Discharging anti-blocking mechanism of MVR evaporator

Abstract

The utility model relates to the technical field of MVR (Mechanical Vapor Recompression) evaporators, and discloses a discharging anti-blocking mechanism of an MVR evaporator, which comprises an evaporating tank, a feeding pipe hot steam connecting pipe is arranged on the evaporating tank, a hot steam connecting pipe and an exhaust pipe are respectively arranged on the outer side surface of the evaporating tank, a discharging pipe is arranged on the bottom surface of the evaporating tank, and a conveyor is arranged at the lower end of the discharging pipe. A material conveying mechanism is arranged in the conveyor, the material conveying mechanism comprises a hollow shaft, the hollow shaft is rotationally installed in the conveyor, variable-pitch spiral blades are arranged on the outer circle of the hollow shaft, and the variable-pitch spiral blades are densely arranged on the side close to the discharging pipe and are dispersedly arranged on the side away from the discharging pipe. The concentrated medium is conveyed through the material conveying mechanism, pressure can be conveniently released during material conveying by arranging the variable-pitch spiral blades arranged at different intervals, the viscous medium can be conveniently conveyed, and the effect that the material conveying mechanism adapts to the media with different granularities, humidity and viscosity is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of MVR evaporators, in particular to a material discharging anti-blocking mechanism of an MVR evaporator. Background Art

[0002] The working principle of MVR evaporator is to use mechanical compression to reuse the energy of steam to improve the efficiency of evaporator. Usually, the liquid is heated to its boiling point to generate steam, and then through the heat and mass transfer process between steam and liquid, the liquid gradually evaporates and concentrates.

[0003] The application number 202123352888.X disclosed a discharge anti-blocking mechanism for an MVR evaporator, including a discharge pipe, a transmission mechanism is fixedly installed on the inner bottom of the discharge pipe, a discharge mechanism is installed between the top of the transmission mechanism and the inner wall of the discharge pipe, a mounting plate is fixedly connected to one side of the outer surface of the discharge pipe, two mounting chutes are symmetrically opened on the top of the mounting plate, both of the two mounting chutes are installed with a clamping mechanism, both of the two mounting chutes are installed with a base, a driving mechanism is installed on the top of the two bases, and the driving mechanism is connected to the transmission mechanism. The drive mechanism, transmission mechanism and discharge mechanism are provided to facilitate the discharge of other media, avoid blockage during discharge, and improve work efficiency.

[0004] The MVR evaporator produces concentrated medium after one operation cycle, and the concentrated medium is discharged outward through the discharge mechanism. However, the concentrated medium particles produced in the production process have different sizes and viscosities. The ordinary threaded feeding mechanism generates pressure during the feeding process, which is easy to cause blockage.

[0005] Therefore, we propose a discharge anti-blocking mechanism for the MVR evaporator. Utility Model Content

[0006] The utility model mainly solves the above technical problems and provides a material discharging anti-blocking mechanism for an MVR evaporator.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a discharge anti-blocking mechanism of an MVR evaporator, comprising an evaporator, an inlet pipe hot steam connecting pipe is provided on the evaporator, a hot steam connecting pipe and an exhaust pipe are respectively provided on the outer side of the evaporator, flanges are provided on the hot steam connecting pipe and the exhaust pipe, the hot steam connecting pipe and the exhaust pipe are connected and fixed to the external pipeline through flanges, the external hot steam is introduced into the evaporator through the hot steam connecting pipe, the secondary steam generated in the evaporator is discharged outward through the exhaust pipe, a discharge pipe is provided on the bottom surface of the evaporator, a conveyor is provided at the lower end of the discharge pipe, a feeding mechanism is provided inside the conveyor, the feeding mechanism comprises a hollow shaft, the hollow shaft is rotatably installed inside the conveyor, variable pitch spiral blades are provided at the outer circle of the hollow shaft, the variable pitch spiral blades are densely arranged on the side close to the discharge pipe and dispersedly arranged on the side away from the discharge pipe;

[0008] The outer surface of the hollow shaft is provided with a plurality of groups of upper and lower corresponding openings, and a control valve assembly is arranged between two groups of upper and lower corresponding openings.

[0009] Preferably, a solid connecting shaft and a hollow connecting shaft are fixedly mounted on both ends of the hollow shaft respectively, a driving motor is provided on the outer wall surface of the conveyor, and an output end of the driving motor is fixedly connected to the solid connecting shaft.

[0010] Preferably, a shaft sleeve is provided on the side of the outer wall of the conveyor facing away from the drive motor, and the hollow connecting shaft is rotatably installed in the shaft sleeve.

[0011] Preferably, the control valve assembly comprises a fixed block, a plurality of groups of support rods are fixedly mounted on the outer wall surface of the fixed block, and one end of the support rod away from the fixed block is fixedly connected to the inner wall surface of the hollow shaft.

[0012] Preferably, tension spring columns are fixedly spliced ​​on both upper and lower sides of the fixed block, and sliding columns are fixedly spliced ​​on the ends of the two groups of tension spring columns away from each other, and the free ends of the sliding columns extend outward through the through opening and are fixedly connected to the arc-shaped valve plate.

[0013] Preferably, the arc-shaped valve plate is fitted onto the outer surface of the hollow shaft under the tension of the tension spring column.

[0014] Beneficial Effects

[0015] The utility model provides a material discharging anti-blocking mechanism for an MVR evaporator. It has the following beneficial effects:

[0016] (1) The discharge anti-blocking mechanism of the MVR evaporator controls the rotation of the hollow shaft by driving the motor, so that the hollow shaft drives the variable pitch spiral blade to rotate. The concentrated medium in the evaporator enters the conveyor through the discharge pipe, and the concentrated medium is transported by the feeding mechanism. By arranging the variable pitch spiral blades with different spacings, it is convenient to release the pressure during feeding, and it is convenient to transport the viscous concentrated medium, so as to achieve the effect of making the feeding mechanism adapt to media with different particle sizes, humidity and viscosity.

[0017] (2) The discharge anti-blocking mechanism of the MVR evaporator is characterized in that the external water pipe is connected to the shaft sleeve, and clean water is transported to the inside of the hollow shaft through the shaft sleeve, and the hollow shaft is controlled to rotate rapidly. The centrifugal force generated by the rapid rotation of the hollow shaft drives the two sets of arc-shaped valve plates to move away from each other, so that the opening is hollowed out. At this time, the clean water in the hollow shaft is sprayed outward through the opening, so that the inside of the conveyor is evenly flushed, thereby achieving the effect of automatically cleaning the inside of the conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the discharge anti-blocking mechanism of the MVR evaporator;

[0021] Figure 2 This is a three-dimensional structural diagram of the conveyor of the discharge anti-blocking mechanism of the MVR evaporator;

[0022] Figure 3 This is a three-dimensional structural diagram of the feeding mechanism in the discharge anti-blocking mechanism of the MVR evaporator;

[0023] Figure 4 This is the discharge anti-blocking mechanism of the MVR evaporator Figure 3 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 5This is a schematic diagram of the three-dimensional structure of the control valve assembly of the discharge anti-blocking mechanism of the MVR evaporator.

[0025] Legend:

[0026] 1. Evaporator; 2. Feeding pipe; 3. Hot steam connecting pipe; 4. Exhaust pipe; 5. Discharging pipe; 6. Conveyor; 7. Feeding mechanism; 701. Hollow shaft; 702. Solid connecting shaft; 703. Hollow connecting shaft; 704. Variable pitch spiral blade; 705. Through port; 8. Control valve assembly; 801. Fixed block; 802. Support rod; 803. Tension spring column; 804. Sliding column; 805. Arc valve plate; 9. Bushing; 10. Drive motor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1: A discharge blocking prevention mechanism for an MVR evaporator, such as Figure 1 As shown, it includes an evaporator 1, on which a feed pipe 2 and a hot steam connecting pipe 3 are provided, and on the outer side of the evaporator 1, a hot steam connecting pipe 3 and an exhaust pipe 4 are respectively provided, and flanges are provided on the hot steam connecting pipe 3 and the exhaust pipe 4, and the hot steam connecting pipe 3 and the exhaust pipe 4 are connected and fixed to the external pipeline through flanges, and the external hot steam is introduced into the evaporator 1 through the hot steam connecting pipe 3, and the secondary steam generated in the evaporator 1 is discharged outwardly through the exhaust pipe 4, and the bottom surface of the evaporator 1 is provided with a discharge pipe 5, and the lower end of the discharge pipe 5 is provided with a conveyor 6, and the concentrated medium in the evaporator 1 is guided to the conveyor 6 through the discharge pipe 5, and the concentrated medium is discharged outwardly through the conveyor 6;

[0029] like Figure 2 and Figure 3As shown, the conveyor 6 is provided with a feeding mechanism 7 inside, and the feeding mechanism 7 includes a hollow shaft 701, which is rotatably installed inside the conveyor 6, and a solid connecting shaft 702 and a hollow connecting shaft 703 are fixedly installed at both ends of the hollow shaft 701, respectively. A driving motor 10 is provided on the outer wall of the conveyor 6, and the output end of the driving motor 10 is fixedly connected to the solid connecting shaft 702. A shaft sleeve 9 is provided on the side of the outer wall of the conveyor 6 away from the driving motor 10, and the hollow connecting shaft 703 is rotatably installed in the shaft sleeve 9. A variable pitch spiral blade 7 is provided on the outer circle of the hollow shaft 701. 04, the variable pitch spiral blades 704 are densely arranged on the side close to the discharge pipe 5 and dispersedly arranged on the side away from the discharge pipe 5. The hollow shaft 701 is controlled to rotate by the driving motor 10, so that the hollow shaft 701 drives the variable pitch spiral blades 704 to rotate. The concentrated medium in the evaporator 1 enters the conveyor 6 through the discharge pipe 5, and the concentrated medium is transported by the feeding mechanism 7. By setting the variable pitch spiral blades 704 with different arrangement intervals, it is convenient to release the pressure during feeding, and it is convenient to transport the viscous concentrated medium, so that the feeding mechanism 7 can adapt to media with different particle sizes, humidity and viscosities.

[0030] Embodiment 2, based on embodiment 1, as Figure 4 and Figure 5 As shown, the outer surface of the hollow shaft 701 is provided with multiple groups of upper and lower corresponding through-ports 705, and a control valve assembly 8 is arranged between the two groups of upper and lower corresponding through-ports 705. The control valve assembly 8 includes a fixed block 801, and multiple groups of support rods 802 are fixedly installed on the outer wall surface of the fixed block 801. The end of the support rod 802 away from the fixed block 801 is fixedly connected to the inner wall surface of the hollow shaft 701, and the upper and lower sides of the fixed block 801 are fixedly spliced ​​with tension spring columns 803, and the ends of the two groups of tension spring columns 803 away from each other are fixedly spliced ​​with sliding columns 804, and the free end of the sliding column 804 extends outward through the through-port 705 and is connected to the arc valve The valve disc 805 is fixedly connected. When the hollow shaft 701 rotates slowly to feed the material, the arc valve disc 805 fits onto the outer surface of the hollow shaft 701 under the tension of the tension spring column 803. When the inside of the conveyor 6 needs to be cleaned, the external water pipe is connected to the shaft sleeve 9, and the clean water is transported to the inside of the hollow shaft 701 through the shaft sleeve 9, and the hollow shaft 701 is controlled to rotate rapidly. The centrifugal force generated by the rapid rotation of the hollow shaft 701 drives the two groups of arc valve discs 805 to move away from each other, so that the through-port 705 is hollowed out. At this time, the clean water in the hollow shaft 701 is sprayed outward through the through-port 705, so that the inside of the conveyor 6 is evenly flushed.

[0031] The working principle of this utility model:

[0032] The hollow shaft 701 is controlled to rotate by driving the motor 10, so that the hollow shaft 701 drives the variable pitch spiral blade 704 to rotate, and the concentrated medium in the evaporator 1 enters the conveyor 6 through the discharge pipe 5, and the concentrated medium is transported by the feeding mechanism 7. By arranging the variable pitch spiral blades 704 with different arrangement intervals, it is convenient to release the pressure during feeding, and it is convenient to transport the viscous concentrated medium, so that the feeding mechanism 7 can adapt to media with different particle sizes, humidity and viscosity.

[0033] The external water pipe is connected to the shaft sleeve 9, and the clean water is transported to the inside of the hollow shaft 701 through the shaft sleeve 9, which controls the rapid rotation of the hollow shaft 701. The centrifugal force generated by the rapid rotation of the hollow shaft 701 drives the two sets of arc-shaped valve plates 805 to move away from each other, so that the through hole 705 is hollowed out. At this time, the clean water in the hollow shaft 701 is sprayed outward through the through hole 705, so that the conveyor 6 is evenly flushed.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A discharge blocking prevention mechanism for an MVR evaporator, comprising an evaporator (1), the evaporator (1) being provided with a feed pipe (2) and a hot steam connecting pipe (3), the outer side of the evaporator (1) being provided with a hot steam connecting pipe (3) and an exhaust pipe (4), respectively, the hot steam connecting pipe (3) and the exhaust pipe (4) being provided with flanges, the hot steam connecting pipe (3) and the exhaust pipe (4) being connected and fixed to an external pipeline via flanges, external hot steam being introduced into the evaporator (1) via the hot steam connecting pipe (3), and secondary steam generated in the evaporator (1) being discharged to the outside via the exhaust pipe (4), characterized in that: The bottom surface of the evaporator (1) is provided with a discharge pipe (5), the lower end of the discharge pipe (5) is provided with a conveyor (6), the interior of the conveyor (6) is provided with a feeding mechanism (7), the feeding mechanism (7) comprises a hollow shaft (701), the hollow shaft (701) is rotatably mounted inside the conveyor (6), and variable pitch spiral blades (704) are provided at the outer circumference of the hollow shaft (701), the variable pitch spiral blades (704) are densely arranged on a side close to the discharge pipe (5) and dispersedly arranged on a side away from the discharge pipe (5); The outer surface of the hollow shaft (701) is provided with a plurality of groups of upper and lower corresponding openings (705), and a control valve assembly (8) is provided between two groups of upper and lower corresponding openings (705).

2. The discharge anti-blocking mechanism of an MVR evaporator according to claim 1, characterized in that: A solid connecting shaft (702) and a hollow connecting shaft (703) are respectively fixedly mounted on both ends of the hollow shaft (701); a driving motor (10) is provided on the outer wall surface of the conveyor (6); and an output end of the driving motor (10) is fixedly connected to the solid connecting shaft (702).

3. The discharge anti-blocking mechanism of an MVR evaporator according to claim 2, characterized in that: A shaft sleeve (9) is provided on the side of the outer wall of the conveyor (6) facing away from the drive motor (10), and the hollow connecting shaft (703) is rotatably mounted in the shaft sleeve (9).

4. The discharge anti-blocking mechanism of an MVR evaporator according to claim 1, characterized in that: The control valve assembly (8) comprises a fixed block (801), and a plurality of support rods (802) are fixedly mounted on the outer wall of the fixed block (801), and one end of the support rod (802) away from the fixed block (801) is fixedly connected to the inner wall of the hollow shaft (701).

5. The discharge anti-blocking mechanism of the MVR evaporator according to claim 4, characterized in that: Tension spring columns (803) are fixedly spliced ​​on both upper and lower sides of the fixed block (801), and sliding columns (804) are fixedly spliced ​​on the ends of the two groups of tension spring columns (803) that are away from each other. The free ends of the sliding columns (804) extend outward through the opening (705) and are fixedly connected to the arc-shaped valve plate (805).

6. The discharge anti-blocking mechanism of the MVR evaporator according to claim 5, characterized in that: The arc-shaped valve plate (805) is fitted onto the outer surface of the hollow shaft (701) under the tensile force of the tensile spring column (803).

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