Low-temperature drying equipment with microwave emitter

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to low-temperature drying equipment with a microwave emitter, which comprises a second support frame and an evaporation mechanism, the evaporation mechanism comprises an evaporation chamber, and a heating jacket is arranged outside the evaporation chamber; the bottom of the evaporation chamber is fixedly connected and communicated with a residual liquid outlet pipe; the residual liquid outlet pipe penetrates through the heating jacket and is not communicated with the heating jacket; the outer wall of the bottom of the evaporation chamber is fixedly connected with a pair of microwave emission boxes, and the microwave emission boxes extend out of the heating jacket; a group of microwave emitters are mounted in the microwave emission box; the bottom of the heating jacket is fixedly connected with a first support frame; the outer wall of the heating jacket is fixedly connected with a saturated steam inlet pipe and a condensed water outlet pipe; the problem that the treatment cost is high due to the fact that the water content of residual liquid obtained after sewage is evaporated by existing evaporation and concentration equipment is high is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to a low-temperature drying device with a microwave emitter. Background Art

[0002] The discharge of industrial wastewater has caused serious environmental pollution. In order to protect the environment, strict control of sewage discharge is required. All large landfill enterprises need to discharge sewage to a special sewage treatment plant for treatment before discharging. The sewage treatment plant generally charges according to the treatment volume. For example, it is several thousand yuan per ton. Therefore, the cost of enterprises in sewage treatment has also increased significantly. Through evaporation and concentration of sewage, distilled water meeting the discharge standard can be extracted, and this distilled water can be directly discharged, and the remaining concentrated residue is then discharged to the sewage treatment plant for treatment. For example, 10 tons of sewage can be decomposed into 8 tons of distilled water and 2 tons of concentrated residue after evaporation and concentration. Then the enterprise only needs to spend the cost of 2 tons of treatment volume, thus greatly reducing the sewage treatment cost of the enterprise.

[0003] In the prior art, saturated steam is used as a heat source outside the evaporation and concentration equipment to heat the sewage, so that the water in the sewage evaporates, so as to achieve the purpose of emission reduction. However, the residual liquid obtained after evaporating the sewage by the existing evaporation and concentration equipment still has a relatively high water content, resulting in a relatively high treatment cost. Therefore, the utility model provides a low-temperature drying device with a microwave emitter. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve the problem that the residual liquid obtained after evaporating sewage by the existing evaporation and concentration equipment still has a relatively high water content, resulting in a relatively high treatment cost.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: A low-temperature drying device with a microwave emitter of the utility model includes a second support frame and an evaporation mechanism; the evaporation mechanism includes an evaporation chamber, and a heating jacket is arranged outside the evaporation chamber; a residual liquid outlet pipe is fixedly connected and communicated at the bottom of the evaporation chamber; the residual liquid outlet pipe penetrates through the heating jacket and is not communicated with the heating jacket; a sewage inlet pipe and a sewage vapor outlet pipe are fixedly connected to the top of the evaporation chamber; a pair of microwave emission boxes are fixedly connected to the outer wall of the bottom of the evaporation chamber, and the microwave emission boxes extend outside the heating jacket; a group of microwave emitters are installed in the microwave emission boxes; a first support frame is fixedly connected to the bottom of the heating jacket; a saturated steam inlet pipe and a condensate outlet pipe are fixedly connected to the outer wall of the heating jacket.

[0006] Preferably, metal waveguide holes are formed in the microwave emitter; a liquid blocking block is fixedly connected to the microwave emitter, and the liquid blocking block corresponds to the position of the metal waveguide holes; the liquid blocking block is fixedly connected inside the side wall of the evaporation chamber, and one end of the liquid blocking block is attached to the inner wall surface of the evaporation chamber; the liquid blocking block is made of a wave-passing material structure.

[0007] Preferably, one end of the sewage vapor outlet pipe is connected to a heat exchanger; the heat exchanger is fixedly connected to the second support frame; a circulation pipe is fixedly connected to the middle position of the evaporation chamber; the circulation pipe is sequentially connected to a circulation pump and the heat exchanger, and the end of the circulation pipe is fixedly connected to the top of the evaporation chamber; the circulation pump is fixedly connected to the second support frame.

[0008] Preferably, a motor box is fixedly connected to the top of the evaporation chamber; the motor box drives a rotating rod, and the rotating rod penetrates through the top of the evaporation chamber; a group of rotating plates are fixedly connected to the rotating rod; one end of the rotating plate is fixedly connected with an arc-shaped scraping plate, and the arc-shaped scraping plate is attached to the inner side wall of the evaporation chamber; a group of scraping plates are fixedly connected to the bottom of the rotating rod, and the scraping plates are located below the rotating plates; the scraping plates are attached to the bottom wall of the evaporation chamber.

[0009] Preferably, a flow blocking plate is fixedly connected to the inner wall of the evaporation chamber; a group of flow dividing openings are formed in the flow blocking plate; an annular flow dividing plate is fixedly connected to the flow blocking plate.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. For the low-temperature drying equipment with a microwave emitter of the present utility model, the residual liquid obtained by evaporating saturated steam through the microwave emitter is subjected to secondary concentration and drying, effectively reducing the amount of residual liquid and lowering the cost required for sewage treatment.

[0012] 2. For the low-temperature drying equipment with a microwave emitter of the present utility model, through the use of the heat exchanger, the secondary heat discharged from the evaporation mechanism is fully utilized, improving the heat utilization rate and reducing the energy consumption required for sewage treatment.

[0013] 3. For the low-temperature drying equipment with a microwave emitter of the present utility model, the sewage is agitated by the rotating plate, accelerating the sewage evaporation speed. At the same time, the settings of the arc-shaped scraping plate and the scraping plate can effectively prevent the residual liquid residues after sewage evaporation and the residual liquid residues after further concentration of the microwave from adhering to the inner wall of the evaporation chamber. At the same time, the rotation of the scraping plate is also beneficial to the discharge of the concentrated residual liquid residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below with reference to the accompanying drawings.

[0015] Figure 1 is a three-dimensional view of the present utility model;

[0016] Figure 2It is a side view cross-sectional view of the evaporation mechanism;

[0017] Figure 3 Partial structural diagram of the microwave emission box;

[0018] In the figure: 1. Evaporation chamber; 11. Residual liquid outlet pipe; 12. Sewage inlet pipe; 13. Sewage vapor outlet pipe; 14. Baffle plate; 141. Annular shunt plate; 142. Shunt port; 2. Heating jacket; 21. Saturated steam inlet pipe; 22. Condensate outlet pipe; 23. First support frame; 24. Circulation pipe; 3. Microwave emission box; 31. Microwave emitter; 311. Metal waveguide hole; 32. Liquid blocking block; 4. Second support frame; 41. Heat exchanger; 42. Circulation pump; 5. Motor box; 51. Rotating rod; 52. Rotating plate; 521. Arc-shaped scraping plate; 53. Scraping plate. Specific implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] Embodiment 1

[0021] As Figures 1 to 3 shown, a low-temperature drying device with a microwave emitter described in an embodiment of the present utility model includes a second support frame 4 and an evaporation mechanism; the evaporation mechanism includes an evaporation chamber 1, and a heating jacket 2 is arranged outside the evaporation chamber 1; a residual liquid outlet pipe 11 is fixedly connected and communicated at the bottom of the evaporation chamber 1; the residual liquid outlet pipe 11 penetrates through the heating jacket 2 and is not communicated with the heating jacket 2;; a sewage inlet pipe 12 and a sewage vapor outlet pipe 13 are fixedly connected to the top of the evaporation chamber 1; a pair of microwave emission boxes 3 are fixedly connected to the outer wall of the bottom of the evaporation chamber 1, and the microwave emission boxes 3 extend outside the heating jacket 2; a group of microwave emitters 31 are installed in the microwave emission boxes 3; a first support frame 23 is fixedly connected to the bottom of the heating jacket 2; a saturated steam inlet pipe 21 and a condensate outlet pipe 22 are fixedly connected to the outer wall of the heating jacket 2; during operation, sewage enters the evaporation chamber 1 through the sewage inlet pipe 12, saturated steam is input through the saturated steam inlet pipe 21, the saturated steam entering the heating jacket 2 heats and evaporates the sewage in the evaporation chamber 1, the condensate obtained by condensing the saturated steam is discharged through the condensate outlet pipe 22, the residual liquid obtained by evaporation is further concentrated by the microwave emitter 31, and the finally obtained residual liquid is discharged through the residual liquid outlet pipe 11 and sent for post-treatment. The residual liquid obtained by evaporating the saturated steam by the microwave emitter 31 is secondarily concentrated and dried, effectively reducing the amount of residual liquid and reducing the cost required for sewage treatment.

[0022] Furthermore, a steam trap is installed on the condensate outlet pipe 22, and a flap valve is installed on the residual liquid outlet pipe 11.

[0023] A metal waveguide hole 311 is formed on the microwave emitter 31; a liquid blocking block 32 is fixedly connected to the microwave emitter 31, and the liquid blocking block 32 corresponds to the position of the metal waveguide hole 311; the liquid blocking block 32 is fixedly connected to the inner side wall of the evaporation chamber 1, and one end of the liquid blocking block 32 is attached to the inner wall surface of the evaporation chamber 1; the liquid blocking block 32 is made of a wave-passing material; during operation, the microwave emitted by the microwave emitter 31 passes through the metal waveguide hole 311 and passes through the liquid blocking block 32 into the evaporation chamber 1, and the emitted microwave performs secondary concentration and drying on the residual liquid obtained by evaporating the saturated steam in the evaporation chamber 1. The liquid blocking block 32 made of a wave-passing material can not only allow the microwave to pass through itself and enter the evaporation chamber 1, but also block sewage from entering the microwave emitter 31.

[0024] Embodiment 2

[0025] As Figures 1 to 3 shown, on the basis of Embodiment 1, one end of the sewage vapor outlet pipe 13 is connected to a heat exchanger 41; the heat exchanger 41 is fixedly connected to the second support frame 4; a circulation pipe 24 is fixedly connected to the middle position of the evaporation chamber 1; the circulation pipe 24 is sequentially connected to a circulation pump 42 and the heat exchanger 41, and the end of the circulation pipe 24 is fixedly connected to the top of the evaporation chamber 1; the circulation pump 42 is fixedly connected to the second support frame 4; during operation, when the saturated steam evaporates the sewage, the sewage vapor enters the heat exchanger 41 from the sewage vapor outlet pipe 13 and then is discharged. The circulation pump 42 transports the sewage in the evaporation chamber 1 to the heat exchanger 41 for heat exchange, and the heat-exchanged sewage then enters from the top of the evaporation chamber 1. The use of the heat exchanger 41 makes full use of the secondary heat discharged by the evaporation mechanism, improves the heat utilization rate, and reduces the energy consumption required for sewage treatment.

[0026] Embodiment 3

[0027] As Figures 1 to 3 shown, on the basis of Embodiment 1 and Embodiment 2, a motor box 5 is fixedly connected to the top of the evaporation chamber 1; the motor box 5 drives a rotating rod 51, and the rotating rod 51 penetrates through the top of the evaporation chamber 1; a group of rotating plates 52 are fixedly connected to the rotating rod 51; one end of the rotating plate 52 is fixedly connected to an arc-shaped scraping plate 521, and the arc-shaped scraping plate 521 is attached to the inner side wall of the evaporation chamber 1; a group of scraping plates 53 are fixedly connected to the bottom of the rotating rod 51, and the scraping plates 53 are located below the rotating plates 52; the scraping plates 53 are attached to the bottom wall of the evaporation chamber 1; during operation, when the saturated steam evaporates the sewage, the motor box 5 drives the rotating rod 51 to rotate, and the rotating rod 51 drives the rotating plates 52 to stir the sewage, accelerating the sewage evaporation speed. At the same time, the setting of the arc-shaped scraping plate 521 and the scraping plates 53 can effectively prevent the residual liquid residue after sewage evaporation and the residual liquid residue after further concentration of the microwave from adhering to the inner wall of the evaporation chamber 1. At the same time, the rotation of the scraping plates 53 is also beneficial to the discharge of the concentrated residual liquid residue.

[0028] A baffle plate 14 is fixedly connected to the inner wall of the evaporation chamber 1; a group of diversion openings 142 are formed in the baffle plate 14; an annular diversion plate 141 is fixedly connected to the baffle plate 14; during operation, the sewage entering from the sewage inlet pipe 12 and the circulating sewage entering from the circulating pipe 24 are diverted into the evaporation chamber 1 through the diversion plate and the diversion openings 142, preventing the sewage from impacting and causing damage to the device.

[0029] Working principle: The sewage entering from the sewage inlet pipe 12 is diverted into the evaporation chamber 1 through the diversion plate and the diversion openings 142. The motor box 5 drives the rotating rod 51 to rotate, and the rotating rod 51 drives the rotating plate 52 to stir the sewage. Saturated steam is input through the saturated steam inlet pipe 21, and the saturated steam entering the heating jacket 2 heats and evaporates the sewage in the evaporation chamber 1. The condensed water obtained from the condensation of the saturated steam is discharged through the condensed water outlet pipe 22. The sewage vapor obtained by evaporating the sewage with the saturated steam enters the heat exchanger 41 through the sewage vapor outlet pipe 13 and then is discharged. The circulating pump 42 transports the sewage in the evaporation chamber 1 to the heat exchanger 41 for heat exchange, and the heat-exchanged sewage then enters from the top of the evaporation chamber 1. The residual liquid obtained by evaporating the saturated steam is further concentrated by the microwave emitted by the microwave emitter 31. During the concentration period, the arc-shaped scraper 521 and the scraping plate 53 scrape the residual liquid and residue adhering to the inner wall of the evaporation chamber 1, and the finally obtained residual liquid and residue are discharged through the residual liquid outlet pipe 11 and sent for post-treatment.

[0030] The above front, back, left, right, up, and down are all based on the Figure 1 in the attached drawings of the specification. Taking the perspective of the observer as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A low temperature drying device with a microwave transmitter, characterized in that: The invention comprises a second support frame (4) and an evaporation mechanism; the evaporation mechanism comprises an evaporation chamber (1), and a heating jacket (2) is arranged outside the evaporation chamber (1); a residual liquid outlet pipe (11) is fixedly connected to and communicated with the bottom of the evaporation chamber (1); the residual liquid outlet pipe (11) passes through the heating jacket (2) and is not communicated with the heating jacket (2); a sewage inlet pipe (12) and a sewage steam outlet pipe (13) are fixedly connected to the top of the evaporation chamber (1); a pair of microwave emission boxes (3) are fixedly connected to the outer wall of the bottom of the evaporation chamber (1), and the microwave emission boxes (3) extend out of the heating jacket (2); a group of microwave emitters (31) are installed in the microwave emission box (3); a first support frame (23) is fixedly connected to the bottom of the heating jacket (2); a saturated steam inlet pipe (21) and a condensed water outlet pipe (22) are fixedly connected to the outer wall of the heating jacket (2).

2. The low-temperature drying device with a microwave transmitter according to claim 1, characterized in that: The microwave emitting body (31) is provided with a metal waveguide hole (311); the microwave emitting body (31) is fixedly connected with a liquid blocking block (32), and the position of the liquid blocking block (32) corresponds to the metal waveguide hole (311); the liquid blocking block (32) is fixedly connected to the inside of the side wall of the evaporation chamber (1), and one end of the liquid blocking block (32) is in contact with the inner wall surface of the evaporation chamber (1); the liquid blocking block (32) is made of a wave-piercing material.

3. The low-temperature drying device with a microwave transmitter according to claim 1, characterized in that: One end of the sewage vapor outlet pipe (13) is connected to a heat exchanger (41); the heat exchanger (41) is fixedly connected to the second support frame (4); a circulation pipe (24) is fixedly connected to the middle of the evaporation chamber (1); the circulation pipe (24) is connected to a circulation pump (42) and the heat exchanger (41) in sequence, and the end of the circulation pipe (24) is fixedly connected to the top of the evaporation chamber (1); the circulation pump (42) is fixedly connected to the second support frame (4).

4. The low-temperature drying device with a microwave transmitter according to claim 3, characterized in that: The top of the evaporation chamber (1) is fixedly connected to a motor box (5); the motor box (5) drives a rotating rod (51), and the rotating rod (51) passes through the top of the evaporation chamber (1); a group of rotating plates (52) are fixedly connected to the rotating rod (51); an arc-shaped scraper (521) is fixedly connected to one end of the rotating plate (52), and the arc-shaped scraper (521) is in contact with the inner side wall of the evaporation chamber (1); a group of scraping plates (53) are fixedly connected to the bottom of the rotating rod (51), and the scraping plates (53) are located below the rotating plates (52); and the scraping plates (53) are in contact with the inner bottom wall of the evaporation chamber (1).

5. The low-temperature drying device with a microwave transmitter according to claim 4, characterized in that: The inner wall of the evaporation chamber (1) is fixedly connected with a baffle plate (14); a group of flow diversion ports (142) are provided on the baffle plate (14); and an annular flow diversion plate (141) is fixedly connected to the baffle plate (14).

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