Acid-alkali-resistant and high-temperature-resistant chemical delivery pipe

Abstract

The invention relates to the technical field of chemical delivery pipes, and discloses an acid-base-resistant high-temperature-resistant chemical delivery pipe which comprises pipe body units spliced through splicing pieces, each pipe body unit comprises an inner pipe and an outer pipe, each inner pipe comprises an acid-base-resistant layer, a reinforcing layer and a protective layer, and each outer pipe comprises a base layer and a high-temperature-resistant layer; an annular groove is formed in the outer side wall of the outer pipe, a sliding groove communicated with the annular groove is formed in the inner wall of the outer pipe, and a sliding block is arranged on the outer wall of the inner pipe. Each splicing piece comprises spliced semi-rings, abutting pieces are arranged in the spliced semi-rings, the abutting pieces get close to each other to drive the pipe body units to get close to each other, and the abutting pieces get close to each other to drive the inner pipe to be fixed in the outer pipe; heating pieces are further arranged in the splicing semi-rings. According to the conveying pipe, the inner pipe and the outer pipe are arranged, and the outer pipe is composed of the base layer and the high-temperature-resistant layer, so that when the inner pipe is fixed in the outer pipe to form the conveying pipe, the conveying pipe has high-temperature-resistant performance and can be well suitable for conveying chemicals.

Description

Technical Field

[0001] The invention relates to the technical field of chemical delivery pipes, and in particular to an acid, alkali and high temperature resistant chemical delivery pipe. Background Art

[0002] The chemical delivery pipe is a pipeline system specially used for transporting chemicals. It is mainly composed of pipes, valves, pipe fittings, etc. Its material is usually made of high-strength and corrosion-resistant materials to ensure that chemicals can be transported stably and safely in the pipeline.

[0003] For example, the antistatic UPE chemical delivery pipe disclosed in the patent No. CN215060185U, although the chemical delivery pipe is provided with a black conductive film UHMWPE, a cord layer, a steel wire skeleton, a copper wire layer, an EPDM rubber inner layer, and an EPDM rubber outer layer, the black conductive film UHMWPE has an antistatic function, which can effectively prevent the liquid from generating static electricity when flowing in the pipe, reduce the risk of transportation, and at the same time increase the speed of chemical transportation and increase transportation efficiency. At the same time, the cord layer, the steel wire skeleton, and the copper wire layer increase the fatigue resistance and impact resistance of the entire delivery pipe to prevent the pipe body from being deflated; however, the chemical delivery pipe does not have a better high temperature resistance, which makes it not conducive to the transportation of chemicals with higher temperatures, affecting its applicability. Summary of the invention

[0004] The object of the present invention is to provide an acid, alkali and high temperature resistant chemical delivery pipe to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An acid-, alkali-, and high-temperature-resistant chemical delivery pipe, comprising a pipe body unit spliced ​​together by a splicing piece, the pipe body unit comprising an inner pipe and an outer pipe, the inner pipe comprising an acid-, alkali-resistant layer, a reinforcement layer, and a protective layer from the inside to the outside, and the outer pipe comprising a base layer and a high-temperature-resistant layer from the inside to the outside; An annular groove is arranged on the outer wall of the outer tube along its circumference, a sliding groove connected to the annular groove is arranged on the inner wall of the outer tube along its circumference, and a sliding block is arranged on the outer wall of the inner tube to slide in the sliding groove; The splicing piece includes splicing half rings spliced ​​together, and a clamping piece that can be inserted into the corresponding annular groove is arranged in the splicing half ring. The clamping pieces are close to each other to drive the tube body units to approach each other, and the clamping pieces are close to each other to drive the inner tube to be fixed in the outer tube; a heating piece is also arranged in the splicing half ring for heating the inside of the tube body unit.

[0006] Furthermore, a plug-in groove is provided in one end of the splicing half ring, a locking piece is provided in the plug-in groove, and a plug-in block that can be inserted into the corresponding plug-in groove is provided at the other end of the splicing half ring, and the locking piece is used to fix the plug-in block extending into the plug-in groove.

[0007] Furthermore, the locking member includes a movable block relatively and slidably arranged in the plug-in groove, and the opposite sides of the movable block protrude outward to form a protrusion. A rotatable first screw is provided in the plug-in groove, and the first screw thread passes through the movable block. Grooves are provided at both ends of the plug-in block. The rotation of the first screw is used to drive the movable blocks to approach each other so that the protrusion extends into the corresponding groove, thereby realizing the splicing between the splicing half rings.

[0008] Furthermore, a sliding groove is provided in the splicing half ring along its axial direction, and a rotatable second screw is provided in the sliding groove; The pressing member comprises a pressing block sliding in the annular groove, a sliding block sliding in the sliding groove is arranged on the pressing block, a second screw thread passes through the sliding block, and the second screw rotates to drive the pressing block to move in the annular groove.

[0009] Furthermore, a plurality of fastening members are distributed along the circumference of the spliced ​​half ring.

[0010] Furthermore, a semi-convex ring is provided inside the spliced ​​semi-ring and at the center position, and the tightening piece is used to make the end of the tube body unit abut against the side wall of the semi-convex ring. A cavity is provided inside the semi-convex ring, and heat-conducting fins are evenly distributed on the inner wall of the semi-convex ring, and the heating element is arranged in the cavity.

[0011] Furthermore, the opening of the cavity is arranged toward the outer side wall of the spliced ​​half ring, a blocking cover is provided at the opening of the cavity, and a reinforcing block extending into the cavity is provided on the blocking cover.

[0012] Furthermore, the heating element comprises a heating wire.

[0013] Furthermore, the ends of the spliced ​​half rings are provided with clamping grooves, and the side walls of the outer tube are provided with clamping blocks that can be clamped into the corresponding clamping grooves.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an inner tube and an outer tube, wherein the outer tube is composed of a base layer and a high temperature resistant layer, so that when the inner tube is fixed inside the outer tube to form a conveying tube, the conveying tube has high temperature resistance and can be preferably used for the transportation of chemicals.

[0015] 2. The present invention connects the semi-rings relative to each other so that they can be mounted on the ends of the relative pipe body units, thereby achieving the connection between the pipe body units. At the same time, the side walls of the annular grooves are moved and squeezed by the tightening members to bring the pipe body units closer to each other, thereby achieving the tight connection between the two and preferably splicing to form the chemical delivery pipe.

[0016] 3. The present invention enables the heating element to work by arranging the heat-conducting fins and the heating element. The heat-conducting fins can introduce heat into the chemicals transported in the delivery pipe, and the chemicals can be heated to meet the temperature requirements during chemical transportation, so that the delivery pipe can better transport the chemicals. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an acid, alkali and high temperature resistant chemical delivery pipe in the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the chemical delivery pipe in the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the outer tube in the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the inner tube in the present invention.

[0021] Figure 5 It is a cross-sectional schematic diagram of the chemical delivery pipe in the present invention.

[0022] Figure 6 This is one of the structural schematic diagrams of the spliced ​​half rings in the present invention.

[0023] Figure 7 It is a partial structural schematic diagram of the locking member in the present invention.

[0024] Figure 8 It is a schematic structural diagram of the abutting block in the present invention.

[0025] Fig. 9 This is the second structural schematic diagram of the spliced ​​half rings in the present invention.

[0026] The meaning of the symbols in the figure is: 100, splicing piece; 101, splicing half ring; 102, plugging cover; 110, inner tube; 120, outer tube; 210, acid and alkali resistant layer; 220, reinforcement layer; 230, protective layer; 240, base layer; 250, high temperature resistant layer; 301, annular groove; 302, slide groove; 303, block; 401, slider; 501, plug-in slot; 502, plug-in block; 503, sliding slot; 504, semi-convex ring; 505, card slot; 510, moving block; 511, cavity; 512, heat-conducting fin; 520, first screw; 530, second screw; 540, abutting block; 601, recessed groove; 611, convex block; 701, sliding block; 901, reinforcing block. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0028] The following is combined with Figure 1-Figure 9 This embodiment is described in further detail.

[0029] like Figure 1-5 As shown, an acid-base-resistant and high-temperature-resistant chemical delivery pipe in this embodiment includes a pipe body unit spliced ​​together by a splicing piece 100, and the pipe body unit includes an inner pipe 110 and an outer pipe 120. The inner pipe 110 includes an acid-base-resistant layer 210, a reinforcement layer 220 and a protective layer 230 from the inside to the outside, and the outer pipe 120 includes a base layer 240 and a high-temperature-resistant layer 250 from the inside to the outside. An annular groove 301 is arranged on the outer wall of the outer tube 120 along its circumference, a sliding groove 302 connected to the annular groove 301 is arranged on the inner wall of the outer tube 120 along its circumference, and a sliding block 401 is arranged on the outer wall of the inner tube 110 to slide in the sliding groove 302; The splicing piece 100 includes splicing half rings 101 spliced ​​together, and a clamping piece that can be inserted into the corresponding annular groove 301 is provided in the splicing half ring 101. The clamping pieces are close to each other to drive the tube body units to approach each other, and the clamping pieces are close to each other to drive the inner tube 110 to be fixed in the outer tube 120; a heating piece is also provided in the splicing half ring 101 for heating the inside of the tube body unit.

[0030] In this embodiment, the acid and alkali resistant layer 210 is made of EPDM rubber material, which has excellent acid and alkali resistance. The reinforcement layer 220 is mainly used to withstand the liquid pressure in the pipe. It is made of rubber, and steel wire is embedded in the rubber to improve the strength of the reinforcement layer 220. The protective layer 230 is a polyurethane coating, which can improve the wear resistance of the inner tube 110; wherein, the base layer 240 is made of rubber material, and the high temperature resistant layer 250 is made of fluororubber material, which has high temperature resistance, so that the outer tube 120 is suitable for high temperature environment. Therefore, the inner tube 110 is embedded in the outer tube 120, so that the conveying pipe can be better suitable for the transportation of chemicals, and the conveying pipe has better acid, alkali and high temperature resistance.

[0031] In this embodiment, by setting the splicing piece 100 and the pipe body unit, the splicing piece 100 can be used to better realize the splicing between the pipe body units and better realize the installation of the delivery pipe; Among them, by setting the slider 401 and the slide groove 302, the slider 401 is located in the slide groove 302 and slides, which can better realize the sliding installation of the inner tube 110 in the outer tube 120; when it is actually used, the splicing half rings 101 can form a circular splicing piece 100 when they are connected, which can be mounted on the end of the relative tube unit. At this time, the abutting piece is inserted into the annular groove 301. By setting the annular groove 301 and the abutting piece, when the tube units are connected, the abutting piece is used to move and squeeze the side wall of the annular groove 301, so that the tube units are close to each other, and the abutting butt joint between the two is realized; Wherein, by setting the heating element, after the splicing piece 100 is spliced ​​between the pipe body units, the heating element can heat the chemicals it transports, thereby ensuring the transport effect of the transport pipe.

[0032] Combination Figure 5 and Figure 6 As shown, in this embodiment, an insertion groove 501 is provided in one end of the splicing half ring 101, a locking piece is provided in the insertion groove 501, and the other end of the splicing half ring 101 is provided with a plug-in block 502 that can be inserted into the corresponding plug-in groove 501, and the locking piece is used to fix the plug-in block 502 extending into the plug-in groove 501.

[0033] In actual use of this embodiment, when the splicing half rings 101 are spliced ​​together, the plug-in block 502 is extended into the plug-in groove 501 on the relative splicing half ring 101, and the plug-in block 502 extended into the plug-in groove 501 is fixed by a locking member, thereby better achieving the docking between the two splicing half rings 101 to realize the assembly of the splicing piece 100.

[0034] Combination Figure 7 As shown, in this embodiment, the locking member includes a moving block 510 which is relatively and slidably arranged in the plug-in groove 501, and the opposite sides of the moving block 510 protrude outward to form a protrusion 611. A rotatable first screw 520 is provided in the plug-in groove 501, and the first screw 520 is threadedly arranged to pass through the moving block 510. Recessed grooves 601 are provided at both ends of the plug-in block 502. The first screw 520 rotates to drive the moving blocks 510 to approach each other so that the protrusion 611 extends into the corresponding recessed groove 601, thereby realizing the splicing between the splicing half rings 101.

[0035] When this embodiment is actually used, the first screw rod 520 is arranged along the extension direction of the plug-in groove 501, and is rotatably installed in the plug-in groove 501 through a bearing. A thread matching the corresponding moving block 510 is arranged on the outer surface of the first screw rod 520, and the thread is symmetrical and reversely arranged, wherein the side wall of the moving block 510 slides in contact with the side wall of the plug-in groove 501, so that the moving block 510 is restricted, and then the first screw rod 520 is rotated to make the two moving blocks 510 approach or move away from each other. When the plug-in block 502 extends into the plug-in groove 501, the two moving blocks 510 are brought close to each other, so that the protrusion 611 is stuck in the recessed groove 601, and then the plug-in block 502 is fixed, thereby realizing the docking between the spliced ​​half rings 101.

[0036] Specifically, in order to better realize the rotation of the first screw 520, the two ends of the first screw 520 are recessed to form hexagonal grooves, so that in actual use, the operator can drive the first screw 520 to rotate by using an hexagonal wrench, thereby better realizing the assembly between the splicing half rings 101.

[0037] Combination Figure 8 As shown, in this embodiment, a sliding groove 503 is provided in the splicing half ring 101 along its axial direction, and a rotatable second screw 530 is provided in the sliding groove 503; The clamping member includes a clamping block 540 sliding in the annular groove 301 , a sliding block 701 sliding in the sliding groove 503 is provided on the clamping block 540 , and the second screw 530 is threadedly passed through the sliding block 701 . The second screw 530 rotates to drive the clamping block 540 to move in the annular groove 301 .

[0038] In this embodiment, the abutting block 540 is arc-shaped and can be slidably arranged in the annular groove 301. In actual use, the second screw 530 is arranged along the extension direction of the sliding groove 503 and is rotatably installed in the sliding groove 503 through a bearing. Since the side wall of the sliding block 701 slides and fits with the side wall of the sliding groove 503, the rotation of the second screw 530 can drive the sliding block 701 to move in the sliding groove 503, thereby driving the abutting block 540 to move, so that it pushes the side wall of the annular groove 301 to make the outer tube 120 approach each other, thereby pushing the two butted tube units to press against each other, so that chemicals can be transported therein; In actual use, in order to restrict the inner tube 110 in the outer tube 120, when the clamping block 540 moves to bring the outer tubes 120 closer to each other, the movement of the clamping block 540 can push the slider 401 to slide in the slide groove 302, so that the end of the inner tube 110 and the end of the outer tube 120 are aligned, so that when the tube body units are docked, the inner tube 110 is fixed in the outer tube 120, so as to avoid the inner tube 110 shaking when the chemicals are transported in the tube body unit, thereby affecting the transportation of the chemicals.

[0039] Among them, in order to enable the movement of the clamping block 540 to push the slider 401 to slide in the slide groove 302, in this embodiment, a clamping groove 505 is provided at the corresponding end of the splicing half ring 101, and a clamping block 303 that can be inserted into the corresponding clamping groove 505 is relatively provided on the side wall of the outer tube 120. The clamping block 303 is clamped in the corresponding clamping groove 505, so that the splicing half ring 101 is positioned to ensure that when it forms the splicing piece 100, the clamping block 540 is always aligned with the corresponding slider 401, so that the clamping block 540 moves to drive the inner tube 110 to be aligned with the outer tube 120, so that the tube body units are connected to form a conveying tube.

[0040] Specifically, the second screw rod 530 is rotatably installed in the sliding groove 503 through a bearing, and one end thereof extends through the side wall of the splicing half ring 101, and the extended end portion is concave to form a hexagonal groove, so that in actual use, the operator can drive the second screw rod 530 to rotate by using an hexagonal wrench, thereby better realizing the movement of the locking block 540 in the annular groove 301.

[0041] In this embodiment, in order to improve the stability of the abutting block 540 when it moves in the annular groove 301 to drive the pipe units to dock, a plurality of abutting members are distributed along the circumference of the splicing half ring 101 .

[0042] Combination Fig. 9 As shown, in this embodiment, a semi-convex ring 504 is provided in the splicing half ring 101 and at the center position, and the fastening member is used to make the end of the tube body unit abut against the side wall of the semi-convex ring 504, and a cavity 511 is provided in the semi-convex ring 504. Heat-conducting fins 512 are evenly distributed on the inner wall of the semi-convex ring 504, and the heating element is arranged in the cavity 511.

[0043] In actual use of this embodiment, when the splicing half rings 101 are butted, the half convex rings 504 are also butted to form an annular structure, so that when the abutting member drives the pipe unit to butt, the end of the pipe unit can be butted against the side wall of the annular structure to achieve a butt-butted connection between the pipe units. At the same time, in order to ensure the sealing effect during butt connection, a sealing ring is provided between the end of the pipe unit and the side wall of the annular structure. Among them, by setting the heat-conducting fins 512 and the heating element, the heating element works, and the heat-conducting fins 512 can introduce heat into the chemicals transported in the delivery pipe, so that the chemicals can be heated to meet the temperature requirements during chemical transportation, so that the delivery pipe can better transport the chemicals.

[0044] In this embodiment, the heating element includes a heating wire, and the heating wire can be used to heat the heat-conducting fins 512, so that the heat-conducting fins 512 can better heat the chemicals.

[0045] In this embodiment, the opening of the cavity 511 is arranged toward the outer side wall of the splicing half ring 101 , a blocking cover 102 is provided at the opening of the cavity 511 , and a reinforcing block 901 extending into the cavity 511 is provided on the blocking cover 102 .

[0046] In actual use, the blocking cover 102 is arranged so that the blocking cover 102 can be assembled and disassembled at the opening of the cavity 511, so that the heating element can be assembled and disassembled therein; The side wall of the cavity 511 is provided with an overlap groove, and the blocking cover 102 extends outward to form an overlap portion extending into the overlap groove, and the overlap portion is installed in the overlap groove by screws to realize the disassembly and assembly of the blocking cover 102; Among them, through the arrangement of the reinforcement block 901, in actual use, when the plug cover 102 is installed at the opening of the cavity 511, the reinforcement block 901 extends into the cavity 511 so that its side wall fits with the side wall of the cavity 511, so that the reinforcement block 901 can support the cavity 511, thereby improving the strength of the spliced ​​half ring 101 and ensuring the stability of the tight docking of the tube unit.

[0047] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. An acid, alkali and high temperature resistant chemical delivery pipe, comprising pipe units spliced ​​together by splicing pieces (100), characterized in that: The pipe body unit comprises an inner pipe (110) and an outer pipe (120), wherein the inner pipe (110) comprises, from the inside to the outside, an acid-base resistant layer (210), a reinforcement layer (220) and a protective layer (230), and the outer pipe (120) comprises, from the inside to the outside, a base layer (240) and a high temperature resistant layer (250); An annular groove (301) is arranged on the outer wall of the outer tube (120) along its circumference, a sliding groove (302) communicating with the annular groove (301) is arranged on the inner wall of the outer tube (120) along its circumference, and a sliding block (401) is arranged on the outer wall of the inner tube (110) and slides in the sliding groove (302); The splicing piece (100) comprises splicing half rings (101) spliced ​​together, wherein a clamping piece which can be inserted into a corresponding annular groove (301) is provided in the splicing half ring (101), and the clamping pieces are brought close to each other to drive the tube units to move close to each other, and the clamping pieces are brought close to each other to drive the inner tube (110) to be fixed in the outer tube (120); a heating piece for heating the inside of the tube unit is also provided in the splicing half ring (101).

2. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 1, characterized in that: An inserting groove (501) is provided in one end of the splicing half ring (101), a locking piece is provided in the inserting groove (501), and an inserting block (502) that can be inserted into the corresponding inserting groove (501) is provided at the other end of the splicing half ring (101), and the locking piece is used to fix the inserting block (502) that extends into the inserting groove (501).

3. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 2, characterized in that: The locking member comprises a moving block (510) which is relatively and slidably arranged in the plug-in groove (501); the moving block (510) has opposite side surfaces protruding outward to form a convex block (611); a rotatable first screw rod (520) is arranged in the plug-in groove (501); the first screw rod (520) is threadedly passed through the moving block (510); recessed grooves (601) are arranged at both ends of the plug-in block (502); the first screw rod (520) is rotated to drive the moving blocks (510) to approach each other so that the convex block (611) extends into the corresponding recessed groove (601), thereby realizing the splicing between the splicing half rings (101).

4. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 1, characterized in that: A sliding groove (503) is provided in the splicing half ring (101) along its axial direction, and a rotatable second screw rod (530) is provided in the sliding groove (503); The pressing member comprises a pressing block (540) which slides in the annular groove (301); a sliding block (701) which slides in the sliding groove (503) is provided on the pressing block (540); a second screw rod (530) is threadedly passed through the sliding block (701); and the second screw rod (530) is rotated to drive the pressing block (540) to move in the annular groove (301).

5. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 1, characterized in that: A plurality of fastening members are distributed along the circumference of the splicing half ring (101).

6. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 1, characterized in that: A semi-convex ring (504) is provided in the splicing semi-ring (101) and at the center position; the abutting piece is used to make the end of the tube unit abut against the side wall of the semi-convex ring (504); a cavity (511) is provided in the semi-convex ring (504); heat-conducting fins (512) are evenly distributed on the inner side wall of the semi-convex ring (504); and a heating element is provided in the cavity (511).

7. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 5, characterized in that: The opening of the cavity (511) is arranged toward the outer side wall of the splicing half ring (101), a blocking cover (102) is provided at the opening of the cavity (511), and a reinforcing block (901) extending into the cavity (511) is provided on the blocking cover (102).

8. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 6, characterized in that: The heating element includes a heating wire.

9. The acid-, alkali-, and high-temperature-resistant chemical delivery pipe according to claim 6, characterized in that: A clamping groove (505) is provided at the opposite ends of the splicing half ring (101), and a clamping block (303) that can be clamped into the corresponding clamping groove (505) is provided on the side wall of the outer tube (120).

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