A terephthalic acid dioctyl ester production sampling device

Abstract

The utility model relates to the technical field of terephthalic acid dioctyl ester production, especially a terephthalic acid dioctyl ester production sampling device, which is provided with a sampling mechanism that can be disassembled and fixedly installed, facilitates replacement and maintenance, and improves practicality; it comprises an outer frame, a movable plate, a bottom connecting frame, a mounting sleeve, a jacking screw sleeve, a jacking screw rod, a jacking knob, a sampling dropper, an air bag, a top connecting frame, a small oil cylinder, an extension rod and a pressing plate, the top of the outer frame is connected with the top end of the movable plate through a lifting mechanism, the bottom end of the movable plate is connected with the rear side of the mounting sleeve through the bottom connecting frame, the outer side of the jacking screw rod is connected with the middle part of the inner side of the jacking knob, the middle part of the front side of the movable plate is connected with the lower rear side of the top connecting frame, the top end in the top connecting frame is connected with the top end of the small oil cylinder, the output end of the small oil cylinder is slidingly connected with the outer side of the extension rod, the bottom side of the extension rod is connected with the pressing plate, the top end of the sampling dropper is connected with the bottom end of the air bag in communication, and the sampling dropper can be detachably inserted into the mounting sleeve.

Description

Technical Field

[0001] This utility model relates to the technical field of dioctyl terephthalate production, specifically to a sampling device for dioctyl terephthalate production. Background Technology

[0002] Dioctyl terephthalate (DOTP) is an organic compound with the molecular formula C24H38O4. It is a transparent, oily liquid, insoluble in water but soluble in common organic solvents. DOTP is a high-performance primary plasticizer used in polyvinyl chloride (PVC) plastics. Compared to the commonly used diisooctyl phthalate (DOP), it has advantages such as heat resistance, cold resistance, low volatility, pull-out resistance, flexibility, and good electrical insulation properties. In finished products, it exhibits excellent durability, soap water resistance, and low-temperature flexibility.

[0003] During its processing, sampling and testing are required. An existing sampling device for the production of dioctyl terephthalate, such as the one described in patent publication number CN221173977U, uses a first servo motor to drive an electric telescopic rod to rotate until the sampler is positioned above the sampling location. Then, the electric telescopic rod drives the sampler downwards to complete the sampling. After sampling, the sampler is reset, and then the sampler is lowered and the sample is discharged, completing one sampling cycle. Next, a second servo motor rotates a support plate to the next storage cylinder below the sampler, allowing the above steps to be repeated for sampling. The entire sampling process requires no complex manual operation, simplifying the process and further improving sampling efficiency.

[0004] Because this device is a fixed sampler, its maintenance and replacement are inconvenient and its practicality is insufficient. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sampling device for the production of dioctyl terephthalate, which features a detachable and installable sampling mechanism for easy replacement and maintenance, thereby improving its practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for the production of dioctyl terephthalate, comprising an outer frame, a movable plate, a bottom connecting frame, a mounting sleeve, a tightening screw sleeve, a tightening screw rod, a tightening handle, a sampling dropper, an air bladder, a top connecting frame, a small hydraulic cylinder, a telescopic rod, and a pressure plate. The top of the outer frame is connected to the top of the movable plate via a lifting mechanism. The bottom of the movable plate is connected to the rear side of the mounting sleeve via the bottom connecting frame. The middle of the front side of the mounting sleeve is connected to the inner side of the tightening screw sleeve. The inner wall of the tightening screw sleeve is screwed to the outer wall of the tightening screw rod. The outer side of the tightening screw rod is connected to the middle of the inner side of the tightening handle. The middle of the front side of the movable plate is connected to the lower rear side of the top connecting frame. The top of the inner part of the top connecting frame is connected to the top of the small hydraulic cylinder. The output end of the small hydraulic cylinder is slidably connected to the outer side of the telescopic rod. A pressure plate is connected to the bottom side of the telescopic rod. The top of the sampling dropper is connected to the bottom of the air bladder. The sampling dropper is detachably inserted into the mounting sleeve.

[0009] Preferably, the lifting mechanism includes a reciprocating motor, a threaded rod, a threaded tube, guide bars, and sliding sleeves. The top center of the outer frame is connected to the bottom end of the reciprocating motor, the output end of the reciprocating motor is connected to the top of the threaded rod, the outer wall of the threaded rod is screwed to the inner wall of the threaded tube, the bottom end of the threaded tube is connected to the top center of the movable plate, the left and right sides of the top of the movable plate are respectively connected to the bottom ends of a set of sliding sleeves, the left and right sides of the top of the inner frame are respectively connected to the tops of a set of guide bars, and the outer wall of the guide bar is slidably connected to the inner wall of the sliding sleeve on the same side.

[0010] Preferably, it also includes an oil injection nozzle, wherein the upper front side of the threaded tube is connected to the inner side of the oil injection nozzle.

[0011] Preferably, it also includes an oil filling cap, wherein the outer side of the oil filling nozzle and the inner side of the oil filling cap are detachably installed.

[0012] Preferably, it also includes a drying chamber, a fan, an air duct, a top grid, and electric heating tubes. The lower rear side of the outer frame is connected to the front side of the drying chamber, the inner top side of the drying chamber is connected to the outer side of the top grid, and multiple sets of electric heating tubes are installed inside the drying chamber. The output side of the fan is connected to the input side of the drying chamber via the air duct.

[0013] Preferably, it also includes a nameplate, with the upper rear side of the outer frame connected to the inner side of the nameplate.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a sampling device for the production of dioctyl terephthalate, which has the following beneficial effects:

[0016] Insert the sampling dropper into the mounting sleeve with the air bladder facing upwards. Then, tighten the top screw to rotate the top screw. The top screw, through its engagement with the top screw sleeve, acts inwards to tighten the sampling dropper at that position, fixing it relative to the mounting sleeve. During operation, the lifting mechanism lowers the movable plate, which then connects to the mounting sleeve via the bottom connecting frame, causing the sampling dropper to point downwards. The input side of the sampling dropper extends into the sampling position. Then, under the connection of the top connecting frame, the small hydraulic cylinder extends the telescopic rod, causing the pressure plate to compress the air bladder, expelling some of the gas from the sampling dropper. The small hydraulic cylinder then retracts the telescopic rod, causing the pressure plate to return to its original position, allowing negative pressure to draw in some sample from the sampling dropper. Subsequently, the lifting mechanism retrieves the sampling dropper. The sampling mechanism is designed for easy disassembly and installation, facilitating replacement and maintenance and improving practicality. Attached Figure Description

[0017] Figure 1 This is an axial view of the structural schematic diagram of this utility model;

[0018] Figure 2 This utility model Figure 1 The right view;

[0019] Figure 3 This utility model Figure 1 Top view;

[0020] Figure 4 This utility model Figure 1 Rear view.

[0021] The following components are marked in the attached diagram: 1. Outer frame; 2. Movable plate; 3. Bottom connecting frame; 4. Mounting sleeve; 5. Tightening screw sleeve; 6. Tightening screw; 7. Tightening handle; 8. Sampling dropper; 9. Airbag; 10. Top connecting frame; 11. Small hydraulic cylinder; 12. Telescopic rod; 13. Pressure plate; 14. Reciprocating motor; 15. Threaded rod; 16. Threaded pipe; 17. Guide bar; 18. Sliding sleeve; 19. Oil nozzle; 20. Oil cap; 21. Drying oven; 22. Air blower; 23. Air duct; 24. Top grid; 25. Heating element; 26. Nameplate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please see Figure 1-4A sampling device for the production of dioctyl terephthalate includes an outer frame 1, a movable plate 2, a bottom connecting frame 3, a mounting sleeve 4, a tightening screw sleeve 5, a tightening screw 6, a tightening handle 7, a sampling dropper 8, an airbag 9, a top connecting frame 10, a small hydraulic cylinder 11, a telescopic rod 12, and a pressure plate 13. The top of the outer frame 1 is connected to the top of the movable plate 2 via a lifting mechanism. The bottom of the movable plate 2 is connected to the rear side of the mounting sleeve 4 via the bottom connecting frame 3. The middle of the front side of the mounting sleeve 4 is connected to the tightening screw sleeve 5, a tightening screw 6, a tightening handle 7, a sampling dropper 8, an airbag 9, a top connecting frame 10, a small hydraulic cylinder 11, a telescopic rod 12, and a pressure plate 13. The inner side of the screw sleeve 5 is connected, and the inner wall of the tightening screw sleeve 5 is screwed to the outer wall of the tightening screw rod 6. The outer side of the tightening screw rod 6 is connected to the middle of the inner side of the tightening handle 7. The middle of the front side of the movable plate 2 is connected to the lower rear side of the top connecting frame 10. The top of the inner part of the top connecting frame 10 is connected to the top of the small oil cylinder 11. The output end of the small oil cylinder 11 is slidably connected to the outer side of the telescopic rod 12. The bottom side of the telescopic rod 12 is connected to the pressure plate 13. The top of the sampling dropper 8 is connected to the bottom of the air bag 9. The sampling dropper 8 is detachably inserted into the mounting sleeve 4. The sampling dropper 8 is inserted into the mounting sleeve 4 with the air bladder 9 facing upwards. Then, the tightening handle 7 is turned to rotate the tightening screw 6. The tightening screw 6, through its engagement with the tightening sleeve 5, acts inwards to tighten the sampling dropper 8 at that position, fixing the sampling dropper 8 relative to the mounting sleeve 4. During operation, the lifting mechanism causes the movable plate 2 to move downwards, which in turn connects to the mounting sleeve 4 via the bottom connecting frame 3, causing the sampling dropper 8 to move downwards. The input side of the sampling dropper 8 extends into the sampling position. Then, under the connection of the top connecting frame 10, the small hydraulic cylinder 11 extends the telescopic rod 12, causing the pressure plate 13 to compress the air bladder 9, expelling some of the gas inside the sampling dropper 8. Then, the small hydraulic cylinder 11 retracts the telescopic rod 12, causing the pressure plate 13 to return to its original position, allowing negative pressure to draw in some sample from the sampling dropper 8. The sampling dropper 8 is then retrieved via the lifting mechanism.

[0025] The lifting mechanism includes a reciprocating motor 14, a threaded rod 15, a threaded tube 16, guide bars 17, and sliding sleeves 18. The top center of the outer frame 1 is connected to the bottom of the reciprocating motor 14. The output end of the reciprocating motor 14 is connected to the top of the threaded rod 15. The outer wall of the threaded rod 15 is screwed to the inner wall of the threaded tube 16. The bottom of the threaded tube 16 is connected to the top center of the movable plate 2. The left and right sides of the top of the movable plate 2 are respectively connected to the bottom of a set of sliding sleeves 18. The left and right sides of the top of the inner part of the outer frame 1 are respectively connected to the top of a set of guide bars 17. The outer wall of the guide bar 17 is slidably connected to the inner wall of the sliding sleeve 18 on the same side. When the reciprocating motor 14 runs, the threaded rod 15 can rotate. The threaded rod 15 is screwed to the threaded tube 16 and slidably constrained by the guide bars 17 and sliding sleeves 18 on both sides, which can connect the movable plate 2 to lift vertically. It can be fixed at any height within the range by the threaded rod 15 and the threaded tube 16 threaded self-locking.

[0026] It also includes an oil nozzle 19, with the upper front side of the threaded tube 16 connected to the inner side of the oil nozzle 19; oil can be injected into the inner wall of the threaded tube 16 through the oil nozzle 19 for convenient lubrication and maintenance.

[0027] It also includes an oil filling cap 20, and the outer side of the oil filling nozzle 19 and the inner side of the oil filling cap 20 can be detachably installed; after the oil filling cap 20 is installed on the outer side of the oil filling nozzle 19, the inside of the oil filling nozzle 19 can be sealed and protected, improving reliability.

[0028] It also includes a drying chamber 21, a fan 22, an air duct 23, a top grid 24, and electric heating tubes 25. The lower rear side of the outer frame 1 is connected to the front side of the drying chamber 21, and the inner top side of the drying chamber 21 is connected to the outer side of the top grid 24. Multiple sets of electric heating tubes 25 are installed inside the drying chamber 21. The output side of the fan 22 is connected to the input side of the drying chamber 21 via the air duct 23. When the electric heating tubes 25 are running, they can heat the inside of the drying chamber 21. The airflow blown in by the fan 22 through the air duct 23 can be heated by the electric heating tubes 25 and turned into hot air that is discharged upward through the top grid 24. The cleaning and sampling dropper 8 on the top of the top grid 24 can be dried quickly, improving convenience.

[0029] It also includes a nameplate 26, with the upper rear side of the outer frame 1 connected to the inner side of the nameplate 26; the nameplate 26 can display information about the device, improving convenience.

[0030] In summary, when using a sampling device for dioctyl terephthalate production, the sampling dropper 8 is inserted into the mounting sleeve 4 with the air bladder 9 facing upwards. Then, the tightening handle 7 is turned to rotate the tightening screw 6. The tightening screw 6, through its screw engagement with the tightening sleeve 5, acts inwards to tighten the sampling dropper 8 at that position, fixing the sampling dropper 8 relative to the mounting sleeve 4. During operation, the reciprocating motor 14 runs, causing the threaded rod 15 to rotate. The threaded rod 15, through its screw engagement with the threaded tube 16, and through the sliding constraints of the guide bars 17 and sliding sleeves 18 on both sides, causes the movable plate 2 to move downwards. This, in turn, connects the mounting sleeve 4 via the bottom connecting frame 3, causing the sampling dropper 8 to move downwards. The input side of the sampling dropper 8 extends into the sampling position and is fixed by the self-locking threads of the threaded rod 15 and threaded tube 16. Finally, under the connection of the top connecting frame 10, the small hydraulic cylinder 11 operates... The telescopic rod 12 extends, causing the pressure plate 13 to act on the airbag 9 to compress it, which can expel some of the gas inside the sampling dropper 8. Then, the small hydraulic cylinder 11 acts on the telescopic rod 12 to retract, causing the pressure plate 13 to return to its original position. This allows the sampling dropper 8 to be sucked in under negative pressure. The sampling dropper 8 is then retrieved by the lifting mechanism. In addition, oil can be injected into the inner wall of the threaded tube 16 through the oil nozzle 19 for convenient lubrication and maintenance. After installing the oil nozzle 20 on the outside of the oil nozzle 19, the inside of the oil nozzle 19 can be sealed and protected. When the electric heating tube 25 is running, it can heat the inside of the drying chamber 21. The airflow blown in by the fan 22 through the air supply pipe 23 can be heated by the electric heating tube 25 and turned into hot air, which is discharged upward through the top grid 24. The cleaning sampling dropper 8 at the top of the top grid 24 can be dried quickly. The device information can be displayed on the nameplate 26 to improve convenience.

[0031] The small hydraulic cylinder 11, reciprocating motor 14, fan 22 and electric heating tube 25 are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, and we will not elaborate further on them here.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for the production of dioctyl terephthalate, characterized in that, The system includes an outer frame (1), a movable plate (2), a bottom connecting frame (3), a mounting sleeve (4), a tightening screw sleeve (5), a tightening screw (6), a tightening handle (7), a sampling dropper (8), an airbag (9), a top connecting frame (10), a small hydraulic cylinder (11), a telescopic rod (12), and a pressure plate (13). The top of the outer frame (1) is connected to the top of the movable plate (2) via a lifting mechanism. The bottom of the movable plate (2) is connected to the rear side of the mounting sleeve (4) via the bottom connecting frame (3). The middle of the front side of the mounting sleeve (4) is connected to the inner side of the tightening screw sleeve (5). (5) The inner wall is screwed to the outer wall of the tightening screw (6), the outer side of the tightening screw (6) is connected to the inner middle of the tightening handle (7), the front middle of the movable plate (2) is connected to the rear lower side of the top connecting frame (10), the top of the inner top of the top connecting frame (10) is connected to the top of the small oil cylinder (11), the output end of the small oil cylinder (11) is slidably connected to the outer side of the telescopic rod (12), the bottom side of the telescopic rod (12) is connected to the pressure plate (13), the top of the sampling dropper (8) is connected to the bottom of the air bag (9), and the sampling dropper (8) can be detachably inserted into the installation sleeve (4).

2. The sampling device for the production of dioctyl terephthalate according to claim 1, characterized in that: The lifting mechanism includes a reciprocating motor (14), a threaded rod (15), a threaded tube (16), a guide bar (17), and a sliding sleeve (18). The top middle of the outer frame (1) is connected to the bottom of the reciprocating motor (14). The output end of the reciprocating motor (14) is connected to the top of the threaded rod (15). The outer wall of the threaded rod (15) is screwed to the inner wall of the threaded tube (16). The bottom of the threaded tube (16) is connected to the top middle of the movable plate (2). The left and right sides of the top of the movable plate (2) are respectively connected to the bottom of a set of sliding sleeves (18). The left and right sides of the top of the inner part of the outer frame (1) are respectively connected to the top of a set of guide bars (17). The outer wall of the guide bar (17) is slidably connected to the inner wall of the sliding sleeve (18) on the same side.

3. The sampling device for the production of dioctyl terephthalate according to claim 2, characterized in that: It also includes an oil injection nozzle (19), the upper front side of the threaded tube (16) being connected to the inner side of the oil injection nozzle (19).

4. The sampling device for the production of dioctyl terephthalate according to claim 3, characterized in that: It also includes an oil filling cap (20), the outer side of the oil filling nozzle (19) and the inner side of the oil filling cap (20) can be detachably installed.

5. A sampling device for the production of dioctyl terephthalate according to claim 1, characterized in that: It also includes a drying box (21), a fan (22), an air duct (23), a top grid (24), and electric heating tubes (25). The lower rear side of the bundled outer frame (1) is connected to the front side of the drying box (21). The inner side of the top of the drying box (21) is connected to the outer side of the top grid (24). Multiple sets of electric heating tubes (25) are installed inside the drying box (21). The output side of the fan (22) is connected to the input side of the drying box (21) through the air duct (23).

6. The sampling device for the production of dioctyl terephthalate according to claim 1, characterized in that: It also includes a nameplate (26), the upper rear side of the outer frame (1) being connected to the inner side of the nameplate (26).

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