Water-cooling roller for precoated sand

Abstract

A precoated sand water cooling roller comprises a cooling roller, a cooling pond and a water conveying pipeline, the cooling roller comprises a roller body and a spiral cooling water pipe arranged on the inner wall of the roller body, the roller body is rotatable, two ports of the roller body are provided with a feeding port and a discharging port respectively, and the spiral cooling water pipe is used for conveying precoated sand from the feeding port to the discharging port; the cooling tank is used for storing cooling water; and the water conveying pipeline and the water conveying pump mounted on the water conveying pipeline are used for communicating two ports of the spiral cooling water pipe with the water inlet and the water outlet of the cooling pond, so that cooling water circularly flows between the cooling roller and the cooling pond. The device can solve the problem that the quality of the precoated sand does not reach the standard due to the fact that the precoated sand is turned over too high, and is higher in efficiency and more environmentally friendly.

Description

Technical Field

[0001] The utility model relates to a coated sand cooling roller, in particular to a coated sand water-cooled cooling roller, belonging to the technical field of coated sand cooling. Background Art

[0002] As is known, the production process of coated sand needs to be cooled. At present, the cooling devices for coated sand include a vibrating screen plus air cooling device and a drum plus water cooling device. Among them, the vibrating screen plus air cooling device has the problem of low efficiency. Although the drum plus water cooling device has improved efficiency and benefits, it has the following shortcomings:

[0003] The coated sand is transported in the drum by spiral blades, and at the same time, heat is exchanged with the drum sprayed on the outside to achieve a water-cooling process. Since coated sands of different proportions have different resistance to external impacts, when the drum spray method is used for cooling, the spiral blades used in the drum will lift the coated sand to a higher height and then scatter it. At this time, due to the increase in impact force and the different composition of the coated sand, the sand particles will be delaminated, resulting in a decrease in the quality of the coated sand, especially for special coated sand used for precision casting products, which will no longer meet the use requirements due to substandard product quality. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a water-cooled cooling drum for coated sand, which can solve the problem of substandard quality of coated sand caused by over-turning of the coated sand, and is more efficient and environmentally friendly.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A coated sand water-cooling drum, comprising:

[0007] A cooling drum, the cooling drum comprises a drum body and a spiral cooling water pipe arranged on the inner wall of the drum body, the drum body is rotatable and its two ports are respectively set as a feed port and a discharge port, the spiral cooling water pipe is used to transport the coated sand from the feed port to the discharge port;

[0008] A cooling pool, wherein the cooling pool is used to store cooling water;

[0009] The water delivery pipeline and the water delivery pump installed thereon are used to connect the two ports of the spiral cooling water pipe with the water inlet and outlet of the cooling pool, so that the cooling water circulates between the cooling drum and the cooling pool.

[0010] As described above, for a coated sand water-cooled cooling drum, optionally, the water supply pipeline includes a first access water pipe and a second access water pipe respectively connected to the water inlet and the water outlet of the cooling pool, and the other ends of the first access water pipe and the second access water pipe are respectively connected to the two ports of the spiral cooling water pipe.

[0011] According to the coated sand water-cooling cooling drum as described above, optionally, the first access water pipe and the second access water pipe are respectively connected to the ports of the spiral cooling water pipe located at the feed inlet and the discharge port; a first valve is provided on the second access water pipe, the water delivery pump is arranged near the water outlet, and the first valve is located on the side of the water delivery pump away from the cooling pool;

[0012] The first water pipe is provided with a second valve; the first water pipe is connected to the second water pipe through a third water pipe and a fourth water pipe, respectively, and the third water pipe and the fourth water pipe are connected with a third valve and a fourth valve, respectively;

[0013] The two ends of the third access water pipe are respectively connected to between the second valve and the cooling pool and between the first valve and the spiral cooling water pipe; the two ends of the fourth access water pipe are respectively connected to between the second valve and the spiral cooling water pipe and between the first valve and the cooling pool.

[0014] As described above, in a coated sand water-cooled cooling drum, optionally, the water outlet of the cooling pool is opened at its side bottom, and the second access water pipe is extended from the water outlet into the interior of the cooling pool; the top port of the cooling pool constitutes its water inlet, and the first access water pipe is connected by the top port.

[0015] As described above, for a coated sand water-cooled cooling drum, optionally, the outer periphery of the drum body is provided with a concentrically arranged drum ring gear, and the drum ring gear is meshedly connected to a drum drive motor fixed to the bottom of the drum body via a drive gear.

[0016] As described above, for a coated sand water-cooled cooling drum, optionally, at least one drum track is also concentrically arranged on the outer periphery of the drum, and each of the drum tracks is rollingly connected to a pair of roller supports fixed on both sides of the bottom of the drum.

[0017] As described above, a coated sand water-cooling drum, optionally, a feed hopper and a discharge hopper are respectively provided at the feed port and the discharge port for centralized input or output of coated sand.

[0018] As described above, in a coated sand water-cooled cooling drum, optionally, the spiral cooling water pipe adopts a single-tube form, a double-tube form or a multi-tube form. The single-tube form includes a single spiral water pipe, the double-tube form includes two spiral water pipes, and the multi-tube form includes more than three spiral water pipes.

[0019] As described above, for a coated sand water-cooled cooling drum, optionally, at least one water inlet and outlet port of the spiral cooling water pipe are connected to the water supply pipeline in sequence through a water pipe header and a rotary joint.

[0020] As described above, a coated sand water-cooled cooling drum, optionally, the inner walls at both ends of the cylinder are also provided with water pipe fixing brackets, the water pipe header is fixed on the water pipe fixing bracket, and the water pipe fixing bracket is used to limit the water pipe header to the axial position of the cylinder.

[0021] With the aid of the above technical scheme, the utility model of the coated sand water-cooling cooling drum, by arranging a spiral cooling water pipe on the inner wall of the drum that can simultaneously transport materials and cooling water, on the one hand, the spiral cooling water pipe is arranged inside the cooling drum, and utilizes the structural shape of the spiral cooling water pipe to reduce the inner diameter size of the transported material, and drive the material forward in a spiral manner, thereby solving the problem of substandard quality of the coated sand caused by excessive turning of the coated sand; on the other hand, the spiral cooling water pipe is connected to the external cooling pool through a closed-loop water supply pipeline, thereby constituting a circulating heat exchange with the material inside the drum, thereby making the cooling efficiency higher and the cooling process more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a stereoscopic diagram of the first embodiment of the coated sand water-cooling cooling drum of the utility model.

[0024] Figure 2 It is a top view of the first embodiment of the coated sand water-cooling cooling drum of the utility model.

[0025] Figure 3 and Figure 4 They are all three-dimensional diagrams of the second embodiment of the coated sand water-cooled cooling drum of the utility model, wherein Figure 4 This is a perspective effect diagram.

[0026] Figure 5 It is a top view of the second embodiment of the coated sand water-cooling cooling drum of the utility model.

[0027] Figure 6 It is a front view of the second embodiment of the coated sand water-cooling cooling drum of the utility model.

[0028] Figure 7It is a rear view of the second embodiment of the coated sand water-cooling roller of the utility model.

[0029] Figure 8 yes Figure 5 Cross-sectional view at CC.

[0030] Fig. 9 yes Figure 5 Cross-sectional view at the middle BB.

[0031] Fig.10 A BB cross-sectional view of a third embodiment of a coated sand water-cooled temperature reduction drum according to the utility model.

[0032] Meaning of reference numerals in the figure:

[0033] 1-Cooling drum; 11-Drum body; 111-Feeding port; 112-Discharging port; 113-Drum gear ring; 114-Drum track; 12-Spiral cooling water pipe; 121-Water pipe header; 122-Swivel joint; 13-Drum driving motor; 131-Driving gear; 14-Roller support; 15-Feeding hopper; 16-Discharging hopper; 17-Water pipe fixing bracket;

[0034] 2-cooling pool; 21-water outlet; 22-water inlet;

[0035] 3-water pipeline; 31-first access water pipe; 311-second valve; 32-second access water pipe; 321-first valve; 322-water pump; 33-third access water pipe; 331-third valve; 34-fourth access water pipe; 341-fourth valve. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0037] In the related art, the applicant has actually used a drum that uses water cooling to cool coated sand in production, which is more efficient and effective than the drum that uses vibrating screen plus air cooling to cool coated sand on the market. However, the working principle of this drum that uses water cooling to cool coated sand is to use spiral blades to transport the coated sand inside the drum, during which the coated sand is lifted to a higher height and then scattered, while water is sprayed outside the drum to cool it down. Coated sands with different proportions have different resistance to external impacts. During the above-mentioned cooling and transportation process, due to the increase in impact force and the different components of the coated sand, sand particles will be delaminated, which will eventually cause the quality of the coated sand to decline. For special coated sands used as precision castings, this will lead to substandard product quality.

[0038] In view of this, if Figures 1 to 10 As shown, each embodiment of the utility model provides a coated sand water-cooled cooling drum, comprising:

[0039] The cooling drum 1 comprises a drum 11 and a spiral cooling water pipe 12 arranged on the inner wall of the drum 11. The drum 11 is rotatable and its two ports are respectively set as a feed port 111 and a discharge port 112. The spiral cooling water pipe 12 is used to transport the coated sand from the feed port 111 to the discharge port 112.

[0040] Cooling pool 2, the cooling pool is used to store cooling water;

[0041] The water delivery pipeline 3 and the water delivery pump 322 installed thereon are used to connect the two ends of the spiral cooling water pipe 12 with the water inlet and outlet 21 of the cooling pool 2, so that the cooling water circulates between the cooling drum 1 and the cooling pool 2.

[0042] The cooling water enters and exits the spiral cooling water pipe 12 through the water supply pipeline 3, so that low-temperature cooling water always flows on the inner wall of the spiral cooling water pipe 12. The spiral cooling water pipe 12 can continuously cool the coated sand in the cooling drum 1 through heat exchange, thereby achieving a sufficient cooling effect.

[0043] At the same time, the provision of the spiral cooling water pipe 12 reduces the inner diameter of the cooling drum 1 used to transport the coated sand, thereby making the coated sand be lifted up to a lower height when the drum rotates, and allowing the coated sand to slide continuously toward the discharge port 112 along the spiral cooling water pipe 12, thereby avoiding the occurrence of sand grain de-coating and ensuring the high quality of the coated sand.

[0044] Further optionally, the outer periphery of the cylinder 11 described in each embodiment of the present utility model is provided with a concentrically arranged drum gear ring 113 , and the drum gear ring 113 is meshedly connected with a drum driving motor 13 fixed to the bottom of the cylinder 11 via a driving gear 131 .

[0045] The drum drive motor 13 can be equipped with a reducer or a reduction module, which can obtain different rotational speeds of the driving gear 131, and then limit the different rotational speeds of the cooling drum 1 by setting the tooth ratio of the drum ring gear 113 and the driving gear 131, which is ultimately used to obtain a suitable material conveying speed.

[0046] Further optionally, at least one roller track 114 is concentrically arranged on the outer periphery of the cylinder 11 described in each embodiment of the present invention, and each roller track 114 is rollingly connected to a pair of roller supports 14 fixed on both sides of the bottom of the cylinder 11.

[0047] The roller support 14 is provided for, firstly, bearing the weight of the entire cooling drum 1 to place it stably, and secondly, cooperating with the roller track 114 to jointly constrain the cooling drum 1 to rotate consistently throughout its entire length to prevent the cooling drum 1 from shifting while rolling. Further preferably, an even number of roller tracks 114 are provided in the length direction of the drum body 11 and arranged symmetrically, so that multi-point uniform support can be more conducive to stable rotation.

[0048] Further optionally, the feed port 111 and the discharge port 112 described in each embodiment of the utility model are respectively provided with a feed hopper 15 and a discharge hopper 16 for centrally inputting or outputting coated sand.

[0049] The feed hopper 15 connects the inside and outside of the cylinder 11, so as to facilitate the efficient addition of coated sand from the outside of the cylinder into the cylinder. In order to further improve the convenience and operation efficiency, preferably, the feed hopper 15 can be fixedly connected to the inner wall of the cylinder 11 near the roller support 14, and the feed hopper 15 is in a closed shape as a whole, with the large end of the closed end located outside the cylinder, the small end located inside the cylinder, and the height of the large end is greater than the small end. In a specific implementation, the discharge hopper 16 can be connected to the cylinder 11 as a whole, and the coated sand conveyed by the spiral is received and collected by the entire end, and efficiently output through the bottom outlet with the help of its own weight.

[0050] Further optionally, at least one water inlet and outlet port of the spiral cooling water pipe 12 described in each embodiment of the present invention are connected to the water supply pipeline 3 in sequence through the water pipe header 121 and the rotary joint 122.

[0051] The water pipe header 121 and the rotary joint 122 are both existing technology products. The water pipe header 121 can directly use a T-shaped three-way connector or a cross-shaped four-way connector, and can also be replaced according to the number of water pipes in the cooling drum 1. The function of the rotary joint 122 is mainly to connect the water supply pipeline 3 and the spiral cooling water pipe 12 and meet the requirements of relative rotation. During specific assembly, one end of the water pipe header 121 is fixed on the water pipe fixing bracket 17, and this end is connected to the spiral cooling water pipe 12, and the other end of the water pipe header 121 is connected to the rotary joint 122, and the other end of the rotary joint 122 is flexibly connected to the water supply pipeline 3.

[0052] Further optionally, the inner walls at both ends of the cylinder 11 described in each embodiment of the utility model are also respectively provided with a water pipe fixing bracket 17, and the water pipe collecting head 121 is fixed on the water pipe fixing bracket 17, and the water pipe fixing bracket 17 is used to limit the water pipe collecting head 121 to the axial position of the cylinder 11.

[0053] Since the rotary joint 122 needs to be located on the axis of the cylinder 11 to better reduce wear, a water pipe fixing bracket 17 is provided to better maintain the center position.

[0054] First embodiment:

[0055] Reference Figure 1 and Figure 2 In the first embodiment, the water delivery pipeline 3 includes a first access water pipe 31 and a second access water pipe 32 respectively connected to the water inlet 22 and the water outlet 21 of the cooling pool 2, and the other ends of the first access water pipe 31 and the second access water pipe 32 are respectively connected to the two ports of the spiral cooling water pipe 12. Specifically, the water delivery pump 322 shown in the figure is a pump installed on the second access water pipe 32, the water inlet 22 and the water outlet 21 are both opened at the side bottom of the cooling pool 2, the pump is arranged near the water outlet 21, and the ends of the first access water pipe 31 and the second access water pipe 32 extend to the inside of the cooling pool 2.

[0056] Material direction: The coated sand is fed into the cylinder 11 from the feed port 111 and flows to the discharge port 112 in a sliding manner through the spiral cooling water pipe 12 in the cylinder 11 .

[0057] Cooling direction: When the first access water pipe 31 is connected to the water inlet 22 of the cooling pool 2 and one end of the spiral cooling water pipe 12 located at the feed port 111, and the second access water pipe 32 is connected to the water outlet 21 of the cooling pool 2 and the other end of the spiral cooling water pipe 12 located at the discharge port 112, the cooling water is transported from the second access water pipe 32 to the spiral cooling water pipe 12, and flows from the discharge port 112 to the feed port 111, and then flows back to the cooling pool 2 from the first access water pipe 31, completing the cooling process in which the cooling direction is opposite to the material direction, refer to Figure 1 and Figure 2 .

[0058] When the first access water pipe 31 connects the water inlet 22 of the cooling pool 2 and one end of the spiral cooling water pipe 12 located at the discharge port 112, and the second access water pipe 32 connects the water outlet 21 of the cooling pool 2 and the other end of the spiral cooling water pipe 12 located at the feed port 111, at this time, the cooling water is transported to the spiral cooling water pipe 12 by the second access water pipe 32, and flows from the feed port 111 to the discharge port 112, and then flows back to the cooling pool 2 by the first access water pipe 31, thus completing the cooling process in which the cooling direction is consistent with the material direction (not shown in the figure).

[0059] Second embodiment:

[0060] Reference Figures 3 to 9 In the second embodiment, the first access water pipe 31 and the second access water pipe 32 are respectively connected to the ports of the spiral cooling water pipe 12 located at the feed port 111 and the discharge port 112; the second access water pipe 32 is provided with a first valve 321, and the water delivery pump 322 is a water pump installed on the second access water pipe 32, and the water pump is arranged near the water outlet 21, and the first valve 321 is located on the side of the water delivery pump 322322 away from the cooling pool;

[0061] The first water inlet pipe 31 is provided with a second valve 311; the first water inlet pipe 31 and the second water inlet pipe 32 are also connected through a third water inlet pipe 33 and a fourth water inlet pipe 34, respectively, and the third water inlet pipe 33 and the fourth water inlet pipe 34 are connected with a third valve 331 and a fourth valve 341 respectively;

[0062] The two ends of the third access water pipe 33 are respectively connected to between the second valve 311 and the cooling pool and between the first valve 321 and the spiral cooling water pipe 12; the two ends of the fourth access water pipe 34 are respectively connected to between the second valve 311 and the spiral cooling water pipe 12 and between the first valve 321 and the cooling pool.

[0063] When in use, the hot coated sand in the feed hopper 15 enters the cooling drum 1 and is continuously driven by the spiral cooling water pipe 12 to move in the discharging direction. The cooling water pumped out by the water delivery pump 322 enters the spiral cooling water pipe 12 inside the cylinder 11 through the water delivery pipeline 3 and cools the coated sand. Based on the forward and reverse flow of cooling water, different cooling effects can be achieved. A more specific cooling method can be adjusted by the operator according to the coated sand product by controlling the opening and closing of each valve:

[0064] The first cooling method: when the first valve 321 and the second valve 311 are opened, and the third valve 331 and the fourth valve 341 are closed, cooling water enters the cooling drum 1 from the discharge direction. Due to the heat exchange effect, the discharge temperature can be lowered, so that the corresponding coated sand product is more suitable for slowly cooling formula products.

[0065] The second cooling method: When the third valve 331 and the fourth valve 341 are opened, and the first valve 321 and the second valve 311 are closed, cooling water enters the cooling drum 1 from the feed port 111, which can achieve a faster cooling speed, but the temperature of the discharged coated sand will be higher than the normal temperature, which is more suitable for formula products that require rapid cooling. The operator can adjust it according to the coated sand product.

[0066] Finally, when the coated sand is brought to the discharge port 112, it will be collected by the discharge hopper 16 and enter the next production process.

[0067] Optionally, the water outlet 21 of the cooling pool 2 described in this second embodiment is opened at its side bottom, and the second access water pipe 32 extends from the water outlet 21 into the interior of the cooling pool 2; the top port of the cooling pool 2 constitutes its water inlet 22, and the first access water pipe 31 is connected to the top port.

[0068] The cooled hot return water enters the cooling pool 2 through the open top port, which can release heat more quickly, and natural cooling can save energy. The cooling water temperature at the bottom of the cooling pool is lower, which better meets the use needs.

[0069] Third embodiment:

[0070] Reference Fig.10 In the third embodiment, the spiral cooling water pipe 12 is in a single-tube form, which includes a single spiral water pipe. Fig. 9 In the first and second embodiments, the spiral cooling water pipe 12 adopts a double-tube form, which includes two spiral water pipes. In other alternative embodiments, the spiral cooling water pipe 12 can also adopt a multi-tube form of more than three spiral water pipes. The specific number of spiral water pipes can be selected as needed to increase the cooling water flow. Regardless of the single-tube form, double-tube form or multi-tube form, they are all connected to the rotary joint 122 after being merged through the water pipe header 121.

[0071] Strengthen cooling principle: Through the spiral water pipe with a smaller diameter but more turns, the coated sand can be lifted up to a lower height when the cooling drum 1 rotates, and more often slides along the spiral water pipe to continuously move toward the discharge port 112. The more turns the spiral water pipe has, the smaller the angle with the inner diameter of the cylinder 11, and the easier it is for the coated sand to slide down when it is lifted up.

[0072] The coated sand water-cooling cooling drum provided in each embodiment of the utility model has the following technical advantages:

[0073] 1. Lower falling height of coated sand.

[0074] Due to its spiral water pipe design, in actual use, the coated sand usually slides down from no higher than 1 / 4 of the drum diameter. Compared with the spiral blade design, the welding process is less complicated and the wear caused by the raised sand is reduced.

[0075] 2. More environmentally friendly.

[0076] Compared with using external spraying to cool the drum, it will cause excessive humidity inside the workshop, and a large exhaust fan is needed for exhaust and dehumidification; after spraying, the circulating cooling water is collected and will also contact and absorb dust in the air and rust on the drum wall, and a sedimentation and filtration process is required before it can be recycled. As the water quality deteriorates, the cooling water must be replaced after a period of time. The utility model adopts a water pipeline 3+ spiral water pipe circulation cooling method, and the cooling water in the pipe does not come into contact with anything outside the production process throughout the process, maintaining the stability of the water quality, and does not require a filtration system or a short-term replacement of cooling water, which is more economical, energy-saving, and environmentally friendly.

[0077] 3. Better cooling control.

[0078] The utility model can utilize the water delivery pipeline 3 to adjust the water supply flow rate and control the opening and closing of the valve, so as to obtain cooling methods with different effects, better adjust the cooling speed of the coated sand and control the temperature of the coated sand during discharge.

[0079] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] It should be noted that in the description of the present utility model, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0082] The various embodiments or implementation methods of the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0083] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A coated sand water-cooled cooling drum, characterized in that: include: A cooling drum, the cooling drum comprises a drum body and a spiral cooling water pipe arranged on the inner wall of the drum body, the drum body is rotatable and its two ports are respectively set as a feed port and a discharge port, the spiral cooling water pipe is used to transport the coated sand from the feed port to the discharge port; A cooling pool, wherein the cooling pool is used to store cooling water; The water delivery pipeline and the water delivery pump installed thereon are used to connect the two ports of the spiral cooling water pipe with the water inlet and outlet of the cooling pool, so that the cooling water circulates between the cooling drum and the cooling pool.

2. The coated sand water-cooling cooling drum according to claim 1 is characterized in that: The water delivery pipeline includes a first access water pipe and a second access water pipe respectively connected to the water inlet and the water outlet of the cooling pool, and the other ends of the first access water pipe and the second access water pipe are respectively connected to the two ports of the spiral cooling water pipe.

3. The coated sand water-cooling roller according to claim 2, characterized in that: A first valve is provided on the second water inlet pipe, the water delivery pump is arranged close to the water outlet, and the first valve is located on a side of the water delivery pump away from the cooling pool; The first water pipe is provided with a second valve; the first water pipe is connected to the second water pipe through a third water pipe and a fourth water pipe, respectively, and the third water pipe and the fourth water pipe are connected with a third valve and a fourth valve, respectively; The two ends of the third access water pipe are respectively connected to between the second valve and the cooling pool and between the first valve and the spiral cooling water pipe; the two ends of the fourth access water pipe are respectively connected to between the second valve and the spiral cooling water pipe and between the first valve and the cooling pool.

4. The coated sand water-cooling cooling drum according to claim 3 is characterized in that: The water outlet of the cooling pool is opened at its side bottom, and the second access water pipe extends from the water outlet into the interior of the cooling pool; the top port of the cooling pool constitutes its water inlet, and the first access water pipe is connected to the top port.

5. The coated sand water-cooling drum according to any one of claims 1 to 4, characterized in that: The outer periphery of the cylinder is provided with a concentrically arranged roller gear ring, and the roller gear ring is meshedly connected with a roller driving motor fixed at the bottom of the cylinder through a driving gear.

6. The coated sand water-cooling roller according to claim 5, characterized in that: At least one roller track is also concentrically arranged on the outer periphery of the cylinder, and each of the roller tracks is rollingly connected to a pair of roller supports fixed on both sides of the bottom of the cylinder.

7. The coated sand water-cooling roller according to claim 6, characterized in that: The feed port and the discharge port are respectively provided with a feed hopper and a discharge hopper for centrally inputting or outputting coated sand.

8. The coated sand water-cooling drum according to any one of claims 1 to 4, characterized in that: The spiral cooling water pipe adopts a single-tube form, a double-tube form or a multi-tube form. The single-tube form includes a single spiral water pipe, the double-tube form includes two spiral water pipes, and the multi-tube form includes more than three spiral water pipes.

9. The coated sand water-cooling drum according to claim 8, characterized in that: At least one water inlet and outlet port of the spiral cooling water pipe are connected to the water delivery pipeline in sequence through a water pipe header and a rotary joint.

10. The coated sand water-cooling roller according to claim 9, characterized in that: The inner walls at both ends of the cylinder are respectively provided with water pipe fixing brackets, and the water pipe header is fixed on the water pipe fixing brackets. The water pipe fixing brackets are used to limit the water pipe header to the axial position of the cylinder.

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