Automatic continuous leakage-free sealed drinking water tank and occlusion forming method thereof

Abstract

The invention discloses an automatic continuous leakage-free sealed drinking water tank and an occlusion forming method thereof, and relates to the field of large liquid storage tanks. According to the invention, the traditional manual glue injection sealing occlusion forming method is perfected and upgraded. According to the invention, the silica gel sealing tape is used for replacing the traditional liquid silicone adhesive, and the automatic continuous sealing operation is used for replacing the traditional manual adhesive injection for sealing. According to the meshing forming method, the notch rolling meshing equipment spirally moves forwards, automatically and continuously unfolds the silica gel sealing tape, and meshes and nests the notch and wraps and extrudes the silica gel sealing tape at the same time. By means of the forming method, the drinking water tank meeting the drinking standard can be smoothly and efficiently formed in an occlusion mode, automatic sealing, continuous sealing and leakage-free sealing can be achieved in the occlusion process, the sealing effect and sealing efficiency are greatly improved, traditional manual glue injection operation is omitted, and the production cost is reduced. And the technical problems of glue breaking, glue injection discontinuity, glue injection non-uniformity and the like in the traditional manual glue injection are avoided and solved.

Description

Technical Field

[0001] The present invention relates to the technical field of large-scale liquid storage tanks, and more specifically to an automatic, continuous, leak-proof and sealed drinking water tank and its bite forming method, which is particularly suitable for large-scale storage and transportation of drinking-grade domestic water that meets national standards and production of drinking water products and beverages. Background Art

[0002] At present, the manufacturing process of large tanks for storing drinking water and producing drinking water products and beverages that meet national standards can be divided into two categories: one is to use SU30 stainless steel materials that meet national food safety standards and directly assemble and weld them piece by piece; the other is to use SU304 stainless steel coils that meet food safety standards to form spiral bite rolls, and manually inject food-grade liquid sealant at the bite joints to seal the gaps between the steel plates. For liquid material storage tanks, one of the most critical technologies is the sealing problem between the steel plate joints during the tank manufacturing process. The first manufacturing process of directly assembling and welding steel plates piece by piece has the following shortcomings: on the one hand, the chemical agent components in the welding rod will cause the formed weld to affect the quality of liquid materials such as drinking water products and beverages; on the other hand, there are many locations that need to be welded, and the welds need to be polished after welding. The welding effect is also directly linked to the welding level of the workers. Therefore, when the welding process is adopted as a whole, not only is the production efficiency relatively low, it is time-consuming, labor-intensive, and costly, but the firmness, sealing, and uniformity of the welding are also difficult to guarantee. At the same time, when detecting the firmness and sealing of the welding, it is necessary to use instruments such as ultrasonic flaw detectors. Because of the above-mentioned shortcomings of the first manufacturing process of directly assembling and welding steel plates piece by piece, the bite roll forming process has emerged. Compared with the manufacturing process of directly assembling and welding steel plates piece by piece, the interlocking roller forming process uses interlocking forming instead of welding at the interface, which simplifies the operation, greatly improves the manufacturing efficiency, and avoids the influence of welding rods and welds on water quality. However, there are still some defects in the sealing of drinking water liquid material storage tanks using the spiral interlocking roller forming process: (1) In this process, food-grade colloid liquid silicone glue is manually injected into the interlocking joint for sealing. Because liquid silicone glue has a certain fluidity, the lack of liquid silicone glue at the sealing joint during the interlocking roller forming process often causes poor sealing or even leakage. (2) Due to the limited capacity of each piece of food-grade silicone glue, the replacement frequency is very high. In addition, due to manual injection of glue, problems such as glue breakage and difficulty in controlling the injection amount often occur during the continuous rolling process. For example, excessive glue causes waste, and insufficient glue easily causes poor sealing. In addition, it is difficult to detect in the later stage, which also brings great difficulties and economic losses to the later repair of large tank leakage. It can be seen from this that there is a need to improve and upgrade the spiral interlocking roller forming method for making drinking water tanks, and design a process that can automatically and continuously seal without leakage during the interlocking process, to achieve automatic sealing, continuous sealing, and leakage-free sealing, eliminating the manual injection operation in the traditional interlocking process, and avoiding technical problems such as breakage, discontinuity, and uneven injection caused by manual injection. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic, continuous, leak-free sealed drinking water tank and its bite forming method in view of the deficiencies in the above-mentioned prior art. The present invention can not only smoothly and efficiently bite and form a drinking water tank that meets drinking standards, but also can achieve automatic sealing, continuous sealing, and leak-free sealing during the bite process, greatly improving the sealing effect and sealing efficiency, eliminating the manual glue injection operation in the traditional bite process, and also avoiding and solving the technical problems such as glue breakage, discontinuous glue injection, and uneven glue injection generated in the traditional manual glue injection.

[0004] The purpose of the present invention can be achieved by the following technical measures: The invention discloses an automatic, continuous, and leak-proof sealed drinking water tank, which is composed of two adjacent layers of metal steel strips with an upper boss and a lower groove in the cross section and spirally stacked in the length direction, and is nested and interlocked in sequence. The tank body is welded with a tank bottom and a foundation after the upper and lower flat edges are formed, and the top cover is fastened to finally form an integral tank for storing drinking water with no leakage and sealing. In the process of nesting the lower groove and the upper boss of the upper and lower adjacent layers of the metal steel strips, two continuously rolled silicone sealing tapes are respectively placed at two interlocking corners and then interlocked to form a leak-proof five-layer bite with a five-layer plate thickness wrapped around two continuous sealing tape structures.

[0005] The upper edge boss described in the present invention is a U-shaped structure with an open side facing downwards formed by the upper edge of the steel plate being bent by two consecutive 90-degree external flangings.

[0006] The lower edge groove described in the present invention is an open horizontal inward U-shaped structure formed by the lower edge of the steel plate being bent twice by 90 degrees inward and once by 90 degrees outward.

[0007] The silicone sealing tape of the present invention is wound on a sealing tape core shaft before being unfolded; the sealing tape core shaft is a hollow cylindrical structure with a limiting disk at one end.

[0008] The steps of the bite forming method of the automatic continuous leakage-free sealed drinking water tank of the present invention are as follows: A. Rolled metal steel strip: The steel strip roll forming equipment is used to roll the steel plate into a metal steel strip with an upper boss and a lower groove in the cross section, and a spiral layered coil in the length direction; B. Notch nesting: The upper and lower adjacent layers of the spirally stacked metal steel strips are notched in sequence, that is, the upper edge boss of the lower metal steel strip is inserted into the lower edge groove of the upper metal steel strip; C. Introducing the first sealing tape: First, hang the rolled silicone sealing tape on the notch rolling and biting equipment, that is, insert and hang the sealing tape mandrel on the corresponding pay-off shaft of the notch rolling and biting equipment; then introduce and fix the free end of the silicone sealing tape to the first biting corner in the nested notch section located at the biting starting point, that is, the lower inner turning edge bend in the lower edge groove; D. First bite and first continuous sealing: Start the slot roller bite device, which spirally moves forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape. At the same time, it also performs the first bite on the first bite corner of the nested slot, and in the process of the first bite, the automatically and continuously unfolded silicone sealing tape is wrapped and squeezed to form the first continuous sealing tape; E. Introducing the second sealing tape: Similarly, first hang the rolled silicone sealing tape on the notch rolling and biting device, that is, insert and hang the sealing tape mandrel on the corresponding pay-off shaft of the notch rolling and biting device; then introduce and fix the free end of the silicone sealing tape to the second biting corner in the nested notch section located at the biting starting point, that is, the outer flange bend on the outer side of the upper edge boss; F. Two-pass bite and two-pass continuous sealing: Start the slot roller bite device, which starts to spiral forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape, and also performs two-pass bites on the two-pass bite corners of the nested slots, and wraps and squeezes the automatically and continuously unfolded silicone sealing tape during the two-pass bite to form two continuous sealing tapes; thus, after two passes of bites, the metal steel belt forms a leak-free five-layer bite structure with five layers of plate thickness wrapped around two continuous sealing tapes at the nested bite parts of the upper and lower adjacent layers of each segment, and the overall metal steel belt forms a tank filling silo body with the same inner cavity and automatic, continuous and leak-free sealing; G. Improve the drinking water tank: When the tank body obtained in step F reaches 3 meters, first flatten the upper edge and complete the top cover welding; then build it to the required tank body height, flatten the lower edge, rotate it in the opposite direction and fall it on the bottom surface of the base silo and complete its welding, finally forming a leak-proof and sealed drinking water tank.

[0009] The metal steel belt in the present invention is made of SU304 stainless steel material that meets national food and drinking grade standards.

[0010] The silicone sealing tape of the present invention is an elastic soft solid conforming to the national food and drinking grade standards, and has a cross-sectional shape of any one of round, square and U-shaped, and a cross-sectional outer dimension of 3 to 10 mm.

[0011] The design principle of the present invention is as follows: The present invention is a perfection and upgrade of the bite forming method of the traditional manual injection sealing. On the one hand, the present invention adopts a silicone sealing tape that meets the national food and drinking grade standards and is an elastic soft solid to replace the traditional liquid silicone glue for sealing. On the other hand, the present invention replaces the traditional manual injection method with an automatic continuous sealing operation mode - that is, in the bite forming method of the present invention, the silicone sealing tape is hung on the corresponding pay-off shaft of the slot roller bite device, and the slot roller bite device is to spirally move forward while automatically and continuously unfolding the silicone sealing tape, while biting the nested slot and wrapping and extruding the silicone sealing tape. The operation forming method of the present invention can not only smoothly and efficiently bite and form a drinking water tank that meets the drinking standard, but also can realize automatic sealing, continuous sealing, and leakage-free sealing during the bite process, greatly improving the sealing effect and sealing efficiency, eliminating the manual injection operation in the traditional bite process, and also avoiding and solving the technical problems such as glue breakage, discontinuous injection, and uneven injection generated in the traditional manual injection. More specifically, the present invention first nests the upper and lower adjacent layers of a metal steel belt with an upper boss and a lower groove on its cross section and spirally stacked in the length direction, and then hangs the rolled silicone sealing tape on the slot rolling bite device, and cleverly finds a suitable biting corner in the nested slot to introduce and fix the silicone sealing tape end, and then starts the slot rolling bite device. The slot rolling bite device starts to spirally move forward from the biting starting point, automatically and continuously unfolds the silicone sealing tape, and biting the nested slot and wrapping and extruding the silicone sealing tape - that is, the slot rolling bite device bites the biting corner of the nested slot, and in the biting process, the automatically and continuously unfolded silicone sealing tape is wrapped and extruded to form a continuous sealing tape. In this way, after the two above-mentioned bites, the first continuous sealing belt and the second continuous sealing belt will be formed in the nested groove in turn, and the nested bite part will form a leakage-proof five-layer bite structure in which two continuous sealing belts are wrapped with five layers of plate thickness, and the overall metal steel belt forms a pool filling warehouse body with the same inner cavity and automatic continuous leakage-proof sealing - because if liquid leaks, it must be along the joint between the upper and lower sections, and the joint formed by the bite of the present invention has formed a leakage-proof five-layer bite structure in which two continuous sealing belts are wrapped with five layers of plate thickness, which can effectively avoid liquid leakage and achieve continuous and uninterrupted leakage-proof sealing.

[0012] The beneficial technical effects of the present invention are as follows: The present invention can not only smoothly and efficiently bite and form drinking water tanks that meet drinking water standards, but also achieve automatic sealing, continuous sealing, and leakage-free sealing during the biting process, greatly improving the sealing effect and sealing efficiency, eliminating the manual glue injection operation in the traditional biting process, and avoiding and solving technical problems such as glue breakage, discontinuity in glue injection, and uneven glue injection generated in the traditional manual glue injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a complete diagram of a drinking water tank.

[0014] Figure 2 It is an axial schematic diagram of the tank filling body in the present invention.

[0015] Figure 3 yes Figure 2 A local enlarged view of point E in the middle (i.e. a local enlarged view of the five-layer bite without leakage).

[0016] Figure 4 It is a schematic diagram of the cross section of a metal steel strip.

[0017] Figure 5 It is a schematic diagram of the axial side of a rolled silicone sealing tape.

[0018] Figure 6 It is a schematic diagram of the state after the upper and lower adjacent layers of metal steel belt notches are nested.

[0019] Figure 7 This is a schematic diagram of the state when the first silicone sealing tape is introduced for the first bite.

[0020] Figure 8 This is a schematic diagram of the state when the second silicone sealing tape is introduced after the first bite.

[0021] Fig. 9 It is a schematic diagram of the state when a leak-free five-layer bite is formed after two bites.

[0022] Explanation of the part numbers in the figure: 1. Tank filling bin body, 2. Silicone sealing tape, 2-1. First continuous sealing tape, 2-2. Second continuous sealing tape, 3. Metal steel tape, 3-1. Upper edge boss, 3-2. Lower edge groove, 4. Leak-proof five-layer bite, 5. Sealing tape core shaft, 5-1. Limiting plate, 6. Bin bottom, 7. Top cover, 8. Foundation. DETAILED DESCRIPTION

[0023] The present invention will be further described in conjunction with the following drawings: like Figures 1 to 9 As shown, an automatic continuous and leak-proof sealed drinking water tank of the present invention is composed of a metal steel strip 3 with an upper edge boss 3-1 and a lower edge groove 3-2 in the cross section and spirally stacked in the length direction. The upper and lower adjacent layers of the tank body 1 are nested and bitten in sequence, and then the tank bottom 6 and the foundation 8 are welded after the upper and lower flat edges, and the top cover 7 is buckled to finally form an integral tank for storing drinking water with no leakage and sealing; wherein in the process of nesting the lower edge groove 3-2 and the upper edge boss 3-1 of the upper and lower adjacent layers of the metal steel strip 3, two continuously rolled silicone sealing tapes 2 are respectively placed at two biting corners and then bitten to form a leak-proof five-layer bite 4 with five layers of plate thickness wrapped around two continuous sealing tape structures.

[0024] The upper edge boss 3 - 1 described in the present invention is a U-shaped structure with an open side facing downwards formed by the upper edge of the steel plate being bent 90 degrees twice in a row.

[0025] The lower edge groove 3-2 described in the present invention is an open horizontal inward U-shaped structure formed by the lower edge of the steel plate being bent twice by 90 degrees inwardly and once by 90 degrees outwardly.

[0026] The silicone sealing tape 2 of the present invention is wound on a sealing tape core shaft 5 before being unfolded; the sealing tape core shaft 5 is a hollow cylindrical structure with a limiting disk 5 - 1 at one end.

[0027] The steps of the bite forming method of the automatic continuous leakage-free sealed drinking water tank of the present invention are as follows: A. Rolled metal steel strip: The steel strip roll forming equipment is used to roll the steel plate into a metal steel strip 3 having an upper boss 3-1 and a lower groove 3-2 in the cross section and a spirally stacked metal steel strip 3 in the length direction; B. Notch nesting: The upper and lower adjacent layers of the spirally stacked metal steel strips 3 are notched nested in sequence, that is, the upper edge boss 3-1 of the lower metal steel strip is inserted into the lower edge groove 3-2 of the upper metal steel strip; C. Introducing the first sealing tape: first hang the rolled silicone sealing tape 2 on the notch rolling and biting device, that is, insert and hang the sealing tape core shaft 5 on the corresponding pay-off shaft of the notch rolling and biting device; then introduce and fix the free end of the silicone sealing tape 2 to the first biting corner in the nested notch section located at the biting starting point, that is, the lower inner turning edge bend in the lower edge groove 3-2; D. First bite and first continuous sealing: Start the slot roller bite device, which starts to spirally move forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape 2, and also performs the first bite on the first bite corner of the nested slot, and in the process of the first bite, the automatically and continuously unfolded silicone sealing tape 2 is wrapped and squeezed to form the first continuous sealing tape 2-1; E. Introducing the second sealing tape: Similarly, first hang the rolled silicone sealing tape 2 on the notch rolling and biting device, that is, insert and hang the sealing tape core shaft 5 on the corresponding pay-off shaft of the notch rolling and biting device; then introduce and fix the free end of the silicone sealing tape 2 to the second biting corner in the nested notch section located at the biting starting point, that is, the outer flange bend on the outer side of the upper edge boss 3-1; F. Two-pass bite and two-pass continuous sealing: Start the slot roller bite device, which starts to spirally move forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape 2, and also performs two-pass bites on the two-pass bite corners of the nested slots, and in the process of the two-pass bites, the automatically and continuously unfolded silicone sealing tape 2 is wrapped and squeezed to form two continuous sealing tapes 2-2; thus, after two-pass bites, the metal steel belt 3 forms a leak-free five-layer bite 4 structure with five layers of plate thickness wrapped around two continuous sealing tapes at the nested bite parts of the upper and lower adjacent layers of each segment, and the overall metal steel belt 3 forms a tank filling warehouse body 1 with the same inner cavity and automatic continuous leak-free sealing; G. Improve the drinking water tank: When the tank body 1 obtained in step F reaches 3 meters, first flatten the upper edge and complete the welding of the top cover 7; then build it to the required height of the tank body 1, flatten the lower edge, rotate it in the opposite direction and fall it on the bottom 6 of the base 8 and complete its welding, finally forming a leak-proof and sealed drinking water tank.

[0028] The metal steel belt 3 in the present invention is made of SU304 stainless steel material that meets national food and drinking grade standards.

[0029] The silicone sealing tape 2 of the present invention is an elastic soft solid that meets national food and drinking grade standards, and has a cross-sectional shape of any one of round, square, and U-shaped, and a cross-sectional dimension of 3 to 10 mm.

Claims

1. An automatic, continuous, leak-proof and sealed drinking water tank, characterized in that: The drinking water tank is a tank body (1) formed by sequentially nesting and interlocking two adjacent layers of metal steel strips (3) with upper edge bosses (3-1) and lower edge grooves (3-2) in the cross section and spirally stacked in the length direction. The tank body (1) is welded to a tank bottom (6) and a foundation (8) after the upper and lower flat edges are welded, and the top cover (7) is buckled to finally form an integral tank for storing drinking water with no leakage and sealing; wherein during the nesting process of the lower edge grooves (3-2) and the upper edge bosses (3-1) of the upper and lower adjacent layers of the metal steel strips (3), two continuously rolled silicone sealing tapes (2) are respectively placed at two interlocking corners and then interlocked to form a leak-free five-layer bite (4) with a five-layer plate thickness wrapped around two continuous sealing tape structures.

2. The automatic, continuous, leak-proof and sealed drinking water tank according to claim 1, characterized in that: The upper edge boss (3-1) is a U-shaped structure with an open opening facing downwards formed by the upper edge of the steel plate being bent 90 degrees twice in a row.

3. The automatic, continuous, leak-proof and sealed drinking water tank according to claim 1, characterized in that: The lower edge groove (3-2) is an open horizontal inward-facing U-shaped structure formed after the lower edge of the steel plate is bent twice at 90 degrees inward and once at 90 degrees outward.

4. The automatic, continuous, leak-proof and sealed drinking water tank according to claim 1, characterized in that: The silicone sealing tape (2) is wound on a sealing tape core shaft (5) before being unfolded; the sealing tape core shaft (5) is a hollow cylindrical structure with a limiting disk (5-1) at one end.

5. A method for forming the automatic, continuous, leak-proof sealed drinking water tank according to claim 1, characterized in that: The steps of the occlusal molding method are as follows: A. Rolled metal steel strip: using a steel strip roll forming device to roll a steel plate into a metal steel strip (3) having an upper convex platform (3-1) and a lower concave groove (3-2) in a cross section and being spirally layered in a length direction; B. Notch nesting: The upper and lower adjacent layers of the spirally stacked metal steel strips (3) are notched nested in sequence, that is, the upper edge boss (3-1) of the lower metal steel strip is inserted into the lower edge groove (3-2) of the upper metal steel strip; C. Introducing the first sealing tape: firstly hang the rolled silicone sealing tape (2) on the notch rolling and biting device, i.e., hang the sealing tape core shaft (5) on the corresponding pay-off shaft of the notch rolling and biting device; then, introduce and fix the free end of the silicone sealing tape (2) to the first biting corner in the nested notch section located at the biting starting point, i.e., the lower inner turning edge bend in the lower edge groove (3-2); D. First bite and first continuous sealing: start the slot roller bite device, which starts to spirally move forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape (2), and also performs the first bite on the first bite corner of the nested slot, and in the process of the first bite, wraps and squeezes the automatically and continuously unfolded silicone sealing tape (2) to form the first continuous sealing tape (2-1); E. Introducing the second sealing tape: Similarly, first hang the rolled silicone sealing tape (2) on the notch rolling and biting device, that is, insert and hang the sealing tape core shaft (5) on the corresponding pay-off shaft of the notch rolling and biting device; then introduce and fix the free end of the silicone sealing tape (2) to the second biting corner in the nested notch section located at the biting starting point, that is, the outer flange bend on the outer side of the upper edge boss (3-1); F. Two-pass bite and two-pass continuous sealing: the slot roller bite device is started, and the slot roller bite device spirally moves forward from the bite starting point while automatically and continuously unfolding the silicone sealing tape (2), and at the same time, two-pass bites are performed on the two-pass bite corners of the nested slots, and the automatically and continuously unfolded silicone sealing tape (2) is wrapped and squeezed during the two-pass bite to form two continuous sealing tapes (2-2); thus, after two-pass bites, the metal steel tape (3) forms a leak-free five-layer bite (4) structure with five layers of plate thickness wrapping the two continuous sealing tapes at the nested bite positions of the upper and lower adjacent layers of each segment, and the whole metal steel tape (3) forms a tank filling silo body (1) with the same inner cavity and automatic and continuous leak-free sealing; G. Perfecting the drinking water tank: When the tank tank body (1) obtained in step F reaches 3 meters, the upper edge is first flattened and the top cover (7) is welded; then, when the tank tank body (1) is built to the required height, the lower edge is flattened, and the tank body is rotated in the opposite direction to fall onto the bottom (6) of the tank on the foundation (8) and welded, thereby finally forming a leak-proof and sealed drinking water tank.

6. The automatic, continuous, leak-proof and sealed drinking water tank according to claim 4, characterized in that: The metal steel belt (3) is made of SU304 stainless steel material that meets national food and drinking grade standards.

7. The automatic, continuous, leak-proof and sealed drinking water tank according to claim 4, characterized in that: The silicone sealing tape (2) is an elastic soft solid silicone, the cross-sectional shape of which is any one of circular, square, and U-shaped, and the cross-sectional dimensions of which are 3 to 10 mm.

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