Belt dryer convenient for waste heat recovery and Qilong capsule production line

Abstract

The utility model relates to the technical field of belt type drying machines, in particular to a belt type drying machine convenient for waste heat recovery and a Qilong capsule production line, which comprise a machine shell, a conveying line is arranged in the machine shell, the machine shell has a first direction and a second direction which are horizontal and perpendicular to each other, and the conveying line conveys along the first direction. And an S-shaped multi-section bent heat exchange tube assembly is arranged above the shell. The end, in the first direction, of the heat exchange pipe assembly is fixed to the rotating shaft, and the rotating shaft can rotate so that the plane where the heat exchange pipe assembly is located can be horizontal or obliquely downward. The heat exchange pipe assembly is provided with a water inlet and a water outlet. The water inlet is connected with an outlet of a three-way valve. Two inlets of the three-way valve are communicated with the clear water bin and the circulating heat exchange water bin respectively, and a water outlet is communicated with the circulating heat exchange water bin. A plurality of nozzles capable of being opened and closed are installed at the end, away from the rotating shaft, of the heat exchange pipe assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to belt dryer technical field especially a kind of belt dryer and jilong capsule production line convenient to waste heat recovery. BACKGROUND

[0002] In the production process of jilong capsule (Chinese patent drug mainly using radix astragali and earthworm), earthworm concentrated solution and concentrated solution containing radix astragali are respectively sent to vacuum belt continuous dryer for drying.

[0003] In order to realize drying, heating assembly formed by arranging heating resistance wire or steam pipeline in the conveying belt of belt dryer is generally arranged, and the concentrated solution on the conveying belt is heated by using the heating assembly, so as to form plate-shaped solid.

[0004] The inventor attempts to arrange heat exchange pipe above the conveying belt to absorb heat carried by gas generated by evaporation of concentrated solution. However, after heat exchange pipe occupies space above the conveying belt, conveying belt cleaning nozzle and corresponding cleaning water supply pipeline lack arrangement space, and arrangement of the two is easy to interfere with each other. SUMMARY

[0005] The utility model provides a kind of belt dryer and jilong capsule production line convenient to waste heat recovery, can at least solve one of the above technical problems.

[0006] To solve the above technical problems, one or more embodiments of the utility model provide a kind of belt dryer convenient to waste heat recovery, including shell, conveying line is installed in shell, shell has first direction and second direction which are horizontal and perpendicular to each other, conveying line is transported along first direction, S-shaped multi-section bending heat exchange pipe assembly is installed above shell. One end of heat exchange pipe assembly along first direction is fixed with rotating shaft, and rotating shaft can be rotated to make the plane where heat exchange pipe assembly is horizontal or inclined downward.

[0007] Heat exchange pipe assembly has water inlet and water outlet, and the outlet of three-way valve is connected with water inlet. Two inlets of three-way valve are respectively communicated with fresh water bin and circulating heat exchange water bin, and water outlet is communicated with circulating heat exchange water bin. Multiple nozzles that can be opened and closed are installed at the end of heat exchange pipe assembly away from rotating shaft.

[0008] The beneficial effects of the above one or more technical solutions are as follows:

[0009] In the scheme, the heat exchange assembly is arranged in a structure that can rotate around itself at one end in the first direction, and a spray head that can be opened and closed is arranged at the end of the heat exchange assembly away from the first direction. The water inlet of the heat exchange assembly is communicated with the clean water bin and the circulating heat exchange water bin through the three-way valve. This arrangement enables the heat exchange assembly to have two working states. When the belt dryer heats and dries the concentrated liquid, the heat exchange assembly can exchange heat with the rising water vapor to recover waste heat. When the belt dryer is stopped for cleaning, the spray head of the heat exchange assembly can be used to spray cleaning water on the conveying belt.

[0010] That is, the scheme integrates the heat exchange function and the water spraying cleaning function into the heat exchange assembly, which can reduce the space occupation and avoid the interference of the installation positions of the two functions compared with the separated arrangement. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a sectional view of part of the structure in the heat exchange assembly arranged horizontally in the embodiment of the utility model to facilitate the collection of waste heat;

[0012] Fig. 2 is a sectional view of part of the structure in the heat exchange assembly arranged vertically in the embodiment of the utility model to facilitate the spraying of cleaning water;

[0013] Fig. 3 is a top view of the heat exchange assembly in the embodiment of the utility model.

[0014] In the figure, 1, the machine shell; 101, the feed inlet; 2, the first inlet; 3, the second inlet; 4, the three-way valve; 5, the water supply main pipe; 6, the water supply branch pipe; 7, the heat exchange assembly; 8, the support; 9, the rotating shaft; 10, the spray head; 11, the base; 12, the conveying line; 71, the straight pipe; 72, the curved pipe; 73, the water outlet; 74, the rotating hole; 75, the connecting plate; 76, the water inlet. DETAILED DESCRIPTION

[0015] To clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation manners and in combination with the accompanying drawings.

[0016] Referring to Figs. 1-3 The embodiment provides a belt dryer facilitating waste heat recovery, which comprises a machine shell 1, a conveying line 12 is installed in the machine shell 1, the machine shell 1 has a first direction and a second direction which are horizontal and perpendicular to each other, the conveying line 12 is conveyed along the first direction, and a heat exchange pipe assembly in an S-shaped multi-section bending mode is installed above the machine shell 1. One end of the heat exchange pipe assembly along the first direction is fixed with a rotating shaft 9, and the rotating shaft 9 can rotate to make the plane where the heat exchange pipe assembly is located horizontal or inclined downward.

[0017] The heat exchange pipe assembly has a water inlet 76 and a water outlet 73, and the water inlet 76 is connected with the outlet of the three-way valve 4. The two inlets (i.e. the first inlet 2 and the second inlet 3 shown in the figure) of the three-way valve 4 are respectively communicated with the clean water bin and the circulating heat exchange water bin, and the water outlet 73 is communicated with the circulating heat exchange water bin. The end of the heat exchange pipe assembly away from the rotating shaft 9 is provided with a plurality of spray heads 10 which can be opened and closed.

[0018] Specifically, in the embodiment, the conveying line 12 is a belt conveying line 12, and the belt conveying line 12 realizes the conveying of the concentrated liquid material in the horizontal direction. The conveying line 12 includes two driving pulleys and a plurality of driving pulleys, and the two driving pulleys are connected by a belt. The inside of the belt is supported by a supporting pulley. More specifically, the driving pulley is installed by a pulley support, and the pulley support is supported by the base 11.

[0019] In order to realize the feeding of the conveying line 12, a feeding port 101 is arranged on the side of the machine shell 1, and the feeding port 101 is used to pass through the conveying line or the hopper for feeding.

[0020] In the embodiment, the heat exchange pipe assembly includes straight pipes 71 and curved pipes 72. The straight pipes 71 are arranged side by side in the second direction, and the straight pipes 71 are perpendicular to the second direction. The curved pipes 72 are connected to adjacent straight pipes 71.

[0021] Specifically, referring to Fig. 3 , the heat exchange assembly 7 has two straight pipes 71 at the two ends in the second direction. The heat exchange assembly 7 is respectively connected to the connecting plates 75 at the two ends of the pipe. The connecting plates 75 are fixedly connected to the heat exchange pipes at the two ends in the pipe extension direction. The water inlet 76 and the water outlet 73 are respectively arranged at the positions of the two ends of the heat exchange pipes in the pipe extension direction. More specifically, the connecting plate 75 is provided with a rotating hole 74, and the rotating hole 74 is used to pass through the rotating shaft 9, so as to realize the rotating connection between the heat exchange assembly 7 and the machine shell 1.

[0022] In the embodiment, the spray head 10 is arranged on the curved pipe 72 away from the rotating shaft 9 of the heat exchange pipe assembly.

[0023] When the number of heat exchange assemblies 7 is multiple, referring again to Fig. 3 , a water supply main pipe 5 is arranged outside the machine shell 1. The water supply main pipe 5 is communicated with a plurality of water supply branch pipes 6. The water supply branch pipes 6 pass into the machine shell 1 and are respectively communicated with the water inlets 76 of the corresponding heat exchange assemblies 7. Similarly, a backwater main pipe (not shown in the figure) is arranged outside the machine shell 1. The backwater main pipe is communicated with a plurality of backwater branch pipes (not shown in the figure). The backwater branch pipes pass into the machine shell 1 and are respectively communicated with the water outlets 73 of the corresponding heat exchange assemblies 7.

[0024] In the embodiment, the two ends of the rotating shaft 9 are respectively installed on the supports 8 of the inner wall of the machine shell 1, and the rotating shaft 9 is driven by a rotating driving assembly.

[0025] In the embodiment, the rotary driving member is a rotary motor (not shown in the figure). The body of the rotary motor is fixedly connected to the inner wall of the casing 1, and the output shaft of the rotary motor is coaxially fixed to the rotating shaft 9. In the case of using multiple heat exchange assemblies 7, one motor can be arranged at each rotating shaft 9 to independently drive, or the multiple rotating shafts 9 can be connected through a belt assembly or a chain wheel assembly, and a driving motor is used to synchronously drive the multiple rotating shafts 9 to rotate.

[0026] In the embodiment, the three-way valve 4 is communicated with the clean water bin through a first water inlet pipeline, and communicated with the circulating heat exchange water bin through a second water inlet pipeline. A stop valve is arranged on each of the first water inlet pipeline and the second water inlet pipeline.

[0027] In the embodiment, a torsional spring (not shown in the figure) is sleeved on the rotating shaft 9, and the two force receiving ends of the torsional spring are respectively abutted against the inner wall of the casing 1 and the heat exchange pipe assembly. The torsional spring can provide elastic force for the heat exchange pipe assembly to rotate to a horizontal state.

[0028] Working principle: when the belt dryer heats and dries the concentrated liquid, the heat exchange assembly 7 rotates to a horizontal state, the pipeline between the three-way valve 4 and the clean water bin is closed, the pipeline between the three-way valve 4 and the circulating heat exchange bin is opened, and the heat exchange assembly 7 realizes the heat exchange function, which can exchange heat with the rising water vapor to recover waste heat.

[0029] When the belt dryer is stopped for cleaning, the heat exchange assembly 7 rotates to a vertical downward state, the pipeline between the three-way valve 4 and the clean water bin is opened, the pipeline between the three-way valve 4 and the circulating heat exchange bin is closed, and the heat exchange assembly 7 realizes the cleaning water spraying function, so that the nozzle 10 of the heat exchange assembly 7 sprays cleaning water to the conveying belt 12.

[0030] The embodiment also provides a production line of Qilong capsules, which comprises the belt dryer facilitating waste heat recovery.

[0031] The specific embodiments described above cannot be used as a limitation on the protection scope of the present application. Any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0032] The details not described in the present application are known to those skilled in the art.

Claims

1. A belt dryer facilitating waste heat recovery, characterized by, The heat exchange pipe assembly is installed on the top of the casing and is S-shaped and multi-bent, and one end of the heat exchange pipe assembly along the first direction is fixed to a rotating shaft, and the rotating shaft can rotate to make the plane of the heat exchange pipe assembly horizontal or inclined downward. The heat exchange pipe assembly has a water inlet and a water outlet, the water inlet is connected to the outlet of a three-way valve, two inlets of the three-way valve are respectively connected to a clean water bin and a circulating heat exchange water bin, and the water outlet is connected to the circulating heat exchange water bin; and a plurality of spray heads which can be opened and closed are installed on the end of the heat exchange pipe assembly away from the rotating shaft.

2. The belt dryer for facilitating recovery of waste heat according to claim 1, characterized by, The heat exchange pipe assembly comprises straight pipes and bent pipes, the straight pipes are arranged side by side along the second direction, and the straight pipes are perpendicular to the second direction, and the bent pipes are connected to adjacent straight pipes.

3. The belt dryer for facilitating recovery of waste heat according to claim 1, characterized by, The spray heads are arranged on the bent pipes away from the rotating shaft in the heat exchange pipe assembly.

4. The belt dryer for facilitating recovery of waste heat according to claim 1, characterized by, Both ends of the rotating shaft are respectively installed on the supports of the inner wall of the casing, and the rotating shaft is driven by a rotating driving assembly.

5. The belt dryer for facilitating recovery of waste heat according to claim 4, characterized by The rotating driving assembly is a rotating motor.

6. The belt dryer for facilitating recovery of waste heat according to claim 1, characterized by The three-way valve is connected to the clean water bin through a first water inlet pipeline, and is connected to the circulating heat exchange water bin through a second water inlet pipeline, and a stop valve is arranged on each of the first water inlet pipeline and the second water inlet pipeline.

7. The belt dryer for facilitating recovery of waste heat according to claim 1, characterized by A torsional spring is sleeved on the rotating shaft, two force receiving ends of the torsional spring are respectively abutted against the inner wall of the casing and the heat exchange pipe assembly, and the torsional spring can provide elastic force for the heat exchange pipe assembly to rotate to the horizontal state.

8. A ginseng and dragon capsule production line, characterized by, The belt dryer with heat recovery convenience according to any one of claims 1-7.

Images