CN111086780B

CN111086780B - Polymer particle storage tank and sampling method

Info

Publication number: CN111086780B
Application number: CN202010193691.7A
Authority: CN
Inventors: 张英超; 李成杰; 李国福; 胡静; 袁金秀
Original assignee: Weifang University of Science and Technology
Current assignee: Weifang University of Science and Technology
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-07-14
Anticipated expiration: 2040-03-19
Also published as: CN111086780A

Abstract

The invention discloses a polymer particle storage tank, which relates to the technical field of polymer particle storage and comprises a tank body and a sampling device, wherein the sampling device comprises a sampling cylinder vertically and slidably connected to the bottom of the tank body, a plurality of spirally-arranged rotary-cut blades are arranged at the top port of the sampling cylinder, the rotary-cut blades are arranged at intervals and incline towards the center of the sampling cylinder, the bottom port of the sampling cylinder is connected with a cylinder plug or a sample storage device, a lifting mechanism is arranged at the bottom of the tank body, a rotating mechanism is connected onto the lifting mechanism, the rotating mechanism is driven by the lifting mechanism to vertically move, the sampling cylinder is connected onto a rotating part of the rotating mechanism, and the sampling cylinder is driven by the rotating mechanism to rotate. The polymer particle storage tank solves the technical problem that polymer particles stored in the prior art are tedious to sample, realizes quantitative and stable sampling, accurately controls the sampling quantity, and cannot influence the environment in the tank body; the invention also provides a sampling method using the polymer particle storage tank.

Description

Polymer particle storage tank and sampling method

Technical Field

The invention relates to the technical field of polymer particle storage, in particular to a special storage tank for polymer particles with a sampling function.

Background

The high polymer material includes plastic, rubber, fiber, film, adhesive, paint, etc. Among them, plastics, synthetic fibers and synthetic rubbers, which are called as three major synthetic materials of modern polymers, have become important materials essential for national economic construction and people's daily life. Before processing, high polymer materials are synthesized, monomers are synthesized into polymers to be granulated to form high polymer particles (hereinafter referred to as materials), the average particle size of the materials is different from micron to millimeter, and the materials are usually stored in a storage tank in a sealing manner.

The material needs regular sampling test and participates in the experiment, consequently need follow the storage tank in getting the material regularly, and the current mode is the discharge gate that directly passes through the storage tank bottom, utilizes the discharger ejection of compact, and such mode has following problem:

1. the discharger has large discharge amount, so that the taken-out materials are too much and waste is caused.

2. The discharge port has a large caliber, the high-frequency opening and closing of the discharge port can destroy the pressure balance in the storage tank, and the external gas can easily enter to influence the quality of the material.

3. The high frequency of getting the material influences the life-span of equipment.

Disclosure of Invention

In view of the above drawbacks, the present invention provides a polymer particle storage tank, which aims to solve the technical problem of complicated sampling of polymer particles stored in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a polymer granule storage tank, which comprises a tank body, the top of the jar body is equipped with the feed inlet, the bottom of the jar body is equipped with the discharge gate, sampling device is installed to the bottom of the jar body, sampling device includes vertical sliding connection in the sampler barrel of jar body bottom, the top port department of sampler barrel is equipped with the rotary-cut leaf of a plurality of spiral arrangement, a plurality of rotary-cut leaf interval sets up, and incline towards the center of sampler barrel, the bottom port of sampler barrel is connected with section of thick bamboo stopper or sample storage device, elevating system is installed to jar body bottom, the last rotary mechanism that is connected with of elevating system, rotary mechanism vertical removal under elevating system's drive, the sampler barrel is connected on rotary part of rotary mechanism, the sampler.

Wherein, rotary mechanism includes the mounting panel, and the rigid coupling has the link on the mounting panel, and the sampling tube suit is connected on the link, and coaxial rigid coupling has first bevel gear on the sampling tube, installs the motor on the mounting panel, and coaxial rigid coupling has the second bevel gear with first bevel gear engaged with in the drive shaft of motor.

The lifting mechanism comprises a vertically arranged rack, the top end of the rack is fixedly connected to the bottom of the tank body, a connecting shaft is rotatably mounted on the connecting frame, and a third bevel gear meshed with the first bevel gear and a cylindrical gear meshed with the rack are coaxially and fixedly connected to the connecting shaft.

Wherein, vertical slidable mounting has the guide bar on the mounting panel, and the both ends of guide bar all are connected with the rack through the connecting plate.

Wherein, the rack is located between guide bar and the sampling tube.

Wherein, the outer wall of the top of the sampling tube is provided with a helical blade.

Wherein, the bottom of the tank body is provided with a connecting sleeve, the connecting sleeve is internally provided with a sliding sleeve, the sampling tube is sheathed in the sliding sleeve, and the top end of the connecting sleeve is conical.

Wherein, the sampling tube is provided with an observation window.

Wherein, a vibration device is arranged on the tank body.

The invention solves another problem of realizing continuous sampling, and a sampling method applying the polymer particle storage tank comprises the following steps:

s1, controlling a motor to rotate forwardly and start, enabling a cylindrical gear to ascend along a rack, enabling materials to continuously enter a sample storage device through a sampling cylinder, and stopping until the cylindrical gear reaches the top end of the rack;

s2, controlling the motor to rotate reversely, so that the cylindrical gear descends to an initial position along the rack;

s3, starting the vibration device, stopping after vibrating for t1 time, controlling the motor to rotate forwardly to start, and repeating the steps S1 and S2;

s4, in the step S3, when the cylindrical gear rises, the falling condition of the materials in the sampling cylinder is observed through the observation window, when the materials do not fall, the motor is controlled to reset the cylindrical gear, the vibration device is started, the vibration time is t2, and t2 is larger than t 1.

After the technical scheme is adopted, the invention has the beneficial effects that:

the macromolecular particle storage tank comprises a tank body and a sampling device arranged at the bottom of the tank body, wherein the sampling device comprises a sampling cylinder vertically connected to the bottom of the tank body in a sliding manner, a plurality of spirally arranged rotary-cut leaves are arranged at the top port of the sampling cylinder at intervals and incline towards the center of the sampling cylinder, a cylinder plug or a sample storage device is connected to the bottom port of the sampling cylinder, a lifting mechanism is arranged at the bottom of the tank body and is connected with a rotating mechanism, the rotating mechanism is driven by the lifting mechanism to vertically move, the sampling cylinder is connected to a rotating part of the rotating mechanism and rotates under the driving of the rotating mechanism, the sampling cylinder can rotate and slide upwards under the combined action of the rotating mechanism and the lifting mechanism, the rotary-cut leaves can stir materials, and the stirred materials continuously enter the sampling cylinder through gaps among the four rotary-cut leaves, thereby realize the ration output material that lasts, both realized having realized the accuracy of exporting the material and controlled, can not cause the influence to the environment in the jar body again.

Because rotary mechanism includes the mounting panel, the rigid coupling has the link on the mounting panel, and the sampling tube suit is connected on the link, and coaxial rigid coupling has first bevel gear on the sampling tube, installs the motor on the mounting panel, and coaxial rigid coupling has the second bevel gear who meshes with first bevel gear on the drive shaft of motor. The lifting mechanism comprises a vertically arranged rack, the top end of the rack is fixedly connected to the bottom of the tank body, a connecting shaft is rotatably mounted on the connecting frame, and a third bevel gear meshed with the first bevel gear and a cylindrical gear meshed with the rack are coaxially and fixedly connected to the connecting shaft. Power is by the motor input to through first bevel gear output to the sampler barrel, realize the rotation of sampler barrel, export to cylindrical gear through third bevel gear simultaneously, make cylindrical gear can reciprocate along the rack, realize raising and lowering functions, realize the precession function of sampler barrel promptly, make whole device only need an input, structural more concentrate, use and maintenance more convenient, regulate and control convenience more.

Because vertical slidable mounting has the guide bar on the mounting panel, the both ends of guide bar all are connected with the rack through the connecting plate, improve the stability that the mounting panel reciprocated through the sliding fit of guide bar and mounting panel, the condition that skew or rocked when avoiding cylindrical gear and gear engagement appears.

Because the rack is located between guide bar and the sampling tube for the power that cylindrical gear and rack transmission cooperation produced can be more close to the central point of mounting panel and put, has further promoted the stability that the mounting panel goes up and down.

Because the top outer wall of sampling tube is equipped with helical blade, promotes the precession ability of sampling tube through helical blade.

Because the bottom of the tank body is provided with the connecting sleeve, the connecting sleeve is internally provided with the sliding sleeve, the sampling tube is sleeved in the sliding sleeve, and the top end of the connecting sleeve is conical, so that the material adhered on the outer wall of the sampling tube can be blocked by the conical end part and can be guided away from the sampling tube along the conical inclined plane, thereby realizing the cleaning of the outer surface of the sampling tube and avoiding the material particles from entering the sliding sleeve to influence the performance of the sliding sleeve.

Because be equipped with the observation window on the sampling tube, can observe the state of material circulation in the sampling tube and the state that the material piles up in the sampling tube through the observation window, make things convenient for artificial monitoring.

Because the last vibrating device that installs of jar body, can be with the internal material of jar even reality again through vibrating device, especially when the material is pressed to be knotted, the peripheral region of sampling tube after the sample many times no longer has the material, starts vibrating device this moment for the material is repacked around the sampling tube under the vibration effect, thereby makes the sampling tube can continue to sample.

According to the sampling method using the polymer particle storage tank, the falling condition of the material in the sampling cylinder is observed through the observation window, when the material does not fall, the cylindrical gear is reset through the control motor, then the vibrator is started, the vibration time is prolonged, the material can be continuously output, and the situation that the sampling cylinder cannot contact the material due to the serious material compaction condition is avoided.

In conclusion, the polymer particle storage tank provided by the invention solves the technical problem of tedious sampling of polymer particles stored in the prior art, realizes quantitative and stable sampling, accurately controls the sampling amount, and does not influence the environment in the tank body, and meanwhile, the polymer particle storage tank provided by the invention has the characteristics of centralized structure, low cost, and convenience in use, maintenance and regulation; the sampling method solves the problem that the sampling cylinder cannot contact the material due to serious material compaction, and realizes continuous sampling of the material.

Drawings

FIG. 1 is a schematic structural diagram of a sampling device of a polymer particle storage tank according to the present invention;

FIG. 2 is a schematic diagram of the overall structure of a polymer particle storage tank according to the present invention;

fig. 3 is a schematic view of the construction of the sampling cartridge of fig. 1.

In the figure, a tank body 1, a connecting sleeve 10, a sliding sleeve 11, a vibrating device 12, a sampling device 2, a sampling cylinder 20, a rotary cutting blade 200, a helical blade 201, an observation window 202, a limiting ring 203, a rotating mechanism 21, a mounting plate 210, a motor 211, a connecting frame 212, a first bevel gear 213, a second bevel gear 214, a lifting mechanism 22, a third bevel gear 220, a connecting shaft 221, a cylindrical gear 222, a rack 223 and a guide rod 224.

Detailed Description

The invention is further elucidated with reference to the drawing.

The directions referred to in the present specification are all based on the directions of the polymer particle storage tank of the present invention during normal operation, and the directions of the polymer particle storage tank during storage and transportation are not limited, but only represent relative positional relationships, and do not represent absolute positional relationships.

As shown in fig. 1, fig. 2 and fig. 3 jointly, the polymer particle storage tank includes a jar body 1, and the top of jar body 1 is equipped with the feed inlet, and the bottom of jar body 1 is equipped with the discharge gate, and sampling device 2 is installed to the bottom of jar body 1, and sampling device 2 includes sampler barrel 20, elevating system 22 and rotary mechanism 21.

As shown in fig. 1, fig. 2 and fig. 3, a sliding sleeve 11 is installed at a bottom of a tank body 1, a sampling barrel 20 is sleeved in the sliding sleeve 11, so that the sampling barrel 20 can slide up and down along the sliding sleeve 11, a top end of the sampling barrel 20 is located in the tank body 1, a bottom end of the sampling barrel 20 is located outside the tank body 1, the sampling barrel 20 is of a hollow structure, four spiral-arranged rotary-cut blades 200 are arranged at a top port of the sampling barrel 20, gaps exist between side portions of two adjacent rotary-cut blades 200, the four rotary-cut blades 200 incline towards a center of the sampling barrel 20, and gaps also exist between top ends of the four rotary-cut blades 200, so that when the sampling barrel 20 rotates, the rotary-cut blades 200 can stir up materials, and the stirred materials can enter the sampling barrel 20 through the gaps between the four rotary-cut blades 200.

As shown in fig. 1, the bottom port of the sampling tube 20 is connected with a tube plug or a sample storage device, the tube plug is used for plugging the bottom port of the sampling tube 20 and is used for sampling with small amount, so that the material entering the sampling tube 20 is stored in the sampling tube, and after reaching a certain amount, the sampling is stopped, the tube plug is taken down and the sampled material is transferred to other containers, and the other function of the tube plug is used for cutting off the communication between the sampling tube 20 and the outside when the sampling device 2 does not work, thereby realizing the sealing of the tank body 1. The sample storage device is a sampling bottle, and the bottle mouth of the sampling bottle is connected with the bottom port of the sampling cylinder 20 through a soft conveying pipe (such as a corrugated hose), so that the material entering the sampling cylinder 20 can continuously enter the sampling bottle, and the sampling bottle can also be replaced by other containers.

As shown in fig. 1, the rotating mechanism 21 is driven by the lifting mechanism 22 to move vertically, the sampling tube 20 is connected to the rotating part of the rotating mechanism 21, the sampling tube 20 is driven by the rotating mechanism 21 to rotate, and under the combined action of the rotating mechanism 21 and the lifting mechanism 22, the sampling tube 20 can slide upwards or downwards while rotating.

As shown in fig. 1, the rotating mechanism 21 preferred in this embodiment includes a mounting plate 210, a motor 211 is mounted on the mounting plate 210, a connecting frame 212 is fixedly connected to the mounting plate 210, the connecting frame 212 is an -shaped frame and includes a middle plate and wing plates vertically and fixedly connected to two sides of the middle plate, a first mounting hole is formed in the middle plate, the first mounting hole is coaxially disposed with the sliding sleeve 11, a second mounting hole and a third mounting hole are respectively formed in the two wing plates, the second mounting hole and the third mounting hole are coaxially disposed, the sampling cylinder 20 is rotatably connected to the first mounting hole, a first bevel gear 213 is coaxially and fixedly connected to the sampling cylinder 20, a driving shaft of the motor 211 is rotatably connected to the second mounting hole, a second bevel gear 214 is coaxially and fixedly connected to the driving shaft of the motor 211, a connecting shaft 221 is mounted in the third mounting hole, one end of the connecting shaft 221 is coaxially and fixedly connected to a third bevel gear 220, and the other end of the connecting shaft 221 is coaxially and fixedly connected to a cylindrical gear 222, wherein bearings are mounted between the sampling cylinder 20 and the first mounting hole, the driving shaft of the motor 211 and the second mounting hole.

The lifting mechanism 22 comprises a vertically arranged rack 223, the top end of the rack 223 is fixedly connected to the bottom of the tank body 1, and the cylindrical gear 222 is meshed with the rack 223. When the motor 211 is started, the sampling cylinder 20 rotates through the transmission of the first bevel gear 213 and the second bevel gear 214, and the connection shaft 221 rotates due to the transmission of the first bevel gear 213 and the third bevel gear 220, so that the cylindrical gear 222 moves along the rack 223, and the whole mounting plate 210 is driven to move, that is, the up-and-down movement of the sampling cylinder 20 is realized. When the motor 211 rotates forward, the cylindrical gear 222 moves upward, the sampling tube 20 rotates upward, the rotating rotary-cut blade 200 continuously stirs the materials, and the stirred materials enter the sampling tube 20. Conversely, when the motor 211 rotates reversely, the cylindrical gear 222 moves downwards, and the sampling tube 20 is fed downwards, so that resetting is realized. The precession of the sampling tube 20 can be realized by using one motor 211, and the device has low cost and convenient maintenance. The speed ratio of the rotation action and the up-and-down movement action of the sampling tube 20 is determined by adjusting the rotation speed and the rotation direction of the motor 211 and selecting the first bevel gear 213, the second bevel gear 214, the third bevel gear 220 and the transmission ratio of the cylindrical gear 222 and the rack 223, so that a high-efficiency sampling effect can be obtained.

In other modes, the rotating mechanism 21 includes a motor 211, the motor 211 is preferably a stepping motor or a servo motor, the motor 211 is installed on the mounting seat, the motor 211 and the sampling cylinder 20 are in gear transmission, the lifting mechanism 22 can adopt an electric push rod, a driving shaft of the electric push rod is fixedly connected with the mounting seat, the electric push rod drives the fixing seat to lift, that is, the lifting of the sampling cylinder 20 is realized, and meanwhile, the rotating mechanism 21 can continuously drive the sampling cylinder 20 to rotate.

As shown in fig. 1, the mounting plate 210 is provided with two fixing blocks, a shaft sleeve is arranged on each fixing block, the guide rods 224 are vertically slidably connected in the shaft sleeve, two ends of each guide rod 224 are fixed to the racks 223 through connecting plates, and the stability of the mounting plate 210 in up-down movement is improved through the guide rods 224. The situation that the cylindrical gear 222 is deviated or shaken when being meshed with the gear is avoided. Preferably, the rack 223 is located between the guide bar and the sampling tube 20, so that the force generated by the driving fit of the cylindrical gear 222 and the rack 223 can be closer to the center of the mounting plate 210. The lifting stability of the mounting plate 210 is further improved.

Preferably, the helical blade 201 is welded or integrally formed on the outer wall of the top of the sampling tube 20, and the precession capability of the sampling tube 20 is improved by the helical blade 201, so that the sampling tube is particularly suitable for the case that the material is seriously caked. A limiting ring 203 is arranged below the helical blade 201, and the limiting ring 203 is fixedly sleeved on the outer part of the sampling tube 20.

Preferably, the connecting sleeve 10 is arranged at the top of the tank body 1, the sampling barrel 20 is sleeved in the sliding sleeve 11, the sliding sleeve 11 is fixed in an inner hole of the connecting sleeve 10, the top end of the connecting sleeve 10 is conical, so that the conical end part is pressed against the outer wall of the sampling barrel 20 at any time, the material adhered to the outer wall of the sampling barrel 20 can be blocked by the conical end part and guided away from the sampling barrel 20 along the conical inclined plane, thereby cleaning the outer surface of the sampling barrel 20 is realized, and the material particles are prevented from entering the sliding sleeve 11 and affecting the performance of the sliding sleeve 11.

Preferably, the sampling tube 20 is provided with a viewing window 202. The material circulation state in the sampling cylinder 20 and the material accumulation state in the sampling cylinder 20 can be observed through the observation window 202, the observation window 202 is a long round through hole arranged on the sampling cylinder 20, the long round through hole extends along the axial direction of the sampling cylinder 20, a transparent plate is arranged in the long round through hole, and preferably, scales are arranged on the transparent plate.

Preferably, the tank body 1 is provided with a vibrating device 12, the vibrating device 12 is preferably a linear vibrator, the material in the tank body 1 can be homogenized again through the vibrating device 12, especially when the material is compacted, the material does not exist in the peripheral area of the sampling cylinder 20 after multiple sampling, at this time, the vibrating device 12 is started, so that the material is refilled around the sampling cylinder 20 under the vibrating action, and the sampling cylinder 20 can continue sampling.

The sampling method comprises the following steps:

in the initial position, the cylindrical gear 222 is located at the bottom matching position of the rack 223, the motor 211 is controlled to rotate forward and start, the cylindrical gear 222 ascends along the rack 223, the sampling cylinder 20 rotates while ascending, and the rotary cutting blade 200 continuously stirs and disperses materials, so that the materials continuously pass through the sampling cylinder 20 and enter the sample storage device, and the material stops flowing until the cylindrical gear 222 reaches the top end of the rack 223;

secondly, controlling the motor 211 to rotate reversely, so that the cylindrical gear 222 descends to an initial position along the rack 223;

thirdly, starting the vibrator, stopping after vibrating for t1 (3-5 min), controlling the motor 211 to rotate forwardly and starting, and repeating the step 1 and the step 2;

step 3, when the cylindrical gear 222 rises, observing the falling condition of the material in the sampling tube 20 through the observation window 202, resetting the cylindrical gear 222 when the material does not fall, starting the vibrator, wherein the vibration time is t2, t2 is more than t1, and at the moment, t2 is 5-10 min; when the material in the tank body 1 is less, the cycle of positive and negative rotation of the motor 211 is controlled, so that the highest position of the up-and-down movement of the sampling cylinder 20 is adjusted, and the height of the material in the tank body 1 is suitable for the material.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims

1. A polymer particle storage tank comprises a tank body, wherein a feed inlet is arranged at the top of the tank body, a discharge outlet is arranged at the bottom of the tank body, it is characterized in that the bottom of the tank body is provided with a sampling device, the sampling device comprises a sampling cylinder which is vertically connected with the bottom of the tank body in a sliding way, a plurality of spirally arranged rotary cutting blades are arranged at the top port of the sampling tube, the rotary cutting blades are arranged at intervals and incline towards the center of the sampling tube, the bottom port of the sampling cylinder is connected with a cylinder plug or a sample storage device, the bottom of the tank body is provided with a lifting mechanism, the lifting mechanism is connected with a rotating mechanism which moves vertically under the driving of the lifting mechanism, the sampling tube is connected to the rotating part of the rotating mechanism, and the sampling tube is driven by the rotating mechanism to rotate.

2. The polymer particle storage tank as claimed in claim 1, wherein the rotating mechanism comprises a mounting plate, a connecting frame is fixedly connected to the mounting plate, the sampling cylinder is sleeved and connected to the connecting frame, a first bevel gear is coaxially and fixedly connected to the sampling cylinder, a motor is mounted on the mounting plate, and a second bevel gear engaged with the first bevel gear is coaxially and fixedly connected to a driving shaft of the motor.

3. The polymer particle storage tank as claimed in claim 2, wherein the lifting mechanism comprises a vertically arranged rack, the top end of the rack is fixedly connected to the bottom of the tank body, a connecting shaft is rotatably mounted on the connecting frame, and a third bevel gear meshed with the first bevel gear and a cylindrical gear meshed with the rack are coaxially and fixedly connected to the connecting shaft.

4. The polymer particle storage tank of claim 3, wherein a guide rod is vertically slidably mounted on the mounting plate, and both ends of the guide rod are connected with the rack through connecting plates.

5. The polymeric particle storage tank of claim 4, wherein the rack is located between the guide rod and the sampling tube.

6. The polymer particle storage tank as claimed in any one of claims 1 to 5, wherein the outer wall of the top of the sampling tube is provided with a helical blade.

7. The polymer particle storage tank as claimed in claim 6, wherein the bottom of the tank body is provided with a connection sleeve, the connection sleeve is provided with a sliding sleeve, the sampling tube is sleeved in the sliding sleeve, and the top end of the connection sleeve is conical.

8. The polymeric particle storage tank of claim 3, wherein the sampling tube is provided with an observation window.

9. The polymer particle storage tank of claim 8, wherein the tank body is provided with a vibration device.

10. A sampling method using the polymer particle storage tank as claimed in claim 9, comprising the steps of:

s1, controlling the motor to rotate forwardly and start, enabling the cylindrical gear to ascend along the rack, enabling materials to continuously enter the sample storage device through the sampling cylinder, and stopping until the cylindrical gear reaches the top end of the rack;

s3, starting the vibration device, stopping after vibrating for t1 time, controlling the motor to rotate forwardly and starting, and repeating the steps S1 and S2;

s4, in the step S3, when the cylindrical gear rises, the falling condition of the materials in the sampling cylinder is observed through the observation window, when the materials do not fall, the motor is controlled to reset the cylindrical gear, the vibration device is started, and the vibration time is t2, wherein t2 is more than t 1.