Depth controllable sulfuric acid tank sampling device

Abstract

The application discloses a controllable-depth sulfuric acid tank sampling device, which comprises a barrel body, a fixed frame is fixedly connected to the circumferential surface of the barrel body, a first lead screw is rotatably connected to the inside of the fixed frame, a moving plate is threadedly connected to the circumferential surface of the first lead screw, a fixed rod is fixedly connected to the upper surface of the moving plate, a supporting plate is fixedly connected to one end of the fixed rod, a connecting rod is fixedly connected to the lower surface of the supporting plate, a sealing device is fixedly connected to one end of the connecting rod, a feeding one-way valve and a discharging one-way valve are arranged on the circumferential surface of the sealing device, a first lead screw is rotatably connected to the upper surface of the supporting plate, a moving rod is threadedly connected to the circumferential surface of the first lead screw, and a fixed plate is fixedly connected to one end of the moving rod. In the application, it can be ensured that the obtained sample comes from the required position, and the possible interference factors from different depths or different liquid surface positions are excluded, so that the risk of the operator contacting sulfuric acid can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sampling, in particular to a sulfuric acid tank sampling device with controllable depth. BACKGROUND

[0002] The sulfuric acid tank is a tank body for storing sulfuric acid in chemical and other industries. Currently, the sulfuric acid tanks for storing sulfuric acid (more than 90%) on the domestic market or in enterprises are made of carbon steel. Concentrated sulfuric acid has strong oxidizing properties and can react with aluminum, iron and other metals to form a dense passivation film (metal oxide film) on the surface of the metal, which acts as a barrier to reactants, protecting the pure metal inside the film from reacting with the strong oxidizing acid outside the film. Therefore, the iron tank for storing concentrated sulfuric acid will generate a dense oxide film where it comes into contact with concentrated sulfuric acid, thus preventing corrosion.

[0003] Application No. CN202021962899.2, titled "Sulfuric acid tank sampling device", discloses the following features, including a sulfuric acid tank body, a tank rack fixedly connected to the top of the sulfuric acid tank body, a tank cover rack fixedly connected to the tank rack, a screw hole formed in the top of the tank cover rack, a fixed screw threadedly connected to the tank cover rack through the screw hole, a tank cover manhole door body fixedly connected to the center of the top of the tank cover rack, a sampling rack welded to the top of the tank cover manhole door body, a handrail frame fixedly connected to the outside of the sampling rack, a cover plate movably connected to the top of the sampling rack, a support frame fixedly connected to the outside of the cover plate, a pressure rod fixedly connected to the inside of the cover plate, and a sampling steel pipe fixedly connected to the inside of the sampling rack.

[0004] The above prior art has the following technical problems when in use. Since the sulfuric acid liquid level in the sulfuric acid tank may change over time, temperature or other factors, the composition and property information of sulfuric acid at different depths will change. Since the depth cannot be accurately controlled for sampling operation, the liquid in the sulfuric acid tank may be mixed unevenly, and the residual sulfuric acid solution in the sampler after sampling may cross-contaminate the sample in subsequent sampling or experiments, resulting in errors, deviations or incorrect results. SUMMARY

[0005] In order to overcome the above technical problems, the purpose of the present application is to provide a sulfuric acid tank sampling device with controllable depth to solve the problem of inconvenient sampling of sulfuric acid at different depths and the influence of residual sulfuric acid in the sampler on subsequent detection results.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] The application discloses a depth-controllable sulfuric acid tank sampling device, which comprises a barrel, a fixed frame is fixedly connected to the circumferential surface of the barrel, a first screw rod is rotatably connected to the inside of the fixed frame, a moving plate is threadedly connected to the circumferential surface of the first screw rod, a fixed rod is fixedly connected to the upper surface of the moving plate, a support plate is fixedly connected to one end of the fixed rod, a connecting rod is fixedly connected to the lower surface of the support plate, a sealing device is fixedly connected to one end of the connecting rod, a feeding one-way valve and a discharging one-way valve are arranged on the circumferential surface of the sealing device, a second screw rod is threadedly connected to the circumferential surface of the second screw rod, a fixed plate is fixedly connected to one end of the moving rod, a piston is fixedly connected to the lower surface of the fixed plate, a spring damper is arranged on the lower surface of the fixed plate, a movable end of the spring damper is fixedly connected to a baffle, a reciprocating screw rod is rotatably connected to the upper surface of the support plate, a sliding plate is threadedly connected to the circumferential surface of the reciprocating screw rod, a fixed pipe is fixedly connected to the inside of the sliding plate, a tooth column is rotatably connected to one end of the fixed pipe, a drainage hole is arranged on the circumferential surface of one end of the tooth column, and a transmission mechanism and a water conveying mechanism are arranged on the upper surface of the support plate.

[0008] Further, a first motor is fixedly connected to the lower surface of the fixed frame, the output end of the first motor is fixedly connected to one end of the first screw rod, the output end of the first motor is fixedly connected with a first gear, and a gear ring is rotatably connected to the circumferential surface of the barrel and is engaged with the first gear.

[0009] Further, the transmission mechanism comprises a third gear and a sixth gear which are rotatably connected to the surface of the support plate, the circumferential surface of the second screw rod is fixedly connected with a fifth gear, the fifth gear is engaged with the sixth gear, the circumferential surface of the reciprocating screw rod is fixedly connected with a second gear and a fourth gear, the second gear is engaged with the tooth column, and the third gear is engaged with the fourth gear.

[0010] Further, an electric cylinder is fixedly connected to the lower surface of the support plate, a second motor is fixedly connected to the movable end of the electric cylinder, first ball bearings are fixedly connected to the two output ends of the second motor, a limiting rod is fixedly connected to the upper surface of the support plate, movable rods are slidably connected to the upper surface of the support plate and the circumferential surface of the limiting rod, second ball bearings are fixedly connected to one end of the two movable rods, springs are fixedly connected to the upper surfaces of the two second ball bearings, the first ball bearings above the second motor are in close contact with the second ball bearings, and the first ball bearings below the second motor are in close contact with the second ball bearings.

[0011] Further in, the first and second ball bearings each comprise a shell, balls and elastic members, the balls are slidably connected inside the shell, and the balls are fixedly connected by the elastic members, the third and sixth gears are internally provided with positioning grooves, and the balls are matched with the positioning grooves in size.

[0012] Further in, the water delivery mechanism comprises a water delivery frame fixedly connected to the upper surface of the support plate, the upper surface of the water delivery frame is fixedly connected with a water inlet shell, the water inlet shell is rotatably connected with a pump head inside, one end of the reciprocating lead screw is fixedly connected with one end of the pump head, the circumferential surface of the water inlet shell is fixedly connected with a drain pipe, one end of the drain pipe is rotatably connected with the inside of the fixed pipe, the upper surface of the support plate is fixedly connected with a water tank, the inside of the water tank is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe is fixedly connected with the circumferential surface of the water inlet shell.

[0013] Further in, the inside of the slide plate is slidably connected with the circumferential surface of the limiting rod, and the inside of the baffle is matched with the piston in size.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. When using the device, the first motor drives the first lead screw to rotate, the first lead screw drives the moving plate to move, the moving plate drives the fixed rod to move, the fixed rod drives the support plate to move, the support plate drives the sealers at one end of the connecting rod to move to the appropriate height, the second motor is driven by the electric cylinder to move, the first ball bearing below the second motor extrudes the second ball bearing inside the sixth gear, the second ball bearing is separated from the sixth gear, the first ball bearing enters the sixth gear, the second motor drives the sixth gear to rotate and the fifth gear to engage, the fifth gear drives the first lead screw to rotate, the first lead screw drives the moving rod to rise, the moving rod drives the piston below the fixed plate to rise, the baffle inside the piston is driven by the spring damper, at this time the feed check valve is opened and the discharge check valve is closed, different depths of sulfuric acid can be sampled, after sampling is completed, the piston is reset to open the discharge check valve and close the feed check valve to discharge the sulfuric acid, which can ensure that the obtained sample comes from the required position and eliminates possible interference factors from different depths or different liquid surface positions, thereby reducing the risk of operators contacting sulfuric acid.

[0016] 2, after use, the motor can be driven by the electric cylinder to rise, the first ball bearing above the second motor extrudes the second ball bearing inside the third gear, so that the second ball bearing is separated from the third gear, so that the first ball bearing enters the third gear, the third gear and the fourth gear are engaged, so that the fourth gear drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the sliding plate to slide downward, the sliding plate drives the tooth column on the circumferential surface of the fixed tube to move downward, the tooth column and the second gear are engaged, so that the tooth column can reciprocate upward and downward and can also rotate, the tooth column moves downward to push the baffle to stretch the spring damper, the reciprocating screw rod rotates at the same time to drive the pump head to work, the pump head draws out the cleaning liquid of the water tank through the water inlet pipe, and enters the inside of the fixed tube through the drain pipe, and finally is discharged through the drain hole, that is, the residual sulfuric acid solution in the sealed pipe can be flushed and cleaned, the water flow is discharged through the one-way valve, which avoids the cross contamination of the residual sulfuric acid solution with the subsequent sample, causes the test result to appear error, and can quickly complete the cleaning process, reduces the pause time between sampling, and optimizes the work flow. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings.

[0018] Figure 1 is the overall structure schematic diagram of the application;

[0019] Figure 2 is the structure sectional view of the application;

[0020] Figure 3 is the local enlarged view of A in the application; Figure 2

[0021] Figure 4 is the local enlarged view of B in the application; Figure 2

[0022] Figure 5 is the local enlarged view of C in the application; Figure 2

[0023] Figure 6 is the local enlarged view of D in the application. Figure 1

[0024] ​​​​In the diagram: 1. Barrel body; 2. Fixing frame; 3. Gear ring; 4. First lead screw; 5. Moving plate; 6. Fixing rod; 7. First motor; 8. First gear; 9. Support plate; 10. Connecting rod; 11. Sealer; 12. Feed check valve; 13. Discharge check valve; 14. Second lead screw; 15. Moving rod; 16. Fixing plate; 17. Piston; 18. Spring damper; 19. Baffle; 20. Reciprocating lead screw; 21. 1. Limiting rod; 22. Slide plate; 23. Fixing tube; 24. Gear column; 25. Second gear; 26. Second motor; 27. Spring; 28. Movable rod; 29. ​​First ball bearing; 30. Second ball bearing; 31. Electric cylinder; 32. Pump head; 33. Water inlet pipe; 34. Drain pipe; 35. Drain hole; 36. Water tank; 37. Third gear; 38. Fourth gear; 39. Fifth gear; 40. Sixth gear. Detailed Implementation

[0025] Please see Figures 1-6 As shown, a depth-controlled sulfuric acid tank sampling device includes a tank body 1. A fixing frame 2 is fixedly connected to the circumferential surface of the tank body 1. A first lead screw 4 is rotatably connected inside the fixing frame 2. A movable plate 5 is threadedly connected to the circumferential surface of the first lead screw 4. A fixing rod 6 is fixedly connected to the upper surface of the movable plate 5. A support plate 9 is fixedly connected to one end of the fixing rod 6. A connecting rod 10 is fixedly connected to the lower surface of the support plate 9. A sealing device 11 is fixedly connected to one end of the connecting rod 10. A feed check valve 12 and a discharge check valve 13 are provided on the circumferential surface of the sealing device 11. A movable rod is threadedly connected to the circumferential surface of a second lead screw 14. 15. A fixed plate 16 is fixedly connected to one end of the moving rod 15. A piston 17 is fixedly connected to the lower surface of the fixed plate 16. A spring damper 18 is provided on the lower surface of the fixed plate 16. A baffle 19 is fixedly connected to the movable end of the spring damper 18. A reciprocating screw 20 is rotatably connected to the upper surface of the support plate 9. A slide plate 22 is threadedly connected to the circumferential surface of the reciprocating screw 20. A fixed tube 23 is fixedly connected inside the slide plate 22. A toothed column 24 is rotatably connected to one end of the fixed tube 23. A drain hole 35 is provided on the circumferential surface of one end of the toothed column 24. A transmission mechanism and a water conveying mechanism are provided on the upper surface of the support plate 9.

[0026] When the device is used, at this time the first motor 7 drives the first lead screw 4 to rotate, the first lead screw 4 drives the moving plate 5 to move, the moving plate 5 drives the fixed rod 6 to move, the fixed rod 6 drives the support plate 9 to move, the support plate 9 drives the seal 11 at one end of the connecting rod 10 to move to the appropriate height, at this time the electric cylinder 31 drives the second motor 26 to move, so that the first ball bearing 29 below the second motor 26 extrudes the second ball bearing 30 inside the sixth gear 40, so that the second ball bearing 30 is separated from the sixth gear 40, so that the first ball bearing 29 enters the sixth gear 40, the second motor 26 can drive the sixth gear 40 to rotate and the fifth gear 39 to engage, so that the fifth gear 39 drives the second lead screw 14 to rotate, the second lead screw 14 drives the moving rod 15 to rise, the moving rod 15 drives the piston 17 below the fixed plate 16 to rise, the baffle 19 inside the piston 17 is driven by the spring damper 18, at this time the feed one-way valve 12 is opened, the discharge one-way valve 13 is closed, and different depths of sulfuric acid can be sampled, after sampling is completed, the piston 17 is reset to open the discharge one-way valve 13, and the feed one-way valve 12 is closed to discharge the sulfuric acid, which can ensure that the obtained sample comes from the required position and eliminates possible interference factors from different depths or different liquid level positions, thereby reducing the risk of operators contacting sulfuric acid;

[0027] After sampling is completed, the motor can be raised by the electric cylinder 31, the first ball bearing 29 above the second motor 26 extrudes the second ball bearing 30 inside the third gear 37, so that the second ball bearing 30 is separated from the third gear 37, so that the first ball bearing 29 enters the third gear 37, the third gear 37 and the fourth gear 38 are engaged, so that the fourth gear 38 drives the reciprocating lead screw 20 to rotate, the reciprocating lead screw 20 drives the sliding plate 22 to slide downward, the sliding plate 22 drives the tooth column 24 on the circumferential surface of the fixed tube 23 to move downward, and the tooth column 24 and the second gear 25 are engaged, so that the tooth column 24 can reciprocate upward and downward while rotating, the tooth column 24 moves downward to stretch the spring damper 18, the reciprocating lead screw 20 rotates while driving the pump head 32 to work, the pump head 32 draws the cleaning liquid in the water tank 36 through the water inlet pipe 33, and then enters the inside of the fixed tube 23 through the drain pipe 34, and finally is discharged through the drain hole 35, so that the residual sulfuric acid solution in the sealed tube can be flushed and cleaned, the water flow is discharged through the discharge one-way valve 13, which avoids cross contamination of the residual sulfuric acid solution with the subsequent sample, causes the test result to have an error, and can quickly complete the cleaning process, reduce the pause time between sampling, and optimize the work flow.

[0028] The lower surface of the fixing frame 2 is fixedly connected with a first motor 7, the output end of the first motor 7 is fixedly connected with one end of a first lead screw 4, the output end of the first motor 7 is fixedly connected with a first gear 8, the circumferential surface of the barrel body 1 is rotatably connected with a gear ring 3, and the gear ring 3 and the first gear 8 are meshed with each other.

[0029] The first motor 7 drives the first gear 8 to rotate and mesh with the gear ring 3, so that the meshing rotation of the other end of the first gear 8 can drive the first lead screw 4 to rotate, the lifting of the support plate 9 is more stable, and therefore the stability of sulfuric acid sampling can be improved.

[0030] The transmission mechanism comprises a third gear 37 and a sixth gear 40 rotatably connected to the surface of the support plate 9, the circumferential surface of the second lead screw 14 is fixedly connected with a fifth gear 39, the fifth gear 39 and the sixth gear 40 are meshed with each other, the circumferential surface of the reciprocating lead screw 20 is fixedly connected with a second gear 25 and a fourth gear 38, the second gear 25 and the gear column 24 are meshed with each other, the third gear 37 and the fourth gear 38 are meshed with each other, the side surface of the support plate 9 is fixedly connected to the electric cylinder 31 on the lower surface of the support plate 9, the movable end of the electric cylinder 31 is fixedly connected with a second motor 26, both ends of the output end of the second motor 26 are fixedly connected with a first ball bearing 29, the upper surface of the support plate 9 is fixedly connected with a limiting rod 21, the circumferential surface of the limiting rod 21 and the upper surface of the support plate 9 are both slidably connected with a movable rod 28, one end of each of the two movable rods 28 is fixedly connected with a second ball bearing 30, the upper surface of the second ball bearing 30 above the second motor 26 is fixedly connected with a spring 27, and the first ball bearing 29 below the second motor 26 is in close contact with the second ball bearing 30.

[0031] The electric cylinder 31 can drive the motor to move to different positions, the sulfuric acid can be sampled or cleaned according to the needs of the user, and when cleaning, the inside of the sealing device 11 can be flushed by rotating and descending, thereby improving the cleaning effect and range.

[0032] The first ball bearing 29 and the second ball bearing 30 each comprise a shell, a ball and an elastic member, the balls are slidably connected in the shell, and the balls are fixedly connected by the elastic member, the third gear 37 and the sixth gear 40 are provided with positioning grooves, and the balls are matched with the positioning grooves in size.

[0033] The second ball bearing 30 is used for limiting the third gear 37 and the sixth gear 40, and the first ball bearing 29 is used for connecting and driving the third gear 37 or the sixth gear 40 to complete sampling or cleaning.

[0034] The water delivery mechanism comprises a water delivery frame fixedly connected to the upper surface of the support plate 9, the upper surface of the water delivery frame is fixedly connected with a water inlet shell, the water inlet shell is rotatably connected with a pump head 32 inside, one end of the reciprocating wire rod 20 is fixedly connected with one end of the pump head 32, the circumferential surface of the water inlet shell is fixedly connected with a drain pipe 34, one end of the drain pipe 34 is rotatably connected with the inside of the fixed pipe 23, the upper surface of the support plate 9 is fixedly connected with a water tank 36, the inside of the water tank 36 is fixedly connected with a water inlet pipe 33, the other end of the water inlet pipe 33 is fixedly connected with the circumferential surface of the water inlet shell.

[0035] The pump head 32 rotates to generate negative pressure, so that the cleaning liquid in the water tank 36 is sent to the inside of the sealing device 11 to clean the inside of the sealing device 11, thereby reducing the cleaning work efficiency of the staff and increasing the sampling efficiency.

[0036] The inside of the sliding plate 22 is slidably connected with the circumferential surface of the limiting rod 21, so as to conveniently limit the sliding plate 22, the inside dimension of the baffle 19 is matched with the inside dimension of the piston 17, so as to conveniently cooperate with the piston 17 to increase the sealing property when sampling sulfuric acid.

[0037] The above content is only an example and description of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the invention or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A depth-controllable sulfuric acid tank sampling apparatus characterized by comprising: The utility model provides a kind of water tank, including barrel, the circumferential surface of barrel is fixedly connected with fixed frame, the inside rotationally connected with first screw rod of fixed frame, the circumferential surface of first screw rod is threadedly connected with moving plate, the upper surface of moving plate is fixedly connected with fixed rod, the one end of fixed rod is fixedly connected with support plate, the lower surface of support plate is fixedly connected with connecting rod, the one end of connecting rod is fixedly connected with sealing device, the circumferential surface of sealing device is provided with inlet one-way valve and discharge one-way valve, the circumferential surface of second screw rod is threadedly connected with moving rod, the one end of moving rod is fixedly connected with fixed plate, the lower surface of fixed plate is fixedly connected with piston, the lower surface of fixed plate is provided with spring damper, the movable end of spring damper is fixedly connected with baffle, the upper surface of support plate is rotatably connected with reciprocating screw rod, the circumferential surface of reciprocating screw rod is threadedly connected with slide plate, the inside of slide plate is fixedly connected with fixed tube, the one end of fixed tube is rotatably connected with tooth column, the circumferential surface of one end of tooth column is provided with drain hole, the upper surface of support plate is provided with transmission mechanism and water delivery mechanism; The transmission mechanism includes third gear and sixth gear rotatably connected on the surface of support plate, the circumferential surface of second screw rod is fixedly connected with fifth gear, and fifth gear and sixth gear are meshed with each other, the circumferential surface of reciprocating screw rod is fixedly connected with second gear and fourth gear, and second gear and tooth column are meshed with each other, and third gear and fourth gear are meshed with each other. The side surface of support plate is fixedly connected with electric cylinder on the lower surface of support plate, the movable end of electric cylinder is fixedly connected with second motor, the two end output ends of second motor are both fixedly connected with first ball bearing, the upper surface of support plate is fixedly connected with limiting rod, the circumferential surface of limiting rod and the upper surface of support plate are both slidably connected with movable rod, the one end of two movable rods is both fixedly connected with second ball bearing, the upper surface of two second ball bearings is both fixedly connected with spring, the first ball bearing above second motor and the second ball bearing are in close contact, and the first ball bearing below second motor and the second ball bearing are in close contact with each other. The water delivery mechanism includes water delivery frame fixedly connected on the upper surface of support plate, the upper surface of water delivery frame is fixedly connected with water inlet shell, the inside of water inlet shell is rotatably connected with pump head, one end of reciprocating screw rod and one end of pump head are fixedly connected, the circumferential surface of water inlet shell is fixedly connected with drain pipe, one end of drain pipe and the inside of fixed tube are rotatably connected, the upper surface of support plate is fixedly connected with water tank, the inside of water tank is fixedly connected with water inlet pipe, and the other end of water inlet pipe and the circumferential surface of water inlet shell are fixedly connected.

2. A depth-controllable sampling device for a sulfuric acid tank according to claim 1, characterized in that, The lower surface of fixed frame is fixedly connected with first motor, the output end of first motor and one end of first screw rod are fixedly connected, the output end of first motor is fixedly connected with first gear, the circumferential surface of barrel is rotatably connected with gear ring, and gear ring and first gear are meshed with each other.

3. A depth-controllable sampling device for a sulfuric acid tank according to claim 1, characterized in that, The first and second ball bearings each comprise a shell, balls and elastic members, the balls are slidably connected in the interior of the shell, and the balls are fixedly connected by the elastic members, the third and sixth gears are provided with positioning grooves in the interiors thereof, and the balls are matched in size with the positioning grooves.

4. A depth-controllable sampling device for a sulfuric acid tank according to claim 1, characterized in that, The interior of the slide plate is slidably connected with the circumferential surface of the limiting rod, and the interior of the baffle is matched in size with the piston.

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