Drying and tail gas waste heat recovery device for industrial salt production

Abstract

The invention discloses a drying and tail gas waste heat recovery device for industrial salt production, and relates to the technical field of industrial salt production, the drying and tail gas waste heat recovery device comprises a crushing device, a feeding port, a first motor, a first gear, a second gear, a third gear, a transmission belt, a drying device and a waste heat recovery device; the first motor drives the third gear to rotate, the third gear drives the transmission belt to rotate, the transmission belt drives the first gear and the second gear to rotate, the crushing device is driven to scatter caked industrial salt, and the drying device is used for drying the industrial salt. The waste heat recovery device filters irritant gas and moisture in the dried tail gas and then transports the tail gas into the drying device, industrial salt in the drying device is preheated, subsequent drying treatment is facilitated, the drying efficiency is improved, finally, the tail gas is transported back into the drying device, and waste of resources is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of industrial salt production, in particular to a drying and tail gas waste heat recovery device for industrial salt production. Background Art

[0002] The main component of industrial salt is sodium chloride, which is one of the basic chemical raw materials widely used in industrial production. Its application field is very wide, covering many industries such as chemical industry, metallurgy, light industry, etc. Compared with edible salt, industrial salt has lower purification requirements and usually contains more impurities, but its production scale is larger and its application range is wider. The main sources of industrial salt include sea salt, well salt and lake salt. Salt from different sources has different production processes due to different mining and extraction methods. Industrial salt is used in the chemical industry to produce basic chemicals such as caustic soda, chlorine, and soda ash. As an important raw material in chemical production, industrial salt has a wide demand.

[0003] The existing technology has defects: when industrial salt enters the drying device, since the industrial salt contains moisture, it will clump when piled together. If the industrial salt is directly introduced into the drying device, it will lead to low drying efficiency and poor drying effect; industrial salt will produce tail gas during the drying process, and the tail gas contains heat and irritating gases. If the tail gas is discharged directly, it will cause environmental pollution and waste of resources. Summary of the invention

[0004] The object of the present invention is to provide a drying and tail gas waste heat recovery device for industrial salt production to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the drying and exhaust gas waste heat recovery device includes a crushing device and a first motor. A loading port is connected to the top of the crushing device. A first gear, a second gear and a third gear are installed on one side of the crushing device from top to bottom in sequence. A transmission belt is installed on the outer sides of the first gear, the second gear and the third gear. The first gear, the second gear and the third gear are meshed with the transmission belt. The first motor is installed on one side of the crushing device, and the third gear is installed on the output end of the first motor. A drying device is installed on one side of the crushing device, and a waste heat recovery device is installed on one side of the drying device. The first motor is connected to a control system. During operation, industrial salt is manually poured into the crushing device from the feeding port, the control system controls the first motor to start, the first motor drives the third gear to rotate, the third gear drives the transmission belt to rotate, the transmission belt drives the first gear and the second gear to rotate, and the crushed industrial salt enters the drying device. When all the industrial salt enters the drying device, the industrial salt is manually poured into the crushing device from the feeding port again, and the drying device dries the industrial salt at the same time. The exhaust gas generated during the drying enters the waste heat recovery device, the waste heat recovery device filters the irritating gas and moisture in the exhaust gas, and then transports the exhaust gas to the drying device, preheats the industrial salt in the drying device, and finally transports it back to the drying device.

[0006] The crushing device includes a shell, the first gear, the second gear, the third gear and the first motor are installed on one side of the shell, the feeding port is installed above the shell, a crushing chamber and a transport chamber are opened inside the shell, the crushing chamber is arranged above the transport chamber, a rotating shaft 1 is rotatably connected inside the crushing chamber, the rotating shaft 1 is installed in the first gear, a crushing rake is installed on the rotating shaft 1, a vibration device is installed below the crushing rake, a linear guide is connected to one side of the crushing chamber, the vibration device slides in the linear guide, one end of the vibration device is rotatably connected to the rotating shaft 2, the rotating shaft 2 is installed in the second gear, a spiral rod is rotatably connected in the transport chamber, one end of the spiral rod is installed on the output end of the first motor, a transport pipeline is installed on one side of the transport chamber, and a drying device is installed on one side of the transport pipeline. When the industrial salt enters the crushing chamber, the first gear drives the rotating shaft 1 to rotate, and the rotating shaft 1 drives the crushing rake to rotate. The crushing rake rotates to break the large pieces of industrial salt into small pieces. The second gear drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the vibration device to move. The vibration device crushes the small pieces of industrial salt and enters the transportation chamber. The first motor drives the screw pump to rotate to transport the crushed industrial salt to the transportation pipeline.

[0007] The vibration device includes a first screen, one side of the first screen is connected to a first guide rod and a first column, the first guide rod slides in a linear guide rail, one side of the first column is rotatably connected to a first connecting rod, one side of the first connecting rod is rotatably connected to a first rotating rod, a second screen is installed below the first screen, one side of the second screen is connected to a second guide rod and a second column, the second guide rod slides in the linear guide rail, one side of the second column is rotatably connected to a second connecting rod, one side of the second connecting rod is rotatably connected to a second rotating rod, the first rotating rod and the second rotating rod are installed on a second rotating shaft, the first guide rod and the first column slide in the through groove of the second screen, and the length of the first rotating rod is greater than the length of the second rotating rod. When the industrial salt enters the crushing chamber, the second gear drives the second rotating shaft to rotate, the second rotating shaft drives the first rotating rod and the second rotating rod to rotate, the first rotating rod drives the first connecting rod to rotate, the first connecting rod drives the first column to move up and down, the first column drives the first screen to move up and down, the first screen drives the first guide rod to slide up and down in the linear guide rail, the second rotating rod drives the second connecting rod to rotate, the second connecting rod drives the second column to move up and down, the second column drives the second screen to move up and down, the second screen drives the second guide rod to slide up and down in the linear guide rail, because the length of the first rotating rod is greater than the length of the second rotating rod, the stroke of the first screen is longer than the stroke of the second screen, the first screen can be pressed on the second screen, crushing small pieces of industrial salt and falling into the transport chamber through the second screen.

[0008] The drying device includes an insulation shell, which is installed on one side of the transport pipeline, an electric heating tube is installed on the inner wall of the insulation shell, a material taking door is installed on one side of the insulation shell, a second motor is installed on the top of the insulation shell, a rotating shaft 3 is installed on the output end of the second motor, an agitator is installed on one end of the rotating shaft 3, and slide rails are connected on both sides of the inlet of the insulation shell. A third motor is installed on the top of the insulation shell, a screw rod is installed on the output end of the third motor, a sealing plate is slidably connected to the screw rod, and the sealing plate slides on the slide rail. The second motor, the electric heating tube and the third motor are connected to the control system. When all the industrial salt enters the insulation shell, the manual control system controls the third motor to start, the third motor drives the screw rod to rotate, the screw rod drives the sealing plate to slide in the slide rail, and the sealing plate slides in the direction away from the third motor, sealing the insulation shell, controlling the heating of the electric heating tube, and controlling the second motor to start at the same time, the second motor drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the agitator to rotate, so that the industrial salt is evenly heated.

[0009] The waste heat recovery device includes an air supply duct and an air outlet duct, the air outlet duct is installed on one side of the heat insulation shell, a filter box is installed at one end of the air outlet duct, a connecting pipe is installed at one side of the filter box, a blowing pipe is installed at one end of the connecting pipe, the air supply duct is installed above the heat insulation shell, a centrifugal fan is installed at one end of the air supply duct, a heat return pipe is installed below the centrifugal fan, a heat pump is installed below the heat return pipe, a return air duct is installed at one end of the heat pump, the other end of the return air duct is installed on one side of the shell, and the centrifugal fan is connected to the control system. When the industrial salt drying process begins, the manual control system controls the rotation of the centrifugal fan, which transports the airflow through the air supply pipe to the insulation shell. The airflow contacts the heat generated by the electric heating tube to generate hot air, which contacts the industrial salt to evaporate the moisture in the industrial salt. The exhaust gas generated during drying enters the filter box through the air outlet pipe. The filter box filters the irritating gas and moisture in the exhaust gas and transports it to the blowing pipe through the connecting pipe. The blowing pipe transports the exhaust gas to the crushing device. The exhaust gas can blow the industrial salt remaining around the crushing cavity into the vibration device and preheat the industrial salt at the same time. The exhaust gas enters the heat pump through the return air pipe. The heat pump raises the low-temperature exhaust gas to a higher temperature, enters the heat return pipe, and transports the high-temperature exhaust gas to the insulation shell through the centrifugal fan to form a cycle.

[0010] The filter box includes a box body, one end of the air outlet pipe is mounted on the box body, one end of the connecting pipe is mounted on the box body, a first filter plate and a second filter plate are mounted inside the box body, the first filter plate is provided with activated carbon, and the second filter plate is provided with a desiccant. When the exhaust gas enters the box body, the first filter plate absorbs the irritating gas, and the second filter plate absorbs the water vapor, and then discharges it into the connecting pipe.

[0011] The diameter of the holes on the first screen is greater than the diameter of the holes on the second screen.

[0012] The blades of the stirrer are provided with small holes, which can reduce the resistance of stirring, increase the contact area between hot air and industrial salt, and improve the drying efficiency.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The crushing device of the present invention can break large pieces of industrial salt into small pieces, and then vibrate and break up the small pieces of industrial salt to disperse the industrial salt, which is convenient for subsequent drying treatment, ensures the drying effect, and improves the drying efficiency;

[0015] 2. The drying device of the present invention can stir the industrial salt during the drying process to ensure that the industrial salt is fully in contact with the hot air, thereby preventing the industrial salt buried below from being effectively dried, thereby improving the drying efficiency;

[0016] 3. The waste heat recovery device of the present invention can filter the dried hot air and transport it to the crushing device, preheat the industrial salt when crushing it, improve the efficiency of subsequent drying treatment, and then heat the hot air through a heat pump and transport it back to the drying device, reducing waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the drying and tail gas waste heat recovery device of the present invention;

[0018] Figure 2 A three-dimensional diagram of the drying and tail gas waste heat recovery device of the present invention from another angle;

[0019] Figure 3 is a cross-sectional view of a crushing device of the present invention;

[0020] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0021] Figure 5 It is a schematic diagram of the interior of the crushing device of the present invention;

[0022] Figure 6 is a three-dimensional diagram of the vibration device of the present invention;

[0023] Figure 7 is a cross-sectional view of a drying device of the present invention;

[0024] Figure 8 is an internal schematic diagram of a drying device of the present invention;

[0025] Fig. 9 is a three-dimensional diagram of the waste heat recovery device of the present invention;

[0026] Fig.10 It is a cross-sectional view of the filter box of the present invention.

[0027] In the figure: 1. crushing device; 101. housing; 102. rotating shaft 1; 103. crushing rake; 104. rotating shaft 2; 105. vibrating device; 1051. first screen; 1052. first guide rod; 1053. first column; 1054. first rotating rod; 1055. second screen; 1056. second guide rod; 1057. second column; 1058. second rotating rod; 106. screw rod; 107. transport pipe; 108. crushing chamber; 109. transport chamber; 110. linear guide rail; 2. feeding port; 3. first motor; 4. second gear; 5. first gear; 6. transmission Belt; 7. Third gear; 8. Drying device; 801. Insulating shell; 802. Second motor; 803. Rotating shaft three; 804. Agitator; 805. Removing door; 806. Electric heating pipe; 807. Slide rail; 808. Sealing plate; 809. Third motor; 810. Screw; 9. Waste heat recovery device; 901. Air supply pipe; 902. Air outlet pipe; 903. Filter box; 9031. Box body; 9032. First filter plate; 9033. Second filter plate; 904. Connecting pipe; 905. Heat pump; 906. Heat return pipe; 907. Return air pipe; 908. Blowing pipe; 909. Centrifugal fan. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example: Figure 1-Figure 10 As shown, the present invention provides a technical solution, a drying and exhaust waste heat recovery device comprises a crushing device 1 and a first motor 3, a feeding port 2 is connected to the top of the crushing device 1, a first gear 5, a second gear 4 and a third gear 7 are sequentially installed on one side of the crushing device 1 from top to bottom, a transmission belt 6 is installed on the outer sides of the first gear 5, the second gear 4 and the third gear 7, the first gear 5, the second gear 4 and the third gear 7 are meshed with the transmission belt 6, the first motor 3 is installed on one side of the crushing device 1, the third gear 7 is installed on the output end of the first motor 3, a drying device 8 is installed on one side of the crushing device 1, a waste heat recovery device 9 is installed on one side of the drying device 8, and the first motor 3 is connected to the control system.

[0030] During operation, industrial salt is manually poured from the feed port 2 into the crushing device 1, the control system controls the first motor 3 to start, the first motor 3 drives the third gear 7 to rotate, the third gear 7 drives the transmission belt 6 to rotate, the transmission belt 6 drives the first gear 5 and the second gear 4 to rotate, and the crushed industrial salt enters the drying device 8. When all the industrial salt enters the drying device 8, the industrial salt is manually poured from the feed port 2 into the crushing device 1 again, and the drying device 8 dries the industrial salt at the same time. The exhaust gas generated during the drying enters the waste heat recovery device 9, the waste heat recovery device 9 filters the irritating gas and moisture in the exhaust gas, and then transports the exhaust gas to the drying device 8, preheats the industrial salt in the drying device 8, and finally transports it back to the drying device 8.

[0031] The crushing device 1 includes a housing 101, a first gear 5, a second gear 4, a third gear 7 and a first motor 3 are installed on one side of the housing 101, a loading port 2 is installed above the housing 101, a crushing chamber 108 and a transport chamber 109 are provided inside the housing 101, the crushing chamber 108 is arranged above the transport chamber 109, a rotating shaft 102 is rotatably connected inside the crushing chamber 108, the rotating shaft 102 is installed in the first gear 5, a crushing rake 103 is installed on the rotating shaft 102, and the lower end of the crushing rake 103 is provided with a crushing chamber 108. A vibration device 105 is installed on the side, a linear guide rail 110 is connected to one side of the crushing chamber 108, the vibration device 105 slides in the linear guide rail 110, one end of the vibration device 105 is rotatably connected to the second rotating shaft 104, the second rotating shaft 104 is installed in the second gear 4, a screw rod 106 is rotatably connected in the transport chamber 109, one end of the screw rod 106 is installed on the output end of the first motor 3, a transport pipe 107 is installed on one side of the transport chamber 109, and a drying device 8 is installed on one side of the transport pipe 107.

[0032] When the industrial salt enters the crushing chamber 108, the first gear 5 drives the rotating shaft 102 to rotate, the rotating shaft 102 drives the crushing rake 103 to rotate, the crushing rake 103 rotates to break the large pieces of industrial salt into small pieces, the second gear 4 drives the rotating shaft 104 to rotate, the rotating shaft 104 drives the vibration device 105 to move, the vibration device 105 crushes the small pieces of industrial salt and enters the transportation chamber 109, the first motor 3 drives the screw pump to rotate, and the crushed industrial salt is transported to the transportation pipeline 107.

[0033] The vibration device 105 includes a first screen 1051, a first guide rod 1052 and a first column 1053 are connected to one side of the first screen 1051, the first guide rod 1052 slides in the linear guide rail 110, a first connecting rod is rotatably connected to one side of the first column 1053, a first rotating rod 1054 is rotatably connected to one side of the first connecting rod, a second screen 1055 is installed below the first screen 1051, a second guide rod 1056 and a second column 1057 are connected to one side of the second screen 1055, and the second guide rod 1052 slides in the linear guide rail 110, a first connecting rod is rotatably connected to one side of the first connecting rod, and a first rotating rod 1054 is rotatably connected to one side of the first connecting rod. 6 slides in the linear guide rail 110, one side of the second column 1057 is rotatably connected to the second connecting rod, one side of the second connecting rod is rotatably connected to the second rotating rod 1058, the first rotating rod 1054 and the second rotating rod 1058 are installed on the second rotating shaft 104, the first guide rod 1052 and the first column 1053 slide in the through groove of the second screen 1055, the length of the first rotating rod 1054 is greater than the length of the second rotating rod 1058, and the diameter of the hole on the first screen 1051 is greater than the diameter of the hole on the second screen 1055.

[0034] When the industrial salt enters the crushing chamber 108, the second gear 4 drives the second shaft 104 to rotate, the second shaft 104 drives the first rotating rod 1054 and the second rotating rod 1058 to rotate, the first rotating rod 1054 drives the first connecting rod to rotate, the first connecting rod drives the first column 1053 to move up and down, the first column 1053 drives the first screen 1051 to move up and down, the first screen 1051 drives the first guide rod 1052 to slide up and down in the linear guide rail 110, the second rotating rod 1058 drives the second connecting rod to rotate, and the second connecting rod drives the first column 1053 to move up and down. The second column 1057 moves up and down, and the second column 1057 drives the second screen 1055 to move up and down. The second screen 1055 drives the second guide rod 1056 to slide up and down in the linear guide rail 110. Since the length of the first rotating rod 1054 is greater than the length of the second rotating rod 1058, the stroke of the first screen 1051 is longer than the stroke of the second screen 1055. The first screen 1051 can be pressed on the second screen 1055 to crush small pieces of industrial salt, which fall into the transport chamber 109 through the second screen 1055.

[0035] The drying device 8 includes an insulating shell 801, which is installed on one side of the transport pipeline 107. An electric heating pipe 806 is installed on the inner wall of the insulating shell 801, a material taking door 805 is installed on one side of the insulating shell 801, a second motor 802 is installed above the insulating shell 801, a rotating shaft 3 803 is installed at the output end of the second motor 802, an agitator 804 is installed at one end of the rotating shaft 3 803, and small holes are opened on the blades of the agitator 804, which can reduce the resistance of stirring, increase the contact area between hot air and industrial salt, and improve the drying efficiency. Slide rails 807 are connected to both sides of the feeding port of the insulating shell 801, a third motor 809 is installed above the insulating shell 801, a screw rod 810 is installed at the output end of the third motor 809, a sealing plate 808 is slidably connected to the screw rod 810, and the sealing plate 808 slides on the slide rail 807. The second motor 802, the electric heating pipe 806 and the third motor 809 are connected to the control system.

[0036] When all the industrial salt enters the insulation shell 801, the manual control system controls the third motor 809 to start, the third motor 809 drives the screw 810 to rotate, the screw 810 drives the sealing plate 808 to slide in the slide rail 807, the sealing plate 808 slides away from the third motor 809, seals the insulation shell 801, controls the electric heating tube 806 to generate heat, and at the same time controls the second motor 802 to start, the second motor 802 drives the rotating shaft 803 to rotate, the rotating shaft 803 drives the agitator 804 to rotate, so that the industrial salt is evenly heated.

[0037] The waste heat recovery device 9 includes an air supply pipe 901 and an air outlet pipe 902. The air outlet pipe 902 is installed on one side of the insulation shell 801. A filter box 903 is installed at one end of the air outlet pipe 902. A connecting pipe 904 is installed on one side of the filter box 903. A blowing pipe 908 is installed at one end of the connecting pipe 904. The air supply pipe 901 is installed above the insulation shell 801. A centrifugal fan 909 is installed at one end of the air supply pipe 901. A heat return pipe 906 is installed below the centrifugal fan 909. A heat pump 905 is installed below the heat return pipe 906. A return air pipe 907 is installed at one end of the heat pump 905. The other end of the return air pipe 907 is installed on one side of the outer shell 101. The centrifugal fan 909 is connected to the control system.

[0038] When the industrial salt drying process begins, the manual control system controls the centrifugal fan 909 to rotate, and the centrifugal fan 909 transports the airflow through the air supply pipe 901 to the insulation shell 801. The airflow contacts the heat generated by the electric heating tube 806 to generate hot air, and the hot air contacts the industrial salt to evaporate the moisture in the industrial salt. The exhaust gas generated during drying enters the filter box 903 through the air outlet pipe 902. The filter box 903 filters the irritating gas and moisture in the exhaust gas and transports it to the blowing pipe 908 through the connecting pipe 904. The blowing pipe 908 transports the exhaust gas to the crushing device 1. The exhaust gas can blow the industrial salt remaining around the crushing chamber 108 into the vibration device 105, and preheat the industrial salt at the same time. The exhaust gas enters the heat pump 905 through the return air pipe 907. The heat pump 905 raises the low-temperature exhaust gas to a higher temperature, enters the heat return pipe 906, and transports the high-temperature exhaust gas to the insulation shell 801 through the centrifugal fan 909 to form a cycle.

[0039] The filter box 903 includes a box body 9031, one end of the air outlet pipe 902 is mounted on the box body 9031, one end of the connecting pipe 904 is mounted on the box body 9031, and a first filter plate 9032 and a second filter plate 9033 are mounted inside the box body 9031. Activated carbon is arranged on the first filter plate 9032, and a desiccant is arranged on the second filter plate 9033. When the exhaust gas enters the box body 9031, the first filter plate 9032 absorbs the irritating gas, and the second filter plate 9033 absorbs the water vapor, and then discharges it into the connecting pipe 904.

[0040] Working principle of the present invention:

[0041] During operation, industrial salt is manually poured into the crushing chamber 108 from the feeding port 2, and the first motor 3 is started by the manual control system. The first motor 3 drives the third gear 7 to rotate, and the third gear 7 drives the transmission belt 6 to rotate. The transmission belt 6 drives the first gear 5 and the second gear 4 to rotate, and the first gear 5 drives the rotating shaft 102 to rotate, and the rotating shaft 102 drives the crushing rake 103 to rotate. The crushing rake 103 rotates to break large pieces of industrial salt into small pieces, which fall on the first screen 1051.

[0042] When the industrial salt falls on the first screen 1051, the second gear 4 drives the second shaft 104 to rotate, the second shaft 104 drives the first rotating rod 1054 and the second rotating rod 1058 to rotate, the first rotating rod 1054 drives the first connecting rod to rotate, the first connecting rod drives the first column 1053 to move up and down, the first column 1053 drives the first screen 1051 to move up and down, the first screen 1051 drives the first guide rod 1052 to slide up and down in the linear guide rail 110, the second rotating rod 1058 drives the second connecting rod to rotate, the second connecting rod drives the second column 1057 to move up and down, the second column 1057 drives the second screen 1055 to move up and down The second screen 1055 drives the second guide rod 1056 to slide up and down in the linear guide rail 110. Since the length of the first rotating rod 1054 is greater than the length of the second rotating rod 1058, the stroke of the first screen 1051 is longer than the stroke of the second screen 1055. The first screen 1051 can be pressed on the second screen 1055 to crush small pieces of industrial salt larger than the diameter of the holes on the second screen 1055, and the small pieces of industrial salt fall into the transport chamber 109 through the second screen 1055. The first motor 3 drives the screw pump to rotate, and the crushed industrial salt is transported to the transport pipeline 107, and enters the heat insulation shell 801 through the transport pipeline 107.

[0043] When all the industrial salt enters the insulation shell 801, the manual control system controls the third motor 809 to start, the third motor 809 drives the screw 810 to rotate, the screw 810 drives the sealing plate 808 to slide in the slide rail 807, the sealing plate 808 slides in the direction away from the third motor 809, and seals the insulation shell 801, and then the industrial salt is manually poured into the crushing cavity 108 from the feeding port 2, and then the feeding port 2 is sealed, the manual control system controls the electric heating tube 806 to generate heat, controls the centrifugal fan 909 to rotate, and the centrifugal fan 909 transports the airflow to the insulation shell 801 through the air supply pipe 901, the airflow contacts the heat generated by the electric heating tube 806 to generate hot air, the hot air contacts the industrial salt, and the water in the industrial salt is evaporated, and at the same time the second motor 802 is controlled to start, the second motor 802 drives the rotating shaft 3 803 to rotate, and the rotating shaft 3 803 drives the agitator 804 to rotate, so that the industrial salt is evenly heated.

[0044] The exhaust gas generated during drying enters the filter box 903 through the air outlet pipe 902, the first filter plate 9032 in the box body 9031 absorbs the irritating gas, and the second filter plate 9033 absorbs the water vapor. After the filter box 903 filters the irritating gas and moisture in the exhaust gas, the exhaust gas is transported to the blowing pipe 908 through the connecting pipe 904, and the blowing pipe 908 transports the exhaust gas to the crushing device 1. The exhaust gas can blow the industrial salt remaining around the crushing chamber 108 into the vibration device 105, and preheat the industrial salt at the same time. The exhaust gas enters the heat pump 905 through the return air pipe 907, and the heat pump 905 raises the low-temperature exhaust gas to a higher temperature, enters the heat return pipe 906, and transports the high-temperature exhaust gas to the insulation shell 801 through the centrifugal fan 909 to form a cycle.

[0045] When the industrial salt is dried, the manual control system controls the centrifugal fan 909, the electric heating tube 806 and the second motor 802 to stop working, opens the material taking door 805, takes out the dried industrial salt, and then closes the material taking door 805. The control system controls the third motor 809 to start, and the third motor 809 drives the screw rod 810 to rotate, and the screw rod 810 drives the sealing plate 808 to slide in the slide rail 807. The sealing plate 808 slides in the direction close to the third motor 809, and the industrial salt in the transport pipeline 107 is transported to the insulation shell 801 for drying.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A drying and tail gas waste heat recovery device for industrial salt production, characterized in that: The drying and exhaust gas waste heat recovery device comprises a crushing device (1) and a first motor (3). A feeding port (2) is connected to the top of the crushing device (1). A first gear (5), a second gear (4) and a third gear (7) are sequentially installed on one side of the crushing device (1) from top to bottom. A transmission belt (6) is installed on the outer sides of the first gear (5), the second gear (4) and the third gear (7). The first gear (5), the second gear (4) and the third gear (7) are meshed with the transmission belt (6). The first motor (3) is installed on one side of the crushing device (1). The third gear (7) is installed on the output end of the first motor (3). A drying device (8) is installed on one side of the crushing device (1). A waste heat recovery device (9) is installed on one side of the drying device (8). The first motor (3) is connected to a control system.

2. The drying and tail gas waste heat recovery device for industrial salt production according to claim 1, characterized in that: The crushing device (1) comprises a housing (101), the first gear (5), the second gear (4), the third gear (7) and the first motor (3) are mounted on one side of the housing (101), the loading port (2) is mounted above the housing (101), a crushing chamber (108) and a transport chamber (109) are provided inside the housing (101), the crushing chamber (108) is arranged above the transport chamber (109), a rotating shaft (102) is rotatably connected inside the crushing chamber (108), the rotating shaft (102) is mounted in the first gear (5), a crushing rake (103) is mounted on the rotating shaft (102), and the crushing rake (103) is 03), a vibration device (105) is installed below the crushing chamber (108), a linear guide rail (110) is connected to one side of the crushing chamber (108), the vibration device (105) slides in the linear guide rail (110), one end of the vibration device (105) is rotatably connected to a second rotating shaft (104), the second rotating shaft (104) is installed in the second gear (4), a screw rod (106) is rotatably connected in the transport chamber (109), one end of the screw rod (106) is installed on the output end of the first motor (3), a transport pipe (107) is installed on one side of the transport chamber (109), and a drying device (8) is installed on one side of the transport pipe (107).

3. The drying and tail gas waste heat recovery device for industrial salt production according to claim 2, characterized in that: The vibration device (105) comprises a first screen (1051), one side of the first screen (1051) is connected to a first guide rod (1052) and a first column (1053), the first guide rod (1052) slides in a linear guide rail (110), one side of the first column (1053) is rotatably connected to a first connecting rod, one side of the first connecting rod is rotatably connected to a first rotating rod (1054), a second screen (1055) is installed below the first screen (1051), one side of the second screen (1055) is connected to a second guide rod (1056) and A second column (1057), the second guide rod (1056) slides in the linear guide rail (110), one side of the second column (1057) is rotatably connected to a second connecting rod, one side of the second connecting rod is rotatably connected to a second rotating rod (1058), the first rotating rod (1054) and the second rotating rod (1058) are installed on the second rotating shaft (104), the first guide rod (1052) and the first column (1053) slide in the through groove of the second screen (1055), and the length of the first rotating rod (1054) is greater than the length of the second rotating rod (1058).

4. The drying and tail gas waste heat recovery device for industrial salt production according to claim 3, characterized in that: The drying device (8) comprises a heat-insulating shell (801), the heat-insulating shell (801) being installed on one side of the transport pipeline (107), an electric heating tube (806) being installed on the inner wall of the heat-insulating shell (801), a material taking door (805) being installed on one side of the heat-insulating shell (801), a second motor (802) being installed above the heat-insulating shell (801), a rotating shaft (803) being installed on the output end of the second motor (802), and a stirrer being installed at one end of the rotating shaft (803). (804), slide rails (807) are connected to both sides of the feed port of the insulation shell (801), a third motor (809) is installed above the insulation shell (801), a screw rod (810) is installed at the output end of the third motor (809), a sealing plate (808) is slidably connected to the screw rod (810), and the sealing plate (808) slides on the slide rails (807), and the second motor (802), the electric heating tube (806) and the third motor (809) are connected to the control system.

5. The drying and tail gas waste heat recovery device for industrial salt production according to claim 4, characterized in that: The waste heat recovery device (9) comprises an air supply pipe (901) and an air outlet pipe (902), wherein the air outlet pipe (902) is installed on one side of the heat insulation shell (801), a filter box (903) is installed on one end of the air outlet pipe (902), a connecting pipe (904) is installed on one side of the filter box (903), a blowing pipe (908) is installed on one end of the connecting pipe (904), the air supply pipe (901) is installed above the heat insulation shell (801), a centrifugal fan (909) is installed on one end of the air supply pipe (901), a heat return pipe (906) is installed below the centrifugal fan (909), a heat pump (905) is installed below the heat return pipe (906), a return air pipe (907) is installed on one end of the heat pump (905), and the other end of the return air pipe (907) is installed on one side of the shell (101), and the centrifugal fan (909) is connected to a control system.

6. The drying and tail gas waste heat recovery device for industrial salt production according to claim 5, characterized in that: The filter box (903) comprises a box body (9031), one end of the air outlet pipe (902) is mounted on the box body (9031), one end of the connecting pipe (904) is mounted on the box body (9031), a first filter plate (9032) and a second filter plate (9033) are mounted inside the box body (9031), activated carbon is arranged on the first filter plate (9032), and a desiccant is arranged on the second filter plate (9033).

7. The drying and tail gas waste heat recovery device for industrial salt production according to claim 6, characterized in that: The diameter of the holes on the first screen (1051) is greater than the diameter of the holes on the second screen (1055).

8. The drying and tail gas waste heat recovery device for industrial salt production according to claim 7, characterized in that: The blades of the stirrer (804) are provided with small holes.

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