An integrated MVR evaporator for high-salinity wastewater

Abstract

The present invention relates to the technical field of evaporators, and in particular to an integrated MVR evaporator for high-salt wastewater. The evaporator comprises an evaporation tank, a recovery tank, a compressor and a heat exchanger; the evaporation tank comprises a tank body, a raw liquid delivery pipe arranged on one side of the tank body, a second steam inlet and a second steam outlet installed on the tank body, and a demister installed inside the tank body; a filter tube is installed between the tank body and the raw liquid delivery pipe, and a filter residue assembly is arranged in the filter tube. The evaporator filters out debris and larger salt crystals in the raw liquid delivery pipe by setting a filter residue assembly, and recycles wastewater containing impurities through a recovery tank, dissolves internal salt crystals, and allows the wastewater to enter from the input end of the heat exchanger together with the raw liquid of high-salt wastewater, and is evaporated again, thereby completely separating the debris from the high-salt wastewater, making it convenient to centrally clean up the debris.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, and more specifically, to an integrated MVR evaporator for high-salinity wastewater. Background Art

[0002] High-salt wastewater refers to wastewater with a total salt content greater than 1% from domestic sewage and industrial wastewater, containing high inorganic ions such as C l-, SO42-, Na+, Ca2+, and also containing organic matter such as glycerol and medium and low carbon chains. In the purification of high-salt wastewater, MVR high-salt wastewater evaporator is often used to evaporate the wastewater. MVR high-salt wastewater evaporator sends wastewater into an evaporation tank and evaporates the water therein by heating. After the evaporation and condensation process, impurities such as salt in the wastewater are separated to achieve wastewater purification. In the prior art, it is necessary to pre-treat the high-salt wastewater, such as precipitation, filtration, pH adjustment, etc., to remove or reduce suspended matter, grease, salt precipitation and organic pollutants in the wastewater, and then the pre-treated high-salt wastewater is transported to the MVR evaporator for evaporation.

[0003] Although most of the impurities in the high-salt wastewater have been removed by pretreatment, the long-term corrosion of the high-salt wastewater will produce a large amount of debris on the inner wall of the pipe. In addition, due to the high salt concentration in the wastewater, larger salt crystal particles will remain, resulting in reduced evaporation efficiency when entering the evaporator. Therefore, a new type of high-salt wastewater integrated MVR evaporator is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-salinity wastewater integrated MVR evaporator with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An integrated MVR evaporator for high-salinity wastewater, comprising an evaporation tank, a recovery tank, a compressor and a heat exchanger;

[0007] The evaporator comprises a tank body, a first steam inlet installed on one side of the tank body, a first steam outlet installed on the top of the tank body, a slag discharge port and a liquid discharge port installed on the bottom of the tank body, a raw liquid delivery pipe provided on one side of the tank body, a second steam inlet and a second steam outlet installed on the tank body, and a demister installed inside the tank body;

[0008] The recovery box comprises a box body, a first waste liquid recovery port, a second waste liquid recovery port, a third steam inlet and a recovery liquid discharge port installed on the box body;

[0009] A filter tube is installed between the tank body and the raw liquid delivery pipe, and a filter residue assembly is provided in the filter tube, the filter residue assembly includes an inner tube arranged on the inner wall of the filter tube, and a fixed tube is fixedly connected to the inner tube, both sides of the fixed tube are fixedly connected to the inner wall of the tank body, a slide groove is provided on the inner wall of the inner tube, and a first filter plate is slidably connected in the slide groove, and the first filter plate is used to filter out debris and salt crystals.

[0010] As a further optimization scheme of the present invention, a flushing cavity is opened in the filter tube, and a water inlet and a sewage outlet are installed on the filter tube, and the water inlet and the sewage outlet are both connected with the inside of the flushing cavity, a first electric valve is installed on the water inlet, and a second electric valve is installed on the sewage outlet, and a first port and a second port are installed on the inner tube, the first port is located on the right side of the first filter plate, and the second port is located on the left side of the first filter plate, and a one-way valve is installed in the first port and the second port.

[0011] As a further optimization scheme of the present invention, a motor is installed on the tank body, and a first bevel gear is installed at the output shaft of the motor, a second bevel gear is meshedly connected to the first bevel gear, and a third bevel gear is meshedly connected to the second bevel gear, a connecting shaft is installed on the second bevel gear, and an intermittent vibration cleaning assembly is provided between the connecting shaft and the fixed pipe.

[0012] As a further optimization scheme of the present invention, the intermittent vibration cleaning assembly includes a connecting rod slidably connected to both sides of the fixed tube, and a second spring is provided on the connecting rod, one end of the second spring is fixedly connected to the inner wall of the fixed tube, and the other end of the second spring is fixedly connected to the first protruding rod, one end of the connecting rod is equipped with the first protruding rod, and the first protruding rod is slidably matched with the first arc track, a connecting shaft is installed on the second bevel tooth, and the connecting shaft is connected to the first arc track.

[0013] As a further optimization scheme of the present invention, a top plate is installed at one end of the connecting rod close to the first filter plate, and a plurality of ejector pins are arranged on the top plate. A plurality of filter holes are arranged on the first filter plate, and the plurality of filter holes correspond to the plurality of ejector pins one by one.

[0014] As a further optimization scheme of the present invention, the connecting rod is slidably connected to the inside of the first filter plate with a knocking column, and a knocking block is installed at one end of the knocking column close to the first filter plate, a third spring is provided on the knocking column, a second protruding rod is installed at one end of the knocking column away from the connecting rod, and a second arc track is slidably fitted on the second protruding rod, and the second arc track is fixedly connected to the connecting shaft.

[0015] As a further optimization solution of the present invention, first springs are installed between the two sides of the first filter plate and the slide groove.

[0016] As a further optimization scheme of the present invention, a circular ring is installed on the second conical tooth, and a plurality of evaporation plates are installed on the circular ring. An evaporation assembly is also provided in the evaporation plate to assist in evaporation of the high-salt wastewater stock solution in the tank body.

[0017] As a further optimization scheme of the present invention, the evaporation component includes a steam pipe arranged in the tank body, and a ventilation pipe is arranged below the steam pipe, a first sliding pipe is installed on the ventilation pipe, and a second sliding pipe is slidably connected to the first sliding pipe, the second sliding pipe is installed on the steam pipe, and an air intake channel is opened on one side of the steam pipe and an exhaust channel is opened on the other side, and the air intake channel is connected to the interior of the ventilation pipe.

[0018] As a further optimization scheme of the present invention, probe tubes are provided in the plurality of evaporation plates, a connecting tube is provided in the ventilation tube, and the connecting tube is connected to the plurality of probe tubes, an exhaust pipe is also installed on the connecting tube, and the exhaust pipe passes through the first sliding tube and the second sliding tube to extend to the inside of the exhaust channel.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a filter residue assembly to filter out debris and larger salt crystals in the raw liquid conveying pipe, thereby solving the problem that larger salt crystals may be precipitated on the bottom or surface of the container due to the increase in salt concentration, which affects the normal operation of the equipment under long-term use, and the wastewater containing impurities is recovered through a recovery box, and the wastewater is heated to dissolve the internal salt crystals, so that the wastewater and the high-salt wastewater raw liquid enter from the input end of the heat exchanger together, and are evaporated again, so that the debris is completely separated from the high-salt wastewater, which is convenient for centralized cleaning of the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a high-salinity wastewater treatment flow chart of the present invention;

[0021] Figure 2 It is a three-dimensional diagram of the overall structure of the evaporation tank of the present invention;

[0022] Figure 3 is a cross-sectional view of the recycling box structure of the present invention;

[0023] Figure 4 is a cross-sectional view of the evaporation tank structure of the present invention;

[0024] Figure 5 The present invention Figure 4 A magnified view of the local structure at center A;

[0025] Figure 6 The present invention Figure 4 A magnified view of the local structure at B in the middle;

[0026] Figure 7It is a three-dimensional diagram of the structure of the intermittent vibration cleaning assembly of the present invention;

[0027] Figure 8 It is a top view of the first protruding rod, the second protruding rod, the first arc-shaped track and the second arc-shaped track structure of the present invention;

[0028] Fig. 9 It is a cutaway stereoscopic diagram of the internal structure of the filter tube of the present invention;

[0029] Fig.10 It is a partial structural stereogram of the intermittent vibration cleaning assembly of the present invention;

[0030] Fig.11 It is a three-dimensional diagram of the partial structure of the scraping component and the evaporation component of the present invention.

[0031] In the figure: 100, evaporation tank; 101, tank body; 102, first steam inlet; 103, first steam outlet; 104, slag outlet; 105, liquid outlet; 106, raw liquid delivery pipe; 107, second steam inlet; 108, second steam outlet; 109, demister; 110, filter tube; 111, inner tube; 112, fixed tube; 113, first filter plate; 114, first spring; 115, first scraper; 116, flushing chamber ; 117, water inlet; 118, sewage outlet; 119, first port; 120, second port; 121, motor; 122, first bevel gear; 123, second bevel gear; 124, third bevel gear; 125, connecting rod; 126, second spring; 127, first protruding rod; 128, first arc track; 129, connecting shaft; 130, second scraper; 131, ring; 132, third scraper; 133, evaporation plate; 134, fourth scraper ; 135, connecting frame; 136, screw pair; 137, reciprocating screw; 138, bracket; 139, gear; 140, internal gear ring; 141, steam pipe; 142, ventilation pipe; 143, first sliding pipe; 144, second sliding pipe; 145, air inlet channel; 146, exhaust channel; 147, probe tube; 148, connecting pipe; 149, exhaust pipe; 150, top plate; 151, ejector pin; 152, knocking column; 153, knocking block ; 154, third spring; 155, second protruding rod; 156, second arc track; 157, rotating ring; 158, fixed frame; 200, recovery box; 201, box body; 202, first waste liquid recovery port; 203, second waste liquid recovery port; 204, third steam inlet; 205, recovery liquid discharge port; 206, second filter plate; 207, slide; 208, support plate; 209, bolt; 300, compressor; 400, heat exchanger. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0033] Please see attached Figure 1 To Attachment Figure 4 , an integrated MVR evaporator for high-salinity wastewater, comprising an evaporation tank 100, a recovery tank 200, a compressor 300 and a heat exchanger 400. The evaporation tank 100 comprises a tank body 101, a first steam inlet 102 installed on one side of the tank body 101, a first steam outlet 103 installed on the top of the tank body 101, a slag discharge port 104 and a liquid discharge port 105 installed on the bottom of the tank body 101, a raw liquid delivery pipe 106 provided on one side of the tank body 101, a second steam inlet 107 and a second steam outlet 108 installed on the tank body 101, and a demister 109 installed inside the tank body 101. The recovery tank 200 comprises a tank body 201, a first waste liquid recovery port 202 installed on the tank body 201, a second waste liquid recovery port 203, a third steam inlet 204 and a recovery liquid discharge port 205. When the high-salt wastewater raw liquid enters from the input end of the heat exchanger 400, the high-salt wastewater raw liquid is preheated through the heat exchanger 400, and the preheated high-salt wastewater raw liquid enters the evaporation tank 100 through the output end of the heat exchanger 400 to evaporate the high-salt wastewater raw liquid.

[0034] Specifically, the first steam outlet 103 on the tank body 101 is connected to the air inlet of the compressor 300, and the air outlet of the compressor 300 is connected to the heat exchanger 400, and the air outlet of the heat exchanger 400 is connected to the first steam inlet 102 and the second steam inlet 107, and the second steam outlet 108 on the tank body 101 is connected to the third steam inlet 204 on the box body 201. The slag discharge port 104 on the tank body 101 is connected to the second waste liquid recovery port 203 on the box body 201.

[0035] It should be understood that, during the treatment process, the secondary steam is output from the first steam outlet 103 to the compressor 300, and is pressurized twice by the compressor 300 to enter the heat exchanger 400, and the steam is heated by the heat exchanger 400, and is input to the first steam inlet 102 and the second steam inlet 107, and the high-salt wastewater stock solution inside the evaporation tank 100 is evaporated. After the evaporation and condensation process, impurities such as salt in the wastewater are separated, and the condensed water is discharged from the heat exchanger 400. Among them, the specific working principles of the evaporation tank 100, the compressor 300 and the heat exchanger 400 are all existing technologies well known to those skilled in the art, and will not be described in detail here.

[0036] Optional, see attached Figure 5 In order to prevent debris generated by corrosion of the inner wall of the raw liquid delivery pipe 106 and larger salt crystals remaining in the high-salt wastewater from entering the evaporation tank 100, a filter tube 110 is installed between the tank body 101 and the raw liquid delivery pipe 106, and a filter residue assembly is provided in the filter tube 110 for filtering out debris and larger salt crystals in the raw liquid delivery pipe 106. In this embodiment, the filter residue assembly includes an inner tube 111 arranged on the inner wall of the filter tube 110, and a fixed tube 112 is fixedly connected to the inner tube 111, and both sides of the fixed tube 112 are fixedly connected to the inner wall of the tank body 101. A chute is provided on the inner wall of the inner tube 111, and a first filter plate 113 is slidably connected in the chute. The first filter plate 113 is used to filter out debris and salt crystals, thereby solving the problem that larger salt crystals may be precipitated on the bottom or surface of the container due to the increase in salt concentration, which affects the normal operation of the equipment under long-term use.

[0037] Furthermore, a first scraper 115 is provided on one side of the inner tube 111, and a rotating ring 157 is installed at one end of the first scraper 115. The rotating ring 157 is rotatably connected to the inner tube 111 through a bearing. In the present embodiment, when the rotating ring 157 rotates, the first scraper 115 scrapes off the sediment and adsorbed substances on the inner tube 111 to avoid sedimentation on the inner tube 111, thereby cleaning the inner tube 111.

[0038] Optional, see attached Figure 5 In the present embodiment, a flushing chamber 116 is provided in the filter tube 110, and a water inlet 117 and a sewage outlet 118 are installed on the filter tube 110. Both the water inlet 117 and the sewage outlet 118 are communicated with the inside of the flushing chamber 116. A first electric valve is installed on the water inlet 117, and the first electric valve can be connected to an external pipeline of the cleaning liquid. The sewage outlet 118 is connected to the first waste liquid recovery port 202, and a second electric valve is installed on the sewage outlet 118 for controlling the discharge of the liquid in the flushing chamber 116.

[0039] Specifically, a first opening 119 and a second opening 120 are installed on the inner tube 111. The first opening 119 is located on the right side of the first filter plate 113, and the second opening 120 is located on the left side of the first filter plate 113. In the present embodiment, one-way valves are installed in the first opening 119 and the second opening 120. When the flushing liquid enters from the first opening 119, it passes through the first filter plate 113 and is discharged through the second opening 120, while the liquid in the flushing cavity 116 cannot enter the inner tube 111 through the second opening 120.

[0040] Among them, a third electric valve is installed in both the filter tube 110 and the fixed tube 112. When the first filter plate 113 needs to be cleaned, the third electric valve is controlled to close the filter tube 110 and the fixed tube 112, so that when the cleaning liquid is used to flush the first filter plate 113, the cavity in the inner tube 111 forms a closed space, which is convenient for the cleaning liquid to backwash the first filter plate 113, discharge impurities to the outside, and discharge them into the first waste liquid recovery port 202 through the sewage outlet 118.

[0041] For further information, please see the attached Figure 2 and attached Figure 4 A motor 121 is installed on the tank body 101, and a first bevel gear 122 is installed at the output shaft of the motor 121, the first bevel gear 122 is meshed with a second bevel gear 123, the second bevel gear 123 is meshed with a third bevel gear 124, and the third bevel gear 124 is fixedly connected with a fixing frame 158, and the fixing frame 158 is fixedly connected to the rotating ring 157. In this embodiment, when the motor 121 is controlled to rotate, the first bevel gear 122 rotates synchronously, and the first bevel gear 122, the second bevel gear 123 and the third bevel gear 124 are meshed and connected, thereby driving the rotating ring 157 to rotate.

[0042] Optional, see attached Figure 3 A second filter plate 206 is provided in the box body 201. In the present embodiment, it is convenient to filter the liquid discharged from the flushing chamber 116, and to dissolve the salt crystals for a second time by steam heating, thereby separating the debris from the high-salt wastewater. In the present embodiment, slideways 207 slidably connected to the second filter plate 206 are provided on both sides of the box body 201. A support plate 208 is installed at one end of the second filter plate 206, and a bolt 209 is provided on the support plate 208. The bolt 209 is threadedly connected to the outer wall of the box body 201. By releasing the threaded connection of the bolt 209, the fixation between the support plate 208 and the box body 201 is released, and the second filter plate 206 is moved outward, thereby facilitating the cleaning of the debris on the second filter plate 206.

[0043] Optional, see attached Figure 5 , and attached Figure 7 To Attachment Fig.10In order to avoid the problem that the first filter plate 113 is blocked by impurities generated in the wastewater during operation, thereby affecting the high-salt wastewater transportation efficiency, in the present embodiment, an intermittent vibration cleaning assembly is provided inside the fixed tube 112, and the intermittent vibration cleaning assembly includes a connecting rod 125 slidably connected to both sides of the fixed tube 112, and a second spring 126 is provided on the connecting rod 125, one end of the second spring 126 is fixedly connected to the inner wall of the fixed tube 112, and the other end of the second spring 126 is fixedly connected to the first protruding rod 127, one end of the connecting rod 125 is installed with the first protruding rod 127, and the first protruding rod 127 is slidably matched with the first arc track 128, and a connecting shaft 129 is installed on the second bevel gear 123, and the connecting shaft 129 is connected to the first arc track 128.

[0044] Among them, a top plate 150 is installed at one end of the connecting rod 125 close to the first filter plate 113, and a plurality of ejector pins 151 are provided on the top plate 150. A plurality of filter holes are provided on the first filter plate 113, and the plurality of filter holes correspond to the plurality of ejector pins 151 one by one. In this embodiment, the two groups of first arc tracks 128 are staggered, that is, when the connecting shaft 129 rotates, the first arc track 128 squeezes the first protruding rod 127, so that the connecting rod 125 drives the top plate 150 to move the first filter plate 113, so that the ejector pins 151 on the top plate 150 are inserted into the filter holes to eject impurities in the filter holes.

[0045] Secondly, by setting the top plate 150, when high-salt wastewater is continuously supplied with liquid, it can avoid that impurities are impacted into the filter holes by the liquid again, causing the first filter plate 113 to be blocked again. In addition, by continuously rotating the connecting shaft 129, the two first arc-shaped tracks 128 are alternately squeezed with the first protruding rod 127, pushing the connecting rod 125 to move, thereby controlling the top pin 151 to alternately clear the filter holes on both sides of the first filter plate 113.

[0046] Specifically, the connecting rod 125 is slidably connected to the inside of the first filter plate 113 with a knocking column 152, and a knocking block 153 is installed at one end of the knocking column 152 close to the first filter plate 113, a third spring 154 is provided on the knocking column 152, and one end of the third spring 154 is fixedly connected to the knocking block 153, and the other end of the third spring 154 is fixedly connected to the inner wall of the knocking column 152, a second protruding rod 155 is installed at one end of the knocking column 152 away from the connecting rod 125, and a second arc track 156 is slidably fitted on the second protruding rod 155, and the second arc track 156 is fixedly connected to the connecting shaft 129.

[0047] Furthermore, first springs 114 are installed between the two sides of the first filter plate 113 and the slide groove. When the knocking block 153 knocks the connecting rod 125, the first filter plate 113 vibrates due to the elastic expansion and contraction of the first springs 114.

[0048] It should be understood that when the second bevel gear 123 rotates, the first scraper 115 scrapes off the attachments on the inner tube 111, and when the third bevel gear 124 rotates, the connecting shaft 129 rotates synchronously, so that the first arc track 128 rotates around the connecting shaft 129, driving the first protruding rod 127 to move synchronously, so that the connecting rod 125 drives the top plate 150 to move synchronously, and the top pins 151 are inserted into the filter holes in the first filter plate 113 one by one, so that the impurities blocked in the filter holes are removed, and the first arc track 128 contacts the first protruding rod 127. When the second arc track 156 drives the second protruding rod 155, providing an outward traction force to the second protruding rod 155, so that the knocking column 152 moves outward, so that the third spring 154 produces elastic deformation and has a restoring force. When the second arc track 156 and the second protruding rod 155 are released from the limit, the knocking block 153 knocks the connecting rod 125, and the knocking force is transmitted to the first filter plate 113 through the connecting rod 125, so that the first filter plate 113 vibrates, and the impurities on the first filter plate 113 are better removed by vibration, so as to avoid the first filter plate 113 from being blocked. At the same time, the second bevel gear 123 rotates to drive the second scraper 130 to clean the salt adsorbed on the inner wall of the tank body 101.

[0049] Optional, see attached Figure 4 A second scraper 130 is installed at one end of the connecting shaft 129 away from the second bevel gear 123, and the second scraper 130 contacts the bottom end of the inner wall of the tank body 101. The connecting shaft 129 rotates to drive the second scraper 130 to scrape off the sediment at the bottom of the tank body 101, thereby avoiding accumulation caused by long-term use and avoiding affecting the normal use of the equipment.

[0050] Optional, see attached Figure 4 A ring 131 is also installed on the second bevel gear 123, and the ring 131 is connected to the inner wall bearing of the tank body 101. A third scraper 132 is installed on both sides of the ring 131. Through the action of the third scraper 132, under the rotation of the second bevel gear 123, the third scraper 132 is driven to scrape and clean the adsorbed matter on the inner wall of the tank body 101.

[0051] In this embodiment, a plurality of evaporation plates 133 are installed on the ring 131, and scraping components are provided on both sides of the evaporation plate 133 for scraping off the salt adsorbed on the evaporation plate 133. An evaporation component is also provided inside the evaporation plate 133 for assisting the evaporation of the high-salt wastewater stock solution in the tank body 101 and improving the evaporation efficiency.

[0052] For details, please refer to the attached Fig.11The scraping assembly includes a fourth scraper 134 arranged on both sides of the evaporation plate 133, a connecting frame 135 is also provided on the evaporation plate 133, and the connecting frame 135 is fixedly connected to the fourth scraper 134, a reciprocating screw 137 is provided on the connecting frame 135, and a screw pair 136 is provided on the reciprocating screw 137, the screw pair 136 is fixedly connected to the connecting frame 135, and the bearings at both ends of the reciprocating screw 137 are connected to brackets 138, and the bracket 138 is fixedly connected to the ring 131, an inner gear ring 140 is also installed on the inner wall of the tank body 101, and a gear 139 is meshed and connected to the inner gear ring 140, and the gear 139 is fixedly connected to the reciprocating screw 137.

[0053] It should be noted that when the first bevel gear 122 drives the second bevel gear 123 to rotate, the evaporation plate 133 moves synchronously, and multiple evaporation plates 133 are used to stir and mix the high-salt wastewater. During the rotation process, the gear 139 moves in a circle with the center of the second bevel gear 123 as the center, and the gear 139 is meshed with the inner gear ring 140, so that during the rotation process, the second bevel gear 123 controls the third scraper 132 to move back and forth outside the evaporation plate 133 to scrape off the salt adsorbed on the outer wall of the evaporation plate 133, so that during the evaporation of the high-salt wastewater, the salt deposited in the tank body 101 can be fully dissolved. Secondly, when the tank body 101 is regularly cleaned, the internal debris can be discharged from the slag discharge port 104 for recycling.

[0054] For further information, please see the attached Figure 4 , Attachment Figure 6 and attached Fig.11 The evaporation component includes a steam pipe 141 arranged in the tank body 101, and a ventilation pipe 142 is arranged below the steam pipe 141, a first sliding pipe 143 is installed on the ventilation pipe 142, and a second sliding pipe 144 is slidably connected to the first sliding pipe 143, and the second sliding pipe 144 is installed on the steam pipe 141, an air intake channel 145 is opened on one side of the steam pipe 141, and an exhaust channel 146 is opened on the other side, the air intake channel 145 is connected with the inside of the ventilation pipe 142, and the arrangement of the first sliding pipe 143 and the second sliding pipe 144 facilitates the air intake channel 145 to continuously supply steam to the inside of the evaporation plate 133 when the evaporation plate 133 rotates.

[0055] Furthermore, probe tubes 147 are provided in the plurality of evaporation plates 133, connecting tubes 148 are provided in the ventilation tube 142, and the connecting tubes 148 are connected to the plurality of probe tubes 147, an exhaust pipe 149 is also installed on the connecting tube 148, and the exhaust pipe 149 extends to the inside of the exhaust channel 146 through the first sliding tube 143 and the second sliding tube 144. In the present embodiment, the probe tube 147 is used to discharge the steam discharged into the evaporation plate 133 into the exhaust channel 146, and discharge it to the third steam inlet 204 through the second steam outlet 108, heat the recovery liquid in the box body 201, and discharge the heated recovery liquid from the recovery liquid discharge port 205 to the input end of the heat exchanger 400, so as to perform secondary recovery of the recovery liquid.

[0056] It should be noted that the preheated high-salt wastewater enters from the raw liquid delivery pipe 106, and the impurities in the high-salt wastewater are filtered through the first filter plate 113, and the filtered high-salt wastewater is delivered to the tank body 101 for evaporation treatment. The heating steam enters through the first steam inlet 102 and the second steam inlet 107, enters the vent pipe 142 through the air inlet channel 145, and is diverted through the vent pipe 142, so that the heating steam enters multiple evaporation plates 133 to evaporate the high-salt wastewater.

[0057] When the motor 121 is working, the first bevel gear 122, the second bevel gear 123 and the third bevel gear 124 are meshed and connected to control the evaporation plate 133 to rotate, and the high-salt wastewater in the tank body 101 is stirred and treated by the evaporation plate 133. At the same time, under the rotation of the second bevel gear 123, the evaporation plate 133 evaporates the high-salt wastewater while stirring, thereby improving the evaporation efficiency. Secondly, through the setting of the probe 147, it is convenient to discharge the internal heating steam into the exhaust channel 146, so that the steam is transported from the second steam outlet 108 to the third steam inlet 204, and the recovery liquid in the box body 201 is heated and treated, which is convenient for secondary heating and dissolving the internal salt crystals, and the heated recovery liquid is discharged from the recovery liquid discharge port 205 to the input end of the heat exchanger 400, and the recovery liquid is recovered for a second time.

[0058] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. An integrated MVR evaporator for high-salinity wastewater, comprising an evaporation tank (100), a recovery tank (200), a compressor (300) and a heat exchanger (400); The evaporation tank (100) comprises a tank body (101), a first steam inlet (102) installed on one side of the tank body (101), a first steam outlet (103) installed on the top of the tank body (101), a slag discharge port (104) and a liquid discharge port (105) installed on the bottom of the tank body (101), a raw liquid delivery pipe (106) provided on one side of the tank body (101), a second steam inlet (107) and a second steam outlet (108) installed on the tank body (101), and a demister (109) installed inside the tank body (101); The recovery box (200) comprises a box body (201), a first waste liquid recovery port (202) installed on the box body (201), a second waste liquid recovery port (203), a third steam inlet (204) and a recovery liquid discharge port (205); characterized in that: A filter tube (110) is installed between the tank body (101) and the raw liquid delivery pipe (106), and a filter residue assembly is provided in the filter tube (110), the filter residue assembly comprising an inner tube (111) provided on the inner wall of the filter tube (110), and a fixed tube (112) is fixedly connected to the inner tube (111), and both sides of the fixed tube (112) are fixedly connected to the inner wall of the tank body (101), a slide groove is provided on the inner wall of the inner tube (111), and a first filter plate (113) is slidably connected in the slide groove, and the first filter plate (113) is used to filter out debris and salt crystals; The tank body (101) is mounted with a motor (121), and a first bevel gear (122) is mounted on the output shaft of the motor (121); a second bevel gear (123) is meshedly connected to the first bevel gear (122), and a third bevel gear (124) is meshedly connected to the second bevel gear (123); a connecting shaft (129) is mounted on the second bevel gear (123), and an intermittent vibration cleaning assembly is provided between the connecting shaft (129) and the fixed pipe (112); The intermittent vibration cleaning assembly comprises a connecting rod (125) slidably connected to both sides of the interior of the fixed tube (112), and a second spring (126) is provided on the connecting rod (125), one end of the second spring (126) is fixedly connected to the inner wall of the fixed tube (112), and the other end of the second spring (126) is fixedly connected to the first protruding rod (127), one end of the connecting rod (125) is installed with the first protruding rod (127), and the first protruding rod (127) is slidably matched with the first arc track (128), and a connecting shaft (129) is installed on the second bevel gear (123), and the connecting shaft (129) is connected to the first arc track (128); A top plate (150) is installed at one end of the connecting rod (125) close to the first filter plate (113), and a plurality of ejector pins (151) are provided on the top plate (150); a plurality of filter holes are provided on the first filter plate (113), and the plurality of filter holes correspond to the plurality of ejector pins (151) in a one-to-one manner; A knocking column (152) is slidably connected to the inside of the connecting rod (125) away from the first filter plate (113), and a knocking block (153) is installed on one end of the knocking column (152) close to the first filter plate (113), a third spring (154) is provided on the knocking column (152), a second protruding rod (155) is installed on one end of the knocking column (152) away from the connecting rod (125), and a second arc track (156) is slidably matched on the second protruding rod (155), and the second arc track (156) is fixedly connected to the connecting shaft (129).

2. The high-salinity wastewater integrated MVR evaporator according to claim 1 is characterized in that: A flushing cavity (116) is provided in the filter tube (110). A water inlet (117) and a sewage outlet (118) are installed on the filter tube (110). Both the water inlet (117) and the sewage outlet (118) are connected to the inside of the flushing cavity (116). A first electric valve is installed on the water inlet (117). A second electric valve is installed on the sewage outlet (118). A first opening (119) and a second opening (120) are installed on the inner tube (111). The first opening (119) is located on the right side of the first filter plate (113). The second opening (120) is located on the left side of the first filter plate (113). Both the first opening (119) and the second opening (120) are installed with a one-way valve.

3. The high-salinity wastewater integrated MVR evaporator according to claim 1 is characterized in that: First springs (114) are installed between the two sides of the first filter plate (113) and the slide groove.

4. The high-salinity wastewater integrated MVR evaporator according to claim 1 is characterized in that: A circular ring (131) is also mounted on the second conical tooth (123), and a plurality of evaporation plates (133) are also mounted on the circular ring (131). An evaporation assembly is also provided in the evaporation plate (133) for assisting the evaporation of high-salinity wastewater stock solution in the tank body (101).

5. The high-salinity wastewater integrated MVR evaporator according to claim 4 is characterized in that: The evaporation component comprises a steam pipe (141) arranged in a tank body (101), and a ventilation pipe (142) is arranged below the steam pipe (141); a first sliding pipe (143) is installed on the ventilation pipe (142), and a second sliding pipe (144) is slidably connected to the first sliding pipe (143); the second sliding pipe (144) is installed on the steam pipe (141); an air intake channel (145) is opened on one side of the steam pipe (141), and an air exhaust channel (146) is opened on the other side; the air intake channel (145) is connected to the inside of the ventilation pipe (142).

6. The high-salinity wastewater integrated MVR evaporator according to claim 5 is characterized in that: A plurality of the evaporation plates (133) are provided with probe tubes (147), a connection tube (148) is provided in the ventilation tube (142), and the connection tube (148) is connected to the plurality of the probe tubes (147), an exhaust pipe (149) is also installed on the connection tube (148), and the exhaust pipe (149) passes through the first sliding tube (143) and the second sliding tube (144) and extends to the inside of the exhaust channel (146).

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