CN220794776U - Sample pretreatment device for detecting harmful gas of hexabromododecane - Google Patents

Abstract

The utility model discloses a sample pretreatment device for detecting hexabromododecane harmful gas, which comprises a left shell, a right shell, a crushing assembly, a tiling assembly, a rotating assembly, a lifting assembly and a autorotation assembly, wherein the left shell is provided with a plurality of holes; the left shell and the right shell are arranged in parallel left and right, integrally formed, and sequentially provided with a crushing assembly, a guide plate, a tiling assembly and a drying plate from top to bottom in the left shell at intervals; a turntable is arranged below the right shell relative to the drying plate and horizontally rotates through a rotating assembly; a plurality of sleeves are sequentially arranged on the upper surface of the turntable at intervals along the circumferential direction of the turntable, and the sleeves are rotationally connected with the turntable through bearings; the extraction tube is sleeved at the coaxial center of the upper end of the sleeve, an upper cover is arranged right above the extraction tube in the right shell, the upper cover vertically moves through the lifting assembly, and then the extraction tube is sealed, and then the extraction tube is subjected to rotary oscillation through the autorotation assembly. When the upper cover is sleeved with the extraction pipe, the extraction pipe can be driven to synchronously rotate, so that the stability of oscillation mixing is ensured.

Description

Sample pretreatment device for detecting harmful gas of hexabromododecane

Technical Field

The utility model relates to the technical field of detection, in particular to a sample pretreatment device for detecting hexabromododecane harmful gas.

Background

Hexabromododecane is a cycloaliphatic additive flame retardant with high bromine content, and has the characteristics of low consumption, good flame retardant effect, small influence on physical properties of materials and the like. Although hexabromododecane has excellent flame retardant effect, it constitutes a potential long-term hazard to humans and the environment; detection of hexabromododecane is required; however, the existing detection equipment is mainly manually operated in the pretreatment process of the sample, so that the pretreatment process is time-consuming and labor-consuming; in addition, the existing detection equipment is easy to be unstable and even topple when mixing the sample and the methylene dichloride. Therefore, the above problems need to be solved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a sample pretreatment device for detecting hexabromododecane harmful gas, which is driven by a second motor, drives a second rotating shaft to rotate through the meshing fit of a main gear and a secondary gear, and then realizes the synchronous rotation of an upper cover through the meshing fit of a large gear and a small gear, and further can drive an extraction pipe to synchronously rotate when the upper cover is sleeved with a corresponding extraction pipe, thereby ensuring the stability of oscillation mixing of a sample and dichloromethane and avoiding the occurrence of a dumping phenomenon.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model relates to a sample pretreatment device for detecting hexabromododecane harmful gas, which has the innovation points that: the device comprises a left shell, a right shell, a crushing assembly, a tiling assembly, a rotating assembly, a lifting assembly and a autorotation assembly; the left shell and the right shell are horizontally arranged in parallel left and right, integrally formed, and vertically communicated with each other on the upper surface of the left shell and provided with a feed pipe; the inside of the left shell is also provided with a crushing assembly, a guide plate, a tiling assembly and a drying plate at intervals from top to bottom in sequence, and samples are tiling on the drying plate for drying through the tiling assembly after being crushed by the crushing assembly; a round rotary table is horizontally arranged in the right shell relative to the lower part of the drying plate, and the rotary table horizontally rotates through a rotating assembly; a plurality of sleeves are vertically arranged on the upper surface of the turntable near the edge of the turntable at intervals in sequence along the circumferential direction of the turntable, and each sleeve is respectively and rotatably connected with the turntable through a bearing; the upper end of each sleeve is also vertically and coaxially sleeved with an extraction pipe, an upper cover matched with the right shell is further arranged right above each extraction pipe, each upper cover vertically moves up and down through a lifting assembly, and then the upper ends of the extraction pipes are respectively sealed, and the extraction pipes are driven to rotate and oscillate through a autorotation assembly.

Preferably, the guide plate is of a rectangular structure matched with the inside of the left shell, and four peripheral side surfaces of the guide plate are fixedly connected with corresponding inner side surfaces of the left shell respectively; the upper surface of the guide plate is also provided with an inclined surface, the inclined surface is inclined downwards left from the edge of the right end of the upper surface of the guide plate, then is inclined upwards when approaching the left inner side surface of the left shell, and is fixedly connected with the left inner side surface of the left shell in a sealing way, so that a funnel shape is formed, and a crushed sample is guided; the bending part of the guide plate is also embedded with a first electromagnetic valve for controlling the on-off of the guide plate, and then the crushed sample is conveyed to the drying plate through the first electromagnetic valve.

Preferably, the crushing assembly is arranged right above the guide plate at intervals and comprises a first motor, a first rotating shaft, a main crushing cutter and auxiliary crushing teeth; a first motor is horizontally and transversely arranged at the position, above the left outer side surface of the left shell, the output end of the first motor horizontally extends to the inside of the left shell and is connected with the left end of the first rotating shaft horizontally and transversely in a coaxial linkage manner, and the right end of the first rotating shaft is rotationally connected with the right inner side surface corresponding position of the left shell; a plurality of crushing layers are vertically arranged on the outer circumferential surface of the first rotating shaft at intervals from left to right in sequence, a plurality of main crushing cutters are uniformly distributed in each crushing layer along the circumferential direction of the crushing layers at intervals in an inclined manner, each main crushing cutter is obliquely arranged in parallel, one end of each main crushing cutter is fixedly connected with the first rotating shaft, and the other end of each main crushing cutter is arranged in a non-interference manner with the inner top surface of the left shell and the guide plate; the main crushing cutter is characterized in that a plurality of auxiliary crushing teeth are further uniformly distributed on each main crushing cutter at intervals, and the auxiliary crushing teeth on the adjacent main crushing cutters are arranged in a non-interference manner, so that under the drive of a first motor, the main crushing cutters and the auxiliary crushing teeth rotate along with a first rotating shaft, and a sample entering through a feeding pipe is crushed.

Preferably, the drying plate is of a rectangular structure matched with the inside of the left shell, and four peripheral side surfaces of the drying plate are respectively and fixedly connected with the corresponding inner side surfaces of the left shell in a sealing manner.

Preferably, a first telescopic pipe is also obliquely embedded in the right side surface of the left shell relative to the position of the leftmost extraction pipe, and the left end of the first telescopic pipe is arranged at the right end of the upper surface of the drying plate and is communicated with the inside of the left shell; the telescopic end of the first telescopic pipe is inclined downwards towards the upper end direction of the leftmost extraction pipe, a second electromagnetic valve for controlling the on-off of the first telescopic pipe is further arranged in the first telescopic pipe, and further the dried sample is sequentially conveyed into the corresponding extraction pipe which is rotated to the leftmost side through the rotating assembly, and when the telescopic end of the first telescopic pipe is required to be retracted to the limit position, the pressing action of the upper cover is not interfered.

Preferably, the tiling assembly comprises a first electric push rod, a second electric push rod, a tiling brush, a connecting rod, a reinforcing rod and a sliding block; two first electric push rods are horizontally and transversely screwed at intervals between the left outer side surface of the left shell and the guide plate and the drying plate, and the actions of the two first electric push rods are synchronous; a reinforcing rod is obliquely arranged between the tail part of each first electric push rod and the left outer side surface of the left shell, and the corresponding first electric push rods are reinforced and fixed through the reinforcing rods; the telescopic end of each first electric push rod horizontally extends into the left shell and is fixedly connected with the tail part of the corresponding second electric push rod which is vertically arranged, so that the corresponding second electric push rod is respectively driven to horizontally and transversely move in the left shell; a connecting rod is further vertically arranged at the tail part of each second electric push rod, and the upper end of each connecting rod is horizontally and transversely connected with the lower surface of the guide plate in a sliding manner through a sliding block respectively, and the blanking action of the first electromagnetic valve is not influenced respectively; the action of the two second electric push rods is synchronous, and the telescopic ends of the two second electric push rods are vertically arranged downwards and are respectively connected with the fixed ends of the tiling brushes; the width of the tiling brush is matched with that of the drying plate, and the cleaning end of the tiling brush is arranged towards the direction of the drying plate and is contacted with the upper surface of the drying plate; through the cooperation of first electric putter and second electric putter, the tiling brush carries out horizontal lateral shifting, and the sample tiling after smashing is dried on the desiccator, and the sample after the accessible tiling brush is pushed to first flexible pipe department simultaneously.

Preferably, a second telescopic pipe is also obliquely embedded in the right side surface of the right shell relative to the position of the rightmost extraction pipe, and the right end of the second telescopic pipe extends out of the right outer side surface of the right shell obliquely upwards; the telescopic end of the second telescopic pipe stretches downwards in an inclined mode towards the upper end direction of the rightmost extraction pipe, a third electromagnetic valve for controlling the connection and disconnection of the second telescopic pipe is further arranged in the second telescopic pipe, dichloromethane is sequentially conveyed into the corresponding extraction pipe which rotates to the rightmost side through the rotating assembly, and when the telescopic end of the second telescopic pipe is required to be retracted to the limit position, interference is not generated on the pressing action of the upper cover.

Preferably, the rotating assembly comprises a fixed plate, a side plate, a third motor, a main bevel gear, a secondary bevel gear, a third rotating shaft and a roller; a fixed plate matched with the inside of the right shell is also horizontally and fixedly arranged in the right shell relative to the right lower part of the turntable, and a side plate matched with the fixed plate is also vertically and longitudinally fixed between the right shell and the inner bottom surface of the right shell relative to the fixed plate; a third rotating shaft is further arranged at the middle position in the right shell in a coaxial manner relative to the left side of the side plate, the lower end of the third rotating shaft is rotatably connected with the inner bottom surface of the right shell, and the upper end of the third rotating shaft vertically extends upwards to the upper surface of the fixed plate, is fixedly connected with the lower surface of the turntable in a coaxial manner, and is rotatably connected with the fixed plate; a slave bevel gear is sleeved and fixed on the third rotating shaft relative to the right lower part of the fixed plate in a coaxial manner, and the slave bevel gear is arranged in a non-interference manner with the right shell, the left shell, the fixed plate and the side plate respectively; a third motor is arranged at the right side of the secondary bevel gear at a horizontal interval, the fixed end of the third motor is fixedly connected with the left side surface of the side plate in a threaded manner, the output end of the third motor is horizontally arranged towards the direction of the secondary bevel gear, and the third motor is meshed and connected with the secondary bevel gear through a main bevel gear to drive a third rotating shaft to rotate along the axial direction of the third rotating shaft, so that the turntable is driven to rotate in the horizontal direction; the upper surface of the fixed plate is also connected with a circle of rollers which are abutted against the lower surface of the turntable, and the circle of rollers are coaxially arranged with the third rotating shaft and are respectively arranged without interference with the third rotating shaft; each roller is conical, and one end of the roller, which is close to the third rotating shaft, is a small end, and the other end of the roller is a large end, so that the linear speed of the roller, which is close to the third rotating shaft when the turntable rotates, is smaller.

Preferably, the lifting assembly comprises a hydraulic cylinder and a pressing plate; a hydraulic cylinder is further vertically arranged in the middle of the upper surface of the right shell, a piston rod of the hydraulic cylinder vertically extends downwards to the inside of the right shell and is in threaded connection with the upper surface of the pressing plate which is horizontally arranged, so that the pressing plate is driven to vertically move up and down in the right shell; the pressing plate is of a circular structure, all the upper covers are arranged on the lower surface of the pressing plate in a circular coaxial mode, and are respectively connected with the pressing plate in a rotating mode through bearings, and then the lower half portion of the upper cover is in sealing and sleeving connection with the upper end of the corresponding extraction pipe under the driving of the hydraulic cylinder.

Preferably, the rotation assembly comprises a second rotating shaft, a large gear, a small gear, a supporting plate, a fixed rod, a second motor, a main gear and a slave gear; a second rotating shaft is vertically arranged between the middle position of the lower surface of the pressing plate and a circular area surrounded by the upper cover, and the upper end of the second rotating shaft is rotationally connected with the lower surface of the pressing plate through a bearing; a pinion is sleeved and fixed at the middle position of the outer circumferential surface of each upper cover in a coaxial way, and each pinion is arranged in the same horizontal plane; a large gear is sleeved and fixed on the second rotating shaft at the position opposite to the small gear in a coaxial manner, the large gear is meshed with each small gear respectively, and then each upper cover is driven to rotate around the corresponding extraction tube through meshing cooperation of the large gear and the small gears along with rotation of the second rotating shaft, and the upper cover is driven to rotate through the upper cover; a supporting plate is sleeved on the second rotating shaft relative to the position right below the large gear, the second rotating shaft is rotationally connected with the supporting plate through a bearing, four fixing rods are vertically and symmetrically arranged at four right angles on the upper surface of the supporting plate, each fixing rod is fixedly connected with the corresponding position of the lower surface of the pressing plate, and the fixing rods are ensured not to interfere the rotation of the large gear; the secondary gear is sleeved and fixed on the second rotating shaft relative to the right side of the main gear, the lower surface of the supporting plate is further vertically provided with a second motor relative to the right side of the main gear, the output end of the second motor is downwards arranged and is meshed and connected with the secondary gear through the main gear, and the second rotating shaft is driven to axially rotate around the secondary gear.

The utility model has the beneficial effects that:

(1) According to the utility model, under the drive of the second motor, the second rotating shaft is driven to rotate through the meshing cooperation of the main gear and the auxiliary gear, and then the synchronous rotation of the upper cover is realized through the meshing cooperation of the large gear and the small gear, so that the extraction pipe can be driven to synchronously rotate when the upper cover is sleeved with the corresponding extraction pipe, the stability of oscillation mixing of a sample and dichloromethane is ensured, and the phenomenon of toppling is avoided;

(2) According to the utility model, under the drive of the third motor, through the meshing and matching of the main bevel gear and the auxiliary bevel gear, the sequential addition of samples and methylene dichloride to a plurality of extraction pipes can be realized, the time and the labor are saved, the oscillation of a plurality of samples can be realized at one time, and the efficiency is improved;

(3) The utility model adopts the integrated design of sample crushing and drying, saves time and labor and improves the pretreatment efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a sample pretreatment apparatus for detecting hexabromododecane harmful gas according to the present utility model.

Fig. 2 is a schematic view of the structure of the rotating assembly of fig. 1.

FIG. 3 is a schematic diagram showing the structure of the extraction tube in the autorotation state.

Wherein, 1-left shell; 2-right shell; 3-feeding pipe; 4-a first motor; 5-a first rotating shaft; 6-a main crushing cutter; 7-auxiliary crushing teeth; 8-a deflector; 9-a first electric push rod; 10-a second electric push rod; 11-tiling brushes; 12-connecting rod; 13-a reinforcing bar; 14-drying the plate; 15-a first telescopic tube; 16-a second telescopic tube; 17-a hydraulic cylinder; 18-pressing plates; 19-an upper cover; 20-pinion gear; 21-a second rotating shaft; 22-large gear; 23-supporting plates; 24-fixing rod; 25-a second motor; 26-a main gear; 27-a slave gear; 28-a fixed plate; 29-a third spindle; 30-side plates; 31-a third motor; 32-a main bevel gear; 33-slave bevel gears; 34-a turntable; 35-a roller; 36-sleeve; 37-extraction tube.

Description of the embodiments

The technical scheme of the present utility model will be clearly and completely described in the following detailed description.

The utility model relates to a sample pretreatment device for detecting hexabromododecane harmful gas, which comprises a left shell 1, a right shell 2, a crushing assembly, a tiling assembly, a rotating assembly, a lifting assembly and a autorotation assembly; the concrete structure is shown in fig. 1-3, a left shell 1 and a right shell 2 are horizontally arranged side by side left and right, are integrally formed, and are vertically communicated with a feed pipe 3 on the upper surface of the left shell 1; the inside of the left shell 1 is also provided with a crushing assembly, a guide plate, a tiling assembly and a drying plate 14 at intervals from top to bottom in sequence, and samples are tiling on the drying plate 14 for drying after being crushed by the crushing assembly.

As shown in fig. 1, the guide plate has a rectangular structure matched with the inside of the left shell 1, and four peripheral sides of the guide plate are fixedly connected with corresponding inner sides of the left shell 1 respectively; the upper surface of the guide plate is also provided with an inclined surface, the inclined surface is inclined downwards left from the edge of the right end of the upper surface of the guide plate, then is inclined upwards when approaching the left inner side surface of the left shell 1, and is fixedly connected with the left inner side surface of the left shell 1 in a sealing way, so that a funnel shape is formed, and a crushed sample is guided; the bending part of the guide plate is also embedded with a first electromagnetic valve for controlling the on-off of the guide plate, and then the crushed sample is conveyed to the drying plate 14 through the first electromagnetic valve.

The crushing assembly is arranged right above the guide plate at intervals and comprises a first motor 4, a first rotating shaft 5, a main crushing cutter 6 and auxiliary crushing teeth 7; as shown in fig. 1, a first motor 4 is horizontally and horizontally arranged at an upper position of the left outer side surface of the left shell 1, the output end of the first motor 4 horizontally extends into the left shell 1 and is connected with the left end of a first rotating shaft 5 horizontally and horizontally in a coaxial linkage manner, and the right end of the first rotating shaft 5 is rotationally connected with the right inner side corresponding position of the left shell 1; a plurality of crushing layers are vertically arranged on the outer circumferential surface of the first rotating shaft 5 at intervals from left to right in sequence, a plurality of main crushing cutters 6 are uniformly distributed in each crushing layer along the circumferential direction of the crushing layers at intervals, each main crushing cutter 6 is obliquely arranged in parallel, one end of each main crushing cutter 6 is fixedly connected with the first rotating shaft 5, and the other end of each main crushing cutter is arranged in non-interference with the inner top surface of the left shell 1 and a guide plate; a plurality of auxiliary crushing teeth 7 are uniformly distributed on each main crushing cutter 6 at intervals, and the auxiliary crushing teeth 7 on the adjacent main crushing cutters 6 are arranged in a non-interference way. The utility model is driven by the first motor 4, the main crushing cutter 6 and the auxiliary crushing teeth 7 rotate along with the first rotating shaft 5, and the samples entering through the feed pipe 3 are crushed.

The drying plate 14 is of a rectangular structure matched with the inside of the left shell 1, and four peripheral side surfaces of the drying plate are respectively and fixedly connected with the corresponding inner side surfaces of the left shell 1 in a sealing way; as shown in fig. 1 and 3, a first telescopic pipe 15 is also obliquely embedded in the right side surface of the left shell 1 at a position corresponding to the leftmost extraction pipe 37, and the left end of the first telescopic pipe 15 is arranged at the right end of the upper surface of the drying plate 14 and is communicated with the inside of the left shell 1; the telescopic end of the first telescopic tube 15 is inclined downwards towards the upper end direction of the leftmost extraction tube 37, and a second electromagnetic valve for controlling the on-off of the first telescopic tube is further arranged in the first telescopic tube, so that the dried sample is sequentially conveyed into the corresponding extraction tube 37 which is rotated to the leftmost side by the rotating assembly, and the telescopic end of the first telescopic tube is required to be ensured to retract to the limit position, and the pressing action of the upper cover 19 is not interfered.

The tiling assembly comprises a first electric push rod 9, a second electric push rod 10, a tiling brush 11, a connecting rod 12, a reinforcing rod 13 and a sliding block; as shown in fig. 1, two first electric push rods 9 are horizontally and transversely screwed at intervals between the left outer side surface of the left shell 1 and the guide plate and the drying plate 14, and the actions of the two first electric push rods 9 are synchronous; a reinforcing rod 13 is obliquely arranged between the tail part of each first electric push rod 9 and the left outer side surface of the left shell 1, and the corresponding first electric push rods 9 are reinforced and fixed through the reinforcing rods 13; the telescopic end of each first electric push rod 9 horizontally extends into the left shell 1 and is fixedly connected with the tail part of the corresponding second electric push rod 10 which is vertically arranged, so that the corresponding second electric push rod 10 is respectively driven to horizontally and transversely move in the left shell 1; a connecting rod 12 is further vertically arranged at the tail part of each second electric push rod 10, and the upper end of each connecting rod 12 is horizontally and transversely connected with the lower surface of the guide plate in a sliding manner through a sliding block respectively, and the blanking action of the first electromagnetic valve is not influenced respectively; the action of the two second electric push rods 10 is synchronous, and the telescopic ends of the two second electric push rods are vertically arranged downwards and are respectively connected with the fixed ends of the flat brushes 11; the spreading brush 11 is matched with the width of the drying plate 14, and its cleaning end is disposed toward the drying plate 14 and contacts the upper surface of the drying plate 14. According to the utility model, through the cooperation of the first electric push rod 9 and the second electric push rod 10, the spreading brush 11 horizontally and transversely moves, a crushed sample is spread on the drying plate 14 for drying, and meanwhile, the dried sample can be pushed to the first telescopic pipe 15 through the spreading brush 11.

The utility model is also horizontally provided with a round rotary table 34 in the right shell 2 relative to the lower part of the drying plate 14, and the rotary table 34 horizontally rotates through a rotating component; as shown in fig. 1-3, a plurality of sleeves 36 are vertically arranged on the upper surface of the turntable 34 near the edge thereof at intervals in sequence along the circumferential direction, and each sleeve 36 is respectively and rotatably connected with the turntable 34 through a bearing; the upper end of each sleeve 36 is also vertically and coaxially sleeved with an extraction tube 37, an upper cover 19 matched with the right shell 2 is further arranged right above each extraction tube 37, each upper cover 19 vertically moves up and down through a lifting assembly, and the corresponding extraction tubes 37 are driven to rotate and oscillate through a autorotation assembly after the upper ends of the corresponding extraction tubes 37 are respectively sealed.

As shown in fig. 1 and 3, a second telescopic tube 16 is also obliquely embedded in the right side surface of the right shell 2 at a position corresponding to the rightmost extraction tube 37, and the right end of the second telescopic tube 16 extends upwards obliquely to the right outer side surface of the right shell 2; the telescopic end of the second telescopic tube 16 is inclined downwards towards the upper end direction of the rightmost extraction tube 37, and a third electromagnetic valve for controlling the on-off of the second telescopic tube is further arranged in the second telescopic tube, so that dichloromethane is sequentially conveyed into the corresponding extraction tube 37 which is rotated to the rightmost side by the rotating assembly, and the telescopic end of the second telescopic tube is required to be ensured to retract to the limit position, and the pressing action of the upper cover 19 is not interfered.

The rotating assembly of the utility model comprises a fixed plate 28, a side plate 30, a third motor 31, a main bevel gear 32, a secondary bevel gear 33, a third rotating shaft 29 and a roller 35; as shown in fig. 1 and 3, a fixing plate 28 matched with the inside of the right shell 2 is horizontally fixed right below the turntable 34 in the right shell 2, and a side plate 30 matched with the inside of the right shell 2 is vertically and longitudinally fixed right between the fixing plate 28 and the inner bottom surface of the right shell 2; a third rotating shaft 29 is vertically arranged at the inner middle position of the right shell 2 relative to the left side of the side plate 30 in a coaxial manner, the lower end of the third rotating shaft 29 is rotationally connected with the inner bottom surface of the right shell 2, and the upper end of the third rotating shaft 29 vertically extends upwards to extend out of the upper surface of the fixed plate 28, is fixedly connected with the lower surface of the turntable 34 in a coaxial manner and is rotationally connected with the fixed plate 28; a slave bevel gear 33 is sleeved and fixed on the third rotating shaft 29 relative to the right lower part of the fixed plate 28, and the slave bevel gear 33 is arranged in a non-interference manner with the right shell 2, the left shell 1, the fixed plate 28 and the side plate 30 respectively; a third motor 31 is horizontally arranged at intervals from the right side of the bevel gear 33, the fixed end of the third motor 31 is fixedly connected with the left side surface of the side plate 30 in a threaded manner, the output end of the third motor is horizontally arranged towards the direction of the bevel gear 33, and is in meshed connection with the bevel gear 33 through a main bevel gear 32, so that the third rotating shaft 29 is driven to rotate along the axial direction of the third rotating shaft, and the turntable 34 is driven to rotate in the horizontal direction;

as shown in fig. 1 and 3, a circle of rollers 35 abutting against the lower surface of the turntable 34 is further connected to the upper surface of the fixed plate 28, and the circle of rollers 35 and the third rotating shaft 29 are coaxially arranged and are respectively arranged in a non-interference manner with the third rotating shaft 29; each roller 35 is tapered and has a small end near the third shaft 29 and a large end at its other end to accommodate the smaller linear velocity near the third shaft 29 when the turntable 34 rotates.

The lifting assembly comprises a hydraulic cylinder 17 and a pressing plate 18; as shown in fig. 1-3, a hydraulic cylinder 17 is further vertically arranged in the middle of the upper surface of the right housing 2, and a piston rod of the hydraulic cylinder 17 vertically extends downwards to the inside of the right housing 2 and is in threaded connection with the upper surface of a horizontally arranged pressing plate 18, so that the pressing plate 18 is driven to vertically move up and down in the right housing 2; the pressing plate 18 is of a circular structure, all the upper covers 19 are arranged on the lower surface of the pressing plate 18 in a circular coaxial mode, are respectively connected with the pressing plate 18 in a rotating mode through bearings, and further the lower half portions of the upper covers 19 are in sealing and sleeving connection with the upper ends of the corresponding extraction pipes 37 under the driving of the hydraulic cylinders 17.

The autorotation assembly comprises a second rotating shaft 21, a large gear 22, a small gear 20, a supporting plate 23, a fixed rod 24, a second motor 25, a main gear 26 and a slave gear 27; as shown in fig. 1-3, a second rotating shaft 21 is further vertically arranged between the middle position of the lower surface of the pressing plate 18 and the circular area surrounded by the upper cover 19, and the upper end of the second rotating shaft 21 is rotationally connected with the lower surface of the pressing plate 18 through a bearing; pinion gears 20 are also sleeved and fixed coaxially in the middle of the outer circumferential surface of each upper cover 19, and each pinion gear 20 is arranged in the same horizontal plane; a large gear 22 is also sleeved and fixed on the second rotating shaft 21 at the position corresponding to the small gears 20 in a coaxial manner, the large gear 22 is respectively meshed with each small gear 20, and then each upper cover 19 is driven to respectively rotate around the axial direction of the upper cover 19 through the meshing cooperation of the large gear 22 and the small gears 20 along with the rotation of the second rotating shaft 21, and the corresponding extraction tube 37 is driven to rotate through the upper cover 19;

as shown in fig. 1-3, a supporting plate 23 is also coaxially sleeved on the second rotating shaft 21 relative to the right lower part of the large gear 22, the second rotating shaft 21 is rotationally connected with the supporting plate 23 through a bearing, four fixing rods 24 are also vertically and symmetrically arranged at four right angles on the upper surface of the supporting plate 23, each fixing rod 24 is fixedly connected with the corresponding position of the lower surface of the pressing plate 18, and the fixing rods 24 are ensured not to interfere the rotation of the large gear 22; the secondary gear 27 is also sleeved and fixed on the second rotating shaft 21 relative to the right side of the main gear 26, and the lower surface of the supporting plate 23 is also vertically provided with the second motor 25 relative to the right side of the main gear 26, and the output end of the second motor 25 is downwards arranged and is meshed with the secondary gear 27 through the main gear 26, and drives the second rotating shaft 21 to rotate around the axial direction of the second motor.

The working principle of the utility model is as follows: firstly, a sample enters the left shell 1 through the feed pipe 3, is crushed by the crushing assembly, and is tiled on the drying plate 14 by the tiling assembly for drying; then pushing the dried sample to the first telescopic pipe 15 through the tiling assembly, at this time, the telescopic end of the first telescopic pipe 15 extends to the upper end close to the leftmost extraction pipe 37, and the dried sample is sequentially conveyed into the corresponding extraction pipe 37 under the drive of the rotating assembly; meanwhile, the telescopic end of the second telescopic pipe 16 stretches to the upper end close to the rightmost extraction pipe 37, and dichloromethane is sequentially conveyed into the corresponding extraction pipe 37 under the drive of the rotating assembly; after the sample and the dichloromethane are filled in the extraction tube 37, the telescopic ends of the first telescopic tube 15 and the second telescopic tube 16 are retracted to the limit positions, and then the lower half part of the upper cover 19 is respectively and hermetically sleeved with the upper end of the corresponding extraction tube 37 under the driving of the hydraulic cylinder 17; then, the second rotating shaft 21 rotates around its own axis under the driving of the second motor 25, and drives each extraction tube 37 to rotate through the engagement of the large gear 22 and the small gear 20, so that the sample and the dichloromethane are mixed in an oscillating manner, and the subsequent detection can be performed.

The utility model has the beneficial effects that:

(1) Under the drive of the second motor 25, the second rotating shaft 21 is driven to rotate through the meshing fit of the main gear 26 and the auxiliary gear 27, and then the synchronous rotation of the upper cover 19 is realized through the meshing fit of the large gear 22 and the small gear 20, so that the extraction pipe 37 can be driven to synchronously rotate when the upper cover 19 is sleeved with the corresponding extraction pipe 37, the stability of oscillation mixing of a sample and dichloromethane is ensured, and the phenomenon of dumping is avoided;

(2) According to the utility model, under the drive of the third motor 31, through the meshing and matching of the main bevel gear 32 and the auxiliary bevel gear 33, the sequential addition of samples and methylene dichloride to the plurality of extraction pipes 37 can be realized, so that time and labor are saved, the oscillation of a plurality of samples can be realized at one time, and the efficiency is improved;

(3) The utility model adopts the integrated design of sample crushing and drying, saves time and labor and improves the pretreatment efficiency.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model, and the present utility model is not limited to the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the design concept of the present utility model should fall within the protection scope of the present utility model, and the claimed technical content of the present utility model is fully described in the claims.

Claims (10)

1. The utility model provides a hexabromododecane harmful gas detects and uses sample preprocessing device which characterized in that: the device comprises a left shell, a right shell, a crushing assembly, a tiling assembly, a rotating assembly, a lifting assembly and a autorotation assembly; the left shell and the right shell are horizontally arranged in parallel left and right, integrally formed, and vertically communicated with each other on the upper surface of the left shell and provided with a feed pipe; the inside of the left shell is also provided with a crushing assembly, a guide plate, a tiling assembly and a drying plate at intervals from top to bottom in sequence, and samples are tiling on the drying plate for drying through the tiling assembly after being crushed by the crushing assembly; a round rotary table is horizontally arranged in the right shell relative to the lower part of the drying plate, and the rotary table horizontally rotates through a rotating assembly; a plurality of sleeves are vertically arranged on the upper surface of the turntable near the edge of the turntable at intervals in sequence along the circumferential direction of the turntable, and each sleeve is respectively and rotatably connected with the turntable through a bearing; the upper end of each sleeve is also vertically and coaxially sleeved with an extraction pipe, an upper cover matched with the right shell is further arranged right above each extraction pipe, each upper cover vertically moves up and down through a lifting assembly, and then the upper ends of the extraction pipes are respectively sealed, and the extraction pipes are driven to rotate and oscillate through a autorotation assembly.

2. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 1, wherein: the guide plate is of a rectangular structure matched with the inside of the left shell, and four peripheral side surfaces of the guide plate are fixedly connected with corresponding inner side surfaces of the left shell respectively; the upper surface of the guide plate is also provided with an inclined surface, the inclined surface is inclined downwards left from the edge of the right end of the upper surface of the guide plate, then is inclined upwards when approaching the left inner side surface of the left shell, and is fixedly connected with the left inner side surface of the left shell in a sealing way, so that a funnel shape is formed, and a crushed sample is guided; the bending part of the guide plate is also embedded with a first electromagnetic valve for controlling the on-off of the guide plate, and then the crushed sample is conveyed to the drying plate through the first electromagnetic valve.

3. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 2, wherein: the crushing assembly is arranged right above the guide plate at intervals and comprises a first motor, a first rotating shaft, a main crushing cutter and auxiliary crushing teeth; a first motor is horizontally and transversely arranged at the position, above the left outer side surface of the left shell, the output end of the first motor horizontally extends to the inside of the left shell and is connected with the left end of the first rotating shaft horizontally and transversely in a coaxial linkage manner, and the right end of the first rotating shaft is rotationally connected with the right inner side surface corresponding position of the left shell; a plurality of crushing layers are vertically arranged on the outer circumferential surface of the first rotating shaft at intervals from left to right in sequence, a plurality of main crushing cutters are uniformly distributed in each crushing layer along the circumferential direction of the crushing layers at intervals in an inclined manner, each main crushing cutter is obliquely arranged in parallel, one end of each main crushing cutter is fixedly connected with the first rotating shaft, and the other end of each main crushing cutter is arranged in a non-interference manner with the inner top surface of the left shell and the guide plate; the main crushing cutter is characterized in that a plurality of auxiliary crushing teeth are further uniformly distributed on each main crushing cutter at intervals, and the auxiliary crushing teeth on the adjacent main crushing cutters are arranged in a non-interference manner, so that under the drive of a first motor, the main crushing cutters and the auxiliary crushing teeth rotate along with a first rotating shaft, and a sample entering through a feeding pipe is crushed.

4. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 2, wherein: the drying plate is of a rectangular structure matched with the inside of the left shell, and four peripheral side surfaces of the drying plate are respectively and fixedly connected with the corresponding inner side surfaces of the left shell in a sealing manner.

5. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 1, wherein: a first telescopic pipe is obliquely embedded in the right side surface of the left shell relative to the position of the leftmost extraction pipe, and the left end of the first telescopic pipe is arranged at the right end of the upper surface of the drying plate and is communicated with the inside of the left shell; the telescopic end of the first telescopic pipe is inclined downwards towards the upper end direction of the leftmost extraction pipe, a second electromagnetic valve for controlling the on-off of the first telescopic pipe is further arranged in the first telescopic pipe, and further the dried sample is sequentially conveyed into the corresponding extraction pipe which is rotated to the leftmost side through the rotating assembly, and when the telescopic end of the first telescopic pipe is required to be retracted to the limit position, the pressing action of the upper cover is not interfered.

6. The sample pretreatment apparatus for detecting a harmful gas of hexabromododecane according to claim 5, wherein: the tiling assembly comprises a first electric push rod, a second electric push rod, a tiling brush, a connecting rod, a reinforcing rod and a sliding block; two first electric push rods are horizontally and transversely screwed at intervals between the left outer side surface of the left shell and the guide plate and the drying plate, and the actions of the two first electric push rods are synchronous; a reinforcing rod is obliquely arranged between the tail part of each first electric push rod and the left outer side surface of the left shell, and the corresponding first electric push rods are reinforced and fixed through the reinforcing rods; the telescopic end of each first electric push rod horizontally extends into the left shell and is fixedly connected with the tail part of the corresponding second electric push rod which is vertically arranged, so that the corresponding second electric push rod is respectively driven to horizontally and transversely move in the left shell; a connecting rod is further vertically arranged at the tail part of each second electric push rod, and the upper end of each connecting rod is horizontally and transversely connected with the lower surface of the guide plate in a sliding manner through a sliding block respectively, and the blanking action of the first electromagnetic valve is not influenced respectively; the action of the two second electric push rods is synchronous, and the telescopic ends of the two second electric push rods are vertically arranged downwards and are respectively connected with the fixed ends of the tiling brushes; the width of the tiling brush is matched with that of the drying plate, and the cleaning end of the tiling brush is arranged towards the direction of the drying plate and is contacted with the upper surface of the drying plate; through the cooperation of first electric putter and second electric putter, the tiling brush carries out horizontal lateral shifting, and the sample tiling after smashing is dried on the desiccator, and the sample after the accessible tiling brush is pushed to first flexible pipe department simultaneously.

7. The sample pretreatment apparatus for detecting a harmful gas of hexabromododecane according to claim 5, wherein: a second telescopic pipe is obliquely embedded in the position of the right side surface of the right shell relative to the rightmost extraction pipe, and the right end of the second telescopic pipe extends upwards obliquely to the right outer side surface of the right shell; the telescopic end of the second telescopic pipe stretches downwards in an inclined mode towards the upper end direction of the rightmost extraction pipe, a third electromagnetic valve for controlling the connection and disconnection of the second telescopic pipe is further arranged in the second telescopic pipe, dichloromethane is sequentially conveyed into the corresponding extraction pipe which rotates to the rightmost side through the rotating assembly, and when the telescopic end of the second telescopic pipe is required to be retracted to the limit position, interference is not generated on the pressing action of the upper cover.

8. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 1, wherein: the rotating assembly comprises a fixed plate, a side plate, a third motor, a main bevel gear, a secondary bevel gear, a third rotating shaft and a roller; a fixed plate matched with the inside of the right shell is also horizontally and fixedly arranged in the right shell relative to the right lower part of the turntable, and a side plate matched with the fixed plate is also vertically and longitudinally fixed between the right shell and the inner bottom surface of the right shell relative to the fixed plate; a third rotating shaft is further arranged at the middle position in the right shell in a coaxial manner relative to the left side of the side plate, the lower end of the third rotating shaft is rotatably connected with the inner bottom surface of the right shell, and the upper end of the third rotating shaft vertically extends upwards to the upper surface of the fixed plate, is fixedly connected with the lower surface of the turntable in a coaxial manner, and is rotatably connected with the fixed plate; a slave bevel gear is sleeved and fixed on the third rotating shaft relative to the right lower part of the fixed plate in a coaxial manner, and the slave bevel gear is arranged in a non-interference manner with the right shell, the left shell, the fixed plate and the side plate respectively; a third motor is arranged at the right side of the secondary bevel gear at a horizontal interval, the fixed end of the third motor is fixedly connected with the left side surface of the side plate in a threaded manner, the output end of the third motor is horizontally arranged towards the direction of the secondary bevel gear, and the third motor is meshed and connected with the secondary bevel gear through a main bevel gear to drive a third rotating shaft to rotate along the axial direction of the third rotating shaft, so that the turntable is driven to rotate in the horizontal direction; the upper surface of the fixed plate is also connected with a circle of rollers which are abutted against the lower surface of the turntable, and the circle of rollers are coaxially arranged with the third rotating shaft and are respectively arranged without interference with the third rotating shaft; each roller is conical, and one end of the roller, which is close to the third rotating shaft, is a small end, and the other end of the roller is a large end, so that the linear speed of the roller, which is close to the third rotating shaft when the turntable rotates, is smaller.

9. The sample pretreatment apparatus for detecting a harmful hexabromododecane gas according to claim 1, wherein: the lifting assembly comprises a hydraulic cylinder and a pressing plate; a hydraulic cylinder is further vertically arranged in the middle of the upper surface of the right shell, a piston rod of the hydraulic cylinder vertically extends downwards to the inside of the right shell and is in threaded connection with the upper surface of the pressing plate which is horizontally arranged, so that the pressing plate is driven to vertically move up and down in the right shell; the pressing plate is of a circular structure, all the upper covers are arranged on the lower surface of the pressing plate in a circular coaxial mode, and are respectively connected with the pressing plate in a rotating mode through bearings, and then the lower half portion of the upper cover is in sealing and sleeving connection with the upper end of the corresponding extraction pipe under the driving of the hydraulic cylinder.

10. The sample pretreatment apparatus for detecting a harmful gas of hexabromododecane according to claim 9, wherein: the self-rotation assembly comprises a second rotating shaft, a large gear, a small gear, a supporting plate, a fixed rod, a second motor, a main gear and a slave gear; a second rotating shaft is vertically arranged between the middle position of the lower surface of the pressing plate and a circular area surrounded by the upper cover, and the upper end of the second rotating shaft is rotationally connected with the lower surface of the pressing plate through a bearing; a pinion is sleeved and fixed at the middle position of the outer circumferential surface of each upper cover in a coaxial way, and each pinion is arranged in the same horizontal plane; a large gear is sleeved and fixed on the second rotating shaft at the position opposite to the small gear in a coaxial manner, the large gear is meshed with each small gear respectively, and then each upper cover is driven to rotate around the corresponding extraction tube through meshing cooperation of the large gear and the small gears along with rotation of the second rotating shaft, and the upper cover is driven to rotate through the upper cover; a supporting plate is sleeved on the second rotating shaft relative to the position right below the large gear, the second rotating shaft is rotationally connected with the supporting plate through a bearing, four fixing rods are vertically and symmetrically arranged at four right angles on the upper surface of the supporting plate, each fixing rod is fixedly connected with the corresponding position of the lower surface of the pressing plate, and the fixing rods are ensured not to interfere the rotation of the large gear; the secondary gear is sleeved and fixed on the second rotating shaft relative to the right side of the main gear, the lower surface of the supporting plate is further vertically provided with a second motor relative to the right side of the main gear, the output end of the second motor is downwards arranged and is meshed and connected with the secondary gear through the main gear, and the second rotating shaft is driven to axially rotate around the secondary gear.