Cloth drying machine

Abstract

The utility model provides a cloth drying machine, and belongs to the technical field of drying equipment. Comprising a dryer body, the dryer body comprises a conveyor, a microwave drying mechanism is installed at the top of the conveyor, cloth is dried by the microwave drying mechanism after being conveyed by the conveyor, and an exhaust port in the top of the microwave drying mechanism is connected with a centrifugal fan through a pipeline. The pre-drying mechanism comprises a shell installed on a support on the side face of the conveyor, an air outlet of the centrifugal fan communicates with an air inlet of the shell, and a heating assembly is installed in the shell. Through the arrangement of the heating assembly, hot steam flows through the interior of the heating assembly, external air flows through the exterior of the heating assembly, heat exchange between the hot steam and the external air is achieved through the heating assembly, utilization of heat in the hot steam is achieved, and waste of the heat in the hot steam is effectively prevented; and hot air subjected to heat exchange is blown to the cloth from the preheating cover, so that the cloth is pre-dried.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying equipment technical field, especially relate to a cloth drying machine. BACKGROUND

[0002] The cloth needs to be dried after being cleaned, and the microwave drying machine is usually used for drying, the cleaned cloth is placed on the conveyor of the microwave drying machine, the conveyor belt of the conveyor is operated to convey the cloth, the cloth is dried by the microwave drying method during the conveying process, and the hot steam generated during the drying is sucked by the centrifugal fan and discharged outward from the exhaust pipe.

[0003] The common cloth drying machine uses the microwave drying method to dry the cleaned cloth during use, the hot steam generated during the drying is sucked by the centrifugal fan and discharged outward from the exhaust pipe, however, a large amount of heat is contained in the discharged hot steam, the heat in the hot steam is not utilized and is directly discharged, thereby causing the waste of heat, therefore, the cloth drying machine is provided to meet the requirement. SUMMARY

[0004] The utility model provides a cloth drying machine to solve the problem of heat waste caused by the heat in the hot steam not being utilized and being directly discharged.

[0005] To solve the above technical problem, the utility model provides the following technical scheme:

[0006] A cloth drying machine, including drying machine body, drying machine body includes conveyor, the conveyor top is equipped with microwave drying mechanism, and the cloth is dried by the microwave drying mechanism after being conveyed by the conveyor, and the exhaust port at the top of the microwave drying mechanism is connected with the centrifugal fan through the pipeline, and the cloth drying machine further includes:

[0007] Pre-drying mechanism, the pre-drying mechanism includes the shell installed on the side support of conveyor, the centrifugal fan air outlet is communicated with the shell air inlet, the heating assembly is installed in the shell, the shell top is equipped with the exhaust fan and the air deflector cover, the exhaust fan is located in the air deflector cover, the bottom hole and the top hole for the outside air flow are formed in the shell top and bottom respectively, the conveyor top is equipped with the preheating cover, the preheating cover is fixed on the side of the microwave drying mechanism, and the air deflector cover is communicated with the preheating cover;

[0008] When working, the hot steam generated by heating the cloth passes through the heating assembly under the action of the centrifugal fan, the outside air passes through the heating assembly under the action of the exhaust fan, the outside air and the hot steam exchange heat at the heating assembly, the heated air flows to the cloth on the conveyor from the preheating cover, and the heat-exchanged hot steam is discharged from the side hole formed in the side of the shell.

[0009] Preferably, the heating assembly comprises a hole plate fixed in the shell, a plurality of circular tubes are fixed on the side of the hole plate away from the centrifugal fan, the end of the circular tube away from the hole plate is fixedly connected with the inner wall of the shell on the side away from the centrifugal fan, the circular tube is communicated with the small holes on the hole plate and the side holes on the side of the shell, a reducing head is fixed on the side of the shell away from the centrifugal fan, and an exhaust pipe is arranged on the side of the reducing head.

[0010] Preferably, a drain port is arranged at the bottom of the reducing head, and a drain valve is arranged at the bottom of the reducing head corresponding to the drain port.

[0011] Preferably, the circular tube is inclined, and the height of the end of the circular tube close to the centrifugal fan is higher than the height of the end of the circular tube away from the centrifugal fan.

[0012] Preferably, a plurality of annular fins are arranged on the outer wall of the circular tube and are uniformly arranged along the axis of the circular tube.

[0013] Preferably, a group of guide plates are arranged on the outer wall of the circular tube, the number of each group of guide plates is two, the two guide plates are symmetrically distributed, the two guide plates are fixed on the upper half of the annular fin, and the gap between the top portions of the two guide plates forms an air flow channel.

[0014] Preferably, the guide plate comprises an arc-shaped portion and an inclined portion connected in sequence, the arc-shaped portion is fixed on the upper half of the annular fin, the center of the arc-shaped portion is located on the central axis of the circular tube, the air flow channel is located between the adjacent two inclined portions, and the width of the air flow channel gradually decreases from bottom to top.

[0015] Preferably, a guide strip is fixed on the inner wall of the arc-shaped portion, the end of the guide strip is fixedly connected with the side of the annular fin, and the guide strip is used for guiding air flow.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the scheme, the heating assembly is arranged, hot steam flows through the inside of the heating assembly, external air flows through the outside of the heating assembly, heat exchange between the hot steam and the external air is realized by the heating assembly, the utilization of heat in the hot steam is realized, the waste of heat in the hot steam is effectively prevented, and the pre-drying of the cloth is realized by blowing the hot air after heat exchange to the cloth from the preheating cover.

[0018] The circular tube is arranged, the circular tube is used for heat exchange between the hot steam and the external air, the hot steam with high water content condenses on the inner wall of the circular tube when flowing through the circular tube, the inclined circular tube is used for accelerating the discharge of the condensed water in the circular tube, the condensed water is prevented from accumulating in the circular tube, and the interference of the condensed water on the heat exchange effect between the hot steam and the external air is reduced.

[0019] By setting the flow guide plate, the flow guide plate is installed at the position of the outer wall of the circular pipe, when the external air flows from bottom to top, first contacts the bottom of the circular pipe to exchange heat, and then flows upwards along the outer wall of the circular pipe, and after being guided by the flow guide plate, flows from the top of the outer wall of the circular pipe, so that the hot steam flowing in the circular pipe can also exchange heat with the external air at the top of the outer wall of the circular pipe, prevents the existence of heat exchange dead angle, improves the heat exchange capacity of the position of the circular pipe, and the width of the air flow channel formed between the adjacent two inclined portions gradually decreases from bottom to top, the air flow channel with gradually decreasing width is used to gradually increase the time of the external air flowing through the position of the circular pipe during the process of flowing from bottom to top, thereby further improving the heat exchange efficiency between the hot steam and the external air.

[0020] By setting the flow guide strip, when the external air flows along the inner wall of the arc-shaped portion of the flow guide plate and passes through the position of the flow guide strip, a small part of the airflow is guided to the position of the circular pipe under the guiding action of the flow guide strip, and most of the airflow still flows upwards between the arc-shaped portion and the outer wall of the circular pipe, the small part of the airflow guided has an intercepting effect on the large airflow, thereby further increasing the contact time of the external air and the outer wall of the circular pipe, and thereby further improving the heat exchange efficiency between the hot steam and the external air. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the utility model;

[0022] Figure 2 It is a shell position three-dimensional structure schematic view of the utility model;

[0023] Figure 3 It is a shell internal section view of the utility model;

[0024] Figure 4 It is a circular pipe distribution state schematic view of the utility model;

[0025] Figure 5 It is a circular pipe position three-dimensional structure schematic view of the utility model;

[0026] Figure 6 It is a ring fin position three-dimensional structure schematic view of the utility model;

[0027] Figure 7 It is a flow guide strip position section view of the utility model.

[0028] In the drawing: 1, conveyor; 2, microwave drying mechanism; 3, centrifugal fan; 4, pre-drying mechanism; 5, shell; 6, heating assembly; 7, circular pipe; 8, flow guide plate; 9, arc-shaped portion; 10, inclined portion; 11, ring fin; 12, perforated plate; 13, exhaust fan; 14, air guide cover; 15, preheating cover; 16, reducing head; 17, flow guide strip.

[0029] As shown in the figure, in order to clearly realize the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for the need of illustration, and is not intended to limit the utility model in the specific structure, device and environment, according to the specific need, the ordinary skilled in the art can adjust or modify these devices and environment, and the adjustment or modification still includes in the range of the appended claims. DETAILED DESCRIPTION

[0030] The cloth drying machine provided by the utility model will be described in detail below in combination with the drawings and specific embodiments. Meanwhile, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be adopted by the skilled in the art to implement some known technologies; and the drawings are only used to describe the embodiments more specifically, and are not intended to specifically limit the utility model.

[0031] As Figures 1-7 shown, the embodiment of the utility model provides a cloth drying machine, including drying machine body, drying machine body includes conveyer 1, the top of conveyer 1 is equipped with microwave drying mechanism 2, microwave drying mechanism 2 is mainly composed of outer cover and microwave generator, and the drying treatment of cloth is realized by the mode of microwave drying, the cloth is dried by microwave drying mechanism 2 after being conveyed by conveyer 1, the exhaust port at the top of microwave drying mechanism 2 is connected with centrifugal fan 3 through pipeline, and it further includes:

[0032] Pre-drying mechanism 4, pre-drying mechanism 4 includes shell 5 installed on the side support of conveyer 1, the air outlet of centrifugal fan 3 is communicated with the air inlet of shell 5, heating assembly 6 is installed in shell 5, exhaust fan 13 and air deflector 14 are installed on the top of shell 5, exhaust fan 13 is located in air deflector 14, bottom hole and top hole for external air flow are formed in the top and bottom of shell 5 respectively, preheating cover 15 is installed on the top of conveyer 1, preheating cover 15 is fixed on the side of microwave drying mechanism 2, air deflector 14 is communicated with preheating cover 15;

[0033] In operation, the hot steam generated by heating the cloth passes through the heating assembly 6 under the action of the centrifugal fan 3, the external air passes through the outside of the heating assembly 6 under the action of the air extractor 13, the external air exchanges heat with the hot steam at the heating assembly 6, the heated air flows to the cloth on the conveyor 1 from the preheating cover 15, and the heat-exchanged hot steam is discharged from the side hole of the shell 5. By arranging the pre-drying mechanism 4, the heat of the hot steam generated by the microwave drying mechanism 2 can be used to pre-dry the cloth before entering the microwave drying mechanism 2, the heat is recycled and utilized, and the heat waste is reduced. Meanwhile, by cooperation of the shell 5, the heating assembly 6, the air extractor 13, the air guide cover 14 and the preheating cover 15, a complete heat exchange and pre-drying airflow path is formed, the stable pre-drying process is ensured, and the overall efficiency of cloth drying is improved.

[0034] As shown in Figure 3 and Figure 4 , in the embodiment, the heating assembly 6 comprises a hole plate 12 fixed in the shell 5, a plurality of circular tubes 7 are fixed on the side of the hole plate 12 away from the centrifugal fan 3, the end of the circular tube 7 away from the hole plate 12 is fixedly connected to the inner wall of the shell 5 away from the centrifugal fan 3, the circular tube 7 is communicated with the small holes on the hole plate 12 and the side hole of the shell 5, a reducing head 16 is fixed on the side of the shell 5 away from the centrifugal fan 3, and an exhaust pipe is installed on the side of the reducing head 16. The hot steam flows through the circular tube 7 and exchanges heat with the external air, the heat-exchanged hot steam is discharged from the exhaust pipe after passing through the reducing head 16, the hole plate 12 plays a role of fixing the circular tube 7 and distributing the hot steam, the circular tube 7 is used for heat exchange between the hot steam and the external air, and the reducing head 16 is convenient for collecting the hot steam discharged from the plurality of circular tubes 7 and discharging the hot steam from the exhaust pipe, so that the hot steam is discharged more smoothly.

[0035] As shown in Figure 3 , in the embodiment, a drain port is arranged at the bottom of the reducing head 16, and a drain valve is installed at the bottom of the reducing head 16 corresponding to the drain port. The arrangement of the drain port and the drain valve is convenient for timely discharging the condensed water collected in the reducing head 16, and prevents the condensed water from accumulating in the reducing head 16 to affect the flow of the hot steam.

[0036] As shown in Figure 3 , in the embodiment, the circular tube 7 is inclined, and the height of the end of the circular tube 7 close to the centrifugal fan 3 is higher than the height of the end of the circular tube 7 away from the centrifugal fan 3. The inclined arrangement of the circular tube 7 utilizes the gravity to accelerate the discharge speed of the condensed water generated when the hot steam flows in the circular tube 7, prevents the condensed water from accumulating in the circular tube 7, reduces the interference of the condensed water to the heat exchange effect between the hot steam and the external air, and ensures the heat exchange efficiency of the circular tube 7.

[0037] As shown in Figure 5As shown in the drawings, in the embodiment, the outer wall of the circular tube 7 is sleeved with a plurality of annular fins 11 arranged uniformly along the axis of the circular tube 7. The annular fins 11 increase the contact area of the circular tube 7 with the ambient air, so that the ambient air can exchange heat with the circular tube 7 more fully, and further improve the heat exchange efficiency between the hot steam and the ambient air.

[0038] As shown in the drawings, Figures 3-7 In the embodiment, a set of guide plates 8 is arranged on the outer wall of the circular tube 7. Each set of guide plates 8 includes two guide plates 8 which are symmetrically distributed and are both fixed on the upper half of the annular fin 11. The gap between the top of the two guide plates 8 forms an air flow channel. The guide plate 8 can guide the flowing ambient air, so that the ambient air can contact the outer wall of the circular tube 7 more fully, avoiding the existence of heat exchange dead angle, improving the heat exchange capacity of the position of the circular tube 7, and ensuring the orderly flow of the ambient air, facilitating heat exchange.

[0039] As shown in the drawings, Figures 4-7 In the embodiment, the guide plate 8 includes an arc-shaped part 9 and an inclined part 10 connected in sequence. The arc-shaped part 9 is fixed on the upper half of the annular fin 11, and the center of the arc-shaped part 9 is located on the central axis of the circular tube 7. The air flow channel is located between the adjacent two inclined parts 10, and the width of the air flow channel gradually decreases from bottom to top. The arc-shaped part 9 can guide the ambient air to flow upwards along the outer wall of the circular tube 7, so that the ambient air contacts the outer wall of the circular tube 7 more fully. The air flow channel formed between the two inclined parts 10, which gradually decreases in width from bottom to top, can limit the flow speed of the ambient air, so that the time of the ambient air flowing through the circular tube 7 located at the upper position gradually increases during the process of flowing from bottom to top, thereby further improving the heat exchange efficiency between the hot steam and the ambient air.

[0040] As shown in the drawings, Figure 6 and Figure 7 In the embodiment, the inner wall of the arc-shaped part 9 is fixed with a guide strip 17, and the end of the guide strip 17 is fixedly connected with the side surface of the annular fin 11. The guide strip 17 is used for guiding the air flow. The guide strip 17 can guide the ambient air flowing through the inner wall of the arc-shaped part 9, so that a small part of the air flow flows to the position of the circular tube 7, and most of the air flow still flows upwards between the arc-shaped part 9 and the outer wall of the circular tube 7. The small part of the air flow guided by the guide strip 17 has an intercepting effect on the large air flow, further increasing the contact time of the ambient air with the outer wall of the circular tube 7, thereby further improving the heat exchange efficiency between the hot steam and the ambient air. At the same time, the annular fin 11 is located between the adjacent two guide strips 17, so that the guide strip 17 can also realize the preliminary positioning of the guide plate 8 on the annular fin 11, laying a foundation for subsequent welding and fixation.

[0041] Working principle: when working, the cloth is conveyed by the conveyor 1, the microwave drying mechanism 2 dries the cloth, the hot steam generated by the microwave drying mechanism 2 to the cloth under the action of the centrifugal fan 3 is conveyed to the shell 5 of the pre-drying mechanism 4 through the pipeline, and enters the inside of each circular pipe 7 through the small holes on the hole plate 12, and finally flows out from the end of the circular pipe 7 away from the hole plate 12, and is discharged from the exhaust pipe through the reducing head 16;

[0042] At the same time, the exhaust fan 13 works, so that the external air enters the shell 5 from the bottom hole at the bottom of the shell 5, flows through the outside of the circular pipe 7, and finally enters the air guide cover 14 from the top hole at the top of the shell 5, and is conveyed to the preheating cover 15 through the air guide cover 14, and finally blows to the cloth on the conveyor 1, realizing the pre-drying of the cloth;

[0043] In the process of the hot steam flowing through the inside of the circular pipe 7 and the external air flowing through the outside of the circular pipe 7, the two heat exchanges through the pipe wall of the circular pipe 7, the annular fin 11 on the outer wall of the circular pipe 7 can increase the heat exchange area and improve the heat exchange efficiency, and at the same time, since the circular pipe 7 is inclined, the condensed water generated when the hot steam flows in the circular pipe 7 will flow along the inner wall of the circular pipe 7 to the lower part under the action of gravity, and finally collects to the reducing head 16, and when collected to a certain extent, the water in the reducing head 16 can be discharged by opening the drain valve, so that the condensate water is prevented from accumulating in the circular pipe 7 and affecting the heat exchange;

[0044] When the external air flows outside the circular pipe 7, it will be guided by the guide plate 8; the air flows from bottom to top, first contacts and exchanges heat with the bottom of the circular pipe 7, and then flows upwards along the outer wall of the circular pipe 7, when flowing through the arc-shaped part 9 of the guide plate 8, it is guided to the upper part of the circular pipe 7 by the arc-shaped part 9, and since the air flow passage formed between the inclined parts 10 of the two symmetrical guide plates 8 gradually narrows from bottom to top, the flow speed of the external air is limited when flowing through the air flow passage, and the contact time of the external air with the outer wall of the circular pipe 7 located above gradually increases during the flow from bottom to top, thereby further improving the heat exchange effect between the hot steam and the external air;

[0045] In addition, the guide strip 17 in the inner wall of the arc-shaped part 9 will guide the air flowing through it, so that a small part of the airflow flows to the position of the circular pipe 7, and most of the airflow still flows upwards between the arc-shaped part 9 and the outer wall of the circular pipe 7, the small part of the airflow is intercepted by the large airflow, the flow speed of the large airflow is delayed, the contact time of the external air with the outer wall of the circular pipe 7 is increased again, thereby further improving the heat exchange efficiency between the hot steam and the external air, so that the external air can absorb more heat from the hot steam, and when the heated air blows to the cloth, the pre-drying effect on the cloth can be further improved.

[0046] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

1. A cloth drying machine comprising a drying machine body, the drying machine body comprising a conveyor (1), a microwave drying mechanism (2) being mounted on top of the conveyor (1), the cloth being dried by the microwave drying mechanism (2) after being conveyed by the conveyor (1), a centrifugal fan (3) being connected by a pipeline at an exhaust port on top of the microwave drying mechanism (2), characterized in that, Also include: Pre-baking mechanism (4), the pre-baking mechanism (4) includes the shell (5) installed on the side support of conveyor (1), the centrifugal fan (3) air outlet communicates with the shell (5) air inlet, heating assembly (6) is installed in the shell (5), the shell (5) top is installed with exhaust fan (13) and air scoop (14), exhaust fan (13) is located in air scoop (14), the shell (5) top and bottom are provided with bottom hole and top hole for outside air flow, the conveyor (1) top is installed with preheating cover (15), preheating cover (15) is fixed in the side of microwave drying mechanism (2), air scoop (14) communicates with preheating cover (15); When working, the hot steam generated by heating the cloth passes through the heating assembly (6) under the action of the centrifugal fan (3), the outside air passes through the heating assembly (6) under the action of the exhaust fan (13), the outside air and the hot steam exchange heat at the heating assembly (6), and the heated air flows to the cloth on the conveyor (1) from the preheating cover (15), and the heat-exchanged hot steam is discharged from the side hole of the shell (5).

2. The fabric dryer according to claim 1, characterized in that, The heating assembly (6) includes a hole plate (12) fixed in the shell (5), a plurality of circular tubes (7) fixed to one side of the hole plate (12) away from the centrifugal fan (3), one end of the circular tube (7) away from the hole plate (12) is fixedly connected to the inner wall of the shell (5) away from the centrifugal fan (3), the circular tube (7) communicates with the small holes on the hole plate (12) and the side hole on the side of the shell (5), and a variable diameter head (16) is fixed to the side of the shell (5) away from the centrifugal fan (3). The side of the variable diameter head (16) is provided with an exhaust pipe. The hot steam exchanges heat with the outside air when flowing through the circular tube (7), and the heat-exchanged hot steam is discharged from the exhaust pipe after passing through the variable diameter head (16).

3. The fabric dryer according to claim 2, characterized in that, The variable diameter head (16) is provided with a drain at the bottom, and a drain valve is installed at the bottom of the variable diameter head (16) corresponding to the drain.

4. The fabric dryer according to claim 2, wherein The circular tube (7) is inclined, and the height of the end of the circular tube (7) close to the centrifugal fan (3) is higher than the height of the end of the circular tube (7) away from the centrifugal fan (3).

5. The fabric dryer of claim 4, wherein, The outer wall of the circular tube (7) is provided with a plurality of annular fins (11) uniformly arranged along the axis thereof.

6. The fabric dryer of claim 5, wherein, The outer wall of the circular tube (7) is provided with a group of guide plates (8), and the number of each group of guide plates (8) is two. The two guide plates (8) are symmetrically distributed, and the two guide plates (8) are fixed to the upper half of the annular fin (11). The gap between the top of the two guide plates (8) forms an air flow channel.

7. The fabric dryer of claim 6, wherein, The guide plate (8) includes an arc portion (9) and an inclined portion (10) connected in sequence, the arc portion (9) is fixed to the upper half of the annular fin (11), and the center of the arc portion (9) is located on the central axis of the circular tube (7), the air flow channel is located between the adjacent two inclined portions (10), and the width of the air flow channel gradually decreases from bottom to top.

8. The fabric dryer of claim 7, wherein, The inner wall of the arc portion (9) is fixed with a guide strip (17), and the end of the guide strip (17) is fixedly connected with the side of the annular fin (11), and the guide strip (17) is used for guiding the air flow.

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