A quartz sand heat exchange mechanism with spiral channels

Abstract

The present invention discloses a quartz sand heat exchange mechanism with a spiral channel, which relates to the technical field of heat exchange equipment, including a discharge pipe for outputting high-temperature quartz sand, a heat exchange guide mechanism is provided below the discharge pipe, and the heat exchange guide mechanism includes: a receiving assembly, which includes a vertically arranged spiral channel tube, a tray for receiving quartz sand is concentrically fixed to the outside of the spiral channel tube, an opening connected to the accommodating space of the tray is provided on the side of the spiral channel tube, and a mesh portion is provided on the bottom of the tray; an airflow assembly, which includes an air jet pipe located below the tray, the airflow jetted by the air jet pipe can blow the quartz sand on the mesh portion into the opening, and the present invention blows up the quartz sand on the mesh portion in turn by jetting air through the air jet pipe and enters the spiral channel tube through the opening, and each quartz sand particle is blown by the airflow to achieve rapid heat dissipation, thereby improving the efficiency of heat exchange and the cooling effect.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange equipment, in particular to a quartz sand heat exchange mechanism with a spiral channel. Background Art

[0002] Quartz sand is an important mineral material, such as high-purity quartz sand, which is widely used in many fields such as semiconductors, optics, and photovoltaics. During production and processing, high-purity quartz sand needs to be dried at high temperature before being transferred to the next process for processing. However, the temperature of the high-temperature quartz sand just out of the oven is relatively high, generally around 200 degrees Celsius. In order to ensure production safety, the dried quartz sand usually needs to be cooled by corresponding equipment.

[0003] Existing Chinese patent publication number: CN215002529U, the name of the patent is "Stepped Quartz Sand Particle Cooling Machine", which includes "a frame, an elevator, a cooling box, a circulating water structure and an exciter, with a simple structure, capable of realizing automated continuous production; the finished quartz sand and cooling water exchange heat in the cooling box, which can quickly reduce the temperature of the quartz sand after high-temperature roasting, and is suitable for cooling quartz sand particles."

[0004] Existing quartz sand cooling solutions mainly achieve heat transfer by contacting the wall surface of the heat exchange medium. Although this method has a certain cooling effect, due to the small size of quartz sand particles, the quartz sand particles are easily accumulated, resulting in most quartz sand being unable to effectively contact the wall surface of the heat exchange medium. A common method is to turn the quartz sand over to increase the contact rate between each piece of quartz sand and the wall surface of the heat exchange medium. However, the area of ​​the wall surface with the heat exchange medium is limited, and it is easy for quartz sand that has been cooled to repeatedly contact the wall surface of the heat exchange medium, resulting in poor cooling effect. Summary of the Invention

[0005] The object of the present invention is to provide a quartz sand heat exchange mechanism with a spiral channel to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A quartz sand heat exchange mechanism with a spiral channel includes a discharge pipe for outputting high-temperature quartz sand, a heat exchange and flow guiding mechanism is provided below the discharge pipe, and the heat exchange and flow guiding mechanism includes:

[0008] The receiving assembly includes a vertically arranged spiral channel tube, a tray for receiving quartz sand is concentrically fixed to the outside of the spiral channel tube, an opening is opened on the side of the spiral channel tube and communicates with the receiving space of the tray, and a mesh portion is opened on the bottom of the tray;

[0009] The air flow component comprises an air jet pipe located below the tray. The air flow jetted by the air jet pipe can blow the quartz sand on the mesh part into the opening.

[0010] Preferably, the heat exchange and flow guiding mechanism further comprises a mounting frame assembly, wherein the mounting frame assembly comprises a top plate located above the tray, and a plurality of support columns fixed to the ground are fixed to the bottom of the top plate.

[0011] Preferably, the top of the spiral channel tube is connected to the top plate through a suspension assembly, and the suspension assembly includes a connecting frame fixed to the top of the spiral channel tube, a connecting rod that movably passes through the top plate is fixed on the connecting frame, a baffle plate is fixed on the top of the connecting rod, and a plurality of support wheels are evenly distributed and installed on the bottom of the baffle plate.

[0012] Preferably, the mesh portion comprises an annular opening opened at the bottom of the tray, a plurality of evenly distributed connecting plates are fixed in the opening, and a breathable mesh supporting quartz sand is fixedly laid at the bottom of the tray.

[0013] Preferably, the bottom of the tray is a conical tray body, and when the air jet pipe sprays air toward the mesh portion, the connecting plate can be driven by the air jet so that the tray drives the spiral channel tube to rotate.

[0014] Preferably, a sand leveling assembly is provided on the top of the tray, and the sand leveling assembly includes a flat plate fixed to the support column, a through hole for the spiral channel tube to pass through is opened on the plate body of the flat plate, two side plates parallel to the inner bottom wall of the tray are fixed to the bottom of the flat plate, and a wedge-shaped funnel for receiving quartz sand from the discharge pipe is fixed on the flat plate.

[0015] Preferably, the nozzle jet line of the jet pipe is perpendicular to the bottom surface of the tray, and the two side panels form an air flow channel connected to the opening in the accommodating space of the tray. The air flow ejected by the jet pipe can drive quartz sand through the air flow channel into the spiral channel tube.

[0016] Preferably, the spiral channel tube includes a tube body, a spiral strip is fixed to the inner wall of the tube body, a spiral flow channel is formed between the pitch of the spiral strip and the inner wall of the tube body, and the spiral strip is wound and fixed with a connecting rod located in the tube body.

[0017] Preferably, a snap-in groove adapted to the flat plate is provided on the side surface of the support column, and a plurality of blind openings are provided on the side wall of the snap-in groove, wherein a spring having one end fixed to the side edge of the flat plate is fixed in each blind opening.

[0018] Preferably, a material receiving hopper is fixedly sleeved on the outside of the tube body, and a material leakage hole tangent to the outer wall of the tube body is opened at the bottom of the material receiving hopper.

[0019] In the above technical solution, the present invention provides a quartz sand heat exchange mechanism with a spiral channel, which receives the quartz sand falling from the discharge pipe through a receiving component, and the receiving component distributes the high-temperature quartz sand on the mesh part on the rotating tray. When the tray rotates and passes the air outlet end of the jet pipe, the jet airflow from the jet pipe blows up the quartz sand in the mesh part in turn and enters the spiral channel tube through the opening. The flatly stacked quartz sand is dispersed under the blowing of high-speed airflow, so that the intervals between the quartz sand particles are widened, and each quartz sand particle is blown by the airflow to achieve rapid heat dissipation, thereby improving the efficiency of heat exchange, and each portion of quartz sand can be blown by the airflow in turn as the tray rotates, thereby achieving orderly cooling of the quartz sand, which is beneficial to avoid repeated cooling of the cooled quartz sand and improves the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of a quartz sand heat exchange mechanism with a spiral channel according to the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of a tube body of a quartz sand heat exchange mechanism with a spiral channel according to the present invention;

[0023] Figure 3 This is a schematic diagram of a mesh portion of a quartz sand heat exchange mechanism with a spiral channel according to the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of a clamping groove of a quartz sand heat exchange mechanism with a spiral channel according to the present invention;

[0025] Figure 5 This is a cross-sectional schematic diagram of a sand averaging component of a quartz sand heat exchange mechanism with a spiral channel according to the present invention;

[0026] Figure 6 This is a schematic diagram of the assembly of a receiving hopper and a track ring of a quartz sand heat exchange mechanism with a spiral channel according to the present invention.

[0027] Description of reference numerals:

[0028] 1. Discharge pipe; 2. Receiving assembly; 2.1. Spiral channel pipe; 2.11. Pipe body; 2.12. Spiral strip; 2.13. Receiving hopper; 2.14. Leakage hole; 2.15. Track ring; 2.16. Track wheel; 2.2. Tray; 2.3. Opening; 2.4. Mesh portion; 2.41. Through hole; 2.42. Connecting plate; 2.43. Breathable mesh; 3. Airflow assembly; 3.1. Spray Air pipe; 3.2, flat-mouth pipe; 4, mounting frame assembly; 4.1, top plate; 4.2, support column; 4.21, snap-in groove; 4.22, blind opening; 4.23, spring; 5, suspension assembly; 5.1, connecting frame; 5.2, connecting rod; 5.3, baffle plate; 5.4, support wheel; 6, sand leveling assembly; 6.1, flat plate; 6.2, through-opening; 6.3, side plate; 6.4, wedge-shaped funnel. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1-6 The embodiment of the present invention provides a quartz sand heat exchange mechanism with a spiral channel, including a discharge pipe 1 for outputting high-temperature quartz sand, and a heat exchange and flow guiding mechanism is provided below the discharge pipe 1. The heat exchange and flow guiding mechanism includes:

[0031] The receiving assembly 2 includes a vertically arranged spiral channel tube 2.1. A tray 2.2 for receiving quartz sand is concentrically fixed to the outside of the spiral channel tube 2.1. An opening 2.3 is formed on the side of the spiral channel tube 2.1 and communicates with the receiving space of the tray 2.2. The bottom of the tray 2.2 is provided with a mesh portion 2.4.

[0032] The airflow assembly 3 includes an air jet pipe 3.1 located below the tray 2.2. The airflow ejected by the air jet pipe 3.1 can blow the quartz sand on the mesh portion 2.4 into the opening 2.3.

[0033] Specifically, the body of the discharge pipe 1 is connected to the discharge end of the high-temperature drying furnace, the tray 2.2 is located at the discharge position of the discharge pipe 1, and can receive the quartz sand flowing out of the discharge pipe 1. The bottom edge of the opening 2.3 is flush with the inner bottom wall of the tray 2.2. The mesh diameter of the mesh portion 2.4 is smaller than the diameter of the quartz sand. The mesh portion 2.4 can support the quartz sand particles. The nozzle of the air jet 3.1 is directed toward the bottom of the mesh portion 2.4, and the air jet from the air jet 3.1 can pass through the mesh portion 2.4. Thus, the quartz sand on the mesh portion 2.4 can be blown into the opening 2.3. During this process, the stacked quartz sand is dispersed by the high-speed airflow, so that the intervals between the quartz sand particles are widened. Each quartz sand particle is blown by the airflow to achieve rapid heat dissipation, thereby improving the efficiency of heat exchange. Moreover, each portion of quartz sand can be blown by the airflow in turn as the tray rotates, thereby achieving orderly cooling of the quartz sand, which is beneficial to avoid repeated cooling of the cooled quartz sand and improves the cooling effect.

[0034] In another embodiment provided by the present invention, the heat exchange and diversion mechanism also includes a mounting frame assembly 4, the mounting frame assembly 4 includes a top plate 4.1 located above the tray 2.2, the plate surface of the top plate 4.1 is parallel to the horizontal plane, and a plurality of support columns 4.2 fixed to the ground are fixed to the bottom of the top plate 4.1, the number of the support columns 4.2 is preferably four, and the column body of each support column 4.2 is perpendicular to the plate surface of the top plate 4.1.

[0035] In another embodiment provided by the present invention, the top of the spiral channel tube 2.1 is connected to the top plate 4.1 by a suspension assembly 5, and the suspension assembly 5 includes a connecting frame 5.1 fixed to the top of the spiral channel tube 2.1, and a connecting rod 5.2 that is movable through the top plate 4.1 is fixed on the connecting frame 5.1, and the axis of the connecting rod 5.2 coincides with the axis of the spiral channel tube 2.1, the rod body of the connecting rod 5.2 is located inside the spiral channel tube 2.1, and the bottom end of the rod body of the connecting rod 5.2 is flush with the bottom end of the spiral channel tube 2.1, and a baffle plate 5.3 is fixed on the top of the connecting rod 5.2, and the baffle plate 5.3 is located above the top plate 4.1. A plurality of support wheels 5.4 are evenly distributed on the bottom of the baffle plate 5.3, and each support wheel 5.4 provides support force for the baffle plate 5.3 above the top plate 4.1 and reduces the resistance of the baffle plate 5.3 to rotation on the top plate 4.1.

[0036] In another embodiment of the present invention, the mesh portion 2.4 includes an annular opening 2.41 formed at the bottom of the tray 2.2. A plurality of evenly distributed connecting plates 2.42 are fixed within the opening 2.41. A breathable mesh 2.43 for supporting quartz sand is fixedly laid at the bottom of the tray 2.2. The breathable mesh 2.43 is a metal mesh, and the mesh diameter of the breathable mesh 2.43 is smaller than the particle diameter of the quartz sand.

[0037] Furthermore, the bottom of the tray 2.2 is conical, with a taper ranging from 40 to 60 degrees, for example. When the air jet 3.1 ejects air toward the mesh portion 2.4, the connecting plate 2.42 is driven by the air flow, causing the tray 2.2 to rotate the spiral channel tube 2.1. In actual use, the air flow blows from the bottom of the air permeable mesh 2.43 to the top of the air permeable mesh 2.43. At this time, the air flow passes through the mesh of the air permeable mesh 2.43, so that the quartz sand particles are separated from the air permeable mesh 2.43 by the air flow and fall toward the opening 2.3. The quartz sand particles are also in a dispersed state during the flying process, which is beneficial to the cooling and heat dissipation of the quartz sand and completes the heat exchange between the quartz sand and the air flow.

[0038] In another embodiment provided by the present invention, a sand leveling assembly 6 is provided on the top of the tray 2.2. The sand leveling assembly 6 includes a flat plate 6.1 fixed to the support column 4.2. The surface of the flat plate 6.1 is parallel to the horizontal plane. A through hole 6.2 for the spiral channel tube 2.1 to movably pass through is opened on the plate body of the flat plate 6.1. Two side plates 6.3 parallel to the inner bottom wall of the tray 2.2 are fixed to the bottom of the flat plate 6.1. A wedge-shaped funnel 6.4 for receiving quartz sand from the discharge pipe 1 is fixed on the flat plate 6.1. Preferably, the side plates 6.3 and the wedge-shaped funnel 6.4 are symmetrically distributed on the tray 2.2.

[0039] In actual use, the quartz sand falling from the discharge pipe 1 falls directly into the wedge-shaped funnel 6.4. The bottom of the wedge-shaped funnel 6.4 is a long linear structure. Then the quartz sand in the wedge-shaped funnel 6.4 is linearly arranged and falls on the tray 2.2. At the same time, as the tray 2.2 rotates, the quartz sand is evenly spread on the tray 2.2. As the tray 2.2 continues to rotate, when the quartz sand passes through the side plate 6.3, if the laying thickness or raised part of some quartz sand is higher than the gap between the side plate 6.3 and the tray 2.2, the side plate 6.3 can scrape the quartz sand on the tray 2.2 again, thereby maintaining a good uniform thickness of the quartz sand on the tray 2.2, and also facilitating the subsequent blowing by the air jet pipe 3.1.

[0040] In another embodiment provided by the present invention, the nozzle jet line of the air jet tube 3.1 is perpendicular to the bottom surface of the tray 2.2, and the two side panels 6.3 are parallel to each other. The two side panels 6.3 form an airflow channel connected to the opening 2.3 within the storage space of the tray 2.2. The flat panel 6.1 forms the upper wall of the airflow channel. The airflow ejected by the air jet tube 3.1 can drive quartz sand through the airflow channel and into the spiral channel tube 2.1. The airflow channel can not only limit the dispersion range of the blown quartz sand, but also serve as a drainage and guidance function, so that the quartz sand and airflow are guided into the opening 2.3.

[0041] Specifically, the nozzle end of the jet pipe 3.1 is fixedly connected to a flat-mouthed pipe 3.2, which allows the airflow to be linearly sprayed on the mesh portion 2.4 when ejected. The other end of the jet pipe 3.1 is connected to an air supply device, such as a high-pressure airflow supply device such as a blower.

[0042] Another embodiment provided by the present invention, the spiral channel tube 2.1 includes a tube body 2.11, a spiral strip 2.12 is fixed to the inner wall of the tube body 2.11, and a spiral flow channel is formed between the pitch of the spiral strip 2.12 and the inner wall of the tube body 2.11. The spiral angle of the spiral flow channel is between 45 degrees and 75 degrees, and the spiral angle of the spiral flow channel is preferably 50 degrees. The spiral strip 2.12 is wound and fixed with the connecting rod 5.2 located in the tube body 2.11. In actual use, when the quartz sand enters the opening 2.3, the quartz sand flows along the spiral flow channel toward the bottom of the tube body 2.11 and finally falls into the tube body 2.11. At the same time, since the opening 2.3 is close to the top of the tube body 2.11 and there is no spiral strip 2.12 on the tube body 2.11 above the opening 2.3, the airflow entering the tube body 2.11 after completing the heat exchange escapes through the top of the tube body 2.11. In addition, according to the principle of negative pressure, the air flow rate above the tube body 2.11 is relatively large at this time, so that the cold air at the bottom of the tube body 2.11 flows toward the tube body 2.11 through the spiral flow channel, further cooling the quartz sand in the spiral flow channel, and improving the heat exchange effect.

[0043] In another embodiment provided by the present invention, a clamping groove 4.21 is provided on the side of the support column 4.2, which is compatible with the flat plate 6.1. The side wall of the clamping groove 4.21 is provided with a plurality of blind openings 4.22. A spring 4.23 is fixed in each blind opening 4.22, one end of which is fixed to the side edge of the flat plate 6.1. One end of the spring 4.23 extends out of the blind opening 4.22. The axis of the blind opening 4.22 is perpendicular to the axis of the support column 4.2, and the axis of the blind opening 4.22 is perpendicular to the edge surface of the flat plate 6.1. In actual use, when the flat plate 6.1 is subjected to external force, it can cause the flat plate 6.1 to shake slightly in the clamping groove 4.21. During the shaking process, the flat plate 6.1 is conducive to the smooth discharge of the wedge-shaped funnel 6.4. On the other hand, it is also conducive to the vibration of the spiral channel tube 2.1, thereby facilitating the smooth flow of quartz sand in the spiral flow channel.

[0044] In another embodiment provided by the present invention, a material receiving hopper 2.13 is fixedly sleeved on the outside of the tube body 2.11, the axis of the material receiving hopper 2.13 coincides with the axis of the tube body 2.11, the hopper mouth of the material receiving hopper 2.13 faces upward, and a leakage hole 2.14 tangent to the outer wall of the tube body 2.11 is opened at the bottom of the material receiving hopper 2.13. In actual use, the material receiving hopper 2.13 can automatically collect splashing quartz sand particles. The outer contour line of the material receiving hopper 2.13 is sleeved with a track ring 2.15 fixed to the support column 4.2, and a plurality of track wheels 2.16 that are adapted to slide with the track ring 2.15 are evenly distributed and fixed on the circumference of the hopper body of the material receiving hopper 2.13. In actual use, the material receiving hopper 2.13 rotates along the track ring 2.15 through the track wheels 2.16 as the tube body 2.11 rotates.

[0045] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A quartz sand heat exchange mechanism with a spiral channel, comprising a discharge pipe (1) for outputting high-temperature quartz sand, characterized in that: A heat exchange and flow guiding mechanism is provided below the discharge pipe (1), and the heat exchange and flow guiding mechanism comprises: A receiving assembly (2) comprising a rotatable spiral channel tube (2.1), a tray (2.2) for receiving quartz sand being concentrically fixed to the outside of the spiral channel tube (2.1), an opening (2.3) communicating with a receiving space of the tray (2.2) being provided on a side of the spiral channel tube (2.1), and a mesh portion (2.4) being provided on the bottom of the tray (2.2); An airflow assembly (3) comprising an air jet pipe (3.1) located below the tray (2.2), wherein the airflow jetted from the air jet pipe (3.1) is capable of blowing the quartz sand on the mesh portion (2.4) into the opening (2.3), wherein the nozzle end of the air jet pipe (3.1) is fixedly connected to a flat-mouthed tube (3.2), and the flat-mouthed tube (3.2) enables the airflow to be linearly sprayed onto the mesh portion (2.4); The heat exchange and flow guiding mechanism further comprises a mounting frame assembly (4), the mounting frame assembly (4) comprising a top plate (4.1) located above the tray (2.2), a plurality of support columns (4.2) fixed to the ground being fixed to the bottom of the top plate (4.1); A sand leveling assembly (6) is provided on the top of the tray (2.2), the sand leveling assembly (6) comprising a plane plate (6.1) fixed to the support column (4.2), a through hole (6.2) for the spiral channel tube (2.1) to movably pass through is provided on the plate body of the plane plate (6.1), two side plates (6.3) parallel to the inner bottom wall of the tray (2.2) are fixed to the bottom of the plane plate (6.1), and a wedge-shaped funnel (6.4) for receiving quartz sand from the discharge pipe (1) is fixed on the plane plate (6.1); The spiral channel tube (2.1) includes a tube body (2.11), the nozzle jet line of the jet tube (3.1) is perpendicular to the bottom surface of the tray (2.2), and the two side plates (6.3) form an air flow channel connected to the opening (2.3) in the accommodating space of the tray (2.2). The air flow ejected by the jet tube (3.1) can drive the quartz sand to enter the spiral channel tube (2.1) through the air flow channel, so that the cold air at the bottom of the tube body (2.11) flows toward the tube body (2.11) through the spiral flow channel, further cooling the quartz sand in the spiral flow channel. The mesh portion (2.4) includes an annular opening (2.41) formed at the bottom of the tray (2.2), a plurality of evenly distributed connecting plates (2.42) being fixed in the opening (2.41), and a breathable mesh (2.43) supporting quartz sand being fixedly laid at the bottom of the tray (2.2); The bottom of the tray (2.2) is a conical tray body. When the air jet pipe (3.1) sprays air toward the mesh portion (2.4), the connecting plate (2.42) can be driven by the air jet so that the tray (2.2) drives the spiral channel tube (2.1) to rotate.

2. The quartz sand heat exchange mechanism with a spiral channel according to claim 1, characterized in that: The top of the spiral channel tube (2.1) is connected to the top plate (4.1) via a suspension assembly (5), the suspension assembly (5) comprising a connecting frame (5.1) fixed to the top of the spiral channel tube (2.1), a connecting rod (5.2) movably penetrating the top plate (4.1) being fixed to the connecting frame (5.1), a baffle plate (5.3) being fixed to the top of the connecting rod (5.2), and a plurality of support wheels (5.4) being evenly distributed and mounted on the bottom of the baffle plate (5.3).

3. The quartz sand heat exchange mechanism with a spiral channel according to claim 2, characterized in that: A spiral strip (2.12) is fixed to the inner wall of the tube body (2.11), a spiral flow channel is formed between the pitch of the spiral strip (2.12) and the inner wall of the tube body (2.11), and the spiral strip (2.12) is intertwined and fixed with a connecting rod (5.2) located in the tube body (2.11).

4. The quartz sand heat exchange mechanism with a spiral channel according to claim 3, characterized in that: A snap-fitting groove (4.21) adapted to the plane plate (6.1) is provided on the side surface of the support column (4.2), and a plurality of blind openings (4.22) are provided on the side wall of the snap-fitting groove (4.21), wherein a spring (4.23) having one end fixed to the side edge of the plane plate (6.1) is fixed in each of the blind openings (4.22).

5. The quartz sand heat exchange mechanism with a spiral channel according to claim 4, characterized in that: A material receiving hopper (2.13) is fixedly sleeved on the outside of the tube body (2.11), and a material leakage hole (2.14) tangential to the outer wall of the tube body (2.11) is provided at the bottom of the material receiving hopper (2.13).

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