arranged at the end part of the outer barrel through a motor base, an output shaft of the rotating motor is fixedly connected with the rotating rod, the swinging motor is fixedly arranged on the base, an eccentric wheel is arranged on an output shaft of the swinging motor, and the eccentric wheel is movably hinged with the bottom of the swinging frame through a hinge rod; the gas purification assembly comprises a heating seat and a gas purification box, the heating seat is fixedly arranged inside the outer barrel, the unearthing port penetrates through the heating seat, the gas purification box is fixedly arranged on the base, the gas purification box is connected with the outer barrel through a hose, a draught fan is arranged at the joint, an activated carbon filter screen, an ozone generator and a condenser are sequentially arranged inside the gas purification box from top to bottom, a gas channel is arranged on the ozone generator, an air nozzle is arranged inside the gas channel, a condensate outlet and a gas outlet are arranged on the gas purification box, the height of the gas outlet is higher than that of the condensate outlet, the rotating motor, the swing motor, the heating seat, the draught fan and the ozone generator are powered by an external power supply, and the unearthing port, the condensate outlet and the gas outlet are respectively.

Further, the inside level of inner tube is provided with soil stirring claw, and the vertical fluting that is provided with on the soil stirring claw is provided with the cutting strip between two adjacent flutings, and the inner tube rotates the in-process, and the pressure disk is static relatively for soil in the soil stirring claw constantly stirs the inner tube utilizes the cutting strip to cut the breakage to the soil of large granule simultaneously, is favorable to improving soil screening work efficiency.

Furthermore, a groove is arranged at the upper end of the heating seat; the soil after being screened in the outer barrel is conveniently discharged from the soil outlet.

Further, the inside ka tai that is provided with of through-hole, the inboard opening part of through-hole is provided with the guide bar, the closing plate runs through the guide bar, and the joint is on ka tai, the cover is equipped with reset spring on the guide bar, reset spring one end and guide bar butt, the other end and closing plate butt, the reset spring outside is equipped with the dirt proof boot, when needing to throw to inner tube inside throw with soil sample, withstand the closing plate through the ejector pin, make the closing plate move on the guide bar, open the through-hole, throw with the completion after, loosen the ejector pin, the closing plate is again the joint on the inside ka tai of through-hole under reset spring's effect, realize the.

Furthermore, a ball is arranged at the joint of the inner cylinder and the pressure plate. Through setting up the ball for the rotation of inner tube for the pressure disk is more smooth and easy, reduces the wearing and tearing between inner tube and the pressure disk.

Further, the inner tube bottom is through spline housing and dwang joint, the dwang tip is provided with fastening nut, fastening nut is used for compressing tightly pressure disk and inner tube, through setting up the spline housing for it is more firm to be connected between inner tube and the dwang, avoids the dwang to rotate the in-process inner tube and skids, thereby improves soil screening efficiency, through setting up fastening nut, avoids the inner tube to rotate the in-process, and the soil that does not screen gets into the urceolus from the gap between pressure disk and the inner tube, improves the precision of soil screening.

Furthermore, the top of the outer barrel is provided with a transparent window, the outer wall of the inner barrel is provided with a positioning bulge, when a soil sample needs to be added into the inner barrel, the position of the inner barrel is adjusted, and when the positioning bulge appears in the transparent window, the soil inlet pipe is just opposite to the through hole, so that the convenience of the device is improved.

The working principle of the invention is as follows: when the device is used, a screen with a proper aperture is selected according to experimental requirements, the screen is inserted into a second clamping groove of the inner cylinder, the pressure plate is clamped at the end part of the screen, the pressure plate and the screen are inserted into a rotating rod in the outer cylinder together, and the pressure plate and the screen are tightly pressed through nuts; closing a sealing cover at the upper end of the outer barrel, aligning and clamping a clamping hole on the sealing cover and a clamping column on the pressure plate, and then connecting and fixing the sealing cover and the outer barrel through a bolt; the outer cylinder is placed in a clamping groove on a connecting plate and is fixed with the connecting plate through a mounting lug, the position of the inner cylinder is adjusted, when a positioning bulge appears in a transparent window, the soil inlet pipe is just opposite to the through hole, the ejector rod abuts against the sealing plate to enable the guide rod of the sealing plate to move, the through hole is opened, after the feeding is completed, the ejector rod is loosened, and the sealing plate is clamped on a clamping table in the through hole again under the action of a reset spring to realize the sealing of the through hole; the external power supply drives the rotating motor and the swinging motor to start, the rotating motor drives the rotating rod and the inner cylinder to rotate together, the soil stirring claw continuously stirs soil in the inner cylinder, and the cutting strip is used for cutting and crushing large-particle soil; the screened fine-particle soil passes through a screen and then enters a heating seat of the outer cylinder, and large-particle impurities in the soil stay in the inner cylinder; the power supply is provided for the heating seat, the draught fan and the ozone generator through the external power supply, the screened soil is heated, volatile gas in the soil enters the gas purification box under the action of the draught fan, the volatile gas is sequentially filtered by the activated carbon filter screen, disinfected by the ozone generator and condensed by the condenser, condensed liquid is discharged through the condensate outlet, and non-condensable gas is discharged and collected through the gas outlet.

Compared with the prior art, the invention has the beneficial effects that: the soil screening device is reasonable in structural design, and the two motors drive the inner cylinder to rotate and vibrate up and down, so that the soil screening effect and efficiency are greatly improved; by arranging the movable screen, the device can replace the screen with a proper aperture according to the experimental needs, the practicability of the device is greatly improved, and by arranging the outer cylinder, the flying dust generated in the rotating process of the inner cylinder is prevented from escaping, thereby being beneficial to the protection of the experimental environment; according to the invention, the screened soil is heated, so that harmful gases in the soil are volatilized, and can be recycled after being filtered, disinfected and condensed, and the economy of the device is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the seal plate of the present invention connected to the inner cylinder;

FIG. 4 is a schematic view of the connection of the screen of the present invention to the inner barrel;

FIG. 5 is a schematic view of the platen and inner cylinder configuration of the present invention;

FIG. 6 is a schematic view of the structure of a soil stirring claw of the present invention;

wherein, 1-supporting component, 10-base, 11-connecting plate, 110-first clamping groove, 111-sliding sleeve, 12-upright post, 13-swinging rack, 2-screening component, 20-outer cylinder, 200-soil throwing bucket, 201-soil inlet pipe, 202-ejector rod, 203-rotating rod, 204-soil outlet, 205-mounting ear, 206-transparent window, 21-inner cylinder, 210-second clamping groove, 211-through hole, 2110-clamping table, 2111-guide rod, 2112-reset spring, 212-sealing plate, 213-pressing plate, 2130-clamping column, 214-soil stirring claw, 2140-slotting, 2141-cutting strip, 215-ball, 216-spline sleeve, 217-positioning bulge, 22-screen, 23-sealing cover, 230-clamping hole, 3-power component, 30-rotating motor, 300-motor base, 31-swinging motor, 310-eccentric wheel, 311-hinged rod, 4-gas purification component, 40-heating base, 41-gas purification box, 411-induced draft fan, 412-active carbon filter screen, 413-ozone generator, 4130-body channel, 4131-air nozzle, 414-condenser, 415-condensate outlet and 416-gas outlet.

Detailed Description

Example (b): as shown in fig. 1 and 2, the laboratory soil screening and harmful gas purification circulating device comprises a support component 1, a screening component 2, a power component 3 and a gas purification component 4; the supporting component 1 comprises a base 10 and a connecting plate 11, wherein an upright post 12 is vertically arranged on the base 10, a first clamping groove 110 is arranged on the connecting plate 11, the connecting plate 11 is connected with the upright post 12 in a sliding manner through a sliding sleeve 111, and a swing frame 13 is arranged at the lower end of the connecting plate 11;

as shown in fig. 1, 3, 4, 5 and 6, the sieving assembly 2 comprises an outer cylinder 20, an inner cylinder 21 and a sieve 22, wherein one end of the outer cylinder 20 is provided with a sealing cover 23, the sealing cover 23 is fixedly connected with the outer cylinder 20 through bolts, the top of the inside of the sealing cover 23 is provided with a clamping hole 230, the side surface of the outer cylinder 20 is provided with a soil throwing hopper 200, the soil throwing hopper 200 is communicated with the inside of the outer cylinder 20 through a soil inlet pipe 201, the soil inlet pipe 201 is provided with a top rod 202, the outer cylinder 20 is horizontally clamped with a rotating rod 203, the bottom is provided with a soil outlet 204, the outer cylinder 20 is positioned in a first clamping groove 110 and is fixedly connected with a connecting plate 11 through a mounting lug 205, the top of the outer cylinder 20 is provided with a transparent window 206, the outer wall of the inner cylinder 21 is provided with a positioning protrusion 217, when a soil sample needs to be thrown into the inner cylinder, the convenience of the device is improved; the inner cylinder 21 is movably sleeved in the outer cylinder 20 and penetrates through the rotating rod 203, one end of the inner cylinder 21 is sealed, and is provided with a second clamping groove 210, a through hole 211 is arranged at the closed end of the inner cylinder 21, a sealing plate 212 is movably arranged on the through hole 211, a clamping table 2110 is arranged in the through hole 211, a guide rod 2111 is arranged at the opening at the inner side of the through hole 211, the sealing plate 212 penetrates through the guide rod 2111, and is clamped on the clamping table 2110, a return spring 2112 is sleeved on the guide rod 2111, one end of the return spring 2112 is abutted against the guide rod 2111, the other end is abutted against the sealing plate 212, when a soil sample needs to be added into the inner barrel 21, the top rod 202 props against the sealing plate 212, so that the sealing plate 212 moves on the guide rod 2111, the through hole 211 is opened, after the addition is completed, the ejector rod 202 is loosened, and the sealing plate 212 is clamped on the clamping table 2110 in the through hole 211 again under the action of the return spring 2112, so that the through hole 211 is sealed; the side wall of the inner cylinder 21 is arranged in a hollow manner, the other end of the inner cylinder 21 is clamped with the pressure plate 213, the end part of the pressure plate 213 is provided with a clamping column 2130, and the clamping column 2130 is matched and clamped with the clamping hole 230; the soil stirring claw 214 is horizontally arranged in the inner cylinder 21, the slots 2140 are vertically arranged on the soil stirring claw 214, the cutting strips 2141 are arranged between every two adjacent slots 2140, and the pressing disc 213 is relatively static in the rotation process of the inner cylinder 21, so that the soil in the inner cylinder 21 is continuously stirred by the soil stirring claw 214, and meanwhile, the cutting strips 2141 are utilized to cut and crush large-particle soil, which is favorable for improving the soil screening work efficiency; a ball 215 is arranged at the joint of the inner cylinder 21 and the pressure plate 213; by arranging the balls 215, the inner cylinder 21 can rotate relative to the pressure plate 213 more smoothly, and the abrasion between the inner cylinder 21 and the pressure plate 213 is reduced; the bottom of the inner cylinder 21 is clamped with the rotating rod 203 through the spline sleeve 216, the end part of the rotating rod 203 is provided with a fastening nut which is used for pressing the pressure plate 213 and the inner cylinder 21 tightly, the inner cylinder 21 and the rotating rod 203 are connected more stably through the spline sleeve 216, the inner cylinder 21 is prevented from slipping in the rotating process of the rotating rod 203, the soil screening efficiency is improved, and the situation that unscreened soil enters the outer cylinder 20 from a gap between the pressure plate 213 and the inner cylinder in the rotating process of the inner cylinder 21 is avoided through the fastening nut, so that the soil screening precision is improved;

as shown in fig. 1, the power assembly 3 includes a rotating motor 30 and a swinging motor 31, the rotating motor 30 is fixedly disposed at the end of the outer cylinder 20 through a motor base 300, an output shaft of the rotating motor 30 is fixedly connected with a rotating rod 203, the swinging motor 31 is fixedly disposed on the base 10, an output shaft of the swinging motor 31 is provided with an eccentric wheel 310, and the eccentric wheel 310 is movably hinged with the bottom of the swinging frame 13 through a hinge rod 311; the rotary motor 30 is a YE3 type high-efficiency energy-saving motor produced by Zhengzhou five-star motor company Limited, and the swing motor 31 is a 3kw type three-phase asynchronous motor produced by Henan Yuexin industry Limited;

as shown in fig. 1 and 2, the gas purification assembly 4 includes a heating base 40 and a gas purification box 41, the heating base 40 is fixedly disposed inside the outer cylinder 20, and a groove is disposed at the upper end of the heating base 40; the soil screened inside the outer cylinder 20 can be conveniently discharged from the soil outlet 204; the soil outlet 204 penetrates through the heating seat 40, the gas purification box 41 is fixedly arranged on the base 10, the gas purification box 41 is connected with the outer barrel 20 through a hose, a draught fan 411 is arranged at the joint, an activated carbon filter screen 412, an ozone generator 413 and a condenser 414 are sequentially arranged in the gas purification box 41 from top to bottom, a gas channel 4130 is arranged on the ozone generator 413, a gas nozzle 4131 is arranged in the gas channel 4130, a condensate outlet 415 and a gas outlet 416 are arranged on the gas purification box 41, the height of the gas outlet 416 is higher than that of the condensate outlet 415, the rotary motor 30, the swing motor 31, the heating seat 40, the draught fan 411 and the ozone generator 413 are powered by an external power supply, and control valves are arranged on the soil outlet 204, the condensate outlet 415 and the gas outlet 416; the heating seat 40 is an electric heating plate produced by Hongjing electrical equipment factory in the famous commercial white area, the induced draft fan 411 is a DSC _3881 type high-pressure low-noise fan produced by air-conditioning equipment Limited company in Fei, Texas, and the ozone generator 413 is a killer XDR-3K ozone generator.

When the device is used, the screen 22 with a proper aperture is selected according to experimental requirements, the screen 22 is inserted into the second clamping groove 210 of the inner cylinder 21, the pressing plate 213 is clamped at the end part of the screen 22, the pressing plate 213 and the screen 22 are inserted into the rotating rod 203 in the outer cylinder 20 together, and the pressing plate 213 and the screen 22 are pressed tightly through the nut; closing the sealing cover 23 on the upper end of the outer cylinder 20, aligning and clamping the clamping hole 230 on the sealing cover 23 with the clamping column 2130 on the pressing plate 2131, and then connecting and fixing the sealing cover 23 and the outer cylinder 20 through bolts; the outer cylinder is placed in the clamping groove 110 on the connecting plate 11 and is fixed with the connecting plate 11 through the mounting lug 205, the position of the inner cylinder 21 is adjusted, when the positioning protrusion 217 appears in the transparent window 206, the soil inlet pipe 201 is just opposite to the through hole 211, the push rod 202 pushes the sealing plate 212 to enable the sealing plate 212 to move on the guide rod 2111, the through hole 211 is opened, after the feeding is completed, the push rod 202 is loosened, and the sealing plate 212 is clamped on the clamping table 2110 in the through hole 211 again under the action of the return spring 2112 to realize the sealing of the through hole 211; the rotating motor 30 and the swing motor 31 are driven to start through an external power supply, the rotating motor 30 drives the rotating rod 203 and the inner barrel 21 to rotate together, meanwhile, the soil stirring claw 214 continuously stirs soil in the inner barrel 21, and meanwhile, the cutting strip 2141 is utilized to cut and crush large-particle soil; after passing through the screen 22, the screened fine-particle soil enters the heating seat 40 of the outer cylinder 20, and large-particle impurities in the soil stay in the inner cylinder 21; the heating seat 40, the induced draft fan 411 and the ozone generator 413 are powered by an external power supply, after the screened soil is heated, volatile gas in the soil enters the gas purification box 41 under the action of the induced draft fan 411, after the volatile gas is sequentially filtered by the activated carbon filter screen 412, disinfected by the ozone generator 413 and condensed by the condenser 414, condensed liquid is discharged through the condensed liquid outlet 415, and non-condensable gas is discharged and collected through the gas outlet 416.

Claims

1. A laboratory soil screening and harmful gas purification circulating device is characterized by comprising a supporting assembly (1), a screening assembly (2), a power assembly (3) and a gas purification assembly (4); the supporting assembly (1) comprises a base (10) and a connecting plate (11), wherein an upright post (12) is vertically arranged on the base (10), a first clamping groove (110) is arranged on the connecting plate (11), the connecting plate (11) is connected with the upright post (12) in a sliding mode through a sliding sleeve (111), and a swinging frame (13) is arranged at the lower end of the connecting plate (11); the screening component (2) comprises an outer barrel (20), an inner barrel (21) and a screen (22), wherein one end of the outer barrel (20) is provided with a sealing cover (23), the sealing cover (23) is fixedly connected with the outer barrel (20) through a bolt, a clamping hole (230) is formed in the top of the sealing cover (23), a soil throwing hopper (200) is arranged on the side surface of the outer barrel (20), the soil throwing hopper (200) is communicated with the inner part of the outer barrel (20) through a soil inlet pipe (201), a push rod (202) is arranged on the soil inlet pipe (201), a rotating rod (203) is horizontally clamped in the outer barrel (20), a soil outlet (204) is formed in the bottom of the soil throwing hopper, the outer barrel (20) is located in a first clamping groove (110) and is fixedly connected with a connecting plate (11) through an installation lug (205), the inner barrel (21) is movably sleeved in the outer barrel (20) and penetrates, a second clamping groove (210) is arranged, a through hole (211) is formed in one closed end of the inner cylinder (21), a sealing plate (212) is movably arranged on the through hole (211), the side wall of the inner cylinder (21) is arranged in a hollow mode, a pressing plate (213) is clamped at the other end of the inner cylinder (21), a clamping column (2130) is arranged at the end portion of the pressing plate (213), and the clamping column (2130) is matched and clamped with the clamping hole (230); the power assembly (3) comprises a rotating motor (30) and a swinging motor (31), the rotating motor (30) is fixedly arranged at the end part of the outer barrel (20) through a motor base (300), an output shaft of the rotating motor (30) is fixedly connected with the rotating rod (203), the swinging motor (31) is fixedly arranged on the base (10), an eccentric wheel (310) is arranged on an output shaft of the swinging motor (31), and the eccentric wheel (310) is movably hinged with the bottom of the swinging frame (13) through a hinge rod (311); the gas purification component (4) comprises a heating seat (40) and a gas purification box (41), the heating seat (40) is fixedly arranged in the outer cylinder (20), the soil outlet (204) penetrates through the heating seat (40), the gas purification box (41) is fixedly arranged on the base (10), the gas purification box (41) is connected with the outer barrel (20) through a hose, a draught fan (411) is arranged at the joint, an active carbon filter screen (412), an ozone generator (413) and a condenser (414) are sequentially arranged in the gas purification box (41) from top to bottom, the ozone generator (413) is provided with a gas channel (4130), a gas nozzle (4131) is arranged in the gas channel (4130), the gas purification box (41) is provided with a condensate outlet (415) and a gas outlet (416), and the height of the gas outlet (416) is higher than that of the condensate outlet (415).

2. The laboratory soil screening and harmful gas purification and circulation device according to claim 1, wherein a soil stirring claw (214) is horizontally arranged inside the inner cylinder (21), slots (2140) are vertically arranged on the soil stirring claw (214), and a cutting strip (2141) is arranged between two adjacent slots (2140).

3. The laboratory soil screening and harmful gas purification cycle apparatus as claimed in claim 1, wherein a groove is formed at an upper end of the heating base (40).

4. The laboratory soil screening and harmful gas purification circulating device according to claim 1, wherein a clamping table (2110) is arranged inside the through hole (211), a guide rod (2111) is arranged at an opening at the inner side of the through hole (211), the sealing plate (212) penetrates through the guide rod (2111) and is clamped on the clamping table (2110), a return spring (2112) is sleeved on the guide rod (2111), one end of the return spring (2112) abuts against the guide rod (2111), the other end of the return spring abuts against the sealing plate (212), and a dustproof sleeve is arranged outside the return spring (2112).

5. The laboratory soil screening and harmful gas purification cycle device according to claim 1, wherein a ball (215) is arranged at the joint of the inner cylinder (21) and the pressure plate (213).

6. The laboratory soil screening and harmful gas purification and circulation device according to claim 1, wherein the bottom of the inner cylinder (21) is clamped with the rotating rod (203) through a spline sleeve (216), and a fastening nut is arranged at the end of the rotating rod (203) and is used for pressing the pressure plate (213) and the inner cylinder (21).