CN114100814A

CN114100814A - Sealed crushing and screening machine

Info

Publication number: CN114100814A
Application number: CN202111410181.1A
Authority: CN
Inventors: 王哲; 王章丞
Original assignee: Shenyang Shangyida Technology Co ltd
Current assignee: Shenyang Shangyida Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-03-01
Anticipated expiration: 2041-11-25
Also published as: CN114100814B

Abstract

The invention relates to a sealed crushing and screening machine, wherein an automatic feeder of the crushing and screening machine is communicated with a feeding end of a crushing part, a discharging end of the crushing part is communicated with a vibrating screen part through flexible connection, and the crushing part and the vibrating screen part are fixed on a frame body. The invention solves the problems that the prior crushing and screening machine can not realize continuous packing, and the crushing, screening and sample loading processes can not effectively isolate air, thereby causing inaccurate sample detection result and large error.

Description

Sealed crushing and screening machine

Technical Field

The invention relates to the technical field of screening machines, in particular to a sealed crushing screening machine.

Background

In the past, most samples for physical and chemical property analysis in a laboratory are blocky solids with different sizes, and most of the samples need to be in powder states with different particle sizes during the physical and chemical property analysis, so that the samples need to be firstly crushed after the samples need to be analyzed in the laboratory, and the samples need to be separated into powder with different particle sizes through a screening mechanism, and the samples are convenient to analyze and use by different analytical instruments. In the crushing and screening processes, the prior machines are not integrated, and can not isolate oxygen or specific harmful gases in the whole process, the comminution and screening needs to be performed on two machines, and the sample needs to be transferred between the two machines, because the surface area of the sample is increased sharply after the sample is crushed, some samples which are easy to decompose and oxidize are already deteriorated in the crushing and screening sample preparation processes, particularly, the crushing process is accompanied by the phenomenon of heating, the deterioration is further aggravated, the actual physical and chemical properties are changed, the actual performance indexes of the sample cannot be obtained through subsequent analysis, some laboratories are isolated by some additives or soaking methods, but the effects are not ideal, the secondary pollution is caused, the cost is high, meanwhile, the workload of the sample preparation process and the difficulty of sample preparation are increased, and the requirement on the operation level of a sample preparation worker is high.

All need use the rubbing crusher at kibbling in-process, the rubbing crusher has a variety, but the small-size rubbing crusher type that is fit for the laboratory to use is not many, generally can use in the laboratory and can not change the rubbing crusher of sample physical and chemical properties's main mechanical crusher, wherein smash more meticulous rubbing crusher and use hammer mill and blade crusher as the main, the two respectively has the advantage shortcoming, but the two can not pack in succession at kibbling in-process, the unable isolated oxygen of sampling process, prevent oxidation, also can't control the accurate range of smashing the granularity, kibbling granularity is controlled by the length of time, the different samples are smashed and to the time that equal granularity needs can have very big difference.

Because different analytical instruments have different requirements on the granularity of a sample, after the crushing of the crusher is completed, the crushing machine generally needs to perform a screening process to separate samples with different granularities or screen samples with required granularity, and in the screening process, the crushing machine is provided with a screening machine capable of isolating oxygen in the whole process and a closed screening machine capable of continuously feeding materials.

In the previous crushing and screening processes, a small amount of sample dust can flow out of the sample preparation chamber, especially some samples have toxic action and are harmful to sample preparation personnel, and the sample preparation chamber and all devices in the sample preparation chamber can be polluted, so that the sample preparation work becomes a high-risk occupation, different samples have different physical properties, the crushed granularity in the crushing process basically depends on the experience of the sample preparation personnel, the crushing efficiency is low as a result, the sample preparation period is long, the waste is large, and the sample preparation difficulty is large for samples which are short in time, various and large in sample quantity.

The cleaning work after each sample is used is also a cumbersome work for the common equipment. Because a lot of sample preparation processes in a laboratory are completed by the laboratory, the sample preparation difficulty becomes larger, the sample preparation efficiency is lower, the period is longer, the cost is higher, the physicochemical properties of the sample can be changed in the sample preparation process, and the final analysis result is influenced, so the sample preparation process is simplified, the sample preparation difficulty is reduced, and meanwhile, the whole-process closed sample preparation process is more important for reducing the contact between the sample and harmful gas components.

In conclusion, the existing crushing and screening machine cannot realize continuous packing, and the processes of crushing, screening and sample loading cannot effectively isolate air, so that the sample detection result is inaccurate and the error is large.

Disclosure of Invention

The purpose of the invention is as follows: the invention provides a sealed crushing and screening machine, which aims to solve the problems that the conventional crushing and screening machine cannot realize continuous packing, and air cannot be effectively isolated in the crushing, screening and sample loading processes, so that the sample detection result is inaccurate and the error is large.

The technical scheme is as follows:

the utility model provides a sealed crushing and screening machine, this crushing and screening machine's automatic feed ware and the feed end intercommunication of crushing portion, the discharge end of crushing portion passes through flexible coupling and shakes sieve portion intercommunication, and crushing portion and shake sieve portion are fixed in on the support body.

Furthermore, the automatic feeder comprises a sample injector main body, a lower supporting plate, an upper cover, a first backpressure exhaust valve, an annular groove sealing ring and a rotary driving system, wherein the sample injector main body is of a cavity structure with at least two partitions, the first backpressure exhaust valve is arranged in one partition, the upper part and the lower part of the partition are closed sealed cavity structures, other partitions are used for placing samples to be crushed, the partition for placing the samples to be crushed is a structure with an upper part and a lower part both open, and the sample injector main body, the lower supporting plate arranged below the sample injector main body and the upper cover arranged above the sample injector main body can form a closed cavity structure; a rotating shaft of the rotary driving system penetrates through the lower supporting plate and is clamped with the sample injector main body, the rotary driving system is supported by a bearing on the lower supporting plate, and an annular groove sealing ring is arranged between the lower supporting plate and the sample injector main body; the lower supporting plate is provided with a feeding hole, the size of the lower surface of the partition where the first backpressure exhaust valve is located can completely cover the feeding hole, the contact part of the partition where the first backpressure exhaust valve is located and the lower supporting plate is provided with a sealing ring, the feeding hole of the lower supporting plate is fixedly connected with one end of a connecting pipe, and the other end of the connecting pipe is fixedly connected with the crushing part.

Furthermore, the crushing part comprises a crushing motor, a shell, an adjustable gland, a spiral crushing body, a movable grinding disc, a fixed grinding disc and a fixed crushing tooth-shaped sleeve, the crushing motor is fixed on the frame body, the end part of the crushing motor is fixedly and hermetically connected with the shell, a primary crushing area and a secondary crushing area are arranged in the shell, the primary crushing area is communicated with the lower end of the connecting pipe, the spiral crushing body and the fixed crushing tooth-shaped sleeve are arranged in the primary crushing area, the spiral crushing body is clamped with an output shaft of the crushing motor, and the fixed crushing tooth-shaped sleeve is fixedly arranged on the end surface of the inner wall of the primary crushing area; the secondary crushing area is internally provided with a movable grinding disc and a fixed grinding disc, the fixed grinding disc is fixedly arranged on the inner end surface of the shell, the movable grinding disc is arranged at the end part of the spiral crusher, the adjustable pressure cover covers the opening part of the shell to form sealing, the adjustable pressure cover is fixedly connected with the movable grinding disc, and the secondary crushing area is communicated with the vibrating screen part through a flexible connecting pipe.

Further, the vibrating screen part comprises a vibrating motor, a screen frame, a locking device, a special screen disc, a screen disc seat, a swinging arm, a rotating disc and a swinging arm limiting seat, a sample loading interface is arranged on an upper plate of the screen frame, the vibrating motor is arranged on the screen frame, the screen frame is internally provided with a plurality of special screen discs which are sequentially hermetically clamped, the screen disc seat is hermetically clamped below the special screen disc at the lowest layer, discharge ports are arranged on the special screen disc and the screen disc seat, and the locking device is arranged at the lower part of the screen frame; the rotating part of the rotating disc is fixedly connected with the sieve frame, the fixed part of the rotating disc is fixedly connected with one end, close to the sieve frame, of the swing arm, the other end of the swing arm penetrates through the swing arm limiting seat and is hinged to one side, far away from the sieve frame, of the frame body, and the swing arm limiting seat is fixed to one side, close to the sieve frame, of the frame body.

Furthermore, the special sieve tray comprises a sieve tray frame, a middle sealing ring and a sieve screen, the sieve tray frame is of an annular structure with an upper opening and a lower opening, the middle sealing ring is arranged below the sieve tray frame, the sieve screen is fixedly arranged on the middle sealing ring in an integrated mode, and a discharge hole is fixed on the side wall of the sieve tray frame.

Further, the sieve tray seat is a bowl-shaped structure with an opening at the upper part, an intermediate sealing ring is mounted below the special sieve tray layer on the sieve tray seat along the clamping connection, an exhaust filtering device with a porous side wall is integrally arranged on the bottom surface in the sieve tray seat, a porous wall plate of the exhaust filtering device is mounted on the bottom surface in the sieve tray seat 35, a conical cover is fixed on the porous wall plate, an exhaust pipe is arranged in the porous wall plate, the end part of the exhaust pipe penetrates out of the sieve tray seat and is communicated with a second backpressure exhaust valve, filter cotton is filled in the porous wall plate of the exhaust filtering device, a discharge port is fixed on the side wall of the sieve tray seat, and the exhaust pressure of the second backpressure exhaust valve is greater than that of the first backpressure exhaust valve.

Furthermore, the discharge port is a structure that the end faces of two flanges with neck flanges are connected with bolts relatively, one end of the discharge port is installed on the side wall of the sieve tray frame or the sieve tray seat, the other end of the discharge port is provided with an internal thread sealing interface, and a sealing valve is installed between the two flanges of the discharge port.

Further, the connecting pipe is a three-way pipe, an inclined pipe with an included angle of 45 degrees is integrally welded on the straight pipe, the upper end of the straight pipe is communicated with the sample injector main body, and the lower end of the straight pipe is welded and communicated with the crushing part; the inclined tube is communicated with the cleaning and drying system.

Further, the cleaning and drying system comprises an atomizing spray head, a drying fan, a drying heater and an air valve, wherein the cleaning nozzle is arranged on the upper portion of the straight pipe and is externally connected with the atomizing spray head, the air valve is arranged on the inclined pipe, and the end portion of the inclined pipe is sequentially connected with the drying heater and the drying fan of the cleaning and drying system.

Furthermore, a protective gas inflation joint is also arranged on the straight pipe.

Has the advantages that:

the crushing and screening integrated machine mainly comprises an automatic feeder capable of continuously feeding samples, a mechanical crushing part, a vibrating screen section, a cleaning and drying system and the like, and can seal the whole process from sample feeding, crushing and screening to filling into a storage tank, fill protective gas in the whole process to reduce the contact of the samples and harmful gases such as oxygen and the like, realize semi-automatic operation in the whole process, greatly reduce human intervention and improve the sample preparation consistency.

The automatic feeder capable of continuously feeding samples adopts a rotary sample feeding mode, firstly, samples are needed to be pre-crushed on a jaw crusher, then the crushed samples are placed into a sample feeder bin, the samples are automatically and slowly filled into a crushing part by a sample feeder, and the filling can be repeated on line.

The crushing part is mechanical crushing and consists of two continuous parts, the primary crushing area is a primary crushing part, large samples are crushed into proper particles, and then the particles enter a secondary crushing area, the secondary crushing area is a millstone type crushing structure, and the samples after primary crushing are crushed into required particle sizes. The crushing granularity of the secondary crushing area can be adjusted.

The samples crushed by the crushing part downwards enter the vibrating screen section by gravity, quantitative screening is carried out in the section, the mesh number of the screen is changeable, and the layer number of the screen is selectable.

Because the screening efficiency is close to the crushing efficiency in design, all parts are close to synchronous work, the time is overlapped, the transfer is not needed, and the efficiency is extremely high.

The whole system is closed, and nitrogen or specific protective gas can be introduced in the working process, so that the sample is in a protected state in the whole process.

After the screening is finished, each layer of sieve tray is provided with an interface capable of being connected with the special sample storage tank, and the samples which are screened can be injected into the special sample storage tank by gravity through the rotary screening system, so that the whole sample preparation process is finished.

Drawings

FIG. 1 is an overall view of a pulverizer;

FIG. 2 is a schematic view of an automatic feeder;

FIG. 3 is a schematic view of the crushing section;

FIG. 4 is a front view of the shaker section construction;

FIG. 5 is a view showing a state where the shaker section samples into the storage tank;

FIG. 6 is a schematic structural view of a special sieve tray for the vibrating sieve portion;

FIG. 7 is a schematic view of a sieve tray seat of the shaker section;

FIG. 8 is a schematic structural view of a swing arm limiting seat of the shaker section;

FIG. 9 is a schematic view of a shaker section turntable configuration;

FIG. 10 is a schematic view of a cleaning and drying system;

the figure is marked with:

1. an automatic feeder, 2, a mechanical crushing part, 2-1, a primary crushing area, 2-2, a secondary crushing area, 3, a vibrating screen part, 4, a cleaning and drying system, 4-1, a cleaning nozzle, 4-2, an air valve, 4-3, a drying heater, 4-4, a drying fan, 5, a frame body, 6, a control system, 7, a caster, 8, an upper cover, 9, a sample injector main body, 10, a lower supporting plate, 10-1, a feeding hole, 11, a rotary driving system, 12, a first back pressure exhaust valve, 13, a dustproof filtering device, 14, a sealing ring, 15, a ring groove sealing ring, 16, a shell, 17, a fixed crushing tooth-shaped sleeve, 18, a spiral crushing body, 19, a crushing motor, 20, an adjustable pressing cover, 21, a movable grinding disc, 22, a fixed grinding disc, 23, a motor, 24, a special screen disc, 24-1, a vibration device, a motor, 24-2 parts of a sieve tray frame, 25 parts of a sieve screen, 25 parts of a rotary disc, 26 parts of a sealing valve, 27 parts of a special sample storage tank, 28 parts of a pressing top plate, 29 parts of a locking cylinder, 30 parts of a swing arm, 31 parts of a swing arm limiting seat, 31-1 parts of a swing arm limiting seat, a spring, 32 parts of a sieve frame, 32-1 parts of an upper plate, 32-2 parts of a side plate, 32-3 parts of a lower plate, 33 parts of a movable upright post, 34 parts of an intermediate sealing ring, 35 parts of a sieve tray seat, 35-1 parts of a porous wall plate, 35-2 parts of a conical cover, 35-3 parts of an exhaust pipe, 35-4 parts of a second back pressure exhaust valve, 36 parts of a sample loading interface, 37 parts of a discharge port, 38 parts of a connecting pipe, 38-1 parts of a straight pipe, 38-2 parts of an inclined pipe, 39 parts of a flexible connecting pipe, 40 parts of a top frame sealing ring.

Detailed Description

The following is a detailed description of the embodiments of the automatic grinding and screening machine of the present invention.

The automatic crushing and screening integrated machine integrates an automatic feeder, a mechanical crusher, a vibrating screen machine, a cleaning and drying system and the like which can continuously sample, can seal the whole process from sample feeding to screening until the sample is filled into a storage tank, effectively reduces the contact of the sample and harmful gases such as oxygen and the like, greatly reduces the harm of sample dust to sample preparation personnel and the pollution to a sample preparation chamber because the whole process is sealed, simultaneously stops the possibility of dust flash explosion, and can crush inflammable and explosive samples. The addition of the clean drying system reduces the labor intensity of sample preparation personnel, can effectively reduce the pollution among different samples, and provides early-stage powerful guarantee for the accuracy and consistency of sample analysis.

The sealing, crushing and screening integrated machine is used for automation equipment for preparing powdery samples in a laboratory, has the functions of crushing and screening, and has the functions of preparing, sealing the whole process and filling protective gas.

Example 1

As shown in figure 1, the sealed crushing and screening integrated machine mainly comprises an automatic feeder 1 capable of continuously feeding materials, a mechanical crushing part 2, a vibrating screen part 3, a frame body 5, casters 7 and the like. The automatic feeder 1 of the crushing and screening machine is communicated with the crushing part 2 through a connecting pipe 38, the discharge end of the crushing part 2 is communicated with the vibrating and screening part 3 through a flexible joint 39, and the crushing part 2 and the vibrating and screening part 3 are fixed on the frame body 5. The crushing part 2 and the vibrating screen part 3 are fixed on the frame body 5, other structures can be fixed on the frame body 5, and the frame body 5 can be arranged into a split type frame body, so that the crushing part and the vibrating screen part are convenient to disassemble, use or disassemble, assemble and transport. The truckles 7 are arranged below the frame body 5, so that the moving and the carrying are convenient.

As shown in fig. 1 and 2, the automatic feeder 1 capable of continuous sample injection comprises a sample injector main body 9, a lower supporting plate 10, an upper cover 8, a dustproof filtering device 13, a first back pressure exhaust valve 12, an annular sealing ring 15, a sealing ring 14 and a rotary driving system 11, wherein the sample injector main body 9 is a cavity structure with at least two partitions, a first back pressure exhaust valve 12 surrounded by the dustproof filtering device 13 is arranged in one partition, the upper and lower partitions are closed sealed cavity structures, the other subareas are sample chambers for placing samples to be crushed, the sample chambers are of structures with openings at the upper and lower parts, the sample injector main body 9 is divided into four areas in the embodiment, a first back pressure exhaust valve 12 surrounded by a dustproof filtering device 13 is arranged in one subarea, the other three subareas are all used for containing sample chambers of samples to be crushed, and the sample injector main body 9, a lower supporting plate 10 arranged below the sample injector main body and an upper cover 8 arranged above the sample injector main body form a sealed cavity structure; a rotating shaft of the rotary driving system 11 penetrates through the lower supporting plate 10 to be clamped with the sample injector main body 9, the rotating shaft of the rotary driving system 11 is positioned on the lower supporting plate 10 through a bearing, and an annular groove sealing ring 15 is arranged between the lower supporting plate 10 and the sample injector main body 9; the lower supporting plate 10 is provided with a feeding hole 10-1, the lower surface of the sample injector main body 9, which is provided with a partition of the first backpressure exhaust valve 12, can completely cover the feeding hole 10-1, the feeding hole 10-1 of the lower supporting plate 10 is fixedly connected with one end of a connecting pipe 38, and the other end of the connecting pipe 38 is fixedly connected with the crushing part 2. Preferably, in order to improve the sealing and inflating effect in the whole structure, a sealing ring 14 is arranged between the area where the first backpressure exhaust valve 12 surrounded by the dustproof filtering device 13 is arranged and the lower supporting plate 10, and can be used for sealing and covering the feeding hole 10-1.

The sample injector main body 9, the lower supporting plate 10, the upper cover 8, the ring groove sealing ring 15, the sealing ring 14 and other structures form a closed structure, the structure can replace protective gas and air through the structures of the dustproof filtering device 13, the backpressure exhaust valve 12 and the like, when the sample injector main body 9 is used, only small blocks of samples to be crushed need to be filled into a cavity sample chamber, the rotary driving system 11 drives the sample injector main body 9 to rotate, when protective gas is filled into the device, the region where the first backpressure exhaust valve 12 wrapped with the dustproof filtering device 13 is located covers the feed hole 10-1 of the lower supporting plate 10, the block samples are placed into the sample chamber, the upper cover plate is covered, the protective gas is filled, after a specific time, the sample injector main body 9 is driven to rotate through the rotary driving system 11, the sample chamber filled with the block samples is aligned to the feed hole 10-1 of the lower supporting plate 10, during the rotation process, the small sample blocks can fall into the crushing part 2 through the feeding holes 10-1 by gravity.

As shown in fig. 1 and 3, the pulverizing part 2 includes a pulverizing motor 19, a housing 16, an adjustable press cover 20, a spiral pulverizing body 18, a movable grinding disc 21, a fixed grinding disc 22, and a fixed pulverizing tooth-shaped sleeve 17, the pulverizing motor 19 is fixed on the frame body 5, the end of the pulverizing motor 19 is fixedly and hermetically connected with the housing 16, the housing 16 is a shell structure formed by a neck and a cavity, a primary pulverizing region 2-1 is arranged in the neck of the housing 16, a secondary pulverizing region 2-2 is arranged in the cavity, a feed inlet of the primary pulverizing region 2-1 is communicated with the lower end of a connecting pipe 38, the spiral pulverizing body 18 and the fixed pulverizing tooth-shaped sleeve 17 are arranged in the primary pulverizing region 2-1, the spiral pulverizing body 18 and an output shaft of the pulverizing motor 19 are clamped by a spline, that is, the spiral pulverizing body 18 can axially move along the output shaft of the pulverizing motor 19 but cannot circumferentially rotate, the rotation of the output shaft of the pulverizing motor 19 can drive the spiral pulverizing body 18 to rotate, the fixed crushing tooth-shaped sleeve 17 is fixedly arranged on the inner wall of the primary crushing area 2-1 at the neck part of the shell 16, the spiral crushing body 18 and the fixed crushing tooth-shaped sleeve 17 form relative motion, the entered block-shaped sample is crushed into proper particles, and then the particles enter a secondary crushing area; a movable grinding disc 21 and a fixed grinding disc 22 are arranged in the secondary crushing area 2-2, the fixed grinding disc 22 is fixedly arranged on the inner end surface of the shell 16, the movable grinding disc 21 is arranged at the end part (the end part far away from the crushing motor 19) of the spiral crushing body 18, the disc surfaces of the movable grinding disc 21 and the fixed grinding disc 22 are oppositely arranged, the movable grinding disc 21 and the fixed grinding disc 22 form relative movement, the granular sample obtained in the primary crushing zone 2-1 is further crushed, preferably provided with an adjustable gland 20, the adjustable gland 20 covers the opening part of the shell 16 to form sealing, the pressure plate of the adjustable gland 20 is fixedly connected with the movable grinding disc 21, the rotatable adjustable gland 20 can synchronously rotate with the movable grinding disc 21, the movable grinding disc 21 can be pushed to be arranged on the spiral grinding body 18 to axially move along the output shaft of the grinding motor 19 through the adjustable gland 20, and therefore the gap between the movable grinding disc 21 and the fixed grinding disc 22 is adjusted. The crushing structures arranged in the first-stage crushing area 2-1 and the second-stage crushing area 2-2 are the existing structures, and the adjustable pressure cover 20 is the existing structure capable of adjusting the relative clearance between the movable grinding disc 21 and the fixed grinding disc 22 and used for realizing the adjustment of the crushing granularity. The secondary crushing area 2-2 is communicated with the vibrating screen part 3 through a flexible connecting pipe 39.

The two-stage crushed sample falls into the vibrating screen part 3 at the lower part of the crusher through a detachable flexible connecting pipe 39 connected below under the action of gravity. The flexible connection pipe 39 may be a detachable bellows seal flexible connection, or may be another structure capable of realizing flexible connection.

As shown in fig. 1 and 4-9, the shaker portion 3 is mounted on the frame body 5, the shaker portion 3 includes a vibration motor 23, a screen frame 32, a locking device, a special screen tray 24, a screen tray seat 35, a swing arm 30, a rotary table 25, and a swing arm limit seat 31, a sample loading interface 36 is disposed on an upper plate 32-1 of the screen frame 32, and the screen frame 32 is provided with the vibration motor 23. A plurality of special sieve trays 24 which are sequentially sealed and clamped are arranged in the sieve frame 32, a sieve tray seat 35 is hermetically clamped below the special sieve tray 24 at the lowest layer, discharge holes 37 are formed in the special sieve tray 24 and the sieve tray seat 35, and the locking device is arranged on the lower plate 32-3; the rotation portion of bank 32 fixed connection carousel 25, be provided with the spring locating pin in the rotation portion, the fixed part of carousel 25 and the one end fixed connection that swing arm 30 is close to bank 32, be provided with the locating pin hole on this tip of fixed part of carousel 25 equally, the rotation portion of carousel 25 passes through the spring locating pin location with the fixed part of carousel 25, thereby realize the level and the vertical location of bank 32, the other end of swing arm 30 passes the spacing seat 31 of swing arm and articulates in the one side of keeping away from bank 32 of the support body 5, the spacing seat 31 of swing arm is fixed in the one side that the support body 5 is close to bank 32.

The end of one side in front of swing arm 30 is provided with four spring location groove positions, becomes 90 jiaos respectively, as shown in fig. 8, the spring end of swing arm 30 passes through swing arm spacing seat 31 and forms rotatable connection with carousel 25 through the screw, and swing arm 30 can not rotate, and carousel 25 can rotate around swing arm 30. The rotatable part of the turntable 25 is fixedly connected with the sieve frame 32. The swing arm limiting seat 31 is internally provided with four spring 31-1 structures which correspond to spring grooves arranged on the swing arm 30, one end of each spring 31-1 is abutted against the bottom of each groove, the other end of each spring 31-1 is abutted against an adjusting bolt on the swing arm limiting seat 31, the elasticity of each spring 31-1 can be adjusted through the adjusting bolt, and the integral structure provides a vibration condition for the vibrating screen part 3.

The screen frame 32 is an integral frame structure formed by sequentially welding an upper plate 32-1, a side plate 32-2 and a lower plate 32-3, the locking device comprises a locking cylinder 29 and a pressing top plate 28, the locking cylinder 29 is fixed on the lower plate 32-3, a piston rod of the locking cylinder 29 penetrates through the lower plate 32-3 to be fixedly connected with the pressing top plate 28, the pressing top plate 28 is pushed to press the screen disc seat 35 by upwards moving the piston rod of the locking cylinder 29, and sealing and fixing between the screen disc seat 35 and all special screen discs 24 are synchronously realized. Preferably, a protective gas inflation joint is further mounted on the upper plate 32-1 of the screen frame 32, so that gas isolation protection can be performed on the interior of the vibrating screen part 3, the efficiency of the whole device for filling protective gas is improved, and meanwhile, protective gas can be provided for the interior of the vibrating screen part 3 when the vibrating screen part 3 is used alone. The inflation joint on the sieve frame 32 and the second backpressure exhaust valve 35-4 of the sieve tray seat 35 form a protective gas circuit, and the whole system of the device is closed, so that nitrogen or specific protective gas can be introduced in the working process, and the whole process of sieving the sample is in a gas protection state.

As shown in FIG. 6, the special sieve tray 24 comprises a sieve tray frame 24-1, a middle seal ring 34 and a sieve mesh 24-2, the sieve tray frame 24-1 is of an annular structure with an upper opening and a lower opening, the middle seal ring 34 for positioning and sealing the sieve tray frame 24-1 is arranged below the sieve tray frame 24-1, a silicone seal ring with a groove structure is arranged on the upper portion and the lower portion of the outer periphery of the middle seal ring 34, the sieve mesh 24-2 is integrally and fixedly arranged in the middle, a top frame seal ring 40 is further arranged on the upper edge of the sieve tray frame 24-1 on the uppermost layer, and the middle seal ring 34 is arranged on the lower edge of all other layers and is used for positioning and sealing connection with the lower layer. A discharge port 37 is fixed on the side wall of the sieve tray frame 24-1. The existing standard sieve is of a double-wall structure, a screen is clamped in the middle of the standard sieve, sealing cannot be achieved, and a discharge hole cannot be opened on the side face of the standard sieve. When a plurality of special sieve trays 24 block in proper order, must set up the discharge gate on the right side central line, the sample of the later stage of being convenient for.

The mesh number of the screen mesh 24-2 arranged on the special screen tray 24 from top to bottom is gradually increased. When the sample is screened, the particle size of the sample in the special screening tray 24 from top to bottom is gradually reduced, so that the sample with a specific mesh number can be conveniently taken out in an experiment. The mesh number of the screen can be changed, and the layer number of the screen can be selected.

As shown in fig. 7, the sieve tray seat 35 is a bowl-shaped structure with an opening only at the upper part, the upper edge of the sieve tray seat 35 is clamped with the middle sealing ring 34 installed below the upper layer of the special sieve tray 24, and the side wall of the sieve tray seat 35 is also fixed with a discharge hole 37; an exhaust gas filtering device with a porous side wall is integrally arranged on the inner bottom surface of the sieve tray seat 35.

The special sieve tray 24 and the discharge port 37 of the sieve tray seat 35 have the same structure, the discharge port 37 is a structure in which the flange end faces of two necked flanges are oppositely connected by bolts, one end of the discharge port 37 is installed on the side wall of the sieve tray frame 24-1, the other end of the discharge port 37 is provided with an internal thread sealing interface, a sealing valve 26 is installed between the two flanges of the discharge port 37, and sealing rings are installed between the sealing valve 26 and the two flanges.

A porous wall plate 35-1 of the exhaust filtering device is installed on the inner bottom surface of a sieve tray seat 35, a conical cover 35-2 is fixed on the porous wall plate 35-1, an exhaust pipe 35-3 is arranged in the porous wall plate 35-1, the end part of the exhaust pipe 35-3 is communicated with a second backpressure exhaust valve 35-4, and filter cotton is filled in the exhaust filtering device, so that the environment pollution caused by the screened sample discharged through the exhaust pipe 35-3 can be avoided. The exhaust pressure of the second backpressure exhaust valve 35-4 is greater than that of the first backpressure exhaust valve 12, so that positive pressure exhaust of protective gas is realized, and the filled protective gas can be filled in the device.

In this embodiment, two pin holes are formed in the outer cylindrical surface of the part of the swing arm 30 inserted into the turntable 25, and the included angle between the two pin holes is 90 degrees and is perpendicular to the axis of the swing arm 30, namely, the pin hole is in the horizontal position and the pin hole is in the vertical upward position. The horizontal and vertical placement of the shaker section 3 is achieved by rotating the turntable 25, as shown in fig. 9. Rotated by 90 degrees and placed in the horizontal direction as shown in figure 5, which is convenient for sampling. The carousel 25 is gone up threaded connection and has spring plug pin, and when being in vibration screening operating condition, the rotatory screen frame 32 of plug pin makes the pin card go into the pinhole of swing arm 30 vertical direction, and when needs sample, the rotatory screen frame 32 of plug pin makes the pin card go into the pinhole of swing arm 30 horizontal direction, makes the discharge gate down simultaneously.

The movable upright column 33 arranged on the screen frame 32 can facilitate taking and placing the screen tray seat 35 and the special screen tray 24. The bottom of the movable upright post 33 is articulated on the lower plate 32-3 by a joint, and the upper part of the movable upright post 33 is fastened on a connecting lug of an opening on the upper plate 32-1 by a nut. When the sieve tray seat 35 and the special sieve trays 24 need to be placed in the sieve frame 32, the upper portion of the movable upright column 33 is taken down, the movable upright column 33 is laid down, after the sieve tray seat 35 and the special sieve trays 24 are placed, the upper nut of the movable upright column 33 is installed again, the sieve tray seat 35, the special sieve trays 24, the middle sealing ring 34 and the third sealing ring at the top are simultaneously moved upwards to press the upper plate 32-1 through pushing of the piston rod of the locking air cylinder 29, fixing and sealing between the sieve tray seat 35 and the special sieve trays 24 are achieved, and stability of the whole device is guaranteed.

The use process of the vibrating screen part 3 comprises the steps of unlocking the locking cylinder 29, taking down the upper part of the movable upright post 33, laying down the movable upright post 33, placing the sieve tray seat 35 and the special sieve trays 24 into a multi-layer middle sealing ring 34 and a top third sealing ring in a matched mode from bottom to top, opening the locking cylinder 29, pushing the piston rod of the locking cylinder 29 to enable the sieve tray seat 35 and the special sieve trays 24 to move upwards together with the middle sealing ring 34 and the top frame sealing ring to press the upper plate 32-1, fixing and sealing between the sieve tray seat 35 and the special sieve trays 24 are achieved, and the integral stability of the vibrating screen part 3 is guaranteed. Through the motion of vibrating motor 23, drive shake sieve portion 3 and carry out the shale shaker motion, realize the screening function. Through carousel 25 on the suspension support, rotatable horizontal shake sieve portion 3, make special sieve tray 24 and sieve tray seat 35's discharge gate 37 downwards, through the sealed interface of internal thread above the discharge gate 37, connect special sample holding vessel 27 or current holding vessel, open the valve 26 of special connection mouth department, the sample can fall into the special sample holding vessel 27 that has connect, but among the sampling process shock dynamo 23 low frequency work, sample with higher speed, treat that the sample all falls into behind special sample holding vessel 27, close all valves, take off special sample holding vessel 27 and accomplish the screening process.

After the screening of 3 sieve portions shakes, every layer of screen cloth all has the connector of joinable special sample holding vessel, shakes sieve portion 3 through the rotation, can lean on gravity to pour into special sample holding vessel with the sample that the screening was accomplished, accomplishes the screening process. The whole process from screening to filling into the special storage tank can be sealed, and protective gas can be filled to reduce the contact of the sample and harmful gases such as oxygen and the like.

The connecting pipe 38 is a straight-through pipe, the upper end of the straight-through pipe is communicated with the sample injector main body 9, and the lower end of the straight-through pipe is communicated with the crushing part 2; the straight-through pipe is provided with a protective gas inflation joint which can perform gas isolation protection on the inside of the whole system. The protective gas in the whole system enters from the protective gas charging connector, and can also enter through the protective gas charging connector arranged on the upper plate 32-1 of the sieve frame 32 at the same time, and finally is discharged through the exhaust pipe 35-3 of the sieve tray seat 35.

Example 2

On the basis of the embodiment 1, the automatic crushing and screening integrated machine is further provided with a cleaning and drying system 4, the cleaning and drying function of the crushing part 2 can be realized, the automatic feeder 1 of the crushing and screening machine is communicated with the cleaning and drying system 4 and then communicated with the feeding end of the crushing part 2, the connecting pipe 38 is a structure that an inclined pipe 38-2 with an inclined angle alpha of 30-45 degrees is integrally arranged on a straight pipe 38-1, the upper end of the straight pipe 38-1 is communicated with the sample injector main body 9, the lower end of the straight pipe 38-1 is communicated with the crushing part 2, and the inclined pipe 38-2 is communicated with the cleaning and drying system 4.

As shown in figures 1 and 10, the cleaning and drying system 4 comprises an atomizing nozzle, a drying fan 4-4, a drying heater 4-3 and an air valve 4-2, the end part of an inclined tube 38-2 is sequentially connected with the drying heater 4-3 and the drying fan 4-4 of the cleaning and drying system 4, the air valve 4-2 is arranged on the inclined tube 38-2, a cleaning nozzle 4-1 is arranged at the upper part of the straight tube 38-1, the atomizing nozzle 4-1 is externally connected with the atomizing nozzle, and the atomizing nozzle is externally connected with a water pipe. Through atomizer, spray the whole pipeline of this device, open simultaneously and smash motor 19, can carry out complete washing to crushing portion 2, carry out hot-blast rapid draing again after the washing, reduce the preparation cycle of changing a design, this process can automatic control, need not human intervention, has alleviateed intensity of labour.

The straight pipe 38-1 is provided with a protective gas inflation joint which can perform gas isolation protection on the inside of the whole system. The protective gas in the whole system enters from the protective gas charging connector, and can also enter through the protective gas charging connector arranged on the upper plate 32-1 of the sieve frame 32 at the same time, and finally is discharged through the exhaust pipe 35-3 of the sieve tray seat 35.

The preferred embodiment uses the method:

after the whole equipment is installed and connected, timing gas isolation and replacement are firstly carried out on the inside of the whole system through a protective gas inflation connector, at the moment, the area where a first backpressure exhaust valve 12 which is surrounded by a dustproof filtering device 13 is located at the position where a feeding hole 10-1 of a lower supporting plate 10 is covered in a sealing mode, small samples to be crushed can be filled into a cavity sample chamber, after gas replacement is finished, a driving system 11 is started to drive a sample injector main body 9 to rotate, a sample chamber filled with block samples is enabled to be gradually aligned to the feeding hole 10-1 of the lower supporting plate 10, and the small samples can fall into a crushing part 2 through the feeding hole 10-1 by means of gravity in the rotating process.

The small sample blocks are subjected to primary crushing in the primary crushing area 2-1, the small sample blocks are crushed into proper particles, the crushed particles can directly enter the secondary crushing area 2-2, and the gap between the movable grinding disc 21 and the fixed grinding disc 22 is adjusted by adjusting the position of the adjustable pressing cover 20 in the secondary crushing area 2-2 to obtain the required crushing granularity. The two-stage crushed sample falls into the vibrating screen part 3 at the lower part of the crusher through a detachable flexible connecting pipe 39 connected below under the action of gravity.

Through the motion of vibrating motor 23, drive shake sieve portion 3 and carry out the shale shaker motion, realize the screening function. Through carousel 25 on the suspension support, rotatable horizontal shake sieve portion 3, make special sieve tray 24 and sieve tray seat 35's discharge gate 37 downwards, through the sealed interface of internal thread above the discharge gate 37, connect special sample holding vessel 27 or current holding vessel, open the valve 26 of special connection mouth department, the sample can fall into the special sample holding vessel 27 that has connect, but among the sampling process shock dynamo 23 low frequency work, sample with higher speed, treat that the sample all falls into behind special sample holding vessel 27, close all valves, take off special sample holding vessel 27 and accomplish the screening process.

Claims

1. The utility model provides a sealed crushing screening machine which characterized in that: this crushing screening machine's automatic feed ware (1) and the feed end intercommunication of crushing portion (2), the discharge end of crushing portion (2) passes through the flexible coupling and shakes sieve portion (3) intercommunication, and crushing portion (2) and shake sieve portion (3) are fixed in on support body (5).

2. The sealed pulverizing screen machine of claim 1, wherein: the automatic feeder (1) comprises a sample injector main body (9), a lower supporting plate (10), an upper cover (8), a first back pressure exhaust valve (12), an annular groove sealing ring (15) and a rotary driving system (11), wherein the sample injector main body (9) is of a cavity structure with at least two partitions, the first back pressure exhaust valve (12) is arranged in one partition, the upper part and the lower part of the partition are of a sealed cavity structure, other partitions are used for placing samples to be crushed, the partition for placing the samples to be crushed is of a structure with an upper opening and a lower opening, and the sample injector main body (9), the lower supporting plate (10) arranged below the sample injector main body and the upper cover (8) arranged above the sample injector main body can form a sealed cavity structure; a rotating shaft of the rotary driving system (11) penetrates through the lower supporting plate (10) to be clamped with the sample injector main body (9), the rotary driving system (11) is supported by a bearing on the lower supporting plate (10), and an annular groove sealing ring (15) is arranged between the lower supporting plate (10) and the sample injector main body (9); the lower supporting plate (10) is provided with a feeding hole (10-1), the size of the lower surface of the partition where the first backpressure exhaust valve (12) is located can completely cover the feeding hole (10-1), a sealing ring (14) is installed at the contact position of the partition where the first backpressure exhaust valve (12) is located and the lower supporting plate (10), the feeding hole (10-1) of the lower supporting plate (10) is fixedly connected with one end of a connecting pipe (38), and the other end of the connecting pipe (38) is fixedly connected with the crushing part (2).

3. The sealed pulverizing screen machine of claim 1, wherein: the grinding part (2) comprises a grinding motor (19), a shell (16), an adjustable gland (20), a spiral grinding body (18), a movable grinding disc (21), a fixed grinding disc (22) and a fixed grinding tooth-shaped sleeve (17), the grinding motor (19) is fixed on a frame body (5), the end part of the grinding motor (19) is fixedly and hermetically connected with the shell (16), a primary grinding area (16-1) and a secondary grinding area (16-2) are arranged in the shell (16), the primary grinding area (16-1) is communicated with the lower end of a connecting pipe (38), the spiral grinding body (18) and the fixed grinding tooth-shaped sleeve (17) are arranged in the primary grinding area (16-1), the spiral grinding body (18) is clamped with an output shaft of the grinding motor (19), and the fixed grinding tooth-shaped sleeve (17) is fixedly arranged on the end face of the inner wall of the primary grinding area (16-1); a movable grinding disc (21) and a fixed grinding disc (22) are arranged in the secondary crushing area (16-2), the fixed grinding disc (22) is fixedly arranged on the inner end face of the shell (16), the movable grinding disc (21) is arranged at the end part of the spiral crushing body (18), an adjustable gland (20) covers the opening part of the shell (16) to form sealing, a pressure plate of the adjustable gland (20) is fixedly connected with the movable grinding disc (21), and the secondary crushing area (16-2) is communicated with the vibration screening part (3) through a flexible connecting pipe (39).

4. The sealed pulverizing screen machine of claim 2, wherein: the vibrating screen part (3) comprises a vibrating motor (23), a screen frame (32), a locking device, special screen discs (24), a screen disc seat (35), a swing arm (30), a rotary disc (25) and a swing arm limiting seat (31), wherein a sample loading interface (36) is arranged on an upper plate (32-1) of the screen frame (32), the vibrating motor (23) is arranged on the screen frame (32), a plurality of special screen discs (24) which are sequentially sealed and clamped are arranged in the screen frame (32), the screen disc seat (35) is hermetically clamped below the special screen disc (24) at the lowest layer, discharge holes (37) are formed in the special screen discs (24) and the screen disc seat (35), and the locking device is arranged at the lower part of the screen frame (32); the rotating part of sieve frame (32) fixed connection carousel (25), the fixed part of carousel (25) and swing arm (30) are close to the one end fixed connection of sieve frame (32), and the other end of swing arm (30) passes spacing seat of swing arm (31) and articulates in one side of keeping away from sieve frame (32) in support body (5), and the spacing seat of swing arm (31) are fixed in one side that support body (5) are close to sieve frame (32).

5. The sealed pulverizing screen machine of claim 4, wherein: the special sieve tray (24) comprises a sieve tray frame (24-1), a middle sealing ring (34) and a sieve screen (24-2), the sieve tray frame (24-1) is of an annular structure with an upper opening and a lower opening, the middle sealing ring (34) is arranged below the sieve tray frame (24-1), the sieve screen (24-2) is integrally and fixedly arranged on the middle sealing ring (34), and a discharge hole (37) is fixedly arranged on the side wall of the sieve tray frame (24-1).

6. The sealed pulverizing screen machine of claim 4, wherein: the sieve tray seat (35) is of a bowl-shaped structure with an opening at the upper part, a middle sealing ring (34) arranged below a layer of special sieve tray (24) is clamped on the upper edge of the sieve tray seat (35), an exhaust filtering device with a porous side wall is integrally arranged on the inner bottom surface of the sieve tray seat (35), a porous wall plate (35-1) of the exhaust filtering device is arranged on the inner bottom surface of the sieve tray seat (35), a conical cover (35-2) is fixed on the porous wall plate (35-1), an exhaust pipe (35-3) is arranged in the porous wall plate (35-1), the end part of the exhaust pipe (35-3) penetrates through the sieve tray seat (35) and is communicated with a second backpressure exhaust valve (35-4), filter cotton is filled in the porous wall plate (35-1) of the exhaust filtering device, a discharge hole (37) is fixed on the side wall of the sieve tray seat (35), and the exhaust pressure of the second backpressure exhaust valve (35-4) is greater than that of the first backpressure exhaust valve (12).

7. The sealed pulverizing screen machine of claim 5 or 6, wherein: the discharge port (37) is a structure formed by connecting the end faces of two flanges with neck flanges relative to bolts, one end of the discharge port (37) is installed on the side wall of the sieve tray frame (24-1) or the sieve tray seat (35), the other end of the discharge port (37) is provided with an internal thread sealing interface, and a sealing valve (26) is installed between the two flanges of the discharge port (37).

8. The sealed pulverizing screen machine of claim 1, wherein: the connecting pipe (38) is a three-way pipe, an inclined pipe (38-2) with an included angle of 45 degrees is integrally welded on the straight pipe (38-1), the upper end of the straight pipe (38-1) is communicated with the sample injector main body (9), and the lower end of the straight pipe (38-1) is welded and communicated with the crushing part (2); the inclined tube (38-2) is communicated with the cleaning and drying system (4).

9. The sealed pulverizing screen machine of claim 8, wherein: the cleaning and drying system (4) comprises an atomizing spray head, a drying fan (4-4), a drying heater (4-3) and an air valve (4-2), a cleaning nozzle (4-1) is arranged on the upper portion of a straight pipe (38-1), the atomizing spray head is connected with the cleaning nozzle (4-1) in an external mode, the air valve (4-2) is arranged on an inclined pipe (38-2), and the end portion of the inclined pipe (38-2) is sequentially connected with the drying heater (4-3) and the drying fan (4-4) of the cleaning and drying system (4).

10. The sealed pulverizing screen machine of claim 7, wherein: the straight pipe (38-1) is also provided with a protective gas inflation joint.