CN111333135B

CN111333135B - Serial-type multi-effect evaporator with descaling function and for desalting high-salinity wastewater

Info

Publication number: CN111333135B
Application number: CN202010177477.2A
Authority: CN
Inventors: 叶雪英
Original assignee: Suzhou Longfeng Titanium & Nickel Equipment Co ltd
Current assignee: SUZHOU LONGFENG TITANIUM & NICKEL EQUIPMENT CO.,LTD.
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2022-01-18
Anticipated expiration: 2040-03-13
Also published as: CN111333135A

Abstract

The invention discloses a tandem type multi-effect evaporator with a descaling function for desalting high-salinity wastewater, which comprises a first-effect tank, a second-effect tank, a heating chamber and a discharge pipe, wherein the periphery of the first-effect tank and the second-effect tank is respectively provided with the heating chamber and a heater, a rotating shaft is vertically arranged inside the second-effect tank, the top end of the rotating shaft is connected with a motor at the top end of the second-effect tank, the surface of the rotating shaft is fixedly provided with a horizontally-distributed connecting rod, the outer end of the connecting rod is provided with a vertically-distributed stirring plate, the discharge pipe is arranged on the surface of a right-side heater, and the discharge pipe is positioned below a steam pipe. This serial-type multi-effect evaporator is used in high salt waste water desalination with scale removal function uses the current structure of pipeline formula steam to replace the current structure of driven cavity formula, can utilize the flow of steam itself to drive the inside clearance structure automatic operation of heater to utilize the inside atmospheric pressure change of heater, carry out displacement control to the clearance structure in the jar body, structural design is more reasonable.

Description

Serial-type multi-effect evaporator with descaling function and for desalting high-salinity wastewater

Technical Field

The invention relates to the technical field of water pollution prevention and control, in particular to a tandem type multi-effect evaporator with a scale removal function for desalting high-salinity wastewater.

Background

Today that the problem of water pollution is gradually serious, people pay more and more attention to the rationality of the treatment of sewage and device use, in order to ensure sewage and wastewater's thorough purification treatment, can be to different treatment facility of pollution sources use in the waste water, when handling high salt waste water, comparatively common and efficient mode just use serial-type multi-effect evaporator to heat the evaporation operation, but current multi-effect evaporator has following problem when in-service use:

1. the existing multi-effect evaporator and a heat source in a double-effect tank are just hot steam generated after waste water in the first-effect tank is heated, after the hot steam is introduced into the existing double-effect tank heater, heat is absorbed by the waste water in the double-effect tank, the hot steam is condensed to generate water drops and is discharged, and as the steam is directly introduced into the double-effect tank, scale is easily generated in the heater, the heat conduction efficiency and the condensation efficiency are greatly influenced after long-time accumulation, and the existing mechanism cannot take preventive or convenient cleaning measures for the scale;

2. because need place a large amount of waste water for a long time in the jar body mechanism of evaporimeter, waste water even at the in-process of evaporation, also can make wherein impurity that contains stop the accumulation in jar internal portion, can use the clearance structure that constitutes by rubber among the prior art to combine together with the use of stirring subassembly, clear up jar internal wall when stirring waste water, nevertheless because rubber clearance structure keeps in close contact with jar internal wall for a long time, lead to its spoilage to increase substantially, and then lead to the clearance effect not good.

Disclosure of Invention

The invention aims to provide a serial multi-effect evaporator with a descaling function for desalting high-salinity wastewater, which aims to solve the problems that the inside of a heater is easy to generate scale deposit, the heat conduction efficiency and the condensation efficiency are greatly influenced after long-time accumulation, and the existing mechanism cannot take preventive or convenient cleaning measures for the scale deposit; because the rubber clearance structure keeps in close contact with the internal wall of jar for a long time, leads to its spoilage to increase substantially, and then leads to the problem that the clearance effect is not good.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high salt waste water desalination is with serial-type multi-effect evaporator with scale removal function, includes one effect jar, two effect jar, heating chamber and discharge pipe, the periphery of one effect jar and two effect jar is provided with heating chamber and heater respectively, and the heater is the tubulose and the mechanism, and angular distribution such as its central line about two effect jar, be connected through the steam pipe between one effect jar and the heater, and be linked together through the connecting pipe between the adjacent heater to the inside of heater is provided with first valve plate, first valve plate and montant are connected, and the lower terminal surface integration of first valve plate is connected with the second valve plate, the periphery of heater is provided with the annular pipe of ventilating and water-flowing annular pipe, and both are linked together with violently managing and pipe chute respectively, the bottom of heater is connected through return bend and lantern ring, and lantern ring bearing installs and is connected in the pivot, the pivot is installed perpendicularly in the inside of two effect jar, and the top of pivot is connected with the motor on two effect jar top, the fixed surface of pivot has the connecting rod of horizontal distribution, and the outer end of connecting rod installs the stirring board of vertical distribution to both have 3 groups about the equal angular distribution in center of pivot, and the internally mounted of connecting rod has the slide bar of horizontal distribution simultaneously, the discharge pipe is installed on the heater surface on right side, and the discharge pipe is located the below of steam pipe.

Preferably, the vertical rod is movably connected inside the heater, the top end of the vertical rod is in threaded connection with the sleeve through a twist rod, the sleeve is fixed in the heater, and the bottom end of the vertical rod is rotatably connected with the first valve plate and the second valve plate.

Preferably, the diameter of the second valve plate is smaller than that of the first valve plate, bent rods are distributed around the periphery of the second valve plate, and brushes attached to the inner wall of the heater are arranged on the surfaces of the bent rods.

Preferably, the horizontal pipe horizontally corresponds to a water leakage hole in the first valve plate at the lowest position, and the lower end face of the horizontal pipe is communicated with the top end of an inclined pipe which is obliquely distributed.

Preferably, the bottom end of the lantern ring is fixedly connected with the elbow, the top end of the lantern ring is communicated with the cavity inside the rotating shaft, and the inside of the cavity is connected with a third valve plate in a sliding mode.

Preferably, the control rod is installed on the upper end face of the third valve plate, the control rod is vertically connected to the inside of the rotating shaft in a sliding mode, the control rod is provided with the control block, and the arc-shaped portion of the top end of the control block is attached to the arc-shaped surface of the traction block.

Preferably, the outer end of the traction block is connected with the sliding rod, and the traction block and the sliding rod are connected inside the connecting rod in a sliding mode through a spring.

Preferably, the outer end of the sliding rod is connected with the moving plate, the moving plate is matched in the inner cavity of the stirring plate, and a cleaning layer made of rubber is fixed on the outer surface of the moving plate.

Compared with the prior art, the invention has the beneficial effects that: this serial-type multi-effect evaporator is used in high salt waste water desalination with scale removal function uses the current structure of pipeline formula steam to replace the current structure of driven cavity formula, can utilize the flow of steam itself to drive the inside clearance structure automatic operation of heater to utilize the inside atmospheric pressure change of heater, carry out displacement control to the clearance structure in the jar body, structural design is more reasonable:

1. the structural design of the first valve plate and the second valve plate can utilize the flow of hot steam in the heater to drive the hot steam and the heater to correspondingly move in the heater, so that the inner wall of the heater is scraped by utilizing the attachment of the valve plate and the heater, meanwhile, the vertical rod and the hairbrush at the bottom end of the vertical rod are driven to synchronously clean the inside of the heater by utilizing the movement of the valve plate and the thread transmission of the twist rod, and the cleaning operation and the steam introducing operation are synchronously carried out, so that the purposes of preventing scaling and automatically cleaning a small amount of scaling can be achieved without manual cleaning;

2. the structural design of third valve plate and control lever can be when steam lets in, utilize the effect of switching on of return bend, the power of third valve plate and control lever rebound is turned into with the produced positive atmospheric pressure of valve plate removal, thereby make the slide bar can corresponding horizontal slip, make the movable plate that has installed the clearance layer can just can stretch out and contact with the internal wall of jar from the stirring board when waste water needs to be heated, the clearance layer of having avoided the rubber material and the long-time extrusion contact of the internal wall of jar, guarantee the life and the clearance effect on clearance layer.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a two-effect can according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic bottom view of the second valve plate of the present invention;

FIG. 5 is a schematic cross-sectional view of the rotating shaft according to the present invention;

fig. 6 is a schematic top view of the dual-effect can of the present invention.

In the figure: 1. one-effect pot; 2. a second-effect tank; 3. a heating chamber; 4. a heater; 5. a steam pipe; 6. a first valve plate; 7. a vertical rod; 8. a sleeve; 9. a twisted rod; 10. bending a rod; 11. a second valve plate; 12. a brush; 13. a water leakage hole; 14. a venting annular tube; 15. a transverse tube; 16. an inclined tube; 17. a water circulation annular pipe; 18. bending the pipe; 19. a collar; 20. a rotating shaft; 21. a connecting rod; 22. a stirring plate; 23. a cavity; 24. a third valve plate; 25. a control lever; 26. a control block; 27. a traction block; 28. a slide bar; 29. a spring; 30. moving the plate; 31. cleaning the layer; 32. and (4) discharging the water.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a tandem type multi-effect evaporator with a descaling function for desalting high-salinity wastewater comprises a first-effect tank 1, a second-effect tank 2, a heating chamber 3, a heater 4, a steam pipe 5, a first valve plate 6, a vertical rod 7, a sleeve 8, a twist rod 9, a bent rod 10, a second valve plate 11, a brush 12, a water leakage hole 13, a ventilation annular pipe 14, a transverse pipe 15, an inclined pipe 16, a water-through annular pipe 17, a bent pipe 18, a lantern ring 19, a rotating shaft 20, a connecting rod 21, a stirring plate 22, a cavity 23, a third valve plate 24, a control rod 25, a control block 26, a traction block 27, a sliding rod 28, a spring 29, a moving plate 30, a cleaning layer 31 and a discharge pipe 32, wherein the heating chamber 3 and the heater 4 are respectively arranged on the peripheries of the first-effect tank 1 and the second-effect tank 2, the heater 4 is a tubular mechanism and is distributed at an equal angle relative to the central line of the second-effect tank 2, the first-effect tank 1 and the heater 4 are connected through the steam pipe 5, the adjacent heaters 4 are communicated through a connecting pipe, a first valve plate 6 is arranged in each heater 4, the first valve plate 6 is connected with a vertical rod 7, the lower end face of each first valve plate 6 is integrally connected with a second valve plate 11, a ventilating annular pipe 14 and a water circulating annular pipe 17 are arranged on the periphery of each heater 4, the ventilating annular pipe 14 and the water circulating annular pipe 17 are respectively communicated with a transverse pipe 15 and an inclined pipe 16, the bottom end of each heater 4 is connected with a lantern ring 19 through a bent pipe 18, the lantern ring 19 is in bearing connection with a rotating shaft 20, the rotating shaft 20 is vertically arranged in the two-effect tank 2, the top end of the rotating shaft 20 is connected with a motor at the top end of the two-effect tank 2, a horizontally distributed connecting rod 21 is fixed on the surface of the rotating shaft 20, 3 groups of vertically distributed stirring plates 22 are arranged at the outer ends of the connecting rods 21, the two groups of the stirring plates are distributed at equal angles relative to the center of the rotating shaft 20, and horizontally distributed sliding rods 28 are arranged in the connecting rods 21, the discharge pipe 32 is installed on the surface of the heater 4 on the right side, and the discharge pipe 32 is located below the steam pipe 5.

The vertical rod 7 is movably connected inside the heater 4, the top end of the vertical rod is in threaded connection with the sleeve 8 through the twist rod 9, the sleeve 8 is fixed in the heater 4, the bottom end of the vertical rod 7 is in rotary connection with the first valve plate 6 and the second valve plate 11, hot steam enters the heater 4 through the steam pipe 5, at the moment, the first valve plate 6 in the graph 2 and the graph 3 can be driven by positive air pressure to synchronously move downwards until the steam is filled in each heater 4, the first valve plate 6 moves downwards, and the outer wall of the first valve plate is tightly attached to the inner wall of the heater 4, so that the effect of cleaning the inner wall can be achieved in the sliding process.

The diameter of second valve plate 11 is less than the diameter of first valve plate 6, and the periphery of second valve plate 11 encircles and distributes and have curved bar 10, the surface of curved bar 10 is provided with the brush 12 of laminating mutually with the inner wall of heater 4, first valve plate 6 is when the downstream, montant 7 can be synchronous downstream, consequently under the screw drive effect of its top twist rod 9 and sleeve 8, montant 7 still can synchronous horizontal rotation, consequently curved bar 10 in figure 3 and figure 4 can rotate around second valve plate 11 simultaneously, consequently brush 12 that the outer wall of curved bar 10 is fixed also can play the clearance descaling effect to the inner wall of heater 4.

Violently manage 15 and the first valve plate 6 of the least on hole 13 level of leaking corresponds, and the lower terminal surface of violently managing 15 is linked together with the pipe chute 16 top that the slope distributes, when first valve plate 6 removed to the below as shown in fig. 3, the tail end of hole 13 of leaking is in the intercommunication state with violently managing 15, steam enters into the circular pipe of ventilating 14 via violently managing 15, and the drop of water of heater 4 inner wall condensation then can be under the blowing effect of steam, fall first valve plate 6 up end, and locate to flow to the circular pipe of water flowing 17 via hole 13 of leaking and violently managing 15 and pipe chute 16.

The bottom end of the lantern ring 19 is fixedly connected with the elbow 18, the top end of the lantern ring is communicated with the cavity 23 inside the rotating shaft 20, the inside of the cavity 23 is connected with a third valve plate 24 in a sliding mode, a control rod 25 is installed on the upper end face of the third valve plate 24, the control rod 25 is vertically connected inside the rotating shaft 20 in a sliding mode, a control block 26 is installed on the control rod 25, the arc-shaped portion of the top end of the control block 26 is attached to the arc-shaped surface of the traction block 27, air pressure enters the lantern ring 19 and then directly enters the cavity 23, at the moment, the third valve plate 24 in the figure 5 drives the control rod 25 to move upwards synchronously, and therefore under the guiding of the arc-shaped structures of the surfaces of the control block 26 and the traction block 27, the sliding rod 28 can synchronously slide towards the outer side in the connecting rod 21.

The outer end of the traction block 27 is connected with the slide rod 28, the outer end of the traction block and the slide rod 28 are connected inside the connecting rod 21 in a sliding mode through the spring 29, the outer end of the slide rod 28 is connected with the moving plate 30, the moving plate 30 is matched in the inner cavity of the stirring plate 22, the cleaning layer 31 made of rubber materials is fixed on the outer surface of the moving plate 30, the moving plate 30 in the figures 2 and 6 can synchronously stretch out from the inner part of the stirring plate 22, the moving plate 30 is guaranteed to stretch out to enable the cleaning layer 31 to be attached to the inner wall of the tank body only when waste water needs to be evaporated and heated, and the cleaning efficiency and the service life of the cleaning structure are guaranteed.

The working principle is as follows: the heating chamber 3 in the first-effect tank 1 is operated to make the wastewater in the first-effect tank 1 heated and evaporated correspondingly, the steam enters the heater 4 through the steam pipe 5, the hot steam in the heater 4 exchanges heat with the wastewater in the second-effect tank 2, so the wastewater in the second-effect tank 2 is heated and evaporated correspondingly, and the desalination treatment is achieved, meanwhile the hot steam is condensed in the heater 4, the water drops are discharged from the water-through annular pipe 17, and the steam is discharged from the discharge pipe 32 and the air-through annular pipe 14, which is the whole process of the evaporator, and the details are as follows:

as shown in fig. 1, hot steam enters the heaters 4 through the steam pipe 5, at this time, positive air pressure drives the first valve plate 6 in fig. 2 and 3 to move downwards synchronously until the steam is filled in each heater 4, the first valve plate 6 moves downwards, the outer wall of the first valve plate 6 is tightly attached to the inner wall of the heater 4, so that the effect of cleaning the inner wall can be achieved in the sliding process, meanwhile, when the first valve plate 6 moves downwards, the vertical rod 7 moves downwards synchronously, so that under the screw transmission action of the knurl rod 9 and the sleeve 8 at the top end, the vertical rod 7 also rotates horizontally synchronously, so that the bent rod 10 in fig. 3 and 4 rotates around the second valve plate 11 simultaneously, the brush 12 fixed on the outer wall of the bent rod 10 also has the effect of cleaning and descaling the inner wall of the heater 4, when the first valve plate 6 moves to the lowest position as shown in fig. 3, the tail end of the water leakage hole 13 is in communication with the transverse pipe 15, steam enters the ventilation annular pipe 14 through the transverse pipe 15, and water drops condensed on the inner wall of the heater 4 fall onto the upper end face of the first valve plate 6 under the blowing action of the steam and flow into the ventilation annular pipe 17 through the water leakage hole 13, the transverse pipe 15 and the inclined pipe 16;

after the first valve plate 6 moves downwards, the air in the heater 4 is originally squeezed downwards, and enters the lantern ring 19 shown in fig. 1 and 5 under the conducting action of the bent pipe 18, when the evaporation operation is performed on the waste water in the two-effect tank 2, the motor at the top end of the two-effect tank 2 can be started to drive the rotating shaft 20, the connecting rod 21 and the stirring plate 22 to synchronously rotate, so that the heat exchange contact efficiency of the waste water is enhanced, meanwhile, the evaporation operation also means that impurities in the waste water can stay in the tank body or be adhered to the inner wall of the tank body, therefore, the bent pipe 18 is designed to convey the air pressure in the heater 4 to the lantern ring 19, the air pressure directly enters the cavity 23 after entering the lantern ring 19, at the moment, the third valve plate 24 in fig. 5 can drive the control rod 25 to synchronously move upwards, and therefore, under the guiding of the arc structures on the surfaces of the control block 26 and the traction block 27, the sliding rod 28 can synchronously slide outwards in the connecting rod 21, therefore, the moving plate 30 in fig. 2 and 6 can synchronously extend out from the stirring plate 22, so that the moving plate 30 can extend out to enable the cleaning layer 31 to be attached to the inner wall of the tank body only when the waste water needs to be evaporated and heated, and the cleaning efficiency and the service life of the cleaning structure are ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high salt waste water desalination is with serial-type multi-effect evaporator with scale removal function, includes one effect jar (1), two effect jar (2), heating chamber (3) and discharge pipe (32), its characterized in that: the periphery of the first-effect tank (1) and the second-effect tank (2) is respectively provided with a heating chamber (3) and a heater (4), the heaters (4) are tubular and are distributed at equal angles relative to the central line of the second-effect tank (2), the first-effect tank (1) and the heaters (4) are connected through a steam pipe (5), adjacent heaters (4) are communicated through a connecting pipe, a first valve plate (6) is arranged inside the heaters (4), the first valve plate (6) is connected with a vertical rod (7), the lower end face of the first valve plate (6) is integrally connected with a second valve plate (11), the periphery of the heaters (4) is provided with a ventilation annular pipe (14) and a water-flowing annular pipe (17), the ventilation annular pipe and the water-flowing annular pipe are respectively communicated with a transverse pipe (15) and an inclined pipe (16), the bottom end of the heaters (4) is connected with a lantern ring (19) through a bent pipe (18), the lantern ring (19) is mounted in the rotating shaft (20) in a bearing mode and connected with the rotating shaft (20), the rotating shaft (20) is vertically mounted inside the two-effect tank (2), the top end of the rotating shaft (20) is connected with the motor at the top end of the two-effect tank (2), the surface of the rotating shaft (20) is fixedly provided with connecting rods (21) which are horizontally distributed, the outer ends of the connecting rods (21) are provided with stirring plates (22) which are vertically distributed, 3 groups of the stirring plates are distributed in an equiangular mode about the center of the rotating shaft (20), meanwhile, sliding rods (28) which are horizontally distributed are mounted inside the connecting rods (21), the discharge pipe (32) is mounted on the surface of the heater (4) on the right side, and the discharge pipe (32) is located below the steam pipe (5);

the vertical rod (7) is movably connected inside the heater (4), the top end of the vertical rod is in threaded connection with the sleeve (8) through the twist rod (9), the sleeve (8) is fixed in the heater (4), and the bottom end of the vertical rod (7) is rotatably connected with the first valve plate (6) and the second valve plate (11);

the diameter of the second valve plate (11) is smaller than that of the first valve plate (6), bent rods (10) are distributed around the periphery of the second valve plate (11), and brushes (12) attached to the inner wall of the heater (4) are arranged on the surfaces of the bent rods (10);

the bottom end of the lantern ring (19) is fixedly connected with the elbow (18), the top end of the lantern ring is communicated with a cavity (23) in the rotating shaft (20), and a third valve plate (24) is connected in the cavity (23) in a sliding mode;

the upper end surface of the third valve plate (24) is provided with a control rod (25), the control rod (25) is vertically and slidably connected inside the rotating shaft (20), the control rod (25) is provided with a control block (26), and the arc-shaped part of the top end of the control block (26) is attached to the arc-shaped surface of the traction block (27);

the first valve plate (6) is tightly attached to the inner wall of the heater (4), and the third valve plate (24) is tightly attached to the inner wall of the rotating shaft (20).

2. The tandem type multi-effect evaporator with the descaling function for the desalination of the high-salinity wastewater as claimed in claim 1, wherein: the horizontal pipe (15) horizontally corresponds to the water leakage hole (13) in the first valve plate (6) at the lowest position, and the lower end face of the horizontal pipe (15) is communicated with the top end of an inclined pipe (16) which is obliquely distributed.

3. The tandem type multi-effect evaporator with the descaling function for the desalination of the high-salinity wastewater as claimed in claim 1, wherein: the outer end of the traction block (27) is connected with a sliding rod (28), and the traction block and the sliding rod are connected inside the connecting rod (21) in a sliding mode through a spring (29).

4. The tandem type multi-effect evaporator with the descaling function for the desalination of the high-salinity wastewater as claimed in claim 1, wherein: the outer end of the sliding rod (28) is connected with a moving plate (30), the moving plate (30) is inosculated in the inner cavity of the stirring plate (22), and the outer surface of the moving plate (30) is fixed with a cleaning layer (31) made of rubber.