Liner clamping equipment

Abstract

The present invention belongs to the technical field of liner tooling, and specifically relates to a liner clamping device. The present invention aims to solve the problem that the existing liner clamping mechanism is not compatible with liner of various diameters, resulting in low efficiency of the liner. The liner clamping device of the present invention includes a base plate and a plurality of clamping mechanisms arranged on the base plate, and the plurality of clamping mechanisms are arranged at intervals along the circumference of the base plate to enclose and form a clamping space for clamping the liner; the clamping mechanism includes a fixed plate, a clamping vertical plate, a first clamping block and a support member, the support member abuts against the end face of the liner, and the first clamping block abuts against the side of the liner to clamp and fix the liner; the clamping vertical plate, the support member and the first clamping block form a lever frame opening toward the liner, and the opening direction of the lever frame is different for liner of different diameters, so that the clamping space size formed by the plurality of clamping mechanisms is different, so that liner of different diameters can be clamped without replacing the liner clamping device, and the production efficiency is high; and the liner clamping device has a simple structure and low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of liner tooling, and particularly relates to an liner clamping device. Background Art

[0002] The inner tank is the water storage device of a water heater and must meet the requirements of heat preservation, pressure resistance, rust resistance, scale resistance, and watertightness. Once damaged, the inner tank of a water heater is difficult to repair, so its manufacturing and testing processes are also very important. During the production process, for example, the installation of the enamel, heating tube, and magnesium rod, as well as the airtightness testing, all require the inner tank to be fixed.

[0003] In the related art, the clamping port size of the liner clamping mechanism is fixed and cannot be compatible with liner diameters of various sizes. When clamping liner of different sizes, the liner clamping mechanism needs to be replaced, which not only reduces production efficiency but also results in high processing costs due to the configuration of different models of liner clamping mechanisms.

[0004] Accordingly, the art needs a new liner clamping device to solve the above problems. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing liner clamping mechanism is not compatible with liner of various diameters, resulting in low liner efficiency, the present invention provides an liner clamping device.

[0006] The liner clamping device includes: a base plate and a plurality of clamping mechanisms arranged on the base plate, and the plurality of clamping mechanisms are evenly spaced along the circumference of the base plate; the clamping mechanism includes a fixed plate, a clamping vertical plate, a first clamping block and a support member, the fixed plate is fixed to the base plate, the bottom end of the clamping vertical plate is rotatably mounted on the fixed plate, and the bottom end of the clamping vertical plate and the fixed plate have a first rotational interval; the first clamping block is fixed to the top end of the inner side surface of the clamping vertical plate, and the inner side surface of the first clamping block is used to abut against the side surface of the liner; the support member is fixed to the bottom end of the inner side surface of the clamping vertical plate, and the top surface of the support member is used to abut against the end surface of the liner, and the bottom surface of the support member and the fixed plate have a second rotational interval.

[0007] In an optional technical solution of the above-mentioned steam generating equipment, the inner side surface of the first clamping block forms a first clamping surface, a second clamping surface and a third clamping surface in sequence from top to bottom, a first angle is formed between the first clamping surface and the bottom end surface of the first clamping block, a second angle is formed between the second clamping surface and the bottom end surface of the first clamping block, a third angle is formed between the third clamping surface and the bottom end surface of the first clamping block, the third angle is smaller than the second angle, and the second angle is smaller than the first angle.

[0008] In an optional technical solution of the above-mentioned liner clamping device, the first angle is 90 degrees.

[0009] In the optional technical solution of the above-mentioned liner clamping device, the support member includes a support seat and a support block, the support seat includes a first connecting plate, a support plate and two limiting plates, the two limiting plates are fixed at intervals on both sides of the support plate, and the ends of the two limiting plates and the ends of the support plate are fixedly connected to the first connecting plate, the two limiting plates, the support plate and the first connecting plate form an installation space for installing the support block; there is a fourth angle between the support plate and the first connecting plate, and the support plate and the fixed plate have the second rotation interval; the first connecting plate is fixedly connected to the bottom end of the inner side surface of the clamping vertical plate; the top surface of the support block is used to abut the end face of the liner.

[0010] In the optional technical solution of the above-mentioned liner clamping device, the fourth angle is an obtuse angle; the top surface of the support block forms an inclined support surface, and the angle between the inclined support surface and the support plate is an acute angle; the inclined support surface protrudes from the top of the limit plate.

[0011] In the optional technical solution of the above-mentioned liner clamping device, the clamping mechanism also includes two straightening members, which are respectively fixed on the two plate surfaces of the clamping vertical plate, and the two straightening members are symmetrical about the clamping vertical plate; the straightening members are used to abut against the side of the liner.

[0012] In an optional technical solution of the above-mentioned inner liner clamping device, the straightening member includes a second connecting plate and a second clamping block, the second connecting plate includes a first plate portion and a second plate portion connected to each other, the first plate portion and the second plate portion have a fifth angle, the first plate portion is fixedly connected to the plate surface of the clamping vertical plate, and the inner side surface of the second plate portion is fixedly connected to the second clamping block; the inner side surface of the second clamping block is used to abut against the side surface of the inner liner.

[0013] In an optional technical solution of the above-mentioned liner clamping device, the second clamping block is inclined toward the clamping vertical plate; and the inner side surface of the second clamping block has the same shape as the inner side surface of the first clamping block.

[0014] In an optional technical solution of the above-mentioned inner liner clamping device, the outer side surface of the clamping vertical plate protrudes outward to form a counterweight portion, and when the support member is not in contact with the end surface of the inner liner, the counterweight portion is in contact with the fixed plate.

[0015] In the optional technical solution of the above-mentioned liner clamping device, two spaced-apart mounting plates are provided on the fixing plate, and coaxial first hinge holes are provided on the two mounting plates; the clamping plate is located between the two mounting plates, and a second hinge hole is provided on the clamping plate; the clamping mechanism also includes a hinge shaft and two bushings, and the hinge shaft is passed through the first hinge hole and the second hinge hole; the bushing is installed between the second hinge hole and the hinge shaft, and the two bushings are respectively located at both ends of the second hinge hole; a retaining ring is provided at the outer end of the bushing, and the retaining ring is located between the mounting plate and the clamping plate.

[0016] It will be understood by those skilled in the art that the liner clamping device of the present invention comprises a base plate and a plurality of clamping mechanisms arranged on the base plate, the plurality of clamping mechanisms being arranged at intervals along the circumference of the base plate to enclose and form a clamping space for clamping the liner; wherein the clamping mechanism comprises a fixed plate, a clamping vertical plate, a first clamping block and a support member, the fixed plate being fixed to the base plate, the clamping vertical plate being rotatably mounted on the fixed plate, the support member and the first clamping block being respectively mounted on the upper and lower ends of the inner side surface of the clamping vertical plate, the clamping vertical plate and the support members and the first clamping block fixed at both ends form a lever frame opening toward the liner, the rotation point of the clamping vertical plate relative to the fixed plate forms a fulcrum, the bottom end of the clamping vertical plate and the fixed plate have a first rotation interval, and the bottom surface of the support member and the fixed plate have a second rotation interval.

[0017] In this way, when the inner liner is placed in the clamping space, the end face of the inner liner abuts the support member. Under the action of the inner liner's gravity, the support member moves toward the second rotational interval, causing the first clamping block to rotate toward the side of the inner liner and abut against the side of the inner liner, thereby clamping and securing the inner liner. Inner liner diameters vary, and the angles of rotation of the clamping plate relative to the fixed plate vary. The opening of the lever frame faces different directions, resulting in different clamping spaces formed by the multiple clamping mechanisms. This allows for clamping of inner liner diameters, eliminating the need to replace the inner liner clamping equipment, improving production efficiency, and simplifying the structure of the inner liner clamping equipment, resulting in low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following describes an alternative embodiment of the inner container clamping device of the present invention with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic structural diagram of the inner liner clamping device provided by an embodiment of the present invention when clamping an inner liner;

[0020] Figure 2 Schematic diagram of the structure of the inner container clamping device provided by an embodiment of the present invention;

[0021] Figure 3 This is a front view of the liner clamping device provided by an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the clamping mechanism of the inner liner clamping device provided by an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the principle of the lever frame of the liner clamping device provided by an embodiment of the present invention;

[0024] Figure 6 This is a front view of a first clamping block of the liner clamping device provided in an embodiment of the present invention;

[0025] Figure 7 is a schematic structural diagram of a support base provided by an embodiment of the present invention;

[0026] Figure 8 is a structural schematic diagram of a support block provided by an embodiment of the present invention;

[0027] Figure 9 is a top view of the clamping plate, the first clamping block and the straightening member provided in an embodiment of the present invention;

[0028] Figure 10 is a structural schematic diagram of a second connecting plate provided in an embodiment of the present invention;

[0029] Figure 11 is a structural schematic diagram of a second clamping block provided by an embodiment of the present invention;

[0030] Figure 12 1 is a schematic structural diagram of a clamping vertical plate provided by an embodiment of the present invention;

[0031] Figure 13 1 is a schematic structural diagram of a shaft sleeve provided by an embodiment of the present invention;

[0032] Figure 14 It is a structural schematic diagram of the inner liner clamping device provided by an embodiment of the present invention, which is provided with a protective cover.

[0033] In the accompanying drawings: 10: bottom plate; 11: circular groove; 20: clamping mechanism; 210: lever frame; 30: inner liner; 31: magnesium rod mounting tube; 32: water pipe mounting tube; 33: cylinder body; 34: head; 40: protective cover; 41: top plate; 42: side panel;

[0034] 100: fixed plate; 110: installation vertical plate;

[0035] 210: Clamping plate; 211: Second hinge hole; 212: Counterweight; 213: Second inclined surface; 214: Third inclined surface; 215: Fourth inclined surface;

[0036] 220: first clamping block; 221: first clamping surface; 222: second clamping surface; 223: third clamping surface;

[0037] 230: support member; 231: support seat; 2311: first connecting plate; 2312: support plate; 2313: limit plate; 232: support block; 2321: inclined support surface;

[0038] 240: straightening member; 241: second connecting plate; 2411: first plate portion; 2412: second plate portion; 242: second clamping block; 2421: first inclined surface; 243: reinforcing plate;

[0039] 250: articulated shaft; 260: bushing; 261: retaining ring. DETAILED DESCRIPTION

[0040] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the embodiments of the present invention and are not intended to limit the scope of protection of the embodiments of the present invention. Those skilled in the art may make adjustments as needed to adapt to specific application scenarios.

[0041] Secondly, it should be noted that in the description of the embodiments of the present invention, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0042] Furthermore, it should be noted that, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0043] In the related art, the clamping port size of the liner clamping mechanism is fixed, and each liner clamping mechanism can only clamp an liner of one diameter and is not compatible with liner of multiple diameters. When it is necessary to clamp an liner of different sizes, it is necessary to replace it with another type of liner clamping mechanism. Not only is the production efficiency low, but the configuration of different types of liner clamping mechanisms also leads to high processing costs.

[0044] In view of this, an embodiment of the present invention provides a new inner liner clamping device, which uses a clamping mechanism made of a lever principle to clamp inner liner of different sizes. The clamping mechanism is driven by the inner liner's own gravity, achieving the clamping of inner liner of different diameters.

[0045] The following describes optional technical solutions for the liner clamping device according to an embodiment of the present invention in conjunction with the accompanying drawings. Figure 1This is a schematic structural diagram of the inner liner clamping device of an embodiment of the present invention when clamping the inner liner; Figure 2 It is a structural schematic diagram of the inner liner clamping device according to an embodiment of the present invention.

[0046] First, combine Figure 1 In the embodiment of the present invention, the inner liner 30 held and fixed by the inner liner clamping device may include a barrel 33 and end caps 34 located at both ends of the barrel 33. The end caps 34 are arc-shaped half shells and are welded to the barrel 33 to form the inner liner 30. A magnesium rod mounting tube 31 may be welded to the barrel 33 to accommodate the magnesium rod; two water pipe mounting tubes 32 may also be welded to the barrel 33 to connect to the water inlet and outlet pipes, respectively.

[0047] like Figure 1 and Figure 2 As shown, the liner clamping device of an embodiment of the present invention includes a base plate 10 and a plurality of clamping mechanisms 20 arranged on the base plate 10, wherein the base plate 10 provides an installation space for the clamping mechanism 20, and the liner clamping device can be installed on other devices of the liner assembly line. The base plate 10 can be a circular plate, a square plate, etc. A circular groove 11 is provided on the base plate 10 to avoid the end of the liner 30 and prevent the end of the liner 30 from colliding with the base plate 10. The plurality of clamping mechanisms 20 are evenly spaced around the circumference of the base plate 10 to form a clamping space for clamping the liner, clamping the liner 30 from multiple directions, and improving the stability and balance of the clamping. Among them, the clamping mechanisms 20 can be provided in three, four, etc., which are not limited here. For example, the base plate 10 is a square plate, and four clamping mechanisms 20 are provided, and the four clamping mechanisms 20 are respectively located at the four top corners of the square base plate 10.

[0048] It should be understood that the circumferential direction of the base plate 10 should be understood in a broad sense. When the base plate 10 is a circular plate, the circumferential direction of the base plate 10 is the circumferential direction of the circular plate; when the base plate 10 is a polygon, the circumferential direction of the base plate 10 is the direction of the side length of the polygon. In practice, the multiple clamping mechanisms 20 form a circular clamping space to clamp the inner container 30. The multiple clamping mechanisms 20 are evenly spaced along the circumference of the circular groove 11 provided on the base plate 10.

[0049] Figure 3 This is a front view of the liner clamping device of the present invention; Figure 4 This is a schematic structural diagram of the clamping mechanism of the inner container clamping device of the present invention. Figure 5 It is a schematic diagram of the principle of the lever frame of the liner clamping device provided in an embodiment of the present invention.

[0050] Combine Figures 2 to 4The clamping mechanism 20 provided in an embodiment of the present invention includes a fixed plate 100, a clamping vertical plate 210, a first clamping block 220 and a support member 230. The fixed plate 100 is fixed to the base plate 10. For example, the fixed plate 100 is fixed to the base plate 10 by screws. The fixed plate 100 can be a rectangular plate. A screw is provided at each of the four top corners of the rectangular fixed plate 100 to fix it to the base plate 10, and the connection is stable and reliable.

[0051] The clamping plate 210 is arranged perpendicular to the fixed plate 100, and its bottom end is rotatably mounted on the fixed plate 100. For example, the clamping plate 210 and the fixed plate 100 are directly connected through a rotating shaft, or a hinge is provided between the bottom end of the clamping plate 210 and the fixed plate 100, so that the clamping plate 210 can rotate relative to the fixed plate 100. Figure 3 There is a first rotational interval L1 between the bottom end of the clamping vertical plate 210 and the fixed plate 100. Specifically, there is a first rotational interval L1 between the bottom end of the outer side of the clamping vertical plate 210 and the fixed plate 100, which provides space for the clamping vertical plate 210 to rotate relative to the fixed plate 100, thereby avoiding interference between the clamping vertical plate 210 and the fixed plate 100.

[0052] The first clamping block 220 is fixed to the top of the inner side of the clamping vertical plate 210, and the inner side of the first clamping block 220 is used to abut against the side of the inner liner 30. Specifically, Figure 1 The inner side of the first clamping block 220 abuts against the side of the barrel 33 of the inner liner 30. The first clamping block 220 can be an elastic block, such as a rubber block or a polyurethane block, which can achieve elastic abutment with the side of the inner liner 30, thereby avoiding abrasion of the inner liner 30 due to rigid abutment and having a certain elastic deformation space to be compatible with inner liner of more sizes, thereby expanding the application range of the inner liner clamping device.

[0053] It should be noted here that in the embodiment of the present invention, the directional word "inside" refers to the side facing the clamping space, that is, the side facing the inner liner 30; the directional word "outside" refers to the side facing away from the clamping space, that is, the side facing away from the inner liner 30.

[0054] The support member 230 is fixed to the bottom end of the inner side of the clamping vertical plate 210, that is, there is a gap between the support member 230 and the first clamping block 220. The top surface of the support member 230 is used to abut against the end surface of the inner container 30. Figure 1 The top surface of the support member 230 is used to abut against the head 34 of the inner container 30. Figure 3 The bottom surface of the support member 230 and the fixed plate 100 have a second rotation interval L2, which provides space for the clamping vertical plate 210 to rotate relative to the fixed plate 100 and avoids interference between the clamping vertical plate 210 and the fixed plate 100.

[0055] The embodiment of the present invention does not limit the specific values of the first rotation interval L1 and the second rotation interval L2. Optionally, the first rotation interval L1 is smaller than the second rotation interval L2. For example, the first rotation interval L1 is 9.60 mm and the second rotation interval L2 is 24.44 mm.

[0056] Through the above settings, combined with Figure 5 The clamping plate 210 and the first clamping blocks 220 and the supporting members 230 provided at both ends of the clamping plate 210 form a lever frame 201 facing the inner container opening. The rotation connection between the clamping plate 210 and the fixed plate 100 is the fulcrum of the lever frame 201 (i.e. Figure 5 The lever frame 201 is a U-shaped structure. When clamping the inner liner 30, the head 34 abuts against the top surface of the support member 230, and under the action of the inner liner 30's own gravity, the support member 230 is pressed down, so that the second rotation interval L2 is reduced, and the support member 230 drives the clamping plate 210 and the first clamping block 220 to rotate inward, so that the first clamping block 220 abuts against the side of the barrel 33, thereby clamping the inner liner 30 between the multiple clamping mechanisms 20. For inner liners 30 with different diameters, the rotation angles of the clamping plate 210 relative to the fixed plate 100 are different, and the opening directions of the lever frame 201 are different, for example Figure 5 In the figure, the lever frame 201 shown by the solid line and the lever frame 201 shown by the dotted line have different opening directions, so that the clamping space sizes formed by the multiple clamping mechanisms 20 are different, so that inner liner 30 of different diameters can be clamped without replacing the inner liner clamping device, which is conducive to high production efficiency; and the inner liner clamping device of the embodiment of the present invention has a simple structure and low cost.

[0057] Figure 6 This is a front view of the first clamping block of the inner container clamping device provided by an embodiment of the present invention. Figure 6 As shown, in some specific implementations, the inner side surface of the first clamping block 220 forms a first clamping surface 221, a second clamping surface 222 and a third clamping surface 223 from top to bottom, and a first angle α1 is formed between the first clamping surface 221 and the bottom end surface of the first clamping block 220, a second angle α2 is formed between the second clamping surface 222 and the bottom end surface of the first clamping block 220, and a third angle α3 is formed between the third clamping surface 223 and the bottom end surface of the first clamping block 220, and the third angle α3 is smaller than the second angle α2, and the second angle α2 is smaller than the first angle α1.

[0058] The embodiment of the present invention provides clamping surfaces with different inclination angles on the inner side surface of the first clamping block 220, thereby more stably contacting with the inner liner 30 of different diameters. When the size of the inner liner 30 is small, the opening of the lever frame 201 formed by the clamping vertical plate 210, the first clamping block 220 and the support member 230 is large, for example Figure 5The lever frame 201 is shown by the dotted line. At this time, the second clamping surface 222 or the third clamping surface 223 abuts against the side of the inner liner 30. When the diameter of the inner liner 30 is small, the opening of the lever frame 201 formed by the clamping vertical plate 210, the first clamping block 220 and the support member 230 is small, for example Figure 5 The lever frame 201 is shown by the solid line. At this time, the first clamping surface 221 is in contact with the side surface of the inner container 30.

[0059] It should be noted that Figure 5 The lever frame 201 is only schematically illustrated in the figure, and the specific structure of the inner side of the first clamping block 220 is not shown. The specific structure of the inner side of the first clamping block 220 can be referred to. Figure 6 .

[0060] Of course, the number of clamping surfaces provided on the inner side surface of the first clamping block 220 is not limited to the first clamping surface 221, the second clamping surface 222, and the third clamping surface 223 described above. Four or five clamping surfaces may also be provided on the inner side surface of the first clamping block 220. Those skilled in the art may adjust the number of clamping surfaces based on actual needs and the height of the first clamping block 220. It is understood that the angles between the multiple clamping surfaces provided on the inner side surface of the first clamping block 220 and the bottom surface of the first clamping block 220 decrease from top to bottom.

[0061] The embodiment of the present invention does not limit the angle between the clamping surface of the first clamping block 220 and its bottom end surface. Optionally, the first angle α1 is 90 degrees, and the second angle α2 and the third angle α3 are both acute angles less than 90 degrees. For example, the second angle α2 is 81.75 degrees, and the third angle α3 is 74.36 degrees. Exemplarily, the height H of the first clamping block 220 is 60 mm, and the height H1 of the first clamping surface 221, the height H2 of the second clamping surface 222, and the height H3 of the third clamping surface 223 are all 20 mm, to avoid the clamping surface area being too small and affecting the clamping stability.

[0062] Figure 7 is a schematic structural diagram of a support base provided by an embodiment of the present invention; Figure 8 It is a structural schematic diagram of a support block provided by an embodiment of the present invention.

[0063] Combine Figure 7 and Figure 8The support member 230 provided in this embodiment of the present invention includes a support base 231 and a support block 232. The support base 231 includes a first connecting plate 2311, a support plate 2312, and two limiting plates 2313. The two limiting plates 2313 are fixed at intervals on both sides of the support plate 2312, and the ends of the two limiting plates 2313 and the ends of the support plate 2312 are fixedly connected to the first connecting plate 2311. Optionally, the first connecting plate 2311 and the support plate 2312 are integrally formed as a single piece, and the two limiting plates 2313 are welded to both sides of the support plate 2312. In this way, the two limiting plates 2313, the support plate 2312, and the first connecting plate 2311 form an installation space for installing the support block 232.

[0064] There is a fourth angle δ between the support plate 2312 and the first connecting plate 2311. The fourth angle δ can be an obtuse angle. For example, the fourth angle δ is 105°. At this time, the second rotation interval L2 is the interval between the support plate 2312 and the fixed plate 100. The first connecting plate 2311 is fixedly connected to the bottom end of the inner side surface of the clamping vertical plate 210. For example, the first connecting plate 2311 and the clamping vertical plate 210 are connected by screws, and the connection is simple and stable. The top end of the first connecting plate 2311 protrudes from the limit plate 2313, which is convenient for fixed connection with the clamping vertical plate 210 to prevent the screws from affecting the installation of the support block 232.

[0065] The support block 232 is accommodated in the installation space formed by the two limiting plates 2313, the support plate 2312 and the first connecting plate 2311. For example, the support block 232 is respectively bonded to the limiting plates 2313, the support plate 2312 and the first connecting plate 2311. For another example, the support block 232 is interference-connected with the installation space to ensure that the support block 232 is fixed in the installation space and does not move.

[0066] The top surface of the support block 232 is used to abut against the end surface of the inner liner 30. Optionally, an elastic block of the support block 232, such as a rubber block or polyurethane block, can achieve elastic abutment with the end surface of the inner liner 30. This not only prevents wear and tear on the inner liner 30 caused by rigid abutment, but also provides a certain elastic deformation space to accommodate inner liner sizes and expand the application range of the inner liner clamping device. Furthermore, the elastic support block 232 can also act as a shock absorber, improving the stability of the inner liner clamping.

[0067] Typically, the end face of the liner 30 is arc-shaped. In order to better abut against the end face of the liner 30, Figure 8The top surface of support block 232 forms an inclined support surface 2321. The angle γ between inclined support surface 2321 and support plate 2312 is acute. That is, the angle γ between inclined support surface 2321 and the bottom end surface of support block 232 is acute. For example, the angle γ between inclined support surface 2321 and the bottom end surface of support block 232 is 24°. In this embodiment, by providing inclined support surface 2321 on the top surface of support block 232, the contact area between support block 232 and the end surface of inner liner 30 is increased, thereby improving the stability of inner liner clamping.

[0068] To prevent the inner liner 30 and the limiting plate 2313 from contacting and causing wear between them, the inclined support surface 2321 optionally protrudes from the top of the limiting plate 2313 to ensure that the support block 232 abuts against the inner liner 30. Optionally, the top edge of the limiting plate 2313 is inclined relative to the supporting plate 2312, and the inclination angle is the same as the angle γ between the inclined support surface 2321 and the supporting plate 2312.

[0069] Continue to refer to Figure 2 、 Figure 3 as well as Figure 4 In order to improve the stability and reliability of the inner liner clamping, the clamping mechanism 20 of this embodiment also includes two straightening members 240, which are respectively fixed on the two plate surfaces of the clamping vertical plate 210, and the two straightening members 240 are symmetrical about the clamping vertical plate 210; the straightening members 240 are used to abut against the side of the inner liner 30.

[0070] It should be noted that the clamping vertical plate 210 is arranged perpendicular to the fixed plate 100, and its side facing the inner liner 30 is the inner side, and its side facing away from the inner liner 30 is the outer side. The inner side and outer side of the clamping vertical plate 210 are both sides in the thickness direction; the two sides of the clamping vertical plate 210 are plate surfaces, and the area of the plate surface is larger than the area of the inner side of the clamping vertical plate 210.

[0071] In the embodiment of the present invention, a straightening member 240 is respectively provided on both sides of the clamping vertical plate 210 to abut against the side of the inner liner 30, thereby increasing the abutment area between the clamping mechanism 20 and the side of the inner liner 30, improving the stability and reliability of clamping the inner liner 30, and preventing the inner liner 30 from tilting; and, the two straightening members 240 are symmetrically provided on both sides of the clamping vertical plate 210, improving the balance of the abutment, and further preventing the inner liner 30 from tilting.

[0072] Figure 9 1 is a top view of the clamping plate, the first clamping block and the straightening member provided in an embodiment of the present invention. Figure 10 is a structural diagram of a second connecting plate provided in an embodiment of the present invention, Figure 11 It is a structural schematic diagram of the second clamping block provided in an embodiment of the present invention.

[0073] Combine Figure 9, the straightening member 240 of this embodiment includes a second connecting plate 241 and a second clamping block 242. Figure 10 The second connecting plate 241 includes a first plate portion 2411 and a second plate portion 2412 connected to each other, wherein the first plate portion 2411 and the second plate portion 2412 have a fifth angle λ. The first plate portion 2411 is fixedly connected to the plate surface of the clamping plate 210. For example, the first plate portion 2411 is welded to the plate surface of the clamping plate 210. For another example, the first plate portion 2411 and the clamping plate 210 are connected by screws. The inner side surface of the second plate portion 2412 is fixedly connected to the second clamping block 242. For example, the inner side surface of the second plate portion 2412 is bonded to the outer side surface of the second clamping block 242. For another example, the second plate portion 2412 and the second clamping block 242 are connected by screws. In this way, there is a gap between the second clamping block 242 and the first clamping block 220. In this way, the two second clamping blocks 242 and the one first clamping block 220 form three abutting positions with the inner liner 30, thereby improving the stability of the inner liner clamping.

[0074] It is understandable that the two second clamping blocks 242 and the one first clamping block 220 are located on the same circumference, so that they can abut against the side surface of the inner container 30 at the same time.

[0075] The inner side of the second clamping block 242 is used to abut against the side of the inner container 30. Specifically, Figure 1 The inner side of the second clamping block 242 abuts against the side of the barrel 33 of the inner liner 30. The second clamping block 242 can be an elastic block, such as a rubber block, a polyurethane block, etc., which can achieve elastic abutment with the side of the inner liner 30, thereby avoiding wear and tear of the inner liner 30 due to rigid abutment. It also has a certain elastic deformation space to be compatible with inner liner sizes and expand the application range of the inner liner clamping device. Optionally, the second clamping block 242 and the first clamping block 220 are both polyurethane blocks, which are both elastic and low-cost.

[0076] The inner side shape of the second clamping block 242 is the same as the inner side shape of the first clamping block 220. Figure 11 The inner side surface of the second clamping block 242 forms a first clamping surface 221, a second clamping surface 222 and a third clamping surface 223 from top to bottom, and a first angle α1 is formed between the first clamping surface 221 and the bottom end surface of the first clamping block 220, a second angle α2 is formed between the second clamping surface 222 and the bottom end surface of the first clamping block 220, and a third angle α3 is formed between the third clamping surface 223 and the bottom end surface of the first clamping block 220. The third angle α3 is smaller than the second angle α2, and the second angle α2 is smaller than the first angle α1.

[0077] Optionally, a portion of the top surface of the second clamping block 242 is tilted downward to form a first inclined surface 2421. The angle α4 between the first inclined surface 2421 and the bottom surface of the second clamping block 242 is an obtuse angle. For example, the angle α4 between the first inclined surface 2421 and the bottom surface of the second clamping block 242 is 153.43°. For example, the height H of the second clamping block 242 is 60 mm, the height H2 of the second clamping surface 222 and the height H3 of the third clamping surface 223 are both 20 mm, the height H1 of the first clamping surface 221 is 10 mm, and the height H4 of the first inclined surface 2421 is 10 mm. The provision of the first inclined surface 2421 in this embodiment facilitates reducing the volume of the second clamping block 242.

[0078] Continue to refer to Figure 9 In some implementations, the second clamping block 242 is tilted toward the clamping plate 220, which helps to straighten the inner liner 30 and improve the stability of the inner liner 30. In this embodiment of the present invention, the second clamping block 242 abuts against the side of the inner liner 30 to mainly straighten it; the first clamping block 220 abuts against the side of the inner liner 30 to clamp it.

[0079] Continue to refer to Figure 10 In order to improve the structural strength of the straightening member 240, the straightening member 240 also includes a reinforcing plate 243. The reinforcing plate 243 is triangular and fixedly connected to the first plate portion 2411 and the second plate portion 2412 respectively to enhance the structural strength and stability of the straightening member 240.

[0080] Figure 12 This is a schematic diagram of the structure of the clamping vertical plate provided by an embodiment of the present invention, combined with Figure 12 In some embodiments, the outer surface of the clamping plate 210 protrudes outward to form a counterweight portion 212. The counterweight portion 212 positions the center of gravity of the clamping plate 210, the first clamping block 220, the straightening member 240, and the support member 230 at the lower portion of the outer side of the connection between the clamping plate 210 and the fixed plate 100. This allows the counterweight portion 212 to abut against the fixed plate 100 when the support member 230 is not in contact with the end surface of the inner liner 30. That is, when the inner liner clamping device of the embodiment of the present invention is not clamping the inner liner 30, under the action of the counterweight portion 212, the clamping plate 210 and the first clamping block 220, the support member 230, and the straightening member 240 fixed thereto rotate outward relative to the fixed plate 100, causing the bottom end of the clamping plate 210 to abut against the fixed plate 100. At this time, the first rotation interval L1 is zero. Such an arrangement allows the clamping mechanism 20 to be opened outward, making it easier to install the inner liner 30 . There is no need to manually open the clamping mechanism 30 to install the inner liner 30 , which is beneficial to improving production efficiency.

[0081] Optionally, the clamping plate 210 is polygonal, with both its inner and outer sides being vertical, its top surface being a horizontal plane perpendicular to the inner side, and its bottom surface being an arcuate surface. A fourth inclined surface 215 is provided between the outer side and the top surface of the clamping plate 210, and a second inclined surface 213 and a third inclined surface 214 are provided between the outer side and the arcuate bottom surface of the clamping plate 210. The angle between the second inclined surface 213 and the horizontal plane is β1, and the angle between the third inclined surface 214 and the horizontal plane is β2, where β2 is greater than β1. This prevents the clamping plate 210 from abutting against the fixed plate 100 and affecting the rotation of the clamping plate 210.

[0082] Continue to refer to Figures 2 to 4 In some implementations, the clamping mechanism 20 further includes a hinge shaft 250, and the fixed plate 100 and the clamping plate 210 are connected via the hinge shaft 250. Specifically, the fixed plate 100 is provided with two spaced-apart mounting plates 110, and the two mounting plates 110 are provided with a coaxial first hinge hole; the clamping plate 210 is located between the two mounting plates 110, and is combined with the first hinge hole. Figure 12 The clamping plate 210 is provided with a second hinge hole 211, and the hinge shaft 250 is inserted into the first hinge hole and the second hinge hole 211, so that the clamping plate 210 can rotate relative to the fixed plate 100. Of course, both ends of the hinge shaft 250 extend outside the first hinge hole and are provided with limit members to prevent the hinge shaft 250 from falling out of the first hinge hole and the second hinge hole 211.

[0083] The gap between the clamping plate 210 and the mounting plate 110 is prone to accommodating the oxide scale on the surface of the inner liner 30, causing the clamping mechanism 20 to get stuck, affecting production efficiency. To this end, the clamping mechanism 20 of the embodiment of the present invention also includes a sleeve 260, which is installed between the second hinge hole 211 and the hinge shaft 250, and the two sleeves 260 are respectively located at both ends of the second hinge hole 211. Figure 13 , Figure 13 This is a schematic diagram of the structure of a shaft sleeve provided in an embodiment of the present invention. A retaining ring 261 is provided at the outer end of the shaft sleeve 260. Positioned between the mounting plate 110 and the clamping plate 210, retaining ring 261 blocks the intrusion of oxide scale from the surface of the inner liner 30, thereby reducing the failure rate of the clamping mechanism 20 and improving production efficiency. Optionally, the shaft sleeve 260 can be a copper sleeve, which can also prevent wear on the articulated shaft 250.

[0084] Figure 14 This is a schematic diagram of the structure of the inner container clamping device provided by the embodiment of the present invention, which is provided with a protective cover. Figure 14The inner liner clamping device provided in an embodiment of the present invention further includes a protective cover 40, which is fixedly connected to the bottom plate 10 by screws. The protective cover 40 includes a top plate 41 and a side panel 42 provided at the bottom end of the top plate 41. The top plate 41 is spaced apart from the bottom plate 10 and is provided with an opening to expose the clamping mechanism 20 and the clamping space enclosed by the clamping mechanism 20. By providing the protective cover 40, this embodiment further prevents oxide scale and other impurities on the surface of the inner liner 30 from entering the hinge shaft 250 and causing the clamping mechanism 20 to become stuck.

[0085] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A liner clamping device, characterized in that: include: A bottom plate and a plurality of clamping mechanisms disposed on the bottom plate, wherein the plurality of clamping mechanisms are evenly spaced along the circumference of the bottom plate; The clamping mechanism includes a fixing plate, a clamping vertical plate, a first clamping block and a support member, the fixing plate is fixed to the bottom plate, the bottom end of the clamping vertical plate is rotatably mounted on the fixing plate, and the bottom end of the clamping vertical plate and the fixing plate have a first rotational interval; the first clamping block is fixed to the top end of the inner side surface of the clamping vertical plate, and the inner side surface of the first clamping block is used to abut against the side surface of the inner container; the support member is fixed to the bottom end of the inner side surface of the clamping vertical plate, and the top surface of the support member is used to abut against the end surface of the inner container, and the bottom surface of the support member and the fixing plate have a second rotational interval; The inner side surface of the first clamping block forms a first clamping surface, a second clamping surface, and a third clamping surface in sequence from top to bottom, a first angle is formed between the first clamping surface and the bottom end surface of the first clamping block, a second angle is formed between the second clamping surface and the bottom end surface of the first clamping block, and a third angle is formed between the third clamping surface and the bottom end surface of the first clamping block, the third angle is smaller than the second angle, and the second angle is smaller than the first angle; The clamping mechanism further includes two straightening members, which are respectively fixed on the two plate surfaces of the clamping vertical plate, and the two straightening members are symmetrical about the clamping vertical plate; the straightening members are used to abut against the side surfaces of the inner liner.

2. The liner clamping device according to claim 1, characterized in that: The first angle is 90 degrees.

3. The liner clamping device according to claim 1, characterized in that: The support member includes a support seat and a support block, and the support seat includes a first connecting plate, a support plate and two limiting plates, the two limiting plates are fixed at intervals on both sides of the support plate, and the ends of the two limiting plates and the ends of the support plate are fixedly connected to the first connecting plate, the two limiting plates, the support plate and the first connecting plate form an installation space for installing the support block; there is a fourth angle between the support plate and the first connecting plate, and the support plate and the fixed plate have the second rotation interval; the first connecting plate is fixedly connected to the bottom end of the inner side surface of the clamping vertical plate; the top surface of the support block is used to abut the end surface of the inner tank.

4. The liner clamping device according to claim 3, characterized in that: The fourth angle is an obtuse angle; the top surface of the support block forms an inclined support surface, and the angle between the inclined support surface and the support plate is an acute angle; the inclined support surface protrudes from the top of the limiting plate.

5. The liner clamping device according to any one of claims 1 to 4, characterized in that: The straightening member includes a second connecting plate and a second clamping block, the second connecting plate includes a first plate portion and a second plate portion connected to each other, the first plate portion and the second plate portion have a fifth angle, the first plate portion is fixedly connected to the plate surface of the clamping vertical plate, and the inner side surface of the second plate portion is fixedly connected to the second clamping block; the inner side surface of the second clamping block is used to abut against the side surface of the inner liner.

6. The liner clamping device according to claim 5, characterized in that: The second clamping block is inclined toward the clamping vertical plate; the inner side surface of the second clamping block has the same shape as the inner side surface of the first clamping block.

7. The liner clamping device according to any one of claims 1 to 4, characterized in that: The outer side of the clamping vertical plate protrudes outward to form a counterweight portion, and when the support member is not in contact with the end surface of the inner container, the counterweight portion is in contact with the fixing plate.

8. The liner clamping device according to any one of claims 1 to 4, characterized in that: The fixing plate is provided with two spaced-apart mounting plates, each of which is provided with a coaxial first hinge hole; the clamping plate is located between the two mounting plates, and the clamping plate is provided with a second hinge hole; The clamping mechanism also includes a hinge shaft and two sleeves, the hinge shaft is inserted into the first hinge hole and the second hinge hole; the sleeve is installed between the second hinge hole and the hinge shaft, and the two sleeves are respectively located at the two ends of the second hinge hole; a retaining ring is provided at the outer end of the sleeve, and the retaining ring is located between the mounting plate and the clamping plate.

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