A sampling device for carbon black raw material oil

Abstract

This invention relates to the field of carbon black production technology, and more particularly to a sampling device for carbon black feedstock oil. The device includes a tank for holding carbon black feedstock oil, a core tube, and an outer tube. The core tube is rotatably disposed within the outer tube, which is located within the tank. The core tube has an inner sampling port, and the outer tube has an outer sampling port. The core tube is rotatably aligned with the inner and outer sampling ports. A discharge tube communicates with the outer tube and passes through the tank. The inner and outer sampling ports are of the same size, with a larger upper opening and a gradually decreasing lower opening, and are tapered in shape. This invention enables the simultaneous sampling of feedstock oil from all areas within the tank, comprehensively reflecting the overall quality of the feedstock oil within the entire tank, effectively solving the problem of existing sampling methods that can only obtain oil samples from a single location and lack representativeness.

Description

Technical Field

[0001] This invention relates to the field of carbon black production technology, and in particular to a sampling device for carbon black feedstock oil. Background Technology

[0002] In the carbon black production process, the quality of the feedstock oil directly affects the performance and quality of the carbon black product. Therefore, the quality testing of the feedstock oil is a crucial step in the production process. Currently, the carbon black feedstock oils used in factories mainly include coal tar, anthracene oil, mixtures of the two, and mixtures with carbon black oil. These feedstock oils are dehydrated and then stored in feedstock oil tanks for later use. To ensure that the feedstock oil meets production requirements, oil samples need to be collected and sent to the laboratory for testing and analysis. Currently, there are two main sampling methods commonly used in the industry: one is to manually extract the oil sample directly from the oil tank using a handheld sampling bottle, and the other is to use a gate sampler. When manually sampling with a handheld sampling bottle, the operator needs to approach the opening of the oil tank and insert the sampling bottle into a specific location in the tank to collect the oil sample; the gate sampler, on the other hand, controls the opening and closing of the gate to allow the oil sample from a certain part of the oil tank to flow into the sampling container.

[0003] However, these two existing sampling methods have significant limitations. Carbon black feedstock oil contains various components such as impurities, asphalt, and gums. These components, due to their different densities, will form stratified distributions within the oil tank. Denser components will sink to the lower part of the tank, while less dense components will float to the upper part, resulting in differences in composition and quality of feedstock oil at different heights and locations within the tank. Manual sampling using handheld sampling bottles and gate samplers can only collect oil samples from a specific location within the tank per operation, failing to cover all areas of the feedstock oil. Such single-location samples lack comprehensiveness and representativeness, making it difficult to accurately reflect the overall quality of the feedstock oil within the tank, potentially leading to biased test results. Therefore, relying on these incomplete test results to judge feedstock oil quality and guide production may affect the stability of carbon black products, even causing production failures or product defects, failing to meet the precise quality control requirements of carbon black production. Summary of the Invention

[0004] The purpose of this invention is to provide a carbon black feedstock oil sampling device to improve the problems existing in the prior art.

[0005] This invention is implemented as follows: a sampling device for carbon black feedstock oil includes a tank for holding carbon black feedstock oil, a core tube and an outer tube. The core tube is rotatably disposed inside the outer tube, which is disposed within the tank. The core tube has an inner sampling port, and the outer tube has an outer sampling port. The core tube is rotatably aligned with the inner and outer sampling ports. A discharge tube is connected to the outer tube and passes through the tank. The inner and outer sampling ports are of the same size, with a larger upper opening and a gradually decreasing lower opening, and are tapered at both ends.

[0006] More preferably, the core tube has an inner upper thread and a keyway on its upper side, a first bearing platform is provided on the side of the core tube near the inner upper thread, an inner sample outlet is provided on the lower side of the core tube, a second bearing platform is provided on the side of the lower side of the core tube near the inner sample outlet, and an inner lower thread and a lower sealing groove are provided on the lower side of the core tube, with the lower sealing groove located above the second bearing platform.

[0007] More preferably, a bearing seat is provided on the upper side of the outer tube, and an outer sealing groove is provided on the outer tube near the outer sample inlet. A main sealing ring is provided in the outer sealing groove. The main sealing ring is used to seal the outer tube and the core tube. An outer sample outlet is provided on the lower side of the outer tube, and an outer threaded port is provided on the lower side of the outer tube. The outer threaded port is connected to a body seat, and the body seat is located inside the tank.

[0008] More preferably, the external sample inlet and the external sample outlet are arranged adjacent to each other, and the internal sample inlet and the internal sample outlet are arranged opposite to each other, such that when the external sample inlet and the internal sample inlet are aligned, the external sample outlet and the internal sample outlet are staggered, and when the external sample outlet and the internal sample outlet are aligned, the external sample inlet and the internal sample inlet are staggered.

[0009] More preferably, a short-connection flange is welded to the tank body, and a connecting flange is provided on the outer pipe, with the outer pipe fixed to the short-connection flange via the connecting flange.

[0010] More preferably, the core tube and the outer tube are rotatably connected by an upper bearing and a lower bearing, the lower bearing is fixed to the core tube by a back thread, and a lower sealing ring is provided between the lower side of the core tube and the outer tube.

[0011] More preferably, a bearing end cap is provided on the outer tube, the bearing end cap is located on the bearing seat, the upper bearing is located inside the bearing seat, and a sealing ring is provided between the bearing seat and the bearing end cap.

[0012] More preferably, a rotating disk is fixedly mounted on the upper side of the core tube by a fixing nut, and a connecting key is provided on the rotating disk. The connecting key is located in the keyway. By rotating the rotating disk, the connecting key is driven to rotate, thereby causing the core tube to rotate. A dust cap is provided on the top of the core tube through the inner thread.

[0013] More preferably, the discharge pipe is connected to the tank body via a first flange and a second flange.

[0014] More preferably, a sampling valve is provided on the side of the sampling tube away from the outer tube.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention can obtain raw oil from all areas inside the oil tank in one sampling. The collected oil samples cover oil bodies of different depths and layers inside the tank, comprehensively reflecting the overall quality status of the raw oil in the entire oil tank. It effectively solves the problem that the existing sampling methods can only obtain oil samples from a single part and are not representative enough. It provides a more accurate and reliable sample basis for testing and detection, thereby ensuring the accuracy of raw material quality judgment in the carbon black production process.

[0016] The internal and external inlets adopt an upper and lower conical structure with a larger upper opening and a gradually narrowing lower opening. By combining the relationship between liquid depth and pressure and optimizing the size design of the inlet, the problem of different liquid inlet speed caused by the pressure difference of liquid at different depths is offset. This ensures that liquid on the same plane in the tank can enter the core tube synchronously and uniformly, further improving the uniformity and representativeness of the oil sample, and making the test results more reflective of the true quality of the raw oil.

[0017] The core tube and outer tube are sealed by a multi-layer sealing structure including a main sealing ring, a lower sealing ring, and a sealing ring, which effectively prevents leakage of raw oil during sampling. At the same time, it prevents external dust and impurities from entering the oil tank or core tube, ensuring a clean and safe production environment and avoiding contamination of the raw oil and oil sample by impurities, thus ensuring the purity of the raw oil and the accuracy of the oil sample test results.

[0018] The device has a reasonable overall structure design. The alignment and staggering of the inlet can be achieved by rotating the core tube through the rotating disk, thereby completing the sampling and sealing operations. The operation process is simple and quick, without complicated disassembly or debugging steps, which reduces the labor intensity of operators and improves sampling efficiency. It is suitable for the frequent sampling needs in the continuous production process of the factory.

[0019] The outer pipe is fixed to the short-circuit flange on the tank body via a connecting flange, and the layout pipe is connected to the tank body via a first flange and a second flange. The connection between the components is stable and reliable, which not only facilitates the installation and disassembly of the device, but also provides convenience for subsequent maintenance, repair and component replacement, extends the service life of the device and reduces the cost of equipment use.

[0020] The core tube and the outer tube are rotatably connected by an upper bearing and a lower bearing. The lower bearing is fixed to the core tube by a back thread. The rotation process is smooth and stable, which reduces wear between components and ensures the accuracy of the alignment and misalignment of the injection port. This avoids the sampling effect being affected by component jamming or misalignment, and ensures the stability and reliability of the device operation. Attached Figure Description

[0021] Figure 1 This is a diagram of the installation structure of the present invention.

[0022] Figure 2 This is a cross-sectional view of the core tube of the present invention.

[0023] Figure 3 This is a cross-sectional view of the outer tube of the present invention.

[0024] Figure 4 This is a planar structural diagram of the external sample inlet and external sealing groove of the present invention. Figure 5 For the present invention Figure 1 Partial view A.

[0025] Figure 6 For the present invention Figure 1 Partial view B.

[0026] Figure 7 For the present invention Figure 2 Partial view C.

[0027] Figure 8 For the present invention Figure 2 Partial view D.

[0028] Figure 9 This is a schematic diagram of the internal and external injection ports in this invention.

[0029] Reference numerals: 1. Core tube; 101. Inner upper thread; 102. First bearing platform; 104. Inner sample outlet; 105. Second bearing platform; 106. Inner lower thread; 107. Lower sealing groove; 108. Inner sample inlet; 109. Keyway; 2. Outer tube; 201. Bearing seat; 202. Connecting flange; 203. Outer sample inlet; 204. Outer sealing groove; 205. Outer sample outlet; 206. Outer lower thread; 3. Short-connecting flange; 4. Main sealing ring; 5. Tank body; 6. Sample discharge tube; 7. First flange; 8. Sampling valve; 9. Second flange; 10. Body seat; 11. Back thread; 12. Lower bearing; 13. Lower sealing ring; 14. Upper bearing; 15. Sealing ring; 16. Bearing end cover; 17. Rotating disk; 18. Connecting key; 19. Fixing nut; 20. Dust cap. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects.

[0031] This embodiment provides a sampling device for carbon black feedstock oil, such as... Figures 1-9 As shown, the device includes a tank body 5 for holding carbon black raw material oil, a core tube 1 and an outer tube 2. The core tube 1 is rotatably disposed inside the outer tube 2, and the outer tube 2 is disposed inside the tank body 5. The core tube 1 has an inner sampling port 108, and the outer tube 2 has an outer sampling port 203. The core tube 1 is rotatably aligned with the inner sampling port 108 and the outer sampling port 203. A discharge tube 6 is connected to the outer tube 2 and passes through the tank body 5. The inner inlet 108 and the outer inlet 203 are the same size, with the upper opening being larger and the lower opening gradually decreasing in size, and the upper and lower openings being conical.

[0032] In some embodiments, the core tube 1 has an inner upper thread 101 and a keyway 109 on its upper side, a first bearing platform 102 is provided on the side of the core tube 1 near the inner upper thread 101, an inner sample outlet 104 is provided on the lower side of the core tube 1, a second bearing platform 105 is provided on the lower side of the core tube 1 near the inner sample outlet 104, and an inner lower thread 106 and a lower sealing groove 107 are provided on the lower side of the core tube 1, with the lower sealing groove 107 located on the upper side of the second bearing platform 105.

[0033] In some embodiments, a bearing seat 201 is provided on the upper side of the outer tube 2, and an outer sealing groove 204 is provided on the outer tube 2 near the outer sample inlet 203. A main sealing ring 4 is provided in the outer sealing groove 204. The main sealing ring 4 is used to seal the outer tube 2 and the core tube 1. An outer sample outlet 205 is provided on the lower side of the outer tube 2, and an outer threaded port 206 is provided on the lower side of the outer tube 2. The outer threaded port 206 is connected to a body seat 10, and the body seat 10 is disposed inside the tank body 5.

[0034] In some embodiments, the external sample inlet 203 and the external sample outlet 205 are arranged adjacent to each other, and the internal sample inlet 108 and the internal sample outlet 104 are arranged opposite to each other, such that when the external sample inlet 203 and the internal sample inlet 108 are aligned, the external sample outlet 205 and the internal sample outlet 104 are staggered, and when the external sample outlet 205 and the internal sample outlet 104 are aligned, the external sample inlet 203 and the internal sample inlet 108 are staggered.

[0035] In some embodiments, a short-connection flange 3 is welded onto the tank body 5, and a connecting flange 202 is provided on the outer pipe 2. The outer pipe 2 is fixed to the short-connection flange 3 through the connecting flange 202.

[0036] In some embodiments, the core tube 1 and the outer tube 2 are rotatably connected by an upper bearing 14 and a lower bearing 12. The lower bearing 12 is fixed to the core tube 1 by a back thread 11. A lower sealing ring 13 is provided between the lower side of the core tube 1 and the outer tube 2.

[0037] In some embodiments, a bearing end cap 16 is provided on the outer tube 2, the bearing end cap 16 is located on the bearing seat 201, the upper bearing 14 is located inside the bearing seat 201, and a sealing ring 15 is provided between the bearing seat 201 and the bearing end cap 16.

[0038] In some embodiments, a rotating disk 17 is fixedly mounted on the upper side of the core tube 1 by a fixing nut 19. A connecting key 18 is provided on the rotating disk 17. The connecting key 18 is located in the keyway 109. By rotating the rotating disk 17, the connecting key 18 is rotated, causing the core tube 1 to rotate. A dust cap 20 is provided on the top of the core tube 1 through the inner thread 101.

[0039] In some embodiments, the sampling pipe 6 is connected to the tank body 5 via a first flange 7 and a second flange 9.

[0040] In some embodiments, a sampling valve 8 is provided on the side of the sampling tube 6 away from the outer tube 2.

[0041] Working principle: During sampling, first open the dust cap 20 and manually rotate the rotating disk 17. The rotating disk 17 drives the core tube 1 to rotate via the connecting key 18. The core tube 1 is connected to the outer tube 2 via the upper bearing 14 and the lower bearing 12, causing the core tube 1 to rotate approximately 90° relative to the outer tube 2. At this time, the inner sampling port 108 on the core tube 1 and the outer sampling port 203 on the outer tube 2 are precisely aligned. Both the inner sampling port 108 and the outer sampling port 203 are vertically arranged strip structures that penetrate the vertical height of the carbon black raw material oil in the tank 5. This allows liquids of different depths and levels in the tank to enter the core tube 1 simultaneously, effectively avoiding the limitation of traditional sampling methods that can only obtain oil samples from a single location. This ensures that the oil sample covers the raw material oil in all areas of the tank, guaranteeing the representativeness of the oil sample from the source. The core tube 1 and the outer tube 2 are sealed by a main sealing ring 4. The main sealing ring 4 is embedded in the outer sealing groove 204 of the outer tube 2, which can prevent the raw material oil in the tank from leaking during the sampling process, and at the same time prevent external impurities from entering the core tube 1 or the tank body 5, thus ensuring the sealing of the sampling environment and the purity of the raw material oil.

[0042] After the core tube 1 is filled with liquid (the liquid level inside the core tube 1 is flush with the liquid level inside the tank 5), the rotating disk 17 is rotated to make the core tube 1 rotate radially relative to the outer tube 2. At this time, the positions of the inner sampling port 108 and the outer sampling port 203 are staggered. Combined with the sealing effect of the main sealing ring 4, the liquid inside the tank and the oil sample in the core tube 1 are completely isolated, avoiding dilution or contamination of the collected oil sample by the subsequent liquid in the tank, and ensuring the stability of the oil sample state. Then, the sampling valve 8 on the discharge tube 6 is opened to smoothly take out an appropriate amount of oil sample for testing. The discharge tube 6 is fixedly connected to the tank 5 through the first flange 7 and the second flange 9, and the connection is stable and convenient for subsequent maintenance or disassembly. After sampling, the dust cap 20 is tightened to prevent external dust, impurities, etc. from entering the core tube 1, providing a clean internal environment for the next sampling. When sampling is required again, repeat the above operation. First, open the dust cap 20, rotate the rotating disk 17 to align the inner sampling port 108 with the outer sampling port 203, and the liquid in the tank re-enters the core tube 1. When the liquid level in the core tube 1 is consistent with the liquid level in the tank, rotate the rotating disk 17 to close the communication channel between the core tube 1 and the liquid in the tank, and a new round of sampling can be carried out. The operation process is simple and efficient, without the need for complicated disassembly or debugging steps.

[0043] To further ensure that liquids on the same plane within the tank can simultaneously and uniformly enter the core tube 1, and to maintain a high degree of consistency in composition and state between the oil sample collected in the core tube 1 and the overall liquid in the tank, both the inner inlet 108 and the outer inlet 203 are designed as upper and lower conical structures with a larger upper opening and a gradually narrowing lower opening. The principle is that the greater the liquid depth, the greater the pressure; therefore, areas with higher pressure have a faster liquid inflow rate for the same area. By designing a smaller diameter at the bottom of the inlet, the difference in inflow rate caused by the higher pressure of the liquid below can be effectively offset, ensuring that liquids at different depths within the tank enter the core tube 1 simultaneously. This greatly improves the uniformity and accuracy of the oil sample, allowing the test results to truly reflect the quality status of the carbon black raw material oil within the entire tank 5, providing reliable data support for raw material quality control during the carbon black production process.

[0044] While embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of the invention as set forth in the claims. Furthermore, the invention described herein may have other embodiments and can be implemented or carried out in various ways.

Claims

1. A sampling device for carbon black feedstock oil, comprising a tank (5) for holding carbon black feedstock oil, characterized in that, It also includes a core tube (1) and an outer tube (2). The core tube (1) is rotatably disposed inside the outer tube (2). The outer tube (2) is disposed inside the tank body (5). An inner sample inlet (108) is provided on the core tube (1). An outer sample inlet (203) is provided on the outer tube (2). The core tube (1) is rotatably aligned with the inner sample inlet (108) and the outer sample inlet (203). The sample release tube (6) is connected to the outer tube (2). The sample release tube (6) passes through the tank body (5). The inner inlet (108) and the outer inlet (203) are the same size, with the upper opening being larger and the lower opening gradually decreasing in size, and the upper and lower openings being conical.

2. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, The core tube (1) has an inner upper thread opening (101) and a keyway (109) on its upper side. A first bearing platform (102) is provided on the side of the core tube (1) near the inner upper thread opening (101). An inner sample outlet (104) is provided on the lower side of the core tube (1). A second bearing platform (105) is provided on the side of the lower side of the core tube (1) near the inner sample outlet (104). An inner lower thread opening (106) and a lower sealing groove (107) are provided on the lower side of the core tube (1). The lower sealing groove (107) is located on the upper side of the second bearing platform (105).

3. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, The outer tube (2) is provided with a bearing seat (201) on the upper side. An outer sealing groove (204) is provided on the outer tube (2) near the outer sample inlet (203). A main sealing ring (4) is provided in the outer sealing groove (204). The main sealing ring (4) is used to seal the outer tube (2) and the core tube (1). An outer sample outlet (205) is provided on the lower side of the outer tube (2). An outer threaded port (206) is provided on the lower side of the outer tube (2). The outer threaded port (206) is connected to a body seat (10). The body seat (10) is located inside the tank body (5).

4. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, The external sample inlet (203) and the external sample outlet (205) are arranged adjacent to each other, and the internal sample inlet (108) and the internal sample outlet (104) are arranged opposite to each other, such that when the external sample inlet (203) and the internal sample inlet (108) are aligned, the external sample outlet (205) and the internal sample outlet (104) are staggered, and when the external sample outlet (205) and the internal sample outlet (104) are aligned, the external sample inlet (203) and the internal sample inlet (108) are staggered.

5. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, A short-connection flange (3) is welded on the tank body (5), and a connecting flange (202) is provided on the outer pipe (2). The outer pipe (2) is fixed to the short-connection flange (3) through the connecting flange (202).

6. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, The core tube (1) and the outer tube (2) are rotatably connected by an upper bearing (14) and a lower bearing (12). The lower bearing (12) is fixed to the core tube (1) by a back thread (11). A lower sealing ring (13) is provided between the lower side of the core tube (1) and the outer tube (2).

7. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, The outer tube (2) is provided with a bearing end cap (16), the bearing end cap (16) is located on the bearing seat (201), the upper bearing (14) is located inside the bearing seat (201), and a sealing ring (15) is provided between the bearing seat (201) and the bearing end cap (16).

8. The sampling device for carbon black feedstock oil according to claim 1, characterized in that, A rotating disk (17) is fixedly mounted on the upper side of the core tube (1) by a fixing nut (19). A connecting key (18) is provided on the rotating disk (17). The connecting key (18) is located in the keyway (109). By rotating the rotating disk (17), the connecting key (18) is driven to rotate, so that the core tube (1) rotates. A dust cap (20) is provided on the top of the core tube (1) through the inner thread (101).

9. A sampling device for carbon black feedstock oil according to claim 2, characterized in that, The sampling pipe (6) is connected to the tank body (5) via a first flange (7) and a second flange (9).

10. A sampling device for carbon black feedstock oil according to claim 2, characterized in that, A sampling valve (8) is provided on the side of the sampling tube (6) away from the outer tube (2).

Images