CN113967588A

CN113967588A - Sealed sieving machine

Info

Publication number: CN113967588A
Application number: CN202111410196.8A
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: 2022-01-25
Anticipated expiration: 2041-11-25
Also published as: CN113967588B

Abstract

The invention relates to a sealed screening machine. The screen main body of the screening machine is installed on a suspension support frame. The screen main body includes a vibration motor, a screen frame, a locking device, a special screen tray and a screen tray seat. The screen frame is fixed on the On the suspension support frame, the upper plate of the sieve frame is provided with a sample loading interface, the sieve frame is provided with a vibration motor, and a plurality of special sieve trays which are sealed and clamped in sequence are arranged in the sieve frame. A sieve tray seat is connected, the special sieve tray and the sieve tray seat are provided with discharge ports, and the locking device is set on the sieve frame. The invention solves the problem that the existing screening machine cannot realize the continuous feeding and closed screening.

Description

Sealed sieving machine

Technical Field

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

Background

Generally, most samples for physical and chemical property analysis in a laboratory are massive solids with different sizes, so that after the samples to be analyzed are received in the laboratory, the samples need to be firstly crushed, a screening process is carried out after crushing is finished by a crusher, samples with different particle sizes are separated, or samples with required particle sizes are screened out, and a screening machine capable of isolating oxygen in the whole process and a closed screening machine capable of continuously feeding are not arranged in the screening process. Therefore, the sample which is easy to oxidize is oxidized in the screening process, and the experimental result is inaccurate and the error is large.

In the prior screening process, a small amount of sample dust can be drifted out of the sample preparation chamber, and especially some samples have toxic action and great harm to sample preparation personnel and can also pollute the whole sample preparation chamber and all equipment in the sample preparation chamber.

Since many sample preparation and screening processes are performed by the laboratory personnel, the sample preparation cost becomes higher, and it is important to reduce the contact of the sample with harmful gas components in the sample preparation process.

Disclosure of Invention

The purpose of the invention is as follows: the invention provides a sealed screening machine, and aims to solve the problem that the conventional screening machine cannot realize continuous feeding and sealed screening.

The technical scheme is as follows:

the utility model provides a sealed screening machine, the riddler main part of this screening machine is installed on the suspension support frame body, the riddler main part includes shock dynamo, the bank of screens, locking device, special reel, the reel seat, the bank of screens is fixed on the suspension support frame body, be provided with the appearance interface on the upper plate of bank of screens, be provided with shock dynamo on the bank of screens, be provided with a plurality of special reels of sealed joint in proper order in the bank of screens, the sealed joint in special reel below of lower floor has the reel seat, all be provided with the discharge gate on special reel and the reel seat, locking device sets up on the bank of screens.

Furthermore, the special sealing rings are clamped below the sieve tray frame of each layer of special sieve tray, the special sealing rings are of groove-shaped structures which are arranged from top to bottom, the sieve mesh is clamped in the middle of each special sealing ring, the top sealing ring is installed above the uppermost sieve tray frame, and a discharge hole is fixed on the side wall of the sieve tray frame.

Furthermore, the mesh number of the screen mesh of the special screen disc increases gradually from top to bottom.

Furthermore, the sieve tray seat is of a bowl-shaped structure with an opening at the upper part, the upper edge of the sieve tray seat is clamped with the special sealing ring on the upper layer, a discharge hole is fixed on the side wall of the sieve tray seat, and a filtering ventilation valve structure is arranged on the inner bottom surface of the sieve tray seat.

Further, filter ventilation valve structure includes exhaust filtration, conical cover and blast pipe, and the integrative setting of exhaust filtration that has porous lateral wall is on sieve tray seat bottom surface, and the last conical cover that is fixed with the conical structure of exhaust filtration is provided with the blast pipe in the exhaust filtration, and sieve tray seat intercommunication back pressure valve is worn out to the blast pipe tip, and exhaust filtration intussuseption is filled with the filter pulp.

Further, the suspension support body includes the spacing seat of support body, swing arm, carousel and swing arm, and the one end of swing arm articulates on the support body, and the spacing seat of swing arm is fixed on the support body, and the other end of swing arm is provided with two or more pinholes, and the other end of swing arm passes the spacing seat of swing arm and passes through pin fixed connection with the carousel, and the spacing seat of swing arm is connected with carousel clearance joint or bearing, carousel and bank of screens fixed connection.

Furthermore, a movable upright post is arranged on the screen frame.

Furthermore, an inflation joint is arranged on the upper plate of the screen frame.

Has the advantages that:

the sealed screening machine can seal the whole process from screening to filling into the storage tank, can be filled with protective gas, effectively reduces large-area contact of samples with harmful gas such as oxygen and the like in the screening process, greatly reduces the harm of sample dust to sample preparation personnel and the pollution to a sample preparation chamber due to the sealed structure of the sealed screening machine, simultaneously avoids the possibility of dust flash explosion, and can screen flammable and explosive samples.

Drawings

Figure 1 is a front view of the whole structure of the sealing sieving machine in the embodiment 1;

FIG. 2 is a diagram showing the state of the sealed sieving machine of example 1 in which a sample is taken into a storage tank;

FIG. 3 is a front view of the whole structure of the sealing sieving machine in the embodiment 2;

FIG. 4 is a diagram showing the state of the sealed sieving machine of example 2 in which a sample is taken into a storage tank;

FIG. 5 is a schematic view of a dedicated sieve tray;

FIG. 6 is a schematic view of a sieve tray seat;

FIG. 7 is a schematic view of a swing arm limiting seat;

FIG. 8 is a schematic view of a turntable structure;

the figure is marked with:

1. the device comprises a vibration motor, 2 parts of a sieve frame, 2-1 parts of an upper plate, 2-2 parts of a side plate, 2-3 parts of a lower plate, 3 parts of a movable upright post, 4 parts of a special sealing ring, 5 parts of a special sieve tray, 5-1 parts of a sieve tray frame, 5-2 parts of a sieve screen, 5-3 parts of a top sealing ring, 6 parts of a sieve tray seat, 6-1 parts of an exhaust filtering structure, 6-2 parts of a conical cover, 6-3 parts of an exhaust pipe, 6-4 parts of an exhaust pipe, a back pressure valve, 7 parts of a sample loading interface, 8 parts of a pressing top plate, 9 parts of a locking cylinder, 10 parts of a rotary table, 11 parts of a swing arm, 12 parts of a swing arm limiting seat, 12-1 parts of a spring, 13 parts of a frame body, 14 parts of a valve, 15 parts of a sample storage tank, 16 parts of a discharge port.

Detailed Description

The following further details embodiments of the sealed screen machine of the present invention.

The sealed sieving machine mainly comprises a vibrating sieve main body, a cantilever type suspension bracket and the like, wherein each layer of sieve net is provided with a connecting port capable of being connected with a special sample storage tank after sieving is finished, and sieved samples can be injected into the special sample storage tank by gravity through rotating the vibrating sieve main body to finish the sieving 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.

Example 1

As shown in fig. 1-2, a sealed screening machine, a shaker main body of the screening machine is installed on a suspension support frame body, the shaker main body includes a vibrating motor 1, a screen frame 2, a locking device, a special screen tray 5 and a screen tray seat 6, the screen frame 2 is fixed on the suspension support frame body, a sample loading interface 7 is arranged on an upper plate 2-1 of the screen frame 2, and the vibrating motor 1 is arranged on the screen frame 2. A plurality of special sieve trays 5 which are sequentially clamped are arranged in the sieve frame 2, a sieve tray seat 6 is clamped below the special sieve tray 5 at the lowest layer, discharge holes 16 are formed in the special sieve tray 5 and the sieve tray seat 6, and the locking device is arranged on the sieve frame 2. And a protective gas inflation joint is also arranged on the upper plate 2-1 of the sieve frame 2, so that the inside of the whole system can be protected in a gas isolation way. The gas-filled joint on the screen frame 2 and the back pressure valve 6-4 of the screen tray seat 6 form a gas path of protective gas, 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 screening the sample is in a gas protection state.

As shown in figure 1, the screen frame 2 is an integral frame structure formed by sequentially welding an upper plate 2-1, side plates 2-2 and a lower plate 2-3, the locking device comprises a locking cylinder 9 and a pressing top plate 8, the locking cylinder 9 is fixed on the lower plate 2-3, an air rod of the locking cylinder 9 penetrates through the lower plate 2-3 and is fixedly connected with the pressing top plate 8, the pressing top plate 8 is pushed to press the screen disc seat 6 by upward movement of the locking cylinder 9, and sealing and fixing between the screen disc seat 6 and all special screen discs 5 are synchronously realized.

As shown in fig. 5, the special sieve tray 5 includes a sieve tray frame 5-1, a special seal ring 4 and a sieve screen 5-2, the special seal ring 4 is clamped below the sieve tray frame 5-1 of each layer of the special sieve tray 5, the special seal ring 4 is a silica gel seal ring with a groove structure on the upper and lower sides, an annular groove structure connected with the sieve screen is arranged in the middle of the special seal ring 4, the annular groove structure can clamp the flat sieve screen 5-2, and a discharge port 16 is fixed on the side wall of the sieve tray frame 5-1. The special sieve tray 5 is provided with a top sealing ring 5-3 on the upper edge of the sieve tray frame 5-1 on the uppermost layer, the top sealing ring 5-3 is provided with a groove structure matched with the upper edge of the sieve tray frame 5-1, the top sealing ring 5-3 is not needed on other layers, and the top sealing ring 5-3 is only used for sealing the gap between the special sieve tray 5 on the uppermost layer and the upper plate 2-1. When a plurality of special sieve trays 5 joint in proper order, set up the discharge gate on the right side central line, the sample of the later stage of being convenient for.

The existing sieve tray is of a double-wall structure, a sieve mesh is clamped in the middle of the sieve tray, sealing cannot be achieved, a discharge hole cannot be opened on the side face of the sieve tray, and the sieve tray is also one of the reasons that no sealing sieving machine equipment exists at present. Therefore, the structure of the sieve tray is improved, the sieve screen 5-2 is integrally installed on the special sealing ring 4 and then forms the special sieve tray 5 together with the sieve tray frame 5-1, the sieve trays with different meshes can be hermetically connected, and meanwhile, the sieve tray with different meshes can be conveniently sampled and is convenient to install and clean.

The mesh number of the screen 5-2 arranged on the special screen tray 5 from top to bottom is gradually increased. When the sample is screened, the particle size of the sample in the special screening disc 5 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. 6, the sieve tray seat 6 is a bowl-shaped structure with an opening only at the upper part, and a discharge hole 16 is also fixed on the side wall of the sieve tray seat 6; a filtering ventilation valve structure is arranged on the inner bottom surface of the sieve tray seat 6.

The special sieve tray 5 and the discharge port 16 of the sieve tray seat 6 are consistent in structure, the discharge port 16 is a structure in which the flange end faces of two necked flanges are oppositely connected through screws, one end of the discharge port 16 is installed on the side wall of the sieve tray frame 5-1, the other end of the discharge port 16 is provided with an internal thread sealing interface, a sealing valve 14 is installed between the two flanges of the discharge port 16, and a sealing ring is installed between the sealing valve 14 and the two flanges.

The filtering ventilation valve structure comprises an exhaust filtering structure 6-1, a conical cover 6-2 and an exhaust pipe 6-3, wherein the exhaust filtering structure 6-1 is a porous wall plate integrally installed on the inner bottom surface of a sieve tray seat 6, the conical cover 6-2 is fixed on the porous wall plate, the exhaust pipe 6-3 is arranged in the exhaust filtering structure 6-1, the end part of the exhaust pipe 6-3 is communicated with a back pressure valve 6-4, and filter cotton is filled in the exhaust filtering structure 6-1, so that a screened sample can be prevented from being discharged to pollute the environment through the exhaust pipe 6-3.

The suspension support frame includes support body 13, swing arm 11, carousel 10 and the spacing seat of swing arm 12, the one end of swing arm 11 articulates on one side in the back of support body 13, the spacing seat of swing arm 12 is fixed on one side in the front of support body 13, the preceding one side end of swing arm 11 is provided with four spring location groove positions, become 90 jiaos respectively, as shown in figure 7, the spring end of swing arm 11 passes the spacing seat of swing arm 12 and forms rotatable coupling through screw and carousel 10, swing arm 11 can not rotate, carousel 10 can be rotatory around swing arm 11. The rotary table 10 is fixedly connected with the sieve frame 2. As shown in figure 3, the swing arm limiting seat 12 is internally provided with four spring 12-1 structures which correspond to spring grooves arranged on the swing arm 11, one end of each spring 12-1 is in top contact with the bottom of each groove, the other end of each spring 12-1 is in top contact with an adjusting bolt on the swing arm limiting seat 12, the elasticity of each spring 12-1 can be adjusted through the adjusting bolts, and the integral structure provides a vibration condition for the vibrating screen main body.

In this embodiment, two pin holes are formed in the outer cylindrical surface of the portion of the swing arm 11 inserted into the turntable 10, and the included angle between the two pin holes is 90 degrees and is perpendicular to the axis of the swing arm 11, 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 body is achieved by rotating the turntable 10, as shown in fig. 1. Rotated by 90 degrees and placed in the horizontal direction as shown in figure 2, so as to be convenient for sampling. There is the spring plug pin to threaded connection on the carousel 10, when being in vibration screening operating condition, inserts out pin rotary screen frame 2 and makes the pin card go into in the pinhole of swing arm 11 vertical direction, when needs sample, inserts out pin rotary screen frame 2 and makes the pin card go into the pinhole of swing arm 11's horizontal direction, makes the discharge gate down simultaneously.

The screen frame 2 is provided with a movable upright post 3, and a screen disc seat 6 and a special screen disc 5 can be conveniently taken and placed. The bottom of the movable upright post 3 is hinged on the lower plate 2-3 by a joint, and the upper part of the movable upright post 3 is fastened on a connecting lug of an upper opening of the upper plate 2-1 by a nut. When the sieve tray seat 6 and the special sieve trays 5 are placed in the sieve frame 2, the upper part of the movable upright post 3 is taken down, the movable upright post 3 is laid down, after the sieve tray seat 6 and the special sieve trays 5 are placed, the upper nut of the movable upright post 3 is installed again, the sieve tray seat 6, the special sieve trays 5, the top sealing ring 4 and the top sealing ring 5-3 are simultaneously moved upwards to press the upper plate 2-1 through the pushing of the piston rod of the locking cylinder 9, the fixation and sealing between the sieve tray seat 6 and the special sieve trays 5 are realized, and the stability of the whole device is ensured.

The using method comprises the following steps:

unlocking the locking cylinder 9, taking down the upper part of the movable upright post 3, laying down the movable upright post 3, placing the sieve tray seat 6 and the special sieve trays 5 from bottom to top in a matched manner to form a plurality of layers of top sealing rings 4 and top sealing rings 5-3, opening the locking cylinder 9, pushing the piston rod of the locking cylinder 9 to simultaneously move up the sieve tray seat 6 and the special sieve trays 5 together with the top sealing rings 4 and the top sealing rings 5-3 to press the upper plate 2-1, fixing and sealing between the sieve tray seat 6 and the special sieve trays 5, and ensuring the integral stability of the vibrating screen main body. Through the motion of vibrating motor 1, drive the riddler main part and carry out the riddler motion, realize the screening function. Through carousel 10 on the suspension support, rotatable horizontal riddle main part, as shown in fig. 2, make special sieve dish 5 and sieve tray seat 6's discharge gate 16 downwards, as shown in fig. 5, 6, through the sealed interface of internal thread above the discharge gate 16, connect special sample holding vessel 15 or current holding vessel, open the valve 14 of special connection department, as shown in fig. 2, the sample can fall into the special sample holding vessel 15 that has connect, but vibrating motor 1 low frequency work among the sampling process, sample with higher speed, treat that the sample is whole to fall into special sample holding vessel 15 after, close all valves, take off special sample holding vessel 15 and accomplish the screening process.

The roller wheels can be arranged below the suspension support frame body, and can be roller wheels with locking structures, so that the whole equipment can be moved conveniently.

Example 2

The whole structure is almost the same as that of the embodiment 1, and only the front upright post is cancelled by changing the surrounding angle of the side plates 2-2, so that the special sieve tray 5 and the sieve tray seat 6 can be more conveniently taken and placed, as shown in figure 3.

The using method comprises the following steps:

unlocking the locking cylinder 9, directly placing the special sealing ring 4 and the top sealing ring 5-3 on the sieve tray seat 6 and the special sieve trays 5 in a matched manner from bottom to top, opening the locking cylinder 9, simultaneously moving the sieve tray seat 6 and the special sieve trays 5 together with the top sealing ring 4 and the top sealing ring 5-3 upwards to press the upper plate 2-1 by the pushing of a piston rod of the locking cylinder 9, realizing the fixation and sealing between the sieve tray seat 6 and the special sieve trays 5, and ensuring the overall stability of the vibrating screen main body. Through the motion of vibrating motor 1, drive the riddler main part and carry out the riddler motion, realize the screening function. Through carousel 10 on the suspension support, rotatable horizontal riddle main part, as shown in fig. 4, make special sieve dish 5 and sieve tray seat 6's discharge gate 16 downwards, as shown in fig. 5, 6, through the sealed interface of internal thread above the discharge gate 16, connect special sample holding vessel 15 or current holding vessel, open the valve 14 of special connection department, as shown in fig. 4, the sample can fall into the special sample holding vessel 15 that has connect, but vibrating motor 1 low frequency work among the sampling process, sample with higher speed, treat that the sample is whole to fall into special sample holding vessel 15 after, close all valves, take off special sample holding vessel 15 and accomplish the screening process.

The sealing sieving machine is used for special equipment for preparing powdery samples in a laboratory, has the sealing sieving function, and simultaneously has the functions of sealing the whole sieving process and filling protective gas in the whole sieving process.

Claims

1. A sealed screening machine, characterized in that: the main body of the screening machine is installed on the suspension support frame, and the main body of the screening machine comprises a vibration motor (1), a screen frame (2), a locking device, and a special screen tray. (5), the sieve tray seat (6), the sieve frame (2) is fixed on the suspension support frame body, the upper plate (2-1) of the sieve frame (2) is provided with a sample loading interface (7), the sieve frame ( 2) A vibrating motor (1) is arranged on the top, a plurality of special sieve trays (5) are arranged in the sieve frame (2) which are sealed and clamped in sequence, and a sieve tray seat ( 6), the special sieve tray (5) and the sieve tray seat (6) are provided with a discharge port (16), and the locking device is arranged on the sieve frame (2).

2. A sealed screening machine according to claim 1, characterized in that: a special sealing ring (4) is clamped under the sieve tray frame (5-1) of each special sieve tray (5), and the special sealing ring (4) It is a structure in which the upper and lower sides are set as grooves. The special sealing ring (4) is clamped to the screen mesh (5-2) in the middle, and the top sealing ring (5-1) is installed above the uppermost screen tray frame (5-1). 3) A discharge port (16) is fixed on the side wall of the sieve tray frame (5-1).

3. A sealed screening machine according to claim 2, characterized in that: the mesh number of the screen mesh (5-2) of the special screen tray (5) increases layer by layer from top to bottom.

4. A sealed screening machine according to claim 1, characterized in that: the sieve tray seat (6) is a bowl-shaped structure with only an upper opening, and the upper edge of the sieve tray seat (6) and a special sealing ring on the upper layer (4) For snap connection, a discharge port (16) is fixed on the side wall of the sieve tray seat (6), and a filter ventilation valve structure is arranged on the inner bottom surface of the sieve tray seat (6).

5. A sealed screening machine according to claim 4, characterized in that: the filter ventilation valve structure comprises an exhaust filter structure (6-1), a conical cover (6-2) and an exhaust pipe (6-3) ), an exhaust filter structure (6-1) with a porous side wall is integrally arranged on the bottom surface of the sieve tray seat (6), and a cone-shaped cover (6-1) is fixed on the exhaust filter structure (6-1). 2), an exhaust pipe (6-3) is arranged in the exhaust filter structure, and the end of the exhaust pipe (6-3) passes through the sieve tray seat (6) to communicate with the back pressure valve (6-4), and the exhaust filter The structure is filled with filter cotton.

6. A sealed screening machine according to claim 1, characterized in that: the suspension support frame body comprises a frame body (13), a swing arm (11), a turntable (10) and a swing arm limit seat (12), One end of the swing arm (11) is hinged on the frame body (13), the swing arm limit seat (12) is fixed on the frame body (13), and the other end of the swing arm (11) is provided with two or more pin holes , the other end of the swing arm (11) passes through the swing arm limit seat (12) and is fixedly connected to the turntable (10) by pins, and the swing arm limit seat (12) is connected with the turntable (10) by clearance or bearing connection, and the turntable ( 10) Fixed connection with the screen frame (2).

7. A sealed screening machine according to claim 1, characterized in that: a movable column (3) is arranged on the screen frame (2).

8 . The sealed screening machine according to claim 1 , characterized in that: an inflatable joint is provided on the upper plate ( 2 - 1 ) of the screen frame ( 2 ). 9 .