Bright bead drying room and bright bead drying method

Abstract

The present invention relates to the technical field of drying equipment, and specifically to a bright bead drying room and a bright bead drying method, including a drying room, the drying room including a first space and a second space for air circulation from the inside to the outside, the bright beads to be dried are placed in the first space, and a hot air generating mechanism is arranged on one side of the drying room, and the hot air generating mechanism transports hot air to the second space through an air duct. The present invention arranges the first space and the second space for air circulation inside the drying room, and uses the hot air generating mechanism to transport a heat source to the gap between the first space and the second space, thereby avoiding direct hot air entering the first space, but entering after a period of circulation, so that no large wind force is generated to aggravate the volatilization of the gunpowder component inside the bright beads, and an internal circulation is also formed inside the drying room, thereby reducing the input of heat energy and improving the energy utilization rate.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to a bright bead drying room and a bright bead drying method. Background Art

[0002] Bright beads are the effect drugs in fireworks. They look like small black beads and produce various colors when burned. The newly made bright beads contain a certain amount of water, so the water in the bright beads needs to be dried.

[0003] The prior art discloses a Chinese utility model patent with announcement number CN221425231U and patent name "A constant temperature heat pump drying room for fireworks beads", which specifically discloses a room body, a feed door is provided on one side of the room body, a handle is provided on the feed door, a material unloading trolley is provided inside the room body, a circulating air mechanism is provided inside the room body, a heat pump mechanism is provided outside the room body, and a control mechanism is provided on the side of the room body.

[0004] The above scheme achieves the purpose of increasing the energy efficiency ratio and reducing the waste of heat energy through the mutual cooperation of the heat pump main unit and the heat pump internal unit; the purpose of preventing external dust from entering the drying room is achieved through the filter screen of the fan group and the electric cleaning brush thereon; the purpose of timely adjusting the temperature and humidity inside the drying room is achieved through the mutual cooperation of the temperature and humidity detection probe and the control console.

[0005] However, in the actual drying process, the above scheme concentrates the fans on one side of the drying room, which will result in a single wind direction inside the drying room, and thus make the drying effect on the side far away from the fans poor. At the same time, the bright beads close to the fan side will be subjected to greater wind force, which will intensify the volatilization of the gunpowder components in the bright beads, which is not conducive to the safety inside the drying room.

[0006] Therefore, a bright bead drying room and a bright bead drying method are proposed to solve the above-mentioned problems. Summary of the invention

[0007] Technical issues solved:

[0008] In view of the above-mentioned shortcomings of the prior art, the present invention provides a bright bead drying room and a bright bead drying method, which can effectively solve the problem of poor bright bead drying effect caused by the single wind direction of the air supply system inside the drying room in the prior art.

[0009] Technical solution:

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] The present invention provides a bright bead drying room, comprising a drying room, wherein the drying room comprises, from the inside to the outside, a first space and a second space for air circulation, wherein bright beads to be dried are placed in the first space, and a hot air generating mechanism is arranged on one side of the drying room, and the hot air generating mechanism transports hot air to the second space through an air duct; wherein a gap having an inverted concave structure is located between the second space and the first space, and a filtering mechanism for filtering the air inside the first space is arranged on one side of the gap close to the air duct, and when the hot air generating mechanism generates hot air, the hot air flows into the filtering mechanism and enters the first space through the gap, and the hot air in the first space is filtered by the filtering mechanism and then recirculated to the gap.

[0012] Furthermore, an air inlet grille is provided at one end of the second space away from the air duct, and an air guide strip is provided on the inner wall of the second space along its width direction, and the air guide strip is inclined downward toward the side of the air inlet grille; wherein, a plurality of the air guide strips are provided and the plurality of air guide strips are equidistantly arranged vertically, and the widths of the plurality of the air guide strips gradually increase from top to bottom.

[0013] Furthermore, filter cotton is arranged at one end of the second space close to the air duct.

[0014] Furthermore, the filtering mechanism includes a dustproof net, which is arranged parallel to the filter cotton, and a plurality of concave surfaces distributed up and down are arranged on the end surface of the dustproof net facing the filter cotton. The filtering mechanism also includes a dustproof bag, which is arranged parallel to the side of the dustproof net away from the filter cotton, and a plurality of concave surfaces distributed up and down are arranged on the end surface of the dustproof bag facing the dustproof net.

[0015] Furthermore, the filtering mechanism also includes an anti-blocking structure, which includes a sewage removal tank arranged in the second space and located on one side of the dust bag and communicated with the interior of the gap, a sewage removal cabinet communicated with the sewage removal tank is arranged above the sewage removal tank, a first air vent communicated with the interior of the gap is arranged at the upper end of the sewage removal cabinet, and a second air vent communicated with the interior of the sewage removal tank is arranged at the lower end, and a movable filter plate with a Z-shaped cross-section is arranged in the sewage removal cabinet, the movable filter plate is tilted in the sewage removal cabinet and can move linearly along its tilt direction, and the first air vent and the second air vent are located on the moving path of the movable filter plate; wherein, one end face of the movable filter plate faces the dust bag, and a cleaning brush plate arranged inside the sewage removal cabinet is also arranged on the other side.

[0016] Furthermore, the hot air generating mechanism comprises a refrigerant plate, the refrigerant plate separates the filter mechanism from the gap, the air duct is connected to the interior of the filter mechanism and its outlet is vertically upward and located between the dust bag and the refrigerant plate.

[0017] Furthermore, the second space is also provided with an air vent for external air to enter the gap, the inlet of the air vent is arranged on a side of the refrigerant plate away from the dust bag and the air vent is located below the refrigerant plate.

[0018] Furthermore, a fan is arranged in the gap between the air inlet grille and the filter mechanism, and an air outlet surface of the fan faces the direction of the air inlet grille.

[0019] Furthermore, a track for pushing the material rack in is provided in the first space, and a water spray pipe for removing static electricity from the material rack is provided on one side of each track; wherein the track is inclined and slopes downward from the water outlet side of the water spray pipe.

[0020] This scheme also proposes a bright bead drying method, which is applied to the bright bead drying room mentioned above, and includes the following steps:

[0021] Step 1: Place the bright beads to be dried on the material rack, push the material rack into the first space, and close the drying room door;

[0022] Step 2: Generate hot air through the hot air generating mechanism and transport the hot air into the gap between the first space and the second space, and the hot air in the gap flows along the gap into the first space to dry the bright beads on the material rack;

[0023] Step 3: The hot air in the first space is recirculated into the gap under the negative pressure of the fan;

[0024] Step 4: After drying is completed, open the door of the drying room and use the water spray pipe to spray water into the track to remove static electricity on the material rack.

[0025] Beneficial effects:

[0026] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0027] The present invention arranges a first space and a second space for air circulation inside the drying room, and utilizes a hot air generating mechanism to transport a heat source to a gap between the first space and the second space, thereby preventing hot air from directly entering the first space. Instead, hot air enters the first space after circulating for a period of time, and does not generate a large wind force to aggravate the volatilization of the gunpowder components inside the bright beads. At the same time, an internal circulation is formed inside the drying room, thereby reducing heat energy input and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the drying room structure in an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the internal structure of the drying room in the embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of a drying room structure from a front view in an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of a side view of a drying room structure in an embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of a drying room structure from a top view in an embodiment of the present invention;

[0034] Figure 6 It is a schematic side view of the air inlet grille structure in an embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of the decomposition of the filtering structure in the embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the anti-blocking structure in an embodiment of the present invention;

[0037] Fig. 9 It is a schematic diagram of the side view of the anti-blocking structure in an embodiment of the present invention;

[0038] Fig.10 It is a schematic diagram of a side cross-section of the anti-blocking structure in an embodiment of the present invention (a state where hot air flows through the decontamination cabinet);

[0039] Fig.11 It is a schematic diagram of a side cross-section of the anti-blocking structure in an embodiment of the present invention (a state in which hot air flows through a sewage treatment tank).

[0040] The numbers in the figure represent respectively: 1. drying room; 10. hot air generating mechanism; 101. air duct; 102. refrigerant plate; 2. first space; 20. air inlet grille; 21. track; 211. water spray pipe; 3. second space; 31. air guide strip; 32. filter cotton; 33. air outlet; 4. gap; 41. filter mechanism; 411. dust net; 412. dust bag; 42. fan; 43. sewage treatment tank; 44. sewage treatment cabinet; 4401. first air vent; 4402. second air vent; 441. movable filter plate; 442. cleaning brush plate; 45. hot water circulation pipe. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above, obliquely above, or on the surface of the second feature, the second feature being supported and fixed by the first feature, or simply indicating that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] The present invention will be further described below in conjunction with the embodiments.

[0046] Example:

[0047] See attached Figure 1-11 , this embodiment proposes a bright bead drying room.

[0048] The drying room 1 includes a first space 2 and a second space 3 for air circulation from the inside to the outside. Bright beads to be dried are placed in the first space 2. It should be noted that the bright beads in this embodiment are placed on a bright bead tray, and the bright bead tray is placed by a cart. Before drying, the operator pushes the cart into the first space 2. Universal wheels are arranged at the bottom of the cart, and the universal wheels are arranged in a self-locking structure. The bright bead tray and the cart are well-known technologies and will not be described in detail here. They are not shown in the drawings.

[0049] A hot air generating mechanism 10 is arranged on one side of the drying room 1, and the hot air generating mechanism 10 transports hot air to the second space 3 through the air duct 101; specifically, the hot air generating mechanism 10 includes an external unit arranged outside the drying room 1 and a refrigerant plate 102 inside the drying room, and the heat energy generated by the external unit is transported to the refrigerant plate 102 through the air duct 101 and transmitted, and the heat energy transmission method is a well-known technology of common equipment such as compressors, which will not be elaborated here.

[0050] In the present embodiment, there is a gap 4 with an inverted concave structure between the second space 3 and the first space 2. When heat energy enters the gap 4, it will flow in the gap 4. An air inlet fence 20 is provided at the end of the first space 2 away from the air duct 101, and the end of the first space 2 facing the air inlet fence 20 has a plurality of gaps. The hot air in the gap 4 enters into the first space 2 through the air inlet fence 20 to dry the bright beads stored on the cart inside the first space 2.

[0051] It should be noted that, in the present embodiment, the inner wall of the second space 3 is provided with an air guide strip 31 along its width direction, and the air guide strip 31 is inclined downward toward the side of the air inlet grille 20; wherein, a plurality of air guide grilles 30 are provided and the plurality of air guide grilles 30 are equidistantly arranged up and down, and the width of the plurality of air guide grilles 30 gradually increases from top to bottom.

[0052] Since hot air tends to gather at the upper level, the size of the windward surface of the air guide strip 31 gradually increases, that is, the width of the plurality of air guide grilles 30 gradually increases from top to bottom.

[0053] In order to save energy, in this embodiment, a filtering mechanism 41 for filtering the air inside the first space 2 is provided on one side of the gap 4 close to the air duct 101. When the hot air generating mechanism 10 generates hot air, the hot air flows into the filtering mechanism 41 and enters the first space 2 through the gap 4, and the hot air in the first space 2 is filtered by the filtering mechanism 41 and re-circulated to the gap 4.

[0054] In this embodiment, the filter mechanism 41 is divided into three layers. First, a filter cotton 32 is provided at one end of the second space 3 close to the air duct 101, which can perform preliminary filtering of larger particles of impurities (small particles of impurities in the fireworks medicine).

[0055] Secondly, the filter mechanism 41 includes a dustproof net 411, and the dustproof net 411 is arranged in parallel with the filter cotton 32;

[0056] The dust-proof net 411 is provided with a plurality of concave surfaces distributed up and down on the end face facing the filter cotton 32. In the present embodiment, by providing a plurality of concave surfaces on the dust-proof net 411 facing the filter cotton 32, the contact area with the air can be increased and the filtering effect can be improved. It should be noted that the filtering mesh number of the dust-proof net 411 is smaller than the filtering mesh number of the filter cotton 32.

[0057] Furthermore, the filter mechanism 41 further includes a dust bag 412, which is arranged in parallel on a side of the dust net 411 away from the filter cotton 32;

[0058] The dust bag 412 is provided with a plurality of concave surfaces distributed up and down on the end surface facing the dust net 411. Similarly, providing a plurality of concave surfaces can increase the contact area with the air and further improve the filtering effect. The filtering mesh number of the dust bag 412 is smaller than the filtering mesh number of the dust net 411.

[0059] It is worth mentioning that the concave surface on the dustproof net 411 is acute-angled, while the concave surface on the dustproof bag 412 is semicircular, and the concave surfaces distributed above and below are connected to each other, which can maximize the contact with the airflow and filter the gas in the airflow.

[0060] The refrigerant plate 102 separates the filter mechanism 41 from the gap 4 , and the air duct 101 is connected to the inside of the filter mechanism 41 , and the pipe opening of the air duct 101 is vertically upward and located between the dust bag 412 and the refrigerant plate 102 .

[0061] In this embodiment, the air duct 101 is provided with two openings, which are distributed along the width direction of the drying room 1 .

[0062] When the airflow is emitted upward through the two openings of the air duct 101 , it enters the space between the dust bag 412 and the refrigerant plate 102 . The air is heated by the refrigerant plate 102 , and hot air is provided to the gap 4 .

[0063] It should be noted that, since the mouth of the air duct 101 is vertically upward and the space between the dust bag 412 and the refrigerant plate 102 is lower, since the hot air flow will surge upward, this design can effectively avoid the hot air flow from overflowing and improve the thermal energy utilization rate.

[0064] A fan 42 is arranged in the gap 4 between the air inlet grille 20 and the filter mechanism 41, and the air outlet surface of the fan 42 faces the direction of the air inlet grille 20, and the air inlet surface of the fan 42 faces the direction of the refrigerant plate 102, so that the fan 42 will form a negative pressure at the air inlet surface, accelerate the circulation of airflow in the direction of one side of the refrigerant plate 102, and at the same time guide the airflow to the air inlet grille 20.

[0065] The second space 3 is further provided with an air vent 33 for external air to enter the gap 4 . The inlet of the air vent 33 is arranged on a side of the refrigerant plate 102 away from the dust bag 412 and the air vent 33 is located below the refrigerant plate 102 .

[0066] As a result, the cold air is relatively gathered at the bottom, and the cold air can be fully heated by the refrigerant plate 102 without disturbing the hotter air in the upper layer.

[0067] The air vents 33 are provided at two locations. After a period of drying, the air in the drying room 1 has a certain humidity. At this time, the internal air needs to be ventilated. At this time, the air vents 33 can be opened to allow the outside air to enter.

[0068] It should be noted that the present solution also has an anti-blocking structure that can prevent the hot air circulation speed from slowing down.

[0069] In this embodiment, the anti-blocking structure is arranged on the side of the dust bag 412 away from the dust net 411. For safety reasons, the anti-blocking structure can further reduce the dust content in the hot air and can filter the hot air flowing from the side of the dust net 411.

[0070] Specifically, the anti-blocking structure includes a sewage removal tank 43 which is arranged in the second space 3 and is located on one side of the dust bag 412 and is communicated with the interior of the gap 4. A sewage removal cabinet 44 which is communicated with the sewage removal tank 43 is provided above the sewage removal tank 43. The bottom of the sewage removal cabinet 44 is connected to the sewage removal tank 43 through a water pipe. It should be noted that the sewage removal tank 43 is filled with cleaning liquid, the water pipe is inserted into the cleaning liquid, and a gas outlet is opened above the liquid surface in the sewage removal tank 43, so that the hot air discharged from the inside of the sewage removal cabinet 44 will be purified by the cleaning liquid and discharged from the gas outlet.

[0071] A first air vent 4401 communicating with the interior of the gap 4 is provided on one side of the upper end of the dirt removal cabinet 44, and a second air vent 4402 communicating with the interior of the water removal tank 43 is provided at the lower end thereof. A movable filter plate 441 with a Z-shaped cross-section is provided in the dirt removal cabinet 44, and the air vents opened at the upper and lower ends of the dirt removal cabinet 44 are respectively located at the upper and lower ends of the movable filter plate 441, and the first air vent 4401 and the second air vent 4402 are located on the moving path of the movable filter plate 441.

[0072] Since the movable filter plate 441 is Z-shaped, it can only be staggered with one vent during its movement, that is, when the upper end of the movable filter plate 441 is staggered with the first vent 4401 above, the lower end of the movable filter plate 441 will not block the second vent 4402 below. When hot air passes through, since the second vent 4402 below is closer to the air source and the first vent 4401 above is blocked, the air will enter the sewage treatment tank 43 from the second vent 4402 below.

[0073] On the contrary, when the upper end of the movable filter plate 441 and the first air vent 4401 above are not in contact with each other, the lower end of the movable filter plate 441 and the second air vent 4402 below are blocked together, and hot air will pass through the movable filter plate 441 and enter the gap through the first air vent 4401 above.

[0074] In this embodiment, the movable filter plate 441 can be linearly movable, and is tiltedly arranged in the decontamination cabinet 44 and can be linearly moved along its tilted direction;

[0075] One side end face of the movable filter plate 441 faces the dust bag 412. When too much dust and flocculent impurities accumulate on the movable filter plate 441 and affect the smooth passage of gas, the force on the side of the movable filter plate 441 facing the gas flow will increase, and it will be pushed in its inclined direction, thereby blocking the upper vent and communicating with the lower vent.

[0076] It should be noted that air ports for communicating with the vents are provided on the upper and lower end surfaces of the movable filter plate 441 .

[0077] When the movable filter plate 441 reaches a certain position and height, a cleaning brush plate 442 is provided on the other side of the movable filter plate 441 and is located inside the dirt removal cabinet 44. The cleaning brush plate 442 can be made of a combination of soft and hard bristles. After contacting the filter holes on the movable filter plate 441, the filter holes will be cleaned. The amount of gas passing through the unblocked movable filter plate 441 will increase, and the cleaning brush plate 442 will slide back under the action of gravity.

[0078] It is worth noting that the filter holes on the movable filter plate 441 in this embodiment are arranged at the lower position of the movable filter plate 441, so that most of the hot air passing through the movable filter plate 441 flows from the bottom.

[0079] In addition, a hot water circulation pipe 45 is provided on the upper end surface of the dirt removal cabinet 44, which is connected to the interior of the dirt removal tank 43 through a water pump. Since the air entering the dirt removal tank 43 has heat, the hot water circulation pipe 45 can be heated. The hot water circulation pipe 45 is exposed in the channel of the gap, heating and insulating the airflow flowing in the gap 4.

[0080] Furthermore, after drying, the air inside the drying room 1 contains a certain amount of gunpowder components, and there may be a certain amount of static electricity on the cart. It may be dangerous to open the door of the drying room 1 rashly. In this embodiment, a track 21 for pushing the material rack is provided in the first space 2, and the universal wheels at the bottom of the cart roll inside the track 21, and a water pipe 211 for removing static electricity from the material rack is provided on one side of each track 21. A water pipe is provided on the innermost side of the drying room 1 along its length direction, and a plurality of water pipes 211 are provided on the water pipe in a direction corresponding to one side of the track 21.

[0081] In this embodiment, the track 21 is inclined and tilts downward from the water outlet side of the water spray pipe 211 . After spraying water to clean the static electricity on the cart, the water flows out of the drying room 1 from the track 21 .

[0082] It is worth mentioning that the door of the drying room 1 in this embodiment is an electric switch. After the bright beads are dried, there is no need to close it manually, which improves safety performance.

[0083] This scheme also proposes a bright bead drying method, which is applied to the bright bead drying room mentioned above, and includes the following steps:

[0084] Step 1: Place the bright beads to be dried on the material rack, push the material rack into the first space 2, and then close the drying room door;

[0085] Step 2: The hot air is generated by the hot air generating mechanism 10 and transported into the gap 4 between the first space 2 and the second space 3. The hot air in the gap 4 flows along the gap 4 into the first space 2 to dry the bright beads on the material rack;

[0086] Step 3: The hot air in the first space 2 is recirculated into the gap 4 under the negative pressure of the fan 42;

[0087] Step 4: After the drying is completed, the drying room door is opened, and the water spray pipe 211 sprays water into the track 21 to remove the static electricity on the material rack.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bright bead drying room, comprising a drying room (1), characterized in that: The drying room (1) comprises, from the inside to the outside, a first space (2) and a second space (3) through which air circulates; the first space (2) contains bright beads to be dried; a hot air generating mechanism (10) is provided on one side of the drying room (1); the hot air generating mechanism (10) transports hot air to the second space (3) through an air duct (101); A gap (4) having an inverted concave structure is located between the second space (3) and the first space (2); a filtering mechanism (41) for filtering the air inside the first space (2) is provided on one side of the gap (4) close to the air duct (101); when the hot air generating mechanism (10) generates hot air, the hot air flows into the filtering mechanism (41) and enters the first space (2) through the gap (4); the hot air in the first space (2) is filtered by the filtering mechanism (41) and then recirculated to the gap (4); An air inlet fence (20) is provided at one end of the first space (2) away from the air duct (101), and an air guide strip (31) is provided on the inner wall of the second space (3) along its width direction, wherein the air guide strip (31) is inclined downwardly toward one side of the air inlet fence (20); There are a plurality of the air guide strips (31), and the plurality of air guide strips (31) are arranged equidistantly from top to bottom, and the widths of the plurality of air guide strips (31) gradually increase from top to bottom.

2. A bright bead drying room according to claim 1, characterized in that: A filter cotton (32) is provided at one end of the second space (3) close to the air duct (101).

3. A bright bead drying room according to claim 2, characterized in that: The filtering mechanism (41) comprises a dustproof net (411) and a dustproof bag (412); the dustproof net (411) is arranged in parallel with the filter cotton (32); a plurality of concave surfaces distributed vertically are arranged on an end surface of the dustproof net (411) facing the filter cotton (32); the dustproof bag (412) is arranged in parallel on a side of the dustproof net (411) away from the filter cotton (32); and a plurality of concave surfaces distributed vertically are arranged on an end surface of the dustproof net (411) facing the filter cotton (32).

4. A bright bead drying room according to claim 3, characterized in that: The filtering mechanism (41) further comprises an anti-blocking structure, the anti-blocking structure comprising a sewage removal tank (43) arranged in the second space (3) and located on one side of the dustproof bag (412) and communicating with the interior of the gap (4); a sewage removal cabinet (44) communicating with the sewage removal tank (43) is arranged above the sewage removal tank (43); a first vent (4401) communicating with the interior of the gap (4) is arranged at the upper end of the sewage removal cabinet (44); a second vent (4402) communicating with the interior of the sewage removal tank (43) is arranged at the lower end; a movable filter plate (441) having a Z-shaped cross section is arranged in the sewage removal cabinet (44); the movable filter plate (441) is arranged obliquely in the sewage removal cabinet (44) and can move linearly along its oblique direction; and the first vent (4401) and the second vent (4402) are located on the moving path of the movable filter plate (441); One end surface of the movable filter plate (441) faces the dust bag (412), and the other side is provided with a cleaning brush plate (442) disposed inside the dirt removal cabinet (44).

5. A bright bead drying room according to claim 4, characterized in that: The hot air generating mechanism (10) comprises a refrigerant plate (102), the refrigerant plate (102) separating the filter mechanism (41) from the gap (4), the air duct (101) communicating with the interior of the filter mechanism (41) with its pipe opening facing vertically upwards and located between the dust bag (412) and the refrigerant plate (102).

6. A bright bead drying room according to claim 5, characterized in that: The second space (3) is further provided with an air vent (33) for external air to enter the gap (4); the inlet of the air vent (33) is arranged on a side of the refrigerant plate (102) away from the dust bag (412), and the air vent (33) is located below the refrigerant plate (102).

7. A bright bead drying room according to claim 6, characterized in that: A fan (42) is arranged in the gap (4) between the air inlet grille (20) and the filter mechanism (41), and an air outlet surface of the fan (42) faces the direction of the air inlet grille (20).

8. A bright bead drying room according to claim 7, characterized in that: A track (21) for pushing the material rack into the first space (2) is provided, and a water spray pipe (211) for removing static electricity from the material rack is provided on one side of each track (21); The track (21) is inclined and slopes downward from the water outlet side of the water spray pipe (211).

9. A method for drying bright beads, applied to a bright bead drying room as claimed in claim 8, characterized in that: The steps include: Step 1: Place the bright beads to be dried on the material rack, push the material rack into the first space (2), and then close the drying room door; Step 2: generating hot air through the hot air generating mechanism (10) and conveying the hot air into the gap (4) between the first space (2) and the second space (3); the hot air in the gap (4) flows along the gap (4) into the first space (2) to dry the bright beads on the material rack; Step 3: The hot air in the first space (2) is recirculated into the gap (4) under the action of the negative pressure of the fan (42); Step 4: After the drying is completed, the drying room door is opened, and the water spray pipe (211) sprays water into the track (21) to remove static electricity on the material rack.

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