Leakage-proof chemical storage tank

Abstract

The invention belongs to the field of chemical storage tanks, and particularly relates to a leakage-proof chemical storage tank which comprises an inner tank and an outer tank, a cover plate is rotatably connected to the top end of the outer tank, a circular groove is formed in the bottom end of the inner tank, a jacking seat is clamped in the circular groove, a clamping mechanism is arranged in the outer tank, and the jacking seat is clamped in the clamping mechanism. The clamping mechanism is used for clamping and fixing the bottom end of the inner tank, and the inner wall of the outer tank is rotationally connected with the driving gear; through the structural design of a clamping mechanism, when chemical raw materials stored in an inner tank are reduced to a certain weight, under the action of a supporting spring, a jacking seat can push the inner tank upwards, a connecting rod can be driven to move in the upward moving process of the jacking seat, a second rack is meshed with a driving gear to drive a first rack to move reversely, and the inner tank is clamped in the first rack; therefore, the clamping blocks fixed on the clamping plates are not inserted into the clamping grooves any more, clamping and fixing of the clamping plates on the inner tank are relieved, and the inner tank can be taken out of the outer tank conveniently.

Description

Technical Field

[0001] The invention relates to the field of chemical storage tanks, in particular to a leakproof chemical storage tank. Background Art

[0002] Chemical storage tanks are important basic equipment in the chemical industry, mainly used to store various chemical raw materials. Since the stored chemical raw materials are often corrosive, there will be a corrosion-resistant lining layer on the inner wall of the storage tank to protect the tank body and prevent the chemical raw materials from penetrating.

[0003] According to the patent document: CN202010561390.5, a double-layer tank wall anti-leakage storage tank is proposed, wherein the double-layer tank wall anti-leakage storage tank includes an inner tank wall and an outer tank wall sleeved on the inner tank wall, an annular space is formed between the outer tank wall and the inner tank wall, and an overflow hole is provided on the inner tank wall. Through the above technical scheme, the structural form of the double-layer tank wall avoids the flammable liquid overflowing from the rupture of the inner tank and flows out of the tank, and controls the leakage caused by the rupture of the tank body within the double-layer tank wall anti-leakage storage tank; replaces the liquid storage function of the firebreak, thereby canceling the setting of the firebreak, further reducing the footprint, and optimizing the plane layout.

[0004] However, in the double-layer tank wall leak-proof storage tank in the above technology, since the bottom ends of the outer tank wall and the inner tank wall are connected to the bottom plate, when the outer side of the inner tank is damaged, it is difficult to repair it on the outer side of the inner tank due to the distance between the outer tank and the inner tank. The damaged position can only be repaired at the inner tank wall, which makes the repair effect relatively limited. Therefore, a leak-proof chemical storage tank is proposed to address the above problem. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, a double-layer tank wall leak-proof storage tank in the above technology has a problem that since the bottom ends of the outer tank wall and the inner tank wall are connected to the bottom plate, when the outer side of the inner tank is damaged, it is difficult to repair it on the outer side of the inner tank due to the distance between the outer tank and the inner tank. The damaged position can only be repaired at the inner tank wall, which makes the repair effect relatively limited. The present invention proposes a leak-proof chemical storage tank.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the leak-proof chemical storage tank described in the present invention comprises an inner tank and an outer tank, the top end of the outer tank is rotatably connected with a cover plate, the bottom end of the inner tank is provided with a circular groove, the inside of the circular groove is provided with a lifting seat, the inside of the outer tank is provided with a clamping mechanism, the clamping mechanism is used to clamp and fix the bottom end of the inner tank, the inner wall of the outer tank is rotatably connected with a driving gear, the top end of the driving gear is fixedly connected with a long rod, the long rod is provided with a pushing mechanism, the pushing mechanism is used to push the connecting gear to engage with the long rack, and an anti-falling mechanism is provided on one side of the connecting gear, the anti-falling mechanism is used to prevent the inner tank from suddenly falling during the rising process.

[0007] Preferably, the clamping mechanism includes multiple groups of blocks, and the multiple groups of blocks are fixedly connected to the clamping plate, the blocks are arranged inside the slot, and the slot is opened on the outside of the inner tank, the bottom end of the clamping plate is fixedly connected to the first rack, the bottom end of the first rack is slidably connected to the sliding bottom plate, the sliding bottom plate is fixedly connected to the inner wall of the outer tank, the first rack is meshed with the driving gear, the side of the driving gear away from the first rack is meshed with the second rack, the second rack is fixedly connected to one side of the pulley, the top end of the pulley is rotatably connected to the connecting rod, the side of the connecting rod away from the pulley is rotatably connected to the lifting seat, the bottom end of the lifting seat is hollowed out, the bottom end of the lifting seat is fixedly connected to a supporting spring, the bottom end of the supporting spring is fixedly connected to the inner wall of the outer tank, and four groups of connecting rods are provided.

[0008] Preferably, the pushing mechanism comprises a top block, the top of the top block contacts the abutment block, the top block and the abutment block are both trapezoidal in design, the bottom end of the top block is fixedly connected with a first spring and a top rod, the first spring is sleeved on the outer side of the top rod, the bottom end of the first spring is fixedly connected with a fixing plate, the bottom end of the fixing plate is rotatably connected with the top end of the long rod, the top of the long rod is provided with a thread, the long rod is threadedly connected with the sleeve, the top end of the sleeve contacts with the bottom end of the top rod, the abutment block is fixedly connected with two groups of push rods, the top end of the push rod contacts both sides of the connecting gear, the side of the push rod away from the connecting gear is fixedly connected with a second spring and a plug rod, the plug rod is inserted on the protrusion, the protrusion is fixedly connected with the fixing seat, the fixing plate and the fixing seat are both fixedly connected with the inner wall of the outer tank, the two sides of the connecting gear are slidably connected in the through groove, the through groove is provided on the fixing seat, the outer side of the inner tank is provided with four groups of mounting grooves, and the inner wall of the mounting groove is fixedly connected with a long rack.

[0009] Preferably, the anti-fall mechanism includes a ratchet, which is fixedly connected to one side of the connecting gear, and a pawl is rotatably connected to the side of the fixed seat close to the ratchet, the bottom end of the pawl contacts the convex plate, the top end of the pawl is fixedly connected to a connecting spring, the top end of the connecting spring is fixedly connected to a fixed block, and the fixed block and the convex plate are both fixedly connected to the fixed seat.

[0010] Preferably, the bottom end of the lifting seat contacts the support ring, the bottom end of the support ring is fixedly connected to the inner wall of the outer tank, the top end of the support ring is fixedly connected with four groups of positioning columns, the positioning columns are inserted into the inside of the positioning holes, and the positioning holes are opened at the bottom end of the lifting seat.

[0011] Preferably, the bottom end of the inner tank is in contact with a plurality of groups of support blocks, and the support blocks are fixedly connected to the inner wall of the outer tank.

[0012] Preferably, four groups of long plates are fixedly connected to the inner wall of the inner tank, and the long plates are arc-shaped.

[0013] Preferably, three sets of fixing rings are sleeved on the long rod, and the fixing rings are fixedly connected to the inner wall of the outer tank.

[0014] Preferably, a plurality of groups of small holes are formed at the bottom end of the outer tank, and the plurality of groups of small holes are distributed in a circumferential manner on the outer tank.

[0015] Preferably, a handle is fixedly connected to the top end of the cover plate, and a rubber pad is fixedly connected to the bottom end of the handle.

[0016] The present invention is beneficial in that: 1. The present invention adopts the structural design of the clamping mechanism. When the chemical raw materials stored in the inner tank are reduced to a certain weight, the lifting seat will push the inner tank upward under the action of the supporting spring, and in the process of the lifting seat moving upward, it will drive the connecting rod to move, and the second rack drives the first rack to move in the opposite direction by meshing with the driving gear, so that the clamping block fixed on the clamping plate is no longer inserted in the clamping groove, thereby releasing the clamping and fixing of the inner tank by the clamping plate, so that the inner tank can be taken out of the outer tank, so as to repair the damaged position on the outer side of the inner tank. In the above-mentioned technology, a double-layer tank wall anti-leakage storage tank, since the bottom ends of the outer tank wall and the inner tank wall are connected to the bottom plate, when the outer side of the inner tank is damaged, it is difficult to repair it on the outer side of the inner tank due to the distance between the outer tank and the inner tank, and the damaged position can only be repaired at the inner tank wall, so that the repair effect is relatively limited; 2. The present invention adopts the structural design of the pushing mechanism. When the second rack drives the driving gear to rotate, the driving gear will synchronously drive the long rod to rotate, and the sleeve threadedly connected to the top of the long rod will move upward and push the push rod. The top block fixed on the top of the push rod will push the abutment block, and the abutment block will push the push rod to move. The push rod then pushes the connecting gear to move until the connecting gear is meshed with the long rack. At this time, the inner tank can be smoothly pulled upward to ensure that the inner tank will not be offset during the pulling process. 3. The present invention adopts the structural design of the anti-fall mechanism. When the inner tank is pulled upward, the long rack will drive the connecting gear to rotate, and the ratchet connected to the connecting gear will rotate synchronously. The design of the pawl ensures that the connecting gear can only rotate in a single direction to prevent the inner tank from falling suddenly and causing the bottom end of the inner tank to collide with the inner wall of the outer tank. At the same time, it is also convenient to fix the inner tank at a certain height when pulling the inner tank, so as to repair the outer side of the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic structural diagram of a cross section of the present invention; Figure 3 It is a structural schematic diagram of the bottom end of the inner tank of the present invention; Figure 4 It is a structural schematic diagram of the top end of the inner tank of the present invention; Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 6 It is a structural schematic diagram of the jacking seat of the present invention; Figure 7 It is a structural schematic diagram of the support block of the present invention; Figure 8 It is a schematic diagram of the connection structure of the driving gear of the present invention; Fig. 9 It is a structural schematic diagram of the driving mechanism of the present invention; Fig.10 It is a structural schematic diagram of the anti-falling mechanism of the present invention.

[0019] In the figure: 1, inner tank; 20, outer tank; 21, cover plate; 22, round groove; 23, clamping groove; 24, clamping block; 25, clamping plate; 26, first rack; 28, sliding bottom plate; 30, driving gear; 31, second rack; 32, pulley; 33, connecting rod; 34, lifting seat; 35, long rod; 36, mounting groove; 37, long rack; 39, sleeve; 40, ejector rod; 41, fixing plate; 42, first spring; 43, ejector block; 44 , abutment block; 45, fixed seat; 46, connecting gear; 47, push rod; 48, second spring; 49, protrusion; 50, insertion rod; 51, through groove; 52, fixing block; 53, connecting spring; 54, pawl; 55, ratchet; 56, convex plate; 57, support block; 58, positioning hole; 59, positioning column; 60, support ring; 61, fixing ring; 62, long board; 63, handle; 64, support spring; 65, small hole; 66, rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 - Fig.10 As shown, a leakproof chemical storage tank comprises an inner tank 1 and an outer tank 20, the top of the outer tank 20 is rotatably connected with a cover plate 21, the bottom end of the inner tank 1 is provided with a circular groove 22, the inner part of the circular groove 22 is provided with a lifting seat 34, the size of the lifting seat 34 is adapted to the circular groove 22, a clamping mechanism is provided inside the outer tank 20, the clamping mechanism is used to clamp and fix the bottom end of the inner tank 1, the inner wall of the outer tank 20 is rotatably connected with a driving gear 30, a long rod 35 is welded and fixed at the top of the driving gear 30, a pushing mechanism is provided on the long rod 35, the pushing mechanism is used to push the connecting gear 46 to mesh with the long rack 37, and an anti-falling mechanism is provided on one side of the connecting gear 46, the anti-falling mechanism is used to prevent the inner tank 1 from suddenly falling during the rising process; The clamping mechanism includes multiple groups of card blocks 24, which are welded and fixed on the clamping plate 25. The card blocks 24 are rectangular in design and the spacing between two adjacent groups of card blocks 24 is the same. The card blocks 24 are clamped inside the card slot 23, and the card slot 23 is opened on the outside of the inner tank 1. The bottom end of the clamping plate 25 is fixed to the first rack 26 by welding. The bottom end of the first rack 26 is slidably connected to the sliding bottom plate 28. The sliding bottom plate 28 is welded and fixed to the inner wall of the outer tank 20. The first rack 26 is meshed with the driving gear 30, and the driving gear 30 is engaged with the driving gear 30. The side away from the first rack 26 is meshed with the second rack 31, the second rack 31 is welded and fixed to one side of the pulley 32, the bottom end of the pulley 32 is kept in contact with the inner wall of the outer tank 20, the top end of the pulley 32 is rotatably connected with the connecting rod 33, the side of the connecting rod 33 away from the pulley 32 is rotatably connected with the lifting seat 34, the bottom end of the lifting seat 34 is hollowed out, a support spring 64 is welded and fixed to the bottom end of the lifting seat 34, the bottom end of the support spring 64 is welded and fixed to the inner wall of the outer tank 20, and four groups of connecting rods 33 are provided; The pushing mechanism includes a top block 43, the top of which is in contact with an abutment block 44, and both the top block 43 and the abutment block 44 are of trapezoidal design. A first spring 42 and a top rod 40 are welded and fixed to the bottom end of the top block 43, the first spring 42 is sleeved on the outside of the top rod 40, the bottom end of the first spring 42 is welded and fixed to a fixing plate 41, the bottom end of the top rod 40 is partially connected to the fixing plate 41, the bottom end of the fixing plate 41 is rotatably connected to the top end of the long rod 35, the top end of the long rod 35 is provided with a thread, the long rod 35 is threadedly connected to the sleeve 39, the top end of the sleeve 39 is in contact with the bottom end of the top rod 40, and the abutment block 44 is connected to the two sets of push rods. 47 is welded and fixed, the top of the push rod 47 contacts with both sides of the connecting gear 46, the top part of the push rod 47 is annular in design, a second spring 48 and an insertion rod 50 are welded and fixed on the side of the push rod 47 away from the connecting gear 46, the insertion rod 50 is inserted on the protrusion 49, the protrusion 49 is welded and fixed to the fixing seat 45, the fixing plate 41 and the fixing seat 45 are both welded and fixed to the inner wall of the outer tank 20, the two sides of the connecting gear 46 are slidably connected in the through groove 51, the through groove 51 is opened on the fixing seat 45, four groups of mounting grooves 36 are opened on the outer side of the inner tank 1, and a long rack 37 is welded and fixed on the inner wall of the mounting groove 36; The anti-fall mechanism includes a ratchet 55, which is welded and fixed to one side of the connecting gear 46, and a pawl 54 is rotatably connected to one side of the fixing seat 45 close to the ratchet 55, and the bottom end of the pawl 54 contacts the convex plate 56, and a connecting spring 53 is welded and fixed to the top end of the pawl 54, and the top end of the connecting spring 53 is fixed to the fixing block 52 by welding, and the fixing block 52 and the convex plate 56 are both welded and fixed to the fixing seat 45; When working, through the structural design of the clamping mechanism, when the chemical raw materials stored in the inner tank 1 are reduced to a certain weight, under the action of the support spring 64, the lifting seat 34 will push the inner tank 1 upward, and in the process of the lifting seat 34 moving upward, it will drive the connecting rod 33 to move, and the second rack 31 drives the first rack 26 to move in the opposite direction by meshing with the driving gear 30, so that the clamping block 24 fixed on the clamping plate 25 is no longer inserted in the clamping groove 23, thereby releasing the clamping and fixing of the inner tank 1 by the clamping plate 25, so that the inner tank 1 can be taken out of the outer tank 20, so as to repair the damaged position on the outer side of the inner tank 1, the bottom end of the inner tank 1 contacts the lifting seat 34, and the lifting seat 34 is supported by the support spring 64. When there are chemical raw materials stored in the inner tank 1, under the action of gravity, the support spring 64 fixed inside the lifting seat 34 will be in a compressed state. When the inner tank 1 is to be cleaned or the inner and outer sides of the inner tank 1 are to be maintained, the chemical raw materials inside the inner tank 1 are firstly The material is continuously extracted. When the weight of the inner tank 1 is reduced to a certain extent, the support spring 64 will gradually overcome the gravity of the inner tank 1 and push the inner tank 1 to gradually move upward for a distance through the lifting seat 34. When the lifting seat 34 moves upward, the four sets of connecting rods 33 rotatably connected to the lifting seat 34 will drive the pulley 32 to move in the direction close to the lifting seat 34. Since the second rack 31 fixed on the pulley 32 is engaged with the sliding drive gear 30, it can drive the pulley 32 to move in the process of moving. The driving gear 30 rotates, and the other side of the driving gear 30 meshes with the first rack 26, so the first rack 26 will move in the opposite direction to the second rack 31, and the clamping plate 25 fixedly connected to the top of the first rack 26 will gradually move away from the inner tank 1, and the block 24 inserted in the slot 23 will also be separated from the slot 23, and the clamping plate 25 will no longer clamp the inner tank 1, so that the inner tank 1 can be smoothly taken out of the outer tank 20 to repair and maintain the outer side and inner wall of the inner tank 1.

[0022] Through the structural design of the pushing mechanism, in the process of the second rack 31 driving the driving gear 30 to rotate, the driving gear 30 will synchronously drive the long rod 35 to rotate, and the sleeve 39 threadedly connected to the top of the long rod 35 will move upward and push the push rod 40, and the top block 43 fixed at the top of the push rod 40 will push the abutment block 44, and the abutment block 44 will push the push rod 47 to move, and the push rod 47 will push the connecting gear 46 to move until the connecting gear 46 is meshed with the long rack 37. At this time, the inner tank 1 can be smoothly pulled upward to ensure that the inner tank 1 will not deviate during the pulling process. In the process of the driving gear 30 rotating, the long rod 35 fixedly connected to the top of the driving gear 30 will also rotate synchronously. When the long rod 35 rotates, it drives the sleeve 39 threadedly connected to its top end to move upward, and the top of the sleeve 39 contacts the bottom end of the push rod 40, and the sleeve 39 will push the push rod 40 to move upward until it is engaged with the fixed When the bottom end of the plate 41 contacts and the push rod 40 moves upward, the push block 43 fixed on the top of the push rod 40 will abut against the abutment block 44 and push the abutment block 44 to move. The abutment block 44 is connected to the push rod 47. Since the top of the push rod 47 is in contact with the connecting gear 46, the push rod 47 can push the connecting gear 46 close to the long rack 37 until the connecting gear 46 is meshed with the long rack 37. The second spring 48 fixed on the push rod 47 will be stretched. At this time, when the inner tank 1 is pulled upward to be taken out of the outer tank 20, the meshing of the connecting gear 46 and the long rack 37 can be used to ensure that the inner tank 1 can remain stable during the movement and avoid displacement. Similarly, when the push block 43 no longer abuts against the abutment block 44, the push rod 47 can pull the connecting gear 46 back to its original position under the action of the second spring 48. The through groove 51 is used to limit the moving range of the connecting gear 46.

[0023] Through the structural design of the anti-fall mechanism, in the process of pulling the inner tank 1 upward, the long rack 37 will drive the connecting gear 46 to rotate, and the ratchet 55 connected to the connecting gear 46 will rotate synchronously. The design of the pawl 54 ensures that the connecting gear 46 can only rotate in a single direction to prevent the inner tank 1 from falling suddenly and causing the bottom end of the inner tank 1 to collide with the inner wall of the outer tank 20. At the same time, it is also convenient to fix the inner tank 1 at a certain height when pulling the inner tank 1, so as to repair the outer side of the inner tank 1. In order to prevent the inner tank 1 from falling due to mistakes in the process of pulling the inner tank 1 upward, a ratchet 55 is fixed on one side of the connecting gear 46. When the push rod 47 pushes the connecting gear 46 to move, the connecting gear 46 will drive the ratchet 55 to move together. When the connecting gear 46 moves to the maximum position in the through groove 51, the ratchet 55 will By keeping in contact with the pawl 54, the pawl 54 can ensure that the ratchet 55 does not rotate in the opposite direction, thereby preventing the inner tank 1 from falling. When the inner tank 1 is pulled upward to a certain height by hand, the inner tank 1 can be fixed by the engagement of the pawl 54 and the ratchet 55 after letting go. At this time, it is convenient to maintain the outside of the inner tank 1, wherein a connecting spring 53 is fixed to the top of the pawl 54, and the connecting spring 53 is used to ensure that the pawl 54 can keep in contact with the ratchet 55. The convex plate 56 is used to support and fix the pawl 54. When the inner tank 1 needs to be replaced in the outer tank 20, it is only necessary to rotate the inner tank 1 at a small angle so that the long rack 37 fixed on the outside of the inner tank 1 is staggered with the connecting gear 46. After the inner tank 1 is successfully placed in the outer tank 20, the inner tank 1 is rotated again so that the long rack 37 and the connecting gear 46 are meshed again.

[0024] Example 2: Please refer to Figure 5 and Figure 6 As shown, in contrast to Example 1, as another embodiment of the present invention, the bottom end of the lifting seat 34 contacts the support ring 60, the bottom end of the support ring 60 is welded and fixed to the inner wall of the outer tank 20, and four groups of positioning columns 59 are welded and fixed to the top of the support ring 60. The positioning columns 59 are distributed in a circle on the support ring 60, and the positioning columns 59 are inserted into the inside of the positioning holes 58. The positioning holes 58 are opened at the bottom end of the lifting seat 34; During operation, the bottom end of the lifting seat 34 contacts the support ring 60 so that the bottom end of the lifting seat 34 can be supported by the support ring 60, and a positioning column 59 is also fixed on the lifting seat 34. By inserting the positioning column 59 into the positioning hole 58, the connection strength between the bottom end of the lifting seat 34 and the support ring 60 can be improved, ensuring that the lifting seat 34 will not move relative to the support ring 60.

[0025] See also Figure 5 and Figure 7 As shown, the bottom end of the inner tank 1 contacts with a plurality of support blocks 57, and the support blocks 57 are welded and fixed to the inner wall of the outer tank 20; During operation, the bottom end of the inner tank 1 is supported and fixed by multiple groups of support blocks 57 so that the inner tank 1 can be placed more stably inside the outer tank 20. The support blocks 57 are all arc-shaped in design, and two adjacent groups of support blocks 57 are also in contact with both sides of the connecting rod 33 to limit the movement of the connecting rod 33 in the horizontal direction.

[0026] See also Figure 2 and Figure 4 As shown, four groups of long plates 62 are fixedly connected to the inner wall of the inner tank 1, and the long plates 62 are designed in an arc shape; During operation, the long plate 62 is designed to be arc-shaped so as to fit the inner wall of the inner tank 1, and the fixed position of the long plate 62 corresponds to the opening position of the card slot 23 and the installation slot 36, so that the inner wall thickness of the inner tank 1 can be kept consistent.

[0027] See also Figure 2 and Figure 5 As shown, three sets of fixing rings 61 are sleeved on the long rod 35, and the fixing rings 61 are fixedly connected to the inner wall of the outer tank 20; During operation, the three sets of fixing rings 61 are all fixed to the inner wall of the outer tank 20. The fixing rings 61 are sleeved on the long rod 35, so that the long rod 35 can remain stable during rotation, reduce shaking, and make the transmission more stable.

[0028] See also Figure 1 As shown, the bottom end of the outer tank 20 is provided with a plurality of groups of small holes 65, and the plurality of groups of small holes 65 are distributed in a circumferential manner on the outer tank 20; During operation, the small hole 65 starts at a position near the bottom of the outer tank 20 and is used to connect to the interior of the outer tank 20. When the inner tank 1 is damaged and leaks, the leaked chemical raw materials can flow out through the small hole 65, so that the maintenance personnel can repair the inner tank 1 in time. At the same time, when the inner wall of the outer tank 20 is flushed and cleaned, the cleaned water can also be smoothly discharged through the small hole 65.

[0029] See also Figure 1 and Figure 2 As shown, a handle 63 is welded and fixed to the top end of the cover plate 21, and a rubber pad 66 is glued and fixed to the bottom end of the handle 63; During operation, the handle 63 is designed to facilitate pulling the cover plate 21 to open the outer tank 20 , and a rubber pad 66 is fixed to the bottom of the handle 63 to facilitate holding the handle 63 .

[0030] Working principle: In the prior art, a double-layer tank wall leak-proof storage tank has a bottom end of the outer tank wall and the inner tank wall connected to the bottom plate. Therefore, when the outer side of the inner tank is damaged, it is difficult to repair it on the outer side of the inner tank due to the distance between the outer tank and the inner tank. The damaged position can only be repaired at the inner tank wall, which makes the repair effect relatively limited. In this case, a leak-proof chemical storage tank is designed with a clamping mechanism. When the chemical raw materials stored in the inner tank 1 are reduced to a certain weight, the lifting seat 34 will push the inner tank 1 upward under the action of the support spring 64, and In the process of the lifting seat 34 moving upward, the connecting rod 33 is driven to move, and the second rack 31 drives the first rack 26 to move in the opposite direction by meshing with the driving gear 30, so that the block 24 fixed on the clamping plate 25 is no longer inserted in the clamping groove 23, thereby releasing the clamping and fixing of the inner tank 1 by the clamping plate 25, so that the inner tank 1 can be taken out from the outer tank 20, so as to repair the damaged position on the outer side of the inner tank 1. The bottom end of the inner tank 1 contacts the lifting seat 34, and the lifting seat 34 is supported by the support spring 64. When chemical raw materials are stored in the inner tank 1, under the action of gravity , the support spring 64 fixed inside the lifting seat 34 will be in a compressed state. When the inner tank 1 is to be cleaned or the inner and outer sides of the inner tank 1 are to be maintained, the chemical raw materials inside the inner tank 1 are firstly continuously extracted. When the weight of the inner tank 1 is reduced to a certain extent, the support spring 64 will gradually overcome the gravity of the inner tank 1 and push the inner tank 1 to gradually move upward for a distance through the lifting seat 34. When the lifting seat 34 moves upward, the four groups of connecting rods 33 rotatably connected to the lifting seat 34 will drive the pulley 32 to move in the direction close to the lifting seat 34. Due to the second gear fixed on the pulley 32 The rack 31 is meshed with the driving gear 30, so it can drive the driving gear 30 to rotate during the movement of the pulley 32. The other side of the driving gear 30 is meshed with the first rack 26, so the first rack 26 will move in the opposite direction to the second rack 31, and the clamping plate 25 fixedly connected to the top of the first rack 26 will gradually move away from the inner tank 1, and the block 24 inserted in the slot 23 will also be separated from the slot 23, and the clamping plate 25 will no longer clamp the inner tank 1, so that the inner tank 1 can be smoothly taken out of the outer tank 20 to repair and maintain the outer side and inner wall of the inner tank 1.

[0031] Through the structural design of the pushing mechanism, in the process of the second rack 31 driving the driving gear 30 to rotate, the driving gear 30 will synchronously drive the long rod 35 to rotate, and the sleeve 39 threadedly connected to the top of the long rod 35 will move upward and push the push rod 40, and the top block 43 fixed at the top of the push rod 40 will push the abutment block 44, and the abutment block 44 will push the push rod 47 to move, and the push rod 47 will push the connecting gear 46 to move until the connecting gear 46 is meshed with the long rack 37. At this time, the inner tank 1 can be smoothly pulled upward to ensure that the inner tank 1 will not deviate during the pulling process. In the process of the driving gear 30 rotating, the long rod 35 fixedly connected to the top of the driving gear 30 will also rotate synchronously. When the long rod 35 rotates, it drives the sleeve 39 threadedly connected to its top end to move upward, and the top of the sleeve 39 contacts the bottom end of the push rod 40, and the sleeve 39 will push the push rod 40 to move upward until it is engaged with the fixed When the bottom end of the plate 41 contacts and the push rod 40 moves upward, the push block 43 fixed on the top of the push rod 40 will abut against the abutment block 44 and push the abutment block 44 to move. The abutment block 44 is connected to the push rod 47. Since the top of the push rod 47 is in contact with the connecting gear 46, the push rod 47 can push the connecting gear 46 close to the long rack 37 until the connecting gear 46 is meshed with the long rack 37. The second spring 48 fixed on the push rod 47 will be stretched. At this time, when the inner tank 1 is pulled upward to be taken out of the outer tank 20, the meshing of the connecting gear 46 and the long rack 37 can be used to ensure that the inner tank 1 can remain stable during the movement and avoid displacement. Similarly, when the push block 43 no longer abuts against the abutment block 44, the push rod 47 can pull the connecting gear 46 back to its original position under the action of the second spring 48. The through groove 51 is used to limit the moving range of the connecting gear 46.

[0032] Through the structural design of the anti-fall mechanism, in the process of pulling the inner tank 1 upward, the long rack 37 will drive the connecting gear 46 to rotate, and the ratchet 55 connected to the connecting gear 46 will rotate synchronously. The design of the pawl 54 ensures that the connecting gear 46 can only rotate in a single direction to prevent the inner tank 1 from falling suddenly and causing the bottom end of the inner tank 1 to collide with the inner wall of the outer tank 20. At the same time, it is also convenient to fix the inner tank 1 at a certain height when pulling the inner tank 1, so as to repair the outer side of the inner tank 1. In order to prevent the inner tank 1 from falling due to mistakes in the process of pulling the inner tank 1 upward, a ratchet 55 is fixed on one side of the connecting gear 46. When the push rod 47 pushes the connecting gear 46 to move, the connecting gear 46 will drive the ratchet 55 to move together. When the connecting gear 46 moves to the maximum position in the through groove 51, the ratchet 55 will By keeping in contact with the pawl 54, the pawl 54 can ensure that the ratchet 55 does not rotate in the opposite direction, thereby preventing the inner tank 1 from falling. When the inner tank 1 is pulled upward to a certain height by hand, the inner tank 1 can be fixed by the engagement of the pawl 54 and the ratchet 55 after letting go. At this time, it is convenient to maintain the outside of the inner tank 1, wherein a connecting spring 53 is fixed to the top of the pawl 54, and the connecting spring 53 is used to ensure that the pawl 54 can keep in contact with the ratchet 55. The convex plate 56 is used to support and fix the pawl 54. When the inner tank 1 needs to be replaced in the outer tank 20, it is only necessary to rotate the inner tank 1 at a small angle so that the long rack 37 fixed on the outside of the inner tank 1 is staggered with the connecting gear 46. After the inner tank 1 is successfully placed in the outer tank 20, the inner tank 1 is rotated again so that the long rack 37 and the connecting gear 46 are meshed again.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A leakproof chemical storage tank, comprising an inner tank (1) and an outer tank (20), wherein the top end of the outer tank (20) is rotatably connected to a cover plate (21), characterized in that: A circular groove (22) is provided at the bottom end of the inner tank (1), and a lifting seat (34) is provided inside the circular groove (22). A clamping mechanism is provided inside the outer tank (20), and the clamping mechanism is used to clamp and fix the bottom end of the inner tank (1). The inner wall of the outer tank (20) is rotatably connected to the driving gear (30). A long rod (35) is fixedly connected to the top of the driving gear (30), and a pushing mechanism is provided on the long rod (35). The pushing mechanism is used to push the connecting gear (46) to engage with the long rack (37). An anti-falling mechanism is provided on one side of the connecting gear (46), and the anti-falling mechanism is used to prevent the inner tank (1) from suddenly falling during the rising process.

2. A leakproof chemical storage tank according to claim 1, characterized in that: The clamping mechanism comprises a plurality of groups of clamping blocks (24), the plurality of groups of clamping blocks (24) being fixedly connected to a clamping plate (25), the clamping blocks (24) being clamped inside a clamping slot (23), the clamping slot (23) being provided on the outside of the inner tank (1), the bottom end of the clamping plate (25) being fixedly connected to a first rack (26), the bottom end of the first rack (26) being slidably connected to a sliding bottom plate (28), the sliding bottom plate (28) being fixedly connected to an inner wall of the outer tank (20), the first rack (26) being meshed with a driving gear (30), the driving gear (30) The side away from the first rack (26) is meshed with the second rack (31), the second rack (31) is fixedly connected to one side of the pulley (32), the top end of the pulley (32) is rotatably connected to the connecting rod (33), the side of the connecting rod (33) away from the pulley (32) is rotatably connected to the lifting seat (34), the bottom end of the lifting seat (34) is hollowed out, the bottom end of the lifting seat (34) is fixedly connected to a support spring (64), the bottom end of the support spring (64) is fixedly connected to the inner wall of the outer tank (20), and four groups of connecting rods (33) are provided.

3. A leakproof chemical storage tank according to claim 1, characterized in that: The pushing mechanism comprises a top block (43), the top end of the top block (43) contacts the abutment block (44), the top block (43) and the abutment block (44) are both trapezoidal in design, the bottom end of the top block (43) is fixedly connected to a first spring (42) and a top rod (40), the first spring (42) is sleeved on the outside of the top rod (40), the bottom end of the first spring (42) is fixedly connected to a fixing plate (41), the bottom end of the fixing plate (41) is rotatably connected to the top end of a long rod (35), the top end of the long rod (35) is provided with a thread, the long rod (35) is threadedly connected to a sleeve (39), the top end of the sleeve (39) contacts the bottom end of the top rod (40), the abutment block (44) is connected to the two sets of push rods ( The top end of the push rod (47) contacts with both sides of the connecting gear (46), and the side of the push rod (47) away from the connecting gear (46) is fixedly connected with a second spring (48) and an insertion rod (50), and the insertion rod (50) is inserted into the protrusion (49), and the protrusion (49) is fixedly connected to the fixing seat (45). The fixing plate (41) and the fixing seat (45) are both fixedly connected to the inner wall of the outer tank (20), and the two sides of the connecting gear (46) are slidably connected in the through groove (51), and the through groove (51) is provided on the fixing seat (45). The outer side of the inner tank (1) is provided with four groups of mounting grooves (36), and the inner wall of the mounting groove (36) is fixedly connected with a long rack (37).

4. A leakproof chemical storage tank according to claim 3, characterized in that: The anti-fall mechanism comprises a ratchet (55), wherein the ratchet (55) is fixedly connected to one side of a connecting gear (46), and a pawl (54) is rotatably connected to one side of the fixing seat (45) close to the ratchet (55), wherein the bottom end of the pawl (54) contacts the convex plate (56), and the top end of the pawl (54) is fixedly connected to a connecting spring (53), and the top end of the connecting spring (53) is fixedly connected to a fixing block (52), and the fixing block (52) and the convex plate (56) are both fixedly connected to the fixing seat (45).

5. A leakproof chemical storage tank according to claim 1, characterized in that: The bottom end of the lifting seat (34) contacts the support ring (60), and the bottom end of the support ring (60) is fixedly connected to the inner wall of the outer tank (20). The top end of the support ring (60) is fixedly connected with four groups of positioning columns (59), and the positioning columns (59) are inserted into the inside of the positioning holes (58). The positioning holes (58) are opened at the bottom end of the lifting seat (34).

6. A leakproof chemical storage tank according to claim 1, characterized in that: The bottom end of the inner tank (1) contacts a plurality of groups of support blocks (57), and the support blocks (57) are fixedly connected to the inner wall of the outer tank (20).

7. A leakproof chemical storage tank according to claim 1, characterized in that: Four groups of long plates (62) are fixedly connected to the inner wall of the inner tank (1), and the long plates (62) are designed to be arc-shaped.

8. A leakproof chemical storage tank according to claim 3, characterized in that: Three sets of fixing rings (61) are sleeved on the long rod (35), and the fixing rings (61) are fixedly connected to the inner wall of the outer tank (20).

9. A leakproof chemical storage tank according to claim 6, characterized in that: The bottom end of the outer tank (20) is provided with a plurality of groups of small holes (65), and the plurality of groups of small holes (65) are distributed in a circumferential manner on the outer tank (20).

10. The leakproof chemical storage tank according to claim 1, characterized in that: The top end of the cover plate (21) is fixedly connected to a handle (63), and the bottom end of the handle (63) is fixedly connected to a rubber pad (66).

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