A PTA granular material sampling device

Abstract

The invention discloses a PTA granular material sampling device, which belongs to the technical field of sampling devices. The sampling tank is connected to the side wall of the punching material tank through a sampling inclined tube, a sampling valve is arranged on the sampling inclined tube, the sampling tank is connected to the bottom of the punching material tank through a blowing tube, a blowing valve is arranged on the blowing tube, a material removal component is arranged inside the blowing tube, an annular filler is arranged inside the sampling tank, an air outlet elbow is arranged at the top of the sampling tank, a portable sampling device is arranged at the bottom of the sampling tank, and a filter is arranged at one end of the blowing tube close to the punching material tank. The invention solves the problems that the existing sampling design has dust at the front end of the sampling, which affects the sampling results, and the replacement of the waste bottom bag during sampling will cause dust to spread to the surrounding environment to pollute the environment and threaten the health of the sampling staff, and also cause product loss. The invention is mainly used in the sampling and detection of PTA granular materials.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, in particular to a PTA particle material sampling device. Background Art

[0002] PTA granules are white particles with a relatively uniform particle size. Their chemical name is 1,4-phthalic acid. They have a high melting point and can sublime. They are slightly soluble in hot ethanol and insoluble in many common solvents. They are widely used in a wide range of applications. In the production of polyester fibers, they react with ethylene glycol to form polyester, which is then spun into various fibers for clothing and home textiles. They can also be modified to meet special needs. In the field of plastic bottle manufacturing, the PET resin produced is used to make preforms and blow molded into bottles, which are widely used in food and beverage packaging. In film production, the polyester film produced has good mechanical, optical and barrier properties, which is used for packaging and can be made into functional films for electronics and other industries.

[0003] In the production scenario, paraxylene is used as raw material, and an oxidation reaction is carried out under high temperature, high pressure and catalyst to produce crude terephthalic acid, which is then refined by hydrogenation and purified under high temperature, high pressure and palladium / carbon catalyst, followed by crystallization separation, and finally dried to remove moisture and solvents, and packaged with suitable packaging materials according to specified specifications.

[0004] During the production process of PTA particles, quality control is crucial. In order to determine the frequency of product ingredients, rigorous testing and irregular sampling are required. Through professional testing methods and scientific sampling processes, various indicators of PTA particles, such as purity, particle size distribution, impurity content, etc., can be accurately analyzed to ensure that they meet relevant quality standards and production requirements. In the production process, pressurized nitrogen is used for material transportation. Pressurized nitrogen pushes PTA particles to flow in the pipeline at a stable pressure. This transportation method has many advantages. On the one hand, the inert nature of nitrogen can effectively prevent chemical reactions such as oxidation of PTA particles during transportation, ensuring the stability of product quality; on the other hand, pressurized nitrogen can make the material evenly and efficiently transported, avoiding agglomeration and blockage of particles, and ensuring the continuity and smoothness of production.

[0005] In the entire production process, powders are transported with the help of nitrogen. Product quality control is crucial to production, so it is necessary to regularly sample and test from the conveying pipeline. However, the current sampling design has serious drawbacks. When the sampling operation is carried out, the dust at the front end of the sampling needs to be discarded. Failure to discard it will affect the sampling results. The front end material must be removed in time. During the material removal process, a large amount of dust will spread to the surrounding environment. On the one hand, these floating dusts cause the product to be wasted, resulting in unnecessary increase in production costs. At the same time, if the powder attached to the inside of the sampler is not removed in time, it will also affect the accuracy of each sampling. On the other hand, replacing the waste bottom bag during sampling will cause dust to spread to the surrounding environment, polluting the environment and threatening the health of the sampling staff. It will also cause the problem of product loss. Dust is rampant in the surrounding environment, causing pollution to the environment and endangering the health of the sampling staff. Their risk of suffering from respiratory diseases has risen sharply, which undoubtedly poses a huge hidden danger to the life, health and safety of the staff, and seriously affects the stable production and sustainable development of the enterprise. Summary of the invention

[0006] The purpose of the present invention is to provide a PTA particle material sampling device to solve the problems in the existing sampling design proposed in the above background technology, such as dust at the sampling front end, which affects the sampling results, and the replacement of the waste bottom bag during sampling will cause dust to spread to the surrounding environment, polluting the environment and threatening the health of the sampling staff, and also causing product loss.

[0007] A PTA particle material sampling device comprises a raw material tank for flushing and a sampling tank, and is characterized in that: the sampling tank is connected to the side wall of the raw material tank for flushing through a sampling inclined tube, a sampling valve is arranged on the sampling inclined tube, the sampling tank is connected to the bottom of the raw material tank for flushing through a blowing pipe, a blowing valve is arranged on the blowing pipe, a material removal component is arranged inside the blowing pipe, an annular filler is embedded in the sampling tank, an air outlet elbow is arranged at the top of the sampling tank, a portable sampling device is arranged at the bottom of the sampling tank, and a filter is arranged at one end of the blowing pipe close to the raw material tank for flushing.

[0008] Preferably, the material removal assembly comprises a rod, a sleeve, a disturbance plate and a disturbance rod, the sleeve, the disturbance plate and the disturbance rod are connected together in sequence, the sleeve is arranged on the rod, and the rod is transversely arranged in the blowing pipe pipeline.

[0009] Preferably, a punching port is arranged on the top of the punching raw material tank, a ladder is arranged on the side of the punching raw material tank, and an operating platform is arranged on the punching raw material tank.

[0010] Preferably, the portable sampling device includes a sliding box, a sliding waste assembly and a sliding sampling assembly. The sliding box is arranged at the bottom of the sampling tank. The sliding box has a sliding waste assembly embedded in it and the sliding waste assembly is limited in the sliding box. The sliding sampling assembly slides on the sliding waste assembly and the sliding sampling assembly pushes the sliding waste assembly to move back and forth in the sliding box.

[0011] Preferably, the sliding box is composed of a flat plate, an L-plate, a limiting plate 1 and a limiting plate 2. L-plates are arranged on both sides of the bottom surface of the flat plate. The rear sides of the L-plates are connected to each other through limiting plate 1. Limiting plate 2 is arranged on the front end of the L-plate, and a material passing hole is arranged on the flat plate.

[0012] Preferably, the sliding waste assembly includes a slide plate, a bending shoulder rod, an internally threaded spiral tube and a waste bag, a through hole is arranged on the slide plate, an internally threaded spiral tube is arranged on the bottom of the slide plate, the internally threaded spiral tube is the same size as the through hole, the waste bag is spirally mounted on the internally threaded spiral tube, a magnet block is embedded around the through hole on the slide plate, the bending shoulder rod is symmetrically mounted on the slide plate along the center line of the slide plate, and a bar magnet is arranged on the slide plate between the bending shoulder rods, and the bar magnet is close to one side of the bending shoulder rod.

[0013] Preferably, the sliding sampling assembly includes an inner slide, two internally threaded spiral tubes and a sampling bottle. The inner slide slides between the bent supporting rods. Two through holes are arranged on the inner slide. Two magnet blocks are embedded around the two through holes on the inner slide. Two internally threaded spiral tubes are arranged on the bottom of the inner slide. The two internally threaded spiral tubes are the same size as the two through holes. The sampling bottle is spirally mounted on the two internally threaded spiral tubes.

[0014] Compared with the prior art, the technical effects and advantages of the present invention are:

[0015] The present invention arranges a material removal component inside the blowing pipe, and arranges a filter screen at one end of the blowing pipe close to the punching raw material tank. During ventilation, nitrogen in the punching raw material tank will be blown into the sampling tank through the blowing pipe to discharge water vapor inside the sampling tank, and at the same time drive the material removal component to vibrate the pipe wall, so that dust attached to the inner wall of the sampling tank and dust attached to the annular filler fall down, and at the same time, the vibration can also be transmitted to the filter screen to ensure the ventilation function of the filter screen.

[0016] The design of the portable sampling device can timely remove the dust at the front end of the sampling under closed conditions, and at the same time ensure that no dust spreads to the surrounding environment during sampling to threaten the health of the sampling staff. Compared with the prior art, such a clever design can be convenient and fast during sampling, and the internal structures of the portable sampling device cooperate with each other to achieve the function of taking materials at any time, which is incomparable to general elastic components, such as springs. The springs will produce elastic fatigue during long-term repeated expansion and contraction or torsion. After long-term use, the elasticity of the spring will gradually weaken. This is because the metal structure inside the spring slips and dislocates during repeated stress deformation, resulting in defects such as micro cracks inside the material, making it impossible for the spring to return to its original shape and performance, ultimately affecting its normal operation. At the same time, when the external excitation frequency is close to or equal to the natural frequency of the spring, the spring will resonate. This cannot be applied to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 For the present invention Figure 1 A magnified image of point A;

[0019] Figure 3 The internal structure of the blowpipe and the material removal assembly diagram of the present invention;

[0020] Figure 4 It is a combined diagram of the sliding box and the movable waste assembly of the present invention;

[0021] Figure 5 A perspective view of the sliding waste assembly and accessories of the present invention;

[0022] Figure 6 It is a stereoscopic view and a front view of the sliding sampling assembly of the present invention.

[0023] In the figure: 1. punching raw material tank; 2. sampling tank; 3. sampling inclined tube; 31. sampling valve; 32. injection valve; 4. material removal assembly; 14. annular filler; 15. air outlet elbow; 5. portable sampling equipment; 9. filter screen; 41. rod; 42. sleeve; 43. disturbance plate; 44. disturbance rod; 11. punching port; 12. ladder; 13. operating platform; 6. sliding box; 7. sliding waste assembly; 8. Sliding sampling assembly; 61. Flat plate; 62. L-plate; 63. Limiting plate 1; 64. Limiting plate 2; 65. Material passing hole; 71. Slide plate; 72. Bending lever; 73. Internally threaded spiral tube 1; 74. Waste bag; 75. Through hole 1; 76. Magnet block 1; 77. Bar magnet; 81. Internal slide plate; 82. Internally threaded spiral tube 2; 83. Sampling bottle; 84. Through hole 2; 85. Magnet block 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In one embodiment: see Figures 1 to 3A PTA particle material sampling device comprises a raw material tank 1 and a sampling tank 2, wherein the sampling tank 2 is a cyclone separation sampling tank, characterized in that: a material port 11 is arranged on the top of the raw material tank 1, a ladder 12 is arranged on the side of the raw material tank 1, which is convenient for the staff to take materials, an operating platform 13 is arranged on the raw material tank 1, which is convenient for the staff to take materials, the sampling tank 2 is connected to the side wall of the raw material tank 1 through a sampling inclined tube 3, a sampling valve 31 is arranged on the sampling inclined tube 3, the sampling tank 2 is connected to the bottom of the raw material tank 1 through a blowing pipe 3, a blowing valve 32 is arranged on the blowing pipe 3, the blowing valve 32 opens the blowing pipe 3 to let air in, and discharges the water vapor inside the sampling tank 2, a material removal component 4 is arranged inside the blowing pipe 3, The material removal component 4 inside the blowing tube 3 is fanned to make the dust attached to the inner wall of the sampling tank 2 and the dust attached to the annular filler 14 fall down, and at the same time, the vibration can also be transmitted to the filter screen 9 to ensure the ventilation of the filter screen. The functional sampling tank 2 is embedded with an annular filler 14 to filter PTA dust particles. An air outlet elbow 15 is arranged at the top of the sampling tank 2 to discharge water vapor. A portable sampling device 5 is arranged at the bottom of the sampling tank 2. The portable sampling device 5 can remove the front-end dust of the sampling in time under a closed condition, and at the same time ensure that no dust spreads to the surrounding environment during sampling to threaten the health of the sampling staff. A filter screen 9 is arranged at one end of the blowing tube 3 close to the punching raw material tank 1 to filter dust.

[0026] In one embodiment, see Figures 1 to 3 : Operations before sampling: The sampling valve 31 on the sampling inclined tube 3 is opened first, and the powder at the front end of the sampling inclined tube 3 enters the sampling tank 2 and enters the waste bag 74, and then the sampling valve 31 is closed, and then the blowing valve 32 is opened to let air into the blowing tube 3 to discharge the water vapor inside the sampling tank 2, and a material removal component 4 is arranged inside the blowing tube 3, and the material removal component 4 inside the blowing tube 3 is agitated, so that the dust attached to the inner wall of the sampling tank 2 and the dust attached to the annular filler 14 fall into the waste bag 74, and at the same time, the vibration can also be transmitted to the filter screen 9 to ensure that the filter screen is ventilated.

[0027] In one embodiment, see Figure 3 The material removal assembly 4 includes a rod 41, a sleeve 42, a disturbance sheet 43 and a disturbance rod 44, the sleeve 42, the disturbance sheet 43 and the disturbance rod 44 are connected together in sequence, the sleeve 42 is arranged on the rod 41, and the rod 41 is transversely arranged in the blowing pipe 3 pipeline.

[0028] In one embodiment, see Figures 4 to 6 : The portable sampling device 5 includes a sliding box 6, a sliding waste assembly 7 and a sliding sampling assembly 8. The sliding box 6 is arranged at the bottom of the sampling tank 2. The sliding box 6 is embedded with the sliding waste assembly 7 and the sliding waste assembly 7 is limited in the sliding box 6. The sliding sampling assembly 8 slides on the sliding waste assembly 7 and the sliding sampling assembly 8 pushes the sliding waste assembly 7 to move back and forth in the sliding box 6.

[0029] In one embodiment, see Figures 1 to 3 : Operation during sampling: The blowing valve 32 is closed to stop the air intake of the blowing tube 3. The staff pushes the sliding sampling assembly 8 to move the sliding waste assembly 7 away from the bottom discharge port of the sampling tank 2, and replaces the sliding sampling assembly 8 to the bottom discharge port of the sampling tank 2. The sliding sampling assembly 8 and the sliding waste assembly 7 are close to the bottom of the sliding box 6. The sampling valve 31 on the sampling inclined tube 3 is opened, and the powder in the punching raw material tank 1 enters the interior of the sampling tank 2 through positive pressure, and then enters the sliding sampling assembly 8.

[0030] In one embodiment, see Figures 1 to 3 : Sampling operation is completed: the sampling valve 31 on the sampling inclined tube 3 is closed, and no powder enters the sampling tank 2. Then the staff pulls back the sliding sampling assembly 8, and the sliding sampling assembly 8 drives the sliding waste assembly 7 to return to its original position. The staff removes the sliding sampling assembly 8 from the sliding waste assembly 7. At this time, the sliding waste assembly 7 is precisely at the bottom of the discharge port of the sampling tank 2, waiting for the next sampling operation.

[0031] In one embodiment, see Figure 4 The sliding box 6 is composed of a flat plate 61, an L plate 62, a limit plate 1 63 and a limit plate 2 64. L plates 62 are arranged on both sides of the bottom surface of the flat plate 61. The rear sides of the L plates 62 are connected to each other through limit plates 1 63. A limit plate 2 64 is arranged on the front end of the L plate 62. A material passing hole 65 is arranged on the flat plate 61. A sliding waste component 7 is arranged for limiting inside the structure. The flat plate 61 is made of iron.

[0032] In one embodiment, see Figure 5 The sliding waste assembly 7 includes a slide plate 71, a bending shoulder rod 72, an internally threaded spiral tube 73 and a waste bag 74. A through hole 75 is arranged on the slide plate 71, and an internally threaded spiral tube 73 is arranged on the bottom of the slide plate 71. The internally threaded spiral tube 73 is the same size as the through hole 75. The waste bag 74 is spirally installed on the internally threaded spiral tube 73. A magnet block 76 is embedded around the through hole 75 on the slide plate 71. The bending shoulder rod 72 is symmetrically installed on the slide plate 71 along the center line of the slide plate 71. A bar magnet 77 is arranged on the slide plate 71 between the bending shoulder rods 72. The bar magnet 77 is close to one side of the bending shoulder rod 72. The bar magnet 77 can absorb the inner slide plate 81. The inner slide plate 81 is made of iron. Under the traction of the inner slide plate 81, the slide plate 71 can move with it.

[0033] In one embodiment, see Figure 6The sliding sampling assembly 8 comprises an inner slide 81, an inner threaded spiral tube 82 and a sampling bottle 83. The inner slide 81 slides between the bent supporting rods 72. A through hole 84 is arranged on the inner slide 81. Two magnet blocks 85 are embedded around the through hole 84 on the inner slide 81. An inner threaded spiral tube 82 is arranged on the bottom of the inner slide 81. The inner threaded spiral tube 82 is the same size as the through hole 84. The sampling bottle 83 is spirally installed on the inner threaded spiral tube 82. The structure is disassembled and easy to use. The movement of the sliding sampling assembly 8 can not only accurately remove the sliding waste assembly 7 but also accurately reset the sliding waste assembly 7.

Claims

1. A PTA granular material sampling device, comprising a raw material tank (1) and a sampling tank (2), characterized in that: The sampling tank (2) is connected to the side wall of the punching raw material tank (1) through a sampling inclined tube (3), a sampling valve (31) is arranged on the sampling inclined tube (3), the sampling tank (2) is connected to the bottom of the punching raw material tank (1) through a blowing tube (3), a blowing valve (32) is arranged on the blowing tube (3), a material removal component (4) is arranged inside the blowing tube (3), an annular filler (14) is embedded in the sampling tank (2), an air outlet elbow (15) is arranged at the top of the sampling tank (2), a portable sampling device (5) is arranged at the bottom of the sampling tank (2), and a filter screen (9) is arranged at one end of the blowing tube (3) close to the punching raw material tank (1).

2. A PTA particle sampling device according to claim 1, characterized in that: The material removal assembly (4) comprises a rod (41), a sleeve (42), a disturbance plate (43) and a disturbance rod (44), wherein the sleeve (42), the disturbance plate (43) and the disturbance rod (44) are connected together in sequence, the sleeve (42) is arranged on the rod (41), and the rod (41) is transversely arranged in the pipe of the blowing pipe (3).

3. A PTA particle sampling device according to claim 1, characterized in that: A punching port (11) is arranged on the top of the punching raw material tank (1), a ladder (12) is arranged on the side of the punching raw material tank (1), and an operating platform (13) is arranged on the punching raw material tank (1).

4. A PTA particle sampling device according to claim 1, characterized in that: The portable sampling device (5) comprises a sliding box (6), a sliding waste assembly (7) and a sliding sampling assembly (8); the sliding box (6) is arranged at the bottom of the sampling tank (2); the sliding waste assembly (7) is embedded in the sliding box (6) and the sliding waste assembly (7) is limited in position in the sliding box (6); the sliding sampling assembly (8) slides on the sliding waste assembly (7) and the sliding sampling assembly (8) pushes the sliding waste assembly (7) to move forward and backward in the sliding box (6).

5. A PTA particle sampling device according to claim 4, characterized in that: The sliding box (6) is composed of a flat plate (61), an L plate (62), a first limiting plate (63) and a second limiting plate (64). The L plates (62) are arranged on both sides of the bottom surface of the flat plate (61). The rear sides of the L plates (62) are connected to each other through the first limiting plate (63). The second limiting plate (64) is arranged on the front end of the L plate (62). The flat plate (61) is provided with a material passing hole (65).

6. A PTA particle sampling device according to claim 4, characterized in that: The sliding waste assembly (7) comprises a slide plate (71), a bending shoulder bar (72), an internally threaded spiral tube (73) and a waste bag (74). A through hole (75) is arranged on the slide plate (71). An internally threaded spiral tube (73) is arranged on the bottom of the slide plate (71). The internally threaded spiral tube (73) is the same size as the through hole (75). The waste bag (74) is spirally mounted on the internally threaded spiral tube (73). A magnet block (76) is embedded around the through hole (75) on the slide plate (71). The bending shoulder bar (72) is symmetrically mounted on the slide plate (71) along the center line of the slide plate (71). A bar magnet (77) is arranged on the slide plate (71) between the bending shoulder bars (72). The bar magnet (77) is close to one side of the bending shoulder bar (72).

7. A PTA particle sampling device according to claim 4, characterized in that: The sliding sampling assembly (8) comprises an inner slide plate (81), two inner threaded spiral tubes (82) and a sampling bottle (83). The inner slide plate (81) slides between the bent supporting rods (72). Two through holes (84) are arranged on the inner slide plate (81). Two magnet blocks (85) are embedded around the two through holes (84) on the inner slide plate (81). Two inner threaded spiral tubes (82) are arranged on the bottom of the inner slide plate (81). The two inner threaded spiral tubes (82) are the same size as the two through holes (84). The sampling bottle (83) is spirally mounted on the two inner threaded spiral tubes (82).

Images