A sulfuric acid buffer tank sampling device

Abstract

The utility model discloses a sulfuric acid buffer tank sampling device relates to sulfuric acid production sampling technical field, including liquid storage subassembly, negative pressure suction subassembly, overflow tank is connected with the cover plate through the flange, and the liquid storage subassembly includes the liquid storage cylinder, suction pipe, sealing element, liquid discharge spare, liquid discharge valve, first check valve, and the negative pressure suction subassembly includes negative pressure cylinder, negative pressure spare, communicating pipe, exhaust pipe, second check valve, through setting negative pressure cylinder, negative pressure spare, form the negative pressure in negative pressure cylinder and communicate the liquid storage cylinder, and the suction pipe on the liquid storage cylinder extends into the overflow tank, under the suction of negative pressure in negative pressure cylinder, the first check valve in suction pipe opens, and the second check valve on the liquid discharge pipe on negative pressure cylinder closes, can suck the sulfuric acid sample in the overflow tank and store in the storage cylinder, do not need to frequently dismouting cover plate, and the sampling personnel do not need long time contact sulfuric acid gas, and sampling is convenient and can carry out sampling in time, fast.

Description

Technical Field

[0001] This utility model relates to the field of sulfuric acid production sampling technology, specifically to a sulfuric acid buffer tank sampling device. Background Technology

[0002] After sulfuric acid is produced, it is stored in sulfuric acid storage tanks. Before the sulfuric acid is sold, the finished sulfuric acid needs to be sampled daily by flowing into a buffer tank. After the sample passes the test, it is transferred from the buffer tank to a high-level tank for loading and sale. The existing sulfuric acid buffer tanks are usually hollow rectangular tanks with pipes on them. Flanges are welded to the pipes, and the cover plate is connected to the flange with bolts to seal the pipes. Currently, the sampling process is all done manually. The bolts connecting the cover plate and the flange need to be removed, and then a sampling tool such as a steel cylinder is used to insert into the sampling pipe to take sulfuric acid. During the sampling, workers come into direct contact with sulfuric acid, and there is a risk of inhaling sulfuric acid gas such as sulfur trioxide from the pipe opening. In addition, the sampling process is cumbersome, and after the sampling is completed, the bolts need to be tightened again to seal the pipes. Utility Model Content

[0003] The main objective of this invention is to provide a sulfuric acid buffer tank sampling device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a sulfuric acid buffer tank sampling device, wherein a cover plate is connected to the overflow tank via a flange; and further includes: The liquid storage assembly includes a liquid storage cylinder mounted on a cover plate and a suction tube mounted on the liquid storage cylinder; a sealing element is provided between the liquid storage cylinder and the cover plate, and a drain element is provided on the liquid storage cylinder; a drain valve is provided on the drain element; the suction tube extends into an overflow trough, and a first one-way valve is provided inside the suction tube; A negative pressure suction assembly includes a negative pressure cylinder mounted on a cover plate and a negative pressure component movably mounted inside the negative pressure cylinder. A connecting pipe is provided between the negative pressure cylinder and a liquid storage cylinder, and an exhaust pipe is provided on the negative pressure cylinder. A second one-way valve is provided inside the exhaust pipe. One end of the connecting pipe is connected to the top of the liquid storage cylinder, and the other end is connected to the bottom of the negative pressure cylinder. A driving component is provided on the negative pressure component. Under the action of an external force, the driving component drives the negative pressure component to move upward inside the negative pressure cylinder, thereby opening the first one-way valve and closing the second one-way valve. Under the action of an external force, the driving component drives the negative pressure component to move downward inside the negative pressure cylinder, thereby opening the second one-way valve and closing the first one-way valve.

[0005] As a further improvement of this utility model, the sealing plate has a mounting hole in the center; the liquid storage cylinder has a connecting pipe; the sealing element is a sealing ring; the sealing ring is sleeved on the connecting pipe; the connecting pipe has a locking sleeve, and the connecting pipe passes through the mounting hole and connects with the locking sleeve to connect the liquid storage cylinder and the sealing plate.

[0006] As a further improvement of this utility model, the outer wall of the liquid storage cylinder is provided with a capacity scale.

[0007] As a further improvement of this utility model, the draining component includes an air inlet pipe disposed at the top of the liquid storage cylinder and a draining pipe disposed at the bottom of the liquid storage cylinder; an air inlet valve is provided on the air inlet pipe; and the draining valve is located on the draining pipe.

[0008] As a further improvement of this utility model, the negative pressure component includes a piston disposed inside a negative pressure cylinder and a negative pressure rod disposed on the piston; the negative pressure rod is threadedly connected to the negative pressure cylinder; the driving component includes a driving disc connected to the negative pressure rod and a driving handle disposed on the driving disc.

[0009] As a further improvement of this utility model, a rainproof sleeve is provided between the drive disc and the negative pressure cylinder.

[0010] The beneficial effects of this utility model are reflected in: By setting up a negative pressure cylinder and negative pressure components, a negative pressure is formed inside the negative pressure cylinder and connected to the storage cylinder. The suction pipe on the storage cylinder extends into the overflow tank. Under the suction of the negative pressure inside the negative pressure cylinder, the first one-way valve in the suction pipe opens and the second one-way valve on the drain pipe on the negative pressure cylinder closes. The sulfuric acid sample in the overflow tank can be sucked into the storage cylinder for storage without the need for frequent disassembly and assembly of the sealing plate. Moreover, the sampling personnel do not need to be exposed to sulfuric acid gas for a long time. Sampling is convenient and can be carried out at any time and quickly. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a sulfuric acid buffer tank sampling device according to the present invention; Figure 2 This is a schematic diagram of the connection structure of the liquid storage component and the negative pressure suction component of the sulfuric acid buffer tank sampling device of this utility model; Figure 3 This is a schematic diagram of the negative pressure suction component of a sulfuric acid buffer tank sampling device according to the present invention; Explanation of reference numerals in the attached figures: 1. Overflow trough; 2. Cover plate; 3. Liquid storage tank; 4. Suction pipe; 5. Seal; 6. Drainage component; 601. Air inlet pipe; 602. Drainage pipe; 603. Air inlet valve; 604. Retaining ring; 7. Drainage valve; 8. First check valve; 9. Negative pressure cylinder; 10. Negative pressure component; 1001. Piston; 1002. Negative pressure rod; 11. Connecting pipe; 12. Exhaust pipe; 13. Second check valve; 14. Driving component; 1401. Driving disc; 1402. Driving handle; 15. Pipe port; 16. Flange; 17. Bolt; 18. Connecting pipe; 19. Locking sleeve; 20. Capacity scale; 21. Connecting ring; 22. Screw hole; 23. Connecting disc; 24. Bearing; 25. Rain cover. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0013] In one embodiment, see Figure 1 The present invention relates to a sulfuric acid buffer tank sampling device, comprising a liquid storage component and a negative pressure suction component.

[0014] The overflow tank 1 is connected to a cover plate 2 via a flange; the liquid storage assembly includes a liquid storage cylinder 3 mounted on the cover plate 2 and a suction pipe 4 mounted on the liquid storage cylinder 3. A sealing element 5 is provided between the liquid storage cylinder 3 and the cover plate 2. A drain element 6 is provided on the liquid storage cylinder 3, and a drain valve 7 is provided on the drain element 6; the suction pipe 4 extends into the overflow tank 1, and a first one-way valve 8 is provided inside the suction pipe 4; the negative pressure suction assembly includes a negative pressure cylinder 9 mounted on the cover plate 2 and a negative pressure element 10 movably mounted inside the negative pressure cylinder 9. A communication is provided between the negative pressure cylinder 9 and the liquid storage cylinder 3. The pipe 11 and the negative pressure cylinder 9 are provided with an exhaust pipe 12, and a second one-way valve 13 is provided inside the exhaust pipe 12; one end of the connecting pipe 11 is connected to the top of the liquid storage cylinder 3, and the other end is connected to the bottom of the negative pressure cylinder 9; the negative pressure component 10 is provided with a driving component 14, which drives the negative pressure component 10 to move upward in the negative pressure cylinder 9 under the action of external force, so that the first one-way valve 8 is opened and the second one-way valve 13 is closed; the driving component 14 drives the negative pressure component 10 to move downward in the negative pressure cylinder 9 under the action of external force, so that the second one-way valve 13 is opened and the first one-way valve 8 is closed.

[0015] The overflow trough 1 is welded with a pipe opening 15, and a flange 16 is welded to the pipe opening 15. The cover plate 2 is a circular plate, and the flange and the cover plate 2 are connected by bolts 17.

[0016] Further, see Figure 1 The sealing plate 2 has a mounting hole in the center; the liquid storage cylinder 3 is provided with a connecting pipe 18, the sealing element 5 is a sealing ring, the sealing ring is sleeved on the connecting pipe 18, the connecting pipe 18 is provided with a locking sleeve 19, the connecting pipe 18 passes through the mounting hole and connects with the locking sleeve 19 to connect the liquid storage cylinder 3 and the sealing plate 2.

[0017] Preferably, the connecting pipe 18 is a hollow cylindrical pipe, and the connecting pipe 18 and the locking sleeve 19 are connected by threads. After the connecting pipe 18 passes through the mounting hole, the sealing ring is put on the connecting pipe 18, and the locking sleeve 19 is threadedly connected to the connecting pipe 18, thereby installing the liquid storage cylinder 3 on the cover plate 2.

[0018] Preferably, the suction tube 4 is located inside the connecting tube 18 and is connected to the liquid storage cylinder 3.

[0019] Further, see Figure 1 The outer wall of the liquid storage cylinder 3 is provided with a capacity scale 20.

[0020] Preferably, the liquid storage cylinder 3 is a hollow cylindrical cylinder, the outer diameter of the liquid storage cylinder 3 is larger than the inner diameter of the mounting hole, and the liquid storage cylinder 3 is made of transparent high-strength fiberglass.

[0021] Further, see Figure 1 , 2 The draining component 6 includes an air inlet pipe 601 located at the top of the liquid storage cylinder 3 and a draining pipe 602 located at the bottom of the liquid storage cylinder 3. An air inlet valve 603 is provided on the air inlet pipe 601, and a draining valve 7 is located on the draining pipe 602.

[0022] Preferably, the connecting pipe 18 is provided with a retaining ring 604, and there is a gap between the retaining ring 604 and the liquid storage cylinder 3. After the connecting pipe 18 is connected to the locking sleeve 19, the locking sleeve 19 and the retaining ring 604 are respectively clamped on both sides of the sealing plate 2, and there is a gap between the liquid storage cylinder 3 and the sealing plate 2, which facilitates the installation of the drain pipe 602 and subsequent liquid extraction.

[0023] In the above setup, after negative pressure is generated in the negative pressure cylinder 9 and transmitted to the liquid storage cylinder 3 through the connecting pipe 11, the negative pressure in the liquid storage cylinder 3 causes the first one-way valve 8 in the suction pipe 4 to open. The liquid in the overflow tank 1 moves up from the suction pipe 4 into the liquid storage cylinder 3 for storage. The amount of liquid taken can be controlled according to the capacity scale 20 on the outer wall of the liquid storage cylinder 3. After the liquid is taken, the first one-way valve 8 is closed, the air inlet valve 603 is opened to allow external air to enter the liquid storage cylinder 3, and at the same time the drain valve 7 is opened to drain the liquid from the liquid storage cylinder 3 into the sampling cylinder through the drain pipe 602, thus completing the sampling.

[0024] Further, see Figure 1 , 2 The negative pressure component 10 includes a piston 1001 disposed inside the negative pressure cylinder 9 and a negative pressure rod 1002 disposed on the piston 1001, the negative pressure rod 1002 being threadedly connected to the negative pressure cylinder 9; the driving component 14 includes a driving disc 1401 connected to the negative pressure rod 1002 and a driving handle 1402 disposed on the driving disc 1401.

[0025] Preferably, the negative pressure cylinder 9 is a hollow cylinder, and the bottom end of the negative pressure cylinder 9 is provided with a connecting ring 21. The connecting ring 21 is connected to the cover plate 2 by a stud, thereby connecting the negative pressure cylinder 9 to the cover plate 2.

[0026] Preferably, the top center of the negative pressure cylinder 9 is provided with a screw hole 22, the negative pressure rod 1002 is threadedly connected to the screw hole 22, the piston 1001 is provided with a connecting plate 23, the connecting plate 23 is provided with a concave hole, the concave hole is provided with a bearing 24, and the end of the negative pressure rod 1002 away from the screw hole 22 is connected to the inner ring of the bearing 24.

[0027] Further, see Figure 3 A rain cover 25 is provided between the drive disc 1401 and the negative pressure cylinder 9.

[0028] Preferably, the rain cover 25 is a hollow cylinder with one end open. The rain cover 25 is made of stretchable rubber material and is interference-fitted with the negative pressure cylinder 9.

[0029] In the above configuration, rotating the drive handle 1402 drives the drive disc 1401 to rotate, thereby driving the negative pressure rod 1002 to rotate. Under the action of the thread, the negative pressure rod 1002 moves upward, thereby driving the piston 1001 to move upward in the negative pressure cylinder 9. The first one-way valve 8 opens and the second one-way valve 13 closes. The liquid in the overflow tank 1 enters the storage cylinder 3 from the suction pipe 4. Reverse rotation of the drive handle 1402 drives the negative pressure rod 1002 to rotate. Under the action of the thread, the piston 1001 moves downward along the negative pressure cylinder 9. The second one-way valve 13 opens and the first one-way valve 8 closes. The gas in the negative pressure cylinder 9 is discharged from the exhaust pipe 12. Rotating the drive handle 1402 again drives the piston 1001 to move upward, which can draw the liquid in the overflow tank 1 into the storage cylinder 3 again, thereby allowing sampling in the overflow tank 1. The rain cover 25 can shield the negative pressure rod 1002 and prevent rainwater from corroding the negative pressure rod 1002 and the screw hole 22.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for a sulfuric acid buffer tank, wherein a cover plate (2) is connected to an overflow tank (1) via a flange; characterized in that, include: The liquid storage assembly includes a liquid storage cylinder (3) disposed on a cover plate (2) and a suction pipe (4) disposed on the liquid storage cylinder (3); a sealing element (5) is provided between the liquid storage cylinder (3) and the cover plate (2), and a draining element (6) is provided on the liquid storage cylinder (3); a draining valve (7) is provided on the draining element (6); the suction pipe (4) extends into the overflow tank (1), and a first one-way valve (8) is provided in the suction pipe (4); The negative pressure suction assembly includes a negative pressure cylinder (9) mounted on a cover plate (2) and a negative pressure component (10) movably mounted inside the negative pressure cylinder (9); a connecting pipe (11) is provided between the negative pressure cylinder (9) and the liquid storage cylinder (3), and an exhaust pipe (12) is provided on the negative pressure cylinder (9); a second one-way valve (13) is provided inside the exhaust pipe (12); one end of the connecting pipe (11) is connected to the top of the liquid storage cylinder (3), and the other end is connected to the bottom of the negative pressure cylinder (9); a driving component (14) is provided on the negative pressure component (10); under the action of external force, the driving component (14) drives the negative pressure component (10) to move upward inside the negative pressure cylinder (9), so that the first one-way valve (8) opens and the second one-way valve (13) closes; under the action of external force, the driving component (14) drives the negative pressure component (10) to move downward inside the negative pressure cylinder (9), so that the second one-way valve (13) opens and the first one-way valve (8) closes.

2. The sulfuric acid buffer tank sampling device according to claim 1, characterized in that: The sealing plate (2) has a mounting hole in the center; the liquid storage cylinder (3) has a connecting pipe (18); the sealing element (5) is a sealing ring; the sealing ring is fitted on the connecting pipe (18); the connecting pipe (18) has a locking sleeve (19), and the connecting pipe (18) passes through the mounting hole and connects with the locking sleeve (19) to connect the liquid storage cylinder (3) and the sealing plate (2).

3. The sulfuric acid buffer tank sampling device according to claim 2, characterized in that: The outer wall of the liquid storage cylinder (3) is provided with a capacity scale (20).

4. A sulfuric acid buffer tank sampling device according to claim 3, characterized in that: The draining component (6) includes an air inlet pipe (601) at the top of the liquid storage cylinder (3) and a drain pipe (602) at the bottom of the liquid storage cylinder (3); an air inlet valve (603) is provided on the air inlet pipe (601); and a drain valve (7) is located on the drain pipe (602).

5. A sulfuric acid buffer tank sampling device according to claim 4, characterized in that: The negative pressure component (10) includes a piston (1001) disposed inside the negative pressure cylinder (9) and a negative pressure rod (1002) disposed on the piston (1001); the negative pressure rod (1002) is threadedly connected to the negative pressure cylinder (9); the driving component (14) includes a driving disc (1401) connected to the negative pressure rod (1002) and a driving handle (1402) disposed on the driving disc (1401).

6. A sulfuric acid buffer tank sampling device according to claim 5, characterized in that: A rain cover (25) is provided between the drive disc (1401) and the negative pressure cylinder (9).

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