A device for ensuring the safety of unloading concentrated sulfuric acid

Abstract

The present invention relates to the technical field of safety devices, and in particular to a device for ensuring the safety of concentrated sulfuric acid unloading. A device for ensuring the safety of concentrated sulfuric acid unloading is provided, which can collect residual concentrated sulfuric acid. A device for ensuring the safety of concentrated sulfuric acid unloading comprises a discharge pipe, a sulfuric acid hose, a cart, rollers and a support seat. The front and rear sides of the bottom of the cart are both symmetrically connected to rollers in a rotatable manner. The upper right side of the cart is connected to the support seat, on which the sulfuric acid hose is placed. The left side of the sulfuric acid hose is clamped with the discharge pipe of the concentrated sulfuric acid storage tank. During the disassembly of the left side of the sulfuric acid hose from the discharge pipe, the residual liquid collection box can collect the residual concentrated sulfuric acid, thereby avoiding the waste of concentrated sulfuric acid and reducing economic losses. In addition, the alkaline solution in the residual liquid collection box can neutralize the concentrated sulfuric acid and reduce the acidity of the concentrated sulfuric acid.

Description

Technical Field

[0001] The invention relates to the technical field of safety devices, in particular to a device for ensuring the safety of concentrated sulfuric acid unloading. Background Art

[0002] In the chemical industry, concentrated sulfuric acid is often used in production, and the canned concentrated sulfuric acid needs to be unloaded. When unloading the canned concentrated sulfuric acid, it is usually necessary to use an unloading pump to extract the concentrated sulfuric acid in the concentrated sulfuric acid storage tank. First, connect the left side of the sulfuric acid hose to the discharge port on the concentrated sulfuric acid storage tank, and connect the right side of the sulfuric acid hose to the unloading pump inlet. Then open the discharge valve on the concentrated sulfuric acid storage tank and start the unloading pump to unload the concentrated sulfuric acid. Since concentrated sulfuric acid is corrosive, it is necessary to ensure the unloading safety of the concentrated sulfuric acid during the unloading process.

[0003] The patent with authorization announcement CN217323367U discloses a device for ensuring the safety of unloading concentrated sulfuric acid, including a first base, a first chute is opened on the right part of the upper end of the first base, a dilution mechanism is slidably installed on the first chute, a protective mechanism is fixedly installed on the upper end of the first base, and four movable wheels are fixedly installed on the lower end of the first base. When in use, first connect one end of the unloading hose to the hose connector and the other end to the detector, then start the air pump to unload the concentrated sulfuric acid, but the device of this patent cannot collect the residual concentrated sulfuric acid, resulting in a large loss of concentrated sulfuric acid, and the dripping concentrated sulfuric acid will corrode the equipment.

[0004] Therefore, a device for ensuring the safety of concentrated sulfuric acid unloading is now developed that can collect residual concentrated sulfuric acid. Summary of the Invention

[0005] In order to overcome the disadvantage that the residual concentrated sulfuric acid cannot be collected, resulting in a large loss of concentrated sulfuric acid, the present invention provides a device that can collect the residual concentrated sulfuric acid and ensure the safety of concentrated sulfuric acid unloading.

[0006] A device for ensuring the safety of concentrated sulfuric acid unloading includes a discharge pipe, a sulfuric acid hose, a cart, rollers and a support base. The front and rear sides of the bottom of the cart are both symmetrically and rotatably connected with rollers. The upper right side of the cart is connected to the support base, and the sulfuric acid hose is placed on the support base. The left side of the sulfuric acid hose is clamped with the discharge pipe of the concentrated sulfuric acid storage tank. The device also includes a lifting mechanism and a neutralization mechanism. The right side of the bottom wall of the cart is provided with a lifting mechanism for supporting the right part of the sulfuric acid hose. The left side of the bottom wall of the cart is provided with a neutralization mechanism for collecting residual concentrated sulfuric acid during the separation process of the discharge pipe and the sulfuric acid hose.

[0007] Optionally, the lifting mechanism includes a support plate, a toothed sliding frame, a motor, and a gear. A toothed sliding frame is slidably connected to the right side of the inner bottom of the trolley. A support plate is connected to the top of the toothed sliding frame. The support plate is a hollow structure. A motor is connected to the right side wall of the inner bottom of the trolley. The motor is located at the rear right of the toothed sliding frame. A gear is connected to the output shaft of the motor. The gear meshes with the teeth on the toothed sliding frame. The output shaft of the motor drives the gear to rotate, moving the toothed sliding frame and the support plate upward. The upward movement of the support plate supports the right part of the sulfuric acid hose.

[0008] Optionally, the neutralization mechanism includes an alkali solution tank, a residual liquid collection tank, an elastic base, a small handle, a long pull rope, a long suspension rod, a one-way valve, an alkali solution hose, an alkali solution valve, and a short suspension rod. A long suspension rod is connected to the middle of the upper part of the trolley. Short suspension rods are connected to the left side of the front inner wall and the left side of the rear inner wall of the trolley respectively. An elastic base is connected to the left side of the inner bottom wall of the trolley. A residual liquid collection tank is connected to the top of the elastic base. The residual liquid collection tank is located directly below the clamping connection between the discharge pipe and the sulfuric acid hose. Small handles are connected to both the front and rear sides of the residual liquid collection tank. An alkali solution tank is connected to the middle of the inner bottom wall of the trolley. Two alkali solution hoses are connected to the left side of the alkali solution tank. The two alkali solution hoses are symmetrically arranged front and rear. The left sides of the alkali solution hoses are respectively connected to the front and rear sides of the residual liquid collection tank. The alkali solution hoses are both connected to the alkali solution tank and are also both connected to the residual liquid collection tank. One-way valves are connected to the left parts of the alkali solution hoses. An alkali solution valve is slidably connected to the left part of the alkali solution tank. Long pull ropes are connected to both the front and rear sides of the top of the alkali solution valve. The long pull ropes pass through the long suspension rod and the short suspension rod respectively, and the left parts of the long pull ropes are wound around the small handles. The downward movement of the residual liquid collection tank drives the small handle downward, pulling the left part of the long pull rope downward, and the alkali solution valve moves upward to open. The alkali solution in the alkali solution tank flows into the residual liquid collection tank through the alkali solution hose to supplement the alkali solution in the residual liquid collection tank.

[0009] Optionally, a fixing mechanism for strengthening the connection between the discharge pipe and the sulfuric acid hose is further included. The fixing mechanism includes a slide rail, a linear spring, a sliding sleeve, a fixing frame, a moving frame, and a sliding rod. A slide rail is connected to the left side of the inner bottom wall of the trolley. Two sliding sleeves are slidably connected to the slide rail. The two sliding sleeves are symmetrically arranged front and rear. Linear springs are connected between the mutually remote sides of the sliding sleeves and the inner wall of the slide rail respectively. The linear springs are sleeved on the slide rail. Fixing frames are slidably connected inside the sliding sleeves respectively. Moving frames are connected to the mutually remote sides of the fixing frames respectively. Sliding rods are slidably connected to the right parts of the moving frames respectively. The mutually approaching sides of the sliding rods are both connected to the support plate.

[0010] Optionally, it further includes a waste liquid storage mechanism for leaving more space for collecting concentrated sulfuric acid. The waste liquid storage mechanism includes a waste liquid tank, fixed rods, steel ropes, baffles, and residual liquid hoses. The lower part of the trolley is slidably connected with a waste liquid tank. The front and rear sides of the lower left part of the residual liquid collection tank are both connected with residual liquid hoses. The lower parts of the residual liquid hoses both pass through the trolley and are communicated with the waste liquid tank, and the residual liquid hoses are also communicated with the residual liquid collection tank. The upper left sides of the front inner wall and the rear inner wall in the trolley are both connected with fixed rods. The lower parts of the fixed rods are both connected with steel ropes. The bottoms of the steel ropes are both connected with baffles for blocking the connection between the residual liquid hoses and the residual liquid collection tank. The baffles are both slidably connected with the residual liquid collection tank. When there is more liquid in the residual liquid collection tank, the residual liquid collection tank moves downward, and the baffles are separated from the connection between the residual liquid hoses and the residual liquid collection tank. The liquid in the residual liquid collection tank flows into the waste liquid tank through the residual liquid hoses.

[0011] Optionally, it further includes a reinforcement mechanism for reinforcing the sulfuric acid hose. The reinforcement mechanism includes arc-shaped reinforcement plates, buckles, arc-shaped rods, and arc-shaped springs. The left and right sides inside the support plate are both connected with arc-shaped rods. The arc-shaped reinforcement plates are both slidably connected to the arc-shaped rods. The arc-shaped reinforcement plates are both slidably connected to the support plate. Between the upper sides of the rear parts of the arc-shaped reinforcement plates and the inner walls of the support plate, arc-shaped springs are both connected. The arc-shaped springs are both sleeved on the upper rear parts of the arc-shaped rods. The upper left and right sides of the rear upper part of the support plate are both rotatably connected with buckles. The mutually approaching sides of the buckles are both located between the arc-shaped springs and the arc-shaped reinforcement plates. When the support plate is attached to the sulfuric acid hose, the sulfuric acid hose squeezes the buckles, the buckles rotate to loosen the arc-shaped springs, and the arc-shaped springs rebound to turn the arc-shaped reinforcement plates upward to wrap the right part of the sulfuric acid hose.

[0012] Optionally, it further includes a limiting mechanism for limiting the waste liquid tank. The limiting mechanism includes clamping plates and torsion springs. The left and right sides of the front lower part of the trolley are both rotatably connected with clamping plates. Torsion springs are both connected between the clamping plates and the trolley. The torsion springs are both sleeved on the front lower part of the trolley.

[0013] Optionally, it further includes a limiting fixed frame. The right side of the inner bottom wall of the trolley is connected with a limiting fixed frame. The limiting fixed frame is slidably connected with the toothed sliding frame.

[0014] The present invention has the following advantages:

[0015] 1. During the process of disassembling the sulfuric acid hose from the left side of the discharge pipe, the residual liquid collection tank can collect the residual concentrated sulfuric acid, so as to avoid waste of concentrated sulfuric acid, reduce economic losses, and the alkali liquid in the residual liquid collection tank can neutralize the concentrated sulfuric acid to reduce the acidity of the concentrated sulfuric acid.

[0016] 2. The present invention can use the fixed frame to strengthen the connection between the discharge pipe and the left side of the sulfuric acid hose, avoid the separation of the discharge pipe and the left side of the sulfuric acid hose, and improve the safety of unloading concentrated sulfuric acid from the vehicle.

[0017] 3. The liquid in the residual liquid collection box of the present invention can flow into the waste liquid box through the residual liquid hose, so that more space can be reserved for collecting concentrated sulfuric acid, which is beneficial to collecting more residual concentrated sulfuric acid. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0019] Figure 2 It is a sectional three-dimensional structure diagram of the present invention.

[0020] Figure 3 It is a three-dimensional structure diagram of the discharge pipe and sulfuric acid hose of the present invention.

[0021] Figure 4 It is a three-dimensional structure diagram of the lifting mechanism of the present invention.

[0022] Figure 5 It is a sectional view of the three-dimensional structure of the lifting mechanism of the present invention.

[0023] Figure 6 It is a three-dimensional structure diagram of the neutralization mechanism of the present invention.

[0024] Figure 7 It is a partial three-dimensional structure diagram of the neutralization mechanism of the present invention.

[0025] Figure 8 It is a three-dimensional structure diagram of the fixing mechanism of the present invention.

[0026] Figure 9 It is a three-dimensional structure diagram of the waste liquid storage mechanism of the present invention.

[0027] Figure 10 It is an enlarged three-dimensional structure diagram of point A of the present invention.

[0028] Figure 11 It is a three-dimensional structure diagram of the trolley and waste liquid box of the present invention.

[0029] Figure 12 It is a three-dimensional structure diagram of the reinforcement mechanism of the present invention.

[0030] Figure 13 It is a three-dimensional structure diagram of the limiting mechanism of the present invention.

[0031] The meanings of the reference numerals in the figure are: 1: discharge pipe, 2: sulfuric acid hose, 3: trolley, 31: roller, 32: support seat, 4: lifting mechanism, 41: support plate, 42: limit fixing frame, 43: toothed sliding frame, 44: motor, 45: gear, 5: neutralization mechanism, 51: alkali liquid tank, 52: residual liquid collection box, 53: elastic base, 54: small handle, 55: long pull rope, 56: long lifting rod, 57: one-way valve, 58: alkali liquid hose, 59: alkali liquid Valve, 510: short suspension rod, 6: fixing mechanism, 61: slide rail, 62: linear spring, 63: sliding sleeve, 64: fixed frame, 65: movable frame, 66: sliding rod, 7: waste liquid storage mechanism, 71: waste liquid tank, 72: fixing rod, 73: steel rope, 74: baffle, 75: residual liquid hose, 8: reinforcement mechanism, 81: arc reinforcement plate, 82: buckle, 83: arc rod, 84: arc spring, 9: limiting mechanism, 91: clamping plate, 92: torsion spring. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear herein are based solely on the accompanying drawings and are not intended to limit the present invention.

[0033] Example 1

[0034] A device to ensure the safety of concentrated sulfuric acid unloading, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes a discharge pipe 1, a sulfuric acid hose 2, a cart 3, rollers 31, a support seat 32, a lifting mechanism 4 and a neutralization mechanism 5. The front and rear sides of the bottom of the cart 3 are symmetrically connected to the rollers 31 for rotation. The upper right side of the cart 3 is fixedly connected to the support seat 32. The sulfuric acid hose 2 is placed on the support seat 32. The discharge pipe 1 is clamped on the left side of the sulfuric acid hose 2. The discharge pipe 1 is the discharge pipe 1 of the concentrated sulfuric acid storage tank. The lifting mechanism 4 is provided on the right side of the inner bottom wall of the cart 3, and the neutralization mechanism 5 is provided on the left side of the inner bottom wall of the cart 3.

[0035] like Figure 2 、 Figure 4 and Figure 5 As shown, the lifting mechanism 4 includes a support plate 41, a toothed sliding frame 43, a motor 44 and a gear 45. The toothed sliding frame 43 is slidably connected to the right side of the bottom of the cart 3. The top of the toothed sliding frame 43 is connected to the support plate 41. The support plate 41 is in contact with the right part of the sulfuric acid hose 2. The support plate 41 is a hollow structure. The right side of the bottom wall of the cart 3 is connected to the motor 44. The motor 44 is located to the right rear of the toothed sliding frame 43. The output shaft of the motor 44 is connected to a gear 45, and the gear 45 is engaged with the teeth on the toothed sliding frame 43.

[0036] As Figure 4 and Figure 5 shown, it further includes a limit fixing bracket 42. The right side of the inner bottom wall of the trolley 3 is connected with the limit fixing bracket 42. The limit fixing bracket 42 is slidably connected with the toothed sliding bracket 43. The limit fixing bracket 42 can improve the stability of the toothed sliding bracket 43.

[0037] As Figure 2 , Figure 6 and Figure 7 shown, the neutralization mechanism 5 includes an alkali solution tank 51, a residual liquid collection tank 52, an elastic base 53, a small handle 54, a long pull rope 55, a long hanging rod 56, a one-way valve 57, an alkali solution hose 58, an alkali solution valve 59 and a short hanging rod 510. The middle of the upper part of the trolley 3 is connected with the long hanging rod 56. The left side of the inner front wall of the trolley 3 and the left side of the inner rear wall of the trolley 3 are both connected with the short hanging rod 510. The left side of the inner bottom wall of the trolley 3 is connected with the elastic base 53. The residual liquid collection tank 52 is connected to the top of the elastic base 53. The residual liquid collection tank 52 is located directly below the clamping connection of the discharge pipe 1 and the sulfuric acid hose 2. The residual liquid collection tank 52 can collect the residual sulfuric acid. Small handles 54 are connected to both the front and rear sides of the residual liquid collection tank 52. The middle of the inner bottom wall of the trolley 3 is connected with the alkali solution tank 51. Two alkali solution hoses 58 are connected to the left side of the alkali solution tank 51. The two alkali solution hoses 58 are symmetrically arranged front and rear. The left sides of the alkali solution hoses 58 are respectively connected to the front and rear sides of the residual liquid collection tank 52. The alkali solution hoses 58 are both communicated with the alkali solution tank 51 and are also both communicated with the residual liquid collection tank 52. One-way valves 57 are connected to the left parts of the alkali solution hoses 58. The one-way valves 57 can prevent the liquid in the alkali solution hoses 58 from flowing back into the alkali solution tank 51. The alkali solution valve 59 is slidably connected to the left part of the alkali solution tank 51. Long pull ropes 55 are connected to both the front and rear sides of the top of the alkali solution valve 59. The long pull ropes 55 pass through the long hanging rod 56 and the short hanging rod 510, and the left parts of the long pull ropes 55 are wound around the small handles 54.

[0038] During the process of unloading concentrated sulfuric acid, when it is necessary to ensure the safety of unloading concentrated sulfuric acid, this device can be used for operation. First, fill the alkali solution tank 51 with alkali solution, then pour a small amount of alkali solution into the residual liquid collection tank 52. Subsequently, connect the right side of the sulfuric acid hose 2 to the inlet of the unloading pump. Since the discharge pipe 1 on the concentrated sulfuric acid storage tank has been clamped to the left side of the sulfuric acid hose 2, then open the feed valve and start the unloading pump. After that, the concentrated sulfuric acid in the concentrated sulfuric acid storage tank will flow into the unloading pump through the sulfuric acid hose 2, and thus the concentrated sulfuric acid can be unloaded. Due to the different heights of the inlet of the unloading pump, the height of the sulfuric acid hose 2 will also change with the height of the inlet of the unloading pump. Subsequently, control the positive and reverse rotation of the output shaft of the motor 44, and then drive the gear 45 to rotate forward and backward, so that the toothed sliding frame 43 and the support plate 41 move up and down, and then the support plate 41 fits with the sulfuric acid hose 2, so as to support the sulfuric acid hose 2, prevent the sulfuric acid hose 2 from collapsing downward, reduce the loss of the sulfuric acid hose 2, and at the same time can also prevent the right side of the sulfuric acid hose 2 from separating from the inlet of the unloading pump, strengthening the safety of unloading concentrated sulfuric acid. When the unloading of concentrated sulfuric acid is completed, close the feed valve and the unloading pump, then separate the right side of the sulfuric acid hose 2 from the inlet of the unloading pump, and separate the left side of the sulfuric acid hose 2 from the discharge pipe 1. During the process of separating the left side of the sulfuric acid hose 2 from the discharge pipe 1, the residual concentrated sulfuric acid between the sulfuric acid hose 2 and the discharge pipe 1 will drip into the lower residual liquid collection tank 52, so as to collect the residual concentrated sulfuric acid, and the alkali solution in the residual liquid collection tank 52 will neutralize the concentrated sulfuric acid, reducing the acidity of the concentrated sulfuric acid, thereby reducing the harm caused by the concentrated sulfuric acid. Subsequently, remove the sulfuric acid hose 2. After unloading concentrated sulfuric acid multiple times, more concentrated sulfuric acid will be collected in the residual liquid collection tank 52. Under the gravity of the concentrated sulfuric acid, the residual liquid collection tank 52 will drive the small handle 54 and the one-way valve 57 to move downward, the alkali solution hose 58 will undergo adaptive deformation, and then the elastic base 53 will be compressed. At the same time, when the small handle 54 moves downward, it will pull the left side of the long pull rope 55 downward, and then under the guiding action of the long suspension rod 56 and the short suspension rod 510, the long pull rope 55 will pull the alkali solution valve 59 upward, and the alkali solution tank 51 will be opened. At this time, the alkali solution in the alkali solution tank 51 will flow into the residual liquid collection tank 52 through the alkali solution hose 58, so as to provide sufficient alkali solution to fully neutralize the concentrated sulfuric acid in the collection tank. When the residual liquid collection tank 52 is full of liquid, use tools to pump out the liquid in the residual liquid collection tank 52. After that, under the action of the elastic base 53, the residual liquid collection tank 52 will drive the small handle 54 and the one-way valve 57 to move upward and reset, so that the long pull rope 55 is released. Under the gravity of the alkali solution valve 59, the alkali solution valve 59 will move downward to close the alkali solution tank 51. Repeating the above operations can ensure the safety of unloading concentrated sulfuric acid during the process of unloading concentrated sulfuric acid, and when the left side of the sulfuric acid hose 2 is separated from the discharge pipe 1, the residual liquid collection tank 52 can collect the residual concentrated sulfuric acid, so as to avoid waste of concentrated sulfuric acid and reduce economic losses.

[0039] Example 2

[0040] Based on Example 1, as Figure 2 and Figure 8 shown, it further includes a fixing mechanism 6. The fixing mechanism 6 includes a slide rail 61, a linear spring 62, a sliding sleeve 63, a fixing frame 64, a moving frame 65 and a slide bar 66. The slide rail 61 is welded to the left inner bottom wall of the trolley 3. The number of the sliding sleeves 63 is two, and both sliding sleeves 63 are slidably connected to the slide rail 61. The two sliding sleeves 63 are symmetrically arranged front and back. Linear springs 62 are connected between the mutually remote sides of the sliding sleeves 63 and the inner walls of the slide rail 61, and the linear springs 62 are all sleeved on the slide rail 61. The number of the fixing frames 64 is two, and both fixing frames 64 are slidably connected inside the sliding sleeves 63. The fixing frames 64 can reinforce the interface between the discharge pipe 1 and the sulfuric acid hose 2. Moving frames 65 are connected to the mutually remote sides of the fixing frames 64. Slide bars 66 are slidably connected to the right parts of the moving frames 65. The mutually close sides of the slide bars 66 are all connected to the support plate 41.

[0041] When it is necessary to reinforce the connection between the discharge pipe 1 and the sulfuric acid hose 2, the fixing mechanism 6 can be used for operation. During the process of unloading concentrated sulfuric acid from the vehicle, the fixing frames 64 will reinforce the connection between the discharge pipe 1 and the sulfuric acid hose 2 to prevent the discharge pipe 1 and the sulfuric acid hose 2 from separating. Moreover, the up and down movement of the support plate 41 can drive the slide bars 66, the moving frames 65 and the fixing frames 64 to move up and down. In this way, the fixing frames 64 can always clamp the connection between the discharge pipe 1 and the sulfuric acid hose 2. After the unloading of concentrated sulfuric acid from the vehicle is completed, move the fixing frames 64, the sliding sleeves 63 and the moving frames 65 to the mutually remote sides, and then the linear springs 62 will be compressed. Subsequently, the discharge pipe 1 and the sulfuric acid hose 2 can be separated. Then release the fixing frames 64. Under the elastic force of the linear springs 62, the sliding sleeves 63, the fixing frames 64 and the moving frames 65 will move and reset to the mutually close sides. Repeating the above operations can strengthen the connection between the discharge pipe 1 and the sulfuric acid hose 2, avoid the separation of the discharge pipe 1 and the sulfuric acid hose 2, and thus improve the safety of unloading concentrated sulfuric acid from the vehicle.

[0042] As Figure 2 、 Figure 9 、 Figure 10 and Figure 11As shown in the figure, it further includes a waste liquid storage mechanism 7. The waste liquid storage mechanism 7 includes a waste liquid tank 71, a fixing rod 72, a steel cable 73, a baffle 74, and a residual liquid hose 75. The lower part of the trolley 3 is slidably connected with the waste liquid tank 71. Both the front and rear sides of the lower left part of the residual liquid collection box 52 are fixedly connected with the residual liquid hoses 75. The lower parts of the residual liquid hoses 75 all pass through the trolley 3 and are communicated with the waste liquid tank 71, and the residual liquid hoses 75 are also communicated with the residual liquid collection box 52. The upper left side of the front inner wall and the upper left side of the rear inner wall in the trolley 3 are both connected with the fixing rod 72. The lower parts of the fixing rods 72 are both connected with the steel cables 73. The bottoms of the steel cables 73 are both connected with the baffle 74. The baffle 74 is slidably connected with the residual liquid collection box 52. The baffle 74 can close the communicating part between the residual liquid hose 75 and the residual liquid collection box 52.

[0043] When the residual liquid collection box 52 moves downward, the residual liquid hose 75 undergoes adaptive deformation. At this time, the communicating part between the residual liquid hose 75 and the residual liquid collection box 52 is separated from the baffle 74, and the residual liquid hose 75 is communicated with the residual liquid collection box 52. The liquid in the residual liquid collection box 52 will flow into the waste liquid tank 71 through the residual liquid hose 75. In this way, the residual liquid collection box 52 can leave more space for collecting concentrated sulfuric acid. After the liquid in the residual liquid collection box 52 flows into the waste liquid tank 71, the elastic force of the elastic base 53 causes the residual liquid collection box 52 to move upward, so that the baffle 74 blocks the communicating part between the residual liquid hose 75 and the residual liquid collection box 52. After all the concentrated sulfuric acid is unloaded from the vehicle, the waste liquid tank 71 is pulled forward, and then the liquid in the waste liquid tank 71 is processed. After the liquid in the waste liquid tank 71 is processed, the waste liquid tank 71 is moved backward to reset. Repeating the above operations can leave more space for collecting concentrated sulfuric acid, which is beneficial to collecting more residual concentrated sulfuric acid.

[0044] As Figure 2 and Figure 12 shown in the figure, it further includes a reinforcement mechanism 8. The reinforcement mechanism 8 includes an arc-shaped reinforcement plate 81, a buckle 82, an arc-shaped rod 83, and an arc-shaped spring 84. Both the left and right sides inside the support plate 41 are connected with the arc-shaped rods 83. The arc-shaped reinforcement plates 81 are slidably connected to the arc-shaped rods 83. The arc-shaped reinforcement plates 81 are slidably connected to the support plate 41. Between the upper side of the rear part of the arc-shaped reinforcement plate 81 and the inner wall of the support plate 41, there are connected arc-shaped springs 84. The arc-shaped springs 84 are all sleeved on the upper rear parts of the arc-shaped rods 83. The upper rear parts of the left and right sides of the support plate 41 are rotatably connected with the buckles 82. The mutually approaching sides of the buckles 82 are both located between the arc-shaped spring 84 and the arc-shaped reinforcement plate 81. The buckles 82 can limit the arc-shaped spring 84.

[0045] When it is necessary to improve the stability of the sulfuric acid hose 2, the reinforcement mechanism 8 can be used to reinforce the sulfuric acid hose 2. Initially, the buckle 82 holds the arc spring 84, and the arc spring 84 is in a compressed state. When the support plate 41 is in contact with the sulfuric acid hose 2, the sulfuric acid hose 2 will squeeze the buckle 82, causing the buckle 82 to rotate and separate from the arc spring 84. Under the elastic force of the arc spring 84, the arc reinforcement plate 81 will rotate upward along the arc rod 83, so that the upper right part of the sulfuric acid hose 2 is wrapped, thus reinforcing the sulfuric acid hose 2. After the sulfuric acid unloading is completed, rotate the arc reinforcement plate 81 downward to reset it, and then the arc spring 84 is compressed. After the sulfuric acid hose 2 is separated from the support plate 41, reverse the buckle 82 to reset it. At this time, the buckle 82 will limit the arc spring 84. Repeating the above operations can use the arc reinforcement plate 81 to reinforce the sulfuric acid hose 2 and improve the stability of the sulfuric acid hose 2.

[0046] As Figure 2 and Figure 13 shown, it further includes a limiting mechanism 9. The limiting mechanism 9 includes a clamping plate 91 and a torsion spring 92. The number of clamping plates 91 is two, and the two clamping plates 91 are both rotatably connected to the left and right sides of the front lower part of the trolley 3. The clamping plate 91 can limit the waste liquid tank 71. Torsion springs 92 are connected between the clamping plate 91 and the trolley 3, and the torsion springs 92 are all sleeved on the front lower part of the trolley 3.

[0047] When it is necessary to limit the waste liquid tank 71, the limiting mechanism 9 can be used to limit the waste liquid tank 71. During the unloading process, the clamping plate 91 will resist the waste liquid tank 71 to prevent the waste liquid tank 71 from sliding forward, thereby preventing the liquid in the waste liquid tank 71 from flowing out. When people need to pull the waste liquid tank 71 forward, rotate the clamping plate 91 by ninety degrees so that the clamping plate 91 is separated from the waste liquid tank 71, and then the torsion spring 92 is twisted. Then the waste liquid tank 71 can be pulled forward. After the waste liquid tank 71 moves backward and resets, release the clamping plate 91. Under the action of the torsion spring 92, the clamping plate 91 will reverse ninety degrees to reset and continue to limit the waste liquid tank 71. In summary, during the concentrated sulfuric acid unloading process, the clamping plate 91 can be used to limit the waste liquid tank 71, prevent the waste liquid tank 71 from sliding forward, and improve the stability of the waste liquid tank 71.

[0048] It should be understood that this embodiment is only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A device for ensuring the safety of unloading concentrated sulfuric acid, comprising a discharge pipe (1), a sulfuric acid hose (2), a trolley (3), rollers (31) and a support seat (32). The front and rear sides of the bottom of the trolley (3) are symmetrically and rotatably connected to the rollers (31) on the left and right. A support seat (32) is connected to the upper side of the right part of the trolley (3). The sulfuric acid hose (2) is placed on the support seat (32). The left part of the sulfuric acid hose (2) is clamped with the discharge pipe (1) of the concentrated sulfuric acid storage tank. It is characterized in that, It also includes a lifting mechanism (4) and a neutralizing mechanism (5). On the right side of the inner bottom wall of the trolley (3), there is a lifting mechanism (4) for supporting the right part of the sulfuric acid hose (2). On the left side of the inner bottom wall of the trolley (3), there is a neutralizing mechanism (5) for collecting residual concentrated sulfuric acid during the separation process of the discharge pipe (1) and the sulfuric acid hose (2). The neutralizing mechanism (5) includes an alkali solution tank (51), a residual liquid collection tank (52), an elastic base (53), a small handle (54), a long pull rope (55), a long hanging rod (56), a one-way valve (57), an alkali solution hose (58), an alkali solution valve (59), and a short hanging rod (510). In the middle of the upper part of the trolley (3), there is a long hanging rod (56) connected. On the left side of the inner front wall of the trolley (3) and the left side of the inner rear wall of the trolley (3), there are short hanging rods (510) connected. On the left side of the inner bottom wall of the trolley (3), there is an elastic base (53) connected. At the top of the elastic base (53), there is a residual liquid collection tank (52) connected. The residual liquid collection tank (52) is located directly below the clamping position of the discharge pipe (1) and the sulfuric acid hose (2). On both the front and rear sides of the residual liquid collection tank (52), there are small handles (54) connected. In the middle of the inner bottom wall of the trolley (3), there is an alkali solution tank (51) connected. On the left side of the alkali solution tank (51), there are two alkali solution hoses (58) connected. The two alkali solution hoses (58) are symmetrically arranged front and back. The left sides of the alkali solution hoses (58) are respectively connected to the front and rear sides of the residual liquid collection tank (52). The alkali solution hoses (58) are both connected to the alkali solution tank (51) and are also connected to the residual liquid collection tank (52). On the left parts of the alkali solution hoses (58), there are one-way valves (57) connected. On the left part of the alkali solution tank (51), there is an alkali solution valve (59) connected in a sliding manner. On both the front and rear sides of the top of the alkali solution valve (59), there are long pull ropes (55) connected. The long pull ropes (55) both pass through the long hanging rod (56) and the short hanging rod (510), and the left parts of the long pull ropes (55) are both wound around the small handles (54). When the residual liquid collection tank (52) drives the small handle (54) to move downward, the left part of the long pull rope (55) is pulled downward, and the alkali solution valve (59) moves upward to open. The alkali solution in the alkali solution tank (51) flows into the residual liquid collection tank (52) through the alkali solution hose (58) to supplement the alkali solution in the residual liquid collection tank (52).

2. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 1, characterized in that, The lifting mechanism (4) includes a support plate (41), a toothed sliding frame (43), a motor (44), and a gear (45). On the right side of the inner bottom of the trolley (3), there is a toothed sliding frame (43) connected in a sliding manner. At the top of the toothed sliding frame (43), there is a support plate (41) connected. The support plate (41) is a hollow structure. On the right side of the inner bottom wall of the trolley (3), there is a motor (44) connected. The motor (44) is located behind the right of the toothed sliding frame (43). On the output shaft of the motor (44), there is a gear (45) connected. The gear (45) meshes with the teeth on the toothed sliding frame (43). The output shaft of the motor (44) drives the gear (45) to rotate, moving the toothed sliding frame (43) and the support plate (41) upward. The support plate (41) moves upward to support the right part of the sulfuric acid hose (2).

3. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 2, characterized in that, It further includes a fixing mechanism (6) for strengthening the connection between the discharge pipe (1) and the sulfuric acid hose (2). The fixing mechanism (6) includes a slide rail (61), a linear spring (62), a sliding sleeve (63), a fixing frame (64), a moving frame (65) and a slide bar (66). The left side of the inner bottom wall of the trolley (3) is connected with a slide rail (61). Two sliding sleeves (63) are slidably connected to the slide rail (61). The two sliding sleeves (63) are arranged symmetrically in the front and back. Linear springs (62) are connected between the mutually remote sides of the sliding sleeves (63) and the inner wall of the slide rail (61). The linear springs (62) are all sleeved on the slide rail (61). Fixing frames (64) are slidably connected inside the sliding sleeves (63). Moving frames (65) are connected to the mutually remote sides of the fixing frames (64). Slide bars (66) are slidably connected to the right parts of the moving frames (65). The mutually close sides of the slide bars (66) are all connected to the support plate (41).

4. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 3, wherein It further includes a waste liquid storage mechanism (7) for leaving more space for collecting concentrated sulfuric acid. The waste liquid storage mechanism (7) includes a waste liquid tank (71), a fixing rod (72), a steel wire rope (73), a baffle plate (74) and a residual liquid hose (75). The waste liquid tank (71) is slidably connected to the lower part of the trolley (3). Residual liquid hoses (75) are connected to the front and back sides of the lower left part of the residual liquid collection box (52). The lower parts of the residual liquid hoses (75) all pass through the trolley (3) and are communicated with the waste liquid tank (71), and the residual liquid hoses (75) are all communicated with the residual liquid collection box (52). Fixing rods (72) are connected to the upper left side of the inner front wall and the upper left side of the inner rear wall of the trolley (3). Steel wire ropes (73) are connected to the lower parts of the fixing rods (72). Baffle plates (74) for blocking the communication between the residual liquid hose (75) and the residual liquid collection box (52) are connected to the bottoms of the steel wire ropes (73). The baffle plates (74) are all slidably connected to the residual liquid collection box (52). When there is more liquid in the residual liquid collection box (52) and the residual liquid collection box (52) moves downward, the baffle plates (74) are separated from the communication between the residual liquid hoses (75) and the residual liquid collection box (52), and the liquid in the residual liquid collection box (52) flows into the waste liquid tank (71) through the residual liquid hoses (75).

5. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 4, characterized in that, It further includes a reinforcement mechanism (8) for reinforcing the sulfuric acid hose (2). The reinforcement mechanism (8) includes an arc-shaped reinforcement plate (81), a buckle (82), an arc-shaped rod (83), and an arc-shaped spring (84). Arc-shaped rods (83) are connected to both the left and right sides inside the support plate (41). Arc-shaped reinforcement plates (81) are slidably connected to the arc-shaped rods (83). The arc-shaped reinforcement plates (81) are also slidably connected to the support plate (41). Arc-shaped springs (84) are connected between the upper sides of the rear parts of the arc-shaped reinforcement plates (81) and the inner walls of the support plate (41). The arc-shaped springs (84) are sleeved on the upper rear parts of the arc-shaped rods (83). Buckles (82) are rotatably connected to both the left and right sides of the upper rear part of the support plate (41). The mutually approaching sides of the buckles (82) are located between the arc-shaped springs (84) and the arc-shaped reinforcement plates (81). When the support plate (41) is in contact with the sulfuric acid hose (2), the sulfuric acid hose (2) squeezes the buckles (82), causing the buckles (82) to rotate and release the arc-shaped springs (84). The arc-shaped springs (84) rebound to rotate the arc-shaped reinforcement plates (81) upward to wrap the right part of the sulfuric acid hose (2).

6. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 5, characterized in that, It further includes a limiting mechanism (9) for limiting the waste liquid tank (71). The limiting mechanism (9) includes a clamping plate (91) and a torsion spring (92). Clamping plates (91) are rotatably connected to both the left and right sides of the lower front part of the trolley (3). Torsion springs (92) are connected between the clamping plates (91) and the trolley (3). The torsion springs (92) are sleeved on the lower front part of the trolley (3).

7. The device for ensuring the safety of concentrated sulfuric acid unloading according to claim 6, characterized in that, It further includes a limiting and fixing frame (42). The limiting and fixing frame (42) is connected to the right side of the inner bottom wall of the trolley (3). The limiting and fixing frame (42) is slidably connected to the toothed sliding frame (43).

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