Crude sand temperature adjusting device
By using an air blowing pipe combined with an external air source device, a heating rod, and an air cooling device in the raw sand temperature regulation device, the problems of low heat exchange efficiency and insufficient heat supply in the prior art are solved, and the rapid regulation and uniformity of raw sand temperature are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-07
AI Technical Summary
Existing raw sand temperature control devices suffer from low heat exchange efficiency and insufficient heat supply, especially under the requirements of rapid heating processes.
It uses an air blowing pipe connected to an external air source device. The air blowing pipe has air blowing holes, allowing hot and cold air to directly contact the raw sand. Combined with the switching module of heating rod and air cooling device, it can achieve rapid adjustment and uniformity of raw sand temperature.
It improves the efficiency and uniformity of raw sand temperature regulation, enhances the uniformity and efficiency of heat exchange, and meets the requirements of rapid heating process.
Smart Images
Figure CN224087901U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting technology, and in particular to a raw sand temperature regulating device. Background Technology
[0002] In casting technology, the temperature of raw sand affects its performance. Different seasons or usage scenarios may cause the temperature of raw sand to vary, such as being too cold in winter and too hot in summer. In such cases, it is necessary to adjust the temperature of raw sand to maintain it within a certain range.
[0003] Existing methods for regulating the temperature of raw sand primarily utilize hot or cold air generated by blowers or air coolers. This air is delivered through a single pipeline to a sand hopper for heat exchange. The sand hopper receives, processes, and then outputs the raw sand. Simultaneously, electric heating rods are used within the hopper for auxiliary heating. These electric heating rods heat the raw sand through thin-walled steel pipes and finned tubes. This method regulates the temperature of the raw sand through the combined action of the air medium and the heating element.
[0004] The disadvantages of this method are as follows: First, after the hot and cold air enter the sand hopper through a single pipe, the uneven gas distribution results in a limited contact area with the original sand, leading to low heat exchange efficiency. Second, under heating conditions, there is a problem of insufficient heat supply when relying solely on hot air for heat exchange, and the heat conduction path of the existing electric heating rod has heat loss, making it difficult to meet the process requirements for rapid heating in actual production. Utility Model Content
[0005] The purpose of this invention is to provide a raw sand temperature regulating device to solve the problem of low raw sand temperature regulating efficiency in the prior art.
[0006] This utility model provides a raw sand temperature regulating device, including a sand hopper, an air blowing pipe inside the sand hopper, air blowing holes on the pipe wall, and an external air source device. The external air source device includes an air heating device and an air cooling device, and also includes a switching module that switches the working state of the air heating device and the air cooling device.
[0007] In an optional embodiment, at least two air blowing pipes are provided in the sand hopper along the height direction.
[0008] In an optional embodiment, at least two air blowing pipes are provided horizontally inside the sand hopper.
[0009] In an optional embodiment, a heating rod is also provided inside the sand hopper, and the heating rod and the air blowing pipe are staggered along the height direction and distributed relatively vertically.
[0010] In an optional implementation, both ends of the air blowing pipe are connected to an external air source device.
[0011] In an optional embodiment, an air inlet chamber is also included, which is located on the side wall of the sand hopper. An air blowing pipe is connected to the air inlet chamber, and the air inlet chamber is connected to an external air source device.
[0012] In an optional embodiment, the air intake chamber is arranged around the sand hopper; or, the air intake chamber is arranged on both sides of the sand hopper.
[0013] In an optional embodiment, the air blowing pipe also includes a finned tube.
[0014] In an optional embodiment, both the finned tube and the air blowing holes are provided in multiples along the length of the air blowing tube.
[0015] In an optional embodiment, the finned tubes and air vents are arranged sequentially at intervals.
[0016] The raw sand temperature regulating device provided by this utility model has the following beneficial effects:
[0017] 1. The raw sand temperature regulating device includes an air blowing pipe. The air blowing pipe is connected to an external air source device. The pipe body can regulate the temperature of the raw sand by contacting the raw sand in the sand hopper. At the same time, the air blowing pipe is also equipped with air blowing holes. Cold air or hot air from the external air source device can also be blown into the raw sand in the sand hopper through the air blowing holes. The cold air or hot air can directly regulate the temperature of the raw sand. The large contact area between the cold air and the raw sand can improve the efficiency and uniformity of heat exchange.
[0018] 2. The air blown into the sand hopper from the air blowing hole can not only directly regulate the raw sand, but also drive the raw sand in the sand hopper to move, forming an effect similar to the boiling of the raw sand. During the process of being blown by the air, the raw sand generates relative movement with each other, which can improve the uniformity of heat exchange. In particular, the raw sand near the air blowing pipe changes temperature earlier than other parts of the raw sand because it is in contact with the air blowing pipe. Under the state of raw sand movement, it can promote the heat exchange between this part of the raw sand and other parts of the raw sand, thereby improving the efficiency and uniformity of heat exchange. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A schematic diagram of the overall structure of the raw sand temperature regulating device provided in this embodiment of the utility model;
[0021] Figure 2 A schematic diagram of the air blowing pipe of the raw sand temperature regulating device provided in this embodiment of the utility model.
[0022] Icons: 100-Sand hopper; 101-External air source device; 102-Blowing pipe; 103-Heating rod; 104-Air inlet chamber; 105-Air heating device; 106-Air cooling device; 107-Finned tube; 108-Blowing hole. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0030] This utility model embodiment provides a raw sand temperature regulating device, such as... Figure 1 and Figure 2 As shown, the device includes a sand hopper 100, an air blowing pipe 102 inside the sand hopper 100, and air blowing holes 108 on the pipe wall of the air blowing pipe 102. The air blowing pipe 102 is connected to an external air source device 101. The external air source device 101 includes an air heating device 105 and an air cooling device 106. The external air source device 101 also includes a switching module, which switches the working state of the air heating device 105 and the air cooling device 106.
[0031] in, Figure 1 This is a schematic diagram of the overall structure of the raw sand temperature regulation device. Figure 2 This is a schematic diagram of the air blowing pipe 102 of the raw sand temperature regulating device.
[0032] The puncture positioning needle provided in this embodiment has the following beneficial effects:
[0033] 1. The raw sand temperature regulating device includes an air blowing pipe 102. The air blowing pipe 102 is connected to an external air source device 101. The pipe body of the air blowing pipe 102 can regulate the temperature of the raw sand by contacting the raw sand in the sand hopper 100. At the same time, the air blowing pipe 102 is also provided with an air blowing hole 108. Cold air or hot air from the external air source device 101 can also be blown into the raw sand in the sand hopper 100 through the air blowing hole 108. The cold air or hot air can directly regulate the temperature of the raw sand. The large contact area between the cold and hot air and the raw sand can improve the efficiency and uniformity of heat exchange.
[0034] 2. The air blown into the raw sand in the sand hopper 100 from the air blowing hole 108 can not only directly regulate the raw sand, but also drive the raw sand in the sand hopper 100 to move, forming an effect similar to the boiling of the raw sand. During the process of being blown by the air, the raw sand generates relative movement with each other, which can improve the uniformity of heat exchange. In particular, the raw sand near the air blowing pipe 102 changes temperature earlier than other parts of the raw sand because it is in contact with the air blowing pipe 102. Under the state of raw sand movement, it can promote the heat exchange between this part of the raw sand and other parts of the raw sand, thereby improving the efficiency and uniformity of heat exchange.
[0035] In the existing technology, the raw sand temperature is regulated by heating rod 103 or air pipe. Heat can only be conducted through contact. The raw sand closer to heating rod 103 or air pipe is more likely to change temperature earlier, while the raw sand closer to heating rod 103 or air pipe is less likely to change temperature.
[0036] Based on this, in order to increase the efficiency of heat exchange, the existing technology is to increase the density of heating rods 103 or pipes, that is, to set more heating rods 103 or pipes in the sand hopper 100. However, the increase in the number of heating rods 103 or pipes will occupy the internal space of the sand hopper 100, which will bring negative effects.
[0037] The raw sand temperature regulating device provided in this embodiment directly blows cold or hot air to the raw sand through the air blowing hole 108 of the air blowing pipe 102. On the one hand, the cold or hot air can directly change the temperature. On the other hand, the cold or hot air can also make the raw sand flow, forming an effect similar to the boiling of the raw sand, which can increase the efficiency and uniformity of heat exchange. Compared with the prior art, it has obvious technological progress.
[0038] The switching module switches the working states of the air heating device 105 and the air cooling device 106, so that the raw sand temperature regulating device can switch between the two working states of heating raw sand and cooling raw sand.
[0039] In some embodiments, the air blowing hole 108 of the air blowing pipe 102 is disposed downward within the sand hopper 100, thereby preventing raw sand from entering the air blowing pipe 102 through the air blowing hole 108, such as Figure 2 As shown, Figure 2 This is a bottom view of the air inlet pipe 102.
[0040] In some embodiments, such as Figure 1As shown, at least two air blowing pipes 102 are provided in the sand hopper 100 along the height direction, thereby forming a multi-layer layout in the sand hopper 100. On the one hand, a larger number of air blowing pipes 102 can increase the contact area for heat exchange and increase the number and position distribution of air outlets. On the other hand, the multi-layer layout can also improve the uniformity of the raw sand in the height direction in the sand hopper 100.
[0041] In some embodiments, at least two air blowing pipes 102 are provided horizontally within the sand hopper 100, that is, at least two air blowing pipes 102 are provided at the same height, and these air blowing pipes 102 can be arranged parallel to each other. Similarly, providing more air blowing pipes 102 at the same height, and increasing the number and positional distribution of air outlets, can increase the contact area for heat exchange and improve the horizontal uniformity of the raw sand within the sand hopper 100.
[0042] In some embodiments, multiple air blowing pipes 102 can be simultaneously arranged in both the vertical and horizontal directions within the sand hopper 100. Furthermore, different numbers of air blowing pipes 102 can be arranged at different heights, such as... Figure 1 As shown, the upper part of the sand hopper 100 is larger than the lower part, allowing for the installation of more air blowing pipes 102 at the upper part to achieve the same density distribution.
[0043] In some embodiments, such as Figure 1 As shown, the sand hopper 100 is also equipped with heating rods 103. The heating rods 103 and the air blowing pipes 102 are staggered along the height direction and distributed relatively vertically. This distribution structure makes it easier to improve the uniformity of heat exchange. Similarly, multiple heating rods 103 can also be arranged in the height direction and the horizontal direction.
[0044] In some embodiments, both ends of the air blowing pipe 102 are connected to an external air source device 101 to form an air circulation. There is no need to set up a circulation pipe inside the air blowing pipe 102, and the structure of the air blowing pipe 102 can be set to be simpler.
[0045] In some embodiments, the raw sand temperature regulating device further includes an air inlet chamber 104, which is disposed on the side wall of the sand hopper 100. An air blowing pipe 102 is connected to the air inlet chamber 104, and the air inlet chamber 104 is connected to an external air source device 101. In this case, multiple air blowing pipes 102 can be connected to one air inlet chamber 104, which can simplify the connection pipeline configuration of multiple air inlets.
[0046] In some embodiments, such as Figure 1 As shown, the air inlet chamber 104 is located on both sides of the sand hopper 100, and the two ends of the air blowing pipe 102 are respectively connected to the air inlet chamber 104 on both sides. The two air inlet chambers 104 can be connected by a pipeline.
[0047] In some embodiments, the air inlet chamber 104 is arranged around the sand hopper 100, and both ends of the air blowing pipe 102 are connected to the air inlet chamber 104.
[0048] In some embodiments, such as Figure 2 As shown, the air blowing pipe 102 also includes a finned tube 107. The finned tube 107 can increase the effective surface area of the air blowing pipe 102 in contact with the raw sand, and the finned tube 107 can also exchange heat with the raw sand, thereby increasing the contact area for heat exchange of the air blowing pipe 102 and improving the efficiency of heat exchange.
[0049] In some embodiments, such as Figure 2 As shown, multiple finned tubes 107 and air holes 108 are provided along the length of the air pipe 102. Multiple air holes 108 can increase the effect of the blown airflow to promote the flow of raw sand, and multiple finned tubes 107 can further increase the heat exchange contact area of the air pipe 102.
[0050] In some embodiments, such as Figure 2 As shown, the finned tube 107 and the air blowing hole 108 are arranged alternately to further improve the uniformity of heat exchange.
[0051] The raw sand temperature regulating device provided by this utility model is particularly suitable for casting molding sand with good fluidity, so as to ensure that the blowing hole 108 of the blowing pipe 102 promotes the flow of raw sand.
[0052] The air heating device 105 can be a blower, and the air cooling device 106 can be a cooler. The air blown out from the air blowing pipe 102 can be automatically discharged from the opening of the sand hopper 100 after heat exchange.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A raw sand temperature regulating device, characterized in that, The device includes a sand hopper (100), which is equipped with an air blowing pipe (102). The air blowing pipe (102) has air blowing holes (108) on its wall. The air blowing pipe (102) is connected to an external air source device (101). The external air source device (101) includes an air heating device (105) and an air cooling device (106). The external air source device (101) also includes a switching module, which switches the working state of the air heating device (105) and the air cooling device (106).
2. The raw sand temperature regulating device according to claim 1, characterized in that, At least two air blowing pipes (102) are provided in the sand hopper (100) along the height direction.
3. The raw sand temperature regulating device according to claim 1, characterized in that, At least two air blowing pipes (102) are provided in the sand hopper (100) along the horizontal direction.
4. The raw sand temperature regulating device according to claim 2 or 3, characterized in that, The sand hopper (100) is also equipped with a heating rod (103), and the heating rod (103) and the air blowing pipe (102) are staggered along the height direction and distributed relatively vertically.
5. The raw sand temperature regulating device according to claim 1, characterized in that, Both ends of the air blowing pipe (102) are connected to the external air source device (101).
6. The raw sand temperature regulating device according to any one of claims 2-5, characterized in that, It also includes an air inlet chamber (104), which is located on the side wall of the sand hopper (100), and the air blowing pipe (102) is connected to the air inlet chamber (104), which is connected to the external air source device (101).
7. The raw sand temperature regulating device according to claim 6, characterized in that, The air intake chamber (104) is arranged around the sand hopper (100); or, the air intake chamber (104) is arranged on both sides of the sand hopper (100).
8. The raw sand temperature regulating device according to claim 1, characterized in that, The air blowing pipe (102) also includes a finned tube (107).
9. The raw sand temperature regulating device according to claim 8, characterized in that, Both the finned tube (107) and the air blowing hole (108) are provided with multiple holes along the length of the air blowing tube (102).
10. The raw sand temperature regulating device according to claim 9, characterized in that, The finned tube (107) and the air blowing hole (108) are arranged alternately.