Polyester synthesis reaction kettle sampling device

Abstract

The utility model discloses a polyester synthesis reaction kettle sampling device, which comprises a sampling screw rod, the sampling screw rod is arranged inside the upper end of a sampling pipe through a screw rod bearing, an internal lifting plate is arranged at the lower end of the sampling screw rod, the internal lifting plate is connected with the sampling screw rod in a welding way, a waste scraping plate is arranged outside the internal lifting plate, and the waste scraping plate is connected with the sampling screw rod in a welding way. According to the device, the internal lifting plate is mounted and can spirally and longitudinally move under the action of the sampling screw rod, and when the internal lifting plate spirally and longitudinally moves, the internal lifting plate can drive the waste scraping plate to rotate, so that the waste scraping plate scrapes the interior of the sampling pipe, and a liquid polyester composition sample attached to the inner wall of the sampling pipe is scraped; and when the device is used for sampling again, the sample can be prevented from containing some residues sampled last time, so that the accuracy of a sample analysis result of a worker is ensured.

Description

Technical Field

[0001] The utility model relates to the field of sampling of polyester synthesis reactors, and particularly relates to a sampling device for polyester synthesis reactors. Background Art

[0002] In the polyester synthesis reaction, in order to track the reaction process and detect the degree of polymerization, workers often need to use a sampling device to sample the sample during the reaction and then analyze the sample. Since the liquid polyester synthesis sample usually has a certain fluidity and viscosity, after the sampling of the liquid polyester synthesis sample by the worker, a part of the liquid polyester synthesis sample will adhere to the inner wall of the sampling device. When the sampling device samples again, the sample will contain some residues of the previous sampling, which will affect the accuracy of the sample analysis results by the worker. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sampling device for polyester synthesis reactors.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A sampling device for polyester synthesis reactors of the utility model includes a sampling tube:

[0006] A sampling lead screw, which is installed inside the upper end of the sampling tube through a lead screw bearing. An internal lifting plate is installed at the lower end of the sampling lead screw. The internal lifting plate is welded to the sampling lead screw. A scraping waste plate is installed outside the internal lifting plate. The scraping waste plate is slidably connected to the internal lifting plate up and down through a card slot. A second sealing member is arranged between the scraping waste plate and the internal lifting plate;

[0007] An upper enclosing plate, which is installed at the upper end outside the sampling tube. A stabilizing lead screw is arranged inside the upper enclosing plate. The stabilizing lead screw is slidably connected to the upper enclosing plate up and down through a card slot. A connecting plate is installed at the lower end of the stabilizing lead screw. An electromagnet is installed at the lower end of the connecting plate. A height fixing threaded cylinder is installed at the lower end outside the stabilizing lead screw. The stabilizing lead screw is threadedly connected to the height fixing threaded cylinder.

[0008] Further, a transparent observation window is installed outside the sampling tube, and the transparent observation window is fixedly connected to the sampling tube.

[0009] Further, a flexible conical member is installed at the lower end inside the sampling tube, and the flexible conical member is fixedly connected to the sampling tube.

[0010] Further, a first sealing member is installed outside the internal lifting plate, and the first sealing member is fixedly connected to the internal lifting plate.

[0011] Further, a height scale is installed outside the sampling lead screw, and the height scale is fixedly connected to the sampling lead screw.

[0012] Further, a connecting ring is installed at the upper end of the stabilizing lead screw, and the connecting ring is fixedly connected to the stabilizing lead screw.

[0013] Further, the upper enclosing plate is welded to the sampling pipe, the connecting plate is fixedly connected to the stabilizing lead screw, and the electromagnet is fixedly connected to the connecting plate.

[0014] In the above technical solution, a sampling device for a polyester synthesis reactor provided by the present utility model has the following beneficial effects:

[0015] 1. Install the internal lifting plate so that it can move longitudinally in a spiral manner under the action of the sampling lead screw. When the internal lifting plate moves longitudinally in a spiral manner, the internal lifting plate can drive the scraping waste plate to rotate, thereby scraping the inside of the sampling pipe with the scraping waste plate, scraping off the liquid polyester synthesis sample attached to the inner wall of the sampling pipe, avoiding that when the device takes a sample again, the sample will contain some residues from the previous sampling, and ensuring the accuracy of the analysis results of the sample by the staff;

[0016] 2. Install the height-fixing threaded cylinder, which can facilitate the staff to adjust the position of the upper enclosing plate outside in combination with gravity, making the device more convenient to use, and at the same time increasing the stability of the device. Installing a transparent observation window can facilitate the staff to observe the liquid polyester synthesis sample inside the device, making the device more user-friendly. Installing a flexible conical part can utilize its toughness to prevent the liquid polyester synthesis sample from flowing back, enhancing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a main view three-dimensional diagram of a sampling device for a polyester synthesis reactor;

[0019] Figure 2 It is a schematic diagram of the internal structure of a sampling device for a polyester synthesis reactor;

[0020] Figure 3 It is a connection relationship diagram of the flexible conical part and the sampling pipe in a sampling device for a polyester synthesis reactor;

[0021] Figure 4 It is an enlarged view of the structure of the internal lifting plate in a sampling device for a polyester synthesis reactor;

[0022] Figure 5 It is a coordination relationship diagram of the internal lifting plate and the scraping waste plate in a sampling device for a polyester synthesis reactor;

[0023] Figure 6 It is Figure 1 The enlarged view of part C in

[0024] In the figure: sampling tube 1, transparent observation window 2, upper enclosing plate 3, stable lead screw 4, connecting ring 5, sampling lead screw 6, height fixing threaded cylinder 7, internal lifting plate 8, flexible conical part 9, height scale 10, first seal 11, second seal 12, scraping waste plate 13, connecting plate 14, electromagnet 15. Specific implementation mode

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Refer to Figure 1-6 As shown in

[0027] A sampling lead screw 6 is installed inside the upper end of the sampling tube 1 through a lead screw bearing. The lower end of the sampling lead screw 6 is installed with an internal lifting plate 8. The internal lifting plate 8 is installed so that it can move longitudinally in a spiral manner under the action of the sampling lead screw 6. When the internal lifting plate 8 moves longitudinally in a spiral manner, the internal lifting plate 8 can drive the scraping waste plate 13 to rotate, so that the scraping waste plate 13 scrapes the inside of the sampling tube 1, scraping off the liquid polyester synthesis sample attached to the inner wall of the sampling tube 1, avoiding that when the device takes a sample again, the sample will contain some residues of the previous sampling, and ensuring the accuracy of the analysis results of the sample by the staff. The internal lifting plate 8 is welded to the sampling lead screw 6. A scraping waste plate 13 is installed outside the internal lifting plate 8. The scraping waste plate 13 is connected to the internal lifting plate 8 through a card slot and slides up and down. A second seal 12 is provided between the scraping waste plate 13 and the internal lifting plate 8;

[0028] An upper enclosing plate 3 is installed at the upper end outside the sampling tube 1. A stable lead screw 4 is arranged inside the upper enclosing plate 3. The stable lead screw 4 is connected to the upper enclosing plate 3 through a card slot and slides up and down. The lower end of the stable lead screw 4 is installed with a connecting plate 14. The lower end of the connecting plate 14 is installed with an electromagnet 15. The lower end outside the stable lead screw 4 is installed with a height fixing threaded cylinder 7. The installation of the height fixing threaded cylinder 7 enables it to cooperate with gravity to facilitate the staff to adjust the position of the upper enclosing plate 3 outside, making the device more convenient to use and increasing the stability of the device at the same time. The stable lead screw 4 is connected to the height fixing threaded cylinder 7 through a thread.

[0029] Refer to Figure 1 、Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a transparent observation window 2 is installed outside the sampling tube 1. Installing the transparent observation window 2 can facilitate the staff to observe the liquid polyester composite sample inside the device, making the device more user-friendly. The transparent observation window 2 is fixedly connected to the sampling tube 1. A flexible conical member 9 is installed at the lower end inside the sampling tube 1. Installing the flexible conical member 9 can utilize its toughness to prevent the liquid polyester composite sample from flowing back, enhancing the practicality of the device. The flexible conical member 9 is fixedly connected to the sampling tube 1. A first seal 11 is installed outside the internal lifting plate 8. The first seal 11 is fixedly connected to the internal lifting plate 8. A height scale 10 is installed outside the sampling screw rod 6. The height scale 10 is fixedly connected to the sampling screw rod 6. A connecting ring 5 is installed at the upper end of the stabilizing screw rod 4. The connecting ring 5 is fixedly connected to the stabilizing screw rod 4. The upper enclosing plate 3 is welded to the sampling tube 1. The connecting plate 14 is fixedly connected to the stabilizing screw rod 4. The electromagnet 15 is fixedly connected to the connecting plate 14.

[0030] The specific use process of the present utility model is as follows: The staff places the device on the upper end of the polyester synthesis reaction kettle, so that the lower end of the sampling tube 1 extends into the interior of the polyester synthesis reaction kettle, and makes the electromagnet 15 fit against the outer wall of the polyester synthesis reaction kettle. Then the staff turns the height-fixing threaded cylinder 7 to adjust the height of the height-fixing threaded cylinder 7. Under the action of gravity, the sampling tube 1 descends into the interior of the polyester synthesis reaction kettle until the upper enclosing plate 3 contacts the height-fixing threaded cylinder 7. In this way, the staff completes the control of the amount of the sampling tube 1 extending into the interior of the polyester synthesis reaction kettle, and further controls the sampling depth of the device. Then the electromagnet 15 is energized to magnetically attract the outer wall of the polyester synthesis reaction kettle to fix the device. Then the staff rotates the sampling screw rod 6, so that the sampling screw rod 6 drives the internal lifting plate 8 to spiral upward, and then the liquid polyester synthesis sample enters the device through the flexible conical member 9. The staff can observe the height scale 10 to know the height change of the sampling screw rod 6, and then roughly know the amount of the liquid polyester synthesis sample entering the sampling tube 1. Then the electromagnet 15 is powered off, and the staff takes out the device and reversely turns the sampling screw rod 6 to make the internal lifting plate 8 push out the liquid polyester synthesis sample from the device. When the internal lifting plate 8 rotates, it will drive the scraping waste plate 13 to rotate to scrape the liquid polyester synthesis sample attached to the inner wall of the sampling tube 1. Since the internal lifting plate 8 and the scraping waste plate 13 are slidably connected up and down through the card slots, the scraping waste plate 13 can only rotate with the internal lifting plate 8 and cannot move up and down with the internal lifting plate 8. The device is installed with the internal lifting plate 8 so that it can move longitudinally in a spiral manner under the action of the sampling screw rod 6. When the internal lifting plate 8 moves longitudinally in a spiral manner, the internal lifting plate 8 can drive the scraping waste plate 13 to rotate, and then the scraping waste plate 13 scrapes the inside of the sampling tube 1 to scrape off the liquid polyester synthesis sample attached to the inner wall of the sampling tube 1, avoiding that when the device takes samples again, the sample will contain some residues from the previous sampling, ensuring the accuracy of the analysis results of the samples by the staff. The height-fixing threaded cylinder 7 is installed to facilitate the staff to adjust the position of the upper enclosing plate 3 outside in cooperation with gravity, making the device more convenient to use and increasing the stability of the device at the same time. The transparent observation window 2 is installed to facilitate the staff to observe the liquid polyester synthesis sample inside the device, making the device more user-friendly. The flexible conical member 9 is installed to utilize its toughness to prevent the liquid polyester synthesis sample from flowing back and enhancing the practicability of the device.

[0031] Only some exemplary embodiments of the present utility model have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present utility model.

Claims

1. A polyester synthesis reactor sampling device, comprising a sampling tube (1), characterized in that: A sampling screw (6) is installed inside the upper end of the sampling tube (1) via a screw bearing, an internal lifting plate (8) is installed at the lower end of the sampling screw (6), the internal lifting plate (8) is welded to the sampling screw (6), a scraper plate (13) is installed outside the internal lifting plate (8), the scraper plate (13) and the internal lifting plate (8) are connected to each other in an up-and-down sliding manner via a slot, and a second sealing member (12) is provided between the scraper plate (13) and the internal lifting plate (8); An upper enclosure plate (3) is mounted on the upper end of the outside of the sampling tube (1); a stabilizing screw rod (4) is arranged inside the upper enclosure plate (3); the stabilizing screw rod (4) and the upper enclosure plate (3) are connected to each other by sliding up and down through a slot; a connecting plate (14) is mounted on the lower end of the stabilizing screw rod (4); an electromagnet (15) is mounted on the lower end of the connecting plate (14); a height-fixing threaded cylinder (7) is mounted on the lower end of the outside of the stabilizing screw rod (4); the stabilizing screw rod (4) and the height-fixing threaded cylinder (7) are connected by threads.

2. A polyester synthesis reactor sampling device according to claim 1, characterized in that: A transparent observation window (2) is installed on the outside of the sampling tube (1), and the transparent observation window (2) is fixedly connected to the sampling tube (1).

3. A polyester synthesis reactor sampling device according to claim 1, characterized in that: A flexible conical member (9) is installed at the lower end of the sampling tube (1), and the flexible conical member (9) is fixedly connected to the sampling tube (1).

4. A polyester synthesis reactor sampling device according to claim 1, characterized in that: A first sealing member (11) is installed on the outer side of the internal lifting plate (8), and the first sealing member (11) is fixedly connected to the internal lifting plate (8).

5. A polyester synthesis reactor sampling device according to claim 1, characterized in that: A height scale (10) is installed outside the sampling screw rod (6), and the height scale (10) is fixedly connected to the sampling screw rod (6).

6. A polyester synthesis reactor sampling device according to claim 1, characterized in that: A connecting ring (5) is installed at the upper end of the stabilizing screw rod (4), and the connecting ring (5) is fixedly connected to the stabilizing screw rod (4).

7. A polyester synthesis reactor sampling device according to claim 1, characterized in that: The upper enclosure plate (3) is connected to the sampling tube (1) by welding, the connecting plate (14) is fixedly connected to the stabilizing screw rod (4), and the electromagnet (15) is fixedly connected to the connecting plate (14).

Images