CN210037330U

CN210037330U - Pressure separation type powder sampling machine

Info

Publication number: CN210037330U
Application number: CN201920272417.1U
Authority: CN
Inventors: 袁大辉
Original assignee: Xuzhou Saite Electromechanical Technology Co Ltd
Current assignee: Xuzhou Saite Electromechanical Technology Co Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-02-07
Anticipated expiration: 2029-03-05

Abstract

A pressure separation type powder sampling machine. The sampling machine mainly comprises a sampling pipe, a feeding combination valve, a sample catcher, a pressure aspirator, an air inlet combination valve, a sample unloading combination valve, a sample weighing pipe and a PLC control unit, wherein the valve body is enabled to work in an unloaded mode through a PLC control program, the sampling is continuously and automatically carried out, the sample is collected through the sample catcher, and the sample is weighed through the sample weighing pipe. The advantages are that: 1. the sampling pipe extends into the central part of the material conveying pipe, so that automatic sampling can be performed throughout the whole conveying process, and the sample representativeness is strong; 2. each valve body does not work under load, so that the durability of the equipment is improved; 3. pressure release and discharge are environment-friendly, and no dust pollution is caused on site; 4. the full-automatic operation can be realized; 5. displaying the sample quantity value in real time; 6. the outside of the sample catcher is wrapped by a heat insulation material, so that the condensation and absorption of the external temperature on the water of the sample are avoided, the representativeness of the sample is improved, and the water vapor condensation and scale deposition in the equipment are avoided.

Description

Pressure separation type powder sampling machine

Technical Field

The utility model relates to an automatic sampling machine for taking granular samples from a pneumatic conveying pipeline, in particular to a pressure separation type powder sampling machine for unloading a powder tank truck.

Background

At present, a bypass pipeline type and a bypass valve body opening and closing type are mostly adopted for a sampling machine for a gas pressure conveying pipeline at home and abroad, and the original pipeline needs to be modified in the bypass pipeline type; the bypass valve body type valve is often corroded and hardened, cannot be opened and is poor in durability.

Because the pipeline transportation in-process is inside to have pressure (malleation or negative pressure), no matter adopt above-mentioned which kind of form, all adopt the natural gravity to subside the mode and carry out solid-gas separation, do not can run through the whole full automatic operation of pipeline transportation under the condition that guarantees on-the-spot no dust reveals the pollution, and single sample volume is big and uncontrollable, follow-up still need carry out sample division work.

The sampling actions after the material is cut off by opening and closing the valve are all performed in various sampling forms, and the valve body is worn, and the valve core and the valve body are hardened, corroded and locked due to the fact that the valve body is directly used for cutting off the material flow under the loaded condition, so that the equipment is not durable, and needs to be maintained and replaced frequently.

Especially when adopting the artifical mode of opening and close of bypass valve body to sample, the human factor not only can't in time open and close the valve and cause strong dust pollution, causes the influence to the representativeness of sample, has corrosive material to reveal and the pressure expansion causes the personal safety injury when the body breaks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing one kind: the pressure separation type powder sampling machine can automatically take gas-powder mixtures for a pressure conveying pipeline penetrating through the whole process and the cross section of the pipeline, and then carries out cyclone centrifugal settling separation by utilizing the aerodynamic principle, so that the valve body carries out no-load work, only powder granular samples are reserved after automatic environment-friendly release of pressure gas, and the samples are automatically weighed.

The purpose of the utility model is realized like this: the sampling machine comprises a sampling pipe, a sampling pipe seat, a feeding combination valve, a sample catcher, a heat insulation and heat preservation box body, a pressure aspirator, an air inlet combination valve, a pneumatic valve body control group, a sample unloading combination valve, an equipment outer box body, a sample weighing pipe, a PLC control unit and a connecting pipeline.

The pressure separation type powder sampling machine is assembled by the following parts: the sample catcher is placed in the heat insulation and preservation box body, the feeding combination valve is connected to the sample catcher front end, the pressure aspirator is connected to the upper end, the unloading combination valve is connected to the lower extreme, the sample weighing pipe is connected to unloading combination valve lower extreme, the sampling pipe vertically opens jaggedly (the maximum granularity of breach width according to the material), the front end inserts pipeline cross-section central part through the sampling tube socket, feeding combination valve is connected to the rear end, the pneumatic valve body control group of PLC the control unit program control passes through the opening and closing of each combination valve of pneumatic hose control, the PLC the control unit is placed with the equipment outer box body side by side, all the other parts are all installed in the equipment outer box.

Pressure separate type powder sampling machine beneficial effect, adopted above-mentioned scheme, when the pipeline transportation material, the sequence action through each combination valve of program control makes each valve body no-load work, will have the gas powder mixture of pressure and send into the sample trap through the longitudinal opening of sampling pipe, utilize gas mixture whirlwind separation principle to carry out solid-gas separation, the required a certain amount of sample is preserved after the pressure release to carry out automatic weighing to the sample, accomplished full automatic operation and taken representative sample and avoided the dust to reveal the pollution.

The pressure separation type powder sampling machine comprises the following important components: the sample trap is of a two-stage cyclone separator series combined structure, the size of the separator is designed according to the pressure, flow, caliber and solid-gas ratio of a pipeline, when the device works, the opening and closing of the feeding combined valve and the pressure suction device are controlled to enable a solid-gas mixture to enter the sample trap through the sampling pipe to be centrifugally separated and then collect a sample, and after sampling is finished each time, the opening and closing of the air inlet combined valve are controlled to purge the interior of the device and the valve body by utilizing an on-site air source, so that sample pollution is avoided and the durability of the valve body is improved.

The other important part of the pressure separation type powder sampler is as follows: the sample weighing tube adopts material pipe, weighing sensor, sample to turn over board and flap controller to constitute, and PLC control unloads a appearance combination valve and opens, and the sample of keeping in the sample trap falls into the sample weighing tube, in time measures the sample volume of this taking, then turns over the board rotation in the weighing tube and puts into the sample jar with the sample, borrows this for the concept of relevant managers with clear and definite sample volume.

Pressure disconnect-type powder sampling machine during operation, after setting up suitable each part operating parameter through built-in PLC procedure, automatic start, at first utilize the pressurized air source to carry out the self-cleaning action, then control sampling machine feeding combination valve is opened, utilize pipeline internal pressure and pressure aspirator's joint action to carry out solid gas separation in inhaling the sample trap with solid gas mixture, pressure environmental protection is discharged, weigh, unload appearance, inside is from blowing down, if because the temporary interruption of pipeline material flow leads to a certain time not to adopt the sample, PLC can controlgear mend and adopts the action until adopting the sample, so, reach the utility model discloses a purpose.

The advantages are that: 1. the longitudinal opening sampling pipe extends into the central part of the material conveying pipe, so that automatic sampling can be performed throughout the whole conveying process, and the sample representativeness is strong; 2. the sample pollution is avoided through a built-in purging program, each valve body does not work under load, and the durability of the device is improved; 3. pressure release and discharge are environment-friendly, and no dust pollution is caused on site; 4. the full-automatic operation can be realized, the labor intensity of workers is reduced, and personal injury is avoided; 5. the single-time sample amount is adjustable, the numerical value of the sample amount is displayed in real time, and the work of dividing the sample after manual sampling is avoided; 6. when the device is installed, only a round hole with the diameter of 40mm needs to be formed in the conveying pipeline, the sampling pipe is inserted into the round hole, and the sampling pipe seat is welded on the round hole, so that the workload of the original pipeline modification is very small; 7. the outside of the sample catcher is wrapped by a heat insulation material, so that the condensation and absorption of the external temperature on the water of the sample are avoided, the representativeness of the sample is improved, and the water vapor condensation and scale deposition in the equipment are avoided.

Drawings

Fig. 1 is a structural diagram of the pressure separation type powder sampling machine of the utility model.

In the figure, 1, a sampling pipe, 2, a sampling pipe seat, 3, a feeding combined valve, 4, a sample catcher, 5, a heat insulation and preservation box body, 6, a pressure aspirator, 7, an air inlet combined valve, 8, a pneumatic valve body control group, 9, a sample unloading combined valve, 10, an equipment outer box body, 11, a sample pipe, 12, a PLC control unit, 13, a turning plate controller, 14, a sample turning plate, 15, a weighing sensor, 16, a connecting pipeline, 17 and a field material conveying pipeline.

Wherein: 11. the sample weighing tube is composed of a sample tube 13, a flap controller 14, a sample flap 15 and a weighing sensor.

Detailed Description

Example 1: this sampling machine includes: the sampling pipe 1, the sampling pipe seat 2, the feeding combination valve 3, the connecting pipeline 16 and all the parts form the front end part of the sampling machine, wherein the sampling pipe seat is welded on a field material conveying pipeline 17, the sampling pipe is inserted into the center inside the field material conveying pipeline 17 through the sampling pipe seat, the front end of the feeding combination valve 3 is connected with the sampling pipe 1, and the rear end of the feeding combination valve is connected with a sampling machine main body through the connecting pipeline 16.

The sampler main body includes: the device comprises a sample catcher 4, a heat insulation and preservation box body 5, a pressure aspirator 6, an air inlet combined valve 7, a pneumatic valve body control group 8 and a sample unloading combined valve 9, wherein the sample catcher is wrapped in the heat insulation and preservation box body, the upper part of the sample catcher is connected with the pressure aspirator, the lower part of the sample catcher is connected with the sample unloading combined valve 9, the front end of the sample catcher is connected with a feeding combined valve 3, the rear end of the sample catcher is connected with the air inlet combined valve 7, and a gas control valve group 8 is arranged on one.

Example 2: the sampler sample weighing pipe is a complete component consisting of a sample pipe 11, a flap controller 13, a sample flap 14 and a weighing sensor 15, the upper part of the sample weighing pipe is connected with a sample unloading combination valve 9 of the sampler main body, and the lower part of the sample weighing pipe is connected with a sample tank prepared by a user.

Example 3: the sampling machine main part and the sample weighing pipe are all installed in the outer box body 10 of the equipment, the PLC control unit 12 is installed on one side of the outer box body of the equipment, so, the pressure separation type powder sampling machine is complete with the front end part of the sampling machine.

The basic working steps of the sampling machine are as follows: when materials are conveyed inside the on-site material conveying pipeline 17, the PLC control unit 12 starts the feeding combination valve 3 and the air inlet combination valve 7 through a built-in control program, the feeding combination valve and the air inlet combination valve are opened for a period of time and then closed, so that air-powder mixture enters the sample catcher 4 for centrifugal settling and pressure reduction separation, gas is discharged to the atmosphere through the discharge port of the pressure suction device 6 in an environment-friendly manner, and solid powder is temporarily stored inside the sample catcher 4.

The basic working steps of the sampling machine are as follows: the PLC control unit 12 opens the sample unloading combination valve 9 according to a set program to enable the solid sample to enter the sample weighing pipe, the weighing sensor 15 outputs a signal to enter an arithmetic unit in the PLC control unit 12 to store a result and display a weight value on an interface of the arithmetic unit, and then the turning plate controller 13 controls the sample turning plate 14 to turn over to pour the solid sample into a sample tank of a user.

The basic working steps of the sampling machine are as follows: and the PLC control unit 12 opens the air inlet combination valve 7 according to a set program for a period of time to purge the interior and the valve body of the sampling machine, and then closes all the valves, so that the single sampling action is finished.

The basic working steps of the sampling machine are as follows: the PLC control unit 12 repeats the actions of the basic working steps 1-3 at intervals according to a set program until the interior of the on-site material conveying pipeline 17 is stopped from feeding, and then the on-site material conveying pipeline is automatically stopped to finish the automatic sampling of the whole process.

The sampling machine controls the time for opening the air inlet combination valve 7 and the feeding combination valve 3 in the working process, so that the pressure gas cleans the internal cavities of the equipment valve body and the sample catcher 4 in time, the unloaded opening and closing of the valve body are ensured, and the pollution of a material sample is avoided.

Claims

1. A pressure separation type powder sampling machine is characterized in that: the sampler comprises a sampling pipe, a sampling pipe seat, a feeding combination valve, a sample catcher, a heat insulation and heat preservation box body, a pressure aspirator, an air inlet combination valve, a pneumatic valve body control group, a sample unloading combination valve, an equipment outer box body, a sample weighing pipe, a PLC control unit and a connecting pipeline, wherein the PLC is used for controlling compressed air to sweep so that the valve body does not carry load, the feeding combination valve is used for opening and closing automatic sampling, a solid-gas mixture is enabled to pass through the sample catcher of the cyclone separation structure to collect a sample, and the sample is weighed through the sample weighing pipe.

2. The pressure separation type powder sampling machine according to claim 1, characterized in that: a sampling pipe seat is connected with a field conveying pipeline, and a sampling pipe with a longitudinal opening is inserted into the central part of the section of the field conveying pipeline through the sampling pipe seat.

3. The pressure separation type powder sampling machine according to claim 1, characterized in that: the sample catcher adopts a combined structure of series connection of two-stage cyclone separators.

4. The pressure separation type powder sampling machine according to claim 1, characterized in that: the upper end of the sample catcher is connected with a pressure aspirator, and the gas is discharged into the atmosphere through a discharge port of the pressure aspirator after rising.

5. The pressure separation type powder sampling machine according to claim 1, characterized in that: the sample catcher is arranged in the heat insulation and insulation box body to avoid the influence of the external temperature and the moisture on the moisture of the sample and avoid the condensation of the internal sample.

6. The pressure separation type powder sampling machine according to claim 1, characterized in that: the PLC is used for controlling the action time of the air inlet combination valve and the feeding combination valve, and the pressure air source is used for purging the interior of the equipment and the valve body, so that the sample pollution is avoided, and the valve body works in an unloaded mode.

7. The pressure separation type powder sampling machine according to claim 1, characterized in that: the sample weighing pipe is formed by adopting a material pipe, a weighing sensor, a sample turning plate and a turning plate controller, and is integrally formed with the sampling machine body, so that the sample weighing is automatically realized.