Automatic glaze blowing device and system for the lower inner wall of the enamel glaze of the inner tank of the American water heater

Abstract

An automatic glaze blowing device and system for the enamel glaze at the lower part of the inner wall of the inner tank of an American water heater, wherein the glaze blowing device comprises: a rotary drive source configured to provide a rotary force; a radial support rod, arranged perpendicularly to the output shaft of the rotary drive source; a guide member, arranged at the free end of the radial support rod, used to cooperate with the lower circle of the inner tank of the American water heater, so that the guide member rotates along the lower circle of the inner tank with the axis of the output shaft as the axis center; an air nozzle, arranged close to the guide member, connected to an external compressed air source, used to blow off the enamel glaze at a predetermined height on the lower edge of the inner wall of the inner tank. The invention has the advantages of good glaze removal, easy control of glaze removal height, high production effect and low labor intensity.

Description

Technical Field

[0001] The invention relates to an automatic enamel blowing device and system for the enamel material at the lower part of the inner wall of the inner tank of an American water heater. Background Art

[0002] Existing American water heater tanks, such as Figure 1 and Figure 2 As shown, it generally includes an upper cover 1000, a middle barrel 2000 and a lower cover 3000. During manufacturing, the upper cover 1000 and the middle barrel 2000 are first welded, and then the welded inner liner is vertically sent to the sandblasting room through a conveyor line to sandblast the inner wall of the inner liner to remove impurities. The inner liner after sandblasting is then cleaned and dried. The dried inner liner is then coated with a layer of enamel glaze 2100 on the inner wall of the upper cover 1000 and the middle barrel 2000 by an enamel glaze spraying device, and then hung on the wet enamel drying line to The enamel glaze 2100 on the inner wall is dried. In order to facilitate welding with the lower cover 3000, a part of the outer edge of the lower cover 3000 must also be a part without enamel glaze 3100, so that the two can be connected through the welding layer 3200. Therefore, people need to remove the enamel glaze 2100 of the lower edge 2200 of the inner wall of the middle barrel 2000 with a predetermined height of generally 9mm±2mm. In the prior art, the method of removing this part of the enamel glaze is to manually scrape it clean with an iron sheet, and finally send the inner tank into a sintering furnace for sintering.

[0003] This method of manually scraping the edges to remove the glaze after drying has the following problems: first, it is difficult to scrape the glaze cleanly; second, it is difficult to control the height of the glaze to be scraped off; third, the work efficiency is low; fourth, the labor intensity is high, especially in the hot summer, which is unbearable for workers and will lead to personnel turnover. Summary of the invention

[0004] In order to overcome the above problems, the invention provides a device and system for automatically blowing enamel glaze on the lower inner wall of the inner barrel of an American water heater, which has good glaze removal, easy-to-control glaze removal height, high production effect and low labor intensity.

[0005] The technical solution of the present invention is to provide an automatic enamel blowing device for the lower part of the inner wall of the inner tank of an American water heater, comprising:

[0006] a rotational drive source configured to provide a rotational force;

[0007] A radial support rod, arranged perpendicularly to the output shaft of the rotary drive source;

[0008] A guide member is provided at the free end of the radial support rod and is used to cooperate with the lower circle of the inner tank of the American water heater so that the guide member rotates along the lower circle of the inner tank with the axis of the output shaft as the axis center;

[0009] An air nozzle is arranged adjacent to the guide member and is connected to an external compressed air source for blowing off the enamel material at a predetermined height on the lower edge of the inner wall of the inner barrel.

[0010] As an improvement to the present invention, the present invention further comprises a vertical force application mechanism, which acts on the radial support rod, so that the free end of the guide member or the radial support rod is closely attached to the lower circle of the barrel in the inner tank.

[0011] As an improvement to the present invention, the vertical force applying mechanism is a first cylinder, the lower end of the cylinder body of the first cylinder is obliquely connected to the output shaft, and the push rod of the first cylinder is obliquely connected to the radial support rod.

[0012] As an improvement to the present invention, the end of the radial support rod away from the guide member is connected to the upper end of the output shaft through a connecting member, and a through hole is provided in the connecting member, and the radial support rod passes through the through hole and extends out of the connecting member; a sliding groove is provided in the portion of the radial support rod close to the guide member, and the upper end of the push rod of the first cylinder is movably connected to the sliding groove through a connecting block and an adjusting screw.

[0013] As an improvement to the present invention, the present invention further comprises a horizontal force applying mechanism, which is arranged at one end of the radial support rod away from the guide member, so that the guide member is kept against the lower edge of the barrel wall in the inner container.

[0014] As an improvement to the present invention, the horizontal force applying mechanism is a spring, the spring is sleeved on the radial support rod, and applies horizontal force to the radial support rod via a baffle fixedly connected to the radial support rod.

[0015] As an improvement to the present invention, the horizontal force applying mechanism is a second cylinder, and the second cylinder applies horizontal force to the radial support rod.

[0016] As an improvement to the present invention, the guide member is a following wheel, the following wheel is connected to the radial support rod via a bearing, the following wheel has a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are arranged opposite to each other to form a V-shaped annular groove.

[0017] As an improvement to the present invention, the guide member is an arc-shaped piece, and the arc-shaped piece abuts against the lower edge of the inner wall of the barrel in the inner container.

[0018] As an improvement to the present invention, the radial support rod is a double-tube structure, wherein the diameter of one tube section is smaller than the diameter of the other tube section, the small diameter tube is sleeved in the large diameter tube, and the two tubes can move relative to each other to change the radial length of the radial support rod.

[0019] As an improvement to the present invention, the present invention also includes an air collecting ring, which includes an air collecting ring body and an air collecting ring swivel, the air collecting ring body is fixedly connected to the mounting seat via a connecting seat, the air collecting ring swivel is rotatably and sealedly connected to the air collecting ring body, and an air guide groove is formed between the air collecting ring body and the air collecting ring swivel, the air nozzle is connected to the air guide groove via the air collecting ring swivel; the compressed air source is connected to the air guide groove via the air collecting ring body.

[0020] As an improvement to the present invention, the rotation driving source is a pneumatic motor or an electric motor.

[0021] As an improvement to the present invention, the predetermined height is selected between 7 mm and 11 mm.

[0022] The present invention also provides an automatic glaze blowing system for the enamel material on the lower inner wall of the inner barrel of an American water heater, comprising the automatic glaze blowing device for the enamel material on the lower inner wall of the inner barrel of an American water heater.

[0023] The present invention adopts a rotary drive source configured to provide a rotary force; a radial support rod is arranged perpendicular to the output shaft of the rotary drive source; a guide member is arranged at the free end of the radial support rod and is used to cooperate with the lower circle of the inner tank barrel of the American water heater, so that the guide member rotates along the lower circle of the inner tank barrel with the axis of the output shaft as the axis; an air nozzle is arranged close to the guide member and is connected to an external compressed air source, and is used to blow off the enamel glaze at a predetermined height on the lower edge of the inner wall of the inner tank barrel. In this way, the present invention has the advantages of good glaze removal, easy control of glaze removal height, high production effect and low labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the existing American water heater inner tank;

[0025] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of an embodiment of the glaze blowing device of the present invention;

[0027] Figure 4 yes Figure 3 An enlarged structural diagram of the accompanying wheel in FIG.

[0028] Figure 5 It is a schematic diagram of the plan structure of an embodiment of the glaze blowing system of the present invention;

[0029] Figure 6 yes Figure 5 BB cross-sectional structure diagram;

[0030] Figure 7 yes Figure 5 Schematic diagram of the three-dimensional structure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0032] See also Figure 3 and Figure 4 , Figure 3 and Figure 4 Disclosed is an automatic enamel blowing device for the lower inner wall of the inner tank of an American water heater, comprising:

[0033] A rotational driving source 1 is configured to provide a rotational force; the rotational driving source 1 in the present invention may be a pneumatic motor or an electric motor;

[0034] A radial support rod 2 is arranged perpendicular to the output shaft 11 of the rotary drive source 1;

[0035] The guide member 21 is provided at the free end of the radial support rod 2 and is used to cooperate with the lower circle 81 of the inner tank of the American water heater inner tank 8. Figure 5 , so that the guide member 21 rotates along the lower circle 81 of the inner tank barrel with the axis 111 of the output shaft 11 as the axis center;

[0036] The air nozzle 22 is arranged adjacent to the guide member 21 and connected to an external compressed air source, and is used to blow off the enamel glaze at a predetermined height on the lower edge of the inner wall of the inner tank, and the enamel glaze after blowing off falls into the glaze receiving groove 9 for recovery. The predetermined height in the present invention can be selected between 7mm and 11mm, and can be changed according to the requirements of the bottom cover welding height.

[0037] Preferably, the present invention further comprises a vertical force applying mechanism 3, which acts on the radial support rod 2 to keep the guide member 21 or the free end of the radial support rod 2 in close contact with the lower circle 81 of the inner tank barrel to ensure that the predetermined height is within a selectable range.

[0038] Preferably, the vertical force-applying mechanism 3 is a first cylinder, the lower end of the cylinder body 31 of the first cylinder is obliquely connected to the output shaft 11, and the push rod 32 of the first cylinder is obliquely connected to the radial support rod 2. The upward component of force generated by the oblique push rod 32 can keep the guide member 21 or the free end of the radial support rod 2 close to the lower circle 81 of the inner barrel.

[0039] Preferably, the end of the radial support rod 2 away from the guide member 21 is connected to the upper end of the output shaft 11 through a connecting member 23, and a through hole is provided in the connecting member 23, and the radial support rod 2 passes through the through hole and extends out of the connecting member 23; a sliding groove 24 is provided in the portion of the radial support rod 2 close to the guide member 21, and the upper end of the push rod 32 of the first cylinder is movably connected to the sliding groove 24 through a connecting block 33 and an adjusting screw 34; when the radial support rod 2 is to be retracted, the adjusting screw 34 is loosened to move the radial support rod 2 toward the output shaft 11, and after it is moved into place, the adjusting screw 34 is tightened. In order to maintain an upward holding force on the radial support rod 2, and at the same time, when the lower circle 81 of the inner liner barrel may be deformed and the radial support rod 2 needs to move toward or away from the output shaft 11, the pressure of the first cylinder should not be too large or too small, and it is best to be selected between 0.05Mpa and 0.1Mpa.

[0040] Preferably, the present invention further comprises a horizontal force applying mechanism 4, which is arranged at one end of the radial support rod 2 away from the guide member 21, so that the guide member 21 is kept against the lower edge of the barrel wall in the inner container.

[0041] Preferably, the horizontal force-applying mechanism 4 may be a spring, which is sleeved on the radial support rod 2 and applies horizontal force to the radial support rod 2 via a baffle fixedly connected to the radial support rod 2; that is, when the inner diameter of the middle barrel lower circle 81 is deformed, the radial support rod 2 may produce appropriate inward or outward movement, and when the radial support rod 2 moves inward, the spring stores force, and conversely, the spring releases force, thereby achieving the purpose of keeping the guide member 21 against the lower edge of the barrel wall in the inner tank.

[0042] Preferably, the horizontal force-applying mechanism 4 is a second cylinder not shown, and the second cylinder applies horizontal force to the radial support rod 2; when the predetermined pressure of the second cylinder is utilized, such as 0.05Mpa-0.1Mpa, the flexibility thereof is utilized to apply horizontal force to the radial support rod 2, so as to achieve the purpose of keeping the guide member 21 against the lower edge of the barrel wall in the inner tank.

[0043] In this embodiment, the guide member 21 is a following wheel, which is connected to the radial support rod 2 via a bearing. The following wheel has a first inclined surface 211 and a second inclined surface 212 , which are arranged opposite to each other to form a V-shaped annular groove 213 .

[0044] Preferably, the guide member 21 may also be an arc-shaped piece (not shown), and the arc-shaped piece rests against the lower edge of the barrel wall in the inner container.

[0045] Preferably, the radial support rod 2 is a double-tube structure, wherein the diameter of one tube section is smaller than the diameter of the other tube section, the small diameter tube is sleeved in the large diameter tube, and the two tubes can move relative to each other to change the radial length of the radial support rod 2.

[0046] Preferably, the present invention also includes an air collecting ring 5, which includes an air collecting ring body 51 and an air collecting ring swivel 52, wherein the air collecting ring body 51 is fixedly connected to the mounting seat 7 via a connecting seat 6, and the air collecting ring swivel 52 is rotatably and sealedly connected to the air collecting ring body 51, and an air guide groove is formed between the air collecting ring body 51 and the air collecting ring swivel 52, and the air nozzle 22 is connected to the air guide groove via the air collecting ring swivel 52; the compressed air source is connected to the air guide groove via the air collecting ring body 51.

[0047] See also Figure 5-Figure 7 The present invention also provides an automatic glaze blowing system for the enamel material on the lower inner wall of the inner barrel of an American-style water heater, comprising the automatic glaze blowing device 10 for the enamel material on the lower inner wall of the inner barrel of an American-style water heater.

[0048] Specifically, the automatic glaze blowing system for the enamel glaze at the lower part of the inner wall of the barrel of the American-style water heater inner tank comprises a frame 100, a clamping mechanism 200 for clamping the American-style water heater inner tank 8 and an automatic glaze blowing device 10 are provided at the lower part of the frame 100, and a conveying chain 300 for conveying the American-style water heater inner tank 8 coated with enamel glaze on the inner wall is provided at the upper part of the frame 100. When the American-style water heater inner tank 8 is conveyed into the frame 100 by the conveying chain 300, the conveying chain 300 stops moving, and at this time the clamping mechanism 200 clamps the American-style water heater inner tank 8. Figure 3 and Figure 4 The automatic glaze blowing device 10 shown blows the enamel material at a predetermined height along the lower edge of the inner wall of the inner tank 8 of the American water heater into the glaze receiving groove 9 located below the automatic glaze blowing device 10 through the air nozzle 22 .

[0049] In the present invention, the clamping mechanism 200 includes a pair of first guide rail pairs 210 arranged at a predetermined distance, the first guide rail 211 of the first guide rail pair 210 is fixedly connected to the frame 100, the first sliders 212 of the first guide rail pair 210 are connected through a first clamping rod 213, a first support rod 2131 and a second support rod 2133 are arranged at a predetermined distance on the first clamping rod 213, a first clamping wheel 2132 is arranged at the free end of the first support rod 2131, and a second clamping wheel 2134 is arranged at the free end of the second support rod 2133; the middle part of the first clamping rod 213 is connected to the top rod 2141 of the clamping cylinder 214 fixed on the frame 100; a second guide rail pair 220 is provided at a predetermined distance relative to the first guide rail pair 210, and the second guide rail 221 of the second guide rail pair 220 is connected to the frame 100 is fixedly connected, the second sliders 222 of the second guide rail pair 220 are connected by a second clamping rod 223, a third support rod 2231 and a fourth support rod 2233 are provided on the second clamping rod 223 at a predetermined distance, a third clamping wheel 2232 is provided at the free end of the third support rod 2231, and a fourth clamping wheel 2234 is provided at the free end of the fourth support rod 2233; a third clamping rod 230 is provided on the first clamping rod 213, when the clamping cylinder 214 drives the first clamping rod 213 to move, the first clamping rod 213 makes the second clamping rod 223 move in the opposite direction through the third clamping rod 230 and the synchronous reversing mechanism 240, so that the first clamping wheel 2132, the second clamping wheel 2134, the third clamping wheel 2232 and the fourth clamping wheel 2234 clamp the American water heater tank 8 at the same time.

[0050] The synchronous reversing mechanism 240 includes a third guide rail pair 241, an active spur rack 242, a spur gear 243 and a driven spur rack 244. The third guide rail 2411 of the third guide rail pair 241 is connected to the frame 100, the third slider 2412 of the third guide rail pair 241 is connected to the third clamping rod 230, the active spur rack 242 is arranged on the third slider 2412, the driven spur rack 244 is arranged on the second slider 222, and the spur gear 243 is arranged between the active spur rack 242 and the driven spur rack 244, and is meshed with the active spur rack 242 and the driven spur rack 244.

[0051] A lifting mechanism 250 is also provided on the frame 100, and the lifting mechanism 250 includes a lifting motor 251, a belt winding mechanism 252, and a fourth guide rail pair 253 provided on the four legs 110 of the frame 100. The belt 254 of the belt winding mechanism 252 is connected to the clamping mechanism 200, so that the clamping mechanism 200 and the automatic glaze blowing device 10 provided on the clamping mechanism 200 can move up and down relative to the American water heater inner tank 8.

[0052] Of course, the present invention can also be designed as a structure in which the clamping mechanism 200 and the automatic glaze blowing device 10 are stationary, and the lifting mechanism 250 drives the American water heater inner tank 8 to move up and down. The specific structure will not be discussed in detail.

[0053] When the system is in use, the conveyor chain 300 automatically conveys the American water heater liner 8 after the inner wall is sprayed to the edge blowing station of the frame 100, the lifting mechanism 250 rises to a predetermined height position, the clamping mechanism 200 clamps the American water heater liner 8 to the center position and fixes it immobile, the first cylinder is ventilated and extended (the air supply pressure is controlled by a precision pressure regulating valve between 0.05Mpa-0.1Mpa), so that the V-shaped groove of the accompanying wheel is completely in contact with the lower circle 81 of the liner, the rotary drive source 1 rotates (the speed of the rotary drive source 1 is adjustable), and the air cylinder is ventilated and extended (the air supply pressure is controlled by a precision pressure regulating valve between 0.05Mpa-0.1Mpa), so that the V-shaped groove of the accompanying wheel is completely in contact with the lower circle 81 of the liner, and the rotary drive source 1 rotates (the speed of the rotary drive source 1 is adjustable). The nozzle 22 is ventilated (opened or closed by the solenoid valve), so that the compressed air is blown out through the nozzle 22 (the nozzle is made of copper material). At this time, the nozzle 22 rotates along the lower edge of the inner wall of the inner tank, and at the same time blows the enamel glaze at a predetermined distance from the lower edge of the inner wall of the inner tank into the glaze receiving groove 9; after the glaze blowing is completed, the first cylinder is cut off and retracted, the rotating drive source 1 is stopped and the blowing solenoid valve of the nozzle 22 is closed, the clamping mechanism 200 is reset to open the clamping, and the lifting mechanism 250 is lowered to the standby position, and the American water heater tank 8 is released to carry out the next cycle.

[0054] In the present invention, the compressed air of the first cylinder and the compressed air of the air nozzle 22 are converted by rotating the air collecting ring 5, so as to ensure that the rotary driving source 1 can rotate continuously without causing entanglement problems in the pipeline.

[0055] The present invention can realize the simultaneous operation of multiple stations, thus greatly improving the production efficiency.

[0056] Without departing from the concept of the invention, all equivalent changes made by applying the contents of the invention description and drawings are considered to be included in the scope of the claims of the invention.

Claims

1. An automatic enamel blowing device for the lower inner wall of the inner barrel of an American water heater, characterized in that: include: A rotational drive source (1) configured to provide a rotational force, wherein the rotational drive source (1) is a pneumatic motor or an electric motor; A radial support rod (2) is arranged perpendicular to the output shaft (11) of the rotary drive source (1); A guide member (21) is provided at the free end of the radial support rod (2) and is used to cooperate with the lower circle of the inner tank of the American water heater so that the guide member (21) rotates along the lower circle of the inner tank with the axis (111) of the output shaft (11) as the axis; A vertical force-applying mechanism (3) acts on the radial support rod (2) to make the free end of the guide member (21) or the radial support rod (2) closely contact the lower circle of the inner tank; The vertical force applying mechanism (3) is a first cylinder, the lower end of the cylinder body (31) of the first cylinder is obliquely connected to the output shaft (11), and the push rod (32) of the first cylinder is obliquely connected to the radial support rod (2); An end of the radial support rod (2) away from the guide member (21) is connected to the upper end of the output shaft (11) via a connecting member (23), and a through hole is provided in the connecting member (23), and the radial support rod (2) passes through the through hole and protrudes out of the connecting member (23); a sliding groove (24) is provided in a portion of the radial support rod (2) close to the guide member (21), and an upper end of the push rod (32) of the first cylinder is movably connected to the sliding groove (24) via a connecting block (33) and an adjusting screw (34); a horizontal force-applying mechanism (4), the horizontal force-applying mechanism (4) being arranged at an end of the radial support rod (2) away from the guide member (21), so that the guide member (21) is kept against the lower edge of the barrel wall of the inner container; The horizontal force applying mechanism (4) is a spring, the spring is sleeved on the radial support rod (2), and applies horizontal force to the radial support rod (2) via a baffle fixedly connected to the radial support rod (2); The guide member (21) is a following wheel, the following wheel is connected to the radial support rod (2) via a bearing, the following wheel has a first inclined surface (211) and a second inclined surface (212), the first inclined surface (211) and the second inclined surface (212) are arranged opposite to each other to form a V-shaped annular groove (213); The air nozzle (22) is arranged adjacent to the guide member (21) and is connected to an external compressed air source, and is used to blow off the enamel material at a predetermined height on the lower edge of the inner wall of the inner barrel.

2. The automatic enamel blowing device for the lower inner wall of the inner barrel of an American-style water heater according to claim 1 is characterized in that: The radial support rod (2) is replaced by a double tube structure, wherein the diameter of one tube section is smaller than the diameter of the other tube section, the small diameter tube is sleeved inside the large diameter tube, and the two tubes move relative to each other to change the radial length of the radial support rod (2).

3. The automatic enamel blowing device for the lower inner wall of the inner tank of an American-style water heater according to claim 1 or 2, characterized in that: It also comprises an air collecting ring (5), the air collecting ring (5) comprising an air collecting ring body (51) and an air collecting ring rotating body (52), the air collecting ring body (51) being fixedly connected to a mounting seat (7) via a connecting seat (6), the air collecting ring rotating body (52) being rotatably and sealingly connected to the air collecting ring body (51), and an air guide groove being formed between the air collecting ring body (51) and the air collecting ring rotating body (52), the air nozzle (22) being connected to the air guide groove via the air collecting ring rotating body (52); and the compressed air source being connected to the air guide groove via the air collecting ring body (51).

4. An automatic enamel blowing system for the lower inner wall of the inner barrel of an American water heater, characterized in that: The invention discloses an automatic enamel blowing device for the lower part of the inner wall of the inner tank of an American-style water heater comprising the enamel glaze material according to any one of claims 1 to 3.

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