A cooling water jacket structure for kiln and its manufacturing method

Abstract

The present invention relates to the technical field of kiln cooling water jackets, and in particular to a kiln cooling water jacket structure and a manufacturing method thereof; comprising a kiln, a kiln inner jacket sleeved on the outer periphery of the kiln furnace, and a kiln outer jacket sleeved on the outer periphery of the kiln inner jacket. The kiln inner jacket and the kiln outer jacket enclose a cooling water jacket for circulating coolant; the cooling water jacket is connected with a liquid inlet and a liquid outlet, and a plurality of water retaining ring plates with openings are fixedly inserted inside the cooling water jacket along the length direction of the cooling water jacket, and each water retaining ring plate blocks the vertical section of the cooling water jacket so that the coolant can only flow from the opening of the water retaining ring plate; the outer wall of the kiln inner jacket and the kiln outer jacket are connected and fixed by a plurality of connectors; the present invention significantly lengthens the flow path of the coolant, eliminates the dead angle of water flow in the cooling water jacket, and has a better cooling effect; makes the cooling water jacket more resistant to water pressure, and greatly improves the cooling effect and service life of the cooling water jacket.

Description

Technical Field

[0001] The invention relates to the technical field of kiln cooling water jackets, and in particular to a kiln cooling water jacket structure and a manufacturing method thereof. Background Art

[0002] In the prior art, the cooling water jacket structure of industrial kilns is as follows Figure 1 As shown, a rectangular inner sleeve 1 and a rectangular outer sleeve 2 made of metal are sleeved together along the length direction of the furnace, and the rectangular inner sleeve 1 and the rectangular outer sleeve 2 together enclose a cooling water jacket 3. The material conveying line of the industrial kiln passes through the interior of the rectangular inner sleeve 1, and cooling water enters the cooling water jacket from the water inlet 4 and then flows out from the water outlet 5, so as to cool the calcined materials in the industrial kiln; the structural disadvantages of the prior art are: first, only gravity natural drainage can be adopted in the cooling water jacket, and the cooling effect is poor; second, if the cooling water jacket adopts pressure drainage, the rectangular inner sleeve and the rectangular outer sleeve cannot withstand the large water pressure and are prone to bulging and deformation; third, the cooling water directly passes through the interior of the cooling water jacket, the water flow path is short, and there are water flow dead corners (such as Figure 1 The water flow speed at B and C is very slow), and the cooling effect of the cooling water jacket is uneven. A cooling water jacket structure for a kiln and a manufacturing method thereof are proposed to solve the problems existing in the prior art. Summary of the invention

[0003] The purpose of the present invention is to provide a cooling water jacket structure for a kiln and a manufacturing method thereof, so as to solve the problems in the prior art that cooling water directly passes through the interior of the cooling water jacket, the water flow path is short, there are dead corners for water flow, and the cooling effect of the water jacket is uneven.

[0004] The technical solution of the present invention is: a cooling water jacket structure for a kiln, comprising a kiln inner jacket sleeved on the outer periphery of a kiln furnace, and a kiln outer jacket sleeved on the outer periphery of the kiln inner jacket, wherein the kiln inner jacket and the kiln outer jacket enclose a cooling water jacket for circulating coolant; the cooling water jacket is connected with a liquid inlet and a liquid outlet.

[0005] A plurality of water retaining ring plates with openings are fixedly inserted inside the cooling water jacket along the length direction of the cooling water jacket, and each of the water retaining ring plates blocks the vertical section of the cooling water jacket so that the coolant flows from the opening of the water retaining ring plate; the openings of the plurality of water retaining ring plates are arranged in a spiral shape as a whole, so that the coolant in the cooling water jacket flows forward in a spiral shape; or, the openings of each two adjacent water retaining ring plates are arranged in reverse order, so that the coolant in the cooling water jacket flows forward in an S shape.

[0006] Preferably, the outer wall of the kiln inner shell and the kiln outer shell are connected and fixed by a plurality of connecting pieces, each of the connecting pieces passes through the kiln outer shell, and the connecting pieces are sealed to the kiln outer shell.

[0007] Preferably, the vertical cross-sections of the kiln inner sleeve and the kiln outer sleeve are rectangular, and the water retaining ring plate is U-shaped;

[0008] The openings of every four adjacent water retaining ring plates are arranged in sequence clockwise or counterclockwise; or, the openings of every two adjacent water retaining ring plates are arranged in the opposite direction at 180°.

[0009] Preferably, the opening of the water retaining ring plate is opening downward, opening to the left, opening upward, opening to the right, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the left, opening upward, opening to the right, opening downward, and opening to the left, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the right, opening downward, opening to the left, and opening upward, and circulating in sequence; or, the opening of the water retaining ring plate is opening downward, opening to the right, opening upward, opening to the left, and opening upward, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the right, opening upward, opening to the left, and opening downward, and circulating in sequence; or, the opening of the water retaining ring plate is opening upward, opening to the left, opening downward, opening to the right, opening upward, opening to the left, and opening downward, and circulating in sequence; or, the opening of the water retaining ring plate is opening upward, opening to the left, opening downward, opening to the right, and opening upward, and circulating in sequence;

[0010] Alternatively, the opening of the water retaining ring plate is opened downwards and then opened upwards, in a cycle; alternatively, the opening of the water retaining ring plate is opened upwards and then opened downwards, in a cycle; alternatively, the opening of the water retaining ring plate is opened to the left and then opened to the right, in a cycle; alternatively, the opening of the water retaining ring plate is opened to the right and then opened to the left, in a cycle.

[0011] Preferably, the connecting piece is a pin or a strip; one end of each connecting piece is welded to the outer wall of the kiln inner sleeve, and the other end is fully welded to the kiln outer sleeve.

[0012] Preferably, the inner ring end surface of the water retaining ring plate is welded to the outer surface of the inner sleeve of the kiln.

[0013] Preferably, the front and rear ends of each cooling water jacket structure are annular flanges, which allow the sintered products to pass through and connect the kiln inner jacket and the kiln outer jacket to seal the cooling water jacket; adjacent cooling water jacket structures are fixedly connected by the flanges.

[0014] The present invention also provides a method for manufacturing a cooling water jacket structure for a kiln, using the above cooling water jacket structure, comprising:

[0015] S1. Spot welding is performed at a predetermined position on the outer surface of the kiln inner sleeve having a rectangular vertical cross section by processing equipment to determine the welding position of the connector on the outer surface of the kiln inner sleeve;

[0016] S2. Welding a plurality of connectors corresponding to predetermined positions on the outer surface of the inner sleeve of the kiln, and welding a plurality of water retaining ring plates to the outer surface of the inner sleeve of the kiln at predetermined positions;

[0017] S3. Through holes are welded at positions corresponding to a plurality of connectors on the kiln jacket by processing equipment, the kiln jacket is put on the kiln inner jacket, and each connector is inserted into the through hole on the kiln jacket, and each connector passes through the end of the through hole and protrudes from the outer surface of the kiln jacket;

[0018] S4. Fully weld the connectors on the kiln outer shell; complete the welding operation on the kiln outer shell where welding is required.

[0019] Preferably, in step S3, the method of putting the kiln outer sleeve on the kiln inner sleeve and inserting each connecting piece into the through hole on the kiln outer sleeve is:

[0020] The entire kiln outer shell with through holes welded is evenly divided into two plates, which are respectively recorded as an upper outer shell plate and a lower outer shell plate, and the upper outer shell plate and the lower outer shell plate are bent into a trumpet-shaped groove; the upper outer shell plate includes an upper top plate, an upper left plate and an upper right plate located on both sides of the upper top plate, and the upper outer shell plate is sleeved on the upper end of the kiln inner shell, and the connecting pieces on the top surface of the kiln inner shell are first inserted into the through holes of the upper top plate one by one, and then the upper left plate is pushed toward the kiln inner shell with a tool, so that the connecting pieces at the upper end of the left side of the kiln inner shell are inserted into the through holes of the upper left plate one by one; and then the upper right plate is pushed toward the kiln inner shell with a tool, so that the connecting pieces at the upper end of the right side of the kiln inner shell are inserted into the through holes of the upper left plate one by one;

[0021] The lower outer sleeve plate includes a lower bottom plate, a lower left side plate and a lower right side plate located on both sides of the lower bottom plate. The lower outer sleeve plate is sleeved on the lower end of the kiln inner sleeve. First, the connecting pieces on the bottom surface of the kiln inner sleeve are inserted into the through holes of the lower bottom plate one by one. Then, the lower left side plate is pushed toward the kiln inner sleeve with a tool so that the connecting pieces at the lower end of the left side of the kiln inner sleeve are inserted into the through holes of the lower left side plate one by one. Then, the lower right side plate is pushed toward the kiln inner sleeve with a tool so that the connecting pieces at the lower end of the right side of the kiln inner sleeve are inserted into the through holes of the lower left side plate one by one.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) The present invention provides a cooling water jacket structure for a kiln, wherein a plurality of water retaining ring plates with openings are fixedly inserted inside the cooling water jacket along the length direction of the cooling water jacket, and each water retaining ring plate blocks the vertical section of the cooling water jacket so that the coolant flows through the opening of the water retaining ring plate; the openings of the plurality of water retaining ring plates are arranged in a spiral shape as a whole, so that the coolant in the cooling water jacket flows forward in a spiral shape; or, the openings of each two adjacent water retaining ring plates are arranged in reverse order, so that the coolant in the cooling water jacket flows forward in an S shape; the problem that the cooling water directly passes through the interior of the cooling water jacket, the water flow path is short, and there are water flow dead corners is solved; the present invention significantly lengthens the flow path of the coolant, and the cooling effect is better.

[0024] (2) A method for manufacturing a cooling water jacket structure for a kiln in the present invention, wherein the outer wall of the kiln inner jacket and the kiln outer jacket are connected and fixed by a plurality of pins, one end of each pin is welded to the outer wall of the kiln inner jacket and the other end is fully welded to the kiln outer jacket, and each pin passes through a through hole of the kiln outer jacket, and the end of the pin protrudes from the outer surface of the kiln outer jacket; since the distance between the outer surface of the kiln inner jacket and the inner surface of the kiln outer jacket is several tens of mm, which is very narrow, the method for manufacturing a cooling water jacket structure for a kiln in the present invention solves the problem of how to fix and insert the U-shaped water retaining ring plate into the interior of the cooling water jacket. The invention solves the problem of how to fix multiple pins between the outer surface of the inner sleeve and the outer sleeve of the kiln, the problem of how to put the larger outer sleeve of the kiln on the pins on the inner sleeve of the kiln, the problem of how to ensure that the welding points of the pins on the outer surface of the inner sleeve of the kiln correspond to the hole positions of the openings on the outer sleeve of the kiln, etc., and solves many difficult problems. Before using the structure of the invention, the cooling water jacket can only withstand a water pressure of 0.06Mpa. With the structure of the invention, the cooling water jacket can withstand a water pressure of 0.35-0.60Mpa, which greatly improves the cooling effect and service life of the cooling water jacket. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1 It is a schematic diagram of the structure of the cooling water jacket of an industrial kiln in the prior art;

[0027] Figure 2 It is a structural schematic diagram of the two cooling water jacket structures connected in this embodiment;

[0028] Figure 3 This is a schematic diagram of the assembly structure of the first water retaining ring plate with its opening facing downward and the cooling water jacket when the cooling water flows forward in a spiral shape in this embodiment;

[0029] Figure 4 This is a schematic diagram of the assembly structure of the second water retaining ring plate with its opening facing left and the cooling water jacket when the cooling water flows forward in a spiral shape in this embodiment;

[0030] Figure 5 This is a schematic diagram of the assembly structure of the third water retaining ring plate with its opening facing upward and the cooling water jacket when the cooling water flows forward in a spiral shape in this embodiment;

[0031] Figure 6 This is a schematic diagram of the assembly structure of the fourth water retaining ring plate with its opening facing right and the cooling water jacket when the cooling water flows forward in a spiral shape in this embodiment;

[0032] Figure 7 This is a schematic diagram of the structure in which a plurality of pins are welded to predetermined positions on the outer surface of the inner sleeve of the kiln according to this embodiment;

[0033] Figure 8 It is a structural schematic diagram of the upper outer sleeve of this embodiment being sleeved on the pin at the upper end of the kiln inner sleeve;

[0034] Fig. 9 It is a structural schematic diagram of the lower outer sleeve plate according to this embodiment being sleeved on the pin at the lower end of the kiln inner sleeve;

[0035] Fig.10 This is a schematic diagram of the structure after the pins are fully welded to the kiln outer shell and the welding of the required welding parts on the kiln outer shell is completed as described in this embodiment.

[0036] Among them: 10. kiln inner sleeve, 11. kiln outer sleeve, 12. cooling water jacket, 13. liquid inlet, 14. liquid outlet, 15. water retaining ring plate, 16. flange, 17. pin, 18. upper outer sleeve plate, 19. upper top plate, 20. upper left side plate, 21. upper right side plate, 22. lower outer sleeve plate, 23. lower bottom plate, 24. lower left side plate, 25. lower right side plate. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with specific embodiments:

[0038] In the description of the invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0039] like Figure 2As shown, a cooling water jacket structure for a kiln comprises a kiln inner jacket 10 sleeved on the outer periphery of the kiln furnace, and a kiln outer jacket 11 sleeved on the outer periphery of the kiln inner jacket 10; limited by the diameter of the liquid inlet 13 and the pressure of the water, the distance H between the outer surface of the kiln inner jacket 10 and the inner surface of the kiln outer jacket 11 is several tens of mm (such as Figure 3 As shown); the kiln inner sleeve 10 and the kiln outer sleeve 11 enclose a cooling water jacket 12 for circulating coolant. In this embodiment, the coolant is cooling water; the cooling water jacket 12 is connected with a liquid inlet 13 and a liquid outlet 14. In order to solve the problem that the cooling water directly passes through the interior of the cooling water jacket 12, the water flow path is short, and there are dead corners for water flow, the present application is fixedly inserted with a plurality of water retaining ring plates 15 with openings in the interior of the cooling water jacket 12 along the length direction of the cooling water jacket 12, each water retaining ring plate 15 blocks the vertical section of the cooling water jacket 12, so that the coolant flows from the opening of the water retaining ring plate 15; the openings of the plurality of water retaining ring plates 15 are arranged in a spiral shape as a whole, so that the coolant in the cooling water jacket 12 flows forward in a spiral shape; or, the openings of each two adjacent water retaining ring plates 15 are arranged in reverse, so that the coolant in the cooling water jacket 12 flows forward in an S shape. The front and rear ends of each cooling water jacket structure are annular flanges 16, which allow the sintered products to pass through and connect the kiln inner jacket 10 and the kiln outer jacket 11 to seal the cooling water jacket 12; adjacent cooling water jacket structures are fixedly connected by the flanges 16.

[0040] Specifically, when the cooling water flows forward in a spiral shape, the openings of each of the four adjacent water retaining ring plates 15 are arranged in a clockwise or counterclockwise manner; there are four clockwise arrangements of the openings between each of the four adjacent water retaining ring plates 15, and there are four counterclockwise arrangements of the openings; specifically as follows: the openings of the water retaining ring plates 15 are opened downward, opened to the left, opened upward, and opened to the right, in turn, in a cycle, that is, in each cooling water jacket structure, starting from the first water retaining ring plate 15 to the rear, the first water retaining ring plate 15 opens downward (such as Figure 3 As shown), the second water retaining ring plate 15 opens to the left (as shown Figure 4 As shown), the third water retaining ring plate 15 opens upward (as shown Figure 5 As shown), the fourth water retaining ring plate 15 opens to the right (as shown Figure 6As shown); it should be noted that if the number of water retaining ring plates 15 in a cooling water jacket structure is less than four, then they can be arranged sequentially from the first water retaining ring plate 15 to the rear. For example, if there are three, the first water retaining ring plate 15 opens downward, the second water retaining ring plate 15 opens to the left, and the third water retaining ring plate 15 opens upward; if the number of water retaining ring plates 15 in a cooling water jacket structure exceeds four, every four water retaining ring plates 15 are arranged backward in a cycle according to the sequence in this method, and the extra water retaining ring plates 15 are circulated starting from the opening method of the first water retaining ring plate 15. For example, if there are seven, the first water retaining ring plate 15 opens downward, the second water retaining ring plate 15 opens to the left, the third water retaining ring plate 15 opens upward, the fourth water retaining ring plate 15 opens to the right, the fifth water retaining ring plate 15 opens downward, the sixth water retaining ring plate 15 opens to the left, and the seventh water retaining ring plate 15 opens upward; the seven methods below are the same The principle is not repeated here; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the left, opening to the top, opening to the right, opening to the bottom, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the top, opening to the right, opening to the bottom, opening to the left, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the right, opening to the top, opening to the left, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the right, opening to the top, opening to the left, and opening to the bottom, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the right, opening to the top, opening to the left, and opening to the bottom, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the top, opening to the left, opening to the bottom, opening to the right, and opening to the top, and circulating in sequence; or, the opening of the water retaining ring plate 15 is, in sequence, opening to the left, opening to the bottom, opening to the right, and opening to the top, and circulating in sequence.

[0041] Specifically, when the coolant is made to flow forward in an S shape, the openings of every two adjacent water retaining ring plates 15 are arranged 180° in reverse. There are four arrangements of the openings of every two adjacent water retaining ring plates 15 arranged 180° in reverse, as follows: the openings of the water retaining ring plates 15 are opened downward, opened upward, and circulated in sequence, that is, the first water retaining ring plate 15 opens downward, and the second water retaining ring plate 15 opens upward. It should be noted that if the number of water retaining ring plates 15 in a cooling water jacket structure is an even number, every two water retaining ring plates 15 are arranged backward in a cycle according to the sequence in this method, for example, if there are four, then the first water retaining ring plate 15 opens downward, the second water retaining ring plate 15 opens upward, the third water retaining ring plate 15 opens downward, and the fourth water retaining ring plate 15 opens upward; if the number of water retaining ring plates 15 in a cooling water jacket structure is an odd number When there are a number of water retaining ring plates 15, every two water retaining ring plates 15 are arranged backward in a cycle according to the sequence in this method, and the extra one is consistent with the opening direction of the first water retaining ring plate 15. For example, if there are five water retaining ring plates 15, the first water retaining ring plate 15 opens downward, the second water retaining ring plate 15 opens upward, the third water retaining ring plate 15 opens downward, the fourth water retaining ring plate 15 opens upward, and the fifth water retaining ring plate 15 opens downward. The following three methods are the same and will not be repeated here. Alternatively, the openings of the water retaining ring plates 15 are opened upward and downward in sequence, and circulate in sequence; alternatively, the openings of the water retaining ring plates 15 are opened to the left and opened to the right in sequence, and circulate in sequence; alternatively, the openings of the water retaining ring plates 15 are opened to the right and opened to the left in sequence, and circulate in sequence. In the present invention, by designing a plurality of water retaining ring plates 15, the coolant flows forward in a spiral or S-shaped manner in the cooling water jacket 12, thereby avoiding cooling dead corners, increasing the flow path of the coolant, and achieving a better cooling effect.

[0042] In the present embodiment, the vertical cross-sections of the kiln inner sleeve 10 and the kiln outer sleeve 11 are rectangular, and the water retaining ring plate 15 is U-shaped; in the present embodiment, since the distance between the outer surface of the kiln inner sleeve 10 and the inner surface of the kiln outer sleeve 11 is 60 mm, which is very narrow, how to fix the U-shaped water retaining ring plate 15 inside the cooling water jacket 12 is a problem that needs to be solved.

[0043] In the present application, in order to prevent the kiln inner sleeve 10 and the kiln outer sleeve 11 from bulging and deforming during pressure drainage, the kiln inner sleeve 10 and the kiln outer sleeve 11 are fixedly connected to increase the strength of the cooling water jacket 12; specifically, the outer wall of the kiln inner sleeve 10 and the kiln outer sleeve 11 are connected and fixed by multiple connecting parts. Similarly, since the distance between the outer surface of the kiln inner sleeve 10 and the inner surface of the kiln outer sleeve 11 is 60 mm, which is very narrow, how to fix multiple connecting parts is a problem that needs to be solved.

[0044] If the water retaining ring plate 15 is welded to the inner surface of the kiln outer sleeve 11, it is not easy to install the kiln outer sleeve on the kiln inner sleeve after the water retaining ring plate 15 is welded. Considering the installation of the connecting parts, the inner ring end face of the water retaining ring plate 15 in this application is welded to the outer surface of the kiln inner sleeve 10, so that the water retaining ring plate 15 is fixedly inserted inside the cooling water jacket 12. In order to solve the problem of fixing multiple connecting parts between the outer surface of the kiln inner sleeve 10 and the kiln outer sleeve 11, this application designs that one end of each connecting part is welded to the outer wall of the kiln inner sleeve 10, and the other end is fully welded to the kiln outer sleeve 11. Specifically, each connecting part passes through the kiln outer sleeve 11, and the connecting part and the kiln outer sleeve 11 are sealed. The connecting piece is a pin 17 or a strip; how to put the larger kiln jacket 11 on the connecting piece is a problem that needs to be solved. In addition, the connecting piece needs to cover the entire outer surface of the kiln inner jacket 10, that is, the number of connecting pieces is very large. In this embodiment, the connecting piece is a cylindrical pin 17; the idea of ​​the present application document is to first weld a plurality of pins 17 to the outer surface of the kiln inner jacket 10, then open a hole in the kiln jacket 11, and pass the other end of the pin 17 through the hole in the kiln jacket 11, so that the welding point of the pin 17 on the outer surface of the kiln inner jacket 10 and the hole position of the opening in the kiln jacket 11 must correspond one to one and be accurate, otherwise the pin 17 on the kiln inner jacket 10 cannot be inserted into the hole in the kiln jacket 11 one to one. How to ensure that the welding point of the pin 17 on the outer surface of the kiln inner jacket 10 and the hole position of the opening in the kiln jacket 11 correspond one to one to the problem needs to be solved.

[0045] The present invention also provides a method for manufacturing a cooling water jacket structure for a kiln, using the above cooling water jacket structure, comprising:

[0046] S1. Spot welding is performed at a predetermined position on the outer surface of the kiln inner sleeve 10 having a rectangular vertical cross section by a processing device. In this embodiment, the processing device is a laser welder to determine the welding position of the pin 17 on the outer surface of the kiln inner sleeve 10 (to ensure the accuracy of the welding point of the pin 17 on the outer surface of the kiln inner sleeve 10);

[0047] S2. Figure 7 As shown, a plurality of pins 17 are correspondingly welded to predetermined positions on the outer surface of the kiln inner sleeve 10, and a plurality of water retaining ring plates 15 are welded to the outer surface of the kiln inner sleeve 10 according to predetermined positions; at the same time, a plurality of water retaining ring plates 15 are welded to the kiln inner sleeve 10, thereby increasing the rigidity of the kiln inner sleeve 10;

[0048] S3. Through holes are welded at positions of the kiln outer shell 11 corresponding to the plurality of pins 17 by processing equipment (to ensure the accuracy of the hole positions of the openings on the kiln outer shell 11). In this embodiment, the processing equipment is a laser welding machine, and the kiln outer shell 11 is put on the kiln inner shell 10, and each pin 17 is inserted into the through hole on the kiln outer shell 11, and each pin 17 passes through the end of the through hole and protrudes from the outer surface of the kiln outer shell 11, so as to achieve full welding of the pin 17 in the through hole; to complete this step of operation, if the four end faces of the kiln outer shell 11 corresponding to the length direction of the kiln inner shell 10 are divided into four plates, and then the four plates are respectively put on the pins 17 on the kiln inner shell 10 On, four plates are welded together, so there are four welds. This is the simplest solution to put the kiln outer shell 11 on the kiln inner shell 10, but there are four welds for such a long strip of continuous full welding, which is labor-intensive and prone to water leakage at the welds over time; the kiln outer shell 11 is preferably a rectangular sleeve with a rectangular vertical section punched out from a whole plate, that is, the whole plate needs to be cut and welded at least, so that it is not easy to leak water under the long-term use of the cooling water jacket 12; how to put the whole plate of the kiln outer shell 11 on the pins 17 on the inner sleeve, and each pin 17 passes through the end of the through hole and protrudes from the outer surface of the kiln outer shell 11, is a problem that needs to be solved.

[0049] S4. Fully weld the pin 17 to the kiln jacket 11; complete the welding operation on the kiln jacket 11 where welding is required.

[0050] In this application document, in step S3, the method of putting the kiln outer shell 11 on the kiln inner shell 10 and inserting each pin 17 into the through hole on the kiln outer shell 11 is:

[0051] The entire kiln jacket 11 with the through holes welded is evenly divided into two plates, which are respectively marked as an upper jacket plate 18 and a lower jacket plate 22. The upper jacket plate 18 and the lower jacket plate 22 are both bent into a trumpet-shaped groove; the upper jacket plate 18 includes an upper top plate 19, an upper left side plate 20 and an upper right side plate 21 located on both sides of the upper top plate 19, as shown in FIG. Figure 8As shown, the upper outer plate 18 is sleeved on the upper end of the kiln inner sleeve 10, and the pins 17 on the top surface of the kiln inner sleeve 10 are first inserted into the through holes of the upper top plate 19 one by one, and then the upper left plate 20 is pushed toward the kiln inner sleeve 10 with a tool (such as a clamp, a clamp, etc.), so that the pins 17 on the upper end of the left side of the kiln inner sleeve 10 are inserted into the through holes of the upper left plate 20 one by one; then the upper right plate 21 is pushed toward the kiln inner sleeve 10 with a tool, The pins 17 at the upper end portion of the right side of the kiln inner sleeve 10 are inserted into the through holes of the upper right side plate 21 one by one; in order to facilitate the pins 17 at the upper end portion of the left side of the kiln inner sleeve 10 to be inserted into the through holes of the upper left side plate 20 one by one, the diameters of the through holes on the upper left side plate 20 and the through holes on the upper right side plate 21 can be slightly larger.

[0052] The lower outer cover plate 22 includes a lower bottom plate 23, a lower left side plate 24 and a lower right side plate 25 located on both sides of the lower bottom plate 23. Fig. 9 As shown, the lower outer plate 22 is sleeved on the lower end of the kiln inner sleeve 10, and the pins 17 on the bottom surface of the kiln inner sleeve 10 are first inserted into the through holes of the lower bottom plate 23 one by one, and then the lower left side plate 24 is pushed toward the kiln inner sleeve 10 with a tool, so that the pins 17 at the lower end of the left side of the kiln inner sleeve 10 are inserted into the through holes of the lower left side plate 24 one by one; then the lower right side plate 25 is pushed toward the kiln inner sleeve 10 with a tool, so that the pins 17 at the lower end of the right side of the kiln inner sleeve 10 are inserted into the through holes of the lower right side plate 25 one by one. In order to facilitate the pins 17 at the lower end of the left side of the kiln inner sleeve 10 to be inserted into the through holes of the lower left side plate 24 one by one, and the pins 17 at the lower end of the right side of the kiln inner sleeve 10 to be inserted into the through holes of the lower right side plate 25 one by one, the diameters of the through holes of the lower left side plate 24 and the through holes of the lower right side plate 25 can be slightly larger. Finally, if Fig.10 As shown, the pins 17 are fully welded to the kiln jacket 11, completing the welding operation of the kiln jacket 11 at the places to be welded.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. The embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A method for manufacturing a cooling water jacket structure for a kiln, comprising a kiln inner jacket sleeved on the outer periphery of a kiln furnace, and a kiln outer jacket sleeved on the outer periphery of the kiln inner jacket, wherein the kiln inner jacket and the kiln outer jacket enclose a cooling water jacket for circulating coolant; the cooling water jacket is connected with a liquid inlet and a liquid outlet, and is characterized in that: A plurality of water retaining ring plates with openings are fixedly inserted inside the cooling water jacket along the length direction of the cooling water jacket, and each of the water retaining ring plates blocks the vertical section of the cooling water jacket so that the coolant flows from the opening of the water retaining ring plate; the openings of the plurality of water retaining ring plates are arranged in a spiral shape as a whole, so that the coolant in the cooling water jacket flows forward in a spiral shape; Alternatively, the openings of each two adjacent water retaining ring plates are arranged in reverse order so that the coolant in the cooling water jacket flows forward in an S shape; The production method comprises: S1. Spot welding is performed at a predetermined position on the outer surface of the kiln inner sleeve having a rectangular vertical cross section by processing equipment to determine the welding position of the connector on the outer surface of the kiln inner sleeve; S2. Welding a plurality of connectors corresponding to predetermined positions on the outer surface of the inner sleeve of the kiln, and welding a plurality of water retaining ring plates to the outer surface of the inner sleeve of the kiln at predetermined positions; S3. Through holes are welded at positions corresponding to a plurality of connectors on the kiln jacket by processing equipment, the kiln jacket is put on the kiln inner jacket, and each connector is inserted into the through hole on the kiln jacket, and each connector passes through the end of the through hole and protrudes from the outer surface of the kiln jacket; S4. Fully weld the connectors on the kiln jacket; complete the welding operation on the kiln jacket where welding is required; In step S3, the method of putting the kiln outer sleeve on the kiln inner sleeve and inserting each connecting piece into the through hole on the kiln outer sleeve is as follows: The entire kiln outer shell with through holes welded is evenly divided into two plates, which are respectively recorded as an upper outer shell plate and a lower outer shell plate, and the upper outer shell plate and the lower outer shell plate are bent into a trumpet-shaped groove; the upper outer shell plate includes an upper top plate, an upper left plate and an upper right plate located on both sides of the upper top plate, and the upper outer shell plate is sleeved on the upper end of the kiln inner shell, and the connecting pieces on the top surface of the kiln inner shell are first inserted into the through holes of the upper top plate one by one, and then the upper left plate is pushed toward the kiln inner shell with a tool, so that the connecting pieces at the upper end of the left side of the kiln inner shell are inserted into the through holes of the upper left plate one by one; and then the upper right plate is pushed toward the kiln inner shell with a tool, so that the connecting pieces at the upper end of the right side of the kiln inner shell are inserted into the through holes of the upper left plate one by one; The lower outer sleeve plate includes a lower bottom plate, a lower left side plate and a lower right side plate located on both sides of the lower bottom plate. The lower outer sleeve plate is sleeved on the lower end of the kiln inner sleeve. First, the connecting pieces on the bottom surface of the kiln inner sleeve are inserted into the through holes of the lower bottom plate one by one. Then, the lower left side plate is pushed toward the kiln inner sleeve with a tool so that the connecting pieces at the lower end of the left side of the kiln inner sleeve are inserted into the through holes of the lower left side plate one by one. Then, the lower right side plate is pushed toward the kiln inner sleeve with a tool so that the connecting pieces at the lower end of the right side of the kiln inner sleeve are inserted into the through holes of the lower left side plate one by one.

2. A cooling water jacket structure for a kiln, prepared by the method for preparing a cooling water jacket structure for a kiln as claimed in claim 1, characterized in that: The outer wall of the kiln inner sleeve and the kiln outer sleeve are connected and fixed by a plurality of connecting pieces, each of the connecting pieces passes through the kiln outer sleeve, and the connecting pieces are sealed and connected to the kiln outer sleeve.

3. A cooling water jacket structure for a kiln according to claim 2, characterized in that: The vertical cross-sections of the kiln inner sleeve and the kiln outer sleeve are rectangular, and the water retaining ring plate is U-shaped; The openings of every four adjacent water retaining ring plates are arranged in sequence clockwise or counterclockwise; or, the openings of every two adjacent water retaining ring plates are arranged in the opposite direction at 180°.

4. A cooling water jacket structure for a kiln according to claim 3, characterized in that: The opening of the water retaining ring plate is opening downward, opening to the left, opening upward, opening to the right, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the left, opening upward, opening to the right, opening downward, and opening to the left, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the right, opening downward, opening to the left, and opening upward, and circulating in sequence; or, the opening of the water retaining ring plate is opening downward, opening to the right, opening upward, opening to the left, and opening upward, and circulating in sequence; or, the opening of the water retaining ring plate is opening to the right, opening upward, opening to the left, and opening downward, and circulating in sequence; or, the opening of the water retaining ring plate is opening upward, opening to the left, opening downward, opening to the right, opening upward, opening to the left, and opening downward, and circulating in sequence; or, the opening of the water retaining ring plate is opening upward, opening to the left, opening downward, opening to the right, and opening upward, and circulating in sequence; Alternatively, the opening of the water retaining ring plate is opened downwards and then opened upwards, in a cycle; alternatively, the opening of the water retaining ring plate is opened upwards and then opened downwards, in a cycle; alternatively, the opening of the water retaining ring plate is opened to the left and then opened to the right, in a cycle; alternatively, the opening of the water retaining ring plate is opened to the right and then opened to the left, in a cycle.

5. The cooling water jacket structure for a kiln according to claim 2, characterized in that: The connecting pieces are pins or strips; one end of each connecting piece is welded to the outer wall of the inner sleeve of the kiln, and the other end is fully welded to the outer sleeve of the kiln.

6. A cooling water jacket structure for a kiln according to claim 2, characterized in that: The inner ring end surface of the water retaining ring plate is welded to the outer surface of the inner sleeve of the kiln.

7. The cooling water jacket structure for a kiln according to claim 2, characterized in that: The front and rear ends of each cooling water jacket structure are annular flanges, which allow the sintered products to pass through and connect the kiln inner jacket and the kiln outer jacket to seal the cooling water jacket; adjacent cooling water jacket structures are fixedly connected by flanges.

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