PH value on-line detection device of coal tar deep processing desulfurization tower

Abstract

The utility model discloses a coal tar deep processing desulfurizing tower PH value on-line detection device, relates to the technical field of coal tar processing, and comprises a tower body and a liquid pipe connected with the tower body, the pipe wall of the liquid pipe is fixedly provided with two symmetrically arranged detection cylinders in a penetrating manner, a bottom plate is fixedly arranged between the two detection cylinders, and the top of the bottom plate is fixedly provided with a supporting plate. The top of the supporting plate is fixedly provided with a placing plate, the top of the placing plate is fixedly provided with an online PH detector, the online PH detector is connected with two detection heads, and the two detection heads are respectively arranged in the two detection cylinders. According to the liquid pipe, the detection cylinder, the supporting plate, the online PH detector, the detection heads, the rotating transposition mechanism, the mounting plate, the worm gear and the worm, the two detection heads can be used separately, impurities attached to the outer sides of the detection heads can be cleaned while PH value detection is conducted, it is guaranteed that the detection heads can conduct continuous and stable detection, and meanwhile the detection precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal tar processing, in particular to an on-line detection device for the pH value of a desulfurization tower in the deep processing of coal tar. Background Technique

[0002] In the process of deep processing of coal tar, the desulfurization tower is a key device for removing sulfur from raw materials. By real-time monitoring the pH value of the solution in the desulfurization tower, it can ensure that the desulfurization reaction proceeds under the optimal pH conditions, thereby improving the desulfurization efficiency and product quality.

[0003] After retrieval, patent CN210964656U discloses a new type of desulfurization tower slurry circulation system. When the system is running, by setting a slurry circulation mechanism, the slurry enters the mixing box through the second conveying pipe, and then corresponding materials are added to the mixing box through the adding pipe to control the density and pH value of the slurry. The servo motor drives the crushing knife to stir and crush the slurry through the rotating shaft to prevent the slurry from coagulating. The circulating pump transports the slurry to the slurry pipe through the first circulation pipe and the second circulation pipe for re-circulation detection, and the slurry returns to the spraying area of the desulfurization tower through the slurry pipe. Compared with the prior art, the density and pH value of the slurry can be accurately detected.

[0004] However, when the above device detects the pH value of the liquid in the desulfurization tower, the detection end of the detector extends into the liquid, and it is easy to cause wear on the outer wall of the detection end after long-term contact with the liquid, thereby reducing the detection accuracy of the pH value. Content of the Utility Model

[0005] In view of the problems existing in the above-mentioned existing on-line detection device for the pH value of a desulfurization tower in the deep processing of coal tar, the present utility model is proposed, which solves the problem that the outer wall of the detection end of the detector is easily worn due to long-term contact with the solution, thereby reducing the detection accuracy.

[0006] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0007] An on-line detection device for the pH value of a desulfurization tower in the deep processing of coal tar, comprising a tower body and a liquid pipe connected to the tower body. Two symmetrically arranged detection cylinders are fixedly penetrated through the pipe wall of the liquid pipe. A bottom plate is fixedly arranged between the two detection cylinders. A support plate is fixedly arranged on the top of the bottom plate. A placement plate is fixedly arranged on the top of the support plate. An on-line pH detector is fixedly arranged on the top of the placement plate. The on-line pH detector is connected with two detection heads, and the two detection heads are respectively arranged in the two detection cylinders;

[0008] A rotating transposition mechanism is arranged between the ends of the two detection heads and the support plate for driving the two detection heads to switch and use;

[0009] Sealing plates are slidably inserted through the sides of the two detection cylinders, and an elastic plugging mechanism is provided between the sealing plates and the support plate.

[0010] Preferably, the rotation and transposition mechanism includes a rotating rod rotatably arranged inside the support plate. A rotating plate is fixedly sleeved at the rear end of the rotating rod. Strip-shaped holes are formed at both ends inside the rotating plate. Guide rods are fixedly inserted through the upper ends of the two detection heads, and the guide rods are slidably arranged inside the strip-shaped holes.

[0011] Preferably, the elastic plugging mechanism includes a cross bar. A slot for inserting the cross bar is formed on the side of the sealing plate close to the support plate. A spring is sleeved on the rod wall of the cross bar, and both ends of the spring are fixedly connected to the support plate and the sealing plate respectively.

[0012] Preferably, two mounting plates are fixedly arranged at the upper end of the outer wall of the support plate. A worm is rotatably arranged between the two mounting plates. The worm meshes with a worm gear, and the worm gear is fixedly sleeved with the rotating rod.

[0013] Furthermore, the bottom of the worm passes through the mounting plate and is fixedly provided with a rotating block.

[0014] Preferably, the cross section of the guide rod is in a T shape.

[0015] Preferably, the upper sides of the far ends of the two sealing plates are both beveled.

[0016] Preferably, a sealing groove is provided on the inner wall of the detection cylinder close to the sealing plate. A sealing sleeve is fixedly embedded on the inner wall of the sealing groove, and the sealing sleeve is sleeved and matched with the end of the sealing plate.

[0017] Preferably, a perforation for sliding the sealing plate is formed on the side of the detection cylinder.

[0018] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0019] 1. By providing a liquid pipe, a detection cylinder, a support plate, an on-line pH detector, a detection head, a rotation and transposition mechanism, a mounting plate, a worm gear and a worm, the two detection heads can be separated for use, so that while the pH value is detected, the impurities attached to the outside of the detection head can be cleaned, ensuring that the detection head can perform continuous and stable detection while ensuring the detection accuracy.

[0020] 2. By providing a detection cylinder, a sealing plate, a support plate and an elastic plugging mechanism, when one side of the detection head does not extend into the liquid pipe for pH value detection, the detection cylinder on that side can be plugged to prevent external impurities from entering the liquid pipe and affecting the stability of coal tar deep processing. Description of the Drawings

[0021] Figure 1It is a schematic structural diagram of the present utility model;

[0022] Figure 2 is Figure 1 an enlarged schematic view of part A of;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the guide rod.

[0024] Explanation of reference numerals: 1, tower body; 2, liquid pipe; 3, detection cylinder; 4, bottom plate; 5, support plate; 6, placement plate; 7, on-line pH detector; 8, detection head; 9, sealing plate; 10, rotating rod; 11, rotating plate; 12, guide rod; 13, cross bar; 14, spring; 15, mounting plate; 16, worm; 17, worm gear; 18, rotating block; 19, sealing sleeve. Specific implementation mode

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

[0026] The embodiment of the present utility model discloses an on-line pH detection device for coal tar deep processing desulfurization tower.

[0027] Embodiment 1

[0028] The present utility model provides an on-line pH detection device for coal tar deep processing desulfurization tower as shown in Figures 1-3 which includes a tower body 1 and a liquid pipe 2 connected to the tower body 1. Two symmetrically arranged detection cylinders 3 are fixedly penetrated through the pipe wall of the liquid pipe 2. A bottom plate 4 is fixedly arranged between the two detection cylinders 3. A support plate 5 is fixedly arranged on the top of the bottom plate 4. A placement plate 6 is fixedly arranged on the top of the support plate 5. An on-line pH detector 7 is fixedly arranged on the top of the placement plate 6. The on-line pH detector 7 is connected with two detection heads 8, and the two detection heads 8 are respectively arranged in the two detection cylinders 3;

[0029] A rotation and transposition mechanism for driving the two detection heads 8 to switch and use is arranged between the ends of the two detection heads 8 and the support plate 5. The rotation and transposition mechanism includes a rotating rod 10. The rotating rod 10 is rotatably arranged in the support plate 5. A rotating plate 11 is fixedly sleeved at the rear end of the rotating rod 10. Strip-shaped holes are respectively opened at both ends inside the rotating plate 11. The upper ends of the two detection heads 8 are fixedly penetrated with guide rods 12. The cross section of the guide rod 12 is in a T shape. The guide rod 12 is slidably arranged in the strip-shaped hole.

[0030] During the coal tar production process, the tower body 1 cooperates with the liquid pipe 2 to circulate the solution, and at this time, the online pH detector 7 cooperates with the left detection head 8 to detect the pH value of the solution inside the liquid pipe 2. At the same time, the detection head 8 is located in the detection tube 3 but not inserted into the liquid pipe 2. After the left detection head 8 has been used for a long time, the rotating rod 10 can be rotated to rotate the rotating plate 11. At this time, under the sliding cooperation of the guide rod 12 and the strip hole, the left detection head 8 is pulled up and pulled out of the liquid pipe 2, and the right detection head 8 passes through the detection tube 3 and is inserted into the liquid pipe 2 to continue to detect the pH of the solution. Similarly, when the right detection head 8 is performing the detection work, the outside of the removed left detection head 8 can be cleaned and inspected to ensure that it can still enter the liquid pipe 2 for detection later. By switching the two detection heads 8 back and forth, it can be ensured that the detection work continues, and the two detection heads 8 can be regularly inspected to avoid damage as much as possible.

[0031] Example 2

[0032] Embodiment 2 is based on Embodiment 1, in order to enable the rotating rod 10 to rotate stably, as shown in FIG. Figures 2-3 As shown, two mounting plates 15 are fixedly provided at the upper end of the outer wall of the support plate 5, a worm 16 is rotatably provided between the two mounting plates 15, a worm wheel 17 is meshed with the worm 16, the worm wheel 17 is fixedly sleeved with the rotating rod 10, and the bottom of the worm 16 passes through the mounting plate 15 and is fixedly provided with a rotating block 18.

[0033] When the two detection heads 8 need to be switched, the rotating block 18 can be pushed to rotate, so that the rotating block 18 drives the worm 16 to rotate. Through the cooperation of the worm 16 and the worm wheel 17, the worm wheel 17 can drive the rotating rod 10 to rotate.

[0034] Example 3

[0035] Example 3 is based on Example 1. In order to ensure that external debris does not enter the liquid pipe 2 during the detection work and ensure the stability of the coal tar processing process, as shown in Example 1. Figures 1-2 As shown, sealing plates 9 are slidably penetrated on the sides of the two detection tubes 3, and through holes are provided on the sides of the detection tubes 3 to cooperate with the sliding of the sealing plates 9. The upper sides of the two sealing plates 9 away from each other are inclined, and an elastic sealing mechanism is provided between the sealing plates 9 and the support plate 5. The elastic sealing mechanism includes a cross bar 13, and a slot for plugging the cross bar 13 is provided on the side of the sealing plate 9 close to the support plate 5. A spring 14 is sleeved on the rod wall of the cross bar 13, and the two ends of the spring 14 are respectively fixedly connected to the support plate 5 and the sealing plate 9. A sealing groove is provided on the inner wall of the detection tube 3 close to the side of the sealing plate 9, and a sealing sleeve 19 is fixedly embedded in the inner wall of the sealing groove, and the sealing sleeve 19 is sleeved and matched with the end of the sealing plate 9.

[0036] When the detection head 8 on one side does not enter the liquid pipe 2 for detection work, the end of the internal sealing plate 9 of the detection cylinder 3 on that side is inserted into the sealing groove and cooperates with the sealing sleeve 19 to block the detection cylinder 3. At this time, external sundries cannot enter the liquid pipe 2 through the detection cylinder 3, ensuring the stability of coal tar deep processing. When replacing the detection head 8, when the detection head 8 moves downward, it contacts the inclined surface of the sealing plate 9, causing the sealing plate 9 to be pushed to move horizontally under the support of the cross bar 13 and squeeze the spring 14. When the detection head 8 enters the liquid pipe 2, the detection head 8 can be squeezed by the elastic force of the spring 15 to assist in positioning the detection head 8 and ensure the stability of the detection head 8 during the detection process.

Claims

1. An online detection device for pH value of a coal tar deep processing desulfurization tower, comprising a tower body (1) and a liquid pipe (2) connected to the tower body (1), characterized in that: Two symmetrically arranged detection tubes (3) are fixedly provided on the wall of the liquid tube (2); a bottom plate (4) is fixedly provided between the two detection tubes (3); a support plate (5) is fixedly provided on the top of the bottom plate (4); a placement plate (6) is fixedly provided on the top of the support plate (5); an online pH detector (7) is fixedly provided on the top of the placement plate (6); the online pH detector (7) is connected to two detection heads (8); the two detection heads (8) are respectively provided in the two detection tubes (3); A rotational switching mechanism for driving the two detection heads (8) to switch between use is provided between the ends of the two detection heads (8) and the support plate (5); A sealing plate (9) is slidably provided on the sides of the two detection cylinders (3), and an elastic sealing mechanism is provided between the sealing plate (9) and the support plate (5).

2. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1 is characterized in that: The rotation and shifting mechanism comprises a rotating rod (10), the rotating rod (10) is rotatably arranged in the supporting plate (5), a rotating plate (11) is fixedly sleeved on the rear end of the rotating rod (10), strip holes are opened at both ends of the rotating plate (11), and guide rods (12) are fixedly penetrated at the upper ends of the two detection heads (8), and the guide rods (12) are slidably arranged in the strip holes.

3. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1 is characterized in that: The elastic blocking mechanism comprises a cross bar (13); a slot for plugging the cross bar (13) is provided on a side of the sealing plate (9) close to the support plate (5); a spring (14) is sleeved on the wall of the cross bar (13); and two ends of the spring (14) are respectively fixedly connected to the support plate (5) and the sealing plate (9).

4. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1 is characterized in that: Two mounting plates (15) are fixedly provided at the upper end of the outer wall of the support plate (5), a worm (16) is rotatably provided between the two mounting plates (15), a worm wheel (17) is meshed with the worm (16), and the worm wheel (17) is fixedly sleeved with the rotating rod (10).

5. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 4 is characterized in that: The bottom of the worm (16) passes through the mounting plate (15) and is fixed with a rotating block (18).

6. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 2, characterized in that: The cross section of the guide rod (12) is T-shaped.

7. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1 is characterized in that: The upper sides of the two sealing plates (9) which are away from each other at one end are both arranged in an inclined surface.

8. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1 is characterized in that: A sealing groove is provided on the inner wall of the detection tube (3) near the sealing plate (9), a sealing sleeve (19) is fixedly embedded in the inner wall of the sealing groove, and the sealing sleeve (19) is sleeve-fitted with the end of the sealing plate (9).

9. The online detection device for pH value of coal tar deep processing desulfurization tower according to claim 1, characterized in that: The side of the detection cylinder (3) is provided with a through hole for slidingly cooperating with the sealing plate (9).

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